Patents by Inventor Zhong Yu

Zhong Yu 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: 8611944
    Abstract: The present invention discloses a method for controlling pilot power of an HNB, comprising: initializing the HNB and setting up communication connection between the HMB and a mobile terminal user, and further comprising: determining a setting type of a current data communication service; increasing current pilot power when the current data communication service is of a first type and a current SNR is less than a predetermined threshold; and reducing the current pilot power when the current data communication service is of a second type and the current SNR is more than or equal to the predetermined threshold. The present invention further provides a system for controlling pilot power of an HNB, which can rationally distribute pilot power resources.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: December 17, 2013
    Assignee: ZTE Corporation
    Inventors: Tiantian Ding, Zhong Yu, Wei Wei
  • Patent number: 8571133
    Abstract: An apparatus and method are described for transmitting a signal within a predetermined spectral mask defining a range of power density limits across a frequency range. A signal source provides an input signal to a low-pass filter, which filters the input signal to produce a filtered signal. The filter is selectively operable in a first mode in which the input signal is filtered within a narrower bandwidth, and in a second mode in which the input signal is filtered within a broader bandwidth. The filtered signal is output to a modulator, which modulates the filtered signal to produce a modulated signal. The modulated signal is output to a transmitter, which transmits the modulated signal.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: October 29, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Zhi-Zhong Yu, Mungal S. Dhanda
  • Publication number: 20130281101
    Abstract: A cellular communications system in which transmission of control signals for plural different remote stations is so displaced in time that the transmission of control signals for one remote station does not interfere with the transmission of control signals for another remote station, the displacement being sufficient to prevent contemporaneous reception of control signals by the remote station intended for the other remote station. Other aspects, embodiments, and features are also claimed and described.
    Type: Application
    Filed: June 4, 2013
    Publication date: October 24, 2013
    Inventors: Zhi-Zhong YU, Mungal Singh Dhanda
  • Publication number: 20130114476
    Abstract: The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means and instructions for sharing signals on a single channel, comprising setting up a new connection, allocating a new time slot if there is an unused time slot on a channel frequency, selecting an used time slot for the new connection to share with an existing connection if there is not an unused time slot on the channel frequency, and selecting a different training sequence code for the new connection if the used time slot on the channel frequency has been selected for the new connection to share with an existing connection.
    Type: Application
    Filed: December 21, 2012
    Publication date: May 9, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Zhi-Zhong Yu, Mungal Singh Dhanda, Simon Walke, Mukund Agarwal
  • Patent number: 8432824
    Abstract: A method of selecting a receiving apparatus for co-channel operation, the method comprising: transmitting a first and a second data at predetermined respective power levels on a single first channel comprising a single frequency and time slot; receiving the data; measuring a characteristic of the data; transmitting a signal indicating the measured characteristic; receiving the indicating signal; and responding to the received indicating signal by selecting the receiving apparatus for co-channel operation depending on the measured characteristic.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: April 30, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Zhi-Zhong Yu
  • Patent number: 8401506
    Abstract: The invention provides a method and system for the wireless terminal radiation performance test based on a data mode, and wherein, the method comprises: building a human body model, in which the upper limb of the model holds the device under test at a predefined distance in front of the head of the model; taking the antenna of the device under test as the origin to build a spherical coordinate and selecting a testing point in the spherical coordinate; placing the model under the circumstance of a full-anechoic chamber, enabling the device under test to work in a data mode, and collecting the total radiated power at the testing point in the spherical placement system using the testing antenna, so as to obtain the total radiated power of the device under test. Through using the invention, the performance effect of human body coupling on the mobile terminal in a data mode could be reflected truly. It has higher authenticity and is easy to use.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: March 19, 2013
    Assignee: ZTE Corporation
    Inventor: Zhong Yu
  • Patent number: 8374156
    Abstract: The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means and instructions for sharing signals on a single channel, comprising setting up a new connection, allocating a new time slot if there is an unused time slot on a channel frequency, selecting an used time slot for the new connection to share with an existing connection if there is not an unused time slot on the channel frequency, and selecting a different training sequence code for the new connection if the used time slot on the channel frequency has been selected for the new connection to share with an existing connection.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: February 12, 2013
    Assignee: Qualcomm Incorporated
    Inventors: Zhi-Zhong Yu, Mukund Agarwal, Mungal Singh Dhanda, Simon Walke
  • Publication number: 20130027256
    Abstract: The present invention discloses a method and system for testing OTA performance in a multi-antenna system. Multiple antennas are set in an anechoic chamber; a BS simulator is controlled to transmit benchmark test signal to DUT through a channel emulator and antennas; when determining the benchmark test signal does not meet set requirement, the benchmark test signal is adjusted until set requirement is met; corresponding test cases are determined according to different channel models; according to channel models, the channel emulator performs channel simulation processing on test signal output from the BS simulator and sends the test signal to DUT through antennas; after DUT receives the test signal, each OTA performance is tested according to OTA performance test items corresponding to test cases; and DUT is judged to reach the standard when all OTA performances reach the standard. The present invention is easy to implement and has a low cost.
