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 comprising:
receiving, by an apparatus, a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarrier spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets is associated with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 30 kHz and 60 kHz, and the first candidate subcarrier spacing set is associated 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 is associated with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
3. The method of claim 1 , wherein the 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 is associated with the carrier frequency band and a system channel bandwidth.
4. The method of claim 3 , 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 the system channel bandwidth.
5. The method of claim 1 , wherein the maximum channel bandwidth is determined in accordance with a maximum FFT size for a subcarrier spacing.
6. The method of claim 1 , wherein the receiving the signal comprises one of:
receiving semi-static signaling, receiving dynamic signaling, receiving a radio resource control (RRC) signal, receiving a layer 1 (L1) signal, receiving a broadcast message, receiving a multi-cast message, or receiving a uni-cast message.
7. An apparatus comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarrier spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets is associated with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 30 kHz and 60 kHz, and the first candidate subcarrier spacing set is associated with a carrier frequency band sub 6 GHz and a maximum channel bandwidth of 100 MHz.
8. The apparatus of claim 7 , 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 is associated with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
9. The apparatus of claim 7 , wherein the 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 is associated with the carrier frequency band and a system channel bandwidth.
10. The apparatus of claim 9 , 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 the system channel bandwidth.
11. The apparatus of claim 7 , wherein the maximum channel bandwidth is determined in accordance with a maximum FFT size for a subcarrier spacing.
12. The apparatus of claim 7 , wherein the instructions to receive the signal include instructions to perform one of:
receiving semi-static signaling, receiving dynamic signaling, receiving a radio resource control (RRC) signal, receiving a layer 1 (L1) signal, receiving a broadcast message, receiving a multi-cast message, or receiving a uni-cast message.
13. A method comprising:
transmitting, by a network component to a user equipment (UE), a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarrier spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets is associated with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 30 kHz and 60 kHz, and the first candidate subcarrier spacing set is associated with a carrier frequency band sub 6 GHz and a maximum channel bandwidth of 100 MHz.
14. The method of claim 13 , 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 is associated with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
15. The method of claim 13 , wherein the 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 is associated with the carrier frequency band and a system channel bandwidth.
16. The method of claim 15 , 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 the system channel bandwidth.
17. The method of claim 13 , wherein the maximum channel bandwidth is determined by the network component in accordance with a maximum FFT size for a subcarrier spacing.
18. The method of claim 13 , wherein the transmitting the signal comprises one of:
transmitting semi-static signaling, transmitting dynamic signaling, transmitting a radio resource control (RRC) signal, transmitting a layer 1 (L1) signal, transmitting a broadcast message, transmitting a multi-cast message, or transmitting a uni-cast message.
19. 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 to:
transmit, to a user equipment (UE), a signal indicating one or more subcarrier spacing options from a first candidate subcarrier spacing set of multiple candidate subcarrier spacing sets,
wherein each candidate subcarrier spacing set of the multiple candidate subcarrier spacing sets is associated with a carrier frequency band and a maximum channel bandwidth, and wherein the first candidate subcarrier spacing set comprises subcarrier spacings of 30 kHz and 60 kHz, and the first candidate subcarrier spacing set is associated with a carrier frequency band sub 6 GHz and a maximum channel bandwidth of 100 MHz.
20. The network component of claim 19 , 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 is associated with a carrier frequency band above 6 GHz and a maximum channel bandwidth of 400 MHz.
21. The network component of claim 19 , wherein the 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 is associated with the carrier frequency band and a system channel bandwidth.
22. The network component 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 the system channel bandwidth.
23. The network component of claim 19 , wherein the maximum channel bandwidth is determined by the network component in accordance with a maximum FFT size for a subcarrier spacing.
24. The network component of claim 19 , wherein the instructions to transmit the signal include instructions to perform one of:
transmitting semi-static signaling, transmitting dynamic signaling, transmitting a radio resource control (RRC) signal, transmitting a layer 1 (L1) signal, transmitting a broadcast message, transmitting a multi-cast message, or transmitting a uni-cast message.