Patents by Inventor Debin Zhang
Debin Zhang 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: 9444643Abstract: A method, apparatus and computer program product for providing IP multicast over split plane wireless LAN. An access tunnel (AT) is defined as an IP multicast interface at a first network device. The AT is capable of communicating with a second network device that is an Internet Protocol (IP) multicast receiver, wherein a local Virtual Local Area Network (VLAN) the first device serves the second network device's mobility VLAN. The first network device sends a query to the second network device over the AT and receiving, in response to the sending the query, a report. A data structure is built defining a multicast group membership from the report, and multicast data is forwarded in accordance with the data structure.Type: GrantFiled: September 27, 2012Date of Patent: September 13, 2016Assignee: Avaya, Inc.Inventors: Debin Zhang, Vijay Mulamalla, Lava Lavu
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Patent number: 9118606Abstract: IP Multinetting on a local area network is simulated by performing VLAN translation at a port connecting to the local area network. This allows IP addresses from multiple subnets to be associated with a single VLAN on the Local Area Network (LAN), while allowing the core switch to process the packets with a one-to-one correspondence between IP Subnet and VLAN. When a packet is received from the local area network at an IP multinetting port, the VLAN ID will be read to determine if the packet contains the IP Multinetting VLAN ID. The IP Subnet address will also be checked to see if the packet is associated with an IP Subnet that is part of the Multinetting. If so, the multinetting VLAN ID will be changed to an IP Subnet specific VLAN ID before the packet is processed by the core switch.Type: GrantFiled: April 7, 2014Date of Patent: August 25, 2015Assignee: RPX CLEARINGHOUSE LLCInventors: Debin Zhang, Roger Lapuh, Ganesh Nakhawa
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Patent number: 8861339Abstract: A method, apparatus and computer program product for providing Routed Split Multi Link Trunking (RSMLT) for Wireless Local Area Network (WLAN) tunnels is presented. A first and second network switch learn data associated with each other, wherein the first network switch and the second network switch operate concurrently. The first network switch terminates a WLAN Tunnel. The data is synchronized between the first network switch and the second network switch, wherein the data includes MAC Addresses, Internet Protocol (IP) interface addresses, Virtual Local Area Network (VLAN) associations, WLAN tunnel assignments and Network switch Internet Protocol (IP) addresses. Load sharing of tunnel data packets is performed by the first and the second network switch. Tunnel control packets received by the second network switch are forwarded to the first network switch over an Inter Switch Trunk (IST).Type: GrantFiled: November 1, 2010Date of Patent: October 14, 2014Assignee: Avaya Inc.Inventors: Mohnish Anumala, Alexandros Moisiadis, Shu Ching Shieh, Debin Zhang, Lawrence James DiBurro
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Patent number: 8817593Abstract: A method, apparatus and computer program product for providing failover for a point to point tunnel for wireless local area network split-plane environments is presented. A second network switch learns first data associated with a third network switch and the second network switch terminates a tunnel. The third network switch learns second data associated with the second network switch. The first and second data are synchronized between the second network switch and the third network switch. The second network switch and the third network switch load sharing tunnel data packets. The third network switch forwards tunnel control packets received by the third network switch to the second network switch. A failure relating to the second network switch is detected and a new tunnel is established with the third network switch.Type: GrantFiled: November 1, 2010Date of Patent: August 26, 2014Assignee: Avaya Inc.Inventors: Shu Ching Shieh, Mohnish Anumala, Alexandros Moisiadis, Debin Zhang, Lawrence James DiBurro
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Publication number: 20140219282Abstract: IP Multinetting on a local area network is simulated by performing VLAN translation at a port connecting to the local area network. This allows IP addresses from multiple subnets to be associated with a single VLAN on the Local Area Network (LAN), while allowing the core switch to process the packets with a one-to-one correspondence between IP Subnet and VLAN. When a packet is received from the local area network at an IP multinetting port, the VLAN ID will be read to determine if the packet contains the IP Multinetting VLAN ID. The IP Subnet address will also be checked to see if the packet is associated with an IP Subnet that is part of the Multinetting. If so, the multinetting VLAN ID will be changed to an IP Subnet specific VLAN ID before the packet is processed by the core switch.Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: ROCKSTAR CONSORTIUM US LPInventors: Debin Zhang, Roger Lapuh, Ganesh Nakhawa
