Patent ID: 8830939

Claim:
A method comprising: composing uplink feedback signaling for individual ones of a plurality of received downlink carriers associated with a subframe duration, each carrier having an associated carrier index, where the uplink feedback signaling is composed in accordance with a mapping configured to distribute the uplink feedback signaling over a plurality of consecutive uplink subframes associated with a different subframe duration, based at least in part on the associated carrier indices; and transmitting the uplink feedback signaling on the plurality of consecutive uplink subframes using the different subframe duration, where the mapping is further configured to distribute: a precoding control indicator for a first downlink carrier associated with the subframe duration to a first subframe 0 of the plurality of consecutive uplink subframes associated with the different subframe duration, a precoding control indicator for a second downlink carrier associated with the subframe duration is assigned to a next occurring second subframe 0 of the plurality of consecutive uplink subframes, a precoding control indicator for a third downlink carrier associated with the subframe duration to a first subframe 1 of the plurality of consecutive uplink subframes following the first subframe 0 , and a precoding control indicator for a fourth downlink carrier associated with the subframe duration to a second subframe 1 of the plurality of consecutive uplink subframes following the second subframe 0 .