67 results about "Packet segmentation" patented technology

The present invention provides a method of high speed assemble process capable of dealing with long packets with effective buffer memories usage. A processing method of fragmented packets in packet transfer equipment for transmitting and receiving packet data between terminals through network, includes, receiving fragmented packets, identifying whether the received packet is a packet fragmented into two from original, or a packet fragmented into three or more, for the packet identified as fragmented into two, storing the two fragmented packets into assembly buffer in fragmentation order, on basis of the respective offset values in the packets, and reading out from top, and for the packet fragmented into three or more, chain-connecting the assembly buffers and storing the packets therein in reception order, reading out the packets after deciding the order by comparing chain information and offset values of the fragmented packets within the chain, and then reassembling the packets.

The present invention provides a method of high speed assemble process capable of dealing with long packets with effective buffer memories usage. A processing method of fragmented packets in packet transfer equipment for transmitting and receiving packet data between terminals through network, includes, receiving fragmented packets, identifying whether the received packet is a packet fragmented into two from original, or a packet fragmented into three or more, for the packet identified as fragmented into two, storing the two fragmented packets into assembly buffer in fragmentation order, on basis of the respective offset values in the packets, and reading out from top, and for the packet fragmented into three or more, chain-connecting the assembly buffers and storing the packets therein in reception order, reading out the packets after deciding the order by comparing chain information and offset values of the fragmented packets within the chain, and then reassembling the packets.

The present invention provides a multi-service queuing method and apparatus that provides exhaustive arbitration, load balancing, and support for rapid port failover. Routers and switches according to the present invention can instantaneously direct the flow of traffic to another port should there be a failure on a link, efficiently handle multicast traffic and provide multiple service classes. The fabric interface interfaces the switch fabric with the ingress and egress functions provided at a network node and provides virtual input and output queuing with backpressure feedback, redundancy for high availability applications, and packet segmentation and reassembly into variable length cells. The user configures fixed and variable-length cells. Virtual input and output queues are coupled to a switch fabric. Statistics regarding the virtual input and output queues are collected and packet queuing for the virtual input and output queues is controlled using the collected statistic to provide congestion control for the virtual input and output queues and the switch fabric.

Certain aspects of the invention for packet segmentation and offload may comprise determining whether an identified packet is a large send offload packet (LSOP). If the identified packet is a LSOP, a selection may be made between a hardware process and a firmware process for handling the LSOP. The LSOP may then be processed by the selected hardware process or firmware process. At least a portion of protocol header information for a first segment of the LSOP may be stored and subsequently utilized for at least a header portion of a second segment of the LSOP. A payload corresponding to the second segment of the LSOP may be placed at a determined offset within a transmit buffer for the second segment. A header portion of the second segment may be updated based on at least a header portion of a previous segment.

The invention relates to a data packet structure for conveying data of service data units (SDU) using protocol data units (PDU). The data packet comprise a data packet payload comprising at least one protocol data unit (PDU), wherein a protocol data unit (PDU) comprises a service data unit (SDU) or a fragment of a service data unit; and a data packet header comprising an indicator (FFF, SFF) indicating whether or not the data packet payload begins with a protocol data unit (PDU) being a fragment of a service data unit and whether or not the data packet payload ends with a protocol data unit (PDU) being a fragment of a service data unit.

A rule-based selection, storage and access method and system for processing packets from network traffic. First, packet intercepted from network traffic are selected based on at least one rule. Second, the selected packets are stored in an in-kernel storage buffer, which can be tuned to a size that is appropriate to the number packets being captured and the ability of a packet usage application (e.g., a billing program) to process the packets. Third, an access mechanism is provided to a packet usage application for accessing the stored packets. The intercepted network traffic is provided to a receiving application.

Methods and apparatus are described for providing multiple transmission bandwidth streams with differentiated quality of service on a inter-machine trunk. One approach includes time-division multiplexing. Another approach includes statistical multiplexing. Another approach includes packet segmentation. The approaches are commercially important because they significantly reduce time-delay variation.

In one embodiment, to determine what tasks may be offloaded to a peripheral hardware device (e.g., to be performed in hardware on the peripheral device, rather than on the CPU(s) of the host computer), an indication from the at least one peripheral hardware device may be provided, without the peripheral hardware device first being queried to determine the task offload capabilities provided by the peripheral hardware device. The peripheral hardware device may be capable of handling multiple task offloads on the same packet. For example, the peripheral device may be capable of performing large packet segmentation and encryption on the same packet. The peripheral device may also be capable of performing encryption and checksum calculation on the same packet.

