UPLINK CONTROL INFORMATION (UCI) MAPPING INDICATOR FOR LONG TERM EVOLUTION CARRIER AGGREGATION Russian patent published in 2015 - IPC H04W72/04 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to transmitting control information in wireless communication systems. A system (30) and method to instruct user equipment UE (32) how uplink control information UCI on a physical uplink shared channel PUSCH should be transmitted with carrier aggregation. Semi-static signalling of a UCI mapping bit via a radio resource control RRC parameter is used by a base station such as an eNodeB (36) to require the UE to transmit UCI using one of two pre-determined UCI transmission modes. The bit can be decided by the base station, considering, for example, the available bandwidth or quality of different uplink component carriers UL CC associated with the UE. This network-based solution allows the network to either configure a general rule of UCI transmission by the UE or to enforce the UCI transmission on the uplink primary cell UL Pcell.

EFFECT: system enables to transmit uplink control information when there is carrier aggregation.

34 cl, 6 dwg