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).

  • Patent number: 10757610
    Abstract: 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: Grant
    Filed: August 8, 2018
    Date of Patent: August 25, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
  • Publication number: 20180352484
    Abstract: 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: Application
    Filed: August 8, 2018
    Publication date: December 6, 2018
    Inventors: Takahito YOSHIZAWA, Indermeet Singh GANDHI, Swaminathan A. ANANTHA, Yuyong ZHANG
  • Patent number: 10104582
    Abstract: 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: Grant
    Filed: August 11, 2014
    Date of Patent: October 16, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
  • Patent number: 10057805
    Abstract: 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: Grant
    Filed: March 7, 2017
    Date of Patent: August 21, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
  • Publication number: 20170181025
    Abstract: 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: Application
    Filed: March 7, 2017
    Publication date: June 22, 2017
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
  • Patent number: 9603044
    Abstract: 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: Grant
    Filed: June 10, 2015
    Date of Patent: March 21, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
  • Publication number: 20160366607
    Abstract: 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: Application
    Filed: June 10, 2015
    Publication date: December 15, 2016
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Yuyong Zhang, Indermeet Singh Gandhi, Venkateswara Rao Soma, Prashanth Narayana
  • Patent number: 9439116
    Abstract: 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: Grant
    Filed: May 19, 2014
    Date of Patent: September 6, 2016
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Yuyong Zhang, Mark Grayson, Anton Okmyanskiy, Swaminathan A. Anantha
  • Publication number: 20160044544
    Abstract: 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: Application
    Filed: August 11, 2014
    Publication date: February 11, 2016
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Takahito Yoshizawa, Indermeet Singh Gandhi, Swaminathan A. Anantha, Yuyong Zhang
  • Publication number: 20150334615
    Abstract: 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: Application
    Filed: May 19, 2014
    Publication date: November 19, 2015
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Yuyong Zhang, Mark Grayson, Anton Okmyanskiy, Swaminathan A. Anantha
  • Patent number: 8908507
    Abstract: 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: Grant
    Filed: July 23, 2012
    Date of Patent: December 9, 2014
    Assignee: Movik Networks
    Inventors: 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
  • Publication number: 20130021933
    Abstract: 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: Application
    Filed: July 23, 2012
    Publication date: January 24, 2013
    Applicant: MOVIK NETWORKS
    Inventors: 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
  • Publication number: 20120195196
    Abstract: 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: Application
    Filed: August 3, 2011
    Publication date: August 2, 2012
    Inventors: Rajat Ghai, Yuyong Zhang, Vinayak Antarkar, Vinay Avasthi