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Patent number: 8730793Abstract: A method, apparatus and computer program product is presented. A first tunnel is provided across a layer 3 network from a first network device to a second network device. A first virtual interface (VI) is provided on the second network device, and assigned to the first tunnel. Information related to the first tunnel and the first VI is passed to a third network device, which is a member of a cluster with the second network device. A second tunnel is provided across the layer 3 network from the third device to the first network device, and a second virtual interface (VI) is provided on the third network device, and assigned to the second tunnel. Forwarding information is exchanged between the second network device and the third network device. The second network device and the third network device provide forwarding redundancy service to the first network device.Type: GrantFiled: March 16, 2012Date of Patent: May 20, 2014Assignee: Avaya Inc.Inventor: Debin Zhang
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Patent number: 8699492Abstract: IP Multinetting on a local area network is simulated by performing VLAN translation at a port connecting to the local area network. This allows IP addresses from multiple subnets to be associated with a single VLAN on the Local Area Network (LAN), while allowing the core switch to process the packets with a one-to-one correspondence between IP Subnet and VLAN. When a packet is received from the local area network at an IP multinetting port, the VLAN ID will be read to determine if the packet contains the IP Multinetting VLAN ID. The IP Subnet address will also be checked to see if the packet is associated with an IP Subnet that is part of the Multinetting. If so, the multinetting VLAN ID will be changed to an IP Subnet specific VLAN ID before the packet is processed by the core switch.Type: GrantFiled: November 1, 2011Date of Patent: April 15, 2014Assignee: Rockstar Consortium US LPInventors: Debin Zhang, Roger Lapuh, Ganesh Nakhawa
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Publication number: 20140086133Abstract: A method, apparatus and computer program product for providing IP multicast over split plane wireless LAN. An access tunnel (AT) is defined as an IP multicast interface at a first network device. The AT is capable of communicating with a second network device that is an Internet Protocol (IP) multicast receiver, wherein a local Virtual Local Area Network (VLAN) the first device serves the second network device's mobility VLAN. The first network device sends a query to the second network device over the AT and receiving, in response to the sending the query, a report. A data structure is built defining a multicast group membership from the report, and multicast data is forwarded in accordance with the data structure.Type: ApplicationFiled: September 27, 2012Publication date: March 27, 2014Applicant: AVAYA, INC.Inventors: Debin Zhang, Vijay Mulamalla, Lava Lavu
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Publication number: 20130242718Abstract: A method, apparatus and computer program product is presented. A first tunnel is provided across a layer 3 network from a first network device to a second network device. A first virtual interface (VI) is provided on the second network device, and assigned to the first tunnel. Information related to the first tunnel and the first VI is passed to a third network device, which is a member of a cluster with the second network device. A second tunnel is provided across the layer 3 network from the third device to the first network device, and a second virtual interface (VI) is provided on the third network device, and assigned to the second tunnel. Forwarding information is exchanged between the second network device and the third network device. The second network device and the third network device provide forwarding redundancy service to the first network device.Type: ApplicationFiled: March 16, 2012Publication date: September 19, 2013Applicant: AVAYA INC.Inventor: Debin Zhang
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Patent number: 8526067Abstract: The present invention relates to a scanner and more particularly pertains to a handheld portable scanner with integrated technologies which effectively combines lighting, electronics and mechanical technologies and has a small size and convenient portability, which comprises a scanner housing, a battery, scanning components and image processing components. The scanning components are composed of an optical scanning head and a scanning rod. The image processing components are composed of scan-speed testing components which are coupled with the scanning rod, a processing chip for processing of data scanned by the optical scanning head and image processing, and a scanner circuit. The present invention provides a handheld portable scanner which has a convenient portability and extensive functions.Type: GrantFiled: April 12, 2011Date of Patent: September 3, 2013Assignee: Sky Light Electronic (Shenzhen) LimitedInventors: Rongfang Deng, Weijun Gan, Debin Zhang, Yenfeng Huang
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Routed split multi-link trunking resiliency for wireless local area network split-plane environments
