METHOD AND APPARATUS FOR DETERMINING PROPAGATION DELAY
First Claim
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1. A method of determining a propagation delay of wireless communications between wireless network devices, comprising:
- exchanging first and second messages with a wireless network device;
determining first time information based upon the exchange of the first and second messages;
receiving second time information from the wireless network device, the second time information based upon the exchange of the first and second messages; and
determining a propagation delay based upon the first and second time information.
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Abstract
Embodiments of the present invention provide a method of determining a propagation delay of wireless communications between wireless network devices, comprising exchanging first and second messages with a wireless network device; determining first time information based upon the exchange of the first and second messages; receiving second time information from the wireless network device, the second time information based upon the exchange of the first and second messages; and determining a propagation delay based upon the first and second time information.
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Citations
20 Claims
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1. A method of determining a propagation delay of wireless communications between wireless network devices, comprising:
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exchanging first and second messages with a wireless network device; determining first time information based upon the exchange of the first and second messages; receiving second time information from the wireless network device, the second time information based upon the exchange of the first and second messages; and determining a propagation delay based upon the first and second time information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless network device, comprising:
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means for wirelessly exchanging first and second messages with another wireless network device; and means for determining a first time period based upon the exchange of first and second messages; and means for determining a propagation delay based upon the first time period and information indicative of a second time period received from the other wireless network device. - View Dependent Claims (9, 10, 11, 12)
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13. A wireless network, comprising:
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a first node arranged to wirelessly exchange first and second communications with a second node; wherein the first node is arranged to determine first time information based upon the exchange of the first and second communications; the second node is arranged to determine second time information based upon the first and second communications and to transmit a third communication to the first node containing the second time information; and the first node is arranged to determine a propagation delay between the first and second nodes according to the first and second time information. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification