Patents by Inventor Andrei Dragos Radulescu

Andrei Dragos Radulescu 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: 9294978
    Abstract: Methods, apparatuses, and computer program products are disclosed for facilitating a beacon-assisted handover from a macro network to a femto cell during an active call. A femto cell management system assigns a unique identifier to a femto cell, which the femto cell utilizes to broadcast a beacon at a frequency different than the operating frequency of the femto cell. A wireless terminal receives a control message from the macro network directing the wireless terminal to scan particular frequencies. The wireless terminal subsequently provides a report to the macro network identifying attributes ascertained from the scan, which includes attributes associated with the beacon. The macro network then performs a handover from the macro network to the femto cell as a function of the attributes.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: March 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Mehmet Yavuz, Farhad Meshkati, Andrei Dragos Radulescu, Christophe Chevallier
  • Patent number: 9277468
    Abstract: Access terminals are provisioned to conduct intra-frequency, inter-frequency, and inter-RAT measurements and report physical layer identifiers of detected cells. The provisioning may involve cycling through all or a portion of a defined superset of physical layer identifier one subset at a time. In addition, the physical layer identifiers may be prioritized to improve the search procedure. Measurement report messages (including physical layer identifiers of the detected cells) are received at an access point as a result of the provisioning. A neighbor cell list for the femtocell is maintained based on the received measurement report messages and, optionally, other information.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: March 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Farhad Meshkati, Damanjit Singh, Vinay Chande, Andrei Dragos Radulescu, Mehmet Yavuz
  • Publication number: 20160057679
    Abstract: Methods and systems are disclosed for centralized self-organizing network (cSON)-aided small cell load balancing based on backhaul information. In an aspect, a cSON server receives periodic or event triggered backhaul capacity reports from each of the plurality of small cell base stations, a backhaul capacity report indicating an uplink and/or downlink capacity state of a backhaul connection over which a small cell base station of the plurality of small cell base stations is connected to a core network, determines load balancing assistance data for at least one of the plurality of small cell base stations based on the backhaul capacity reports received from each of the plurality of small cell base stations, and provides the load balancing assistance data to the at least one of the plurality of small cell base stations.
    Type: Application
    Filed: May 6, 2015
    Publication date: February 25, 2016
    Inventors: Marc Walter WERNER, Patrick STUPAR, Andrea GARAVAGLIA, Sumeeth NAGARAJA, Andrei Dragos RADULESCU
  • Patent number: 9264954
    Abstract: Neighbor relation information management involves, for example: acquiring, reporting, and exchanging neighbor relation information. In some cases, neighbor relation information is acquired and/or reported in a manner that does not significantly impact other functionality of the access terminal. For example, an access terminal may be configured to acquire and/or report neighbor relation information only during one or more defined radio states. In some cases, the acquisition of neighbor relation information is based on a neighbor relation threshold. In some cases, an access terminal does not immediately report measured neighbor relation information and instead stores the information for reporting at a later time. In some cases, a transmitted indication is used to facilitate retrieval of neighbor relation information from an access terminal. In some cases, neighbor relation information acquired from an access terminal is exchanged over a direct interface between access points.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: February 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Dino Flore, Osok Song
  • Patent number: 9232531
    Abstract: Techniques for prioritizing user equipments (UEs) for switching between wireless systems are disclosed. The wireless systems may be part of a small cell and may include a WLAN system and a cellular system. In one design, a network entity (e.g., the small cell) may identify a plurality of UEs communicating with a first wireless system. The first wireless system may be one of a plurality of wireless systems providing communication coverage for the UEs. The network entity may determine priorities of the UEs for switching from the first wireless system to a second wireless system. The network entity may then select at least one UE among the plurality of UEs to switch from the first wireless system to the second wireless system based on the priorities of the UEs.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: January 5, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Andrei Dragos Radulescu, Peerapol Tinnakornsrisuphap, Jay Kumar Sundararajan, Arnaud Meylan, Mehmet Yavuz
  • Patent number: 9226306
