无线网状网与协作中继技术

Wireless Mesh Networks and Cooperative Relaying Technologies

无线网状网已经成为无线宽带通信领域的研究热点,但是基于交换技术的无线网状网因为其将整个网络看作是一个IP子网而无法适用于大范围的覆盖。在无线链路中采用协作中继,可以提高无线链路的传输速率及传输可靠性。同时采用基于网络层路由技术的无线网状网技术,可以实现整个无线网状网的频谱效率提升和广域覆盖。不过,由于标准化、关键技术研究以及产业化推进方面还存在许多问题,使得协作中继技术在无线网状网中的应用面临着巨大挑战。

Wireless Mesh networks have become a focus in research of wireless broadband communications. In a switching technologies-based wireless Mesh network the entire network is regarded as an IP subnet, so it cannot be applied in situations where large coverage is required. The use of cooperative relaying technologies can improve the transmission rate and reliability of wireless link; while the wireless Mesh network, once integrated with cooperative relaying technologies and routing technologies, can improve its spectrum efficiency and cover a wide area. However, there are many problems to be solved with respect to standardization, key technologies research and industrialization. Therefore, the application of cooperative relaying technologies in wireless Mesh networks is still a great challenge.