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

Abstract

The invention relates to a CDMA (Code Division Multiple Access) soft switching method which comprises the steps of: setting a load adjustment parameter in a system parameter message in a paging channel of a cell where a mobile station resides based on a base station load condition in a network operation process; adjusting an originally set base station switching threshold based on the load adjustment parameter to obtain a new base station switching threshold; when the mobile station in an idle state monitors the system parameter message of the paging channel periodically, switching the new base station switching threshold to the mobile station by the base station; and performing corresponding switching operation by the mobile station according to a result obtained by comparing the detected pilot frequency intensity with the new base station switching threshold. The invention also relates to a CDMA base station and a soft switching system. According to the invention, a load adjustment parameter is introduced at the base station side, and a fixed switching parameter can be adjusted according to the practical network load condition in the network operation process by setting different values of the load adjustment parameters, so that network telephone traffic can be balanced reasonably and call completing rate is improved.

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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