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41 results about "Wireless mobile ad hoc networks" patented technology
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Mobile Ad Hoc Networks (MANETs) are an emerging type of wireless networking, in which mobile nodes associate on an extemporaneous or ad hoc basis. MANETs are both self-forming and self-healing, enabling peer-level communications between mobile nodes without reliance on centralized resources or fixed infrastructure.
System and method for communication in a wireless mobile ad-hoc network
ActiveUS20070038743A1Reduce buildMinimal protocol overheadNetwork traffic/resource managementNetwork topologiesTransceiverWireless transceiver
A system and method for improving digital communication in a wireless mobile ad-hoc network. More specifically, the system includes one or more portable network devices operable to support the seamless operation of a self-initializing, self-healing, adaptive portable network. The portable network devices implement protocols that provide bandwidth management capabilities for use with radios, routers and other wireless network devices. Each portable network device includes at least one wireless transceiver, a processor and control software. The processor and control software are logically coupled to the wireless transceiver to facilitate digital communication via a plurality of communication channels with other network devices.
Owner:RAJANT CORP
Efficient lightweight information dissemination algorithm for mobile wireless Ad Hoc networks
ActiveUS20050152318A1Particular environment based servicesNetwork topologiesInformation DisseminationSelf-organizing network
A system and method for information dissemination in a wireless mobile ad hoc network. A method describes receiving a request to communicate a message from a source node to a destination, identifying each neighbor node of an ad hoc network, invoking a proactive border node broadcast protocol at the source node when the destination is a neighbor node and wherein the number of hops to the destination is less than a predetermined number of hops, invoking an on-demand border node broadcast protocol at the source node when the number of hops from the source node to the destination exceeds the predetermined number, and communicating the message from the source node based on the invoked broadcast protocol. A computer readable medium containing a computer program for information dissemination in a wireless mobile ad hoc network is also provided. Finally, a system for information dissemination in a wireless mobile ad hoc network is described.
Owner:GM GLOBAL TECH OPERATIONS LLC
Architecture for information dissemination in wireless mobile ad hoc networks
In future large-scale Emergency Response / Management (ER / EM) to terrorism and natural disasters, sharing the so-called common operational picture amongst dynamic task groups provides immediate advantages. In an ER / EM scenario, dissemination of the right data to the right person at the right time has a direct benefit. Timely and bandwidth efficient dissemination of sensor and Command and Control data remains a challenge. For example, dynamically changing mobile teams, information-needs profiling, information routing based upon information needs (not on IP address) are all complex issues. Accordingly, a protocol, called dissemination mesh, for constructing and reconfiguring network paths for disseminating information from sources to sinks, a software architecture for multi-domain wireless network information dissemination in the context of emergency response (resting above existing MANET protocols), supports needs-based dissemination, node mobility, rapidly changing groups (information sinks) and sensor networks (sources) is provided. The protocol includes: exploitation of Semantic Web and collaborative agent technologies, novel subscription-based information dissemination, intelligent networked information intermediaries, smart dissemination mesh forming and management. Together these technologies provide information dissemination management in the wireless setting. Application realms other than ER / EM can also be supported.
Owner:TELCORDIA TECHNOLOGIES INC
Power saving system in distributed wireless personal area network and method thereof
InactiveUS20050288069A1Reduce power consumptionPower managementEnergy efficient ICTMedia access controlPersonal area network
Owner:SAMSUNG ELECTRONICS CO LTD
INTEGRATING LOCAL CONGESTION AND PATH INTERFERENCE INTO QoS ROUTING FOR WIRELESS MOBILE AD HOC NETWORKS
A method and apparatus is provided for using a distributed multi-path QoS-aware routing scheme that considers basic MANET characteristics to meet transport service requirements of real-time applications and makes use of multiple discovered paths to calculate a next-hop decision. The QoS Routing scheme superimposes distributed neighborhood congestion, neighborhood density, and link stability and delay information over the multiple discovered paths when the next-hop decision is calculated.
