43 results about "Maximum transmission unit" patented technology

There is provided a method for performing Maximum Transmission Unit size enforcement. The method comprises: receiving at a first node, a first Maximum Transmission Unit size threshold and at least one Packet Detection Rule associated with the first Maximum Transmission Unit size threshold, each of the at least one Packet Detection Rule being associated with one or more enforcement actions for a Protocol Data Unit session; determining at the first node, whether the size of a packet received from a network host exceeds the first Maximum Transmission Unit size threshold; and performing at the first node, an action corresponding to the at least one Packet Detection Rule associated with the first Maximum Transmission Unit size threshold if it is determined that the size of the packet exceeds the first Maximum Transmission Unit size threshold.

The present technology relates to a communication device, a communication terminal, and a communication method that enable efficient sharing of data for cooperative transmission.A communication device divides shared data to be shared with another communication device for each information type in the shared data in order to perform cooperative transmission to a communication terminal, and generates a data unit less than or equal to a maximum transmission unit in a transmission path. The present technology can be applied to a wireless communication system.

The invention relates to the technical field of protocol conversion, in particular to an E1 / IP video conference protocol conversion device and system, and the system comprises a frame structure mapping module, a signaling adaptation module, a media stream packaging module, a buffer area control module and a synchronous coordination module. According to the invention, the synchronization mark and the load field of the physical layer framing structure are extracted, the maximum transmission unit parameter is combined, the frame packet boundary is accurately identified, the cross-network data positioning accuracy is improved, the call control mapping relation is established based on key field identification, and the session continuity between heterogeneous signaling is enhanced; the audio and video sampling rate and timestamp fundamental frequency are matched and verified, the consistency of media stream transmission time delay is guaranteed, interface throughput and time slot occupation changes are dynamically monitored, a buffer regulation and control instruction is generated, and the data transmission stability under burst flow is improved; the synchronization accuracy of the protocol conversion system in a heterogeneous network environment is realized, and the reliability of real-time services such as video conferences and the like is enhanced.

The systems and methods disclosed herein provide for coalescing data packets into jumbo frames in order to maximize the throughputs inside the service provider Local Area Network (LAN), thereby increasing the amount of traffic forwarded between internal services. The systems and methods outlined herein enable a source service on a LAN to receive a plurality of data packets from a public cloud-based network (e.g., the Internet) having a packet size limit less than the MTU limit of the LAN, and coalesce the plurality of data packets into a jumbo frame having a size based on the MTU limit of the LAN. The jumbo frame is then transmitted over the LAN to a destination service on the LAN. The destination service then separates the jumbo frame back into the plurality of data packets for further transmission back to the public cloud-based network.

An example user equipment (UE) device for exchanging media data via a network includes: a memory configured to store media data; and a processing system including one or more processors implemented in circuitry, the processing system being configured to: receive data from a second network device via a radio access network (RAN), the data from the second network device including a local Internet Protocol (IP) address type for the second network device and a maximum transmission unit (MTU) size for the second network device; establish a media communication session with the second network device; transmit data representing the local IP address type and MTU size for the second network device to a gateway device associated with the RAN; and receive packets of Protocol Data Units (PDUs) derived from the media communication session of the second network device via the RAN.

The invention relates to the technical field of communication, and provides a data transmission method, computer equipment and a computer readable storage medium. The method comprises the following steps: after a Bluetooth connection completion event with upper control equipment is detected, sending a maximum transmission unit negotiation request to the upper control equipment; determining a first negotiation result according to the maximum transmission unit response returned by the upper control equipment, and determining a target maximum transmission unit of the Bluetooth connection according to the first negotiation result; then, a link layer data length negotiation request is sent to the upper control equipment; determining a second negotiation result according to a link layer data length response returned by the upper control equipment, and determining a target link layer data length of the Bluetooth connection according to the second negotiation result; and according to the target maximum transmission unit and the target link layer data length, performing operation data transmission with the upper control equipment based on Bluetooth connection. According to the invention, the operation data can be normally transmitted between the self-operation equipment and the upper control equipment based on the Bluetooth connection.

