Abstract: A communication method includes receiving, by a network device, first information from a first terminal device, and determining, by the network device, second information based on the first information, and sending the second information to the first terminal device. The first information is useable to indicate that the first terminal device is configured with a capability of sending an uplink signal on a first carrier, and a center frequency of the uplink signal is different from a center frequency of a first downlink signal. Therein the second information is useable to indicate a frequency domain resource useable by the first terminal device to send a first uplink signal, and the first uplink signal is obtained through modulating the first downlink signal by the first terminal device, or the first uplink signal is generated by the first terminal device.

Abstract: Embodiments of this application relate to the communication field, and provide a communication method and apparatus, to implement low-complexity channel encoding by a terminal device. The communication method includes: A terminal device receives first information, where the first information indicates the terminal device to send an uplink signal, and an input bit sequence of the uplink signal is a first bit sequence; and outputs a prestored second bit sequence, where the second bit sequence is obtained by arranging, in a predefined order, a bit sequence obtained through channel encoding performed on the first bit sequence.

Abstract: A terminal device receives first information, indicating to perform out-of-order transmission on a plurality of code blocks (CBs) or on a plurality of code block groups (CBGs) each comprising a respective plurality of CBs. The terminal device transmits the plurality of CBs or the plurality of CBGs in a transmission sequence of the plurality of CBs or the plurality of CBGs.

Abstract: Embodiments of this application provide a communication method and apparatus and system configured to execute the method, which may include receiving a first message from a second network device by using a first access technology. The first message is configured for paging. The first message includes first information. The first information is configured to indicate a second access technology. Sending a second message by using the second access technology. The second message is configured for paging a terminal device.

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 data transmission method and an apparatus. The method includes: a first apparatus determines a time domain resource of first uplink data based on whether a first time segment includes a complete synchronization signal and physical broadcast channel block (SSB). The first apparatus sends the first uplink data based on the time domain resource of the first uplink data. A start moment of the first time segment is n1+X+t1, an end moment is n1+X+Y1?t2, n1 is a start moment of the first uplink data, X is a maximum duration for one time of uplink data sending, Y1 is a duration occupied by a gap between the first uplink data and second uplink data, t1 is a preparation duration between sending and receiving of the first apparatus, t2 is a preparation duration between receiving and sending of the first apparatus.

Abstract: A retrieval-augmented query-and-answer method includes acquiring a to-be-answered query; performing character-level matching and screening between the to-be-answered query and offline-stored material knowledge points in a database to obtain preliminarily screened material knowledge points; performing semantic-level matching and screening between the to-be-answered query and the preliminarily screened material knowledge points to obtain a finely screened material knowledge point; acquiring a bound material slice from the database based on the finely screened material knowledge point; generating prompt information based on the bound material slice and the to-be-answered query; and inputting the prompt information into a query-and-answer large model, processing the prompt information, and generating an answer. This solution can accelerate the query-and-answer processing speed based on a large model and improve the accuracy of crosslingual document retrieval.

Abstract: A communication method and apparatus are provided. The method includes: A second communication apparatus (for example, a reader) sends first signaling to indicate a quantity N of random access occasions, where N is a positive integer. In addition, the second communication apparatus further sends second signaling, where the second signaling includes first information, the first information indicates a number of a first random access occasion, and the number of the first random access occasion is less than or equal to N?1. A first communication apparatus (for example, a tag) receives the first signaling and the second signaling, and determines, based on the first information, whether to initiate random access on the first random access occasion.

Abstract: This application discloses a communication method, apparatus, and system, and a storage medium. In this application, an AMF or an LMF triggers a location service, or triggers a location service and a first service. When receiving a location service request and a first service request, an access network side sends a first message to a low-capability terminal, where existing signaling between the low-capability terminal and the access network side may be reused as the first message, and the first message includes positioning configuration information; and the low-capability terminal sends a positioning signal to the access network side based on the positioning configuration information, to position the low-capability terminal.

Abstract: A signal transmission method and apparatus are disclosed. The method includes: determining a first target sequence corresponding to a first information bit sequence based on a first mapping set, wherein the first mapping set includes a mapping relationship between 2K candidate values and 2K first sequences, each of the 2K first sequences includes M elements, K represents a quantity of information bits carried by one OFDM symbol, and M represents a quantity of subcarriers of a first frequency domain resource for transmitting the first information bit sequence. The method further includes performing subcarrier mapping, inverse fast Fourier transform (IFFT), and cyclic prefix (CP) addition on the first target sequence to obtain a first signal; and transmitting the first signal over the first frequency domain resource.

Abstract: This application provides a data transmission method and a communication apparatus. The method includes: sending a first message, where the first message includes identification information of a first terminal device and information about a first carrier corresponding to the first terminal device; and transmitting data with the first terminal device by using the first carrier. Based on the method described in this application, a carrier used for data transmission can be flexibly configured for a terminal device, thereby improving system performance.

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: This application provides a communication method and apparatus. The communication method includes: A transmit device uses different ZC sequences to represent a first OOK symbol ON and a second OOK symbol ON. The first OOK symbol ON and the second OOK symbol ON correspond to different ZC sequences, and are used as signal inputs before DFT in a DFT-s-OFDM generation procedure. According to the communication method provided in this application, flatness of a DFT-transformed frequency-domain signal can be improved. In this way, transmission performance of an OOK signal generated through DFT-s-OFDM on a frequency-selective channel is improved.

Abstract: A communication method and a communication apparatus are provided. The communication method includes: A terminal device receives a carrier signal, and sends a first signal. A spacing between a first frequency in a frequency band of the first signal and a center frequency of a carrier bandwidth is greater than or equal to a first frequency spacing. The first frequency is a frequency having a smallest frequency spacing from the center frequency of the carrier bandwidth in the frequency band of the first signal. The spacing between the first frequency and the center frequency of the carrier bandwidth is greater than or equal to the first frequency spacing, which means that the first frequency in the frequency band of the first signal is far away from the center frequency of the carrier bandwidth.

Abstract: A communication method and a communication apparatus are disclosed. The communication method includes: A first network device sends a first downlink signal at a first time. The first time is also the time at which a second network device sends a second downlink signal, the first downlink signal includes first information, the second downlink signal includes second information, and a length of the first information is the same as a length of the second information. A first terminal device receives the first downlink signal, and sends a first uplink signal to the first network device at a second time based on the first downlink signal. The communication method provided in this application can improve a coverage capability, and help improve communication efficiency.

Abstract: Embodiments of this application provide a communication method and system, and an apparatus, to improve energy charging efficiency. The method includes: At least two active devices send excitation signals to a passive device in a first time period, where the at least two active devices include a first active device and a second active device, and the excitation signals are used to charge energy for the passive device. That at least two active devices send excitation signals to a passive device in a first time period includes: The first active device sends a first excitation signal to the passive device in the first time period; and the second active device sends a second excitation signal to the passive device in the first time period, where a first frequency configuration corresponding to the first excitation signal is different from a second frequency configuration corresponding to the second excitation signal.

Abstract: This application provides a cell selection method and a terminal device, and relates to the communication field. In a cell selection process, a requirement on a capability of the terminal device is lowered. The method includes: The terminal device obtains a target signal of a target cell; and when the terminal device continuously successfully obtains a target signals, the terminal device determines the target cell as a cell on which camping is allowed, where a is a positive integer greater than a threshold b, and the cell on which camping is allowed is a cell that meets a cell selection criterion requirement of the terminal device; or when a quantity of target signals continuously successfully obtained by the terminal device is less than or equal to a threshold b, the terminal device determines the target cell as a cell on which camping is not allowed.

Abstract: A communication method and apparatus are provided, and relate to the field of communication technologies, to prevent terminal devices from being repeatedly read while performing inventory on the terminal devices at a plurality of coverage levels. This reduces power consumption of the terminal devices, and improves an inventory rate. The method may include: When indicating a terminal device to perform access, a network device may also indicate an identifier of an event or a session that triggers access; the terminal device initiates access; and when receiving a second access indication triggered by a same event or session, the terminal device may determine not to make a response. In this way, the terminal device is not repeatedly read based on a same event/session/coverage level.

Abstract: Example communication methods and apparatuses are described. In one example method, a network device determines a first signal, determines a length of a modulation symbol of a second signal based on the first signal, and sends the first signal and the second signal to a terminal device. The terminal device determines the length of the modulation symbol of the second signal based on the first signal, and demodulates the second signal based on the length of the modulation symbol of the second signal. A length of a modulation symbol of the first signal is one of a plurality of lengths of modulation symbols. The first signal is a preamble signal or a signal used by the terminal device for synchronization. The second signal is a data signal after the first signal.

Abstract: This application provides a communication method and a related apparatus. The method includes a first device obtaining first information, where the first information includes at least one of condition information for accessing a first cell and resource configuration information for accessing the first cell. The first device sends the first information to a second device, where the first information is used for the second device to determine whether access to the first cell is allowed, or the first information is used for the second device to determine a first resource for accessing the first cell, and the first resource is used for the second device to communicate with the first device. According to the method, duration of waiting for access and communication by the second device in wireless communication can be reduced, power consumption during waiting for communication is reduced, and energy efficiency is improved.