Abstract: This application discloses a channel quality information reporting method and apparatus, to resolve a prior-art problem that a communication link transmission failure is caused due to movement of user equipment. The method includes: sending, by a network device, P1 first reference signals to user equipment on a first reference signal resource, and sending P2 second reference signals to the user equipment on a second reference signal resource; performing, by the user equipment, channel quality measurement on the received first reference signal and the received second reference signal; and reporting, by the user equipment to the network device, M reference signal resource indexes, channel quality information corresponding to the M reference signal resource indexes, and reference signal types or reference signal resource set indexes corresponding to the M reference signal resource indexes.

Abstract: A vehicle terminal determines a data format of detection information, where the detection information is associated with a map element. The vehicle terminal sends the detection information to a first network device based on the determined data format. The vehicle terminal receives map element change information sent by the first network device or a second network device, to update an electronic map. The first network device and the second network device each may be a cloud server or a road side unit.

Abstract: This application discloses a synchronization signal sending method and a related device. The method includes: generating, a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained based on a first m-sequence, the second synchronization signal sequence is a sequence obtained based on a Gold sequence, the Gold sequence is generated based on a second m-sequence and a third m-sequence, and a generator polynomial of the first m-sequence is the same as a generator polynomial of the second m-sequence; mapping, the first synchronization signal sequence onto M subcarriers in a first time unit to obtain a first synchronization signal, and mapping the second synchronization signal sequence onto M subcarriers in a second time unit to obtain a second synchronization signal, where M and N are positive integers greater than 1.

Abstract: The present disclosure provides example autonomous driving apparatuses and computer program products. One example apparatus includes receiving vehicle attribute information and traveling information of a target vehicle from the target vehicle. Layer information of a first road section on which the target vehicle travels is obtained from an autonomous-driving-policy-layer based on the traveling information. A first autonomous driving policy for the target vehicle is obtained based on the layer information of the first road section and the vehicle attribute information of the target vehicle. The first driving policy is sent to the target vehicle.

Abstract: This application relates to the field of communications technologies, and discloses an internet of vehicles-based dynamic information sending method and device, to constrain a range of sent dynamic information in a high definition map, so as to reduce a transmission amount of the dynamic information in the high definition map and improve transmission efficiency of the dynamic information. The method includes: A first device determines an indication range of dynamic information in a high definition map based on path information of a navigation map. The first device sends first indication information to a second device. The first indication information is used to indicate the dynamic information in the indication range in the high definition map.

Abstract: A power control method, including obtaining, by a UE, configuration information, where the configuration information includes a configuration parameter of at least one secondary carrier (Scell) configured by a base station for the UE; setting, by the UE, an initial power adjustment value of the Scell according to the configuration parameter of the Scell in the configuration information, and controlling, by the UE, transmit power on the Scell according to the set initial power adjustment value of the Scell.

Abstract: The present disclosure relates to beam configuration methods and apparatus. One example method include receiving beam configuration information from a network device, where the beam configuration information indicates a terminal device to transmit or receive a signal by using a first beam, and transmitting or receiving the signal by using at least the first beam after a first preset duration starting from a first time-domain unit, where the first time-domain unit is an uplink slot in which an acknowledgement (ACK) message for the beam configuration information is transmitted to the network device.

Abstract: This application relates to the field of wireless communications technologies, and in particular, to a sounding reference information (SRS) transmission method, to resolve a problem of when to transmit an SRS. In the method, user equipment (UE) receives SRS resource configuration information sent by a base station. The UE receives downlink control information (DCI) sent by the base station. The UE sends an SRS in a determined slot and symbol, where the determined symbol is determined by the UE based on the SRS resource configuration information.

Abstract: This application provides a channel quality information reporting method, a terminal device, and a network device. The reporting method includes: receiving, by a terminal device, a first reference signal and a second reference signal that are sent by a network device; receiving, by the terminal device, first indication information sent by the network device, where the first indication information includes a quasi co-location (QCL) assumption relationship between the second reference signal and the first reference signal; and reporting, by the terminal device, second channel quality information to the network device based on the QCL assumption relationship, where the second channel quality information is channel quality information for the second reference signal. According to this application, resource overheads for reporting channel quality information can be reduced.

Abstract: A method includes: configuring, by a base station, at least two types of random access resources, where the at least two types of random access resources include a first-type random access resource and a second-type random access resource; and different types of random access resources are in a one-to-one correspondence with different sending beam forms of a terminal; or the first-type random access resource is associated with resources of different downlink signals, and the second-type random access resource is not associated with the resources of the different downlink signals.

