918results about "Data switching details" patented technology

A system is provided for creating a tunneling service from the use of a traditional tunneling protocol, such as the layer two tunneling protocol (L2TP). In particular, the L2TP tunneling protocol, which is designed to go point-to-point between an L2TP Access Concentrator (LAC) and an L2TP Network Server (LNS), is abstracted so that L2TP becomes an access protocol to a tunneling service. A new L2TP tunnel merger and management (LTM) service is created which severs the tight configuration relationships between LAC and LNSs. Only a tight configuration between an LAC and its LTM edge device and between an LNS and its LTM edge device is required. An internal trunk protocol (INT protocol) carries needed information between LTM edge devices to establish ingress/egress L2TP access calls inside of separate L2TP access tunnels on opposite LTM edge devices. The addition of another LAC is accomplished by re-routing L2TP tunnels within the LTM service without reconfiguration of the LNSs, and the addition of another LNS is accomplished by re-routing L2TP tunnels within the LTM service without reconfiguration of the LACs. The LTM service determines the need for both additional trunk and access resources and establishes both new trunk/access tunnels to provide additional resources. The LTM service also determines excess resources on both trunk and access entities and releases trunk/access tunnels to provide the needed additional resources.

A hand-held electronic device having a remote control application user interface that functions to displays operational mode information to a user. The graphical user interface may be used, for example, to setup the remote control application to control appliances for one or more users in one or more rooms, to perform activities, and to access favorites. The remote control application is also adapted to be upgradeable. Furthermore, the remote control application provides for the sharing of operational mode information.

When a blade and/or interconnect device is inserted into the chassis of a powered or live server the procedure is known as hot-plugging. Before power is applied to the hot-plugged blade and/or interconnect device the fabric type of already installed blades and/or interconnect devices is correlated with fabric types of newly hot-plugged blade and/or interconnect device. Depending upon results of the correlation, power to the hot-plugged blade and/or interconnect device is allowed or denied.

A system and method is provided for a user interface directed to publication and discovery of the presence of users on a network. A sidebar tile is provided that peripherally and unobtrusively displays the presence information of nearby users on the network. The sidebar tile is also used to notify a local user that their information is also being published on the network. The sidebar tile provides options for selecting to change, enable, or disable the presence discovery service.

A universal demarcation point for managing the delivery of communications services to a subscriber that provides an interface between a utility distribution network and subscriber owned equipment. The universal demarcation point includes a utility accessible portion and a subscriber accessible portion. The utility accessible portion has an input port, an output port, a plurality of modular connectors, a power supply, and a plurality of service modules. The input port provides access to the universal demarcation point for delivery of communications service from the utility distribution network. The communications services are delivered through a hybrid cable. The hybrid cable has a plurality of fiber optic cables and a plurality of copper cables. The fiber optic cables are capable of transmitting light signals and the copper cables are capable of transmitting electric power. The output port provides access for delivering the communications services from the universal demarcation point into the subscriber's dwelling. The plurality of connectors are fixedly mounted to the universal demarcation point. The power supply is removably mounted to the universal demarcation point. The power supply converts the electric power into a voltage for powering the operation of the universal demarcation point. The service modules are capable of plugging into the modular connectors and convert the light signals that are transmitted on the fiber optic cables onto cables that are suitable for use in the subscriber's dwelling. The subscriber accessible portion is adjacent to the utility accessible portion and has ports that enable the subscriber to test the integrity of the communications services delivered from the utility distribution network.

Methods and systems for the negotiation of a population of RFID tags with improved security is provided. In one aspect, a binary traversal is performed to singulate tags without using information that directly identifies the tags in the tag population. A key is generated to identify each RFID tag of the population of RFID tags. The generated key does not include bits identifying an item with which the particular RFID tag is associated. A binary tree algorithm is operated to identify one or more tags in the population of RFIDs tags using the generated keys. In another aspect, frequency hopping and/or spread spectrum techniques are used to provide improved security while negotiating tags. In another aspect, the reader causes the tags to scroll series of bits back to the reader for each bit sent to the tags to provide improved security.

