Patents by Inventor Guangming Shi

Guangming Shi 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: 20130069828
    Abstract: Methods and systems are described for using location-based information to determine whether to perform a ranging procedure. A change in location of a device is identified. The identified change in location represents the distance the device has moved during an interval between ranging procedures. The identified change in location is analyzed to determine whether the change exceeds a threshold distance. If the change in location does not satisfy the threshold distance, a change in a signal quality metric of the device from the location associated with the previously performed ranging procedure to the current location is identified. The identified change in signal quality metric is analyzed to determine whether the change exceeds a threshold value. If the change in location of the device is less than the threshold distance and the change in the signal quality metric is less than the threshold value, the next scheduled ranging procedure is bypassed.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Steven D. Cheng, Guangming Shi, Nitin Pant
  • Publication number: 20130070656
    Abstract: Method and apparatus for the multimode terminal (MMT) in idle mode operation in CDMA 1xRTT and frame asynchronous TD-SCDMA networks techniques for scheduling paging intervals in the multimode terminal to reduce paging interval conflicts. The method generally includes determining a circuit-switched (CS) discontinuous reception (DRX) cycle length of the first network (1010), determining a paging cycle length of the second network (1020), setting a packet-switched (PS) DRX cycle length” based on the paging cycle length and the CS DRX cycle length to avoid overlap between a paging interval of the first network and a paging interval of the second network (1030), and communicating the PS DRX cycle length to the first network (1040).
    Type: Application
    Filed: April 2, 2010
    Publication date: March 21, 2013
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Patent number: 8385261
    Abstract: Methods and apparatus for setting the connection identifier (CID) mask length of a Hybrid Automatic Repeat-Request (HARQ)-MAP or a SUB-MAP pointer information element (IE) in a compressed downlink map (DL-MAP) of an orthogonal frequency-division multiple access (OFDMA) frame are provided in an effort to reduce the number of false indications in the CID mask, while also striving, as a secondary concern, to reduce the CID mask length. In this manner, an individual mobile station (MS) may not waste processing, battery power, or time interpreting a HARQ-MAP message or a sub downlink/uplink map (SUB-DL-UL-MAP) message that was not intended for this particular MS. For some embodiments where the CID mask length is set to be small, the control overhead (i.e., the size of the HARQ-MAP or the SUB-MAP pointer IE) may be decreased, and more of the OFDMA frame may be available for data traffic.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: February 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Patrick Lim, Tom Chin, Wei Zhang, Yu Wang, Chun Woo Lee, Fangqi Hu, Guangming Shi, Feng Guo, Ta Yan Siu, Doo Seok Kim, Jong Ro Park
  • Publication number: 20130044731
    Abstract: Methods, systems, and devices are described for utilizing proactive feedback information during a handover of a mobile device from a source base station to a target base station. The mobile device may transmit handover messages to the target base station that includes feedback status information, which may include automatic repeat request (ARQ) information elements in some embodiments. The target base station may request that the source base station transmit packets to the target base station based on the received feedback status information. The source base station may transmit handover messages to the mobile device that include feedback status information in some embodiments. Some embodiments may provide for fast resumption of data transmission by utilizing the proactively sent feedback status information from a mobile device to a base station during handover. Some embodiments may reduce the bandwidth for transferring unnecessary data between base stations.
    Type: Application
    Filed: October 28, 2011
    Publication date: February 21, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Guangming Shi, Tom Chin, Ta-yan Siu, Steven D. Cheng, Kuo-Chun Lee
  • Publication number: 20130040666
    Abstract: Certain aspects of the present disclosure present methods and apparatus for resolving conflict between paging intervals of two different networks. For certain aspects, a multimode mobile station (MS) may select a network for monitoring based on a predefined criterion. For an aspect, the multimode MS may select a network whose paging interval starts earlier or a network whose paging interval finishes earlier. The multimode MS may also select a network that has a higher signal quality, or higher radio access technology (RAT)-based priority. In another aspect, if the multimode MS uses multiple input multiple output (MIMO), the multimode MS may split its available resources (e.g., receive chains) to simultaneously monitor paging signals transmitted by both networks.
