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  • 1.
    Agüero, Ramón
    et al.
    University of Cantabria, Spain.
    Berg, Miguel
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Choque, Johnny
    University of Cantabria, Spain.
    Hultell, Johan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Jennen, Ralf
    RWTH Aachen University, Germany.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Muñoz, Luis
    University of Cantabria, Spain.
    Prytz, Mikael
    Ericsson Research.
    Strandberg, Ove
    Nokia, Finland.
    RRM Challenges for Non-Conventional and Low-Cost Networks in Ambient Networks2005Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper presents an overview of the Radio Resource Management (RRM) functionalities needed for Non-Conventional and Low-Cost Networks. These types of networks are characterized by increased cooperation between different types of networks and providers and they are believed to play a fundamental role for future wireless network networking. The paper describes three specific concepts, which latter is used to identify new RRM challenges. In addition, it identifies the relation between the RRM challenges and the Ambient Networks architecture and functionalities, in particular the multiradio resource management functionality.

  • 2.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Chatzimichail, Konstantinos
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Cavdar, Cicek
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Techno-economics of Green Mobile Networks Considering Backhauling2014Ingår i: 20th European Wireless Conference, EW 2014, Barcelona: VDE Verlag GmbH, 2014, s. 415-6Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper we consider a comparative analysis of different deployment solutions in terms of total cost of ownership (TCO) and impact of energy efficiency as a cost parameter, i.e. mobile operator's electric bill. Different deployment options for the wireless segment of the network are considered: macro only versus heterogeneous networks with femto cells to support indoor traffic demand. In addition to the wireless segment different technologies for the backhauling segment are also considered: microwave versus fiber (10G-PON). Considering different user traffic intensities in an urban area and different environments such as business and residential areas, the impact of energy consumption on the TCO has been analyzed. The scope of the paper is extended to compare different backhaul technologies considering the annual increase in the traffic demand up to year 2020. The obtained results indicate that the impact of electric bill becomes more significant over the TCO especially after year 2018. Moreover, the heterogeneous deployment strategy utilizing indoor femto-cells achieves significant savings in terms of electric bill and TCO compared to the macro only solution. However, the saving ratio varies according to the adopted backhauling technology.

  • 3.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Impact of the flexible spectrum aggregation schemes on the cost of future mobile network2015Ingår i: 2015 22nd International Conference on Telecommunications, ICT 2015, IEEE conference proceedings, 2015, s. 96-101Konferensbidrag (Refereegranskat)
    Abstract [en]

    Nowadays the spectrum regulations landscape is changing towards more flexible spectrum management schemes, such trends are expected to make additional spectrum resources available and lowers the spectrum access hurdles. In this paper, different spectrum aggregation scenarios have been compared focusing on the tradeoff between the total cost of ownership and the targeted QoS under different market conditions. The main finding in this study thereof indicates that the addition of more spectrum resources will lead to an overall reduction in the total cost of ownership (TCO) as long as the spectrum price remains small compared to the cost of the network infrastructure. Moreover, schemes such as LSA and secondary access will enable operators who have insufficient licensed spectrum resource to expand their mobile network infrastructure especially in hotspots with high subscribers demand in a cost-effective way. In this regard, the harmonization of spectrum use for LSA and TVWS across multiple countries stands as a key requirement for the reduction of the production cost of equipment and hence, the creation of an economy of scale considering both of the network equipment (i.e. radio base station) and end-subscriber devices. 

  • 4.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Cavdar, Cicek
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Interplay Between Cost,Capacity and Power Consumption in Heterogeneous Mobile Networks2014Ingår i: 2014 21st International Conference on Telecommunications, ICT 2014, Lisbon: IEEE Press, 2014, , s. 5s. 98-102Konferensbidrag (Refereegranskat)
    Abstract [en]

    Mobile operators nowadays tend to deploy dense heterogeneous layers of 3G and 4G networks in outdoor and indoor environments by adding more macrocells and small cells (e.g. microcells, picocells and femtocells) in response to the increasing demand for coverage and capacity. Another main driver and enabler behind this tendency is the phenomenon that around 80% of power consumption in mobile communication networks stems from the radio base stations. This situation makes mobile operators opt for the use of lowpower radio base stations to provide better coverage, capacity and an environmentally-friendly operation. In this paper the interplay between the deployment costs, targeted QoS and power consumptions have been studied considering two deployment options for the provisioning of the required mobile broadband coverage and capacity; namely the heterogeneous network (HetNet) option versus the homogenous macrocell deployment option. The main findings indicate that, the perceived saving in the total cost of ownership (TCO) resulting from offloading percentage of network traffic to indoor smallcell, in the case of HetNet, is bounded by the mobile subscriber density per area, their usage patterns, the adopted backhaul solution and the used spectrum resources. In general, a quite paying cost and power saving can be achieved by the heterogonous deployment solution for scenarios with high demand levels especially when there is a need to use the spectrum resources more efficiently.

  • 5.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Cavdar, Cicek
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Study on the effects of backhual solutions on indoor mobile deployment "macrocell vs. femtocell"2013Ingår i: 2013 IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), IEEE conference proceedings, 2013, s. 2444-2448Konferensbidrag (Refereegranskat)
    Abstract [en]

    The deployment of low cost and low power base stations has been recognized in recent years as a promising cost-efficient solution and energy-efficient strategy. In this paper the femtocell and macrocell deployment options have been compared in the context of indoor mobile broadband deployment, with focus on the effect of different backhauling solutions in power consumption and the total deployment cost. This study has been based on the deployment of mobile broadband services within an area of one square kilometers in a new densely populated business district where the different user demands, spectrum bandwidths, backhaul technologies and radio access technologies are taken into account. Moreover, various deployment scenarios reflecting the business perspectives of mobile operators have been looked into as well. The main findings reached indicate that backhaul solutions contribute differently to cost and power consumption depending on the employed deployment strategy. However, contributions to the total power consumption and to the CapEx and OpEx elements of the total deployment cost elements turned to be more significant in the case of femtocell deployment scenarios than in the case of macrocell ones. It is worthy of notice that the femtocell deployment is more cost-efficient, especially in high demand situation when new macro sites are needed to be deployed.

  • 6.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Evaluation of Spectrum Access Options for Indoor Mobile Network Deployment2013Ingår i: 2013 IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops), IEEE , 2013, s. 138-142Konferensbidrag (Refereegranskat)
    Abstract [en]

    The investments in indoor mobile networks are highly related to the spectrum availability and its associated authorization options. The aim of this paper is to discuss the differences in the spectrum demand taking into consideration both wide and local area network deployment requirements and the kind of actor that provides the indoor wireless access. The analysis covers different authorizations options namely licensed, unlicensed, licensed shared access (LSA) and secondary access. A quantitative approach is used to analyze the differences between macrocell and femtocell deployments focusing on deployment cost and spectrum demand. This is complemented by a qualitative study to explore and discuss the strategic business decisions of different actors in view of the available spectrum bands and spectrum authorization options. The main conclusions from this study are; spectrum has more value in macrocell deployment scenarios than in femtocell ones. More spectrum in macrocell deployment scenarios means that operators can deploy less number of new sites and exploit previous infrastructure investments. Femtocell networks are often coverage limited which allows for frequency re-use. As a consequence, the value of spectrum is not the same for mobile network operators (MNOs) and for local network operator (LNOs). MNOs are traditionally confined to macrocell deployment strategies which entail the exclusive usage of licensed bands. While, the use of licensed spectrum by LNOs may incur more cost than the cost of infrastructure deployment. This explains why the use of unlicensed bands is lucrative and viable for LNOs. Furthermore, the LSA scheme may or could soon become an enabler for LNO's business due to the prevailing technical, regulation and policies developments.

