公开(公告)号：US10660114B2

公开(公告)日：2020-05-19

申请号：US15969653

申请日：2018-05-02

Applicant: Apple Inc.

Inventor： Yang Li ,  Wei Zeng ,  Zhu Ji ,  Beibei Wang ,  Jia Tang ,  Yuchul Kim ,  Haijing Hu ,  Dawei Zhang ,  Xiangying Yang ,  Sami M. Almalfouh ,  Johnson O. Sebeni ,  Wei Zhang ,  Tianyan Pu

IPC: H04W72/12 ,  H04W76/16 ,  H04J1/00 ,  H04W84/04 ,  H04W88/06

Abstract: Apparatuses, systems, and methods for a wireless device to perform simultaneous uplink activity for multiple RATs in the same carrier using frequency division multiplexing. The wireless device may establish a first wireless link with a first base station according to a first radio access technology (RAT) and a second wireless link with a second base station according to a second RAT. The first base station may provide a first cell operating in a first system bandwidth and the second base station may provide a second cell operating in a second system bandwidth. The wireless device may determine whether the wireless device has uplink activity scheduled according to both the first RAT and the second RAT. If so, the wireless device may perform uplink activity for both the first RAT and the second RAT in the first system bandwidth using frequency division multiplexing.

公开(公告)号：US10609700B2

公开(公告)日：2020-03-31

申请号：US15923078

申请日：2018-03-16

Applicant: Apple Inc.

Inventor： Johnson O. Sebeni ,  Yang Li ,  Zhu Ji ,  Yuchul Kim ,  Wei Zeng ,  Dawei Zhang ,  Haijing Hu ,  Xiangying Yang ,  Li Su

IPC: H04W72/04 ,  H04W76/28 ,  H04W52/02 ,  H04W84/04

Abstract: A downlink control information (DCI), such as a blanking DCI (bDCI) message may be transmitted by a base station (e.g., eNB) and received by a mobile device (e.g., UE). The bDCI may indicate that the eNB will not transmit a subsequent DCI to the UE for a duration of time. The UE may be in continuous reception mode or connected discontinuous reception (C-DRX) mode. The UE may therefore determine to enter a sleep state or take other action. The bDCI may specify an explicit blanking duration, or an index indicating a blanking duration from a lookup table, and/or the blanking duration (and/or a blanking duration offset value) may be determined in advance, e.g., semi-statically. When the UE is in C-DRX mode, the UE may be configured such that either the sleep/wake period of the C-DRX mode or the blanking period of the bDCI may take precedence over the other.

公开(公告)号：US10595319B2

公开(公告)日：2020-03-17

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：US10484150B2

公开(公告)日：2019-11-19

申请号：US15341301

申请日：2016-11-02

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Joonsuk Kim

IPC: H04L1/18 ,  H04L12/741 ,  H04W84/12

Abstract: This disclosure relates to performing retransmissions in a wireless communication system by a wireless device. A wireless device may receive a first transmission of a data frame according to a wireless communication technology. The wireless device may attempt to decode the data frame. It may be determined that attempting to decode the data frame is unsuccessful. A retransmission of the data frame may be received at a retransmission interval after the first transmission of the data frame. The retransmission interval may be less than a minimum interframe interval for contending for medium access for new transmissions according to the wireless communication technology.

公开(公告)号：US10477475B2

公开(公告)日：2019-11-12

申请号：US15892859

申请日：2018-02-09

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Wei Zeng ,  Dawei Zhang

IPC: H04W52/02 ,  H04W72/04 ,  H04W4/08

Abstract: A wireless communication device (UE) may receive control indicator information (CII) indicating whether one or more candidate physical control channels (PCCs) are available to the UE for decoding. The UE may perform respective blind decoding if the CII indicates that the one or more candidate PCCs are available, to decode a respective PCC intended for the UE. The UE may receive the CII in the same slot in which PCCs are transmitted, or it may receive the CII in another slot, which may be a narrowband slot. The UE may receive the PCCs in the same slot in which corresponding physical data channels (PDCs) are transmitted, or it may receive the PCCs in another slot, e.g. a slot immediately preceding the slot in which the corresponding PDCs are transmitted. By eliminating unnecessary blind decoding and receiving the CII over narrowband, power consumption of the UE may be greatly reduced.

公开(公告)号：US20190281652A1

公开(公告)日：2019-09-12

申请号：US16295517

申请日：2019-03-07

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Yuchul Kim ,  Junsung Lim ,  Haitong Sun ,  Wei Zeng ,  Sami M. Almalfouh ,  Yang Li ,  Zhu Ji ,  Dawei Zhang ,  Johnson O. Sebeni

IPC: H04W76/28 ,  H04W72/04 ,  H04W76/25 ,  H04W24/10

Abstract: Apparatuses, systems, and methods for a base station to perform a method construct dynamic hierarchical sub-configurations of bandwidth parts (BWPs) for use in a connected mode discontinuous reception (CDRX) communication session with a user equipment (UE) device. The base station may configure a first BWP at a baseband frequency associated with the CDRX communication session as a default BWP, a second BWP with a wider bandwidth than the first BWP as a transmission BWP, and one or more third BWPs as resting BWPs. The transmission BWP and the one or more resting BWPs may be configured to periodically override the default BWP as the active BWP for a predetermined number of CDRX cycles. The transmission BWP may be utilized, when activated to perform data transmission by UE device, and the one or more resting BWPs may be utilized, when activated, for performing channel measurements.