    Type: Application
    Filed: October 27, 2011
    Publication date: February 14, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee, Steven D. Cheng
  • Publication number: 20130034080
    Abstract: A method of wireless communication includes receiving redirection information, from a source radio access technology (RAT), to set up a connection in a target RAT. The redirection information includes a fast return indication. A UE returns to the source RAT in accordance with the fast return indication after call release in the target RAT.
    Type: Application
    Filed: February 28, 2012
    Publication date: February 7, 2013
    Applicant: Qualcomm Incorporated
    Inventors: Ming Yang, Tom Chin, Qingxin Chen, Guangming Shi
  • Publication number: 20130028081
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with providing a process for balancing loads and reducing call blocking in a TD-SCDMA network. In one example, a user equipment (UE) is equipped to obtain a received signal code power (RSCP) value and a load factor value for each of one or more cells. The UE may be further equipped to rank the one or more cells based on a cell selection value derived from both the RSCP value and the load factor value and select a serving cell from the ranked one or more cells.
    Type: Application
    Filed: January 26, 2012
    Publication date: January 31, 2013
    Inventors: Ming Yang, Tom Chin, Qingxin Chen, Guangming Shi
  • Publication number: 20130010656
    Abstract: In a wireless communication system, a user equipment (UE) may be capable of communication on multiple radio access networks. A UE may be in simultaneous communication with one radio access network, such as TD-SCDMA for circuit-switched voice calls and with another radio access network, such as TDD-LTE for packet-switched data communications. When the TDD-LTE network is idle, the UE may evaluate signal strength of the respective network for potential cell reselection. The UE may measure only a serving TD-SCDMA cell for purposes of switching packet-switched service to the TD-SCDMA network, thereby avoiding a situation where the UE attempts to connect to a different TD-SCDMA cell for purposes of packet-switched communications than the cell presently affiliated with the UE for circuit-switched communications.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 10, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20130010663
    Abstract: Aspects of the present disclosure allow a mobile station (MS) to maintain data activity while performing handover operations within the WiMAX network and listening to a CDMA 1x paging cycle. According to aspects, the MS maintains timing of a base station (BS) in a first radio access technology (RAT) and a BS in a second RAT. The MS may determine an expected timing of a paging cycle in the second RAT and send a sleep request to the BS in the first RAT such that the sleep interval coincides with the timing of the paging cycle in the second RAT. The MS may perform operations to ensure a sleep interval, after performing handover operations, coincides with the timing of the paging cycle in the second RAT.
    Type: Application
    Filed: October 6, 2011
    Publication date: January 10, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120294288
    Abstract: A method and apparatus for facilitating dynamic time slot allocation is provided. The method may comprise receiving an assignment of at least one of a downlink time slot or an uplink time slot, wherein the downlink time slot is selected based on at least one of a number of used code channels in the downlink time slot, or a downlink transmit power, and wherein the uplink time slot is selected based on at least one of a number of used code channels in the uplink time slot, intra-cell interference, or other-cell interference.
    Type: Application
    Filed: March 31, 2010
    Publication date: November 22, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120287917
    Abstract: A method of wireless communication includes communicating information with a neighbor Node B in a subframe. The information is associated with uplink timing. The method includes communicating with a serving Node B in the subframe.
    Type: Application
    Filed: April 5, 2010
    Publication date: November 15, 2012
    Applicant: Qualcomm Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120287831
    Abstract: In a multi-threaded processor mobile device, power consumption is reduced by matching a number of active processing resources with the data rate capability of a serving base station. The number of active resources may be adjusted to increase the amount of time the mobile device is in an all-waits period, where its processors are all idle at the same time. Increasing the all-waits time increases power savings. The mobile device may reduce the number of active resources to reduce power consumption or may increase the number of active resources temporarily in order to increase an all-waits period. The mobile device may also operate in a low power state by adjusting its active resources and operating at a reduced data rate, which is communicated to a base station.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 15, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Steven D. Cheng, Tom Chin, Guangming Shi
  • Publication number: 20120281682
    Abstract: A method of wireless communication includes receiving a signal associated with a frequency for adjusting timing and adjusting the timing based on the frequency. The frequency is less than once every 8 subframes.
