摘要
针对现今无线移动自组网广泛使用的贪婪地理路由协议GPSR中传统贪婪转发策略单纯寻求最小跳数而不考虑节点负载致使网络拥塞的缺点,提出了一种基于模糊逻辑控制的改进贪婪转发策略,从负载均衡角度出发,利用模糊控制器主动选取转发节点,以达到减少转发时延,稳定节点队列长度,提高转发效率的目标。分析表明,所提策略通过动态调控数据向备选节点分发,较好地克服了传统转发策略中网络拥塞问题,提高了数据传输的实时性和可靠性。
With regard to the GPSR （greedy perimeter stateless routing） , which was widely used in MANET nowadays, considering the problems in the GPSR＇ s traditional greedy forwarding schemes based MND （most nearest to destination） , here this paper proposed a distributed load balancing approximation algorithm for greedy geographical routing based on fuzzy logic con- trol. From the load-balanced aspect, the new scheme could actively choose the next-hop node in order to decline the end-toend delay, stabilize the queue length and improve the transmitting efficiency. The theoretic analysis proves that the new greedy forwarding schemes based on fuzzy logic control is capable of overcome the congestion that the traditional greedy forwarding schemes of greedy geographical routing do not explicitly account for local congestions of next-hop node and often select the same MND nodes to transfer data. It can realize load-balanced aim by avoiding the heavy-load nodes, and increas the efficiency and reliability.
出处
《计算机应用研究》
CSCD
北大核心
2011年第1期282-286,共5页
Application Research of Computers
基金
国家航空基金资助项目(20095596016)
陕西省自然科学基金资助项目(2009JM8010
2010JQ8010)
关键词
贪婪边界无状态路由
贪婪转发策略
模糊逻辑控制
负载均衡
队列长度
greedy perimeter stateless routing （GPSR）
greedy forwarding schemes
fuzzy-logic control
load-balanced
queue length
