Patents by Inventor Jilei Hou

Jilei Hou 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).

  • DEDICATED REFERENCE SIGNAL DESIGN FOR NETWORK MIMO
    Publication number: 20150117389
    Abstract: Aspects describe utilizing a dedicated reference signal for supporting Network MIMO, distributed MIMO, Coordinated MultiPoint, and the like. A data modulation symbol is transmitting in the same direction as a pilot modulation symbol is transmitted. Two or more wireless devices can coordinate communications such that transmission of the same pilot modulation symbol and the same data modulation symbol are transmitted to a device in different directions, each direction associated with a wireless device and intended for a particular mobile device. Cluster-specific scrambling and/or user-group specific scrambling can be employed and a scrambling code can be communicated prior to transmission of the pilot modulation symbols and data modulation symbols.
    Type: Application
    Filed: January 9, 2015
    Publication date: April 30, 2015
    Inventors: Jilei Hou, Juan Montojo, Ravi Palanki
  • Configuration and scheduling of asymmetric carriers on the uplink
    Patent number: 9007926
    Abstract: Systems and methods to configure and schedule asymmetric carriers on an uplink between communication devices are described herein. An access node is provided to reserve a common-channel-free carrier for communication with an access terminal. The access node may reserve the carrier for communication with the access terminal based on path loss data between the access node and the access terminal. Further, an adaptive rise-over-thermal (RoT) target may be employed for communication over any carrier.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: April 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Jilei Hou, Danlu Zhang
  • Scheduling information for wireless communications
    Patent number: 9001777
    Abstract: Systems and methods for communicating over multiple carriers are described herein. A predetermined event triggers the generation of scheduling information for two or more of the carriers. The predetermined event may comprise expiration of a timer set for at least one of the two or more carriers, storing data in a buffer having a higher transmission priority than data previously stored in the buffer, or changing at least one of the two or more carriers from being served by a first cell to being served by a second cell.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Sharad Deepak Sambhwani, Aziz Gholmieh, Rohit Kapoor, Jilei Hou, Ozcan Ozturk, Arjun Bharadwaj
  • System and method for mobility in a multi-point HSDPA communication network
    Patent number: 8989140
    Abstract: A method and apparatus for wireless communication may provide for mobility in a Multi-Point HSDPA network capable of downlink aggregation. Some aspects of the disclosure provide modified mobility events utilized for altering the Active Set for a UE. Here, the addition of a cell to the Active Set can coincide with making that cell a secondary serving cell. Further, the deletion of a secondary serving cell from the Active Set can coincide with switching off the Multi-Point HSDPA mode. Still further, a modified mobility event for an HSDPA serving cell change can be utilized to swap a primary serving cell and a secondary serving cell.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Sharad Deepak Sambhwani, Rohit Kapoor, Jilei Hou, Weiyan Ge
  • System and method for multi-point HSDPA communication utilizing a multi-link PDCP sublayer
    Patent number: 8989004
    Abstract: A method and apparatus for wireless communication may provide a multi-link PDCP sublayer in a radio network controller capable of allocating PDCP PDUs among a plurality of RLC entities for use in a multi-point HSDPA network. Some aspects of the disclosure address issues relating to out-of-order delivery of the PDCP PDUs to a UE, such as unnecessary retransmissions. That is, the disclosed multi-link PDCP may be capable of distinguishing between sequence number gaps that are caused by physical layer transmission failures and those caused merely by skew.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Rohit Kapoor, Bibhu Prasad Mohanty, Weiyan Ge, Jilei Hou
  • Closed loop transmit diversity in continuous packet connectivity
    Patent number: 8942147
    Abstract: Apparatus and methods for communicating in a wireless network include receiving a weight vector in a slot for providing closed loop transmit diversity to signals in a next slot, holding the weight vector over a plurality of slots following a transmission burst, and applying the weight vector to signals in at least one slot of a subsequent transmission burst in discontinuous transmit. Additional apparatus and methods for communicating in a wireless network include determining a weight vector based on signals received from a device to provide closed loop transmit diversity feedback to the device, holding the weight vector over a plurality of slots following receiving a transmission burst, and applying the weight vector for signals received in at least one slot of a subsequent transmission burst from the device.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: January 27, 2015
    Inventors: Yibo Jiang, Sharad Deepak Sambhwani, Jilei Hou
  • Carrier timing for wireless communications systems
    Patent number: 8937901
    Abstract: Synchronization of uplink carriers for transmission is disclosed in accordance with different aspects. The uplink carriers that transmit information are configured such that at least one of the uplink carriers is an anchor carrier. When a plurality of carriers are thus configured for the uplink, they are synchronized such that they bear a predetermined phase relationship with each other. The predetermined phase relationship between the plurality of carriers depends on the transmit timing of the anchor carrier or a combination of transmit timings of the anchor carrier and one or more non-anchor carriers comprised within the uplink carriers.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: January 20, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Aziz Gholmieh, Jilei Hou, Bibhu P. Mohanty