The invention discloses a back plate system which comprises an electrical back plate body, a plurality of single plates and active parallel optical cables, wherein each single plate is provided with one or more high speed electric connectors used for adapting the active parallel optical cables, the electrical back plate body comprises one or more high speed signal connection opening areas used for extension of the high speed electric connectors, and the high speed electric connectors on two adjacent single plates are connected through the active parallel optical cables. Through the back plate system, exchange bandwidth of a traditional back plate is increased.

The utility model relates to a network-on-chip digital router and a parallel data transmission method thereof, also known as the digital universal joint, pertaining to the field of the large scale integration. The network-on-chip parallel digital router is characterized in that a FIFO traveling wave shift buffer storage, a co-gradient matrices switch array, a route decision module and a parallel network port are gathered on the chips. Such method is different with the traditional network parallel data transmission. The utility model has the advantages that 1. The data transmission jam is not caused due to the increase of on-chip-bus with the processor. 2. The network parallel data transmission method improves the message transmission rate and reduces the time and resources needed for the conversion between parallel and serial data, so as to accelerate the data communication rate among the processors and increase the interoperability of a plurality of processors.

The invention relates to the remote control technology. The invention provides a network server centralized monitoring system and a method, which aim at the defect that a necessary network server automatic monitoring measure is lacked in the prior art, so the network service with the failure can not be restored in time. The network server centralized monitoring system comprises at least one monitoring terminal and a monitoring platform, wherein the monitoring terminal is arranged on the network server to be monitored, and is used for collecting and sending the state information of the monitored network server, and the monitoring platform is in communication connection with the monitoring terminal, is used for receiving the state information sent by the monitoring terminal, and sends control commands to the monitoring terminal according to the state information to realize the remote control on the network server. The invention also provides a network server centralized monitoring method. Through installing the monitoring terminal on the network server, the monitoring platform can master the current operation state of the network server in real time, and can realize the remote control on the network server through the monitoring terminal, and the safe operation of the network server can be ensured.

A data transfer control device includes an OUT-transfer transmitter circuit which transmits OUT data by driving a serial signal line, a clock-transfer transmitter circuit which transmits a clock signal CLK by driving a serial signal line, a PLL circuit which generates the clock signal CLK, and a power-down setting circuit which sets a power-down mode. In a first power-down mode, the OUT-transfer transmitter circuit is set to the power-down mode, and the clock-transfer transmitter circuit is set to the power-down mode to stop a system clock signal of a target-side data transfer control device. In a second power-down mode, the OUT-transfer transmitter circuit is set to the power-down mode without setting the clock-transfer transmitter circuit to the power-down mode.

The invention discloses a route node microstructure of a network on chip, which comprises a head decode module, an input buffer module, an input control module, an output arbitration module, an output buffer module and an output control module. The head decode module performs the head analysis to data entering the route node from the upper route node, and inputs the data to the input buffer module; the input buffer module is used for the temporary storage of the data, and outputs the data to the output arbitration module under the action of the input control module. After the data enters the output arbitration module, the output arbitration module determines whether outputting the data to the output buffer module according to the state of the input control module, and the output arbitration module controls the whole output link so as to realize that the data is transmitted to the next route node. Through the route node microstructure of the invention, the data transmission among the route nodes of the network on chip can be realized, and the transmission efficiency can be greatly improved.

In the method of erasure decoding of acknowledgement (ACK)/negative acknowledgement (NACK) feedback information, a state of received ACK/NACK feedback information for associated sent data is detected based on at least one threshold derived using an objective function. The objective function includes at least a first term representing an affect on data throughput for at least one possible type of error in detecting a state of the received ACK/NACK feedback information.

