Use of radio access technology diversity for location
First Claim
1. A method for locating a multi-mode mobile communications device in a wireless communications system employing a plurality of radio access technologies, wherein the wireless communications system supports a radio access technology handover mechanism, the method comprising:
- receiving first radio signal information from the multi-mode mobile communications device at a first group of sensor stations using a first radio access technology;
causing a handover of the multi-mode mobile communications device to a second group of sensor stations;
receiving second radio signal information from the multi-mode mobile communications device at the second group of sensor stations using a second radio access technology; and
determining a combined location estimate as a function of said first and second radio signal information.
2 Assignments
0 Petitions
Accused Products
Abstract
Various aspects are disclosed herein for determining a location estimate for multi-mode mobile devices using measurements from one or more radio access technologies and providing a combined location solution. Using the multiple radio access technology capability of the wireless communications system, a mobile communications device may be located on a first radio network characterized by a first radio modulation technique, radio network topology, and channel bandwidth. The mobile communications device may then be handed off to a second radio network and located using a second radio network characterized by a second radio modulation technique, radio network topology, and channel bandwidth. The two location estimates may then be used to develop a combined location estimate.
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Citations
117 Claims
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1. A method for locating a multi-mode mobile communications device in a wireless communications system employing a plurality of radio access technologies, wherein the wireless communications system supports a radio access technology handover mechanism, the method comprising:
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receiving first radio signal information from the multi-mode mobile communications device at a first group of sensor stations using a first radio access technology; causing a handover of the multi-mode mobile communications device to a second group of sensor stations; receiving second radio signal information from the multi-mode mobile communications device at the second group of sensor stations using a second radio access technology; and determining a combined location estimate as a function of said first and second radio signal information. - 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)
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28. A system for locating a multi-mode mobile communications device, comprising:
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a first group of sensor stations using a first radio access technology and configured to receive first radio signal information from a multi-mode mobile communications device using the first radio access technology; a second group of sensor stations using a second radio access technology and configured to receive second radio signal information from the multi-mode mobile communications device using the second radio access technology, wherein said first and second groups may comprise common sensor stations; a first subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor to implement a radio access technology handover mechanism; a second subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor in performing the following steps; receiving said first radio signal information; transmitting a request for a radio access technology handover; receiving said second radio signal information; and determining a combined location estimate as a function of said first and second radio signal information. - View Dependent Claims (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 multi-mode mobile communications device in a wireless communications system employing a plurality of radio access technologies, wherein the wireless communications system supports a radio access technology handover mechanism, the method comprising:
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receiving first radio signal information, wherein said first radio signal information is received from the multi-mode mobile communications device at a first group of sensor stations using a first radio access technology; transmitting a message indicating a request for a handover of the multi-mode mobile communications device to a second group of sensor stations; receiving second radio signal information, wherein said second radio signal information is received from the multi-mode mobile communications device at the second group of sensor stations using a second radio access technology, wherein said first and second groups may comprise common sensor stations; and determining a combined location estimate as a function of said first and second radio signal information. - 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)
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79. A system for locating a multi-mode mobile communications device in a wireless communications network employing a plurality of radio access technologies, wherein the wireless communications network supports a radio access technology handover mechanism, the system comprising:
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a first group of sensor stations associated with a first radio access technology; a second group of sensor stations associated with a second radio access technology, wherein said first and second groups may comprise common sensor stations; a subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor in performing the following steps; receiving first radio signal information, wherein said first radio signal information is received from the multi-mode mobile communications device at the first group of sensor stations; transmitting a message indicating a request for a handover of the multi-mode mobile communications device to the second group of sensor stations; receiving second radio signal information, wherein said second radio signal information is received from the multi-mode mobile communications device at the second group of sensor stations; and determining a combined location estimate as a function of said first and second radio signal information. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102)
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103. A system for locating a multi-mode mobile communications device capable of operating in a network providing both Universal Mobile Telecommunications System (UMTS) and Global System for Mobile Communications (GSM) services, wherein the network further implements an Inter-Radio Access Technologies (Inter-RAT) handover/redirection mechanism, comprising:
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a first group of sensor stations configured to receive radio signal information from the multi-mode mobile communications device using UMTS; a second group of sensor stations configured to configured to receive radio signal information from the multi-mode mobile communications device using GSM; a subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor in performing the following steps; receiving first radio signal information from one of the first or second groups of sensor stations; transmitting a request for an Inter-RAT handover or redirection; receiving second radio signal information from one of the first or second groups of sensor stations; and determining a combined location estimate as a function of said first and second radio signal information. - View Dependent Claims (104, 105, 106, 107, 108, 109, 110, 111, 112)
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113. A method for locating a multi-mode mobile communications device in a wireless communications system employing a plurality of radio access technologies, wherein the wireless communications system supports a radio access technology handover mechanism, the method comprising:
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receiving first radio signal information from the multi-mode mobile communications device at a first group of sensor stations using a first radio access technology; determining a first probable position of the multi-mode mobile communications device based on analysis of said first radio signal information; causing a handover of the multi-mode mobile communications device to a second group of sensor stations; receiving second radio signal information from the multi-mode mobile communications device at the second group of sensor stations using a second radio access technology; determining a second probable position of the multi-mode mobile communications device based on analysis of said second radio signal information; and determining a combined location estimate as a function of said first and second probable positions.