Owner:BAE SYST INFORMATION & ELECTRONICS SYST INTERGRATION INC
Routing device and method of wireless mobile self-organizing network of dynamic assurance service quality
InactiveCN101119308ALarge benefit functionTransmission guaranteeData switching networksQuality of serviceTransmission quality
The present invention discloses a movable wireless route method of self organized network which can ensure the service quality. The present invention aims at the wireless movable QoS route agreement of the self organized network, which induces the applying Qos agree system into the strategic decision as the network bandwidth resource is limited with an unsteady link. The present invention comprises the following steps: (1) expressing the different QoS requirement of the customer such as each QoS index and arrange, the priority of the flow, the network resource require and the lose profit value of the customer to the expressed form which can be handled by the computer; (2) acquiring service quality parameter of the network resource and link through the QoS resource mould; (3) carrying out the agree system according to the QoS require and the valid resource of the network;(4) calculating and finding a special applying QoS route according to the QoS index of the QoS agree system; (5) transmitting an applying flow transmission reflect sheet of controlling mould to control the sending of the applying flow. The present invention can find the route according to the movable index, can maintain and agree the voice video and other applying flow QoS. The present invention can get a large customer profit; and the present invention can ensure the soft transmission quality of the applying flow of the network.
Owner:BEIHANG UNIV
Time synchronization for distributed mobile ad hoc networks
InactiveUS20100238890A1Reduce processing latencyLarge capacitySynchronisation arrangementNetwork topologiesRouting tableCross layer
Time synchronization among nodes in a wireless mobile ad hoc network (MANET) is obtained using a cross layer approach. Each node maintains a routing table that contains entries corresponding to other nodes of the network that are one or more hops away from the node, and topology messages are exchanged periodically among the nodes in order to update their routing tables. A network master node is selected, and remaining nodes that are one or more hops away from the master node are defined as slave nodes. The master node includes master timing information the topology messages that it transmits. The timing information is concatenated to include a first time (T1) at which a topology message was received by the master from each of the slave nodes, and a second time (td) at which the master node transmits a topology message after receiving all the topology messages from the slave nodes.
Owner:BAE SYST INFORMATION & ELECTRONICS SYST INTERGRATION INC
Channel time slot scheduling and allocating method of wireless mobile ad hoc network
The invention discloses a channel time slot scheduling and allocating method of a wireless mobile ad hoc network. The method comprises four stages of time slot application, conflict mediation, allocation announcement and time slot occupation, in view of the scheduling and allocating of data time slots in the (n+2)th time element, a node needs to start the time slot application in the (n)th time element, perform the conflict mediation at the end of the (n)th time element, and perform the allocation notification according to a mediation result in the (n+1)th time element, and obtain the occupation right of the corresponding time slot at the (n+2)th time element. The channel time slot scheduling and allocating method disclosed by the invention is used for solving the following problem: the node in a multi-hop network makes fast adjustment on the time slot allocation according to the requirements of the own service transmission and eliminates the conflict of the competition in the processof the time-slot allocation, the channel time slot scheduling and allocating method is applied to rapid movement of the node, the dynamic change of the network topology, distributed non-central control and other Ad hoc network scenes, and fair and efficient channel resource utilization technology is provided for network nodes to implement TDMA channel access control.
Owner:NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
Integrating local congestion and path interference into QoS routing for wireless mobile AD HOC networks
A method and apparatus is provided for using a distributed multi-path QoS-aware routing scheme that considers basic MANET characteristics to meet transport service requirements of real-time applications and makes use of multiple discovered paths to calculate a next-hop decision. The QoS Routing scheme superimposes distributed neighborhood congestion, neighborhood density, and link stability and delay information over the multiple discovered paths when the next-hop decision is calculated.
