141 results about "Switched mesh" patented technology

A communications system includes a multiple-input/multiple-output (MIMO) architecture for high capacity switched mesh networks. The MIMO architecture has a plurality of radio frequency chains. One of the plurality of radio frequency chains is configured to apply a first frequency offset to a base frequency of an output signal to generate a first transmitting frequency; and another of the plurality of radio frequency chains being configured to apply a second frequency offset to the base frequency to generate a second transmitting frequency. The system uses the carrier frequency offset to lock the clock of the master subsystem to the clock of the slave subsystem, thereby enabling bandwidth expansion to be employed on the MIMO data streams.

The embodiment of the invention discloses a service data transmission method and a device. The service data transmission method comprises the following steps: obtaining pre-configured time slot resource information of a switching network for service; obtaining a service data unit which carries a service identifier; determining time slot resources of the switching network of the service data unit according to the service identifier and the pre-configured time slot resource information of the switching network for the service; and sending the service data unit to the switching network in the corresponding time slot according to the determined time slot resources of the switching network. A transmitting node in the scheme pre-configures the time slot resources of the switching network for the service, and the service can be sent according to the service identifier carried in the service data unit and the pre-configured time slot resources of the switching network for the service after obtaining the service data unit. The application of the technical scheme provided by the embodiment of the invention can effectively ensure the jitter performance of the service.

A bi-directional line switched mesh includes at least one bi-directional line switched ring (BLSR) sharing a common section with a partial bi-directional line switched ring (PBLSR). The partial bi-directional line switched ring has no working traffic along the common section, but may utilize the protection bandwidth associated with the common section of the BLSR in the event of a span failure of the PBLSR. Both electrical and optical PBLSR networks are also disclosed including methods of operating the asymmetrical ring nodes having unconfigured working ports (spans).

The invention discloses a scheduling method, device and system of a data exchange network. According to the embodiment of the invention, input port equipment is used for measuring a VOQ (Virtual Output Queue), and then a request bandwidth is calculated according to a measured result. Compared with the method for determining the request bandwidth by taking a priority level of a data flow according to the cache state of the data flow in the prior art, the method for calculating the request bandwidth has the advantages that the current state of the data flow can be more accurately reflected, so that the data scheduling between the input port equipment and the VOQ can be more reasonable and effective, and the data scheduling can be adapted to the actual state of the current network. Therefore, the scheduling method, device and system of the data exchange network can be more suitable for a large-sized, high-speed and long-distance exchange network.

The present invention relates to a car special-purpose information service communication system and its method. It includes calling service centre, radio communication terminal which is communicated with calling service centre by means of public telecommunication exchange network. The described calling service centre includes speech service platform and short message service platform, and the described radio communication terminal is a universal radio mobile telephone with special-purpose car information service menu. By creating said system the car user can make inquiries of calling service center by means of radio mobile telephone at all times and places, and can quickly and conveniently obtain various informations about car services. It can provide more complete function and after-service for car user.

Technology for rerouting a data stream in a communication circuit switched mesh network comprising one or more cross-connecting nodes, the data stream comprises a plurality of data frames each associated with at least one overhead byte, and the rerouting is performed by using a path identifier while switching the data stream at one or more cross-connecting nodes; the path identifier is carried by at least one overhead byte associated with at least one of the data frames.

The application provides a message forwarding method and device. The method comprises the following steps: a first interface board receiving a first VXLAN message carrying the first VNI, de-encapsulating the first VXLAN message to obtain the VLAN message, and adding the first VLAN identifier corresponding to the first VNI to the VLAN message to send to a switching network board; the switching network board acquiring the outlet interface corresponding to the VLAN message and the second VLAN identifier; replacing the first VLAN identifier in the VLAN message using the second VLAN identifier, and sending to a second interface board from the outlet interface; the second interface board using the second VNI corresponding to the second VLAN identifier to encapsulate the VLAN message to obtain a second VXLAN message, and forwarding the second VXLAN message to opposite-end distributed switching equipment. Through the combination of the interface of the distributed switching equipment and the switching network board, the VXLAN three-layer gateway is realized, and the message forwarding of each of the interface board and the switching network board is realized in a switching chip, and the forwarding efficiency is high.

The invention relates to a packing and unpacking method of an ultra high-speed optical burst-switched network and a system thereof. The packing method comprises the following steps: 1) gathering an electric field IP data packet; 2) generating offset time after the gathered IP data packet is subject to route analysis, and forming an optical control packet; 3) modulating the IP data packet into an optical signal, and performing rate multiplication to the modulated optical signal to form an optical data packet; 4) forming a packet optical bursting packet by the optical control packet and the optical data packet, and transmitting the packet optical bursting packet. The invention provides the packing and unpacking method of ultra high-speed optical burst-switched network and the system thereof, which ensures that OBS network has high transmission rate, simple structure and low cost.

