SPECTRUM AUTHORIZATION AND RELATED COMMUNICATIONS METHODS AND APPARATUS
First Claim
1. A method of operating a first communications device, the method comprising:
- receiving a first spectrum access key;
receiving a first signal from a second communications device;
generating a first pseudo-random bit sequence based on the first spectrum access key and based on the first signal from the second communications device; and
using the generated first pseudo-random bit sequence to communicate over an air link with a third communications device.
1 Assignment
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Accused Products
Abstract
Various embodiments relate to wireless communications, and more particularly, to methods and apparatus for authorizing use of spectrum, e.g., through the issuance of spectrum access keys, and/or preventing or discouraging the unauthorized use of licensed spectrum. Peer to peer wireless communications between authorized users of licensed spectrum may involve scrambling/descrambling of information communicated between authorized devices. In some embodiments air interface timing and/or other information received from a second device, e.g., a beacon or GPS transmitter, is incorporated into a computation of a pseudo-random bit sequence which is also computed based on a spectrum access key communicated to authorized spectrum users. In some embodiments authorized peer to peer devices scramble communicated information based on the generated pseudo random bit sequence thereby preventing or discouraging communication with devices which are not authorized to use the spectrum and lack a spectrum access key used to generate the pseudo random bit sequence.
69 Citations
24 Claims
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1. A method of operating a first communications device, the method comprising:
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receiving a first spectrum access key; receiving a first signal from a second communications device; generating a first pseudo-random bit sequence based on the first spectrum access key and based on the first signal from the second communications device; and using the generated first pseudo-random bit sequence to communicate over an air link with a third communications device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A first communications device comprising:
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at least one processor configured to; receive a first spectrum access key; receive a first signal from a second communications device; generate a first pseudo-random bit sequence based on the received first spectrum access key and the first signal from the second communications device; and use the generated first pseudo-random bit sequence to communicate over an airlink with a third communications device; and a memory coupled to said at least one processor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A first communications device comprising:
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means for receiving a first spectrum access key from a spectrum access key source; means for receiving a first signal from a second communications device; means for generating a first pseudo-random bit sequence based on the received first spectrum access key and based on the first signal from the second communications device; and means for communicating over an airlink, using the generated first pseudo-random bit sequence, with a third communications device. - View Dependent Claims (18, 19, 20, 21)
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22. A computer program product for use in a first communications device, comprising:
a computer readable medium comprising; code for causing at least one computer to receive a first spectrum access key; code for causing the at least one computer to receive a first signal from a second communications device; code for causing the at least one computer to generate a first pseudo-random bit sequence based on the received first spectrum access key and based on the first signal from the second communications device; and code for causing the at least one computer to use the generated first pseudo-random bit sequence to communicate over an airlink with another device which also has said first spectrum access key and which received said first signal from the second communications device. - View Dependent Claims (23, 24)
Specification