Decoding method and device of combination and indication TFCI (transport format combination indicator) of transformat in TD-SCDMA (time division-synchronization code division multiple access)

Abstract

The invention provides a decoding method and device of combination and indication TFCI (transport format combination indicator) of a transformat in TD-SCDMA (time division-synchronization code division multiple access). The method comprises the steps of a receiving step: receiving wireless frames, wherein the wireless frames comprise odd sub frames and even sub frames; a calculating step: respectively calculating the signal to noise ratios of the odd sub frames and the even sub frames; an extracting step: respectively extracting the combination and indication TFCI of the transformats in the odd sub frames and the even sub frames; a judging step: judging whether the number of received wireless frames achieves the threshold value, if yes, executing a selecting step and if not returning to the receiving step; the selecting step: selecting the TFCI in the odd sub frames and the even sub frames according to the signal to noise ratios respectively; a combining step: splicing the TFCI in the odd sub frames and the even sub frames; a decoding step: decoding the wireless frames by adopting the spliced TFCI. The reliability and success rate of TFCI decoding are improved under the condition of deteriorated hollow port quality.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method for decoding TFCI of transmission format combination indication in TD-SCDMA, and a device for decoding TFCI of transmission format combination indication in TD-SCDMA. Background technique [0002] At present, in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access), UE (User Equipment, user equipment) sends UTRAN (Umts Terrestrial Radio Access Network , radio access network) to send uplink data or control information, when UE transmits DCH to UTRAN, DCH data is mapped to DPCH (Dedicated Physical Channel, Dedicated Physical Channel) through bit-level processing, and DPCH data is obtained after spreading and scrambling , the UE sends the DPCH data to the UTRAN through the antenna. When the UTRAN captures the DPCH data sent by the UE in the wireless environment, descrambles and despr...

AI Technical Summary

Problems solved by technology

[0003] Among them, when UTRAN performs reverse bit-level processing on DPCH data, it is first necessary to know the transmission format of DCH data sent by UE, and UTRAN uses TFCI (Transport Format Combination Indicator) carried in DPCH data sent by UE Obtain the DCH data transmission format sent by the UE. Since TFCI is the necessary information for reverse bit-level processing, once the TFCI is interpreted incorrectly, the DCH data sent by the UE will not be correctly interpreted

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