80results about How to "Improve delivery success rate" patented technology

An improved routing method based on the social correlation degree in a delay tolerant network aims at resolving the problem that routing efficiency is low due to intermittent connectivity and long delay in the delay tolerant network, and nodes with social selfishness in nodes in the social network refuse to provide retransmission service. The improved routing algorithm SLABR (Social Link Awareness Based Routing) based on the social correlation is provided. The method includes calculating the social correlation degree to construct friend node groups according to meeting historical information between the nodes by utilizing the social network analyzing method, adopting different retransmission strategies in the groups and between the groups and possibly reducing delay while improving message passing success ratio with small expenses. Simulation results prove that the algorithm improves message passing success ratio, reduces transmission delay and further improves routing efficiency compared with the existing mechanism.

The invention relates to the technical field of telematics, and provides a telematics network node screening and accessibility routing construction method based on a self-encoding network. The entire routing mechanism comprises data preprocessing, self-encoding network training and node screening algorithm realization. The self-encoding network can provide a high-dimensional continuous data space and bidirectional mapping of a low-dimensional nested structure. The self-encoding network can be used to excavate and extract the related characteristics of node information in a large-scale road transport network. Dimension lowering is carried out on original information. The amount of data in a data transmission process is reduced. An effective way is provided for screening key nodes in the network. According to the invention, a great node screening method is provided for a highway scene, and the network performance is effectively improved.

The invention relates to a routing method of a delay tolerant network and particularly relates to a routing method of a delay tolerant network based on degree of intimacy forwarding, and belongs to the technical field of computer networks. The method comprises the following steps: 1, once a node carrying datagram encounters other nodes, respectively calculating the direct and indirect degrees of intimacy of two nodes and the target node; 2, carrying out routing decision according to a result calculated in the step 1; 3, repeating the steps 1 and 2 until the datagram is transferred to the target node or TTL of the datagram is reduced to 0. According to the routing method of the delay tolerant network based on degree of intimacy forwarding provided by the invention, the degrees of intimacy between two pairs of nodes in the network are depicted by applying a Poisson distribution model to the delay tolerant network and combining historical information that the nodes encounter in the network and the Poisson distribution model. Routing decision is carried out by comparing the degree of intimacy of the nodes and the target node once the two nodes encounter in the network, so that the transfer success rate of the datagram of the network is maintained at a relatively high level.

The invention provides a three-dimensional code generating and parsing method and a three-dimensional code generating and parsing device. The three-dimensional code generating method comprises the following steps: presetting a two-dimensional code data length and a three-dimensional code output format, reading binary data flow information corresponding to target page information, splitting the binary data flow into subsectional binary data flows according to the preset two-dimensional code data length, generating the subsectional binary data flows into two-dimensional codes, and combining the two-dimensional codes into a three-dimensional code according to the preset three-dimensional code output format. The three-dimensional code parsing method comprises the following steps: scanning and parsing the three-dimensional code, wherein the three-dimensional code comprises the two-dimensional codes, frame frequencies for outputting the two-dimensional codes, and a sequence for outputting the two-dimensional codes; according to the frame frequencies of the two-dimensional codes in the parsed three-dimensional code and the sequence for outputting the two-dimensional codes, parsing information in the two-dimensional codes, and combining the information of the two-dimensional codes to obtain the target page information.

The invention relates to an intelligent distribution path planning method based on time reservation. According to the intelligent distribution path planning method based on time reservation, expresses are divided into A class orders and B class orders according to the client distribution time requirements and a brand-new distribution scheduling method is designed based on the division result, and a shortest path planning design method is introduced through combination of the load of each distribution vehicle so that each distribution vehicle is enabled to perform distribution according to the optimal path planning, accurate distribution for the A class orders and the B class orders can be realized, the customized distribution service can be provided for the user, the success rate of distribution can be enhanced and the distribution cost can be saved.

