A cross-layering based autonomic approach for QoS support in heterogeneous wireless networks

Authors:
Tara Ali Yahiya;Kaouthar Sethom;Guy Pujolle;Andre-Luc Beylot
Affiliations:
Computer Science Laboratory, University of Pierre et Marie Curie, 104 Avenue du President Kennedy, 75016 Paris, France.;Computer Science Laboratory, University of Pierre et Marie Curie, 104 Avenue du President Kennedy, 75016 Paris, France.;Computer Science Laboratory, University of Pierre et Marie Curie, 104 Avenue du President Kennedy, 75016 Paris, France.;ENSEEIHT, IRIT Laboratory, 2, rue C. Camichel, BP 7122, F-31071 Toulouse Cedex 7, France
Venue:
International Journal of Communication Networks and Distributed Systems
Year:
2008

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Abstract

Future network environments will be heterogeneous and mobileterminals will have the opportunity to dynamically select amongmany different access technologies. Therefore, it is important toprovide service continuity in case of vertical handoffs whenterminals change the access technology. Two important wirelessaccess technologies are WLAN (wireless local access networks) andWMAN (wireless metropolitan access networks) networks. In thisarticle, we address several challenges related to a seamlessintegration of those technologies. We highlight important aspectsfor designing WLAN/WMAN interworking architecture on the basis ofIEEE 802.21 framework. Then, we address important quality ofservice (QoS) issues for such interworked systems like degree ofQoS support provided by the technologies, QoS mapping andsignalling for vertical handoff. We combine concepts of autonomiccomputing in the design of the framework in order to useintelligence to provide flexibility, accessibility and transparencyto the mobile users.