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Method and device for detecting HS-SCCH

A technology for HS-SCCH and coded data, applied in the field of high-speed downlink packet access, which can solve the problems of reduced efficiency of Viterbi decoder and high design complexity of shared control module

Inactive Publication Date: 2009-01-21
HUAWEI TECH CO LTD
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Problems solved by technology

[0019] In this way, HS-SCCH detection and decoding and other downlink channel decoding share a set of Viterbi decoders. Although a Viterbi decoder resource can be saved, because the real-time requirements of HS-SCCH detection are very high, Requires absolute priority and essentially zero latency for the Viterbi decoder
Therefore, the design complexity of the shared control module is very high, and HS-SCCH detection often interrupts the decoding of other channels, which will greatly reduce the efficiency of the Viterbi decoder
[0020] It can be seen that the two methods of detecting the HS-SCCH channel in the prior art cannot reduce the resource consumption of the Viterbi decoder while ensuring real-time performance

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  • Method and device for detecting HS-SCCH

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[0115] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0116] The detection method and device for HS-SCCH provided by the present invention utilize the characteristic that the data of the first time slot of HS-SCCH has only 8 bits before coding, that is, there are only 256 possible characteristics before coding, and according to the protocol for HS-SCCH The coding method of the data of the first time slot is to obtain 256 kinds of possible coded data, and use the ergodic correlation algorithm to detect the HS-SCCH.

[0117] First, introduce the coding method of the HS-SCCH channel in the protocol.

[0118] see image 3 , image 3 It is a block diagram of the encoding process of the HS-SCCH channel in the protocol. It consists of the following steps:

[0119] Step 301, perform channel convolution coding ...

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Abstract

The present invention discloses HS-SCCH channel detection method. It contains A, receiving HS-SCCH channel first time slot demodulation data; B, traversing all possible data before encoding, according to HS-SCCH channel encoding method to calculate out each data corresponded coded data before encoding, to make correlation operation to calculated all coded data with step A received demodulation data; C, according to correlation operation result judging in said coded data whether having with said demodulation data correlative coded data, if having then detection successful, otherwise detection unsuccessful. The present invention also discloses a realizing above-mentioned detection method HS-SCCH detection device. The present invention does need Viterbi translator to make detection.

Description

technical field [0001] The invention relates to high-speed downlink packet access technology (HSDPA) in mobile data communication, in particular to a detection method and device for high-speed-shared control channel (HS-SCCH) in HSDPA. Background technique [0002] In 3GPP, in order to meet the rapidly growing demand for high-speed mobile data services, another enhanced technology-HSDPA is launched on the basis of UMTS. HSDPA has the characteristics of high speed, and the highest rate can reach about 14Mbps, so it has been promoted and applied very quickly. [0003] HSDPA downlink includes 2 channels: HS-SCCH and high-speed-physical downlink shared channel (HS-PDSCH). The HS-PDSCH carries downlink service data, and the HS-SCCH carries signaling related to the HS-PDSCH. The user terminal guides the demodulation and decoding of the HS-PDSCH channel according to the decoding result of the HS-SCCH. Specifically, the HS-SCCH channel contains two parts: the first part is sent i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/34H04B17/00H04W24/00H04B17/30H04L1/00
Inventor 张家佶
Owner HUAWEI TECH CO LTD
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