Interference avoidance in white space communication systems
First Claim
1. A method of operating mobile communication system equipment to avoid interfering with another transmitter'"'"'s use of a spectral resource, wherein the mobile communication system equipment includes a main node that serves a plurality of user equipments, the method comprising:
- operating the main node to receive, from each one of two or more remote sensors, sensing information that indicates whether a signal from said another transmitter has been detected, wherein each of the remote sensors is situated at a respective one of two or more sensor locations;
using the sensing information and information about the sensor locations to ascertain one or more exclusion boundaries needed to avoid the main node'"'"'s transmissions from interfering with said another transmitter'"'"'s use of the spectral resource;
ascertaining beamforming parameters that will control geometrical coverage limits of the main node'"'"'s transmissions so as to enable the main node to transmit within one or more predefined geographical areas except for any portion of a predefined area located on a far side of the one or more exclusion boundaries;
producing two or more adjusted signals as a function of the beamforming parameters and one or more signals to be transmitted; and
transmitting the two or more adjusted signals from respective ones of two or more antennas.
1 Assignment
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Accused Products
Abstract
Mobile communication system equipment avoids interfering with another transmitter'"'"'s operation. Sensing information indicating whether the other transmitter'"'"'s signal has been detected is received from remote sensors, wherein each of the remote sensors is situated at a respective one of two or more sensor locations. The sensing information and information about the sensor locations is used to ascertain one or more exclusion boundaries needed to avoid interfering with the other transmitter'"'"'s use of the spectral resource. Beamforming parameters are ascertained that will enable the main node to transmit within one or more predefined geographical areas except for any portion of a predefined area located on a far side of the one or more exclusion boundaries. Two or more adjusted signals are produced as a function of the beamforming parameters and one or more signals to be transmitted. The adjusted signals are transmitted from respective ones of two or more antennas.
24 Citations
18 Claims
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1. A method of operating mobile communication system equipment to avoid interfering with another transmitter'"'"'s use of a spectral resource, wherein the mobile communication system equipment includes a main node that serves a plurality of user equipments, the method comprising:
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operating the main node to receive, from each one of two or more remote sensors, sensing information that indicates whether a signal from said another transmitter has been detected, wherein each of the remote sensors is situated at a respective one of two or more sensor locations; using the sensing information and information about the sensor locations to ascertain one or more exclusion boundaries needed to avoid the main node'"'"'s transmissions from interfering with said another transmitter'"'"'s use of the spectral resource; ascertaining beamforming parameters that will control geometrical coverage limits of the main node'"'"'s transmissions so as to enable the main node to transmit within one or more predefined geographical areas except for any portion of a predefined area located on a far side of the one or more exclusion boundaries; producing two or more adjusted signals as a function of the beamforming parameters and one or more signals to be transmitted; and transmitting the two or more adjusted signals from respective ones of two or more antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for operating mobile communication system equipment to avoid interfering with another transmitter'"'"'s use of a spectral resource, wherein the mobile communication system equipment includes a main node that serves a plurality of user equipments, the apparatus comprising:
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circuitry configured to operate the main node to receive, from each one of two or more remote sensors, sensing information that indicates whether a signal from said another transmitter has been detected, wherein each of the remote sensors is situated at a respective one of two or more sensor locations; circuitry configured to use the sensing information and information about the sensor locations to ascertain one or more exclusion boundaries needed to avoid the main node'"'"'s transmissions from interfering with said another transmitter'"'"'s use of the spectral resource; circuitry configured to ascertain beamforming parameters that will control geometrical coverage limits of the main node'"'"'s transmissions so as to enable the main node to transmit within one or more predefined geographical areas except for any portion of a predefined area located on a far side of the one or more exclusion boundaries; circuitry configured to produce two or more adjusted signals as a function of the beamforming parameters and one or more signals to be transmitted; and circuitry configured to transmit the two or more adjusted signals from respective ones of two or more antennas. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification