The Study of MAC Protocol Fairness for WBANs

摘要：

The IEEE 802.15.4 standard is specifically devised to support low power, low data rate in relation to Wireless Body Area Network (WBAN). It is pointed out that weaknesses of channel allocation unfairness when using DCF access control scheme due to its inherent nature of binary exponentially backoff algorithm. So, this paper proposes an improved back off algorithm in slotted CSMA/CA, to dynamically change the minimum contention window each time CSMA/CA begins, according to the network load conditions. The presented based on Two-dimensional Markov chain model. Theoretical analysis and simulation results show that the proposed algorithm can decrease the collision ratio and the retransmission ratio, resulting significant power saving and throughput improvement when the traffic load is high.

关键词： IEEE 802.15.4 Wireless Body Area Network (WBAN) CSMA/CA Backoff Algorithm Markov Chain

作者: Xin Feng

作者单位: School of Compuer Science and Technology Changchun University of Science and Technology Changchun, 130022, China

会议类型: 国际会议

会议名称: 2011 International Conference on Computer Science and Network Technology(2011计算机科学与网络技术国际会议 ICCSNT 2011)

会议地点: 哈尔滨

会议语种:英文

页码: 795-799

在线出版日期: 2011-12-24（万方平台首次上网日期，不代表论文的发表时间）