Patents by Inventor Zhimei Jiang
Zhimei Jiang 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: 9584468Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to an access network available to the mobile user at his location.Type: GrantFiled: October 19, 2015Date of Patent: February 28, 2017Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo Kim, Kin K. Leung, Hui Luo
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Publication number: 20160043992Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to an access network available to the mobile user at his location.Type: ApplicationFiled: October 19, 2015Publication date: February 11, 2016Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo Kim, Kin K. Leung, Hui Luo
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Patent number: 9167610Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to an access network available to the mobile user at his location.Type: GrantFiled: June 10, 2013Date of Patent: October 20, 2015Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J. Kim, Kin K. Leung, Hui Luo
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Patent number: 8893240Abstract: A Virtual Single Account (VSA) system and method that provides a mobile user with automatic authentication and connection to a remote network via local access networks with a single password, where the local access networks may be independent of the remote network. A mobile user has a single authentication credential for one VSA that is utilized by a VSA client installed on a mobile computing device. The VSA client provides for automatically authenticating and connecting the user's mobile device to a current local access network, and the target remote network such as the user's office network. All authentication credentials are encrypted using a key generated from the user's VSA password that is generated from the user's single password. The VSA client derives the key from the submitted VSA password and decrypts all authentication credentials that are required in order to connect the mobile device to the current local access network and thereafter to the office network.Type: GrantFiled: November 20, 2012Date of Patent: November 18, 2014Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Hui Luo, Frederick Kenneth Schmidt, Jr.
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Publication number: 20130265971Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to an access network available to the mobile user at his location.Type: ApplicationFiled: June 10, 2013Publication date: October 10, 2013Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J. Kim, Kin K. Leung, Hui Luo
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Patent number: 8462748Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to the “best” access network available to the mobile user at his location.Type: GrantFiled: July 1, 2010Date of Patent: June 11, 2013Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J Kim, Kin K Leung, Hui Luo
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Patent number: 8316424Abstract: A Virtual Single Account (VSA) system and method that provides a mobile user with automatic authentication and connection to a remote network via local access networks with a single password, where the local access networks may be independent of the remote network. A mobile user has a single authentication credential for one VSA that is utilized by a VSA client installed on a mobile computing device. The VSA client provides for automatically authenticating and connecting the user's mobile device to a current local access network, and the target remote network such as the user's office network. All authentication credentials are encrypted using a key generated from the user's VSA password that is generated from the user's single password. The VSA client derives the key from the submitted VSA password and decrypts all authentication credentials that are required in order to connect the mobile device to the current local access network and thereafter to the office network.Type: GrantFiled: July 28, 2010Date of Patent: November 20, 2012Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Hui Luo, Frederick Kenneth Schmidt, Jr.
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Patent number: 8065518Abstract: A fast authentication and access control method of authenticating a network access device to a communications network having an access point communicating with a remote authentication (home AAA) server for the network access device. The method includes the step of receiving an access request having an authentication credential from the network access device at the access point. The authentication credential includes a security certificate having a public key for the network access device and an expiration time. The security certificate is signed with a private key for the remote authentication server. The access point locally validates the authentication credential by accessing the public key of the remote authentication server from a local database, and checking the signature and expiration time of the security certificate.Type: GrantFiled: February 1, 2005Date of Patent: November 22, 2011Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Hui Luo
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Patent number: 7929528Abstract: An IP-based corporate network architecture and method for providing seamless secure mobile networking across office WLAN, home WLAN, public WLAN, and 2.5 G/3 G cellular networks for corporate wireless data users. The system includes Internet roaming clients (IRCs), a secure mobility gateway (SMG), optional secure IP access (SIA) gateways, and a virtual single account (VSA) server. The IRC is a special client tool installed on a mobile computer (laptop or PDA) equipped with a WLAN adaptor and a cellular modem. It is responsible for establishing and maintaining a mobile IPsec tunnel between the mobile computer and a corporate intranet. The SMG is a mobile IPsec gateway installed between the corporate intranet and the Internet. It works in conjunction with the IRC to maintain the mobile IPsec tunnel when the mobile computer is connected on the Internet via a home WLAN, a public WLAN, or a cellular network.Type: GrantFiled: September 30, 2008Date of Patent: April 19, 2011Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J Kim, Kin K Leung, Hui Luo, Nemmara K. Shankaranarayanan
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Publication number: 20100299523Abstract: A Virtual Single Account (VSA) system and method that provides a mobile user with automatic authentication and connection to a remote network via local access networks with a single password, where the local access networks may be independent of the remote network. A mobile user has a single authentication credential for one VSA that is utilized by a VSA client installed on a mobile computing device. The VSA client provides for automatically authenticating and connecting the user's mobile device to a current local access network, and the target remote network such as the user's office network. All authentication credentials are encrypted using a key generated from the user's VSA password that is generated from the user's single password. The VSA client derives the key from the submitted VSA password and decrypts all authentication credentials that are required in order to connect the mobile device to the current local access network and thereafter to the office network.Type: ApplicationFiled: July 28, 2010Publication date: November 25, 2010Applicant: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Hui Luo, Frederick Kenneth Schmidt, JR.
