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 a set of geographical bin grid framework frame locations, the bin grid framework having a predetermined granularity;
determining a set of NodeB Site Pairs (NBSPs), the set of NBSPs comprising a first NodeB site and a second NodeB site, wherein the location of each NodeB site is known relative to the set of geographical bin grid framework frame locations;
determining a frame data value set of values corresponding to the set of geographical bin grid framework frame locations, the frame data value set, at least in part, comprising computed differential values for each NB SP of the set of NBSPs and the frames within a predetermined distance from each NBSP of the set of NBSPs, wherein each computed differential value is related, at least in part, to a difference between a location of a frame and the location of a NBSP;
accessing a time value for an idle-state UE in the network as OV(1);
determining a subset of NBSPs relative to the idle-state UE;
determining a lookup value based at least in part on OV(1),returning a first subset of frames for a search through the frame data value set, searching for frames correlated to the lookup value and a NBSP of the subset of NBSPs.
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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.
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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 a set of geographical bin grid framework frame locations, the bin grid framework having a predetermined granularity; determining a set of NodeB Site Pairs (NBSPs), the set of NBSPs comprising a first NodeB site and a second NodeB site, wherein the location of each NodeB site is known relative to the set of geographical bin grid framework frame locations; determining a frame data value set of values corresponding to the set of geographical bin grid framework frame locations, the frame data value set, at least in part, comprising computed differential values for each NB SP of the set of NBSPs and the frames within a predetermined distance from each NBSP of the set of NBSPs, wherein each computed differential value is related, at least in part, to a difference between a location of a frame and the location of a NBSP; accessing a time value for an idle-state UE in the network as OV(1); determining a subset of NBSPs relative to the idle-state UE; determining a lookup value based at least in part on OV(1), returning a first subset of frames for a search through the frame data value set, searching for frames correlated to the lookup value and a NBSP of the subset of NBSPs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for determining the location of a UE in a wireless network, the system comprising:
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a plurality of NodeBs comprising a set of NodeB Site Pairs (NBSPs) including at least one NBSP; at least one bin grid framework, with a predetermined level of granularity, mapped to a geographic area of the wireless network to facilitate locating UEs within particular frames based at least in part on UE time data; and a time fingerprint locating (TFL) platform that is communicatively coupled to a processor and memory storing at least a data set relating to differential frame values for at least one NBSP of the set of NBSPs, the TFL platform capable of accessing timing data related to an idle-state UE and capable of comparing the timing data to the stored data set correlated to a NBSP to facilitate determining the location of the idle-state UE within the wireless network. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification