Abstract: A demodulation reference signal (DMRS) indicating method, a DMRS receiving method, and an apparatus are described. A transmit end determines, from a plurality of groups of demodulation reference signal DMRS configuration information, DMRS configuration information corresponding to a current DMRS transmission scheme. The transmit end obtains DMRS indication information based on the DMRS configuration information, where each group of DMRS configuration information includes a plurality of pieces of DMRSs configuration information. The transmit end sends the DMRS indication information. The described method and the apparatus are implemented to match a plurality of New Radio (NR) scenarios. The described operations can satisfy a requirement for transmitting more layers of data and reduce indication overheads.

Abstract: The present invention discloses an indication information transmission method and apparatus. The method includes: determining, in one or more codebooks, a first codebook used to send a first downlink data stream to a terminal device; determining one or more second codebooks used to send a second downlink data stream; determining codebook indication information used to indicate the first codebook and the one or more second codebooks; and sending the codebook indication information to the terminal device.

Abstract: The invention provides a method and a communications device for transmitting information. The method includes: determining a quantity N of padding bits according to a quantity M of effective information bits included in a code block and a quantity L of effective input ports of a polar code encoder, where M and L are positive integers, and N is a difference between L and M; determining input bits that are to be input into the polar code encoder, where the input bits include the M effective information bits and the N padding bits; inputting, according to a mapping relationship between the L effective input ports and the input bits, the input bits into the polar code encoder through the L effective input ports to perform coding, so as to obtain coded bits; and transmitting the coded bits. This bit-padding manner has ensured successful information transmission.

Abstract: It is possible to reduce the implementation complexity associated with dynamic carrier configuration by defining overlapping sets of candidate numerologies for at least some carriers in the network. A common numerology is included in sets of candidate numerologies pre-associated with two different carriers. This reduces the amount of numerologies that need to be supported by the corresponding user equipments (UEs) and base stations, which in turn reduces the complexity of those devices, e.g., less complex hardware, protocol stacks, and software, lower storage and processing requirements, etc. The common numerology specifies a common subset of physical layer parameters for both carriers. In one example, the common numerology specifies the same sub-carrier frequency spacing and symbol duration for both carriers. The common numerology may further specify the same cyclic prefix (CP) length for symbols communicated over both carriers.

Abstract: Embodiments of the present disclosure disclose a precoding configuration method, device, and system. The precoding configuration method includes: generating precoding configuration information, where the precoding configuration information is used to configure a width of a frequency band for same precoding; and sending the precoding configuration information. The embodiments of the present disclosure further provide a transmit end device, a receive end device, and the precoding configuration system. In the precoding configuration method provided in the embodiments of the present disclosure, the precoding configuration information is generated and sent, so that a receive end can determine, based on the precoding configuration information, the width of the frequency band for same precoding.

Abstract: It is possible to reduce overhead when dynamically establishing an air interface configuration by communicating a modification instruction along with an index associated with a predefine air interface configuration. The modification instruction identifies a modification to one or more parameters of the predefined air interface configuration associated with the index. Together, the index and the modification indication specify a modified air interface configuration that is different than any of the candidate air interface configurations predefined for the network. The modification instruction allows networks to achieve similar degrees of flexibility while using substantially fewer predefined air interface configurations, which in turn permits the index associated with the selected air interface configuration to be signaled using fewer bits.

Abstract: Embodiments of this application disclose a resource configuration method and a device. The method includes: generating, by a transmit end device, configuration information, where the configuration information is used to indicate at least one resource bundling size, the resource bundling size belongs to a resource bundling size set, and the resource bundling size set corresponds to at least one system configuration parameter; and sending, by the transmit end device, the configuration information.

Abstract: Embodiments of the present invention provide a coding method and apparatus, a base station, and user equipment. The method includes: determining a quantity of polar codes used to code a to-be-transmitted data block and a block length of each polar code of the polar codes used to code the to-be-transmitted data block; and determining, according to a quantity of bits of the to-be-transmitted data block, the block length of each polar code of the polar codes used to code the to-be-transmitted data block, and an input composite channel characteristic corresponding to each input bit position in the polar code of the polar codes used to code the to-be-transmitted data block, allocation information of valid input bits of the polar code of the polar codes used to code the to-be-transmitted data block. The quantity of polar codes used to code the to-be-transmitted data block is not less than two.

Abstract: A wireless communication method and an apparatus are provided. The method includes: sending, by a dual-mode terminal, first binding relationship information to an access device on a network side by using a wireless communications module; receiving, by using a visible light receiver, downlink data sent by a visible light transmitter corresponding to the access device; receiving, by using the wireless communications module, second binding relationship information sent by the access device on the network side, or, receiving, by using the visible light receiver, second binding relationship information sent by the visible light transmitter, where the second binding relationship information carries information about a correspondence between a wireless access point of the access device and the visible light transmitter; and sending, by using the wireless communications module, uplink data and/or a feedback message of the downlink data to the wireless access point of the access device.

Abstract: This application provides a data transmission method and an apparatus. The method includes: obtaining, by user equipment, to-be-sent user data; performing, by the user equipment, channel encoding on the to-be-sent user data to obtain N sets of encoded data; performing, by the user equipment, codebook mapping on each of the N sets of encoded data by using a codebook, to obtain N sets of codebook-mapped data, where different sets of encoded data use codebooks that occupy mutually different non-zero physical REs, the non-zero physical RE means a non-zero waveform obtained after mapped data is mapped to a physical RE, and N is a positive integer greater than or equal to 2; and sending, by the user equipment, the N sets of codebook-mapped data to a base station.

