289 results about "Communication problem" patented technology

A method and system monitor a communications network, e.g., a controller area network (CAN), and more specifically, an in-vehicle communications network, by maintaining a count of each type of error code and a histogram of all network messages seen by each of the controllers during a measurement period; and by determining a bus health index of the communication bus based upon a percentage of a given type of error to the total count of all errors during a measurement period. An individual controller or controller area network bus segment can be indicated as having a communications problem as a result of the health index.

A system and method of processing information regarding medical devices in wireless communication with each other is provided in which a handheld device has a first wireless communication link with a first medical device, such as a glucose sensor, and a second wireless communication link with a second medical device, such as an insulin pump. A processor in the handheld device monitors the status of the first and second wireless links and upon noting a change in status of either one, compares the first wireless link status with the second wireless link status and provides guidance for resolving a communication problem based on the comparison. The latency of the medical devices is considered as well as the ability to make system status changes, extend time periods before alarms are issued, and the characteristics of the medical devices are considered.

The invention discloses a device-to-device (D2D) communication method, device and system. A second device sends a dispatching request for D2D communication to a first device, and D2D communication data transmission is carried out based on the dispatching of the second device; the first device responds to the dispatching request and sends control information to dispatch the second device to carry out D2D communication data transmission; a third device detects the control information sent by the first device and receives the D2D communication data sent by the second device based on the control information. By means of the device-to-device communication method, device and system, the communication problem among the devices is solved, and compatibility of device-to-device communication and cellular communication are guaranteed; in addition, the device-to-device communication method, device and system can be suitable for device-to-device communication with a unicasting or broadcasting or multicasting mode or other broadcasting modes.

The invention is related with network communication, in particular wireless networking. In order to improve bandwidth utilization, a header compression protocol is implemented in most wireless network systems, such as robust header compression ROHC for WLAN systems. When using multicast groups for data communication problems with ROHC are related with relative late initiation of stations that newly enter the multicast group. The invention proposes an improved state machine for the compressor in order to overcome this drawback. It is also proposed an improvement for the decompressors which omit sending positive acknowledgements in order to further improve compression efficiency. The invention also concerns an accordingly improved method for the exchange of data packets in a network of distributed stations.

A credible U disc is featured as properly solving safety problem of credible U Disc and data communication problem between computer and U disc by utilizing self-destroyed program, certificate certifying program, Applet certification program and SCSI command operated on operation system of intelligent card to carry command of intelligent card.

A system consisting of interconnectible, hearing-assistive, portable “units” which can address communication problems that persons who are hard of hearing experience in many social settings (such as while dining out with friends in a noisy restaurant). The system allows each unit operator to share multiple audio input signals coming into any of the connected units with the other participants using the system. The operator is also able to selectively amplify one or more of the incoming audio signals (such as from the voices of one or more of the participants) while blocking out or turning down another (such as from background music). The units are capable of integrating audio signals with video, word processing and internet data. An innovative method for improving communication for persons who are hard of hearing in public and private settings is also claimed.

The invention provides a communication transferring method which is applied to a first electronic terminal, a mobile terminal and a server. The communication method includes accepting communication information from a second electronic terminal; detecting at least a third electronic terminal which is connected with the first electronic terminal through network; inquiring a first transferring condition which is memorized before, confirming at least a specific electronic terminal which satisfies the first transferring condition in at least the third electronic terminal; sending prompt information corresponding to the communication information to at least a specific electronic terminal and outputting the prompt information through at least the specific electronic terminal. The communication transferring method, the mobile terminal and the server have the advantage of solving influenced instant communication problems caused by some important communication messages missed when the mobile terminal is not at hand of the existing technology.

The invention provides an Internet of things multifunctional gateway based on NB-IoT, and aims at solving the communication problem of two or more wireless or wire sensing communication networks and the NB-IoT. The multifunctional gateway comprises an interface module, a conversion module, a master control module, a NB-IoT module, wherein the interface module provides a module interface with other wireless or wire sensing network; the conversion module realizes the level matching and conversion between the interface module and the master control module; the master control module provides the protocol adaption, the protocol conversion, and the data processing of each communication network through a microprocessor; the NB-IoT module accesses to a communication network to communicate with the server through an operator base station. The microprocessor is used as the core component to connect with other network module through a standard extensible interface, the information exchange between other networks is established in a bus way, and the communication with the server is performed through a mobile operator base station by the NB-IoT module.

