331 results about "Broadcast radiation" patented technology

A method for data broadcast over a network includes receiving at a virtual bridge a data packet to be flooded over the network, and passing the data packet from the virtual bridge to a multicast-capable router, along with a broadcast indication. Responsive to the broadcast indication, the router determines a group of destination addresses to which the packet should be multicast, and creates copies of the packet for transmission over the network to the destination addresses in the group.

Method for processing content of an Internet Protocol (IP) packet and method for processing a full broadcast IP packet. Processing content of an IP packet includes: extracting IP source and destination addresses and payload from the IP packet; and generating an IP frame encapsulating the IP source and destination addresses and the payload between a preamble field and an error checking field. Processing a full broadcast IP packet includes: receiving the full broadcast IP packet including an IP source address and a full broadcast IP destination address; ascertaining a closest matching IP address and a subnet thereof in a switching table of an IP switch; replacing the full broadcast IP destination address in the IP packet with a subnetted source address generated by applying the subnet mask to the IP source address; transmitting the IP packet to all IP addresses in the switching table within the subnetted source address.

A broadcast management system creates, manages, and streams a broadcast of an event from videos captured from multiple cameras. A video capture system comprising multiple cameras captures videos of the event and transmits the videos to a broadcast management server. The broadcast management server generates a website or other graphical interface that simultaneously displays the captured videos in a time-synchronized manner. A broadcast manager user creates a broadcast by selecting which video to output to the broadcast at any given time. A broadcast map is stored for each broadcast that includes all of the broadcast decisions made by the broadcast manager user such that the broadcast can be recreated at a later time by applying the broadcast map to the raw videos. Using a viewer client, viewers can browse or search for broadcasts and select a broadcast for viewing.

A radio device that is capable of positioning itself within a broadcast radio system includes a receiver operable to receive a plurality of broadcast radio signals, each broadcast from a respective one of a plurality of broadcast radio signal sources. The radio device further includes processing circuitry operable to determine respective call station identification information for each of the broadcast radio signal sources from the broadcast radio signals, measure respective signal quality characteristics for each of the received broadcast radio signals, identify station position data associated with each of the broadcast radio signal sources from the respective call station identification information, and calculate a location of the radio device using the signal quality characteristics and station position data associated with at least three broadcast radio signal sources.

Broadcast storm due to topology loop may result from end-user mis-configurations, faulty ports, cabling problems, faulty spanning-tree algorithm implementations, and others. This loop detection mechanism helps detecting topology loops and eliminates them. It operates as a watchdog independent of the spanning-tree algorithm. The feature is aiming at enhancing the values of SO-LOS.

Exemplary embodiments include an antenna for receiving electromagnetic radiation in a broadcast radiation band and a near-field radiation band to generate a Radio Frequency (RF) signal. A coupling element couples the RF signal to a first port and at least one additional port, which may be a second port and a third port. A wireless power receiver on the first port includes a rectifier for converting the RF signal to a DC signal when the antenna couples to radiation in the near-field radiation band in a coupling-mode region of the antenna. A near-field communication transceiver includes circuitry for communicating information on the antenna in the near-field radiation band when the coupling element couples the second port to the RF signal. A broadcast receiver on the third port includes circuitry for receiving and tuning the broadcast radiation band when the coupling element couples the third port to the RF signal.

When a traffic storm has occurred in an open flow network, a frame of a cause is dropped in a flow unit without carrying out the indiscriminate drop of the frame and the down of the port. Specifically, a controller detects increase of the traffic in a short time from the statistic data regularly acquired from each of the switches under the control of it. The controller starts a storm detection mode upon the detection. In the storm detection mode, packets are extracted randomly from the switch for a predetermined time period, as a sample packet. The controller determines which of a broadcast storm, a multicast storm and a unicast storms has occurred, based on the sample packets. The controller determines that the traffic storm has occurred, when any of them has occurred.

The invention discloses a micropower wireless network ad-hoc networking method based on multi-channel frequency hopping. A coordinator node is used for starting building of a whole sub network, an in-network routing node is controlled to conduct hop-by-hop grouping in a specified period to start broadcast networking of out-network routing nodes in the first hop range, manage complete routes from itself to the routing nodes in the region of the in-network routing node and conduct link maintenance and transparent transmission of application messages. The routing nodes are used for conducting multi-channel passive scanning receiving, automatically select an optimized route by capturing the whole route from a coordinator to the neighborhood nodes in the first hop range and actively report the whole captured route to the coordinator in a communication link active period. The whole networking process is quick, simple, free of manual participation and the like. Meanwhile, the coordinator controls the communication link active period, effectively prevents broadcast storm, prevents the out-network routing nodes from actively starting access applications periodically in full band and can share spectrum resources with other devices in a day parting mode. System expandability and scalability are good.

