Patents by Inventor Xiapu LUO
Xiapu LUO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10193910Abstract: It is described a network attack detection method. A topology analysis on network is conducted to obtain a probing path set containing at least one probing path. A first probing path contained in the probing path set is probed by using a probing pattern to obtain a performance metric of the first probing path. It is determined whether the first probing path is subjected to network attack according to the performance metric and a control performance metric.Type: GrantFiled: December 8, 2017Date of Patent: January 29, 2019Assignees: The Hong Kong Polytechnic University, Tencent Technology (Shenzhen) Company LimitedInventors: Lei Xue, Zhiwei Liu, Xianneng Zou, Jingang Hou, Xiapu Luo, Edmond W. W. Chan, Pei Tu, Yuru Shao
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Patent number: 10178204Abstract: It is described an information processing method and device. It is received a request for service data from a client device. In response to the request for service data, it is sent at least two probing packets which contain the service data to the client device on a forward path which is from a server to the client device. It is obtained timing information, which includes: a time stamp corresponding to the service data, a time stamp corresponding to the request for the service data, and time stamps corresponding to at least two backward-path packets sent by the client device on a backward path, the backward path being from the client device to the server. It is determined according to the timing information a one-way path metric.Type: GrantFiled: March 27, 2015Date of Patent: January 8, 2019Assignees: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, THE HONG KONG POLYTECHNIC UNIVERSITYInventors: Xiapu Luo, Jingang Hou, Zhiwei Liu, Xianneng Zou, Juhong Wang, Lei Xue, Yajuan Tang, Weigang Wu
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Publication number: 20180103045Abstract: It is described a network attack detection method. A topology analysis on network is conducted to obtain a probing path set containing at least one probing path. A first probing path contained in the probing path set is probed by using a probing pattern to obtain a performance metric of the first probing path. It is determined whether the first probing path is subjected to network attack according to the performance metric and a control performance metric.Type: ApplicationFiled: December 8, 2017Publication date: April 12, 2018Inventors: Lei Xue, Zhiwei Liu, Xianneng Zou, Jingang Hou, Xiapu Luo, Edmond W. W. Chan, Pei Tu, Yuru Shao
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Patent number: 9876807Abstract: It is described a network attack detection method. A topology analysis on network is conducted to obtain a probing path set containing at least one probing path. A first probing path contained in the probing path set is probed by using a probing pattern to obtain a performance metric of the first probing path. It is determined whether the first probing path is subjected to network attack according to the performance metric and a control performance metric.Type: GrantFiled: April 16, 2015Date of Patent: January 23, 2018Assignees: The Hong Kong Polytechnic University, Tencent Technology (Shenzhen) Company LimitedInventors: Lei Xue, Zhiwei Liu, Xianneng Zou, Jingang Hou, Xiapu Luo, Edmond W. W Chan, Pei Tu, Yuru Shao
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Publication number: 20160119214Abstract: It is described an information processing method and device. It is received a request for service data from a client device. In response to the request for service data, it is sent at least two probing packets which contain the service data to the client device on a forward path which is from a server to the client device. It is obtained timing information, which includes: a time stamp corresponding to the service data, a time stamp corresponding to the request for the service data, and time stamps corresponding to at least two backward-path packets sent by the client device on a backward path, the backward path being from the client device to the server. It is determined according to the timing information a one-way path metric.Type: ApplicationFiled: March 27, 2015Publication date: April 28, 2016Inventors: Xiapu Luo, Jingang Hou, Zhiwei Liu, Xianneng Zou, Juhong Wang, Lei Xue, Yajuan Tang, Weigang Wu
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Publication number: 20160105453Abstract: It is described a network attack detection method. A topology analysis on network is conducted to obtain a probing path set containing at least one probing path. A first probing path contained in the probing path set is probed by using a probing pattern to obtain a performance metric of the first probing path. It is determined whether the first probing path is subjected to network attack according to the performance metric and a control performance metric.Type: ApplicationFiled: April 16, 2015Publication date: April 14, 2016Inventors: Lei Xue, Zhiwei Liu, Xianneng Zou, Jingang Hou, Xiapu Luo, Edmond W. W Chan, Pei Tu, Yuru Shao