The invention discloses a power distribution network maintenance operation management system based on an intelligent mobile phone. A windows mobile intelligent mobile phone is used as a communication client. A GPRS module brought by the intelligent mobile phone is used to carry out remote transmission of data, sound and an image so as to solve a communication problem that there are lots of distribution network distribution points and locations are badly organized. Simultaneously the intelligent mobile phone and a GPRS mobile communication network can be used to transmit field data, the sound the image to a WEB server in real time, which provides convenience for the WEB server to work cooperatively with field personnel. In addition, the intelligent mobile phone can be used to complete downloading, operation and submission of the power distribution network maintenance data so that the power distribution network maintenance personnel thoroughly gets rid of a working mode of application, filling in and paper document submission. Simultaneously, generation of a hand-written error in the paper document can be avoided. Manpower and time can be saved. Security and reliability of distribution network work can be increased. Working efficiency can be greatly increased.

The invention provides a method and system for real-time monitoring Trojan Horse base on network communication behavior characteristic of Trojan Horse in network data flow, which belongs to the field of computer network security. Currently, Trojan Horse is capable of avoiding detection based on file characteristic and host behavior characteristic in prior art by various technical means. But behavior characteristic of Trojan Horse in network communication is relatively stable, that is application communication protocol thereof is unlikely to change. That is because the change to the protocol relates to simultaneous change to programs on both Trojan Horse customer and server, which needs re-implantation of the Trojan Horse, and also relates to the communication problem between different versions of the Trojan Horse program. Accordingly, based on the network communication behavior characteristic during Trojan Horse activation in the network data flow, not only the known Trojan Horses can be monitored, but also unknown flowered, shelled or variant Trojan Horse can be precisely monitored.

The invention discloses an automatic application bug mining system and method under an Android platform, and belongs to the technical field of software analysis. The system is mainly divided into an application static analysis module and an application dynamic analysis module; the static analysis module mainly aims at carrying out analysis of control flow and dataflow on android package files (apk), extracting module permission and other property information, and carrying out reachable path analysis on communication problems among the modules in an application; during the dynamic analysis, a Fuzzing test case data is constructed on the basis of a static analysis result at first, Smali code instrumentation is conducted on decompiled Smali files, the application is enabled to run to obtain output information, and under the combination of the static analysis result, bugs existing in the application can be obtained finally. By adopting the automatic application bug mining system and methodunder the Android platform, the bugs possibly existing in the application can be automatically mined, the system and method have certain flexibility and solve the problem that a manual mining mode consumes a lot of time, and meanwhile, by combining the static analysis with the dynamic analysis, the accuracy can be greatly improved.

The present invention relates to methods and apparatuses for establishing a routing path in a multi-hop network. The methods comprises (a) transmitting a notification message associated with communication problem to neighboring nodes, (b) deriving approaching characteristics of a communication problem-causing element from the notification message, and (c) establishing a routing path based on the approaching characteristics of the communication problem-causing element. With the methods and apparatuses, it is possible to determine a path that is expected to experience a communication problem based on the approaching characteristics of a communication problem-causing element and to adaptively establish a reliable routing path.

A method and system includes the ability for individuals to set up an ad hoc digital and voice network easily and rapidly to allow users to coordinate their activities by eliminating the need for pre-entry of data into a web or identifying others by name, phone numbers or email. This method is especially useful for police, fire fighters, military, first responders or other emergency situations for coordinating different organizations at the scene of a disaster to elevate conventional communication problems either up and down the chain of command or cross communication between different emergency units. The method and system provides that the users are only required to enter a specific Server IP address and an ad hoc event name, a password and perhaps the name of the particular unit. The system therefore defines the method of accomplishing the ad hoc network by providing all responding personnel that need to communicate with PC's or PDA's which are interconnected to the IP Server using cellular or other communications.

