Patents by Inventor Rafael L. RIVERA-BARRETO

Rafael L. RIVERA-BARRETO 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: 10924921
    Abstract: Embodiments described herein relate to transfer of credentials between two mobile wireless devices that are within proximity of each other, via a secure local connection, or via a network-based cloud service, where the two mobile wireless devices are not in proximity to each other. Transfer of credentials can include communication between a source device, a target device, and/or one more network-based servers, which can include mobile network operator (MNO) managed servers, such as an entitlement server, a web-sheet server, an authentication server, a provisioning server, a subscription management data preparation (SM-DP+) server, a home subscriber server (HSS), and/or an authentication server, as well as third-party managed servers, such as a cloud service server and/or an identification services server. Authentication can be based at least in part on one or more tokens and/or a trust flag obtained by the source device and provided to the target device.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Sherman X. Jin, Raj S. Chaugule, Anish Kumar Goyal, Li Li, Rafael L. Rivera-Barreto, Samy Touati, Rohan C. Malthankar
  • Patent number: 10917935
    Abstract: Apparatus and methods to support emergency services sessions by network elements and by a wireless device are disclosed. The wireless device, when roaming to a visited country/region, queries a network-based server to obtain information for Public Land Mobile Networks (PLMNs) that support emergency services sessions via non-cellular wireless access in the visited country/region. The network-based server responds with a list of PLMNs from which the wireless device selects a PLMN. The wireless device further queries the network-based server to obtain information for evolved Packet Data Gateways (ePDGs) for a selected PLMN and receives from the network-based server a list of Internet Protocol (IP) addresses for ePDGs that support emergency services sessions via non-cellular wireless access for the selected PLMN.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: February 9, 2021
    Assignee: Apple Inc.
    Inventors: Krisztian Kiss, Rohan C. Malthankar, Rafael L. Rivera-Barreto, Vikram Bhaskara Yerrabommanahalli
  • Publication number: 20210037604
    Abstract: This disclosure relates to techniques for performing Wi-Fi authentication in a wireless communication system. Public key cryptography may be used to enhance the confidentiality of the user's permanent identity in transit. In some embodiments, a RSA-OAEP(SHA-256) encryption scheme may be used to protect the permanent identity when the EAP client needs to send the user's permanent identity to the server in the absence of pseudonym or fast re-authentication identity. In some embodiments, a server certificate is used to authenticate a iWLAN tunnel to protect an IMSI during setup of a Wi-Fi call. Using the methods described herein on both or either of the EAP client and server side may offer improved privacy protection.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 4, 2021
    Inventors: Rohan C. Malthankar, Paresh B. Sawant, Delziel J. Fernandes, Sergey Sitnikov, Arun G. Mathias, Jason A. Novak, Krisztian Kiss, Rafael L. Rivera-Barreto, Chandiramohan Vasudevan, Vladimir M. Appel
  • Publication number: 20200374662
    Abstract: A network controller, a user equipment (UE) device, and associated methods for conducting intelligent enhanced multimedia broadcast multicast services (eMBMS). A network controller receives user preference information and location information from a plurality of UEs. The network controller selects one or more data packages to transmit using eMBMS in one or more broadcast regions based on the user preference information and the location information. The one or more data packages may comprise an updated machine learning model in a distributed learning application. The network controller provides an indication to a remote device to broadcast the one or more data packages in the respective one or more broadcast regions using eMBMS.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 26, 2020
    Inventors: Farouk Belghoul, Christian W. Mucke, Rafael L. Rivera-Barreto, Ayman F. Naguib, Rohan C. Malthankar, Ben-Heng Juang, Kushal M. Chawda, Sumit Saxena
  • Publication number: 20200374769
    Abstract: This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Tarik Tabet, Farouk Belghoul, Samy Khay-Ibbat, Sarma V. Vangala, Rafael L. Rivera-Barreto, David Boettger, Awais M. Hussain, Syed Aon Mujtaba
  • Patent number: 10833876
    Abstract: This disclosure relates to techniques for performing Wi-Fi authentication in a wireless communication system. Public key cryptography may be used to enhance the confidentiality of the user's permanent identity in transit. In some embodiments, a RSA-OAEP (SHA-256) encryption scheme may be used to protect the permanent identity when the EAP client needs to send the user's permanent identity to the server in the absence of pseudonym or fast re-authentication identity. In some embodiments, a server certificate is used to authenticate a iWLAN tunnel to protect an IMSI during setup of a Wi-Fi call. Using the methods described herein on both or either of the EAP client and server side may offer improved privacy protection.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: November 10, 2020
    Assignee: Apple Inc.
