237 results about "Broadcast transmission" patented technology

Systems and methods are described for transmitting broadcasts by Peripherals, receiving the broadcasts by Centrals, and communicating with a Backend by Centrals. Specifically, a Peripheral may generate and transmit an encrypted broadcast packet to a Central, the Central may transmit the encrypted observation information to the Backend, which may decrypt the broadcast packet. Additionally, a Central may transmit a request for authorization to connect to a Peripheral to the Backend. If authorized by the Backend, the Central may connect to the Peripheral. Further, a Central may receive a plurality of broadcasts over a period of time. The Central may store information about the broadcasts and, at the conclusion of the period of time, transmit the information about the broadcasts and the last-received broadcast to the Backend.

A method for delivering data to User Equipments (UEs) is implemented in a node of a Radio Access Network (RAN), and includes receiving, from a network node, a packet including data that is to be delivered from a Core Network (CN) to one or more User Equipments (UEs); transmitting the packet to at least some of the one or more UEs via a broadcast transmission when the packet is received via a common downlink tunnel or via a first DL tunnel of a plurality of DL tunnels; and transmitting the packet to a particular UE of the one or more UEs via a unicast transmission when the packet is not received via the common downlink tunnel or is received via a second DL tunnel of the plurality of DL tunnels.

A grid type seabed direct current power supply system fault section positioning method comprises the steps that whether a system breaks down or not is detected, and if the system breaks down, fault section judgment is carried out; each branch unit / shore-based station sends the detected current data to the adjacent branch unit / shore-based station in a message format, and receives a message; if the current branch unit / shore-based station successfully receives the message at the # imgabs0 # moment, the current cosine similarity is used as a fault section positioning criterion; if the branch unit / shore-based station does not receive the message successfully at the # imgabs1 # moment, line communication is abnormal, and message broadcast transmission is carried out; each branch unit / shore-based station generates a power-communication condition summary table according to the broadcast transmission message; and carrying out fault section positioning according to the electric power-communication condition summary sheet. When the communication is abnormal, the current topological information of the network is obtained by using the full-network communication data generated by the redundant communication link of the system, and the influence of the communication abnormality on the positioning of the fault section of the system is eliminated.

Described herein are systems and methods for resource block determination for multicast and broadcast transmissions. According to various embodiments, a unicast physical downlink shared channel (U-PDSCH) transmission and a group common physical downlink shared channel (GC-PDSCH) transmission are received; a resource block (RB) configuration for decoding the U-PDSCH transmission and GC-PDSCH transmission is determined, wherein the RB configuration specifies a mapping of at least one of the U-PDSCH and the GC-PDSCH to one or more RB collections; and the GC-PDSCH within a Common Frequency Resource (CFR) in decoded according to the RB configuration. According to various embodiments, the determined RB configuration includes a specification of size and location for the one or more RB collections which at least one of the U-PDSCH and the GC-PDSCH is mapped to. In various embodiments, RB collection size and location may be determined relative to CRB indexes and / or a CFR.

The invention relates to a file broadcast transmission method and electronic equipment. The method is applied to a host, and comprises the following steps: S1, generating a data block corresponding to a target file, and sending the data block to a plurality of slaves, so that the slaves generate response signals according to the data block; s2, in the transmission process of the data block, acquiring response information of all the slaves so as to acquire response conditions of the slaves according to the response information of the slaves; s3, reducing the transmission speed of the data block and retransmitting the data block when the response of the slave fails, and executing the step S2; and S4, when all the slaves respond successfully, increasing the transmission speed of the data block, transmitting a new data block, and executing the step S2. According to the invention, the data transmission rate can be improved as much as possible while accurate data transmission is ensured.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information indicating that network coding is enabled for initial transmissions associated with a multicast / broadcast service (MBS) and indicating that network coding is enabled for retransmissions associated with the MBS. The UE may receive, via a multicast traffic channel or a dedicated traffic channel, an initial transmission associated with the MBS, wherein the initial transmission is associated with a first set of encoded packets. The UE may transmit a radio link control (RLC) status feedback message associated with the initial transmission. The UE may receive, via the multicast traffic channel or the dedicated traffic channel, a retransmission associated with the initial transmission, wherein the retransmission is associated with a second set of encoded packets. Numerous other aspects are described.