The invention provides a node transmission capability based spray and focus routing protocol method. The method comprises a multi-copy spray stage and a single-copy focus stage. The multi-copy spray stage indicates that possible routes are searched by spraying the message copies to a network when a node owns multiple copies of a certain message. According to the method, the transmission capabilities of nodes for the messages are measured through factors such as the vehicle speed, change rates of encountering nodes and residual cache sizes, and message spray tasks are allocated proportionally according to the transmission capabilities. The single-copy focus stage indicates that the node is allowed to forward the unique message copy to a relay node with the transmission capability higher than that of the node when the node owns the copy of a certain message. The forwarding of the message is controlled by taking the node transmission capability as a comparison condition. According to a cache management strategy designed by the method, the redundant messages are eliminated through adoption of a delivery message confirmation mechanism; and the sending sequence of the messages is determined by taking the residual survival time of the messages and the number of the copies capable of being copied as message allocation priorities.

A car-networking node selecting method based on BS-TS and autoencoder network, and an accessibility routing mechanism thereof belong to the technical field of car networking. According to a problem of irregular distribution of sparse and dense networks in urban roads caused by time and space distribution differences of car-networking nodes, an appropriate node selecting method is provided for different time points and different road sections. Combined with the problems such as low interconnection coupling degree present in car-networking large-scale heterogeneous network, an accessibility routing mechanism suitable for urban roads is designed. By studying a block dividing method of a large-scale car-networking road network diagram, the method in the present invention divides the large-scale car networking into serval small-scale networks, comprehensively considers road sections having similar network density distribution according to an intra-network node number variation trend similarity algorithm and reduces complexity for processing. The routing mechanism does not only have higher success rate for data packet transmission, but also has better stability.

The invention discloses a life ring throwing mount and an unmanned aerial vehicle. The life ring throwing mount comprises a connecting frame and a plurality of peripherally arranged life ring mount assemblies around the center of the connecting frame, wherein each life ring mount assembly comprises a mounting plate fixedly connected onto the connecting frame, a throwing mechanism mounted on the mounting plate, and a life ring arranged below the throwing mechanism. The unmanned aerial vehicle comprises a vehicle body and a mainboard in communication connection with a ground station, wherein the connecting frame is fixed at the bottom of the vehicle body, and steering engines inside all the life ring mount assemblies are respectively connected onto the mainboard. A plurality of life rings can be thrown simultaneously, the throwing structures are simple, and mechanical breakdown is unlikely to appear.

The present invention provides a method and device for providing order distribution information. A client can determine a current distribution sequence and distribution time range of an order by means of currently provided order distribution information, so as to reasonably arrange receiving time, which not only increases a distribution success rate of a distributor but also improves purchasing experience of the client to a certain extent. The method for providing order distribution information provided by the present invention comprises: receiving a loading start instruction, and then recording a loading sequence of an order; receiving a load end instruction, and then determining a distribution sequence of the order according to the loading sequence of the order; according to a preset distribution time of a first order in a vehicle, a preset distribution time of a last order in the vehicle and a quantity of orders, calculating an average distribution duration of all the orders in the vehicle, and then determining distribution time of each order in the vehicle according to the average distribution duration; and providing a distribution sequence of the order and a distribution time range of the distribution time of the order for a client corresponding to each order.

The invention discloses a multi-mode switching type Internet of Vehicles routing method. The method comprises the following steps that: an RSU node performs switching judgment according to the sendingcondition of a data packet of the RSU node and the use condition of a cache stack, and performs switching among a V2I2V greedy forwarding mode, a prediction+copy transmission mode and a load balancing mode. According to the invention, the RSU wired network is utilized to assist in delivering the inter-vehicle multi-hop message. The load balancing according to the residual survival time of the data packet in combination with the estimated waiting time in the RSU message waiting queue, the data packets originally gathered in the heavy-load RSUs are shared to each light-load RSU, so that the network pressure of the heavy-load RSUs is reduced. The overtime packet loss caused by long-time waiting of the data packets in a message waiting queue of the heavy-load RSUs is avoided. Meanwhile, threeworking modes are designed for the RSU, so that the routing protocol can adapt to working environments with low vehicle node density and high vehicle node density. The end-to-end time delay of Internet of Vehicles routing is reduced, and the delivery rate is improved.