Abstract: It is possible to reduce the processing intensity of blind detection by configuring user equipments (UEs) to search for fewer than all possible DCI formats defined for a physical downlink control channel (PDCCH), as this reduces the number of searches performed by the corresponding UE during blind detection. The UE may select the subset of DCI formats to search for during blind detection based on various criteria, such as an air interface configuration assigned to the UE, a UE group to which the UE belongs, a transmission mode used by the UE, a re-transmission scheme assigned to the UE, a characteristic (e.g., size, location) of the UE's search space, or a combination thereof.

Abstract: This application discloses a user sequence transmission method, a network device, and a terminal device. The method includes: sending, by a network device, first signaling to a terminal device, where the first signaling includes first information indicating a quantity of user sequences in a first user sequence space, and the user sequences in the first user sequence space include a universal set of user sequences used by the terminal device served by the network device; receiving, by the network device, a first user sequence sent by the terminal device based on the first information; and performing, by the network device, user detection and/or communication parameter estimation based on the first user sequence.

Abstract: The present disclosure provide a data transmission method, including: receiving, by a central processing node, downlink user data from a first gateway GW; sending, by the central processing node, the downlink user data to a corresponding base station; and when it is determined that an interface between the central processing node and the first GW is congested, sending, by the central processing node, a first bearer switching request message to the first GW, where the first bearer switching request message is used to instruct the first GW to bypass the central processing node when transmitting data. In the embodiments of the present invention, when determining that an interface between a central processing node and a first GW is congested, the central processing node sends a first bearer switching request message to the first GW, so that the first GW transmits downlink user data with the central processing node bypassed.

Abstract: A signal transmission method and an apparatus are disclosed. In an embodiment a signal transmission method includes generating a reference signal and sending the reference signal, wherein the reference signal is sent in a specific time-frequency resource, and the specific time-frequency resource is located on symbols corresponding to a synchronization signal block.

Abstract: It is possible to reduce the processing intensity of blind detection by configuring user equipments (UEs) to search for fewer than all possible DCI formats defined for a physical downlink control channel (PDCCH), as this reduces the number of searches performed by the corresponding UE during blind detection. The UE may select the subset of DCI formats to search for during blind detection based on various criteria, such as an air interface configuration assigned to the UE, a UE group to which the UE belongs, a transmission mode used by the UE, a re-transmission scheme assigned to the UE, a characteristic (e.g., size, location) of the UE's search space, or a combination thereof.

Abstract: This application discloses a wireless assistance method, apparatus, and system. The wireless assistance apparatus includes an obtaining module, a determining module, and a transmission module. The obtaining module is configured to obtain network status information, and the obtaining module transmits the network status information to the determining module. The determining module is configured to receive the network status information, and determine, according to the network status information, a mobile access point that needs to perform wireless assistance, and the determining module transmits information about the mobile access point to the transmission module. The transmission module is configured to receive the information about the mobile access point, and transmit assistance command information to the mobile access point, where the assistance command information is information for instructing the mobile access point to perform wireless assistance.

Abstract: Embodiments of the present invention provide a method and an apparatus for reciprocity calibration between base stations, which relate to the communications field, and can improve precision of reciprocity calibration between base stations. The method includes: obtaining, by each base station by means of calculation, a precoding vector corresponding to a selected subcarrier of the base station; sending, by all the base stations to UE by using the selected subcarriers of the base stations, downlink user-dedicated reference signals that are mutually orthogonal between cells corresponding to the base stations; obtaining, by each base station, an inter-base station calibration compensation coefficient of the selected subcarrier of the base station; and adjusting, by each base station, a self-calibration matrix of the selected subcarrier according to the inter-base station calibration compensation coefficient of the selected subcarrier of the base station.

Abstract: It is possible to reduce the implementation complexity associated with dynamic carrier configuration by defining overlapping sets of candidate numerologies for at least some carriers in the network. A common numerology is included in sets of candidate numerologies pre-associated with two different carriers. This reduces the amount of numerologies that need to be supported by the corresponding user equipments (UEs) and base stations, which in turn reduces the complexity of those devices, e.g., less complex hardware, protocol stacks, and software, lower storage and processing requirements, etc. The common numerology specifies a common subset of physical layer parameters for both carriers. In one example, the common numerology specifies the same sub-carrier frequency spacing and symbol duration for both carriers. The common numerology may further specify the same cyclic prefix (CP) length for symbols communicated over both carriers.

Abstract: Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.

Abstract: Systems and Methods for Self-Contained Air Interface Partitions Signal processing complexity in fifth generation (5G) networks can be reduced by communicating wireless signals over self-contained partitions of a carrier such that the wireless transmission communicated over each self-contained partition of the carrier includes all physical control channel signaling required to decode data carried in a physical data channel of the partition. The control signaling may include resource assignment within the partition, modulation and coding scheme indication, reference signal configuration and retransmission information. In some embodiments, an anchor partition of a carrier is used to communicate initial access information for self-contained partitions of the carrier. The initial access information may include center-frequencies, bandwidths, and/or air interface configurations of the self-contained partitions. The anchor partition may also carry load indications associated with the self-contained partitions.