Abstract: A security decision negotiation method and a network element are applicable to various communication systems, such as an IoT system, an LTE system, a 5G system, an MTC system, an M2M system, a D2D system, a V2X system, and a WLAN system (such as Wi-Fi). The method includes: A first network element determines a security decision based on a security requirement of a requester and a security capability of a capability provider, and the first network element sends a message including the security decision.

Abstract: A communication method includes: A terminal device determines a first identifier and first domain information, where the first identifier includes an encrypted identifier of the terminal device, and the first domain information indicates a domain in which a network element that manages data information of the terminal device is located. The terminal device sends the first identifier and the first domain information to a first network element. The method may be implemented with an apparatus.

Abstract: A contribution identification method for noise at a boundary of an urban substation in the present disclosure includes the following steps: describing site elements and surrounding environmental elements of an urban substation; measuring and recording a background noise value at each boundary of the urban substation; determining an orientation of a specific sound source of the urban substation, and setting a corresponding measurement point at each boundary of the urban substation; obtaining a spectrum of each specific sound source; analyzing a contribution of each intra-substation sound source of the urban substation to noise at the boundary of the substation; analyzing a noise level of each sound source measurement point in the urban substation; recording measured data during noise measurement, and correcting a noise measurement result; and generating a test report.

Abstract: Embodiments of this application relates to a communication method and apparatus. An example method is applied to a communication system including at least one blockchain. The method includes: A terminal device generates a first request, where the first request includes information about a first blockchain, and is used to request to access the first blockchain. The terminal device sends the first request to a first network element. The first request is used to request to access the first blockchain.

Abstract: A communication method integrated with trustworthiness measurement, including: a first network element sends a first data packet, where the first data packet includes first request information, and the first request information is used to request to verify whether a second network element is trusted. The first network element receives a second data packet, where the second data packet includes first response information, and the first response information is used to verify whether the second network element is trusted.

Abstract: A grating adjustment apparatus includes a first electrode layer, a second electrode layer and a first substrate and a second substrate that are opposite to each other; the grating adjustment apparatus further includes a plurality of first driving lines, a plurality of second driving lines and a plurality of grating units arranged in the first direction, and is configured as: when the grating adjustment apparatus is powered on, the grating unit is capable of forming a light transmission unit and a shading unit, and opening positions and/or opening ratios of the grating unit are adjustable; and the plurality of grating units are divided into at least one group; for the grating units in the same group, at least two of the first sub-electrodes are electrically connected to different first driving lines, and at least two of the second sub-electrodes are electrically connected to different second driving lines.

Abstract: This application provides a communication method integrated with trusted measurement and an apparatus. The method includes: A first network element sends a first request message, where the first request message is for requesting to verify whether terminal device is trusted. The first network element receives a first response message, where the first response message is for verifying whether the terminal device is trusted.

Abstract: A method includes: a network function service consumer sends a service request message, where the service request message is used to request to obtain a service provided by a network function service provider. The network function service consumer receives a service response message, where the service response message indicates whether the service request message is accepted, and further indicates a result of trustworthiness verification of the network function service consumer. The method helps the network function service provider verify, before providing the network service, an identity of the network function service consumer and determine whether the network function service consumer is trusted, to help improve security of communication between core network elements and improve security of a core network device.

Abstract: A trusted attestation method and a communication apparatus are provided. The method includes: A first node obtains information about a first blockchain, and the first node determines attestation information based on the information about the first blockchain. The attestation information is used to remotely attest whether the first node is trusted. The information about the first blockchain may be used as a common random number that is generated by the first blockchain based on a consensus and that can be used by a plurality of nodes. Therefore, the information about the first blockchain may be used as a challenge value for performing security measurement by the plurality of nodes. The attestation information may be verified by any verifier to implement measurement for one time and verification for a plurality of times, so that the first node does not need to establish a separate “challenge-response” procedure with each verifier.

Abstract: The present invention is directed to compositions having chair-side handling properties comprising polymers for dental, soft tissue and combination products applications.

Abstract: This application discloses a cyber threat deception method and system, and a forwarding device. The forwarding device obtains a deception target set, where the deception target set includes a deception target, and the deception target includes an unused internet protocol (IP) address or an unopened port number on a used IP address. The forwarding device receives an IP packet from a host, and determines whether a destination party that the IP packet requests to access belongs to the deception target set. If the destination party that the IP packet requests to access belongs to the deception target set, the forwarding device sends the IP packet to a honeypot management server. The forwarding device receives a response packet, returned by the honeypot management server, of the corresponding IP packet. The forwarding device sends the response packet to the host.