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Patent number: 7827584Abstract: A method and system that reduces the impact of packet loss on video data quality. Packet selection is performed by the method and system to selectively drop low priority packets so that the overall quality of the received video data may be improved. In one exemplary embodiment, the probability of higher priority layers being delivered on time is computed and a packet is transmitted only if this probability is greater than a given threshold h. In another exemplary embodiment, the system and method have the capability of backing up the process to transmit previously skipped packets, if time allows.Type: GrantFiled: December 9, 2008Date of Patent: November 2, 2010Assignee: AT&T Intellectual Property IIInventors: Zhimei Jiang, Leonard Kleinrock
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Patent number: 7823182Abstract: A method and system that reduces the impact of packet loss on video data quality. Packet selection is performed by the method and system to selectively drop low priority packets so that the overall quality of the received video data may be improved. In one exemplary embodiment, the probability of higher priority layers being delivered on time is computed and a packet is transmitted only if this probability is greater than a given threshold h. In another exemplary embodiment, the system and method have the capability of backing up the process to transmit previously skipped packets, if time allows.Type: GrantFiled: December 22, 1999Date of Patent: October 26, 2010Assignee: AT & T Intellectual Property IIInventors: Zhimei Jiang, Leonard Kleinrock
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Publication number: 20100265892Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to the “best” access network available to the mobile user at his location.Type: ApplicationFiled: July 1, 2010Publication date: October 21, 2010Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J. Kim, Kin K. Leung, Hui Luo
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Patent number: 7788709Abstract: A Virtual Single Account (VSA) system and method that provides a mobile user with automatic authentication and connection to a remote network via local access networks with a single password, where the local access networks may be independent of the remote network. A mobile user has a single authentication credential for one VSA that is utilized by a VSA client installed on a mobile computing device. The VSA client provides for automatically authenticating and connecting the user's mobile device to a current local access network, and the target remote network such as the user's office network. All authentication credentials are encrypted using a key generated from the user's VSA password that is generated from the user's single password. The VSA client derives the key from the submitted VSA password and decrypts all authentication credentials that are required in order to connect the mobile device to the current local access network and thereafter to the office network.Type: GrantFiled: May 2, 2006Date of Patent: August 31, 2010Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Hui Luo, Frederick Kenneth Schmidt, Jr.
