公开(公告)号：US10531307B2

公开(公告)日：2020-01-07

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 ,  H04W84/12

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.

公开(公告)号：US10462192B2

公开(公告)日：2019-10-29

申请号：US14817590

申请日：2015-08-04

Applicant: Apple Inc.

Inventor： Huarui Liang ,  Tarik Tabet ,  Dawei Zhang ,  Farouk Belghoul ,  Samy Khay-Ibbat ,  Rafael L. Rivera-Barreto

IPC: H04L29/06 ,  H04L12/14 ,  H04W28/24 ,  H04W76/12 ,  H04W4/24 ,  H04M15/00

Abstract: Techniques are disclosed relating to informing a network that a UE desires packet-switched voice communication. In one embodiment, a method includes receiving first information from a UE device requesting voice communication over a packet-switched network. In this embodiment, the method further includes transmitting, in response to the first information, second information to a base station serving the UE device, wherein the second information indicates that the UE device is requesting voice communication over the packet-switched network. In this embodiment, the transmitting is performed prior to establishment of a dedicated bearer by the base station for the UE device. In this embodiment, the second information operates to configure communications between the base station and the UE device to provide a particular quality of service for the packet-switched voice communication using the dedicated bearer.

公开(公告)号：US10432366B2

公开(公告)日：2019-10-01

申请号：US15584251

申请日：2017-05-02

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Awais M. Hussain ,  Rafael L. Rivera-Barreto ,  Matthias Sauer ,  Christian W. Mucke ,  David Boettger ,  Moustafa M. Elsayed

IPC: H04L5/00 ,  H04W72/04 ,  H04W88/08

Abstract: In some embodiments, a wireless device such as a user equipment (UE) may communicate with a base station using an advanced form of carrier aggregation. The UE may provide signaling to the network specifying a number P of downlink component carriers to be configured for use by the UE for downlink carrier aggregation and a number Q of uplink component carriers to be configured for use by the UE for uplink carrier aggregation. The UE can only utilize a lesser number M of downlink component carriers at any given time in downlink carrier aggregation and can only utilize a lesser number N of uplink component carriers at any given time in uplink carrier aggregation. Thus the UE may request the network to configure a greater number P and Q of downlink and uplink component carriers, respectively, than the UE can actually use at any instant of time.

公开(公告)号：US10292196B2

公开(公告)日：2019-05-14

申请号：US14496358

申请日：2014-09-25

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Vinay Majjigi ,  Dawei Zhang

IPC: H04W76/15 ,  H04W28/08 ,  H04L1/18

Abstract: This disclosure relates to carrier aggregation using separate RLC entities for different component carriers. According to one embodiment, a base station and a wireless device may establish a primary component carrier and at least one secondary component carrier according to a first radio access technology. Separate radio link control entities may be established for the primary component carrier and the secondary component carrier. Data communicated between the base station and the wireless device may be routed by way of the primary component or the secondary component carrier based on differing characteristics of the component carriers, and the RLC entities may treat downlink data differently on the primary component carrier and the secondary component carrier based on the differing characteristics of the component carriers.

公开(公告)号：US20190132830A1

公开(公告)日：2019-05-02

申请号：US15571577

申请日：2016-11-05

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Haijing Hu ,  Dawei Zhang ,  Yuchul Kim

IPC: H04W72/04 ,  H04W72/08 ,  H04W72/12

Abstract: This disclosure relates to techniques for supporting asymmetric uplink and downlink bandwidth allocations for a wireless device, and for dynamically modifying the bandwidth allocations for a wireless device, in a wireless communication system. A cellular communication link may be established between a base station and a wireless device. The base station may determine an uplink bandwidth allocation and a downlink bandwidth allocation for the wireless device. The uplink bandwidth allocation and the downlink bandwidth allocation may be selected based on different criteria and may include different amounts of bandwidth. Indications of the uplink bandwidth allocation and the downlink bandwidth allocation may be provided to the wireless device. The base station and wireless device may communicate according to the uplink bandwidth allocation and the downlink bandwidth allocation.

公开(公告)号：US10271283B2

公开(公告)日：2019-04-23

申请号：US15151990

申请日：2016-05-11

Applicant: APPLE INC.

