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: 9769706
    Abstract: Resources are reserved for handover signaling. Handover reliability is thereby improved since the primary interference for handover signaling will be from the handover signaling of nearby cells (e.g., as opposed to data traffic). Given the relatively sparse nature of handover signaling, a significant reduction in interference may be achieved in a network employing this technique in comparison to conventional networks. In some implementations, a set of neighboring access points cooperate to determine which resources are reserved for handover signaling. In some implementations, resources for handover signaling are reserved on a network-wide basis or an access point cluster-wide basis.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: September 19, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajat Prakash, Chirag Sureshbhai Patel
  • Patent number: 9756534
    Abstract: Techniques for prioritizing inter-frequency measurements are disclosed. The method may include identifying a first frequency for measurement that is associated with mobility of an access terminal for transitioning from a serving primary cell to a target primary cell, identifying a second frequency for measurement that is associated with supplemental capacity of the access terminal for adding a secondary cell to operate in conjunction with the serving primary cell, prioritizing the mobility of the access terminal or the supplemental capacity of the access terminal, selecting for measurement in a measurement period either the first frequency or the second frequency based on the prioritizing, and triggering a measurement for the selected frequency.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: September 5, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Farhad Meshkati, Ahmed Kamel Sadek, Rajat Prakash
  • Publication number: 20170237817
    Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may include a service discovery indicator in a broadcast message. A user equipment (UE) may tune to the radio frequency spectrum band of the AP and receive the broadcast message. The UE may identify a web resource based on the service discovery indicator and access the web resource to determine the capability configuration of the AP. The UE may access the web resource using an existing internet connection of its currently serving AP.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 17, 2017
    Inventors: Manu Sharma, Rajat Prakash, Miguel Griot, Soumya Das
  • Patent number: 9717091
    Abstract: Fractional frequency reuse (FFR) is defined based on a mobility condition of an access terminal. For example, upon determining that an access terminal is moving (or at a cell edge, or experiencing poor link conditions, etc., due to mobility), FFR may be defined for the serving access point of the access terminal and/or for neighbor access points to maintain acceptable link quality for the access terminal. In particular, FFR may be defined in a manner that frees-up or otherwise reserves resources for the access terminal. For example, the serving access point may allocate additional sub-bands for the access terminal and/or increase the power levels used on the sub-bands allocated for the access terminal. In addition, neighbor access points may back-off these sub-bands.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: July 25, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ahmed Kamel Sadek, Rajat Prakash
  • Publication number: 20170208454
    Abstract: Aspects of the present disclosure relate to methods and apparatus for spectrum access server support of resource assignments based on radio access network coexistence information. An example method generally includes obtaining information regarding capability of different entities requesting use of the shared radio resources, estimating compatibility between the different entities based on the information, and allocating the shared radio resources to the different entities based on the estimated compatibility.
    Type: Application
    Filed: December 7, 2016
    Publication date: July 20, 2017
    Inventors: Douglas KNISELY, Farhad MESHKATI, Mehmet YAVUZ, Rajat PRAKASH
  • Patent number: 9713041
    Abstract: Access control for an access point (e.g., a cell of the access point) may be based on an access mode associated with the access point. For example, depending on the access mode, access control may involve performing a membership check for the access point. Such a membership check may be performed at a network entity, a source access point, or some other suitable location in a network. In some aspects, access control may involve performing a membership check for an access point in conjunction with a context fetch procedure. Such a procedure may be performed, for example, when an access terminal arrives at the access point after experiencing RLF at another access point.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: July 18, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Gavin Bernard Horn, Parag Arun Agashe, Rajarshi Gupta, Rajat Prakash
  • Patent number: 9706553
    Abstract: Methods and apparatuses are described for providing a shared eNodeB that is configured to provide shared network access to UEs associated with disparate cellular service providers, or operators, over one or more unlicensed frequency bands in a multi-operator, heterogeneous, and dual-connectivity-compatible system. In an example methodology, a shared eNodeB may establish a secondary communication link with a first user equipment associated with a first operators primary cell, then may establish another secondary communication link with a second UE associated with a second operators primary cell, wherein the shared eNodeB is configured to communicate with both a first core network associated with the first operator and a second core network associated with the second operator, and may communicate wirelessly over one or more unlicensed frequency bands with both the first UE via the first communication link and the second UE via the second communication link.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: July 11, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Edward Knapp, Rajat Prakash
  • Patent number: 9686714
    Abstract: Detecting local cell identifier collision by a base station may be achieved by receiving, at a first base station from a user device, a dedicated identifier associated with a second base station. The dedicated identifier may include or otherwise map to a user device identifier associated with the second base station and a local cell identifier associated with the second base station. Based on the dedicated identifier, it may be determined, at the first base station, that there is a local cell identifier collision between the first base station and the second base station.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: June 20, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Rajat Prakash
  • Patent number: 9668198
    Abstract: The subject technology provides for initiating a communication interface in a wireless communication system. In an embodiment, a neighbor node is discovered at an access point. The subject technology receives, via a network message in response to discovering the neighbor node, an address indication associated with the neighbor node for configuration of the communication interface. It is then determined whether to initiate one of a direct communication interface or indirect communication interface for communication with the neighbor node based on the address indication in the received network message.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: May 30, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Gavin Bernard Horn, Rajat Prakash
  • Patent number: 9648493
    Abstract: Confusion resulting from assigning the same node identifier to multiple nodes is resolved through the use of confusion detection techniques and the use of unique identifiers for the nodes. In some aspects an access point and/or an access terminal may perform operations relating to detecting confusion and/or providing a unique identifier to resolve confusion.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: May 9, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Gavin B. Horn, Parag A. Agashe, Rajat Prakash, Rajarshi Gupta, Masato Kitazoe, Nathan E. Tenny, Oronzo Flore
  • Patent number: 9642033
    Abstract: Local breakout is provided by one or more nodes (e.g., a local access point and/or a local gateway) in a wireless network to facilitate access to one or more local services. In conjunction with local breakout, multiple IP points of presence relating to different levels of service may be provided for an access point. For example, one point of presence may relate to a local service while another point of presence may relate to a core network service.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: May 2, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajarshi Gupta, Fatih Ulupinar, Parag A. Agashe, Peerapol Tinnakornsrisuphap, Rajat Prakash, Gavin Bernard Horn, Gerardo Giaretta, Kalle Ahmavaara, Osok Song
  • Patent number: 9609688
    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for startup and recovery of a radio link between a relay node and a donor base station. According to certain aspects, a relay node may perform a random access procedure utilizing a random access channel (RACH) to transition between Uu interface operations and Un interface operations. According to certain aspects, the relay node may perform radio link failure (RLF) recovery utilizing RACH procedures for a Un interface. The procedures described herein, according to certain aspects, may utilize a dedicated relay RACH resource and a Relay Physical Downlink Control Channel (R-PDCCH).
