Patent ID: 8219870
Filing Date: 2012-07-10
Classification: H03M,H04L

Abstract:
1. A method for bit collection in a Hybrid Automatic Repetition reQuest (HARQ), comprising the following steps of: (a) determining a number of rows N wherein, BitPerSymbol is a number of bits of each symbol, ModulationOrder is an order of modulation, and the order is 4 when the modulation is Quadrature Phase Shift Keying modulation; the order is 16 when the modulation is 16 Quadrature Amplitude Modulation; the order is 256 when the modulation is 256 Quadrature Amplitude Modulation; the order is 1024 when the modulation is 1024 Quadrature Amplitude Modulation; and the order is 4096 when the modulation is 4096 Quadrature Amplitude Modulation; the number of columns in the interleaver is: wherein N wherein ChipRate is a chip rate of WCDMA FDD system; SF is a spread factor of a HSDPA; TTI is a transmission time interval of HSDPA; Codes is a number of codes allocated to HSDPA user, in a range of 1˜15; (b) determining a temporary number of rows N (c) writing system bits column by column into the interleaver according to the obtained N (d) reading data from the rectangular interleaver in an order different from the writing order to complete the bit collection.