Inventor： Syed Aon Mujtaba ,  Santhanakrishnan Geeyarpuramnadathur ,  Matthias Sauer ,  Tarik Tabet

IPC: H04W52/02

Abstract: An apparatus, system and method for determining whether a battery alarm of a UE is asserted, reducing a transmission duty cycle of the UE to zero for a first predetermined time period when the battery alarm is asserted, determining whether the battery alarm has been de-asserted after the first predetermined time period and when the battery alarm has not been de-asserted, increasing the transmission duty cycle to a first threshold level for a second predetermined time period, wherein the first threshold level is less than a full transmission duty cycle of the UE. When the battery alarm has been de-asserted, increasing the transmission duty cycle to a second threshold level for a third predetermined time period, wherein the second threshold level is less than the full transmission duty cycle of the UE, and wherein the second threshold level is greater than the first threshold level.

公开(公告)号：US20190110322A1

公开(公告)日：2019-04-11

申请号：US16214474

申请日：2018-12-10

Applicant: Apple Inc.

Inventor： Syed Aon Mujtaba ,  Tarik Tabet ,  Awais M. Hussain

IPC: H04W74/08 ,  H04W72/04

Abstract: This disclosure relates to accommodating link budget constrained wireless devices performing random access procedures. A base station may detect a preamble message from a wireless device. It may be determined that the preamble message is received from a link budget constrained wireless device. Characteristics of a response message may be selected based at least in part on determining that the preamble message is received from a link budget constrained wireless device. The response message may be transmitted to the link budget constrained wireless device using the selected characteristics.

公开(公告)号：US10244506B2

公开(公告)日：2019-03-26

申请号：US15860410

申请日：2018-01-02

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Syed Aon Mujtaba ,  Moustafa M. Elsayed

IPC: H04W68/00 ,  H04W72/04 ,  H04W76/28

Abstract: For paging user devices that are link budget limited (LBL), a base station transmits a special ID that is used by said devices to identify a paging frame and/or a paging occasion. When transmitting a paging message for an LBL device, the base station may use: (a) larger aggregation and larger CFI (than conventionally allowed) and (b) a larger number of resource blocks (than conventionally allowed) for paging payload. If paging messages for LBL devices saturate the paging frame capacity, the base station may allocate a plurality of special IDs. If paging messages for LBL devices and/or other data transfers saturate network capacity, at least a subset of the LBL devices may be directed to enter a connected-state discontinuous reception (DRX) mode, wherein those devices will remain in connected mode and periodically check for resource allocations. Paging payload information may be repeatedly transmitted in successive subframes, to support soft combining.

公开(公告)号：US10206223B2

公开(公告)日：2019-02-12

申请号：US15014498

申请日：2016-02-03

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  Tarik Tabet ,  Syed A. Mujtaba

IPC: H04W72/12 ,  H04W76/15 ,  H04L1/18 ,  H04L5/14 ,  H04W72/04 ,  H04W76/02 ,  H04L5/00 ,  H04W84/12 ,  H04W16/14 ,  H04L27/00

Abstract: Apparatus and methods for time division based communication between a wireless device and a wireless network in a licensed radio frequency (RF) band and an unlicensed RF band are disclosed. The wireless device receives downlink control information (DCI), via a primary component carrier (PCC) of a primary cell (Pcell) in the licensed RF band, indicating downlink (DL) data transmission via a secondary component carrier (SCC) of a secondary cell (Scell) in the unlicensed RF band. The wireless device receives via the SCC part of the DL data transmission and transmits a control message via the PCC in response. The wireless device sends a scheduling request (SR) to the eNodeB and receives uplink (UL) transmission opportunities in a combination of the licensed RF band and the unlicensed RF band. The wireless device performs a clear channel assessment before reserving and transmitting to the eNodeB in the unlicensed RF band.

公开(公告)号：US20190045447A1

公开(公告)日：2019-02-07

申请号：US16053103

申请日：2018-08-02

Applicant: Apple Inc.

Inventor： Awais M. Hussain ,  Tarik Tabet ,  Lydi Smaini

IPC: H04W52/02 ,  H04L25/02 ,  H04W4/70

Abstract: This disclosure relates to techniques for selecting operational modes of a wireless device. The operational mode may be selected based on determining the presence or absence of reference symbols. A low power mode may be selected when the presence or absence of reference symbols suggests that a control channel used by the wireless device may not be present.