  • 7.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Investment strategies for different actors in indoor mobile market: "in view of the emerging spectrum authorization schemes"2013Ingår i: 24th European Regional Conference of the International Telecommunication Society, Florence, Italy, 20-23 October 2013, 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    The regulatory landscape is changing towards more flexible spectrum management schemes. Such schemes are expected to make additional spectrum resources available and lower the spectrum access barriers. Emerging spectrum authorization schemes such as secondary access (TV White Space) and Licensed Shared Access (LSA) are expected to open doors for new actors rather than traditional MNOs to access licensed spectrum resources at reasonable costs. These schemes will allow actors such as Facility Owners (FO), Mobile Virtual Network Operators (MVNO) and Internet Service Providers (ISPs) to invest in indoor mobile network infrastructure. These actors can act as Local Network Operators (LNO) and build their business models around provisioning of mobile services in locations where there seems to be a hole or lack of service coverage in a particular area within the mobile network operators (MNOs) service footprint. This paper highlights the differences between indoor deployment and outdoor deployment in the light of the available spectrum bands to be used and the possible business models for MNOs and LNOs. In short, the possible investment strategies for provisioning indoor mobile services vary between MNOs and LNOs cases due to economic and regulatory aspects surrounding them. The main finding in this study indicates that the willingness of MNOs to invest in dedicated indoor solutions is driven by the balance between the potential revenues and the deployment cost. Moreover MNOs have more spectrum and investment options compared to LNOs who must bond their investment strategies to the available spectrum resources (i.e. the regulations of spectrum access).

  • 8.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    The Incentives and Challenges of Delivering Linear Broadcasting Services over Cellular Network in Developing Countries: Sudan as Case study2014Ingår i: The 25th European Regional Conference of the International Telecommunications Society,Brussels, Belgium, 22nd - 25th June 2014, Brussels: nternational Telecommunications Society , 2014Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    The Broadcasting sector has been evolved in terms of service production, transmission platform and reception devices in the last few decades. In contrast to cable and satellite platform, which are suitable for fixed reception only, the terrestrial digital platform can support portable, mobile and fixed reception scenarios. In general, there are two options of mobile multimedia service; one is based on a mobile communication network with IP cast known as MBMS (Multimedia Broadcast Multicast Services), while the other is based on broadcast technology. In the context of convergence, the players in the mobile sector argues that unlike traditional mobile  network systems, where the use was restricted to a given application, emerging  mobile networks will be able to carry a variety of services and accordingly separate broadcasting networks will no longer be required. In line with argument, it is not economically viable to roll out dedicated wireless broadband networks by the broadcasters to meet the increasing demand for interactive broadcasting services. That is why the broadcasters may look for innovative mechanism to deliver the broadcast services over mobile broadband network owned by the telecommunication operators.

    The focus on this paper is to investigate the incentives and challenges for such trend in developing countries; taking Sudan as case study. The main conclusion in this paper indicate that a potential economic incentive for delivering the broadcasting service over cellular network in Sudan subject to the deployment of high efficient mobile network. Moreover, the mobile operators may consider support such approach considering the increase demand for additional frequency resource.  However, the key challenges remain in how to develop a suitable regulations landscape to assure fair and competitive business practices on hand while guaranteeing the continuation of the public broadcasting service. In this regard, a new regulation framework needs to be developed to separate the three key functions in digital terrestrial broadcasting value chain (namely the content production and distribution). Further on, the necessary interconnection regulations need to put on place in order to pave the way for rollout of common platform that are necessary for interactive and nonlinear services. 

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  • 9.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Toward capacity-efficient, cost-efficient and power-efficient deployment strategy for indoor mobile broadband2013Ingår i: 24th European Regional ITS Conference, Florence 2013, 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    Mobile operators nowadays tend to deploy dense heterogeneous layers of 3G and 4G networks in outdoor and indoor environments by adding more macrocells and smallcells (e.g. microcells, picocells and femtocells) in response to the increasing subscriber demand for coverage and capacity. The main driver and enabler behind this tendency is the phenomenon that around 80% of power consumption in mobile communication networks stems from the radio base stations. This situation makes mobile operators opt for the use low-power radio base stations to provide better coverage, capacity and a more environment-friendly operation. The use of low-power radio base stations leads to reduction of energy consumption in mobile communication networks power. The aim of this study is to conduct a comparative study between homogenous macrocell deployment and indoor smallcell deployments as alternative solutions for provision of the required indoor coverage and capacity. Moreover, the study highlights the importance of backhaul solutions being critical components in the smallcell network deployment. Furthermore, the scope of the study is extended to cover the investigation of the value of the heterogeneous (i.e. hybrid marcocell-femtocell) deployment scenario as a cost and power-efficient solution versus the homogenous marcocell deployment scenario in view of the variations in the mobile network traffic during the day. The main findings indicate that the CapEx and OpEx of the backhaul solution represent the major part of the total deployment cost in the indoor smallcell deployment scenario (i.e. femtocell case) compared to those of the macrocell deployment scenario. Nonetheless, the perceived saving in the total cost of ownership (TCO) resulting from the use of indoor smallcell (i.e. femtocell) remains a satisfactory and convenient motivation considering the traffic variation across the day, traffic distribution between indoor and outdoor locations and the keenness to use the spectrum resources more efficiently.

  • 10.
    Ahmed, Ashraf
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Yang, Yanpeng
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Won Sung, Ki
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    On the Engineering Value of Spectrum in Dense Mobile Network Deployment Scenarios2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    the continuing growth in the mobile data traffic magnifies the challenges for the design and deployment of scalable high-capacity mobile networks that can meet the future demand at reasonable cost levels. In order to meet the future traffic demand, an operator should invest on both infrastructure, i.e. densification of base stations, and more radio spectrum. Knowing the effectiveness of each element is thus of utmost importance for minimizing the investment cost. In this paper, we study the economic substitutability between spectrum and densification. For this, we measure the engineering value of spectrum, which refers to the potential saving in the total cost of ownership (TCO) as result of acquiring additional spectrum resources. Two countries are considered to represent different market situations: India with dense population and high spectrum price and Sweden with moderate population density and low spectrum fee. Numerical results indicate that additional amount of spectrum substantially relieves the need for densifying radio base stations, particularly for providing high user data rate in dense India. Nonetheless, the engineering value of spectrum is low in India (i.e. spectrum acquisition has less cost benefit) under the high spectrum price of today, whereas spectrum is instrumental in lowering the total cost of ownership in Sweden. Our finding highlights the importance of affordable and sufficient spectrum resources for future mobile broadband provisioning.

  • 11.
    Aidi, Laili
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Tollmar, Konrad
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Blennerud, Greger
    Ericsson.
    Competing or Aligning? Assessment for Telecom Operator's strategy to address OTT TV/Video services2012Konferensbidrag (Refereegranskat)
    Abstract [en]

    Up until recently, it was rarely direct competition between telecom operators, cable and satellite Pay-TV providers in digital TV/Video, as their business area were different and value chain was well established. However, technology advance has altered digital TV/Video landscape, made these Communication Service Providers (CSPs) cross other’s area and opened door for new actor (OTT player) to enter the market. This triggers second change in the landscape, as it potentially bypasses CSP’s role in digital media value chain.