Embodiments of the present application provide a data transmission method, comprising: in a case where a first transmission path between a first processing core and a second processing core supports transmission of inter-core data of a first maximum transmission unit (MTU) length, the first processing core transmits inter-core data on the first transmission path based on the first MTU length, and the second processing core is configured to offload received inter-core data based on an MTU length of an adaptive communication network, wherein the first MTU length is greater than the MTU length of the adaptive communication network. Embodiments of the present application also provide a data transmission device, a communication device and a storage medium.

Embodiments of the present disclosure relate to network devices that use different types of routing engines. One routing engine or set of routing engines may, for example, use adaptive routing, which, although computationally intensive, routes packets more accurately and thus provides more efficient use of the available bandwidth. The other routing engine or set of routing engines may, for example, use random routing, which is significantly less computationally intensive. Packets can be routed by selectively using one of these engines based on the size or type of packet. Large packets, such as those with a maximum transfer unit (MTU), may, for example, be routed using the adaptive routing engine, while small packets, such as an ACKnowledge (ACK) packet, may be routed using the random routing engine.

Techniques for a head-end node in one or more network autonomous systems to utilize a protocol to instantiate services on tail-end nodes. The head-end node can use a service request mechanism that is enabled by the protocol to request service instantiation on the tail-end node without a network operator having to manually configure the tail-end node, or even having access to the tail-end node. Additionally, the protocol may provide mechanisms to define handling attributes for traffic of the service (e.g., quality of service (QoS) attributes, Maximum Transmission Unit (MTU) settings, etc.), service acknowledgement mechanisms for the head-end node to determine that the service was instantiated on the tail-end node, and so forth. In this way, a head-end node can be used to instantiate a service on a tail-end node without a network operator having to have direct access to the tail-end node to manually configure the tail-end node.

The embodiment of the invention provides a method and device for determining a maximum transmission unit of a network, a medium and equipment, and the method comprises the steps: triggering the building of an adjacency relation through initializing a target network comprising a plurality of target equipment, comparing the initial unit value of the maximum transmission unit for each equipment pair in a bidirectional communication state, and determining the maximum transmission unit according to the initial unit value of the maximum transmission unit; and further negotiating to obtain a target unit value, so as to realize maximum transmission unit synchronization based on the target unit value. And in a communication process based on the target unit value, when the value of the maximum transmission unit of the target equipment in the equipment pair is changed, re-triggering adjacency relation establishment, ensuring the consistency of the maximum transmission unit, and determining the maximum transmission unit of the network until a preset negotiation condition is met. By dynamically detecting and adjusting the MTU value, manual intervention is not needed, the problems of communication interruption and the like caused by mismatching of the MTU between the target devices in the target network are reduced, and the communication reliability and the overall transmission efficiency of the target network are improved.

The application relates to a TCP maximum transmission unit dynamic adjustment method and system based on a programmable data plane, and belongs to the technical field of computer networks. Whether the length exceeds the port MTU size is judged by identifying the data packet encapsulation structure, the TCP SYN message maximum transmission unit option is dynamically corrected to inform the opposite end device to adjust the data packet size, different tunnel encapsulation structures are dynamically adapted, and the link efficiency is maximized; according to different tunnel encapsulation structures, the TCP maximum transmission unit size is dynamically adjusted, higher flexibility can be supported to be extended to other types of tunnels, the terminal device and the intermediate device are transparent, the existing infrastructure does not need to be modified, compared with software implementation, linear speed forwarding can be realized, the method has the characteristics of good expansibility and high flexibility, and the MSS size can be adjusted according to the traffic of different network states.

Presented herein are techniques to address a lack of path maximum transmission unit discovery in the context of, e.g., the control and provisioning of wireless access point (CAPWAP) protocol for multicast communications. In one embodiment, IPv4-IPv6-IPv4 network address translation is used to avoid a conservative maximum transmission unit size. In another embodiment, unicast and multicast path maximum transmission unit discovery techniques are executed to set the maximum transmission unit size for multicast communications.

