Method of quality-based frequency hopping in a wirelesscommunication system
First Claim
1. A method in a wireless communications system that hops a transmission frequency of a channel from frequency to frequency after transmitting for a dwell interval at successive frequencies, the method comprising the step of:
- hopping from a current frequency to a next frequency when triggered to do so when the value of at least one metric associated with a channel quality indicates that the channel quality at the current frequency is degraded to a predetermined level, wherein the dwell interval for each frequency hop may vary from hop to hop.
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Abstract
In a wireless communications system which hops from frequency to frequency, rather than hopping according to a fixed dwell interval and a pre-determined pseudo-random hop sequence, a quality-based frequency hopping methodology is defined in which a new frequency is hopped to when the channel quality on the current frequency degrades based on the measured value or values of one or more predetermined metrics that are associated with channel quality. When triggered to hop to a next frequency, the hop-to-frequency may be the next frequency in the pseudo-random hop sequence known to both the transmitter and receiver or, in order to improve the reliability of communications, may be determined based on channel quality measurements on different potential hop-to-frequencies.
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Citations
17 Claims
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1. A method in a wireless communications system that hops a transmission frequency of a channel from frequency to frequency after transmitting for a dwell interval at successive frequencies, the method comprising the step of:
hopping from a current frequency to a next frequency when triggered to do so when the value of at least one metric associated with a channel quality indicates that the channel quality at the current frequency is degraded to a predetermined level, wherein the dwell interval for each frequency hop may vary from hop to hop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
Specification