Dynamic slave frequency selection for improving uplink frequency hopping wireless communications
First Claim
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1. A method of controlling frequency hopping wireless communication between first and second frequency hopping wireless communication devices, comprising:
- the first device obtaining quality measurements respectively associated with frequencies that have been previously used by the second device to transmit information to the first device via a wireless communication link;
the first device selecting, based on the quality measurements, one of the frequencies for transmission of a selected upcoming communication from the first device to the second device;
the first device transmitting to the second device via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication; and
the second device transmitting information to the first device on the frequency selected by the first device if the second device received the transmission from the first device indicating the frequency selected for transmission of the communication and a frequency selected by the second device if the second device did not receive the transmission from the first device indicating the frequency selected for transmission.
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Abstract
In wireless communications between a frequency hopping master device (M) and a frequency hopping slave device (S1), the slave-to-master transmission frequency can be dynamically selected from a plurality of previous master-to-slave transmission frequencies (33) based on quality measures of those master-to-slave frequencies.
24 Citations
35 Claims
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1. A method of controlling frequency hopping wireless communication between first and second frequency hopping wireless communication devices, comprising:
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the first device obtaining quality measurements respectively associated with frequencies that have been previously used by the second device to transmit information to the first device via a wireless communication link; the first device selecting, based on the quality measurements, one of the frequencies for transmission of a selected upcoming communication from the first device to the second device; the first device transmitting to the second device via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication; and the second device transmitting information to the first device on the frequency selected by the first device if the second device received the transmission from the first device indicating the frequency selected for transmission of the communication and a frequency selected by the second device if the second device did not receive the transmission from the first device indicating the frequency selected for transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling frequency hopping wireless communication between first and second frequency hopping wireless communication devices, comprising:
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the first device obtaining quality measurements respectively associated with frequencies that have been previously used by the second device to transmit information to the first device via a wireless communication link; the first device selecting, based on the quality measurements, one of the frequencies for transmission of a selected upcoming communication from the first device to the second device; and the first device transmitting to the second device via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication and the second device transmitting to the first device via the wireless communication link a request for the first device to transmit the selected communication on a frequency other than the frequency selected by the first device for transmission of the selected communication. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of controlling frequency hopping wireless communication between first and second frequency hopping wireless communication devices, comprising:
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the first device obtaining quality measurements respectively associated with frequencies that have been previously used by the second device to transmit information to the first device via a wireless communication link; the first device selecting, based on the quality measurements, one of the frequencies for transmission of a selected upcoming communication from the first device to the second device; the first device transmitting to the second device via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication; and the second device determining that a first frequency of a frequency hopping pattern associated with transmissions by the second device is better than a second frequency of the frequency hopping pattern for transmission of a further selected communication from the second device to the first device via the wireless communication link, wherein the second frequency is specified by the frequency hopping pattern for the further selected communication and the first frequency is specified by the frequency hopping pattern for a communication from the second device to the first device that most closely precedes the further selected communication and, responsive to said determining step, the second device using said most closely preceding communication and the first frequency to inform the first device that the second device will deviate from the frequency hopping pattern and use the first frequency for transmission of the further selected communication instead of the second frequency and, responsive to said informing step, the first device receiving the further selected communication via the wireless communication link on the first frequency. - View Dependent Claims (16, 17)
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18. A frequency hopping wireless communication apparatus, comprising:
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a frequency selector having an input for receiving quality measurements associated with frequencies that have been previously used to receive, via a wireless communication link, information transmitted by a further frequency hopping wireless communication apparatus, said frequency selector operable for selecting, based on said quality measurements, one of said frequencies for transmission of a selected upcoming communication to the further apparatus; and a wireless communication interface coupled to said frequency selector for transmitting to the further apparatus via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication and for receiving information transmitted to said wireless communication apparatus via the selected frequency, if the further apparatus received the transmission from the wireless communication apparatus indicating the frequency selected for transmission of the communication, and a frequency selected by the further apparatus if the further apparatus did not receive the transmission from the wireless communication apparatus indicating the frequency selected for transmission of the communication. - View Dependent Claims (19, 20, 21, 22, 23)
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24. A frequency hopping wireless communication apparatus, comprising:
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a frequency selector having an input for receiving quality measurements associated with frequencies that have been previously used to receive, via a wireless communication link, information transmitted by a further frequency hopping wireless communication apparatus, said frequency selector operable for selecting, based on said quality measurements, one of said frequencies for transmission of a selected upcoming communication to the further apparatus; and a wireless communication interface coupled to said frequency selector for transmitting to the further apparatus via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication and operable for receiving from the further apparatus via the wireless communication link a request to transmit the selected communication on a frequency other than the frequency that has been selected for transmission of the selected communication. - View Dependent Claims (25, 26, 27)
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28. A frequency hopping wireless communication apparatus, comprising:
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a frequency selector having an input for receiving quality measurements associated with frequencies that have been previously used to receive, via a wireless communication link, information transmitted by a further frequency hopping wireless communication apparatus, said frequency selector operable for selecting, based on said quality measurements, one of said frequencies for transmission of a selected upcoming communication to the further apparatus; a wireless communication interface coupled to said frequency selector for transmitting to the further apparatus via the wireless communication link information indicative of the frequency that has been selected for transmission of the selected communication, wherein said wireless communication interface is further for receiving from the further apparatus via the wireless communication link information indicative of a determination by the further apparatus that a first frequency of a frequency hopping pattern associated with transmissions by the further apparatus is better than a second frequency of the frequency hopping pattern for transmitting a further selected communication from the further apparatus to said apparatus via the wireless communication link, wherein the second frequency is specified by the frequency hopping pattern for the further selected communication and the first frequency is specified by the frequency hopping pattern for a communication from the further apparatus to said apparatus that most closely precedes the further selected communication, and including an indicator coupled to said wireless communication interface and responsive to said information indicative of said determination for indicating to said wireless communication interface that the further apparatus will deviate from the frequency hopping pattern and use the first frequency for transmission of the further selected communication instead of the second frequency.
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29. A frequency hopping wireless communication apparatus, comprising:
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a wireless communication interface for receiving via a wireless communication link from a further frequency hopping wireless communication apparatus information indicative of a frequency that has been selected for transmission of a selected communication from the further apparatus to said apparatus, said frequency having been selected by the further apparatus from a plurality of frequencies based on quality measurements respectively associated with said frequencies, said frequencies having been previously used by said apparatus to transmit information to the further apparatus via the wireless communication link; and an indicator coupled to said wireless communication interface and responsive to said information for indicating to the wireless communication interface that the selected frequency is to be used for receiving the selected communication via the wireless communication link if the wireless communication interface received the selected frequency from the further apparatus, and a frequency selected by the wireless communication apparatus if the wireless communication apparatus did not receive the transmission from the further apparatus. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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Specification