Patent ID: 8958330
Filing Date: 2015-02-17
Classification: H04L,H04W

Abstract:
1. A de-rate matching method for a downlink traffic channel in a Long Term Evolution (LTE), comprising: receiving a Transport Block (TB), which comprises a first branch of data, a second branch of data and valid data of a third branch of data that are Turbo coded at a system side, of a Physical Downlink Shared Channel (PDSCH), and dividing the received TB into a plurality of Code Blocks (CBs), and executing following operations: for a first CB of the TB: determining nulls required to be added to restore valid data in the first CB into a data length, which is the data length after a bit collection at the system side, and determining a position relationship between the nulls required to be added and the valid data in the first CB; restoring the valid data in the first CB into the data length, which is the data length after the bit collection at the system side, according to the valid data in the first CB and the position relationship between the nulls and the valid data; and de-interleaving the restored valid data in the first CB; for each non-first CB other than the first CB: determining valid data lengths of the first branch of data, the second branch of data and the third branch of data in each non-first CB after the system side divides the TB into the plurality of CBs, reading valid data in corresponding lengths from the non-first CB according to the valid data lengths of the three branches of data in each non-first CB, and de-puncturing, de-interleaving or de-repeating the read valid data.