Interference mitigation technique
First Claim
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1. A backhaul network for a mobile wireless network including a plurality of clusters of nodes, each cluster including a feeder node coupled to a core network and at least one node coupled in multi-hop topology to the feeder node, the backhaul network comprising:
- said nodes in each cluster forming links;
said links utilizing a 1;
n frequency re-use scheme in backhaul communication wherein an entire bandwidth of the network is divided by n, where n equals 2 to about 16, wherein each wireless backhaul link at an edge of a cluster communicates over a different portion of said bandwidth at a same time.
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Abstract
A backhaul network for a mobile wireless network including a plurality of nodes forming links, the links utilizing a 1:n frequency re-use scheme in backhaul communication, where n equals 2 to about 16, wherein each link communicates over a different portion of an entire bandwidth of the network.
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Citations
7 Claims
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1. A backhaul network for a mobile wireless network including a plurality of clusters of nodes, each cluster including a feeder node coupled to a core network and at least one node coupled in multi-hop topology to the feeder node, the backhaul network comprising:
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said nodes in each cluster forming links; said links utilizing a 1;
n frequency re-use scheme in backhaul communication wherein an entire bandwidth of the network is divided by n, where n equals 2 to about 16, wherein each wireless backhaul link at an edge of a cluster communicates over a different portion of said bandwidth at a same time.
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2. A method of reducing interference in a mobile wireless network including a plurality of clusters of nodes, each cluster including a feeder node coupled to a core network and at least one node coupled in multi-hop topology to the feeder node, the method comprising:
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utilizing a 1;
n frequency reuse scheme in backhaul communication wherein an entire bandwidth of the network is divided by n, where n equals 2 to about 16, for at least two spatially adjacent nodes in the network having uncoordinated radio resources;wherein each of said nodes transmits over a different portion of said entire bandwidth at a same time. - View Dependent Claims (3, 4, 5)
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6. A mobile wireless network comprising:
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a plurality of nodes, said nodes being coupled for wireless communication in virtual clusters of nodes, each cluster including a feeder coupled to a core network, a wireless link being formed between each pair of adjacent nodes, each node including at least one, and preferably a plurality of radio transceivers providing access communication and point-to-point in-band backhaul communication over the link; a modem coupled to each transceiver; a plurality of antennas mounted in the node, one coupled to each modem, the antennas being able to provide multiple concurrent transmissions over multiple antennas;
a controller in each node adapted and configured for control and coordination of the transceivers and associated modems;means for creating sectorization of each node; and an interference mitigation system between adjacent clusters during wireless backhaul communication comprising; means for dividing each cluster into virtual tiers, according to number of hops to the feeder, means for causing transmission utilizing a 1;
1 frequency re-use scheme during wireless backhaul communication within innermost tiers in each cluster, wherein all transmit over an entire available bandwidth at different times; andmeans for causing transmission during wireless backhaul communication utilizing a 1;
n frequency re-use scheme in an outermost tier, where n is between 2 and about 16, wherein spatially close nodes in said outermost tier in adjacent clusters transmit at a same time over a different portion of said entire available bandwidth. - View Dependent Claims (7)
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Specification