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1. (WO2017148096) METHOD AND DEVICE FOR GENERATING CYCLIC REDUNDANCY CHECK

Pub. No.:    WO/2017/148096    International Application No.:    PCT/CN2016/092716
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Tue Aug 02 01:59:59 CEST 2016
IPC: H04L 1/00
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
Inventors: LIU, Leishan
刘磊山
LIU, Mingqiang
刘明强
YANG, Minhua
杨敏华
Title: METHOD AND DEVICE FOR GENERATING CYCLIC REDUNDANCY CHECK
Abstract:
Disclosed are a method and device for generating a cyclic redundancy check (CRC). The method comprises: dividing each level of data in data information into M/N frames of data units, and grouping the M/N frames of data units into Q groups; calculating a first output result of each frame of data unit for each level of data according to a CRC input value and the validity of each frame of data unit; synchronously calculating a second output result of each frame of data unit in each group according to the validity of each frame of data unit; synchronously calculating third output results of all the data units in the next group of each group to the M/Nth frame of data unit according to the second output result of the last frame of data unit in each group and the validity of the last frame of data unit to the (M/N-1)th frame of data unit in the group; and performing an exclusive-OR calculation on the output result of each frame of data unit to obtain a CRC value of each frame of data unit, and defining the CRC output value of the last frame of data unit in the last level of data as the CRC value of the data information. The solution shortens the time for calculating a CRC value, improves the calculation frequency of the CRC value, and reduces resources and power consumption of a chip for calculating the CRC value.