Patents by Inventor Zhouyue Pi

Zhouyue Pi 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: 9118454
    Abstract: A transmission resource in a time domain subframe is divided into a plurality of equal duration resource elements in a time and frequency domain, the plurality of resource elements are segregated into a plurality of resource regions, information to be transmitted is modulated to generate a sequence of modulation symbols at a transmitter, the sequence of modulation symbols is mapped into the plurality of resource elements in the plurality of resource regions, and the modulation symbols are transmitted via a plurality of antennas using the respective corresponding resource elements to a receiver. The mapping of the modulation symbols in at least one resource region is independent of a certain control channel information that is carried in the time domain subframe, and the mapping of the modulation symbols in at least another resource region is dependent upon that certain control channel information.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: August 25, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhouyue Pi, Farooq Khan
  • Patent number: 9113419
    Abstract: Methods and apparatus for transmitting power setting information in a downlink Physical Downlink Shared Channel (PDSCH) in a communication system. In this communication system, a plurality of methods for calculating traffic-to-pilot ratios (T2P) are established. In addition, a mapping scheme between a plurality of overhead signals and a plurality of reference signal (RS) overhead ratios, ?RS, and the plurality of T2P calculation methods is established. A user-specific T2P ratio PB,k/PRS for certain OFDM symbols, a RS overhead ratio ?RS and a calculation method selected from the plurality of T2P calculation methods are assigned to a wireless terminal. Then, an overhead signal corresponding to both of the assigned RS overhead ratio ?RS and the assigned T2P calculation method is selected in accordance with the mapping scheme and is transmitted to the wireless terminal. In addition, the user-specific traffic-to-pilot ratio PB,k/PRS is transmitted to the wireless terminal.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: August 18, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jianzhong Zhang, Zhouyue Pi, Farooq Khan
  • Patent number: 9100897
    Abstract: A base station is provided. The base station includes a transmit path circuitry that generates a masking sequence to mask a cyclic redundancy check of a control channel information element. The masking sequence includes a 4-bit prefix. The three least significant bits of the 4-bit prefix indicate a message type of the control channel information element. A subscriber station is also provided. The subscriber station includes a receive path circuitry that determines a message type of a control channel information element using a three least significant bits of a 4-bit prefix of a masking sequence used to mask a cyclic redundancy check of the control channel information element.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhouyue Pi, Sudhir Ramakrishna, Kaushik Josiam
  • Patent number: 9094977
    Abstract: A base station and mobile station are configured to perform control beam association. A method at the base station includes transmitting at least one first control beam including reference signals on which the mobile station can perform a measurement. The method also includes receiving a first measurement report from the mobile station of the at least one first control beam. The method further includes, based on the first measurement report, selecting at least one of the at least one first control beam for at least one control channel for the mobile station to associate with. The method still further includes transmitting control information in the at least one control channel to the mobile station using the at least one selected control beam, the control information comprising at least one resource allocation indication for the mobile station. The at least one selected control beam is associated to the mobile station.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: July 28, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ying Li, Zhouyue Pi, Kaushik Josiam
  • Patent number: 9077415
    Abstract: A base station is capable of communicating with a plurality of subscriber stations using a beamforming scheme that varies beams over different time instances. The base station includes a plurality of antenna arrays configured to transmit N spatial beams and carry a reference symbols corresponding to specific spatial beams. The base station also includes NRF number of radio frequency (RF) processing chains coupled to respective ones of the plurality of antenna arrays, wherein N>>NRF. The subscriber station includes MRF processing receive paths configured to receive M number of beams from the base station.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kaushik Josiam, Shadi Abu-Surra, Ying Li, Sridhar Rajagopal, Zhouyue Pi
  • Patent number: 9078235
    Abstract: An apparatus and method for configuring Enhanced Multicast and Broadcast Service (E-MBS) Scheduling Intervals (MSIs) in a communication system are provided. The method includes selecting a number N of MSIs, and selecting a periodicity of each of the N MSIs. By selecting a number N of MSIs and a periodicity of each of the N MSIs, a communication system is able to more efficiently decode E-MBS data.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: July 7, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kaushik Josiam, Zhouyue Pi, Baowei Ji, Ying Li
  • Patent number: 9071434
