Patents by Inventor Xiaoxin Qiu

Xiaoxin Qiu 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: 10383021
    Abstract: Systems and methods of handling satellite channel and LTE coexistence are provided. A first device can identify at least one first frequency band. The first device can determine that at least one second frequency band of a plurality of second frequency bands overlaps with the at least one first frequency band. In response to determining that the at least one second frequency band overlaps with the at least one first frequency band, the first device transmits a message including an identifier of the first device and an indication of the at least one second frequency band to a second device. The second device receives the message. The second device, in response to receiving a channel request from the first device, allocates, from the plurality of second frequency bands, a second frequency band different from the at least one second frequency band.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 13, 2019
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Walid Nabhane, Xiaoxin Qiu, Jason C. Demas, Pascal G. Finkenbeiner
  • Publication number: 20180317149
    Abstract: Systems and methods of handling satellite channel and LTE coexistence are provided. A first device can identify at least one first frequency band. The first device can determine that at least one second frequency band of a plurality of second frequency bands overlaps with the at least one first frequency band. In response to determining that the at least one second frequency band overlaps with the at least one first frequency band, the first device transmits a message including an identifier of the first device and an indication of the at least one second frequency band to a second device. The second device receives the message. The second device, in response to receiving a channel request from the first device, allocates, from the plurality of second frequency bands, a second frequency band different from the at least one second frequency band.
    Type: Application
    Filed: June 29, 2018
    Publication date: November 1, 2018
    Applicant: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. .LTD.
    Inventors: Walid Nabhane, Xiaoxin Qiu, Jason C. Demas, Pascal G. Finkenbeiner
  • Patent number: 10021615
    Abstract: Systems and methods of handling satellite channel and LTE coexistence are provided. A first device can identify at least one first frequency band. The first device can determine that at least one second frequency band of a plurality of second frequency bands overlaps with the at least one first frequency band. In response to determining that the at least one second frequency band overlaps with the at least one first frequency band, the first device transmits a message including an identifier of the first device and an indication of the at least one second frequency band to a second device. The second device receives the message. The second device, in response to receiving a channel request from the first device, allocates, from the plurality of second frequency bands, a second frequency band different from the at least one second frequency band.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: July 10, 2018
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Walid Nabhane, Xiaoxin Qiu, Jason C. Demas, Pascal G. Finkenbeiner
  • Publication number: 20170245189
    Abstract: Systems and methods of handling satellite channel and LTE coexistence are provided. A first device can identify at least one first frequency band. The first device can determine that at least one second frequency band of a plurality of second frequency bands overlaps with the at least one first frequency band. In response to determining that the at least one second frequency band overlaps with the at least one first frequency band, the first device transmits a message including an identifier of the first device and an indication of the at least one second frequency band to a second device. The second device receives the message. The second device, in response to receiving a channel request from the first device, allocates, from the plurality of second frequency bands, a second frequency band different from the at least one second frequency band.
    Type: Application
    Filed: March 21, 2016
    Publication date: August 24, 2017
    Inventors: Walid Nabhane, Xiaoxin Qiu, Jason C. Demas, Pascal G. Finkenbeiner
  • Patent number: 9713016
    Abstract: In some aspects, the disclosure is directed to methods and systems for dense small cell deployment. In one or more embodiments, a plurality of small cells is grouped into a first group of small cells having a first power level and a second group of small cells having a second power level. In one or more embodiments, each power level in the first set of power levels is greater than each power level in the second set of power levels. In one or more embodiments, the small cells of the first group performs frequency domain inter-cell interference coordination (ICIC) between the small cells of the first group. In one or more embodiments, the small cells of the second group performs time domain ICIC with the small cells in the first group. In one or more embodiments, the small cells of the first group use a same almost blank subframe (ABS) pattern.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: July 18, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Xiaoxin Qiu, Guosen Yue, Sungeun Lee, Hongwei Kong
  • Publication number: 20160286408
    Abstract: In some aspects, the disclosure is directed to methods and systems for dense small cell deployment. In one or more embodiments, a plurality of small cells is grouped into a first group of small cells having a first power level and a second group of small cells having a second power level. In one or more embodiments, each power level in the first set of power levels is greater than each power level in the second set of power levels. In one or more embodiments, the small cells of the first group performs frequency domain inter-cell interference coordination (ICIC) between the small cells of the first group. In one or more embodiments, the small cells of the second group performs time domain ICIC with the small cells in the first group. In one or more embodiments, the small cells of the first group use a same almost blank subframe (ABS) pattern.
