Signal transmission method and device, and system

A device for signal transmission comprising:

• a transceiver, configured to receive first information sent by a base station, wherein the first information is used to indicate a resource of a reference signal, and second information sent by the base station, wherein the second information is used to indicate a transmission direction of the device on the resource;
• and
• a processor configured to determine to perform at least one of interference measurement and channel measurement on the resource or to transmit the reference signal on the resource by determining, based on the second information, whether to perform the at least one of interference measurement and channel measurement on the resource, or to transmit the reference signal on the resource, wherein the second information used to indicate the transmission direction of the device on the resource comprises:
• the second information being used to indicate the transmission direction on the resource, or, the second information is used to indicate a receiving or transmitting state of the device.

A system comprising:

• a first device including a transceiver and processor, the transceiver configured to receive first information sent by a second device, wherein the first information is used to indicate a resource of a reference signal, and second information sent by the second device, wherein the second information is used to indicate a transmission direction of the first device on the resource, and, the processor configured to determine to perform at least one of interference measurement and channel measurement on the resource or to transmit the reference signal on the resource by determining, based on the second information, whether to perform the at least one of interference measurement and channel measurement on the resource, or to transmit the reference signal on the resource, wherein the second information used to indicate the transmission direction of the first device on the resource comprises:
• the second information being used to indicate the transmission direction on the resource, or, the second information is used to indicate a receiving or transmitting state of the first device;
• and
• the second device including a transceiver and a processor configured to:
• control the transceiver to transmit the first information to the first device, wherein the first information is used to indicate the resource of the reference signal;
• and transmit the second information to the first device, wherein the second information is used to indicate the transmission direction of the first device on the resource, wherein the second information used to indicate the transmission direction of the first device on the resource comprises:
• the second information being used to indicate the transmission direction on the resource;
• or the second information is used to indicate a receiving or transmitting state of the first device.