Patents by Inventor Ngoc-Dung DAO

Ngoc-Dung DAO 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: 20160105893
    Abstract: Upon receiving a request for a virtual network and before admitting the requested virtual network, a virtual service provider controller may assess the ability of the virtual service provider network to meet conditions specified in the request. In particular, the virtual service provider controller may consider details of the traffic expected in the requested virtual network in the context of existing traffic on the virtual service provider network. Consideration may be given to geographic distribution of traffic, type of traffic, and key performance indices. Indeed, traffic of different types may be homogenized through the use of weighting factors to simplify the assessment. Upon determining that the virtual service provider network may not be able to meet the conditions, the virtual service provider controller may attempt to obtain additional resources from an infra-structure provider network or may attempt to adjust resources allocated to already admitted virtual networks.
    Type: Application
    Filed: October 7, 2015
    Publication date: April 14, 2016
    Inventors: Nimal Gamini Senarath, Ngoc-Dung Dao, Philippe Leroux, Meisam Mirahsan
  • Publication number: 20160050588
    Abstract: In one embodiment, a method of wireless load balancing includes receiving, by a communications controller from a device, a plurality of messages including a plurality of demands of a plurality of UEs and a plurality of locations of the plurality of UEs, where the plurality of demands includes a demand of a UE of the plurality of UEs, where the plurality of locations includes a location of the first UE, and where the location of the UE is in a cell and determining a utility map in accordance with the plurality of demands and the plurality of locations. The method also includes determining a recommendation of user behavior of a user of the first UE in accordance with the utility map, the location of the first UE, and the demand of the UE and transmitting, by the communications controller to the UE, the recommendation of user behavior.
    Type: Application
    Filed: March 10, 2015
    Publication date: February 18, 2016
    Inventors: Rainer Schoenen, Ziyang Wang, Halim Yanikomeroglu, Nimal Gamini Senarath, Ngoc-Dung Dao
  • Patent number: 9226309
    Abstract: An embodiment method for performing joint scheduling in a cluster of base stations (BSs) of a wireless network includes receiving coarse scheduling information pertaining to external BSs and performing joint scheduling for the instant cluster of BSs such that a sum utility is maximized. The sum utility includes an out-of-cluster utility component representing interference observed by the external BSs as a result of the joint scheduling. The out-of-cluster utility component is computed in accordance with the coarse scheduling information.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 29, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ho-Ting Cheng, Hang Zhang, Ngoc-Dung Dao, Aaron Callard
  • Publication number: 20150264098
    Abstract: A method for effective flow rate estimation for a plurality of video flows includes determining a first flow rate of each of the plurality of video flows in a first transmission window and receiving quality of experience (QoE) feedback for playing portions of the plurality of video flows in the first transmission window. The QoE feedback is received from a plurality of user equipments (UEs) receiving the plurality of video flows. A dynamic effective flow rate is estimated for each flow in the plurality of video flows in a second transmission window in accordance with at least the first flow rates of the plurality of video flows and the QoE feedback.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Inventors: Ngoc-Dung Dao, Aaron Callard
  • Patent number: 9131472
    Abstract: System and method embodiments are provided for provisioning a quality of cellular user experience (QoE) or quality of service (QoS) specified device in a wireless local area network (LAN). The embodiments enable a QoE or QoS specified by a service agreement for a device to be maintained during periods when the device is transmitting data to and receiving data from the wireless LAN (e.g., a WiFi hotspot). In an embodiment, a method includes determining that at least one QoS-sensitive device is communicating with a wireless LAN access point (AP), reserving a contention free period (CFP) in a superframe for the at least one QoS-sensitive device to communicate with the AP, and allocating a contention period (CP) in the superframe for non-QoS-sensitive devices to communicate with the AP, wherein the non-QoS-sensitive devices are prohibited from transmitting during the CFP.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: September 8, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ho-Ting Cheng, Osama Aboul-Magd, Sheng Sun, Junghoon Suh, Ngoc-Dung Dao, Alex Stephenne
  • Publication number: 20150244488
    Abstract: Various devices and methods are provided that use signaling to support advanced wireless receivers. For example, a method includes receiving an input signal at a user equipment. The input signal includes a desired signal and an interfering signal, where the desired signal defines symbols using constellations. The method also includes obtaining information identifying a wireless channel used by the interfering signal and a modulation type used to modulate data in the interfering signal. The method further includes recovering the symbols from the desired signal using the information.