    Type: Application
    Filed: June 30, 2015
    Publication date: September 29, 2016
    Inventors: Xiaoxin Qiu, Guosen Yue, Sungeun Lee, Hongwei Kong
  • Patent number: 9426685
    Abstract: A UE, in an idle mode, receives pilot signals and synchronization signals from a serving cell and neighbor cells comprising neighbor cells listed and/or unlisted in a neighboring cell list. The UE validates each of the serving cell, the listed neighbor cells and the unlisted neighbor cells from the received signals. The UE performs cell measurement on the listed cells as well as the unlisted cells for multipath profiles and associated power levels. In instances where number of attempts of the cell measurements on the unlisted cells exceeds a threshold value, the UE may validate presence of the unlisted cells. The best available cell is selected from the listed cells and the unlisted for the UE to camp on. I/Q samples of the received signals are stored while measuring or monitoring the cells. The stored I/Q samples may be utilized to carry out baseband procedures through offline processing.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: August 23, 2016
    Assignee: Broadcom Corporation
    Inventors: Vikas Paliwal, Xiaoxin Qiu, Zhijun Gong
  • Patent number: 9277499
    Abstract: Idle mode power consumption reduction in wireless communications. Within a wireless communication device that is operative to communicate with any one of a number of servicing cells, paging broadcasts from more than one of these servicing cells are received and undergo only a limited amount of processing before being stored for use in subsequent processing that may be performed later. This partitioned processing allows the turning off of certain components that are not needed and/or no longer needed for determining the system frame numbers associated with various servicing cells to effectuate timing synchronization. Certain modules within such a wireless communication device may perform processing using the full capabilities of the wireless communication device to generate initially processed signal, and then after such signals are stored, then only partial processing capability of the wireless communication device may be employed, even though perhaps being slower, to complete the processing.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: March 1, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Vikas Paliwal, Xiaoxin Qiu, Zhijun Gong, Rami Mehio, Arun Kumar Visvanath
  • Patent number: 9072035
    Abstract: A multiple-subscriber identity module (multi-SIM) multi-standby communication device includes a single operating system (OS) and a single radio resource unit that is shared by multiple virtual modems (VMs) within a virtual modem framework (VMF). The OS maps VM tasks of the multiple VM to OS resource spaces according to corresponding VM IDs. which may be embedded in global variables utilized in the single OS to access OS resources. The single OS may run the mapped VM tasks utilizing OS resources in the OS resource spaces. The OS may run VM tasks utilizing OS resources in OS resource spaces identified by corresponding VM IDs.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: June 30, 2015
    Assignee: Broadcom Corporation
    Inventors: Zhijun Gong, Xiaoxin Qiu, Yuan Liu, Yaxin Cao, Yongqian Wang, Stephen Richards
  • Patent number: 8873465
    Abstract: A baseband processing module of a base station includes a Turbo decoding module. The Turbo decoding module decodes a Turbo code word to produce one or more Media Access Control (MAC) packet(s) carried by the turbo decode word. Each MAC packet includes a MAC packet header and the MAC packet payload, which carries one or more Radio Link Control (RLC) Packet Data Units (PDUs). The Turbo decoding module decodes the MAC packet header to determine boundaries of the PDUs carried in the MAC packet payload. The Turbo decoding module decodes RLC PDU headers and RLC PDU payloads of the RLC PDUs. The Turbo decoding module writes the decoded MAC packet header, the decoded RLC PDU headers, and the decoded RLC PDU payloads to memory in a word-aligned format. The Turbo decoding module may also operate in various other Turbo decoding modes.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: October 28, 2014
    Assignee: Broadcom Corporation
    Inventors: Xiaoxin Qiu, Li Fung Chang, Hui Luo, Srirang Ashok Lovlekar
