Signal transmission and reception methods and apparatus

A network device, comprising:

• a memory and processor circuitry, the memory storing a program, and the processor circuitry being configured to execute the program to implement:
• receiving a first uplink signal transmitted by a terminal equipment, wherein a first priority of the first uplink signal is higher than a first priority of a second uplink signal;
• or
• receiving the second uplink signal transmitted by the terminal equipment, wherein the first priority of the second uplink signal is higher than the first priority of the first uplink signal;
• or
• receiving the first uplink signal and the second uplink signal transmitted by the terminal equipment after being multiplexed, wherein the first priority of the first uplink signal is identical to the first priority of the second uplink signal;
• wherein a time-frequency resource of the first uplink signal at least partially overlaps a time-frequency resource of the second uplink signal in a time domain or in a time-frequency domain;
• the first priority being a physical layer priority and represented by one or more indices, the larger the index of the first priority, the higher the priority.

A communication system, comprising:

• a terminal equipment, configured to determine that a time-frequency resource of a first uplink signal at least partially overlaps a time-frequency resource of a second uplink signal in a time domain or in a time-frequency domain;
• compare the first uplink signal with the second uplink signal, the comparison at least comprising comparison of a first priority of the first uplink signal with a first priority of the second uplink signal, the first priority being a physical layer priority and represented by one or more indices, the larger the index of the first priority, the higher the priority;
• and transmit the first uplink signal to a network device, wherein the first priority of the first uplink signal is higher than the first priority of the second uplink signal;
• or transmit the second uplink signal to the network device, wherein the first priority of the second uplink signal is higher than the first priority of the first uplink signal;
• or, transmit the first uplink signal and the second uplink signal to the network device after being multiplexed, wherein the first priority of the first uplink signal is identical to the first priority of the second uplink signal;
• and
• a network device, configured to receive a first uplink signal transmitted by the terminal equipment, wherein a first priority of the first uplink signal is higher than a first priority of a second uplink signal;
• or receive the second uplink signal transmitted by the terminal equipment, wherein the first priority of the second uplink signal is higher than the first priority of the first uplink signal;
• or receive the first uplink signal and the second uplink signal transmitted by the terminal equipment after being multiplexed, wherein the first priority of the first uplink signal is identical to the first priority of the second uplink signal.