Abstract: The system comprises a rainfall monitoring module, a self-calibration and rainfall measurement module, a central processing module, a water level monitoring module, and a drainage module. The rainfall monitoring module is configured to monitor rainfall and send a rainfall signal to the central processing module. The self-calibration and rainfall measurement module is configured to transmit ultrasonic signals and receive calibration echo signals to compute the calibrated flight time, and transmit ultrasonic signals to the water surface in the bucket and receive the measured echo signal reflected by the water surface to obtain the measured flight time under the control of the central processing module. The central processing module is configured to receive the rainfall signal to start the water level monitoring module and the self-calibration and rainfall measurement module, which are used to calculate the rainfall value and output it in a fixed format.

Abstract: A deep learning-based method for acoustic feedback suppression in a closed-loop system, the method includes applying an offline trained closed-loop system suppression model, processing an audio signal input, and then feeding the processed audio signal to a sound reproduction unit of the closed-loop system for playback to achieve acoustic feedback suppression, the closed-loop system suppression model being built based on deep learning; and modeling the closed-loop system, generating a unit impulse response of an acoustic feedback path by simulation, and calculating a maximum stable gain according to each simulated unit impulse response, and generating a closed-loop signal based on the maximum stable gain; generating an open-loop target signal under an open-loop condition by using the audio signal input to the closed-loop system; forming parallel training data of the model by putting the closed-loop signal and open-loop target signal together, and training the model by using the generated parallel training data

Abstract: A method for propagating a movement event message of a network entity, including: step 1) a network device maintaining a historical forwarded information list, wherein a network device capable of receiving a movement event message from an external system or device maintains an uplink port information table; step 2) after receiving the message, the network device performs matching using the table to obtain a forwarding port and forwarding information of the message, and constructs a movement event forwarding message using the information and forwards through the forwarding port; and step 3) after a device receives the message, searching for a matching forwarding port and forwarding information of the message in the information list, modifying the message using the forwarding information, and forwarding the modified message through the forwarding port. The method is able to propagate a movement event message to a network device responsible for related data transmission and forwarding.

Abstract: The system comprises a rainfall monitoring module, a self-calibration and rainfall measurement module, a central processing module, a water level monitoring module, and a drainage module. The rainfall monitoring module is configured to monitor rainfall and send a rainfall signal to the central processing module. The self-calibration and rainfall measurement module is configured to transmit ultrasonic signals and receive calibration echo signals to compute the calibrated flight time, and transmit ultrasonic signals to the water surface in the bucket and receive the measured echo signal reflected by the water surface to obtain the measured flight time under the control of the central processing module. The central processing module is configured to receive the rainfall signal to start the water level monitoring module and the self-calibration and rainfall measurement module, which are used to calculate the rainfall value and output it in a fixed format.

Abstract: A programmable network technology-based multi-homed network routing and forwarding method includes a data packet performing address-to-port matching a forwarding flow table address matching method; classifying addresses to matched ports corresponding to a destination address group; selecting a link information table and a port selection function, an appropriate port and a corresponding destination address group; cropping destination address groups of the remaining ports using an address filtering function and previous hop information carried in data to further crop the remaining destination address groups and addresses in the destination address group, a single destination address can be determined using a single address selection method, taking the single destination address using a universal routing and forwarding method to forward a packet to the destination address; otherwise, packaging the destination address group, and using a single address selection method to determine the single destination address h

Abstract: A system for providing exact communication delay guarantee of a request response for a distributed service, includes: a plurality of service provider nodes, a management node, and a plurality of proxy nodes; a set of users served by each service provider node constitutes a coverage area of the node; a communication delay between any user in the coverage area and the service provider node is less than a predetermined delay guarantee value; a physical network enables, according to division of the coverage areas of the service provider nodes, each user in the network to be located in a coverage area, and each user is served by at least one service provider node; and the coverage area includes a plurality of adjacent areas, and each service provider node has a plurality of adjacent nodes. In the system, each user can complete service request and response within a determined communication delay range.

