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153 results about "Bandwidth measurement" patented technology
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Bandwidth Measurement
Methods for testing network bandwidth availability in a non-intrusive manner. By implementing occasional, base-line bandwidth testing, a more accurate indication of actual transfer rate results. When an application dependent upon network bandwidth is first executed, a series of file transfers takes place utilizing a series of different sized pieces of content.
Owner:SEVEN NETWORKS INC
Fast dynamic measurement of bandwidth in a TCP network environment
InactiveUS20050108420A1Quick measurementDisabling applicationMultiple digital computer combinationsData switching networksCountermeasureSlow-start
The fast dynamic measurement of bandwidth in a TCP network environment utilizes a single pair of packets to calculate bandwidth between two entities on a network (such as the Internet). This calculation is based upon the packet-pair technique. This bandwidth measurement is extremely quick. On its journey across a network, communication devices may delay the packet pairs. In particular, TCP networks have two algorithms designed to delay some packets with the goal of increasing the overall throughput of the network. However, these algorithms effectively delay a packet pair designed to measure bandwidth. Therefore, they distort the measurement. These algorithms are Nagle and Slow Start. The fast dynamic measurement of bandwidth implements countermeasures to overcome the delays imposed by these algorithms. Such countermeasures include disabling the application of the Nagle Algorithm; minimizing the buffering of packets by sending a “push” packet right after the packet pair; and avoiding the Slow Start Algorithm by priming it with a dummy packet.
Owner:MICROSOFT TECH LICENSING LLC
Internet service node incorporating a bandwidth measurement device and associated methods for evaluating data transfers
InactiveUS7424526B1Improve data transfer rateEasy to solveError preventionTransmission systemsTTEthernetComputer terminal
The present invention is directed to a intranet for providing on-demand Internet access to subscribers which includes a service node and a plurality of subscriber terminals coupled to the service node by corresponding xDSL lines. In turn, the service node includes a switch coupled to the xDSL lines, a gateway coupled to the Internet, a router which couples the switch to the gateway and a bandwidth measurement server coupled to the gateway. The bandwidth measurement server determines upload and / or download data transfer rates between the service node and requesting ones of said the subscriber terminals coupled thereto.
Owner:T MOBILE INNOVATIONS LLC
Staged, slowly-started transmission control method based on measurement of network state
InactiveCN101094047AEffectively get statusNot easy to shieldError prevention/detection by using return channelCongestion windowLoss rate
Via real time online bandwidth measurement, this method confirms the threshold value ssthresh. When the congestion window (CW) is less than a half of the threshold, the rule of exponent gain is followed. Otherwise CW gains each time a value of a half of difference of the threshold and CW (ssthresh-cwnd) to approach gradually the threshold. Until the difference is less than the regulation factor phi (ssthresh / 2>= phi >=2). Then CW is set as the threshold value to enter the stage of avoiding congestion. This invention can reduce the happening of loss of several texts in a window at the slowly start stage, reduce the package loss rate and raise the net transferring ability.
Owner:NAT UNIV OF DEFENSE TECH
Fast dynamic measurement of bandwidth in a TCP network environment
InactiveUS7266613B1Quick measurementDisabling applicationMultiple digital computer combinationsData switching networksSlow-startCountermeasure
The fast dynamic measurement of bandwidth in a TCP network environment utilizes a single pair of packets to calculate bandwidth between two entities on a network (such as the Internet). This calculation is based upon the packet-pair technique. This bandwidth measurement is extremely quick. On its journey across a network, communication devices may delay the packet pairs. In particular, TCP networks have two algorithms designed to delay some packets with the goal of increasing the overall throughput of the network. However, these algorithms effectively delay a packet pair designed to measure bandwidth. Therefore, they distort the measurement. These algorithms are Nagle and Slow Start. The fast dynamic measurement of bandwidth implements countermeasures to overcome the delays imposed by these algorithms. Such countermeasures include disabling the application of the Nagle Algorithm; minimizing the buffering of packets by sending a “push” packet right after the packet pair; and avoiding the Slow Start Algorithm by priming it with a dummy packet.