The invention discloses a method for realizing configuration of main and auxiliary board cards as well as board cards. The method comprises the following steps of: for a plurality of alternative board cards in a plurality of board cards, transmitting a competition message to other alternative board cards by each alternative board card, wherein the competition message transmitted by each alternative board card carries the hardware information of each alternative board card; in a competition process, receiving the competition message coming from other alternative board cards by each alternative board card; comparing the hardware information of each alternative board card with the hardware information in the received competition message by each alternative board card, and determining the alternative board cards winning in the competition according to a competition principle, wherein the competition principle is used for determining the alternative board cards as main control nodes according to the comparison result of the hardware information; and determining a unique main control node according to the competition conditions of the plurality of alternative board cards, and determining one alternative board card in other alternative board cards as an auxiliary control node by the main control node. In the invention, the determining range of the main control node is not limited in one fixed frame, and the performance of the finally determined main control node can be ensured.

The optimization method for P2P application in MAN comprises: a. when requiring downloading some resource, calling this P2P node as the request P2P node; b. searching the P2P index server to find out the P2P node list included the target resource, and calling as resource P2P node; c. from resource P2P node list, finding out the one with shortest distance with the request P2P node; and d. downloading target resource from one or more resource P2P nodes. Compared with prior art, this invention limits P2P flow on network edge as far as possible, can avoid network congestion led by P2P business, and fit to spread widely.

The method includes dividing network devices which need to be disposed and upgraded into groups and keeping the grouping information and the detail information of the network devices and then sending local document for disposing and upgrading the network devices to all the network devices in relevant network device grouping according to the requirement. The present invention can make grouping for the network device such as routers and can carry on the batch size disposition and upgrading for each group of network device at the network management centre so the efficiency of disposition and upgrading is raised greatly, especially for large amount devices which need to carry on uniform disposition and upgrading.

A compact serial communication device is disclosed that is formed from simplified circuits on a master side and a slave side and does not need a synchronous signal and a switching unit for switching transmission and reception operations, and is able to reduce load of the slave side. The master transmission/reception circuit outputs a serial data signal DATA to a transmission path with the serial data signal DATA being generated by superposing a low level superposition pulse on a clock signal, when the clock signal is at the high level, according to an output data signal to be output to the slave transmission/reception circuits; the slave transmission/reception circuits superposes a high level superposition pulse on the serial data signal DATA input from the transmission path according to an output data signal to be output to the master transmission/reception circuit when the clock signal is at the low level.

The invention provides a network equipment and a message forwarding method; wherein, the network equipment comprises a first multicore processor and a second multicore processor. The first multicore processor comprises a first classification unit and a first forward processing unit which comprises a plurality of core units, and the second multicore processor comprises a second classification unit and a second forward processing unit which comprises a plurality of core units. By adopting the equipment and the method of the invention, the message forward processing capability of network equipment can be effectively improved.

Fast connections of end users to the Internet are becoming more and more common today, and the most common types of these fast connections are ADSL and cable modems. These connections are typically highly asymmetric and allow typically 500-1500 KBit per second (most typically 750 or 1500 Kbit) for the downlink and typically for example 64 KBit or 96 Kbit or 128 Kbit per second for the uplink (although standard ADSL can in principle support up to 8 Mbit per second download speed and up to 800 Kbit per second upload speed), based on the assumption that most users download much more data than they upload. However, at least for some users these limitations are highly undesirable, and these are for example users or small businesses or organizations who want to use the connection also for example for VOIP (voice over IP) communications or Video-over IP communications or conferences or for example running web servers. Actually ADSL is beginning to be replaced by VDSL in places where the distance to the nearest street switchboard is about 1.2 Kilometers or less, which in principle allows up to 52 Mbit per second Download speed and up to 16 Mbit per Second Upload speed. However, even when end users become connected directly by fiber-optics, the typical ratio of much more Downlink versus Uplink will remain. The present invention tries to solve the problem for users who need constantly or on a changing basis more Uplink, by preferably allowing users to preferably temporarily change their Uplink-Downlink ratio on a need basis, while preferably keeping the general balance across users. Other variations allow also compensating for example for variations of the average ratio across users for example according to time of day. The patent also covers some relevant issues related to IP telephony.

