Patents by Inventor Shyamal Ramachandran

Shyamal Ramachandran 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: 11166202
    Abstract: This disclosure provides systems, methods, apparatuses and computer-readable medium for wireless communication. In some aspects, a user equipment (UE) may receive, from a first base station (BS) associated with a fifth generation New Radio (5G NR) radio access technology (RAT), a command of mobility from the 5G NR RAT to a second RAT. The UE may determine that the command of mobility is for voice fallback. The UE may transmit, to a second BS associated with the second RAT and based at least in part on determining that the command of mobility is for voice fallback, a radio resource control (RRC) connection request communication for attempting to communicatively connect with the second BS for voice fallback.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: November 2, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Xipeng Zhu, Masato Kitazoe, Gavin Bernard Horn, Shyamal Ramachandran, Arvind Vardarajan Santhanam, Tom Chin, Min Wang, Kuo-Chun Lee
  • Patent number: 11122480
    Abstract: A method and apparatus for selecting an access point (AP) for providing a service at a user equipment (UE). The example method may identify, by a user equipment (UE), a first AP available for communication. The example method may determine, by the UE, whether the first AP is suitable based, at least in part, on an indication for the first AP in an AP history table stored in a memory of the UE, wherein the indication is based on UE-determined metrics determined during one or more prior communications between the UE and the first AP. The example method may also include establishing communication between the UE and the first AP, in response to determining that the first AP is suitable.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: September 14, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Kirankumar Bhoja Anchan, Srinivasan Balasubramanian, Shyamal Ramachandran, Chinmay Dhodapkar, Devrath Chatterjee
  • Publication number: 20210136636
    Abstract: This disclosure provides systems, methods, apparatuses and computer-readable medium for wireless communication. In some aspects, a user equipment (UE) may receive, from a first base station (BS) associated with a fifth generation New Radio (5G NR) radio access technology (RAT), a command of mobility from the 5G NR RAT to a second RAT. The UE may determine that the command of mobility is for voice fallback. The UE may transmit, to a second BS associated with the second RAT and based at least in part on determining that the command of mobility is for voice fallback, a radio resource control (RRC) connection request communication for attempting to communicatively connect with the second BS for voice fallback.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Inventors: Xipeng ZHU, Masato KITAZOE, Gavin Bernard HORN, Shyamal RAMACHANDRAN, Arvind Vardarajan SANTHANAM, Tom CHIN, Min WANG, Kuo-Chun LEE
  • Patent number: 10893444
    Abstract: This disclosure provides systems, methods, apparatuses and computer-readable medium for wireless communication. In some aspects, a user equipment (UE) may receive, from a first base station (BS) associated with a fifth generation New Radio (5G NR) radio access technology (RAT), a command of mobility from the 5G NR RAT to a second RAT. The UE may determine that the command of mobility is for voice fallback. The UE may transmit, to a second BS associated with the second RAT and based at least in part on determining that the command of mobility is for voice fallback, a radio resource control (RRC) connection request communication for attempting to communicatively connect with the second BS for voice fallback.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: January 12, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Xipeng Zhu, Masato Kitazoe, Gavin Bernard Horn, Shyamal Ramachandran, Arvind Vardarajan Santhanam, Tom Chin, Min Wang, Kuo-Chun Lee
  • Publication number: 20200374761
    Abstract: This disclosure provides systems, methods, apparatuses and computer-readable medium for wireless communication. In some aspects, a user equipment (UE) may receive, from a first base station (BS) associated with a fifth generation New Radio (5G NR) radio access technology (RAT), a command of mobility from the 5G NR RAT to a second RAT. The UE may determine that the command of mobility is for voice fallback. The UE may transmit, to a second BS associated with the second RAT and based at least in part on determining that the command of mobility is for voice fallback, a radio resource control (RRC) connection request communication for attempting to communicatively connect with the second BS for voice fallback.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Xipeng ZHU, Masato KITAZOE, Gavin Bernard HORN, Shyamal RAMACHANDRAN, Arvind Vardarajan SANTHANAM, Tom CHIN, Min WANG, Kuo-Chun LEE
  • Patent number: 10750381
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may set a value associated with a delay budget report information element based at least in part on determining that the UE is to employ low latency communication with or via a base station. The UE may transmit a message, that includes the value associated with the delay budget report information element, to the base station to indicate that low latency communication is to be employed in association with a default bearer established between the UE and the base station. Numerous other aspects are provided.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: August 18, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Arnaud Meylan, Shyamal Ramachandran, Neha Goel
  • Publication number: 20200245195
    Abstract: This disclosure provides systems, methods, apparatuses and computer-readable medium for wireless communication. In some aspects, a user equipment (UE) may receive, from a first base station (BS) associated with a fifth generation New Radio (5G NR) radio access technology (RAT), a command of mobility from the 5G NR RAT to a second RAT. The UE may determine that the command of mobility is for voice fallback. The UE may transmit, to a second BS associated with the second RAT and based at least in part on determining that the command of mobility is for voice fallback, a radio resource control (RRC) connection request communication for attempting to communicatively connect with the second BS for voice fallback.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 30, 2020