Abstract: A query enhancement system for constructing an elastic field based on a time delay, including: dividing a network node to obtain a set of containers composed of several containers, wherein the containers are nested and each container includes a management node for performing node organization, neighbor maintenance and query services within the container. Further, a query enhancement method for constructing an elastic field based on a time delay includes: carrying out same-layer non-intersection full-coverage division on a network node to obtain a set of containers that are nested, and execute a query flow without a given low time delay requirement which uses an existing query technique and a nearby query flow with a given low time delay requirement which uses a distributed nearby querying method to carry out a nearby query; with an actual query time delay index Ti less than the requirement of an upper time delay limit Ts.

Abstract: A ICN packet forwarding method, including: step 1) maintaining, by a network forwarding device, a network entity ID association state table, which is used for recording a state of the binding relationship between a network entity ID and a network address to which the network entity is associatively bound; after a network address binding relationship of the network entity changes due to location movement thereof, adding or updating, by the network forwarding device, a record of the network entity in the network entity ID association state table according to notification information of the network entity; and step 2) upon receipt of an ICN packet, by the network forwarding device, determining whether the ICN packet needs to be processed, according to information of the current network entity ID association state table; if yes, forwarding after processing the ICN packet; otherwise, directly forwarding the packet.

Abstract: A method for generating a nested container with no intersection and same layer full coverage, including: giving a right undirected graph G(V, E, W) and network measurement index set {Ti} for dividing nodes in G, each network measurement index Ti corresponding to a Ci layer container set {Ci k}; deleting an edge weighing greater than Ti, and segmenting G into subgraphs, each a connected component; setting all nodes in the subgraph Gcm not in the Ci layer container as set L; selecting one node from set L as current anchor aj; starting with anchor aj, performing breadth-first search on all nodes in L and Ci+1 layer container containing aj with the path communicated therewith less than Ti forming a Ci layer container with anchor aj; setting j?=j+1, determining whether L is a null set; setting m=m+1, determining whether all subgraphs are processed; setting i=i?1, and determining whether i=1 is satisfied.

Abstract: A fast query method for a mobile network entity dynamic location information, using a distributed container hierarchical nested structure to process registration and queries for location information, includes: after a network entity connects to a network attachment point after moving and obtains a new network address assignment, determining a series of a registered container, and then registering new location information corresponding to where the network entity is currently located, the location information containing at least current network address information; when a network forwarding device learns that the network entity is currently un-reachable, querying the new location information of the network entity from the container where the network entity was located before moving; and the container where the network entity was located before moving, after receiving the query request, obtains the new location information of the network entity by searching in the container and in a peer neighboring container s

Abstract: A primary node of a seafloor observatory network based on constant current power supply is provided. The primary node is connected in series to a submarine cable of a backbone network. The primary node is connected to a shore station and an adjacent primary node by submarine cable terminal boxes, respectively. The primary node includes an underwater power supply and a communication control module. The underwater power supply is used for converting constant current power provided by the shore station into power for the primary node and some backup power, and outputting direct-current constant voltage power for the communication control module, and is further used for controlling the primary node to access and exit from the network. The communication control module is used for monitoring the internal state of the primary node by control system backup, and sending the state information and data to the shore station.

Abstract: A primary node of a seafloor observatory network based on constant current power supply is provided. The primary node is connected in series to a submarine cable of a backbone network. The primary node is connected to a shore station and an adjacent primary node by submarine cable terminal boxes, respectively. The primary node includes an underwater power supply and a communication control module. The underwater power supply is used for converting constant current power provided by the shore station into power for the primary node and some backup power, and outputting direct-current constant voltage power for the communication control module, and is further used for controlling the primary node to access and exit from the network. The communication control module is used for monitoring the internal state of the primary node by control system backup, and sending the state information and data to the shore station.

Abstract: A method for propagating a movement event message of a network entity, including: step 1) a network device maintaining a historical forwarded information list, wherein a network device capable of receiving a movement event message from an external system or device maintains an uplink port information table; step 2) after receiving the message, the network device performs matching using the table to obtain a forwarding port and forwarding information of the message, and constructs a movement event forwarding message using the information and forwards through the forwarding port; and step 3) after a device receives the message, searching for a matching forwarding port and forwarding information of the message in the information list, modifying the message using the forwarding information, and forwarding the modified message through the forwarding port. The method is able to propagate a movement event message to a network device responsible for related data transmission and forwarding.

