Timed fingerprint locating for idle-state user equipment in wireless networks
First Claim
1. A computer-readable storage device storing instructions that, in response to execution, cause a system comprising a processor to perform operations, comprising:
- receiving a first observed time value associated with wireless cellular radio links between a first pair of radios of a wireless network and a user equipment of the wireless network, wherein the user equipment is powered on and not in an active call session;
determining a first differential time value based on the first observed time value, a first reference observed time value, and a first reference differential time value; and
determining a location for the user equipment based on the first differential time value.
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Accused Products
Abstract
A user equipment (UE) location in a wireless network can be determined by leveraging geometric calculations for an overlaid bin grid framework mapping the wireless network area to store differential values for each frame of the bin grid framework for each pair of relevant NodeBs. A timing offset can be determined, such that when a time value from a target UE is accessed, the location can be quickly determined with minimal real time computation. In an aspect, the time value from an idle-state target UE can be accessed. The target UE time value can be searched among pre-computed differential value data sets indexed by relevant NodeB site pairs to return sets of frames that can facilitate converging on a location for the target UE. Intersecting frames can represent the geographic location of the UE in the wireless network. Further, the data can be leveraged to correct timing in the network.
124 Citations
20 Claims
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1. A computer-readable storage device storing instructions that, in response to execution, cause a system comprising a processor to perform operations, comprising:
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receiving a first observed time value associated with wireless cellular radio links between a first pair of radios of a wireless network and a user equipment of the wireless network, wherein the user equipment is powered on and not in an active call session; determining a first differential time value based on the first observed time value, a first reference observed time value, and a first reference differential time value; and determining a location for the user equipment based on the first differential time value. - View Dependent Claims (2, 3, 4)
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5. A method, comprising:
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receiving, by a system comprising a processor, a first observed time value associated with first radio links between a first pair of radios of a wireless network and a user equipment in the wireless network, wherein the user equipment is in an idle-state; determining, by the system, a first differential time value based on the first observed time value, a first reference observed time value, and a first reference differential time value; and determining, by the system, a location for the user equipment based on the first differential time value. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system, comprising:
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a memory to store instructions; and a processor, coupled to the memory, that facilitates execution of the instructions to perform operations, comprising; receiving a first observed time value associated with synchronization of radio links between a first pair of radios of a wireless network and a user equipment of the wireless network, wherein the user equipment is in an idle-mode; determining a first differential time value based on the first observed time value, a first reference observed time value, and a first reference differential time value, wherein the first reference observed time value and first reference differential time value are predetermined; and determining a location for the user equipment based on the first differential time value. - View Dependent Claims (19, 20)
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Specification