公开(公告)号：US12120690B2

公开(公告)日：2024-10-15

申请号：US18469247

申请日：2023-09-18

Applicant: Apple Inc.

Inventor： Qiaoyang Ye ,  Hwan-Joon Kwon ,  Jeongho Jeon ,  Abhijeet Bhorkar

IPC: H04W72/21 ,  H04L5/00 ,  H04W72/23 ,  H04W16/14

CPC classification number: H04W72/21 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0082 ,  H04W72/23 ,  H04L5/001 ,  H04L5/0094 ,  H04W16/14

Abstract: Systems, apparatus, user equipment (UE), evolved node B (eNB), computer readable media, and methods are described for scheduling of multiple uplink transmissions in unlicensed spectrum. One embodiment involves receiving, at an eNB, a first uplink scheduling request from a UE, scheduling a plurality of uplink subframes on the unlicensed channel in response to the first uplink scheduling request, and initiating transmission of a first subframe to the first UE in response to the scheduling of the plurality of uplink subframes, wherein the first subframe comprises one or more downlink control indicators (DCIs) allocating the plurality of uplink subframes to the first UE.

公开(公告)号：US20220394770A1

公开(公告)日：2022-12-08

申请号：US17887223

申请日：2022-08-12

Applicant: Apple Inc.

Inventor： Jeongho Jeon ,  Abhijeet Bhorkar ,  Seunghee Han ,  Hwan-Joon Kwon

IPC: H04W74/08 ,  H04W74/00

Abstract: Devices, methods, user equipment (UE), evolved node B (eNB), and storage media are described suitable for coexistence operations for uplink communications on multiple unlicensed carriers. Various embodiments are implemented in LTE systems with license-assisted access (LAA) associated communications. In one embodiment, a UE processes one or more uplink grants from an eNB scheduling transmissions on multiple unlicensed carriers at a first time, and indicating a first channel access procedure. The UE then selects a first unlicensed carrier and performs the first channel access procedure, and performs a second channel access procedure on a second unlicensed carrier of the multiple unlicensed carriers.

公开(公告)号：US11412535B2

公开(公告)日：2022-08-09

申请号：US15775745

申请日：2016-03-29

Applicant: Apple Inc.

Inventor： Qiaoyang Ye ,  Hwan-Joon Kwon ,  Jeongho Jeon ,  Abhijeet Bhorkar

IPC: H04W72/12 ,  H04W72/14 ,  H04L5/00 ,  H04W72/04 ,  H04W16/14

Abstract: Systems, apparatus, user equipment (UE), evolved node B (eNB), computer readable media, and methods are described for scheduling of multiple uplink transmissions in unlicensed spectrum. One embodiment involves receiving, at an eNB, a first uplink scheduling request from a UE, scheduling a plurality of uplink subframes on the unlicensed channel in response to the first uplink scheduling request, and initiating transmission of a first subframe to the first UE in response to the scheduling of the plurality of uplink subframes, wherein the first subframe comprises one or more downlink control indicators (DCIs) allocating the plurality of uplink subframes to the first UE.

公开(公告)号：US11368981B2

公开(公告)日：2022-06-21

申请号：US16085532

申请日：2017-04-14

Applicant: Apple Inc.

Inventor： Qiaoyang Ye ,  Huaning Niu ,  Abhijeet Bhorkar ,  Seau S. Lim ,  Jeongho Jeon

IPC: H04W4/00 ,  H04W74/08 ,  H04W74/00

Abstract: Described is an apparatus of an Evolved Node-B (eNB) operable to communicate with a User Equipment (UE) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to initiate a Listen-Before-Talk (LBT) procedure on a bandwidth of the wireless network, the bandwidth being unlicensed spectrum. The second circuitry may be operable to generate a transmission if the LBT procedure indicates that the bandwidth is idle, the transmission comprising a Physical Random Access Channel (PRACH) preamble portion and a message portion.

公开(公告)号：US11140712B2

公开(公告)日：2021-10-05

申请号：US16779859

申请日：2020-02-03

Applicant: Apple Inc.

Inventor： Abhijeet Bhorkar ,  Hwan-Joon Kwon ,  Jeongho Jeon ,  Qiaoyang Ye

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

Abstract: Techniques for transmission of a physical downlink control channel (PDCCH) or enhanced PDCCH (EPDCCH) within a partial subframe of a license assisted access (LAA) burst are discussed. One example apparatus comprises a processor configured to generate a LAA burst; generate one or more downlink control channel messages that comprise at least one of PDCCH messages or EPDCCH messages; generate a physical layer encoding of the LAA burst comprising a first partial subframe, wherein the first partial subframe comprises a physical layer encoding of the one or more downlink control channel messages; and output the first partial subframe comprising the physical layer encoding of the one or more control channel messages to transmitter circuitry for subsequent transmission via an unlicensed carrier.

公开(公告)号：US11102814B2

公开(公告)日：2021-08-24

申请号：US15745424

申请日：2015-12-24

Applicant: Apple Inc.

