Multiple access in wireless telecommunications system for high-mobility applications

1. A process comprising:

transmitting:

(a) a first command to a first wireless terminal to transmit, into a radio channel during a superframe, a first modulated radio-frequency carrier signal that is modulated with:

(i) a first waveform φ 1 (m 1 ,n 1 ) of a first waveform array Φ 1 and a first data item, and

(ii) a second waveform φ 2 (m 2 ,n 2 ) of a second waveform array Φ 2 and a second data item, and

(b) a second command to a second wireless terminal to transmit, into the radio channel during the superframe, a second modulated radio-frequency carrier signal that is modulated with:

(i) a third waveform φ 1 (m 3 ,n 3 ) of the first waveform array Φ 1 and a third data item, and

(ii) a fourth waveform φ 2 (m 4 ,n 4 ) of the second waveform array Φ 2 and a fourth data item, and

wherein:

(i) the waveform φ 1 (m 1 ,n 1 ) is partitioned into N 1 time slots, and

(ii) the waveform φ 2 (m 2 ,n 2 ) is partitioned into N 2 time slot, and

(iii) time slot p 1 of the waveform φ 1 (m 1 ,n 1 ) comprises a basic waveform b 1 (m 1 ) multiplied by exp[2π(n 1 −1)(p 1 −1)i/N 1 ], and

(iv) time slot p 2 of the waveform φ 2 (m 2 ,n 2 ) comprises a basic waveform b 2 (m 2 ) multiplied by exp[2π(n 2 −1)(p 2 −1)i/N 2 ], and

(v) time slot p 3 of the waveform φ 1 (m 3 ,n 3 ) comprises a basic waveform b 1 (m 3 ) multiplied by exp[2π(n 3 −1)(p 3 −1)i/N 1 ], and

(vi) time slot p 4 of the waveform φ 2 (m 4 ,n 4 ) comprises a basic waveform b 2 (m 4 ) multiplied by exp[2π(n 4 −1)(p 4 −1)i/N 2 ], and

(vii) the waveform φ 1 (m 1 ,n 1 ) is multiplied by the first data item, and

(viii) the waveform φ 2 (m 2 ,n 2 ) is multiplied by the second data item, and

(ix) the waveform φ 1 (m 3 ,n 3 ) is multiplied by the third data item, and

(x) the waveform φ 2 (m 4 ,n 4 ) is multiplied by the fourth data item, and

(xi) M 1 , N 1 , M 2 , and N 2 are positive integers greater than 1, and

(xii) m 1 and m 3 are positive integers in the range m 1 , m 3 ϵ{ 1 , . . . , M 1 }, and

(xiii) m 2 and m 4 are positive integers in the range m 2 , m 4 ϵ{ 1 , . . . , M 2 }, and

(xiv) n 1 , n 3 , p 1 , and p 3 are positive integers in the range n 1 , n 3 , p 1 , and p 3 ϵ{ 1 , . . . , N 1 }, and

(xv) n 2 , n 4 , p 2 , and p 4 are positive integers in the range n 2 , n 4 , p 2 , and p 4 ϵ{ 1 , . . . , N 2 }, and

(xvi) M 1 ≠M 2 ;

receiving, from the radio channel during the frame, a third modulated radio-frequency carrier signal via an antenna;

demodulating the third modulated radio-frequency carrier signal to recover the first data item, the second data item, the third data item, and the fourth data item; and

transmitting the first data item and the second data item in association with the first wireless terminal and the third data item and the fourth data item in association with the second wireless terminal.

2. The process of claim 1 wherein M 2 is an integral multiple of M 1 and M 1 <M 2 .

3. The process of claim 1 wherein N 1 ≠N 2 .

4. The process of claim 1 wherein N 2 is an integral multiple of N 1 and N 1 <N 2 .

5. The process of claim 1 wherein waveform φ 1 (m 1 ,n 1 ) and waveform φ 2 (m 2 ,n 2 ) begin at superframe time interval 1 .

6. The process of claim 1 wherein waveform φ 1 (m 1 ,n 1 ) is frame unaligned with waveform φ 2 (m 2 ,n 2 ) in the modulated radio-frequency carrier signal.

7. The process of claim 1 wherein the waveform φ 1 (m 1 ,n 1 ) and the waveform φ 2 (m 2 ,n 2 ) do not overlap in the time-frequency space of the modulated radio-frequency carrier signal.

8. The process of claim 1 wherein the bandwidth of the radio channel is B Hz, and the duration of the basic waveform b 1 (m 1 ) is M 1 /B seconds.

9. The process of claim 1 wherein the bandwidth of the radio channel is B Hz, wherein the duration of the waveform φ 1 (m 1 ,n 1 ) is M 1 ·N 1 /B seconds, and wherein the duration of the waveform φ 2 (m 2 ,n 2 ) is M 2 ·N 2 /B seconds.