    Abstract: Asynchronous Hybrid Automatic Repeat reQuest (ARQ) process identities are transmitted in a wireless communication system. A linking scheme is established between at least two sets of process identities of two respective corresponding codewords. When a first process identity is selected from among a first set of process identities of a first codeword, a second process identity may be derived in dependence upon the first process identity and the established linking scheme. Finally, a first packet from the first codeword is transmitted using a first transmission channel indicated by the first process identity, and a second packet is transmitted from the second codeword using a second transmission channel indicated by the second process identity. In addition, a control message including only the first process identity is transmitted.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Farooq Khan, Zhouyue Pi
  • Patent number: 9072020
    Abstract: For use in a wireless network, a femtocell base station in communication with at least one first mobile station is provided. The femtocell base station is configured adjust a resource of the femtocell base station to mitigate interference at a second mobile station. In certain embodiments, the femtocell base station is configured to coordinate a handover of the at least one first mobile station from the femtocell base station to a neighboring base station. In certain embodiments, the femtocell base station is configured to transmit a message regarding the resource adjustment to the at least one first mobile station.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ying Li, Zhouyue Pi, Baowei Ji, Jung Je Son
  • Publication number: 20150131611
    Abstract: A method and apparatus for channel interleaving in a wireless communication system. In one aspect of the present invention, the data resource elements are assigned to multiple code blocks, and the numbers of data resource elements assigned to each code block are substantially equal. In another aspect of the present invention, a time-domain-multiplexing-first (TDM-first) approach and a frequency-domain-multiplexing-first (FDM-first) approach are proposed. In the TDM-first approach, at least one of a plurality of code blocks are assigned with a number of consecutive data carrying OFDM symbols. In the FDM-first approach, at least one of the plurality of code blocks are assigned with all of the data carrying OFDM symbols. Either one of the TDM first approach and the FDM-first approach may be selected in dependence upon the number of the code blocks, or the transport block size, or the data rate.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventors: Zhouyue Pi, Jiannan Tsai, Farooq Khan
  • Patent number: 9025521
    Abstract: A method for Mobile Station (MS) collaboration for a Downlink (DL) or Uplink (UL) transmission in a wireless network having MSs in a Base Station (BS) cell is provided. The DL transmission method includes forming a cluster of MSs having a same type of radio interface, receiving, by each MS, a DL transmission including a DL control channel message and a DL data burst, extracting, by the MSs, a DL data assignment included in the DL control channel message and indicating a receiving MS intended to receive the DL data burst, decoding, by the MSs, the DL data assignment and the DL data burst according to a determination to collaborate in the DL transmission, transmitting, by the collaborating MSs, a re-encoded DL data burst to the receiving MS, the receiving MS receiving the re-encoded DL data burst from the collaborating MSs and the DL data burst from the BS.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: May 5, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kaushik Josiam, Zhouyue Pi
  • Patent number: 8989285
    Abstract: Methods and apparatus for efficiently feeding back preceding information in a multiple input multiple output (MIMO) system. A codebook including a plurality of codebook entries is constructed. A plurality of subsets of codebook entries are defined for the codebook. Each subset includes a plurality of codebook entries. A subset of codebook entries is selected for precoding data in dependence upon a channel condition, and a codebook entry is selected from the subset. Then, a subset index corresponding to the selected subset, and a codebook entry index corresponding to the selected codebook entry within the selected subset, is transmitted as feedback information.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Farooq Khan, Zhouyue Pi, Cornelius Van Rensburg, Jianzhong Zhang
  • Patent number: 8989086
    Abstract: When a subscriber station (SS) encounters interference caused an interfering base station (BS), the interference can be mitigated regardless of whether the interfering base station is a CSG-Closed BS or whether the SS is connected to a serving BS. If the SS is not connected to a serving BS and cannot access the interfering BS, the SS will signal the interfering BS directly to request the interfering BS to perform IM. If the SS is a legal user, and conditions to initiate IM are met, the interfering BS will perform IM until conditions to terminate IM are met. If the SS is connected to a serving BS, the serving BS will request the interfering BS to perform or terminate interference mitigation (IM) on behalf of the SS if certain conditions are satisfied.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: March 24, 2015
    Inventors: Ying Li, Ji-Yun Seol, Young Bo Cho, Zhouyue Pi, Sudhir Ramakrishna, Kaushik Josiam, Jaehyuk Jang
  • Publication number: 20150078234
    Abstract: Apparatus, and an associated method, for facilitating operation of a radio communication system that provides for multi rate data communications, such as a CDMA 2000 system that provides for 1xEV-DV communication services. A supplemental pilot, or control, signal generator embodied at a mobile station generates a supplemental pilot, or control, signal that is sent on a newly defined supplemental pilot, or control, channel. As the data rates of data communicated upon a reverse supplemental channel changes, corresponding changes are made to the power level of the reverse supplemental pilot, or control, signal.