Owner:MICROSOFT TECH LICENSING LLC
System and method for delivery of broadband content
InactiveUS20050044260A1Efficient downloadEffective displayTelevision system detailsColor television detailsMass storageNetwork connection
A system for efficiently downloading a page of broadband content includes a mass storage device, a bandwidth measurement device, a download manager, and a presentation manager. The bandwidth measurement device determines the bandwidth of a network connection over which the content file will be downloaded by the system. The download manager retrieves and stores in the mass storage device a portion of the content file, the size of the portion determined responsive to the bandwidth determination made by the bandwidth measurement device. The presentation manager retrieves the stored portion of the content file from mass storage and displays the portion using a standard media player application.
Owner:VERIZON PATENT & LICENSING INC +1
Mobile WIFI network monitor
InactiveUS20070259670A1Network topologiesRadio/inductive link selection arrangementsWifi networkClient-side
A system for determining bandwidth in a hotspot is provided. The system includes a handset having an analyzer client operable to measure a bandwidth in the hotspot and a time and a location data related to the bandwidth measurement and an analyzer server operable to maintain the bandwidth, time, and location data received from the advisor client.
Owner:SAMSUNG ELECTRONICS CO LTD
Data replication with dynamic compression
ActiveUS20140237201A1Input/output to record carriersDatabase distribution/replicationNetwork connectionData store
A method for replicating data between two or more network connected data storage devices, the method including dynamically determining whether to compress data prior to transmitting across the network based, at least in part, on bandwidth throughput between the network connected data storage devices. If it has been determined to compress the data, the method involves compressing the data and transmitting the compressed data over the network. If it has been determined not to compress the data, the method involves transmitting the data, uncompressed, over the network. Dynamically determining whether to compress data may include comparing bandwidth measurements with a predetermined policy defining when compression should be utilized. In some embodiments, the policy may define that compression should be utilized when an estimated time for compressing the data and transmitting the compressed data is less than an estimated time for transmitting the data uncompressed.
Owner:DELL INT L L C
Midstream Determination of Varying Bandwidth Availability
InactiveUS20060168295A1Improve transfer rateVoltage-current phase angleMultiple digital computer combinationsIntermediate frequencyBandwidth availability
Systems and methods for midstream determination of varying available bandwidth for streaming content between two network entities are described. During content streaming, a client requests a server to surge the content transmission rate. One or more bandwidth measurements are taken during the surge to determine if the increased transmission rate can be adequately managed. If the increased transmission rate can be adequately managed, the client may request the server to transmit remaining content at a transmission rate that is not greater than the increased, or surged, transmission rate. In a multi-bitrate file scenario, the surge rate may be higher than the rate of the fastest useable stream. In such a case, the fastest useable stream is selected. If the increased transmission rate is not suitable for future transmission, then the rate may remain at the original transmission rate.
Owner:MICROSOFT TECH LICENSING LLC
Internet service node incorporating a bandwidth measurement device and associated methods for evaluating data transfers
InactiveUS7969987B1Time-division multiplexMultiple digital computer combinationsTTEthernetData transport
The present invention is directed to an intranet for providing on-demand Internet access to subscribers which includes a service node and a plurality of subscriber terminals coupled to the service node by corresponding xDSL lines. In turn, the service node includes a switch coupled to the xDSL lines, a gateway coupled to the Internet, a router which couples the switch to the gateway and a bandwidth measurement server coupled to the gateway. The bandwidth measurement server determines upload and / or download data transfer rates between the service node and requesting ones of said the subscriber terminals coupled thereto.
