Signaling data channel's configuration information to facilitate interference cancellation

摘要

In MU-MIMO scenarios, a target terminal can be exposed to data streams intended for other terminals. If the target terminal is capable of interference cancellation, then a network node, such as a base station or RNC, can provide the target terminal with interference information so that the target terminal can efficiently cancel interferences due to these interfering data streams. The interference information may include one or more interfering configuration, each of which characterizes a related interfering data stream. The interference information can also include the identity of the other terminal that is the intended recipient of the interfering stream. The network node may determine whether the target terminal can benefit from the interference information. If so, the network node can provide the interference information to the target terminal.

主权项

1. A method performed by a network node of a wireless network to provide communication services to a target terminal, the method comprising:
determining whether the target terminal is in a data state; determining whether the target terminal is interference cancellation (IC) capable; transmitting interference information to the target terminal when it is determined that the target terminal is in the data state and further that the target terminal is IC capable; and transmitting a plurality of data streams to one or more terminals in a cell being served by the network node, wherein for each data stream, the network node also transmits a corresponding configuration information that identifies air interface resources allocated to that data stream, wherein an interfering stream is a data stream intended for a terminal other than the target terminal, and an interfering configuration is the configuration information corresponding to the interfering stream, and wherein in the step of transmitting the interference information to the target terminal, the interfering configuration and/or an identity of the terminal other than the target terminal are transmitted as the interference information; wherein in the step transmitting the interference information to the target terminal, the interference information is broadcasted over a signal channel, the broadcast being packaged such that a plurality of terminals are able to read the interference information; wherein the signal channel is a shared control channel used by the network node to transmit the configuration information corresponding to the data streams, wherein in the step of transmitting the interference information to the target terminal, the interfering configuration is included in the interference information transmitted over the shared control channel, and wherein the interference information is generated according to a predetermined group ID, the group ID being understood by the plurality of terminals to indicate that the interference information includes the interfering configuration.