Abstract: A mobile signaling management method uses a distributed container with a hierarchical nested structure to process the registration and query of location information of user equipment, including: first user equipment connected to a first network device, to obtain a first network address allocated by the first network device; the first user equipment registering to a first mobility management node binding information between the name of the first user equipment and the first network address, the first mobility management node being a node where the first user equipment is located after movement; the first user equipment updating to a second network device the binding information between the name of the first user equipment and the first network address; and the first user equipment updating to second user equipment at the communication peer end the binding information between the name of the first user equipment and the first network address.

Abstract: A big data processing method based on a deep learning model satisfying K-degree sparse constraints comprises: step 1), constructing a deep learning model satisfying K-degree sparse constraints using an un-marked training sample via a gradient pruning method, wherein the K-degree sparse constraints comprise a node K-degree sparse constraint and a level K-degree sparse constraint; step 2), inputting an updated training sample into the deep learning model satisfying the K-degree sparse constraints, and optimizing a weight parameter of each layer of the model, so as to obtain an optimized deep learning model satisfying the K-degree sparse constraint; and step 3), inputting big data to be processed into the optimized deep learning model satisfying the K-degree sparse constraints for processing, and finally outputting a processing result. The method in the present invention can reduce the difficulty of big data processing and increase the speed of big data processing.

Abstract: A supported lightweight content filtering method for a hybrid storage system, the method includes: using an LRU queue and a Hash table to filter content, the access frequency of which is lower than a specified threshold (T), the time complexity being O(1). An LRU queue and a Hash table are used to support a quick content filtering method applicable to a hybrid storage system to filter content, the number of times same is accessed being lower than a specified threshold, and to use scarce storage resources to cache hot content that will be frequently accessed, thus improving a cache hit ratio.

Abstract: A ICN packet forwarding method, including: step 1) maintaining, by a network forwarding device, a network entity ID association state table, which is used for recording a state of the binding relationship between a network entity ID and a network address to which the network entity is associatively bound; after a network address binding relationship of the network entity changes due to location movement thereof, adding or updating, by the network forwarding device, a record of the network entity in the network entity ID association state table according to notification information of the network entity; and step 2) upon receipt of an ICN packet, by the network forwarding device, determining whether the ICN packet needs to be processed, according to information of the current network entity ID association state table; if yes, forwarding after processing the ICN packet; otherwise, directly forwarding the packet.

Abstract: A fast query method for a mobile network entity dynamic location information, using a distributed container hierarchical nested structure to process registration and queries for location information, includes: after a network entity connects to a network attachment point after moving and obtains a new network address assignment, determining a series of a registered container, and then registering new location information corresponding to where the network entity is currently located, the location information containing at least current network address information; when a network forwarding device learns that the network entity is currently un-reachable, querying the new location information of the network entity from the container where the network entity was located before moving; and the container where the network entity was located before moving, after receiving the query request, obtains the new location information of the network entity by searching in the container and in a peer neighboring container s

Abstract: A programmable network technology-based multi-homed network routing and forwarding method includes a data packet performing address-to-port matching a forwarding flow table address matching method; classifying addresses to matched ports corresponding to a destination address group; selecting a link information table and a port selection function, an appropriate port and a corresponding destination address group; cropping destination address groups of the remaining ports using an address filtering function and previous hop information carried in data to further crop the remaining destination address groups and addresses in the destination address group, a single destination address can be determined using a single address selection method, taking the single destination address using a universal routing and forwarding method to forward a packet to the destination address; otherwise, packaging the destination address group, and using a single address selection method to determine the single destination address h

Abstract: A mobile signaling management method uses a distributed container with a hierarchical nested structure to process the registration and query of location information of user equipment, including: first user equipment connected to a first network device, to obtain a first network address allocated by the first network device; the first user equipment registering to a first mobility management node binding information between the name of the first user equipment and the first network address, the first mobility management node being a node where the first user equipment is located after movement; the first user equipment updating to a second network device the binding information between the name of the first user equipment and the first network address; and the first user equipment updating to second user equipment at the communication peer end the binding information between the name of the first user equipment and the first network address.