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213 results about "Time sensitive networking" patented technology
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Time-Sensitive Networking (TSN) is a set of standards under development by the Time-Sensitive Networking task group of the IEEE 802.1 working group. The TSN task group was formed in November 2012 by renaming the existing Audio Video Bridging Task Group and continuing its work. The name changed as a result of extension of the working area of the standardization group. The standards define mechanisms for the time-sensitive transmission of data over deterministic Ethernet networks.
Industrial time-sensitive network data deterministic scheduling method
PendingCN111327540AGuaranteed normal transmissionImprove connectivityData switching networksIndustrial EthernetNetwork data
The invention relates to an industrial time-sensitive network data deterministic scheduling method, which belongs to the technical field of industrial networks and comprises the following steps that:S1: a TSN management network allocates priorities to data frames sent by industrial Ethernet equipment; S2, defining industrial data characteristics according to the data frame characteristic parameters; S3, establishing a data scheduling model at an output port of the industrial TSN switch, wherein the data scheduling model is composed of a data frame distribution module, a buffer queue and a data frame scheduling module; the data frame distribution module divides the buffer queue into eight scheduling queues according to the frame characteristic parameters; S4, distributing the data frames into different scheduling queues; S5, different shaping mechanisms are adopted for all the scheduling queues according to different determinacy and real-time requirements of the data frames; and S6, the data frame scheduling module performs output scheduling on the data frames. According to the method, the determinacy and the real-time performance of industrial CDT type data transmission are ensured, the jitter of SR type data can be effectively reduced, and meanwhile, the transmission of BE type data is allowed.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Method and system for compensated time stamping for time-sensitive network communications
Aspects of a method and system for compensated time stamping for time-sensitive network communications are provided. In this regard, one or more timestamps generated in an OSI layer above the physical layer may be adjusted based on parameters associated with an amount of time in which data traverses a PHY of the network device. Communications of the network device may be managed based on the adjusted one or more timestamps. The parameters may comprise one or more of: average ingress PHY traversal time, average egress PHY traversal time, variance of ingress PHY traversal time, and variance of egress PHY traversal time. One or more network links coupled to the network device may be characterized based on the one or more adjusted timestamps. The parameters may be stored in one or more registers within a PHY of the network device.
Owner:AVAGO TECH INT SALES PTE LTD
Industrial wireless WIA-PA network and time sensitive network conversion method and apparatus
ActiveCN108965171AGuaranteed priorityRealize interconnectionData switching networksData streamField device
The invention relates to an industrial wireless WIA-PA network and time sensitive network conversion method and apparatus, and belongs to the technical field of industrial networks. The apparatus consists of a TSN switch, a WIA-PA / TSN converter, a WIA-PA router and a WIA-PA field device. In the method, the WIA-PA / TSN converter is designed, two manners of MAC address addressing and IPv6 address addressing are supported, the mapping between a WIA-PA data stream and a TSN data stream is completed, the support of a data transmission priority is maintained, and the protocol conversion and interconnection between WIA-PA and TSN are effectively achieved; and furthermore, the invention further provides a transmission delay guarantee method between the WIA-PA and the TSN, the data can arrive withina specified deadline by allocating communication resources such as transmission time slots and the like, so that the instantaneity and certainty of the transmission of the data between the WIA-PA / TSNis ensured.
