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).
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Patent number: 9743330Abstract: 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: GrantFiled: August 21, 2015Date of Patent: August 22, 2017Assignee: QUALCOMM IncorporatedInventors: Mutaz Zuhier Afif Shukair, Mouaffac Ambriss, Saad Zaidi, Salil Sawhney, Ritesh Suresh Gujarathi, Mukesh Kumar Mittal, Shyamal Ramachandran
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Patent number: 9698927Abstract: 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: GrantFiled: December 14, 2015Date of Patent: July 4, 2017Assignee: QUALCOMM IncorporatedInventors: 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
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Patent number: 9699718Abstract: 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: GrantFiled: April 11, 2011Date of Patent: July 4, 2017Assignee: QUALCOMM IncorporatedInventors: Shyamal Ramachandran, Thomas Klingenbrunn
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Patent number: 9615401Abstract: Methods and apparatus are provided for device configuration (e.g., feature segment loading and system selection). Certain aspects of the present disclosure generally relate to operating a user equipment (UE) in a first radio access network (RAN) with a first set of modem features that supports the first RAN, detecting a second RAN not supported by the first set of modem features, and rebooting the modem software to load a second set of modem features that supports the detected RAN. For certain aspects, the first RAN may be a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) network and the second RAN may be a Wideband-Code Division Multiple Access (W-CDMA) network or long term evolution network. This allows features to be loaded into memory (e.g., only) when they are required to support a detected RAN, rather than loading an entire image, thereby conserving DRAM and increasing efficiency.Type: GrantFiled: December 6, 2013Date of Patent: April 4, 2017Assignee: QUALCOMM INCORPORATEDInventors: Nieyan Geng, Gurvinder Singh Chhabra, Thomas Klingenbrunn, Shyamal Ramachandran, Francesco Grilli, Uttam Pattanayak
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Patent number: 9609552Abstract: Disclosed are methods and apparatus for improving the performance of a user equipment handover during a data call. In one aspect, a source base station determines to handover user equipment (UE) to a target base station. The source base station first determines whether the UE is in a data call prior to the handover. The source base station then modifies one or more of connected mode discontinuous reception (CDRX) and semi-persistent scheduling (SPS) parameters with the UE based on determining to handover the UE and determining that the UE is in the data call.Type: GrantFiled: March 13, 2013Date of Patent: March 28, 2017Assignee: QUALCOMM IncorporatedInventors: Shyamal Ramachandran, Thomas Klingenbrunn, Navid Ehsan, Amir Aminzadeh Gohari, Min Wang, Srinivasan Balasubramanian
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Patent number: 9603182Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus, e.g., a network entity, may establish a connection between a user equipment (UE) and a packet data network, designate the packet data network with an always-on status, and notify the UE, while the UE is in the idle mode, when a loss of connection with the packet data network is detected. The UE may be connected to another packet data network when the loss of the connection occurs. A service provided by the packet data network may be designated as having an always-on status and the UE may be notified when a loss of the service is detected.Type: GrantFiled: March 12, 2014Date of Patent: March 21, 2017Assignee: QUALCOMM IncorporatedInventor: Shyamal Ramachandran
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Publication number: 20170055197Abstract: 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: ApplicationFiled: August 21, 2015Publication date: February 23, 2017Inventors: Mutaz Zuhier Afif Shukair, Mouaffac Ambriss, Saad Zaidi, Salil Sawhney, Ritesh Suresh Gujarathi, Mukesh Kumar Mittal, Shyamal Ramachandran
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Patent number: 9578554Abstract: Certain aspects of the present disclosure relate to techniques for improving a circuit-switched fallback (CSFB) user experience. In aspects, methods and systems for autonomously returning a user equipment (UE) from a 2G (2nd generation)/3G (3rd generation) network to an LTE (Long Term Evolution) network are provided. The UE may store a flag to note whether a current circuit switched (CS) call in the 2G/3G network is a result of a CSFB. The UE, in response to detecting a termination of the current CS call in the 2G/3G network and determining that the terminated call was a CSFB call (e.g., from the status of the flag), may trigger a mobility mechanism to autonomously return the UE to the LTE network.Type: GrantFiled: September 14, 2012Date of Patent: February 21, 2017Assignee: QUALCOMM INCORPORATEDInventors: Bhupesh Manoharlal Umatt, Krishna Rao Mandadapu, Srinivasa Prasad Vangaru, Sathish Krishnamoorthy, Supratik Bhattacharjee, Joe Thomas, Thomas Klingenbrunn, Shyamal Ramachandran