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114. A system for locating a multi-mode mobile communications device, comprising:
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a first group of sensor stations using a first radio access technology and configured to receive first radio signal information from a multi-mode mobile communications device using the first radio access technology; a second group of sensor stations using a second radio access technology and configured to receive second radio signal information from the multi-mode mobile communications device using the second radio access technology, wherein said first and second groups may comprise common sensor stations; a first subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor to implement a radio access technology handover mechanism; a second subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor in performing the following steps; receiving said first radio signal information; transmitting a request for a radio access technology handover; receiving said second radio signal information; determining a first probable position of the multi-mode mobile communications device based on analysis of said first radio signal information; determining a second probable position of the multi-mode mobile communications device based on analysis of said second radio signal information; and determining a combined location estimate as a function of said first and second probable positions.
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115. A method for locating a multi-mode mobile communications device in a wireless communications system employing a plurality of radio access technologies, wherein the wireless communications system supports a radio access technology handover mechanism, the method comprising:
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receiving first radio signal information, wherein said first radio signal information is received from the multi-mode mobile communications device at a first group of sensor stations using a first radio access technology; determining a first probable position of the mobile communications device based on analysis of said first radio signal information; transmitting a message indicating a request for a handover of the multi-mode mobile communications device to a second group of sensor stations; receiving second radio signal information, wherein said second radio signal information is received from the multi-mode mobile communications device at the second group of sensor stations using a second radio access technology, wherein said first and second groups may comprise common sensor stations; determining a second probable position of the multi-mode mobile communications device based on analysis of said second radio signal information; and determining a combined location estimate as a function of said first and second probable positions.
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116. A system for locating a multi-mode mobile communications device in a wireless communications network employing a plurality of radio access technologies, wherein the wireless communications network supports a radio access technology handover mechanism, the system comprising:
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a first group of sensor stations associated with a first radio access technology; a second group of sensor stations associated with a second radio access technology, wherein said first and second groups may comprise common sensor stations; a subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor in performing the following steps; receiving first radio signal information, wherein said first radio signal information is received from the multi-mode mobile communications device at the first group of sensor stations; determining a first probable position of the mobile communications device based on analysis of said first radio signal information; transmitting a message indicating a request for a handover of the multi-mode mobile communications device to the second group of sensor stations; receiving second radio signal information, wherein said second radio signal information is received from the multi-mode mobile communications device at the second group of sensor stations; determining a second probable position of the multi-mode mobile communications device based on analysis of said second radio signal information; and determining a combined location estimate as a function of said first and second probable positions.
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117. A system for locating a multi-mode mobile communications device capable of operating in a network providing both Universal Mobile Telecommunications System (UMTS) and Global System for Mobile Communications (GSM) services, wherein the network further implements an Inter-Radio Access Technologies (Inter-RAT) handover/redirection mechanism, comprising:
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a first group of sensor stations configured to receive radio signal information from the multi-mode mobile communications device using UMTS; a second group of sensor stations configured to configured to receive radio signal information from the multi-mode mobile communications device using GSM; a subsystem comprising at least one processor and at least one storage medium communicatively coupled to said at least one processor, the storage medium having stored therein computer-executable instructions for instructing the processor in performing the following steps; receiving first radio signal information from one of the first or second groups of sensor stations; transmitting a request for an Inter-RAT handover or redirection; receiving second radio signal information from one of the first or second groups of sensor stations; determining a first probable position of the multi-mode mobile communications device based on analysis of said first radio signal information; determining a second probable position of the multi-mode mobile communications device based on analysis of said second radio signal information; and determining a combined location estimate as a function of said first and second probable positions.
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Specification