초록 ▼

A multi-rate TDMA communication system includes a baseline TDMA network and at least one auxiliary TDMA network oprating through the same satellite repeater. The baseline and auxiliary networks may each include a plurality of ground stations, the baseline network stations operating at a bit rate dif

A multi-rate TDMA communication system includes a baseline TDMA network and at least one auxiliary TDMA network oprating through the same satellite repeater. The baseline and auxiliary networks may each include a plurality of ground stations, the baseline network stations operating at a bit rate different from the bit rate of the auxiliary network. To maintain orderly communications, a station synchronized with the baseline frame reference burst (FRB) transmits a sub-frame reference burst (SFRB) which latter burst is at a bit rate common to the auxiliary network stations. The auxiliary network stations synchronize to the SFRB.

대표청구항 ▼

A communication system comprising plural, geographically separate stations communicating with each other in a TDMA mode through a quasi-stationary repeater in earth orbit, comprising: means at one of said stations for periodically transmitting to said repeater a frame reference burst modulated at a

A communication system comprising plural, geographically separate stations communicating with each other in a TDMA mode through a quasi-stationary repeater in earth orbit, comprising: means at one of said stations for periodically transmitting to said repeater a frame reference burst modulated at a first predetermined bit rate for defining a baseline frame, means at each of a first group of said stations for receiving said frame reference burst from said repeater, means at each of said first group of stations for transmitting to said repeater at said first predetermined bit rate in first mutually exclusive time periods referenced to said frame reference burst at said repeater, means for periodically transmitting a sub-frame reference burst at a second predetermined bit rate, different from said first predetermined bit rate to said repeater, means at each of a second group of said stations for receiving said sub-frame reference burst from said repeater, and means at each of said second group of stations for transmitting in second mutually exclusive time periods referenced to said sub-frame reference burst at said repeater, each of said second time periods exclusive of said first time periods.