Spectrum utilization in a radio system
First Claim
1. A method of using a radio frequency spectrum, comprising sharing a shared radio spectrum by a first radio system and a second radio system co-existing in at least one geographical location, said first radio system comprising radio access points providing user terminals of the first radio system with access to the first radio system at least in said shared radio spectrum, providing at least one radio access point of the first radio system in said at least one geographical location with information on the co-existing second radio system and the constraints it causes to user terminals operating in the service area of the radio access point, broadcasting, at said at least one radio access point, beacon or control information derived from said provided information to user terminals operating in the service area of said at least one radio access point, and adapting operation of said user terminals in said shared radio spectrum according to said beacon or control information such that user terminals can operated co-existent with the second radio system.
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Accused Products
Abstract
The invention relates to sharing a radio spectrum between a first radio system and a second radio system which co-exist so that the radio spectrum is shared at least locally. A radio access point of the first radio system is provided with information on the co-existing second radio system and the constraints it causes to user terminals operating in the service area of the radio access point. The radio access point may retrieve or obtain information about the other radio system by any appropriate, such from a centralized database. Based on the information the radio access point creates and broadcasts beacon or control information to user terminals operating in the service area of the radio access point, to thereby enable the user terminals to adjust their operation so that they can co-exist with the second radio system. Thus, there are two processes: information retrieval about another (second) system and signalling of the spectrum sharing information.
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Citations
43 Claims
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1. A method of using a radio frequency spectrum, comprising sharing a shared radio spectrum by a first radio system and a second radio system co-existing in at least one geographical location, said first radio system comprising radio access points providing user terminals of the first radio system with access to the first radio system at least in said shared radio spectrum,
providing at least one radio access point of the first radio system in said at least one geographical location with information on the co-existing second radio system and the constraints it causes to user terminals operating in the service area of the radio access point, broadcasting, at said at least one radio access point, beacon or control information derived from said provided information to user terminals operating in the service area of said at least one radio access point, and adapting operation of said user terminals in said shared radio spectrum according to said beacon or control information such that user terminals can operated co-existent with the second radio system.
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25. A radio system, comprising
a shared radio spectrum shared with a second radio system co-existing in at least one geographical location, radio access points providing user terminals with access to the radio system at least in said shared radio spectrum, and at least one of said radio access points in said at least one geographical location being provided with information on the co-existing second radio system and the constraints it causes to user terminals operating in the service area of the radio access point; said at least one radio access point being configured to broadcast beacon or control information derived from said provided information to user terminals operating in the service area of said at least one radio access point, to thereby enable said user terminals to adapt their operation in said shared radio spectrum according to said beacon or control information such that user terminals can operated co-existent with the second radio system. - View Dependent Claims (26, 27, 28, 29, 30)
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31. A radio access point for a first radio system, comprising
a shared radio spectrum shared with a second radio system co-existing in approximately same geographical location with the radio access point, to thereby provide user terminals with access to the first radio system at least in said shared radio spectrum, a database which contains information on the co-existing second radio system and the constraints it causes to user terminals operating in the service area of the radio access point, and a transmitter that broadcasts beacon or control information derived from said provided information to user terminals operating in the service area of said radio access point, to thereby enable said user terminals to adapt their operation in said shared radio spectrum according to said beacon or control information such that user terminals can operated co-existent with the second radio system.
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36. A relay radio access point for a first radio system, said relay radio access point being configured to operate as a relay station between a user terminal and a further radio access point operating as a base station, and comprising
a shared radio spectrum shared with a second radio system co-existing in approximately same geographical location with the relay radio access point, to thereby provide user terminals with access to the first radio system at least in said shared radio spectrum, a receiver that receives from said further radio access point information on the co-existing second radio system and the constraints it causes to user terminals operating in the service area of the relay radio access point, and a transmitter that broadcasts beacon or control information derived from said provided information to user terminals operating in the service area of said relay radio access point, to thereby enable said user terminals to adapt their operation in said shared radio spectrum according to said beacon or control information such that user terminals can operated co-existent with the second radio system.
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38. A user terminal, comprising
a transceiver which employs a shared radio spectrum shared with a first radio, system and a second radio system co-existing in approximately same geographical location with a serving radio access point of the first radio system, to access to the first radio system at least in said shared radio spectrum, and a control unit which is configured to, based on beacon or control information broadcasted by the radio access point of the first radio system, adapting operation of said user terminal in said shared radio spectrum according to said beacon or control information such that the user terminal can operate co-existent with the second radio system, said beacon or control information containing information on the use of the shared radio spectrum.
Specification