    Inventors: Rohan C Malthankar, Paresh B. Sawant, Delziel J. Fernandes, Sergey Sitnikov, Arun G. Mathias, Jason A. Novak, Krisztian Kiss, Rafael L. Rivera-Barreto, Chandiramohan Vasudevan, Vladimir M. Appel
  • Publication number: 20200323025
    Abstract: This disclosure relates to transmitting an emergency message to a user equipment device (UE) over a wireless local area network (WLAN). The UE may establish a connection with an access point through WLAN. The UE may transmit, via the access point and to a network entity, an indication that the UE supports receiving emergency messaging through the WLAN. At least in part in response to communicating the indication, the UE may receive, from the network entity and via the access point, an emergency message and location information. The UE may compare the location information with a location of the UE to determine whether the UE is located within a first region specified by the location information. Based on a determination that the location of the UE is within the first region, the UE may display the emergency message on a display of the UE.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Farouk Belghoul, Krisztian Kiss, Rafael L. Rivera-Barreto, Rohan C. Malthankar, Sherman X. Jin
  • Patent number: 10772015
    Abstract: This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: September 8, 2020
    Assignee: Apple Inc.
    Inventors: Tarik Tabet, Farouk Belghoul, Samy Khay-Ibbat, Sarma V. Vangala, Rafael L. Rivera-Barreto, David Boettger, Awais M. Hussain, Syed Aon Mujtaba
  • Patent number: 10743147
    Abstract: A network controller, a user equipment (UE) device, and associated methods for conducting intelligent enhanced multimedia broadcast multicast services (eMBMS). A network controller receives user preference information and location information from a plurality of UEs. The network controller selects one or more data packages to transmit using eMBMS in one or more broadcast regions based on the user preference information and the location information. The one or more data packages may comprise an updated machine learning model in a distributed learning application. The network controller provides an indication to a remote device to broadcast the one or more data packages in the respective one or more broadcast regions using eMBMS.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 11, 2020
    Assignee: Apple Inc.
    Inventors: Farouk Belghoul, Christian W. Mucke, Rafael L. Rivera-Barreto, Ayman F. Naguib, Rohan C. Malthankar, Ben-Heng Juang, Kushal M. Chawda, Sumit Saxena
  • Patent number: 10721792
    Abstract: This disclosure relates to transmitting an emergency message to a user equipment device (UE) over a wireless local area network (WLAN). The UE may establish a connection with an access point through WLAN. The UE may transmit, via the access point and to a network entity, an indication that the UE supports receiving emergency messaging through the WLAN. At least in part in response to communicating the indication, the UE may receive, from the network entity and via the access point, an emergency message and location information. The UE may compare the location information with a location of the UE to determine whether the UE is located within a first region specified by the location information. Based on a determination that the location of the UE is within the first region, the UE may display the emergency message on a display of the UE.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: July 21, 2020
    Assignee: Apple Inc.
    Inventors: Farouk Belghoul, Krisztian Kiss, Rafael L. Rivera-Barreto, Rohan C. Malthankar, Sherman X. Jin
  • Patent number: 10660110
    Abstract: A user equipment (UE) device may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and additional optimization requirements. The new device category may identify the UE device as a wearable device. According to some embodiments, LTE category M may be extended to support non-MTC operations performed by wearable devices. For example, the new device category may support UE mobility and may disallow access barring. Additional extensions may be implemented in response to an indication by the UE that the UE is implementing a specific application, such as VoLTE or a near real-time application, such as audio streaming. In some scenarios, the indication may include the UE indicating a specific QCI value. In some scenarios, the indication may include the UE attaching to a specific APN.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: May 19, 2020
    Assignee: Apple Inc.