Owner:BAE SYST INFORMATION & ELECTRONICS SYST INTERGRATION INC
Power saving system in distributed wireless personal area network and method thereof
InactiveUS7715885B2Reduce power consumptionSave powerEnergy efficient ICTPower managementMedia access controlPersonal area network
A power saving system in distributed wireless personal area network and a method thereof are disclosed. A PS (Power Save) anchor that provides information about hibernating devices to a beacon group through power save information elements in media access control for a wireless personal area network based on a wireless mobile ad-hoc network. Accordingly, all devices in the given wireless personal area network can schedule their active modes and hibernating modes according to hibernating intervals of destination devices with which the devices want to communicate. This can effectively reduce the necessity of the devices' waiting for the destination devices to awake from the hibernating mode as the devices maintain their idle state, and thus the power consumption of all the devices in the network can effectively be reduced.
Owner:SAMSUNG ELECTRONICS CO LTD
Method for measuring communications volume area distribution in wireless mobile self-organizing network
InactiveCN101111042ANetwork topologiesRadio/inductive link selection arrangementsJet aeroplaneData acquisition
The present invention relates to a communication volume regional distribution method in the wireless mobile self organizing network measurement. The procedure is: an aerial vehicle is used to collect data in the air above the target area; the flight track and the investigating area are positioned through the GPS and the wireless network card on the aerial vehicle, the signal intensity of the communication node is measured, and the distance between the communication node and the investigating position is calculated through a signal intensity formula; the central position of the measured communication node is positioned by utilizing position information of the nodes on the two unparallel edges in the communication scope of a communication node and the distance information; the communication volume of various communication node is identified through the communication volume of the communication node on the flight track acquired by the wireless equipment according to the MAC address. The present invention can be applied in the investigation to the military conduction center of the hostile party by a pilotless airplane in the military battlefield environment, and the existence of the hostile party military conduction center is judged through the intensity degree of the communication volume; the present invention can be also used to detect the communication conflict scope of the mobile node, and used for the adjustment, assessment and test of the routing protocol in the wireless mobile self organizing network.
Owner:BEIHANG UNIV
Efficient lightweight information dissemination algorithm for mobile wireless ad hoc networks
ActiveUS7420954B2Frequency-division multiplex detailsParticular environment based servicesInformation DisseminationSelf-organizing network
Owner:GM GLOBAL TECH OPERATIONS LLC
Time synchronization for distributed mobile ad hoc networks
Time synchronization among nodes in a wireless mobile ad hoc network (MANET) is obtained using a cross layer approach. Each node maintains a routing table that contains entries corresponding to other nodes of the network that are one or more hops away from the node, and topology messages are exchanged periodically among the nodes in order to update their routing tables. A network master node is selected, and remaining nodes that are one or more hops away from the master node are defined as slave nodes. The master node includes master timing information in the topology messages it transmits. The timing information is concatenated to include a first time (T1) at which a topology message was received by the master from each of the slave nodes, and a second time (td) at which the master node transmits a topology message after receiving all the topology messages from the slave nodes.
Owner:BAE SYST INFORMATION & ELECTRONICS SYST INTERGRATION INC
System and method for communication in a wireless mobile ad-hoc network
InactiveUS20110078461A1Rapid and robust adaptationMinimization requirementsNetwork traffic/resource managementNetwork topologiesSelf-healingTransceiver
Owner:RAJANT CORP
Radio mobile self-organizing network route control system based on quantum searching idea
InactiveCN101534538AReduce overheadFast convergenceHigh level techniquesWireless communicationShortest distanceHigh energy
The invention discloses a radio mobile self-organizing network route control system based on the quantum searching idea, comprising a node condition vector function model building module for setting the route selection index being network distance between nodes, node residual energy and end-to-end time delay and building the node condition vector function model, a route selecting module for sending a wave function from the source node to the node in the jump range and judging whether the received wave function is the target node, if yes, returning the confirm information to notify the route building, or else, performing the correlation operation for the local node condition vector function weight and the received wave function and calculating the probability of the link to be selected, selecting the high- probability node as the relay node, taking the operated vector function as new wave function for forwarding; selecting the short-distance, high-energy and short-delay link as the route link. The invention has fast converge, strong real-time and less network spending.
