Patent ID: 9054867
Filing Date: 2015-06-09
Classification: H04L,H04W

Abstract:
1. A method for assigning ACK channels to a user, which is used to feed back ACKs of N downlink sub-frames in one uplink sub-frame, the method comprising: dividing reserved ACK channels into N blocks, each downlink sub-frame of the N downlink sub-frames corresponding to one block in a preset sequence, wherein the preset sequence is a sequence that a special sub-frame is placed at a last position, or the preset sequence is a sequence that the sub-frame with the maximum actual value of n is placed at a foremost position; dividing each block into max{Mi} or Mi sub-blocks, the sub-blocks belonging to different blocks being interleaved and sub-blocks which are from the different blocks and mapped to a same control channel element, CCE, set of different sub-frames are arranged sequentially according to the preset sequence; and assigning the ACK channels to the downlink sub-frames by mapping CCE sets with labels of {0, 1, . . . , N wherein the N is a positive integer, the Mi represents a maximum possible value of n for a downlink sub-frame with a label of i among N downlink sub-frames, the i=0, 1, . . . , N−1, the max{Mi} represents a maximum value of Mi, the N CCE,max{Mi} represents the number of CCEs in the downlink sub-frame when n is equal to max{Mi}, the N CCE,Mi represents the number of CCEs in the downlink sub-frame when n is equal to Mi, the n is the number of symbols occupied by a physical downlink control channel, PDCCH.