The invention provides a routing method for an internet of vehicles based on a user activity area model. The routing method for the internet of vehicles based on the user activity area model is provided to overcome the problem in the current internet of vehicles that user motion has community character, thus a message packet is difficult to transmit to a destination mode to result in a low delivery rate. The method comprises the following steps: (1) exploring the most possible activity area of a user according to the community character of node activity in a social network (SNs:Social Networks); (2) forwarding a message packet to the most possible occurrence area of the destination node by adopting the principle of proximity; and (3) waiting for the meeting the destination node and a hotspot carrying the message packet to deliver the message packet. The purpose is to change the traditional mode that the message packet is forwarded to a signal node into a mode that the message packet is forwarded to the user activity area, so as to greatly improve the delivery rate of the message packet.

The invention discloses a method for transmitting a multimedia message. The method comprises the following steps that: a short message service center (SMSC) transmits a notification short message to a mobile terminal and a delivery status message to a multimedia messaging service center (MMSC); and when the MMSC determines that the notification short message is successfully delivered according to a delivery status code in the delivery status message, the MMSC finds a multimedia message according to a message identifier of the notification short message in the delivery status message and transmits the multimedia message to the SMSC. The invention also provides a system for transmitting the multimedia message. According to the technical scheme of the invention, the transmission accuracy and the success rate of the multimedia message are improved.

The invention discloses a congestion control method based on socially aware in a delay tolerant network in order to solve the problem of congestion caused by discontinuous connection, long-time delay and node cache limit of the social delay tolerant network. A social congestion metric is constructed by considering the social relation characteristic and congestion level of each node; in a transmitting process, a message is transmitted to the node with relatively high social congestion metric; when congestion is caused, the message corresponding to the least value according to the social relation value between the target node corresponding to the message and the current message-carrying node is selected and discarded, and the influence on the routing efficiency caused by blind packet loss is reduced. A simulation result shows that compared with the current algorithm, an SACC (socially aware congestion control) algorithm has the advantages that within a tolerant time-delay range, the success rate of transmission can be effectively improved, the packet loss rate is reduced, and spending is reduced.

The invention discloses an access control system, method and device, an intelligent loudspeaker box and electronic equipment. A visited user dials a room number through the access control device; theaccess control device sends an access control calling request for the target room to the server; the server determines an intelligent sound box corresponding to the target room according to the corresponding relationship set between the room identifier and the sound box identifier, and forwards the visiting user information acquired by the access control device to the sound box, and the sound boxperforms identity verification on the visiting user according to the user information and the target identity information; and if the identity verification is passed, access control opening instruction information is sent to the server, and the server controls the access control device to unlock the access control according to the instruction information. By adopting the processing mode, the identity of a visitor can be verified through the sound box under the condition that nobody is at home, and the access control is unlocked through the sound box after the verification is passed; therefore,the access control unlocking convenience can be effectively improved, and the user experience is improved.

The invention discloses a method, system and apparatus for putting an open-screen advertisement of an application program and a medium. The method comprises the following steps: detecting a network downloading speed between the application program and an advertisement server after the application program is started; selecting an open-screen advertisement display mode of the application program according to the network downloading speed; when the network downloading speed is higher than a preset upper limit threshold value, downloading an on-screen advertisement from an advertisement server andcompletely displaying the on-screen advertisement; and when the network downloading speed is lower than the preset lower limit threshold value, skipping the open-screen advertisement and not displaying, and finally entering a main interface of the application program in at least one limited display mode that the network downloading speed is in an interval of the preset upper limit threshold valueand the preset lower limit threshold value. The open-screen advertisement display mode of the application program is selected according to the network downloading speed, the user experience can be guaranteed, meanwhile, the success rate of open-screen advertisement putting is improved to the maximum extent, and therefore the purpose of inventory improvement is achieved, and the problems that theopen-screen advertisement inventory is small, and the experience is poor are solved.

