公开(公告)号：US10917215B2

公开(公告)日：2021-02-09

申请号：US15941504

申请日：2018-03-30

Applicant: APPLE INC.

Inventor： Seunghee Han ,  Yuan Zhu ,  Xiaogang Chen ,  Alexei Davydov ,  Jong-Kae Fwu

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for transmission and reception of SPS communications are disclosed herein. User equipment (UE) is configured to receive, in a first subframe, a physical downlink control channel or enhanced physical downlink control channel (PDCCH/EPDCCH) corresponding to semi-persistent scheduling (SPS) activation. The PDCCH/EPDCCH conveys a value of nSCID. The UE configures, based on the SPS activation, a downlink (DL) assignment in a second subframe for receiving an SPS physical downlink shared channel (PDSCH) without a corresponding PDCCH/EPDCCH. The UE determines a reference signal sequence corresponding to the SPS PDSCH using nSCID derived from the PDCCH/EPDCCH corresponding to the associated SPS activation. The UE receives the SPS PDSCH in a second subframe. The UE processes the SPS PDSCH based on the reference signal sequence for the SPS PDSCH in the second subframe using the nSCID derived from the PDCCH/EPDCCH corresponding to the associated SPS activation. The UE is configured for transmission mode 10 (TM10).

公开(公告)号：US20210021393A1

公开(公告)日：2021-01-21

申请号：US16865690

申请日：2020-05-04

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Seunghee Han

IPC: H04L5/00 ,  H04W4/70 ,  H04L1/18

Abstract: Techniques for transmitting hybrid automatic repeat request (HARQ) feedback by narrowband Internet-of-Things (NB-IoT) devices are provided. NB-IoT user equipment (UE) can transmit HARQ feedback in response to a narrowband physical downlink shared channel (NPDSCH) received over a downlink (DL). NB-IoT UEs can transmit the responsive HARQ feedback over a narrowband physical uplink shared channel (NPUSCH) or a narrowband physical uplink control channel (NPUCCH). Options for defining the physical structures of the NPUCCH and NPUSCH and user multiplexing on the uplink (UL) are provided. Determination of an UL resource allocation by determining resources in time, frequency, and the code domain for the HARQ feedback transmissions are also provided. Higher level signaling and/or indications provided in downlink control information (DCI) can be used to determine the time, frequency, or code domain resources.

公开(公告)号：US10813071B2

公开(公告)日：2020-10-20

申请号：US16538823

申请日：2019-08-13

Applicant: Apple Inc.

Inventor： Seunghee Han ,  Gang Xiong ,  Alexei Davydov ,  Jong-Kae Fwu ,  Gi Wan Choi

IPC: H04W56/00 ,  H04L5/00

Abstract: Embodiments of an eNB to operate in accordance with a coverage enhancement mode are disclosed herein. The eNB may comprise hardware processing circuitry to, during a legacy sub-frame, transmit a system information block (SIB) in legacy SIB frequency resources according to a legacy SIB transmission format and refrain from transmission of channel state information reference signals (CSI-RS). The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first portion of the SIB in first SIB frequency resources included in the legacy SIB frequency resources. The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first set of CSI-RS in first CSI-RS frequency resources that include at least a portion of the legacy SIB frequency resources.

公开(公告)号：US20200305131A1

公开(公告)日：2020-09-24

申请号：US16192271

申请日：2018-11-15

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Gang Xiong ,  Seunghee Han

IPC: H04W72/04 ,  H04L1/18 ,  H04L1/00

Abstract: Systems, apparatus, user equipment (UE), evolved node B(eNB), and methods are described for machine-type communications (MTC) with early termination of repeated transmissions. In MTC implementations with narrow bandwidth, significant numbers of retransmissions may be scheduled based on channel quality measurements. If data is successfully decoded at a receiving device while a significant number of retransmissions remain, system resources are wasted. Embodiments described herein thus use downlink control messaging or intermediate hybrid automatic repeat request (HARQ) messaging for early termination of repeated messages.

公开(公告)号：US10757664B2

公开(公告)日：2020-08-25

申请号：US15566511

申请日：2015-12-24

Applicant: Apple Inc.

Inventor： Abhijeet Bhorkar ,  Christian Ibars Casas ,  Seunghee Han

IPC: H04W56/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W74/04 ,  H04W74/08

Abstract: Technology for contention free physical uplink shared control channel (PUSCH) transmission using listen before talk procedure is disclosed. In an example, an apparatus of a user equipment (UE) having circuitry configured to achieves low latency synchronization with an anchor enhanced Node (eNB) by sensing for a predetermined time period if any physical uplink shared channels (PUSCH) are idle with the anchor eNB for uplink (UL) synchronization; providing a unique UE identification in a PUSCH transmission; and communicating the PUSCH transmission in one of the idle PUSCH channels for contention free communication with the anchor eNB for uplink synchronization.

公开(公告)号：US20200154416A1

公开(公告)日：2020-05-14

申请号：US16707563

申请日：2019-12-09

Applicant: Apple Inc.

Inventor： Hong He ,  Seunghee Han ,  Alexei Vladimirovich Davydov ,  Gang Xiong

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L1/16 ,  H04W72/12 ,  H04L1/18 ,  H04W52/32

Abstract: Future LTE systems will support massive carrier aggregation that necessitates transmission of a large number of acknowledgement signals (HARQ-ACKs) in response to downlink data transmitted over multiple component carriers. Described herein are methods and apparatus for efficiently transmitting HARQ-ACK and periodic channel state information (P-CSI) bits over the PUCCH (physical uplink control channel).