41 results about "Network traffic measurement" patented technology

Traffic measurement should make it possible to obtain the spatial flow of traffic through the domain, i.e., the paths or trajectories followed by packets between any ingress and egress point of the domain. A method of sampling packet trajectories in a packet switching network allows the direct inference of traffic flows through a measurement domain by observing the trajectories of a subset of all packets traversing the network. A method which assumes that the measurement domain does not change comprises the steps of selecting packets for sampling in accordance with a sampling function of the packet content and generating a practically unique label for each sampled packet. The method does not rely on routing state, its implementation cost is small, and the measurement reporting traffic is modest and can be controlled precisely. Using the same hash function will yield the same sample set of packets in the entire domain, and enables us to reconstruct packet trajectories. An alternate embodiment which assumes no constraints and that the measurement domain may change comprises the steps of applying a sampling function and altering an invariant bit position as a signaling flag in each packet selected for sampling.

A system and method for measuring network performance include a first element in a network, the first element operable to receive a data packet and to create a clone packet based on the data packet, the clone packet having a destination the same as a destination of the data packet and having information identifying the clone packet as a clone, the first element operable to insert the clone packet into a data stream with the data packet.

The disclosed technology includes methods, systems, and computer readable media for optimizing network traffic management in a mobile network. One method includes determining, by a network optimization client of a mobile device, a packet call quality (PCQ) associated with transmission of packets between the mobile device and a mobile communications network. The PCQ includes a numerical indication of call quality. A congestion recognition (CR) module of the mobile device determines a measure of user congestion based on the PCQ that indicates a total delay experienced by a user of the mobile device during the transmission of packets.

A network-wide traffic measurement / analysis problem is formulated as a series of set-cardinality-determination (SCD) problems, using probabilistic distinct sample counting techniques to compute network-wide traffic measurements of interest in a distributed manner via the exchange of light-weight traffic digests (TD's) amongst network nodes / routers. A TD for N packets uses only requires O(loglog N) bits of memory storage, making it possible to distribute nodal TD's to all routers within a domain by piggybacking them as opaque data objects inside existing control messages, such as OSPF link-state packets (LSPs) or I-BGP control messages. A router receiving the TD's can estimate the traffic measurements of interest for each of its local links by solving a series of set-cardinality-determination problems. The traffic measurements of interest are typically per-link, per-traffic-aggregate packet (or flow) counts, where an aggregate is defined by the group of packets sharing the same originating and / or destination nodes (or links) and / or some intermediate nodes (or links).

The invention provides a balanced splitting system and method for network traffics. The system and the method are mainly used for solving the problem in the prior art that the increasing demand on network bandwidth is hard to meet due to the fact that the load of an initial traffic splitting node is too large and the overall performance is low. The system comprises a splitting unit, a balanced splitting unit and a receiving unit, wherein the splitting unit is used for receiving an original network traffic and carrying out source / destination-address-field-based coarse splitting on the network traffic; the balanced splitting unit is used for receiving coarse-split network traffics and carrying out session-based balanced splitting on the coarse-split network traffics; and the receiving unit is used for receiving finally-split traffics and carrying out further analytical processing on the finally-split traffics according to actual demands. According to the system and the method, the load of the initial traffic splitting node is reduced, the overall performance of the system is improved, and the efficiency of the distributed analysis and processing of the network traffics is favorably increased, so that the system and the method can be applied to the identification and intrusion detection of the network traffics.

The invention discloses a network traffic measurement method based on an RBF neural network. The network traffic measurement method based on the RBF neural network comprises the following steps in sequence: establishment of an RBF neural network model, normalization processing of network traffic data lines, a learning algorithm of the RBF neural network model, the training algorithm of the RBF neural network model and evaluation of performance of the RBF neural network model. According to the network traffic measurement method based on the RBF neural network, the traffic measurement model based on the RBF neural network is established to give out structural design of the RBF neural network and the learning algorithm based on orthogonal least squares, the RBF method is higher in prediction accuracy relative to a BP traffic prediction model, the RBF method can describe the change rules of network traffic quite well, and has the advantages of being strong in generalization ability and good in stability, and the method has high practical value in network traffic prediction.

The invention discloses a data center network flow measurement method based on SDN. First, a set of encoding flows is set for each switch, and then the switches of each data plane are encoded in one cycle to obtain the Flow Filter, Counting Table and Flow Vector, and then send the Flow Filter, Counting Table, and Flow Vector of all switches encoded in a cycle to the control plane decoding host for decoding, so as to measure the flow rate passing through each switch in the data center network in a cycle. The size of the traffic.

The invention discloses a remote power consumption control method, a system and a remote power consumption management server. The method includes: obtaining the preset control time of the user terminal for the power consumption equipment, and measuring the network delay between the user terminal and the power consumption management terminal; The sending time of the control command; when the sending time is reached, the control command is sent to the power consumption management terminal. The remote power consumption control method, the system and the remote power consumption management server of the present invention can more precisely control the power consumption equipment at regular intervals by measuring the network time delay, thereby improving user experience.

A data structure is provided for storing network contact information based on an array of physical memory locations. Virtual vectors are constructed for each source, wherein each element in each virtual vector is assigned to a corresponding physical memory location within the array. The physical memory locations are shared between the virtual vectors uniformly at random so that the noise introduced by sharing can be predicted and removed. A method for storing network contact information is also provided in which a hash function is performed using the address of a source host to find a virtual vector for holding information about the source host. A second hash function is performed using the address of a destination host to find a virtual memory location, within the virtual vector, for holding information about the destination host. Finally, information is stored at a physical memory location assigned to the virtual memory location. Estimation range enhancement is further provided by performing multiple estimations with different sampling probabilities and selecting a best estimation based on a maximum likelihood method.

The invention discloses a trusted video application method based on network measurement, relating to the technical field of the Internet. The trusted video application method is characterized in that a video service platform is built on the basis of a new generation of trusted Internet architecture, and safety and network measurement are integrated in one framework. According to the source address authentication technology, a trusted user is permitted to use the method to apply for certain high-performance applications at the platform and rejects unauthorized users; network measurement is carried out on a user subjected to source address verification, wherein the network measurement includes end-to-end link performance measurement and finer-granularity segmental measurement; and a network administrator can adopt a routing and resource adjusting strategy according to measurement results so as to satisfy the requirement of video application on link bandwidth and time delay. According to the trusted video application method, video application can be effectively applied and the reliability and the safety of the video application is ensured.