System and method for efficiently performing two-way ranging to determine the location of a wireless node in a communications network
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United States of America Patent
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Jul 27, 2004
Grant Date -
N/A
app pub date -
Oct 11, 2001
filing date -
Oct 11, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method for reducing the number of transmissions required for a node in a communications network to range other nodes in the network, while also enabling the node to continuously monitor the reservation channel during the ranging process without the use of a second receiver, and to indicate to the ranged node and other nodes in the network that the ranging node and the ranged node are not tuning to a data channel to perform the ranging, to thus enable the node to more efficiently determine its geographic location. The system and method further enables a node in a wireless communications network to minimize the amount of time it is not monitoring the reservation channel while receiving information messages from other nodes in the network.
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