    Inventors: Xipeng ZHU, Masato KITAZOE, Gavin Bernard HORN, Shyamal RAMACHANDRAN, Arvind Vardarajan SANTHANAM, Tom CHIN, Min WANG, Kuo-Chun LEE
  • Patent number: 10728870
    Abstract: Methods and apparatus are provided for avoiding attempts by a UE to attach to a RAT network when that RAT network is unavailable. According to certain aspects, the UE may detect scenarios when the RAT network is unavailable and take preemptive action to prevent the UE from attempting to acquire service on that RAT. For example, the UE may effectively remove that RAT from a list of supported RATs by sending a UE capability message indicating that RAT is not supported, which may prevent network-initiated transitions of the UE to that RAT. The UE may also remove the unavailable RAT from an internal list of supported RATs, which may prevent UE-initiated transitions to that RAT.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: July 28, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Abhishek Bhatnagar, Shyamal Ramachandran, Vitaly Drapkin, Vamsi Krishna Dokku, Hariharan Sukumar, Zhong Ren, Vidula Rajeev Kurundkar
  • Patent number: 10616123
    Abstract: In a particular aspect, an apparatus includes a de-jitter buffer configured to store a plurality of audio packets received from a source device. The apparatus includes de-jitter buffer control circuitry configured to adjust at least one bound of a target delay range associated with the de-jitter buffer based at least in part on an estimated jitter associated with the plurality of audio packets, an estimated underflow rate associated with the plurality of audio packets, or both. The apparatus includes a processor configured to generate an audio signal based on the plurality of audio packets stored at the de-jitter buffer. The apparatus includes a receiver configured to receive the plurality of audio packets via a network from the source device. The apparatus further includes a speaker configured to output the audio signal.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Min Wang, Shyamal Ramachandran
  • Publication number: 20190394688
    Abstract: Methods, systems, and devices for wireless communications are described that provide for a user equipment (UE) to report packet switched voice call capabilities to a base station. The UE may explicitly report voice call capabilities via one or more system-level parameters that are transmitted to the base station. The base station may operate in a first radio access network (RAN), such as a 5G or new radio (NR) RAN. In cases where the UE indicates a capability for packet switched voice calls via the first RAN, one or more voice calls may be established with the UE via the first RAN. In cases where the UE indicates that it is not capable of packet switched voice calls via the first RAN, the UE may fall back to a different RAN (e.g., a 4G or LTE RAN, a 3G RAN, or a 2G RAN) for voice calls.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 26, 2019
    Inventors: Xipeng Zhu, Masato Kitazoe, Tom Chin, Gavin Bernard Horn, Haris Zisimopoulos, Shyamal Ramachandran, Min Wang, Aziz Gholmieh, Ajith Payyappilly, Luis Fernando Brisson Lopes
  • Publication number: 20190371345
    Abstract: A method of smart coding mode switching includes receiving a first data including a primary copy and a partial copy. The method includes determining if switching a coding mode from channel aware mode to non-channel aware mode may be advantageous. The method further includes transmitting a request to another device for coding mode switch in response to determination result. The method includes receiving and decoding of a second data that includes a primary copy.
    Type: Application
    Filed: June 4, 2018
    Publication date: December 5, 2019
    Inventors: Sarandeep BHATIA, Tony LEE, Shyamal RAMACHANDRAN, Bikash KARMAKAR, Abhijeet PRASAD
  • Patent number: 10475456
    Abstract: A method of smart coding mode switching includes receiving a first data including a primary copy and a partial copy. The method includes determining if switching a coding mode from channel aware mode to non-channel aware mode may be advantageous. The method further includes transmitting a request to another device for coding mode switch in response to determination result. The method includes receiving and decoding of a second data that includes a primary copy.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: November 12, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Sarandeep Bhatia, Tony Lee, Shyamal Ramachandran, Bikash Karmakar, Abhijeet Prasad
  • Publication number: 20190239097
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may set a value associated with a delay budget report information element based at least in part on determining that the UE is to employ low latency communication with or via a base station. The UE may transmit a message, that includes the value associated with the delay budget report information element, to the base station to indicate that low latency communication is to be employed in association with a default bearer established between the UE and the base station. Numerous other aspects are provided.
    Type: Application
    Filed: January 14, 2019
    Publication date: August 1, 2019
    Inventors: Arnaud MEYLAN, Shyamal RAMACHANDRAN, Neha GOEL
  • Publication number: 20190014050
    Abstract: In a particular aspect, an apparatus includes a de jitter buffer configured to store a plurality of audio packets received from a source device. The apparatus includes de-jitter buffer control circuitry configured to adjust at least one bound of a target delay range associated with the de-jitter buffer based at least in part on an estimated jitter associated with the plurality of audio packets, an estimated underflow rate associated with the plurality of audio packets, or both. The apparatus includes a processor configured to generate an audio signal based on the plurality of audio packets stored at the de jitter buffer. The apparatus includes a receiver configured to receive the plurality of audio packets via a network from the source device. The apparatus further includes a speaker configured to output the audio signal.
