Transmission of a CCFI or of PCFICH in a wireless communication system

摘要

A method of transmitting a control channel format indicator (CCFI), also known as PCFICH (Physical Control Format Indicator Channel), when the length of a coded CCFI is not an integer multiple of three, includes mapping a plurality of two-bit CCFI into a codebook with each component codeword having three bits; generating a sequence of codewords selected from the codebook by repeating the selected component codeword a predetermined number of times; generating a codeword by concatenating the sequence of the selected component codewords with the original CCFI bits; and transmitting the codeword carrying information of CCFI. The method further includes a step of generating a permutation of each of four codewords by assigning K repetitions of the three-bit component codeword to K resource units respectively and mapping remaining K bits of each of the four codewords separately to the K resource units.