The present disclosure relates to methods, apparatuses, devices and products for transmitting live data. The method comprises: in response to a live path from a sender to a receiver being established, transmitting, by the sender, a first probe packet having a first data packet size to the receiver through the live path. The method further comprises: in response to receiving a first response message for the first probe packet from the receiver, determining, by the sender, a maximum transmission unit for the live path based on the first data packet size. The method further comprises: transmitting, by the sender, live data to the receiver through the live path based on the maximum transmission unit.

The application provides an 8K high code rate panoramic live broadcast grading distribution method for a sports event private network, and belongs to the technical field of live broadcast distribution.The original 8K panoramic video is compressed and encoded by a high-efficiency video coding standard to generate a high code rate video stream in a live source node, and the high code rate video stream is pushed to a first forwarding node through a real-time transmission protocol.The maximum transmission unit of the private network full link is uniformly configured as 9000 bytes in the first forwarding node, and a data plane development kit user state protocol stack is enabled.A second distribution node concurrently pushes the high code rate video stream to terminal equipment through a lock-free ring buffer.A fault detection module combines active heartbeat detection with passive response time monitoring to monitor the node state in real time, and migrates the affected terminal to a backup node within a second, thereby solving the technical problems of high transmission delay and poor concurrent stability of the high code rate video stream during the grading distribution of the 8K high code rate panoramic video of the sports event private network.

The invention discloses a distributed denial of service attack relieving method, device and equipment, and belongs to the technical field of information security. Performing multi-dimensional identification on data packets in the DDoS attack data stream, and determining abnormal data packets; judging the data packet type of the abnormal data packet; if the data packet type is a bandwidth depletion type attack data packet, fragmenting the abnormal data packet based on a maximum transmission unit in the network to obtain a plurality of data packet fragments corresponding to the abnormal data packet; transmitting data corresponding to the abnormal data packet by using the plurality of data packet fragments; if the data packet type is a resource depletion type attack data packet, performing path disturbance and redirection on the abnormal data packet based on a plurality of path disturbance parameters in a preset path disturbance parameter set, and determining a target route of the abnormal data packet; and transmitting data corresponding to the abnormal data packet by using the target route. By fragmenting the data packet and evenly grooming the attack request, effective defense of DDoS attack can be realized.

Techniques are disclosed for identifying a maximum segment size (MSS) for a path. For example, a first router includes a routing engine and a packet forwarding engine. The routing engine is configured to identify a path maximum transmission unit (MTU) corresponding to a path between the first router and a second router; and identify a maximum packet overhead size corresponding to a session between a first client device and a second client device over the path between the first router and the second router. Additionally, the routing engine is configured to calculate, based on the path MTU and the maximum packet overhead size, a path maximum segment size (MSS), wherein the path MSS represents a maximum packet payload size corresponding to the path; and control the packet forwarding engine to output information indicative of the path MSS.

The systems and methods disclosed herein provide for coalescing data packets into jumbo frames in order to maximize the throughputs inside the service provider Local Area Network (LAN), thereby increasing the amount of traffic forwarded between internal services. The systems and methods outlined herein enable a source service on a LAN to receive a plurality of data packets from a public cloud-based network (e.g., the Internet) having a packet size limit less than the MTU limit of the LAN, and coalesce the plurality of data packets into a jumbo frame having a size based on the MTU limit of the LAN. The jumbo frame is then transmitted over the LAN to a destination service on the LAN. The destination service then separates the jumbo frame back into the plurality of data packets for further transmission back to the public cloud-based network.

A system and a method for performing exchange of lidar datapoints between a lidar sensor and a host computing device are provided. The lidar sensor stores a sensor payload size range, and the host computing device stores a host payload size range. When the lidar connection is initiated, the host computing device and the lidar sensor perform handshaking to determine an overlapping range between the host sensor payload size range and the sensor payload size range, and to negotiate an acceptable datapoint payload size based on the overlapping range. Once the handshaking is complete, the lidar connection may be performed using the acceptable data point payload size as a payload size thereof. Thus, the payload size is independent of a maximum transmission unit (MTU) of an Ethernet.

