US 8,914,054 B2Granted

Dynamic resource selection to reduce interference resulting from direct device to device communications

AssigneeTelefonaktiebolaget L M Ericsson (publ)

InventorsKonstantinos Dimou, Francisco Rodrigo P. Cavalcanti, Gabor Fodor, Tarcísío Maciel

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Abstract

Systems and methods are disclosed for selecting resources for direct device to device communications in a cellular communication network. Preferably, resources for the direct device to device communications are selected to minimize, or at least substantially reduce, interference that results from the direct device to device communications in the cellular communication network. In one embodiment, a downlink resource of the cellular communication network is selected as a resource for a direct device to device communication link between a first wireless device and a second wireless device if at least one of the first and second wireless devices is less than a predefined threshold radio distance from a closest base station in the cellular communication network. Otherwise, an uplink resource of the cellular communication network is selected as a resource for the direct device to device communication link between the first and second wireless devices.

Claims30

Dependent claims

A network node configured to select resources for a direct device to device communication link between a first wireless device and a second wireless device in a cellular communication network, comprising:

a transceiver sub-system configured to enable wireless communication;
and
a processing sub-system associated with the transceiver sub-system configured to:
select a downlink resource of the cellular communication network as a resource for the direct device to device communication link between the first wireless device and the second wireless device if at least one of a radio distance between the first wireless device and a base station in the cellular communication network that is closest to the first wireless device and a radio distance between the second wireless device and a base station in the cellular communication network that is closest to the second wireless device is less than a predefined threshold radio distance;
and
select an uplink resource of the cellular communication network as the resource for the direct device to device communication link between the first wireless device and the second wireless device if the radio distance between the first wireless device and the base station in the cellular communication network that is closest to the first wireless device and the radio distance between the second wireless device and the base station in the cellular communication network that is closest to the second wireless device are greater than the predefined threshold radio distance.

3 more elements

Dependencies are inferred from the claim text.