Scheduling and rate control coordination accounting for interference cancellation at a mobile terminal

摘要

Devices and methods for scheduling and interference cancellation that consider the interference cancellation capability of user equipment (UEs) are disclosed. Using reduced-rate sub-frame (or resource block) strategies, the transmission data rate to a scheduled user in a given cell may be reduced to ensure effective interference cancellation performance at the receiver of a co-scheduled user in another cell. By taking advantage of interference mitigation at one or more terminals, a scheduler may improve network spectral efficiency compared to existing inter-cell interference cancellation schemes, including almost blank sub-frame (ABS), further enhanced inter-cell interference coordination (FeICIC), and other resource partitioning schemes, such as reduced power sub-frames or frequency domain resource partitioning.

主权项

1. A method for cancelling interference from data transmissions within a communication network between user equipment (UE) and network nodes, comprising:
receiving, at a scheduling coordinator, reception quality indicators from a plurality of UEs indicating, for each UE, representative link quality between each of the UEs and one of a first network node and a second network node; selecting a first scheduled UE from the plurality of UEs to receive data from the first network node during a first period of time and a second scheduled UE to receive data from the second network node during at least a portion of the first period of time; determining a first data rate for transmitting a first signal from the first network node to the first scheduled UE; and determining a second data rate for transmitting a second signal rom the second network node to the second scheduled UE, wherein one or more of the selecting of the first and second scheduled UEs and the determining of the first and second data rates is based on the received reception quality indicators for the first and second scheduled UEs to enable the second scheduled UE to cancel from the second signal interference caused by the first signal.