Coordinating allocation of resources for use by small cells
First Claim
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1. A method of interference mitigation, comprising:
- receiving, by a controller in a network including small cells, information from the small cells, the information including a number of user equipments (UEs) in each of the small cells, and a data rate in each of the small cells; and
responsive to the received information including the number of UEs and the data rate in each of the small cells, coordinating, by the controller, allocation of resources for use by the small cells in communicating data with respective UEs, wherein the coordinating of the allocation of resources comprises dynamically adjusting assignments of almost blank subframes (ABS) to the small cells to reduce interference among the small cells.
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Abstract
A controller receives information relating to at least one of multiple small cells. Responsive to the received information, the controller coordinates allocation of resources for use by the small cells in communicating data with respective user equipments (UEs), where the coordinating of the allocation of resources reduces interference among the small cells.
38 Citations
25 Claims
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1. A method of interference mitigation, comprising:
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receiving, by a controller in a network including small cells, information from the small cells, the information including a number of user equipments (UEs) in each of the small cells, and a data rate in each of the small cells; and responsive to the received information including the number of UEs and the data rate in each of the small cells, coordinating, by the controller, allocation of resources for use by the small cells in communicating data with respective UEs, wherein the coordinating of the allocation of resources comprises dynamically adjusting assignments of almost blank subframes (ABS) to the small cells to reduce interference among the small cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 18, 19, 20, 21)
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15. A first wireless access network node for a first small cell, comprising:
at least one processor configured to; send assistance information to a controller; receive, from the controller, an allocation of resources for use by the first wireless access network node for communications of data with user equipments (UEs) served by the first wireless access network node, wherein the allocation is part of allocations of resources assigned by the controller to a plurality of small cells including the first small cell, wherein the allocations are for reducing interference among the small cells and are based on the assistance information; and borrow a resource from at least one neighboring small cell wireless access network node, the borrowing comprising; sending a resource borrow request from the first wireless access network node to the neighboring small cell wireless access network node; receiving a message including information indicating at least one resource for borrowing by the first wireless access network node, the at least one resource being a resource that is part of the allocation of resources assigned by the controller to the neighboring small cell wireless access network node; and causing use of the at least one resource by the first wireless access network node. - View Dependent Claims (16, 22, 23, 24)
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17. A controller comprising:
at least one processor configured to; receive information from a plurality of small cells; and responsive to the received information, coordinate allocation of resources for use by the small cells in communicating data with respective user equipments (UEs), wherein the coordinating of the allocation of resources reduces interference among the small cells; allocate orthogonal sets of resources to small cells that overlap by greater than a specified threshold; and allocate semi-orthogonal sets of resources to small cells that overlap by less than the specified threshold. - View Dependent Claims (25)
Specification