Method for device-to-device communication, terminal device, and network device

A terminal device which is a first terminal device, wherein the first terminal device comprises a processor, a transceiver, and a memory, and the memory is configured to store an instruction, and the processor is configured to execute the instruction stored in the memory to:

• determine first control channel resources from pre-configured resources pool available for transmission of first resources scheduling information, and determine second control channel resources from the pre-configured resources pool available for transmission of second resources scheduling information, wherein the first control channel resources have a time domain length longer than that of the second control channel resources;
• and
• control the transceiver to transmit the first resources scheduling information on the first control channel resources, and transmit the second resources scheduling information on the second control channel resources;
• wherein the first resources scheduling information is used by a second terminal device to determine data channel resources available for the first terminal device to transmit data channels, and the second resources scheduling information is used by a third terminal device to determine the data channel resources;
• the second terminal device is capable of detecting resources scheduling information based on the time domain length of the first control channel resources, and the third terminal device is capable of detecting resources scheduling information based on the time domain length of the first control channel resources and/or the time domain length of the second control channel resources;
• wherein the second control channel resources are located between the first control channel resources and the data channel resources in a frequency domain;
• or
• the data channels are located between the first control channel resources and the second control channel resources in a frequency domain;
• or
• the first control channel resources are located between the second control channel resources and the data channel resources in a frequency domain;
• wherein the data channel resources are adjacent or non-adjacent to the first control channel resources in a frequency domain, the data channel resources are adjacent or non-adjacent to the second control channel resources in a frequency domain, and the first control channel resources are adjacent or non-adjacent to the second control channel resources in a frequency domain.

A terminal device which is a third terminal device, wherein the third terminal device comprises a processor, a transceiver, and a memory, and the memory is configured to store an instruction, and the processor is configured to execute the instruction stored in the memory to:

• detect second resources scheduling information transmitted by a first terminal device from pre-configured resources pool available for transmission of the second resources scheduling information, wherein the second resources scheduling information occupies second control channel resources, and where the second control channel resources have a time domain length shorter than that of first control channel resources, and the first control channel resources are used by the first terminal device to transmit first resources scheduling information;
• and
• determine, according to the second resources scheduling information, data channel resources available for the first terminal device to transmit data channels;
• wherein the first resources scheduling information is used by a second terminal device to determine the data channel resources;
• the second terminal device is capable of detecting resources scheduling information based on the time domain length of the first control channel resources, and the third terminal device is capable of detecting resources scheduling information based on the time domain length of the first control channel resources and/or the time domain length of the second control channel resources;
• wherein the second control channel resources are located between the first control channel resources and the data channel resources in a frequency domain;
• or
• the data channels are located between the first control channel resources and the second control channel resources in a frequency domain;
• or
• the first control channel resources are located between the second control channel resources and the data channel resources in a frequency domain;
• wherein the data channel resources are adjacent or non-adjacent to the first control channel resources in a frequency domain, the data channel resources are adjacent or non-adjacent to the second control channel resources in a frequency domain, and the first control channel resources are adjacent or non-adjacent to the second control channel resources in a frequency domain.