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Patent number: 7768980Abstract: A method and apparatus to enable IP networking for mobile hosts without requiring changes to be made to the TCP/IP stack in the operating system installed on the mobile hosts. The apparatus is an “intelligent device” that can be installed on or connected to a mobile host, and may comprise a software-only logical module, physical hardware, or a combination of both. To a mobile host, the intelligent device emulates a network interface such as an Ethernet card or a telephone modem. The intelligent device appears to an access network just like any regular IP host connected to the access network through a physical network interface device. The intelligent device handles all mobile networking functions for the mobile host, and may control multiple different physical network interface devices to enable a connection to the “best” access network available to the mobile user at his location.Type: GrantFiled: April 13, 2006Date of Patent: August 3, 2010Assignee: AT&T Intellectual Property II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J Kim, Kin K Leung, Hui Luo
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Publication number: 20100002600Abstract: The present packet scheduling algorithm gives cellular network operators greater flexibility in adjusting the way resources are allocated among interactive best-effort data users. The present packet scheduling algorithm is capable of allocating radio resource dynamically, not only based on channel conditions, but also to achieve different performance trade-offs among users with different link qualities. According to the algorithm, channel quality is determined for each user. Channel efficiency is calculated and the channel efficiency value is used as the primary factor in weighting the delivery of packets to (or from) a given user. In a packet schedule weighting equation, a value of exponent may be varied from negative to positive to give good (or bad) users better service. However, performance of users with bad channel qualities degrades the performance of good channel users in a disproportionate manner.Type: ApplicationFiled: September 16, 2009Publication date: January 7, 2010Inventors: Zhimei Jiang, Nemmara K. Shankaranarayanan
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Patent number: 7602791Abstract: The present packet scheduling algorithm gives cellular network operators greater flexibility in adjusting the way resources are allocated among interactive best-effort data users. The present packet scheduling algorithm is capable of allocating radio resource dynamically, not only based on channel conditions, but also to achieve different performance trade-offs among users with different link qualities. According to the algorithm, channel quality is determined for each user. Channel efficiency is calculated and the channel efficiency value is used as the primary factor in weighting the delivery of packets to (or from) a given user. In a packet schedule weighting equation, a value of exponent may be varied from negative to positive to give good (or bad) users better service. However, performance of users with bad channel qualities degrades the performance of good channel users in a disproportionate manner.Type: GrantFiled: April 18, 2006Date of Patent: October 13, 2009Assignee: AT&T Corp.Inventors: Zhimei Jiang, Nemmara K. Shankaranarayanan
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Publication number: 20090154445Abstract: A method and system that reduces the impact of packet loss on video data quality. Packet selection is performed by the method and system to selectively drop low priority packets so that the overall quality of the received video data may be improved. In one exemplary embodiment, the probability of higher priority layers being delivered on time is computed and a packet is transmitted only if this probability is greater than a given threshold h. In another exemplary embodiment, the system and method have the capability of backing up the process to transmit previously skipped packets, if time allows.Type: ApplicationFiled: December 9, 2008Publication date: June 18, 2009Inventors: Zhimei Jiang, Leonard Kleinrock
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Publication number: 20090022152Abstract: An IP-based corporate network architecture and method for providing seamless secure mobile networking across office WLAN, home WLAN, public WLAN, and 2.5 G/3 G cellular networks for corporate wireless data users. The system includes Internet roaming clients (IRCs), a secure mobility gateway (SMG), optional secure IP access (SIA) gateways, and a virtual single account (VSA) server. The IRC is a special client tool installed on a mobile computer (laptop or PDA) equipped with a WLAN adaptor and a cellular modem. It is responsible for establishing and maintaining a mobile IPsec tunnel between the mobile computer and a corporate intranet. The SMG is a mobile IPsec gateway installed between the corporate intranet and the Internet. It works in conjunction with the IRC to maintain the mobile IPsec tunnel when the mobile computer is connected on the Internet via a home WLAN, a public WLAN, or a cellular network.Type: ApplicationFiled: September 30, 2008Publication date: January 22, 2009Inventors: Paul Shala Henry, Zhimei Jiang, Byoung-Jo J. Kim, Kin K. Leung, Hui Luo, Nemmara K. Shankaranarayanan
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Patent number: RE45532Abstract: A Virtual Single Account (VSA) system and method that provides a mobile user with automatic authentication and connection to a remote network via local access networks with a single password, where the local access networks may be independent of the remote network. A mobile user has a single authentication credential for one VSA that is utilized by a VSA client installed on a mobile computing device. The VSA client provides for automatically authenticating and connecting the user's mobile device to a current local access network, and the target remote network such as the user's office network. All authentication credentials are encrypted using a key generated from the user's VSA password that is generated from the user's single password. The VSA client derives the key from the submitted VSA password and decrypts all authentication credentials that are required in order to connect the mobile device to the current local access network and thereafter to the office network.Type: GrantFiled: April 1, 2014Date of Patent: May 26, 2015Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.Inventors: Paul Shala Henry, Zhimei Jiang, Hui Luo, Frederick Kenneth Schmidt