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近几年,协同分集技术得到了广泛的关注。在无线Ad hoc网络中采用协同技术可以为网络带来分集增益,减轻信道衰落的影响。研究了无线Ad hoc网络在网络层采用协同技术的方法和形式——协同路由算法,通过节点在传输数据时主动寻找协同节点为其转发数据,可以有效地提高网络性能。对现有的几种协同路由算法和协同节点选择机制进行了详细的研究,分析了其各自技术优势及存在的问题。最后探讨了协同路由有待解决的问题及未来的研究发展方向。
In recent years, collaborative diversity technology has received widespread attention. Adopting collaborative technology in wireless Ad hoc networks can bring diversity gain to the network and reduce the impact of channel fading. The method and the form of collaborative routing in wireless Ad hoc networks are studied at the network layer. Collaborative routing algorithm can effectively improve the network performance by actively looking for cooperative nodes for forwarding data when nodes transmit data. Several existing collaborative routing algorithms and collaborative node selection mechanism are studied in detail, and their respective technical advantages and existing problems are analyzed. Finally, the problems to be solved and the direction of future research and development of collaborative routing are discussed.