The invention provides a low-voltage concentrated meter reading communication detection device comprising an analog circuit and a digital circuit. The analog circuit comprises power frequency isolation signal coupling, band-pass filtering, carrier signal power detection, a program-controlled local oscillator, AD sampling, a concentrator module, an analog meter module and a power control module. The digital circuit comprises system data memory, an embedded computer software and hardware system, buttons, a display module and a non-carrier communication port. The low-voltage concentrated meter reading communication detection device is an onsite portable tool which is light and convenient and easy to use so that measurement of communication functions, communication capacity and onsite power line electromagnetic environments can be effectively performed on various acquisition devices like a special transformer acquisition terminal, a concentrator, a collector and an electric energy meter, and a local communication problem of an acquisition terminal system can be solved onsite.

A PSAP management system includes a mobile device and a Short Message Service (SMS) enabled ESRP(s). The mobile device can include a PSAP administrator module that allows a PSAP administrator to initiate transmission of a text message to a Short Message Service (SMS) enabled ESRP(s). The text message can be comprised of management commands that allow the PSAP administrator to remotely manage, e.g., take a particular PSAP offline, place a particular PSAP online, redirect overflow to a particular PSAP, direct maintenance to a particular PSAP, direct disaster calls to a particular PSAP, etc., one or more PSAPs. The PSAPs can be managed due to such external factors as, e.g., communication problems with a particular PSAP, power outage at a particular PSAP, localized emergencies requiring greater bandwidth, etc.

The invention discloses a service system of ocean ultra-short wave wireless telecommunications and comprehensive information, which comprises an integrated service controlling and switching center, a base station with special frequency band on the ocean, and a shipborne mobile terminal with built-in GPS; the system adopts a mode of MPT-1327 signaling fast frequency-shift key modulation, a duplex mode or a half duplex mode; the base station uses a 2M digital circuit or a satellite to connect with the integrated service controlling and switching center, the latter is connected with an LBS location service platform, a management platform, a distress alerting platform, a value added service platform and PSTN or PLMN. The LBS location service platform is connected to monitoring centers at different levels through DDN or WAN. The service system of the invention solves the mobile communication problem of ships which locate within 300 nautical miles off the shore and realizes auto roaming and a plurality of communication services of users in an ocean network. Numbers of users on the ocean can be realized to be bundled with phone numbers, and real-time monitoring as well as centralized command and management of the ships on the ocean by the monitoring centers at different levels can be realized.

The invention discloses an intelligent home system based on cloud service and ZigBee technology and a design method thereof. The system adopts a browser / server (B / S) architecture, uses Apache as a Web server, uses Mysql as a database, stores a corresponding data record, converts the data into a Json format, then communicates with an Android mobile phone through HTTP and achieves related data transmission through a ZigBee protocol stack of the TI company, the ZigBee protocol stack transmits the received data to an Android home gateway through a serial port and transmits the data to the server through the HTTP, and a mobile phone client is connected with the server to synchronize all data and display home building conditions in real time. The intelligent home system disclosed by the invention mainly solves a ZigBee set-point control problem, a communication problem of a ZigBee coordinator and the home gateway and a remote control problem.

The present invention provides a dynamic real-time quality management of packetized communications in a network environment. Packetized communications are monitored by and exchanged between wireless Access Points (APs) and wireless terminals or by quality monitoring modules located within network segments or at network vertices. The processing unit analyzes the packetized communications to identify communication signatures associated with the packetized communications. The processor then uses these signatures to identify network impediments to the exchange of the packetized communications. These impediments may take the form of coding problems in which case an appropriate coding scheme is employed by the programmable COder / DECoder (CODEC) to convert incoming packetized communications to incoming user communications, and outgoing user communications to outgoing packetized communications. These impediments may also take the form of communication problems along and between the various network segments. In these cases, the processor may choose a more appropriate communication pathway with which to route the packetized communications.

The invention discloses an intelligent motorcade lane-changing method adopting a fairly mature single-vehicle lane-changing technology to carry out safety control, and follow-up vehicles of a motorcade safely change the lane after successful land-changing of the front vehicles. The lane-changing method is efficient and safe, original formation of the motorcade cannot be disorganized by other manned driving vehicles, and then communication problems between cars in the motorcade cannot be disturbed. The intelligent motorcade lane-changing method is simple, and reliability is high.

