公开(公告)号：US20210318977A1

公开(公告)日：2021-10-14

申请号：US17357156

申请日：2021-06-24

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Paul V. Flynn ,  Tideya Kella ,  Vijay Kumar Ramamurthi

IPC: G06F13/40 ,  H04L29/08 ,  H04L12/40

Abstract: Circuits, methods, and apparatus that can allow chipsets in an electronic device to share information such that they can more efficiently utilize resources that are available in the electronic device. One example can provide a bus that is shared by three or more chipsets in an electronic device. This shared bus can be used by the chipsets in the electronic device to communicate and negotiate for the utilization of resources of the electronic device.

公开(公告)号：US11044635B2

公开(公告)日：2021-06-22

申请号：US16587200

申请日：2019-09-30

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Lydi Smaini ,  Tarik Tabet ,  Syed Aon Mujtaba

IPC: H04W28/08 ,  H04W72/12 ,  H04W16/14 ,  H04W72/04 ,  H04W72/14 ,  G01N27/90 ,  B08B3/02 ,  B08B3/04 ,  B08B3/08 ,  F16H57/01

Abstract: A wireless communication device (UE) may monitor grants received from respective cells associated with one or more first (e.g. licensed) frequency band(s) and one or more second (e.g. unlicensed) frequency band(s). Based on the received grants the UE may determine if an imbalance exists in the radio resource allocation, whereby the UE communicates more than intended in the second frequency band(s). The imbalance may be specified with respect to the ratio or portion of the communications that are conducted in the second frequency band(s) with respect to all wireless communications of the UE. If the UE detects an imbalance, it may transmit a report to the network (e.g. to the base station serving the UE) indicating unfavorable conditions for the UE to be operating in the second frequency band(s). In response, the network may disable the respective cell(s) associated with the second frequency band(s) and/or it may disable carrier aggregation for the UE.

公开(公告)号：US10728763B2

公开(公告)日：2020-07-28

申请号：US16419048

申请日：2019-05-22

Applicant: Apple Inc.

Inventor： Venkateswara Rao Manepalli ,  Srinivasan Nimmala ,  Farouk Belghoul

IPC: H04W76/00 ,  H04W12/08 ,  H04W36/00 ,  H04W36/08 ,  H04W48/16 ,  H04W12/06 ,  H04W76/18 ,  H04W76/30 ,  H04W76/10 ,  H04W12/00 ,  H04W48/02 ,  H04W36/38 ,  H04W88/06

Abstract: This disclosure relates to techniques for securely performing connection release and network redirection in a wireless communication system. A wireless device may establish a radio resource control (RRC) connection with a first cell. The wireless device may receive a RRC connection release message from the first cell. The RRC connection release message may include an indication to redirect the wireless device to a second cell. The RRC connection with the first cell may be released. It may be determined whether security has been established with the first cell when the indication to redirect the wireless device to the second cell is received. A new serving cell may be selected based at least in part on whether security has been established with the first cell when the indication to redirect the wireless device to the second cell is received.

公开(公告)号：US20200221313A1

公开(公告)日：2020-07-09

申请号：US16822123

申请日：2020-03-18

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Lydi Smaini ,  Tarik Tabet ,  Syed Aon Mujtaba

IPC: H04W16/14 ,  H04W74/08 ,  H04L27/26 ,  H04L27/00 ,  H04L5/00 ,  H04W72/04 ,  H04W74/00

Abstract: This disclosure relates to performing cellular communication in unlicensed spectrum in a manner that accounts for the possible existence of hidden nodes by opportunistically introducing the use of RTS and CTS messages. A listen-before-talk procedure may be performed to determine whether a wireless medium is available. When the listen-before-talk procedure is complete, an amount of time until a next possible start time for communicating in the cellular communication system according to a timing synchronization scheme for the cellular communication system may be determined. The wireless medium may be occupied until the next possible start time for communicating in the cellular communication system in a manner selected based at least in part on the amount of time until the next possible start time for communicating in the cellular communication system. Cellular communication may be performed on the wireless medium at the next possible start time for communicating in the cellular communication system.

公开(公告)号：US10652788B2

公开(公告)日：2020-05-12

申请号：US16037788

申请日：2018-07-17

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Samy Khay-Ibbat ,  Sarma V. Vangala ,  Rafael L. Rivera-Barreto ,  David Boettger ,  Awais M. Hussain ,  Syed Aon Mujtaba

IPC: H04W36/00 ,  H04B17/336 ,  H04B17/382

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.

