摘要
提出了基于无线广播优势的负载感知多信道多播(W-LMCM)算法,以解决最大化服务用户数的多播路由与信道分配问题,将起始于同一节点的兄弟链路视为整体进行信道分配,充分利用无线广播优势节省带宽;提出最大信道号信道分配方法,避免随机信道分配带来的不利影响;在满足干扰范围内信道容量约束条件下,以最小化干扰为目标为链路分配信道,解决无干扰信道分配引起的服务用户数受限的问题.仿真结果表明,W-LMCM算法能有效提升多播吞吐量及网络服务能力.
Wireless broadcast advantage-based load-aware multi-channel multicast（ W-LMCM） algorithm is proposed to solve the multicast routing and channel assignment problem with the goal of maximizing the number of served subscribers. W-LMCM regards links originating from the same node as a whole to fully exploit wireless broadcast advantage and save bandwidth; It uses maximal number channel selection strategy to avoid the adverse effect brought by random channel selection; While satisfying the channel capacity constraint within interference range,W-LMCM assigns channels for links with the goal of minimizing network interference,thus the problem that the number of subscribers served by interference-free channel assignment is limited can be solved. Network simulator simulation results show that W-LMCM can improve multicast throughput and network service capability efficiently.
作者
王继红
石文孝
WANG Ji-hong SHI Wen-xiao(School of Information Engineering, Northeast Electric Power University, Jilin 132012, China College of Communication Engineering, Jilin University, Changchun 130012, China)
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2017年第4期80-85,共6页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(61373124)
关键词
负载感知
多播
无线广播优势
信道分配
load-aware
multicast
wireless broadcast advantage
channel assignment
