Communication system with detection of extra-system interference
First Claim
1. A method of communication between at least two terminals (6, 7) with detection of interference, comprising transmitting data between said terminals (6, 7) in electromagnetic signals of at least a first duration, said electromagnetic signals comprising one or more carrier frequencies within one or more ranges (1, 2) for which extra-system interference is possible, at least one of said terminals (6, 7) being responsive to received signal strengths corresponding to intra-system interference (4, 17, 18), characterised in that detection of extra-system interference (5, 16) comprises at least one of said terminals (6, 7) responding selectively to received signal strengths that exceed a threshold level (19) for a second duration that is shorter than said first duration.
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Accused Products
Abstract
A method of communication between two or more terminals (6, 7) with detection of interference, especially in a HiperLAN/2 system, comprising transmitting data between the terminals (6, 7) in electromagnetic signals of at least a first duration, the electromagnetic signals comprising one or more carrier frequencies within one or more ranges (1, 2) for which extra-system interference, especially with radar signals, is possible, at least one of the terminals (6, 7) being responsive to received signal strengths corresponding to intra-system interference (4, 17, 18). Detection of extra-system interference (5, 16) comprises at least one of the terminals (6, 7) responding selectively to received signal strengths that exceed a threshold level (19) for a second duration that is shorter than the first duration.
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Citations
19 Claims
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1. A method of communication between at least two terminals (6, 7) with detection of interference, comprising transmitting data between said terminals (6, 7) in electromagnetic signals of at least a first duration, said electromagnetic signals comprising one or more carrier frequencies within one or more ranges (1, 2) for which extra-system interference is possible, at least one of said terminals (6, 7) being responsive to received signal strengths corresponding to intra-system interference (4, 17, 18),
characterised in that detection of extra-system interference (5, 16) comprises at least one of said terminals (6, 7) responding selectively to received signal strengths that exceed a threshold level (19) for a second duration that is shorter than said first duration.
Specification