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  • 1.
    González Sánchez, Pamela
    et al.
    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.
    Khamit, Saltanat M.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Competitive pricing with heterogeneous demand in open wireless access market2011In: Proceedings of the 3rd International IEEE Congress on Ultra Modern Telecommunications and Control Systems (ICUMT), 2011Conference paper (Refereed)
  • 2.
    González Sánchez, Pamela
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
    Khamit, Saltanat
    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).
    Competitive pricing with demand heterogeneity in open wireless access market2011In: International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, 2011Conference paper (Refereed)
    Abstract [en]

    In order to maximize the network profit competitive service providers shall utilize their resources efficiently and price their services taking into account the demand responsiveness in the market. Pricing strategies play an important role in the network performance since they explicitly influence the user demand. Demand uncertainty would cause providers to face lower profits. In this paper, we analyze the price-demand relationship and based on that, we study a competitive pricing game and address an open wireless access market (with different market shares) where service providers' objective is to maximize their profits. The resources are allocated among the users through a proportionally fair divisible auction mechanism. Simulation results show that a resource allocation model, which attracts users to actively participate in the auction, assures fair access while maintaining service providers' profit by adapting the pricing policy with a change in the user demand. Our analysis reveals that the service providers can establish a competitive price of the resources, while capturing a reasonable portion of market share. Under this setting, service providers could learn and predict which pricing policy is beneficial in a competitive environment.

  • 3.
    Karapantelakis, Athanasios
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Communication Systems, CoS.
    Devlic, Alisa
    KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Communication Systems, CoS.
    Zarify, Mohammad
    Khamit, Saltanat
    KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Communication Systems, CoS.
    Printing in Ubiquitous Computing Environments2009In: UBIQUITOUS INTELLIGENCE AND COMPUTING, PROCEEDINGS / [ed] Zhang D; Portmann M; Tan AH; Indulska J, 2009, Vol. 5585, p. 83-98Conference paper (Refereed)
    Abstract [en]

    Document printing has long been considered an indispensable part of the workspace. While this process is considered trivial and simple for environments where resources are ample (e.g. desktop computers connected to printers within a corporate network), it becomes complicated when applied in a mobile context. Contemporary mobile devices have the computational resources required for document processing and are affordable enough for an increasingly large number of users. Therefore, document printing using mobile devices is now both technically feasible and relevant to users' needs. In this study, we present an infrastructure for document printing using mobile devices. In order to realize the vision, we utilize an existing set of network protocols, a set of common programming languages, standard concepts of ubiquitous computing, and machine learning, in order to automate the printing process.

  • 4.
    Khamit, Saltanat
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Market-based Spectrum Sharing in Capacity-limited Heterogeneous Wireless Networks2011In: Proceedings of Communication Technologies Workshop (SWE-CTW), 2011 IEEE Swedish, 2011, p. 86-91Conference paper (Refereed)
    Abstract [en]

    With the launch of flat-rate mobile broadband Internet access, wireless service providers (WSP) have faced a fierce competition for users. This became even more challenging issue with the expansion of smartphones and cloud computing applications driving the demand for mobile broadband access. Allowing users to get service offers freely from any wireless service provider, some aspects should be considered thoroughly. Although the WSP's service coverage has traditionally been considered a legitimate necessity, the network capacity is limited and should be expanded to support a growing user demand. Consequently, the wireless service providers must exploit cost-effective solutions on deployment of radio access technologies that in turn would embody new sources to generate more revenue. These solutions would be affected by the competitor strategies in terms of their network capacity and coverage. In this paper, we consider this problem in the context of competitivewireless networks, operating in heterogeneous coverage areas. We observe market-based spectrum sharing framework that ensures an efficient resource allocation, meanwhile it guarantees profit maximization and facilitates a highspectrum utilization through the WSP competition. The paper presents a rigorous analysis of the framework properties that provides insights into the deployment and pricing strategies. We provide numerical results that can help identify parameters which affect the WSPs' economical viability. These insights can be applied by future WSPs.

  • 5.
    Khamit, Saltanat
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Real-Time Spectrum Access in Heterogeneous Wireless Networks: Competition, Deployment and Pricing2012Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The first decade of twenty-first century has witnessed the spread of innovative wireless technologies: novel wireless network architectures and services; operations in unlicensed bands, advanced mobile devices and smartphones. All these have pondered growing demand for wireless broadband services, so that more spectra are required. Consequently,the advent of flat-rate service pricing for mobile broadband services plus continuous investments in a network infrastructure and shortage of licensed spectrum make it more difficult for current wireless operators (OPs) to financially sustain themselves in a competitive environment.

    Since existing, fixed spectrum allocation (FSA), mechanism offers very limited flexibility, dynamic spectrum access from the market point of view is exploited here to support such flexibility. A framework of competitive spectrum access, where available spectrum can be leased based on the outcome of competition between heterogeneous wireless operators in a short-term fashion, is reviewed in this thesis. The main objectives are: (1) to maximize spectrum efficiency by utilizing market mechanisms in a heterogeneous setting, and (2) to identify which conditions and criteria should be applied to allow heterogeneous wireless networks to be viable in the marketplace.

