Abstract: A device authentication method, a service access control method, a device, and a non-transitory computer-readable recording medium are provided. In the device authentication method, an authentication request device issues an authentication request transaction in a distributed ledger, and an authentication response device reads the authentication request transaction in the distributed ledger and performs authentication. Thus, no third-party authentication center or coordinate device is required to participate in an authentication handshake process, thereby reducing deployment overhead of an authentication system and improving efficiency of authentication and access service control.

Abstract: Disclosed are a method and apparatus for processing physiological signals. The method is inclusive of steps of obtaining the physiological signals; grouping the physiological signals based on their sampling frequencies and/or generation mechanisms, so as to acquire grouping results; and compressing, based on the grouping results, each group of physiological signals.

Abstract: A method for managing a consortium chain data structure network, a management node, and a non-transitory computer-readable recording medium are provided. The consortium chain data structure network includes a first network that maintains a first chain data structure for recoding management data, and a second network that maintains a second chain data structure for recording user data. A management node for management consensus of the consortium chain data structure network only accesses the first network. In the method, the management node receives a management request message sent by a requesting node, verifies the management request message, and processes the management request message in response to successful verification on the management request message. A data block in the first chain data structure is generated based on a result of the processing.

Abstract: Disclosed is a tampering detection method applied to one of multiple entities involved in a paper copy transfer process. The method includes steps of obtaining an optically readable copy of a paper copy; acquiring a verification code detection result of the optically readable copy; if the verification code detection result contains no verification code, then determining that the paper copy has been tampered with; and in a case where the verification code detection result contains a verification code and a print transaction ID associated with the verification code, attaining, based on the print transaction ID, a print transaction corresponding to the print transaction ID, and performing comparison on the optically readable copy and information contained in the print transaction so as to determine whether the paper copy has been tampered with. Each of the plural entities corresponds to a node in a distributed data network.

Abstract: A device authentication method, a service access control method, a device, and a non-transitory computer-readable recording medium are provided. In the device authentication method, an authentication request device issues an authentication request transaction in a distributed ledger, and an authentication response device reads the authentication request transaction in the distributed ledger and performs authentication. Thus, no third-party authentication center or coordinate device is required to participate in an authentication handshake process, thereby reducing deployment overhead of an authentication system and improving efficiency of authentication and access service control.

Abstract: Embodiments of this disclosure provide an information transmission method and apparatus and electronic equipment. The information transmission method apparatus is used for transmitting a network topology information frame (TI frame) of network topology information, the apparatus including: a transmitting/receiving unit configured to transmit and/or receive a media access control (MAC) layer frame of a network protocol; the network topology information frame (TI frame) is loaded into a payload of the MAC layer frame. According to this disclosure, transmission modes of the network topology information may be made more flexible.

Abstract: Embodiments of this disclosure provide a node diagnosis apparatus and system.

Abstract: Embodiments of this disclosure provide an information transmission method and apparatus and electronic equipment. The information transmission method apparatus is used for transmitting a network topology information frame (TI frame) of network topology information, the apparatus including: a transmitting/receiving unit configured to transmit and/or receive a media access control (MAC) layer frame of a network protocol; the network topology information frame (TI frame) is loaded into a payload of the MAC layer frame. According to this disclosure, transmission modes of the network topology information may be made more flexible.

Abstract: Embodiments of this disclosure provide a node diagnosis apparatus and system.

Abstract: A partition based slot assignment method and apparatus, applying to other nodes than a sink node in a multi-hop sensor network including: transmitting a detection request packet including subtree information of a subtree of the sink node, using a node one-hop away as a root node; determining whether other nodes and the sink node are in the same subtree according to received detection request packets transmitted by other nodes including subtree information of subtrees of the other nodes; and storing the subtree information of the subtrees of other nodes in a local collision table if the other nodes and sink node are not in a same subtree, and transmitting the table to a parent node of the sink node. By changing a slot assignment in a larger network into independent slot assignments in smaller networks, a slot assignment problem resulting from a large number of nodes may be solved.

Abstract: Embodiments of this disclosure provide an information aggregation method and apparatus and a system. the method includes: a requestor generates an aggregation request, the aggregation request comprising a source address, a destination address, a requested target device, requested information, and a requested aggregation action; wherein, the source address is an address of the requestor, and the destination address is an address of a receiver, there existing a security relationship between the requestor and the receiver; the requestor encrypts the aggregation request according to the security relationship between the requester and the receiver; and the requestor transmits the encrypted aggregation request to the receiver, and records the aggregation request in a request list. With the embodiments of this disclosure, information may be aggregated between mutually trusted devices in a secure manner. Hence, a device may aggregate information for an untrusted device without security concern.