Owner:INST OF IND INTERNET CHONGQING UNIV OF POSTS & TELECOMM
EPA industrial bus and time sensitive network adaptation system and method
ActiveCN110943899AProtect normal transmissionEfficient use ofTime-division multiplexNetworks interconnectionLow jitterLow delay
The invention relates to an EPA industrial bus and time sensitive network adaptation system and method, solves the technical problem that an EPA Ethernet cannot be connected with a time sensitive network in real time to construct a fast channel, and comprises an EPA endpoint device and a TSN endpoint device. The EPA endpoint device is in communication connection with a TSN bridging device througha TSN adapter, and the TSN bridging device is connected with the TSN endpoint device; the TSN adapter receives the time data issued by the main clock from the TSN bridging device, and adds a timestampin the process of receiving or transmitting the clock synchronization data to complete clock synchronization; and the TSN bridging device is used for providing time synchronization, low delay, low jitter and flow bandwidth guarantee, so that the problem is better solved, and the method can be applied to the EPA industrial technology.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Method for realizing data transmission of time-sensitive network, related equipment and medium
ActiveCN110611924ATimely managementData transmission is timelySynchronisation arrangementNetwork traffic/resource managementSession managementComputer terminal
The embodiment of the invention provides a method for realizing data transmission of a time-sensitive network, related equipment and a medium. One of the methods includes: in a protocol data unit session management process of a user terminal, the session management function equipment reports port management parameters to the centralized network controller; wherein the port management parameters comprise an identifier of the user terminal, a first port list provided by a device side time sensitive network converter connected with the user terminal, and a second port list provided by a network time sensitive network converter connected with a user plane function device; and the session management function device receives port configuration parameters issued by the centralized network controller, wherein the port configuration parameters comprise port resources associated with the protocol data unit session. According to the method, the problems of transmission conflicts, poor port configuration and the like can be effectively solved, and the smooth data transmission process of the time-sensitive network is ensured.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Communication system and method for integrating a data distribution service into a time sensitive network
ActiveUS20180006955A1Data switching networksInformation technology support systemCommunications systemControl system
A system includes a scheduling device of a data distribution service (DDS) that determines bandwidth for communication of time sensitive communications between devices using the DDS in a time sensitive network (TSN). The scheduling device determines available bandwidth for communication of non-time sensitive communications of the control system using the DDS in the TSN, and controls communication of the non-time sensitive communications in the TSN without preventing communication of the time sensitive communications in the TSN based on the available bandwidth. The system also can include a traffic shaper of the TSN that receives a communication change from the control system at the TSN. The scheduling device changes one or more of the bandwidth for the communication of the time sensitive communications or the available bandwidth for the communication of the non-time sensitive communications in the TSN without restarting the TSN.
Owner:GENERAL ELECTRIC CO
Time-sensitive networking differentiation of traffic based upon content
Owner:GENERAL ELECTRIC CO
Time sensitive network (TSN) scheduler with verification
According to some embodiments, system and methods are provided, comprising receiving, at a verification module, a schedule for transmission of one or more data frames to one or more destination nodes via a Time Sensitive Network (TSN); receiving, at the verification module, a destination for each data frame; receiving, at the verification module, a maximum tolerable latency for each data frame; determining, via the verification module, the received schedule is correct; transmitting one or more data frames according to the schedule; accessing, via the verification module, the one or more destination nodes; verifying, via the verification module, the one or more data frames were transmitted to the one or more destination nodes within a maximum tolerable latency, based on accessing the one or more destination nodes; and controlling one or more operations of an installed product based on the transmitted one or more data frames. Numerous other aspects are provided.
Owner:GENERAL ELECTRIC CO
Time division multiplexing method for hybrid flow fusion
ActiveCN110601997AGuaranteed service qualityGuaranteed real-time deliveryTime-division multiplexData switching networksQuality of serviceStatistical time division multiplexing
The invention discloses a time division multiplexing method for hybrid flow fusion, which comprises the following steps of: setting a periodic data sending time slice in a time sensitive network for transmitting periodic data; wherein a pore time slice, namely an aperiodic data sending time slice, is arranged between the adjacent periodic data sending time slices and is used for transmitting aperiodic data; generating a data scheduling scheme in each TDMA period in the periodic data sending time slice and the non-periodic data sending time slice set in the step S1, and recording the data scheduling scheme as a porous scheduling scheme; and sending the periodic data and the non-periodic data by adopting the porous scheduling scheme generated in the step S2 to realize time division multiplexing of the periodic data and the non-periodic data in the time sensitive network. According to the invention, the real-time transmission of the periodic data in the mixed flow of the time sensitive network can be ensured, the periodic data is ensured to have relatively small time delay and jitter, and the service quality of the non-periodic data can also be ensured, so that the periodic data and the non-periodic data can be transmitted in a mixed manner.
