Abstract: A method for generating a video corpus is provided, and specifically includes: obtaining a video to be processed, where the video to be processed corresponds to voice content, and some video images of the video to be processed include a subtitle corresponding to the voice content; and obtaining, based on the voice content, a target video clip from the video to be processed, and using a subtitle included in a video image in the target video clip as an annotation text of the target video clip, to obtain a video corpus. In this way, the video corpus can be automatically generated. Impact on segmentation precision caused by a subjective cognitive error in a manual annotation process can be avoided. Further, efficiency of generating the video corpus is generally high.

Abstract: A signal generation method is disclosed, to enhance an anti-interference capability and a coverage area of a signal. The method includes: A first device obtains a first signal based on transmission information through channel encoding, where the transmission information includes information that the first device needs to send to a second device; the first device generates a second signal based on the first signal through repetition or frequency spread transformation; the first device generates a third signal based on the second signal through linear encoding; and the first device generates a target signal based on the third signal through signal modulation, where the target signal is sent to the second device. Associated devices are also described.

Abstract: This present disclosure discloses example communication methods and communications apparatuses. One example communication method includes a terminal device determining a first offset of a first power class and a second offset of the first power class when a power class of the terminal device is the first power class. A compensation amount of the first power class is determined based on the first offset and the second offset. A determination as to whether to camp on a first cell is made based on the second offset and the compensation amount of the first power class.

Abstract: A data transmission method and a device thereof are provided for tag access. The provided method includes: An answer device receives first signaling sent by a read/write device. The first signaling carries target flag information. The target flag information is used to determine the answer device. First flag information of the answer device matches the target flag information. The answer device determines a first slot, and sends first access information to the read/write device in the first slot. In the provided method, the first slot is determined, to avoid collision of different slots in a same slot in a next round, reduce a collision probability, and improve tag access efficiency.

Abstract: A method includes receiving, by a first device, first signaling from a second device, wherein the first signaling is useable to indicate that the second device successfully received first identity information from the first device and is useable to indicate to the first device to send second identity information to the second device, the first signaling comprises a first inventory identifier, and the first inventory identifier is useable to indicate an identifier of an ongoing inventory process of the second device. The method further includes determining, by the first device based on the first signaling, that the first inventory identifier is the same as a second inventory identifier, wherein the second inventory identifier is useable to indicate an identifier of an ongoing inventory process of the first device. The method further includes sending, by the first device, the second identity information to the second device.

Abstract: This application discloses a tag positioning method. In this application, a target tag receives first signaling sent by a target reader/writer, where the first signaling includes an identity ID of a first transmitter. The target tag sends second signaling to the target reader/writer, where the second signaling includes the ID of the first transmitter. Further, the target reader/writer may determine, based on the ID that is of the first transmitter and that is included in the signaling sent by the target tag, a coverage area that is of a transmitter and in which the target tag is located, to more accurately determine a location of the tag. Therefore, efficiency of tag positioning is improved.

Abstract: This application provides a communication method and a communication apparatus. The method includes: A first device determines first indication information, where the first indication information indicates at least one second device to access the first device when access needs to be performed; and the first device sends the first indication information. In this way, a reader/writer may provide an access opportunity for a tag device that needs to perform access, to improve system efficiency and reduce a missed reading rate.

Abstract: A sensing communication method and an apparatus that may resolve a problem of mutual interference caused when different readers use a same resource to communicate with a tag. A network device schedules a sensing resource of the reader to the reader. The reader sends a sensing signal based on the scheduled sensing resource, and senses a sensing signal of another reader, to obtain a sensing result. The reader sends the sensing result. The reader receives information for determining a resource for communication between the reader and the tag. The reader uses the communication resource to communicate with the tag. The sensing resource is scheduled by the network device, so that communication efficiency between the reader and the tag can be improved.

Abstract: A communication method, applied to a radio frequency identification communication system, and the radio frequency identification communication system includes a reader/writer and a tag connected to the reader/writer. The method includes: the reader/writer receives first information sent by the tag, where the first information is the 1st piece of information that is sent by the tag and that is received by the reader/writer in an inventory process. The reader/writer may identify, in the inventory process, tags of different types based on a capability that is of the tag and that is actively reported by the tag.

Abstract: Embodiments of the present invention provide an communications method. For example, the apparatus receives first information that indicates a first offset from a first set of offsets, wherein the first offset is an offset from a first carrier frequency that is multiple of 100 KHz, and then obtains a carrier frequency of a cell according to the first offset indicated by the first information.

