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42results about How to "Shorten distribution time" patented technology

Data dissemination method in wireless sensor network

The invention provides a data dissemination method in a wireless sensor network, and is particularly suitable for scenes for performing program wireless updating on a sensor network node. The method comprises the following steps of: dividing high-capacity dissemination data into data blocks of fixed sizes, and dividing the data blocks into a preset number of data packets with fixed lengths, wherein each data packet corresponds to a unique sequence number; and receiving the data packets received by a node according to a bit vector mark, and requesting to retransmit the lost packets, wherein nodes at different distances away from a data source in a network can synchronously transmit the data blocks with different numbers to form pipeline transmission and regularly send and receive the data by a time division multiple access (TDMA) method according to a time slot; when a conflict is detected, a time slot table is dynamically adjusted and exchanged, so that subsequent conflicts can be reduced, and redundant data receiving is also reduced; and a plurality of sending nodes can send the data packets according to different starting sequence numbers, so that the data dissemination time can be shortened, and energy consumption in a data dissemination process can be reduced.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

Intelligent equipment network access method and configuration system

The invention discloses an intelligent equipment network access method and a configuration system. The method comprises the steps of monitoring data packets of all channels in the air by intelligent equipment in a monitoring mode; when receiving a synchronous data packet transmitted by a mobile terminal from a first channel, analyzing the received synchronous data packet, and acquiring channel information carried in the received synchronous data packet; judging whether a second cannel in the channel information is the same as the first channel by the intelligent equipment, and if not, switching a current monitoring channel to the second channel from the first channel; and fixing the intelligent equipment on the second channel to monitor a networking data packet transmitted by the mobile terminal, and enabling the intelligent equipment to be accessed to a wireless network according to the networking data packet. According to the intelligent equipment network access method and the configuration system provided by the invention, the channels are carried in the synchronous data packet, so that the channels can be correctly locked by WiFi of the intelligent equipment, the efficiency of receiving the data packets sent by the mobile terminal by a WiFi module is improved, the success rate of actual test configuration is obviously improved, and the network distribution time of the WiFi module is reduced.
Owner:广州TCL智能家居科技有限公司

Intelligent household electrical appliance and network distribution method and device thereof

The invention provides an intelligent household electrical appliance and a network distribution method and device thereof. The network distribution method of the intelligent household electrical appliance comprises the steps of obtaining an air data packet; determining a network distribution protocol corresponding to the network distribution information from at least one pre-stored network distribution protocol based on the network distribution information carried by the air data packet; obtaining network distribution data based on the determined network distribution protocol; determining whether the network distribution data are complete; and when the network distribution data are complete, building communication connection with an external mobile terminal which sends the network distribution data based on the network distribution data. According to the scheme, the network distribution time of the intelligent household electrical appliance can be shortened, network distribution protocols of multiple e-commerce platforms can be supported at the same time, and accordingly, the development period at the network distribution stage is shortened efficiently when the intelligent household electrical appliance is connected with each e-commerce platform.
Owner:合肥美菱物联科技有限公司

Network distribution method, device and system

The invention provides a network distribution method, device and system. The method is applied to any device in a wireless mesh network, and includes the following steps: receiving communication information sent by other devices in the mesh network, wherein the communication information includes a network address and a unique identity of each device; determining whether the own network address isthe same as the network addresses of other devices that are received; if yes, calculating the unique identities of the devices with the same network address according to a preset rule, and obtaining an ID value of each device; and comparing the own ID value with the ID values of other devices that are obtained by using a comparison strategy, and determining whether to modify the own network address according to a comparison result. Autonomous communication is realized through mutual interaction between the devices in the mesh network, the synchronization of the network addresses can be achieved, the network distribution time can be shortened, and the network distribution efficiency can be improved. If the device is abnormal, the uniqueness of the device address can also be ensured throughthe transient network synchronization, and thus the compatibility of the devices in the mesh network can be improved.
Owner:SUZHOU OPPLE LIGHTING +1

Intelligent household electrical appliance network configuration control method and control device, and application