The invention provides a special digital interphone with recording and broadcasting functions for a railway, which is characterized in that an emergency recording key is pressed down, a master control MCU controls an audio channel management module to communicate a microphone to a recording module and starts the recording module to record, a playback key is pressed down, the master control MCU controls the audio channel management module to communicate the recording module to an audio power amplifier, and the audio power amplifier is started to play the sound. The main control MCU is used for controlling the recording module to output recorded audio to the loudspeaker for playing through the audio power amplifier, and controlling the audio channel management module to communicate the recording module to the radio frequency transceiving and modulation-demodulation module by pressing the emergency broadcast key; and controlling the recording module to output the recorded audio to the radio frequency transceiving and modulation-demodulation module for modulation, and starting radio frequency periodic automatic emission, so as to realize emergency broadcast emission. According to the invention, the limitation that a traditional interphone depends on manual real-time broadcasting is solved, the dangerous case response speed is obviously improved, and the reliability of emergency communication is improved.

The invention relates to a broadcast emission signal optimization method based on multi-antenna cooperation, and the method comprises the steps: constructing a multi-antenna cooperation broadcast emission system which comprises a central control unit, a distributed antenna array, an environment perception module and a terminal feedback module; real-time channel state information (CSI) is collected through the environment sensing module, and a dynamic propagation environment map is constructed; and optimizing a radiation pattern of the antenna array by adopting a three-dimensional beam forming algorithm based on the propagation environment map. According to the multi-antenna cooperative broadcast emission signal optimization method, a cooperative architecture of the central control unit, the distributed antenna array, the environment sensing module and the terminal feedback module is adopted, dynamic beam forming and power optimization are achieved, the coverage uniformity of broadcast signals is remarkably improved, and blind areas and overlapped interference areas are reduced; the energy utilization efficiency is improved, the energy waste caused by ineffective radiation is reduced, the self-adaptive capability of the system is enhanced, and the channel environment change can be responded in real time.

There is provided techniques for selecting agent entities to broadcast local model parameter vectors in an iterative learning process. A method is performed by a coordinator entity. The method, for each iteration of the iterative learning process, comprises obtaining parameters from agent entities. The parameters pertain to a utility for each of the agent entities to broadcast its local model parameter vector for the iteration. The method, for each iteration of the iterative learning process, comprises selecting K<N agent entities to broadcast their local model parameter vector for the iteration by applying a selection criterion to the obtained parameters. The method, for each iteration of the iterative learning process, comprises sending information that informs the N agent entities of the selected K agent entities.

Techniques for suppressing the flooding of link-local multicast and broadcast traffic are provided. In certain embodiments, these techniques include receiving, by a network device, a link-local multicast or broadcast message from an endpoint, where the message pertains to a networking protocol that uses link-local multicast and / or broadcast transmissions; dropping, by a data plane of the network device, the message in hardware, such that the message is not flooded on the local network segment of the endpoint; copying, by the data plane, the message to the device's central processing unit (CPU); and processing, by software running on the CPU, the message in accordance with the message's networking protocol (and in a manner that eliminates the need to flood the message).

The invention discloses a data transmission method based on neighbor domain broadcast. The method comprises the following steps: acquiring network topology structure information and routing table information; acquiring source node information, to-be-sent data and destination node information; performing neighborhood analysis processing on the source node information and the network topology structure information to obtain a source node neighborhood node set; and according to the network topology structure information, the routing table information and the source node neighborhood node set, performing neighborhood broadcast transmission processing on the source node information, the to-be-sent data and the destination node information to complete the data transmission process of the to-be-sent data. According to the method, neighbor domain broadcast and unicast are combined, transmission of network data is completed, the adaptability of the mobile ad hoc network to node movement is improved, and the method can be used for solving the problem of supporting node mobility by centerless wireless networks such as a wireless mobile ad hoc network and a sensor network.

