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  • 1.
    Agüero, Ramón
    et al.
    University of Cantabria, Spain.
    Berg, Miguel
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Choque, Johnny
    University of Cantabria, Spain.
    Hultell, Johan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Jennen, Ralf
    RWTH Aachen University, Germany.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, 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 Networks2005Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Chatzimichail, Konstantinos
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Cavdar, Cicek
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Techno-economics of Green Mobile Networks Considering Backhauling2014In: European Wireless 2014; 20th European Wireless Conference; Proceedings of, Barcelona: VDE Verlag GmbH, 2014, 1-6 p.Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Impact of the flexible spectrum aggregation schemes on the cost of future mobile network2015In: 2015 22nd International Conference on Telecommunications, ICT 2015, IEEE conference proceedings, 2015, 96-101 p.Conference paper (Refereed)
    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. © 2015 IEEE.

  • 4.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Cavdar, Cicek
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Interplay Between Cost,Capacity and Power Consumption in Heterogeneous Mobile Networks2014In: 2014 21st International Conference on Telecommunications, ICT 2014, Lisbon: IEEE Press, 2014, , 5 p.98-102 p.Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Cavdar, Cicek
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Study on the effects of backhual solutions on indoor mobile deployment "macrocell vs. femtocell"2013In: 2013 IEEE 24th International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), IEEE conference proceedings, 2013, 2444-2448 p.Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Evaluation of Spectrum Access Options for Indoor Mobile Network Deployment2013In: 2013 IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops), IEEE , 2013, 138-142 p.Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Investment strategies for different actors in indoor mobile market: "in view of the emerging spectrum authorization schemes"2013In: 24th European Regional Conference of the International Telecommunication Society, Florence, Italy, 20-23 October 2013, 2013Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    The Incentives and Challenges of Delivering Linear Broadcasting Services over Cellular Network in Developing Countries: Sudan as Case study2014In: The 25th European Regional Conference of the International Telecommunications Society,Brussels, Belgium, 22nd - 25th June 2014, Brussels: nternational Telecommunications Society , 2014Conference paper (Other academic)
    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. 

  • 9.
    Ahmed, Ashraf Awadelkarim Widaa
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Toward capacity-efficient, cost-efficient and power-efficient deployment strategy for indoor mobile broadband2013In: 24th European Regional ITS Conference, Florence 2013, 2013Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Yang, Yanpeng
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Won Sung, Ki
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    On the Engineering Value of Spectrum in Dense Mobile Network Deployment Scenarios2015Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Huang, Jin
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Selvakumar, Ekambar
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Tollmar, Konrad
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Blennerud, Greger
    Ericsson.
    How can Mobile Music Streaming Service Take off in India, China and Indonesia?: Analysis of Drivers and Obstacles2012In: , 2012Conference paper (Refereed)
  • 12.
    Aidi, Laili
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Tollmar, Konrad
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Blennerud, Greger
    Ericsson.
    Competing or Aligning? Assessment for Telecom Operator's strategy to address OTT TV/Video services2012Conference paper (Refereed)
    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.

  • 13. Akhtar, Nadeem
    et al.
    Markendahl, Jan
    Univ Surrey.
    Moessner, Klaus
    Analysis of Complexity and Transaction Costs For Cooperating Networks2007In: 2007 IEEE 18TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-9, 2007, 4270-4274 p.Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Queseth, Olav
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Analysis of Signaling Load and Negotiation Complexity using Network Composition2007Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    A COMPARATIVE STUDY OF SMART GRID DEVELOPMENT IN DEVELOPED AND DEVELOPING COUNTRIES2014Conference paper (Refereed)
    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.

  • 16.
    Alvarez Alvarez, Oscar
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Ghanbari, Amirhossein
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Smart Energy: Competitive Landscape and Collaborative Business Models2015In: 2015 18th International Conference on Intelligence in Next Generation Networks, ICIN 2015, IEEE Communications Society, 2015Conference paper (Refereed)
    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.

  • 17.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Capabilities for Network Operations and Support of Customers’ Working Processes2007Conference paper (Refereed)
    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, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Value added services and new business roles for support of mobile professional users and project working processes2008Conference paper (Refereed)
    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.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, 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 technology2011In: The IMP Journal, ISSN 0809-7259, Vol. 5, no 3, 193-211 p.Article in journal (Refereed)
    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.