The invention relates to a data packet structure for conveying data of service data units (SDU) using protocol data units (PDU). The data packet comprise a data packet payload comprising at least one protocol data unit (PDU), wherein a protocol data unit (PDU) comprises a service data unit (SDU) or a fragment of a service data unit; and a data packet header comprising an indicator (FFF, SFF) indicating whether or not the data packet payload begins with a protocol data unit (PDU) being a fragment of a service data unit and whether or not the data packet payload ends with a protocol data unit (PDU) being a fragment of a service data unit.

The present invention provides a method and apparatus to route data packets across a torus or higher radix topology that has low latency, increased throughput and traffic distribution to avoid hot spots development. Disclosed is a method of routing packets in a distributed direct interconnect network from a source node to a destination node comprising the steps of: discovering all nodes and associated ports; updating the database to include the nodes and ports in the network topology; calculating the shortest path from every output port on each node to every other node in the topology; segmenting each packet into flits at the output port of the source node; as the flits are segmented, distributing said flits along the shortest path from each output port on the source node to the destination node using wormhole switching, whereby the packets are distributed along alternate maximum disjoint routes in the network topology; and re-assembling and re-ordering the packets at the destination node so that the packets accord with their original order / form.

Automated techniques reduce packet fragmentation in a communications network environment, including a networking environment that uses tunnels. In a tunneling environment, a tunnel endpoint evaluates whether tunnel processing for an outbound packet will cause the packet to exceed a particular size such as a message transmission unit (“MTU”) size, which in turn would lead to error processing and / or fragmentation of the packet. Similar MTU and packet mismatch may occur in a system across the virtual machine and the hypervisor, a networking stack and the physical MTU possible on the network. If so, the tunnel endpoint or the network driver simulates an error condition and returns an error message to the protocol stack that prepared the packet, so that the packet size can be reduced before the packet is actually sent on the tunnel. Existing functionality is leveraged to perform the size reduction, thus obviating the need for administrator intervention.

The invention provides a data package segmented encryption and transmission processing method and device. The data package segmented encryption and transmission processing method comprises a step of carrying out data package transmission processing on a medium access control layer: at first, carrying out segment preprocessing on a data package according to data package configuration information and a segment threshold value; then configuring desired control data for a first segment in an encrypted manner before sending the first segment; when the pre-set processing of sending each segment is executed, encrypting the current segment, and sending the previous segment and configuring the control data needed by encrypting the next segment simultaneously; and repeatedly executing the above steps so as to send the single segmented one by one, so that the entire data package is encrypted, transmitted and processed in a segmented manner. With the adoption of the data package segmented encryption and transmission processing method and device provided by the invention, the storage space and the time of transmitting and processing the data package can be saved, and the efficient transmission processing of sending the data package in the segmented manner can be ensured.

The present invention provides a method of high speed assemble process capable of dealing with long packets with effective buffer memories usage. A processing method of fragmented packets in packet transfer equipment for transmitting and receiving packet data between terminals through network, includes, receiving fragmented packets, identifying whether the received packet is a packet fragmented into two from original, or a packet fragmented into three or more, for the packet identified as fragmented into two, storing the two fragmented packets into assembly buffer in fragmentation order, on basis of the respective offset values in the packets, and reading out from top, and for the packet fragmented into three or more, chain-connecting the assembly buffers and storing the packets therein in reception order, reading out the packets after deciding the order by comparing chain information and offset values of the fragmented packets within the chain, and then reassembling the packets.

Certain aspects of the invention for packet segmentation and offload may comprise determining whether an identified packet is a large send offload packet (LSOP). If the identified packet is a LSOP, a selection may be made between a hardware process and a firmware process for handling the LSOP. The LSOP may then be processed by the selected hardware process or firmware process. At least a portion of protocol header information for a first segment of the LSOP may be stored and subsequently utilized for at least a header portion of a second segment of the LSOP. A payload corresponding to the second segment of the LSOP may be placed at a determined offset within a transmit buffer for the second segment. A header portion of the second segment may be updated based on at least a header portion of a previous segment.

An apparatus and method for selecting and recording multi-directional communication packet traffic in a compact manner in realtime while maintaining relative time between the selected packets passing in one direction and the selected packets passing in another direction. The apparatus includes a protocol interface, a block datapath, a record resource, and a trace merge memory. The protocol interface receives X and Y channel packets with interspersed idle times, segments the packets into time-aligned X and Y blocks, and eliminates idle times. The block datapath merges the X and Y blocks, then filters unneeded X and Y channel packets by purging the X and Y blocks from those packets. The record resource compares patterns for identifying the unneeded packets and trigger events. The trace merge memory records the time-aligned filtered merged block stream in a compact form for later analysis.

