Method and a node for allocating spectrum efficiently in clusters of nodes
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorVirgil Cimpu
Life of this patent
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Abstract
There is provided a method in a controlling node to efficiently assign spectrum to nodes representing wireless base stations which are using/sharing the same block of spectrum. The nodes are organized in a graph where connections between nodes represent potential of interference. The nodes are grouped based on the ability to handle mutual interference. The method includes: determining recursively a plurality of clusters of nodes of increasing sizes; and assigning a bandwidth to nodes in each cluster, based on the size of the cluster. By so doing, the spectrum allocation can be optimized, allowing each node access to an increased amount of spectrum.
Claims9
A method in a controlling node, the method comprising:
- determining recursively a plurality of clusters of nodes by recursively increasing a size of the clusters, starting with clusters of size one and determining clusters with the increased size until all nodes are associated with a cluster, wherein the plurality of clusters comprises a number of co-existence groups (CxGs) and wherein the size of a cluster of nodes indicates the number of CxGs, that the nodes in each cluster belong to, a CxG including one or more nodes connected to each other for which interference between the nodes is taken care of within the group;
- and
- assigning a bandwidth to each cluster, based on the size of the cluster.
A computer program product comprising a non-transitory computer readable storage medium having computer readable program code embodied in the medium, the computer readable program code comprising computer readable code to perform:
- determining recursively a plurality of clusters of nodes by recursively increasing a size of the clusters, starting with clusters of size one and determining clusters with the increased size until all nodes are associated with a cluster, wherein the plurality of clusters comprises a number of co-existence groups (CxGs) and wherein the size of a cluster of nodes indicates the number of CxGs, that the nodes in each cluster belong to, a CxG including one or more nodes connected to each other for which interference between the nodes is taken care of within the group;
- and assigning a bandwidth to each cluster, based on the size of the cluster.
A non-transitory computer readable memory configured to store executable instructions for a controlling node, the executable instructions when executed by one or more processors cause the controlling node to perform:
- determining recursively a plurality of clusters of nodes by recursively increasing a size of the clusters, starting with clusters of size one and determining clusters with the increased size until all nodes are associated with a cluster, wherein the plurality of clusters comprises a number of co-existence groups (CxGs) and wherein the size of a cluster of nodes indicates the number of CxGs, that the nodes in each cluster belong to, a CxG including one or more nodes connected to each other for which interference between the nodes is taken care of within the group;
- and assigning a bandwidth to each cluster, based on the size of the cluster.
A controlling node comprising a processing circuitry, the processing circuitry comprising a memory and a processor connected thereto, the memory containing instructions that, when executed, cause the processor to:
- determine recursively a plurality of clusters of nodes by recursively increasing a size of the clusters, starting with clusters of size one and determining clusters with the increased size until all nodes are associated with a cluster, wherein the plurality of clusters comprises a number of co-existence groups (CxGs) and wherein the size of a cluster of nodes indicates the number of CxGs, that the nodes in each cluster belong to, a CxG including one or more nodes connected to each other for which interference between the nodes is taken care of within the group;
- and
- assign a bandwidth to each cluster, based on the size of the cluster.
Dependencies are inferred from the claim text.