A method and system includes the ability for individuals to set up an ad hoc digital and voice network easily and rapidly to allow users to coordinate their activities by eliminating the need for pre-entry of data into a web or identifying others by name, phone numbers or email. This method is especially useful for police, fire fighters, military, first responders or other emergency situations for coordinating different organizations at the scene of a disaster to elevate conventional communication problems either up and down the chain of command or cross communication between different emergency units. The method and system provides that the users are only required to enter a specific Server IP address and an ad hoc event name, a password and perhaps the name of the particular unit. The system therefore defines the method of accomplishing the ad hoc network by providing all responding personnel that need to communicate with PC's or PDA's which are interconnected to the IP Server using cellular or other communications. Additional communications can be established between users that have RFID tags.

The invention relates to a distributed hash table (DHT) network-based anonymous communication method. With regard to three kinds of basic operations, including the resource publishing operation, the resource searching operation, and the resource transmission operation, of the traditional DHT network, a certain anonymous mechanism and security mechanism are introduced, thereby solving an anonymous communication problem in the DHT network. An anonymous mapping path is constructed at the resource publishing stage and a mapping node is determined, so that an anonymous base is provided for the resource publishing operation; a probabilistic forwarding strategy is used at the resource searching stage, so that the resource searching operation has the anonymous property; and at the resource loading and transmission stage, the mapping node is used as a relay node to carry out data transmission and combination with the session key encryption data is used, thereby guaranteeing the anonymous transmission and secure transmission of data. On the basis of combination of the three parts, sender anonymity, receiver anonymity, and communication relation anonymity are realized, thereby achieving objectives of user privacy protection and secure and stable operation of the whole DHT network.

The invention discloses a multiple protocol layer translation method for establishing a hybrid network of Internet protocol versions 4 and 6 to solve the communication problem of the transition of the Internet towards an IPV6 network, which can effectively reduce capital input, improve information transmission efficiency, realize seamless exchange visits and smooth transition and establish the multiple protocol layer translation technique of the hybrid network. The MPLT technique consists of three basic constituent parts, namely, an address / port translation and conversion module at the lowest layer, protocol translation and conversion modules PT64 and PT46 at the middle layer, and an translation module of an application layer at the top layer, and through applying the multiple protocol layer translation technique MPLT in a proxy server that connects two types of networks, IPv4 and IPv6 and under the condition of not changing the original network topology, the three big problems of the network interconnection of different internetwork protocols are solved skillfully. The technique is characterized by fulfillment by layering, adding the flexibility and adjustability of a system through decomposing the function of translating two different network protocol data packets to various layers, and carrying out address / port conversion, protocol conversion and application layer conversion separately to extend flexibility.

The invention discloses a communication method between hosts in different network segments in a SDN network. The method comprises the following steps: a controller obtaining SDN global network topological information through detection; sending a message to the controller which is acted as a gateway, forwarding through the controller; a device index modules establishing a device index using three-layer IP address as the index after the controller receives the message; a device management module querying a source device and a target device according to the established device index; a device detection module constructing an ARP request according to the IP address of the target device, and then sending the ARP request from all edge exchangers; the controller constructing a forward stream table item to issue to an exchanger in a selected route; matching and forwarding a source target host device communication message according to stream table information in the exchanger. The cross-network segment communication problem in the same SDN network can be solved through the adoption of the method disclosed by the invention, and the node change in the network is small, and the method has strong transparency and expansibility.

The invention discloses an identity-based wireless sensor network security trust method. In the method, firstly each node in the network is loaded with a trust management structure; wherein the trust management structure is composed of a secret key management module, a receiving credit module, a storage credit module, a credit calculating module, an application selecting module, a route management module, a decision making module, a credit management module and a monitoring module. On the basis of the trust management structure, a trust communication network is established by broadcasting query node information among nodes, receiving query respond and updating node credit and by identity-based public key password encryption and authentication among nodes, so as to realize safe communication of credit information among nodes. The invention reduces complexity of credit calculation in the wireless sensor network, improves security of communication of the wireless sensor network trust system, solves communication problem of a source node and a destination node under multi-hop condition, and can meet the requirement of large-scale self-organized network application.

