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Method for realizing blind transport format detection on downlink RLC layer of wireless communication system

A wireless communication system and transmission format technology, applied in transmission systems, digital transmission systems, baseband system components, etc., can solve problems affecting the quality of downlink communication, and achieve stable and reliable performance, improved quality, and efficient and fast processing. Effect

Active Publication Date: 2010-09-22
SPREADTRUM COMM (SHANGHAI) CO LTD
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AI Technical Summary

Problems solved by technology

[0007] It can be seen that blind transmission format detection is extremely important for the receiving end. If the sending end configures blind transmission format detection for the transmission channel, then the receiving end must perform blind transmission format detection, and combine the transmission formats that need to be used. (TFC) is detected from the transmission format combination set (TFCS) configured by the upper layer, and the data that needs to be correctly submitted to the upper layer is submitted to the upper layer, and the data that should not be submitted to the upper layer is deleted. If the blind detection cannot be performed correctly, It may bring many serious problems and seriously affect the quality of downlink communication

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  • Method for realizing blind transport format detection on downlink RLC layer of wireless communication system
  • Method for realizing blind transport format detection on downlink RLC layer of wireless communication system
  • Method for realizing blind transport format detection on downlink RLC layer of wireless communication system

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Embodiment 1

[0196]

[0197] The present embodiment is described as follows:

[0198] 1. The conditions given in this embodiment

[0199] (1) The upper layer is configured with two transmission channels, which are:

[0200] The transmission channel 2 (TrCH2) has crc, and there are three TF combinations, namely TF0 (0x148), TF1 (3x148), TF2 (4x148), and TF1 is the TF format selected for the transmission channel

[0201] ●Transmission channel 3 (TrCH3) does not have crc, and there are three TF combinations, namely TF0 (0x148), TF1 (2x148), TF2 (3x148), since there is no transmission channel with crc that needs to be detected, so It is not possible to determine which TF format to use, and it is necessary to determine which TF format to use through a blind detection process

[0202] (2) Three TFC combinations are configured on the upper layer, namely:

[0203] ● TFC0(TF0(0x148), TF0(0x148));

[0204] ●TFC1(TF1(3x148),TF1(2x148));

[0205] ●TFC2(TF2(4x148),TF2(3x148));

[0206] (3) In ...

Embodiment 2

[0215]

[0216] The present embodiment is described as follows:

[0217] 1. The conditions given in this embodiment:

[0218] (1) The upper layer is configured with two transmission channels, which are:

[0219] ●Transmission channel 2 (TrCH2) does not have crc, and there are three TF combinations, namely TF0 (0x148), TF1 (3x148), TF2 (4x148), since there is no transmission channel with crc that needs to be detected, so It is not possible to determine which TF format to use, and it is necessary to determine which TF format to use through a blind detection process

[0220] ●Transmission channel 3 (TrCH3) has crc, and there are three TF combinations, namely TF0 (0x148), TF1 (2x148), TF2 (3x148), and TF1 is the TF format selected for the transmission channel, and TF2 is the selected transmission channel TF format

[0221] (2) Three TFC combinations are configured on the upper layer, namely:

[0222] ● TFC0(TF0(0x148), TF0(0x148));

[0223] ●TFC1(TF1(3x148),TF1(2x148));

...

Embodiment 3

[0234]

[0235] After blind detection, select TFC1: TF1: 3x148 TF1: 2x148 TF1: 2x148

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Abstract

The invention relates to a method for realizing the blind transport format detection on a downlink RLC (Radio Link Control) layer of a wireless communication system, which comprises the following steps: decoding data and placing the decoded data into an RLC layer data queue; initializing a relative data structure and parameters which are detected by adopting a blind transport format; judging whether a guide transmission channel and a current transmission channel have the same TTI (Transmission Time Interval) or not and a connection frame number is the same as the last time or not; processing the blind detection data; and conventionally processing radio link control data. By adopting the method for realizing blind transport format detection on the downlink RLC layer of the wireless communication system, data which are not allowed to be submitted to an upper layer of a system are deleted, the problem that the data which are not expected to be received by the upper layer of the system are mistakenly submitted to the upper layer can be solved and the decoded data in a physical layer can be screened at lower computation complexity, thereby greatly improving the quality of downlink communication; and in addition, the invention has high-efficiency and quick processing process, stable and reliable work performance, wider application and firmer foundation laid for a third generation ofcommunication technology.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to the technical field of baseband signal processing in third-generation mobile communication systems, and specifically refers to a method for realizing blind transmission format detection at the downlink transmission Radio Link Control (RLC) layer of a wireless communication system. Background technique [0002] In modern society, with the continuous development of the third-generation mobile communication technology, the baseband signal processing technology suitable for Wideband Code Division Multiple Access (WCDMA) system has become more and more mature, and there are several signaling formats in the physical layer of WCDMA , where the Transport Format Combination Indicator (TFCI) is one of the more important ones, it corresponds to the Transport Format Combination (TFC) indication from the upper layer, and these information bits are used by the receiver in...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04L1/00H04B1/707
Inventor 张波张小琴王和平王鑫
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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