The invention discloses a distribution system for an express distribution center, comprising an express sending device, a controller, a dialing module, a data storage module, a positioning module and a receiving module. The express sending device is in communication connection with the controller. The controller is electrically connected with the data storage module. The controller acquires express waybill information from the express sending device and stores the express waybill information in the data storage module. The positioning module is in communication connection with the controller. The controller is electrically connected with the dialing module. The controller extracts all the waybill information of a distribution vehicle from the data storage module and the positioning result of the positioning module on the distribution vehicle, calculates the distance between the distribution vehicle and the recipient address in each piece of waybill information, and sorts expresses. The controller makes the dialing module call the numbers of recipients in sequence according to the order, determines whether it is convenient for each recipient to pick up the express, and sends the determining result to the receiving module. With the system, the distribution success rate of distribution personnel can be improved, the labor intensity distribution personnel can be reduced, and the efficiency of distribution can be improved.

The invention discloses a precise conveying device for slender workpieces and a conveying method thereof, and belongs to the technical field of automatic feeding devices. The precise conveying devicecomprises a hopper, a feeding wheel and a receiving device, wherein the hopper is obliquely arranged downwards, the feeding wheel is arranged at the lower end port of the hopper, and the lower end port of the hopper is tightly attached to an outer arc surface of the feeding wheel; multiple clamping grooves are formed in the feeding wheel, and the receiving device is arranged below or on one side of the feeding wheel; the precise conveying device further comprises a fixing clamping device, wherein the fixing clamping device comprises clamping rings and a support, the clamping rings are buckledon the outer arc surface of the feeding wheel, and gaps are reserved between the clamping rings and the outer arc surface of the feeding wheel; and the fixing clamp device further comprises adjustingscrews, nuts and springs, and the gaps between the clamping rings and the outer arc surface of the feeding wheel can be adjusted through rotating the nuts. By means of the device and the method, the slender workpieces of cylinders or approximate cylinders can be accurately conveyed one by one or quantitatively, so that the production efficiency is improved, labor force is saved, and cost is reduced; and meanwhile, structure is simple and practical, cost of the device is low.

The invention relates to a multi-channel conveying device for elastic fixing clamps. The multi-channel conveying device comprises a posture adjustment mechanism, conveying channels, clamping supplying mechanisms, buffering mechanisms and clamp conveying mechanisms, wherein the posture adjustment mechanism is used for adjusting the posture of elastic fixing clamps and continuously discharge the elastic fixing clamps; the posture adjustment mechanism is connected with the conveying channels; the clamping supplying mechanisms are used for supplying the elastic fixing clamps to the buffering mechanisms quantitatively; the buffering mechanisms are arranged on the tail ends of the conveying channels; the clamp conveying mechanisms are used for clamping and outputting the elastic fixing clamps and are located below the buffering mechanisms; each conveying channel comprises a shell and a positioning guiderail which is used for limiting the posture of the elastic fixing clamps; and each positioning guiderail is arranged in the corresponding shell. By adopting the multi-channel conveying device, the elastic fixing clamps can be rapidly and stably conveyed, and the multi-channel conveying device belongs to the technical field of gardening vegetable grafting devices.

The invention discloses a method and a device for issuing messages. The method for issuing the messages comprises a step of receiving messages which carry error codes and issuing status reports, a step of recognizing types of the error codes which are carried in the status reports issued by the messages, a step of setting corresponding sending shield period of the types for a target user number which is aimed by the status reports issued by the messages. When the target user number is in a sending shield period, messages are not issued to the target user number. By means of the application of the method and the device for issuing the messages, message issuing success rate can be improved, and therefore, load of network cell equipment related to short/ multimedia messages is reduced, and bandwidth resource is saved.

The invention provides an MPR set selection method based on isolation degree and non-MPR nodes, and belongs to the field of wireless Mesh network protocols. The method aims at an MPR selection algorithm in a standard OLSR protocol. The global optimal MPR set problem cannot be solved; meanwhile, a large number of TC packets are generated in an environment where a large number of nodes are accessed;therefore, network congestion and load imbalance are caused. Based on an OLSR protocol, the storage data of the neighbor nodes are expanded to three-hop neighbor nodes, a selection algorithm based onan isolation degree and a non-MPR node is provided, the optimal MPR node is determined by comparing the independence value or the non-MPR node value of the node, the condition of randomly selecting the MPR node is avoided, the underlying protocol code is improved and optimized for passing, and the generation of TC messages in the whole network is not reduced, so that the total throughput and thepacket delivery rate of the network are improved.