Method and apparatus for using uplink control information for inter-cell decoding and interference cancellation

摘要

Techniques for supporting data transmission on the uplink in a wireless network are described. In an aspect, a user equipment (UE) may send a data transmission to a serving base station and may send uplink control information (UCI) to a non-serving base station. The UCI may include pertinent information to allow the non-serving base station to process the data transmission from the UE. In one design, the UCI may allow the non-serving base station to estimate the interference due to the data transmission from the UE and to cancel the interference at the non-serving base station. The interference cancellation may improve the received signal quality at the non-serving base station. After the interference cancellation, the non-serving base station may process a data transmission from another UE served by the base station.

主权项

1. A method for wireless communication, comprising:
generating a data transmission at a user equipment (UE) for transmitting over uplink resources allocated by a serving base station to the UE; generating uplink control information (UCI) at the UE for a non-serving base station, wherein the UCI includes information for enabling the non-serving base station to cancel interference caused by the data transmission, wherein the information includes at least an indication of the uplink resources, and wherein the UCI includes a reverse rate indicator that indicates a rate selected by the UE; sending the UCI from the UE to the non-serving base station over UCI resources allocated between the UE and the non-serving base station; and sending the data transmission over the uplink resources.