LOW-POWER ALMOST BLANK SUBFRAME (ABS) IN HETEROGENEOUS NETWORKS

摘要

An aggressor access node in a heterogeneous network sends to a victim access node a pattern of transmit power for designated low-interference subframes (e.g., LP-ABSs). Utilizing feedback information collected from the victim node which quantizes interference seen by user equipments (UEs) which are allocated at least some of those subframes, the aggressor node selects whether and how much to adjust transmit power for subsequent such subframes, then sends to the victim node a pattern of the adjusted transmit power for those subsequent subframes (e.g., an enhancement to relative narrowband transmit power RNTP). The victim node sends to UEs the pattern of transmit power and respective resource allocations in those designated low-interference subframes; then derives interference level per UE in those subframes based on channel quality indications received from the respective UEs; and sends to the aggressor access node feedback information which quantizes the derived interference levels.

主权项

1. A method for controlling an aggressor access node in a heterogeneous network, the method comprising:
sending to a victim access node a pattern of transmit power for designated low-interference subframes; utilizing feedback information, collected from the victim access node and which quantizes interference seen by user equipments which are allocated at least some of the designed low-interference subframes, to select whether and how much to adjust transmit power for subsequent designated low-interference subframes; and sending to the victim access node a pattern of the adjusted transmit power for the subsequent designated low-interference subframes.