Abstract: Embodiments of this disclosure provide a method and apparatus for evaluating node performance and a system. The method includes: real-time communication related information of a network node is collected; normalization on the test data within the predetermined period of time is performed by using preobtained best data vectors and worst data vectors, so as to obtain normalized multi-dimensional vectors of the test data within the period of time; and the normalized multi-dimensional vectors of the test data within the period of time is weighted, distance from the weighted normalized multi-dimensional vectors to the best data vectors is calculated, and a grade of the network node is determined according to the distance and a predefined monotonically decreasing function.

Abstract: Embodiments of this disclosure provide a parameter determination method, an interference classification and identification method and apparatuses thereof. Wherein, the interference classification and identification method includes: for Q moments, detecting K first network parameters at each moment, so as to obtain a third parameter sequence constituted by the K first network parameters at the Q moments; and respectively determining classes of interference states existing at the Q moments according to the third parameter sequence and a hidden Markov model. Furthermore, the embodiments provide a method for determining parameters in the above hidden Markov model. With the method of the embodiments, the parameters in the above hidden Markov model may be easily determined. Wherein, by simplifying a parameter sequence based on a threshold value, the parameter sequence is made to be a limited set, which may lower the complexity of determining the parameters in the hidden Markov model.

Abstract: Embodiments of this disclosure provide a trouble diagnosis method and apparatus and a system. The method includes: acquiring channel-related information on a coordinator and terminal equipment in communication with the coordinator; selecting multiple indices in the channel-related information, and calculating statistical values of the multiple indices in a predetermined period of time; and performing trouble diagnosis by using the statistical values and pre-stored training data, so as to obtain a trouble diagnosis result corresponding to the period of time.

Abstract: A stepwise slot allocation method and apparatus applicable to a node in a wireless network and includes: by the node, determining an initial boundary value of a slot for slot allocation at a current slot allocation stage; calculating a slot length needed by the node at the current slot allocation stage; and selecting a slot index needed by the current slot allocation stage starting from the initial boundary value. By using the method, the slot allocation is combined with an amount of traffic in the network, and slot index of each node is more proper. And it is ensured that one packet corresponds to a slot, and a case will not occur where a slot is reserved but not used.

Abstract: Embodiments of the present invention provide a trouble detecting apparatus and system. Wherein, the trouble detecting apparatus includes: a first acquiring unit configured to periodically acquire information relating to communication and/or a channel; a first counting unit configured to statistically calculate the acquired information, so as to obtain first statistic data; and a first detecting unit configured to perform trouble detection by using the first statistic data and prestored training data, so as to obtain a trouble detection result. With the apparatus and system of the embodiments, not only multiple possible communication troubles may be detected, but also the signaling overhead is relatively low, thereby achieving low complexity.

Abstract: Embodiments of the present invention provide a method and apparatus for assigning slot. The method includes: constructing an HELLO packet, the HELLO packet including GTS request information of a local node or including GTS request information of the local node and GTS request information of at least one neighboring node within a collision domain of the local node; and broadcasting the HELLO packet, so that a node receiving the HELLO packet performs slot reservation according to information contained in the HELLO packet. With the method and apparatus for assigning slot provided by the embodiments of the present invention, no central controller is needed any longer in comparison with a centralized slot assignment method, complexity of calculation is lowered, and utilization of slot is improved.

Abstract: A method and apparatus for assigning a slot, including: constructing a HELLO packet, the packet including slot request information of a local node and/or slot request information of a neighbor node of the local node; and transmitting the packet, so that a node receiving the packet authenticates a reservation slot requested by a sender; wherein the slot request information of the local node includes an address of the local node and of a receiving node of a data packet to be transmitted and an index of the reservation slot requested by the local node; and the slot request information of the neighbor node includes an address of the neighbor node, an address of a receiving node of a data packet to be transmitted, an index of a reservation slot requested by the neighbor node, and confirmation information of the reservation slot requested by the neighbor node.

Abstract: Embodiments of the present invention provide a method and apparatus for assigning slot. Wherein the method includes: constructing an HELLO packet, the HELLO packet including correlation information of multiple reservation slots requested by a local node, or including correlation information of multiple reservation slots requested by a local node and correlation information of multiple reservation slots requested by at least one neighbor node of the local node; and transmitting the HELLO packet, so that a node receiving the HELLO packet authenticates the multiple reservation slots requested by the local node according to information contained in the HELLO packet. With the method and apparatus of the embodiments of the present invention, utilization of slots is improved.

Abstract: A method for transmitting a beacon frame includes: determining an operating channel; switching to an overlapped large channel if no cluster exists in the operating channel and the large channel overlapped therewith has a bandwidth larger than that of the operating channel, determining cluster control information and a beacon scheduling period of the overlapped large channel, and transmitting a beacon frame including the cluster control information at a beacon scheduling period in each beacon interval of the overlapped large channel; and switching to the operating channel, building a cluster in the operating channel, determining cluster control information and a beacon scheduling period of the operating channel, a cluster interval of the operating channel being different from that of the overlapped large channel, and transmitting a beacon frame including the cluster control information of the operating channel at a beacon scheduling period in each beacon interval of the operating channel.