摘要
目的通过对TTDD协议中存在多个中心节点的分析,研究网络中存在多个中心节点及中心节点移动对通信开销的影响。方法采用贪婪算法建立网格,并沿网格转发信息,将TTDD协议总通信开销与SODD进行比较。结果在最差情形下,TTDD的通信开销随着网络中心节点数目的增多和其移动性的增强而逐渐小于SODD。结论该协议采用单路径能够提高网络生存时间。
Objective-To study the effect of multiple central sink nodes and their mobility on the network communication overhead by analyzing and researching on TTDD protocol. Methods-Greedy algorithm is adopted to establish grids, and message is forwarded along the grids. The overall commu nication overhead of TTDD is compared with that of SODD. Results-In the worst case, the communi- cation overhead of TTDD is gradually less than that of SODD with the increase of the number of sink nodes and the enhancement of its mobility. Conclusion-TTDD protocol can extend survival time of network by using single path.
出处
《宝鸡文理学院学报（自然科学版）》
CAS
2014年第1期62-65,共4页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
