Cellular user immunity
AssigneeUbiqam Ltd.
InventorsBaruch CYZS, Oren AMIDAN, Amir MEIR, Daniel MANOR
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Abstract
There is provided an apparatus for mitigating foreign interference of a mobile device, comprising: a processor executing a code for: identifying a serving base station that is serving the mobile device, identifying at least one handover base station that the mobile device is likely to handover to, and computing a set of weights for generating by a plurality of antennas associated with the mobile device, a composite beam pattern that includes beams steered towards the serving base station and for the at least one handover base station, and that forms null towards at least one interference source.
Claims22
An apparatus for improving signal to interference and noise ratio (SINR) of a communication device connected to a cellular network, comprising:
- a processor executing a code for:
- identifying a serving base station that is serving the communication device;
- identifying at least one handover base station that the communication device is likely to handover to;
- and
- computing a set of weights for generating by a plurality of antennas associated with the communication device, a composite beam pattern that includes beams steered towards the serving base station and for the at least one handover base station, wherein the set of weights are computed according to signal trace of the serving base station and the at least one handover base station.
The apparatus of claim 23, wherein the set of weights are computed for reducing or eliminating interference by the interference sources on a download link (DL) of the communication device from the serving base station.
The apparatus of claim 23, wherein the processor further executes code for:
- for a respective handover base station of the handover base stations, computing a sub-set of weights for steering a beam generated by the plurality of antennas to the respective handover base station and forming a null towards at least one of the handover base stations excluding the respective handover station and towards at least one of the interference sources;
- and
- computing the set of weights as a combination of a plurality of the sub-set of weights.
The apparatus of claim 23, wherein the interference source comprises at least one other interfering base station in communication with a wireless network that includes the serving base station and at least one handover base station, the at least one other interfering base station generating frequency reuse noise by reusing a frequency band used by at least one of the serving base station and the at least one handover base station, wherein the set of weights are selected for nulling the interference base station's frequency reuse noise.
(canceled)
The apparatus of claim 23, wherein a number of the plurality of antennas associated with the communication device is below a sum of a number of interference sources and a number of the serving base station and the at least one handover station, exploiting available degrees of freedom for cancellation of the interference sources.
16-17. (canceled)
The apparatus of claim 23, wherein in response to inability to form nulls towards the interference sources, the set of weights are selected for generating a single beam with narrow width directed towards the serving base station.
The apparatus of claim 23, in response to reception power from remote interference sources being significantly lower than reception power from closer interference sources, computing the set of weights for forming nulls towards the closer interference sources and ignoring the remote interference sources.
A method of improving signal to interference and noise ratio (SINR) of a communication device connected to a cellular network, comprising:
- identifying a serving base station that is serving the communication device;
- identifying at least one handover base station that the communication device is likely to handover to;
- and
- computing a set of weights for generating by a plurality of antennas associated with the communication device, a composite beam pattern that includes beams steered towards the serving base station and for the at least one handover base station, wherein the set of weights are computed according to signal trace of the serving base station and the at least one handover base station.
A non-transitory medium storing program instructions for improving signal to interference and noise ratio (SINR) of a communication device connected to a cellular network, which when executed by at least one processor, cause the at least one processor to:
- identify a serving base station that is serving the communication device;
- identify at least one handover base station that the communication device is likely to handover to;
- and
- compute a set of weights for generating by a plurality of antennas associated with the communication device, a composite beam pattern that includes beams steered towards the serving base station and for the at least one handover base station, wherein the set of weights are computed according to signal trace the serving base station and the at least one handover base station.
Dependencies are inferred from the claim text.