Patent ID: 7962091
Filing Date: 2011-06-14
Classification: H04B,H04W

Abstract:
1. A communications transmit node configured to communicate with a plurality of multiple-input multiple-output (MIMO) target nodes and one or more relay nodes using a hybrid scheduling scheme, wherein one or more of the plurality of target nodes are classified in a first group to be served cooperatively using centralized scheduling and one or more of the plurality of target nodes are classified in a second group to be served non-cooperatively using distributed scheduling, wherein the first group of target nodes are served using cooperative fractional frequency reuse (FFR) with a frequency reuse factor greater than one and the second group of target nodes are served with a frequency reuse factor of one, the communications transmit node comprising a scheduler to schedule time-frequency resources to the first group of target nodes and wherein the communications transmit node is configured to notify the one or more relay nodes to perform distributed scheduling for the second group of target nodes using time-frequency resources not assigned to the first group of target nodes and further comprising a medium access controller configured to randomize a plurality of transmissions from the communications transmit node to the first group of target nodes for co-channel interference avoidance of one or more other communication transmit nodes and relay nodes, based at least on an interference beyond a given channel threshold.