Owner:ZHEJIANG UNIV OF TECH
Multiuser detection enabled medium access control in mobile ad hoc networks
ActiveUS20120250629A1Synchronisation arrangementNetwork traffic/resource managementMultiuser detectionNetwork management
A method of providing medium access control for a wireless mobile ad hoc network includes defining a TDMA network timing frame including a data (DATA) zone having one or more time slots structured to support multiuser detection (MUD) of concurrent transmissions during each slot, a negative acknowledgment (NACK) zone during which nodes transmit requests for retransmission of packets destined to but not successfully received by the nodes, a broadcast (BC) zone during which network management messages are broadcast to the nodes, and a control (CTRL) zone. A primary master (PM) node is selected and operates as a source of network time for all the nodes. Each node synchronizes its time to that of the PM node during the CTRL zone in a distributed manner, by exchanging control messages with the PM node or other nodes located one or more hops from the PM node.
Owner:COLLISION COMM
Timeslot interchange operating method for time division multiple address access system in wireless mobile self-organized network
InactiveCN102386991AIncrease profitImprove real-time performanceNetwork topologiesTime-division multiplexComputer networkTime division multiple access
The invention belongs to the wireless mobile self-organized network technical field, and specifically relates to a timeslot interchange method for achieving a time division multiple address access system in the wireless mobile self-organized network. The timeslot interchange operating method comprises the following steps: sending application timeslot information to the timeslot application node to apply required quantities of mini-slots; evaluating the network load by other nodes in the network and sending release timeslot information by the node satisfying the requirements; selecting the optimal timeslot by the timeslot application node, sending the timeslot acceptation information for confirming, releasing the node release mini-slots by the timeslot release node, and using the mini-slots by the timeslot application node. The free timeslot resource in the network is reasonably distributed by the method; the utilization rate of the network resource is improved; the real time of sending high priority message is enhanced; and the invulnerability of the system is improved.
Owner:HARBIN ENG UNIV
Routing method and device for wireless ad hoc network
ActiveCN106888490AHigh precisionReduce overheadNetwork topologiesWireless ad hoc networkComputer terminal
The invention discloses a routing method and device for a wireless ad hoc network, and relates to the field of LTE and wireless mobile ad hoc networks. The method includes the following steps: a current node obtains topological information of a wireless ad hoc network fisheye domain where the current node is through interaction of node information with other nodes; according to the obtained topological information of the fisheye domain, nodes in the fisheye domain are elected as base station mode nodes or terminal mode nodes; according to the current node and the type of a one-hop neighbor node of the current node, generating a link state table; and according to the link state table, generating a routing list with the current node being a root node. Through the routing method and device provided by the invention, realizes application of an existing LTE technology to the wireless ad hoc network, and better adapts to rapid change of network topology, thereby improving routing precision, and saving routing overhead.
Owner:ZTE CORP
Power aware scheduling and power control techniques for multiuser detection enabled wireless mobile ad-hoc networks
ActiveUS20120250595A1High modulationLow transfer rateEnergy efficient ICTPower managementMultiuser detectionSignal-to-noise ratio (imaging)
What is provided is a system for maintaining acceptable error rates in a MUD-enabled ad-hoc network. In this system the power spread associated with all of the nodes is maintained within the dynamic range of the system, for instance 30 dB. Also, the signal-to-noise ratio at an intended receiver is maintained above a predetermined minimum SNR, for instance above 5 dB. If the dynamic range rule is not met, then the power at the transmitting node is attenuated such that the dynamic range rule is met, checking to see that the minimum SNR rule is also met, or the transmission from this node is pulled. If there is no power control solution, then power aware scheduling is applied. Alternatively, only power aware scheduling is utilized.