Abstract: This application provides a method including: receiving first configuration information of an SRS resource from a network device, where the first configuration information includes a repetition factor of the SRS resource, and the repetition factor of the SRS resource is a quantity N of positions at which the SRS resource is mapped to a same subcarrier and mapped to at least one continuous symbol in one time unit, where N?1 and is an integer; determining at least one first frequency domain resource to which the SRS resource is mapped in a first time unit.

Abstract: A signal monitoring method and apparatus are provided. The method includes: determining, by a terminal device based on received configuration information, an index of a first time unit in which a start position of a control channel resource of a control channel is located, where a system frame number in which the first time unit is located is determined based on a first parameter; and monitoring, by the terminal device, the control channel starting from a time domain position corresponding to the index of the first time unit. In this way, the terminal device can monitor the control channel starting from a time unit corresponding to the index of the first time unit, to avoid monitoring the control channel extremely early and reduce overheads.

Abstract: A network device sends K reference signal resources, where K is an integer greater than 0. The network device receives a first random access preamble in a first random access time-frequency resource unit. The network device determines indexes of S reference signal resources and first channel state information CSI of the S reference signal resources based on the first random access preamble and the first random access time-frequency resource unit the S reference signal resources are reference signal resources in the K reference signal resources, and S is an integer greater than 0 and less than or equal to K.

Abstract: This application discloses a synchronization signal sending method and a related device. The method includes: generating, a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained based on a first m-sequence, the second synchronization signal sequence is a sequence obtained based on a Gold sequence, the Gold sequence is generated based on a second m-sequence and a third m-sequence, and a generator polynomial of the first m-sequence is the same as a generator polynomial of the second m-sequence; mapping, the first synchronization signal sequence onto M subcarriers in a first time unit to obtain a first synchronization signal, and mapping the second synchronization signal sequence onto M subcarriers in a second time unit to obtain a second synchronization signal, where M and N are positive integers greater than 1.

Abstract: This disclosure describes methods, apparatuses, and systems for signal transmission based on DCI. An example method includes: receiving DCI from a base station, the DCI includes a precoding matrix index, the precoding matrix index belongs to a first index set, wherein the precoding matrix index is used to determine a precoding matrix for transmitting data by the terminal device, each index in the first index set corresponds to a precoding matrix in a first precoding matrix set, a second precoding matrix set comprises a codebook, the first precoding matrix set is a proper subset of the second precoding matrix set, and each precoding matrix index in the first index set has a value that is less than or equal to a quantity of precoding matrices comprised in the first precoding matrix set; and transmitting, by the terminal device, the data according to the precoding matrix index.

Abstract: This application discloses a reference signal configuration method and apparatus. Before a network device sends reference signals aperiodically, the network device sends configuration information to a terminal device, where the configuration information is used to indicate a timeslot offset of one or more reference signal resource sets. Therefore, the network device can flexibly send reference signals in different timeslots, thereby reducing a quantity of times of reference signal triggering and measurement result reporting, and improving efficiency of a communications system.

Abstract: A paging message sending and receiving method and apparatus, the method including receiving, by a terminal device, paging indication information from a network device, where the paging indication information indicates whether at least one paging group needs to receive a paging message, and determining, by the terminal device based on the paging indication information, a paging occasion on which a paging group in which the terminal device is located receives the paging message.

Abstract: This application provides a data transmission method, a network device, and a terminal device. The method includes: generating, by the network device, first information, where a value of a bit included in the first information is used to indicate a demodulation reference symbol (DMRS) port combination in a second set, each DMRS port combination in the second set belongs to a first set, the first set includes a plurality of DMRS port combinations, the DMRS port combination includes at least one DMRS port, and a quantity of DMRS port combinations included in the second set is less than a quantity of DMRS port combinations included in the first set; and sending, by the network device, the first information to the terminal device. According to embodiments of this application, signaling overheads can be reduced.

Abstract: This application discloses a reference signal configuration method and apparatus. Before a network device sends reference signals aperiodically, the network device sends configuration information to a terminal device, where the configuration information is used to indicate a timeslot offset of one or more reference signal resource sets. Therefore, the network device can flexibly send reference signals in different timeslots, thereby reducing a quantity of times of reference signal triggering and measurement result reporting, and improving efficiency of a communications system.

Abstract: Example transmission methods and apparatus are described. One example method includes: determining, by a network device, downlink control information (DCI), wherein the DCI includes a first request field. The first request field indicates sending reference signal from the network device to a terminal device, and the first request field triggers the terminal device to report a measurement result of the reference signal to the network device. The measurement result includes channel state information (CSI) and/or beam state information (BSI). The DCI is sent by the network device to the terminal.