    Under the competitive spectrum access framework, we explore three directions to tackle these objectives for a case of a two-operators system. First, we will look at how an inter-operator competition can affect the operator profits under an asymmetry in their networks. Then, we will analyze which deployment strategies in a heterogeneous environment should be utilized. Finally, we will consider which pricing strategies can be applied by competing OPs to sustain themselves. Through analysis and extensive simulations, we show that heterogeneous access architectures and the scalable infrastructure deployment could improve not only spectrum utilization efficiency, but also facilitate viability of spectrum allocation in a competitive environment. As a conclusion, we believe that techno-economical approach used to assess a feasibility of the framework could help in the designing of future wireless systems to efficiently utilize both the infrastructure and the spectrum resources.

  • 6.
    Khamit, Saltanat M.
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Zander, Jens
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Competitive Spectrum Allocation in Heterogeneous Coverage Areas2011In: 17th European Wireless Conference 2011, EW 2011, VDE Verlag GmbH, 2011, p. 313-318Conference paper (Refereed)
    Abstract [en]

    It could be costly to deploy a full coverage mobile broadband service with high bandwidth for a single operator. The development of low cost radio network equipment for short range coverage could trigger off a new scenario. Some providers may invest heavily to provide coverage in a wide area, while other providers would invest considerably less to provide coverage in a "hotspot" (small area). There exist two business models; in the first, the providers share their networks explicitly in a cooperative manner. In the second model, the providers compete with each other for users. This paper studies the competitive case, where providers have heterogeneous (partially overlapping) coverage. We analyse which service provisioning conditions are viable to the hotspot provider. The obtained results highlight the importance of infrastructure investments that characterized by degree of competition in the market. The system performance is also affected by the choice of sensitivity towards price and QoS. The results indicate that the hotspot provider could have a profit under given spectrum access mechanism and competition setting, which both would affect the level of the its profitability.

  • 7.
    Khamit, Saltanat
    et al.
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Zander, Jens
    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.
    Towards Open Mobile Broadband Market with Energy-Efficient Deployment2011In: Proceedings of the 10th Scandinavian Workshop on Wireless Ad-hoc Networks (ADHOC'11): Wireless Architectures for the Internet Things, 2011Conference paper (Other academic)
    Abstract [en]

    A growing demand for mobile broadband services will, sooner or later, cause a service provider to face problems in terms of network capacity. The pressurizing situation is more noticeable in a highly competitive environment. It is challenging for a new service provider to maximize the profitability while, at the same time, maintain high quality services. For virtually any network deployment strategy, the service provider will need to look at ways to reduce capital expenses (CAPEX) to decrease the cost per service. A better energy utilization is believed to have the potential to lower the network operation expenses (OPEX) and to balance network coverage versus user traffic. A cost structure and energy-efficiency in the mobile broadband network is crucial for success. In this paper, we consider a competition between incumbent and entrant providers, where the entrant chooses a suitable deployment strategy at the market entry. Both providers are profit- maximizers. We propose two competitive deployment strategies (“Cost Leadership” and “Differential Pricing” strategy) with an energy consumption constraint. The system performance is evaluated in terms of network size (market share), transmitted power, antenna height and user preference. The simplistic model used in this paper gives a clear understanding of investment needed for the expected coverage and capacity of the network. A provider who chooses to deploy a radio access technology smartly, focusing primarily on business strategy and cost efficiency, would benefit greatly.

  • 8.
    Yang, Zhe
    et al.
    Dept. of Signal Processing Processing, Blekinge Institute of Technology.
    Khamit, Saltanat
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Mohammed, A.
    Dept. of Signal Processing Processing, Blekinge Institute of Technology.
    Larson, Peter
    Strategoc Dev., Affärsverken Karlskrona AB.
    A Comparative Study on Business Models of Municipal WirelessCities in US and Sweden2008In: 3rd IEEE/IFIP International Workshop on Business-driven IT Management, 2008. BDIM 2008, IEEE conference proceedings, 2008, p. 116-117Conference paper (Refereed)
    Abstract [en]

    In this paper, we will explore the existing operational "business models" for municipal wireless networks in US and Sweden. Based on the current paradigms of the North-American public wireless networks, we will investigate an emerging wireless city concept in Sweden to analysis this new business concept in the existing field. We will look into the relationship of different actors in various business models of the wireless cities in our selected case studies. This paper will aim to demonstrate a number of key considerations when designing and managing the business model of Municipal wireless networks as business-driven and public utility-driven services.

  • 9.
    Yang, Zhe
    et al.
    Blekinge Institute of Technology, Soft Centre.
    Khamit, Saltanat
    KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
    Mohammed, A.
    Blekinge Institute of Technology, Soft Centre.
    Larson, Peter
    Strategic Dev., Affärsverken Karlskrona AB.
    An Investigation of the Business Model in the Karlskrona Municipal Wireless Network in Sweden2008Conference paper (Refereed)
    Abstract [en]

    In this paper, an investigation on an emerging operational "business model" for the municipal wireless network in the city of Karlskrona in Sweden is explored. We inquire into the association between of different actors involved in the business model implemented by Karlskrona municipality in our selected case study, and identify a number of key considerations in the business model and wireless city services for municipality when it is initializing and deploying the municipal wireless network as a business driven and public-utility driven service.

1 - 9 of 9
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  • en-US
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  • Other locale
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