The invention relates to a DDS and TSN automatic integration configuration architecture and method, the architecture comprises an application layer, a control layer and a data layer, the application layer comprises a DDS publisher and a DDS subscriber, the control layer comprises a DS server and a TSN controller, and the data layer comprises a TSN switch deployed in an end system and a network by the DDS application; the TSN controller establishes a connection with the DDS server, so that the DDS server sends the collected information to the TSN controller through the connection to request the reserved time slot of the network resource; the TSN controller outputs an L2 forwarding table, a gating list and a publishing moment which meet multicast transmission through a routing scheduling algorithm; and the L2 forwarding table and the gating list are issued to the TSN switch for configuration, the issuing moment is replied to the DDS server as the response of the request, and the DDS server dynamically configures the moment when the issuer starts to send data. Compared with the prior art, the real-time transmission of the DDS key task flow is ensured while the integration complexity of the DDS key task flow and the DDS key task flow is effectively reduced.

The invention relates to the technical field of digital audio transmission, in particular to a self-adaptive error correction method and system in broadcast digital audio transmission, and the method comprises the steps: obtaining audio data in a broadcast digital audio transmission network; obtaining an error rate in the audio data transmission process; selecting a matched error correction mode based on the error rate; performing error correction processing on the audio data according to the error correction mode; audio data subjected to error correction processing are sent through a broadcast transmission channel, firstly, through real-time error rate monitoring and self-adaptive error correction mode selection, the method can quickly respond to changes of channel conditions, the most suitable error correction strategy is selected under different error rate levels, and the anti-interference capacity and adaptability of a system are greatly improved. This is particularly effective in mobile reception and complex urban environments, which can significantly reduce audio quality degradation and transmission disruption.

A wireless communication device (1) for transmitting data on the basis of a routing table is provided with a transmission processing unit (31) that determines which of unicast transmission and broadcast transmission is to be executed on the basis of the presence or absence of the routing table and the registration status of the destination of data to be transmitted on the routing table, and transmits the data to be transmitted by a transmission method corresponding to a determination result.

To provide an image transmission device in which editing of higher convenience than the prior arts is made possible when a user edits transmission destinations with respect to a broadcasting transmission job.SOLUTION: An image transmission device comprises: an image data acquisition section which acquires image data by reading a transmission document; an operation section which inputs a transmission destination of the image data; an image data transmission section which transmits the image data to the transmission destination; and a control section which controls the image data acquisition section, the operation section and the image data transmission section. When a plurality of transmission destinations is inputted for a broadcasting transmission and the operation section receives an editing start operation of the transmission destinations while the image data transmission section performs the broadcasting transmission of image data to the plurality of transmission destinations, the control section causes the operation section to accept the editing of the transmission destination and causes the image data transmission section to temporarily interrupt the broadcasting transmission in predetermined timing, on the other hand, when the operation section receives an editing end operation of the transmission destinations, the control section causes the image data transmission section to resume the broadcasting transmission to the transmission destinations reflected with the editing.SELECTED DRAWING: Figure 3

Methods, systems, and devices for wireless communication are described. The method may include receiving, from a base station, a broadcast transmission including a reference signal configuration for communication between the base station and the UE while the UE is operating in a first mode, the reference signal configuration indicating one or more reference signal parameters, and the first mode being an idle mode or an inactive mode; receiving one or more reference signals from the base station according to a reference signal configuration when operating in the first mode; and determining one or more channel measurements based on the one or more reference signals received from the base station.

A system is provided for programming one or more of a plurality of appliances of the same type. The appliances are commercial laundry appliances. The system includes a communication device and the plurality of appliances communicatively coupled with the communication device through a wireless connection. The communication device can be configured to acquire appliance information from the appliances. Based on the acquired information, the communication device determines whether one or more of the appliances requires a program update. The communication device of the system receives and stores into a memory the program update, then transmits the program update to the appliances. The communication device uses a broadcast transmission protocol, user datagram protocol (UDP), for programming the respective appliances requiring a program update. A method for programming simultaneously a plurality of commercial laundry appliances includes using the same system.

