Abstract: A package structure includes a first semiconductor die, a first insulating encapsulation, a thermal coupling structure, and a heat dissipating component thermally coupled to the first semiconductor die through the thermal coupling structure. The first semiconductor die includes an active side, a rear side, and a sidewall connected to the active side and the rear side. The first insulating encapsulation extends along the sidewall of the first semiconductor die and includes a first side substantially leveled with the active side, a second side opposite to the first side, and topographic features at the second side. The thermal coupling structure includes a metallic layer overlying and the rear side of the first semiconductor die and the topographic features of the first insulating encapsulation. A manufacturing method of a package structure is also provided.

Abstract: Embodiments of this application relate to the communication field, and provide a synchronization signal block transmission method and an apparatus. The method includes: A first terminal device generates a sidelink synchronization signal block and sends the sidelink synchronization signal block to a second terminal device, where the sidelink synchronization signal block includes a PSBCH, an SPSS, and an SSSS, where the PSBCH includes M OFDM symbols in time domain, the PSBCH includes a DMRS, the DMRS includes K OFDM symbols of the M OFDM symbols in time domain, and the DMRS is mapped at an interval of n?1 subcarriers in frequency domain; and the SPSS or the SSSS includes 2 OFDM symbols in time domain, and the PSBCH, the SPSS and the SSSS includes N RBs in frequency domain; includes N RBs in frequency domain.

Abstract: A signal sending method includes mapping, by a transmit end, modulation symbols in delay-time domain to obtain a first delay-time domain symbol matrix; and performing, by the transmit end, first preset processing on the first delay-time domain symbol matrix to obtain a time domain sampling point, and sending the time domain sampling point after pulse shaping.

Abstract: The present disclosure provides an N protein epitope mutation marker for preparing an epitope deletion-marked vaccine strain of type II porcine reproductive and respiratory syndrome virus (PRRSV) and use thereof, belonging to the technical field of biological products. In the mutation marker, one or more amino acids are mutated based on an epitope sequence at positions 92 to 103 of a C-terminal of an N protein of the type II PRRSV; and the epitope mutation marker has an amino acid sequence shown in SEQ ID NO: 1, where X1 is selected from the group consisting of T, P, and A; and X2 is selected from the group consisting of V and A.

Abstract: A semiconductor device is provided. The semiconductor device includes a carrier, an electronic component, an adapter, a first metal wire and a second metal wire. The electronic component is disposed on the carrier. The adapter is disposed on the carrier. The first metal wire connects the electronic component and the adapter. The second metal wire connects the adapter and the carrier.

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: A synchronization signal block sending and receiving method and apparatus are described. The method includes a first terminal determining, based on a correspondence between information about locations of M antenna panels and P synchronization signal blocks of the first terminal and information about locations of N antenna panels, a synchronization signal block corresponding to each of the N antenna panels, where the information about the locations of the M antenna panels is used to indicate the locations of the M antenna panels on the first terminal, the N antenna panels are included in the M antenna panels, N is less than or equal to M, M, N and P are positive integers, and P is an integer multiple of M. Then, the first terminal separately sends, by using each of the N antenna panels, the synchronization signal block corresponding to each of the N antenna panels. This application is applicable to a V2V scenario.

Abstract: This application discloses a method for identifying an intelligent surface device, a communication device, and an intelligent surface device, which relate to the field of wireless communication technologies. The method for identifying an intelligent surface device in embodiments of this application includes: sending, by a first communication device, a first signal; and obtaining, by the first communication device, identification information related to an intelligent surface device, where the identification information is information obtained by detecting an echo signal of the first signal by the first communication device, or information that is obtained by detecting an echo signal of the first signal by a second communication device and then is forwarded to the first communication device.

Abstract: A method and an apparatus for feeding back channel information of a delay-Doppler domain, and an electronic device. The method for feeding back channel information of a delay-Doppler domain in embodiments of this application includes: a first device sends target feedback information to a second device, where the target feedback information is associated with target channel information, the target channel information is all or part of channel information of a delay-Doppler domain obtained by the first device performing channel estimation on a target signal, and the target signal is a signal sent by the second device or a third device to the first device.