A method of controlling communications includes at a server determining a current vehicle geographic location, determining a communications channel is available for the vehicle at the determined current vehicle location, dynamically adjusting a maximum transmission unit, MTU, used by the vehicle for communications over the available communications channel based on a predicted optimal MTU determined from a current time and geographic location of the vehicle. The adjusted MTU setting may be dependent on whether a communications comprises a mobile originating, MO, message sent by the vehicle or a mobile terminating, MT, message received by the vehicle, and sending the adjusted MTU for the satellite communications channel to the vehicle. The dynamic adjustment of the MTU increases the data volume which can be communicated between the vehicle and a communications satellite using the respective current or next available satellite-communications channel.

The application belongs to the technical field of Internet of Things device management, and discloses a Bluetooth device batch initialization and fine management system and method based on a mobile gateway. The system is composed of a cloud management platform, a mobile gateway and a Bluetooth terminal. The mobile gateway and the Bluetooth terminal form a bidirectional space-time characteristic fingerprint through multiple bidirectional physical layer interactions, and the sequence value and the shared secret generated by bidirectional certificate authentication are used as key materials to derive a session key to establish an encrypted channel. Application layer data is adaptively fragmented according to the negotiation value of the current Bluetooth maximum transmission unit, the receiving end assembles and executes single and full volume checking according to the serial number. The cloud management platform determines the effective version according to the timestamp priority, permission priority and manual intervention three-level mechanism based on the parameter version account of the concurrent parameter modification record of the same Bluetooth terminal. The application takes into account the pairing anti-relay, reliable transmission of application layer data and consistency of multiple gateway concurrent parameters without relying on a special Bluetooth gateway.

A message processing method includes: after obtaining a message to be processed from a data stream, determining the maximum transmission unit (MTU) of the data stream based on the data stream identifier in configuration information; if the message length of the message to be processed is greater than the MTU of the data stream, obtaining a target message identifier, and then dividing the message to be processed into multiple message fragments with target message identifiers according to the MTU of the data stream; shaping the multiple message fragments according to the output interval of the data stream; and sending the shaped message fragments. This method can shape data streams including large data messages, reducing the burstiness of the data stream output and the possibility of data loss. This application also provides a network device capable of implementing the above message processing method.

Methods and systems for in session packet adjustment are described. A computing system may establish, between a client device and a server, a packet transport session. The computing system may detect, during the packet transport session, that a threshold number of packets have failed to successfully transmit between the client device and the server, where a size each of the failed packets exceeds a predetermined size, and where the packets are transmitted according to a first MTU. The computing system may identify, during the packet transport session and based on a largest packet that successfully travelled between the client device and the server, a second MTU, smaller than the first MTU. The computing system may resize, during the packet transport session, further packets according to the second MTU. The computing system may transmit, during the packet transport session, the further packets between the client device and the server.

The embodiment of the invention provides a data retransmission method and device, equipment, a storage medium and a program product, and the method comprises the steps: obtaining a first maximum acknowledgement packet serial number, determining a first serial number interval according to the first maximum acknowledgement packet serial number and a packet serial number of a first original data packet which does not receive an acknowledgement message, determining a first sending time interval according to the sending time of the original data packet corresponding to the first maximum acknowledgement packet serial number and the sending time of the first original data packet; determining a first packet loss judgment threshold based on the first current bandwidth, the first current round-trip delay, a preset packet loss proportion and the maximum transmission unit length, and determining a second packet loss judgment threshold based on the first current round-trip delay; and when the frame type of the frame where the first original data packet is located is a non-key frame, the first serial number interval is greater than a first packet loss judgment threshold, and the first sending time interval is greater than a second packet loss judgment threshold, retransmitting the first original data packet. According to the scheme, the invalid retransmission proportion can be reduced.

