Downlink interference coordination in a radio communication network

摘要

An aggressor base station (22-1) herein performs downlink interference coordination with one or more victim base stations (22-2, 22-3) in a radio communication network (10). Such coordination is performed for each of one or more iterations. For any given iteration, the aggressor (22-1) sends a message (28-2) to a victim (22-2) that indicates, for each of one or more downlink resources (26), whether the aggressor (22-1) promises to protect that resource (26) from interference by not transmitting on the resource (26) with a transmit power above a threshold (TH2). The victim (22-2) schedules downlink transmissions to one or more user equipments (16) on resources (26) that, according to the message (28-2), are protected from interference. Based on monitoring for interference to those transmissions, though, the victim (22-2) generates and sends to the aggressor (22-1) feedback (30-2) that generally requests an increase or decrease of the threshold (TH2). From evaluation of this feedback (30-2), the aggressor (22-1) determines a new threshold (TH2) on which promises are to be based in a message (28-2) to the victim (22-2) in a subsequent iteration.

主权项

1. A method implemented by an aggressor base station for downlink interference coordination with one or more victim base stations in a radio communication network, comprising, for each of one or more iterations:
sending a message to a victim base station that indicates, for each of one or more downlink resources, whether the aggressor base station promises to protect that resource from interference by not transmitting on the resource with a transmit power above a threshold; receiving feedback from the victim base station generally requesting an increase or decrease of the threshold; and determining, from an evaluation of the feedback, a new threshold on which promises are to be based in a message to the victim base station in a subsequent iteration.