Abstract: This application provides a data transmission method, a terminal device, and a network device. The method includes: obtaining, by a terminal device, first configuration information, where the first configuration information includes at least one first bearer identifier and path configuration information corresponding to the first bearer identifier, and the path configuration information corresponding to the first bearer identifier includes at least one of a sidelink transmission path and a network device forwarding transmission path; obtaining, by the terminal device, first service data and a second bearer identifier corresponding to the first service data; selecting, by the terminal device, a transmission path for the first service data based on the first bearer identifier, the second bearer identifier, and the path configuration information; and transmitting, by the terminal device, the first service data on the transmission path.

Abstract: The present invention discloses a data packet transmission method. A terminal device receives uplink scheduling resource configuration information sent by a base station; the terminal device determines a data transmission priority corresponding to each of N logical channels; the terminal device loads data on M logical channels in the N logical channels into a media access control protocol data unit (MAC PDU) based on the data transmission priority corresponding to each of the N logical channels; and the terminal device sends the MAC PDU to the base station on the uplink scheduling resource by using the physical communication characteristic of the uplink scheduling resource. According to the embodiments of the present invention, transmission of data on a logical channel with a high priority is ensured, and a waste of resources is avoided, thereby matching a resource with a service to the utmost.

Abstract: Example multi-carrier based transmission methods and apparatus are described. One example method includes that a first terminal device obtains first direct link data. The first terminal device sends the first direct link data and first indication information to a second terminal device on a first transmission carrier, where the first indication information is used to indicate that the first terminal device sends second direct link data on at least one second transmission carrier. The second terminal device adjusts a receive link according to the indication information and receives the second direct link data on the second transmission carrier.

Abstract: A device for producing black phosphorus which includes a reactor having one end connected to a feeding pipe and another end connected to a discharge pipe; a propeller blade unit including a rotating shaft mounted between the two ends of the reactor and a blade element mounted on the rotating shaft; a motor connected to the rotating shaft for controlling a rotation speed of the blade element; a heating device enclosing the reactor at an outer side and defines the reactor into a plurality of heating zones; and an inert gas input connected to the discharge pipe. The device is simple and safe in operation, can optimize the production process at low cost, and has high level of automation, thus facilitating a continuous production of black phosphorus under normal pressure.

Abstract: A method of producing black phosphorus which includes the steps of: weighing and mixing reaction raw materials which comprises metallic tin, red phosphorus and monocrystalline iodine, wherein a weight ratio of tin: red phosphorus: iodine is 0.6-3.5: 5-45: 0.1-0.8; feeding the mixture to a high-temperature resistant metal reaction tube; removing air by introducing inert gas and sealing the reaction tube tightly; placing the metal reaction tube inside a muffle furnace for carrying out calcination reaction by first increasing a temperature at a preset rate to a maximum temperature and keeping warm and then decreasing a temperature at a preset rate and keeping warm, then to room temperature so that the black phosphorus is produced. The conversion rate is very high and the quality of the produced product is classified as high quality.