26 results about "Packet aggregation" patented technology

The invention discloses a lightweight encrypted traffic classification method and system based on time anchor diagram representation, and belongs to the technical field of network data security. Original traffic packets are preprocessed, and only head and load data are reserved; constructing a head graph and a load graph, dividing the fixed-length byte sequence into a plurality of time intervals, introducing corresponding anchor nodes, connecting the byte nodes in the intervals with anchor points, and injecting absolute / relative position information into the head graph and the load graph to obtain the head graph and the load graph after the time anchor points are enhanced; and on the head graph and the load graph after the time anchor point enhancement, coding the constructed time anchor point byte graph by adopting small-scale GraphSAGE to obtain a packet level vector, completing encryption traffic category judgment through a very simple classification head, and realizing a flow level decision through multi-packet aggregation. According to the method, the accuracy and robustness of encrypted traffic classification can be effectively improved while light weight and deployability are kept.

To reduce bandwidth overheads associated with a message authentication code (MAC), aggregation is useful. To ensure there is no latency impact, something more than aggregation is needed. Integrity and Data Encryption (IDE) securing transaction layer packets (TLPs) can be used in a dynamic manner whereby before aggregating a new packet to the IDE TLP, a determination is made regarding whether the packet contains user data so that the packets with user data can be sent immediately rather than wanting for more packets to aggregate. On the receiving side, execution of the packet can occur before completing an integrity check that occurs in IDE TLP transfers to reduce latency.

Data may be transmitted from a first device to a second device over a data link by transmitting header information for a coalesced data packet before aggregation of data into the coalesced data packet has been completed. The coalesced data packet may aggregate multiple data packets from a data source into a payload. As the second device may receive the header information before it receives the coalesced data packet, the second device may process the received header information without waiting to receive the coalesced data packet.

The invention relates to the technical field of industrial network security, and provides a traffic anomaly detection method and device based on multiple time scales and online incremental learning, equipment and a medium. The core of the method is that metadata are generated by collecting and analyzing the network traffic of the industrial control system; constructing and dynamically optimizing a network traffic behavior baseline model by combining data packet aggregation, short-term and long-term multi-window collaboration and an incremental updating mechanism; and finally, performing multi-dimensional anomaly detection on the real-time traffic by using the model. Through a multi-window cooperation mechanism, second-level instantaneous flow sudden change and hour-level long-term service trend in an industrial control network are synchronously captured, and the problem that a single detection window is poor in adaptability to a complex industrial control flow mode is effectively solved; through an incremental updating mechanism, low-overhead and self-adaptive dynamic evolution of the baseline model is realized, and the false alarm rate and the maintenance cost are remarkably reduced, so that the robustness, the accuracy and the efficiency of industrial network traffic anomaly detection are comprehensively improved.

The invention discloses a low-power-consumption data packet aggregation transmission method and system of a wireless Bluetooth chip, and relates to the technical field of wireless communication. The method comprises the following steps: establishing a connection event energy model according to transmitting power, wake-up power consumption, a physical layer mode and a connection interval, and collecting received signal strength and the number of error packets in a connection period to generate a link quality grade and an estimated retransmission frequency, and estimating two energy consumptions of immediate transmission and delayed aggregation based on an energy model, link quality and cache data, and generating a transmission strategy mark by combining the residual tolerable delay and service priority, and indicating to transmit according to the cache data in the current connection or execute aggregation transmission according to a set aggregation byte quantity and an aggregation time window in the subsequent connection. The aggregation scheduling is performed by fusing energy modeling, link quality and service time delay priority at a chip side, so that the connection energy consumption is reduced on the premise of meeting the time delay constraint, and the overall transmission energy efficiency is improved.

The application discloses a low-power data packet aggregation transmission method and system of a wireless Bluetooth chip, and relates to the technical field of wireless communication. The method comprises the following steps: establishing a connection event energy model according to a transmission power, a wake-up power consumption, a physical layer mode and a connection interval; collecting a received signal strength and a number of error packets during the connection to generate a link quality level and an estimated retransmission number; estimating two energy consumptions of immediate sending and delayed aggregation based on the energy model, the link quality and buffered data; and generating a sending strategy mark combined with a remaining tolerable time delay and a service priority, which indicates sending buffered data in the current connection or performing aggregated sending according to a set aggregation byte amount and an aggregation time window in a subsequent connection. The method fuses energy modeling, link quality and service time delay priority for aggregation scheduling on the chip side, reduces connection energy consumption and improves overall transmission energy efficiency under the premise of meeting time delay constraints.