The invention discloses a method and a device for controlling switching communicated network flow. The method comprises the steps of: monitoring the lengths of a unicast virtual output queue and a multicast virtual output virtual queue in real time, and when the length of a certain queue exceeds a jamming threshold, generating a jamming indication signal, and adding a jamming identification on all cell heads of corresponding output ports; detecting in real time whether cells access the jamming queue, and if so, sending out a cell queue-accessing notification message; and judging whether the quantity of the cells accessing the jamming queue reaches a preset threshold or not according to the cell queue-accessing notification message, and if so, adding a link level fluid control effective indication signal on all the cell heads output by the corresponding output ports. The device comprises a jamming detection module and a back pressure module. The invention solves the problem of unreasonable solutions to jamming of unicast/multicast communication modes in the prior art.

The invention provides an IMS signaling analysis system for a power switching network and a method. The system comprises a core signaling processing unit, a plurality of servers and a mirror image switch, the mirror image switch is a multi-layer network switch supporting a port mirror image function, signaling data of each core network element of an IMS and signaling data of an access network terminal are sent to the corresponding servers in a port mirror image mode, and each server communicates with the core signaling processing unit; core signaling processing unit is configured to filter theacquired signaling data; signaling data of a non-SIP protocol is filtered out; SIP messages can be preserved, and the message type and the message flow information of the SIP message can be determined according to the message key field, a signaling flow chart of the SIP message can be drawn according to the message type and the message flow information of the SIP message, and fault diagnosis operation and maintenance processing is carried out in combination with the signaling flow chart of the SIP message and the message key field of the SIP message.

The invention discloses a fax system and method based on satellite mobile communication. The fax system comprises a first fax machine, a satellite mobile terminal, a mobile communication satellite, agateway station subsystem, a core network, a relay media gateway, a public switched telephone network (PSTN) and a second fax machine. The faxing method comprises the following steps: a data fax method between two first fax machines and a data fax method between the first fax machines and a second fax machine. By using the fax method, the fax service application problem based on a satellite mobilecommunication network can be solved, the fax service interconnection and intercommunication problem of the satellite mobile communication network and a traditional PSTN network is solved, and alternate transmission of voice services and fax services is achieved. In conclusion, the system has the advantages of being complete, high in intelligent degree, convenient to use and the like.

The invention discloses a method and system for instantly notifying missed calls of multiple accounts in an IMS network, and the method comprises the steps: sequentially stripping Ethernet frames in mirror image flow data on an IMS network switcher, and obtaining an SIP message; analyzing the SIP message, extracting the calling identifier, the calling number and the called number from the head domain of the SIP message, and storing the calling number and the called number into a memory queue after duplicate removal; and obtaining the calling number and the called number from the memory queue,and if the called user subscribes the missed call instant notification service, sending a notification message to notify the user in time. According to the invention, missed calls in the IMS administrative switching network can be processed immediately, and telephone terminal users are no longer restricted by fixed-line telephones; aiming at a single-user multi-account communication system, integration notification is carried out; only services are provided for subscribers, invalid notifications are avoided, and server resources are saved; the content of the notification message is detailed information, thereby facilitating the instant processing of office staff.

The invention provides a data transmission system, a data transmission method and a data transmission device, and the method comprises the steps that a first subnet server is used for building a communication channel with a second subnet server through a session boundary controller and an exchange network after the first subnet server determines that the safety authentication of a verification account allocated to the exchange network is passed, a data acquisition request is sent to the second subnet server, and file data fed back by the second subnet server is received by the session boundary controller and the switching network; a session boundary controller is used for carrying out transceiving and security authentication on the data acquisition request and the file data; an exchange network is used for transmitting the data acquisition request and the file data and performing security verification on the verification account; and a second subnet server is used for receiving a data acquisition request transmitted through the session boundary controller and the switching network and sending file data to the first subnet server. According to the invention, after the data in the exchange network passes the security authentication of the session boundary controller, two subnet servers transmit the data to ensure the security of the data during interaction.

The invention discloses an on-chip structure and a communication method of broadcast light based on a micro-ring power divider and an organization, for improving structural scalability and broadcast communication efficiency, reduce the difficulty of integrated design and the power consumption of control circuit, includes M * N super nodes, M globally switched networks, N local switching networks and M * N * (M+N) third optical waveguides, M >= 2, N >= 2, M * N super nodes are divided into N groups, each group M, the mth super node in the nth group is denoted by Sn, m, 1 <= n <= N, 1 <= m <= M,each super node includes M compute nodes, one crossover switch, two light modulators and M+N-2 optical demodulators, each global switching network includes N micro-ring power dividers, each local switching network includes M micro-ring power dividers, According to n, m, each super node connects a local switching network and a global switching network, and calculates the super node group number ofthe destination node and the number within the super node group to communicate with the local switching network, the global switching network or the local switching network and the global switching network.

