公开(公告)号：US10667294B2

公开(公告)日：2020-05-26

申请号：US15558003

申请日：2015-12-24

Applicant: INTEL IP CORPORATION

Inventor： Youn Hyoung Heo ,  Hwan-Joon Kwon

IPC: H04W4/00 ,  H04W74/08 ,  H04L27/26 ,  H04W72/04 ,  H04W72/14 ,  H04W72/12 ,  H04W88/02

Abstract: Carrier-sensing techniques for LTE-based transmissions over unlicensed carriers are described. In one embodiment, for example, an apparatus may comprise at least one memory and logic for user equipment (UE), at least a portion of the logic comprised in circuitry coupled to the at least one memory, the logic to cause the UE to receive an uplink (UL) grant indicating a transmit subframe, the transmit subframe to comprise a subframe during which the UE is authorized to perform UL transmission via an unlicensed carrier, the logic to cause the UE to determine whether the UL grant comprises a listen-before-talk (LBT)-contingent UL grant and in response to a determination that the UL grant comprises an LBT-contingent UL grant, identify an LBT interval for the transmit subframe and perform an LBT procedure during the LBT interval to determine whether the unlicensed carrier is idle. Other embodiments are described and claimed.

公开(公告)号：US20180331774A1

公开(公告)日：2018-11-15

申请号：US15770853

申请日：2016-04-01

Applicant: Intel IP Corporation

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

IPC: H04J11/00 ,  H04W16/14 ,  H04W16/10 ,  H04W16/32

CPC classification number: H04J11/0069 ,  H04J2211/005 ,  H04W16/10 ,  H04W16/14 ,  H04W16/32 ,  H04W74/0808

Abstract: A base station for secondary-cell (S-cell) operation in an unlicensed band is subject to listen-before-talk (LBT) rules. The apparatus generates S-cell discovery reference signal (DRS) that includes a primary synchronization signal (PSS) based on a cell ID associated with the base station, a secondary synchronization signal (SSS), a cell-specific reference signal (CRS), and optionally CSI-RS. Solutions are described for generating portions of the DRS to accommodate the placement of the DRS in arbitrary subframes.

公开(公告)号：US20180310193A1

公开(公告)日：2018-10-25

申请号：US15767861

申请日：2016-08-23

Applicant: Intel IP Corporation

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

IPC: H04W24/10 ,  H04L5/00 ,  H04L1/00 ,  H04B7/06 ,  H04B7/0456

CPC classification number: H04W24/10 ,  H04B7/0456 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04L1/0004 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0057 ,  H04L5/0091 ,  H04L27/0006

Abstract: Techniques for channel state information (CSI) reporting are discussed. One example apparatus at a user equipment can derive, for one or more subframes of a license assisted access (LAA) secondary cell (SCell), one or more channel measurements based on reference signals (e.g., cell-specific reference signals (CRS) or CSI reference signals (CSI-RS)), in those subframes; generate CSI that comprises a channel quality indicator (CQI) based on an average of the one or more channel measurements from multiple subframes comprising a first subframe and a later second subframe, wherein each orthogonal frequency division multiplexing (OFDM) symbol of a second slot of the first subframe is occupied, wherein each of a first three OFDM symbols of the second subframe are occupied, and wherein each OFDM symbol between the first subframe and the second subframe is occupied; and generate a CSI report that indicates the set of CSI parameters.

公开(公告)号：US10070478B2

公开(公告)日：2018-09-04

申请号：US14748802

申请日：2015-06-24

Applicant: Intel IP Corporation

Inventor： Hong He ,  Seunghee Han ,  Jong-Kae Fwu ,  Hwan-Joon Kwon

IPC: H04W76/28 ,  H04L5/00 ,  H04W52/02 ,  H04W76/15

Abstract: Devices and methods of reducing blind decoding attempts of user equipment (UE) suing carrier aggregation are generally described. The UE may determine at least one subframe in a modification period to monitor for a physical downlink control channel (PDCCH) formed in accordance with a Discontinuous Transmission Downlink Control Information (DTX DCI) format. The DTX DCI format may indicate whether the serving cell is in a DTX or non-DTX state. The UE may determine the DTX state of each serving cell from the DTX DCI format and monitor an enhanced PDCCH of each serving cell in the non-DTX state to provide a scheduling assignment for the UE, without monitoring each serving cell in the DTX state. The UE may receive higher layer signaling that indicates a repetition period and subframe offset for DTX DCI format transmissions or a bitmap of the DTX DCI format transmissions for subframes within each modification period.