In one embodiment, a network device includes a network interface to receive secured packets from a remote device over a packet data network, each of the secured packets being secured according to a security protocol and including a respective security protocol header and a Transmission Control Protocol (TCP) packet, which is encrypted according to the security protocol, a host device interface to connect the network device to a host device, and packet processing circuitry to decrypt each of the secured packets based on the respective security protocol header yielding multiple decrypted packets including decrypted TCP packets, aggregate the decrypted TCP packets into a single aggregated packet, and provide the single aggregated packet to software running on a processor of the host device via the host device interface.

The application provides a power hierarchical routing aggregation method and system, which defines an aggregation window, configures a total timeout time, a tentative correlation parameter for the aggregation window, and initializes a loss count, a tentative probability and a waiting set of each sub-flow, starts the aggregation window to receive sub-flow data, and makes tentative judgment on the aggregation window according to the receiving result, sends a pre-warning packet to a missing sub-flow through the tentative result and the tentative probability, collects a pre-warning reply, updates the loss count, the tentative probability and the waiting set of the sub-flow through the pre-warning reply, waits for the sub-flow according to the update state of the waiting set, updates the loss count and the tentative probability of the sub-flow in the waiting set through the waiting result, and performs data packet aggregation forwarding after the waiting set is empty and the tentative initiation condition is not met or after the aggregation window times out, resets the aggregation window and performs the next round of aggregation after forwarding, so that the balance among aggregation efficiency, data integrity and resource saving is achieved through the power hierarchical routing aggregation method.

The invention discloses a satellite network simulation system and method based on an abstract packet and dual-path processing, and mainly solves the problem that the existing satellite network simulation technology is difficult to give consideration to high fidelity and high efficiency in a large-scale and high-traffic scene. The system comprises a switch, a control unit, an abstract packet construction unit, a satellite network simulator and an abstract packet deconstruction unit, and the switch is bidirectionally connected with the units and serves as a connection platform of the system to receive and forward data; the satellite network simulator is used for network layer protocol simulation. The abstract packet construction unit is used for distinguishing a control packet from a service data packet and aggregating the data packet into an abstract packet; the abstract package deconstruction unit restores the abstract package into an original data package, and modifies and verifies the data package according to a simulation result; the control unit manages operation parameters of the system and provides a time synchronization and human-computer interaction interface. According to the method, the system throughput can be improved while the simulation precision is guaranteed, high efficiency and high fidelity are achieved, configuration is flexible, deployment cost is low, and the method can be used for network protocol verification and routing algorithm performance evaluation of large-scale satellite constellations.

A multi radio media access control (MAC) (MRM) transceiver includes a plurality of transceiver systems, each transceiver system assigned a different MAC address, and a memory configured to aggregate, in a shared queue, a plurality of packets of a data stream received via a computer network. Each of the transceiver systems is configured to asynchronously acquire one or more of the packets from the shared queue for transmission in one of a plurality of transmission channels. Each one of the transmission channels comprises a different frequency. The transmission channels are maintained for simultaneous transmission of the one or more packets to a common target user equipment (UE) that is wirelessly coupled to the MRM transceiver.

The application provides an RDMA message aggregation processing method and a network card device, and belongs to the technical field of data communication, and comprises the following steps: S1, an RDMA message analysis step, which comprises a hardware level message capture, a BTH header analysis, and a message classification and metadata generation link; S2, an RDMA cache step, which comprises a message descriptor record and a cache strategy link; S3, an RDMA message aggregation step, which comprises an aggregation context table, an aggregation flow, a newly created aggregation flow, and an existing context aggregation flow link; and S4, a zero-copy aggregation step, which comprises metadata transmission, DMA delay processing, and host memory writing links. In view of the fact that the existing network cards do not attempt to perform stateless aggregation processing on RDMA messages when processing the RDMA messages, the application aggregates multiple received RDMA messages into one larger RDMA message to send to a downstream module for processing, thereby reducing the number of messages processed by the downstream module and improving the bandwidth of the network card for processing the RDMA messages.