    There are generic potential options for telecom operator to address OTT service‘s treat, where the trend shows gradual shifts toward allowing or promoting. This study assesses telecom operator’s reaction strategies to react to this digital TV/Video convergence trend. Our analysis reveals two typical relation patterns in the value network, used by telecom operators based on strategy options above, which are ”point-to-point” and ”point-to-multipoint” relation model. We explore the underlining motivations that based these strategies, as well as analysis of the eco-systems: actors identification, business roles and distributed responsibilities among them, where we use ARA (Actors, Resource, Activities) point of view to model these value networks.

  • 12.
    Aidi, Laili
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Tollmar, Konrad
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Selvakumar, Ekambar
    KTH, Skolan för informations- och kommunikationsteknik (ICT).
    Huang, Jin
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Intelligenta system, Teknisk informationsvetenskap.
    Blennerud, Greger
    Ericsson, Torshamnsgatan 48, S-16440, Sweden., Torshamnsgatan 48.
    Mobile music business models in Asia’s emerging markets2013Ingår i: 12th International Conference on Mobile Business, ICMB 2013, Association for Information Systems , 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    In the telecom business, there has been a heavy competition from Internet, media and handset vendors companies. These over-the-top (OTT) players offer compiling telecom services, cause a transformation in the telecom business ecosystem, and the most challenging services posed here are media services. China, India and Indonesia, as world’s emerging markets in Asia, are predicted to take the largest share in the global mobile traffic explosion by 2015. It is critical for mobile network operators (MNOs) in this region to explore strategy for mobile media services, as mobile broadband is likely preferred compared to fixed broadband. In this paper, we analyze and compare mobile music business models used in these markets and structure the relation models between the key actors, using Actors, Relations and Business Activities (ARA) model. We present the economic models that are emerging, and an insight of why and how these multitudes actors are betting on currently. We found that the MNOs generally have a much stronger position compared to their counterparts in the developed markets, and the personalization services, like ring-back tone, are still a huge success. The actors tend to deliver the services by their own, rather than to collaborate in a horizontal business setting.

  • 13. Akhtar, Nadeem
    et al.
    Markendahl, Jan
    Univ Surrey.
    Moessner, Klaus
    Analysis of Complexity and Transaction Costs For Cooperating Networks2007Ingår i: 2007 IEEE 18TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-9, 2007, s. 4270-4274Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper we investigate the impact that introduction of new Ambient Networks (AN) functionality will have on usage of system resources and on connection delay. The signalling load for multiple attachment and negotiation procedures is assessed by modelling signalling sequences for a WLAN system enabled with AN technology. The load is computed for varying numbers of users and for users with different levels of “willingness to evaluate and negotiate offers”. The results show that the most important parameter is the number of attachment attempts per time unit, which is an indicator of user activity level. In the investigated scenarios, the relative load of signalling is 0.1 – 1.0 % of the transferred user data. The delay depends on the current load situation of the network.

  • 14.
    Akhtar, Nadeem
    et al.
    University of Surrey, UK.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Queseth, Olav
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Analysis of Signaling Load and Negotiation Complexity using Network Composition2007Konferensbidrag (Refereegranskat)
    Abstract [en]

    In future mobile communications networks using Ambient Networks (AN) technology, users will be able to connect to a multitude of networks operated by different business entities. The technology enablers are advertising of access and service offers, multi-radio access, network selection and roaming support, negotiation of terms and conditions for attachment to networks. In this paper, we investigate the additional load on users and network resources for establishment and management of multiple network connections and business relations. The administrative load is analyzed using commercial uses cases and scenarios with a number of available networks, service providers and payment and ID providers. The signaling load for multiple attachment and negotiation procedures is estimated by modeling signaling sequences for a WLAN system enabled with AN technology. The signaling load is computed for varying numbers of users and for users with varying "willingness to evaluate and negotiate offers". The results show that the most important parameters are the number of attachment attempts per time unit. In the investigated scenarios, the relative load of business related signaling is 0.1 -1.0 % of the transferred user data. Although a large of number of different networks may be used, the number of business agreements and network connections that need to be handled simultaneously will be quite low.

  • 15.
    Alvarez Alvarez, Oscar
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    A COMPARATIVE STUDY OF SMART GRID DEVELOPMENT IN DEVELOPED AND DEVELOPING COUNTRIES2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    During recent years, there has been an increasing interest in the potential opportunities that can be attained with the use of smart devices in order to gather data or automate processes. This type of communications between devices with minimal human intervention is referred to as Machine-to-machine (M2M) communications that can be applied to optimize resources and improve service delivery applications. Smart Grid is one of the M2M communications applications that is attaining more attention during recent years, because of its potential to change the complete energy ecosystem; going from a unidirectional system to a bidirectional one where customers will have an important role in the ecosystem.Depending on the country and its characteristics and situation, Smart Grid development can be very different. This article identifies commonalities and differences in Smart Grid communication development considering the current status in developed and developing countries. The process is done by evaluating the following techno-economic aspects: Technology development, Public initiatives, Regulator policies and Economic situation/Business perspective of the country. The article is concluded by showing that regulator policies regarding the level of liberalization in the energy market are a key element when defining business strategies and different stages of Smart Grid communications development has a critical influence in the definition of business models, as it defines the key activities, partners and value proposition for the business.

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  • 16.
    Alvarez Alvarez, Oscar
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Ghanbari, Amirhossein
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Smart Energy: Competitive Landscape and Collaborative Business Models2015Ingår i: 2015 18th International Conference on Intelligence in Next Generation Networks, ICIN 2015, IEEE Communications Society, 2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    During the recent years several technologies and services based in Internet of Things (IoT) and Machine-to-Machine communications (M2M) have appeared in many different sectors, like healthcare, transport, logistics, media or utilities. When new technologies (like Smart Grid or Smart Energy) appear two types of challenges can be defined: technical and business challenges, therefore innovation has to be applied in both of them. Too often innovation is focus on the technical evolution and underestimated on the business field, however it is a key aspect for new technologies and services to reach commercial success. Traditional business models in the energy sector will suffer big changes in the next years, as the Smart Grid concept is developed.By the advent of new services and applications, horizontal and vertical partnerships with competitors and other actors will take place. In this context collaboration between actors, partnerships and agreements will be of key importance. This paper investigates the different actors involved in a Smart Energy ecosystem, its possible activities and suitable business models for the different Smart Grid building blocks or milestones.

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  • 17.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Capabilities for Network Operations and Support of Customers’ Working Processes2007Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this work in progress paper we will discuss company capabilities related to telecom services and how they can be developed or acquired in order to increase the compositeness of the firm. Traditionally, the technical infrastructure and platforms are designed and deployed by the vendors and operators and the role of end-users, private persons or enterprises,  is to accept the offered service, pay and use. This may be a sustainable model when the user requirements are limited to connectivity, communication between persons and internet access, and to delivery of media services where the network acts as a channel. However, we argue that the design and deployment process of telecom services must be changed in order to provide flexible support of customers´ working processes. As a supplier you also have to consider how value is added in the working process of the customer. The full paper will include problem formulation, research questions, theoretical analysis and empirical data from case studies. 

  • 18.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Value added services and new business roles for support of mobile professional users and project working processes2008Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper we will discuss services that support the value creation process and the interaction between companies in the supply chain. The value added services for professional users hence should support both the internal working processes within a company and, maybe even more important, the interaction between different market actors.   We will discuss how communication systems and value added services can be designed in order to support professional users.

    We target business users using services supporting work in mobile environments with a temporary project organization. The discussion and some analysis will be based on findings from construction projects and from public safety services.  These “projects” are usually temporary with different duration, highly mobile and geographically distributed organizations with common work processes that require close interaction between multiple users and partners belonging to different organizations.

