Frequency hopping code division multiple access system and method

A frequency-hopping-communications system, assigned a system bandwidth B, with the system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies not having the same frequencies as other sets of the N sets of frequencies, for communicating base-message data to a plurality of remote units, said frequency-hopping-communications system comprising:

• a plurality of base stations for communicating base-message data to the plurality of remote units, each of said plurality of base stations having a coverage area divided into a plurality of N concentric regions with each concentric region divided into a plurality of N sectors, with each sector of each concentric region assigned one of the N sets of frequencies, each of said plurality of base stations for communicating with a selected-remote unit located within a particular sector of a particular-concentric region, including,
• a base modulator for converting the base-message data to a form suitable for sending over radio waves;
• a base hopping device, coupled to said base modulator, for frequency hopping the converted-base-message data over a set of frequencies assigned to the particular sector of the particular-concentric region, thereby generating a frequency-hopped signal;
• a base controller, coupled to said base-hopping device and responsive to said selected-remote unit being located in the particular sector of the particular-concentric region, for controlling the set of frequencies used by said base-hopping device;
• a base-power amplifier for amplifying the frequency-hopped signal;
• and
• a base antenna including sectoring means for dividing the plurality of N concentric regions into the plurality of N sectors, said base antenna coupled to said base-power amplifier for radiating the frequency-hopped signal from each of said plurality of base stations to said selected-remote unit;
• each of said plurality of remote units including,
• a remote antenna;
• and
• a remote receiver coupled to said remote antenna for recovering from the frequency-hopped signal the base-message data.

A frequency-hopping-communications method, assigned a system bandwidth B, with the system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies not having the same frequencies as other sets of the N sets of frequencies, for communicating base-message data to a plurality of remote units, said frequency-hopping-communications method comprising the steps of:

• communicating from a plurality of base stations base-message data to the plurality of remote units, each of said plurality of base stations having a coverage area divided into a plurality of N concentric regions with each concentric region divided into a plurality of N sectors, with each sector of each concentric region assigned one of the N sets of frequencies, each of said plurality of base stations for communicating with a selected-remote unit located within a particular sector of a particular-concentric region, including the steps of,
• converting the base-message data to a form suitable for sending over radio waves;
• frequency hopping the converted-base-message data over a set of frequencies assigned to the particular sector of the particular-concentric region, thereby generating a frequency-hopped signal;
• controlling, in response to said selected-remote unit being located in the particular sector of the particular-concentric region, the set of frequencies used by each of said plurality of base stations;
• amplifying the frequency-hopped signal;
• transmitting the frequency-hopped signal from each of said plurality of base stations to said selected-remote unit;
• receiving the frequency-hopped signal at said selected-remote unit;
• and
• recovering, from the frequency-hopped signal, the base-message data.

A frequency-hopping-communications system for communicating base-message data to a plurality of remote units, said frequency-hopping-communications system comprising:

• a plurality of base stations for communicating base-message data to the plurality of remote units using a system bandwidth B, with the system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies having frequencies different from frequencies in other sets of the N sets of frequencies, each of said plurality of base stations having a coverage area divided into a plurality of M sectors, with each of said plurality of M sectors divided into a plurality of N concentric regions, with each concentric region of each of said plurality of M sectors assigned one of the N sets of frequencies for communicating with a particular base station without frequency reuse within each of said plurality of M sectors, each of said plurality of base stations for communicating with a selected-remote unit located within a particular concentric region of a particular sector, each of said plurality of base stations including,
• base-modulator means for converting the base-message data to a form suitable for sending over radio waves;
• base-hopping means for frequency hopping the converted-base-message data over a set of frequencies assigned to the particular-concentric region of the particular sector, thereby generating a frequency-hopped signal using concentric-region-specific frequencies;
• base-power means for amplifying the frequency-hopped signal;
• a plurality of M-sector base antennas, coupled to said base-power means, for radiating the frequency-hopped signal from each of said plurality of base stations to said selected-remote unit, each of said plurality of M-sector base antennas for radiating to a specific sector of the plurality of M sectors, with a number of the plurality of M-sector base antennas being equal to a number of the plurality of M sectors;
• and
• base-controller means, responsive to said selected-remote unit located within the particular-concentric region of the particular sector, for controlling the set of frequencies used by said base-hopping means for communicating with said selected-remote unit, with the set of frequencies having frequencies different from other sets of frequencies used in other concentric regions within the particular sector;
• each of said plurality of remote units including,
• a remote antenna;
• and
• remote-receiver means for recovering from the frequency-hopped signal the base-message data.

A frequency-hopping-communications system for communicating base-message data to a plurality of remote units, said frequency-hopping-communications system comprising:

• a plurality of base stations for communicating, using an assigned system bandwidth B, with the system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies having frequencies different from other sets of the N sets of frequencies, base-message data to the plurality of remote units, each of said plurality of base stations having a coverage area divided into a plurality of M sectors, with each of said plurality of M sectors divided into a plurality of N concentric regions, with each concentric region of each of said plurality of M sectors assigned one of the N sets of frequencies for communicating with a particular base station without frequency reuse within each of said plurality of M sectors, each of said plurality of base stations for communicating with a selected-remote unit located within a particular concentric region of a particular sector, each of said plurality of base stations including,
• a base modulator for converting the base-message data to a form suitable for sending over radio waves;
• a base hopping device, coupled to said base modulator, for frequency hopping the converted-base-message data over a set of frequencies assigned to the particular-concentric region of the particular sector, thereby generating a frequency-hopped signal using concentric-region-specific frequencies;
• a base controller, coupled to said base-hopping device and responsive to said selected-remote unit being located in the particular-concentric region of the particular sector, for controlling the set of frequencies used by said base-hopping device for communicating with said selected-remote unit, with the set of frequencies having frequencies different from other sets of frequencies used in other concentric regions within the particular sector;
• a base-power amplifier for amplifying the frequency-hopped signal;
• and
• a plurality of M-sector base antennas coupled to said base-power amplifier, for radiating the frequency-hopped signal from each of said plurality of base stations to said selected-remote unit, each of said plurality of M-sector base antennas for radiating to a specific sector of the plurality of M sectors, with a number of the plurality of M-sector base antennas being equal to a number of the plurality of M sectors;
• each of said plurality of remote units including,
• a remote antenna;
• and
• a remote receiver coupled to said remote antenna for recovering from the frequency-hopped signal the base-message data.