    Type: Application
    Filed: June 22, 2010
    Publication date: January 31, 2013
    Applicant: ZTE CORPORATION
    Inventors: Yang Guo, Xinyu Zheng, Zhong Yu
  • Patent number: 8358992
    Abstract: A method and system for the wireless terminal receiving sensitivity performance test based on a data mode are provided. The method comprises: building a human body model, in which the upper limb of the model holds the device under test at a predefined distance in front of the head of the model; taking the antenna of the device under test as the origin to build a spherical coordinate and selecting a testing point in the spherical coordinate; placing the model under the circumstance of a full-anechoic chamber; enabling the device under test to work in a data mode, and collecting the receiving power at the testing point in the spherical placement system using the testing antenna, so as to obtain the total power receiving sensitivity of the device under test. In this way, the performance influence on the mobile terminal from the human body coupling of the human being in a data mode can be actually reflected, the reality is high and the usage is easy.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: January 22, 2013
    Assignee: ZTE Corporation
    Inventor: Zhong Yu
  • Patent number: 8343778
    Abstract: The invention encompasses microfluidic microarray assemblies (MMA) and subassemblies and methods for their manufacture and use. In one embodiment, first and second channel plates are provided and are sealingly connected to a test chip in consecutive steps. Each plate includes microfluidic channels configured in a predetermined reagent distribution pattern. The test chip comprises a plurality of discrete test positions, each test position being located at the intersection between a first predetermined reagent pattern and a second predetermined reagent pattern, wherein at least one of said patterns is non-linear. The first channel plate allows the distribution of a first reagent on said test chip, wherein said first reagent is immobilized at said test positions. The second channel plate allows the distribution of a second reagent on said test chip, wherein said second reagent comprises a plurality of different test samples.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 1, 2013
    Assignee: Simon Fraser University
    Inventors: Hua Zhong Yu, Meenakshinathan Parameswaren, Paul Chi Hang Li, Xing Yue Peng, Hong Chen, Wa Lok Chou
  • Publication number: 20120309323
    Abstract: A method and system for over the air performance testing based on a multi-antenna system are disclosed. The method comprises: a branch device mapping path signals from a channel emulator to test antennas according to the set number of the combined sub-paths and sub-path mapping rule; the test antennas transmitting spatial signals according to the path signals from the branch device; and a device under test receiving the spatial signals; and an over the air performance analysis and display module analyzing and displaying the over the air performance of the device under test based on the spatial signals received by the device under test. The present invention implements the test of the over the air performance of a multi-antenna terminal.
    Type: Application
    Filed: June 12, 2010
    Publication date: December 6, 2012
    Applicant: ZTE Corporation
    Inventors: Yang Guo, Xinyu Zheng, Zhong Yu
  • Publication number: 20120287942
    Abstract: Methods and devices of converting signals of consumer electronics connection protocols to high speed bi-directional signals are presented. A novel packing method packs all the data, clocks, and control signals into one or more packets of a predefined format. A novel unpacking method unpacks the packets to original data, clocks, and control signals.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Applicant: SIFOTONICS TECHNOLOGIES CO., LTD
    Inventors: Bo Peng, Zhong Yu, Jack Yuan, Chunmei Li, Dong Pan
  • Publication number: 20120282863
    Abstract: This disclosure claims antenna testing system, including a signal transmission simulator, a channel emulator and an anechoic chamber; more than two antennae are set in the anechoic chamber; each antenna is connected with the signal transmission simulator through the channel emulator; the more than two antennae are located on the sphere which center is the position of the device under test. This disclosure claims an antenna testing method, comprising: more than one channel model for test is set in the signal transmission simulator; a channel model is selected from the more than one channel model; wireless signals are transmitted according to the selected channel model; after emulation processed by channel emulator, emulated wireless signals are transmitted through the antennae in anechoic chamber; DUT set in the anechoic chamber receives and then processes the signals transmitted from each antenna, and outputs the processing results.
