Wireless communication method and device

A wireless communications method, comprising:

• receiving, by a terminal device, first information, wherein the first information is carried in DCI, and the first information is configured to trigger aperiodic CSI reporting or semi-persistent CSI reporting;
• determining, by the terminal device, a first uplink (UL) time domain location according to a time offset and a first downlink (DL) time domain location used as a start point, wherein a time unit length of the time offset is a time unit length of UL transmission used in CSI reporting, or a time unit length of DL transmission performed in the first DL time domain location;
• reporting CSI in the first UL time domain location;
• and
• receiving second information, wherein the second information is used for indicating the time offset to the terminal, and the second information and the first information are carried in the same DCI,
• wherein the first DL time domain location used as the start point comprises a downlink slot where a DCI signaling is located, and the time unit length of the time offset is a slot,
• wherein determining the first UL time domain location according to the time offset and the first DL time domain location used as the start point comprises:
• mapping the downlink slot where the DCI signaling is located to a uplink slot;
• and
• determining the first UL time domain location by adding the time offset to the uplink slot.

A network device, comprising a transceiver and a processor, wherein

• the transceiver is configured to:
• send first information, wherein the first information is carried in DCI, and is configured to trigger a terminal to perform aperiodic CSI reporting or semi-persistent CSI reporting;
• the processor is configured to:
• determine a first UL time domain location according to a time offset and a first DL time domain location used as a start point, wherein a time unit length of the time offset is a time unit length of UL transmission used for performing CSI reporting, or a time unit length of DL transmission performed in the first DL time domain location;
• the transceiver is further configured to:
• receive CSI reported by the terminal in the first UL time domain location, and send second information, wherein the second information is used for indicating the time offset to the terminal and the second information and the first information are carried in the same DCI,
• wherein the first DL time domain location used as the start point comprises a downlink slot where a DCI signaling is located, and the time unit length of the time offset is a slot,
• wherein the processor is further configured to:
• map the downlink slot where the DCI signaling is located to a uplink slot;
• and
• determine the first UL time domain location by adding the time offset to the uplink slot.

A terminal, comprising a transceiver and a processor, wherein

• the transceiver is configured to:
• receive first information, wherein the first information is carried in DCI, and is configured to trigger aperiodic CSI reporting or semi-persistent CSI reporting;
• the processor is configured to:
• determine a first UL time domain location according to a time offset and a first DL time domain location used as a start point, wherein a time unit length of the time offset is a time unit length of UL transmission used for performing CSI reporting, or a time unit length of DL transmission performed in the first DL time domain location;
• the transceiver is further configured to:
• report CSI in the first UL time domain location;
• and
• receive second information, wherein the second information is used for indicating the time offset to the terminal, and the second information and the first information are carried in the same DCI,
• wherein the first DL time domain location used as the start point comprises a downlink slot where a DCI signaling is located, and the time unit length of the time offset is a slot,
• wherein the processor is further configured to:
• map the downlink slot where the DCI signaling is located to a uplink slot;
• and
• determine the first UL time domain location by adding the time offset to the uplink slot.