    Abstract: Techniques for switching user equipments (UEs) between wireless systems are disclosed. A UE may be located within the coverage of a plurality of wireless systems and may communicate with a first wireless system among the plurality of wireless systems. The plurality of wireless systems may include a WLAN system and a cellular system and/or may be part of a small cell. Metrics of the UE for the plurality of wireless systems may be determined. The metrics may be related to one or more of efficiency, service charge, service subscription, application type, or buffer size. Whether to switch the UE from the first wireless system to another wireless system may be determined based on the metrics. In one design, switching priorities of the UE for the plurality of wireless systems may be determined based on the metrics and may be used to determine whether to switch the UE.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 29, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Andrei Dragos Radulescu, Peerapol Tinnakornsrisuphap, Jay Kumar Sundararajan, Arnaud Meylan, Mehmet Yavuz
  • Patent number: 9210597
    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: March 13, 2013
    Date of Patent: December 8, 2015
    Assignee: QUALCOMM INCORPORATION
    Inventors: Andrei Dragos Radulescu, Rajat Prakash
  • Patent number: 9204441
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with classifying devices that communicate with a femto node for providing services thereto. In one example, a node is equipped to monitor and/or receive one or more parameters communicated by a device, assign a classification to the device related to a frequency of using the femto node based in part on the one or more parameters. In an aspect, the node is equipped to provide services to the device based on the classification. In another aspect, the node is equipped to provide the classification to one or more femto nodes, including the femto node, for providing services to the device.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 1, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Yeliz Tokgoz, Mehmet Yavuz, Damanjit Singh, Andrei Dragos Radulescu, Chirag Sureshbhai Patel
  • Patent number: 9198157
    Abstract: Local IP access paging schemes facilitate paging of an access terminal when packets destined for the access terminal are received via local IP access. In some implementations, a local entity acquires information that enables local paging of the access terminal by sniffing messages passing through the local entity. In some implementations, a local entity sends a packet or message to cause the core network to page an access terminal when a local IP access packet destined for the access terminal arrives at the local entity.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: November 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Lijun Zhao, Parag Arun Agashe, Peter H. Rauber, Andrei Dragos Radulescu, Damanjit Singh, Gavin Bernard Horn, Gerardo Giaretta
  • Publication number: 20150334743
    Abstract: Systems and methods are provided for physical cell identifier (PCI) and physical random access channel (PRACH) offset joint planning by a network entity that determines an energy level for each of a plurality of PRACH frequency offsets and selects a PRACH frequency offset from the plurality of PRACH frequency offsets, based at least in part on the determined energy levels. The network entity determines a plurality of possible physical cell identifiers (PCIs) for the selected PRACH frequency offset and selects a PCI from the plurality of possible PCIs.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 19, 2015
    Applicant: QUALCOMM INCORPORATED
    Inventors: Christophe Chevallier, Damanjit Singh, Cong Shen, Andrei Dragos Radulescu
  • Patent number: 9144003
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus preserves a state of a user equipment (UE) in an anchor evolved node B (eNB), wherein the anchor eNB is one of a set of connected cells, the UE being in a connected mode. Each cell of the connected set has a corresponding coverage area. The apparatus then maintains the state of the UE in the anchor eNB when the UE moves from a coverage area of the anchor eNB to a coverage area of another one of the cells from the set of connected cells.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 22, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Rajat Prakash, Peerapol Tinnakornsrisuphap, Damanjit Singh, Chirag Sureshbhai Patel
  • Patent number: 9137713
    Abstract: Methods and apparatuses are provided for causing active hand-in of a device from a macrocell base station to a femto node, which can be an inter-frequency hand-in. The femto node can broadcast a beacon over an operating frequency of the macrocell base station, and the macrocell base station, and/or one or more network components, can identify the femto node based on one or more parameters reported by the device from receiving the beacon. The beacon can be transmitted at varying powers to ensure active hand-in triggering, mitigate interference and/or can be powered on and off for such purposes. In addition, a macrocell base station can regulate compressed mode periods during which a device can measure the femto node based on receiving information regarding device proximity to the femto node, or a device can generate proximity indication messages base on measuring the beacon signals, etc.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: September 15, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Dragos Radulescu, Vinay Chande, Jen Mei Chen, Sanjiv Nanda, Damanjit Singh, Mehmet Yavuz
  • Publication number: 20150257061
    Abstract: Access terminals are provisioned to conduct intra-frequency, inter-frequency, and inter-RAT measurements and report physical layer identifiers of detected cells. The provisioning may involve cycling through all or a portion of a defined superset of physical layer identifier one subset at a time. In addition, the physical layer identifiers may be prioritized to improve the search procedure. Measurement report messages (including physical layer identifiers of the detected cells) are received at an access point as a result of the provisioning. A neighbor cell list for the femtocell is maintained based on the received measurement report messages and, optionally, other information.
