Transmission method, apparatus, first communication node, second communication node, and medium
Provided are a transmission method and apparatus, a first communication node, a second communication node, and a medium. In the method, indication information is sent, where the indication information is used for indicating that a second communication node sends an uplink signal or receives a downlink signal; and signal transmission with the second communication node is performed according to the indication information.
1 . A transmission method, 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.
2 . The method according to claim 1 , further comprising:
configuring the slot offset parameter in the SRS resource set through higher-layer signaling.
3 . 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.
4 . The method according to claim 3 , wherein the slot offset parameter is configured by a first communication node in the SRS resource set through higher-layer signaling.
5 . 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.
6 . The first communication node according to claim 5 , wherein when executed by the at least one processor, the at least one program further cause the at least one processor to configure the slot offset parameter in the SRS resource set through higher-layer signaling.
7 . 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.
8 . The second communication node according to claim 7 , wherein the slot offset parameter is configured by a first communication node in the SRS resource set through higher-layer signaling.