公开(公告)号：US09961646B2

公开(公告)日：2018-05-01

申请号：US15327167

申请日：2015-08-21

Applicant: Intel IP Corporation

Inventor： Jeongho Jeon ,  Huaning Niu ,  Seunghee Han ,  Hwan-Joon Kwon

IPC: H04W16/14 ,  H04W52/24 ,  H04W52/14 ,  H04W72/12 ,  H04W52/28 ,  H04W72/04 ,  H04W84/12

CPC classification number: H04W52/243 ,  H04B17/345 ,  H04L5/001 ,  H04W16/14 ,  H04W52/143 ,  H04W52/242 ,  H04W52/262 ,  H04W52/267 ,  H04W52/281 ,  H04W52/283 ,  H04W52/34 ,  H04W52/367 ,  H04W52/38 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/1231 ,  H04W84/12

Abstract: An enhanced NodeB (eNB), user equipment (UE) and communication methods therebetween using an unlicensed channel of an unlicensed band are generally described. The eNB measures an interference power level (IPL) of the unlicensed channel at the eNB and determine a transmit power level (TPL) for a downlink transmission based on the IPL, the TPL decreasing with increasing IPL. Feedback including unlicensed channel conditions measured by the UE is used by the eNB to determine the UE-eNB proximity. The eNB determines whether to transmit the downlink transmission to the UE based on the IPL and the proximity; as the IPL increases, the eNB services increasingly proximate UEs until, when the IPL exceeds a predetermined threshold, the eNB does not service any UE using the unlicensed channel. The eNB schedules and transmits the downlink transmission to the UE using the transmit power level.

公开(公告)号：US20180035303A1

公开(公告)日：2018-02-01

申请号：US15728029

申请日：2017-10-09

Applicant: Intel IP Corporation

Inventor： Abhijeet Bhorkar ,  Hwan-Joon Kwon ,  Christian Ibars Casas

IPC: H04W16/14 ,  H04L1/18 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08 ,  H04W88/12

CPC classification number: H04W16/14 ,  H04L1/1812 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/10 ,  H04W88/12

Abstract: Disclosed in some examples are systems, machine-readable media, methods, and cellular wireless devices which implement a Listen-Before-Talk (LBT) access scheme for a device operating according to a cellular wireless protocol in an unlicensed channel. A cellular wireless device may utilize the cellular wireless protocol in the unlicensed channel after the LBT access scheme has determined that a channel (a defined range of frequencies) in the unlicensed channel is idle for a particular period of time.

公开(公告)号：US20180020365A1

公开(公告)日：2018-01-18

申请号：US15546257

申请日：2015-09-22

Applicant: INTEL IP CORPORATION

Inventor： Gang Xiong ,  Debdeep Chatterjee ,  Seunghee Han ,  Jong-Kae Fwu ,  Hwan-Joon Kwon

IPC: H04W24/02 ,  H04W72/04 ,  H04W4/00 ,  H04W28/06 ,  H04W88/02 ,  H04W72/12

CPC classification number: H04W24/02 ,  H04W4/70 ,  H04W28/06 ,  H04W72/04 ,  H04W72/1278 ,  H04W74/0833 ,  H04W74/0883 ,  H04W88/02