    Type: Application
    Filed: May 19, 2015
    Publication date: September 10, 2015
    Inventors: Sumeeth NAGARAJA, Farhad MESHKATI, Damanjit SINGH, Vinay CHANDE, Andrei Dragos RADULESCU, Mehmet YAVUZ
  • Publication number: 20150257055
    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: Application
    Filed: March 5, 2014
    Publication date: September 10, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Rajat PRAKASH, Mehmet YAVUZ, Damanjit SINGH, Andrei Dragos RADULESCU
  • Patent number: 9113368
    Abstract: Access terminals are provisioned to conduct intra-frequency, inter-frequency, and inter-RAT measurements and report physical layer identifiers of detected cells. The provisioning may involve cycling through all or a portion of a defined superset of physical layer identifier one subset at a time. In addition, the physical layer identifiers may be prioritized to improve the search procedure. Measurement report messages (including physical layer identifiers of the detected cells) are received at an access point as a result of the provisioning. A neighbor cell list for the femtocell is maintained based on the received measurement report messages and, optionally, other information.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: August 18, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Farhad Meshkati, Damanjit Singh, Vinay Chande, Andrei Dragos Radulescu, Mehmet Yavuz
  • Patent number: 9084152
    Abstract: The present disclosure presents example methods and apparatuses for improved cell searching in a wireless communications environment. For example, the disclosure presents example methods of wireless communication in a multiflow environment, which may include establishing a first flow between a serving radio network controller (S-RNC) and a first network entity, wherein the S-RNC controls the first network entity. Such example methods may also include establishing a second flow between the S-RNC and a second network entity. Furthermore, such example methods may include transmitting data to a user equipment (UE) via both the first flow and the second flow.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM, Incorporated
    Inventors: Sharad Deepak Sambhwani, Andrei Dragos Radulescu, Rohit Kapoor, Francesco Pica, Ravi Agarwal
  • Publication number: 20150163680
    Abstract: Apparatus and methods of wireless communications are described for determining one or more bands (e.g., guard bands in wireless local area networks (WLANs)) in unused portions of an unlicensed spectrum, positioning one or more carriers for cellular communication (e.g., long term evolution (LTE) or LTE advanced communication) in the one or more bands, and performing the cellular communication over the unlicensed spectrum using the one or more carriers. In some non-limiting example aspects, the cellular communication may be in a standalone mode and the one or more carriers may include a primary component carrier (PCC) that is positioned in a Wi-Fi guard band. In these non-limiting example aspects, the apparatus and methods may further include allocating one or more secondary component carriers (SCCs) in Wi-Fi guard bands or in Wi-Fi channels, where the one or more SCCs are opportunistically tuned or turned ON/OFF based on cell loading or backhaul constraints.
    Type: Application
    Filed: February 27, 2014
    Publication date: June 11, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Nachiappan VALLIAPPAN, Tamer Adel KADOUS, Ahmed Kamel SADEK, Andrei Dragos RADULESCU
  • Publication number: 20150117208
    Abstract: The present disclosure presents a method and an apparatus for heavy active estimation mechanism for backhaul management at a small cell base station. For example, the method may include identifying, at the small cell base station, that a throughput of a user equipment (UE) in communication with the small cell base station is potentially limited due to backhaul congestion at the small cell base station, establishing a proxy flow between the small cell base station and a transmission control protocol (TCP) proxy peer in response to the identifying, wherein the proxy flow data packets are transmitted from the small cell base station to the TCP proxy peer or from the TCP proxy peer to the small cell base station, calculating a throughput of the proxy flow for a pre-determined time period, and determining whether the throughput of the UE is limited by backhaul congestion at the small cell base station based on the calculated throughput of the proxy flow.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Andrei Dragos RADULESCU, Farhad MESHKAT, Rajat PRAKASH, Rashmin Ranjilsinh ANJARIA, Sumeelh NAGARAJA, Tao CHEN, Vinod Viswanatha MENON, Sanjay Sridhar KAMATH
  • Publication number: 20150117197
    Abstract: The present disclosure presents a method and an apparatus for calibrating a small cell base station for backhaul management. For example, the method may include exchanging backhaul probing messages with a probing server by initiating a plurality of probing packets at the small cell base station, wherein the exchanging is performed over a backhaul after determining that a full queue condition associated with the backhaul is satisfied, computing calibration statistics for the backhaul based on characteristics associated with the backhaul probing messages, and adjusting one or more backhaul parameters of the small cell based on the calibration statistics. As such, calibration of a small cell base station for backhaul management may be achieved.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Andrei Dragos RADULESCU, Farhad MESHKATI, Rajat PRAKASH, Rashmin Ranjitsinh ANJARIA, Sumeeth NAGARAJA, Tao CHEN, Vinod Viswanatha MENON, Sanjay Sridhar KAMATH
  • Publication number: 20150117207
    Abstract: The present disclosure presents a method and an apparatus for a light active estimation mechanism for backhaul management at a small cell base station. 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: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Andrei Dragos RADULESCU, Farhad MESHKATI, Rajat PRAKASH, Rashmin Ranjitsinh ANJARIA, Sumeeth NAGARAJA, Tao CHEN, Vinod Viswanatha MENON, Sanjay Sridhar KAMATH, Daehak KIM