Method for spectrum sharing in a multi-mode system and related apparatus
First Claim
Patent Images
1. An apparatus comprising:
- at least one processor;
at least one memory including computer program code;
the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform at least;
checking for available radio spectrum resources in a first system in a radio coverage area;
sending information to a second system indicating the availability of radio spectrum resources of the first system which is usable by said second system in at least part of said radio coverage area and sending a message to said second system requesting at least one entity of said second system to transmit a reference signal on an available frequency;
receiving one or more said reference signals from said second system on said available frequency;
comparing one or more received reference signal power levels with a map of allowed interference limits;
calculating one or more offsets to the allowed interference limits to generate an offset map;
sending the offset map to one or more base stations of the second system such that, based on the offset map, the one or more base stations allocate radio resources for downlink and uplink;
wherein said first system has priority over said radio spectrum resources; and
wherein said apparatus is configured to determine interference information for defining an exclusion zone around an entity of said first system.
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Abstract
A measurement apparatus comprising means for checking for available radio spectrum resource in a first system in a radio coverage area; means for sending information to a second system indicating the availability of radio spectrum resource of the first system which is usable by said second system in at least part of said radio coverage area, wherein said first system has priority over said radio spectrum resource.
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Citations
31 Claims
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1. An apparatus comprising:
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at least one processor; at least one memory including computer program code; the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform at least; checking for available radio spectrum resources in a first system in a radio coverage area; sending information to a second system indicating the availability of radio spectrum resources of the first system which is usable by said second system in at least part of said radio coverage area and sending a message to said second system requesting at least one entity of said second system to transmit a reference signal on an available frequency; receiving one or more said reference signals from said second system on said available frequency; comparing one or more received reference signal power levels with a map of allowed interference limits; calculating one or more offsets to the allowed interference limits to generate an offset map; sending the offset map to one or more base stations of the second system such that, based on the offset map, the one or more base stations allocate radio resources for downlink and uplink; wherein said first system has priority over said radio spectrum resources; and wherein said apparatus is configured to determine interference information for defining an exclusion zone around an entity of said first system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A measurement method comprising:
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checking for available radio spectrum resources in a first system in a radio coverage area; sending information to a second system indicating the availability of radio spectrum resources of the first system which is usable by said second system in at least part of said radio coverage area and sending a message to said second system requesting at least one entity of said second system to transmit a reference signal on an available frequency; receiving said reference signal from said second system on said available frequency; comparing one or more received reference signal power levels with a map of allowed interference limits; calculating one or more offsets to the allowed interference limits to generate an offset map; sending the offset map to one or more base stations of the second system such that based on the offset map, the one or more base stations allocate radio resources for downlink and uplink; and determining interference information for defining an exclusion zone around an entity of said first system; wherein said first system has priority over said available radio spectrum resources. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 31)
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27. A network entity in a second system, the network entity comprising:
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at least one processor; at least one memory including computer program code; the at least one memory and the computer program code configured, with the at least one processor, to cause the network entity to perform at least; receiving a message from a measuring apparatus, said message requesting said network entity to transmit a reference signal; transmitting said requested reference signal;
wherein said reference signal includes interference information for defining an exclusion zone around an entity of a first system;receiving an offset map from the measuring apparatus; and allocating, based on the offset map, radio resources for downlink and uplink; wherein the offset map has been generated by comparing one or more received reference signal power levels with a map of allowed interference limits and calculating one or more offsets to the allowed interference limits; and wherein said first system has priority over said radio spectrum resources. - View Dependent Claims (28)
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29. A measurement apparatus comprising:
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at least one processor; at least one memory including computer program code; the at least one memory and the computer program code configured, with the at leak one processor, to cause the measurement apparatus to perform at least; checking for available radio spectrum resource in a first system in a radio coverage area; sending a request to a second system for a reference signal, said reference signal being on said available radio resource; receiving said reference signal from said second system on said available radio spectrum resource; using said reference signal to determine interference to the first system caused by use of said available radio spectrum resource by said second system by comparing one or more received reference signal power levels with a map of allowed interference limits, calculating one or more offsets to the allowed interference limits to generate an offset map; and
sending the offset map to one or more base stations of the secondary system such that, based on the offset map, the one or more base stations allocate radio resources for downlink and uplink; andtransmitting to said second system information indicating if at least, available radio spectrum resource is usable by said second system.
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30. A method comprising:
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checking for available radio spectrum resource in a first system in a radio coverage area; sending a request to a second system for a reference signal, said reference signal being on said available radio resource; receiving said reference signal from said second system on said available radio spectrum resource; using said reference signal to determine interference to the first system caused by use of said available radio spectrum resource by said second system by comparing one or more received reference signal power levels with a map of allowed interference limits, calculating one or more offsets to the allowed interference limits to generate an offset map; and
sending the offset map to one or more base stations of the secondary system such that, based on the offset map, the one or more base stations allocate radio resources for downlink and uplink; andtransmitting to said second system information indicating if at least available radio spectrum resource is usable by said second system.
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Specification