Abstract: Embodiments of the present invention disclose a method for performing communication by using an unlicensed spectrum, a device, and a system, which relate to the field of communications technologies, so as to improve efficiency of using an unlicensed spectrum by user equipment. The method includes: obtaining, by a base station eNB, a time resource and/or a frequency resource by contending with another eNB or another system using an unlicensed spectrum; generating, by the base station eNB, information about the time resource and/or the frequency resource according to the time resource and/or the frequency resource; and sending, by the base station eNB, the information about the time resource and/or the frequency resource to user equipment UE by using a broadcast or multicast message, so that the user equipment UE communicates with the base station eNB according to the information about the time resource and/or the frequency resource.

Abstract: This application provides a message sending method and apparatus. The method includes: determining, by a first device based on a first configuration of a first message, a first time unit for sending the first message; determining, by the first device, whether a resource capable of carrying the first message exists in the first time unit; when the resource capable of carrying the first message does not exist in the first time unit, determining, by the first device, at least one second time unit for sending the first message, where the resource capable of carrying the first message exists in each second time unit; and sending, by the first device, the first message to a second device in the at least one second time unit. In this way, a probability that the message can still be sent increases when a type of a time unit changes dynamically.

Abstract: A method for processing physical downlink control channel data, a transmitting end, and a user equipment are provided and relate to the field of communications, which can extract a scrambling sequence in multiple modulation modes, so that scrambling and descrambling are performed on physical downlink control channel data in multiple modulation modes. The method includes: generating a scrambling sequence corresponding to a control channel element according to an index number of the control channel element and/or a modulation mode used by the control channel element; performing scrambling on physical downlink control channel data by using the scrambling sequence; and sending the scrambled physical downlink control channel data to a user equipment. The embodiments of the present application are used to perform scrambling and descrambling on physical downlink control channel data.

Abstract: In an embodiment, the present invention discloses a method for accessing a network by UE, a core network entity, a base station, and first UE. The method includes determining, by a base station, that first UE provides relay for the second UE; and sending, by the base station, a first message including a first identifier to the first UE. The first message is used to manage a data radio bearer DRB of the first UE so that the DRB of the first UE is used to transmit data of the second UE, and the first identifier is in a one-to-one correspondence with the second UE.

Abstract: Embodiments of the present disclosure provide a communication method, a network side device, and a user terminal. The method includes: establishing, by a user terminal, a connection to a first base station by using a first component carrier; sending, by the first base station, a preprocessing indication message to the user terminal, to indicate that the user terminal is to perform uplink synchronization with a second base station on a second component carrier; and obtaining, by the first base station, a target second base station, and sending a first indication message to the target second base station, to indicate that the user terminal is to perform data transmission with the target second base station.

Abstract: A wireless communications method, apparatus, and system including a terminal is provided. The terminal sets up a connection to a first base station, and stays in always connected mode. When the terminal moves in a dense network, handovers of the first base station can be reduced. Further, when the terminal moves in the dense network, frequent signaling interaction is reduced, paging load in the entire network is reduced, and an end-to-end delay in service setup and transmission is reduced.

Abstract: The embodiment of the disclosure provides a downlink control information transmission method and apparatus, where the method includes: determining a first resource set based on M resource subsets included in target resources, wherein at least two of the M resource subsets do not overlap in frequency domain, and each resource subset comprises at least one control channel bearing resource unit, M is an integer, and M?2; the first resource set comprises N control channel bearing resource units, at least two of the N control channel bearing resource units belong to different resource subsets, and at least two of the N control channel bearing resource units are inconsecutive in frequency domain, N?2, wherein one control channel bearing resource unit includes a plurality of resource element groups (REGs); and receiving downlink control information on the first resource set.

Abstract: A data communication method, an apparatus, and a system are provided. The method includes: sending, by a sending apparatus, a first group of one or more control resource sets to a receiving apparatus; sending, by the sending apparatus, first signaling to the receiving apparatus, where the first signaling is used to instruct the receiving apparatus to receive data on a time-frequency resource for data transmission. Based on the foregoing method, signaling overheads are reduced, and a control channel and data are dynamically reused in a control resource set.

Abstract: The present disclosure provides a data transmission processing method including: receiving first indication information and saving context information of user equipment according to the first indication information, where the context information includes identification information of the user equipment; and decoding a PDCCH based on the identification information of the user equipment, to obtain second indication information, where the second indication information is used to determine that the user equipment is a paged object or that there is a service of the user equipment. The indication information meant for the paged object is carried in the PDCCH, so that the user equipment can determine, depending on whether the indication information can be successfully obtained, whether the user equipment is the paged object or has a service, and perform subsequent processing, for example, connecting to a network, when determining that the user equipment is the paged object or has a service.

Abstract: This application discloses a communication method. A first device obtains first control information, wherein the first control information comprises at least one of indication information of a transmission mode and indication information of a transmission resource; determines a transmission resource for first data based on the first control information; and sends the first data on the determined transmission resource.

