Title :
An adaptive GTS allocation mechanism in IEEE 802.15.4 for various rate applications
Author :
Zhang, Haijun ; Xin, Shulin ; Yu, Rong ; Lin, Zheng ; Guo, Yanyan
Author_Institution :
Northern Electron. Instrum. Inst., Beijing, China
Abstract :
IEEE 802.15.4 standard provides a Guaranteed Time Slot (GTS) mechanism for time sensitive wireless networks in the beacon-enabled mode. However, the bandwidth underutilization problem may become worse when the traffic flow with various arrival rates leads to variance between the arrival rate and the guaranteed bandwidth which is allocated to satisfy the case of the maximal arrival rate. To overcome this limitation, we propose an Adaptive GTS Allocation scheme through feedback mechanism in beacon-enabled IEEE 802.15.4 networks to periodically reallocate the GTS bandwidth, taking into account the current arrival rate specifications and delay requirement of traffic flows. We validate the efficiency of the proposed scheme by simulation by comparing it with the MAC protocol of IEEE 802.15.4.
Keywords :
access protocols; bandwidth allocation; feedback; personal area networks; telecommunication traffic; GTS bandwidth; IEEE 802.15.4; MAC protocol; adaptive GTS allocation mechanism; arrival rate; feedback mechanism; guaranteed time slot mechanism; time sensitive wireless networks; traffic flows; Bandwidth; Calculus; Feedback; Home automation; Instruments; Protocols; Telecommunication traffic; Traffic control; Wireless networks; Wireless sensor networks; GTS; IEEE 802.15.4; WSNs;
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
DOI :
10.1109/CHINACOM.2009.5339871