    Inventors: Tarik Tabet, Samy Khay-Ibbat, Krisztian Kiss, Rafael L. Rivera-Barreto, Cesar Perez, Moustafa M. Elsayed, Prashant H. Vashi
  • Patent number: 10652788
    Abstract: This disclosure relates to techniques for a link budget limited UE to improve communications performance with a cellular network. The UE may perform signal to interference noise ratio (SINR) measurements and use these measurements to adjust a received signal power value that is provided to the cellular network as a received signal power measurement. The UE may generate the received signal power value based at least in part on the SINR measurement in order to reduce the likelihood of handover when the UE has good SINR but poor received signal power. The UE may also provide preferred configuration information to the base station which enhances the performance of the UE when link budget limited. The configuration information may specify one or more parameter values designed to provide improved performance for a link budget limited device.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 12, 2020
    Assignee: Apple Inc.
    Inventors: Tarik Tabet, Farouk Belghoul, Samy Khay-Ibbat, Sarma V. Vangala, Rafael L. Rivera-Barreto, David Boettger, Awais M. Hussain, Syed Aon Mujtaba
  • Publication number: 20200137566
    Abstract: Embodiments described herein relate to transfer of credentials between two mobile wireless devices that are within proximity of each other, via a secure local connection, or via a network-based cloud service, where the two mobile wireless devices are not in proximity to each other. Transfer of credentials can include communication between a source device, a target device, and/or one more network-based servers, which can include mobile network operator (MNO) managed servers, such as an entitlement server, a web-sheet server, an authentication server, a provisioning server, a subscription management data preparation (SM-DP+) server, a home subscriber server (HSS), and/or an authentication server, as well as third-party managed servers, such as a cloud service server and/or an identification services server. Authentication can be based at least in part on one or more tokens and/or a trust flag obtained by the source device and provided to the target device.
    Type: Application
    Filed: October 29, 2019
    Publication date: April 30, 2020
    Inventors: Sherman X. JIN, Raj S. CHAUGULE, Anish Kumar GOYAL, Li LI, Rafael L. RIVERA-BARRETO, Samy TOUATI, Rohan C. MALTHANKAR
  • Publication number: 20200137557
    Abstract: Some embodiments relate to methods and systems for initiating and transferring cellular subscription service using associated cellular communication devices. Cellular service may be initiated for a first cellular communication device via a second cellular communication device. The first cellular communication device may be provisioned to operate in an independent mode. In other scenarios, cellular service may be transferred from the first cellular communication device operating in independent mode to a third cellular communication device, which may be provisioned to operate in independent mode.
    Type: Application
    Filed: June 4, 2019
    Publication date: April 30, 2020
    Inventors: Samy Touati, Chenzhi Yu, Li Li, Rafael L. Rivera-Barreto, Rohan C. Malthankar
  • Publication number: 20200120601
    Abstract: Distributing indications of emergency messages via Wi-Fi. A cellular device may temporarily disable its cellular modem. The cellular device may receive an indication over Wi-Fi that an emergency message has been broadcast. In response, the cellular device may activate its cellular modem and retrieve the emergency message via a cellular network.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 16, 2020
    Inventors: Farouk Belghoul, Rafael L. Rivera-Barreto, Krisztian Kiss, Rohan C. Malthankar, Tarik Tabet, Cesar Perez
  • Publication number: 20200084723
    Abstract: This disclosure relates to dynamic baseband management for a wireless device. The wireless device may be an accessory device. The accessory device may determine whether it has a short-range wireless communication link with a companion device. The accessory device may determine one or more proximity metrics relating to the companion device. The accessory device may further determine one or more metrics associated with user settings, user activity and/or application activity at the wireless device. The wireless device may select a (e.g., full, limited, or off) baseband operating mode based on any or all of these considerations.