In response to a track playing on a broadcast radio station, the corresponding artist name is used as a key to access a database of artist messages, news and events information associated with that artist, that may be automatically distributed and geo-targeted while the track is playing. Distribution of the supplemental artist-related content extends to the radio broadcast—via RDS and HD, to the Internet, social media and various mobile devices. The supplement content may comprise messages pre-programmed by the artist, agents, or music labels. The supplemental content may be geo-targeted to include local tour dates, media appearances, related news, album releases and other data tied to the artist's song that is playing on the radio or on a streaming application. Further, the system may feed messages directly from the artist's existing social platforms, to provide further engagement of listeners while the track is playing.

A method and apparatus for receiving dispatch messages in a broadcast radio receiver. In one embodiment, audio dispatch messages can be received, in another embodiment, data dispatch messages can be received. In either embodiment, a previously selected broadcast channel is received until a dispatch alert message is simultaneously received. The dispatch alert message includes a dispatch ID codes which is compared by the receiver with a previously stored dispatch ID code. If equality is found, the receiver switches from the previously selected broadcast channel to a dispatch broadcast channel to receive the dispatch message. Upon completion of the dispatch message, the receiver automatically switches back to the previously selected broadcast channel.

The invention discloses an Ethernet communication method and system and an SDN exchanger. The method comprises the steps that the SDN exchanger reports the MAC address learned locally to an integrated controller, and the integrated controller issues forwarding tables of forwarding ports corresponding to target MAC addresses to all SDN exchangers under a management domain based on whole network topology automatic finding and route computing based on strategies; and the SDN exchangers achieve Ethernet frame forwarding according to the MAC address forwarding tables learned locally and the MAC address forwarding tables issued by the integrated controller. The integrated controller issues the MAC address forwarding tables to the SCN exchangers in the management domain, the boundedness that a traditional Ethernet exchanger learns whole network MAC addresses through a data forwarding plane is avoided, and the problems that broadcast storm and spanning tree protocols exist in the traditional Ethernet, so that a large amount of redundancy chain blocking is caused, network convergence speed is slow, and traffic engineering cannot be achieved are solved.

The present invention discloses a Ethernet switch stacking system management method, which comprises that stacking members are initialized for the stacking system waiting for joining in, the owner information of the stacking member is empty, the main device is confirmed, and a device configuration table is arranged; the stacking member waiting for joining in the stacking system sends out the joining in request message to the outside for joining in the stacking system; the stacking member receives the message judges whether allowing the stacking system waiting for joining in the stacking system to join in the stacking system or not, if the joining in is allowed, a joining allowance message is sent; and the stacking member receives the message judges whether allowing the stacking system of which the state is waiting for joining in the stacking system to join in the stacking system or not, if the joining in is allowed, the state is moved to be the state of being joined in the stacking system. The present invention ensures that the stacking members join in the stacking system gradually, thus the initiation and the forwarding number of the topology management message between the stacking members are reduced, the CPU and bandwidth resource are saved, and the message loop and the broadcasting storm are effectively prevented.

The invention discloses a multi-link transparent interconnection multicast frame transmission method and system, which recognizes the topology of the TRILL network through the link state protocol and generates a distribution tree; according to the received multicast listening protocol message and the route of the RB The forwarding table information generates a multicast TRILL forwarding table; when the RB receives a VLAN broadcast frame or multicast frame, the RB encapsulates the data frame as a TRILL data frame and sends it to the TRILL network; when a fault is detected, the channel status is changed to allow the TRILL data Packet smooth switching and forwarding. Adopting the technical solution of the present invention effectively guarantees the transmission of multicast messages in the TRILL network, fully utilizes the bandwidth and effectively prevents broadcast storms, well supports the rapidly increasing horizontal traffic between servers, and ensures the smooth expansion of the two-layer network , effective hierarchical MAC address, providing guarantee for virtualized data center business expansion.

The invention provides a method for sending testing data frame in port line-speed by using the Ethernet switch, which comprises the steps that: establishing a virtual local area network (LAN) which contains one first class port and a plurality of second class ports, wherein, the virtual local area network tag of the virtual local area network is corresponding to the mark of the first class port in the virtual local area network; sending test data frame with the virtual local area network tag of the virtual local area network to one of second class ports; broadcasting and testing data frame by the second class ports which has received the test data frame in virtual local area network which is corresponding to the virtual local area network tag to form broadcast storm among a plurality of the second ports; retransmitting the received test data frame brought by broadcast storm to the equipment to be tested by the first class port. By adopting the technical proposal, the invention can send test data frame in the equipment port line-speed without network processor and FPGA, thereby, reducing the cost of research, development and production.

