Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Reexamination Certificate
2007-09-11
2007-09-11
Rao, Seema S. (Department: 2616)
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
C370S237000
Reexamination Certificate
active
10454192
ABSTRACT:
A method for reducing communications in a peer-to-peer wireless network having nodes includes sending an RTS-TOA ranging communication from a first node (N0) in a node group to another node (Nr, I) in the group, receiving the RTS-TOA communication with the second node (Nr, I) and sending a multi-cast CTS-TOA/RTS-TOA ranging communication from the second node (Nr, I) as a reply to the received RTS-TOA communication, and successively and sequentially repeating the multi-cast sending step for each of the nodes. A CTS-TOA message is a reply to the received RTS-TOA message and, simultaneously, is an RTS-TOA ranging communication to a new destination node (J). The method applies for a randomized communications approach when node identifications are not sequenced and to a sequential approach where nodes are sequenced, and also applies to completely connected and multi-hop networks. Also provided is a node for carrying out the method of the present invention.
REFERENCES:
patent: 6453168 (2002-09-01), McCrady et al.
patent: 6768730 (2004-07-01), Whitehill
McCrady, D. D. et al.: “Mobile Ranging Using Low-Accuracy Clocks”, IEEE Transactions on Microwave Theory and Techniques, vol. 48, No. 6, Jun. 2000, pp. 951-957.
Huang Jian
Huang Yan
Kyperountas Spyros
Niu Feng
Motorola Inc.
Russell Wanda Z
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