A receiver circuit includes: a current/voltage conversion circuit which performs a current/voltage conversion based on current which flows through the differential signal lines and outputs voltage signals; a comparator which compares the voltage signals and outputs an output signal; a power-down detection circuit which, when the transmitter circuit transmits a power-down command by current-driving the differential signal lines in a normal transfer mode, detects the transmitted power-down command based on a comparison result from the comparator; and a power-down setting circuit which sets at least one of the current/voltage conversion circuit and the comparator to a power-down mode when the power-down command is detected.

The invention discloses a message forwarding method, a device and a system, wherein the method comprises the following steps: acquiring a source MAC address and an input port number in a message by a first single plate, and querying an MAC address list according to the source MAC address; if the identical entry is not found, learning the source MAC address; and querying a forwarding policy list according to the input port number to acquire a forwarding policy, and sending the message to a second single plate according to the forwarding policy to enable the second single plate to learn the source MAC address, thereby realizing synchronization of the MAC address. By acquiring the forwarding policy, the invention realizes the synchronization of the MAC address under the condition that the current forwarding processes are not changed, and the execution efficiency of a CPU can not be influenced.

This method includes these steps: The single board (SB) reports state shift message of the field replaceable unit to the chassis management board (CMB); CMB obtains the hardware address of SB from the state shift message; CMB obtains the related physical slot number and slot type from the hardware address; CMB sends the slot number and slot type to SB. The system consists of CMB and SB. The invention utilizes the obtained SB hardware address to find the related physical slot number and slot type from the chassis FRU info storage to locate the physical position of SB. The method possesses compatibility. It can be used in any type chassis to obtain correct SB physical slot number and slot type.

The invention discloses a network-on-chip oriented low delay router structure, aiming to solve the problems that the existing router structure has relative large delay in forwarding fragments and can not make full use of storage resources in physical links. The invention consists of P numbered input units, P numbered output units and P numbered channel double buffer; each input unit consists of a buffer distributor, an input buffer and p numbered virtual output address queues; each output unit consists of a P:1 arbiter and a P:1 selector; the channel double buffer consists of a controller and a double buffer; the controller consists of a read pointer, a write pointer and a state machine; and the double buffer consists of two registers and a selector. The fragment transmission between routers adopts a ready-effective synchronous handshake protocol. By adopting the invention, both the delay in forwarding the fragments and the design complexity are reduced, the storage resources in the physical links are fully utilized, and the use ratio of the buffer of the input unit is improved.

A videoconferencing center (31, 33) for data communications and teleprocessing is provided which comprises first routing switches having a plurality of sending ports (51, 53, 55, 57) and a plurality of receiving ports (50, 52, 54, 56), each sending port adapted to be operatively connected to a receiving data terminal equipment unit (10, 28, 29) or to a receiving port of second routing switch (32, 34), each receiving port adapted to be operatively connected to a sending data terminal equipment unit (10, 28, 29) or to a sending port of another group switching center (32, 34). Each receiving port is assigned a receiving stack (102) that is addressable in a single logical address space and each sending port is assigned a sending stack (103) for containing addresses of said single logical address space. The single logical address reduces the risk of losing data received, which risk results from the necessary limits on physical addresses of stacks. This group switching center is particularly useful for high-speed links of the type that may be required for a videoconferencing system.

The embodiment of the invention discloses a method for implementing link state database synchronization. The method comprises: receiving link state notifying message; comparing the link state notifying message with that in link state database, updating link state notifying message in the link state database if the received link state notifying message is new message, transmitting the received link state notifying message to virtual neighbor with established virtual neighbor relation. Accordingly, the embodiment of the invention provides a router including circuit board, master control board and standby master control bard. The embodiment of the invention also provides a circuit board and master control board. The embodiment of the invention can simply implement link state database synchronization.