    Type: Application
    Filed: October 22, 2014
    Publication date: March 19, 2015
    Inventors: Zhouyue Pi, Zhigang Rong
  • Publication number: 20150066413
    Abstract: A method and apparatus correcting errors associated with timing offsets in radiofrequency coils. The method and apparatus include a memory element and a controller. The controller is configured to execute a set of instructions to receive data of a plurality of signals, the plurality of signals comprising at least one projection echo. The controller is also configured to identify a plurality of offsets of the plurality of signals based on the at least one projection echo. The controller is also configured to apply the plurality of offsets to a k-space of the plurality of signals.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventors: Yusuf A. Bhagat, Sean Lai, Insoo Kim, Ying Dong, Zhouyue Pi, Xu Zhu
  • Patent number: 8958412
    Abstract: A mobile station is configured to perform a method for uplink timing alignment in a wireless network. The method includes receiving a first downlink synchronization signal from a base station on a first beam pair at a first time associated with a first propagation delay. The method also includes receiving a second downlink synchronization signal from the base station on a second beam pair at a second time associated with a second propagation delay. The method further includes determining a second timing advance for the second beam pair based on a known first timing advance for the first beam pair and a time difference between the first time and the second time.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: February 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jaspreet Singh, Zhouyue Pi, Ying Li
  • Patent number: 8937919
    Abstract: A method and apparatus for channel interleaving in a wireless communication system. In one aspect of the present invention, the data resource elements are assigned to multiple code blocks, and the numbers of data resource elements assigned to each code block are substantially equal. In another aspect of the present invention, a time-domain-multiplexing-first (TDM-first) approach and a frequency-domain-multiplexing-first (FDM-first) approach are proposed. In the TDM-first approach, at least one of a plurality of code blocks are assigned with a number of consecutive data carrying OFDM symbols. In the FDM-first approach, at least one of the plurality of code blocks are assigned with all of the data carrying OFDM symbols. Either one of the TDM first approach and the FDM-first approach may be selected in dependence upon the number of the code blocks, or the transport block size, or the data rate.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: January 20, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zhouyue Pi, Jiannan Tsai, Farooq Khan
  • Patent number: 8929473
    Abstract: A method and apparatus enable combined baseband (BB) and radio frequency (RF) processing of signals. The method includes receiving, by a receiver, channel estimation information for a channel between a transmitter and the receiver. The method includes identifying a plurality of paths in the channel based on the channel estimation information. The method includes calculating an RF precoding matrix for precoding one or more signals to be transmitted on each of the identified paths. The RF precoding matrix includes a phase shift for each of the identified paths. Additionally, the method includes calculating a BB precoding matrix for precoding the one or more signals by a BB precoding unit associated with the transmitter.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: January 6, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Omar El Ayach, Sridhar Rajagopal, Shadi Abu-Surra, Zhouyue Pi
  • Patent number: 8923197
    Abstract: A base station transmits a plurality of primary synchronization channel (PSC) symbols to a mobile station in a slot of a subframe of a frame-based wireless communication system. The base station also transmits a plurality of secondary synchronization channel (SSC) symbols to the mobile station in the slot of the subframe. The mobile station determines a preferred receiver beam based on the plurality of received consecutive PSC symbols.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Zhouyue Pi, Ying Li, Farooq Khan
  • Patent number: 8917653
    Abstract: Apparatus, and an associated method, for facilitating operation of a radio communication system that provides for multi rate data communications, such as a CDMA 2000 system that provides for 1xEV-DV communication services. A supplemental pilot, or control, signal generator embodied at a mobile station generates a supplemental pilot, or control, signal that is sent on a newly defined supplemental pilot, or control, channel. As the data rates of data communicated upon a reverse supplemental channel changes, corresponding changes are made to the power level of the reverse supplemental pilot, or control, signal.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: December 23, 2014
    Assignee: Nokia Corporation
    Inventors: Zhouyue Pi, Zhigang Rong
  • Patent number: RE45635
    Abstract: For use in a wireless communication network, a mobile station configured to determine a preamble sequence from a set of indexed preamble sequences by generating an index of the preamble sequence from a B-bit message is provided. The mobile station is configured to group the B bits of the message into n groups, each group having a substantially equal number of bits. The mobile station is also configured to generate a parity bit from each of the n groups. The mobile station is further configured to determine the index of the preamble sequence based on the n parity bits. The mobile station is still further configured to transmit the preamble sequence corresponding to the index of the preamble sequence. A base station configured to recover the B-bit message using the received signal from the mobile station is also provided.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: July 28, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kaushik Josiam, Zhouyue Pi, Ying Li, Hwasun Yoo