Owner:T MOBILE INNOVATIONS LLC
High-efficiency single-end available bandwidth measuring method
InactiveCN102045219AHigh measurement accuracyFast measurementData switching networksRate of convergenceBandwidth measurement
The invention relates to a high-efficiency single-end available bandwidth measuring method (pathpider) which comprises the following steps: a transmitting end transmits a specific probe packet train to a destination node; the transmitting end calculates a series of round trip time delay (RTT) values in accordance with a series of ICMP (Internet Control Message Protocol) packets returned by the destination node, and determines the time when the round trip time delay starts to remain constant; and the transmitting end calculates the average transmission rate of the packet train within the time period from the time when the packet train starts to be transmitted to the time when the round trip time delay starts to remain constant, and uses the average transmission rate as the measured value of the available bandwidth of the path. The invention can realize single-end available bandwidth measurement based on the novel probe packet train, and the available bandwidth value can be measured by only transmitting the probe packet train once. Thus, the invention has the advantages of high measurement accuracy, high convergence speed, low invasion degree and high robustness.
Owner:TONGJI UNIV
Methods and systems for bandwidth protection
InactiveUS20090175191A1Error preventionFrequency-division multiplex detailsPacket loss rateComputer science
Presented are methods and systems for providing bandwidth estimation and correction in a communications network. Bandwidth estimation and correction can include calculating a round trip time (RTT) value and a packet loss rate (PLR) value for each packet of a set of packets transmitted at different points in time from a server to a client terminal over the communications network; determining a bandwidth estimate based on the RTT and PLR values for the set of packets transmitted; determining a bandwidth measurement based on the RTT and PLR values for the set of packets; and determining a corrected bandwidth estimate based on the bandwidth estimate and the bandwidth measurement.
Owner:IND TECH RES INST
Methods and systems for bandwidth measurement techniques
ActiveUS20090016240A1Error preventionFrequency-division multiplex detailsNetwork connectionArrival time
The present invention relates to systems, apparatus, and methods of measuring bandwidth of a network connection. The method includes establishing a network connection between a sending terminal and a receiving terminal. The method further includes inserting a flag into a packet header for a packet. The flag is to indicate to the receiving terminal that a bandwidth measurement is in progress. The packet also includes a payload. The method further includes setting the flag in the packets header of the packet to true, and transmitting to the receiving terminal the packet. The method then sums arrival times of the packet and the payload for the packet, and calculates the bandwidth measurement of the network connection by dividing the summed payload value by the summed arrival times value.
Owner:VIASAT INC
System and method for delivery of broadband content with integrated interactive elements
InactiveUS20050034153A1Efficient downloadEffective displayTelevision system detailsColor television detailsMass storageNetwork connection
A system for efficiently downloading a page of broadband content includes a mass storage device, a bandwidth measurement device, a download manager, and a presentation manager. The bandwidth measurement device determines the bandwidth of a network connection over which the content file will be downloaded by the system. The download manager retrieves and stores in the mass storage device a portion of the content file, the size of the portion determined responsive to the bandwidth determination made by the bandwidth measurement device. The presentation manager retrieves the stored portion of the content file from mass storage and displays the portion using a standard media player application.
Owner:VERIZON PATENT & LICENSING INC +2
An end-to-end throughput measuring method and device
InactiveCN101242321ADoes not affect normal forwardingData switching networksEnd to end throughputBandwidth measurement
The invention provides an end-to-end flux measurement method, comprising: a sending exchange receives a data message of a pending measurement user, and acquires the test message at a test port, wherein the test message takes with an identification of the pending measurement user; when the bandwidth occupied by the data message of the pending measurement user is less than an appointed speed of a pending measurement flux, the exchange transmits the data message and test message of the pending measurement user at an output port to make the total bandwidth occupied by the data message and the test message equal to the appointed speed of a pending measurement flux and to make the test message transmit in a priority lower than that of the data message; a receiving exchange receives and accounts the total bandwidth occupied by the data message and the test message of the pending measurement user at an input port based on the identification of the pending measurement user as an end to end actual flux bandwidth. The invention further provides a sending exchange and a receiving exchange for an end to end flux measurement. The invention can achieve an end to end flux bandwidth measurement in a condition without breaking the user data message.