Abstract: A synchronization signal transmission method and a terminal device are disclosed, so that the terminal device can accurately determine a symbol location of a primary synchronization signal. The techniques may be used in an internet of vehicles. The method in this application includes: generating, by a first terminal device, a synchronization signal block, where the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, each of the M primary synchronization signals corresponds to one symbol interval set, one symbol interval set in M symbol interval sets includes N symbol intervals between one primary synchronization signal in the M primary synchronization signals and the N secondary synchronization signals, any two of the M symbol interval sets do not include a same symbol interval, and M and N are positive integers greater than or equal to 2; and sending, by the first terminal device, the synchronization signal block.

Abstract: An access method and apparatus, a communication device, and a non-transitory computer-readable medium, are provided. The method includes: obtaining, by a terminal, a. first delay Doppler domain data set; and accessing, by the terminal, P first network side devices based on a detection result of the first delay Doppler domain data set, where the P first network side devices are any of the following: P first network side devices corresponding to P first resource locations, where the P first resource locations are P resource locations where peak values are detected on the first delay Doppler domain resource block; or P first network side devices corresponding to P first pilot signals, where the P first pilot signals are P pilot signals where peak values are detected.

Abstract: A method for sending a radar and communication integrated signal, a method for receiving a radar and communication integrated signal, and a communication device. The method for sending a radar and communication integrated signal includes: determining a polarization state of a first signal according to a communication information bit to be sent; and sending the first signal according to the polarization state of the first signal. The first signal is radar signal.

Abstract: A pilot transmission method and apparatus, a device, and a storage medium are provided. The method is performed by a target communication device, including: determining a target configuration parameter of a pilot; and mapping, based on the target configuration parameter, the pilot to a pilot resource block in a delay-Doppler domain for transmission.

Abstract: A broadcast signaling method performed by a network device having a protocol stack of with first and second protocol layers where the second protocol layer is below the first protocol layer, the method including generating, by the network device, first information at the first protocol layer, generating, by the network device, second information at the second protocol layer, where the second information is used to determine a time-frequency resource corresponding to one or more synchronization signal blocks (SSBs), processing, by the network device, the first information and the second information at the second protocol layer, and sending, by the network device to a terminal device by using a physical broadcast channel (PBCH) in the one or more SSBs, data obtained after second protocol layer processing.

Abstract: This application discloses a pilot transmission method and apparatus, a network side device, and a storage medium. The method is applied to a network side device, and the method includes: performing orthogonal processing on a pilot base sequence, and determining pilots corresponding to a plurality of antenna ports; and mapping the pilots corresponding to the plurality of antenna ports to a pilot resource block, where a pilot corresponding to one antenna port is mapped to one pilot resource block.

Abstract: This application discloses a random access method and apparatus, a terminal, and a network side device, belonging to the field of communication technologies. The method includes: sending a random access first target message, where a transmission parameter of the first target message is associated with position related information of the terminal, or the first target message carries position related information of the terminal, where the transmission parameter of the first target message includes at least one of: sequence information of the first target message; time domain resource information of the first target message; frequency domain resource information of the first target message; and sequence information of a demodulation reference signal included in the first target message.

Abstract: Disclosed in this application are a pilot transmission method and apparatus, a network-side device, and a storage medium. The method is applied to a network-side device and includes: determining at least one pilot resource block in a delay-Doppler domain; and mapping pilots corresponding to a plurality of antenna ports to the at least one pilot resource block for transmission, where a pilot corresponding to one antenna port is mapped to one pilot resource block in the at least one pilot resource block.

Abstract: This application discloses an information transmission method and apparatus, a device, and a storage medium, and pertains to the communications field. The method is applied to a communications device and includes: obtaining channel quality of a plurality of antennas; determining an antenna working mode according to the channel quality; and performing information transmission by using the antenna working mode, where the antenna working mode includes a MIMO mode, an FTN mode, or a MIMO-FTN mode in which an FTN manner is used for a same intra-antenna port group in the plurality of antennas and a MIMO manner is used for different inter-antenna port groups, where each antenna port group includes at least one antenna.

Abstract: According to the method and the apparatus, a first device generates a first synchronization sequence and/or a second synchronization sequence, where the first synchronization sequence is different from any sequence of a third synchronization sequence set, and/or the second synchronization sequence is different from any sequence of a fourth synchronization sequence set. The method and the apparatus may be applied to V2X, LTE-V, V2V, an internet of vehicles, MTC, the IoT, LTE-M, M2M, the internet of things, and the like.