  • 20.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, 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 services2011In: The IMP Journal, ISSN 0809-7259, Vol. 5, no 1, 23-41 p.Article in journal (Refereed)
    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.

  • 21.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, 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 technology2010Conference paper (Refereed)
    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.

  • 22.
    Andersson, Per
    et al.
    Handelshögskolan, Stockholm School of Economics.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Mattsson, Lars-Gunnar
    Handelshögskolan, Stockholm School of Economics.
    Tjänsteinnovationer och marknadsomvandling: fallet mobila betalningar2011In: Morgondagens industri: Att sätta spelregler och flytta gränser  (EFI Yearbook 2011) / [ed] I. Benson, J. Lind, E. Sjögren, F. Wijkström, Lund: Studentlitteratur, 2011Chapter in book (Refereed)
  • 23.
    Apanasevic, Tatjana
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Stakeholder’s expectations: Mobile payments in retail in Sweden2014In: 13th International Conference on Mobile Business, 2014 (ICMB 2014), London, June 4-5, 2014, 2014Conference paper (Refereed)
    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.

  • 24.
    Apanasevic, Tatjana
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    The mobile payment in retail: Teaching case summary2013In: 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, 2013Conference paper (Refereed)
    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.

  • 25.
    Apanasevic, Tatjana
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    An exploratory study of consumer attitudes towards mobile ticketing in Sweden2013In: 24th European Regional Conference of the International Telecommunications Society: Technology, Investment and Uncertainty, ITS , 2013Conference paper (Refereed)
    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.

  • 26.
    Apanasevic, Tatjana
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    Stakeholders’ Expectations of Mobile Payment in Retail: Lessons from SwedenManuscript (preprint) (Other academic)
  • 27.
    Apanasevic, Tatjana
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.).
    Stakeholders' expectations of mobile payment in retail: lessons from Sweden2016In: International Journal of Bank Marketing, ISSN 0265-2323, E-ISSN 1758-5937, Vol. 34, no 1, 37-61 p.Article in journal (Refereed)
    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.

    The full text will be freely available from 2018-01-01 09:16
  • 28.
    Apanasevic, Tatjana
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth. KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Arvidsson, Niklas
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Entrepreneurship and innovation.
    Stakeholder’s expectations: The case of mobile public transport ticketing in Sweden2014In: 13th International Conference on Mobile Business, 2014 (ICMB 2014), London, June 4-5, 2014, 2014Conference paper (Refereed)
    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.

  • 29.
    Azari, Amin
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Istiak Hossain, Mohammad
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    RACH Dimensioning for Reliable MTC over Cellular Networks2017In: VTC 2017 Spring, Sydney, 2017Conference paper (Refereed)
    Abstract [en]

    Successful implementation of massive machine-typecommunications (MTC) service over cellular networks is animportant enabler of Internet of things. As the existing cellularinfrastructure has been designed and optimized for moderatetraffic, the introduction of MTC in cellular networks results inseveral key challenges, among them, temporal starvation of initialaccess resources is of paramount importance. Here, we proposea new traffic model for cellular networks serving machine-typesubscribers. This model is subsequently used to derive closedformexpressions for the access rate performance of the system.This closed-form expression are subsequently used for RACHresources planning in the time and frequency domains. Given atarget access rate requirement, numerical analysis indicates howand when the required RACH resources in the code/frequencydomain, i.e. number of preambles, can be traded with theoccurrence frequency of RACH slots in the time domain.

  • 30.
    Ballesteros, Luis Guillermo Martinez
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Alvarez, Oscar
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Quality of Experience (QoE) in the smart cities context: An Initial Analysis2015In: 2015 IEEE FIRST INTERNATIONAL SMART CITIES CONFERENCE (ISC2), 2015Conference paper (Refereed)
    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.

