Information transmission method, network device, and terminal device

A network device, comprising a processor and a memory storing instructions thereon, the processor when executing the instructions, being configured to:

• control a transceiver to send indication information to a terminal device, wherein the indication information indicates a beam corresponding to a downlink transmission channel determined by the network device from multiple pieces of configuration information, the beam corresponding to the downlink transmission channel is used to transmit the downlink transmission channel, and each piece of the multiple pieces of configuration information comprises at least one of:
• information of at least one transmitting beam, information of a receiving beam corresponding to the at least one transmitting beam, and resource mapping information, wherein the resource mapping information indicates a resource available or unavailable for downlink transmission of the at least one transmitting beam;
• and
• transmit the downlink transmission channel through the beam corresponding to the downlink transmission channel,.
• wherein the downlink transmission channel comprises a data channel, the beam corresponding to the downlink transmission channel comprises a transmitting beam corresponding to the data channel, and the processor is further configured to:
• control the transceiver to send a physical downlink control channel (PDCCH) to the terminal device through a beam in a third beam group, wherein a third indication field of the PDCCH comprises the indication information, the indication information comprises a number for the transmitting beam corresponding to the data channel in a fourth beam group, the indication information specifically indicates that the network device sends the data channel by using the transmitting beam corresponding to the number in the fourth beam group, second configuration information of the multiple pieces of configuration information corresponds to the fourth beam group, the second configuration information is configuration information pre-configured by the network device for the terminal device to receive the data channel.

A terminal device, comprising a processor and a memory storing instructions thereon, the processor when executing the instructions, being configured to:

• control a transceiver to receive indication information sent by a network device, wherein the indication information indicates a beam corresponding to a downlink transmission channel determined by the network device from multiple pieces of configuration information, the beam corresponding to the downlink transmission channel is used to transmit the downlink transmission channel, and each piece of the multiple pieces of configuration information comprises at least one of:
• information of at least one transmitting beam, information of a receiving beam corresponding to the at least one transmitting beam, and resource mapping information, wherein the resource mapping information indicates a resource available or unavailable for downlink transmission;
• determine a receiving beam corresponding to the downlink transmission channel according to the indication information;
• and
• control the transceiver to receive the downlink transmission channel through the receiving beam corresponding to the downlink transmission channel,
• wherein the downlink transmission channel comprises a data channel, the beam corresponding to the downlink transmission channel comprises a transmitting beam corresponding to the data channel, and the processor is further configured to:
• control the transceiver to receive a physical downlink control channel (PDCCH) sent by the network device through a beam in a third beam group, wherein a third indication field of the PDCCH comprises the indication information, the indication information comprises a number for the transmitting beam corresponding to the data channel in a fourth beam group, the indication information specifically indicates that the network device sends the data channel by using the transmitting beam corresponding to the number in the fourth beam group, second configuration information of the multiple pieces of configuration information corresponds to the fourth beam group, the second configuration information is configuration information pre-configured by the network device for the terminal device to receive the data channel.