A routing method and device

Abstract

The present invention provides a routing method and device. The method is applied to a heterogeneous wireless network, including: a node receives a Hello message and a topology control TC message; establishes a route according to the Hello message and the TC message, and the Hello message It carries the unique IP address of each neighbor node, and the specified bits on the IP address are used to indicate the adjacency relationship between this node and the corresponding neighbor node on all channels. The present invention can transmit routing messages on some channels to reduce the routing overhead of the whole network, and at the same time, low-rate channels can use precious bandwidth resources for business data transmission, improving the utilization rate and network throughput of low-rate channels.

Description

technical field [0001] The present invention relates to the communication field, in particular to a routing method and device in a heterogeneous wireless network. Background technique [0002] Wireless Mesh (mesh) network is a new type of broadband wireless network structure, which inherits the main characteristics of multi-hop and self-organization of Ad Hoc (self-organizing) network, and consists of Mesh (mesh network) backbone network and Mesh access network. The goal of building a Mesh network is to provide a high-capacity, high-speed, reliable and self-organizing distributed network. [0003] A wireless Mesh network can be regarded as a combination of a traditional WLAN (Wireless Local Area Network) network and an Ad Hoc network. It combines the characteristics of both, and at the same time has its own characteristics. Its main features are as follows: [0004] 1) Mesh routers in wireless mesh networks are usually static or slowly moving, and terminal nodes are usual...

AI Technical Summary

Problems solved by technology

[0013] 1) Poor adaptability to heterogeneous networks

[0014] The size of the control message sent by the multi-interface OLSR protocol on each interface is the same as the sending time interval, and all interfaces are treated equally, without considering the bandwidth difference between different channels

[0015] 2) IP addresses occupy more

The practice of assigning multiple IP addresses to each node is a great waste of limited IP address resources, creating obstacles for large-scale networking

[0017] 3) Does not support channel selection

The minimum number of hops does not consider the impact of packet loss rate and channel bandwidth on route selection, and the optimal route cannot be selected, resulting in a decrease in network performance

Images