935results about How to "Reliable communication" patented technology

A medical monitoring system that brings the hospital-campus telemetry experience to the patient home. This system is designed to enable effective step-down patient care in the home setting while providing the patient with the freedom to go anywhere and remain “logically” tethered to the system. The system achieves this by being distributed in nature, globally accessible, highly scalable, with near real-time concurrent reporting and analysis of multiple physiological parameters, and making this information real-time accessible to healthcare practitioners.

It is to provide a radio communication system capable of performing highly reliable reading / writing communication even though the RFID tags face in the random directions. The radio communication system comprises an RFID tag used for identification, a reader / writer for performing transmission and reception of information between the RFID tag by radio waves, and a plurality of reflecting plates in a space where a plurality of RFID tags are accumulated. The reflecting plates direct traveling direction of the radio wave irradiated from the reader / writer towards the RFID tags. A part of the radio waves irradiated from an antenna of the reader / writer is directed to travel three-dimensionally towards the space by the effect of the reflecting plates. Moreover, the radio waves traveling in the same direction among the reflected radio waves by the plurality of reflecting plates together allow attenuation caused due to distance to be reduced extremely.

A WCDMA system includes a Base Station (BS) transmitter, or forward transmitter and a pilot channel that transmits control signals between the BS and a Mobile Station (MS) to reconfigure their transmitter / receiver. Reconfiguration is performed according to the prediction of the channel attenuation and the threshold set at the BS or MS based on its channel power probability density function separated into three distinct equal probable regions. In one embodiment, Seamless Rate Change (SRC) / Transmitter Power Control (TPC) logic uses the predicted channel attenuation to signal both the transmitter and the receiver in a channel to reconfigure their transmit power level according to the power density function (pdf) of the channel power and threshold level. A transmission rate is reduced when the power level is below the threshold and increased when the channel power is above threshold. The pilot channel is used to signal the mobile station and the base station.

A WCDMA system includes a Base Station (BS) or forward transmitter and a pilot channel that transmits control signals between a Mobile Station (MS) and BS to reconfigure their transmitter / receiver according to the prediction of the channel power and channel power probability density function separated into three distinct equal probable regions. Data signals are encoded using a one-half Viterbi encoder and interleaved. The interleaved data bits are modulated using Quadrature Phase Shift Keying (QPSK) modulation. The QPSK data is multiplexed with the pilot channel and spread by an appropriate code in an OFDM transmitter modified by a long code. Output of the transmitter may be provided to two diverse antennas for reliable communications to the receiver. Data may be received at two diverse antennas. The outputs are provided to match filters coupled to a coherent rake receiver and a channel prediction system. The future attenuation of the channel coefficients and power are determined by the prediction system for several milliseconds. The power levels of each finger in the Rake receiver can be predicted and the strongest ones used in determining the optimum transmitter power or rate control for operating the system transmitters and receivers based on computing a long range power prediction of each finger of a rake receiver.

A system and method are disclosed for utilizing resources of a network. A constructive proof that a subset of resources is sufficient to satisfy the objective of a system can be generated. The constructive proof can comprise instructions for using the subset of resources. A set of computer-executable instructions can be created from the constructive proof and executed on a host device. The computer-executable instructions can control a data output device according to the instructions of the constructive proof.

The present invention is a method and apparatus for protection of products and packaging against counterfeiting using dedicated authentication protocol coupled with portable devices. It is based on the product identification information, i.e., PIN, generated by the product manufacturer, stored in the product database and added to product or packaging in an open and / or a hidden form. The open part is directly available to the consumer before buying, opening or consuming the product or package or damaging its integrity while the hidden part is only revealed after these operations. The hidden information can also be disappearing after a predefined interval of time or number of trials or usages. Both parts are communicated to the authentication server in a predefined order to verify the product or package authenticity. The presence, absence, or multiple requests for the same product PIN, confirm or reject product authenticity or detect attempt at attacking the system or at using counterfeited products.

Techniques are provided to assign radio resources with one of two or more types of assignments on a frame-by-frame basis. The first type of assignment uses subcarriers that are contiguous in both time and frequency, and the second type of assignment uses subcarriers that are disjoint and equally-spaced in frequency. The types of resource assignments can be multiplexed in a frame by dividing the frame into two zones, each zone of a different type. The demarcation between the first and second zones is implicitly indicated by the assignment messages for the mobile stations. Based on the loading conditions, the base station selects one of two demarcation strategies to use and communicates the selection implicitly by using one assignment message for a mobile station.

