基于异构无线网络的多路径传输

Multipath Transmission Based on Heterogeneous Wireless Network

针对异构无线网络环境中,大容量业务传输质量不可靠、网络资源利用率低的问题,提出了一种基于异构无线自组织网络的多路径传输路由算法。该算法有效避免了单路通信方式下的传输链路拥塞、吞吐量低等问题,并结合大容量业务的特点,通过一定的法则合理表征网络环境信息,依据表征结果提出发端到终端的多路径策略,使得重要性不同的业务可选择相应链路质量的路径进行并行传输,避免了网络中的每个自组网节点独立寻找路由导致的源节点难以获得中间节点路由信息的现象。仿真结果表明,该算法可实现整个网络负载均衡,缓解网络链路拥塞,有效降低传输中的丢包率,降低传输时延。

Aiming at the problem of unreliable transmission of large capacity services and low utilization of network resources in heterogeneous wireless networks, this paper proposes a multi-path routing algorithm based on heterogeneous wireless ad hoc networks. The algorithm effectively avoids the congestion and low throughput of the transmission link under the single communication mode. Based on the characteristics of the large-capacity service, the algorithm can reasonably characterize the network environment information by certain rules and the end-to-end multipath Strategy so that services of different importance can be selected to be transmitted in parallel along the path of the corresponding link quality to avoid that it is difficult for the source node to obtain the routing information of the intermediate node caused by each node in the network independently finding the route. The simulation results show that the algorithm can achieve the entire network load balancing, alleviate the network link congestion, reduce the transmission packet loss rate and reduce the transmission delay.