Information transmission method, network device, and terminal device

A terminal device, wherein the terminal device is configured to operate in a communication system in a New Radio (NR) technology, and to communicate with a network device through a frequency-domain resource on a carrier used by the communication system, the frequency-domain resource being a contention based frequency-domain resource, the terminal device comprising:

• an input interface, an output interface, a processor and a memory for storing instructions executable by the processor;
• wherein the input interface, output interface, the processor and the memory are connected through a bus system;
• wherein the processor is configured to:
• control the input interface to receive first information from the network device through a first time-frequency resource, wherein the first time-frequency resource is a time-frequency resource in a first downlink transmission burst, the first information is transmitted on the first time-frequency resource through a physical downlink control channel (PDCCH), and the first information comprises Downlink Control Information (DCI);
• determine, according to the first information, that the first time-frequency resource is a downlink time-frequency resource, wherein the first information is further used to determine an ending position of the first downlink transmission burst and the first information is obtained by first beamforming;
• and
• measure channel state information (CSI) of a downlink channel from the network device according to the ending position of the first downlink transmission burst and a channel state information-reference signal (CSI-RS).

A network device, wherein the network device is configured to operate in a communication system in a New Radio (NR) technology, and to communicate with a terminal device through a frequency-domain resource on a carrier used by the communication system, the frequency-domain resource being a contention based frequency-domain resource, the network device comprising:

• an input interface, an output interface, a processor and a memory for storing instruction executable by the processor;
• wherein the output interface, the processor and the memory are connected through a bus system;
• and
• wherein the processor is configured to:
• determine an available first time-frequency resource, the first time-frequency resource being a time-frequency resource in a first downlink transmission burst;
• and
• control the output interface to send first information to the terminal device through the first time-frequency resource, wherein the first information is transmitted on the first time-frequency resource through a physical downlink control channel (PDCCH), and the first information comprises Downlink Control Information (DCI),
• wherein the first information is used by the terminal device to determine that the first time-frequency resource is a downlink time-frequency resource,
• wherein the first information is further used by the terminal device to determine an ending position of the first downlink transmission burst, and the first information is obtained by first beamforming, and
• wherein the terminal device measures channel state information (CSI) of a downlink channel from the network device according to the ending position of the first downlink transmission burst and a channel state information-reference signal (CSI-RS).