  • Patent number: 8874167
    Abstract: A communication device comprises a single radio resource unit that is shared by a plurality of virtual modems (VMs), each uniquely associated with a single one of a plurality of SIM cards. Traffic related to the SIM cards are concurrently handled utilizing corresponding VMs. Available radio resource in the single radio resource unit are shared by the VMs based on corresponding VM states, namely, an active state, an idle state and a suspended state. VMs in an idle state concurrently monitor paging events and concurrently perform idle mode procedures such as location updating. VMs not related to an intended traffic are suspended. A VM related to the intended traffic is transitioned from an idle state to an active state to enable the communication for the intended traffic. Once the communication is complete, the suspended VMs are resumed to continue idle mode activities.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: October 28, 2014
    Assignee: Broadcom Corporation
    Inventors: Xiaoxin Qiu, Yuan Liu, Yaxin Cao, Zhijun Gong, Yongqian Wang, Stephen Richards
  • Patent number: 8665742
    Abstract: A method for improving the performance for a streaming service by link-adaptation and power-control in a wireless packet network such as an Enhanced General Packet Radio Services (EGPRS) cellular network is described. In particular, the effects of a combined link adaptation and power control scheme (referred to as an error-based scheme) for achieving a target error rate, which is non-zero but low enough so that limited retransmission and error concealment techniques are effective, is presented.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: March 4, 2014
    Assignee: Chanyu Holdings, LLC
    Inventors: Kin K. Leung, Kapil K. Chawla, Peter F. Driessen, Xiaoxin Qiu
  • Patent number: 8644286
    Abstract: Certain aspects of a method and system for a fast cell search using a primary synchronization channel (PSYNC) process in a multimode wideband code division multiple access (WCDMA) terminal are provided. A WCDMA frequency search or a global system for mobile communications (GSM) frequency search is performed based on a current radio access technology (RAT), received signal strength indication (RSSI) scan measurements, and PSYNC detection operations. The RSSI scan measurements may be averaged by making multiple measurements during a measurement period. At least part of the PSYNC detection operations may be performed during a remaining portion of the measurement period. WCDMA carrier frequencies may be marked in accordance with the results of the PSYNC detection operations. For GSM, some of the frequencies may be removed from the search based on the PSYNC marking while the remaining search frequencies may be ranked based on results from the RSSI scan measurements.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: February 4, 2014
    Assignee: Broadcom Corporation
    Inventors: Nelson Ray Sollenberger, Xiaoxin Qiu, Wei Luo
  • Patent number: 8630269
    Abstract: A wireless network includes transmission power and data rate adaptation based upon quality experienced by the user.
    Type: Grant
    Filed: March 26, 2011
    Date of Patent: January 14, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Li Fung Chang, Kapil K. Chawla, Justin Che-I Chuang, Xiaoxin Qiu
  • Publication number: 20130301507
    Abstract: Idle mode power consumption reduction in wireless communications. Within a wireless communication device that is operative to communicate with any one of a number of servicing cells, paging broadcasts from more than one of these servicing cells are received and undergo only a limited amount of processing before being stored for use in subsequent processing that may be performed later. This partitioned processing allows the turning off of certain components that are not needed and/or no longer needed for determining the system frame numbers associated with various servicing cells to effectuate timing synchronization. Certain modules within such a wireless communication device may perform processing using the full capabilities of the wireless communication device to generate initially processed signal, and then after such signals are stored, then only partial processing capability of the wireless communication device may be employed, even though perhaps being slower, to complete the processing.
