Patent ID: 8594022

Claim:
A method for a User Equipment (UE) to encode acknowledgement information bits for transmission to a base station in a Time Division Duplex (TDD) communication system, the method comprising the steps of: generating the acknowledgement information bits for each of a plurality of Transmission Time Intervals (TTIs) and for each of a plurality of cells configured for the UE, wherein one acknowledgement information bit is generated for each cell configured with a Transmission Mode (TM) that conveys one data Transport Block (TB), and wherein two acknowledgement information bits are generated for each cell configured with a TM conveying two data TBs; arranging, in a first codeword, the acknowledgement information bits corresponding to the plurality of TTIs for each of the plurality of cells in an order of ascending cell index values; encoding the first codeword, when a total number of acknowledgement information bits is less than or equal to a predetermined value; and placing successive acknowledgement information bits from the first codeword into a second codeword and a third codeword, in an alternating manner, and encoding the second codeword and the third codeword, when the total number of acknowledgement information bits is greater than the predetermined value.