A system and method for simulating network connection characteristics by alteration of a network packet. In general, the method of the invention includes providing a driver that is capable of accessing all outgoing and incoming network packets and altering a network packet to simulate a connection characteristic of the network. In particular, the method of the invention includes receiving a network packet, assigning a new, simulated network address to the network packet and performing modification of the network packet to simulate certain network connection characteristics (including, for example, transmission delay, limited bandwidth, packet dropping, packet fragmentation, packet duplication and packet reordering). The system of the invention includes a modification module for altering certain characteristics of a packet. The modification module is capable of mapping a new, simulated network address to a network packet, modifying a propagation characteristic of the network connection, and altering an additional packet characteristic.

The invention discloses a method and system for non-confirmed mode data transmission. The method comprises following steps: transmitting side establishes wireless logic channel information queue, performs segmental package for upper layer data packet according to bandwidth allocated by MAC layer, sends RLC PDU constituted by data packet fragment to MAC layer; receiving side establishes wireless loading logic channel information queue corresponding to the transmitting side, and checks the legality of the RLC PDU received from MAC layer, unpacks or un-segments to data packet fragment resolved from legal RLC PDU, discards data packet fragment unable to be recombined, submits the complete data packet to upper layer. The invention provides concrete implementing method for non-confirmed transmission mode.

The invention discloses a system for realizing sub network dependent convergence protocol, which comprises a module initiation unit, a module mapping unit, a data processing module, a data resolving unit and a data transmitting unit, wherein, the module initiation unit is used for establishing a protocol management module and a plurality of SAPI examples when modules are initialized, and establishing a logical link for the SAPI examples; the module mapping unit is used for establishing NSAPI examples and establishing the logical link for the NSAPI examples when receiving activation indication, establishing mapping relationship between the SAPI examples and the NSAPI examples and storing the mapping relationship between the SAPI examples and one or more NSAPI examples in the protocol management module; the data processing module is used for compressing a first data packet from an application layer and dividing the compressed first data packet into a plurality of parts; the data resolving unit is used for resolving the SAPI examples which corresponds to and is used for identifying the NSAPI examples of the data packet from the application layer from the first data packet; the data transmitting unit is used for transmitting a plurality of parts of the compressed first data packet to a peer layer by the logical link of the SAPI examples which corresponds to and is used for identifying the NSAPI examples of the first data packet.

The invention provides a malicious traffic detection method integrating a deep neural network and a hierarchical attention mechanism, which comprises the following steps: S1, acquiring original traffic data, and storing the acquired original traffic data as traffic data in a recognizable file format; S2, performing feature conversion on the traffic data stored in the step S1; S3, performing data packet segmentation on the traffic data converted in the step S2 to obtain data packet segments; S4, capturing feature information between the data packet segments through a time sequence processing feature vector; S5, performing allocation to obtain an attention vector; S6, performing feature fusion on the traffic data; S7, performing linear transformation on the features fused in the step S6; andS8, classifying the traffic data. According to the invention, malicious traffic can be detected, and the performance is enhanced.

The invention discloses a method and a device for wireless data access. The method comprises the following steps: a mobile terminal transmits / receives data from / to a wireless access network device, wherein IP packet segmentation processing is performed on the data before data is transmitted according to 3GPP protocol through a radio frequency module, and the said data is the data in the data service; the wireless access network device receives the data transmitted by the wireless terminal through air interface according to 3GPP LTE protocol when receiving a data service request initiated by the wireless terminal, encapsulates the received data into IP packets, and transmits the packets to the Internet and / or a core network through data transmission interface. The invention provided by the invention can satisfy indoor and hotspot wideband wireless data requirements and effectively reduce cost overhead of data service, and provides telecommunication providers with a low-cost manner to split data service.

The invention discloses a realization method for improving the transmission performance of UTRAN HSUPA IP in a WCDMA system. The processing performance on a transmission layer is greatly influenced under the circumstance of uplink large flow rate in the protocol processing mode at present. In order to solve the problem, the invention comprises the following steps: firstly, a base station MAC-e entity sectionally sends an uplink data package with length larger than the length of a maximum transmission unit to a wireless network controller; secondly, the MAC-es entity of the wireless network controller regroups the received uplink data package sent by the MAC-e entity into an uplink data package to be sent to a MAC-d entity. The invention improves the processing performance of the system under the circumstance of large flow rate; and then the realization is relatively simple; in addition, the method proposed by the invention is provided with the expandability of the larger flow rate of a Uu port data in future.

The invention relates to an intelligent utility network transmission packet error rate measuring and calculating method for establishing a data packet collision model on the basis of the probability theory. The invention belongs to the technical field of information, relates to a method for calculating a wireless network data transmission packet error rate and solves the problem that when a plurality of interference sources start to send interference data packets in the transmitting process of expected data packets, due to uncertainty of a timing relation between the interference data packets and the expected data packets, an existing calculating method hardly gives the collision condition of the expected data packets and the interference data packets in each time period. According to the invention, one improved packet collision model is established by utilizing the probability theory principle; by segmenting the expected data packets according to the collision condition and then calculating an average length and a bit error rate of each segment, a packet error rate or an average packet error rate of an interfered node is obtained. The intelligent utility network transmission packet error rate measuring and calculating method is used for calculating the packet error rate in the SUN internal node interference regulated by the IEEE802.15.4g standard.

