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US 2008/0175165 A1Published application
Wireless communication system for calculating time of flight
AssigneeQuanta Computer Inc.
InventorKai-Wen Tien
Life of this patent
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Abstract
The invention discloses a wireless communication system for calculating time of flight. The system transmits and receives a plurality of packets every a plurality of delay times. Thereafter, the wireless communication system calculates a plurality of reference times according to the delay times and processing times and then averages the reference times to obtain the time of flight. Thereby, the time of flight can be calculated more accurately.
Claims16
A wireless communication system, comprising:
- a first communication module, after transmitting a first pilot, sequentially transmitting N first packets each with a first delay time, and after receiving a second pilot, sequentially transmitting N second packets each with a fourth delay time, each of the N first packets respectively corresponding to one of the N second packets, N being a natural number larger than 1, the first communication module spending a first processing time transmitting and receiving each packet;
- and
- a second communication module, after receiving the first pilot, sequentially receiving the N first packets each with a second delay time, and after transmitting the second pilot, sequentially transmitting the N second packets each with a third delay time, the second communication module spending a second processing time transmitting and receiving each packet;
- wherein, according to N first processing times, N second processing times, N first delay times, N second delay times, N third delay times, and N fourth delay times corresponding to the N first packets and the N second packets, the first communication module calculates N reference times and averages the N reference times to obtain a time of flight (TOF).
1 more element
A wireless communication system, comprising:
- a first communication module, sequentially transmitting N packets each with a first delay time, N being a natural number larger than 1, the first communication module spending a first processing time transmitting and receiving each packet;
- and
- a second communication module, sequentially receiving the N packets each with a second delay time, the second communication module spending a second processing time transmitting and receiving each packet;
- wherein, according to N first processing times, N second processing times, N first delay times, and N second delay times corresponding to the N packets, the first communication module calculates N reference times and averages the N reference times to obtain a time of flight (TOF).
1 more element
Dependencies are inferred from the claim text.