Scalable numerology with symbol boundary alignment for uniform and non-uniform symbol duration in wireless communication
Aspects of the present disclosure provide various wireless communication numerology designs that can maintain symbol boundary alignment while multiplexing different numerologies in wireless communication. The symbols may be scaled for different tone or subcarrier spacings while maintaining the symbol boundary alignment between different numerologies. Maintaining the symbol-boundary alignment between different numerologies enables symbol-level numerology multiplexing. The disclosed numerology designs enable low latency communication and improved interference management, and provide non-ambiguous symbol boundary timing reference for multiplexing different numerologies.
1. A method of wireless communication at a scheduling entity, comprising:
establishing communication with a user equipment (UE) utilizing a first numerology having a first subcarrier spacing and a second numerology having a second subcarrier spacing, the second numerology being scaled from the first numerology such that the second subcarrier spacing of the second numerology is a positive integer multiple of the first subcarrier spacing of the first numerology, the positive integer multiple being greater than 1, a symbol length of each symbol of the first numerology being equal to a sum of symbol lengths of two or more corresponding symbols of the second numerology, a symbol of the first numerology or second numerology having a symbol length different from a symbol length of other symbols of the same numerology; and
communicating with the UE utilizing a slot comprising the first numerology and the second numerology.
2. The method of claim 1 , wherein symbol boundaries of each symbol of the first numerology are substantially aligned with symbol boundaries of two or more corresponding symbols of the second numerology.
3. The method of claim 1 , wherein the other symbols have a uniform length.
4. The method of claim 1 , wherein two or more symbols of the first numerology or second numerology have a same symbol length that is different from a symbol length of other symbols of the same numerology.
5. The method of claim 4 , wherein the other symbols have a uniform length.
6. The method of claim 4 , wherein the two or more symbols are located at a beginning or an end of the slot.
7. The method of claim 1 , wherein one or more symbols of the first numerology or second numerology have a symbol length longer than a symbol length of other symbols of the same numerology.
8. The method of claim 1 , wherein a cyclic prefix duration difference between symbols of the first numerology is the same as a cyclic prefix duration difference between symbols of the second numerology.
9. The method of claim 1 , wherein one symbol of the first numerology or second numerology has a different symbol length than all other symbols of the same numerology in the slot.
10. The method of claim 1 , wherein the first numerology and the second numerology are utilized within a same carrier.
11. A scheduling entity for wireless communication, comprising:
a memory stored with executable code; and
a processor operatively coupled with the memory,
wherein the processor is configured by the executable code to:
establish communication with a user equipment (UE) utilizing a first numerology having a first subcarrier spacing and a second numerology having a second subcarrier spacing, the second numerology being scaled from the first numerology such that the second subcarrier spacing of the second numerology is a positive integer multiple of the first subcarrier spacing of the first numerology, the positive integer multiple being greater than 1, a symbol length of each symbol of the first numerology being equal to a sum of symbol lengths of two or more corresponding symbols of the second numerology, a symbol of the first numerology or second numerology having a symbol length different from a symbol length of other symbols of the same numerology; and
communicate with the UE utilizing a slot comprising the first numerology and the second numerology.
12. The scheduling entity of claim 11 , wherein symbol boundaries of each symbol of the first numerology are substantially aligned with symbol boundaries of two or more corresponding symbols of the second numerology.
13. The scheduling entity of claim 11 , wherein the other symbols have a uniform length.
14. The scheduling entity of claim 11 , wherein two or more symbols of the first numerology or second numerology have a same symbol length that is different from a symbol length of other symbols of the same numerology.
15. The scheduling entity of claim 14 , wherein the other symbols have a uniform length.
16. The scheduling entity of claim 14 , wherein the two or more symbols are located at a beginning or an end of the slot.
17. The scheduling entity of claim 11 , wherein one or more symbols of the first numerology or second numerology have a symbol length longer than a symbol length of other symbols of the same numerology.
18. The scheduling entity of claim 11 , wherein a cyclic prefix duration difference between symbols of the first numerology is the same as a cyclic prefix duration difference between symbols of the second numerology.
19. The scheduling entity of claim 11 , wherein one symbol of the first numerology or second numerology has a different symbol length than all other symbols of the same numerology in the slot.
20. The scheduling entity of claim 11 , wherein the first numerology and the second numerology are utilized within a same carrier.
21. A non-transitory computer-readable medium storing code for wireless communication at a scheduling entity, the code comprising instructions executable to:
establish communication with a user equipment (UE) utilizing a first numerology having a first subcarrier spacing and a second numerology having a second subcarrier spacing, the second numerology being scaled from the first numerology such that the second subcarrier spacing of the second numerology is a positive integer multiple of the first subcarrier spacing of the first numerology, the positive integer multiple being greater than 1, a symbol length of each symbol of the first numerology being equal to a sum of symbol lengths of two or more corresponding symbols of the second numerology, a symbol of the first numerology or second numerology having a symbol length different from a symbol length of other symbols of the same numerology; and
communicate with the UE utilizing a slot comprising the first numerology and the second numerology.
22. The non-transitory computer-readable medium of claim 21 , wherein symbol boundaries of each symbol of the first numerology are substantially aligned with symbol boundaries of two or more corresponding symbols of the second numerology.
23. The non-transitory computer-readable medium of claim 21 , wherein the other symbols have a uniform length.
24. The non-transitory computer-readable medium of claim 21 , wherein two or more symbols of the first numerology or second numerology have a same symbol length that is different from a symbol length of other symbols of the same numerology.
25. The non-transitory computer-readable medium of claim 24 , wherein the other symbols have a uniform length.
26. The non-transitory computer-readable medium of claim 24 , wherein the two or more symbols are located at a beginning or an end of the slot.
27. The non-transitory computer-readable medium of claim 21 , wherein one or more symbols of the first numerology or second numerology have a symbol length longer than a symbol length of other symbols of the same numerology.
28. The non-transitory computer-readable medium of claim 21 , wherein a cyclic prefix duration difference between symbols of the first numerology is the same as a cyclic prefix duration difference between symbols of the second numerology.
29. The non-transitory computer-readable medium of claim 21 , wherein one symbol of the first numerology or second numerology has a different symbol length than all other symbols of the same numerology in the slot.
30. The non-transitory computer-readable medium of claim 21 , wherein the first numerology and the second numerology are utilized within a same carrier.