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: March 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajat Prakash, Fatih Ulupinar, Ravi Palanki, Nathan E. Tenny
  • Publication number: 20170086108
    Abstract: Techniques for prioritizing inter-frequency measurements are disclosed. The method may include identifying a first frequency for measurement that is associated with mobility of an access terminal for transitioning from a serving primary cell to a target primary cell, identifying a second frequency for measurement that is associated with supplemental capacity of the access terminal for adding a secondary cell to operate in conjunction with the serving primary cell, prioritizing the mobility of the access terminal or the supplemental capacity of the access terminal, selecting for measurement in a measurement period either the first frequency or the second frequency based on the prioritizing, and triggering a measurement for the selected frequency.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 23, 2017
    Inventors: Farhad MESHKATI, Ahmed Kamel SADEK, Rajat PRAKASH
  • Patent number: 9603062
    Abstract: Systems and methodologies are described that facilitate grouping pilot identifies to indicate type and/or classification information regarding one or more access points. The access points can select or be assigned pilot identifiers from the group indicating a type or classification related to the access points. Thus, identifiers can be grouped into macrocell and/or femtocell groups or ranges such that an access point can indicate, and mobile devices can efficiently determine, whether the access point provides macrocell or femtocell coverage based on a range from which its pilot identifier is selected or assigned. In addition, the pilot identifiers can be utilized to indicate restricted association information regarding the access points.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: March 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Gavin B. Horn, Fatih Ulupinar, Parag A. Agashe, Rajat Prakash, Aamod Khandekar, Alexei Gorokhov, Naga Bhushan
  • Patent number: 9584290
    Abstract: Systems, methods and apparatuses are provided that facilitate selecting resources, such as time slots, subframes, etc., for performing bandwidth switching related to activating and/or deactivating one or more carriers. A data portion of one or more subframes can be selected for performing bandwidth switching. In addition, a device can determine whether one or more downlink grants are received in the one or more subframes, and can avoid selecting such subframes. The device can alternatively perform the bandwidth switching and request retransmission of the data portion. Additionally or alternatively, the device can determine a type of the one or more subframes and/or signals transmitted in the one or more subframes to determine whether to perform bandwidth switching in the subframes. The bandwidth switching can include changing a sampling rate, reconfiguring frequency filters, modifying a local oscillator, etc.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajat Prakash, Jelena M. Damnjanovic, Peter Gaal, Parag Arun Agashe, Valentin Alexandru Gheorghiu, Masato Kitazoe, Ravi Palanki
  • Patent number: 9585069
    Abstract: Confusion resulting from assigning the same node identifier to multiple nodes is resolved through the use of confusion detection techniques and the use of unique identifiers for the nodes. In some aspects a network may provide a time gap (e.g., an asynchronous time gap) during which an access terminal may temporarily cease monitoring transmissions from a source node so that the access terminal may acquire a unique identifier from a target node. In some aspects an access terminal may commence handover operations at a target node after determining whether the access terminal is allowed to access the target node. In some aspects a source node may prepare several target nodes for potential handover in the event confusion is detected or likely. Here, the source node may send information relating to the preparation of the potential target nodes to the access terminal whereby the access terminal uses the handover preparation information to initiate a handover at that target node.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: February 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Rajat Prakash, Rajarshi Gupta, Parag A. Agashe, Masato Kitazoe, Arnaud Meylan, Gavin B. Horn
  • Patent number: 9578649
    Abstract: To improve performance in devices capable of communication using multiple radio access technologies (RATs), a gap pattern may be constructed in which a first RAT is quieted during certain times to allow for a second RAT to operate without interference. Gap patterns may be constructed based on timeline constraints, such as grant scheduling and HARQ performance, or based on desired performance levels of one or more of the RATs. Gap patterns may be selected by a user equipment or base station. Gap patterns may be selected to protect information in certain subframes. Potential gap patterns may be assigned weights indicating their desirability.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: February 21, 2017
    Assignee: QUALCOMM INCORPORATED
    Inventors: Pranav Dayal, Tamer Adel Kadous, Rajat Prakash, Ashok Mantravadi, Ahmed K. Sadek
  • 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