Patent ID: 8605810

Claim:
A method for determining a number of coded control information symbols in a spatial layer, in a communication system wherein a User Equipment (UE) is assigned by a base station transmission of a Physical Uplink Shared CHannel (PUSCH) from multiple transmitter antennas over a number of sub-carriers M sc PUSCH in a frequency domain and over a number of symbols in a time domain, the PUSCH being transmitted over multiple spatial layers and including two Codewords (CWs), CW 0 and CW 1 , each conveying a corresponding Transport Block (TB) of data information, TB 0 and TB 1 , with each TB being associated with a respective Hybrid Automatic Repeat reQuest (HARQ) process, and with CW 0 having a first Modulation and Coding Scheme (MCS), MCS 0 , and CW 1 having a second MCS, MCS 1 , and wherein the UE multiplexes control information of O bits with data information in all spatial layers, the method comprising the steps of: computing by the UE, an average MCS from the first MCS MCS 0 and the second MCS MCS 1 for initial PUSCH transmissions of the TB 0 and the TB 1 for the respective HARQ processes; and determining by the UE, the number of coded control information symbols Q′ in each spatial layer to be proportional to a product of a number of the control information bits O and a parameter β offset PUSCH and to be inversely proportional to the average MCS, wherein the parameter β offset PUSCH is assigned to the UE by the base station using radio resource control signaling.