Abstract: The present disclosure relates to the field of wireless communications technologies, relates to a signal sending device, a signal receiving device, a symbol timing synchronization method, and a system, and resolves a problem that complexity of symbol timing synchronization performed by a terminal with relatively low crystal oscillator accuracy is high. In a receiving device, a receiving module receives a synchronization signal including a first signal and a second signal. The first signal includes N1 generalized ZC sequences, and the second signal includes N2 generalized ZC sequences. The second signal is used to distinguish different cells or different cell groups. There are at least two generalized ZC sequences with different root indexes in (N1+N2) generalized ZC sequences.

Abstract: A modal information completion method, an apparatus, and a device are provided. A completion apparatus first obtains a modal information group, wherein the modal information group includes at least two pieces of modal information. Then, the completion apparatus may determine, based on an attribute of the modal information group, whether a part or all of first modal information in the modal information group is missing. Subsequently, the completion apparatus determines a target feature vector of the first modal information based on a preset feature vector mapping relationship and a feature vector of second modal information in the modal information group, so that accuracy of the target feature vector of the first modal information is ensured.

Abstract: Embodiments of the present invention provide an information sending method, including: determining, by a base station, first information indicating a first carrier frequency offset, where the first carrier frequency offset is a carrier frequency offset between an actual cell carrier center frequency and a cell carrier center frequency that is obtained by a terminal; and sending, by the base station, the first information to the terminal, where the first information is used to obtain the actual cell carrier center frequency. According to the technical solutions provided in the embodiments of the present invention, quality of communication between the terminal and the base station is effectively improved.

Abstract: A communication method and apparatus to reduce a waiting latency in a retransmission process. A terminal device receives a first PDSCH from a network device. In response to failing to decode data carried on the first PDSCH, the terminal device sends an SRS to the network device on a first time-frequency resource. In response to the network device not receiving feedback information of the first PDSCH, or receiving feedback information of the first PDSCH that is a NACK, the network device retransmits the first PDSCH based on a result of measuring the SRS. After determining that the first PDSCH fails to be decoded, the terminal device directly sends the SRS to the network device by using the first time-frequency resource.

Abstract: The present disclosure discloses a method for transmitting downlink feedback information, a base station, and a terminal device, so as to ensure that the base station correctly receives the downlink feedback information sent by the terminal device, thereby effectively improving a transmission success rate of the downlink feedback information. In embodiments of the present disclosure, the method includes: sending, by the base station, indication information to the terminal device, where the indication information is used to indicate a target time-frequency resource location, the target time-frequency resource location is a time-frequency resource location at which the terminal device sends the downlink feedback information, and the downlink feedback information is used to feed back a reception status of downlink data that should be received by the terminal device; and receiving, by the base station, the downlink feedback information sent by the terminal device.

Abstract: This application provides a communication method and a communications device. The method includes: receiving, by an access network device from a core network device, a first group identifier of a first terminal group and an identifier of a terminal included in the first terminal group; and sending, by the access network device, the first group identifier and a second group identifier of the first terminal group to the terminal included in the first terminal group. The first group identifier and the second group identifier are used to indicate a paging occasion for the first terminal group, and a paging message for the first terminal group is transmitted on a first physical channel. The technical solutions in the embodiments of this application can improve system efficiency.

Abstract: A method and apparatus is provided. The method includes: obtaining downlink control information, wherein the downlink control information is used to schedule downlink data, and the downlink control information carries time information indicating a time at which uplink information is sent; obtaining, through a system message or radio resource control signaling or a resource of a physical random access channel, information indicating a duration for sending the uplink information; receiving the downlink data; and sending the uplink information according to the time information and the information indicating the duration, wherein the uplink information is used to indicates whether the downlink data is correctly received.

Abstract: The present disclosure relates to channel transmission methods, base stations, and terminal devices. One example method includes receiving a first channel from a network device, determining a frame structure used between the network device and a terminal device according to relationship between a transmission parameter set of the first channel and the frame structure, and communicating with the network device according to the frame structure.

Abstract: A communication method and a communications apparatus are provided. The communication method includes: receiving a first message from a shared channel of a plurality of network slices, where the first message includes a plurality of network IDs, and the plurality of network IDs are in a one-to-one correspondence with the plurality of network slices; selecting a target network slice from the plurality of network slices; and obtaining access configuration information of the target network slice from network configuration information, and accessing the target network slice based on the access configuration information of the target network slice, where the network configuration information includes a network ID of each of the plurality of network slices and the access configuration information of the target network slice.

Abstract: This application provides a system message processing method and apparatus. A terminal receives a master information block (MIB), and obtains indication information. The indication information indicates a type of the MIB. In this way, the terminal can process the MIB based on the type of the MIB. In other words, in embodiments of this application, the terminal may decode the MIB based on the type of the MIB. Therefore, the following case is avoided: The MIB is decoded in a fixed manner, and consequently, the MIB cannot be accurately parsed. In this way, communication efficiency is improved.