| 摘要 |
The present invention provides a bandwidth efficient system and method of measuring the range between nodes ( 102, 106, 107 ) in a wireless communications network ( 100 ) with one-way data transfer, where each node ( 102, 106, 107 ) periodically transmits a message that contains information regarding neighboring nodes ( 102, 106, 107 ) from which any prior messages have been received by the transmitting node ( 102, 106, 107 ). A node ( 102, 106, 107 ) receives the messages transmitted from neighboring nodes ( 102, 106, 107 ) in the network ( 100 ), and records the times of arrival of the received messages. The node ( 102, 106, 107 ) receiving those messages can thus determine the respective distances between itself and the neighboring nodes ( 102, 106, 107 ) based on the respective time of arrivals of the received messages and the respective information included in the respective messages.
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