초록 ▼

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 pl

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. The frequency-hopping-communications system includes a plurality of base stations for communicating base-message data to the plurality of remote units. Each of the base stations has a coverage area divided into a plurality of concentric regions with each concentric region assigned one of the N sets of frequencies. For communicating with a selected-remote unit located within a particular-concentric region, each base station has a frequency-hopping device for frequency hopping the base-message data over a set of frequencies assigned to the particular-concentric region, thereby generating a frequency-hopped signal, a controller, responsive to the selected-remote unit being located in the particular-concentric region, for controlling the set of frequencies use by said frequency-hopping device, and a base antenna coupled to the power amplifier for radiating the frequency-hopped signal. Each of the remote units has a receiver for recovering the base-message data from the frequency-hopped signal.

대표청구항 ▼

[ I claim:] [1.] A frequency-hopping-communications method for communicating base-message data to a plurality of remote units, and for communicating remote unit transmissions to a plurality of base stations,said plurality of base stations communicating base-message data to said plurality of remote u

[ I claim:] [1.] A frequency-hopping-communications method for communicating base-message data to a plurality of remote units, and for communicating remote unit transmissions to a plurality of base stations,said plurality of base stations communicating base-message data to said 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 the other sets, each of said plurality of base stations having a coverage area divided into M sectors, with each of said M sectors divided into a plurality of 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, the method including the steps of,frequency hopping base-message data over a first set of frequencies, F.sub.1, assigned to a first concentric region of a first sector, thereby generating a frequency-hopped signal using the first set of frequencies, the first set of frequencies having frequencies different from other sets of frequencies used in other concentric regions within the first sector;controlling, in response to said selected-remote unit being located in the first concentric region of the first sector, the set of frequencies used by a radiating base station for communicating with said selected-remote unit;frequency hopping base-message data over a second set of frequencies, F.sub.2, assigned to a second concentric region of a second sector, thereby generating a frequency-hopped signal using the second set of frequencies, the second concentric region of the second sector being at a same range from the radiating base station as the first concentric region of the first sector from the radiating base station, the second set of frequencies having frequencies different from other sets of frequencies used in other concentric regions of the second sector, the second set of frequencies also being different from the first set of frequencies; andcontrolling, in response to said selected-remote unit being located in the second concentric region of the second sector, the set of frequencies used by the radiating base station for communicating with said selected-remote unit.