Patent number: 8446818Abstract: A method, apparatus and computer program product for performing Routed Split Multi-Link Trunking Resiliency for Wireless Local Area Network split-plane environments is presented. A first network switch learns first data associated with a second network switch and the first network switch terminates an Access Tunnel (AT). The said second network switch learns second data associated with said first network switch. The first and second data are synchronized between the first network switch and the second network switch. The first network switch and the second network load sharing tunnel data packets. The second network switch forwards tunnel control packets received by the second network switch to the first network. A failure relating to said first network switch is detected and a new AT is established with the second network switch.Type: GrantFiled: November 1, 2010Date of Patent: May 21, 2013Assignee: Avaya Inc.Inventors: Alexandros Moisiadis, Mohnish Anumala, Debin Zhang, Lawrence James DiBurro, Shu Ching Shieh -
Patent number: 8432789Abstract: A method, apparatus and computer program product for providing mulitcast failover and recovery which minimizes lost packets is presented. A first network device returns to a fully active state and starts a multicast hold-down timer. A first message is sent to a second network device, the message indicating at least one Split Multi Link Trunk (SMLT) Virtual Local Area Network (VLAN) Identifier (ID) correlating to the multicast hold-down timer. The first network device receives an acknowledgment of said first message and Layer 2 forwards multicast data traffic to said second network device until the timer expires, whereupon the first device is capable of handling its own multicast data traffic, and then has Layer 2 bridging turned off and enables IP multicast routing. During the period of multicast hold-down timer, the second device will perform IP multicast forwarding on behalf of the first device.Type: GrantFiled: December 28, 2010Date of Patent: April 30, 2013Assignee: Avaya Inc.Inventor: Debin Zhang
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Patent number: 8416456Abstract: The present invention relates to a method for achieving boundary localization in a scanning apparatus, as well as to a scanning apparatus, which is capable of achieving intelligent judgement on boundary localization of the scanned file by means of this method, through an effective combination of optical, electronical and mechanical techniques. Said method comprises: a regular ribbon, a sensor module capable of detecting the ribbon, and the file to be scanned is placed between the ribbon and the sensor module; said sensor module first scans the ribbon information and stores it in the storage module of the scanning apparatus; said file to be scanned is placed between the sensor module and the ribbon, through the measured ribbon portion covered by the file to be scanned, the sensor is capable of deriving the boundary position of the file to be scanned by means of contrast measurement. With the scanning apparatus capable of achieving boundary localization.Type: GrantFiled: October 31, 2010Date of Patent: April 9, 2013Assignee: Sky Light Electronic (Shenzhen) LimitedInventors: Rongfang Deng, Weijun Gan, Debin Zhang
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Publication number: 20120262764Abstract: The present invention relates to a scanner and more particularly pertains to a handheld portable scanner with integrated technologies which effectively combines lighting, electronics and mechanical technologies and has a small size and convenient portability, which comprises a scanner housing, a battery, scanning components and image processing components. The scanning components are composed of an optical scanning head and a scanning rod. The image processing components are composed of scan-speed testing components which are coupled with the scanning rod, a processing chip for processing of data scanned by the optical scanning head and image processing, and a scanner circuit. The present invention provides a handheld portable scanner which has a convenient portability and extensive functions.Type: ApplicationFiled: April 12, 2011Publication date: October 18, 2012Applicant: SKY LIGHT ELECTRONIC (SHENZHEN) LIMITEDInventors: Rongfang DENG, Weijun GAN, Debin ZHANG, Yenfeng HUANG
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Publication number: 20120163162Abstract: A method, apparatus and computer program product for providing mulitcast failover and recovery which minimizes lost packets is presented. A first network device returns to a fully active state and starts a multicast hold-down timer. A first message is sent to a second network device, the message indicating at least one Split Multi Link Trunk (SMLT) Virtual Local Area Network (VLAN) Identifier (ID) correlating to the multicast hold-down timer. The first network device receives an acknowledgment of said first message and Layer 2 forwards multicast data traffic to said second network device until the timer expires, whereupon the first device is capable of handling its own multicast data traffic, and then has Layer 2 bridging turned off and enables IP multicast routing. During the period of multicast hold-down timer, the second device will perform IP multicast forwarding on behalf of the first device.Type: ApplicationFiled: December 28, 2010Publication date: June 28, 2012Applicant: AVAYA INC.Inventor: Debin Zhang
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ROUTED SPLIT MULTI-LINK TRUNKING RESILIENCY FOR WIRELESS LOCAL AREA NETWORK SPLIT-PLANE ENVIRONMENTS
