Method for preventing ping-pong switch and device with ping-pong switch filtering function

Abstract

The invention relates to a method for avoiding ping-pang switch, which comprises: based on the signal quality of present network of user terminal and target switch network, fixing the maximum allowed switch frequency; judging if allowing said switch, the real switch frequency is in the maximum value, if it is in said maximum value, allowing this switch; or else, rejecting said switch. The invention also discloses a device with ping-pang switch filter function whose network switch alarm module has ping-pang switch filter function. The invention can effectively reduce the ping-pang switch frequency generated at the edge of dual-network cover, and release the impact on the network processing ability when leading in the region transfer calling function.

Description

technical field [0001] The invention relates to a network switching technology of a wireless communication system, in particular to a method for preventing ping-pong switching and a device with a filtering function for ping-pong switching. Background technique [0002] In a traditional cellular mobile communication network, there are a group of radio cells adjacent to each other around the user terminal (UE). At the same time, a UE only communicates with one of the radio cells. When the movement of the UE causes the UE to cross two cells When the boundary between cells is reached, inter-cell handover will be triggered. The handover of the traditional cellular network is mainly implemented in the underlying access network. Usually, this handover is performed between two cells within the same radio network controller (RNC). The two cells involved may belong to different Base stations (Node Bs) may also belong to the same Node B. [0003] Within the same RNC, the triggering p...

AI Technical Summary

Problems solved by technology

[0046] If the UE is in the edge area covered by the UMTS network and the WLAN network, the quality of the UMTS signal and the WLAN signal received by the UE is relatively poor; moreover, since both the UMTS signal and the WLAN signal may experience a random fading process, the signal strength will appear random Fluctuates up and down. In this case, if the UE only triggers domain transfer based on the signal strength and signal quality of the network, it may cause the UE to frequently switch between the UMTS network and the WLAN network, that is, ping-pong switching

[0047] In addition, since the domain transfer between the UMTS network and the WLAN network is implemented on the core network plane, each handover action of the UE is equivalent to initiating a new call; from the perspective of the core network processing capability, it is an increase A new call shock

If within the coverage of the UMTS network, the frequency of domain transfer between the UMTS network and the WLAN network is equivalent to the frequency of handovers within the current cellular mobile communication system network, then, from the perspective of the entire network, the domains that need to be processed simultaneously The number of domain transfers will be astonishing, and the current level of engineering technology of the core network will not be able to handle such a large number of domain transfers at the same time

[0048] It can be seen from the above analysis that in the prior art, the UE only triggers domain transfer handover according to the signal strength and signal quality of the network, which will lead to high-frequency ping-pong handover of the UE in the edge area covered by the UMTS network and the WLAN network, so that the UMTS network and the WLAN network After the domain transfer function is introduced between networks, it will have a great impact on the network processing capacity

Images