Inventor： Abhijeet Bhorkar ,  Hwan-Joon Kwon ,  Christian Ibars Casas ,  Seunghee Han ,  Qiaoyang Ye

IPC: H04W74/08 ,  H04L5/00 ,  H04W48/16 ,  H04W72/04 ,  H04L27/00

Abstract: Described are mechanisms for eNB support of DRS in LAA, in which DRS is transmitted at one or more DRS occasions within a DMTC window, subject to LBT. In some embodiments, an eNB may include hardware processing circuitry comprising an antenna port, a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to determine a DMTC window of a wireless communication channel. The second circuitry may be operable to initiate one or more CCA checks through an antenna coupled to the antenna port prior to a DRS occasion within a DMTC time window. The third circuitry may be operable to initiate a DRS transmission through the antenna within the DMTC window upon a CCA check of the set of one or more CCA checks sensing that the wireless communication channel is idle. Also described are mechanisms for proactive support of DRS in LAA.

公开(公告)号：US10951360B2

公开(公告)日：2021-03-16

申请号：US15766466

申请日：2016-12-09

Applicant: Apple Inc.

Inventor： Jeongho Jeon ,  Abhijeet Bhorkar ,  Qiaoyang Ye ,  Fatemeh Hamidi-Sepehr ,  Hwan-Joon Kwon

IPC: H04L1/18 ,  H04L1/16 ,  H04L5/14 ,  H04W16/14 ,  H04W84/04

Abstract: The present disclosure provides for a user equipment (UE) operating in an unlicensed spectrum in time division duplex (TDD). Operating a UE in an unlicensed spectrum in TDD can comprise generating a bitmap message. Generating a bitmap message can include accessing a bitmap comprising a plurality of positions based on a plurality of supported HARQ processes including the HARQ process, mapping a HARQ process identifier (ID) of the HARQ process to a position from the plurality of positions of the partitioned bitmap, and generating a bitmap message comprising the ACK/NACK message in the position of the bitmap corresponding to the HARQ process ID.

公开(公告)号：US20210076406A1

公开(公告)日：2021-03-11

申请号：US17101850

申请日：2020-11-23

Applicant: APPLE INC.

Inventor： Abhijeet Bhorkar ,  Huaning Niu ,  Seau S. Lim ,  Jeongho Jeon ,  Qiaoyang Ye

IPC: H04W72/12 ,  H04W74/08 ,  H04W76/27 ,  H04L5/00

Abstract: A number of embodiments can describe the operation of a UE in an unlicensed spectrum. Operating a UE in an unlicensed spectrum can include processing a PDCCH transmission provided by an eNodeB to identify a resource for a transmission of the SR message and based on the resource identified in the PDCCH, generating a PUCCH transmission comprising the SR message for the eNodeB.

公开(公告)号：US10827525B2

公开(公告)日：2020-11-03

申请号：US15742388

申请日：2015-12-21

Applicant: APPLE INC.

Inventor： Abhijeet Bhorkar ,  Hwan-Joon Kwon

IPC: H04W74/08 ,  H04W72/14 ,  H04L5/00 ,  H04W16/14 ,  H04W72/12

Abstract: Licensed assisted access (LAA) uplink (UL) transmissions can be performed using UL scheduling, enhanced node B (eNB) listen before talk (LBT), and user equipment (UE) LBT. A scheduling of a UE for UL transmission can include different procedures for a UE to perform LBT before UL transmission. These procedures can be classified as: i) a scheduled UE performing no LBT for UL transmission, ii) a scheduled UE performing fast LBT (as compared to the eNB) with a more aggressive choice of parameters than the eNB and iii) a scheduled UE performing LBT using parameters as used by the eNB for LBT. In some embodiments, the UL grant transmission by the eNB occurs in the unlicensed band after a successful LBT procedure at the eNB.

公开(公告)号：US20200154318A1

公开(公告)日：2020-05-14

申请号：US16745814

申请日：2020-01-17

Applicant: Apple Inc.

Inventor： Abhijeet Bhorkar ,  Laurent Cariou ,  Hwan Joon Kwon

IPC: H04W28/18 ,  H04W74/08

Abstract: When performing a contention protocol, such as Listen-Before-Talk (LBT), an Long Term Evolution (LTE)-Licensed Assisted Access (LAA) node dynamically adapts the ED threshold used by the LTE-LAA node depending on whether other transmission nodes are detected at the frequency components that are to be used by the LTE-LAA node. In one implementation, the ED threshold value may initially be set to a conservative value, and when other transmissions nodes are not detected, the ED threshold value may be set to a more aggressive value. In another implementation, the ED threshold value may initially be set to a more aggressive value, and only when another transmission node is detected, the ED threshold value may be set to a more conservative value. In yet another possible implementation, the ED threshold value and the transmit power may be proportionally modified, for a particular UE, based on a parameter associated with the UE.