The embodiment of the application discloses a data transmission acceleration method and device based on a maximum transmission unit, wherein the method comprises the following steps: obtaining the MTU of a next device, determining the size of the fillable space of a current data packet according to the MTU and the space size of the existing data of the current data packet; obtaining a target prediction dictionary corresponding to the size of the fillable space; obtaining the data of the fillable space according to the existing data of the current data packet and the target prediction dictionary, wherein the similarity between the data of the fillable space and the preceding data of a next data packet is greater than a preset threshold; generating a filled current data packet according to the existing data of the current data packet and the data of the fillable space, and sending the filled current data packet. The embodiment of the application determines the fillable space size of the current data packet based on the MTU, and obtains the data of the fillable space in combination with the target prediction dictionary, so that the device generates a data packet carrying more data, and the effect of improving the data transmission efficiency is achieved.

The invention provides a message interaction method, electronic equipment, a storage medium and a computer program product. The method is applied to a fast forwarding network element, and comprises the following steps: receiving and analyzing a first message to obtain a first message header, the first message header comprising a first message length, first data information and first quintuple information; judging whether to forward the first message to a slow forwarding network element based on the first quintuple information; if so, judging whether the first message length is greater than or equal to a preset threshold value; wherein the preset threshold value is smaller than or equal to the maximum transmission unit of the interconnection port between the fast forwarding network element and the slow forwarding network element; if the first message is greater than or equal to the preset threshold value, storing the first data information, extracting a first message header from the first message, and forwarding the first message header to a slow forwarding network element; if the first message is smaller than the preset threshold value, forwarding the first message to a slow forwarding network element; in this way, communication of ultra-long messages between network elements is achieved.

The application discloses a data transmission method, device, equipment, storage medium and program product. The method is applied to a sending node, and specific technical solutions comprise the following steps: acquiring network resource information of the sending node according to a preset sampling frequency, wherein the network resource information is used for representing network quality corresponding to a network to which the sending node belongs, and the preset sampling frequency is calculated by the sending node according to historical network resource information of the sending node; calculating a maximum transmission unit (MTU) value corresponding to the sending node according to the network resource information; performing slicing processing on to-be-transmitted data according to the MTU to obtain a first data slice; and sending the first data slice to a receiving node. In this way, the network transmission quality can be improved by adjusting the MTU value in real time.

The invention relates to a packet generation method and equipment for ordered data unloading. Apparatuses, methods, and systems are provided for packet generation for ordered data offloading. An example method includes receiving a first transmission request associated with a first message for transmission via a communication network. The first message includes a data entry, a first message size defined by the data entry, and a first order in which at least a portion of the data entry is executed. The method also includes determining a maximum transmission unit (MTU) of a first transmission queue associated with the communication network. The first transmission queue is associated with a packet extension operation, and the MTU of the first transmission queue defines a maximum packet size of packets transmitted via the first transmission queue. The method further includes generating a first data packet based on the first message, the first data packet having a size less than or equal to the MTU of the first transmission queue.

The present application is directed to the processing of the maximum transmission unit (MTU) parameter under the inter-system change between the 5GS and the EPS, and proposes a session establishment procedure improvement method and a user equipment. Specifically, the PDU session of the "Ethernet" or "unstructured" PDU session type can be transferred to the PDN connection of the "non-IP" PDN type, therefore, the UE can request the MTU parameter of the non-IP link in the PDU session establishment process. On the other hand, the PDN connection of the "non-IP" PDN type can be transferred to the PDU session of the "unstructured" PDU session type, therefore, the UE can request the MTU parameter of the unstructured link in the default EPS bearer context activation process. The session establishment procedure improvement method and the user equipment provided by the present application can improve the user experience.

Examples described herein relate to a network interface device. The network interface device includes a host interface; a network interface; a direct memory access (DMA) circuitry; and a circuitry. In some examples, the circuitry is to determine a change in Maximum Transmission Unit (MTU) size of received packets associated with a first Internet Protocol (IP) flow and modify an MTU size of transmitted packets associated with the first IP flow based on the determined changed MTU size.