    The analysis starts with characterization of user behavior, user environments and project organizations.  Communication and mobility patterns are described and possible services and business roles are proposed.

    Analysis of empirical results in identification of different types of organization of the provider network. The position of actors within this network is important. Using these findings we discuss adaptive or adaptable business models that could be configured in different ways depending on the duration and the position of actors within the network. An important aspect is the ability for companies to change perspective and consider new ways to assess business opportunities and/or to organize the value creation activities. 

  • 19.
    Andersson, Per
    et al.
    Stockholm School of Economics, P.O.Box 6501, S-113 83, Stockholm, Sweden, P.O.Box 6501.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Mattsson, Lars Gunnar
    Stockholm School of Economics, P.O. Box 6501, S-113 83, Stockholm, Sweden, P.O.Box 6501.
    Rosenqvist, Christopher
    Stockholm School of Economics, P.O.Box 6501, S-113 83, Stockholm, Sweden, P.O.Box 6501.
    Cooperation and Competition during Evolution of Technology Based Service Innovation: The Case of Development of NFC Enabled Mobile Services in Nice2013Ingår i: 12th International Conference on Mobile Business, ICMB 2013, Association for Information Systems , 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    Concurrent cooperation and competition is an important characteristic of innovation processes. We illustrate this with reference to a case on new mobile, NFC (Near Field Communications) based services: a systemic service innovation project in Nice, named Cityzi. Cityzi is a local sub-process in the globally dispersed efforts to develop and implement mobile services enabled by the NFC technique that can be used for mobile communication. The project requires cooperation, also between competing actors, to determine technical interfaces as well as development and implementation of business models for production and use of the services in practice. Due to the heterogeneity of resources that need to be combined, actors from different industrial as well as public policy sectors participate in the project. We apply a network perspective for our analysis of cooperation and competition during service innovation processes, specifically focusing on network overlapping processes. A dynamic conceptual model is suggested to capture the complexities of implementing largescale ICT infrastructure projects, when going from trial to commercialization.

  • 20.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Mattsson, Lars-Gunnar
    Handelshögskolan, Stockholm School of Economics.
    Global policy networks’ involvement in service innovation. Turning the mobile phone into a wallet by applying NFC technology2011Ingår i: The IMP Journal, ISSN 2059-1403, E-ISSN 0809-7259, Vol. 5, nr 3, s. 193-211Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The mobile phone attracts an increasing number of service applications enabled by technical developments. On-going efforts aim to widen the scope of mobile payments and “turning the mobile phone into a wallet” with the help of Near Field Technology (NFC). A number of industries are involved in this development. To enable large scale commercial application of the new technology for mobile payments, several global industry associations, what we label Global Policy Networks (GPNs), are involved in standard setting, certification, visions and promotion of business applications, etc. The purpose of the paper is to analyze the role of GPNs in establishing global policies to enable business actors to develop and implement local policies applying the new technology for business purposes. The paper focuses on how some yet to be settled global policy issues affect local policies.

  • 21.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Mattsson, Lars-Gunnar
    Handelshögskolan, Stockholm School of Economics.
    Technical development and the formation of new business ventures, The case of new mobile payment and ticketing services2011Ingår i: The IMP Journal, ISSN 2059-1403, E-ISSN 0809-7259, Vol. 5, nr 1, s. 23-41Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    How do new business ventures emerge, and how is their emergence linked to technical development? What are the challenges of forming new business ventures when the business involves the connection of previously unconnected or loosely connected networks? This paper analyses the connections between technical development and the formation of new business ventures.

    A set of case studies is presented that show how existing market structures, business development and associated wireless, technologies and systems are affected by the emergence of new mobile payment and ticketing services. This paper presents result from an on-going research project on near field communication based services in Sweden. In late 2008 the project “Foundation For NFC/Sensor Network B2B2C Services” (FORCE) was initiated by TeliaSonera Mobile Network, KTH Center for Wireless System, and Center for Information and Communication Research at the Stockholm School of Economics.

  • 22.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Mattsson, Lars-Gunnar
    Handelshögskolan, Stockholm School of Economics.
    The formation of new business ventures in networks: creating new intermediary roles and extracting value from the exploitation of technology2010Konferensbidrag (Refereegranskat)
    Abstract [en]

    This paper analyzes new business formation connected to the use of established mobile technologies and associated services. The purpose of the paper is to describe how a set of alternative business network situations can emerge when established wireless application technologies are exploited and new value is created and new business ventures are formed. A set of short cases describe how new business can be created based on established SMS applications and services. The paper discusses central aspects of the formation of new business ventures in networks. Here, focus is on opportunities to create value based on the exploitation of existing technology. The technology is used in a new way and is perceived by existing actors as an opportunity to exploit by creating a new intermediary performing a new role. In business practice, technology development is related to formation of new business ventures, they cannot be separated from each other.

  • 23.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Mattsson, Lars-Gunnar
    Handelshögskolan, Stockholm School of Economics.
    Tjänsteinnovationer och marknadsomvandling: fallet mobila betalningar2011Ingår i: Morgondagens industri: Att sätta spelregler och flytta gränser  (EFI Yearbook 2011) / [ed] I. Benson, J. Lind, E. Sjögren, F. Wijkström, Lund: Studentlitteratur, 2011Kapitel i bok, del av antologi (Refereegranskat)
  • 24.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Arvidsson, Niklas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Hållbarhet och industriell dynamik.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Mobile payments: a proposal for a context-oriented approach based on socio-technical system theoryIngår i: Journal of Innovation Management, ISSN 2183-0606Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A recent review on mobile payment research by Dahlberg et al. (2015) concludes that there is a need to synthesise this research area by studying contexts in which innovation is done as well as to integrate different aspects of research. This article aims to provide a proposal for how to achieve such integration and context-orientation by building on previous studies as well as an additional review. Our systematic literature review of mobile payments research is focused on papers published during 2006–2016. The main objective is to examine how mobile payments research has been conducted from the methodological and theoretical perspectives. Our findings show that research on mobile payments is a multidisciplinary research. Three main themes, which are in line with previous studies, in research are: customer adoption, technological aspects, and business aspects. Moreover, research is mainly analytical based on deductive approach. To meet the challenge formulated in the previous research, we propose and apply a socio-technical system framework to achieve synthesis and context-specific consideration in future research on mobile payments.

  • 25.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Arvidsson, Niklas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Hållbarhet och industriell dynamik.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Mobile payments: A proposal for a context-oriented approach based on socio-technical system theory2018Ingår i: Journal of Innovation Management, E-ISSN 2183-0606, Vol. 6, nr 3, s. 40-97Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A recent review of mobile payment research by Dahlberg et al. (2015) concludes that there is a need to synthesise this research area by studying contexts in which innovation is carried out and to integrate different aspects of research. This article aims to provide a proposal for how to achieve such integration and context orientation by building on previous studies and offering an additional review. Our systematic literature review of mobile payments research is focused on papers published during 2006–2016. The main objective is to examine how mobile payments research has been conducted from the methodological and theoretical perspectives. Our findings show that research on mobile payments is a multidisciplinary research. Three main themes in the research (in line with previous studies) are customer adoption, technological aspects, and business aspects. Moreover, research is mainly analytical based on a deductive approach. To meet the challenge formulated in the previous research, we propose and apply a socio-technical system framework to achieve synthesis and context-specific consideration in future research on mobile payments.