Owner:BEIJING MXTRONICS CORP +1
Locomotive control system
InactiveUS20190322298A1Signalling indicators on vehicleStore-and-forward switching systemsQuality of serviceControl system
A locomotive control system includes one or more processors configured to determine quality of service (QoS) parameters of locomotive devices communicating data with each other in an Ethernet network that is configured as a time sensitive network (TSN) and that is onboard a locomotive. The one or more processors also are configured to determine available communication pathways in the TSN through which the locomotive devices are able to communicate the data. The one or more processors also are configured to select one or more of the available communication pathways and to designate communication times at which the data is communicated between the locomotive devices to satisfy the QoS parameters of the locomotive devices.
Owner:GE GLOBAL SOURCING LLC
System and method for establishing reliable time-sensitive networks
InactiveUS20200136894A1Data switching networksError prevention/detection by transmission repeatPathPingCommunications system
A communication system includes one or more processors that determine a communication risk value for each path of multiple paths within a time-sensitive network. The multiple paths are defined by multiple nodes and links that communicatively connect the nodes. The processors establish a redundant path of the paths that bypasses a low reliability path of the paths. The redundant path includes at least one different link or node from the low reliability path. The processors control the time-sensitive network to communicate duplicate copies of a data frame in parallel along both the redundant path and the low reliability path to increase a likelihood that the data frame is received at a listening device from a publishing device within a designated time window according to a schedule of the time-sensitive network.
Owner:GENERAL ELECTRIC CO
Information transmission method and device, computer storage medium and terminal
ActiveCN109787919AReduce transmission delayData switching networksInformation transmissionComputer terminal
The invention relates to an information transmission method and device, a computer storage medium and a terminal, which are applied to a time sensitive network and the method comprise the following steps: respectively marking different types of messages according to the types of the received messages; Caching the marked message; According to the type of the cached message and the real-time state of the egress port door queue corresponding to the message, carrying out transmission processing on the cached message; Wherein the type of the message comprises a time sensitive frame and a non-time sensitive frame. According to the embodiment of the invention, the message is transmitted according to the real-time state of the egress port gate queue, so that the transmission delay of the time sensitive frame is reduced.
Owner:RAISECOM TECH
Traffic scheduling method for EtherCAT and time sensitive network
InactiveCN111385224ARealize reasonable divisionMeet real-time requirementsData switching networksEtherCATTime sensitive
The invention relates to a flow scheduling method for an EtherCAT and a time sensitive network. The flow scheduling method belongs to the technical field of industrial networks, and comprises the steps of: analyzing periodicity and time delay of EtherCAT flow and non-EtherCAT flow in a network, and allocating priorities and TSN flow queues according to characteristics; then, allocating schedulingtime slots to the queues mapped by the EhterCAT flow, and generating a scheduling table; and finally, dividing the non-EtherCAT flow into SR flow, proposing an optimization model by taking the maximumreserved bandwidth in IEEE 802.1 Qat as a constraint condition, solving the optimization model to obtain an optimal idle slope, configuring a reserved bandwidth by utilizing the optimal idle slope, and shortening response time of CBS scheduling, so that reasonable allocation of network resources is realized. Meanwhile, various flow allocation and flow real-time scheduling in the EtherCAT / TSN network can be realized.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Communication system and method for controlling data distribution quality of service in time sensitive networks
ActiveUS20170272366A1Data switching networksInformation technology support systemCommunications systemControl system
A control system (e.g., that controls operations of a powered system) includes one or more processors configured to determine quality of service (QoS) parameters of devices communicating data with each other in an Ethernet network configured as a time sensitive network (TSN). The one or more processors also are configured to determine available communication pathways in the TSN through which the devices are able to communicate the data, and to select one or more of the available communication pathways and to designate communication times at which the data is communicated between the devices in order to satisfy the QoS parameters of the devices.
