Transmission method, apparatus, first communication node, second communication node, and medium

A transmission method, comprising:

• receiving indication information comprising a configuration parameter of a sounding reference signal (SRS) that includes at least one of a spatial relationship of a beam, a frequency domain position, or a cyclic shift of an SRS sequence, wherein:
• the indication information indicates that a second communication node sends an uplink signal on a target slot,
• the uplink signal comprises an aperiodic SRS in an SRS resource set,
• a physical downlink control channel (PDCCH) that triggers the aperiodic SRS is located in a slot n;
• a first slot is offset from slot n by a slot offset indicated in a slot offset parameter of the indication information and configured for the SRS resource set,
• the target slot is a (k+1)th valid slot after the first slot, wherein the first slot corresponds to slot (n+slot offset),
• k is 0 or a positive integer and is indicated by the PDCCH if multiple k values are configured by RRC signaling,
• the valid slot includes at least one uplink symbol used for sending all SRS resources in the SRS resource set, and
• the valid slot is a slot that satisfies a minimum timing requirement between the slot n and the sending of all the SRS resources in the SRS resource set;
• and
• sending the uplink signal according to the indication information.

A first communication node, comprising:

• at least one processor;
• and
• a storage apparatus configured to store at least one program,
• wherein when executed by the at least one processor, the at least one program causes the at least one processor to perform steps comprising:
• sending indication information comprising a configuration parameter of a sounding reference signal (SRS) that includes at least one of a spatial relationship of a beam, a frequency domain position, or a cyclic shift of an SRS sequence, wherein:
• the indication information indicates that a second communication node sends an uplink signal on a target slot,
• the uplink signal comprises an aperiodic SRS in an SRS resource set,
• a physical downlink control channel (PDCCH) that triggers the aperiodic SRS is located in a slot n;
• a first slot is offset from slot n by a slot offset indicated in a slot offset parameter of the indication information,
• the target slot is a (k+1)th valid slot after the first slot, wherein the first slot corresponds to slot (n+slot offset),
• k is 0 or a positive integer and is indicated by the PDCCH if multiple k values are configured by RRC signaling,
• the valid slot includes at least one uplink symbol used for sending all SRS resources in the SRS resource set, and
• the valid slot is a slot that satisfies a minimum timing requirement between the slot n and the sending of all the SRS resources in the SRS resource set;
• and
• receiving the uplink signal according to the indication information.

A second communication node, comprising:

• at least one processor;
• and
• a storage apparatus configured to store at least one program,
• wherein when executed by the at least one processor, the at least one program causes the at least one processor to perform steps comprising:
• receiving indication information comprising a configuration parameter of a sounding reference signal (SRS) that includes at least one of a spatial relationship of a beam, a frequency domain position, or a cyclic shift of an SRS sequence, wherein:
• the indication information indicates that a second communication node sends an uplink signal on a target slot,
• the uplink signal comprises an aperiodic SRS in an SRS resource set,
• a physical downlink control channel (PDCCH) that triggers the aperiodic SRS is located in a slot n;
• a first slot is offset from slot n by a slot offset indicated in a slot offset parameter of the indication information,
• the target slot is a (k+1)th valid slot after the first slot, wherein the first slot corresponds to slot (n+slot offset),
• k is 0 or a positive integer and is indicated by the PDCCH if multiple k values are configured by RRC signaling,
• the valid slot includes at least one uplink symbol used for sending all SRS resources in the SRS resource set, and
• the valid slot is a slot that satisfies a minimum timing requirement between the slot n and the sending of all the SRS resources in the SRS resource set;
• and
• sending the uplink signal according to the indication information.