Owner:NEW H3C TECH CO LTD
Using an SDN controller to automatically test cloud performance
A method and associated systems for using a software-defined network (SDN) controller to automatically test cloud performance. A bandwidth measuring and optimizing system associated with the SDN controller detects a triggering condition and, in response, directs a network-management tool to measure a bandwidth of a segment of a physical infrastructure of a network and directs the SDN controller to provision a virtual machine that then measures a bandwidth of a corresponding segment of virtual infrastructure that is overlaid upon the physical segment. In some embodiments, these two tests are synchronized so as to concurrently measure physical and virtual bandwidths while the same test data passes through the virtual infrastructure segment. The measured bandwidth of the virtual segment is then compared to the measured bandwidth of the physical segment in order to determine an efficiency of the virtual network.
Owner:KYNDRYL INC
Systems and Methods for Measuring Available Bandwidth in Mobile Telecommunications Networks
InactiveUS20140056234A1Network traffic/resource managementWireless commuication servicesTelecom networkTimestamping
A network device receives probe packets communicated by a user equipment device. The network device communicates response packets back to the user equipment device, including timestamps, and / or other information. The user equipment device may be configured to test the performance of different portions of a wireless network (i.e., determine an available bandwidth measurement throughput (ABMT) of the wireless network) by accessing different network devices (or information associated with different network devices).
Owner:ASCOM NETWORK TESTING
Bandwidth measurement method and apparatus
The invention provides a method and a device for measuring bandwidth, wherein the method comprises the following steps: step S1, initializing a line bandwidth value as a bandwidth default value; step S2, periodically detecting the interface flow rate and recording the peak value of the interface flow rate, wherein the peak value of the interface flow rate is the maximum value of the interface flow rate detected from the initialization to the current moment; and step S3, adjusting the line bandwidth value according to the bandwidth default value, the current line bandwidth value and the peak value of the interface flow rate. The method records the maximum value of the interface flow rate detected from the initialization to the current moment, namely the peak value of the interface flow rate, and adjusts the line bandwidth value according to the bandwidth default value, the current line bandwidth value and the peak value of the interface flow rate, thus the adjustment of the line bandwidth does not independently depend on the peak value of the interface flow rate so as to avoid the problem that the actual bandwidth of a line cannot be characterized correctly because the bandwidth control is turned on so that the interface flow is suppressed.
Owner:BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
Method and device for online message flow monitoring and bandwidth compensation
InactiveCN101826999AReal-time monitoring bandwidth valueData switching networksTraffic capacityMessage flow
The invention discloses a device for online message flow monitoring and bandwidth compensation, which comprises a message identification module 102, a message storage module 103, a message scheduling module 104, a bandwidth measurement module 105 and an inserted message generation module 107. The invention additionally discloses a method for online message flow monitoring and bandwidth compensation. The technical scheme of the invention is that service messages required to be compensated are determined in real time on the transmission path of the service messages, the bandwidth of the service messages is measured in real time and whether compensation messages are inserted or not is determined according to measurement results. The invention has the advantages that the compensation / insertion of large bandwidth testing message flow can be realized; the long-term and large-quantity message compensation can be conducted; and the bandwidth value of the interested service message flow can be monitored in real time and thereby the threshold-configurable bandwidth difference value flow compensation function can be completed.
Owner:RAISECOM TECH
Systems and Methods for Measuring Available Bandwidth in Mobile Telecommunications Networks
A network device receives probe packets communicated by a user equipment device. The network device communicates response packets back to the user equipment device, including timestamps, and / or other information. The user equipment device may be configured to test the performance of different portions of a wireless network (i.e., determine an available bandwidth measurement throughput (ABMT) of the wireless network) by accessing different network devices (or information associated with different network devices).
