Method and apparatus for selecting a serving transceiver
First Claim
1. In a radio communication system having a plurality of transceivers, the transceivers having known locations, and at least one remote unit communicating a signal to a candidate transceiver, a method for selecting a serving transceiver for the remote unit comprising:
- a.) estimating the at least one remote unit'"'"'s location within the radio communication system in response to collected signal characteristics measured by a set of transceivers from the plurality of transceivers wherein estimating the at least one remote unit'"'"'s location further comprises;
(i) segregating those transceivers in the set of transceivers with respect to the candidate transceiver, into distance ranges, wherein transceivers segregated in any single range are a substantially similar distance from the candidate transceiver;
(ii) determining for each transceiver a per-transceiver likelihood contribution that the at least one remote unit is in the region of the transceiver in response to at least one of;
a distance range to which the transceiver was segregated, a number of transceivers within the distance range, a collected signal characteristic of the remote unit, and a predetermined RF propagation model associated with the distance ranges;
(iii) repeating steps (i-ii) above for any transceiver in the set; and
(iv) summing the per-transceiver likelihood contributions for each receiving transceiver to compute a metric for each transceiver;
b.) selecting the serving transceiver as a transceiver of the set of transceivers having the highest metric.
2 Assignments
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Accused Products
Abstract
A radio communication system selects a serving transceiver for a remote unit by generating and using a center of mass location estimation. The radio communication system collects uplink and downlink signal characteristics, including impaired signals caused by co-channel interference, from a set of transceivers, including those adjacent to and non-adjacent to the candidate transceiver and remote unit, to aid in the estimation of the remote unit'"'"'s location within the radio communication system. Using the uplink and downlink signal characteristics, the radio communication system determines weighted coordinates related to predetermined coordinates and the signal characteristics which are used to produce a first and second center of mass coordinate estimation. The radio communication system then selects the serving transceiver to be the transceiver whose predetermined coordinates are closest to the first and second center of mass coordinate estimation.
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Citations
10 Claims
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1. In a radio communication system having a plurality of transceivers, the transceivers having known locations, and at least one remote unit communicating a signal to a candidate transceiver, a method for selecting a serving transceiver for the remote unit comprising:
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a.) estimating the at least one remote unit'"'"'s location within the radio communication system in response to collected signal characteristics measured by a set of transceivers from the plurality of transceivers wherein estimating the at least one remote unit'"'"'s location further comprises; (i) segregating those transceivers in the set of transceivers with respect to the candidate transceiver, into distance ranges, wherein transceivers segregated in any single range are a substantially similar distance from the candidate transceiver; (ii) determining for each transceiver a per-transceiver likelihood contribution that the at least one remote unit is in the region of the transceiver in response to at least one of;
a distance range to which the transceiver was segregated, a number of transceivers within the distance range, a collected signal characteristic of the remote unit, and a predetermined RF propagation model associated with the distance ranges;(iii) repeating steps (i-ii) above for any transceiver in the set; and (iv) summing the per-transceiver likelihood contributions for each receiving transceiver to compute a metric for each transceiver; b.) selecting the serving transceiver as a transceiver of the set of transceivers having the highest metric. - View Dependent Claims (2, 3)
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4. In a radio communication system having a plurality of transceivers, the transceivers having known locations, and at least one remote unit communicating a signal to at least one of the plurality of transceivers, a method for selecting a serving transceiver for the remote unit comprising:
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a.) estimating the at least one remote unit'"'"'s location within the radio communication system in response to collected signal strength'"'"'s measured by a set of transceivers also receiving the communicated signal, wherein estimating the at least one remote unit'"'"'s location further comprises; (i) determining a relative signal arrival time delay with respect to each of the set of transceivers receiving the signal; and (ii) weighting both the relative signal arrival time and each transceiver'"'"'s known distance from at least another transceiver, in response to the collected signal strength'"'"'s received by each of the transceivers; and b. selecting the serving transceiver in response to the weighted relative signal arrival time delay and each transceiver'"'"'s known distance. - View Dependent Claims (5)
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6. In a radio communication system having a plurality of transceivers, the transceivers having known locations, and at least one remote unit communicating a signal to at least one of the plurality of transceivers, a control unit for selecting a serving transceiver for the remote unit comprising:
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a.) computing means for estimating the at least one remote unit'"'"'s location within the radio communication system in response to collected signal characteristics measured by a set of transceivers also receiving the communicated signal, wherein estimating the at least one remote unit'"'"'s location further comprises; (i) segregating those transceivers receiving the at least one remote unit'"'"'s communicated signal with respect to a candidate transceiver, into distance ranges, wherein the transceivers segregated in any single range are a substantially similar distance from the candidate transceiver; (ii) determining, for each transceiver receiving the remote unit'"'"'s communicated signal, a likelihood contribution that the at least one remote unit is in the region of the candidate transceiver in response to at least one of;
a distance range to which the receiving transceiver was segregated, a number of receiving transceivers in that distance range, the remote unit'"'"'s collected signal characteristics, and a predetermined RF propagation model associated with the distance ranges;(iii) repeating steps (i-ii) above for any candidate transceiver; and (iv) summing the per-transceiver likelihood contributions from at least two receiving transceivers to compute a metric for the candidate transceiver; b.) means, operably coupled to means for computing, for selecting the serving transceiver as the receiving transceiver having the highest metric. - View Dependent Claims (7, 8)
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9. In a radio communication system having a plurality of transceivers, each of the plurality of transceivers having known locations, and at least one remote unit communicating a signal to at least one of the plurality of transceivers, a control unit for selecting a serving transceiver for the remote unit comprising:
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a.) computing means for estimating the at least one remote unit'"'"'s location within the radio communication system in response to a collected signal strength measured by a set of transceivers also receiving the communicated signal, wherein estimating the at least one remote unit'"'"'s location further comprises; (i) determining a relative signal arrival time delay with respect to each of the set of transceivers receiving the signal; (ii) weighting both the relative signal arrival time and a known distance of each transceiver from at least another transceiver, in response to the collected signal strength received by each of the transceivers; and b. means, operably coupled to computing means, for selecting the serving transceiver in response to the weighted relative signal arrival time delay and each transceiver'"'"'s known distance. - View Dependent Claims (10)
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Specification