  • 26.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Mobile ticketing services in the Northern Europe Critical business model issues2017Ingår i: 2017 JOINT 13TH CTTE AND 10TH CMI CONFERENCE ON INTERNET OF THINGS - BUSINESS MODELS, USERS, AND NETWORKS / [ed] Falch, M, IEEE , 2017Konferensbidrag (Refereegranskat)
    Abstract [en]

    Started as SMS ticketing, today, mobile ticketing services become a platform for combined mobility solutions that integrate mobile ticketing, bike renting, car sharing, and parking payment services. Mobile ticketing services provide a number of benefits for public transport companies and passengers, however, in some Northern European countries, the share of mobile ticket sales does not exceed 10 percent. In this paper, we analyse business models of three types of mobile ticketing services (SMS, in-app, and "Be-InBe-Out" (BIBO)) in order to identify factors that negatively affect wider penetration of mobile ticketing. In order to do so, we use STOF (Service, Technology, Organisation, and Finance) model. The research reveals that there are a number of challenges related to service, technology, and finance domains of mobile ticketing. Due to this, with the help of price policy, many public transport companies push choices of their customers towards use of plastic travel card.

  • 27.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Mobile ticketing services in the Northern Europe: Critical business model issues2018Ingår i: Internet of Things Business Models, Users, and Networks, 2017 / [ed] Morten Falch, Copenhagen, Denmark: IEEE, 2018, s. 1-8Konferensbidrag (Refereegranskat)
    Abstract [en]

    Started as SMS ticketing, today, mobile ticketing services become a platform for combined mobility solutions that integrate mobile ticketing, bike renting, car sharing, and parking payment services. Mobile ticketing services provide a number of benefits for public transport companies and passengers, however, in some Northern European countries, the share of mobile ticket sales does not exceed 10 percent. In this paper, we analyse business models of three types of mobile ticketing services (SMS, in-app, and “Be-In Be-Out” (BIBO)) in order to identify factors that negatively affect wider penetration of mobile ticketing. In order to do so, we use STOF (Service, Technology, Organisation, and Finance) model. The research reveals that there are a number of challenges related to service, technology, and finance domains of mobile ticketing. Due to this, with the help of price policy, many public transport companies push choices of their customers towards use of plastic travel card.

  • 28.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Stakeholder’s expectations: Mobile payments in retail in Sweden2014Ingår i: 13th International Conference on Mobile Business, 2014 (ICMB 2014), London, June 4-5, 2014, 2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    One of the main application areas of mobile payment services in Sweden is retailing. The main stakeholders involved in this service are mobile payment service providers, banks, merchants, and consumers. The main focus of this paper is on the change of expectations of different stakeholders taking part in service provisioning. Analysis has been performed by comparison of the initial expectations before the introduction of a mobile payment service and expectations after practical experience of the service usage. Three cases of mobile payment solutions for retailing have been investigated: BART provided by Swedbank, SEQR provided by Seamless, and a service provided by Payair.

    The analysis indicates that a number of expectations of stakeholders about mobile payment services did not come true. The results for the different cases differ but the main findings are: banks were excluded from direct service provisioning; merchants see some advantaged to deploy mobile payment, but are uncertain which solution will be a dominant in the market; consumer expectations of improved purchasing experience and usefulness are not met. The performed analysis also helps to identify some of the reasons that can be seen as obstacles for a wider penetration of mobile payment services.

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  • 29.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    The mobile payment in retail: Teaching case summary2013Ingår i: The 29th Annual IMP Conference (IMP2013) proceedings: Building and Managing Relationships in a Global Network: Challenges and Necessary Capabilities / [ed] Minna Rollins and Brian Rutherford, IMP Group, 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    The case is written for master level students from business, commerce, and technical areas having some background in strategic marketing and management. The work over case implies a group work and a discussion of a strategy behind taken decision.

    THE OBJECTIVES OF THE CASE

    The main objective of the case is to gain practical skills in and better understanding of decision making in the circumstances of market uncertainty. The decision making process requires analysis of company’s core competences (Collis and Montgomery, 2008), market forces (Porter, 1996; Porter, 2008), and understanding of consumer needs. Students should apply different analysis frameworks in order to develop a strategy improving company’s competitive advantage and leveraging opportunities provided by a new technology, namely a new mobile payment solution. In addition, a consumer-centered thinking should lead to a suggestion of a bundle of attractive added values services build on top of mobile payment solution.

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  • 30.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    The value of mobile ticketing from a public transport perspective2018Ingår i: Journal of Payments Strategy & Systems, ISSN 1750-1806, Vol. 11, nr 4, s. 292-305Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Within the field of mobile payments, the market segment for mobile ticketing services is expected to grow, driven by the public transport sector. Although a large number of studies have explored the value of mobile payments to customers (ie service end users), there is a lack of research exploring the value of mobile payment and mobile ticketing for business customers (ie transport companies and retailers). This paper aims to address this gap and to explore the kinds of value that mobile ticketing services create for public transport companies. The research considers mobile ticketing services in six Northern European countries. The research findings suggest that within the business-to-business context, mobile ticketing services create multiple dimensions of value, namely enhanced technical functionality; financial value; better working environment; operational value; and reputational and customer relationship value. For passengers, meanwhile, value takes the form of convenience and service enhancement. These benefits are factors driving adoption of mobile ticketing and mobile payment services by public transport companies.

  • 31.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Entreprenörskap och Innovation.
    An exploratory study of consumer attitudes towards mobile ticketing in Sweden2013Ingår i: 24th European Regional Conference of the International Telecommunications Society: Technology, Investment and Uncertainty, ITS , 2013Konferensbidrag (Refereegranskat)
    Abstract [en]

    Swedish public transport organizations have set an objective to double usage of the public transport during the next coming five years. This study attempts to investigate if the current ticket solutions support the goal of the public transport companies, and if the available mobile phone solutions can lower barriers for consumers. In order to do that, critical travelling moments for users of different market segments were estimated during a pre-study stage. The following focus group discussions helped to validate problems identified during the pre-study. At the same time, focus groups provided deeper consumer insights on general consumer perception of the transport service, ticketing, mobile payment, quality of service, consumer expectations related to the public transport services, and consumer satisfaction and loyalty.

    The conducted research helped to identify problems existing in public transport ticketing and mobile payment areas, which have the negative impact on the usage of the public transport service and contribute with additional barriers for users. Moreover, this conclusion is supported by multiple examples that clearly illustrate what does not work, and why it does not work. Hence, mentioned solutions do not support the overall objective of the public transport operators. The comprehension of these problems and barriers can contribute to a better understanding of consumer needs and expectations, and help the public transport service providers to improve the service.

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  • 32.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Entreprenörskap och Innovation.
    Stakeholders’ Expectations of Mobile Payment in Retail: Lessons from SwedenManuskript (preprint) (Övrigt vetenskapligt)
  • 33.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.).
    Stakeholders' expectations of mobile payment in retail: lessons from Sweden2016Ingår i: International Journal of Bank Marketing, ISSN 0265-2323, E-ISSN 1758-5937, Vol. 34, nr 1, s. 37-61Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose– The purpose of this paper is to explore the reasons behind the slow adoption of mobile payment services. The expectations of the main groups of stakeholders – the mobile service providers, the retailers, and the consumers – of the service in the retail industry in Sweden are examined. Design/methodology/approach– The authors use a qualitative case study of stakeholders’ expectations. The conceptual research framework is based on the theory of diffusion of innovations, the technology adoption model, and network externalities. The proposed framework was tested and validated by empirical findings. Findings– One of the key findings of the research highlights that acceptance of a mobile payment service depends on the ability of mobile payment providers to build networks of both retailers and consumers simultaneously. The service will attract these stakeholders if it meets their expectations in the best possible way. Another finding is that mobile payment services do not meet expectations on an enhanced purchasing process. This is the area for future service improvement. Research limitations/implications– The main limitation of this study is that only a few retailers were contacted. Practical implications– First of all, criteria from the developed research framework can be used as a guide for mobile payment service development. Second, when developing and providing a mobile payment service, mobile payment providers need to have a good understanding of the needs and expectations of retailers and consumers. Originality/value– Stakeholders’ expectations have not been a focus for research in previous studies. This is a new research object.

