LTE FINGERPRINTING POSITIONING REFERENCES FOR OTHER CELLULAR SYSTEMS
First Claim
1. A method of providing fingerprinted position estimates by a UE in an LTE wireless communication network to one or more other wireless communication networks, comprising:
- receiving signals from a plurality of transmitters in the LTE network;
performing OTDOA positioning measurements from the received signals;
obtaining an estimate of the UE position based on the OTDOA measurements;
performing inter-RAT measurements on at least one of a WCDMA network and GSM network;
transmitting the UE position estimate based on the OTDOA measurements, and one or more associated inter-RAT measurements, to the WCDMA/GSM network(s) on which the inter-RAT measurements were performed.
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Accused Products
Abstract
High precision UE position estimates derived by OTDOA positioning in an LTE network are provided to other networks (e.g., WCDMA and/or GSM), along with inter-RAT measurements performed on the other networks, to support fingerprinted positioning databases in the other networks. Signaling is provided enabling LTE UE position estimates to be used as reference points in the fingerprinting database in each of GSM control plane AECID positioning, GSM user plane AECID positioning, WCDMA control plane AECID positioning, and WCDMA user plane AECID positioning. In support thereof, inter-RAT measurement supporting the population of databases in WCDMA and GSM, using fingerprints and reference measurements in LTE; the use of OTDOA positioning to generate the LTE UE position estimates, and the required signaling are disclosed. The AECID databases in WCDMA and GSM networks do not have own-network serving cells at the top hierarchical level, since the inter-RAT measurements are performed in LTE.
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Citations
24 Claims
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1. A method of providing fingerprinted position estimates by a UE in an LTE wireless communication network to one or more other wireless communication networks, comprising:
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receiving signals from a plurality of transmitters in the LTE network; performing OTDOA positioning measurements from the received signals; obtaining an estimate of the UE position based on the OTDOA measurements; performing inter-RAT measurements on at least one of a WCDMA network and GSM network; transmitting the UE position estimate based on the OTDOA measurements, and one or more associated inter-RAT measurements, to the WCDMA/GSM network(s) on which the inter-RAT measurements were performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of populating an Adaptive Enhanced Cell ID (AECID) database in one of a WCDMA or GSM wireless communication network, comprising:
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obtaining from a UE connected to an LTE wireless network, a UE position estimate based on OTDOA measurements in the LTE network and one or more inter-RAT measurements performed on the WCDMA or GSM wireless communication network; and entering the UE position estimate, fingerprinted by the inter-RAT measurement(s), into an AECID database. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A user equipment (UE) comprising:
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a first transceiver rendering the UE operative in an LTE network; at least one of a second transceiver rendering the UE operative in a WCDMA network and a third transceiver rendering the UE operative in a GSM network; and a controller operative to cause the UE to perform OTDOA measurements in the LTE network and inter-RAT measurements in at least one of the WCDMA network and GSM network. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification