Title :
Improving the Performance of the Distributed Scheduler in IEEE 802.16 Mesh Networks
Author :
Bayer, Nico ; Xu, Bangnan ; Rakocevic, Veselin ; Habermann, Joachim
Author_Institution :
T-Systems Enterprise Services GmbH, Darmstadt
Abstract :
Wireless mesh networks are a viable solution to provide broadband wireless access (BWA) in a cost efficient and flexible manner. The IEEE 802.16 standard is currently one of the most interesting BWA standards. Besides the popular point-to-multipoint mode it defines an optional mesh mode. This paper evaluates the performance of the coordinated distributed scheduler (C-DSCH), defined by the IEEE 802.16 standard for mesh mode. Analytical as well as simulation results show, that this mechanism has a scalability problem that leads to poor performance in dense networks and aggravates QoS provisioning. To solve this, a dynamic adaptation mechanism is proposed, that is able to reduce the contention and to enhance the performance (throughput) in dense networks.
Keywords :
WiMax; broadband networks; quality of service; telecommunication network management; IEEE 802.16 mesh networks; QoS provisioning; broadband wireless access; coordinated distributed scheduler; dense networks; distributed scheduler; dynamic adaptation mechanism; point-to-multipoint mode; scalability problem; wireless mesh networks; Analytical models; Costs; Mathematical model; Mesh networks; OFDM; Scalability; Scheduling; Throughput; Time division multiple access; Wireless mesh networks;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.252