Sparsed U-TDOA Wireless Location Networks
First Claim
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1. An iterative method for designing a sparse wireless location system (WLS) from an initial network design, comprising:
- determining that an uplink demodulation performance limiting factor affects the initial network design; and
modifying the initial network design performing at least one of the following actions;
determining that communications system demodulation data is enabled, and enabling a demodulated data feature;
determining that communications system demodulation data is not enabled, and determining that an Abis monitoring system (AMS) is not deployed and enabling a mid-amble only correction feature;
determining that communications system demodulation data is not enabled, and determining that an Abis monitoring system (AMS) is deployed and enabling an AMS-derived demodulated data feature;
adding at least one location measuring unit (LMU) to the network design; and
adding at least one dedicated antenna facility to the network design.
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Abstract
In an overlay, U-TDOA-based, Wireless Location System, LMUs typically co-located with BTSs, are used to collect radio signaling both in the forward and reverse channels. Techniques are used to compensate for sparse LMU deployments where sections of the U-TDOA service area are uplink demodulation or downlink beacon discovery limited.
136 Citations
32 Claims
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1. An iterative method for designing a sparse wireless location system (WLS) from an initial network design, comprising:
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determining that an uplink demodulation performance limiting factor affects the initial network design; and modifying the initial network design performing at least one of the following actions; determining that communications system demodulation data is enabled, and enabling a demodulated data feature; determining that communications system demodulation data is not enabled, and determining that an Abis monitoring system (AMS) is not deployed and enabling a mid-amble only correction feature; determining that communications system demodulation data is not enabled, and determining that an Abis monitoring system (AMS) is deployed and enabling an AMS-derived demodulated data feature; adding at least one location measuring unit (LMU) to the network design; and adding at least one dedicated antenna facility to the network design. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A computer readable medium comprising computer readable instructions for carrying out a prescribed method for designing a sparse wireless location system (WLS) from an initial network design, said prescribed method comprising:
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determining that an uplink demodulation performance limiting factor affects the initial network design; and modifying the initial network design performing at least one of the following actions; determining that communications system demodulation data is enabled, and enabling a demodulated data feature; determining that communications system demodulation data is not enabled, and determining that an Abis monitoring system (AMS) is not deployed and enabling a mid-amble only correction feature; determining that communications system demodulation data is not enabled, and determining that an Abis monitoring system (AMS) is deployed and enabling an AMS-derived demodulated data feature; adding at least one location measuring unit (LMU) to the network design; and adding at least one dedicated antenna facility to the network design. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification