System and Method of Unlicensed Bi-Directional Communications Over an Ultra-High Frequency (UHF) Band Reserved for Licensed Communications
First Claim
Patent Images
1. A method, comprising the acts of:
- scanning an ultra-high frequency (UHF) band;
identifying whether there are frequency bands within the UHF frequency band suitable for transmitting information;
wherein when there are frequency bands within the UHF band suitable for transmitting the information, an unlicensed communication channel is established over one of the frequency bands suitable for transmitting the information, andwherein when there are not frequency bands within the UHF band that are suitable for transmitting the information, a licensed communication channel is established over a second frequency band that is different than the UHF band.
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Abstract
Systems and methods of unlicensed bi-directional communications over Ultra-High Frequency (UHF) band reserved for licensed communications are provided. A base transceiver station scans the UHF band to identify unused frequency bands. When an unused frequency band is detected, the base transceiver station transmits a tone indicating that the unused frequency band can be used for communicating with the base transceiver station. When the base transceiver station determines that the unused frequency band is being used, then the base transceiver station scans the UHF band to identify another unused frequency band for communications.
111 Citations
18 Claims
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1. A method, comprising the acts of:
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scanning an ultra-high frequency (UHF) band; identifying whether there are frequency bands within the UHF frequency band suitable for transmitting information; wherein when there are frequency bands within the UHF band suitable for transmitting the information, an unlicensed communication channel is established over one of the frequency bands suitable for transmitting the information, and wherein when there are not frequency bands within the UHF band that are suitable for transmitting the information, a licensed communication channel is established over a second frequency band that is different than the UHF band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising the acts of:
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scanning an ultra-high frequency (UHF) band; determining whether one or more frequency bands within the UHF band are suitable for transmitting the information; wherein when the one or more frequency bands within the UHF band are suitable for transmitting the information, selecting one of the frequency bands within the UHF band and transmitting a tone of the selected frequency band, and wherein when the one or more frequency bands within the UHF band are not suitable for transmitting the information, a communication channel is established over a second frequency band that is not coextensive with the UHF band. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification