北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2015, Vol. 38 ›› Issue (3): 103-107.doi: 10.13190/j.jbupt.2015.03.017

• 论文 • 上一篇    下一篇

Ad-Hoc中一种多对多通信的传输群调度机制

葛卫民, 王齐飞, 杨康, 刘扬   

  1. 天津大学 计算机科学与技术学院, 天津 300072
  • 收稿日期:2014-08-12 出版日期:2015-06-28 发布日期:2015-07-03
  • 作者简介:葛卫民(1964—), 男, 副教授, E-mail: gewm@tju.edu.cn.

A New Transmission-Group Scheduling Mechanism for Multi-Source and Multi-Destination in Ad-Hoc Networks

GE Wei-min, WANG Qi-fei, YANG Kang, LIU Yang   

  1. School of Computer Science and Technology, Tianjin University, Tianjin 300072, China
  • Received:2014-08-12 Online:2015-06-28 Published:2015-07-03

摘要:

为解决Ad-Hoc多源端和多目的端场景下已有的传输群调度机制通信冲突严重的问题,分析了Ad-Hoc网络中多对多场景下传输群中不同传输区域发生事件F和事件F'k(k=2,3,4)的概率,在基于两跳的f-cast中继算法的基础上设计了一种适用于多对多场景下的传输群调度机制,该传输机制根据上述两种事件发生的概率来调整相应区域内小区成为可通信小区的概率. 理论分析和仿真结果表明,提出的传输群通信调度机制在多对多通信场景下可以有效地减少通信冲突发生的概率,提高网络通信能力.

关键词: 无线自组织网络, 多源端对多目的端, 传输群通信调度机制, 通信冲突

Abstract:

Communication conflicts caused by the existing transmission group scheduling mechanism result in reducing network capacity and increasing delay under the multi-source and multi-destination scenario in Ad-Hoc network. To solve the problem, the probability of two events named F and F'k(k=2,3,4) was analyzed. And then, a new transmission-group scheduling mechanism was proposed based on two-hop relay algorithm with f-cast to suit for the multi-source and multi-destination scenario. The proposed transmission mechanism adjusts the probability of turning the internal cell in the transmission-group into the communication cell by means of the probability of two kind of events mentioned above. Analysis and simulation show that the transmission group communication scheduling mechanism proposed can effectively reduce the probability of communication conflict under multi-source and multi-destinations, and is beneficial to improve the network capacity.

Key words: Ad-Hoc, multi-source to multi-destination, transmission-group scheduling mechanism, communication conflict

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