The application provides an emergency broadcast message transmission system and method, comprising: an emergency broadcast platform, a transmission coverage network and an emergency broadcast access device; the emergency broadcast access device comprises an embedded multi-channel message access card and a fire message access card, the fire message access card comprises a fire broadcast controller; the emergency broadcast platform acquires an emergency broadcast message, compiles the emergency broadcast message to generate an emergency broadcast transmission instruction, and sends the emergency broadcast transmission instruction to the transmission coverage network; the transmission coverage network sends the emergency broadcast transmission instruction to the emergency broadcast access device through a corresponding channel; the embedded multi-channel message access card performs unsealing, signature verification and analysis processing on the emergency broadcast transmission instruction to obtain the emergency broadcast message; the fire message access card performs protocol adaptation and re-encapsulation processing on the emergency broadcast message to obtain a re-encapsulated emergency broadcast message; and the fire broadcast controller distributes and broadcasts the re-encapsulated emergency broadcast message in a fire broadcast system.

To provide an overlapping contact analysis method that can simply and reliably analyze the overlapping contact of broadcast content and a web service with each other.SOLUTION: An overlapping contact analysis method is a method for, when broadcast content transmission transmitting broadcast content through broadcasting and a web service compared with the broadcast content via a network are provided, analyzing the overlapping contact of the broadcast content and the web service with each other, and the method includes a digital ID attribute table generation step (STEP 10), a television digital attribute-enabled table generation step (STEP 20), a television ID attribute generation step (STEP 30), and a cross device matching table generation step (STEP 40).SELECTED DRAWING: Figure 1

The present invention provides a broadcast sending method, a sending system and a computer-readable storage medium, which belong to the field of communication technology. The method described in the embodiment of the present application is to register the registration information of the application to the broadcast manager, add it to the maintenance list, and report it to the system and other applications; the system specifies the broadcast types and processing priorities that the application can receive and process; the application receives and processes the broadcast information according to the preset broadcast types and / or processing priorities received and processed in the maintenance list of the system; thus, the broadcast sending method described in the embodiment of the present application can select the application to send and process the broadcast information in a targeted manner, has a strong purpose, can greatly reduce unnecessary broadcast information sending and processing procedures, and avoid the redundancy of the process of non-targeted and extensive sending or receiving of broadcast information, thereby greatly improving the stability of system information transmission and effectively preventing the loss of system resources.

The embodiment of the invention discloses a mobile terminal and a communication method thereof, a communication network architecture and a communication system, and the mobile terminal obtains an initial message packet, and carries out data transmission channel decision according to the transmission demand of the initial message packet. And packaging the initial message packet into a general protocol data packet and / or a broadcast data packet according to a decision result, and sending the general protocol data packet and / or the broadcast data packet by adopting a corresponding data transmission channel. Therefore, according to the embodiment of the invention, the communication protocol architecture of the mobile terminal supports the general protocol transmission channel and the broadcast transmission channel, so that the data transmission delay can be reduced by adopting the broadcast transmission channel or dual-channel transmission data; when the requirement for transmission reliability is high, double-channel data transmission can be adopted to ensure the reliability and stability of data transmission.

A machine automation system for controlling and operating an automated machine. The system comprises a controller and a sensor bus comprising a central processing core and a multimedia transport intranet for enabling dynamic bursting for a broadcast transmission scheme. Wherein messages are burst from the nodes to the central processing core and broadcast from the central processing core to all nodes.

The invention provides a distributed multi-channel multi-source random broadcast transmission scheduling method and system, and belongs to the field of wireless communication. The method comprises the following steps: initializing a node state, setting a source node as an active node, and setting other nodes as inactive nodes; for active nodes, channel selection of each node is kept unchanged in each round containing continuous time slots by adopting a round-based channel selection strategy; constructing a mapping relation between channels by using a pseudo-random channel mapping mechanism, and determining a final participating channel; when the inactive node receives a packet, the inactive node switches to an active state; the active node sends the first packet with the initial sending probability, and adjusts the sending probability according to a packet sending probability dynamic adjustment strategy; and when the number of packets sent by the nodes at high probability reaches the number initially stored by the source nodes, the packets initially stored by the source nodes are propagated to all the nodes of the whole network. The method can get rid of dependence on node degree information, and effectively resist frequency sweeping, blocking and other interferences.