Owner:ASCOM NETWORK TESTING
Method for redirection of web streaming clients using lightweight available bandwidth measurement from a plurality of servers
ActiveUS7451251B2The process is fast and accurateShort response timeMultiple digital computer combinationsSecuring communicationClient-sideBandwidth management
Owner:AT & T INTPROP II LP
Fast dynamic measurement of bandwidth in a TCP network environment
InactiveUS20050100014A1Disabling applicationMinimize bufferingData switching by path configurationCountermeasureSlow-start
The fast dynamic measurement of bandwidth in a TCP network environment utilizes a single pair of packets to calculate bandwidth between two entities on a network (such as the Internet). This calculation is based upon the packet-pair technique. This bandwidth measurement is extremely quick. On its journey across a network, communication devices may delay the packet pairs. In particular, TCP networks have two algorithms designed to delay some packets with the goal of increasing the overall throughput of the network. However, these algorithms effectively delay a packet pair designed to measure bandwidth. Therefore, they distort the measurement. These algorithms are Nagle and Slow Start. The fast dynamic measurement of bandwidth implements countermeasures to overcome the delays imposed by these algorithms. Such countermeasures include disabling the application of the Nagle Algorithm; minimizing the buffering of packets by sending a “push” packet right after the packet pair; and avoiding the Slow Start Algorithm by priming it with a dummy packet.
Owner:MICROSOFT TECH LICENSING LLC
Single end available bandwidth measurement method and terminal adopting same
ActiveCN104486163AShorten the time taken for measurementFast convergenceData switching networksTime delaysComputer science
The invention relates to a single end network available bandwidth measurement method and a terminal adopting the same. The method comprises the steps as follows: a sending end sends detection stream to a receiving end periodically according to two ends of a given to-be-measured available bandwidth, and the receiving end is forced to return information stream to the sending end continuously; the sending end judges the relation between the sending rate and the real available bandwidth according to change of one-way time delay of the received information stream; and the sending rate is adjusted step by step according to a judgment result until an error between the sending rate and the real available bandwidth is in an acceptable range, and the final measurement value of the available bandwidth is obtained. With implementation of the invention, single end network available bandwidth measurement can be performed between any two nodes on a network.
Owner:ZHENGZHOU SEANET TECH CO LTD
Method and apparatus for bandwidth measurement and bandwidth parameter calculation for laser light
A bandwidth meter method and apparatus for measuring the bandwidth of a spectrum of light emitted from a laser input to the bandwidth meter is disclosed, which may comprise an optical bandwidth monitor providing a first output representative of a first parameter which is indicative of the bandwidth of the light emitted from the laser and a second output representative of a second parameter which is indicative of the bandwidth of the light emitted from the laser; and, an actual bandwidth calculation apparatus utilizing the first output and the second output as part of a multivarible equation employing predetermined calibration variables specific to the optical bandwidth monitor, to calculate an actual bandwidth parameter. The apparatus and method may be implemented in a laser lithography light source and / or in an integrated circuit lithography tool.
Owner:CYMER INC
Online live broadcasting uploading method and system based on edge network polymerization
ActiveCN106790532AHigh upload bit rateImprove upstream bandwidthTransmissionSelective content distributionWi-FiNetwork link
The invention belongs to the field of network communication, and provides an online live broadcasting uploading method and system based on edge network polymerization. A video of a data source client can be transmitted to a network polymerization terminal, and the network polymerization terminal sends a request to a scheduling server; the scheduling server allocates an optimal polymerization server to the network polymerization terminal according to feedback information, network bandwidth measurement and the like of the network polymerization terminal and an original server; the network polymerization terminal transmits the video to the optimal polymerization server by at least one Wi-Fi and / or at least one LTE network link; and the optimal polymerization server transmits the video to the original server, and then the original server distributes the video to each data receiving side. By the online live broadcasting uploading method and system based on edge network polymerization, which are provided by the invention, transmission on mass data, i.e., bandwidth polymerization of the edge networks, by of a plurality of small-bandwidth edge networks is implemented, and scheduling is carried out according to different network link states, so that an uplink bandwidth is maximized.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Bandwidth measurement method and device, computer readable storage medium and computer equipment
