Patents by Inventor Xiaohong Gong

Xiaohong Gong 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).

  • Publication number: 20110276711
    Abstract: A sink device service discovery initiation procedure performed at the Protocol Adaptation Layer (PAL) is described.
    Type: Application
    Filed: May 10, 2010
    Publication date: November 10, 2011
    Inventors: Michelle Xiaohong Gong, Guoqing Li
  • Patent number: 8040791
    Abstract: A coordinated channel change system. In particular implementations, a method includes receiving a prepare-to-change message, wherein the prepare-to-change message indicates instructions to prepare to change channels and includes a designated channel, and forwarding the prepare-to-change message to one or more child nodes. The method also includes receiving a ready-to-change message from the one or more child nodes, and transmitting a change-to-channel message to the one or more child nodes, wherein the change-to-channel message indicates instructions to switch to the designated channel. The method also includes receiving an acknowledgement message from the one or more child nodes, and changing to the designated channel.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: October 18, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Johannes Petrus Kruys, Xiaohong Gong, Jyoti Raju, Christopher G. Meil
  • Patent number: 8023482
    Abstract: A dynamic rate limiting mechanism for wireless mesh networks. In particular implementations, a method comprising monitoring one or more clients associated with a wireless mesh network and the respective hop counts of the clients to a root mesh node of the wireless mesh network; determining, responsive to one or more events, a client data rate for one or more clients of the wireless mesh network based on the number of current clients and the respective hop counts of the current clients; and applying the client data rate to the wireless mesh network.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: September 20, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, Bretton Lee Douglas, Robert B. O'Hara, Jr., Brian Donald Hart
  • Patent number: 8014329
    Abstract: A two-phased path selection process for wireless mesh networks that promotes stability and power management. If, during a first route discovery phase, a route cannot be found without waking up battery-powered nodes in a wireless mesh network, the source node will wake up battery-powered nodes in the mesh during a second route discovery phase.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: September 6, 2011
    Assignee: Cisco Technology, Inc.
    Inventor: Xiaohong Gong
  • Patent number: 7978725
    Abstract: Methods, apparatuses and systems directed to facilitating load balancing and bandwidth allocation in wireless mesh networks. Generally, according to one implementation of the present invention, routing nodes implement a contention-based media access mechanism and self-allocate bandwidth within a wireless mesh network by dynamically modifying one or more contention-based transmission control parameters. The routing nodes determine a hop count and adjust one or more contention parameters based at least in part on the hop count.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 12, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, Brian Donald Hart, Bretton Lee Douglas
  • Publication number: 20110149880
    Abstract: Embodiment and methods and means for scheduling an access point (AP) traffic destined for multiple stations (STAs) in a downlink multiple-user multiple-input-multiple-output (MIMO) network transmission are provided.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 23, 2011
    Inventor: Michelle Xiaohong Gong
  • Publication number: 20110149723
    Abstract: Techniques for packet-loss handling for downlink Multi-User Multiple-input and Multiple-Output (DL MU-MIMO) wireless networking environment are described herein. The techniques described herein help define how a wireless access point should behave when faced with a packet-loss situation of a DL transmission burst in a MU-MIMO wireless network.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Inventors: Michelle Xiaohong Gong, Adrian P. Stephens, Robert Stacey
  • Patent number: 7936681
    Abstract: Methods, apparatuses and systems directed to facilitating increased throughput in wireless mesh networks. Generally, according to one implementation of the present invention, routing nodes in a wireless mesh network combine metrics corresponding to the link and network layers to select a route to a root node in the wireless mesh network. In one implementation, for each neighbor, a given routing node computes a routing metric, which is based on the computed route cost and hop count, and selects a preferred neighbor as the parent routing node based on the best routing metric.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: May 3, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, Brian Donald Hart, Bretton Lee Douglas
  • Publication number: 20110090844
    Abstract: Some demonstrative embodiments include devices, systems and/or methods of selectively aborting reception of wireless communication packets. For example, a receiver may at least partially process a portion of a wireless communication packet, to determine based on the portion of the communication packet whether the packet is intended to be received by the receiver and, if the packet is not intended to be received by the receiver, to abort processing of a remainder of the communication packet by one or more components of a physical layer of the receiver. Other embodiments are described and claimed.
    Type: Application
    Filed: October 18, 2009
    Publication date: April 21, 2011
    Inventors: Michelle Xiaohong Gong, Eldad Perahia, Tsung-Yuan Charles Tai
  • Publication number: 20110051619
    Abstract: In an example embodiment, a method for determining backhaul channel assignments for multi-channel dual radio mesh nodes. The method comprises acquiring collision domain data for each access point of an associated mesh network. A cost function is calculated for each access point of the associated mesh network, the cost function assigning a weighted value for each access point in a collision domain based on a number of access points in the collision domain. Backhaul channel assignments for selected for each access point that minimizes the cost function.
