Abstract: This application discloses a method and an apparatus for determining a data feedback resource. The method includes receiving, by a first terminal, first data sent by a second terminal. The method includes determining a feedback resource of the first data. The feedback resource of the first data is a feedback resource in a feedback resource pool. The method includes sending feedback information of the first data to the second terminal on the feedback resource. The feedback information indicates a receiving status of the first data.

Abstract: A communication method, a network side device, and a terminal are provided. In the method, a network side device selects one group of values from at least two preset groups of values for a transmission parameter set. The network side device sends the selected group of values. A terminal sends communication data based on the group of values of the at least two groups of values of the transmission parameter set.

Abstract: A communication method, a network side device, and a terminal are provided. In the method, a network side device selects one group of values from at least two preset groups of values for a transmission parameter set. The network side device sends the selected group of values. A terminal sends communication data based on the group of values of the at least two groups of values of the transmission parameter set.

Abstract: A method includes: mapping, by a first terminal device, first information to a first time unit and a second time unit; and sending, by the first terminal device, the first information in the first time unit and the second time unit, where the first time unit includes a first symbol including a first cyclic prefix, the second time unit includes at least one second symbol including a second cyclic prefix, a length of the first cyclic prefix is greater than a length of the second cyclic prefix, and a length of the first time unit is equal to N times a length of the second symbol including the second cyclic prefix in the second time unit.

Abstract: Embodiments of the present disclosure disclose a playlist switching method, apparatus and system, a terminal and a storage medium. The method includes: generating a playlist switching request according to a trigger operation of a creator of a singing room, and sending the playlist switching request to a service, where the playlist switching request includes a target playlist identification and a singing room identification after switching (S110); and in case of receiving switching success information, displaying playlist information corresponding to the target playlist identification on a display interface (S120).

Abstract: A synchronization method includes: determining a data signal, where a target sequence in the data signal is mapped to at least one symbol that includes the first symbol within a time unit, data in the data signal is mapped to at least one another symbol in the time unit other than the at least one symbol, the first symbol includes a cyclic prefix, and the target sequence is used by a second device to synchronize the data signal; and sending the data signal to the second device in the time unit. In the present disclosure, a sequence used to synchronize a data signal for each transmission is mapped at an equal spacing to at least one symbol that includes the first symbol within a time unit for the current transmission.

Abstract: A method and system for including a base station that configures a first user equipment (UE) that is in a radio resource control connected state with the base station. The UE is configured to be a synchronization source and transmit a first device-to-device synchronization signal (D2DSS) by using a synchronization resource that comprises a time resource, a frequency resource or a time and frequency resource. The base station instructs the first UE to transmit the first D2DSS using the synchronization resource. The base station signals the UE to configure the UE separately from the signal to transmit the D2DSS, and both of the signals are performed with radio resource control signaling from the base station to the UE.

Abstract: This application discloses a method and an apparatus for determining a data feedback resource. The method includes receiving, by a first terminal, first data sent by a second terminal. The method includes determining a feedback resource of the first data. The feedback resource of the first data is a feedback resource in a feedback resource pool. The method includes sending feedback information of the first data to the second terminal on the feedback resource. The feedback information indicates a receiving status of the first data.

Abstract: This application discloses a method and an apparatus for determining a data feedback resource. The method includes receiving, by a first terminal, first data sent by a second terminal. The method includes determining a feedback resource of the first data. The feedback resource of the first data is a feedback resource in a feedback resource pool. The method includes sending feedback information of the first data to the second terminal on the feedback resource. The feedback information indicates a receiving status of the first data.

Abstract: A method and system for including a base station that configures a first user equipment (UE) that is in a radio resource control connected state with the base station. The UE is configured to be a synchronization source and transmit a first device-to-device synchronization signal (D2DSS) by using a synchronization resource that comprises a time resource, a frequency resource or a time and frequency resource. The base station instructs the first UE to transmit the first D2DSS using the synchronization resource. The base station signals the UE to configure the UE separately from the signal to transmit the D2DSS, and both of the signals are performed with radio resource control signaling from the base station to the UE.

Abstract: This application provides a communication method and a terminal device. The communication method may include determining, by user equipment (UE), a candidate resource set on a first carrier, where the first carrier is a carrier on which a resource is currently to be selected, and the first carrier is used to transmit first data.

