Patents by Inventor Honghai Zhang

Honghai 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: 8874125
    Abstract: A method implemented in an apparatus used in a radio access network (RAN) sharing system including a plurality of basestations is disclosed. The method includes estimating resource requirement or demand of one or more entities in each base station according to feedback from the plurality of basestations, computing resource allocation for said one or more entities, and enforcing the computed resource allocation using basestation-level virtualization. Other methods, apparatuses, and systems also are disclosed.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: October 28, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Rajesh Mahindra, Mohammad A. Khojastepour, Sampath Rangarajan, Honghai Zhang
  • Publication number: 20140286164
    Abstract: Methods and systems for data flow control include establishing a first connection between a gateway and a network client responsive to a connection request from the network client; establishing a second connection between the gateway and a server specified by the connection request; determining a user class for the network client based on a level of network congestion detected at the gateway based on throughput and round-trip-time delays; modifying a data flow received at the gateway on the second connection to remove data from the flow based on the determined user class of the network client; and transmitting the modified data flow to the network client via the first connection.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 25, 2014
    Applicant: NEC Laboratories America, Inc.
    Inventors: Rajesh Mahindra, Sampath Rangarajan, Honghai Zhang
  • Publication number: 20140233485
    Abstract: A basestation used in a wireless communications system is disclosed. The basestation includes a plurality of flow management schedulers, wherein the base station receives an indication of function selection from an entity, and wherein the base station chooses for the entity one of the plurality of flow management schedulers according to the indication of function selection. Other methods, apparatuses, and systems also are disclosed.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 21, 2014
    Applicant: NEC Laboratories America, Inc.
    Inventors: Ravindranath Kokku, Rajesh Mahindra, Honghai Zhang, Sampath Rangarajan
  • Patent number: 8767553
    Abstract: A method includes receiving non-elastic traffic into a cellular network serving users; varying long-term dissatisfaction of the users with dynamic resource allocations during traffic overload of the cellular network, the long term dissatisfaction being measured by at least one of a function of number of times a user from the users receives bad quality of service and a level of deterioration of quality of service to the user; and influencing number of satisfied users of the cellular network responsive to the varying of long-term dissatisfaction.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: July 1, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ravindranath Kokku, Rajesh Mahindra, Honghai Zhang, Sampath Rangarajan
  • Patent number: 8724605
    Abstract: A method includes receiving input information related to transmission of video and data by an access point in a wireless network, the input information including at least one of setup connections, modulating and coding scheme MCS; receiving, by the access point, channel state each information from each user in the wireless network, the channel state information including signal-to-interference-and-noise-ratio SINR for each user under each beam pattern; and multicast beamform scheduling, responsive to the receiving, for multicast delivery of the video and data from the access point with beamforming antennas, the videos being at least one of a multi-resolution and a multi-layered video, the scheduling including a greedy procedure for selecting beams, assigning MCS and video layer or resolution to each of the beams.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 13, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Yuanxi Jiang, Sampath Rangarajan
  • Patent number: 8724573
    Abstract: A method of uplink resource allocation is disclosed. The method includes computing a set of utilities for each of a finite set of transmission modes with a processor across a plurality of user devices, each having multiple transmit antennas, and iteratively allocating uplink resource blocks (RBs) and transmission modes to the plurality of user devices until all users have been allocated or no allocation is found, by selecting a mode that has a highest incremental utility sum for each user across one or more RBs, determining which user has the highest incremental utility sum, allocating the mode and RBs associated with the highest incremental utility sum to the user, and removing the allocated user from consideration. Other apparatuses, systems, and methods also are disclosed.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: May 13, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Narayan Prasad, Honghai Zhang, Meilong Jiang, Guosen Yue, Sampath Rangarajan
  • Patent number: 8700047
    Abstract: A method for customizable flow management in a cellular basestation is disclosed. The method includes configuring a framework on a cellular basestation; and executing customized flow management functions through the framework by an external entity. Other methods, apparatuses, and systems also are disclosed.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: April 15, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ravindranath Kokku, Rajesh Mahindra, Honghai Zhang, Sampath Rangarajan
  • Patent number: 8688520
    Abstract: A method includes controlling communications by users across a network with a predetermined capacity for desired communication flows for all the users and opportunistically aligning advertisement delivery to the users when an overload condition in the network occurs so that users perceive the disruption in communication service by the network as a minimum.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 1, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ravindranath Kokku, Rajesh Mahindra, Honghai Zhang, Sampath Rangarajan
  • Publication number: 20140087783
    Abstract: A method for uplink power control implemented in a wireless communications system including one or more user equipment, a serving base station, and at least one neighboring base station is disclosed. The method comprises measuring, at each user equipment, pathloss, sending, from each user equipment to the serving base station, the pathloss, and determining, at the serving base station, uplink transmit power based on the pathloss. Other methods, systems, and apparatuses also are disclosed.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Narayan Prasad, Sampath Rangarajan
  • Publication number: 20130337858
    Abstract: A fractional frequency reuse method for assigning physical resource units of a contiguous frequency band to sectors of cells is disclosed.