Abstract: Embodiments of the present invention provide a wireless communications method, apparatus, and system. A terminal is provided. The terminal sets up a connection to a first base station, and stays in always connected mode. Therefore, when the terminal moves in a dense network, handovers of the first base station can be reduced. Further, when the terminal moves in the dense network, frequent signaling interaction is reduced, paging load in the entire network is reduced, and an end-to-end delay in service setup and transmission is reduced.

Abstract: Embodiments of this application provide an uplink power control method and a terminal. The method includes: obtaining, by a terminal, a power control impact factor, where the power control impact factor includes at least one of the following: beamforming information, a subcarrier spacing, a time length, or a service type; determining, by the terminal, a transmit power of an uplink channel based on the power control impact factor; and sending, by the terminal, the uplink channel at the transmit power of the uplink channel. The embodiments can improve uplink power control precision.

Abstract: Embodiments of this application provide an information transmission method, a terminal device, and an access network device. The information transmission method provided in the embodiments of this application may include: determining resources for carrying N pieces of uplink control information (UCI) partly overlap or completely overlap in time domain, wherein the N pieces of UCI comprise at least one piece of beam channel quality information and at least one of a piece of channel state information or an acknowledgement (ACK)/a negative acknowledgement (NACK), wherein a priority of the beam channel quality information is higher than a priority of the channel state information, and/or a priority of the beam channel quality information is lower than a priority of the ACK/NACK. According to the embodiments of this application, a UCI reporting conflict can be effectively prevented.

Abstract: Embodiments of the present invention disclose a wireless communications method and system, and a full-duplex wireless transceiver, where the method includes: modulating a transmit digital signal into a first radio frequency signal and outputting the first radio frequency signal to a transmit antenna; then performing, under control of a pre-generated control signal, phase adjustment and amplitude adjustment on the first radio frequency signal and obtaining a cancellation signal; performing self-interference cancellation on a second radio frequency signal received from a radio air interface by using a receive antenna and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and finally demodulating the third radio frequency signal into a receive digital signal.

Abstract: The present disclosure provides a data transmission processing method including: receiving first indication information and saving context information of user equipment according to the first indication information, where the context information includes identification information of the user equipment; and decoding a PDCCH based on the identification information of the user equipment, to obtain second indication information, where the second indication information is used to determine that the user equipment is a paged object or that there is a service of the user equipment. The indication information meant for the paged object is carried in the PDCCH, so that the user equipment can determine, depending on whether the indication information can be successfully obtained, whether the user equipment is the paged object or has a service, and perform subsequent processing, for example, connecting to a network, when determining that the user equipment is the paged object or has a service.

Abstract: A data transmission method and an apparatus are disclosed. In an embodiment, a data transmission method includes obtaining, by a user equipment, a first parameter, determining a second parameter based on the first parameter, wherein the second parameter includes a channel coding scheme and/or a transmission waveform, and transmitting data using the second parameter.

Abstract: Embodiments of the present invention relate to the communications field, and provide a method for determining a parameter set of a cell, a method for sending a parameter set of a cell, a device, and a system, so that a terminal can identify a parameter set of a cell in 5G NR supporting a plurality of parameter sets of the cell. The solutions provided in the embodiments of the present invention include: determining, by a base station, feature information of an identification signal based on a parameter set of a cell, wherein the parameter set of the cell comprises a subcarrier spacing; and sending the identification signal to a terminal based on the feature information of the identification signal.

Abstract: Embodiments of the present disclosure relate to a data transmission method, a transmit end device, and a receive end device. The method includes: generating, by a transmit end device, at least first data and second data based on to-be-transmitted data, where a size of the first data and a size of the second data are different; and sending, by the transmit end device, the first data by using a first transmission channel, and sending the second data by using a second transmission channel, where a transmission delay of the first transmission channel is different from a transmission delay of the second transmission channel.

Abstract: A communication method includes: determining, by a first device, first information, where the first information includes one or more link status information of the first device or link requirement information of the first device, and the first device is first user equipment; and sending, by the first user equipment, a first message to a second device, where the first message carries the first information, and the first message instructs the second device to establish a connection for the first device based on the first message. The second device may include either or both of second user equipment and a first network device.

Abstract: A data transmission method, apparatus, and system are disclosed. The method includes: determining, by a first HCD, a target communication resource in a first time period; determining, by the first HCD, a third target communication sub-resource used to transmit data between a first LCD and the first HCD, and sending third indication information to the first LCD by using a fourth target communication sub-resource, where the third indication information is used to indicate the third target communication sub-resource; and receiving, by the first HCD, first target data that is sent by the first LCD by using the third target communication sub-resource, and transmitting the first target data to the access network device; and/or acquiring, by the first HCD, second target data from the access network device, and sending the second target data to the first LCD by using the third target communication sub-resource.