Owner:GENERAL ELECTRIC CO
Deterministic communication system based on TSN network and OPC UA architecture
PendingCN111970212AImprove interoperabilityReal-time transmissionData switching networksLevel dataTime data
The invention discloses a deterministic communication system based on a TSN network and an OPC UA architecture. The system is characterized in that the system comprises an embedded OPC UA server, a TSN time sensitive network and an OPC UA client, wherein the embedded OPC UA server is used for being connected with equipment, machines and sensors on an industrial site; the TSN time sensitive networkis used as a communication carrier of the whole system; and the OPC UA client is used for reading field-level data, operating equipment and providing data and operation functions for upper-layer applications. According to the invention, the OPC UA embedded server and the TSN network are combined for realization. In this way, a powerful object-oriented information model of OPC UA is compatible todescribe a system with rich semantics, data intercommunication of a complex industrial site is achieved, reliable determinacy is provided in networking through a network of IEEE TSN, and end-to-end real-time data transmission is achieved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Deterministic packet scheduling and DMA for time sensitive networking
PendingUS20210014177A1Networks interconnectionElectric digital data processingDirect memory accessEngineering
In one embodiment, a network interface controller (NIC) includes multiple packet transmission queues to queue data packets for transmission. The data packets are assigned to multiple traffic classes. The NIC also includes multiple input / output (I / O) interfaces for retrieving the data packets from memory. Each I / O interface is assigned to a subset of the traffic classes. The NIC also includes scheduler circuitry to select a first data packet to be retrieved from memory, and direct memory access (DMA) engine circuitry to retrieve the first data packet from memory via one of the I / O interfaces based on the traffic class of the first data packet, and store the first data packet in one of the packet transmission queues. The NIC also includes a transmission interface to transmit the first data packet over a network at a corresponding launch time indicated by the scheduler circuitry.
Owner:INTEL CORP
Multitask unloading method and system in time-sensitive network
ActiveCN112039965ADoes not affect real-time performanceImprove real-time performanceTransmissionEnergy efficient computingOptimal decisionEdge computing
The invention belongs to the technical field of edge computing and time sensitive networks, and provides a multitask unloading method and system in a time sensitive network, and the method comprises the steps: building a task model for a task to be unloaded according to the attribute of the task, and the attribute at least comprises the code quantity of the task, the data quantity input by the task and the code computing density; in the task model, solving the total time consumed by the task under each decision according to an unloading decision basis, and constructing an optimal decision function of each task by taking minimization of the consumed total time as a target; according to a game algorithm, in a multi-task scene, performing finite iterative computation on the optimal decision function of each task, and calculating a decision result that multiple tasks reach Nash equilibrium. According to the technical scheme, insufficient computing resources can be relieved, meanwhile, thereal-time performance of tasks is not affected, and even the real-time performance of task delivery is improved to a certain extent, so that loads between computing nodes are balanced, and the methodhas good practical significance and application value.
Owner:致瓴探(上海)科技有限公司
Vehicle control system
ActiveUS20180084055A1Particular environment based servicesSignalling indicators on vehicleControl communicationsControl system
A control system includes a controller configured to control communication between or among plural vehicle devices that control operation of a vehicle via a network that communicatively couples the vehicle devices. The controller also is configured to control the communication using a data distribution service (DDS) and with the network operating as a time sensitive network (TSN). The controller is configured to direct a first set of the vehicle devices to communicate using time sensitive communications, a different, second set of the vehicle devices to communicate using best effort communications, and a different, third set of the vehicle devices to communicate using rate constrained communications.
Owner:GE GLOBAL SOURCING LLC
Industrial time sensitive network multilevel security data scheduling method
ActiveCN109450943ABalancing Security NeedsBalanced Data Transfer EfficiencyTransmissionData transmissionTime sensitive
The invention relates to an industrial time sensitive network multilevel security data scheduling method, and belongs to the field of communication networks. The method comprises the steps that S1, agateway device is used as a network manager to allocate priorities for data frames sent by field nodes; S2, the industrial wireless network field nodes generate a data frame information table; S3, thenodes perform encryption of different strength grades on the data frames about to be sent, and update the data frame information table; S4, a TSN switching device builds a multilevel security data scheduling model, and comprises a data frame allocation module, a buffer queue module and a data frame scheduling module; the data frame distribution module divides a buffer queue into four grades of encryption waiting queues according to the data frame encryption grades; and S5, the data frame scheduling module performs internal scheduling on the data frames in the encryption waiting queues according to comprehensive priorities. The method meets the requirements of the determinacy of industrial wireless network data transmission and the real-time performance of high-priority data transmission.