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Patent number: 9459879Abstract: A wireless communication device for thermal mitigation with multiple processors is described. The wireless communication device includes a first communications processor that processes a data call. The wireless communication device also includes a second communications processor coupled to the first communications processor. The first communications processor performs a thermal mitigation operation by sending instructions to the second communications processor when at least one thermal threshold is reached. The second communications processor receives and executes the instructions.Type: GrantFiled: February 28, 2013Date of Patent: October 4, 2016Assignee: QUALCOMM IncorporatedInventors: Sudhendra Kumar Gupta, Reza Shahidi, Shyamal Ramachandran
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Patent number: 9456337Abstract: Methods and apparatus for wireless communication in a wireless communication network include maintaining a Public Land Mobile Network (PLMN) list and receiving an information request from a network, wherein the information request is associated with configuration parameters associated with the PLMN list. Aspects of the methods and apparatus configuring the UE based on the configuration parameters associated with the PLMN list. Aspects also include replying to the network that the UE is configured with the configuration parameters associated with the PLMN list.Type: GrantFiled: March 15, 2013Date of Patent: September 27, 2016Assignee: QUALCOMM IncorporatedInventors: Daniel Amerga, Qingxin Chen, Srivatsa V. Chivukula, Thawatt Gopal, Krishna Rao Mandadapu, Nitin Pant, Kiran KishanRao Patil, Sunil Suresh Patil, Shyamal Ramachandran, Swaminathan Sureshchandran, Ta Yan Siu, Venkata G. Potnuru
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Patent number: 9451641Abstract: Certain aspects of the present disclosure relate to methods and apparatus for improving data service availability. Certain aspects provide methods and apparatus for wireless communications by a UE including determining, while the UE is in a coverage area of a first network, that a connection to a second network, comprising a packet data network (PDN), is disconnected locally, and taking at least one action to avoid a rejection of a request to connect to the second network.Type: GrantFiled: March 6, 2013Date of Patent: September 20, 2016Assignee: QUALCOMM INCORPORATEDInventors: Shyamal Ramachandran, Thomas Klingenbrunn, Zhong Ren, Vitaly Drapkin
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Patent number: 9445321Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a user equipment performs an inter-radio access technology (RAT) mobility procedure from a first network to a second network while idle mode signaling reduction (ISR) is active, locally deactivates ISR in connection with completion of the inter-RAT mobility procedure, and initiates a location management procedure in the second network. Depending on the respective type of the first and second network, and the connection state of the UE with respect to the first network, the mobility procedure may be performed in response to a mobility command received from the first network, or in response to a mobility condition of the first network as detected by the UE.Type: GrantFiled: March 14, 2013Date of Patent: September 13, 2016Assignee: QUALCOMM IncorporatedInventors: Xipeng Zhu, Francesco Pica, Shyamal Ramachandran, Miguel Griot, Mungal Singh Dhanda, Masato Kitazoe, Wolfgang Granzow, Aziz Gholmieh
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Publication number: 20160255557Abstract: A method for voice/data hybrid mode within a user equipment (UE). The method includes detecting a first radio access technology (RAT) activity in response to a received first RAT suspend request for a second RAT tune-away. The method also includes adaptively performing the first RAT suspend request according to a predetermined priority of the detected first RAT activity and a second RAT tune-away activity. A receive chain is shared between a first RAT modem and a second RAT modem of the UE.Type: ApplicationFiled: May 9, 2016Publication date: September 1, 2016Inventors: Arvind SWAMINATHAN, Srinivasan BALASUBRAMANIAN, Thomas KLINGENBRUNN, Shyamal RAMACHANDRAN, Amit MAHAJAN
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Patent number: 9408052Abstract: Techniques are described for power conservation in emergency broadcast message reception in a wireless communications system. In accordance with a method for conserving power, one or more segments of an emergency broadcast message in an access stratum are received. The emergency broadcast message is identified as a duplicate emergency broadcast message based at least in part on one or more identifiers of the received one or more segments. The receipt of additional segments of the emergency broadcast message is terminated.Type: GrantFiled: December 11, 2013Date of Patent: August 2, 2016Assignee: QUALCOMM IncorporatedInventors: Vitaly Drapkin, Bhanu Kiran Janga, Shyamal Ramachandran, Ajit Gupta