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Patent number: 8885473Abstract: Disclosed is a method for achieving efficient and accurate measurement of path capacities of a communication network. The method includes the following steps: (a) transmitting a number of probes from a local node to a remote node over a forward network path, each probe contains at least one probe packet and can elicit the remote node to transmit a number of response packets to the local node over a reverse network path; (b) determine for each response packet a minimum round-trip packet delay between the time transmitting the probe and the time receiving the response packet; (c) calculate a number of pair-wise minimum delay differences from the minimum round-trip packet delays. The number of pair-wise minimum delay differences can be used as a measurement of the forward capacity, reverse capacity, faster-path capacity, slower-path capacity and a degree of capacity asymmetry between the local node and the remote node.Type: GrantFiled: November 29, 2012Date of Patent: November 11, 2014Assignee: The Hong Kong Polytechnic UniversityInventors: Edmond W. W. Chan, Xiapu Luo, Rocky K. C. Chang
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Patent number: 8531952Abstract: A method for achieving fast and efficient measurement of path capacity of a communication network. The method includes the following steps: (a) transmitting a number of probes from a local endpoint to a remote endpoint over a network path and each probe contains at least two outgoing packets and each probe can elicit at least two response packets from the remote endpoint; (b) determining a first minDelay by measuring RTT between the time sending the first probe packet and the time receiving the first response packet; (c) determining a second minDelay by measuring RTT between the time sending the second probe packet and the time receiving the second response packet; and (d) determining a minimum delay difference by subtracting said first minDelay from said second minDelay. The minimum delay difference divided by packet size can be used as a measurement of the network path capacity.Type: GrantFiled: November 30, 2009Date of Patent: September 10, 2013Assignee: The Hong Kong Polytechnic UniversityInventors: Edmond W. W. Chan, Xiapu Luo, Rocky K. C. Chang
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Publication number: 20130044625Abstract: A method and apparatus for measuring network path quality in a non-cooperative manner, which involves sending a probe consisting of a plurality of probe data packets to a remote node and receiving a response consisting of at least one response data packet therefrom. Both the probe and response data packets carry application messages and are exchanged according to normal transmission mechanisms, so that the method can void the reliability problem suffered by methods using non-data probes. The response data packets, at the same time, provide sufficient information for obtaining a rich set of data-path quality metrics in an efficient way.Type: ApplicationFiled: October 22, 2012Publication date: February 21, 2013Inventors: Xiapu Luo, Edmond Wun-Wah Chan, Rocky Kow-Chuen Chang
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Publication number: 20110128864Abstract: A method for achieving fast and efficient measurement of path capacity of a communication network. The method includes the following steps: (a) transmitting a number of probes from a local endpoint to a remote endpoint over a network path and each probe contains at least two outgoing packets and each probe can elicit at least two response packets from the remote endpoint; (b) determining a first minDelay by measuring RTT between the time sending the first probe packet and the time receiving the first response packet; (c) determining a second minDelay by measuring RTT between the time sending the second probe packet and the time receiving the second response packet; and (d) determining a minimum delay difference by subtracting said first minDelay from said second minDelay. The minimum delay difference divided by packet size can be used as a measurement of the network path capacity.Type: ApplicationFiled: November 30, 2009Publication date: June 2, 2011Inventors: Edmond W.W. Chan, Xiapu Luo, Rocky K.C. Chang
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Publication number: 20100315958Abstract: A method and apparatus for measuring network path quality in a non-cooperative manner, which involves sending a probe consisting of a plurality of probe data packets to a remote node and receiving a response consisting of at least one response data packet therefrom. Both the probe and response data packets carry application messages and are exchanged according to normal transmission mechanisms, so that the method can void the reliability problem suffered by methods using non-data probes. The response data packets, at the same time, provide sufficient information for obtaining a rich set of data-path quality metrics in an efficient way.Type: ApplicationFiled: June 11, 2009Publication date: December 16, 2010Inventors: Xiapu LUO, Edmand Wun-Wah Chan, Rocky Kow-Chuen Chang