公开(公告)号：US10581583B2

公开(公告)日：2020-03-03

申请号：US14503202

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Rafael L. Rivera-Barreto ,  Samy Khay-Ibbat ,  Sree Ram Kodali ,  Sarma V. Vangala ,  Syed A. Mujtaba ,  Swaminathan Balakrishnan

IPC: H04L5/14 ,  H04L5/00 ,  H04W36/00 ,  H04W76/10 ,  H04W48/18 ,  H04W88/06

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.

公开(公告)号：US10349280B2

公开(公告)日：2019-07-09

申请号：US16033282

申请日：2018-07-12

Applicant: Apple Inc.

Inventor： Venkateswara Rao Manepalli ,  Srinivasan Nimmala ,  Farouk Belghoul

IPC: H04W76/00 ,  H04W12/08 ,  H04W36/00 ,  H04W36/08 ,  H04W48/16 ,  H04W12/06 ,  H04W76/18 ,  H04W76/30 ,  H04W36/38

Abstract: This disclosure relates to techniques for securely performing connection release and network redirection in a wireless communication system. A wireless device may establish a radio resource control (RRC) connection with a first cell. The wireless device may receive a RRC connection release message from the first cell. The RRC connection release message may include an indication to redirect the wireless device to a second cell. The RRC connection with the first cell may be released. It may be determined whether security has been established with the first cell when the indication to redirect the wireless device to the second cell is received. A new serving cell may be selected based at least in part on whether security has been established with the first cell when the indication to redirect the wireless device to the second cell is received.

公开(公告)号：US20190124709A1

公开(公告)日：2019-04-25

申请号：US16227357

申请日：2018-12-20

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Rafael L. Rivera-Barreto

IPC: H04W76/16 ,  H04W72/08 ,  H04W24/10 ,  H04L5/00 ,  H04W76/36

Abstract: This disclosure relates to temporary suspension, and subsequent resumption, of radio resource aggregation in a wireless communication system. A wireless device may establish a communication link with a base station. The communication link with the base station may aggregate radio resources according to a first wireless communication technology and a second wireless communication technology. Use by the communication link of radio resources according to the second wireless communication technology may be suspended. Wireless communication activity according to the second wireless communication technology that is not associated with the communication link may be performed while use by the communication link of radio resources according to the second wireless communication technology is suspended. Use by the communication link of radio resources according to the second wireless communication technology may be resumed after performing the wireless communication activity according to the second wireless communication technology.

公开(公告)号：US20180139617A1

公开(公告)日：2018-05-17

申请号：US15812193

申请日：2017-11-14

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Christian W. Mucke ,  Rafael L. Rivera-Barreto

IPC: H04W16/14 ,  H04W74/08 ,  H04W24/10

CPC classification number: H04W16/14 ,  H04W24/10 ,  H04W74/0808 ,  H04W84/12

Abstract: This disclosure relates to performing uplink cellular communication in unlicensed frequency bands using Wi-Fi preamble information. A wireless device may receive downlink control information from a cellular base station. The downlink control information may indicate an uplink transmit opportunity for licensed assisted access communication for the wireless device. A length of the uplink transmit opportunity may be determined. Licensed assisted access uplink communication may be performed during the uplink transmit opportunity. A Wi-Fi physical layer preamble may be transmitted as part of the licensed assisted access uplink communication. A type of the Wi-Fi physical layer preamble may depend at least in part on the length of the uplink transmit opportunity.

公开(公告)号：US20180092109A1

公开(公告)日：2018-03-29

申请号：US15711061

申请日：2017-09-21

Applicant: Apple Inc.

Inventor： 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

IPC: H04W72/12 ,  H04W16/14 ,  H04W72/04 ,  H04W72/08 ,  H04B7/06

CPC classification number: H04W72/1215 ,  H04B7/0632 ,  H04W16/14 ,  H04W24/10 ,  H04W72/0446 ,  H04W72/085 ,  H04W74/06 ,  H04W74/0816 ,  H04W88/06

Abstract: A wireless communication device (UE) includes a cellular processor configured to conduct wireless communications according to a first radio access technology (RAT) in a first frequency band and in a second frequency band, wherein 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. In some embodiments, the apparatus includes a wireless local area network (WLAN) processor configured to conduct wireless communications according to a second RAT in the first frequency band. In some embodiments, the cellular processor and the WLAN processor are configured to couple to a common antenna for communications in the first frequency band. In some embodiments, the cellular processor may notify the WLAN processor when it is scanning and/or when it is assigned secondary component carriers in the first frequency band. In some embodiments, the WLAN processor may notify the cellular processor when it is transmitting. In some embodiments, the WLAN processor and/or the cellular processor may perform one or more actions in response to such notifications to improve coexistence in the first frequency band.