A method and wireless communication system for processing group mobility

Abstract

The embodiment of the invention discloses a method for processing group movement. When a group moving controller (GMC) starts a group moving function, a fixed GMC paging group identification (PG-ID) is distributed for the GMC by the method for processing group movement; and then group information of the GMC is acquired by a target network in the process of information interaction switching from a service network to the target network by GMC. Furthermore, the group information of the GMC is used for upgrading a PG-ID list of the target network and the upgraded PG-ID list is used in the subsequent process of the interaction with nodes of the group. The embodiment of the invention further discloses a wireless communication system. The application of the wireless communication system can avoid a signaling storm caused by that in the group movement, location upgrading is simultaneously processed on substantial terminals with an IDLE mode, thus saving air interface resources and signaling expenses.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a technology for processing group movement. Background technique [0002] In a wireless communication system, the two most basic states of a mobile station (MS, Mobile Station) are active (active) mode and idle (IDLE) mode. [0003] In the active mode, the MS is allocated air interface resources and interacts with the network for data. When the location of the MS in active mode changes, for example, when the MS enters another cell from one cell, it is necessary to re-allocate air interface resources for the MS in the new cell, and migrate the original session or service flow of the MS to the new cell. In the cell, the MS is re-accessed to the new cell while avoiding interrupting the session as much as possible. The above process is called cell switching. [0004] The IDLE mode is an optional function defined in the Institute of Electrical and Electronics Engineers (IEEE) 802...

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Problems solved by technology

[0019] 1. When the MRS is connected to the new BS from the original BS, it has been disconnected from the original BS during the RNG process. Therefore, the original link is disconnected from the MRS until the MRS completes the PG-ID update process under the new BS. During this period of time, the paging of the MS in IDLE mode under the MRS will be delivered by the original BS, but this cannot be received by the MRS and the paged MS, resulting in the failure of the network to page during this period of time to the terminal in IDLE mode under the MRS

[0020] 2. If the message from BS to MS is integrity protected, MRS needs to block the DCD message before completing the PG-ID update process

Since the update process involves the interaction between the BS and other network elements in the backbone network, the time required cannot be ignored, so the MS may perceive the abnormality of the network, thereby triggering active location update and network re-entry behavior, which will Increase signaling overhead, resulting in waste of air interface resources

[0021] 3. This method requires adding the PG-ID of the MRS to all other BSs in the same paging group area as the new BS, which will increase the delay of the PG-ID update process; and the IDLE mode terminals subordinate to the MRS During the paging process, the paging area will be sent to all BSs, which increases the network overhead and the occupation of air interface resources

[0022] From the above analysis, it can be seen that the existing group mobility solution wastes air interface resources, and cannot guarantee that the terminal can be paged at any time, and cannot well solve the problem caused by simultaneous location update of a large number of IDLE mode terminals in group mobility. signaling storm problem

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