ActiveCN109921962AImprove accuracyReduce resource consumptionData switching networksBroadbandObject identifier
The invention relates to a bandwidth measurement method and device, a computer readable storage medium and computer equipment. The method comprises the steps that an Internet protocol address corresponding to a to-be-detected object identifier is acquired; a user datagram protocol (UDP) message is sent to a user terminal corresponding to the Internet protocol address at an adjustable broadband rate, and the UDP message corresponding to the adjustable broadband rate is used for enabling a link between target network equipment corresponding to the to-be-detected object identifier to generate network congestion; when it is detected that the link is changed from the first network state to the second network state, the corresponding maximum broadband rate when the link is in the network available state is obtained, one of the first network state and the second network state is the network available state, and the other one is the network congestion state; and processing is realized according to the corresponding maximum broadband rate when the link is in the network available state to obtain the maximum available bandwidth of the link with the target network equipment. According to thescheme provided by the invention, the accuracy of bandwidth measurement can be improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Method and device for measuring available bandwidth by using mixed messages
InactiveCN101964727AReduce complexityImprove practicalityData switching networksPacket loss rateBandwidth measurement
The invention discloses a method for measuring available bandwidth by using mixed messages, which comprises the following steps: an active measuring end sends an internet control message protocol (ICMP) to a passive measuring end and accounts the network normal ICMP message packet loss rate of the passive measuring end; the active measuring end sends mixed messages to the passive measuring end and accounts the ICMP message average packet loss rate of the mixed messages of the passive measuring end and the active measuring end judges that the difference between the ICMP message average packet loss rate and the network normal ICMP message packet loss rate is greater than a preset packet loss rate threshold, the average speed of the passive measuring end receiving the mixed messages is accounted and used as the available bandwidth from the active measuring end to the passive measuring end. The invention also discloses a device for measuring available bandwidth by using mixed messages. The method and the device can be used for reducing the complexity of bandwidth measurement.
Owner:深圳市恒程汇文化科技有限公司
SDN (Software Defined Network) network abnormality monitoring method
ActiveCN107070714ANo need to visitMeasuring Path DelayData switching networksNetwork conditionsNetwork topology
The invention relates to a SDN (Software Defined Network) network abnormality monitoring method. An operation condition of a network path is analyzed in two aspects of delay and an available bandwidth of the path, and the abnormal path is detected and alarmed so as to ensure normal operation of the network path. The SDN network abnormality monitoring method adopts four functional modules: a network topology management module, a path delay measurement module, a path available bandwidth measurement module and a path abnormality monitoring module. According to the SDN network abnormality monitoring method disclosed by the invention, not only can delay and the available bandwidth of the network path be effectively measured, but also a path abnormal condition generated in the network transmitting process can be timely found and an alarm signal can be sent out. The SDN network abnormality monitoring method, under both network conditions of continuous network traffic and varied network traffic, can effectively complete abnormality monitoring on the network path and the measurement work on performance parameters.
Owner:NAT UNIV OF DEFENSE TECH
Methods and apparatus for bandwidth measurement and bandwidth parameter calculation for laser light
Owner:CYMER INC
Optical signal-to-noise ratio (OSNR) test method and device
ActiveCN104243019AReliable OSNRTransmission monitoring/testing/fault-measurement systemsSuper-channelSignal-to-noise ratio (imaging)
The invention provides an optical signal-to-noise ratio (OSNR) test method. The method includes: determining the number of subcarriers in multi-subcarrier multiplexing super channels and measuring central wavelength and effective bandwidth of the subcarriers; subjecting each subcarrier to OSNR measurement which includes that the OSNR of the subcarrier is measured in the effective bandwidth at the central wavelength location, and the effective bandwidth is the effective bandwidth acquired during performing the effective bandwidth measurement on the subcarrier; acquiring the multi-subcarrier multiplexing super channels according to the OSNRs of the subcarriers and the number of the subcarriers acquired in measurement. On the basis of the method, the invention further provides an OSNR test device. By the method and the device, the reliable OSNRs of the multi-subcarrier multiplexing super channels can be acquired.
Owner:CHINA ACADEMY OF INFORMATION & COMM
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