A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lines. Each RAM cyclically converts analog signal values to digital, forming data packets. Interrogation commands emanating from the CRU and relayed with strategic delays by intervening LTUs and RAMs are received by the RAM. Each command causes the RAM to transmit a data packet. Strategic delays are set such that the transmission capacity of the line is best utilized. Power and frequency of transmission are selectable by the CRU to optimize performance. Cables contain multiple communication pairs. The network path between the RAM and the CRU is established from the CRU and altered in event of malfunction. All types of network elements are interconnectable. Recorded samples are synchronous.

A method, device, and system in which radio links between relays and users are optimized separately from the links between relays and base stations and in which multiple simultaneous data streams between relays and base stations are created. The system includes transceivers of at least three kinds with two kinds of radio interfaces. The first kind of transceiver, a base station (BS), is connected to the core network with a link of wire line quality. The second kind, a relay station (RS), is connected to the BS with a first radio interface, and to the third kind, the user equipment (UE), with a second radio interface. The first and second radio interfaces can operate, at least in part, using the same frequency bandwidth. The UE can also connect directly to the BS using the second radio interface if the BS is closer than any RS.

The invention pertains to an intelligent home control technical field, a telephone and ZigBee technology based intelligent home control system, which consists of home control center and several ZigBee technology based wireless communication control modules. The home control center and each control modules are connected with one ZigBee wireless communication module, through these wireless communication modules, the data or commands may be transferred between the control center and control module. The home control center is connected with the telephone network, realize the control of the whole system through the home phone or remote phone. Moreover, through wireless branch phones or mobile phone, the user may control all home equipment at any places. Compared with the communication means such as available bluetooth, and infrared ray etc., it is low cost, low power consumption, large coverage etc, especially comply with the IEEE802.15.4 protocol, if interconnect with other relevant products, the system may have an excellent versatility and expansibility.

A novel and useful apparatus for and method of multicast and broadcast service (MBS) macro-diversity based information processing for use in MBS enabled wireless communication systems. MBS allocations and transmissions from base stations are not coordinated and independent of each other. The characteristics of the MBS signal, such as waveform, modulation, timing and frequency domain, used for transmissions in one or more MBS zones by a base station are uncoordinated and unsynchronized with respect to transmissions in other base stations or MBS zones. They all, however, contain the same information content and relate to the same CID (MCID and / or SA). The MS, using multiple detection techniques, uses time and frequency diversity reception techniques to combine MBS transmissions received from multiple base stations. Base stations and / or the network inform mobile stations of whether or not uncoordinated MBS data transmission is supported on the network via a TLV transmitted during the MBS connection setup process. If supported, mobile stations can receive multiple MBS data signals, combining them to generate a single MBS data output stream.

A system for regulating access to a resource by a plurality of users is provided. The system comprises: a plurality of portable access keys, each being provided to one of the users and having an associated variable access parameter; an access barrier, having an open state allowing passage through and a closed state denying access to the resource, and defining an access queue; a sensor that determines an access queue characteristic related to a number of users in the access queue; a controller, which sets an access criterion based on the determined access queue characteristic; and a detector, located at the access barrier and which determines the variable access parameter of a portable access key when it is brought into the vicinity of the detector. The controller sets the access barrier in its open state if the variable access parameter determined by the detector meets the access criterion.

Methods and apparatus for forming and maintaining an ad hoc mesh network suitable for reliable voice and data communications in underground, industrial and other hazardous environments. This invention includes support for cooperative negotiation of dedicated transmission bandwidth for all fixed network nodes, determination of network time synchronization without a pre-determined time master, discovery and merging of adjacent ad hoc mesh networks, and routing techniques for voice, data and network status packets which react instantaneously to network topology changes. Furthermore this invention provides a reliable communication network for mobile nodes carried by personnel and sensor nodes that are fixed or mobile that supports voice, data and tracking / situation awareness. A current application for this technology is a coal mine communication system with an operations center to dispatch, monitor and control coal mine operation including communication and location of mine personnel, and environmental conditions in the mine.

Communication networks having redundant signal paths for sensed operating conditions and control parameters for electrical power transmission and distribution systems.