公开(公告)号：US20190007823A1

公开(公告)日：2019-01-03

申请号：US16125799

申请日：2018-09-10

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Xiaowen Wang ,  Tarik Tabet ,  Dawei Zhang ,  Syed Aon Mujtaba

IPC: H04W8/00 ,  H04W52/02 ,  H04W76/14

CPC classification number: H04W8/005 ,  H04W52/0241 ,  H04W76/14 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/26

Abstract: In some embodiments, a user equipment device (UE) implements a method for discovering the presence of neighboring UEs using an on-demand discovery signal transmission technique. This discovery process may be performed to enable the UEs to perform peer-to-peer communications with each other, wherein peer-to-peer communications is defined as direct communication between the UEs without involving a base station. The UE may be configured to transmit a discovery request signal when it has moved greater than a threshold amount since transmission of a prior discovery request signal. The discovery request signal causes one or more neighboring UEs to each transmit a discovery signal in response, and also causes the UE which generated the discovery request signal to transmit its own discovery signal. The received discovery signal from each of the neighboring UEs is useable to discover, or detect the presence of, these neighboring UEs.

公开(公告)号：US20180368153A1

公开(公告)日：2018-12-20

申请号：US15969653

申请日：2018-05-02

Applicant: Apple Inc.

Inventor： Yang Li ,  Wei Zeng ,  Zhu Ji ,  Beibei Wang ,  Jia Tang ,  Yuchul Kim ,  Haijing Hu ,  Dawei Zhang ,  Xiangying Yang ,  Sami M. Almalfouh ,  Johnson O. Sebeni ,  Wei Zhang ,  Tianyan Pu

IPC: H04W72/12

Abstract: Apparatuses, systems, and methods for a wireless device to perform simultaneous uplink activity for multiple RATs in the same carrier using frequency division multiplexing. The wireless device may establish a first wireless link with a first base station according to a first radio access technology (RAT) and a second wireless link with a second base station according to a second RAT. The first base station may provide a first cell operating in a first system bandwidth and the second base station may provide a second cell operating in a second system bandwidth. The wireless device may determine whether the wireless device has uplink activity scheduled according to both the first RAT and the second RAT. If so, the wireless device may perform uplink activity for both the first RAT and the second RAT in the first system bandwidth using frequency division multiplexing.

公开(公告)号：US20180310284A1

公开(公告)日：2018-10-25

申请号：US15957612

申请日：2018-04-19

Applicant: Apple Inc.

Inventor： Wei Zeng ,  Yuchul Kim ,  Dawei Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04W56/00 ,  H04W76/28

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/005 ,  H04W48/16 ,  H04W56/001 ,  H04W76/28

Abstract: This disclosure relates to techniques for a base station (BS) to configure default and supplementary sync signals (SS) at sub-band bandwidths in a wireless communication system. The supplementary SS may be configured in response to a determination that the BS is in wireless communications with a UE using a single narrow band radio-frequency chain. The BS may configure the supplementary SS to be proximate in frequency to a PDCCH search space currently in use by the UE. The default SS may be configured to support initial access and may have a shorter periodicity, while the supplementary SS may be configured to not support initial access and may have a longer periodicity. The BS may additionally or alternatively configure a tracking reference signal (RS), wherein the tracking RS is configured on-demand based on a current network load of the BS. The tracking RS may be configured at a sub-band bandwidth, wherein the sub-band bandwidth is selected based on a bandwidth allocated to an active UE in wireless communication with the BS.

公开(公告)号：US20180294936A1

公开(公告)日：2018-10-11

申请号：US16008880

申请日：2018-06-14

Applicant: Apple Inc.

Inventor： Joonsuk Kim ,  Yuchul Kim

IPC: H04L5/00 ,  H04L27/26 ,  H04L1/18 ,  H04W56/00 ,  H04L1/12 ,  H04L25/02 ,  H04W84/12

CPC classification number: H04L5/0048 ,  H04L1/12 ,  H04L1/1854 ,  H04L5/0023 ,  H04L25/0202 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04W56/002 ,  H04W84/12

Abstract: This disclosure relates to orthogonal frequency division multiple access (OFDMA) communication in wireless local area networks (WLANs). According to some embodiments, a downlink OFDMA frame may be transmitted. An uplink OFDMA frame including acknowledgements associated with the downlink OFDMA frame may be received. The uplink OFDMA frame may be processed, in some instances including determining which devices receiving the downlink OFDMA frame transmitted an acknowledgement associated with the downlink OFDMA frame in the uplink OFDMA frame.