Timed fingerprint locating for idle-state user equipment in wireless networks
First Claim
1. A method facilitating locating a user equipment (UE) in a wireless network, the method comprising:
- determining, by a system including at least one processor, a set of geographical frame locations for a bin grid framework, the bin grid framework having a predetermined granularity;
determining, by the system, a set of NodeB site pairs (NBSPs) comprising a first NodeB site and a second NodeB site, wherein locations of the first NodeB site and the second NodeB site are known;
determining, by the system, a set of reference frames, wherein the set of NodeB site pairs respectively have at least one reference frame having a known location;
determining, by the system, a frame data value set comprising computed differential values for the set of NodeB site pairs and sets of frames within a predetermined distance from NodeB site pairs, wherein the computed differential values are related, at least in part, to respective differences between respective locations of respective frames of the sets of frames and locations of a relevant NodeB site pair, wherein the relevant NodeB site pair is a NodeB site pair within the predetermined distance;
accessing, by the system, a first time value (OV(1)) for an idle-state UE;
determining, by the system, a first differential value (DV(1)) for a first frame of the sets of frames, related, at least in part, to a difference between location information of the first frame and location information of a first NodeB site pair of the set of NodeB site pairs;
accessing, by the system, a second time value (OV(2)) for the first frame;
determining a lookup value based at least in part on OV(1), DV(1), and OV(2); and
accessing, by the system, a first subset of frames for a search through the frame data value set, the accessing including searching for frames correlated to the lookup value and a NodeB site pair of the set of NodeB site pairs.
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Abstract
Systems and techniques for determining the location of user equipment (UE) in a wireless network are disclosed. These techniques leverage 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.
130 Citations
20 Claims
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1. A method facilitating locating a user equipment (UE) in a wireless network, the method comprising:
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determining, by a system including at least one processor, a set of geographical frame locations for a bin grid framework, the bin grid framework having a predetermined granularity; determining, by the system, a set of NodeB site pairs (NBSPs) comprising a first NodeB site and a second NodeB site, wherein locations of the first NodeB site and the second NodeB site are known; determining, by the system, a set of reference frames, wherein the set of NodeB site pairs respectively have at least one reference frame having a known location; determining, by the system, a frame data value set comprising computed differential values for the set of NodeB site pairs and sets of frames within a predetermined distance from NodeB site pairs, wherein the computed differential values are related, at least in part, to respective differences between respective locations of respective frames of the sets of frames and locations of a relevant NodeB site pair, wherein the relevant NodeB site pair is a NodeB site pair within the predetermined distance; accessing, by the system, a first time value (OV(1)) for an idle-state UE; determining, by the system, a first differential value (DV(1)) for a first frame of the sets of frames, related, at least in part, to a difference between location information of the first frame and location information of a first NodeB site pair of the set of NodeB site pairs; accessing, by the system, a second time value (OV(2)) for the first frame; determining a lookup value based at least in part on OV(1), DV(1), and OV(2); and accessing, by the system, a first subset of frames for a search through the frame data value set, the accessing including searching for frames correlated to the lookup value and a NodeB site pair of the set of NodeB site pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system to facilitate locating an idle-state user equipment (UE) in a wireless network, the system comprising:
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at least one memory that stores computer-executable instructions; at least one processor, communicatively coupled to the at least one memory, that facilitates execution of the computer-executable instructions to at least; communicatively couple to a plurality of NodeBs; store a data set relating to differential frame values for at least one NodeB site pair of the plurality of NodeBs; access timing data relating to the idle-state UE; compare the timing data to at least a subset of the data set relating to the at least one NodeB site pair to facilitate a determination of a location of the idle-state UE within the wireless network, wherein at least one bin grid framework, with a predetermined level of granularity, is mapped to a geographic area of the wireless network to facilitate location of idle-state UEs within frames of the at least one bin grid framework based, at least in part, on idle-state UE timing data. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification