Methods and systems for numerology determination of wireless communication systems
A method, system, and device to obtain a basic subcarrier spacing, or a channel bandwidth, or a maximum transmission bandwidth, or a usable subcarrier spacing set via a predefined mapping rule is provided. In an embodiment, a method in a network component to determine a system numerology includes determining, by the network component, one or more subcarrier spacing options from a candidate subcarrier spacing set that is associated with a carrier frequency band. The method also includes transmitting, by the network component, a signal indicating to one or more UEs one or more subcarrier spacing options from the candidate subcarrier spacing set.
1. A method in a network component to determine system numerology and channel bandwidth, the method comprising:
transmitting, by the network component to one or more UEs, a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarriers spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 15 kHz, 30 kHz, and 60 kHz, and the first candidate subcarrier spacing set has a Predefined relationship with a carrier frequency band sub 6 GHz and a maximum channel bandwidth of 100 MHz.
2. The method of claim 1 , wherein the multiple candidate subcarrier spacing sets comprise a second candidate subcarrier spacing set, the second candidate subcarrier spacing set comprising subcarrier spacings of 60 kHz and 120 kHz, and wherein the second candidate subcarrier spacing set has a predefined relationship with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
3. The method of claim 1 , wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with the carrier frequency band, the maximum channel bandwidth, and a maximum transmission bandwidth.
4. The method of claim 3 , wherein the first candidate subcarrier spacing set has a predefined relationship with the carrier frequency band sub 6 GHz, the maximum channel bandwidth of 100 MHz, and a maximum transmission channel bandwidth of 40 MHz, or wherein a second candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with a carrier frequency band above 6 GHz, a maximum channel bandwidth of 400 MHz, and a maximum channel bandwidth of 110 or 200 MHz.
5. The method of claim 1 , wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets comprises a usable subcarrier spacing subset from the each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets, and the usable subcarrier spacing subset has a predefined relationship with the carrier frequency band and the maximum channel bandwidth.
6. The method of claim 5 , wherein the usable subcarrier spacing subset is associated with fast Fourier transform (FFT) sizes such that a same sampling rate is maintained over different usable subcarrier spacing options applicable to a channel bandwidth.
7. The method of claim 1 , wherein the maximum channel bandwidth is determined by the network component in accordance with a maximum FFT size for a subcarrier spacing.
8. The method of claim 1 , wherein the transmitted signal comprises one of:
semi-static signaling or dynamic signaling,
a radio resource control (RRC) signal or a layer 1 (L1) signal, or
a broadcast message, a multi-cast message, or a uni-cast message.
9. A network component to determine system numerology and channel bandwidth, the network component comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions for:
transmitting, to one or more UEs, a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarriers spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 15 kHz, 30 kHz, and 60 kHz, and the first candidate subcarrier spacing set has a predefined relationship with a carrier frequency band sub 6 GHz and a maximum channel bandwidth of 100 MHz.
10. The network component of claim 9 , wherein the multiple candidate subcarrier spacing sets comprise a second candidate subcarrier spacing set, the second candidate subcarrier spacing set comprising subcarrier spacings of 60 kHz and 120 kHz, and wherein the second candidate subcarrier spacing set has a predefined relationship with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
11. The network component of claim 9 , wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with the carrier frequency band, the maximum channel bandwidth, and a maximum transmission bandwidth.
12. The network component of claim 11 , wherein the first candidate subcarrier spacing set has a predefined relationship with the carrier frequency band sub 6 GHz, the maximum channel bandwidth of 100 MHz, and a maximum transmission channel bandwidth of 40 MHz, or wherein a second candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with a carrier frequency band above 6 GHz, a maximum channel bandwidth of 400 MHz, and a maximum channel bandwidth of no or 200 MHz.
13. The network component of claim 9 , wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets comprises a usable subcarrier spacing subset from the each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets, and the usable subcarrier spacing subset has a predefined relationship with the carrier frequency band and the maximum channel bandwidth.
14. The network component of claim 13 , wherein the usable subcarrier spacing subset is associated with fast Fourier transform (FFT) sizes such that a same sampling rate is maintained over different usable subcarrier spacing options applicable to a channel bandwidth.
15. The network component of claim 9 , wherein the maximum channel bandwidth is determined by the network component in accordance with a maximum FFT size for a subcarrier spacing.
16. The network component of claim 9 , wherein the transmitted signal comprises one of:
semi-static signaling or dynamic signaling,
a radio resource control (RRC) signal or a layer 1 (L1) signal, or
a broadcast message, a multi-cast message, or a uni-cast message.
17. A non-transitory computer-readable medium storing computer instructions for instructing a network component to determine system numerology and channel bandwidth, that when executed by one or more processors, cause the one or more processors to perform operations, the operations comprising:
transmitting, to one or more UEs, a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarriers spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 15 kHz, 30 kHz, and 60 kHz, and the first candidate subcarrier spacing set has a predefined relationship with a carrier frequency band sub 6 GHz and a maximum channel bandwidth of 100 MHz.
18. The non-transitory computer-readable medium of claim 17 , wherein the multiple candidate subcarrier spacing sets comprise a second candidate subcarrier spacing set, the second candidate subcarrier spacing set comprising subcarrier spacings of 60 kHz and 120 kHz, and wherein the second candidate subcarrier spacing set has a predefined relationship with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
19. The non-transitory computer-readable medium of claim 17 , wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with the carrier frequency band, the maximum channel bandwidth, and a maximum transmission bandwidth.
20. The non-transitory computer-readable medium of claim 19 , wherein the first candidate subcarrier spacing set has a predefined relationship with the carrier frequency band sub 6 GHz, the maximum channel bandwidth of 100 MHz, and a maximum transmission channel bandwidth of 40 MHz, or wherein a second candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets has a predefined relationship with a carrier frequency band above 6 GHz, a maximum channel bandwidth of 400 MHz, and a maximum channel bandwidth of 110 or 200 MHz.
21. The non-transitory computer-readable medium of claim 17 , wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets comprises a usable subcarrier spacing subset from the each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets, and the usable subcarrier spacing subset has a predefined relationship with the carrier frequency band and the maximum channel bandwidth.
22. The non-transitory computer-readable medium of claim 21 , wherein the usable subcarrier spacing subset is associated with fast Fourier transform (FFT) sizes such that a same sampling rate is maintained over different usable subcarrier spacing options applicable to a channel bandwidth.
23. The non-transitory computer-readable medium of claim 17 , wherein the maximum channel bandwidth is determined by the network component in accordance with a maximum FFT size for a subcarrier spacing.
24. The non-transitory computer-readable medium of claim 17 , wherein the transmitted signal comprises one of:
semi-static signaling or dynamic signaling,
a radio resource control (RRC) signal or a layer 1 (L1) signal, or
a broadcast message, a multi-cast message, or a uni-cast message.