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  • 34.
    Apanasevic, Tatjana
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab). KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth. KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekonomi och organisation (Inst.), Entreprenörskap och Innovation.
    Stakeholder’s expectations: The case of mobile public transport ticketing in Sweden2014Ingår i: 13th International Conference on Mobile Business, 2014 (ICMB 2014), London, June 4-5, 2014, 2014Konferensbidrag (Refereegranskat)
    Abstract [en]

    One of the main areas of mobile payment application in Sweden is mobile public transport ticketing. The main stakeholders involved in this service are mobile network operators, mobile payment service providers, SMS ticket’s “technology solution” providers, public transport companies, and consumers.

    Traditionally, mobile operators have had a strong position in this niche since the mobile phone bill or pre-paid subscriptions were used for end-user billing. Due to financial regulation, this situation was changed in February 2013 when new SMS payment solutions were introduced for all public transport companies in Sweden. A number of new actors entered the scene, and the position of existing actors changed dramatically. At the same time, the Swedish mobile operators formed a joint venture, 4T Sweden, offering a new mobile payment solution – WyWallet.

    The main focus of this paper is on the change of expectations of different stakeholders taking part in provisioning of SMS payment services. Analysis has been performed by comparison of the initial expectations before the introduction of the new SMS payment system and the real outcome in approximately half a year time. Analysis revealed the fact that expectations of a number of stakeholders about mobile payment services did not come true. Moreover, due to barriers set by the mobile payment solution, mobile payment transactions in public transportation is dramatically lower than what SMS payments were before the market changed.

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  • 35.
    Arvidsson, Niklas
    et al.
    KTH, Skolan för industriell teknik och management (ITM).
    Apanasevic, Tatjana
    KTH, Skolan för informations- och kommunikationsteknik (ICT).
    Markendahl, Jal
    KTH, Skolan för informations- och kommunikationsteknik (ICT).
    Mobile payments: A proposal for a context-oriented approach based on socio-technical theory2018Ingår i: Journal of Innovation Management, E-ISSN 2183-0606, Vol. 6, nr 3, s. 40-97Artikel i tidskrift (Refereegranskat)
  • 36.
    Azari, Amin
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Istiak Hossain, Mohammad
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    RACH Dimensioning for Reliable MTC over Cellular Networks2017Ingår i: 2017 IEEE 85th Vehicular Technology Conference (VTC Spring), Institute of Electrical and Electronics Engineers (IEEE), 2017, artikel-id 8108187Konferensbidrag (Refereegranskat)
    Abstract [en]

    Successful implementation of massive machine-type communications (MTC) service over cellular networks is an important enabler of Internet of things. As the existing cellular infrastructure has been designed and optimized for moderate traffic, the introduction of MTC in cellular networks results in several key challenges, among them, temporal starvation of initial access resources is of paramount importance. Here, we propose a new traffic model for cellular networks serving machine-type subscribers. This model is subsequently used to derive closed-form expressions for the access rate performance of the system. This closed-form expression are subsequently used for RACH resources planning in the time and frequency domains. Given a target access rate requirement, numerical analysis indicates how and when the required RACH resources in the code/frequency domain, i.e. number of preambles, can be traded with the occurrence frequency of RACH slots in the time domain.

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  • 37.
    Ballesteros, Luis Guillermo Martinez
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Alvarez, Oscar
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Quality of Experience (QoE) in the smart cities context: An Initial Analysis2015Ingår i: 2015 IEEE FIRST INTERNATIONAL SMART CITIES CONFERENCE (ISC2), 2015Konferensbidrag (Refereegranskat)
    Abstract [en]

    During recent years, there has been an increasing interest in the potential opportunities that can be attained with promoting Smart Cities; a concept that can be reached based on Information and Communication Technology (ICT). The Smart Cities concept is considered achievable by horizontal integration of a number of vertical industries in order to empower sustainability and improvements on quality of life for citizens. At the same time, it is worth noting that within the existing Smart Cities experiments, the offered services are user-centric and ensuring only required Quality of Service (QoS), which is not enough. Then, the challenge here is to evaluate, design and standardize new solutions oriented not only to ensure high performance with respect to the node mobility and the energy consumption but also to guarantee high levels of Quality of Experience (QoE) perceived by the end-user. This paper intends to provide an initial research on how QoE service provision will impact the development of smart city services. In order to do that, authors aim to identify which Smart City services may be impact and in which way for QoE service provision. Aligned with the same objective, business analysis for QoE service provision is introduced with the intention of identify recurring patterns that could be used in the different Smart City services considered.

  • 38.
    Ballesteros, Luis Guillermo Martinez
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Ickin, Selim
    Fiedler, Markus
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Tollmar, Konrad
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Wac, Katarzyna
    Energy Saving Approaches for Video Streaming on Smartphone based on QoE Modeling2016Ingår i: 2016 13TH IEEE ANNUAL CONSUMER COMMUNICATIONS & NETWORKING CONFERENCE (CCNC), Institute of Electrical and Electronics Engineers (IEEE), 2016Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper, we study the influence of video stalling on QoE. We provide QoE models that are obtained in realistic scenarios on the smartphone, and provide energy-saving approaches for smartphone by leveraging the proposed QoE models in relation to energy. Results show that approximately 5J is saved in a 3 minutes video clip with an acceptable Mean Opinion Score (MOS) level when the video frames are skipped. If the video frames are not skipped, then it is suggested to avoid freezes during a video stream as the freezes highly increase the energy waste on the smartphones.

  • 39.
    Beckman, Claes
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Can local 5G networks using local spectrum be used as platform for digitalization of industrial systems and services?2022Ingår i: Proceedings 31st European Regional ITS Conference, Gothenburg, Sweden, June 2022: Reining in Digital Platforms? Challenging monopolies, promoting competition and developing regulatory regimes, 2022Konferensbidrag (Refereegranskat)
    Abstract [en]

    Local 5G spectrum licenses has recently attracted a great deal of attention and expectations from both industry and governments all over the world. One reason is the expectation that 5G local industrial networks using local spectrum can be used to support digitalization of industrial processes, and hence increase productivity of industrial use cases. In support of these expectations, governments all over the world have allocated spectrum for local 5G licensing in the 3.5GHz band with various conditions.This paper focuses on local 5G networks for "private" use, these non-public networks are commonly referred to as Non-Public Networks (NPNs). We present results and discussion about implications in three areas: Network capacity and cost for 5G NPN for industrial use; Allocation of local spectrum licenses; Ecosystem analysis of business models and value networks. For the two first areas our analysis indicates that previously identified questions related to radio-interference and co-existence between NPN and operator macro cell networks still seem to be challenging. It is unclear if 5G NPN using Time-Division Duplex (TDD) at the 3.5 GHz band can satisfy performance and operational needs in the field of industrial radio systems. Hence, the value of this type of local 5G licenses need to be further discussed.For the third area and the question “what actor is doing what?” we see a need to look more into solutions where different types of actors cooperate and contribute to different parts of the value network. This is in contrast to what is described in many papers and reports where the assumption is that one type of actor will take care of all or most of the roles.