Publication number: 20120106320Abstract: A method, apparatus and computer program product for performing Routed Split Multi-Link Trunking Resiliency for Wireless Local Area Network split-plane environments is presented. A first network switch learns first data associated with a second network switch and the first network switch terminates an Access Tunnel (AT). The said second network switch learns second data associated with said first network switch. The first and second data are synchronized between the first network switch and the second network switch. The first network switch and the second network load sharing tunnel data packets. The second network switch forwards tunnel control packets received by the second network switch to the first network. A failure relating to said first network switch is detected and a new AT is established with the second network switch.Type: ApplicationFiled: November 1, 2010Publication date: May 3, 2012Applicant: AVAYA INC.Inventors: Alexandros Moisiadis, Mohnish Anumala, Debin Zhang, Lawrence James DiBurro, Shu Ching Shieh -
Publication number: 20120106523Abstract: A method, apparatus and computer program product for providing Routed Split Multi Link Trunking (RSMLT) for Wireless Local Area Network (WLAN) tunnels is presented. A first and second network switch learn data associated with each other, wherein the first network switch and the second network switch operate concurrently. The first network switch terminates a WLAN Tunnel. The data is synchronized between the first network switch and the second network switch, wherein the data includes MAC Addresses, Internet Protocol (IP) interface addresses, Virtual Local Area Network (VLAN) associations, WLAN tunnel assignments and Network switch Internet Protocol (IP) addresses. Load sharing of tunnel data packets is performed by the first and the second network switch. Tunnel control packets received by the second network switch are forwarded to the first network switch over an Inter Switch Trunk (IST).Type: ApplicationFiled: November 1, 2010Publication date: May 3, 2012Applicant: AVAYA INC.Inventors: Mohnish Anumala, Alexandros Moisiadis, Shu Ching Shieh, Debin Zhang, Lawrence James DiBurro
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Publication number: 20120110393Abstract: A method, apparatus and computer program product for providing failover for a point to point tunnel for wireless local area network split-plane environments is presented. A second network switch learns first data associated with a third network switch and the second network switch terminates a tunnel. The third network switch learns second data associated with the second network switch. The first and second data are synchronized between the second network switch and the third network switch. The second network switch and the third network switch load sharing tunnel data packets. The third network switch forwards tunnel control packets received by the third network switch to the second network switch. A failure relating to the second network switch is detected and a new tunnel is established with the third network switch.Type: ApplicationFiled: November 1, 2010Publication date: May 3, 2012Applicant: AVAYA INC.Inventors: Shu Ching Shieh, Mohnish Anumala, Alexandros Moisiadis, Debin Zhang, Lawrence James DiBurro
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Patent number: 8151339Abstract: Multiple non-conflicting actions associated with filter rules may be located and applied to a packet using a single ACL lookup by causing action records to be created from ACEs in the ACL, and then causing the ACL lookup to return the action record rather than any one particular ACE. Radix tables may be created to enable a search engine to quickly locate the appropriate action record based on a particular set of attributes associated with the incoming packet. The action record can contain multiple actions taken from multiple ACEs that apply to the particular packet. By grouping all the actions into an action record, and then searching for an action record that applies to the packet, it is possible to apply all non-conflicting actions to the packet regardless of the number of ACEs that are used to specify those actions. Since all the actions are located together, the actions of all ACEs may be applied to a packet using a single ACL lookup.Type: GrantFiled: December 23, 2005Date of Patent: April 3, 2012Assignee: Avaya, Inc.Inventors: Vikram Ramachandran, Alexandros Moisiadis, Mohnish Anumala, Debin Zhang, Hong-Zhou Li
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Publication number: 20120044937Abstract: IP Multinetting on a local area network is simulated by performing VLAN translation at a port connecting to the local area network. This allows IP addresses from multiple subnets to be associated with a single VLAN on the Local Area Network (LAN), while allowing the core switch to process the packets with a one-to-one correspondence between IP Subnet and VLAN. When a packet is received from the local area network at an IP multinetting port, the VLAN ID will be read to determine if the packet contains the IP Multinetting VLAN ID. The IP Subnet address will also be checked to see if the packet is associated with an IP Subnet that is part of the Multinetting. If so, the multinetting VLAN ID will be changed to an IP Subnet specific VLAN ID before the packet is processed by the core switch.Type: ApplicationFiled: November 1, 2011Publication date: February 23, 2012Inventors: Debin Zhang, Roger Lapuh, Ganesh Nakhawa