    Type: Application
    Filed: March 3, 2015
    Publication date: August 27, 2015
    Inventors: Ngoc Dung Dao, Aaron Callard, Mohammadhadi Baligh, Hang Zhang, Ho Ting Cheng
  • Publication number: 20150181465
    Abstract: A network includes network components configured to perform a method for on-demand radio coordination. The method includes determining a congested radio node in a plurality of radio nodes in the network in response to congestion information received from a network device. The method includes generating a cluster of radio nodes associated with the congested radio node. The method also includes optimizing radio resources of the radio nodes in the cluster to produce cluster optimization results configured to alleviate congestion of the congested radio node. The method further includes transmitting the cluster optimization results to the radio nodes in the cluster to alleviate the congestion.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 25, 2015
    Inventors: Ngoc-Dung Dao, Hang Zhang, Xu Li
  • Publication number: 20150124604
    Abstract: System and method embodiments are provided for proactive congestion detection in radio access networks. In an embodiment, a method in a network component for inhibiting the occurrence of congestion at radio nodes in a network includes determining, by the network component, a congestion alert threshold according to available resources in the network, wherein the congestion alert threshold comprises an incoming data rate threshold to an ingress server; and transmitting, by the network component, the congestion alert threshold to the ingress server, wherein the ingress server is configured to transmit a congestion alert to the network component when the incoming data rate exceeds the congestion alert threshold.
    Type: Application
    Filed: October 16, 2014
    Publication date: May 7, 2015
    Inventors: Ngoc-Dung Dao, Hang Zhang, Hamidreza Farmanbar
  • Publication number: 20150103846
    Abstract: Embodiments are provided herein for a system and methods for real-time video (or other real-time traffic) delivery, e.g., for cellular or wireless networks. The schemes herein address real-time video delivery by a joint design of the radio resource scheduler and the video encoder at the network side, and of the decoder at the users' terminals. The system design reduces frame loss and hence improves user quality of experience. In an embodiment, a radio node detects a frame of a real-time traffic flow. Upon determining that a transmission deadline corresponding to a rate for real-time traffic flow does not support a size of the frame, the transmission deadline is extended according to the size of the frame and a size of a next frame. The frame and the next frame are scheduled for forwarding within the extended transmission deadline.
    Type: Application
    Filed: November 27, 2013
    Publication date: April 16, 2015
    Applicant: FutureWei Technologies, Inc.
    Inventor: Ngoc Dung Dao
  • Patent number: 8995592
    Abstract: Various devices and methods are provided that use signaling to support advanced wireless receivers. For example, a method includes receiving an input signal at a user equipment. The input signal includes a desired signal and an interfering signal, where the desired signal defines symbols using constellations. The method also includes obtaining information identifying a wireless channel used by the interfering signal and a modulation type used to modulate data in the interfering signal. The method further includes recovering the symbols from the desired signal using the information.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: March 31, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ngoc Dung Dao, Aaron Callard, Mohammadhadi Baligh, Hang Zhang, Ho Ting Cheng
  • Publication number: 20150024802
    Abstract: A method for configuring a first base station within a cluster in a communications system having a plurality of cluster includes optimizing an operating parameter of the first base station in accordance with first utility function results from a first utility function associated with the first base station and second utility function results from a second utility function associated with a second base station within the cluster, the first utility function results and the second utility function results according to multiple settings for the operating parameter of the first base station, a first initialized setting of the operating parameter for the second base station, and a second initialized setting of the operating parameter for an external base station outside the cluster. The method also includes sharing the optimized operating parameter with the external base station.
    Type: Application
    Filed: October 10, 2014
    Publication date: January 22, 2015
    Inventors: Aaron Callard, Ngoc Dung Dao, Hang Zhang, Ho Ting Cheng, Gamini Senarath
  • Publication number: 20140362730
    Abstract: An embodiment method includes receiving service parameters for a service and locating logical network nodes for a service-specific data plane logical topology at respective physical network nodes among a plurality of physical network nodes according to the service parameters, a service-level topology, and a physical infrastructure of the plurality of physical network nodes. The method also includes defining connections among the logical network nodes according to the service parameters, the service-level topology, and the physical infrastructure, and defining respective connections for a plurality of UEs to at least one of the logical network nodes according to the service parameters, the service-level topology, and the physical infrastructure. The method further includes defining respective functionalities for the logical network nodes.
    Type: Application
    Filed: June 5, 2014
    Publication date: December 11, 2014
    Inventors: Hang Zhang, Aaron Callard, Gamini Senarath, Petar Djukic, Alex Stephenne, Ngoc-Dung Dao, Hamidreza Farmanbar, Xu Li, Kaveh Shafiee, Philippe Leroux
  • Publication number: 20140362688
    Abstract: A system and method for agile wireless access network is provided. A method embodiment for agile radio access network management includes determining, by a network controller, capabilities and neighborhood relations of radio nodes in the radio access network. The network controller then configures a backhaul network infrastructure for the radio access network in accordance with the capabilities and the neighborhood relations of the radio nodes.
