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Downlink service data processing method, device and user terminal

A technology of business data and processing methods, applied in the field of data transmission, can solve the problem of large amount of calculation in decoding operations, and achieve the effect of reducing the amount of calculation

Active Publication Date: 2019-10-11
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, when the UE processes the data retransmitted by the base station, the calculation amount of the decoding operation is relatively large

Method used

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  • Downlink service data processing method, device and user terminal
  • Downlink service data processing method, device and user terminal
  • Downlink service data processing method, device and user terminal

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Embodiment Construction

[0044] At present, after receiving the service data retransmitted by the base station, the UE usually combines the retransmitted service data with the previously received service data, and performs a decoding operation on the combined data. Since the UE performs the decoding operation on the entire combined data when performing the decoding operation, the calculation amount of the UE when performing the decoding operation is relatively large.

[0045] In view of the above problems, an embodiment of the present invention provides a method for processing downlink service data. The method can perform the second check on the CB data in the service data when the first verification of the service data sent by the base station fails. Two checks, so that when the service data retransmitted by the base station is received, according to the result of the second check, the CB data that does not pass the second check can be selected for decoding without decoding the entire combined data. ...

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Abstract

The invention discloses a downlink service data processing method and device and user terminal. The method comprises the steps of receiving service data sent by a base station and carrying out a decoding operation on the service data, wherein the service data comprises TB (Transport Block) data composed of more than one piece of CB (Code Block) data; carrying out first checking on the decoded service data; sending a retransmission instruction to the base station when the first checking is unsuccessful and carrying out second checking on the CB data, thereby selecting the CB data which does not pass the second checking from the service data retransmitted by the base station, for the decoding operation. Through application of the method, the calculation quantity of carrying out the decoding operation by the UE can be effectively reduced.

Description

technical field [0001] The present invention relates to the technical field of data transmission, in particular to a downlink service data processing method, device and user terminal. Background technique [0002] In the LTE system, the base station sends service data to the user terminal UE in the form of a transport block (TB, Transport Block). Since the code block length of the TB is limited, before sending service data to the UE, the base station usually sends the data Do as follows: [0003] First, perform CRC processing on the data to be sent, that is, add a cyclic redundancy check code (Cyclic Redundancy Check, CRC) after the data to be sent to form TB data; then, code the TB data Block segmentation, that is, the TB data is divided into n sub-code blocks (Code Block, CB); then, CRC processing is performed on each of the CBs, that is, a CRC check code is added after each of the CBs to form - CB data; finally, these CB data are sequentially concatenated to form servic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 陈园
Owner SPREADTRUM COMM (SHANGHAI) CO LTD