Information detection method and device of downlink high-speed shared control channel

A technology for sharing control channels and control information, applied in the field of communication, can solve the problem of high false alarm probability and achieve the effect of reducing throughput loss

Active Publication Date: 2010-12-29
ZTE CORP
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  • Claims
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AI Technical Summary

Problems solved by technology

However, when the UEID sent by the user satisfies a specific relationship with the UEID of the current user, the probability of false alarm is high

Method used

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  • Information detection method and device of downlink high-speed shared control channel
  • Information detection method and device of downlink high-speed shared control channel
  • Information detection method and device of downlink high-speed shared control channel

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Embodiment Construction

[0026] The embodiment of the present invention uses the characteristics of the user mask of the HSSCCH channel part1 and the characteristics of the Viterbi decoder to detect the presence or absence of the user's HSSCCH channel, and realizes a detection method with low false alarm probability and low false alarm probability under any user UEID combination .

[0027] It specifically includes: performing de-rate matching on the front-end detection signal of the first part of the control information of each HSSCCH channel in the HSSCCH monitoring set, and obtaining the de-rate matching information corresponding to each front-end detection signal; de-masking each de-rate matching information Processing; carry out Viterbi decoding to each de-rate matching information processed by removing the user mask, obtain the Viterbi decoding 0 state accumulation metric of the HSSCCH channel corresponding to the front-end detection signal of each HSSCCH monitoring channel, and pass through the d...

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Abstract

The invention discloses an information detection method and a device of downlink high-speed shared control channels (HSSCCH), which can realize the detection of HSSCCH part1 of low false alarm probability and low false dismissal probability under any user UEID combination. The method comprises the following steps: rate de-matching is carried out on front-end detection signals of part1 of each HSSCCH channel in a terminal HSSCCH monitoring set, thus obtaining corresponding rate de-matching information; user mask code removing is carried out on the rate de-matching information of each HSSCCH monitoring channel; Viterbi decoding is carried out on each rate de-matching information, the user mask code of which is removed, thus obtaining the Viterbi decoding 0 state cumulative measurement of each HSSCCH channel in the HSSCCH monitoring set, and the absolute values of soft information of each HSSCCH monitoring channel which is obtained after the user mask code is removed are summed respectively; according to the Viterbi decoding 0 state cumulative measurement of each HSSCCH channel and the corresponding sum of the absolute values of the soft information, the judgment variable of each HSSCCH channel is obtained; and the maximum is selected from the judgment variables of the HSSCCH channels, and the maximum is compared with a set threshold, and whether an HSSCCH channel of the user is detected or not is judged.

Description

technical field [0001] The invention relates to signal detection technology in the technical field of communication, and relates to a high-speed downlink shared control channel (HSSCCH) information detection method and device. Background technique [0002] High Speed ​​Downlink Packet Access (HSDPA) technology is a high-speed downlink packet access technology of wideband code division multiple access (WCDMA) and time division multiplexing code division multiple access (TD-SCDMA). Its main physical resources are shared channels shared among different users. The downlink includes high-speed downlink shared channel (HSDSCH) and high-speed downlink shared control channel (HSSCCH), providing support for high-speed downlink data services of different users. HS- The SCCH is a shared control channel of the HSDSCH, and is used to schedule the use of the HS-DSCH among different users. According to whether each user has data to send in the next HSDSCH transmission time interval (TTI),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04B17/00
CPCH04L1/201H04L1/0054H04L1/0067H03M13/653H04L1/0072H03M13/41H03M13/63H03M13/6362
Inventor 肖海勇
Owner ZTE CORP
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