Abstract: Techniques, apparatus and methods are disclosed that enable reduced signaling overhead in a fifth generation (5G) wireless system. The system includes support for asynchronous uplink transmission, resource pool configuration, acknowledgement response and retransmission. For example, in a Type-1 transmission scheme, a user equipment (UE) selects one resource within the resource pool and transmits data in the uplink on the selected resource. In a Type-2 transmission scheme, a UE selects one resource within a scheduling request (SR) region in the resource pool, transmits the SR for the resource which contains the resource allocation for data transmission, and transmits the uplink data on the resource which is indicated in the SR information. In a Type-3 transmission scheme, a UE selects a resource within the SR region, transmits the SR on the selected resource with information on the resource selected for subsequent data transmission and transmits on the indicated resource if it receives an acknowledgment, in response to its transmitted SR.

公开(公告)号：US09729283B2

公开(公告)日：2017-08-08

申请号：US14582492

申请日：2014-12-24

Applicant: Intel IP Corporation

Inventor： Hwan-Joon Kwon ,  Youn Hyoung Heo ,  Seunghee Han ,  Jong-Kae Fwu ,  Hong He

IPC: H04W72/04 ,  H04L5/00 ,  H04W28/08 ,  H04L1/18 ,  H04W74/08

CPC classification number: H04L5/001 ,  H04L1/18 ,  H04L1/1887 ,  H04L1/1893 ,  H04L5/0055 ,  H04L2001/0092 ,  H04W28/085 ,  H04W72/0486 ,  H04W74/0808

Abstract: A hybrid automatic repeat request (HARQ) process enables a retransmission to be sent on a carrier (or medium, set of frequencies, band, etc.) different from the carrier on which the previous transmissions (initial transmission and/or retransmissions) were sent. An enhanced HARQ process can improve system performance by aiding user throughput, system throughput, and delay performance by making retransmissions possible even when the unlicensed band is not available (e.g., when occupied by other RATs or the same RAT deployed by another operator). For example, a transmitter sends a subpacket in an unlicensed band. The receiver feeds back a NACK to the transmitter due to the packet decoding failure. If the medium is not idle, the transmitter sends the retransmission in another band or another channel that can be either a licensed band/channel or another unlicensed band/channel. The retransmission can be sent in multiple licensed and/or unlicensed bands/channels at the same time.

公开(公告)号：US09686064B2

公开(公告)日：2017-06-20

申请号：US14751054

申请日：2015-06-25

Applicant: Intel IP Corporation

Inventor： Hong He ,  Seunghee Han ,  Hwan-Joon Kwon ,  Gang Xiong

IPC: H04L5/00 ,  H04L1/18

CPC classification number: H04L5/0048 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/0055

Abstract: Devices and methods of reducing overall Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK) of user equipment (UE) using a large amount of carrier aggregation are generally described. The UE may receive a subframe from an enhanced NodeB (eNB). The subframe may contain a physical downlink control channel (PDCCH) formed in accordance with a Downlink Control information (DCI) format. The DCI format may comprise a Downlink Assignment Index (DAI) for Time Division Duplexed (TDD) and Frequency Division Duplexed (FDD) operation. The UE may determine, dependent on the DAI, a number and ordering of Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK) bits to be transmitted on a Physical Uplink Shared Channel (PUSCH) and subsequently transmit the HARQ-ACK bits.

公开(公告)号：US20150350992A1

公开(公告)日：2015-12-03

申请号：US14697369

申请日：2015-04-27

Applicant: Intel IP Corporation

Inventor： Seunghee Han ,  Gi Wan Choi ,  Hwan-Joon Kwon ,  Apostolos Papathanassiou ,  Jong-Kae Fwu

IPC: H04W36/26

CPC classification number: H04W36/26 ,  H04B7/024 ,  H04B7/0417

Abstract: Methods and apparatuses for communicating in a wireless network include a signal processor for combining a plurality of signals transmitted by respective eNBs by processing the signals as multipath instances of a single signal.

Abstract translation: 用于在无线网络中进行通信的方法和装置包括信号处理器，用于通过将信号处理为单个信号的多路径实例来组合由各个eNB发送的多个信号。