| 主权项 |
1. A method for a base station (NodeB) to transmit to a User Equipment (UE) one or more Physical Downlink Control CHannels (PDCCHs) in a first carrier of a plurality of carriers during a Transmission Time Interval (TTI) k, wherein each PDCCH comprises an aggregation of L consecutive Control Channel Elements (CCEs), is transmitted in at least one Physical Resource Block (PRB) from a set p of Np≧2 PRBs, and schedules to the UE one of a Physical Downlink Shared CHannel (PDSCH) reception or a Physical Uplink Shared CHannel (PUSCH) transmission in a second carrier of the plurality of carriers, where C denotes a number of carriers, the first carrier and the second carrier being one of a same carrier and different carriers, the method comprising:
allocating, to the UE, a unique carrier indicator (nCI) for each of the plurality of carriers, wherein nCI=0, 1, . . . , C−1; determining a location for a first CCE of a first PDCCH candidate for scheduling the one of the PDSCH reception or the PUSCH transmission in the second carrier with indicator nCI as L·(Yp,k+nCI), wherein Yp,k is an offset value that depends on the PRB set p and on the TTI k and is computed by the UE; and transmitting, to the UE, a PDCCH scheduling the one of the PDSCH reception or the PUSCH transmission in the second carrier, wherein locations of CCEs corresponding to a PDCCH candidate mnCI for one of the plurality of carriers with indicator nCI, mnCI=0, . . . , Mp,nCI(L)−1, are obtained based on:L·{(Yp,k+⌊mnCI·NCCE,p,kL·maxnCI(Mp,nCI(L))⌋+nCI)mod⌊NCCE,p,kL⌋}+iwhere NCCE,p,k is a number of CCEs in PRB set p and TTI k, i=0, . . . , L−1, and Mp,nCI(L) is a number of PDCCH candidates for a carrier with indicator nCI. |
