Wide-band CDMA up stream scrambling-code distribution method

Abstract

The method includes following steps: for user equipment (UE) of local radio network controller (RNC), generating random up going scrambling code, and determining whether it is repeated between generated scrambling code and scrambling code recorded at local RNC; if yes, then regenerating random scrambling code; if no, distributing and recording the generated scrambling code; for UE of non local RNC, determining whether up going scrambling code of UE is repeated from recorded a up going scrambling code of local RUC; if yes, then switching is failure, and flow is ended; if no, then switching is allowed, and up going scrambling code from the switching is recorded. The disclosed method reduces switching failure caused by conflict of up going scrambling codes, and prevents possibility of repetition between new assigning up going scrambling code and already assigned up going scrambling code.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a wideband code division multiple access (WCDMA) uplink scrambling code allocation method. Background technique [0002] The code division multiple access (CDMA) system has become the development direction of the third generation mobile communication due to its advantages of high capacity, high service quality and good confidentiality, and the wideband code division multiple access (WCDMA) is the third generation mobile communication system solution One of the mainstream standards, and WCDMA is based on CDMA technology. The Terrestrial Radio Access Network (UTRAN) is an important part of the WCDMA system, and the Radio Network Controller (RNC) is used to control the radio resources of the UTRAN. The RNC mainly completes functions such as connection establishment and disconnection, handover, macro-diversity combination, and radio resource management control. The uplink scramb...

AI Technical Summary

Problems solved by technology

[0016] Since the uplink scrambling code allocation method in the prior art adopts the sequential allocation method, the generated uplink scrambling code is a fixed sequence, so the uplink scrambling codes allocated by different RNCs in the same operating environment are basically the same, so if When the UE is switched across RNCs, it is very easy to fail due to the repetition of the uplink scrambling code

[0017] At the same time, the prior art only considers judging whether the uplink scrambling code of the UE with the handover request is the same as the existing uplink scrambling code of the RNC, but does not consider whether the uplink scrambling code to be allocated by the RNC will be the same as that of the RNC after the handover is completed. The uplink scrambling code brought in by the UE handed over from other RNCs is repeated, so it is very easy to repeatedly allocate the uplink scrambling code

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