16 results about "Frame Relay" patented technology

To implement the function of giving an appropriate response to a specific request by small-sized software.SOLUTION: A relay device 2 relays communication frames between first and second ECUs 3 and 4 connected to first and second communication lines 5 and 6, respectively. The relay device 2 includes an L3 switch 12, a control unit 21, and a RAM 33. The L3 switch 12 executes a relay process for relaying the communication frames. The control unit 21 controls the relay device 2. The RAM 33 stores a fixed message 35. The L3 switch 12 determines whether or not a communication frame satisfying a request detection condition (hereinafter, a specific frame) has been received from the first and second ECUs 3 and 4. When the specific frame has been received, the control unit 21 transmits a communication frame including the fixed message 35.SELECTED DRAWING: Figure 1

Devices, networks, systems, methods, and processes for scheduling transmissions from a plurality of ambient power devices are described herein. An Access Point (AP) may determine whether one or more ambient power devices are overlapping or non- overlapping based on one or more device characteristics associated with the one or more ambient power devices. The AP may transmit, to a wireless device, a charging instruction signal based on the one or more device characteristics. The one or more ambient power devices may receive one or more charging frames from the wireless device. The wireless device can receive one or more uplink frames and relay the one or more uplink frames to the AP. The AP may record the one or more charging frames, generate one or more charging profiles for the one or more ambient power devices, and develop an energy management strategy based on the one or more charging profiles.

To provide a network system and a relay device capable of securing a relay path for a frame even when a double failure occurs.SOLUTION: A first aware node (ASWB), which is one of aware nodes, includes an aware backup port Pb_a connected to a master backup port Pb_m via a backup line 18, and relays fault monitoring frames DFMm, DFMs received at two aware ports Pa1, Pa2, respectively, to the aware backup port Pb_a. When the master backup port Pb_m does not receive both fault monitoring frames DFMm, DFMs, a master node MN changes the master backup port Pb_m, which is in a blocking state BK, into a forwarding state.SELECTED DRAWING: Figure 4

The application discloses an infrared small target tracking method and system based on local trackers, and the method comprises the following steps: step (1), generating filters corresponding to each convolution layer in a pre-trained multi-convolution layer network; step (2), generating a plurality of local trackers, each local tracker comprising a multi-layer convolution layer network, a plurality of filters, a fusion module and a maximum value solving module; step (3), training the local trackers to obtain trained local trackers; and step (4), dividing a region to be identified into a plurality of local regions, and deploying the trained local trackers in different local regions to track targets, wherein, in the tracking process, if a local target is located, the local tracker will follow the target to move, and the target will be tracked in subsequent frames until the target cannot be tracked any more. The application can realize long-term tracking of frequently discontinuous moving targets.

A vehicle-mounted communication system includes: a plurality of vehicle-mounted devices; and a relay device, wherein a first vehicle-mounted device of the vehicle-mounted devices transmits a frame addressed to a second vehicle-mounted device of the vehicle-mounted devices to the relay device, the frame being a frame for transmission and reception of information between the first vehicle-mounted device and the second vehicle-mounted device, and the relay device determines whether or not relay of the frame to the second vehicle-mounted device is permissible based on a result of comparison between a required safety level and a system safety level, the required safety level being a level of safety required for communication between the first vehicle-mounted device and the second vehicle-mounted device, the system safety level being at least based on function safety levels of the first vehicle-mounted device and the second vehicle-mounted device regarding safety of a vehicle.

This operating method of a relay in a wireless LAN system may comprise steps in which a relay: receives a first frame from an AP, the first frame MAC header including a first indicator indicating that the first frame is transmitted through the relay; transmits a second frame to an STA on the basis of the received first frame; receives, from the STA, a first response frame generated on the basis of the first frame, the first response frame MAC header including a second indicator indicating that the first response frame is transmitted through the relay; and transmits, to the AP, a second response frame on the basis of the first response frame.

The invention relates to a communication rejection scene long-distance low-power LoRa relay networking method, which comprises the following steps that: an intelligent gateway fixedly broadcasts a greeting frame in a public channel, a relay device analyzes the greeting frame after receiving the greeting frame, randomly selects one channel from channels of which the device available identification code is zero in the greeting frame, converts the selected channel into a corresponding frequency, and transmits the corresponding frequency to the intelligent gateway; a registration frame is sent to the intelligent gateway through a frequency band corresponding to the corresponding frequency, and the intelligent gateway determines whether to register the relay equipment according to the relay equipment table after receiving the registration frame; after the relay equipment completes registration, the intelligent gateway monitors a relay equipment message, after the intelligent gateway receives a WNU frame sent by the relay equipment, the intelligent gateway calculates the remaining working time of the relay equipment, when the remaining working time of the relay equipment meets the link round-trip time required by one-time communication, a starting frame is sent, and after the relay equipment receives the starting frame, the relay equipment sends the link round-trip time required by one-time communication; and starting downlink data transmission. According to the invention, the communication timeliness and reliability can be ensured while network low-power-consumption control is realized.

