Enhanced frequency hopping in a wireless system
AssigneeLucent Technologies Inc.
InventorsKrishna Balachandran, Joseph H. Kang, Kumud K. Sanwal, James Paul Seymour
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Abstract
A wireless endpoint employs frequency hopping for communicating signals in a wireless communications system. Over a time period T, the wireless endpoint performs pseudo-random selection of a frequency from a hopping set of N frequencies such that over at least a portion of the time period T, the frequency selection is constrained to less than the N frequencies.
Claims27
A method for use in wireless equipment, the method comprising the steps of:
- transmitting signals using frequency hopping over a time period T, by selecting a frequency from a set of N frequencies such that over at least a portion of the time period T, the frequency selection is constrained to less than the N frequencies.
A method of frequency hopping for use in wireless equipment, the method comprising the steps of:
- storing a set of hopping frequencies;
- and
- selecting frequencies from the set of hopping frequencies over a time period T by limiting the available frequencies from the hopping set over at least a portion of the time period T.
A method of frequency hopping for use in wireless equipment, the method comprising the steps of:
- initializing a hopping set to a size of F frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- and
- reducing the size of the hopping set over a portion of the time period T by at least one frequency.
A method of frequency hopping for use in wireless equipment, the method comprising the steps of:
- initializing a hopping set to a size of N frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- and
- selecting frequencies from the hopping set over the time period T such that at least one of the selected frequencies is prohibited from subsequent selection in at least a portion of the time period T.
A method of frequency hopping for use in wireless equipment, where a hopping set is initialized to a size of N frequencies, the hopping set used to select therefrom hopping frequencies over a time period T. the method comprising the steps of:
- determining a hopping index value;
- modifying the hopping index value by at least the modulo of a number F, where F≦N;
- selecting a hopping frequency from the hopping set as a function of the modified hopping index value;
- adjusting the order of the hopping set such that the selected hopping frequency is now at a position corresponding to the value of F;
- reducing the value of F;
- and
- returning to the determining step.
A method of frequency hopping for use in wireless equipment, the method comprising the steps of:
- initializing a hopping set to a size of N frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- dividing the hopping set into an allowable frequency set and a prohibited frequency set;
- selecting frequencies from the allowable frequency set;
- and
- after at least one frequency selection, adjusting the membership in the allowable frequency set and the prohibited frequency set.
A method of frequency hopping for use in wireless equipment, the method comprising the steps of:
- dividing a hopping set into an allowable frequency set and a prohibited frequency set;
- and
- transmitting information associated with the division of the hopping set to another wireless endpoint.
A wireless endpoint comprising:
- a transmitter for transmitting signals using frequency hopping over a time period T;
- and
- a processor for selecting a frequency from a set of N frequencies such that over at least a portion of the time period T,. the frequency selection is constrained to less than the N frequencies.
A wireless endpoint comprising:
- a memory for storing a set of hopping frequencies;
- and
- a processor for selecting frequencies from the set of hopping frequencies over a time period T by limiting the available frequencies from the hopping set over at least a portion of the time period T.
A wireless endpoint comprising:
- a memory for storing a hopping set comprising F frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- and
- a processor for reducing the size of the hopping set over a portion of the time period T by at least one frequency.
A wireless endpoint comprising:
- a memory for storing a hopping set comprising N frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- and
- a processor for selecting frequencies from the hopping set over the time period T such that at least one of the selected frequencies is prohibited from subsequent selection in at least a portion of the time period T.
A wireless endpoint comprising:
- a memory for storing a hopping set comprising N frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- and
- a processor for (a) determining a hopping index value, (b) modifying the hopping index value by at least the modulo of a number F, where F≦N, (c) selecting a hopping frequency from the hopping set as a function of the modified hopping index value, (d) adjusting the order of the hopping set such that the selected hopping frequency is now at a position corresponding to the value of F, (e) reducing the value of F;
- and (f) returning to (a).
A wireless endpoint comprising:
- a memory for storing a hopping set comprising N frequencies, the hopping set used to select therefrom hopping frequencies over a time period T;
- and
- a processor for (a) dividing the hopping set into an allowable frequency set and a prohibited frequency set, (b) selecting frequencies from the allowable frequency set, and (c) after at least one frequency selection, adjusting the membership in the allowable frequency set and the prohibited frequency set.
Dependencies are inferred from the claim text.