The embodiment of the invention discloses a data sharing method and a communications system and a device thereof, for realizing the data sharing of a plurality of host computers to reduce the cost, The embodiment method of the invention includes: receiving the data processing request transmitted by at least two host computers through the PCIE channel by the peripheral equipment expansion interface PCIE exchanger; transmitting the received data processing request to the memory system, indicating the memory system to obtain the corresponding data according to the data processing request, and indicating the memory system to perform the corresponding process on the obtained data, wherein the memory system and at least two host computers perform the address space isolation through the non-transparent port bridge NTP in the PCIE exchanger. The embodiment of the invention also provides a communication system and a PCIE exchanger. The embodiment of the invention realizes the data sharing between a plurality of host computers.

This invention discloses a multi-frame cascade system for ATCA kife server, in which, each frame includes several exchange node plates and kife node plates, and the cascade system includes: a frame of host of the ATCA kife server, a frame of a sub-set and an exchanger, and the exchange node plates of the host frame and the sub-set frame are interconnected with the exchanger to realize multi-frame cascade of the ATCA kife server. This invention also provides a method for the cascade.

The invention discloses a centralized debugging system of equipment plate cards in distributed equipment, which comprises an analysis proxy device and at least one distributed device, wherein, the distributed device comprises a connecting unit and a plurality of equipment plate cards; the analysis proxy device analyzes a debugging order from a debugging order message from outside, confirms the equipment plate cards to be debugged and transmits the debugging order to proxy implementing modules of the equipment plate cards to be debugged by the connecting unit; the proxy implementing modules transmit the received debugging order to the module to be debugged of the equipment plate cards for implementing, and transmit the implemented debugging results to the analysis surrogating module by the connecting unit, the analysis surrogating module codes the implemented results into debugging result messages for sending out. The invention also discloses a centralized debugging method of the equipment plate cards in the distributed device. By using the system and method of the invention, the implementation cost and complexity of the debugging can be reduced.

The present invention discloses a management method of the energy of a PCI Express bus. A main control board detects whether a service board is present, if not present, then the main control board does not provide electricity to the service board, and the PCI Express bus link corresponding to the service board is configured as a state of link power off; if present, then the main control board provides electricity to the service board, and when the service board detects that an interface board is present and that the connections on physical interfaces are normal, the PCI Express bus link corresponding to the service board is configured as a link working state, and a PCI Express bus port of the service board is configured as a device working state. The present invention realizes information transmission by the IPC channel cooperation existing in the system, and as a result, the states of the present detections of the service board, the interface board and the physical interfaces of the interface board and the states of the PCI Express bus link on a control system and a device come into a state of low energy consumption, realizing the energy management of energy saving.

The present invention relates to a delay-insensitive DI data transfer circuit based on a current-mode multiple-valued logic for transferring data regardless of a delay time of transmission according to a length of wire. The delay-insensitive data transfer circuit of the present invention, in a delay-insensitive data transfer circuit transferring an input request signal and a data signal from a data transmission unit to a data receiving unit, comprises: an encoder for outputting a signal which has been converted to current-level signals in response to voltage-level input of data signal and request signal from the data transmission unit; and a decoder for restoring the voltage-level signals from the current-level signals of the encoder, abstracting a data signal and a request signal from the restored voltage-level signals, and outputting the data signal and the request signal to the data receiving unit.

A method to detect a lost status report determines that a second status report is required when an AMD PDU not negatively acknowledged in the first status report, an AMD PDU with a polling bit set, or the last negatively acknowledged AMD PDU is received after the expiry of a roundtrip timer and before all the negatively acknowledged AMD PDUs in the first status report are received. The method provides a deterministic way of detecting a lost status report, resulting in improved transmission throughput in a wireless communications system.