METHODS AND SYSTEMS FOR TESTING CELL PHONES WITH MULTIPLE ANTENNAS
First Claim
Patent Images
1. A system used to test a cell phone that uses multiple cell phone antennas, including:
- at least one signal feed adapted to be coupled to the cell phone at a location that bypasses the cell phone antennas;
at least one memory; and
one or more channel generator modules running on one or more processors, coupled to the signal feed and the memory, wherein each channel generator moduleuses at least three correlation data sets stored in the memory to emulate different channel conditions of a propagation channel model (abbreviated “
PCM”
), the different channel conditions representing time-varying physical relationships between multiple base station antennas and the multiple cell phone antennas; and
conditions a test signal with the different channel conditions and passes the conditioned test signal to the signal feed; and
a measurement module running on one or more of the processors, coupled to the signal feed, that measures response of the cell phone to the conditioned test signal.
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Abstract
The present invention relates to testing cell phones that simulates network conditions. In particular, it relates to new testing capabilities for simulating changes in correlation characteristics of signal components delivered to a cell phone. Correlation characteristics express changing environmental conditions and physical relationships among antennas in the cell phone and at base stations.
47 Citations
25 Claims
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1. A system used to test a cell phone that uses multiple cell phone antennas, including:
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at least one signal feed adapted to be coupled to the cell phone at a location that bypasses the cell phone antennas; at least one memory; and one or more channel generator modules running on one or more processors, coupled to the signal feed and the memory, wherein each channel generator module uses at least three correlation data sets stored in the memory to emulate different channel conditions of a propagation channel model (abbreviated “
PCM”
), the different channel conditions representing time-varying physical relationships between multiple base station antennas and the multiple cell phone antennas; andconditions a test signal with the different channel conditions and passes the conditioned test signal to the signal feed; and a measurement module running on one or more of the processors, coupled to the signal feed, that measures response of the cell phone to the conditioned test signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of testing new cell phone designs that use multiple cell phone antennas, including:
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coupling at least one signal feed to a cell phone at a location that bypasses the cell phone antennas; and conducting a test using one or more channel generator modules running on one or more processors, including using at least three correlation data sets stored in memory to emulate different channel conditions of a propagation channel model (abbreviated “
PCMs”
), the different channel conditions representing time-varying physical relationships between multiple base station antennas and the multiple cell phone antennas; andapplying each the different channel conditions to a test signal that is fed to the cell phone on the signal feed; and measuring response of the cell phone to the different channel conditions. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification