Patents by Inventor Ajith T. Payyappilly
Ajith T. Payyappilly 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: 9414429Abstract: Techniques for maintaining an always-on data session for an access terminal are described. Messages to keep alive the data session may be sent using non-traffic channels to avoid bringing up traffic channels just to send these messages. In one design, an access network may send a first message (e.g., a RouteUpdateRequest message) on a first non-traffic channel (e.g., a control channel) to the access terminal. The access terminal may return a second message (e.g., a RouteUpdate message) on a second non-traffic channel (e.g., an access channel) to the access network. The access network may then send a third message (e.g., for an Echo-Request) on the first non-traffic channel over a smaller area covering an approximate location of the access terminal, which may be determined based on the second message. The access terminal may return a fourth message (e.g., for an Echo-Reply) on the second non-traffic channel to the access network.Type: GrantFiled: July 30, 2007Date of Patent: August 9, 2016Assignee: QUALCOMM IncorporatedInventors: Ajith T. Payyappilly, Lei Shen, Parag Arun Agashe, Reza Shahidi
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Patent number: 9195296Abstract: Apparatus and methods are disclosed for power optimization in a wireless device. The apparatus and methods effect monitoring the amount of data stored in a data buffer that buffers data input to and data output from a processor. Dependent on the amount of data stored in the buffers parameters of a control function, such as a Dynamic Clock and Voltage Scaling (DCVS) function are modified based on the amount of data stored in the data buffer. By modifying or pre-empting the parameters of the control function, which controls at least processor frequency, the processor can process applications more dynamically over default parameter settings, especially in situations where one or more real-time activities having strict time constraints for completion are being handled by the processor as evinced by increased buffer depth. As a result, power usage is further optimized as the control function is more responsive to processing conditions.Type: GrantFiled: September 23, 2010Date of Patent: November 24, 2015Assignee: QUALCOMM IncorporatedInventors: Reza Shahidi, Alex Kuang-Hsuan Tu, Brian J. Salsbery, Ajith T. Payyappilly, Xiaodong Chen
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Patent number: 9094462Abstract: Certain aspects of the present disclosure provide techniques for wireless communications, wherein distinct port partitions are assigned to processing entities on a user equipment device. Doing so provides the processing entities with concurrent access to the single PDN connection.Type: GrantFiled: July 13, 2011Date of Patent: July 28, 2015Assignee: QUALCOMM IncorporatedInventors: Suli Zhao, Srinivasan Balasubramanian, Ajith T. Payyappilly
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Patent number: 9049096Abstract: Techniques for routing data via lower layer paths through lower layers of a protocol stack are described. A lower layer path may be composed of a flow for packets, a link at a link layer, and a channel at a physical layer. A packet may be received from an application. A most preferred lower layer path for the packet may be selected from among at least one available lower layer path. The available lower layer path(s) may be arranged in an order of preference based on treatment of packets (e.g., best effort or QoS), protocols used at the link layer, channel types at the physical layer, and/or other factors. The packet may be sent via the selected lower layer path. A highest precedence lower layer path for the packet may be set up (e.g., in parallel) if this path is not among the at least one available lower layer path.Type: GrantFiled: June 15, 2007Date of Patent: June 2, 2015Assignee: QUALCOMM IncorporatedInventors: Uppinder S. Babbar, Ajith T. Payyappilly, Srinivas R. Mudireddy, Venkata Satish Kumar Vangala
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Patent number: 8982836Abstract: A method for maintaining IP context during an inter RAT handover of a UE between an eHRPD network and an LTE network may include delaying a transfer of an Internet Protocol context for at least one active packet data network until an IP address for an attach (PDN) Packet Data Network has been assigned and in the case where the Internet Protocol address for the Attach Packet Data Network is not assigned, initiating a detach operation from the LTE network without the user equipment losing the Internet Protocol context of the at least one active Packet Data Network.Type: GrantFiled: October 17, 2011Date of Patent: March 17, 2015Assignee: QUALCOMM IncorporatedInventors: Suli Zhao, Ajith T. Payyappilly, Shrawan K. Khatri, Siddharth D. Chitnis
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Patent number: 8953596Abstract: A broadband service is provided by allocating air interface resources in a wireless network that conforms to the 1xEV-DO standard. The air interface resources are characterized by various quality of service (QoS) parameters, such as bandwidth, packet priority and error rate. Packetized information is transmitted in data flows between a base station and cell phones. A particular QoS level is reserved for each of the data flows that support the broadband service. An operating system on a cell phone monitors one data flow as well as another data flow in the opposite direction. When the base station runs out of an air interface resource, the base station suspends the QoS reservation of a data flow. The operating system determines that the QoS reservation in one direction has been suspended and sends an unsolicited message to the base station releasing the QoS reservation in the opposite direction, thereby conserving network resources.Type: GrantFiled: January 6, 2006Date of Patent: February 10, 2015Assignee: QUALCOMM IncorporatedInventors: Ajith T. Payyappilly, Sriram Nagesh Nookala, Vipin A. Sali