The utility model discloses a broadcast transmission controller, which comprises: a main controller, a main identification module, a substitute identification module, a switch detection module and a switch control module; the main identification code output end of the main identification module is connected to the main identification code input end of the main controller, the enable output end of the main identification module is connected to the enable input end of the main controller, the output end of the switch detection module is connected to the first state input end of the main controller, the substitute identification code output end of the main controller is connected to the substitute identification code input end of the substitute identification module, and the control output end of the main controller is connected to the input end of the switch control module; the broadcast transmission controller of the utility model is helpful to realize a highly intelligent and highly automated backup transmission system through the connection and coordination among the main controller, the main identification module, the substitute identification module, the switch detection module and the switch control module, reduces the work intensity and improves the efficiency of the substitute broadcast failure frequency.

The invention belongs to the technical field of data transmission, and particularly relates to a debugging system and a terminal equipment debugging method based on a local area network. The debugging system comprises a client used for initiating broadcasts and instructions; the terminal equipment is used for receiving the broadcast and the instruction and establishing communication connection with the client to execute the instruction; wherein the broadcast is sent between the client and the terminal equipment through UDP (User Datagram Protocol) communication connection, and the instruction is sent through TCP (Transmission Control Protocol) communication connection. According to the invention, the client, the server and the terminal equipment are in broadcast transmission through the UDP communication connection so as to search for the specified equipment, operation can be directly carried out through a local area network, the operation is very convenient and rapid, and the problem that debugging is inconvenient due to the fact that an existing debugging means is influenced by factors such as installation space and environment of the equipment is solved.

A reception method for receiving a broadcast signal is disclosed. The reception method according to embodiments may comprise the steps of: receiving a broadcast signal; physical layer processing the broadcast signal to obtain link layer packets; link layer processing the link layer packets to obtain UDP / IP packets; UDP / IP layer processing the UDP / IP packets to obtain first data packets based on a first delivery protocol or second data packets based on a second delivery protocol; and processing the first data packets or the second data packets to obtain service data for a first service or service data for a second service.

A vehicle includes a radio receiver configured to receive emergency alerts initiated by an alert authority and disseminated by an alert disseminator. The radio receiver is normally inactive when the vehicle is at rest. A user monitoring device is configured to track a user while the vehicle is at rest to detect whether the user remains in the vehicle or within a predetermined distance. A controller coupled to the radio receiver and the user monitoring device is configured to activate the radio receiver during the vehicle's rest period if the user is present.The control system detects the presence of a relevant emergency warning message and initiates a warning signal, generated by the vehicle and perceptible to the user, to inform the user that the relevant emergency warning message is available.

Various embodiments enable broadcast communication security. Various embodiments enable authentication of broadcast communications. Various embodiments can enable asymmetric authentication and integrity protection of small size messages such as one or more signed messages with a total length of 250 bytes or less. Various embodiments can support encryption signature of beacon type messages using certificates. Various embodiments can include generating a beacon type message, encrypting signing the beacon type message using at least in part a certificate to generate a signed beacon message, and issuing the signed beacon type message in one or more broadcast transmissions in combination with or independent of certificate information used to verify the signed beacon message.

The present application relates to the field of wireless technology, and in particular to a method, system and device for wireless audio bidirectional transmission from single point to multipoint. The method for wireless audio bidirectional transmission from single point to multipoint includes the master and slave devices controlling the access timing of the slave device based on the isochronous communication time slot structure through random access window period and control time slot, and configuring link resources for the slave device, completing the broadcast transmission of the master device data packet in the point-to-multipoint audio broadcast time slot, and completing the independent transmission of the slave device data packet in the multipoint-to-point audio transmission time slot, realizing efficient management and allocation of link resources, thereby comprehensively solving the problems of low efficiency of single-point to multipoint wireless audio bidirectional transmission links in the prior art.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products related to multi-radio spectrum sharing (MRSS) cell access are described. One method may include receiving, in a cell access broadcast channel, a cell access broadcast transmission associated with a first radio access technology, determining that cell access information associated with the first radio access technology is received in the cell access broadcast transmission, determining that cell access information associated with a second radio access technology is received in the cell access broadcast channel, determining the cell access information associated with the second radio access technology based on reserved bits in the cell access broadcast channel and the cell access information associated with the first radio access technology, and receiving cell system information associated with the second radio access technology using the determined cell access information associated with the second radio access technology.