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Patent number: 9398501Abstract: Aspects disclosed herein relate to determining frequencies for measuring cells in reselection. A set of frequencies over which to measure cells for reselection can be prioritized, wherein one or more first frequencies in the set of frequencies correspond to frequencies of previously visited closed subscriber group (CSG) cells, multimedia broadcast multicast services (MBMS) frequencies, etc. A command to deprioritize one or more second frequencies for reselection can be received, and it can be determined whether to deprioritize the one or more second frequencies in the prioritized set of frequencies based at least in part on the command. One or more cells can be measured over the prioritized set of frequencies based at least in part on respective priorities of the set of frequencies and may be evaluated for reselection.Type: GrantFiled: February 23, 2015Date of Patent: July 19, 2016Assignee: QUALCOMM IncorporatedInventors: Feilu Liu, Joshua Tennyson MacDonald, Srivatsa Venkata Chivukula, Vani Chaitanya Ginnela, Shyamal Ramachandran, Aziz Gholmieh
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Patent number: 9392514Abstract: Methods, apparatus, and computer program products for managing mobility in a multi-radio device are provided. One example method generally includes detecting that a first channel is not usable for communicating via a first radio access technology (RAT); receiving a message to redirect from a second channel to the first channel; determining the first channel is in a set of one or more blocked channels not usable for the first RAT; and in response to the determination, taking one or more actions. Another example method generally includes detecting that a first channel is not usable for communicating via a first RAT and providing an indication to a network that a user equipment (UE) no longer supports the first channel.Type: GrantFiled: July 29, 2015Date of Patent: July 12, 2016Assignee: QUALCOMM INCORPORATEDInventors: Shyamal Ramachandran, Thomas Klingenbrunn, Aziz Gholmieh, Amit Mahajan
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Patent number: 9386621Abstract: Circuit-switched fallback (CSFB) is a technique to deliver voice-services to a mobile, when the mobile is camped in a long-term evolution (LTE) network. This may be required when the LTE network does not support voice services natively. If a user makes a mobile originating (MO) call, or receives a mobile terminating (MT) call, the UE may inform the LTE network that the UE is leaving for the call by initiating a call setup procedure. However, there may be instances where the call setup procedure may fail. If the call setup procedure was either not initiated, or was initiated but failed, the UE may determine to search for a suitable CS RAT/cell on its own without instructions/commands from the network. Therefore, certain aspects of the present disclosure provide techniques for the UE to find CS services based on information collected at the UE.Type: GrantFiled: September 13, 2011Date of Patent: July 5, 2016Assignee: QUALCOMM INCORPORATEDInventors: Shyamal Ramachandran, Thomas Klingenbrunn
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Patent number: 9370043Abstract: A method for voice/data hybrid mode within a user equipment (UE). The method includes detecting a first radio access technology (RAT) activity in response to a received first RAT suspend request for a second RAT tune-away. The method also includes adaptively performing the first RAT suspend request according to a predetermined priority of the detected first RAT activity and a second RAT tune-away activity. A receive chain is shared between a first RAT modem and a second RAT modem of the UE.Type: GrantFiled: January 31, 2013Date of Patent: June 14, 2016Assignee: QUALCOMM INCORPORATEDInventors: Arvind Swaminathan, Srinivasan Balasubramanian, Thomas Klingenbrunn, Shyamal Ramachandran, Amit Mahajan
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Patent number: 9363844Abstract: Methods, systems, apparatuses and devices are described for managing a call during radio link failure. In one embodiment, radio link failure over a radio access technology may be detected during or after a call setup procedure. A public land mobile network and an equivalent public land mobile network may be selected. An initial search for cells of the radio access technology may be performed over the selected public land mobile network and the equivalent public land mobile network. The initial search may be performed once or twice based on a configurable parameter.Type: GrantFiled: August 22, 2014Date of Patent: June 7, 2016Assignee: QUALCOMM IncorporatedInventors: Cherng-Shung Hsu, Zhong Ren, Shyamal Ramachandran, Anisha Elizabeth Jonas, Vitaly Drapkin, Kanuganti Rajeswar Reddy, Abhishek Bhatnagar
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Patent number: 9344947Abstract: 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: GrantFiled: February 7, 2014Date of Patent: May 17, 2016Assignee: QUALCOMM IncorporatedInventors: Thomas Klingenbrunn, Uppinder Singh Babbar, Srinivasan Balasubramanian, Shyamal Ramachandran, Arvind Swaminathan