Communication networks and mobile devices integrate an increasing number of access technologies. At the same time, new business roles emerge, which lead to new cooperation schemes between access providers providing different types of access connectivity. As a result, a variety of access technologies will be available for users at the same time. In this article we present an architecture and a framework capable of integrating different access systems into a multi-access system and selecting the best suited access for users. A utilitybased approach is proposed for the evaluation of different access allocation choices, which is based on user and network policies, the performance of access bearers, and the availability of access resources. We present a general multi-access management framework, which integrates the different multi-access related functions: access detection, access evaluation and access selection, which can then lead to an access handover.
PostprintThis is the accepted version of a paper published in IEEE Communications Magazine. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. Citation for the original published paper (version of record):Vondra, M., Dinc, E., Prytz, M., Frodigh, M., Dominic, S. et al. (2017) Performance Study on Seamless DA2GC for Aircraft Passengers Toward 5G. Magazine, https://doi.org/10.1109/ MCOM.2017.1700188 Access to the published version may require subscription. N.B. When citing this work, cite the original published paper. IEEE Communications(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Permanent link to this version:http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211292 © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
PostprintThis is the accepted version of a paper published in IEEE Communications Magazine. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Ergin, D., Vondra, M., Hofmann, S., Schupke, D., Prytz, M. et al. (2017) In-Flight Broadband Connectivity: Architectures and Business Models for HighCapacity Air-toGround Communications. IEEE Communications MagazineAccess to the published version may require subscription. N.B. When citing this work, cite the original published paper. On-board broadband services are provided via air-toground (A2G) connectivity through direct A2G communications (DA2GC) and satellite A2G communications (SA2GC). Available on-board connectivity systems have significant limitations: high latency in SA2GC and low capacity in DA2GC. The customer expectancy is multi-Mbps connections in every seat which leads to capacity requirements of Gbps to the aircraft. Creation of high capacity IFBC requires a collaborative interaction between different industrial partners. For this reason, we investigate A2G architectures in terms of economic and technical perspectives, and propose business models by identifying new roles and positioning them in the A2G business ecosystem. In addition, we provide an extensive summary of the state-of-the-art and future improvements for A2G communications.
-An increasingly wireless world faces new challenges due to the dynamicity of interactions, range of applications, multitude of available radio access technologies and network functionality. The Ambient Networks project recognizes these trends and enables the creation of innovative network solutions for mobile and wireless systems beyond 3G. These networks will enable scalable and affordable wireless networking while providing pervasive, rich and easy-to-use communication. A specific focus lies on enabling advanced capabilities in environments with increased competition as well as cooperation, environments that are populated by a multitude of user devices, wireless technologies, network operators and business actors. The project adopts a modular architecture that enables plug-and-play control extensibility that supports a wide range of different applications and network technologies. Based on a small subset of common functionality, this approach supports the dynamic deployment of advanced internetworking capabilities, such as media-and contextawareness or multi-radio access.
Abstract:Telecommunications networks are fundamental in any telecommunications system. The network has to meet a number of criteria for the performance to be satisfactory. Hence, when designing the network, one may pose a number of optimization problems whose solutions give networks that are, in some sense, optimally designed. As the networks have become increasingly complex, the aid of optimization techniques has also become increasingly important. This is a vast area, and this chapter considers an overview of the issues that arise as well as a number of specific optimization models and problems. Often the problems may be formulated as mixed-integer linear programs. Due to problem size and problem structure, in many cases specially tailored solution techniques need to be used in order to solve, or approximately solve, the problems.
Integration of heterogeneous access technologies to provide multi-radio access allows for dynamic access selection. The "always best connected" paradigm can increase system capacity and end user throughput, as well as, reduce the network deployment costs for multi-radio wireless networks. In this paper we present the functional entities Generic Link Layer and MultiRadio Resource Management, and describe their interactions for access selection. A focus of the paper is to show -with an example given for 3G and WLAN -how existing wireless networks can be migrated to provide multi-radio access functionality. This will be explained for a single operator integrating different radio access standards, as well as, for multiple cooperating network operators.
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