Relay transmission method and device

A device for relay transmission, comprising:

• a processor, configured to generate a Media Access Control (MAC) Protocol Data Unit (PDU), wherein the MAC PDU contains identification information of a remote terminal equipment;
• and
• a sender, configured to send a first bottom-layer data frame, which is obtained by processing the MAC PDU through a bottom layer, to a relay terminal equipment,
• wherein the device is the remote terminal equipment or the device is network equipment,
• wherein when the device is the network equipment,
• the sender is further configured to, before sending the first bottom-layer data frame to the relay terminal equipment, send a Physical Downlink Control Channel (PDCCH) to the relay terminal equipment, wherein the PDCCH is configured to schedule the first bottom-layer data frame, and the PDCCH is scrambled by adopting a relay-specific Radio Network Temporary Identity (RNTI, wherein if the first bottom-layer data frame is received by the relay terminal equipment by addressing through the RNTI, the relay terminal equipment determines that the first bottom-layer data frame is required to be forwarded.

A device for relay transmission, comprising:

• a receiver, configured to receive a second bottom-layer data frame sent by a relay terminal equipment, wherein the second bottom-layer data frame is obtained by processing a Media Access Control (MAC) Protocol Data Unit (PDU) containing identification information of a remote terminal equipment through a bottom layer;
• and
• a processor, configured to determine in a higher layer that the second bottom-layer data frame corresponds to the remote terminal equipment according to the identification information of the remote terminal equipment contained in the second bottom-layer data frame received by the receive,
• wherein the device is a network equipment or the device is the remote terminal equipment,
• the receiver is configured to receive the second bottom-layer data frame sent by the relay terminal equipment by adopting a transmission resource for relay transmission;
• and
• the processor is configured to determine that the second bottom-layer data frame has been forwarded by the relay terminal equipment according to the transmission resource occupied by the second bottom-layer data frame.