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    Compressed system information for link budget limited UEs in a radio access network
    42.
    发明授权
    Compressed system information for link budget limited UEs in a radio access network 有权

    公开(公告)号：US09872286B2

    公开(公告)日：2018-01-16

    申请号：US14865395

    申请日：2015-09-25

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Awais M. Hussain ,  Samy Khay-Ibbat ,  Sarma V. Vangala ,  Rafael L. Rivera-Barreto

    IPC: H04W72/04 ,  H04W48/20 ,  H04W48/12

    CPC classification number: H04W72/042 ,  H04W48/12 ,  H04W48/20

    Abstract: Techniques are disclosed relating to broadcasting and receiving system information in a radio access network (RAN). In one embodiment, a base station includes at least one antenna, at least one radio, configured to perform cellular communication using a radio access technology (RAT), and one or more processors coupled to the radio. In this embodiment, the base station is configured to broadcast first system information blocks (SIBs) encoded using a first coding rate and a first identifier. In this embodiment, the base station is also configured to broadcast second SIBs encoded using a second coding rate that is lower than the first coding rate and a second identifier. In this embodiment, the second SIBs include only a portion of the information included in the first SIBs and the second SIBs are usable by user equipment devices (UEs) having a limited link budget to determine access parameters for the base station.

    Optimizing operation of constrained user equipment
    46.
    发明授权
    Optimizing operation of constrained user equipment 有权

    公开(公告)号：US09775132B2

    公开(公告)日：2017-09-26

    申请号：US14996839

    申请日：2016-01-15

    Applicant: APPLE INC.

    Inventor： Samy Khay-Ibbat ,  Tarik Tabet

    IPC: H04W68/02 ,  H04W76/04 ,  H04W76/02

    CPC classification number: H04W68/02 ,  H04W76/18

    Abstract: A base station and associated method transmits a page to a user equipment (UE) for a call establishment procedure, determines whether an acknowledgement is received in response to the page and when no acknowledgement has been received, determines a number of pages that have been transmitted to the UE for the call establishment procedure, transmits a further page to the UE for the call establishment procedure when the number of pages is less than a page threshold and performs a page failure procedure when the number of pages exceeds the page threshold. In another method the base station transmits a radio resource control (RRC) connection release message to the UE, maintains a context for the UE when an acknowledgement for the RRC connection release message is not received, transmits a first page and transmits a second page when a further acknowledgement for the first page is not received.

    Mechanisms for LAA/LTE-U Detection to Mitigate Impact on Wi-Fi Performance
    48.
    发明申请
    Mechanisms for LAA/LTE-U Detection to Mitigate Impact on Wi-Fi Performance 审中-公开

    公开(公告)号：US20170251372A1

    公开(公告)日：2017-08-31

    申请号：US15430664

    申请日：2017-02-13

    Applicant: Apple Inc.

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

    IPC: H04W16/14 ,  H04W48/16 ,  H04W24/02 ,  H04W24/08

    Abstract: A wireless communication device may conduct first wireless communications over a first frequency band according to a first radio access technology (RAT), and may detect second wireless communications conducted over the first frequency band according to a second RAT while the wireless communication device is conducting the first wireless communications. The wireless communication device may then adjust characteristics and/or parameters associated with the first wireless communications based on the detected second wireless communications. In a specific example, a wireless communication device conducting Wi-Fi communications in the 5 GHz band may detect cellular communications (e.g. LAA/LTE-U communications) also conducted in the 5 GHz band while the wireless communication device is conducting the Wi Fi communications. The wireless communication device may then adjust characteristics and/or parameters associated with its Wi-Fi communications based on the detected signals/frequencies of the cellular (LAA/LTE-U) communications.

    TTI Bundling for Downlink Communication
    49.
    发明申请
    TTI Bundling for Downlink Communication 审中-公开

    公开(公告)号：US20170208589A1

    公开(公告)日：2017-07-20

    申请号：US15479997

    申请日：2017-04-05

    Applicant: Apple Inc.

    Inventor： Vinay Majjigi ,  Tarik Tabet ,  Dawei Zhang

    IPC: H04W72/04

    CPC classification number: H04W72/0446 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1893 ,  H04L1/1896 ,  H04L5/0005 ,  H04L5/0055 ,  H04W72/042 ,  H04W88/08

    Abstract: This disclosure relates to TTI bundling for downlink communication. According to one embodiment, a base station and a wireless device may establish a wireless communication link. The base station may determine to enable TTI bundling for downlink communication for at least one carrier of the wireless communication link. The base station may provide an indication to the wireless device to enable TTI bundling for downlink communication for the determined carrier(s) of the wireless communication link. The base station may subsequently transmit TTI bundle downlink communications to the wireless device via the determined carrier(s).

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