  • 31.
    Ballesteros, Luis Guillermo Martinez
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Ickin, Selim
    Fiedler, Markus
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Tollmar, Konrad
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Wac, Katarzyna
    Energy Saving Approaches for Video Streaming on Smartphone based on QoE Modeling2016In: 2016 13TH IEEE ANNUAL CONSUMER COMMUNICATIONS & NETWORKING CONFERENCE (CCNC), Institute of Electrical and Electronics Engineers (IEEE), 2016Conference paper (Refereed)
    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.

  • 32.
    Berg, Miguel
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    A Concept for Public Access to Privately Operated Cooperating Local Access Points2005In: IEEE Vehicular Technology Conference, New York: IEEE , 2005, 2959-2963 p.Conference paper (Refereed)
    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.

  • 33.
    Bria, Aurelian
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, 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 Architecture2007In: Proceedings of the Second International Conference on Communications and Networking in China, ChinaCom 2007, IEEE , 2007, 784-791 p.Conference paper (Refereed)
    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.

  • 34.
    Cedervall, Catarina
    et al.
    TeliaSonera Sweden.
    Karlsson, Peter
    TeliaSonera Sweden.
    Prytz, Mikael
    Ericsson Research.
    Hultell, Johan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Bria, Aurelian
    KTH, School of Information and Communication Technology (ICT), Communication Systems, 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 Networks2005Conference paper (Refereed)
    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.

  • 35.
    Châtaignier, Arnaud
    et al.
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Ahmed, Ashraf Awadelkarim Widaa
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Teslenko, Maxim
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Regulation development on licensed shared access and TV white spaces2014In: Der Open-Access-Publikationsserver der ZBW, Brussels: ITS , 2014Conference paper (Other academic)
    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.

  • 36.
    Espino, Juan
    et al.
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Analysis of Macro: Femtocell Interference and Implications for Spectrum Allocation2009In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2009, 5449849- p.Conference paper (Refereed)
    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.

  • 37.
    Espino, Juan
    et al.
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Bria, Aurerlian
    On spectrum allocation and interference management for WCDMA and OFDMA femtocells2010In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2010, 1561-1566 p.Conference paper (Refereed)
    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.

  • 38. Falch, M.
    et al.
    Markendahl, JanKTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture (Closed 20120101), Communication Systems, CoS (closed 2012-01-01). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Promoting new telecom infrastructures: Markets, policies and pricing2010Collection (editor) (Refereed)
    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.'

  • 39.
    Ghanbari, Amirhossein
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Laya, Andres
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Alonso-Zarate, J.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Business Development in the Internet of Things: A Matter of Vertical Cooperation2017In: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 55, no 2, 135-141 p., 7842424Article in journal (Refereed)
    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.

  • 40.
    Ghanbari, Amirhossein
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Laya, Andrés
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Value Creation and Coopetition in M2M Ecosystem: - The Case of Smart City2016In: 2016 IEEE 27TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC), IEEE , 2016, 330-335 p.Conference paper (Refereed)
    Abstract [en]

    Wireless ICT as a subcategory of the ICT industry has long been serving end users as its direct customers. The value for end users, i.e. connectivity as the end product of this industry, has been created in a linear chain where two major group of actors have been cooperating with each other: Telecom Equipment Vendors (TEV) and Mobile Network Operators (MNO). By the demand of other industries for connecting devices/machines in order to enable various services, Machine to Machine (M2M) communications and Internet of Things have emerged as new concepts where Wireless ICT could serve other industries. As a result “connectivity” became an enabler (service) and not the final product.

    In this paper we argue that linear telecom value chains are incapable of serving this new demand, since wireless ICT requires to co-create value with other industries. This causes the formation of telecom value networks in which traditional telecom actors have to form new (different) business relationships with each other; Cooperation with competitors and Competition with cooperators.

