Interference measurement resource (IMR) signaling and use to support interference coordination between cells

摘要

Indication(s) of a configuration of first interference measurement resources in first subframe(s) and of a configuration of second interference measurement resources in second subframe(s) are received at a first BS and from a second BS using an interface between the first and second BSs. The first BS transmits zero or low power REs that coincide with the REs belonging to the first interference measurement resources in the first subframe(s). The first BS transmits full power REs that coincide with the REs belonging to the second interference measurement resources in the second subframe(s). The first interference measurement resources in the first subframe(s) are to be used by a UE (e.g., attached to the second base station) to measure interference for zero or low power REs and the second interference measurement resources in the second subframe(s) are to be used by the UE to measure interference for full power REs.

主权项

1. A method comprising:
receiving, at a user equipment from a network element, one or more indications of a configuration of first interference measurement resources in one or more first subframes to be used by the user equipment to measure interference for zero or low power resource elements, and of a configuration of second interference measurement resources in one or more second subframes to be used by the user equipment to measure interference for full power resource elements, wherein the one or more indications comprise an indication that periodicity resource elements are to be repeated, an indication of subframe offset over multiple subframes, and one or more indications of resource element locations within a subframe; measuring one or more zero or low power resource elements that coincide with the resource elements belonging to the first interference measurement resources in the one or more first subframes, even though one or more of the one or more first subframes are not configured as almost blank subframes; measuring one or more full resource elements that coincide with the resource elements belonging to the second interference measurement resources in the one or more second subframes, even though one or more of the one or more second subframes are configured as almost blank subframes; and reporting, to the network element, channel conditions at the user equipment based on the measured one or more zero or low power resource elements and the measured one or more full power resource elements.