The present invention relates to a method for demodulating reference Chirp ultra- wideband system group based on active frequency spectrum compression code which can solve problems of serious ultra-wideband wireless transfers multi-path interference, difficult miniaturisation, poor coexisting performance and low communication distance. The method includes steps as follows: generating a waited-module baseband signal, information bit transmitted in code element period for processing data mould, data by-pass road in code element period and orthogonal code word in reference by-pass processing orthogonal code moulding in data by-pass road and reference by-pass road, processing coalition to the signal in data by-pass and reference by pass with addition, then multiplicating, moulding the multiplicated signal for generating transmitted signal, and transmitting by antennae, processing oblique pulse compressing under condition of gauss white noise, demoulding orthogonal code to the signal, processing multiplication demoulding orthogonal code for the signal compressed by active frequency spectrum with orthogonal code, and processing information judgement to the result. The method is advancedand scientific which can solve efficient communication problem in middle remote distance ultra- wideband system.

The invention relates to a secure communication method for a distributed multi-granularity controller of a software defined network based on proxy, and belongs to the technical field of inter-domain secure communication of a multi-domain SDN. The method comprises the following steps: designing architecture of a distributed multi-granularity security controller, wherein the architecture comprises a message data packet format between controllers, establishing a communication tunnel via the connection between a controller domain and inter-domain proxies and the connection between the inter-domain proxies, and completing neighbor discovery between the controller, two-step identity authentication and encrypted transmission to achieve direct communication between multi-domain network controllers. In the communication method, the infrastructure is based on the security controller and the inter-domain proxies, a message of a control plane is released to a data plane by the inter-domain proxies for transmission, and thus the communication problem between independent control planes is solved; and meanwhile, the two-step authentication scheme of communication of the controller is given based on a challenge response mechanism and a DTLS protocol, service supply can be defended and refused, and the identity authentication is completed to improve the security.

The invention discloses a synchronization time-division multiplexing bus communication method adopting a serial communication interface. Data receiving lines and data delivery lines of a host machine and slave machines are all connected with a bus respectively. The method is that each slave machine receives data through a serial communication interface (SCI) when the host machine sends downstream data message correspondingly needed by each slave machine once, the slave machine begin to send upstream data message after a certain time interval, a next slave machine begin to send upstream data message after same time interval when a last slave machine sends the upstream data message, and the bus communication method is achieved and the like. Only two physical connection lines are used to achieve high-reliability difference connection on the basis possessed by most majority of microprogrammed control units (MCU), simultaneously high-speed real-time requirements can be met, a bus communication problem of an internal module of the device is solved, real-time controllable communication is achieved, complexity of a hardware circuit is reduced, and generality and reliability are strengthened.

The system to automatic feedback teaching effect information comprises: the hand-held terminal device sends current teaching effect information document to remote server when connecting computer; after receiving said information document, the remote server appends the document content to teaching effect information database built for every user, starting intelligent analysis device for analysis, determines synchronous textbook according to syllabus ad information analysis; the terminal downloading the book automatically; the remote server sends teaching effect information to student-affair receiver terminal. This invention can solve the communication problem between parents, school, teacher, and student, and make parents know student status and knowledge loophole to supply a gap.

An interconnection method of a wireless multimedia sensor network and a wireless local area network Internet is mainly used to solve the communication problem between the wireless multimedia sensor network and the Internet. The device of the interconnection method is a gateway node. The main function of the gateway node is for converting protocols and is characterized in that the gateway node has two communication modules, respectively an wireless multimedia sensor network ZigBee communication module and a wireless local area network 802.11g communication module; the former is used for receiving the data sent from the wireless multimedia sensor network, the latter is used for sending the data to a wireless access point of the wireless local area network, a processor chip is used for the conversion between wireless multimedia sensor ZigBee communication protocol and wireless local area network 802.11g communication protocol; a memory module is used for storing the data received from the wireless multimedia sensor network and the data is forwarded to the Internet through the wireless local area network.