METHODS AND APPARATUS FOR TIMING SYNCHRONIZATION USING MULTIPLE DIFFERENT TIMING SIGNAL SOURCES
First Claim
1. A method of operating a wireless terminal, the method comprising:
- detecting timing signal sources which may be used for synchronizing peer to peer communications;
determining a first set of peer communications time intervals based on a first detected timing signal and a second set of peer communications time intervals based on a second detected timing signal, said first and second timing signals corresponding to different timing signal sources;
transmitting a first peer to peer signal during at least one of the first set of time intervals; and
transmitting a second peer to peer signal during at least one of the second set of time intervals.
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Accused Products
Abstract
A wireless terminal detects timing signals from different local timing signal sources. The wireless terminal selects from the plurality of detected timing signal sources two timing signal sources in accordance with a predetermined timing signal source priority ordering. In some embodiments, the wireless terminal intentionally selects two timing signal sources which are not synchronized with respect to one another. The wireless terminal determines a first set of peer communications time intervals corresponding to a first selected timing signal source and a second set of peer communications time intervals corresponding to a second selected timing signal source. The wireless terminal transmits a peer to peer signal, e.g., a peer discovery signal, during at least one of the first set of peer communications time intervals. The wireless terminal transmits a peer to peer signal, e.g., a peer discovery signal, during at least one of the second set of peer communications time intervals.
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Citations
20 Claims
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1. A method of operating a wireless terminal, the method comprising:
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detecting timing signal sources which may be used for synchronizing peer to peer communications; determining a first set of peer communications time intervals based on a first detected timing signal and a second set of peer communications time intervals based on a second detected timing signal, said first and second timing signals corresponding to different timing signal sources; transmitting a first peer to peer signal during at least one of the first set of time intervals; and transmitting a second peer to peer signal during at least one of the second set of time intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless terminal comprising:
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means for detecting timing signal sources which may be used for synchronizing peer to peer communications; means for determining a first set of peer communications time intervals based on a first detected timing signal and a second set of peer communications time intervals based on a second detected timing signal, said first and second timing signals corresponding to different timing signal sources; means for transmitting a first peer to peer signal during at least one of the first set of time intervals; and means for transmitting a second peer to peer signal during at least one of the second set of time intervals. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A computer program product for use in a wireless terminal, the computer program product comprising:
a non-transitory computer readable medium comprising; code for causing at least one computer to detect timing signal sources which may be used for synchronizing peer to peer communications; code for causing said at least one processor to determine a first set of peer communications time intervals based on a first detected timing signal and a second set of peer communications time intervals based on a second detected timing signal, said first and second timing signals corresponding to different timing signal sources; code for causing said at least one processor to transmit a first peer to peer signal during at least one of the first set of time intervals; and code for causing said at least one processor to transmitting a second peer to peer signal during at least one of the second set of time intervals.
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16. A wireless terminal comprising:
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at least one processor configured to; detect timing signal sources which may be used for synchronizing peer to peer communications; determine a first set of peer communications time intervals based on a first detected timing signal and a second set of peer communications time intervals based on a second detected timing signal, said first and second timing signals corresponding to different timing signal sources; transmit a first peer to peer signal during at least one of the first set of time intervals; and transmit a second peer to peer signal during at least one of the second set of time intervals; and memory coupled to said at least one processor. - View Dependent Claims (17, 18, 19, 20)
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Specification