Patents by Inventor Yuyong Zhang
Yuyong 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: 10757610Abstract: In an example, a wireless communication system and apparatuses thereof are described. In an example long-term evolution (LTE) network, a first base station hands over a connection to a second base station. The first base station may be a (femto) home eNodeB (HeNB) or (macro) eNodeB. The second base station may also be a HeNB or eNodeB connected to a different gateway. The first base station may send “Handover Request” on an X2 connection, identifying the gateway that the second base station is connected to as the correct gateway. After sending a “Handover Request Acknowledgement,” the second base station correctly establishes a tunnel to a connected gateway device.Type: GrantFiled: August 8, 2018Date of Patent: August 25, 2020Assignee: Cisco Technology, Inc.Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
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Publication number: 20180352484Abstract: In an example, a wireless communication system and apparatuses thereof are described. In an example long-term evolution (LTE) network, a first base station hands over a connection to a second base station. The first base station may be a (femto) home eNodeB (HeNB) or (macro) eNodeB. The second base station may also be a HeNB or eNodeB connected to a different gateway. The first base station may send “Handover Request” on an X2 connection, identifying the gateway that the second base station is connected to as the correct gateway. After sending a “Handover Request Acknowledgement,” the second base station correctly establishes a tunnel to a connected gateway device.Type: ApplicationFiled: August 8, 2018Publication date: December 6, 2018Inventors: Takahito YOSHIZAWA, Indermeet Singh GANDHI, Swaminathan A. ANANTHA, Yuyong ZHANG
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Patent number: 10104582Abstract: In an example, a wireless communication system and apparatuses thereof are described. In an example long-term evolution (LTE) network, a first base station hands over a connection to a second base station. The first base station may be a (femto) home eNodeB (HeNB) or (macro) eNodeB. The second base station may also be a HeNB or eNodeB connected to a different gateway. The first base station may send “Handover Request” on an X2 connection, identifying the gateway that the second base station is connected to as the correct gateway. After sending a “Handover Request Acknowledgement,” the second base station correctly establishes a tunnel to a connected gateway device.Type: GrantFiled: August 11, 2014Date of Patent: October 16, 2018Assignee: Cisco Technology, Inc.Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
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Patent number: 10057805Abstract: In accordance with one example embodiment, there is provided a method that includes determining whether a received overload message includes a traffic load reduction indication element; determining a percentage of network elements to which to relay the received overload message if the received overload message includes the traffic load reduction indication element; and selecting ones of the network elements to which to send the received overload message based on the determined percentage. The method may further include modifying the received message to change a value of the traffic load reduction indication element; and sending the modified message to the selected ones of the network elements. In some embodiments, the received overload message includes a mobility management element (“MME”) START message.Type: GrantFiled: March 7, 2017Date of Patent: August 21, 2018Assignee: Cisco Technology, Inc.Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
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Publication number: 20170181025Abstract: In accordance with one example embodiment, there is provided a method that includes determining whether a received overload message includes a traffic load reduction indication element; determining a percentage of network elements to which to relay the received overload message if the received overload message includes the traffic load reduction indication element; and selecting ones of the network elements to which to send the received overload message based on the determined percentage. The method may further include modifying the received message to change a value of the traffic load reduction indication element; and sending the modified message to the selected ones of the network elements. In some embodiments, the received overload message includes a mobility management element (“MME”) START message.Type: ApplicationFiled: March 7, 2017Publication date: June 22, 2017Applicant: CISCO TECHNOLOGY, INC.Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
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Patent number: 9603044Abstract: In accordance with one example embodiment, there is provided a method that includes determining whether a received overload message includes a traffic load reduction indication element; determining a percentage of network elements to which to relay the received overload message if the received overload message includes the traffic load reduction indication element; and selecting ones of the network elements to which to send the received overload message based on the determined percentage. The method may further include modifying the received message to change a value of the traffic load reduction indication element; and sending the modified message to the selected ones of the network elements. In some embodiments, the received overload message includes a mobility management element (“MME”) START message.Type: GrantFiled: June 10, 2015Date of Patent: March 21, 2017Assignee: CISCO TECHNOLOGY, INC.Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
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Publication number: 20160366607Abstract: In accordance with one example embodiment, there is provided a method that includes determining whether a received overload message includes a traffic load reduction indication element; determining a percentage of network elements to which to relay the received overload message if the received overload message includes the traffic load reduction indication element; and selecting ones of the network elements to which to send the received overload message based on the determined percentage. The method may further include modifying the received message to change a value of the traffic load reduction indication element; and sending the modified message to the selected ones of the network elements. In some embodiments, the received overload message includes a mobility management element (“MME”) START message.Type: ApplicationFiled: June 10, 2015Publication date: December 15, 2016Applicant: CISCO TECHNOLOGY, INC.Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
