Reactivation method, system and device for reverse multiplexing set of the asynchronous transfer mode

Abstract

The invention discloses an IMA group reactivating method, comprising the steps of: after switching is triggered, keeping the original IMA link activating state of opposite-end equipment in the detection threshold of the preset IMA link failure detection mechanism; after the link failure disappears, the IMA group of the local-end equipment transits to the activating state. And the invention also discloses an IMA group reactivating system and the device applied to the IMA reactivating system. And the invention can effectively reduce number of transitions of IMA state, shorten the time for IMA activation in the switching course, and reduce the switching effect on services.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method, system and device for reactivating an asynchronous transfer mode inverse multiplexing IMA group. Background technique [0002] In the service transmission of the third generation mobile communication system (3G), the reliability of transmission is an aspect that needs special attention. In order to ensure the normal transmission of user business data, when an unexpected failure occurs in the network or equipment, the transmission equipment needs to have a certain self-healing capability. When a serious failure occurs on the transmission line or access equipment, the signal can be switched to the backup equipment in time to minimize losses. [0003] For example, in the Iub interface between the Node B of the 3G base station and the RNC of the base station controller, a hot backup mode is usually adopted to ensure normal transmission of services. This backup method nee...

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Problems solved by technology

For example, when the physical layer is configured as SDH 1+1 protection switching, due to some reasons, the equipment adopts software-controlled switching, which causes the interruption time of the physical layer to be as long as 500ms, while the establishment time of the IMA layer is 1.5 to 5.5 seconds between, it is easy to cause upper-layer voice service interruption and call drop

[0017] In addition, the standby device configuration can be configured to receive enabled, because it can receive the negotiation data from the opposite end, so that the standby IMA link may have a different start state when the switchover occurs, so the time of each switchover cannot be guaranteed to be consistent

[0018] It can be seen that because IMA has a relatively complex group state machine and link state machine, if the physical layer is interrupted for a long time during the active-standby switchover process, it will take a long time for IMA to re-establish the connection, and it cannot be guaranteed During the active / standby switchover, the business is normally carried out, which leads to the interruption of the upper-layer voice service or the drop of the call

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