Method and device for establishing route based on hybrid wireless netted network protocol

Abstract

The invention discloses a method for establishing a route based on a hybrid wireless netted network protocol. The method is applied to a node and comprises the steps of: receiving a route learning message, and generating route information according to the received route learning message; and if stored route information matched with the generated route information exists and link cost values of the two pieces of route information are equal, using an interface address for receiving the route learning message as a next-hop address, and adding the interface address to the stored route information, wherein the route learning message comprises a route request message and a route response message. According to the invention, route rules are changed, when the link cost values of a plurality of paths reaching the node are the same, a covering updating method is not needed, but the routes identical in link cost value on the plurality of paths are stored in a compatible manner, so that a wireless netted network can support equivalent routes. The invention further discloses a device for establishing the route based on the hybrid wireless netted network protocol.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for establishing a route based on a hybrid wireless mesh network protocol. Background technique [0002] The new wireless network technology——Wireless Mesh Network (WMN) is receiving more and more attention because of its unique advantages such as broadband wireless convergence connection function, effective routing and fault discovery characteristics, and no need for wired network resources. s concern. [0003] The HWMP protocol (Hybrid Wireless Mesh Protocol, hybrid wireless mesh network protocol) is a Mesh network routing protocol specified by the IEEE802.11s protocol family. This agreement defines the MAC layer protocol and the network and other protocols based on the MAC layer specifically for the WMN network. [0004] The basic working mechanism of the HWMP protocol is the on-demand routing mode, that is, a certain MP needs to forward tr...

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Problems solved by technology

In this way, only one route can exist in the equivalent route

[0007] b) When the link is broken and the next hop of the route is unreachable, in the existing protocol mechanism, the nodes at both ends of the broken link will reversely notify the previous hop node to delete the route until the two sources of the traffic. In the case of equal-cost routing, in fact, there are other routes between the two sources, but after the route is deleted, the route between the two sources can only be relearned. There is a lot of delay in this process, and the traffic is interrupted.

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