Patent ID: 9112662
Filing Date: 2015-08-18
Classification: H04L,H04W

Abstract:
1. A method of operating a User Equipment (UE) to transmit a Hybrid Automatic Repeat reQuest Acknowledgment (HARQ-ACK) signal in a Physical Uplink Control CHannel (PUCCH), the method comprising: detecting each Physical Downlink Control CHannel (PDCCH) of one or more PDCCHs of a first type transmitted from a base station over respective one or more Transmission Time Interval (TTIs) within a total number of M TTIs and within a set j of Physical Resource Block (PRB) pairs, wherein a PRB pair includes a number of sub-carriers over a TTI, and wherein each PDCCH is detected over a respective number of Control Channel Elements (CCEs) and conveys a Downlink Control Information (DCI) format that includes a HARQ-ACK Resource Offset (HRO) information field having Q binary elements; determining a PUCCH resource n wherein n CCE,m,j is an index for a first CCE of the PDCCH in TTI m, ƒ(HRO) is a mapping function for the HRO information field having an even number of integer outputs, N CCE,i,j is a total number of CCEs in TTI i, and N PUCCH,j is informed to the UE from the base station by higher layer signaling, and wherein for m=0 all ƒ(HRO) values are small integers and for m>0 a first even number of ƒ(HRO) values are same as for m=0 and do not depend on a value of m and a remaining second even number of ƒ(HRO) values are larger negative integers that depend on the value of m and include a term that is a sum of one or more −N CCE,i,j values where 0≦i≦m−1; and transmitting the HARQ-ACK signal in the determined PUCCH resource.