  • 41.
    Ghanbari, Amirhossein
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Awadelakrim Widaa, Ashraf
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Cooperation patterns in Smallcell networks: Risks and opportunities to distinguish the win-win model2013Conference paper (Refereed)
    Abstract [en]

    Cooperation and collaboration with either competitors and/or other actors in the ecosystem seems to become a relevant method for Mobile Network Operators (MNOs) in order to decrease costs and boost revenues at the same time. But, there are always risks and imperfections in front of such models such as losing control over network, empowering existing or potential competitors and unwillingness to contribute evenly in different cases with other actors. In this paper we discuss possible cooperation patterns for indoor smallcell networks, adopted from successful cooperation patterns in macro cellular networks. This is done by analyzing three main areas: Deployment of smallcells, sharing strategies and outsourcing. Based on the works done in this field, an intersection of these three areas is missing that is studying possible cooperation patterns with all possible actors (operators, third parties and Facility owners) of shared smallcell networks.

    The aim of this paper is to see how it is possible to enable cases where all involved actors benefit from the cooperation pattern, by looking into existing solutions as well as proposing new patterns that a multitude of actors may be willing to adopt. Since there is no distinct answer for such a question, the proposed Wholesale model or Comprehensive system helps mobile operators to rethink about smallcell specific business models. This investigation enables distinguishing between revenue-efficient and cost-efficient smallcell network deployments for both operators and other investors.

  • 42.
    Ghanbari, Amirhossein
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Awadelakrim Widaa, Ashraf
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Regulations for and against Cooperation in smallcells: How could regulations stimulate co-opetition by supporting sharing?2013Conference paper (Refereed)
    Abstract [en]

    Cooperation between Mobile Network Operators (MNO), as competing entities, has become a solution to overcome lack of revenue by reducing expenditures during recent years; where theses cooperation patterns consist of horizontal and vertical models. As much as all these models apply in macrocell networks, they are all applicable in smallcell networks as well, but it is observed that smallcells are still deployed in single operator patterns.

    On the other hand, telecom regulatory authorities are always concerned about cooperation between operators since they prefer fare distribution of market power among competing operators. The idea to stimulate competition, in order to bring maximum profit for end users, is an ultimate goal for regulators. At the same time, regulators are worried if a high level of collaboration between operators introduces new dilemmas such as creating “closed clubs” with significant market power.

    In this paper we first discuss interpretations of national European telecom regulators from the European electronic communications regulatory framework, which is considered as a reference for all countries. Surprisingly, we see that European countries have different interpretations of the same European framework while transposing it into their regulations. Next, the effect of these regulations that are either pro or against cooperation in smallcell networks is investigated. We conclude by presenting the idea that European regulators may need to revise their legislations by considering regulation for promoting smallcell wholesale network sharing as the proper solution.

  • 43.
    Ghanbari, Amirhossein
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Álvarez, Óscar
    KTH.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    MTC Value Network for Smart City Ecosystems2016Conference paper (Refereed)
    Abstract [en]

    Looking for new markets and revenue streams, the future Smart Cities comprise a good opportunity for traditional actors of the telecommunication industry. This opportunity requires a new mindset among these actors that corresponds to re-positioning in the Smart City value chain. This means that, in order to play a role that can not be overlooked, Telecom actors should perform rather different blocks of the Smart City value chain compared to their traditional activity blocks in Mobile Telephony value chain. The Fifth Generation of mobile telecommunications technology (5G), by some actors, is then considered as the major ICT enabler for this new paradigm.

    This paper intends to highlight the role of Machine Type Communications (MTC) for enabling Smart Cities. In order to do so, we introduce the building blocks of Smart City followed by four use cases from Intelligent Transport Systems and Digital Built Environment. We use these cases as the proof of concept for defining the generic MTC activities in the context of Smart City. Eventually the paper introduces the MTC value network in the context of Smart City, based on the resources associated with the activities.

  • 44.
    Ghanbari, Amirhossein
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Álvarez, Óscar
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Repositioning in Value Chain for Smart City Ecosystems: -a Viable Strategy for Historical Telecom Actors2015Conference paper (Refereed)
    Abstract [en]

    In a historical business model, Mobile Network operators (MNO) design their own network, own their infrastructure, operate the network and offer services on top of it; a voice-revenue dependent business. Now with the data provisioning, since the revenues associated with data do not comply with the pattern of increasing data usage in mobile networks, MNOs need new revenue streams. As a result, MNOs have started changing their business models by offering services besides their usual competences. This complicated approach has then forced them to think of possible cooperation patterns in order to benefit from horizontal collaboration with others, instead of being vertically integrated. On the Other hand, Telecom Equipment Vendors (TEV) used to design their business models in a vertical manner as well. TEVs would build and manufacture equipment and sell them to their customers in a Business-to-Business (B2B) fashion while in some cases operate the networks on behalf of their customers.