    Type: Application
    Filed: November 4, 2010
    Publication date: March 3, 2011
    Inventors: Xiaohong GONG, David S. Stephenson, Johannes P. Kruys, Bretton Lee Douglas
  • Publication number: 20110038357
    Abstract: Device, system, and method of scanning a wireless communication frequency band. In some embodiments, a device may include a wireless communication unit to scan a first wireless communication frequency band and, upon detecting at least one access point communicating over the first wireless communication frequency band, to receive from the detected access point information identifying one or more channels of a second wireless communication frequency band, different from the first wireless communication frequency band, and to scan the identified channels to detect wireless area network communications of at least one wireless area network. Other embodiments are described and claimed.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 17, 2011
    Inventor: Michelle Xiaohong Gong
  • Publication number: 20110038290
    Abstract: Device, system, and method of power management. In some demonstrative embodiments, a device may include a wireless communication unit to transmit to a control point of a wireless area network an information request frame identifying at least one other wireless communication device in the wireless area network, wherein the wireless communication unit is to receive from the control point a response including wakeup information defining a wakeup schedule including at least one wakeup period of the other wireless communication device, and wherein, based on the wakeup information, the wireless communication unit is to transmit a wireless transmission directly to the other wireless communication device during the wakeup period. Other embodiments are described and claimed.
    Type: Application
    Filed: August 11, 2009
    Publication date: February 17, 2011
    Inventors: Michelle Xiaohong Gong, Carlos Cordeiro
  • Patent number: 7849216
    Abstract: In an example embodiment, a method for determining backhaul channel assignments for multi-channel dual radio mesh nodes. The method comprises acquiring collision domain data for each access point of an associated mesh network. A cost function is calculated for each access point of the associated mesh network, the cost function assigning a weighted value for each access point in a collision domain based on a number of access points in the collision domain. Backhaul channel assignments for selected for each access point that minimizes the cost function.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 7, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, David S. Stephenson, Johannes P. Kruys, Bretton Lee Douglas
  • Patent number: 7843817
    Abstract: A congestion control system. In particular implementations, a method includes receiving packets into one or more queues and monitoring the one or more queues for congestion. The method also includes, if a number of packets in the one or more queues exceeds a first threshold, determining a congestion control mode. The method also includes generating a congestion control message indicating the congestion control mode and transmitting the congestion control message to one or more neighboring mesh nodes.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: November 30, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, Robert B. O'Hara, Jr., Brian Donald Hart, Johannes Petrus Kruys
  • Publication number: 20100246502
    Abstract: A tunneled direct link set-up (TDLS) capable wireless network may comprise a router such as an access point (AP) and a plurality of stations (STA) including service consumer and service provider station. A service consumer station may generate and send a layer-2 query frame to the plurality of stations. A service provider station may generate a layer-2 service frame in response to receiving the layer-2 query frame. The service consumer station may discover the service provider station and the services offered by the service provider station based on the layer-2 service frame. Also, the service consumer may discover the service provider station using layer-2 query frame and may discover the services offered by the service provider station using higher layer service discovery procedure.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 30, 2010
    Inventors: Xiaohong Gong, Victor B. Lortz, Tsung-Yuan Charles Tai
  • Patent number: 7769002
    Abstract: Method and apparatus are disclosed for constrained dynamic path selection among multiple available communication interfaces. In some embodiments selection logic is operatively coupled with a number of link-layer interfaces to select a set of link-layer interfaces that satisfy a set of congestion constraint conditions. Metric logic is operatively coupled with the link-layer interfaces to calculate a metric value for each link-layer interface in the set. Switch logic is operatively coupled with the selection logic and metric logic to assign a data stream a link-layer interface in the set of interfaces according to its metric value to optimize communication performance.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 3, 2010
    Assignee: Intel Corporation
    Inventors: Xiaohong Gong, Anand Rangarajan
  • Publication number: 20100165896
    Abstract: Apparatuses, systems, methods, and computer program products to save power in peer-to-peer communication devices associated with wireless communication networks are disclosed. Embodiments generally comprise wireless communications devices. A device may associate or connect with an access point and communicate with another device also connected to the access point. The devices may establish a direct link as part of a tunneled direct link system (TDLS) network. After establishing the direct link, the devices may negotiate a wakeup schedule, enabling both devices to enter power saving modes to conserve power. The devices may maintain the direct link while in power saving modes, enabling the devices to periodically exit the power saving modes and transfer buffered data.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Inventors: Michelle Xiaohong Gong, Adrian P. Stephens, Mark Jalfon, Tsung-Yuan Charles Tai
  • Publication number: 20100165955
    Abstract: Embodiments of a central controller and methods for interference mitigation in TDMA networks are generally described herein. In some embodiments, the central controller mitigates co-channel interference by randomizing locations of channel time allocations within superframes.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Minyoung Park, Xiaohong Gong
  • Publication number: 20100157863
    Abstract: Embodiments provide techniques for device power management in wireless networks. For instance, an apparatus may include a power management module, and a transceiver module. The power management module determines a beacon interval and a wakeup interval. The transceiver module to send a transmission to one or more remote devices that includes the beacon interval and the wakeup interval. The beacon interval indicates a time interval between consecutive beacon transmissions of the apparatus, and the wakeup interval indicates a time interval between when the apparatus receives two consecutive beacons from a peer device.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Inventors: Xiaohong Gong, Jesse Walker
  • Publication number: 20090232001
    Abstract: A congestion control system. In particular implementations, a method includes receiving packets into one or more queues and monitoring the one or more queues for congestion. The method also includes, if a number of packets in the one or more queues exceeds a first threshold, determining a congestion control mode. The method also includes generating a congestion control message indicating the congestion control mode and transmitting the congestion control message to one or more neighboring mesh nodes.
    Type: Application
    Filed: March 11, 2008
    Publication date: September 17, 2009
    Applicant: Cisco Technology, Inc.
    Inventors: Xiaohong Gong, Robert B. O'Hara, JR., Brian Donald Hart, Johannes Petrus Kruys