Owner:KYLAND TECH CO LTD
High-reliability clock synchronization system and method for time sensitive network
ActiveCN111585683AReduce dependenceImprove fault toleranceTime-division multiplexFault toleranceNetwork clock
The invention discloses a high-reliability clock synchronization system and method for a time sensitive network, and relates to the technical field of communication. The network is divided into two levels according to a clock synchronization function, a master-slave synchronization method is adopted for a top-layer network to achieve time and frequency offset correction, the time and frequency offset is compared with a bottom-layer network clock reference in order that the network reliability is guaranteed; and the bottom-layer network adopts a distributed structure to realize calculation release and frequency release of the time reference. According to the invention, the dependence of the network clock reference on the GM is reduced, and the fault tolerance and reliability are improved; roles of all devices in the network are dynamically distributed so that the agglomeration phenomenon is avoided, and clock synchronization of all network devices is achieved; time and frequency offsetcorrection is considered at the same time, synchronization of a network system clock and UTC in time and frequency is achieved, the problems that in a traditional clock synchronization method, time offset correction precision is not high, and frequency offset correction is slow are effectively solved, namely synchronization precision is improved, and synchronization speed is increased.
Owner:SHANGHAI JIAO TONG UNIV
Joint optimization method for path selection and gating scheduling in time-sensitive network
ActiveCN114172843AImprove transmission performanceGuaranteed normal transmissionTransmissionHigh level techniquesPathPingTerminal equipment
The invention relates to a joint optimization method for path selection and gating scheduling in a time-sensitive network, which belongs to the technical field of time-sensitive networks, and comprises the following steps: S1, discovering a TSN network topology by CNC, and abstracting the TSN network topology into a network directed graph; s2, the terminal equipment sends a TSN connection request to the CUC, and the CUC sends the connection request to the CNC; s3, the CNC selects K shortest paths as alternative paths; s4, the CNC selects m optimal paths; s5, the CNC finds an optimal transmission path for the TT flow and finds a proper transmission path for the non-TT flow; s6, CNC traversal is completed; s7, configuring a gating list for the optimal transmission path of the TT flow of each pair of terminal equipment; and S8, the CNC packages the calculation result into a gating scheduling table, configures the gating scheduling table to the TSN switch, and sends the flow transmission calculation result to the TSN terminal equipment through the CUC.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
System and method for controlling time dilation in time-sensitive networks
ActiveUS20190123843A1User identity/authority verificationTime-division multiplexClock driftTime sensitive
A system and method determine a clock drift and a clock variance of each node in plural nodes of a time-sensitive Ethernet network. An accumulated clock offset along a time-sensitive network path in the time-sensitive network is determined based on the clock drifts and the clock variances. A guard band having a dynamic size is determined based on the accumulated clock offset. The times at which Ethernet frames are communicated through the nodes are restricted by communicating the guard band with the dynamic size to one or more of the nodes.
Owner:GENERAL ELECTRIC CO
Traffic scheduling method in real-time transmission mechanism
ActiveCN109600319AImprove throughputImplementation reservationNetworks interconnectionHigh level techniquesService flowTraffic capacity
The invention discloses a traffic scheduling method in a real-time transmission mechanism. According to the method, a controller adjusts the forwarding proportion of common service flow according to the current distribution condition of all time-sensitive network slices, and a worst-fit strategy is adopted. In order to avoid congestion when a new flow arrives, a time-sensitive network slice with the maximum residual capacity is selected, and by using the effective scheduling method, convection control can be realized, and mutual influence between different types of flows can be avoided.
Owner:ZHEJIANG GONGSHANG UNIVERSITY
Time-sensitive network traffic shaping method
ActiveCN114422448AImprove bandwidth utilizationReduce the worst end-to-end delayTransmissionHigh level techniquesInternet trafficDistributed computing
The invention relates to a time-sensitive network traffic shaping method, which belongs to the field of time-sensitive networks, and comprises the following steps: S1, additionally adding a BE queue on the basis of a CQF mechanism; s2, distinguishing the time-sensitive traffic and the BE traffic at the enqueue port by taking whether the traffic is the time-sensitive traffic or not as a standard; s3, inserting the BE flow into the remaining time slot part of the odd-even queue at an output port for transmission; and S4, finally, performing optimization solution through the idea of a heuristic algorithm for simulating annealing by conditional constraints to obtain a corresponding scheduling strategy, and finishing shaping and scheduling of the mixed time-sensitive traffic and the BE traffic. According to the method, the bandwidth utilization rate of the time-sensitive network can be obviously improved, and the worst end-to-end delay is reduced.