  • System and method for multi-point HSDPA communication utilizing a multi-link RLC sublayer
    Patent number: 8891356
    Abstract: A method and apparatus for wireless communication may provide a multi-link RLC sublayer in an RNC capable of allocating RLC PDUs among a plurality of MAC entities for use in a Multi-Point HSDPA network. Some aspects of the disclosure address issues relating to out-of-order delivery of the RLC PDUs to a UE, such as unnecessary retransmissions. That is, the disclosed multi-link RLC may be capable of distinguishing between sequence number gaps that are caused by physical layer transmission failures and those caused merely by skew.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: November 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Sharad Deepak Sambhwani, Rohit Kapoor, Jilei Hou, Weiyan Ge
  • UE based conditional enabling of ULTD
    Patent number: 8891387
    Abstract: In a communication system, user equipment (UE) conditionally performs uplink transmit diversity (ULTD) either by Switched Antenna Transmit Diversity (SATD) or Beamforming Transmit Diversity (BFTD) using a first antenna and a second antenna. Either a serving node or the UE determines that uplink transmit diversity is conditionally authorized. Either a serving node or the UE measures a value. The UE transmits using ULTD in response to determining that an enabling condition based on the value is satisfied. The UE can also disable uplink transmit diversity in response to determining that a disabling condition based on the value is satisfied. The disabling condition comprises a disabling threshold that equals the enabling condition comprising an enabling threshold with a threshold adjustment for hysteresis.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: November 18, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Bibhu Prasad Mohanty, Sharad Deepak Sambhwani, Chengjin Zhang, Daniel F. Filipovic, Ravi Agarwal, Jilei Hou, Rohit Kapoor
  • Method and apparatus for enhancing high data rate uplink operations
    Patent number: 8867420
    Abstract: A method and apparatus for enhancing uplink operations in a CDMA system is provided. The method may include receiving a rate control value and a transmit power value from a node B, wherein the rate control value is determined through uplink scheduling by the node B, and wherein the transmit power value is selected by the node B to maintain a signal to interference plus noise (SINR) metric within a threshold for a pilot channel, transmitting control channel information at a first power level determined from the transmit power value, and using a first average power tracking unit to generate the first selected transmit power and transmitting data channel information at a second power level determined from both the rate control value and the transmit power value.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: October 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Jilei Hou, Shengshan Cui, Danlu Zhang, Bibhu Prasad Mohanty
  • Methods and apparatus for reducing interference in wireless communication systems
    Patent number: 8855094
    Abstract: In accordance with a method for reducing interference in a wireless communication system, information about at least one disallowed beam corresponding to at least one served user may be determined. Scheduling decisions for served users may be made so as to avoid transmissions via the at least one disallowed beam. Data may be transmitted to users in accordance with the scheduling decisions.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: October 7, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: John Edward Smee, Joseph B. Soriaga, Navid Hassanpour Ghady, Jilei Hou
  • Power allocation in multi-carrier enhanced uplink
    Patent number: 8842613
    Abstract: Systems and methodologies are described that facilitate split a common total power resource among a plurality of carriers. A power distribution scheme can be employed jointly across the plurality of carriers to determine an amount of power to allocate to respective carriers. Based upon an amount of power allocated, a packet format can be selected for each carrier based upon the amount of power allocated to the carrier and/or a serving grant associated with the carrier.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Aziz Gholmieh, Ravi Agarwal, Pavan Kumar Vitthaladevuni, Ozcan Ozturk, Sharad D. Sambhwani, Jilei Hou
  • Communicating between user equipment (UE) and independent serving sectors in a wireless communications system
    Patent number: 8824307
    Abstract: A wireless communication system transmits in a High Speed Downlink Packet Access (HSDPA) by having a Radio Network Controller (RNC) assign portions of data to a first serving cell and a second serving cell for transmitting to a user equipment. The first serving cell transmits data on a first downlink carrier to the user equipment. The second serving cell, which is independent from the first serving cell, transmits data on a second downlink carrier to the user equipment. In an optional aspect, the RNC receives a measurement report from the user equipment on a first uplink carrier via at least one of the first serving cell and the second serving cell.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: September 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Sharad Deepak Sambhwani, Jilei Hou, Pavan Kumar Vitthaladevuni
