A multi-gateway route selection method based on central management

Abstract

The invention discloses a method for selecting a multi-gateway router with central management. The method comprises the following steps: a call control server picks out the paths with the hop numbers which are less than or equal to a collocated hop number between a coming-in side gateway and a going-out side gateway according to the network topological collocation; the modification average transmission line stress degree of each path is respectively calculated according to a total resource collocation number and a occupied resource number; the path with the least modification average transmission line stress degree is selected from all the paths as the bearer path. The invention also discloses another method for selecting a multi-gateway router with central management. In the method, if the stress degree factors of each route of the shortest path are all less than a collocated load start threshold, the shortest path is selected as the bearer path for current call; otherwise, the path with the least modification average transmission line stress degree is the bearer path. The invention solves the problem of congestion caused by unfair distribution of resources among gateways. Thus, the whole network can operate steadily, fairly and controllably.

Description

technical field [0001] The invention relates to a routing selection method, in particular to a centrally managed multi-gateway routing selection method. Background technique [0002] Two, three or more gateways are registered to a call control server at the same time. This network model is called a multi-gateway model with central management. Because this network model is practical and economical, it is quickly applied. With the large-scale application of this model, more and more large areas will use the multi-gateway model to form a network, and the inter-office interconnection between call control servers will be used between large areas. After this kind of application reaches a certain level, there will be more and more gateways under the jurisdiction of the same call control server, and the load between these gateways will also increase, but the number of resources between multiple gateways is limited, so there are There may be some gateways that are more busy and some...

AI Technical Summary

Problems solved by technology

However, although this algorithm reflects the resource allocation or occupancy of the path to a certain extent, if one of the lines is already very tight, while other lines are relatively abundant, its average value may be relatively low and it will be selected. At this time, the route selection may fail because the line can no longer allocate resources.

[0006] It can be seen that the technologies and routing strategies currently used in practical applications are actually unfair, and they cannot better coordinate resource utilization and allocation among gateways in the multi-gateway model.

Images