    Type: Application
    Filed: July 22, 2013
    Publication date: November 14, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Vikas Paliwal, Xiaoxin Qiu, Zhijun Gong, Rami Mehio, Arun Kumar Visvanath
  • Patent number: 8493900
    Abstract: Idle mode power consumption reduction in wireless communications. Within a wireless communication device that is operative to communicate with any one of a number of servicing cells, paging broadcasts from more than one of these servicing cells are received and undergo only a limited amount of processing before being stored for use in subsequent processing that may be performed later. This partitioned processing allows the turning off of certain components that are not needed and/or no longer needed for determining the system frame numbers associated with various servicing cells to effectuate timing synchronization. Certain modules within such a wireless communication device may perform processing using the full capabilities of the wireless communication device to generate initially processed signal, and then after such signals are stored, then only partial processing capability of the wireless communication device may be employed, even though perhaps being slower, to complete the processing.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: July 23, 2013
    Assignee: Broadcom Corporation
    Inventors: Vikas Paliwal, Xiaoxin Qiu, Zhijun (Nick) Gong, Rami Mehio, Arun K. Visvanath
  • Publication number: 20130150032
    Abstract: User equipment includes techniques that may improve operation by selectively controlling access to particular radio access technologies (RATs) for the user equipment while it is operating in certain modes, such as idle mode. Once the user equipment is in a connected mode, and operating with significant uplink and\or downlink traffic activity, inter-RAT procedures can provide the benefits of access to multiple RATs. This technique is useful in many different environments, such as an environment that is predominantly 2G or 3G with 4G hot spot coverage. This technique may also be useful for providing enhanced operations in 2G/3G capable dual SIM user equipment running in a camped mode or other modes. The technique is not limited to 2G/3G/4G or any other particular standards, but may apply to any standards in a sequence of evolving or incrementally improving standards.
    Type: Application
    Filed: May 22, 2012
    Publication date: June 13, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: GIRIDHAR PATTASWAMY, NAVIN K. KARRA, ABHISHEK PANDIT, STEPHEN J. RICHARDS, YONGQIAN WANG, XIAOXIN QIU, YUAN LIU, ZHIJUN GONG, YAXIN CAO
  • Publication number: 20130150014
    Abstract: Systems and methods are presented to support operation of a multiple subscriber identity module (SIM) device. A first SIM may monitor paging indicators while a second SIM performs a data transfer or voice call. During the second SIM's data transfer or voice call, paging transition times are identified to transition communication resources to the first SIM for use in monitoring paging indicators. The transition time may be short so as to limit the impact on the second SIM's data transfer or voice call. When the first SIM receives a paging indicator indicating an incoming call, the device may retrieve caller identification information of the incoming call and automatically reject the incoming call. The communication resource may be returned to the second SIM to continue the data transfer or voice call.
    Type: Application
    Filed: July 13, 2012
    Publication date: June 13, 2013
    Applicant: Broadcom Corporation
    Inventors: Zhijun Gong, Yongqian Wang, Xiaoxin Qiu, Naveen Palle Venkata, Suraj Singh, Sanjeev K. Sharma, Stephen J. Richards
  • Patent number: 8249520
    Abstract: The present invention implements a method and system for dynamically adapting the modulation and coding scheme for radio links in a wireless communications network based on a retransmission environment model in order to maximize throughput and most efficiently allocate bandwidth resources. The present invention encompasses a refined calculus and methodology for deriving the link adaptation thresholds in a retransmission environment using a complex model and analysis of the retransmission environment. The present invention holds particular application for wireless data communications as opposed to real time data services because it is based on a retransmission model applicable primarily for data services. A critical component of this new link adaptation system is a “no transmission” cutoff mode that is selected for SIR below a base threshold value. This new mode prevents system instability and misallocation of bandwidth in a wireless communication system.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 21, 2012
    Assignee: AT&T Intellectual Property II, LP
    Inventors: Justin Che-I Chuang, Xiaoxin Qiu
  • Publication number: 20120015653
    Abstract: A UE, in an idle mode, receives pilot signals and synchronization signals from a serving cell and neighbor cells comprising neighbor cells listed and/or unlisted in a neighboring cell list. The UE validates each of the serving cell, the listed neighbor cells and the unlisted neighbor cells from the received signals. The UE performs cell measurement on the listed cells as well as the unlisted cells for multipath profiles and associated power levels. In instances where number of attempts of the cell measurements on the unlisted cells exceeds a threshold value, the UE may validate presence of the unlisted cells. The best available cell is selected from the listed cells and the unlisted for the UE to camp on. I/Q samples of the received signals are stored while measuring or monitoring the cells. The stored I/Q samples may be utilized to carry out baseband procedures through offline processing.
    Type: Application
    Filed: August 5, 2010
    Publication date: January 19, 2012
    Inventors: Vikas Paliwal, Xiaoxin Qiu, Zhijun Gong