  • Antenna switching in a closed loop transmit diversity system
    Patent number: 8811513
    Abstract: A method for closed loop transmit diversity that includes receiving data from user equipment (UE) that was transmitted using multiple transmit antennas, selecting a new transmit antenna for the UE, determining a new cycle period for the UE, and sending a new transmit antenna index and a testing indication based on the new cycle period to the UE.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: August 19, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yibo Jiang, Sharad Deepak Sambhwani, Jilei Hou, Jason Frank Hunzinger, Haitong Sun
  • System and method for controlling downlink packet latency
    Patent number: 8780740
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which VoIP traffic is scheduled in a way that focuses on controlling user latencies, by reshaping packet latency profiles of individual users to more efficiently utilize power/code resources. A feedback mechanism may utilize certain latency controllers to adjust a queuing delay and an over-the-air transmit time to meet latency targets. That is, system resources may be allocated in a wireless network by adjusting a latency target for a packet responsive to a user's packet latency history.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Eugene J. Baik, Jason F. Hunzinger, Vinay Chande, Jilei Hou
  • APPARATUS AND METHOD OF INTER-RADIO ACCESS TECHNOLOGY SEARCHING
    Publication number: 20140146742
    Abstract: Aspects of radio access technology searching include apparatus and methods for obtaining relative synchronization information between a first radio access technology and a second radio access technology, and determining a time location of a pilot signal of the second radio access technology based on the relative synchronization information. Further aspects include searching for the pilot signal of the second radio access technology using the determined time location. Other aspects further include determining a measurement gap duration and measurement gap location based on the relative synchronization information so as to encompass a pilot of the second radio access technology.
    Type: Application
    Filed: June 17, 2011
    Publication date: May 29, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Aamod Dinkar Khandekar, Jilei Hou, Qingxin Chen, Xipeng Zhu, Jianqiang Zhang
  • Method and apparatus for H-ARQ scheduling in a wireless communication system
    Patent number: 8738981
    Abstract: Systems and methodologies are described herein that facilitate Hybrid Automatic Repeat Request (H-ARQ) scheduling and coordination in a wireless communication system. As described herein, a network node capable of cooperation with other nodes for communication to respective users can coordinate a cooperation strategy across nodes based on a H-ARQ protocol to be utilized for a given user. In the case of a synchronous H-ARQ protocol, communication can be scheduled as described herein such that initial transmissions to a user are conducted cooperatively and re-transmissions are conducted without inter-node cooperation. In the case of a H-ARQ protocol utilizing persistent assignments, transmission intervals can be calculated and utilized based on application latency requirements, backhaul link latency, or other factors.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: May 27, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Alexei Y. Gorokhov, Jilei Hou
  • RECEIVE DIVERSITY CONTROL IN TD-SCDMA
    Publication number: 20140133319
    Abstract: In a TD-SCDMA user equipment (UE) with multiple receive chains, receive diversity may be implemented where multiple receive chains may simultaneously activate to perform reception on downlink signals. Receive diversity may be enabled when single chain reception provides undesired results and when receive diversity will not impact power consumption too much. A state machine may be implemented to control receive diversity operation based on operating conditions such as an error rate, signal-to-interference ratio, and other factors.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 15, 2014
    Applicant: QUALCOM Incorporated
    Inventors: Jinghu Chen, Qiang Shen, Jilei Hou, Wanlun Zhao, Insung Kang
  • RECEIVE DIVERSITY CONTROL IN TD-SCDMA
    Publication number: 20140112267
    Abstract: In a TD-SCDMA user equipment (UE) with multiple receive chains, receive diversity may be implemented where multiple receive chains may simultaneously activate to receive downlink signals. Receive diversity may be enabled when single chain reception provides undesired results and when receive diversity will not impact power consumption too much. A state machine controls receive diversity operation based on operating conditions such as control channel activity, successful control channel decoding, signal-to-interference ratio, and other factors.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 24, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Jinghu CHEN, Qiang SHEN, Jilei HOU, Wanlun ZHAO, Insung KANG
  • Dynamic enabling and disabling of CLTD operation via HS SCCH orders
    Patent number: 8681809
    Abstract: Apparatus and methods of wireless communication include configuring a closed loop transmit diversity (CLTD) operation between a User Equipment (UE) and an access node, detecting a condition of an uplink from the UE to the access node, and disabling CLTD operation by the UE based upon the condition. Optionally, the apparatus and methods may further include detecting that the condition of the uplink has ended, and in response enabling the CLTD operation.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: March 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad Deepak Sambhwani, Jilei Hou