    Looking for new markets and revenue streams, the future Smart Cities comprise a good opportunity for MNOs and TEVs. This opportunity then requires a new mindset among these actors. In the new mindset, these actors should accept to reposition themselves in the new value chain. This means that, in order to play a role that can not be overlooked, MNOs and TEVs should perform rather different blocks of the Smart City value chain. This paper intends to provide an analysis of how the traditional telecom actors (MNOs and TEVs) have changed their business strategy and repositioned in the context of the Smart City service provision. In order to do that, we will introduce the traditional telecom actors and the existing value chain, later on, smart city concept and use cases will be introduced, finalizing with an analysis of how the future smart city value chain and the repositioning of these actors.

  • 45.
    Giles, Tim
    et al.
    KTH, Superseded Departments, Wireless at KTH.
    Markendahl, Jan
    KTH, Superseded Departments, Wireless at KTH.
    Zander, Jens
    KTH, Superseded Departments, Wireless at KTH.
    Zetterberg, Per
    KTH, Superseded Departments, Signals, Sensors and Systems.
    Karlsson, P
    Cost drivers and deployment scenarios for future broadband wireless networks: Key research problems and directions for research2004In: VTC2004-SPRING: 2004 IEEE 59TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS, NEW YORK: IEEE , 2004, 2042-2046 p.Conference paper (Refereed)
    Abstract [en]

    The most prominent problem in providing anywhere, anytime wideband mobile access is the towering infrastructure cost as it is basically proportional to the bandwidth provided. In this paper, we provide a simple, initial, analysis of the various infrastructure cost factors. This analysis shows that, contrary to what one may expect, the infrastructure cost is not dominated by electronic equipment, but rather by other deployment related costs (towers, wiring,, building, network connections) and maintenance costs. In the paper some novel architectural approaches for future wideband mobile access focusing on these dominant cost factors are described and the related key research issues are discussed.

  • 46.
    Giles, Tim
    et al.
    KTH, Superseded Departments, Wireless at KTH.
    Markendahl, Jan
    KTH, Superseded Departments, Wireless at KTH.
    Zander, Jens
    KTH, Superseded Departments, Wireless at KTH.
    Zetterberg, Per
    KTH, Superseded Departments, Wireless at KTH.
    Karlsson, Peter
    TeliaSonera Sweden.
    Lind, Jonas
    Stockholm School of Economics.
    Malmgren, Göran
    Ericsson Research.
    Nilsson, Jan
    Swedish Defense Research Agency.
    Cost Drivers and Deployment Scenarios for Future Braodband Wireless Networks - Key research problems and directions for research2004Conference paper (Refereed)
    Abstract [en]

    The most prominent problem in providing anywhere, anytime wideband mobile access is the towering infrastructure cost as it is basically proportional to the bandwidth provided. In this paper, we provide a simple, initial, analysis of the various infrastructure cost factors. This analysis shows that, contrary to what one may expect, the infrastructure cost is not dominated by electronic equipment, but rather by other deployment related costs (towers, wiring, building, network connections) and maintenance costs. In the paper some novel architectural approaches for future wideband mobile access focusing on these dominant cost factors are described and the related key research issues are discussed.

  • 47.
    Ho, Lester
    et al.
    Lucent.
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
    Berg, Miguel
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Business Aspects of Advertising and Discovery Concepts in Ambient Networks2006In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2006, 2006, 1-5 p.Conference paper (Refereed)
    Abstract [en]

    This paper presents initial findings on how ambient networks technology will enable new ways to establish and manage access and service provisioning from a business perspective. The concepts of network composition and multi-radio multi-operator wireless access provide the framework for network advertising and discovery, which are essential first steps for allowing "any" user to be able to connect to "any" network. Technology support for different options of advertising are described followed by a discussion of the business related aspects including: i) payment schemes, ii) dynamic pricing, iii) use of identifiers for "frequent users", iv) use of public or "private" directories of offers and v) possibilities with alliances between providers. Finally, results of a case study on dynamic pricing are presented. The conclusion is that the proposed concepts of advertising and discovery indicate a very large potential for enabling a competitive market for both access and service provisioning including support for establishment of agreements on the fly.

