Resource management and interference mitigation techniques for relay-based wireless netoworks
AssigneeIntel Corporation
InventorsOzgur Oyman, Qinghua Li, Nageen Himayat, Jaroslaw J. Sydir
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Abstract
Embodiments of a system and methods for resource management and interference mitigation techniques for relay-based networks are generally described herein. Other embodiments may be described and claimed.
Claims20
A communications transmit node configured to communicate with a plurality of multiple-input multiple-output (MIMO) target nodes and one or more relay nodes, wherein one or more of the plurality of target nodes are in a first group to be served cooperatively using centralized scheduling and one or more of the plurality of target nodes are in a second group to be served non-cooperatively using distributed scheduling, the first group of target nodes to be served using cooperative fractional frequency reuse (FFR) with a frequency reuse factor greater than one and the second group of target nodes to be served with a frequency reuse factor of one, the communications transmit node comprising a scheduler to schedule time-frequency resources for 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.
A method for mitigating interference in a wireless communications network, the method comprising:
- identifying a plurality of target nodes with a communications transmit node, the plurality of target nodes being associated with multi-hop paths from the communications transmit node to the plurality of target nodes;
- selecting a neighbor node of the communications transmit node to operate as a cooperator node, the cooperator node and the communications node configured to operate cooperatively to communicate at a first frequency with a first group of the plurality of target nodes;
- identifying a plurality of relay nodes using the communications transmit node, the relay nodes configured to communicate at a second frequency with a second group of the plurality of target nodes;
- determining resource allocation for the first group of the plurality of target nodes using the communications transmit node;
- notifying the number of the plurality of relay nodes, using the communications transmit node, to determine resource allocation for the second group of the plurality of target nodes.
A method, comprising:
- establishing a link with a mobile station using a base station;
- receiving a notification from the mobile station of interference to the link between the mobile station and the base station;
- receiving identification, from the mobile station, of interfering stations causing interference to the link between the mobile station and the base station;
- notifying other base stations of the identification of the interfering stations causing interference to the link between the mobile station and the base station;
- determining whether to randomize transmissions from the base station to the mobile station based on whether the interfering stations randomize transmissions to the mobile station.
Dependencies are inferred from the claim text.