Abstract: A system and method for multi-cell access are provided. A method includes transmitting at least one control channel to a communications device. The at least one control channel includes control information, and the transmitting is performed by at least one cell in a subset of a cooperating set. The method also includes transmitting to the communications device based on control information transmitted to the communications device, or receiving from the communications device based on control information transmitted to the communications device. The transmitting is performed by at least one other cell in the cooperating set, or the receiving is performed by the at least one other cell in the cooperating set.

Abstract: The present application discloses a method and device for processing multimedia information, an electronic equipment, and a computer-readable storage medium. The method for processing multimedia information includes: detecting whether multimedia configuration parameters have changed during a process of recording multimedia information; and recording the multimedia information based on the changed multimedia configuration parameters when detecting that the multimedia configuration parameters have changed. According to the embodiments of the present application, multimedia configuration parameters of the special effects such as stickers, make-up, filters, and mixing can be added during the recording of multimedia information, which improves the user experience.

Abstract: Example scheduling assignment information transmission methods, systems, and devices are described. One example method includes obtaining, by a user equipment (UE), a multiplexing manner used to indicate a relationship between a time-frequency resource for transmitting scheduling assignment information and a time-frequency resource for transmitting data information. The UE receives downlink control information comprising scheduling assignment resource indication information sent by a network device, and obtains, based on the scheduling assignment resource indication information and the multiplexing manner, resource location information occupied to transmit the scheduling assignment information. The UE can then transmit the scheduling assignment information based on the resource location information occupied by the scheduling assignment information.

Abstract: The present disclosure provides a data sending method. A first terminal device, determines at least two carriers to transmit at least two pieces of data corresponding to a same transport block, and in a one-to-one correspondence with the at least two pieces of data. The at least two pieces of data can be sent by the first terminal to a second terminal device or a network device by using the at least two carriers. When the first terminal device sends data, the first terminal device may send the at least two pieces of data to the second terminal device or the network device on the at least two carriers to improve reliability of data transmission. The at least two pieces of data may be sent simultaneously, to avoid an increased latency by transmissions of the at least two pieces of data in different time units.

Abstract: The present disclosure relates to reference signal sending or receiving methods and systems, terminal devices, and access network devices. One example method includes sending, by a first device, first control information to a second device, where the first control information is used to indicate a first resource used by the first device to send a reference signal, and sending, by the first device, the reference signal to the second device on the first resource.

Abstract: The present disclosure relates to communication methods and communications apparatus. In one example communication method, a first terminal determines a start time unit of a resource period, and transmits communication data in the resource period, where communication data is transmitted in the start time unit and the communication data is retransmitted in another time unit of the resource period. Then the first terminal sends transmission sequence number indication information and time domain transmission resource indication information to a second terminal that performs direct communication with the first terminal.

Abstract: Embodiments of the present disclosure disclose a playlist switching method, apparatus and system, a terminal and a storage medium. The method includes: generating a playlist switching request according to a trigger operation of a creator of a singing room, and sending the playlist switching request to a service, where the playlist switching request includes a target playlist identification and a singing room identification after switching (S110); and in case of receiving switching success information, displaying playlist information corresponding to the target playlist identification on a display interface (S120).

Abstract: This application provides a terminal mode obtaining method and apparatus, and a device. The method includes: obtaining, by a first terminal device, at least two types of terminal information comprising terminal information of terminal devices that can use a shared resource pool, where the shared resource pool is shared by the terminal devices in at least two types of terminal modes, and the terminal information includes a terminal mode and a terminal type; receiving control information sent by a second terminal device, where the control information indicates that the second terminal device sends data on a first time-frequency resource in a first time period in the shared resource pool; and determining, based on the control information and the terminal information, a terminal mode that is of the second terminal device and that exists when the second terminal device sends data on the first time-frequency resource.

Abstract: Embodiments of this application disclose a data transmission method, including: sending, by a base station, first scheduling information to first UE, where the first scheduling information is used to instruct the first UE to send data to second UE based on the first scheduling information; receiving, by the base station, first feedback information sent by the first UE; and sending, by the base station, second scheduling information to the first UE if the first feedback information indicates that the second UE fails to receive the data. The embodiments of this application further provide a base station, UE, and a data transmission system.