The invention belongs to the field of PCIe exchange chips, and relates to a PCIe message aggregation exchange method and device, and the device comprises a PCIe inlet port, an inlet aggregation module, a crossbar switch, an outlet deaggregation module, and a PCIe outlet port. The entrance aggregation module is used for screening and matching the plurality of received TLPs according to a preset aggregation condition, and judging whether an aggregation requirement is met or not; the crossbar switch is used for receiving the CTLP or the independent TLP sent by the inlet aggregation module, and forwarding the CTLP or the independent TLP to the corresponding outlet deaggregation module according to a destination port of a message; and the outlet deaggregation module is used for receiving the message forwarded by the crossbar switch and judging whether the message is a CTLP or an independent TLP. The bandwidth utilization rate is greatly improved, the transmission delay is remarkably reduced, the compatibility is excellent, the implementation cost is low, the reliability is high, and the universality is high.

A method and a device for combined transmission of voice packets in non-terrestrial network are disclosed. A method of a UE comprises the steps of: receiving aggregation configuration information for a packet aggregation operation from a base station; generating a first combined packet comprising multiple packets on the basis of the aggregation configuration information; and transmitting the first combined packet to the base station.

To reduce the bandwidth overhead associated with a message authentication code (MAC), aggregation is beneficial. However, to ensure no latency impact, more than just aggregation is required. Integrity and Data Encryption (IDE) can be dynamically employed to secure transaction layer packets (TLPs). This determines whether a new packet contains user data before aggregating it into an IDE-TLP, allowing packets containing user data to be sent immediately instead of requiring further packet aggregation. On the receiving end, packet execution can occur before the integrity check performed during IDE-TLP transmissions is completed, further reducing latency.

The present invention relates to a diagnostic method (100) for diagnosing a state of an electrochemical cell (301) of an electrochemical energy converter (300), wherein the diagnostic method (100) comprises:determining (101) a curve (201) of electrical properties of the electrochemical cell over time,determining (103) analyzable data packets (205, 209),aggregating (105) at least one region (207, 211) of respective analyzable data packets (205, 209) into an aggregated curve,determining (107) a slope for at least one region of the aggregated curve,assigning (109) a characteristic value to the slope according to a specified assignment scheme in order to quantify a state of the electrochemical cell,outputting (111) the characteristic value on an output unit,wherein an analyzable data packet (205, 209) comprises a plurality of data points whose values differ from one another by at most a specified threshold value for at least a specified duration.

This invention belongs to the field of PCIe switching chips and relates to a PCIe packet aggregation and switching method and apparatus. The apparatus includes a PCIe ingress port, an ingress aggregation module, a crossbar switch, an egress deaggregation module, and a PCIe egress port. The ingress aggregation module is used to filter and match multiple received TLPs according to preset aggregation conditions to determine whether they meet the aggregation requirements. The crossbar switch is used to receive CTLPs or independent TLPs sent by the ingress aggregation module and forward them to the corresponding egress deaggregation module according to the destination port of the packet. The egress deaggregation module is used to receive packets forwarded by the crossbar switch and determine whether they are CTLPs or independent TLPs. This invention significantly improves bandwidth utilization, significantly reduces transmission latency, has excellent compatibility, low implementation cost, high reliability, and strong universality.

The present embodiments relate generally to data communications, and more particularly to methods and apparatuses for packet reordering and aggregation. One or more embodiments relate to a solution in which transaction layer reordering is made aware of IDE aggregation requirements. For example, PCIe packets are reordered to minimize the occurrence of blocked packets due to incomplete aggregation for certain types of PCIe packets which still need to be encrypted. This leads to improved traffic variation and higher throughput, while still ensuring that IDE security requirements are upheld and maintained.

Provided are a data transmission method, a data transmission device and an embedded device, wherein the method is applied to the embedded device, the embedded device is connected with a local area network (LAN) device and a cellular device, and is used for enabling the LAN device to access a cellular network provided by the cellular device, the method comprising: receiving a downlink aggregated data packet sent by the cellular device; and / or sending an uplink aggregated data packet to the cellular device; wherein the downlink aggregated data packet is formed by aggregation of multiple downlink data packets, and the uplink aggregated data packet is formed by aggregation of multiple uplink data packets. In this application, the data packet transmission between the embedded device and the cellular device adopts an aggregated transmission mode. For example, multiple uplink data packets are aggregated to form an uplink aggregated data packet for transmission; for another example, multiple downlink data packets are aggregated to form a downlink aggregated data packet for transmission. In this way, the throughput of the network is improved.