Abstract: A display panel and a driving method thereof, and a display device. The display panel includes a substrate and a plurality of pixel circuits arranged in an array on the substrate, each of the plurality of pixel circuits includes a pixel driving chip and at least one light-emitting element electrically connected to the pixel driving chip, and the pixel driving chip is configured to receive and store a data signal and drive the at least one light-emitting element to emit light according to the data signal.

Abstract: This application provides a communication method and apparatus, to implement blockchain-based communication. In the method, a first communication apparatus sends a first message to a second communication apparatus, where the first message is for requesting to set up data consensus protocol DCP initial access, and the first message includes an identifier of the first communication apparatus and a blockchain identifier. The first communication apparatus receives a second message from the second communication apparatus, where the second message indicates a consensus mode set for blockchain communication. The first communication apparatus sends a third message to the second communication apparatus, where the third message indicates first consensus mode information in the consensus mode set. The first communication apparatus receives a fourth message from the second communication apparatus, where the fourth message indicates that the DCP initial access succeeds or fails.

Abstract: A first blockchain node determines a block type of a first block and determines the first block based on the block type of the first block. The first blockchain node sends the first block to a second blockchain node and the second blockchain node determines the block type of the first block. The second blockchain node performs block verification on the first block based on the block type of the first block. After verification succeeds, the second blockchain node updates a first blockchain, where the block type is a first type or a second type. The first blockchain node and the second blockchain node are configured to maintain the first blockchain, and the first blockchain includes at least one first-type block and at least one second-type block.

Abstract: Embodiments of the present invention disclose a contract management method, apparatus, and system. The method includes: A communication device sends a registration request to a management network element. The registration request includes service request information, and the service request information indicates a specific service. After receiving the registration request from the communication device, the management network element determines a first smart contract based on the service request information in the registration request. Then, the management network element sends the first smart contract to the communication device. According to embodiments of the present invention, service waiting time of a user may be reduced.

Abstract: A filtering-based power supply apparatus used in a power sourcing equipment (PSE) includes a power supply control circuit and an adaptive filter circuit. The power supply control circuit includes a power supply channel and a detection module. The power supply channel includes a control switch configured to control on and off of the power supply channel. The detection module is configured to send a detection signal to the power supply channel to detect whether a peer device connected to the power supply channel is a valid powered device. The control switch is turned off in a detection process of the power supply channel. The adaptive filter circuit is configured to filter noise in the detection signal in the detection process of the power supply channel.

Abstract: This application relates to a communication method and apparatus. A first node sends a first message. The first message includes at least one of request information and information about a first transaction, the request information is used to request to modify a second transaction, the first transaction is a modified second transaction, and the second transaction is stored in a first blockchain. The first blockchain includes N blocks, an ith block in the first blockchain includes a first field and a second field, and the second field is used to store a second preset value or a second hash value of a previous block whose block height is the same as a block height of the ith block. Editability of the block is implemented by using the first hash value, to implement editability of the blockchain.

Abstract: A method includes sending first information that includes a private key signature of a first blockchain to another apparatus in response to a consensus of another node in the first blockchain network on the first information being successful. The first blockchain includes an apparatus. The second blockchain includes the another apparatus. The method further includes receiving second information that includes a private key signature of the second blockchain network. The second information corresponds to the first information. The method further includes recording the second information on the first blockchain in response to verification on the private key signature of the second blockchain network being successful.

Abstract: A sound barrier system for reducing electric field distortion includes a wall unit and a sound barrier unit. The sound barrier unit includes a sound barrier plate that, from top to bottom, includes an arc-shaped part, an inclined part, and a vertical part that are integrally formed, wherein a center of a circle of the arc-shaped part points towards an interior of a power facility, the inclined part is tilted away from the power facility from top to bottom and is tangent to the arc-shaped part, and a lower end of the vertical part is arranged on a top of the wall unit. The sound barrier system further includes an energy supply pipeline, a security device, and an online monitoring device. The sound barrier system can be easily manufactured, and not only can improve an acoustic environment around a substation, but also can reduce an amplitude of an electric field.

Abstract: According to a communication method, a first communication device obtains a network identifier of a second communication device, generates a query request, sends the query request to a blockchain service device, and receives first blockchain information from the blockchain service device. The query request is used to request the first blockchain information corresponding to the network identifier of the second communication device. The first blockchain information includes a first blockchain identifier, or the first blockchain information includes a first transaction identifier set. The first transaction identifier set includes one or more first transaction identifiers. The first blockchain information is used by the first communication device to query transaction data of the second communication device in a blockchain.