A system for providing reliable communications between components of an irrigation system is provided. The system includes a central control, a number of communication systems each representing a transmission channel, an irrigation controller having a receiver that is configured to receive signals from the communication systems, and one or more valves controlled by the irrigation controller to provide irrigation. According to one aspect of the system, in order to direct the irrigation controller to take certain actions, the central control first generates a message. The message is then delivered to the communication systems. In one instance, the message is transmitted by the communication systems in a rotating manner, i.e., the communication systems take turn in transmitting the message in a predetermined cycle. To ensure proper reception of the message, the irrigation controller conforms to the rotational transmission schedule of the communication systems and monitors the incoming signals accordingly. The received message is then used by the irrigation controller to act on the valves, alter an irrigation schedule or otherwise control irrigation.

In one embodiment, a first sensor node 100 includes a radio to effect wireless communications; a sensor module 204 to sense a selected parameter; and a scheduler 228 that selects a listen time for the first sensor node, such that, during the listen time, the radio is activated and able to receive wireless signals and, during a time other than the listen time, the radio is deactivated and unable to receive wireless signals, and causes transmission to a second sensor node a first message. The first message includes a time offset from a transmission time of the first message, the time offset indicating a timing of a first listen time for the first sensor node. In response, the node 100 receives, from the second sensor node, a second message, with the time selected by the second sensor node to transmit the second message to the first sensor node being based on the time offset.

A terminal station radio communication device belongs to a second radio communication system which shares a frequency channel with a first radio communication system in which a radio terminal station communicates with a radio base station in a predetermined time period using a predetermined frequency channel. The terminal station radio communication device includes: a transmission power determining unit which sets up signal transmission power, the signal transmission power being usable for communications between radio communication devices belonging to the second radio communication system, and being determined such that reception power at the radio base station is below a predetermined threshold; a synchronizer enabling the radio terminal station to obtain timing information to start signal transmission; and a signal transmitter starting transmitting the signal at the timing represented by the timing information and terminating the signal transmission within a predetermined time period.

A system and method for modulating and coding a signal is disclosed. Data from a Media Access Control (MAC) layer is convolutionally encoded. Robust coding of the data from the MAC layer is performed either before or after the convolutional encoding. The coded data is differentially modulating and then Orthogonal Frequency Division Multiplexed to create an OFDM output signal adapted to be transmitted on a power line network. The robust coding may be a repetition 2 coding or a repetition N coding. The robust coding may add an outer code prior to the convolutional encoding. The robust coding may be Reed Solomon coding performed prior to the convolutional encoding. An optional header for identifying the robust coding is also disclosed along with a method for decoding the header.

A surveillance system utilizing a mesh network having a large number of surveillance cameras. A plurality of limited range transceivers in direct or indirect communication with one or more of the cameras are located at a large number of nodes and are in communication with other transceivers in the network and are in communication with a control station. In a preferred embodiment most of the nodes are equipped with three transceivers to provide simultaneous communication with one or more camera and at the same time receive and transmit information from other nodes. This system utilizes a routing protocol that was initially developed for wireless voice-over Internet protocol services to large regions. This preferred system incorporates transceiver chips that enable communications over multiple frequencies and communications protocols. The signals from multiple frequencies are then converted into a digital format for routing to central command and control facilities, which can in turn communicate with mobile nodes. The use of multiple frequencies will enable simultaneous communication from multiple inputs without the bandwidth constraints of Wi-Fi systems that are designed for point-to-point Internet access. In addition, the use of a mesh network also enables redundancy to allow reliable communications even when one node or channel fails and enhanced security due to random channel allocation. The surveillance units may be mounted on light poles including street light poles. The also could be incorporated into light fixtures that are in turn mounted on the light poles.

Systems and methods for interoperability are disclosed which allow for a user of one network to communicate seamlessly with a user of another network. Users are provided seamless access to data services in different networks without having to subscribe to those networks. In one embodiment an application bridge comprising an application server may be used to service communications while a billing bridge may be provided to control and charge network subscribers. In one embodiment a user in a SMS domain may communicate with a user in an IP domain. In one embodiment, a platform may register with a federated interface of an IM domain to enable non-IM users to communicate with IM users.

In the present disclosure, CSI and / or a plurality of ACK / NACKs related to a group of DL data transmissions may be buffered at the UE as a GACK until a DCI trigger is received from the eNB. When the DCI trigger is received, the UE may transmit the CSI and / or GACK. In this way, HARQ feedback and / or CSI may be reliably communicated even if a CCA does not clear and / or UL subframes are unavailable. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In an aspect, the apparatus may be a UE. The apparatus monitors one or more subframes for a DCI trigger. In a further aspect, the apparatus receives the DCI trigger in a subframe. In another aspect, the apparatus transmits UCI using a subsequent subframe.

