Patents by Inventor Rajat Prakash

Rajat Prakash 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: 9578515
    Abstract: Techniques are provided for frequency spectrum sharing that allows secondary operators to access a frequency band of a primary operator without interfering with the primary operator's use of the band, while ensuring service continuity for devices of the secondary operators. For example, there is provided a method that may involve identifying an outage on a first channel of a plurality of channels of a spectrum, wherein each of the plurality of channels is allocated to one of a plurality of operators. The method may involve migrating all mobile stations in communication over the first channel of the plurality of channels to at least one other channel of the plurality of channels during the outage.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: February 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Alan Barbieri, Rajat Prakash, Yi Huang
  • Patent number: 9549367
    Abstract: Systems and methodologies are described that facilitate transmitting access point types and/or restricted association parameters using broadcast signals, such as beacons, pilot signals, etc. The type or restricted association information can be indicated by one or more intrinsic aspects of the signal, such as specified parameters. In addition, the type or information can be indicated by one or more extrinsic signal aspects, such as frequency, interval, periodicity, etc. Using this information, a mobile device can determine whether an access point implements restricted association. If so, the mobile device can request an access point or related group identifier before determining whether to establish connection therewith. The identifier can be verified against a list of accessible access points and/or groups to make the determination.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: January 17, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Gavin B. Horn, Fatih Ulupinar, Parag A. Agashe, Rajat Prakash, Aamod Khandekar, Alexei Gorokhov, Naga Bhushan
  • Publication number: 20170006513
    Abstract: A method for redirecting a user equipment (UE) from a first network to a second network is described. The method includes determining, at a wireless access point of the first network, information for the UE about one or more mobile network operator (MNO) networks. The method also includes selecting the second network for redirection from among the one or more MNO networks based on the determined information. The method further includes sending the UE a redirection message that redirects the UE from the first network to the second network.
    Type: Application
    Filed: July 2, 2015
    Publication date: January 5, 2017
    Inventors: Jangwon Lee, Nam Soo Park, Rajat Prakash, Neil C. Carlson
  • Patent number: 9525610
    Abstract: A method and an apparatus for a light active estimation mechanism for backhaul management at a small cell base station are disclosed. For example, the method may include transmitting a first data packet from the small cell base station to a network entity, receiving a second data packet from the network entity in response to the transmission, calculating a time delay between the transmitting of the first data packet and the receiving of the second data packet, and determining whether or not a backhaul of the small cell base station is congested based on the calculated time delay. As such, light active estimation mechanism for backhaul management at a small cell base station may be achieved.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: December 20, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Farhad Meshkati, Rajat Prakash, Rashmin Ranjitsinh Anjaria, Sumeeth Nagaraja, Tao Chen, Vinod Viswanatha Menon, Sanjay Sridhar Kamath, Daehak Kim
  • Publication number: 20160365984
    Abstract: A method includes: establishing a telecommunication link between a device and a service provider system via a telecommunication network; receiving a device public key via the telecommunication network from the device at the service provider system, the device public key predating the establishment of the telecommunication link; verifying, at the service provider system, that the device stores a device private key in a secure storage area of the device, the device private key corresponding to the device public key, the device public key and the device private key being a cryptographic key pair; and authorizing, by the service provider system, sign-up of the device for service enrollment in response to verifying that the device stores the device private key in the secure storage area of the device.
