Signal transmission method and apparatus

A signal transmission method, performed by a second communication node, comprising:

• receiving a first signaling;
• determining a slot corresponding to a reference signal according to the received first signaling;
• and
• receiving the reference signal on the determined slot corresponding to the reference signal,
• wherein the determined slot corresponding to the reference signal is a valid slot;
• wherein the determining slot corresponding to the reference signal comprises:
• determining that the slot corresponding to the reference signal is T=K+n which is the valid slot;
• wherein the valid slot comprises one of the following:
• a downlink slot, or a slot comprising Nx downlink symbols, or a slot in which each symbol for transmitting the reference signal is a downlink symbol, or a slot in which a symbol for transmitting the reference signal is not an uplink symbol;
• and
• wherein Nx is greater than N0, Nx and N0 are both positive integers, N0 is a minimum number of symbols of a valid downlink slot, K denotes a slot for transmitting trigger signaling, n denotes a slot offset carried by offset signaling, and K and n are non-negative integers;
• wherein determining the slot corresponding to the reference signal further comprises:
• in a case where the determined slot, T=K+n, corresponding to the reference signal is not the valid slot, a valid slot T1 corresponding to the reference signal is determined in one of following manners:
• determining that the T1 is a minimum valid slot greater than the T;
• or
• determining that T+T0 is the valid slot corresponding to the reference signal, wherein the T0 is a positive integer and T+T0 is a minimum valid slot.

A first communication node, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements:

• configuring and sending a first signaling;
• and
• determining, according to the first signaling, a slot for sending a reference signal, and
• sending the reference signal on the slot for sending the reference signal,
• wherein the determined slot for sending the reference signal is a valid slot;
• wherein a slot, T=K+n, for sending the reference signal is a valid slot, and the valid slot comprises one of the following:
• a downlink slot, a slot comprising Nx downlink symbols, a slot in which each symbol for transmitting the reference signal is a downlink symbol, or a slot in which a symbol for transmitting the reference signal is not an uplink symbol;
• wherein Nx is greater than N0, Nx and N0 are both positive integers, N0 is a minimum number of symbols of a valid downlink slot, K denotes a slot for transmitting trigger signaling, n denotes a slot offset carried by offset signaling, and K and n are non-negative integers;
• wherein in a case where the determined slot, T=K+n, for sending the reference signal is not the valid slot, a valid slot T1 for sending the reference signal is determined in one of following manners:
• determining that the T1 is a minimum valid slot greater than the T;
• or
• determining that T+T0 is the valid slot for sending the reference signal, wherein T0 is a positive integer and T+T0 is a minimum valid slot.

A second communication node, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements:

• receiving a first signaling;
• determining a slot corresponding to a reference signal according to the received first signaling;
• and
• receiving the reference signal on the determined slot corresponding to the reference signal,
• wherein the determined slot corresponding to the reference signal is a valid slot;
• wherein the determining slot corresponding to the reference signal comprises:
• determining that the slot corresponding to the reference signal is T=K+n which is the valid slot;
• wherein the valid slot comprises one of the following:
• a downlink slot, or a slot comprising Nx downlink symbols, or a slot in which each symbol for transmitting the reference signal is a downlink symbol, or a slot in which a symbol for transmitting the reference signal is not an uplink symbol;
• and
• wherein Nx is greater than N0, Nx and N0 are both positive integers, N0 is a minimum number of symbols of a valid downlink slot, K denotes a slot for transmitting trigger signaling, n denotes a slot offset carried by offset signaling, and K and n are non-negative integers;
• wherein determining the slot corresponding to the reference signal further comprises:
• in a case where the determined slot, T=K+n, corresponding to the reference signal is not the valid slot, a valid slot T1 corresponding to the reference signal is determined in one of following manners:
• determining that the T1 is a minimum valid slot greater than the T;
• or
• determining that T+T0 is the valid slot corresponding to the reference signal, wherein the T0 is a positive integer and T+T0 is a minimum valid slot.