User plane uplink time difference of arrival (U-TDOA)
First Claim
1. A system for locating a mobile wireless device configured to communicate with a wireless communications system via a control plane and a user plane, wherein the user plane comprises a data channel, comprising:
- a wireless location system (WLS) comprising a plurality of location measuring units (LMUs) configured to be tasked to receive uplink transmissions from the wireless device and to employ algorithms to locate said wireless device using data derived from received uplink transmissions, wherein said WLS is overlaid on said wireless communications system;
a server configured to communicate with said WLS and to communicate via a user plane data channel with a wireless device to be located, and to obtain from said wireless device, via said user plane data channel, information useful for tasking said WLS, wherein said user plane data channel comprises an Internet Protocol (IP) link carried by a user plane of the wireless communications system;
wherein said information useful for tasking includes the following;
a hop pattern being used by the wireless device; and
information useful for at least partially demodulating a signal from the wireless device to extract control signaling and error coding;
wherein said server is further configured to communicate said information useful for tasking to the WLS.
2 Assignments
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Accused Products
Abstract
A system for locating a mobile wireless device is configured to communicate with a wireless communications system via a control plane and a user plane. The user plane includes a data channel, and the system includes a server configured to communicate via the data channel with a wireless device to be located. The server obtains from the wireless device information useful for tasking the wireless location system. The information useful for tasking may include information indicative of at least one cell site neighboring a serving cell site with which the wireless device is communicating. This may include information indicative of a serving cell site, a reverse channel through which the wireless device is communicating, and/or a hopping pattern, etc. The system may be used, for example, in connection with a GSM or UMTS wireless communications system.
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Citations
208 Claims
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1. A system for locating a mobile wireless device configured to communicate with a wireless communications system via a control plane and a user plane, wherein the user plane comprises a data channel, comprising:
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a wireless location system (WLS) comprising a plurality of location measuring units (LMUs) configured to be tasked to receive uplink transmissions from the wireless device and to employ algorithms to locate said wireless device using data derived from received uplink transmissions, wherein said WLS is overlaid on said wireless communications system; a server configured to communicate with said WLS and to communicate via a user plane data channel with a wireless device to be located, and to obtain from said wireless device, via said user plane data channel, information useful for tasking said WLS, wherein said user plane data channel comprises an Internet Protocol (IP) link carried by a user plane of the wireless communications system; wherein said information useful for tasking includes the following; a hop pattern being used by the wireless device; and information useful for at least partially demodulating a signal from the wireless device to extract control signaling and error coding; wherein said server is further configured to communicate said information useful for tasking to the WLS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A method for locating a mobile wireless device configured to communicate with a wireless communications system via a control plane and a user plane, wherein the user plane comprises a data channel, comprising:
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configuring a server to communicate via the user plane data channel with a wireless device, wherein said user plane data channel comprises an Internet Protocol (IP) link carried by the user plane of the wireless communications system; obtaining from said wireless device information useful for tasking a wireless location system, wherein said information useful for tasking includes the following; information indicative of a serving cell site with which the wireless device is communicating; information indicative of at least one cell site neighboring the serving cell site; radio channel information including information identifying a reverse channel through which the wireless device is communicating with the serving cell site; information indicative of a hop pattern; and information useful for at least partially demodulating a signal from the wireless device to extract control signaling and error coding; and tasking said wireless location system using the information obtained from said wireless device. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109)
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110. A non-transitory computer readable medium comprising computer readable instructions for instructing a location enabling server (LES) in performing a method for locating a mobile wireless device configured to communicate with a wireless communications system via a control plane and a user plane, wherein the user plane comprises a data channel, said method comprising:
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configuring said LES to communicate via said user plane data channel with a wireless device, wherein said user plane data channel comprises an Internet Protocol (IP) link carried by a user plane of the wireless communications system; obtaining from said wireless device information useful for tasking a wireless location system, wherein said information useful for tasking includes the following; information indicative of a serving cell site with which the wireless device is communicating, information indicative of at least one cell site neighboring the serving cell site, radio channel information including information identifying a reverse channel through which the wireless device is communicating with the serving cell site, information indicative of a hop pattern, and information useful for at least partially demodulating a signal from the wireless device to extract control signaling and error coding; and tasking said wireless location system using the information obtained from said wireless device. - View Dependent Claims (111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156)
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157. A wireless device adapted for use with a system for locating mobile wireless devices configured to communicate with a wireless communications system via a control plane and a user plane, wherein the user plane comprises a user plane data channel, comprising:
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a wireless communications subsystem; a processor; and a computer readable storage medium; wherein said device is configured to communicate via said user plane data channel with a server used by said system to provide to said server information useful for tasking a wireless location system, wherein said user plane data channel comprises an Internet Protocol (IP) link carried by the user plane of the wireless communications system; wherein said information useful for tasking includes the following; information indicative of a serving cell site with which the wireless device is communicating; information indicative of at least one cell site neighboring the serving cell site; radio information including information identifying a reverse channel through which the wireless device is communicating with the serving cell site; information indicative of a hop pattern; and information useful for at least partially demodulating a signal from the wireless device to extract control signaling and error coding. - View Dependent Claims (158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208)
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Specification