CDMA (Code Division Multiple Access) soft switching method, base station and system

Abstract

The invention relates to a code division multiple access soft handover method, comprising: during network operation, setting load adjustment parameters in the system parameter message in the paging channel of the cell where the mobile station resides based on the load condition of the base station; The parameter adjusts the original base station switching threshold to obtain a new base station switching threshold; when the mobile station periodically monitors the system parameter message of the paging channel in the idle state, the base station sends the new base station switching threshold to the mobile station; The mobile station performs the corresponding handover operation according to the result of comparing the detected pilot frequency strength with the new base station handover threshold. The invention also relates to a code division multiple access base station and a soft switching system. The present invention introduces load adjustment parameters on the base station side. By setting different values ​​of load adjustment parameters, the fixed switching parameters can be adjusted according to the actual network load during the network operation process, so as to reasonably balance network traffic and improve call reception. pass rate.

Description

technical field [0001] The invention relates to the communication field, in particular to a soft handover method, base station and system in a code division multiple access system. Background technique [0002] At present, in the CDMA2000 1x system, the mobile station can use the absolute threshold method or the dynamic threshold method when performing soft handover in the talking state. [0003] When using the absolute threshold switching method, the switching process is as follows (see figure 1 shown): [0004] a) When the mobile station detects that the strength of a certain pilot frequency exceeds the parameter T_ADD issued by the current serving base station, the mobile station will send a pilot strength measurement message (PilotStrength Measurement Message, PSMM for short) to the current serving base station, and send the pilot frequency included in the candidate set; [0005] b) After receiving the message, the current serving base station sends a handover instruc...

AI Technical Summary

Problems solved by technology

[0024] The two handover methods of CDMA2000 1x system soft handover cannot guide the traffic, and cannot dynamically adjust the handover parameters according to the actual network load during the network operation process, so as to reasonably balance the network traffic and improve the call completion rate

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