HS-SCCH channel coding device for high speed downlink packet access

Abstract

The encoding device for HS-SCCH channel makes the output data compact, reduces time delay, and raises circuit usage. The device includes first process circuit and second process circuit. The first process circuit includes the first convolutional coding unit (CCU), and first rate adaption unit (RAU). The first CCU encodes the input data; and RAU carries out rate matching or XOR process for the data, which are than outputted. Characters are that providing enable signal for the first process circuit to read next set of input data, the second process circuit includes following units: connected in sequence CRC16 circuit unit, second CCU, second RAU, counter monitoring unit, and time delay compensation unit located at one or several positions: in front of CRC16 circuit unit, between CRC16 circuit unit and second CCU, and between second CCU and second RAU.

Description

technical field [0001] The invention relates to a third generation (3G) mobile communication system, in particular to an HS-SCCH channel coding device for high-speed downlink packet access of a wideband code division multiple access system (WCDMA). Background technique [0002] Wideband CDMA (WCDMA) is one of the mainstream systems of the third generation mobile communication system. Among them, the HSDPA (High Speed ​​Downlink Packet Access, ie High Speed ​​Downlink Packet Access) technology proposed in the R5 version has become a current research hotspot. HSDPA technology is the most important technology to improve the high-speed downlink data transmission rate of WCDMA network. It is proposed by 3GPP in the R5 protocol in order to meet the asymmetrical requirements of uplink and downlink data services. It can be used without changing the existing WCDMA system network structure. On the basis of this, the user's downlink data service rate is greatly improved, which can rea...

AI Technical Summary

Problems solved by technology

[0009] 2. In order to ensure that the processing result of the previous UE data does not affect the processing of the second UE data, it is necessary to read the data of the next UE for processing after the processing and sending of the previous UE is completed, but the current HS -The SCCH channel coding device has the problem of timing interval between different UEs after combining the data sent last, that is, the T2 timing interval in Figure 4

[0010] The above two defects lead to the final output data is not compact, the total data output delay becomes larger, and the utilization rate of the circuit to realize this method is not high, which cannot meet the requirements in the case of high data processing delay requirements

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