Method for keeping user on line during fault of IMA group of RNC equipment

Abstract

The invention provides a method for keeping a user on line during a fault of an inverse multiplexing for an asynchronous transfer mode (IMA) group of radio network controller (RNC) equipment. In the method, when the IMA group on which the transfer carrier of the user is positioned has the fault, the RNC releases the radio link and the transfer carrier of the user on a backup IMA group; a resourceentity on a network side is released, so that the user is asynchronous with the network side quickly and initiates a new cell updating process; in the cell updating process, the RNC reallocates radiolink resources to the user, establishes a new transfer carrier on the backup IMA group and informs the user to use new null allocation information; and at the moment, a service is recovered to be normal, and the user is kept on line all the time. In the method, when a principal IMA group has the fault or a single plate on which the principal IMA group is positioned has the fault, the transfer carrier of the user is reallocated in the backup IMA group by triggering the user to initiate the cell updating process, so that the releasing of a signaling plane to an on-line user is avoided, the usercannot be disconnected in the fault recovering process, and the service recovering delay is short.

Description

【Technical field】 [0001] The present invention relates to wireless network communication technology, in particular to a method for keeping users online when an RNC (Radio Network Controller, wireless network controller) equipment IMA (Inverse Multiplexing for ATM, ATM inverse multiplexing logical link) group fails . 【Background technique】 [0002] see figure 1 Shown is the Iub interface protocol stack structure. The Iub interface is an interface between RNC and Node B (base station), and is used to transmit signaling between RNC and Node B and data of a wireless interface. The Iub interface can be divided into the physical layer, the transport layer and the wireless network layer from the level; it can be divided into the wireless network control plane, the transmission network control plane and the user plane from the functional aspect. [0003] see figure 2 As shown, for the bottom layer of RNC and Node B, dual IMA group configuration is adopted. When the main IMA gro...

AI Technical Summary

Problems solved by technology

[0004] When the IMA group where the user's transmission bearer is located fails, the RNC will initiate the user release process, and the user will experience call drop, which affects user experience and system performance.

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