    Type: Application
    Filed: April 12, 2010
    Publication date: November 8, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120281678
    Abstract: Avoidance of uplink synchronization oscillation in TD-SCDMA systems begins when a user equipment receives a downlink SS command from a Node B. The user equipment obtains a previous uplink timing, which may be from a previous sub-frame associated with the downlink SS command. The user equipment would obtain this previous sub-frame associated with the SS command directly from the Node B as an identification of the Node B's sub-frame delay. The user equipment will then calculate the uplink timing for its next updated uplink signal by combining the previous uplink timing with the synchronization adjustment associated with the SS command. The user equipment then transmits its next uplink signal using the new uplink timing.
    Type: Application
    Filed: March 24, 2010
    Publication date: November 8, 2012
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120275436
    Abstract: Certain aspects of the present disclosure propose techniques for processing received downlink synchronization shift commands for timing adjustments of uplink transmissions in Time Division Synchronous Code Division Multiple Access (TD-SCDMA) wireless systems.
    Type: Application
    Filed: March 22, 2010
    Publication date: November 1, 2012
    Applicant: QUALCOMM Intercorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120275380
    Abstract: Certain aspects of the present disclosure propose techniques for scheduling paging intervals in a multimode terminal (MMT) whenever a paging interval conflict between two different networks occurs. Certain aspects provide a method for communicating, by an MMT, with first and second networks via first and second radio access technologies (RATs), such as Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and Code Division Multiple Access (CDMA) 1×RTT (Radio Transmission Technology), Evolution-Data Optimized (EVDO), or Wideband CDMA (WCDMA). The method generally includes determining that an overlap will occur between a first paging interval of the first network and a second paging interval of the second network, selecting between the first and second paging intervals based on at least one parameter associated with the first and second paging intervals, and detecting a message associated with paging based on the selected paging interval.
    Type: Application
    Filed: April 12, 2010
    Publication date: November 1, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120275437
    Abstract: Certain aspects of the present disclosure propose techniques for utilizing synchronization shift (SS) bits in Time Division Synchronous Code Division Multiple Access (TD-SCDMA) based uplink communications. The SS bits can be used for various purposes different from indicating timing of transmissions from a Node B to a user equipment.
    Type: Application
    Filed: March 22, 2010
    Publication date: November 1, 2012
    Applicant: Qualcomm Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120275329
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which the method of wireless communication includes identifying a reference cell; selecting a plurality of candidate cells based on a criteria; determining a characteristic for the reference cell and the plurality of candidate cells; and setting a position based on the determined characteristic.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 1, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120275433
    Abstract: Physical layer bits in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system control a baton handover. A method for enabling a baton handover from a source cell to a target cell includes tuning an uplink from a source channel of the source cell to a target channel of the target cell. The method also includes receiving a physical layer downlink switch command to switch a downlink from the source cell to the target cell. The method further includes tuning the downlink from the source channel of the source cell to the target channel of the target cell, in response to the physical layer downlink switch command, thus implementing the handover from the source cell to the target cell.
    Type: Application
    Filed: April 5, 2010
    Publication date: November 1, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee
  • Publication number: 20120275448
    Abstract: Certain aspects of the present disclosure propose techniques for resolving paging interval conflicts between two different radio access technology (RAT) paging intervals and for avoiding missing paging messages for a multimode terminal (MMT). Certain aspects provide a method for detecting messages associated with paging, by an MMT supporting multiple-input multiple-output (MIMO), from first and second networks using first and second RATs, such as Time Division Synchronous Code Division Multiple Access (TD-SCDMA) and Code Division Multiple Access (CDMA) 1xRTT (Radio Transmission Technology), Evolution-Data Optimized (EVDO), or Wideband CDMA (WCDMA). The method generally includes using a first MIMO receive chain of the MMT to detect a first message associated with paging from the first network and simultaneously using a second MIMO receive chain of the MMT, different from the first receive chain, to detect a second message associated with paging from the second network.
    Type: Application
    Filed: April 7, 2010
    Publication date: November 1, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Tom Chin, Guangming Shi, Kuo-Chun Lee