IC-MAC: A Dynamic Scheduling Supported MAC Protocol Optimized for Intra-cluster Communication
Cluster-based architecture is a widely and deeply studied network architecture used in wireless sensor networks. With enough available channels and proper channel assignment policy, clusters using the same channel can be separated distant enough to avoid interference from each other. In each such cluster, the traffic demand usually exists only between the cluster head and the end nodes. We refer to such kind of communication pattern as Independent intra-cluster communication (IICC) pattern. In this paper we present IC-MAC, a MAC protocol specifically optimized for such a communication pattern. IC-MAC is a variant of IEEE 802.15.4 and it introduces a dynamic scheduling mechanism into the superframe structure of 802.15.4. With this mechanism, IC-MAC uses the slotted CSMA/CA algorithm under low network load, and can automatically switch to schedule-based transmission when the load becomes high. Simulation results show that the performance of IC-MAC exceeds IEEE 802.15.4 overwhelmingly under the IICC pattern, and the advantage is especially obvious under high network load.
Zhihao Xing Hong Wang Peng Zeng Wei Liang
Shenyang Institute of Automation,CAS Graduate School of the Chinese Academy of Sciences Beijing 1000 Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016
国际会议
2006 IEEE International Conference on Information Acquisition
山东威海
英文
144-148
2006-08-20（万方平台首次上网日期，不代表论文的发表时间）