A frequency-hopping-communications method for communicating base-message data to a plurality of remote units, said frequency-hopping-communications method comprising the steps of:

• communicating from a plurality of base stations base-message data to the plurality of remote units using an assigned system bandwidth B, with the assigned system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies having different frequencies from frequencies used in other sets of the N sets of frequencies, each of said plurality of base stations having a coverage area divided into a plurality of M sectors, with each of said plurality of M sectors divided into a plurality of N concentric regions, with each concentric region of each sector assigned one of the N sets of frequencies, each of said plurality of base stations for communicating with a selected-remote unit located within a particular concentric region of a particular sector, including the steps of,
• converting the base-message data to a form suitable for sending over radio waves;
• frequency hopping the converted-base-message data over a set of frequencies assigned to the particular concentric region of the particular sector, thereby generating a frequency-hopped signal using concentric-region-specific frequencies;
• controlling, in response to said selected-remote unit being located in the particular concentric region of the particular sector, the set of frequencies used by each of said plurality of base stations for communicating with said selected-remote unit, with the set of frequencies having frequencies different from other sets of frequencies used in other concentric regions within the particular sector;
• amplifying the frequency-hopped signal;
• transmitting, using at least one of a plurality of M-sector base antennas for radiating to a specific sector, the frequency-hopped signal from each of said plurality of base stations to said selected-remote unit, with a number of the plurality of M-sector base antennas at each of said plurality of base stations being equal to a number of the plurality of M sectors at each of said plurality of base stations;
• receiving the frequency-hopped signal at said selected-remote unit;
• and
• recovering, from the frequency-hopped signal, the base-message data.

A frequency-hopping-communications method for communicating base-message data to a plurality of remote units, said frequency-hopping-communications method comprising the steps of:

• communicating from a base station base-message data to a plurality of remote units using an assigned system bandwidth B, with the assigned system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies having different frequencies from frequencies used in other sets of the N sets of frequencies, the base station having a coverage area divided into a plurality of M sectors, with each of said plurality of M sectors divided into a plurality of N concentric regions, with each concentric region of each sector assigned one of the N sets of frequencies, the base station for communicating with a selected-remote unit located within a particular concentric region of a particular sector, including the steps of,
• converting the base-message data to a form suitable for sending over radio waves;
• frequency hopping the converted-base-message data over a set of frequencies assigned to the particular concentric region of the particular sector, thereby generating a frequency-hopped signal using concentric-region-specific frequencies;
• controlling, in response to said selected-remote unit being located in the particular concentric region of the particular sector, the set of frequencies used by the base station for communicating with said selected-remote unit, with the set of frequencies having frequencies different from other sets of frequencies used in other concentric regions within the particular sector;
• amplifying the frequency-hopped signal;
• transmitting, using at least one of a plurality of M-sector base antennas for radiating to a specific sector, the frequency-hopped signal from the base station to said selected-remote unit, with a number of the plurality of M-sector base antennas at the base station being equal to a number of the plurality of M sectors at the base station;
• receiving the frequency-hopped signal at said selected-remote unit;
• and
• recovering, from the frequency-hopped signal, the base-message data.

A frequency-hopping-communications method for communicating base-message data to a remote unit, said frequency-hopping-communications method comprising the steps of:

• communicating from a base station base-message data to a remote unit using an assigned system bandwidth B, with the assigned system bandwidth B divided into N sets of frequencies, with each set of the N sets of frequencies having different frequencies from frequencies used in other sets of the N sets of frequencies, the base station having a coverage area divided into a plurality of M sectors, with each of said plurality of M sectors divided into a plurality of N concentric regions, with each concentric region of each sector assigned one of the N sets of frequencies, the base station for communicating with the remote unit as located within a particular concentric region of a particular sector, including the steps of,
• converting the base-message data to a form suitable for sending over radio waves;
• frequency hopping the converted-base-message data over a set of frequencies assigned to the particular concentric region of the particular sector, thereby generating a frequency-hopped signal using concentric-region-specific frequencies;
• controlling, in response to the remote unit being located in the particular concentric region of the particular sector, the set of frequencies used by the base station for communicating with the remote unit, with the set of frequencies having frequencies different from other sets of frequencies used in other concentric regions within the particular sector;
• amplifying the frequency-hopped signal;
• transmitting, using a particular one of a plurality of M-sector base antennas, the particular one of the plurality of M-sector base antennas for radiating to a specific sector, the frequency-hopped signal from the base station to the remote unit located in the specific sector, with a number of the plurality of M-sector base antennas at the base station being equal to a number of the plurality of M sectors at the base station;
• receiving the frequency-hopped signal at the remote unit;
• and
• recovering, from the frequency-hopped signal, the base-message data.