The invention discloses a route diffusion method for dynamically generating expansion tree in the network, specifically suitable for the scene of broadcast routing in an Ad hoc network or a Wireless Mesh Network. The invention adopts a method of combining broadcast table, neighbor table and sequence numbers on network nodes, to establish, update and delete the neighborhood relation among network nodes by timely transmitting call packets; and then transmits and forwards broadcast packets according to the setting criterion based on the real-time updated neighborhood. The packet transmission includes: after receiving the broadcast packet transmitting indication from the upper layer, the nodes stuffing packets, adding one to the present network node sequence number, and adding the node address, the node sequence number and neighbor node information in the packet heading, and then transmitting packets; and the packet forwarding includes: nodes receives the broadcast packet from network, looks for the generating nodes of the packets in the broadcast table, compares the sequence number in the packet and the size of the corresponding sequence number in the broadcast table to determine whether the packet is a redundant broadcast report, and then continues the packet forwarding. The route diffusion method for dynamically generating expansion tree in the network adopted by the invention can realize the effective spreading of the broadcast packet, and effectively inhibit the generation of broadcast storm and routing self-loop; the method has relative simple and practical protocol, application in micro scale networking, and fast network convergence rate.

The invention provides an opportunistic routing algorithm of an Ad hoc network based on node priority levels. In the algorithm, an intermediate node transferring list from a source node to a destination node is established by a routing request message and a routing response message; the nodes in the transferring list undergo priority level setting according to the distances away from the destination node which are indicated in the response message; the shorter the distance is, the higher the priority level is; the transferring list is carried at the head part of each data packet; all intermediate nodes in the transferring list have the opportunity to transfer the received data packets; broadcast storm is avoided by setting serial numbers for the data packets; repeated transference of a certain number of data packets can be avoided by comparing the priority levels; and the success rate of information transmission is improved by a transferring node of more than one next hop node. An opportunistic routing mechanism can perform transference by fully utilizing the transferring node which is closer to the destination node in a scene with poorer channel quality, and can ensure higher mailing rate and shorter terminal-to-terminal time delay.

The invention discloses a detection method of broadcast storm, comprising the following steps: carrying out classification statistics on multicast messages; detecting the broadcast storm based on whether the number of each monitored multicast message exceeds a threshold value within unit time, and meanwhile detecting relevant information such as broadcast storm messages, duration time and strength and the like of the broadcast storm to facilitate working personnel to understand the broadcast storm; and classifying the multicast messages by adopting a cyclic redundancy check algorithm to improve classification efficiency and optimize classification effect. The invention further discloses a detection device of the broadcast storm, which comprises a monitoring module, a classifying module and a judging module, wherein, the classifying module classifies the multicast messages monitored by the monitoring module and then sends the multicast messages to the judging module; and the judging module detects the broadcast storm based on whether the number of each monitored multicast message exceeds a threshold value within unit time. In the invention, the detection method is matched with the detection device to complete detection of the broadcast storm.

The invention discloses a network storm inhibition method in a process layer of an intelligent transformer station. The method is characterized by comprising steps that: 1), MAC address filtering is carried out; 2), mass-flow broadcast message inhibition is carried out; 3), DMA0 and DMA1 having different priorities are used according to an SV message and a GOOSE message, and different strategies are employed for the DMA0 and the DMA1 to realize move of network data from an MAC cache region into a processor; 4), according to a third part message, move from the MAC cache region to an external memory is carried out by utilizing the DMA; and 5), according to a GOOSE storm, an in-band fixed storm and a change storm, types and characteristics of the storms can be automatically identified, and specific storm inhibition is carried out to reduce network pressure of a network port without influence exerted on normal message processing. According to the method, the broadcast storm, the out-band multicast storm and the in-band multicast storm are effectively inhibited, and correct and reliable operation of the device are guaranteed.

The present invention discloses an Ethernet network fault recovery method. The present invention comprises that when the elimination of the ring network fault is detected, a master node forwards out a unicast data packet of which the access is from a port, and the other nodes recover the packet forwarding; according to the forwarding path of the data packet after a sub part is blocked, the forwarding table information of the node is synchronized; and sub part is blocked by the master node. The present invention realizes the uninterrupted forwarding of the unicast data packet in the process of recovering the ring network fault, and avoids the possible broadcasting turmoil; meanwhile, the synchronization mechanism of a forwarding table avoids the flow oscillation caused by the ring network because of the refreshing and forwarding of all the nodes, thereby the fault recovery process is smoother.

