Tal update method and device in mobile communication network based on mobile base station

Abstract

The invention discloses a Tracking Area List (TAL) update method and equipment under a mobile communication network and based on a mechanic operating type. The method includes the steps that a network side device receives signal strength information reported by an UE, wherein the signal strength information includes received signal strength of a current serving cell and received signal strength of neighbor cells; a tracking area (TA) corresponding to the serving cell is added to the TAL by the network side device and the corresponding TA of the neighbor cells with the received signal strength bigger than the difference value between reselection threshold value of the cells and comparison threshold value is added to the TAL; the TAL is sent to the UE by the network side device and stored by the UE. In the embodiment, since it can be avoided that the UE moves beyond the range of the TAL and then triggers location update request, the frequency of initiatively starting location update request of the UE can be reduced. Cost of random access and control signaling brought by sending the location update request can be reduced, and then resource occupation of random access and control signaling is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless mobile communication, in particular to a TAL updating method and equipment under a mobile communication network based on a mobile base station. Background technique [0002] The concept of TAL (Tracking Area List, Tracking Area List) is introduced in the mobility management of the LTE (Long Term Evolution, Long Term Evolution) system. The MME (Mobility Management Entity, mobility management entity) allocates a TAL to each UE (User Equipment, user equipment). A TAL usually includes multiple TAs (Tracking Area, tracking area), and a TA usually consists of multiple cells. When the UE moves within the cell contained in the TA in its TAL, it does not need to initiate a location update request. When the UE finds that the TAI (Tracking Area Identity) of the cell where it resides has changed and is not in the current TAL, it initiates a location update request to the MME, notifying the MME that...

AI Technical Summary

Problems solved by technology

Therefore, in the network environment of mobile base station equipment, the current TAL allocation method has the following problems: Since the mobile base station equipment is in mobile movement and the movement is irregular, multiple adjacent cells originally configured as the same TA Gradually dispersed geographically, thus losing the original meaning of TA used to reflect adjacent geographical locations

At this time, if the MME pages the UE according to the TAL, some cells that belong to TA_1 and TA_2 but are far away from the UE will also broadcast the paging message, thus causing unnecessary waste of paging resources

In addition, since some adjacent cells of the cell where the UE is currently located do not belong to TA_1 or TA_2 in the current TAL of the UE, when the UE moves to these cells, the location update process will be triggered, consuming random access and control signaling resources

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