Abstract: To improve the efficiency of reliable broadcast/multicast MAC protocol in Wireless Sensor Network(WSN), this paper proposes an elimination algorithm for redundancy of acknowledgment based on geographical location information. This algorithm uses neighbors’ geographical location information to construct the minimum equivalent collision area for broadcast/multicast packet, which wipes off the redundant nodes from receiver nodes set in terms of acknowledgement. Simulation results show that this algorithm can decrease the number of nodes joining in acknowledgment with reliability, reduce packet sending cost and guarantee the packet transmission quality more efficiently.

Key words: Wireless Sensor Network(WSN), Media Access Control(MAC) protocol, reliable broadcast/multicast, redundancy of acknowledgment

摘要： 为了提高无线传感器网络中可靠广播/组播MAC协议的效率，提出一种基于地理位置信息的确认冗余度消除算法。该算法利用节点的地理位置信息，建立广播/组播分组的最小等价冲突域，消除接收节点集合中对确认而言非必要的冗余节点。仿真结果表明，该算法能在保证可靠性的前提下有效减少参与确认的节点个数，降低分组的发送开销，更高效地保证分组传输质量。

关键词: 无线传感器网络, 媒体接入控制协议, 可靠广播/组播, 确认冗余度

CLC Number: 

• TN915.04