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Patent number: 8903393Abstract: The disclosure relates to techniques for maintaining minimum quality of service (QoS) communication sessions with a wireless communication device (WCD) over a data-based communication network during a hard handoff between access networks for the WCD. More specifically, the techniques determine whether a closed connection between the WCD and a first access network during a minimum QoS communication session is due to a hard handoff between the first access network and a second access network. In the case of a hard handoff, the techniques maintain open QoS reservations associated with data flows included in the minimum QoS communication session for a predetermined period of time to enable a new connection to be established between the WCD and a second access network. The techniques described herein may especially useful when performing a voice over Internet Protocol (VoIP) call over an Evolution-Data Optimized (EVDO) communication network.Type: GrantFiled: August 7, 2007Date of Patent: December 2, 2014Assignee: QUALCOMM IncorporatedInventors: Ajith T. Payyappilly, Lei Shen, Parag Arun Agashe, Reza Shahidi
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Patent number: 8891380Abstract: Systems and methods for synchronizing filter records between a mobile device and a network node are described herein. Upon detection of a precedence contention when installing filters at the network node, a synchronization command can be initiated to synchronize the filter records between the mobile device and the network node.Type: GrantFiled: February 24, 2011Date of Patent: November 18, 2014Assignee: QUALCOMM IncorporatedInventors: Shrawan K. Khatri, Ajith T. Payyappilly
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Publication number: 20140287796Abstract: A method for inter-modem coordination is described. A first data connection to a network in a first network coverage area using a first air interface provided by a first modem is established. The method also includes detecting a second network coverage area with a second air interface provided by a second modem. A data call state of the second modem is determined by the first modem. The first data connection to the network by the first modem is terminated when the data call state of the second modem is no data call. A data call state of the first modem is determined by the second modem. A second data connection to the network using the second air interface provided by the second modem is initiated when the data call state of the first modem is no data call.Type: ApplicationFiled: June 9, 2014Publication date: September 25, 2014Inventors: Suli ZHAO, Ajith T. PAYYAPPILLY, Vaibhav KUMAR
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Patent number: 8817600Abstract: A wireless communications device is configured to establish a radio level session with a network at a relatively high or highest protocol level among a plurality of protocol levels supported. Upon failures in establishing, or during, a network level data session, the radio level session is closed. Thereafter, the device re-attempts to establish the network level session at a lower, fallback protocol level, by pretending it is a legacy device incapable of supporting the high protocol level. In this manner, the network is likely to follow a different procedure in establishing data communications, whereby an error that caused the failure is less likely to be repeated. As examples, error conditions in eHRPD data sessions result in fallback to HRPD or 1xRTT data sessions. A network based alternative embodiment implements protocol fallback via appropriate fallback instructions to the wireless device.Type: GrantFiled: November 18, 2009Date of Patent: August 26, 2014Assignee: QUALCOMM IncorporatedInventors: Ajith T. Payyappilly, Srinivasan Balasubramanian
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Patent number: 8787239Abstract: A method and apparatus for enabling a data call in a wireless network comprising determining if the data call in a packet app is a relay model tethered data call; and determining if default link flow type Flow 1 is deactivated for the data call. In one aspect, one or more of the following is also included: determining if the type of the data call is CDMA 2000 1X, IS-95A/B, EVDO Rev. 0, EVDO Rev. A or EVDO Rev. B; determining the type of the packet app; requesting to deactivate default link flow type Flow 1; and determining if default link flow type Flow 1 is deactivated for the data call; and wherein the type of the packet app is of a default packet app (DPA), a multi-flow packet app (MPA), an enhanced multi-flow packet app (EMPA) or a multi-link multi-flow packet app (MMPA).Type: GrantFiled: July 31, 2008Date of Patent: July 22, 2014Assignee: QUALCOMM IncorporatedInventors: Ajith T. Payyappilly, Lei Shen
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Patent number: 8780965Abstract: A method for inter-modem coordination is described. A first data connection to a network in a first network coverage area using a first air interface provided by a first modem is established. The method also includes detecting a second network coverage area with a second air interface provided by a second modem. A data call state of the second modem is determined by the first modem. The first data connection to the network by the first modem is terminated when the data call state of the second modem is no data call. A data call state of the first modem is determined by the second modem. A second data connection to the network using the second air interface provided by the second modem is initiated when the data call state of the first modem is no data call.Type: GrantFiled: June 29, 2011Date of Patent: July 15, 2014Assignee: QUALCOMM IncorporatedInventors: Suli Zhao, Ajith T. Payyappilly, Vaibhav Kumar
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Patent number: 8516101Abstract: Techniques for managing resources on a wireless device are described. In an aspect, congestion of resources on the wireless device may be detected. If any resources are deemed to be congested, then congestion of the congested resources may be relieved by controlling utilization of the congested resources by at least one client. In one design, flow control may be performed for at least one data flow to relieve congestion of the congested resources. A pattern indicative of when to send messages enabling data transmission and when to send messages disabling data transmission may be selected. Messages may then be sent in accordance with the pattern to control transmission of data for the at least one data flow. Another pattern with a higher ON fraction or a lower ON fraction may be selected based on usage of the congested resources.Type: GrantFiled: February 18, 2010Date of Patent: August 20, 2013Assignee: QUALCOMM IncorporatedInventors: Srinivasan Balasubramanian, Ajith T. Payyappilly, Reza Shahidi, Kevin S. Seltmann, Suli Zhao