Owner:COLLISION COMM INC
Channel resource allocation method for multi-transceiver multi-channel wireless Ad Hoc network
ActiveCN111818652AImprove utilization efficiencyApplicable networking scenario requirementsNetwork topologiesTransceiverResource assignment
The invention relates to the field of wireless mobile ad hoc networks. The invention discloses a channel resource allocation method for a multi-transceiver multi-channel wireless Ad Hoc network. TDMA-based distributed channel resources are dynamically allocated and scheduled, a node-oriented and link-oriented combined hybrid allocation mechanism is adopted for the channel resources, node-orientedresource allocation and transmission are used for broadcasting applications, and link-oriented resource allocation and transmission are used for supporting point-to-point unicast service flows with large data volume; nodes in the wireless Ad Hoc network are not limited to have the same transceiver configuration so as to support heterogeneous node networking, the number of the node transceivers andthe number of working channels are elastically variable, and the number of the node transceivers and the number of the working channels can be reduced to single transceiver and single channel conditions. According to the invention, a node-oriented and link-oriented combined hybrid allocation mechanism is adopted for channel resources, so that the resource utilization of broadcast and unicast datatransmission is more targeted, and the utilization efficiency of the channel resources is improved.
Owner:NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
Dynamic service recovery method in wireless mobile self-organization network
InactiveCN101742711AReduce overheadSolve technical problems with short life cyclesError prevention/detection by using return channelNetwork traffic/resource managementService provisionDynamic monitoring
The invention belongs to the technical field of self-organization networks, and relates to a dynamic service recovery method in a wireless mobile self-organization network. The dynamic service recovery method described in the invention is a method based on a dynamic monitoring center. On a predetermined combination service execution path, each service provision node automatically becomes a monitoring center of the next node on the combination service execution path; service executive condition can be rapidly learned with a smaller expenditure by the strategy of the dynamic monitoring center so as to determine whether the service needs to be executed again and be restarted from some service node.
Owner:FUDAN UNIV
Systems and methods for motion estimation for coding a video sequence
ActiveUS20170257641A1Eliminates manual selectionEffective estimateDigital video signal modificationPattern recognitionVideo encoding
Systems and methods for motion estimation for video encoding are described. The method observes the motion from the previous frames of the video uses the same for predicting search pattern and classifying the motion for the current frame. The motion in the video is predicted by calculating the Temporal Redundancy Achieved for previous frames and the Block Movement Factor in the previous frame. The method also considers the available bandwidth for choosing the search pattern especially, in the case of video streaming in wireless mobile ad hoc networks.
Owner:UURMI SYST PVT
Service selection method based on node life cycle in wireless mobile self-organization network
InactiveCN101742602AExtend the life cycleImprove performanceNetwork topologiesService provisionService selection
The invention belongs to the technical field of self-organization networks, and relates to a service selection method in a wireless mobile self-organization network. The method comprehensively considers three factors of service number of nodes in the network, energy consumed by a relay node transmission service request packet and energy consumed by a service execution node to execute service through Cost function; the most suitable service provision node is selected to execute service request to ensure the maximization of network life cycle, thus solving the technical problem of shorter network life cycle in a selection method based on hop count, and changing limitation problem of the improved service selection method based on the hop count.
Owner:FUDAN UNIV
A high-dynamic mobile self-organizing network topology change sensing method
ActiveCN109743790AAccurate descriptionImprove performanceNetwork topologiesData switching networksSelf-organizing networkNetwork topology
The invention discloses a topology change sensing method for a wireless mobile ad hoc network. The method comprises the following steps: acquiring all one-hop neighbor nodes from neighbor nodes of a node i according to an effective transmission range of the node, Wherein the node i is any node in the network; Recording and updating information of all one-hop neighbor nodes in the neighbor node information list of the node i; Based on the neighbor node information list, sequentially calculating the topology change degree between the nodes, the topology change degree between the node i and all neighbors, the whole network instantaneous topology change degree and the whole network average topology change degree; In this way, the topological change condition between the nodes of the network isobtained. The method provided by the invention is suitable for complex task scenes and mobile scenes in a high-dynamic mobile ad hoc network, and the nodes can rapidly sense surrounding topology change conditions in the complex scenes; And realizing network local topology change perception and whole network topology change perception by the nodes.