    Type: Application
    Filed: June 10, 2015
    Publication date: December 15, 2016
    Inventors: Jangwon LEE, Anand PALANIGOUNDER, Soo Bum LEE, Rajat PRAKASH
  • Patent number: 9521565
    Abstract: The number of handover-related failures that occur in a communication system may be reduced by taking target access point conditions into account when declaring radio link failure and/or by delaying certain handover operations. In some aspects, criteria for radio link failure detection and access terminal-controlled mobility may take into account access point parameters related to neighboring cells that may be available as mobility targets. For example, filtering mechanisms for detecting radio link failure based on radio layer problem reports may also take into account the availability of various neighbor access points and their measured signal strengths. In addition, a handover command may be sent earlier than in conventional systems (e.g., the handover command may be sent even though the target access point is weaker than the source access point) and include an indication that instructs the access terminal to delay handover until a specified condition is met.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: December 13, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Nathan E. Tenny, Parag A. Agashe, Rajat Prakash
  • Patent number: 9497654
    Abstract: Methods and apparatus for communication at a network entity comprise receiving one or more technology layer measurements during a measurement period. The methods and apparatus further comprise determining that a first subset of the one or more technology layer measurements satisfies an adequate user equipment (UE) communication condition. In addition, the methods and apparatus comprise determining that a second subset of the one or more technology layer measurements satisfies at least one measurement threshold value. Moreover, the methods and apparatus comprise identifying a network entity conflict when the first subset of the one or more technology layer measurements satisfies the adequate UE communication condition and the second subset of the one or more technology layer measurements satisfies the at least one measurement threshold value.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: November 15, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Cong Shen, Andrei Dragos Radulescu, Rajat Prakash, Farhad Meshkati
  • Patent number: 9491672
    Abstract: A timer parameter used for transitioning between radio protocol states is adapted based on a change of a handover parameter. For example, as a direct result of a change in a handover parameter such as time-to-trigger, offset, or hysteresis, an inactivity timer that is used for switching an access terminal from a connected state to an idle state may be adapted. As another example, as a direct result of a change in a handover parameter, a radio link failure (RLF) timer that is used for switching an access terminal to an RLF state may be adapted.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 8, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Rajat Prakash, Mehmet Yavuz, Damanjit Singh, Andrei Dragos Radulescu
  • Publication number: 20160323798
    Abstract: Multiple data bearers may be configured for a user equipment (UE) for carrier aggregation and may be split among multiple evolved nodeBs (eNBs). The eNBs may be selected to serve the multiple data bearers for the UE based on various criteria such as channel conditions, loading, and the like. Various eNBs may be selected to serve data bearers for UE on a per data bearer basis, so that a particular eNB may be selected to serve each data bearer of the UE. Each data packet for the UE may then be sent via an appropriate data bearer.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 3, 2016
    Inventors: Gavin Bernard Horn, Jelena Damnjanovic, Rajat Prakash
  • Patent number: 9462559
    Abstract: Described herein are techniques for radio technology selection and power calibration in multi-RAT small cells. For example, the technique may involve determining, at an access point, path loss information for a circuit switched fallback failure location. The technique may involve building a path loss database over a time period from the path loss information and managing power or operation mode of a first RAT and a second RAT of the access point based on the path loss database.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: October 4, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Cong Shen, Farhad Meshkati, Rajat Prakash
  • Patent number: 9462499
    Abstract: Methods and apparatus for communication at a network entity comprise sending a measurement configuration message to a user equipment (UE) to configure the UE to perform one or more measurements during a specified measurement period. Additionally, the methods and apparatus comprise suspending, at the network entity, transmission of at least one configuration parameter to the UE during the specified measurement period, wherein the network entity is the serving network entity. Moreover, the methods and apparatus comprise receiving at least one measurement report message from the UE after the specified measurement period.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: October 4, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Cong Shen, Andrei Dragos Radulescu, Rajat Prakash, Farhad Meshkati
  • Publication number: 20160286447
    Abstract: Various aspects described herein relate to maintaining data continuity for a user equipment (UE). A request can be received at a first node of a first network from at least one of a second node of the first network or a second network to update a location of the UE. A type of the request can be determined based at least in part on an identifier in the request. The request can be acknowledged without instructing a third node of the first network or the second network to cancel a context of the UE based at least in part on the type of the request.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Inventors: Manu SHARMA, Rajat PRAKASH, Miguel GRIOT
  • Patent number: 9456336
    Abstract: Techniques for femtocell message delivery and network planning are described herein. A mobile device sends a registration request to an access point, such as a femtocell access point. If denied registration, the mobile device may return to service by a macro cell access point. A network entity, such as a femtocell gateway serving the access point, may determine an identification of the mobile device. The network entity may send the identification of mobile device and an identifier of the access point to an application server. The application server may create and send a targeted message to the mobile device based on the identification of mobile device and the identifier of the access point. The application server may determine a user count for the access point and facilitate network planning based on the user count.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: September 27, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Rajat Prakash, Christophe Chevallier
  • Patent number: 9451480
    Abstract: Methods and apparatus for communication comprise aspects that include performing a power management procedure for configuring a subset of network entities to receive one or more of downlink signal measurements and/or one or more uplink signal measurements. The methods and apparatus further comprise aspects that include storing the one or more one or more of downlink signal measurements and/or one or more uplink signal measurements associated with the subset of network entities at a database for managing transmit power at the subset of network entities. Moreover, the methods and apparatus comprise aspects that include adjusting a transmit power value of at least one of the subset of network entities from a first transmit power value to a second transmit power value based at least in part on the one or more of downlink signal measurements and/or one or more uplink signal measurements.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: September 20, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Yichao Huang, Chirag Sureshbhai Patel, Tamer Adel Kadous, Mehmet Yavuz, Lili Zhang, Rajat Prakash, Vinay Chande, Christophe Chevallier, Sumeeth Nagaraja, Farhad Meshkati, Suhas Mitra, Vansh Pal Singh Makh, Yeliz Tokgoz, Cong Shen, Varun Khaitan
  • Publication number: 20160270141
    Abstract: A method of wireless communication includes establishing, by a mobile device, an access connection to a first mobile network for network connectivity of the mobile device to the first mobile network. The mobile device includes a first transceiver of a first radio access technology (RAT) type and a second transceiver of a second RAT type, where establishing the access connection comprises performing a plurality of connection setup procedures. At least one of the connection setup procedures is communicated with the first transceiver over the first RAT type and at least another one of the connection setup procedures is communicated with the second transceiver over the second RAT type.