    Type: Application
    Filed: November 1, 2013
    Publication date: December 11, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hang Zhang, Gamini Senarath, Aaron Callard, Hamidreza Farmanbar, Ngoc-Dung Dao, Alex Stephenne, Petar Djukic, Xu Li, Kaveh Shafiee, Philippe Leroux
  • Patent number: 8862185
    Abstract: A method for configuring a first base station within a cluster in a communications system having a plurality of cluster includes optimizing an operating parameter of the first base station in accordance with first utility function results from a first utility function associated with the first base station and second utility function results from a second utility function associated with a second base station within the cluster, the first utility function results and the second utility function results according to multiple settings for the operating parameter of the first base station, a first initialized setting of the operating parameter for the second base station, and a second initialized setting of the operating parameter for an external base station outside the cluster. The method also includes sharing the optimized operating parameter with the external base station.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: October 14, 2014
    Assignee: Futurewei Technologies, Inc.
    Inventors: Aaron Callard, Ngoc-Dung Dao, Hang Zhang, Ho Ting Cheng, Gamini Senarath, Mark Andrew Hawryluck
  • Publication number: 20140269896
    Abstract: A system and method for compressing data is provided. An embodiment comprises building an adaptive global codebook for each scene in a sequence of video frames. Each frame in the sequence of frames is encoded based on a different encoding order that facilitates an efficient codebook update. Context models for the currently encoded macroblocks are based on temporally and spatially neighboring macroblocks and a global codebook.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: FutureWei Technologies, Inc.
    Inventor: Ngoc-Dung Dao
  • Publication number: 20140140451
    Abstract: Historical decoding in accordance with signal interference cancellation (SIC) or joint processing may reduce the amount of data that is re-transported across a network following an unsuccessful attempt to decode a data transmission. In one example, historical decoding is performed in accordance with interference cancellation by communicating information related to interfering data (rather than information related to serving data) following a served receiver's unsuccessful attempt to decode an interference signal. The information related to the interfering data may be the information bits carried by the earlier interfering data transmission or parity information (e.g., forward error correction (FEC) bits, etc.) related to the earlier interfering data transmission.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Aaron Callard, Hamidreza Farmanbar, Alex Stephenne, Ngoc-Dung Dao
  • Patent number: 8730788
    Abstract: According to one embodiment there is provided a method performed in a transmitter side of a multiuser minimum square error linear precoding MIMO system that comprises a transmitter with a plurality of transmit antennae and a plurality of receivers. Each receiver of the plurality of receivers comprises a plurality of receive antennae. The method is a method of scheduling receivers from among the plurality of receivers and comprises obtaining, for some or all of the receivers, receiver channel information that quantifies the properties of transmit channels between receiver antennae of the receiver and transmit antennae of the transmitter and establishing an order for determining the receiver combining vectors of the some or all of the receivers. The order is established by selecting as a next receiver in the order a so far unselected receiver from the some or all of the receivers that minimally increases the mean square data transmission error.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: May 20, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ngoc-Dung Dao, Fengming Cao, Yong Sun
  • Publication number: 20140115094
    Abstract: Systems and methods are provided to improve data transmission efficiency over a network. The improvements are achieved by reducing the redundancy in the data representation. The data is divided into a plurality of data portions. The data portions are used to encode a plurality of compressed data portions, wherein the compressed data portions correspond to a subset of the data portions and comprise less redundant data than the subset of the data portions. The compressed data portions are also encoded in accordance with data in the remaining data portions. The compressed data portions are transmitted instead of the subset of the data portions with the remaining data portions according to a sequence of data portions. Each of the compressed data portions is transmitted upon receiving an acknowledgment (ACK) message that indicates successful transmission of a previous data portion or compressed data portion in the sequence of data portions.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Applicant: FutureWei Technologies, Inc.
    Inventors: Ngoc-Dung Dao, Aaron Callard, Hang Zhang, Ho-Ting Cheng
  • Publication number: 20140106802
    Abstract: An embodiment method for performing joint scheduling in a cluster of base stations (BSs) of a wireless network includes receiving coarse scheduling information pertaining to external BSs and performing joint scheduling for the instant cluster of BSs such that a sum utility is maximized. The sum utility includes an out-of-cluster utility component representing interference observed by the external BSs as a result of the joint scheduling. The out-of-cluster utility component is computed in accordance with the coarse scheduling information.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Ho-Ting Cheng, Hang Zhang, Ngoc-Dung Dao, Aaron Callard
  • Patent number: 8599739
    Abstract: The present disclosure concerns the harnessing of the effect of a relay to enhance the ability to avoid the effect of interference at mobile stations. This is achieved either by overlaying beamforming for an indirectly reached mobile station so that a relay passes on this beamforming to the mobile station concerned, and retaining orthogonality therewith, or by harnessing a base station and a relay station together so that their combined effect is to provide spatial multiplexing to two or more mobile stations.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: December 3, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yong Sun, Ngoc-Dung Dao, Filippo Tosato