The invention discloses a simultaneous wireless information and power transfer method of a cooperative relay network based on fountain code packet segmentation. The method comprises the following five steps: a source node performs fountain coding for information and broadcasts fountain coding packets to a relay node and a destination node; the relay node monitors the own energy state or information decoding state; the relay node adaptively adjusts packet number segmentation parameters that are used for energy collection and data transmission according to the monitored own energy state value or information decoding state value; data that needs to be transmitted is forwarded to the destination node by using the energy collected by the relay node; and the destination node decodes the fountain coding packets separately from the source node and the relay node to restore signals. According to the simultaneous wireless information and power transfer method disclosed by the invention, the relay node can adaptively adjust the packet number segmentation parameters that are used for energy collection and data transmission according to the monitored own energy state value or information decoding state value, the problem of network energy limitation can be solved, and the transmission performance of the system can be improved.

The present invention provides a method and apparatus to route data packets across a torus or higher radix topology that has low latency, increased throughput and traffic distribution to avoid hot spots development. Disclosed is a method of routing packets in a distributed direct interconnect network from a source node to a destination node comprising the steps of: discovering all nodes and associated ports; updating the database to include the nodes and ports in the network topology; calculating the shortest path from every output port on each node to every other node in the topology; segmenting each packet into flits at the output port of the source node; as the flits are segmented, distributing said flits along the shortest path from each output port on the source node to the destination node using wormhole switching, whereby the packets are distributed along alternate maximum disjoint routes in the network topology; and re-assembling and re-ordering the packets at the destination node so that the packets accord with their original order / form.

MAC adaptation layer is introduced on data link layer of internal interface in interface unit and base band processing unit. The MAC adaptation layer comprises header of MAC adaptation layer and service data unit. The said header of MAC adaptation layer includes four fields: ID of link, message length ID, subsections ID of data packet and sequence number of subsection. Transmission service data include transmission data and receiving data. Advantages are high transmission efficiency and low processing spending. Comparing with prior art, the invention possesses features of simple processing mechanism and simplified program codes.

The invention discloses a method and a device for receiving data. The method comprises the following steps: an intelligent module carries out step-by-step jump type scanning according to a preset sequence and a preset time interval, and obtains message data, wherein the message data are the message data which are sent by a mobile terminal according to a preset packet segmentation manner; and the intelligent terminal recombines the message data according to an identifier, carried in the message data, of each packet, and decodes the message data according to an encryption factor in the message data. The intelligent module carries out the step-by-step jump according to a sequential mode and starts to lock a channel till a corresponding message exists; with such channel scanning manner, a channel finding time is greatly improved and the time for linking a network is increased.

The invention discloses a video transmission method and device, equipment and a medium, and the method comprises the steps: obtaining an image sequence, carrying out the real-time coding of the imagesequence based on a preset coding rate, and obtaining a corresponding key frame or coded frames so as to obtain a target frame group, wherein the target frame group comprises a key frame and a plurality of coded frames after the key frame; segmenting the acquired key frame or coded frames in real time based on a data packet segmentation length to obtain a plurality of data packets; filling the data packet with the data packet header information based on a preset data packet format to obtain a packaged data packet; and sending the packaged data packet to a receiving end based on a first presettime interval, so that the receiving end recombines the key frame and the coded frames based on the data packet header information of the packaged data packet to obtain a video picture. According to the method, H264 and H265 video stream transmission congestion, frame loss and the like can be improved in a poor network environment with large signal interference, weak signals and the like or a network environment with limited throughput.

A method to transcode an image in the form of an input bitstream. The input bitstream includes quality layers, each quality layer includes resolution levels, each resolution level includes components, each component includes regions, and each region includes a packet segmentation position, a header length, and a body length. The input bitstream is partially decoded to obtain the structure of the encoded input bitstream. Specify the coordinates of the region of interest in the image, and define step-by-step parameters. The partially decoded input bitstream is then encoded according to the structure, coordinates and stage parameters to obtain an encoded output bitstream.

In one exemplary aspect thereof the invention provides a method that operates to receive information through at least one input of a protocol layer packet segmentation unit and to dynamically vary packet segment size in accordance with the received information prior to transmission to a receiver. The information received through the at least one input may include information related to channel quality for a channel through which packet data are transmitted to the receiver. The information received through the at least one input may also be or may include information received from at least one of a higher protocol layer or a lower protocol layer.