Synchronization Of A Peer-To-Peer Communication Network
First Claim
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1. A method of operating a first wireless communications terminal, the method comprising:
- determining an original symbol timing;
receiving a first timing synchronization signal from at least a second wireless communications terminal;
calculating a timing adjustment based in part on the first timing synchronization signal;
determining an adjusted symbol timing by adjusting the original symbol timing by an amount determined by the calculated timing adjustment; and
transmitting a second timing synchronization signal with the adjusted symbol timing.
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Abstract
In an ad hoc peer-to-peer communications network, timing synchronization is facilitated between two or more nodes. A node can establish an original symbol timing and receive a first timing synchronization symbol from a peer node. A timing adjustment can be calculated based in part on the first timing synchronization symbol. An adjusted symbol timing can be established by adjusting the first symbol timing by the calculated timing adjustment amount. The adjusted symbol timing can be conveyed to one or more peer nodes, in order to facilitate timing synchronization among the nodes.
56 Citations
22 Claims
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1. A method of operating a first wireless communications terminal, the method comprising:
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determining an original symbol timing; receiving a first timing synchronization signal from at least a second wireless communications terminal; calculating a timing adjustment based in part on the first timing synchronization signal; determining an adjusted symbol timing by adjusting the original symbol timing by an amount determined by the calculated timing adjustment; and transmitting a second timing synchronization signal with the adjusted symbol timing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless communications apparatus, comprising:
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a memory that retains instructions related to ascertaining a first symbol timing, receiving a first timing synchronization signal, establishing a timing adjustment based in part on the received first timing synchronization signal, adjusting the first symbol timing as a function of the established timing adjustment, and conveying the adjusted symbol timing with a second timing synchronization signal; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A wireless communications apparatus that facilitates synchronization in a peer-to-peer communications network, comprising:
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means for establishing an original signal timing from a received timing reference signal; means for receiving a first timing synchronization signal from a peer; means for calculating a timing adjustment based on at least the first timing synchronization signal; means for adjusting the original signal timing by a determined adjustment amount; and means for transmitting the adjusted signal timing in a second timing synchronization signal. - View Dependent Claims (18, 19)
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20. A machine-readable medium having stored thereon machine-executable instructions for:
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establishing at a first device a first symbol timing; receiving a first timing synchronization symbol from a second device; calculating a timing adjustment based in part on the first timing synchronization symbol; determining an adjusted symbol timing by adjusting the first symbol timing by an amount determined by the calculated timing adjustment; and conveying a second timing synchronization symbol that includes the adjusted symbol timing. - View Dependent Claims (21)
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22. In a wireless communication system, an apparatus comprising:
a processor configured to; determine an original symbol timing based in part on a timing reference signal received from a network broadcast source; receive a first timing synchronization signal from at least a second wireless communications terminal; calculate a timing adjustment based in part on the first timing synchronization signal; determine an adjusted symbol timing by adjusting the original symbol timing by an amount determined by the calculated timing adjustment; and transmit a second timing synchronization signal with the adjusted symbol timing.
Specification