The application provides a method and device for heterogeneous security reinforcement of a pulse code modulation voice data stream, which comprises: dividing each frame E1 relay code stream data into four functional areas in units of channels; pre-arranging data in a first voice data channel area to be reinforced to form a 16-byte row matrix, and then performing a 128-bit mode grouping algorithm to reinforce the data; pre-arranging data in a second voice data channel area to be reinforced to form a 14-byte row matrix, and then performing an S-box different from the previous step to complete nonlinear permutation; performing XOR calculation on the data in the second voice data channel area to be reinforced by using a dynamic round key of the first voice data channel area to be reinforced, and then performing mixed operation on the data in the two channel areas; pushing the data after reinforcement into an E1 relay code stream sending buffer, and then sequentially sending the data through a relay interface LIU chip when the next 125-microsecond frame synchronization arrives; and performing desolidification processing on the data received by a switch of a receiving end.

To ensure the simultaneity of frame reception in a plurality of communication devices without requiring any complex control and without reducing data transmission efficiency.SOLUTION: An in-vehicle system includes a first in-vehicle device, a second in-vehicle device, and a plurality of relay devices that relay a frame to the first in-vehicle device and the second in-vehicle device. When the number of relay devices in a first communication path from a transmission source of the frame to the first in-vehicle device is different from the number of relay devices in a second communication path from the transmission source of the frame to the second in-vehicle device, at least one of the relay devices included in the first communication path and the relay devices of the second communication path waits for a waiting time based on a difference between the number of relay devices in the first communication path and the number of relay devices in the second communication path, and then relays the frame.SELECTED DRAWING: Figure 1

A relay device, an in-vehicle communication system, a vehicle, and an in-vehicle communication method, the relay device being provided with: a relay unit that performs relay processing on frames transmitted and received between a plurality of function units; and a relay management unit that receives, from the function unit, a target frame having information capable of identifying a request source of a service and information capable of identifying the content of the requested service, and outputs the received target frame to the relay management unit, the target frame being transmitted and received in accordance with a predetermined communication protocol, and the target frame being a frame having information capable of identifying the request source of the service and information capable of identifying the content of the requested service. When the content of the target frame received from the relay unit satisfies a predetermined condition, the relay management unit stores the position information in the target frame and outputs the target frame in which the position information is stored to the relay unit. The location information is information relating to the location of the function unit that is a request source for the service related to the target frame or the function unit that is a request target for the service related to the target frame in the in-vehicle network, and the relay unit transmits the target frame received from the relay management unit to the function unit that is a destination for the target frame.

A relay device that performs frame relay processing between a plurality of function units in an in-vehicle network, the relay device being provided with: a plurality of communication ports; a storage unit that stores correspondence information indicating a correspondence relationship between a destination MAC address included in the frame and the communication port; a state monitoring unit that monitors the state of the in-vehicle network; an update unit that performs update processing of the correspondence information; a switching unit that switches between a stopped state in which the update process is stopped and an executed state in which the update process is executed; and a storage unit that, when the switching unit switches from the execution state to the stop state, stores the correspondence information on which the update processing has been performed in the execution state in the storage unit as the correspondence information used in the relay processing in the stop state.

The present disclosure relates to communication range extension using a relay in a wireless LAN system. According to an embodiment of the present disclosure, provided is a method comprising the steps in which: a relay station (STA) receives a first beacon frame from an access point (AP); the relay STA transmits, to an end STA, a second beacon frame including relay transmission notification and at least a portion of information included in the first beacon frame, wherein the relay transmission notification indicates that a frame including the relay transmission notification is transmitted by the relay STA; the relay STA relays one or more frames for association between the AP and the end STA on the basis of the transmission of the second beacon frame including the relay transmission notification; and the relay STA relays data transmission between the AP and the end STA after the AP and the end STA are associated with each other.

Devices, networks, systems, methods, and processes for scheduling transmissions from a plurality of ambient power devices are described herein. An Access Point (AP) may determine whether one or more ambient power devices are overlapping or non-overlapping based on one or more device characteristics associated with the one or more ambient power devices. The AP may transmit, to a wireless device, a charging instruction signal based on the one or more device characteristics. The one or more ambient power devices may receive one or more charging frames from the wireless device. The wireless device can receive one or more uplink frames and relay the one or more uplink frames to the AP. The AP may record the one or more charging frames, generate one or more charging profiles for the one or more ambient power devices, and develop an energy management strategy based on the one or more charging profiles.

To reduce a bus load while suppressing the impact on relay processing of a frame in an on-vehicle network.SOLUTION: An on-vehicle communication system includes a plurality of on-vehicle devices, and a plurality of on-vehicle relay devices including a first on-vehicle relay device and a second on-vehicle relay device connected via a communication bus to the first on-vehicle relay device. The on-vehicle relay devices perform relay processing of relaying frames transmitted and received among the on-vehicle devices. The first on-vehicle relay device performs compression processing of compressing the frames, and transmits the frames after the compression processing to the second on-vehicle relay device via the communication bus. The second on-vehicle relay device performs expansion processing of expanding the frames after the compression processing received from the first on-vehicle relay device and performs the relay processing on the frames after the expansion processing.SELECTED DRAWING: Figure 8

This device provides a relay system that can suppress unnecessary waiting times in tools and other systems even if diagnostic frame relay failures occur. [Solution] A relay device for relaying communication between a tool and an ECU, comprising: a buffer for holding frames awaiting relay, a determination unit for determining whether or not an overwrite of a diagnostic frame to be communicated from the ECU to the tool occurs; a storage unit for storing identification information of the ECU that sent the diagnostic frame to be overwritten and data of the diagnostic frame to be overwritten, if the determination unit determines that an overwrite has occurred; and a notification unit for notifying the tool of a relay failure based on the identification information and data stored in the storage unit.