Patent ID: 8121096
Filing Date: 2012-02-21
Classification: H04L

Abstract:
1. A method of performing circular buffer rate matching in a communication system, the method comprising: selecting a first bitstream for a first transmission of an information bitstream from a bitstream, the bitstream being channel-coded, interleaved in units of sub-blocks, and stored in a circular buffer, the first bitstream including Nc sequential bits starting from a bit of the bitstream stored in the circular buffer; and selecting a second bitstream for retransmission of the information bitstream, the second bitstream including Nc bits, wherein a first part of the second bitstream includes bits from a last bit of bitstreams selected at previous transmission including the first transmission to a last bit of the bitstream stored in the circular buffer, and a second part of the second bitstream includes bits punctured from the bitstreams selected at the previous transmission, wherein the second part of the second bitstream includes bits uniformly punctured from a bitstream including bits that start from the first bit stored in the circular buffer and have equal size to that of the sub-block, among bits included in the bitstreams selected at the previous transmission.