TDMA Scheduling and Handoff Prioritization Schemes in Wireless Networks
One of the major problems in wireless multihop networks is the scheduling of transmissions in a fair and efficient manner. Time Division Multiple Access (TDMA) seems to be one of the dominant solutions to achieve this goal, since it is a simple scheme and can prolong the devices’ lifetime, by allowing them to transmit only portion of the time during conversation. For that reasons several TDMA scheduling algorithms may be found in the literature. In the scope of this talk, a classification of the existing TDMA scheduling algorithms based on several factors is presented, i.e. the entity that is scheduled, the network topology information that is needed in order to produce or maintain the schedule and the entity/entities that perform the computing for producing and maintaining the schedules, and to discuss the advantages and disadvantages of each category.
Also, Handoff is a key element in the wireless cellular networks in order to provide Quality of Service (QoS) to the users and to support users’ mobility. Handoff failure will result in the forced termination of an ongoing call. From the user’s point of view, the service of a handoff request is more important, as the forced termination of an ongoing call is more annoying than the blocking of new calls. Therefore, in order to support QoS to the users and to provide ubiquitous coverage, the handoff procedure should be further investigated. The aim of this lecture is to provide a comprehensive survey of the basic elements, the different types and phases of the handoff procedure.
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Dimitrios D. Vergados
Assistant Professor, Department of Informatics University of Piraeus
Member of the Plenary of the Hellenic Telecommunications and Post Commission
Short CV
Dimitrios D. Vergados [vergados@unipi.gr] is an Ass. Professor in the Department of Informatics of the University of Piraeus. His research interests are in the area of Computer Networks and Telecommunication Systems, Cloud Computing and Green Technologies, and Computer Vision. He has several publications in journals, books and conference proceedings. He has served as a chair and a Technical Program Committee member in several international conferences; a member of the Editorial Board in International Journals and a reviewer in several journals and conferences. He has also served as a committee member and evaluator in National and International Organizations and Agencies. He is a member of the Plenary of the Hellenic Telecommunications and Post Commission. He is an IEEE Senior Member.