Method and system enabling use of white space radio spectrum using an out of band control channel
First Claim
1. A method of dynamic allocation of spectrum for a communication device where a band of radio frequencies is used with a local, regional, or national frequency allocation that leads to a subset of the bands containing unused or available frequencies in any geographic area, but not all channels are used in all markets due to the need to protect receivers from interference from other stations, comprising the steps of:
- receiving an user channel map on a control channel containing at least boundary location information for one or more channel resources, the control channel being outside the one or more channel resources;
determining at least an approximate location for the communication device;
comparing the approximate location with the boundary location information;
determining which channels can avoid co-channel and adjacent channel interference with licensed user signal and other unlicensed user signals based on the comparison; and
relaxing communication parameters for the one or more channel resources if no licensed user signals are found in the user channel map, and tightening the communication parameters if co-channel, adjacent channel, or other interference generating channel use is found within the user channel map.
1 Assignment
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Accused Products
Abstract
A system (10) and method (50) of dynamic allocation of spectrum for a communication device involves receiving (51) a user channel map (UCM) on a control channel that is outside the band of interest. The UCM can include at least boundary location information for one or more channel resources. The method can determine (52) at least an approximate location for the communication device, compare (56) the approximate location with the boundary location information, and determine (57) which channels can avoid co-channel and adjacent channel interference with licensed users and other unlicensed users based on the comparison. The method can relax communication parameters for the one or more channel resources if no licensed user signals are found in the user channel map, and tightening the communication parameters if co-channel, adjacent channel, or other interference generating channel use is found within the user channel map.
51 Citations
20 Claims
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1. A method of dynamic allocation of spectrum for a communication device where a band of radio frequencies is used with a local, regional, or national frequency allocation that leads to a subset of the bands containing unused or available frequencies in any geographic area, but not all channels are used in all markets due to the need to protect receivers from interference from other stations, comprising the steps of:
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receiving an user channel map on a control channel containing at least boundary location information for one or more channel resources, the control channel being outside the one or more channel resources; determining at least an approximate location for the communication device; comparing the approximate location with the boundary location information; determining which channels can avoid co-channel and adjacent channel interference with licensed user signal and other unlicensed user signals based on the comparison; and relaxing communication parameters for the one or more channel resources if no licensed user signals are found in the user channel map, and tightening the communication parameters if co-channel, adjacent channel, or other interference generating channel use is found within the user channel map. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system of dynamic allocation of spectrum for a communication device where a band of radio frequencies is used with a local, regional, or national frequency allocation that leads to a subset of the bands containing unused or available frequencies in any geographic area, but not all channels are used in all markets due to the need to protect receivers from interference from other stations, comprising:
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a receiver for receiving an user channel map on a control channel, wherein the user channel maps contains at least boundary location information for one or more channel resources, the control channel being outside the one or more channel resources; a processor coupled to the receiver, wherein the processor is operable to; determine at least an approximate location for the communication device; compare the approximate location with the boundary location information; determine which channels can avoid co-channel and adjacent channel interference with licensed user signals and other unlicensed user signals based on the comparison; and relax communication parameters if no licensed user signals are found in the user channel map, tighten the communication parameters if co-channel, adjacent channel, or other interference generating channel use is found within the user channel map. - View Dependent Claims (16, 17, 18, 19)
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20. A system of dynamic allocation of spectrum for a communication device where a band of radio frequencies is used with a local, regional, or national frequency allocation that leads to a subset of the bands containing unused or available frequencies in any geographic area, but not all channels are used in all markets due to the need to protect receivers from interference from other stations, comprising:
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a receiver for receiving an user channel map on a control channel, wherein the user channel maps contains at least boundary location information for one or more channel resources, the control channel being outside the one or more channel resources; a processor coupled to the receiver, wherein the processor is operable to; determine at least an approximate location for the communication device; compare the approximate location with the boundary location information; determine which channels can avoid co-channel and adjacent channel interference with licensed users and other unlicensed users based on the comparison; and determine how to avoid interference by determining a probability that a given user device will cause interference to a licensed user device by multiplying (P1) the probability that a given location does not have coverage on white space channel “
N”
times (P2) the probability that a given user device is in the proximity of a licensed receiver to cause interference.
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Specification