    Type: Application
    Filed: July 7, 2017
    Publication date: January 10, 2019
    Inventors: Min WANG, Shyamal RAMACHANDRAN
  • Publication number: 20180352489
    Abstract: A method and apparatus for selecting an access point (AP) for providing a service at a user equipment (UE). The example method may identify, by a user equipment (UE), a first AP available for communication. The example method may determine, by the UE, whether the first AP is suitable based, at least in part, on an indication for the first AP in an AP history table stored in a memory of the UE, wherein the indication is based on UE-determined metrics determined during one or more prior communications between the UE and the first AP. The example method may also include establishing communication between the UE and the first AP, in response to determining that the first AP is suitable.
    Type: Application
    Filed: April 24, 2018
    Publication date: December 6, 2018
    Inventors: Kirankumar Bhoja ANCHAN, Srinivasan BALASUBRAMANIAN, Shyamal RAMACHANDRAN, Chinmay DHODAPKAR, Devrath CHATTERJEE
  • Patent number: 9924402
    Abstract: Systems and methodologies are described herein that facilitate efficient transfer of quality of service (QoS) context during inter-radio access technology (RAT) handovers. In particular, techniques are described herein for establishing rules for whether a user equipment unit (UE) or an associated network should establish QoS for a mixed-mode application, identifying flow to bearer mappings when translating QoS across an inter-RAT handover, mapping QoS parameters of respective RATs, mitigating QoS depreciation upon multiple handovers, performing one or more actions if QoS is not acceptable in a new RAT, maintaining QoS during tunnel mode, and handling scenarios in which a UE moves between a RAT using network-initiated QoS and a RAT using UE-initiated QoS.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: March 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Thomas Klingenbrunn, Uppinder Singh Babbar, Srinivasan Balasubramanian, Shyamal Ramachandran, Arvind Swaminathan
  • Patent number: 9883477
    Abstract: An access terminal pre-registers with a second access network via a first access network to ensure a quick handover in the future. Frequent pre-registration attempts are avoided by implementing a hysteresis timer that restricts when a pre-registration process can be initiated. The hysteresis timer is started when pre-registration is initiated by the access terminal. No new pre-registration attempts are permitted if the hysteresis timer has not expired. An abort condition can cause the hysteresis timer to be aborted early, and a new pre-registration can be initiated. Access points in the first access network may be grouped into one or more pre-registration zones. If the access terminal moves from a first access point to a second access point, a new pre-registration is skipped if the first and second access points have the same pre-registration zone or the second access point is aware of the pre-registration zone for the first access point.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 30, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Shyamal Ramachandran, Thomas Klingenbrunn, Srinivasan Balasubramanian, Arvind Swaminathan
  • Patent number: 9743330
    Abstract: Methods and apparatuses for wireless communications are disclosed. For example, one method includes detecting a procedure and determining the procedure is a qualifying procedure. The method further includes detecting one or more handover events indicative of handover procedures, where the handover procedures interfere with the execution of the qualifying procedure. The method also includes comparing a radio frequency condition of the communication between a user equipment and a source access point with a threshold value based on the radio frequency condition and delaying handover procedures for a predefined time based on the comparison, wherein the delaying of the handover procedures occurs when the detected procedure is the qualifying procedure and when the radio frequency condition satisfies a threshold that is based on the threshold value.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: August 22, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Mutaz Zuhier Afif Shukair, Mouaffac Ambriss, Saad Zaidi, Salil Sawhney, Ritesh Suresh Gujarathi, Mukesh Kumar Mittal, Shyamal Ramachandran
  • Patent number: 9698927
    Abstract: Certain aspects of the present disclosure propose techniques for independently signaling features supported by a user equipment (UE) in different duplexing modes. The UE may be capable of communicating in frequency division duplexing (FDD) and time division duplexing (TDD) modes. The UE may obtain a FDD-specific feature group indicators (FGIs) set and a TDD-specific FGIs set, and signal at least one of the FDD-specific FGIs set or TDD-specific FGIs set. In addition, the UE may take one or more actions to reduce the likelihood of transitioning to a mode of operation that is different from its current mode of operation.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: July 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Thomas Klingenbrunn, Lorenzo Casaccia, Bhupesh Manoharlal Umatt, Pradeep Sagane Gowda, Daniel Amerga, Shyamal Ramachandran, Muralidharan Murugan, Swaminathan Sureshchandran, Dinesh Dharmaraju, Sudhir S. Halbhavi, Vitaly Drapkin, Raghu Narayan Challa
  • Patent number: 9699718
    Abstract: Certain aspects of the present disclosure propose a method for domain selection in a multimode UE. The domain selection method may be used to select domains for short message service (SMS) and/or voice service when the UE has camped on a packet switched (PS) network such as LTE. The proposed domain selection method may take into account UE capabilities, home operator preferences, visited operator preferences, visited network capabilities, and user settings.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: July 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Shyamal Ramachandran, Thomas Klingenbrunn