Methods and apparatus for inter-cell interference coordination self-organized network
First Claim
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1. A method of resource allocation for use in a wireless network, the method comprising:
- triggering, upon occurrence of a network event, a network coloring decision to assign a plurality of resource blocks to a plurality of cells within the wireless network; and
performing a network coloring by assigning each cell of the plurality of cells a resource block from the plurality of resource blocks, wherein an effect of interference among adjacent cells with a same resource block assignment is reduced as measured by a network performance metric related to a number of resource block assignment conflicts over the plurality of cells, wherein the network performance metric is in accordance with a network neighboring relation table (NRT) maintained for the network, and the network NRT comprises a matrix of size n*n elements, wherein n is a number of the plurality of cells,wherein an element Bij of the matrix is Bij=Aij+Aji,wherein
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Abstract
A method of resource allocation for use in a wireless network is disclosed. A network coloring decision to assign a plurality of resource blocks to a plurality of cells within the wireless network is triggered upon occurrence of a network event. A network coloring is performed by assigning each cell of the plurality of cells a resource block from the plurality of resource blocks. An effect of interference among adjacent cells with a same resource block assignment is reduced as measured by a network performance metric related to a number of resource block assignment conflicts over the plurality of cells.
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Citations
26 Claims
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1. A method of resource allocation for use in a wireless network, the method comprising:
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triggering, upon occurrence of a network event, a network coloring decision to assign a plurality of resource blocks to a plurality of cells within the wireless network; and performing a network coloring by assigning each cell of the plurality of cells a resource block from the plurality of resource blocks, wherein an effect of interference among adjacent cells with a same resource block assignment is reduced as measured by a network performance metric related to a number of resource block assignment conflicts over the plurality of cells, wherein the network performance metric is in accordance with a network neighboring relation table (NRT) maintained for the network, and the network NRT comprises a matrix of size n*n elements, wherein n is a number of the plurality of cells, wherein an element Bij of the matrix is Bij=Aij+Aji, wherein - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of resource allocation for use in a wireless network, the method comprising:
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selecting a first cell among a plurality of cells and assigning a first resource block to the first cell; determining which cell among the plurality of cells that have not been assigned a resource block is a first most sensitive cell, the first most sensitive cell being most sensitive to interference caused by the first resource block assigned to the first cell; assigning a most favorite resource block to the first most sensitive cell, wherein the first most sensitive cell and the most favorite resource block are determined by measurement of a network performance metric in accordance with a network neighboring relation table (NRT) maintained for the network, and the network NRT comprises a matrix of size n*n elements, wherein n is a number of the plurality of cells, wherein an element Bij of the matrix is Bij=Aij+Aji, wherein - View Dependent Claims (15, 16, 17, 18, 19)
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20. An apparatus to manage resource allocation in a wireless network, the apparatus comprising:
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a decision unit configured to receive notice of a network event and cause triggering of a coloring decision to assign a plurality of resource blocks to a plurality of cells within the network based on the network event; an assignment unit configured to receive a network performance metric and perform a network coloring by assigning each cell among the plurality of cells an associated resource block, wherein an effect of interference among adjacent cells with a same resource block assignment is reduced measured by the network performance metric related to a number of resource block assignment conflicts over the plurality of cells; and a storage unit configured to store a network neighboring relation table (NRT) maintained for the network, and the network NRT comprising a matrix of size n*n, wherein n is a number of cells, wherein an element Bij of the matrix is Bij=Aij+Aji, wherein - View Dependent Claims (21, 22, 23)
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24. An apparatus located in a cell of a wireless network, comprising:
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a collection unit configured to receive a plurality of data Aijk by a plurality of User Equipments (UE) in the cell, wherein an Aijk is a relative measurement of a reference signal receive power (RSRP) caused by an assigned resource block of an adjacent cell j measured by a UE in the cell, wherein the assigned resource block comprises a frequency bandwidth, a time slot, or a power level of a signal; a storage unit configured to store a base station neighboring relation table (NRT) generated from the plurality of data Aijk, wherein the base station NRT comprises a matrix of size s*s, wherein s is a number of adjacent cells around the cell the apparatus is located, wherein an element Bij of the matrix is Bij=Aij+Aji, wherein - View Dependent Claims (25, 26)
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Specification