Method and device for wireless communication

A method in a base station that supports configurable subcarrier spacings, comprising:

• transmitting a third signaling, the third signaling being used for determining a first time-frequency resource pool;
• transmitting a first signaling, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource;
• and
• transmitting the first radio signal on the target time-frequency resource, or receiving the first radio signal on the target time-frequency resource;
• wherein the target time-frequency resource belongs to a first frequency band in frequency domain;
• the first signaling is specific to a receiver of the first signaling;
• the first time-frequency resource pool belongs to the first frequency band in frequency domain;
• the receiver of the first signaling assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing;
• the third signaling is a broadcast signaling;
• the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing;
• wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz.

A UE that supports configurable subcarrier spacings, comprising:

• a first receiver:
• used for receiving a third signaling and a first signaling, the third signaling being used for determining a first time-frequency resource pool, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource;
• and
• a first processer:
• used for receiving the first radio signal on the target time-frequency resource, or transmitting the first radio signal on the target time-frequency resource;
• wherein the target time-frequency resource belongs to a first frequency band in frequency domain;
• the first signaling is specific to the UE;
• the first time-frequency resource pool belongs to the first frequency band in frequency domain;
• the UE assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing;
• the third signaling is a broadcast signaling;
• the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing;
• wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz.

A base station that supports configurable subcarrier spacings, comprising:

• a first transmitter:
• used for transmitting a third signaling and a first signaling, the third signaling being used for determining a first time-frequency resource pool, wherein the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal, or, the first signaling is used for determining a subcarrier spacing corresponding to a first radio signal and a target time-frequency resource;
• and
• a second processor:
• used for transmitting the first radio signal on the target time-frequency resource, or receiving the first radio signal on the target time-frequency resource;
• wherein the target time-frequency resource belongs to a first frequency band in frequency domain;
• the first signaling is specific to a receiver of the first signaling;
• the first time-frequency resource pool belongs to the first frequency band in frequency domain;
• the receiver of the first signaling assumes that radio signals in the first time-frequency resource pool correspond to a unified subcarrier spacing;
• the third signaling is a broadcast signaling;
• the unified subcarrier spacing is configurable, the third signaling is used for determining the unified subcarrier spacing;
• wherein the third signaling is composed of information bits of a MIB, the subcarrier spacing corresponding to the first radio signal is a positive integral multiple of 15 kHz.