The invention provides an intelligent household electrical appliance network configuration control method and control device and an application, the intelligent household electrical appliance network configuration method comprises the following steps: obtaining a plurality of Bluetooth network configuration broadcast messages, each Bluetooth network configuration broadcast message corresponding to one intelligent household electrical appliance; selecting at least one intelligent household electrical appliance from the plurality of intelligent household electrical appliances as equipment to be subjected to network configuration, and establishing a list of the equipment to be subjected to network configuration; establishing a Bluetooth connection with the equipment to be subjected to network configuration, and sending network configuration registration information to the equipment to be subjected to network configuration; and receiving and displaying a network configuration registration result of the equipment to be subjected to network configuration. According to the invention, one-time network configuration selection is carried out on the equipment to be subjected to network configuration, network configuration can be carried out on multiple pieces of equipment to be subjected to network configuration, and the network configuration experience when nnetwork configuration is carried out on multiple pieces of equipment is improved.
Owner:NINGBO AUX ELECTRIC +1

Cluster routing method under environment of vehicular Ad hoc network

InactiveCN101867992ARealize seamless transmissionAvoid frequent failuresRoad vehicles traffic controlNetwork topologiesRoad networksWeb environment
The invention discloses a cluster routing method under the environment of a vehicular Ad hoc network, which includes the following steps: step 1: with existing traffic infrastructures in an urban scene as cluster heads, a road network is divided into a plurality of clusters; step 2: a source node A acquires the distance DAB between the source node A and a destination node B; step 3: the source node A acquires a cluster head X of the cluster of the source node A; step 4: the cluster head X acquires the position coordinates of the destination node B and a cluster head Y of the cluster of the destination node B; step 5: the cluster head X of the cluster of the source node A sends data packets to the cluster head Y of the cluster of the destination node B via a backbone network; step 6: the cluster head Y of the cluster of the destination node B directly sends the data packets to the destination node B in the cluster thereof. The invention utilizes the existing traffic infrastructures to divide the network into clusters, and by adopting different communication modes in the clusters and between the clusters, the distribution time of traffic information is effectively shortened, so that the traffic jams of urban roads can be effectively reduced.
Owner:BEIHANG UNIV

Distributed network topology exploration and route distribution system and method

The invention discloses a distributed network topology exploration and route distribution system and method. The system comprises a main sub-network management and a plurality of sub-network management agents; the main sub-network management is used for equally distributing all network nodes including a switch and a network card to different sub-network management agents in a dynamic mode; summarizing data collected by each sub-network management agent, and computing a routing table according to a routing algorithm; sending a switch routing table distribution command to the sub-network management agents at the same time; and the sub-network management agents are used for collecting topologies of respective monitoring objects and sending the information to the main sub-network management. According to the distributed network topology exploration and route distribution system provided by the invention, distributed topology exploration and route distribution are achieved through a distributed sub-network management mode, so that the network topology exploration and route distribution time is greatly shortened, the efficiency of dynamic exploration and route distribution of large-scaleinterconnection network management is improved and the availability of a network management system is improved.
Owner:JIANGNAN INST OF COMPUTING TECH

Data distribution method in wireless sensor network

The invention provides a data dissemination method in a wireless sensor network, and is particularly suitable for scenes for performing program wireless updating on a sensor network node. The method comprises the following steps of: dividing high-capacity dissemination data into data blocks of fixed sizes, and dividing the data blocks into a preset number of data packets with fixed lengths, wherein each data packet corresponds to a unique sequence number; and receiving the data packets received by a node according to a bit vector mark, and requesting to retransmit the lost packets, wherein nodes at different distances away from a data source in a network can synchronously transmit the data blocks with different numbers to form pipeline transmission and regularly send and receive the data by a time division multiple access (TDMA) method according to a time slot; when a conflict is detected, a time slot table is dynamically adjusted and exchanged, so that subsequent conflicts can be reduced, and redundant data receiving is also reduced; and a plurality of sending nodes can send the data packets according to different starting sequence numbers, so that the data dissemination time can be shortened, and energy consumption in a data dissemination process can be reduced.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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