There is disclosed a network communication system that includes data sources and of switches. Each of the data sources and switches is interconnected by a packet-switched network, and is synchronized to a common clock. The system also includes a network controller that maintains records of network characteristics including a transmission delay for each of the data sources and switches, and a transmission delay for links in the packet-switched network. The network controller processes the network characteristics to generate, for each of a plurality of packets of a given type of traffic: a path from a particular data source, and through at least one particular switch, and a schedule of departure times at each of the particular data source and the at least one particular switch. The path and the schedule are optimized to meet jitter requirements for the given type of traffic.

The invention provides a software defined switching network communication method/system, a readable storage medium and a device. The software defined switching network communication method comprises the following steps: when a network communication request appears in a software defined switching network, calculating a communication path among a virtual switch, a forwarding switch and an external network egress switch; allocating labels for route switching to the virtual switch, the forwarding switch and the external network egress switch; and establishing a label-based data flow table corresponding to the virtual switch, the forwarding switch and the external network egress switch according to the communication path, and issuing the data flow table. According to the software defined switching network communication method/system, the number of SDN network flow tables is effectively reduced by multi-flow table grading, the performance of the switch can be effectively improved, the speedof data communication can be effectively improved, the existing physical SDN switch networking can be supported, the expansion of network functions can be supported, the software defined switching network communication method/system have the ability of adapting to different cloud computing platforms and solve the contradiction between network flexibility and performance in existing cloud computingenvironments.

The invention provides a remote-control compartment disinfection device based on a GSM-R network. The device comprises a data acquisition unit, a microcontroller, a DTU wireless transmission unit anda remote control center. The data acquisition unit is electrically connected with the microcontroller through an analog-to-digital converter. The acquisition unit is used for acquiring environmental parameters and transmitting the acquired environmental parameters to the analog-to-digital converter; the environmental parameters are converted into electric signals capable of being recognized by themicrocontroller through the analog-to-digital converter; and the microcontroller performs signal processing and issues a corresponding instruction to the remote control center. The microcontroller isconnected with the remote control center through the DTU wireless transmission unit, the remote control center is used for accurately receiving data in real time, the DTU wireless transmission unit is externally connected with a GSM-R system through a peripheral interface, and the GSM-R system realizes information interaction with the remote control center through an Internet exchange network. Through arrangement of an ozone sensor, the disinfection process can be conveniently monitored in real time.

The invention relates to a multilevel relativity bearing type automatic mapping method for an electric power communication network, and belongs to the field of electric power communication networks. According to the multilevel relativity bearing type automatic mapping method, through proceeding from the primary production and operation characteristics of electric power and analyzing from top to bottom step by step, a multilevel relativity bearing type model is emphatically established among primary electric power services, electric power communication services and a communication network. In the model, an electric power network resource on the highest layer of the model comprises electric power transmission lines and electric power distribution lines; a communication channel provided by the electric power communication network is a direct resource for supporting the operation and the production of the electric power lines, and electric power services supported by the electric power communication channel comprise relay protection, stability control, and the like; a communication network system formed by a transmission network, a data network and a switch network provides direct support for the communication channel above the communication network system; and an optical cable network is virtually used for bearing and transmitting the communication channel. The relativity multilevel bearing type automatic mapping method has the advantages that graphics among resources at different levels in the communication network are automatically generated and pushed upwards; and the graphics in the communication network are automatically pushed upwards from a transmission layer to a service layer, and difficulties with the transmission layer and the service layer during graphical management of the communication network are solved.

The embodiment of the invention provides a routing table entry issuing method and device, a message forwarding method and device and network equipment, and relates to the technical field of communication. The routing table entry issuing method is applied to a master control CPU, and comprises the steps: issuing first routing table entries and a first default routing table entry to an interface switching chip configured by network equipment, wherein the first routing table entries are part of routing table entries in a routing table maintained by the master control CPU, and the first default routing table entry is used for indicating that a to-be-forwarded message which does not hit the first routing table entries is uploaded to an exchange network chip in the network equipment; and issuing second routing table entries and a second default routing table entry to the exchange network chip, wherein the second routing table entries are routing table entries except the first routing table entries in the routing table, and the second default routing table entry is used for indicating that the to-be-forwarded message which does not hit the second routing table entries is uploaded to the master control CPU. By applying the scheme provided by the embodiment of the invention, the storage space, occupied by the routing table entries, of the interface switching chip can be reduced.