10. The process of claim 1 wherein the first data item is less latency tolerant than the second data item.

11. A process comprising:

transmitting:

(a) a first command to a first wireless terminal to transmit, into a radio channel during a superframe, a first modulated radio-frequency carrier signal that is modulated with:

(i) a first waveform φ 1 (m 1 ,n 1 ) of a first waveform array Φ 1 and a first data item, and

(ii) a second waveform φ 2 (m 2 ,n 2 ) of a second waveform array Φ 2 and a second data item, and

(b) a second command to a second wireless terminal to transmit, into the radio channel during the superframe, a second modulated radio-frequency carrier signal that is modulated with:

(i) a third waveform φ 1 (m 3 ,n 3 ) of the first waveform array Φ 1 and a third data item, and

(ii) a fourth waveform φ 2 (m 4 ,n 4 ) of the second waveform array Φ 2 and a fourth data item, and

wherein:

(i) the waveform φ 1 (m 1 ,n 1 ) is partitioned into N 1 time slots, and

(ii) the waveform φ 2 (m 2 ,n 2 ) is partitioned into N 2 time slot, and

(iii) time slot p 1 of the waveform φ 1 (m 1 ,n 1 ) comprises a basic waveform b 1 (m 1 ) multiplied by exp[2π(n 1 −1)(p 1 −1)i/N 1 ], and

(iv) time slot p 2 of the waveform φ 2 (m 2 ,n 2 ) comprises a basic waveform b 2 (m 2 ) multiplied by exp[2π(n 2 −1)(p 2 −1)i/N 2 ], and

(v) time slot p 3 of the waveform φ 1 (m 3 ,n 3 ) comprises a basic waveform b 1 (m 3 ) multiplied by exp[2π(n 3 −1)(p 3 −1)i/N 1 ], and

(vi) time slot p 4 of the waveform φ 2 (m 4 ,n 4 ) comprises a basic waveform b 2 (m 4 ) multiplied by exp[2π(n 4 −1)(p 4 −1)i/N 2 ], and

(vii) the waveform φ 1 (m 1 ,n 1 ) is multiplied by the first data item, and

(viii) the waveform φ 2 (m 2 ,n 2 ) is multiplied by the second data item, and

(ix) the waveform φ 1 (m 3 ,n 3 ) is multiplied by the third data item, and

(x) the waveform φ 2 (m 4 ,n 4 ) is multiplied by the fourth data item, and

(xi) M 1 , N 1 , M 2 , and N 2 are positive integers greater than 1, and

(xii) m 1 and m 3 are positive integers in the range m 1 , m 3 ϵ{ 1 , . . . , M 1 }, and

(xiii) m 2 and m 4 are positive integers in the range m 2 , m 4 ϵ{ 1 , . . . , M 2 }, and

(xiv) n 1 , n 3 , p 1 , and p 3 are positive integers in the range n 1 , n 3 , p 1 , and p 3 ϵ{ 1 , . . . , N 1 }, and

(xv) n 2 , n 4 , p 2 , and p 4 are positive integers in the range n 2 , n 4 , p 2 , and p 4 ϵ{ 1 , . . . , N 2 }, and

(xvi) N 1 ≠N 2 ;

receiving, from the radio channel during the frame, a third modulated radio-frequency carrier signal via an antenna;

demodulating the third modulated radio-frequency carrier signal to recover the first data item, the second data item, the third data item, and the fourth data item; and

transmitting the first data item and the second data item in association with the first wireless terminal and the third data item and the fourth data item in association with the second wireless terminal.

12. The process of claim 11 wherein M 2 is an integral multiple of M 1 and M 1 <M 2 .

13. The process of claim 11 wherein M 1 ≠M 2 .

14. The process of claim 11 wherein N 2 is an integral multiple of N 1 and N 1 <N 2 .

15. The process of claim 11 wherein waveform φ 1 (m 1 ,n 1 ) and waveform φ 2 (m 2 ,n 2 ) begin at superframe time interval 1 .

16. The process of claim 11 wherein waveform φ 1 (m 1 ,n 1 ) is frame unaligned with waveform φ 2 (m 2 ,n 2 ) in the modulated radio-frequency carrier signal.

17. The process of claim 11 wherein the waveform φ 1 (m 1 ,n 1 ) and the waveform φ 2 (m 2 ,n 2 ) do not overlap in the time-frequency space of the modulated radio-frequency carrier signal.

18. The process of claim 11 wherein the bandwidth of the radio channel is B Hz, and the duration of the basic waveform b 1 (m 1 ) is M 1 /B seconds.

19. The process of claim 11 wherein the bandwidth of the radio channel is B Hz, wherein the duration of the waveform φ 1 (m 1 ,n 1 ) is M 1 ·N 1 /B seconds, and wherein the duration of the waveform φ 2 (m 2 ,n 2 ) is M 2 ·N 2 /B seconds.

20. The process of claim 11 wherein the first data item is less latency tolerant than the second data item.