    Type: Application
    Filed: July 28, 2015
    Publication date: September 15, 2016
    Inventors: Manu SHARMA, Jangwon LEE, Rajat PRAKASH, Kalle Ilmari AHMAVAARA, Andrei Dragos RADULESCU
  • Patent number: 9408125
    Abstract: Multiple data bearers may be configured for a user equipment (UE) for carrier aggregation and may be split among multiple evolved nodeBs (eNBs). The eNBs may be selected to serve the multiple data bearers for the UE based on various criteria such as channel conditions, loading, and the like. Various eNBs may be selected to serve data bearers for UE on a per data bearer basis, so that a particular eNB may be selected to serve each data bearer of the UE. Each data packet for the UE may then be sent via an appropriate data bearer.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: August 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Gavin Bernard Horn, Jelena Damnjanovic, Rajat Prakash
  • Patent number: 9392511
    Abstract: A method for enhancing assignment of mobility classifications to mobile devices is described. A plurality of mobility classifications are stored in association with a plurality of mobile devices to indicate, for each mobile device, one or more handover parameters used by the mobile device. One or more handover parameters associated with the plurality of mobility classifications are updated based on mobility events. An error determination is made that one or more of the one or more mobile devices are incorrectly associated with the mobility classifications based on the one or more updated handover parameters for the plurality of mobility classifications. In response to the error determination, one or more new criteria are established that adjust how the mobility classifications are assigned.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: July 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Damanjit Singh, Rajat Prakash, Yeliz Tokgoz
  • Patent number: 9392608
    Abstract: Methods and apparatus for partitioning resources for enhanced inter-cell interference coordination (eICIC) are provided. Certain aspects involve broadcasting a message indicating time-domain resource partitioning information (RPI), where a user equipment (UE) may be operating in idle mode. With the RPI, the UE may be able to identify protected resources with reduced/eliminated interference from neighboring cells. The RPI in this broadcasted message may be encoded as a bitmap as an alternative or in addition to enumeration of the U/N/X subframes. Other aspects entail transmitting a dedicated or unicast message indicating the time-domain RPI, where a UE may be operating in connected mode. With the RPI, the UE may be able to determine channel state information (CSI), make radio resource management (RRM) measurements, or perform radio link monitoring (RLM), based on one or more signals from a serving base station during the protected time-domain resources.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: July 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Osok Song, Aleksandar Damnjanovic, Tingfang Ji, Taesang Yoo, Parag Arun Agashe, Madhavan Srinivasan Vajapeyam, Yongbin Wei, Tao Luo, Rajat Prakash, Masato Kitazoe
  • Publication number: 20160198372
    Abstract: A method for enhancing assignment of mobility classifications to mobile devices is described. A plurality of mobility classifications are stored in association with a plurality of mobile devices to indicate, for each mobile device, one or more handover parameters used by the mobile device. One or more handover parameters associated with the plurality of mobility classifications are updated based on mobility events. An error determination is made that one or more of the one or more mobile devices are incorrectly associated with the mobility classifications based on the one or more updated handover parameters for the plurality of mobility classifications. In response to the error determination, one or more new criteria are established that adjust how the mobility classifications are assigned.
    Type: Application
    Filed: January 6, 2015
    Publication date: July 7, 2016
    Inventors: Damanjit Singh, Rajat Prakash, Yeliz Tokgoz
  • Patent number: 9386441
    Abstract: Techniques for femtocell message delivery and network planning are described herein. A mobile device sends a registration request to an access point, such as a femtocell access point. If denied registration, the mobile device may return to service by a macro cell access point. A network entity, such as a femtocell gateway serving the access point, may determine an identification of the mobile device. The network entity may send the identification of mobile device and an identifier of the access point to an application server. The application server may create and send a targeted message to the mobile device based on the identification of mobile device and the identifier of the access point. The application server may determine a user count for the access point and facilitate network planning based on the user count.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: July 5, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Rajat Prakash, Christophe Chevallier