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  • 40.
    Berg, Miguel
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    A Concept for Public Access to Privately Operated Cooperating Local Access Points2005Ingår i: IEEE Vehicular Technology Conference, New York: IEEE , 2005, s. 2959-2963Konferensbidrag (Refereegranskat)
    Abstract [en]

    For many future mobile communication scenarios, the traditional operators are believed to be unable or unwilling to support some services, mainly for cost reasons. Thus, there will always be gaps in the coverage and capacity of these systems.   This paper describes a non-conventional and low-cost concept for wireless access using privately operated local access points (LAPs) contributing to the public access, thus adding coverage and capacity in e.g. homes, offices and public hotspots.  The work has been performed in the EU-funded Ambient Networks (AN) project. A migration path is presented, starting with today’s LAPs for private-use-only to LAPs for public use, implementing the AN objective of “access for anyone to any network”. The main contributions in the paper are 1) the identification and analysis of re-use of fixed and wireless transport and access capacity using adhoc mesh networks between LAPs and 2) the use of network advertising &  discovery for LAP concepts.

  • 41.
    Bria, Aurelian
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Rembarz, Rene
    Ericsson Research,.
    Pöyhönen, Petteri
    Nokia Siemens Networks.
    Simon, Csaba
    Technical University Budapest.
    Miozzo, Marco
    Consorzio Ferrara Ricerche.
    Akhtar, Nadeem
    University of Surrey.
    Jennen, Ralf
    RWTH Aachen University.
    Validation of the Ambient Networks System Architecture2007Ingår i: Proceedings of the Second International Conference on Communications and Networking in China, ChinaCom 2007, IEEE , 2007, s. 784-791Konferensbidrag (Refereegranskat)
    Abstract [en]

    The Ambient Networks project develops a complete and coherent solution for control architectures in future networks. In particular, the concept of Ambient Control Space has been proposed to support a technology-agnostic, modular and dynamic control plane. The second phase of the project (2006-2007) has an increased focus on validation, where two complementary tracks are being followed: proof-of- concept prototyping and performance evaluation through simulations. The prototype modules, focusing on requirement engineering, were validated during the process of integrating them into a common control space prototype, which was later used to build the demonstration setups. The system performance evaluation through simulations deals with aspects such as capacity utilization, reachability, cost and performance trade-offs and also provides evidence that the additional AN features (e.g., composition) do not introduce excessive signaling overhead. We target different composition aspects, advertising & discovery, negotiation of composition agreements and their interaction with multi-radio access and mobility control. Our validation approach is based on several use cases.

  • 42.
    Burman, Peter
    et al.
    BolidenMineral AB.
    Boström, Jan
    Post och telestyrelsen.
    Mölleryd, Bengt
    Post och telestyrelsen.
    Stiwne, Anna
    ÅkerströmsBjörbo AB.
    Enmalm, Peter
    ÅkerströmsBjörbo AB.
    Beckman, Claes
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS.
    Slutrapport: Genomförbarhetsstudie - Lokala nät och lokal spektrumanvändning för industriella radiosystem2021Rapport (Övrigt vetenskapligt)
    Abstract [sv]

    I denna rapport sammanfattar vi utfört utredningsarbete för den studie som vi genomfört under perioden november 2020 – mars 2021 avseende lokala 5G-nät för industrin.

    Medverkande har varit Boliden Mineral AB, Åkerströms i Björbo AB, Post- och Telesturelsen (PTS) samt KTH. Studien har finansierats av det strategiska innovationsprogrammet Smartare elektroniksystem  - en gemensam satsning av Vinnova, Formas och Energimyndigheten.

    Rapporten rymmer två typer av material, dels beskrivning av nuläge dels analys och slutsatser.Nulägesbeskrivningen för 5G innefattar: status för spektrumtilldelning och utbyggnad av nät i några länder samt om forskning och standardisering vad gäller lokala 5G-nät för industrin.

    Analysdelen består av resonemang och resultat inom fyra olika områden: i) krav och behov, ii) möjliga scenarier och alternativ för systemlösningar, iii) kort summering av centrala tekniska faktorer för lokala nät avsedda för industrin, samt iv) sammanställning av utmaningar för olika aktörer och för spektrumtilldelning.

    Icke-publika nät (Non-public networks, NPN) är ett globalt fenomen med stort stöd och intresse från existerande ekosystem inom industri och telekom men även från helt nya spelare från tex IT industrin. NPN drivs av industrins behov av säker och tillförlitlig uppkoppling för digitalisering och automatisering av sina processer. Idag är industrins uppkoppling främst trådbunden, alternativt så använder man sig av ”proprietära”- eller WiFi baserade system i icke-licensierade band (alternativt smala frekvensband specifikt dedicerade för olika industriprocesser). Trådbunden uppkoppling är långsiktigt inte önskvärt för industrin då det begränsar rörligheten.

    För tillverkare av industriell radiostyrning är slutsatsen att man långsiktigt måste förbereda sig på att migrera från punkt-till-punkt kommunikation till användning av cellulära nätverk. För att industriföretag skall kunna ta beslut om investering i cellulär teknik för uppkoppling   istället för tex WiFi, krävs långsiktighet både tekniskt och affärsmässigt. Det är därför viktigt att man kan tillhandahålla frekvenser för industriellt bruk. 

    Bandet 3,72-3,80 GHz är i många länder tilldelat för lokala tillstånd. Detta band är definierat för TDD och behöver synkroniseras med operatörernas nät samt även använda samma fördelning av trafik mellan upp-och nedlänk som dessa nät. Industrins kapacitetsbehov är främst i upplänk medan operatörsnäten främst tillhandahåller video i nedlänk. Vidare finns ett antal andra utmaningar för samexistens mellan lokala nät och operatörsnät. Det är i nuläget oklart om man via endast TDD-tillstånd i 3,5 GHz eller högre frekvensband kommer att kunna tillfredsställa alla behov inom området industriell radiostyrning och icke publika nät.

    Sammanfattningsvis kan vi konstatera att detta projekt har identifierat ett antal osäkerheter  och utmaningar avseende lokala 5G-nät för industrin. Vår bedömning är att dessa är så stora att det i nuläget saknas underlag för att definiera ett större utvecklingsprojekt. För att kunna definiera ett relevant projekt för att utveckla och testa 5G baserad system för industriell radiostyrning behöver ytterligare underlag tas fram. Dessutom bör man även invänta beslut från PTS avseende allokering av frekvenser för industrin. 

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  • 43.
    Cedervall, Catarina
    et al.
    TeliaSonera Sweden.
    Karlsson, Peter
    TeliaSonera Sweden.
    Prytz, Mikael
    Ericsson Research.
    Hultell, Johan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Bria, Aurelian
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Rietkerk, Oscar
    TNO, The Netherlands.
    Karla, Ingo
    Alcatel, Germany.
    Initial findings on business roles, relations and cost savings enabled by Multi-Radio Access Architecture in Ambient Networks2005Konferensbidrag (Refereegranskat)
    Abstract [en]

    The multi-radio access architecture within the ambient network concept opens up opportunities for new business roles within the mobile and wireless domain. The new business roles take advantage of the control plane functionality that enables cost efficient connectivity over heterogeneous radio access technologies.