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Patent number: 9439116Abstract: An example method is provided in one example embodiment and includes receiving, by a first Home eNodeB (HeNB), a first attach request from a user equipment (UE) for attaching a subscriber associated with the UE to a small cell network; determining whether the subscriber has transitioned into the small cell network from a macro cell network; exchanging, based on the determination, a first pair of messages between the first HeNB and the UE to determine an International Mobile Subscriber Identity (IMSI) of the subscriber; and exchanging, based on the determination, one or more second pairs of messages between the first HeNB and the UE to advance a sequence number for Non-Access Stratum (NAS) messages for the UE to a value corresponding to a received sequence number for the first attach request from the UE.Type: GrantFiled: May 19, 2014Date of Patent: September 6, 2016Assignee: CISCO TECHNOLOGY, INC.Inventors: Yuyong Zhang, Mark Grayson, Anton Okmyanskiy, Swaminathan A. Anantha
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Publication number: 20160044544Abstract: In an example, a wireless communication system and apparatuses thereof are described. In an example long-term evolution (LTE) network, a first base station hands over a connection to a second base station. The first base station may be a (femto) home eNodeB (HeNB) or (macro) eNodeB. The second base station may also be a HeNB or eNodeB connected to a different gateway. The first base station may send “Handover Request” on an X2 connection, identifying the gateway that the second base station is connected to as the correct gateway. After sending a “Handover Request Acknowledgement,” the second base station correctly establishes a tunnel to a connected gateway device.Type: ApplicationFiled: August 11, 2014Publication date: February 11, 2016Applicant: CISCO TECHNOLOGY, INC.Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
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Publication number: 20150334615Abstract: An example method is provided in one example embodiment and includes receiving, by a first Home eNodeB (HeNB), a first attach request from a user equipment (UE) for attaching a subscriber associated with the UE to a small cell network; determining whether the subscriber has transitioned into the small cell network from a macro cell network; exchanging, based on the determination, a first pair of messages between the first HeNB and the UE to determine an International Mobile Subscriber Identity (IMSI) of the subscriber; and exchanging, based on the determination, one or more second pairs of messages between the first HeNB and the UE to advance a sequence number for Non-Access Stratum (NAS) messages for the UE to a value corresponding to a received sequence number for the first attach request from the UE.Type: ApplicationFiled: May 19, 2014Publication date: November 19, 2015Applicant: CISCO TECHNOLOGY, INC.Inventors: Yuyong Zhang, Mark Grayson, Anton Okmyanskiy, Swaminathan A. Anantha
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Patent number: 8908507Abstract: The present invention identifies methods and procedures for correlating control plane and user plane data, consolidating and abstracting the learned and correlated data in a form convenient for minimizing and exporting to other network devices, such as those in the Core Network and the Access Network, or the origin server, CDN devices or client device. These correlation methods may use Control Plane information from a plurality of interfaces in the RAN, and User plane information from other interfaces in the RAN or CN. IF the device is deployed as an inline proxy, this information may be exported using in-band communication, such as HTTP extension headers in HTTP Request or Response packets, or another protocol header, such as the IP or GTP-U header field. Alternatively, this information can be exported out-of-band using a separate protocol between the RAN Transit Network Device (RTND) and the receiving device.Type: GrantFiled: July 23, 2012Date of Patent: December 9, 2014Assignee: Movik NetworksInventors: Surya Kumar Kovvali, Mythili Vutukuru, Charles W. Boyle, Rajat Ghai, John Hutchins, Tarek Abou-Assali, Yuyong Zhang, Nitin Rana, Thirumala Venkata Gupta Araveti, Raj Sirisikar, Gopal K. Bonthu
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Publication number: 20130021933Abstract: The present invention identifies methods and procedures for correlating control plane and user plane data, consolidating and abstracting the learned and correlated data in a form convenient for minimizing and exporting to other network devices, such as those in the Core Network and the Access Network, or the origin server, CDN devices or client device. These correlation methods may use Control Plane information from a plurality of interfaces in the RAN, and User plane information from other interfaces in the RAN or CN. IF the device is deployed as an inline proxy, this information may be exported using in-band communication, such as HTTP extension headers in HTTP Request or Response packets, or another protocol header, such as the IP or GTP-U header field. Alternatively, this information can be exported out-of-band using a separate protocol between the RAN Transit Network Device (RTND) and the receiving device.Type: ApplicationFiled: July 23, 2012Publication date: January 24, 2013Applicant: MOVIK NETWORKSInventors: Surya Kumar Kovvali, Mythili Vutukuru, Charles W. Boyle, Rajat Ghai, John Hutchins, Tarek Abou-Assali, Yuyong Zhang, Nitin Rana, Thirumala Venkata Gupta Araveti, Raj Sirisikar, Gopal K. Bonthu
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Publication number: 20120195196Abstract: A system and methods for application control which enable the delivery of Rich Internet Applications such as HD/Video Stream, Gaming, and Webservice delivery over mobile operator's PLMN is disclosed. The methods define Application Program Interfaces for Application Service Providers for delivering rich applications such as NetFlix Video service, Interactive Network Gaming etc., over wireless mobile network using state of the art web protocols such as HTTP, RTMP etc. The platform that incorporates these methods interacts with 3GPP/UMTS/LTE/CDMA defined standard compliant network devices using the standard network interfaces and present application specific control function. It further identifies extensions to the logical interfaces defined by the corresponding standards (3GPP, 3GPP2 etc.). Additionally, methods and procedures for controlling QoS in the transit network gateways, such as SGSN, GGSN, or P-GW, while delivering application traffic, are also disclosed.Type: ApplicationFiled: August 3, 2011Publication date: August 2, 2012Inventors: Rajat Ghai, Yuyong Zhang, Vinayak Antarkar, Vinay Avasthi