An overload control method and device in media gateway

Abstract

The related overloading control method for media gateway comprises: a calling pass-rate calculation module in the gateway calculates the allowable calling ratio according to current process capacity, a calling pass-rate adjust module accordingly adjusts the pass-rate for next time and controls the gateway loading. This invention dynamic adjusts the calling pass-rate to improve the calling pass rate and the system stability.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to an overload control method and device in a media gateway. Background technique [0002] Overload control is based on system capacity and performance analysis. In order to ensure the stable operation of the system, the correct overload control algorithm must be adopted. When the system capacity reaches a saturated state, the acceptance of new calls is restricted to ensure the stable connection of existing calls; calls to improve call completion rate. During the overload control process of the system, the limit and increase of calls are dynamically changed and automatically adjusted according to the operating state of the system. [0003] In the NGN (Next Generation Network) networking mode shown in Figure 1, the lower-level switch directly connects to the user, and the TMG (trunk media gateway) is responsible for the establishment of the bearer. When the TMG receives the ...

AI Technical Summary

Problems solved by technology

[0007] 1) TMG only reports the overload time, and cannot perform overload processing by itself;

[0008] 2) Reject calls according to a fixed ratio method, which cannot be dynamically adjusted, and the fixed ratio of rejected calls is not easy to determine;

[0009] 3) Since the softswitch and TMG are networked through IP, the number of overload events received by the softswitch will be inaccurate due to packet loss in the IP network;

[0010] 4) When the TMG is overloaded, it needs to report the overload event package, which will aggravate the overload of the TMG and reduce the processing capacity of the TMG;

[0011] 5) TMG and softswitch are two independent network elements. If there is a problem with the overload handling of the softswitch, it will cause the TMG to crash, and there is a great hidden danger in the safety of the TMG.

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