Methods, servers, mobile stations, and computer program products using GPS referenced time and delay information in messages for GPS time assistance
First Claim
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1. A method of providing Global Positioning System (GPS) time assistance to a mobile station comprising:
- transmitting a message from a networked GPS time server to a mobile station, the message including GPS referenced time information indicating an elapsed GPS referenced time interval at the networked GPS time server between receiving a request for GPS time assistance at the networked GPS time server and transmitting the message to the mobile station.
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Abstract
A message is transmitted from a networked GPS time server to a mobile station, the message includes GPS referenced time information indicating an elapsed GPS referenced time interval at the networked GPS time server between receiving a request for GPS time assistance at the networked GPS time server and transmitting the message to the mobile station.
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Citations
45 Claims
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1. A method of providing Global Positioning System (GPS) time assistance to a mobile station comprising:
transmitting a message from a networked GPS time server to a mobile station, the message including GPS referenced time information indicating an elapsed GPS referenced time interval at the networked GPS time server between receiving a request for GPS time assistance at the networked GPS time server and transmitting the message to the mobile station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of providing Global Positioning System (GPS) time assistance to a mobile station comprising:
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transmitting a request for GPS time assistance information from a mobile station to a networked GPS time server at a first mobile station referenced time;
receiving the request for GPS time assistance information at the networked GPS time server at a first GPS referenced time;
transmitting a single ICMP message from the networked GPS time server to the mobile station at a second GPS referenced time, the single ICMP message including at least the first and second GPS referenced times;
receiving the single ICMP message at the mobile station at a second mobile station referenced time; and
determining a current GPS referenced time at the mobile station based on the first and second GPS referenced times and the first and second mobile station referenced times. - View Dependent Claims (10, 11, 12, 13)
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14. A method of determining location information for a mobile station included in a wireless communications network comprising:
determining GPS referenced time at a mobile station derived from a single message from a networked GPS time server, the single message including GPS referenced time information and delay information associated with propagation of the message to the mobile station. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A networked server for providing Global Positioning System (GPS) time assistance comprising:
a networked GPS time server circuit configured to transmit a message to a mobile station via a network, the message including GPS referenced time information indicating an elapsed GPS referenced time interval at the networked GPS time server circuit between receiving a request for GPS time assistance at the networked GPS time server circuit and transmitting the message to the mobile station. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A networked server for providing Global Positioning System (GPS) time assistance comprising:
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a GPS time source configured to provide GPS referenced time information; and
an IP stack including an ICMP compliant protocol layer configured to request GPS referenced time information from the GPS time source responsive to ICMP time stamp request messages and configured to transmit ICMP time reply messages including the GPS referenced time information. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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39. A GPS enabled mobile station comprising:
a processor circuit configured to determine current GPS referenced time at a mobile station derived from a single message from a networked GPS time server, the single message including GPS referenced time information and delay information associated with propagation of the message to the mobile station. - View Dependent Claims (40, 41, 42, 43, 44, 45)
Specification