The application discloses a kind of Internet of Things flow acquisition and malicious flow classification detection method, comprising: based on the polling dormancy length of adaptive determination, utilize data plane development kit to obtain the network traffic of Internet of Things;Based on multiple hash strategy and polling load strategy, the network traffic is shunted, and the data stream after load balancing is obtained;Based on the measurement data of data stream is handled with multiple packet aggregation based on aggregation update strategy, update multistage hash table and generate flow reorganization data packet;Malicious flow classification and detection are carried out to flow reorganization data packet, capture malicious code and generate corresponding flow detection result.The scheme is shunted to network traffic by combining multiple hash strategy and polling load strategy, load balancing is realized between multiple cores, and the utilization and performance of multicore processor are improved;Support one-stop malicious flow detection and malicious code capture, without using honeypot for entrapment type malicious code capture, to improve the efficiency and accuracy of flow detection.

The subject technology is directed to an apparatus for managing data packets in a network. In an embodiment, the apparatus comprises a first memory configured to store a plurality of packets. The apparatus further comprises a queue manager configured to receive a plurality of packet descriptors and generate an aggregated packet descriptor based on the plurality of packet descriptors. The apparatus further comprises a traffic manager coupled to the queue manager. The traffic manager is configured to determine a transmission order for the plurality of packets based on the aggregated packet descriptor. A transmitter is coupled to the traffic manager and configured to transmit the plurality of packets based on the determined transmission order. This configuration enables efficient packet storage, aggregation, and transmission scheduling, optimizing overall network performance and resource utilization. There are other embodiments as well.

Data may be transmitted from a first device to a second device over a data link by transmitting header information for a coalesced data packet before aggregation of data into the coalesced data packet has been completed. The coalesced data packet may aggregate multiple data packets from a data source into a payload. As the second device may receive the header information before it receives the coalesced data packet, the second device may process the received header information without waiting to receive the coalesced data packet.

The invention relates to the technical field of data transmission, and provides a data packet inter-chip transmission method and device, and the method comprises the steps: a transmitting end transmits a data packet to a receiving end, and the data packet has length information and verification information; the data packet is received by a receiving end and verifies the length information and the verification information; wherein the data packet of which the length information reaches a length threshold value is directly sent, received and verified; and aggregating, sending, receiving and de-aggregating the data packets of which the length information is smaller than the length threshold, and verifying the verification information of the de-aggregated data packets. According to the packet aggregation transmission method provided by the invention, the problems of high transmission overhead and low transmission efficiency in a scene of continuously sending packets when a high-speed serial bus transmits a variable-length message protocol can be effectively solved.

Aspects of the present disclosure provide various apparatuses and techniques for coalescing data packets. An apparatus can combine multiple data packets together into a large, coalesced frame to reduce processing overhead. An apparatus can coalesce data packets into a coalesced frame based at least in part on dynamically determined coalescing efficiency. The apparatus can change or adjust the value of the dynamically determined coalescing efficiency based on various real-time conditions and requirements. Instead of operating at a fixed coalescing efficiency, the apparatus can continuously determine and update the coalescing efficiency based on a coalescing efficiency threshold.

The application discloses a direct current carrier communication system in the form of a direct current bridge, which comprises a plurality of carrier communication modules, each of which is arranged on a power bus of a zero-carbon building and connected with a power generation system and a main power consumption system of the zero-carbon building, and a direct current bridge is established between the carrier communication modules on different power buses through a direct current carrier information flow; each carrier communication module comprises a CPU module, a power module, a storage module and a communication function module, the power module is connected with the power generation system of the zero-carbon building, and the communication function module comprises a channel estimation unit, a filtering unit, a spectrum sensing unit and a packet aggregation unit. By designing the carrier communication module to cooperate with the power bus of the zero-carbon building to establish a power bridge, the control form is flexible, and the adaptability to the zero-carbon building is high.

The invention provides a network security slice data storage method and system in enterprise operation, and relates to the technical field of computer data storage and management.The method comprises the steps that a data stream generated by enterprise operation is received, the service type and priority information in the data stream are recognized, service associated data packets are aggregated into a data slice unit, and the data slice unit is stored; and adding a feature identifier containing a service feature and an expected processing path to each unit. And then obtaining a load and network connection state of the distributed storage cluster, and evaluating a storage position of each data slice unit in combination with an expected processing path and service characteristics of the characteristic identifier. The method comprises the following steps: firstly, evaluating storage positions of all units, then storing all the units to corresponding nodes according to the evaluated storage positions, establishing a distributed index directory for the data slicing units of all the storage nodes, and adjusting the classification hierarchy and the detailed degree of the index directory according to the data access frequency, so that distributed storage and efficient management of enterprise operation data can be realized.