  • 44.
    Châtaignier, Arnaud
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Ahmed, Ashraf Awadelkarim Widaa
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Teslenko, Maxim
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Regulation development on licensed shared access and TV white spaces2014Ingår i: Der Open-Access-Publikationsserver der ZBW, Brussels: ITS , 2014Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    For several years, the demand for data has increased. Furthermore, this is a growing trend. There are three ways to meet this demand. One option is to make the network denser; this implies large investments. We can work on improving the bandwidth efficiency; unfortunately, the channel limit is about to be reached[1]. Finally, the bandwidth allocated to telecommunication can be enlarged. Indeed, there are large spaces on spectrum which have been underused by the army or by the TV broadcasters. These players employ only a part of their allocated frequencies or use them only in a restricted area or time. Thus, regulatory frameworks are under construction to allow second users to exploit the locally unused frequencies without harming the incumbent. The two most advanced projects in this area are Licensed Share Access (LSA) and TV White Spaces (TVWS). Under LSA, an agreement is settled between an incumbent who underuses its spectrum (e.g: the Army) and one to several second users (share licensees). The agreement states, among other things, the area where the share licensees can deploy their networks and the conditions leading to its termination. In the case of TVWS, which takes advantage of the locally unused TV frequencies, the number of second users is unlimited and there is no direct contract with the incumbents (TV broadcasters and PMSE1 ). Instead, second users have to obtain the regulator authorization. Concretely, second users inform a database of their localization and the characteristics of their devices and will get in return available channels and power limitations. Even if there is a common understanding of these regulatory frameworks, regulators[2][3] are still working on the definition. This paper aims at presenting in several countries the trends in the regulation of TVWS and LSA. Aspects such as normalization, authorized uses, and allocated bandwidths will be highlighted. From this overall regulatory picture, this research will provide insight on the business development around TVWS and LSA.

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  • 45.
    Espino, Juan
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Analysis of Macro: Femtocell Interference and Implications for Spectrum Allocation2009Ingår i: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2009, s. 5449849-Konferensbidrag (Refereegranskat)
    Abstract [en]

    Deployment of femtocells represents a promising solution to increase cost-capacity benefits for network operators and provide higher data rates to end-users. Femtocells are conceived to provide indoor wireless access to a cellular network through a Home Base Station, which is connected via internet to the operator’s core network, helping to improve coverage in indoors, offload the macrocell and reduce costs for operators. However, large scale deployment of femtocells can severely interfere with the existing macrocell within which they are deployed, particularly when operating in co-channel or in immediate adjacent channels with respect to the macrocell and when using a closed access policy. For instance, macrocell coverage holes in the downlink will appear, i.e. zones in the vicinity of a home base station where interference from home base station signals will prevent macrocell users to receive the desired service from the macrocell network. In this paper, we estimate macrocell coverage holes produced by closed access femtocells when both, macro and femto networks operate FDD WCDMA based technologies. We investigate the case when the home base station transmits at constant power and when uses a power adjustment mechanism, and for different values of separation in the frequency domain. Results show that coverage holes at the edge of the macrocell can have a radius up to 30 meters when the same carrier is used and up to 5 m when carriers separated 5 MHz are used. Finally, we analyze and discuss how coverage and spectrum allocation are influenced by varying the carrier separation.

  • 46.
    Espino, Juan
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Bria, Aurerlian
    On spectrum allocation and interference management for WCDMA and OFDMA femtocells2010Ingår i: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2010, s. 1561-1566Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper we analyze how femtocell base stations (FBS) cause interference in the receivers of user terminals connected to macro base stations. A coverage hole around a FBS appears when closed access strategies are used, i.e. when only authorized users can access the FBS, and when the FBS shares the same or a portion of the macrocell frequency channel. At the cell borders of a macrocell the coverage holes can be large, especially for indoor users (10 – 30 m radius for the investigated cases). The coverage holes can be reduced if different frequency channels are allocated for macrocell and femtocell operation, e.g. down to 1 – 2 m for WCDMA femtocells in adjacent channels. When separation in frequency is not feasible, dynamic channel allocation (OFDMA) or adjustment of the FBS transmission power can be used to reduce the coverage holes. However, the different dynamic strategies have drawbacks in the form of reduced FBS performance and increased system complexity. Operators should consider open access schemes when using co-channel operation.

  • 47. Falch, M.
    et al.
    Markendahl, Jan
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Datavetenskap, Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Introduction2010Ingår i: Promoting new telecom infrastructures: Markets, policies and pricing, Edward Elgar Publishing Ltd. , 2010Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [en]

    Promoting New Telecom Infrastructures examines how current telecom infrastructures are transforming from dedicated networks supporting either voice, data or broadcasting services to converged networks that support a wide variety of communication services, often denoted as Next Generation Networks (NGN). A current key challenge is therefore to define strategies, which can stimulate demand and investments in NGN in order to ensure development of adequate information infrastructures. With contributions from leading authorities in the field, this innovative book explores the three key themes related to this challenge and to strategies for the stimulation of demand and supply for NGN: strategies for expansion of broadband, pricing in NGN and development and pricing of mobile services.

  • 48. Falch, M.
    et al.
    Markendahl, JanKTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikation: Infrastruktur och tjänster, Kommunikationssystem, CoS. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, KTH Center för Trådlösa System, Wireless@kth.
    Promoting new telecom infrastructures: Markets, policies and pricing2010Samlingsverk (redaktörskap) (Refereegranskat)
    Abstract [en]

    '... the book is highly informative on a major contemporary issue in telecommunications: investments in the transition to next generation networks. The contributions provide a wide range of perspectives on the issues including novel approaches. The many empirical contributions provide a bridge between theory and practice.'

  • 49.
    Ghanbari, Amirhossein
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Alvarez Alvarez, Oscar
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Coopetition in M2M Ecosystem - The Case of Smart Cities2015Ingår i: 2015 12TH ANNUAL IEEE INTERNATIONAL CONFERENCE ON SENSING, COMMUNICATION, AND NETWORKING - WORKSHOPS (SECON WORKSHOPS), IEEE , 2015, s. 13-18Konferensbidrag (Refereegranskat)
    Abstract [en]

    During recent years, there has been an increasing interest in the potential opportunities that can be attained with promoting Smart Sustainable Cities (SSC); a concept that can be reached based on Information and Communication Technology (ICT). The SSC concept is then considered achievable by horizontal integration of participating industries in its ecosystem in order to empower sustainability. This approach requires cooperation and sharing resources among co-existing multiple industrial verticals as well as collaboration among competitors (Coopetition). As a result, Machine to Machine (M2M) communications, as the most relevant subcategory of ICT in this context, requires proper coopetition patterns in its ecosystem. In this paper we identify the major roles (activities) in the M2M ecosystem in the context of Smart Cities. Next we define the actors who are capable of performing these roles and present a diagram showing plausible business relations among them. Eventually we discuss the complexity of resources in this context and present different forms of sharing resources among participating actors that is based on coopetition.

  • 50.
    Ghanbari, Amirhossein
    et al.
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Laya, Andres
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS.
    Alonso-Zarate, J.
    Markendahl, Jan
    KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Radio Systems Laboratory (RS Lab).
    Business Development in the Internet of Things: A Matter of Vertical Cooperation2017Ingår i: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 55, nr 2, s. 135-141, artikel-id 7842424Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Smart and connected devices can improve industrial processes, and generate new and better services. While this premise is well understood within the ICT industry, there is a challenge in extending this knowledge to vertical industries. The potential of the Internet of Things lies in the interaction among industries working together toward value co-creation. Firms need to look beyond their internal business models and explore cooperative perspectives to define new business opportunities. In this article, we look into the relevance of vertical cooperation in the area of IoT and highlight the need to develop new value networks that leverage this cooperation and enable the creation of new business models. To lead our discussions, we use the examples of two major building blocks of smart cities: intelligent transport systems and health and well being services based on connected devices and solutions.

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