    Type: Application
    Filed: August 20, 2013
    Publication date: December 19, 2013
    Applicant: NEC Laboratories America, Inc.
    Inventors: HONGHAI ZHANG, NARAYAN PRASAD, SAMPATH RANGARAJAN
  • Patent number: 8611917
    Abstract: A method for LTE and LTE-A uplink power control includes open loop power control where user equipment UE measures downlink pathloss which is sent to an eNodeB that determines uplink UL transmit power based on the downlink pathloss.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 17, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Narayan Prasad, Sampath Rangarajan
  • Publication number: 20130254805
    Abstract: Advertisements are shown to users when the queue underflows to avoid video stalls in players/plugins so users see minimum disruption in video quality. The advertisements are pre-fetched and cached at the mobile phone to schedule them during queue underflows. If there is no congestion in the network, the queue does no underflow and advertisements are shown only to meet ad contracts. During network congestion or disruption, the queue might underflow and specific advertisements are shown to equalize network unavailability until sufficient video data has been received.
    Type: Application
    Filed: May 28, 2013
    Publication date: September 26, 2013
    Applicant: NEC Laboratories America, Inc.
    Inventors: Rajesh Mahindra, Sampath Rangarajan, Honghai Zhang
  • Patent number: 8537737
    Abstract: A method includes initializing transmission of multicast data with non-overlapping beamforming antennas by a wireless access point responsive to multiple clients; determining a beam pattern for transmission of the data by the access point responsive to feedback on a signal-to-noise-ratio SNR of each client under every beam pattern; and scheduling a multicast of the data to the clients responsive to the determining and to one of an optimal beam streaming configuration and a sub-optimal beam streaming configuration for partitioning the beam patterns into groups for creating composite beam patterns associated with assigned modulation coding and video streams.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: September 17, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Yuanxi Jiang, Sampath Rangarajan
  • Publication number: 20130237239
    Abstract: A method implemented in an apparatus used in a radio access network (RAN) sharing system including a plurality of basestations is disclosed. The method includes estimating resource requirement or demand of one or more entities in each base station according to feedback from the plurality of basestations, computing resource allocation for said one or more entities, and enforcing the computed resource allocation using basestation-level virtualization. Other methods, apparatuses, and systems also are disclosed.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 12, 2013
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Rajesh Mahindra, Mohammad A. Khojastepour, Sampath Rangarajan, Honghai Zhang
  • Patent number: 8519888
    Abstract: A method for wireless multicasting with beamforming includes dividing single lobe beam patterns into groups, each group being a composite beam pattern, the dividing being according to one of an equal power partition configuration and an asymmetric power partition configuration; and transmitting the information with the composite beam pattern.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 27, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Yuanxi Jiang, Karthikeyan Sundaresan, Sampath Rangarajan
  • Patent number: 8521173
    Abstract: Fractional frequency reuse systems and methods for assigning physical resource units of an available frequency band to sectors of cells are disclosed. In particular, the systems and methods permit adaptation of frequency configuration partitions to mobile station or throughput distribution within cells while at the same time ensuring mitigation of interference between neighboring sectors of different cells.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: August 27, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Narayan Prasad, Sampath Rangarajan
  • Publication number: 20130170366
    Abstract: Disclosed herein are techniques, methods, and apparatus pertaining to a multi-user scheduling in 4G and 3GPP LTE cellular uplinks.
    Type: Application
    Filed: July 30, 2012
    Publication date: July 4, 2013
    Applicant: NEC Laboratories America, Inc.
    Inventors: Narayan PRASAD, Honghai ZHANG, Sampath RANGARAJAN
  • Publication number: 20130072210
    Abstract: A method for LTE and LTE-A uplink power control includes open loop power control where user equipment UE measures downlink pathloss which is sent to an eNodeB that determines uplink UL transmit power based on the downlink pathloss.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Honghai Zhang, Narayan Prasad, Sampath Rangarajan
  • Patent number: 8374101
    Abstract: Methods and systems for allocating resources and modulation and coding schemes to transmit layers of a data stream are described. Embodiments provide efficient utilization of resources by collectively allocating resource slots to layers assigned a common modulation and coding scheme. Modulation and coding schemes are assigned based on a maximal utility that is modeled on the collective resource allocation.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: February 12, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Peilong Li, Honghai Zhang, Sampath Rangarajan
  • Patent number: 8351948
    Abstract: A method for customizable flow management in a cellular basestation including configuring a framework on a cellular basestation; and executing customized flow management functions through the framework by an external entity.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: January 8, 2013
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ravindranath Kokku, Rajesh Mahindra, Honghai Zhang, Sampath Rangarajan