The invention discloses a resource reuse method and a resource reuse system for improving the energy efficiency of a D2D (device-to-device) system. The method comprises the following steps that 1, the position estimation is carried out on the emitting end and the receiving end of D2D user pairs, and the position information is obtained; 2, whether the distance from the sending end to the receiving end is greater than the threshold value or not is judged according to the position information, when the distance is greater than the threshold value, the current timeslot idle cellular users are selected to be used as a relay node, in addition, the operation enters the third step, and otherwise, the operation directly enters the third step; 3, the cellular users with resources distributed by a base station and each group of D2D users are respectively combined, and an energy efficiency matrix and a velocity matrix are built; 4, the resource reuse decision making is carried out on the basis of the preset criterion, and the channel reuse matrix is obtained through solving; 5, the reuse cellular users of each group of D2D user pairs and the corresponding optimum emitting velocity are determined. The resource reuse can be carried out at the same time as the expenditure reduction realization only according to the position information of users in a cell, and the total energy efficiency of a communication system is improved.

To connect arbitrary network communication apparatuses by selecting an appropriate route or identifying an IP address in an environment which includes a network using plural NAT routers, which is hierachically connected through plural NAT routers for distributing private IPs.A network communication apparatus (201) includes: a direct search unit (102) which transmits a direct search request to another network communication apparatus (202); a route information obtaining unit (103) which obtains route information of the network communication apparatus (202) from a server (205) which holds the route information of the network communication apparatus (202); and a communication control unit (101) which performs, when the information regarding the other network communication apparatus (202 to 204) is obtained upon the direct search request, communication with the other network communication apparatus (202 to 204) based on the information, and which performs, when the information is not obtained, communication with the other network communication apparatus (202 to 204), based on the route information.

The invention discloses a water level-flow speed-flow rate monitoring integrated device, a water level-flow speed-flow rate monitoring system and a water level-flow speed-flow rate monitoring method. The device comprises a radar water level measuring module, a radar flow speed measuring module, a wind speed measuring module and a flow rate calculating module, wherein the radar water level measuring module, the radar flow speed measuring module and the wind speed measuring module are connected with the flow rate calculating module respectively; the radar water level measuring module is used for measuring the real-time water level data of a river course / channel in a non-contact form; the radar flow speed measuring module is used for measuring the real-time surface flow speed data of the river course / channel in the non-contact form; the wind speed measuring module is used for measuring real-time wind speed data to correct a flow speed of a water surface; the flow rate calculating module is used for calculating to obtain the size of the flow rate of a controlled section of the river course / channel at a current moment by combining with an input relevant parameter of the controlled section of the river course / channel according to the water level data, the flow speed data and the wind speed data. The device can be used for monitoring the water level and the flow speed of the river course / channel in real time, and moreover, can be used for realizing monitoring the flow rate in real time.

An integrated optical transceiver includes an optical receiver that produces a first electrical signal at a reception electrical interface in response to a first optical signal, an optical transmitter that emits a second optical signal in response to a second electrical signal received at a transmission electrical interface, a first optical branching device that receives the first optical signal at an reception optical interface and to direct at least a portion of the first optical signal to the optical receiver, and a second optical branching device that directs the second optical signal to an transmission optical interface. The first optical branching device directs at least a portion of the first optical signal to the second optical branching device. The second optical branching device directs the portion of the first optical signal received from the first optical branching device to the transmission optical interface.

The invention discloses a landslide disaster remote monitoring system, and relates to a landslide monitoring system. The structure of the landslide disaster remote monitoring system comprises the following: a rainfall sensor node (100) and an infrared displacement sensor node (200) are connected with a convergent node (300) respectively to form a wireless sensing network (700), and the wireless sensing network (700), a GSM / GPRS network (800), a terminal GSM / GPRS module (400), a terminal processor (500), and a GIS display screen (600) are connected in turn. The landslide disaster remote monitoring system is used for real-time monitoring of actual rainfall intensity and rainfall duration of landslide and collapse areas, state information of landslide and collapse, and sliding information of dangerous rocks, can objectively and comprehensively monitor and evaluate the rainfall threshold of critical landslide, the evolutive process and the state of landslide, and the landslide and collapse level, and provides a novel real-time monitoring path for landslide and collapse early alarm.