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US 6,571,082 B1Granted
Wireless field test simulator
AssigneeVerizon Laboratories Inc.
InventorsIftekhar Rahman, Nabil Hinnawi
Life of this patent
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AssigneeVerizon Laboratories Inc.
InventorsIftekhar Rahman, Nabil Hinnawi
Estimating the term…
A method and system for testing network-based location determination technologies within a single test area in the field. Channel models are developed to simulate the propagation impairment conditions associated with identified test scenarios. The channel models for an identified test scenario can be developed by estimating the amount of multi-path, path loss, and Doppler frequency shift effects one would expect under the conditions and environment of the identified tests scenario. The path loss effects of an identified scenario may be estimated by combining the Okumura-Hata outdoor path loss models with available indoor path loss models. A single test area having receiving antennas and signal transmission of fixed and known geographic locations may be selected. A network-based location determination technology can be comprehensively tested at the single test location, under propagation impairment conditions not naturally occurring there, by modifying the system's signals according to the channel models developed to simulate the propagation impairment conditions of identified test scenarios. Similarly, cellular, personal communication systems (PCS), and broadband wireless communications system may also be tested for the quality of the voice and data transmissions at a single test location.
A method of testing network-based location determination technologies within a single test area in the field comprising:
A method of testing network-based location determination technologies within a single test area in the field comprising:
A system for testing network-based location determination technologies within a single test area in the field comprising:
A system for testing network-based location determination technologies within a single test area in the field comprising:
A means for testing network-based location determination technologies within a single test area in the field comprising:
A method of testing a network-based location determination system to locate the source of a transmission signal comprising:
A method of testing a wireless communication system within a single test area in the field comprising:
Dependencies are inferred from the claim text.