    Type: Application
    Filed: November 13, 2019
    Publication date: March 12, 2020
    Inventors: Ajoy K. Singh, Jared S. Grubb, Madhusudan Chaudhary, Saran Krishnaswamy, Jesus A. Gutierrez Gomez, Sirisha Pillalamarri, Samuel J. Miller, Rohan C. Malthankar, Sergey Sitnikov, Ziv Wolkowicki, Dimitrios Prodanos, Andreas E. Schobel, Christopher P. Saari, Keith W. Rauenbuehler, Rafael L. Rivera-Barreto, Najeeb M. Abdulrahiman
  • Patent number: 10581583
    Abstract: This application discloses various techniques for call establishment using voice-over LTE (VoLTE) in networks supporting time division (TD) and frequency division duplexed (FDD) LTE communication systems. Such techniques can include systems and methods for mobile-originated calls for a UE in a TD-LTE cell, systems and methods for mobile-terminated calls for a connected UE in a TD-LTE cell and systems and methods for mobile-terminated calls for an idle UE in a TD-LTE cell. These methods and systems can leverage component carriers from a carrier aggregating capable UE to facilitate more efficient and/or effective UE call establishment.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: March 3, 2020
    Assignee: Apple Inc.
    Inventors: Tarik Tabet, Farouk Belghoul, Rafael L. Rivera-Barreto, Samy Khay-Ibbat, Sree Ram Kodali, Sarma V. Vangala, Syed A. Mujtaba, Swaminathan Balakrishnan
  • Patent number: 10575315
    Abstract: A system, devices and methods for providing input from a user equipment (UE) for the selection of a carrier channel combination for use in carrier aggregation. The exemplary system includes a UE configured to perform carrier aggregation, the UE storing a radio frequency (RF) calibration table including a plurality of transmission related requirements specific to the UE, the UE configured to generate priority data for each carrier channel combination supported for use in carrier aggregation based upon the RF calibration table and a network component receiving the priority data and an indication from the UE, the network component configured to select a carrier channel combination for use in carrier aggregation based upon the priority data, the network component transmitting carrier aggregation configuration data including the selected carrier channel combination to the UE.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 25, 2020
    Assignee: Apple Inc.
    Inventors: Sarma V. Vangala, Swaminathan Balakrishnan, Tarik Tabet, Samy Khay-Ibbat, Rafael L. Rivera-Barreto, Dawei Zhang, Sree Ram Kodali
  • Publication number: 20200059941
    Abstract: An apparatus such as a wireless communication device (UE) may include first circuitry configured to conduct wireless communications according to a first radio access technology (RAT) in a first frequency band and in a second frequency band, where the first RAT is a cellular RAT, the first frequency band is in an unlicensed spectrum, and the second frequency band is in a licensed spectrum. The apparatus may include second circuitry configured to conduct wireless communications according to a second RAT in the first frequency band, wherein the second RAT is a wireless local area network (WLAN) RAT. The apparatus may be configured to determine to perform a scan operation in the first frequency band using the first circuitry and, based on one or more transmissions by the second circuitry using the first frequency band, adjust one or more parameters for the scan measurement by the first circuitry. The cellular communications in the first frequency band may be LAA communications, for example.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 20, 2020
    Inventors: Farouk Belghoul, Paul V. Flynn, Louie J. Sanguinetti, Bernd W. Adler, Christian W. Mucke, Joseph Hakim, Ronald W. Dimpflmaier, Matthias Sauer, Tushar R. Shah, Daniel R. Borges, Rafael L. Rivera-Barreto, Cesar Perez
  • Publication number: 20200053135
    Abstract: Techniques are disclosed relating to informing a network that a UE desires packet-switched voice communication. In some embodiments, the information transmitted to the network distinguishes between voice communications and other communications (e.g., other IMS communications) and is transmitted prior to establishment of a dedicated bearer for IP multimedia subsystem (IMS) signaling for the apparatus.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 13, 2020
    Inventors: Huarui Liang, Tarik Tabet, Dawei Zhang, Farouk Belghoul, Samy Khay-Ibbat, Rafael L. Rivera-Barreto