  • 48.
    Hossain, Mohammad Istiak
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Azari, Amin
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Zander, Jens
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Enhanced Random Access: Initial access load balance in highly dense LTE-A networks for multiservice (H2H-MTC) traffic2017In: 2017 IEEE International Conference on Communications, ICC 2017, Institute of Electrical and Electronics Engineers (IEEE), 2017, 7996622Conference paper (Refereed)
    Abstract [en]

    The Random Access (RA) procedure in existing cellular networks is not capable of functioning properly during high access load conditions. For this purpose, overload control mechanisms are needed. Most proposed mechanisms in the literature offer a tradeoff between access rate and experienced delay. However, when the maximal tolerated delay and the energy spent on retransmissions are tightly bounded, the very high access rate, targeted for 5G systems, cannot be achieved. For these situations, we propose the Delay Estimation based RA (DERA)-scheme that has the potential to meet very stringent reliability requirements, even in high access load conditions. The present work shows that this goal can be achieved only in the cost of limited additional complexity. Furthermore, we also study the optimal switchover point at which the proposed scheme moves from low-load to the high-load phase. The derived tool can also be used along with other proposed RA overload control schemes, e.g. when to invoke access class barring. The performance evaluation results show that the novel DERA scheme can significantly improve the control channels' resource utilization along with the success rate in dense deployment scenarios.

  • 49.
    Hossain, Mohammad Istiak
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Azari, Amin
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Markendahl, Jan
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Zander, Jens
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Enhanced Random Access:: Initial Access Load Balance in HighlyDense LTE-A Networks for Multiservice (H2H-MTC) Traffic2017Conference paper (Refereed)
    Abstract [en]

    The Random Access (RA) procedure in existing cellular networks is not capable of functioning properly during high access load conditions. For this purpose, overload control mechanisms are needed. Most proposed mechanisms in the literature offer a tradeoff between access rate and experienced delays. However, when the maximal tolerated delay and the energy spent on retransmissions are tightly bounded, the very high access rate, targeted for 5G systems, cannot be achieved. For these situations, we propose the Delay Estimation based RA (DERA)-scheme that has the potential to meet very stringent reliability requirements, even in high access load conditions. The present work shows that this goal can be achieved only at the cost of limited additional complexity. Furthermore, we also study the optimal switchover point at which the proposed scheme moves from low-load to the high-load phase. The derived tool can also be used along with other proposed RA overload control schemes, e.g.when to invoke access class barring. The performance evaluation results show that the novel DERA scheme can significantly improve the control channels’ resource utilization along with the success rate in dense deployment scenarios.

  • 50.
    Hultell, Johan
    et al.
    KTH, Superseded Departments, Wireless at KTH.
    Johansson, Klas
    KTH, Superseded Departments, Wireless at KTH.
    Markendahl, Jan
    KTH, Superseded Departments, Wireless at KTH.
    Business models and resource management for shared wireless networks2004In: VTC2004-FALL: 2004 IEEE 60TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-7 - WIRELESS TECHNOLOGIES FOR GLOBAL SECURITY, NEW YORK: IEEE , 2004, 3393-3397 p.Conference paper (Refereed)
    Abstract [en]

    In this paper we analyze main use cases for sharing wireless access networks between multiple operators and service providers. Network sharing has been proposed as a metho l to lower roll-out costs for 3G operators in Europe, and is widely used in WLAN systems where local access providers offer wireless access to service providers. A similar structure also exist in cellular networks where Mobile Virtual Network Operators (MVNO) provide mobile services without having a mobile network of their own. The development points at a further fragmentation of wireless access networks into specialized service providers that connect to local service and access providers, possibly via an inter-connection provider serving with core network functionality. In this context, we propose a framework for how radio resources could be managed using Service Level Agreements (SLA) and analyze key differences between the SLA for different types of service and network providers.

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