无线自组网广播通信方案综述

Survey of Broadcast Scheme in Wireless Ad Hoc Networks

无线自组网被广泛应用于灾害救援、军事行事、智能交通等重要领域。其诸多应用都具有群组性通信特征,因而对广播通信方案进行研究有重要理论意义与实用价值。文中根据广播通信方案的可靠性将现有方案分为绝对可靠的方案和提供某种概率可靠保证的方案,并简单阐述了其基本工作原理。使用NS2模拟器对典型方案进行仿真,就方案的可靠性、开销和端到端时延这三个重要指标进行了对比,分析各种方案的优缺点,归纳不同类型方案各自合适的应用场景,为广播通信方案的选择提供依据。

Wireless ad hoc networks are widely used in disaster relief, military operations, intelligent transportation and other important fields. It has important theoretical significance and practical value to study the broadcasting scheme for its many grouporiented applications. According to the reliability of broadcasting and communication schemes, the existing schemes are divided into deterministic schemes and probabilistic schemes, and their basic working principles are briefly described in the paper. The NS2 simulator is used to simulate the typical broadcast schemes, and experimental result of reliability, overhead and end-to-end delay are compared to analyze their own advantages and disadvantages. Finally, the suitable application scenarios are suggested for each type scheme to provide a basis for the choice of broadcast solutions.