Owner:CHONGQING UNIV
Avionics data networks
An apparatus and method for operating an avionics data network includes a network switch core configured for a time-sensitive networking (TSN) schema, a set of TSN networking end nodes communicatively connected with the network switch core, a set of ARINC 664 part 7 (A664p7) networking end nodes communicatively connected with the network switch core, and an A664p7 legacy module connected with, or incorporated into, the network switch core and configured to receive a set of A664p7 networking data from the set of A664p7 networking end nodes.
Owner:GE AVIATION SYST LTD
Mixed criticality control system
A control system includes a multi-core processor configured to operate plural different applications performing different operations for controlling a controlled system. The applications are associated with different levels of criticality based on the operations performed by the applications. The processor is configured to provide a single hardware platform providing both spatial and temporal isolation between the different applications based on the different levels of criticality associated with the different applications. The processor also is configured to synchronize communications of the applications operating in a real time operating system with scheduled communications of a time sensitive network (TSN).
Owner:GENERAL ELECTRIC CO
Determinate fault detection and positioning method and system in time sensitive network
ActiveCN110601888AGuarantee topology timelinessEasy to detectData switching networksPath generationTime sensitive
The invention discloses a determinate fault detection and positioning method and system in a time sensitive network, and the method comprises the steps: obtaining a global network topology in the timesensitive network, and determining a detection flow path with the minimum flow coverage according to the global network topology; generating a scheduling table according to the detection flow path, and sending the scheduling table to each switch in the time sensitive network, so that the switch in the time sensitive network sends a detection flow according to a corresponding moment in the scheduling table; and receiving a detection flow sent by a switch in the time sensitive network, and determining whether a link contained in a corresponding detection flow path has a fault or not and the specific position of the fault link according to the arrival state of the received detection flow. By adopting the scheme provided by the specification, the time uncertainty of fault detection and positioning can be reduced, and the purposes of detecting network faults in real time and ensuring the timeliness of the whole network topology are achieved.
Owner:TSINGHUA UNIV
Communication system and method for scheduling communications within a time sensitive network
ActiveUS20180006956A1Distributed architecture usageData switching networksCommunications systemTime sensitive
A communication system includes one or more node devices having routing circuitry configured to receive data from one or more other node devices within a communication network and to send the data to at least one other node device or a final destination device and a scheduling controller configured to generate schedules for sending the data through the routing circuitry within the communication network. The scheduling controller communicates with one or more other scheduling controllers in the one or more other node devices in generate the schedules for sending the data through the communication network.
Owner:GENERAL ELECTRIC CO
Gas leakage monitoring system, FLNG system and gas leakage monitoring method thereof
PendingCN109029847ARealize online monitoring and controlImprove securityComponent separationThermometers using electric/magnetic elementsControl mannerEngineering
The invention relates to a gas leakage monitoring system, a FLNG system and a gas leakage monitoring method thereof, and belongs to the field of the health, the environmental protection and the security. The monitoring system comprises a sensing unit, a control unit and an optical communication unit; the sensing unit collects gas concertation, environment temperature, wind speed and like information; the control unit acquires the data collected by the sensor, performs signal conditioning, generates a control instruction and sends to a purification device; and the optical communication unit performs data communication with the FLNG system by adopting the optical fiber. The hydrogen sulfide online monitoring is realized by performing automatic monitoring system design by adopting a centralized distributed control way, once the hydrogen sulfide leaks, the emergency purification treatment is immediately performed, the security and the reliability of the system are improved. The monitoringdevice disclosed by the invention has a time sensitive network, the certainty communication and synchronous measurement can be performed on various standard Ethernets, the monitoring device can be independently operated by breaking away from an upper computer, and the monitoring efficiency is improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Message forwarding method, forwarding equipment and network equipment
Owner:HUAWEI TECH CO LTD
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