The invention discloses a wind-field communication network with double-loop redundancy, which includes a communication and monitoring station of the fan controller, wherein the wind-field looped network is comprised among the fans. The wind-field looped network applies the optical fiber looped network of the topological structure with the double-loop self-healing policy, which comprises the following parts: a fiber channel data code, a communication protocol, an MCU hardware module, an Ethernet hardware module, a fiber interface module, a CAN module, the other communication interface module and a power module, wherein the monitoring station remotely accesses the operation state of every fan directly by the Ethernet hardware module, the communication controller of every fan is connected with the fiber network of the wind field by the fiber interface module and communicates with the other fans and the master communication controller, CAN module communicates with the other controller of the fan provided double CAN by the interior of MCU hardware module, MCU hardware module sends the data and the order to the wind-field looped network by the fiber interface module according to the corresponding communication protocol or the other controller in the fan by CAN module after calculating and judging the received communication data and the data of the sensor. The topology network structure of the invention is provided with the short cable, which is fit for fiber and error transmission; the fiber network transmission media of the invention is provided with the high transmission efficient, the long distance, the strong electromagnetic anti-interference ability; the double-loop network structure of the invention achieves the self-healing function of the network; the DNP 3.0 regulation in the total wind-field communication dissolves the broadcast storm problem.

The system provides an Internet-based site accessible by customers and broadcasters for tracking the airing of their advertisements. The system includes a software package for creating a database of all events occurring on a broadcast station, which may comprise, for example, a radio or television station, although these are not intended as limitations. The software package receives a recording of a station's output, which contains metadata on each broadcast element that includes time, date, and content information. As the broadcast proceeds, the start and stop time of each element are stored in a table in the database. This database can then be subsequently queried via the website by a customer or media personnel to ascertain that the spot has aired as intended.

The invention discloses a address refreshing method for Ethernet ring comprising: configuring two-stage forwarding table for ring node of Ethernet ring; when topology changes of Ethernet ring, judging if the ring node is connected with topology changing point; if ring node is connected with topology changing point, the ring node deleting all address forwarding item of self two-stage forwarding table and creating message carrying address refreshing information to self node of adjacent ring; if ring node is not connected with topology changing point, the ring node receiving message carrying address refreshing information and from its adjacent node, then deleting all address forwarding items of two-stage forwarding table in self two-stage forwarding table; and forwarding the received message to self node positioned at adjacent ring. The invention also discloses an address refreshing device. The inventive method and device can largely relieve harm of broadcasting storm of Ethernet ring.

The invention discloses a method and a device for realizing single-node dual home for a distributed system, comprising the following steps: a first single plate on which a port of a member link of a primary aggregation link is located and a second single plate on which a port of a member link of a standby aggregation link is located are selected, and the ports of the member links of the primary aggregation link and the standby aggregation link are distributed on different single plates; the first single plate detects the status of the primary aggregation link, and the second single plate detects the status of the standby aggregation link; and the primary aggregation link and the standby aggregation link are switched according to the detected status of the primary aggregation link and the detected status of the standby aggregation link. The invention improves the anti-failure ability of Ethernet dual-homing connection network, whole network failure can not occur when partial single plates are in failure, thereby avoiding data replication, broadcast storms and the like of the Ethernet dual-homing connection network.

The present invention relates generally to interfacing a processor with at least one coprocessor. One embodiment relates to a processor having a set of broadcast specifiers which it uses to selectively broadcast an operand that is being written to a register within the processor to a coprocessor communication bus. Each broadcast specifier may therefore include a broadcast indicator corresponding to each general purpose register of the processor. An alternate embodiment may also use the concept of broadcast regions where each broadcast region may have a corresponding broadcast specifier where one broadcast specifier may correspond to multiple broadcast regions. Alternatively, in one embodiment, the processor may use broadcast regions independent of the broadcast specifiers where the coprocessor is able to alter its functionality in response to the current broadcast region. In one embodiment, the processor may provide a region specifier via the coprocessor communication bus to indicate the current broadcast region.

A method and system for communicating information via a plurality of different networks may comprise circuitry in a mobile terminal that receives broadcast information via a VHF / UHF broadcast communication path and simultaneously receives in the mobile terminal, cellular information via a cellular communication path. The system may further comprise circuitry in the mobile terminal that switches between processing of the broadcast information received via the VHF / UHF broadcast communication path and the cellular information received via the cellular communication path based on a measured broadcast signal statistic associated with a signal bearing the broadcast information and a measured cellular signal statistic associated with a signal bearing the cellular information. The broadcast information and the cellular information may be the same information. The broadcast information and the cellular information may comprise video data. The cellular information may comprise voice data.

A data transmission system is disclosed for multicasting user common data from one or more radio base stations to one or more mobile stations. The radio base station is configured to transmit user common data using a shared data channel, transmit associated control information using an associated control channel, and transmit broadcast information using a broadcast channel. The mobile station is configured to receive the shared data channel, the associated control channel and the broadcast channel. The mobile station is further configured to analyze the broadcast information and the associated control information. The broadcast information includes information indicating transmission timing of the associated control channel. The associated control information includes information of a radio parameter of the shared data channel and includes distribution information indicating multicasting time of the user common data.