    Type: Application
    Filed: March 22, 2010
    Publication date: November 8, 2012
    Inventors: Yang Guo, Zhong Yu
  • Publication number: 20120220292
    Abstract: Embodiments of the present invention include devices, systems and methods for prevention of dropped calls. For example, a method for preventing dropped voice calls can be performed by a base station. Multiple reports are received from multiple wireless communication devices. A first wireless communication device having a poor received signal is identified using the reports. A sub-channel power imbalance ratio is adjusted so that the base station gives favorable power imbalance to the first wireless communication device over a second wireless communication device. The second wireless communication device is paired with the first wireless communication device. Adjusting the sub-channel power imbalance ratio prevents a voice call by the first wireless communication device from being dropped that would otherwise be dropped. Other aspects, embodiments and features are also claimed and described.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 30, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Zhi-Zhong YU, Divaydeep Sikri
  • Publication number: 20120134400
    Abstract: An apparatus and method for testing a multi-in multi-out (MIMO) wireless terminal are provided. In the apparatus, a MIMO transmission mode selecting unit includes: a mode selecting module, which is configured to select a MIMO downlink transmission mode currently requiring testing and trigger a corresponding MIMO downlink transmission module during the real-world over-the-air (OTA) test for the MIMO wireless terminal; and the downlink transmission module, which is configured to output downlink test signals which conform to the feature of the selected MIMO downlink transmission mode according to the triggering of the mode selecting module. The method includes: during the OTA test for the MEMO wireless terminal, selecting a MIMO downlink transmission mode currently requiring testing from multiple configured MIMO downlink transmission modes, and outputting downlink test signals that conform to the feature of the selected MIMO downlink transmission mode.
    Type: Application
    Filed: December 14, 2009
    Publication date: May 31, 2012
    Applicant: ZTE CORPORATION
    Inventors: Tiantian Ding, Yang Guo, Zhong Yu, Zhou Zhi
  • Publication number: 20120113878
    Abstract: A cellular communications system in which transmission of control signals for plural different remote stations is so displaced in time that the transmission of control signals for one remote station does not interfere with the transmission of control signals for another remote station, the displacement being sufficient to prevent contemporaneous reception of control signals by the remote station intended for the other remote station.
    Type: Application
    Filed: May 11, 2010
    Publication date: May 10, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Zhi-Zhong Yu, Mungal Singh Dhanda
  • Patent number: 8134991
    Abstract: A first sequence for a first digital symbol burst is selected to be transmitted, which first sequence comprises a set of end symbols with a first particular symbol pattern. A second sequence for a second digital symbol burst is also selected for transmission after the first digital symbol burst, which second sequence comprises a set of start symbols with a second particular symbol pattern. The first digital symbol burst is modulated in a first modulation format and the second digital symbol burst is modulated in a second modulation format different than the first modulation format. Transmitting the second digital symbol burst starts upon completion of the transmission of the first digital information symbol at an instant so selected that transmission of the end set of bits of the first code sequence is synchronized in time with the start set of bits of the second code sequence.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: March 13, 2012
    Assignee: Qualcomm Incorporated
    Inventor: Zhi-Zhong Yu
  • Publication number: 20120051303
    Abstract: Embodiments of the present invention include wireless communication systems having one or more network components that can communicate with at least one mobile station in an interference environment. A transmitter can transmit data indicating a set of communication modes in which a mobile station is capable of operating and for at least one mode of communication in the set an indication of interference rejection capability. The indicating data can be received by a receiver. A resource allocator can allocate system resources based on the indicating data for use during a connection between network components (e.g., a network apparatus and a mobile station). Allocation of system resources can fully or partially depend on a connection's communication mode, an indication of interference rejection capability of a mobile station for the mode of communication of the connection, and/or an interference environment expected during the connection. Other aspects, embodiments, and features are also claimed and described.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Mungal Singh Dhanda, Zhi-Zhong Yu, Divaydeep Sikri
  • Publication number: 20120014482
    Abstract: Data communication devices, methods, and systems are discussed in this application. In one embodiment, a receiving apparatus generally comprises a detector, an indicator, and a decision device. The detector can detect a number of data streams contained in a signal received on a single physical channel. Detection can be made by comparing a received signal with one or more predetermined sequences and identifying one or more of the plural predetermined sequences as being likely contained within the received signal. Each data stream can be associated with at least one predetermined sequences. The indicator can provide an indication of the data streams likely contained in the signal based on the identified sequences. A decision device can provide data defining a receiver configuration based on the indication, the receiver configuration being suitable for configuring a decoder to decode only the one or more data streams indicated as being likely contained in the signal.
    Type: Application
    Filed: July 12, 2011
    Publication date: January 19, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Zhi-Zhong Yu, Divaydeep Sikri
  • Publication number: 20110275404
    Abstract: The present invention discloses a method for controlling pilot power of an HNB, comprising: initializing the HNB and setting up communication connection between the HMB and a mobile terminal user, and further comprising: determining a setting type of a current data communication service; increasing current pilot power when the current data communication service is of a first type and a current SNR is less than a predetermined threshold; and reducing the current pilot power when the current data communication service is of a second type and the current SNR is more than or equal to the predetermined threshold. The present invention further provides a system for controlling pilot power of an HNB, which can rationally distribute pilot power resources.
    Type: Application
    Filed: December 10, 2009
    Publication date: November 10, 2011
    Applicant: ZTE CORPORATION
    Inventors: Tiantian Ding, Zhong Yu, Wei Wei