Uplink control information signaling in inter-site downlink carrier aggregation scenarios

摘要

There are provided measures for uplink control information signaling in inter-site downlink carrier aggregation scenarios. Such measures exemplarily include obtaining uplink transmission resources for an uplink control information transmission on said primary carrier, deriving a receiving timing for said uplink control information transmission, detecting said uplink control information transmission on said primary carrier based on said uplink transmission resources and said receiving timing, and decoding uplink control information from said uplink control information transmission.

主权项

1. A method of a device providing primary cell functionality for communication in inter-site carrier aggregation mode aggregating a primary carrier and at least one secondary carrier, comprising
transmitting a downlink transmission, and using a time of said downlink transmission as a timing reference; receiving from a user equipment (UE) an uplink transmission comprising at least a time difference value; calculating a first receiving timing based on an estimated second receiving timing at said device, said time difference value and a predetermined timing advance value; and transmitting a first inter-site control transmission comprising at least a difference between said calculated first receiving timing and the timing reference; wherein:
said first receiving timing is for uplink signaling from the UE. to he received at another device providing secondary cell functionality; andthe estimated second receiving timing is for uplink signaling, from the UE to be received at the device providing primary cell functionality.