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 ▼

[ What is claimed is:] [17.] A communication method for communicating data between a base station and a remote unit, said base station having a predetermined coverage area, the method comprising the steps of:dividing said coverage area into N concentric regions which in turn are divided into M secto

[ What is claimed is:] [17.] A communication method for communicating data between a base station and a remote unit, said base station having a predetermined coverage area, the method comprising the steps of:dividing said coverage area into N concentric regions which in turn are divided into M sectors to define M*N concentric sector areas;assigning each concentric sector area one of a plurality of sets of frequencies such that for any given concentric sector area a frequency set is assigned which is different than the frequency sets assigned to all other adjacent concentric sector areas; andcommunicating with a remote unit over the set of frequencies associated with the respective concentric sector area as the remote unit travels from one concentric sector area to another.