Owner:NAT SPACE SCI CENT CAS
Distributed scheduler design for multiuser detection enabled wireless mobile ad-hoc networks
ActiveUS8792517B2Improve reuseNetwork topologiesWireless commuication servicesMultiuser detectionFrequency spectrum
In the method for operating an interference multiple access communications system, wherein the improvement comprises the steps of employing a distributed scheduler within a Media Access Controller (MAC) for Multiuser Detection (MUD) enabled Mobile Ad-hoc Networks (MANETS) to increase spectral efficiency by increasing spectral use and providing a way to dynamically allocate virtual channels to achieve maximum channel reuse in different network topologies and different link patterns and to ameliorate any hidden or exposed node problems.
Owner:COLLISION COMM INC
Multiuser detection enabled medium access control in mobile ad hoc networks
ActiveUS8885631B2Error prevention/detection by using return channelSynchronisation arrangementMultiuser detectionNetwork management
Owner:COLLISION COMM INC
Wireless mobile ad hoc network clustering cross-layer communication control method, system and application
The invention belongs to the technical field of wireless communication, and discloses a wireless mobile ad hoc network clustering cross-layer communication control method, system and application, andthe method comprises the steps: comparing the maximum throughput when a node uses different communication radiuses, and obtaining the optimal communication radius of the node under the density; periodically dividing the time into a plurality of time slices, and dividing each time slice into a neighbor discovery time period and a data transmission time period; after each node detects the density ofnodes around the node, determining a proper communication radius, and in the data transmission stage, a routing mechanism of a clustering cross-layer protocol HCVCR with the changeable communicationradius being a routing discovery and establishment mechanism based on passive routing AODV. According to the invention, a relatively small communication radius is used in an area with dense nodes, sothat the space division multiplexing efficiency of the area is improved, and the nodes can access a channel more quickly; the sparse area of the nodes enables the communication radius to be large, isolated nodes are avoided, and the overall throughput of the network is improved.
Owner:XIDIAN UNIV
Method for measuring communications volume area distribution in wireless mobile self-organizing network
InactiveCN100584073CNetwork topologiesRadio/inductive link selection arrangementsJet aeroplaneData acquisition
Owner:BEIHANG UNIV
Routing device and method of wireless mobile self-organizing network of dynamic assurance service quality
InactiveCN101119308BTransmission guaranteeImplement routingData switching networksQos quality of serviceEngineering
The present invention discloses a movable wireless route method of self organized network which can ensure the service quality. The present invention aims at the wireless movable QoS route agreement of the self organized network, which induces the applying Qos agree system into the strategic decision as the network bandwidth resource is limited with an unsteady link. The present invention comprises the following steps: (1) expressing the different QoS requirement of the customer such as each QoS index and arrange, the priority of the flow, the network resource require and the lose profit value of the customer to the expressed form which can be handled by the computer; (2) acquiring service quality parameter of the network resource and link through the QoS resource mould; (3) carrying out the agree system according to the QoS require and the valid resource of the network;(4) calculating and finding a special applying QoS route according to the QoS index of the QoS agree system; (5) transmitting an applying flow transmission reflect sheet of controlling mould to control the sending of the applying flow. The present invention can find the route according to the movable index, can maintain and agree the voice video and other applying flow QoS. The present invention can get a large customer profit; and the present invention can ensure the soft transmission quality of the applying flow of the network.
Owner:BEIHANG UNIV
Wireless mobile ad hoc network clustering cross-layer communication control method, system and application
The invention belongs to the technical field of wireless communication, discloses a wireless mobile self-organizing network clustering cross-layer communication control method, system and application, compares the maximum throughput of nodes using different communication radii, and obtains the optimal density of nodes under this density Communication radius; divide time periodically into time slices, in each time slice, divide into neighbor discovery period and data transmission period; after each node detects the node density around itself, determine the appropriate communication radius, In the data transmission stage, the routing mechanism of the clustering cross-layer protocol HCVCR with variable communication radius is based on the routing discovery and establishment mechanism of passive routing AODV. The present invention improves the space division multiplexing efficiency of the area by using a relatively small communication radius in the area where the nodes are dense, and the nodes can access the channel faster; the area where the nodes are sparse enables a larger communication radius, avoiding The emergence of isolated nodes improves the overall throughput of the network.
Owner:XIDIAN UNIV
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