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Publication number: 20130094471Abstract: A method for maintaining IP context during an inter RAT handover of a UE between an eHRPD network and an LTE network may include delaying a transfer of an Internet Protocol context for at least one active packet data network until an IP address for an attach (PDN) Packet Data Network has been assigned and in the case where the Internet Protocol address for the Attach Packet Data Network is not assigned, initiating a detach operation from the LTE network without the user equipment losing the Internet Protocol context of the at least one active Packet Data Network.Type: ApplicationFiled: October 17, 2011Publication date: April 18, 2013Applicant: QUALCOMM INCORPORATEDInventors: Suli Zhao, Ajith T. Payyappilly, Shrawan K. Khatri, Siddharth D. Chitnis
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Patent number: 8385350Abstract: Techniques to detect for end of service using dynamic inactivity timer thresholds are described. An access terminal establishes a radio connection for one or more applications. Data and signaling for the application(s) may be sent on one or more first flows (e.g., RLP flows) that may carry any number of second flows (e.g., IP flows). The access terminal determines a dynamic inactivity timer threshold for each first flow, e.g., based on at least one inactivity timer threshold for at least one second flow mapped to that first flow. The access terminal determines whether each first flow is inactive based on the inactivity timer threshold for that first flow, e.g., declares each first flow to be inactive if no activity is detected on that first flow for a period exceeding the inactivity timer threshold. The access terminal closes the radio connection when all first flow(s) are determined to be inactive.Type: GrantFiled: May 3, 2007Date of Patent: February 26, 2013Assignee: QUALCOMM IncorporatedInventors: Reza Shahidi, Ajith T. Payyappilly, Srinivasan Balasubramanian, Lei Shen
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Publication number: 20130016668Abstract: Certain aspects of the present disclosure provide techniques for wireless communications, wherein distinct port partitions are assigned to processing entities on a user equipment device. Doing so provides the processing entities with concurrent access to the single PDN connection.Type: ApplicationFiled: July 13, 2011Publication date: January 17, 2013Applicant: QUALCOMM INCORPORATEDInventors: Suli Zhao, Srinivasan Balasubramanian, Ajith T. Payyappilly
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Publication number: 20120198081Abstract: Systems, methods and apparatus for quality of service (QoS) flows in a communication system are provided. In one aspect a method is providing for establishing a QoS flow for an application in a user equipment device. The method includes receiving QoS information from one of an application and a network. The method further includes establishing a QoS communication flow for the application based on the received information. The method also includes receiving QoS information from the other of the application and the network and modifying the established QoS communication flow based on the additional information.Type: ApplicationFiled: January 25, 2012Publication date: August 2, 2012Applicant: QUALCOMM IncorporatedInventors: Suli Zhao, Srinivasan Balasubramanian, Ajith T. Payyappilly
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Patent number: 8218530Abstract: More seamless handoff between access networks is achieved by saving session information for each access network upon being handed off from the access network and invoking the saved session information upon being handed back to the access network. An access terminal establishes a first session with a first access network, which may entail performing QoS negotiation with the first access network and setting up packet filters at a packet data gateway. The access terminal exchanges data with the first access network in accordance with the configuration of the first session. The access terminal saves the first session configuration after being handed off to a second access network, establishes a second session with the second access network, and exchanges data with the second access network in accordance with the configuration of the second session. The access terminal uses the saved first session configuration upon being handed back to the first access network.Type: GrantFiled: June 28, 2006Date of Patent: July 10, 2012Assignee: QUALCOMM IncorporatedInventors: Ajith T. Payyappilly, Rajeev S. Kurundkar, Sriram Nagesh Nookala, Vipin A. Sali
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Publication number: 20120027059Abstract: A method for inter-modem coordination is described. A first data connection to a network in a first network coverage area using a first air interface provided by a first modem is established. The method also includes detecting a second network coverage area with a second air interface provided by a second modem. A data call state of the second modem is determined by the first modem. The first data connection to the network by the first modem is terminated when the data call state of the second modem is no data call. A data call state of the first modem is determined by the second modem. A second data connection to the network using the second air interface provided by the second modem is initiated when the data call state of the first modem is no data call.Type: ApplicationFiled: June 29, 2011Publication date: February 2, 2012Applicant: QUALCOMM INCORPORATEDInventors: Suli Zhao, Ajith T. Payyappilly, Vaibhav Kumar
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Publication number: 20110213897Abstract: Systems and methods for releasing stale connection contexts are provided herein. The systems and methods help to ensure that connection records between mobile devices and communications nodes are synchronized so as to avoid and/or fix stale connection contexts.Type: ApplicationFiled: February 9, 2011Publication date: September 1, 2011Applicant: QUALCOMM IncorporatedInventors: Suli Zhao, Srinivasan Balasubramanian, Ajith T. Payyappilly