公开(公告)号：WO2018204654A1

公开(公告)日：2018-11-08

申请号：PCT/US2018/030902

申请日：2018-05-03

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  SUN, Jing ,  CHEN, Wanshi ,  RICO ALVARINO, Alberto ,  GAAL, Peter

IPC: H04W72/04

Abstract: Configuration of downlink and uplink partial subframes in shared radio frequency (RF) spectrum is discussed. The various described aspects provide for different configurations for start and end transmissions from base stations and user equipments (UEs) when transmitting over partial subframes. With downlink initial partial subframes, a uniform puncturing may be used to reduce the number of resource elements (REs) available for downlink transmission without causing the base station to re-precode any of the data. Additional aspect for downlink partial subframe transmission allows for downlink control channels to identify multiple start points within the subframe at short downlink shared channel locations. On the uplink aspect, UEs may be informed with configurations for both full and partial subframe transmissions. The UE will select which configuration to use based on whether it will transmit on full or partial subframes. Additionally, a UE have scheduled or semi-scheduled modes for partial subframe transmissions.

公开(公告)号：WO2018175519A1

公开(公告)日：2018-09-27

申请号：PCT/US2018/023464

申请日：2018-03-21

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  GAAL, Peter ,  MONTOJO, Juan ,  SUN, Jing

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

Abstract: Techniques provide for identification of a starting location for a transmission that provides a relatively short time period between completion of a successful contention-based access procedure (e.g., a listen before talk (LBT) procedure) and transmission of data between a base station and a user equipment (UE). In the event that an LBT procedure is successfully completed after the start of a subframe, an indication of a transmission may be transmitted at one of a number of predetermined points within the subframe time duration. In some cases, two or more different partial subframe durations may be configured, and one or more different partial subframes may be used for transmissions until the start of a subsequent subframe. An uplink trigger may be transmitted in a partial subframe to indicate one or more of a starting point of the uplink wireless transmission or an ending point of the uplink wireless transmission.

公开(公告)号：WO2018169987A1

公开(公告)日：2018-09-20

申请号：PCT/US2018/022224

申请日：2018-03-13

Applicant: QUALCOMM INCORPORATED

Inventor： LIU, Chih-Hao ,  YERRAMALLI, Srinivas ,  KADOUS, Tamer

IPC: H04W48/18 ,  H04W36/06 ,  H04W4/00

Abstract: Described techniques provide for switching a user equipment (UE) between different coverage enhancement (CE) modes, such as between a non-CE mode and a CE mode. A UE may determine that a CE mode switch is to be performed and may initiate the mode switching. The UE may compare signal qualities of signals from one or more base stations against one or more threshold values and determine that a switch from a CE mode to a non-CE mode, or from a non-CE to CE mode, is to be performed. In some cases, a UE may be in idle mode and switch between CE modes, or may perform a cell reselection to a different base station. In other cases, a UE may be in connected mode and may declare a radio link failure to initiate a mode switch. A base station may initiate mode switching based on radio link monitoring of UEs.

公开(公告)号：WO2018156269A1

公开(公告)日：2018-08-30

申请号：PCT/US2018/014174

申请日：2018-01-18

Applicant: QUALCOMM INCORPORATED

Inventor： LIU, Chih-Hao ,  YERRAMALLI, Srinivas ,  KADOUS, Tamer Adel

IPC: H04W16/14 ,  H04W68/02

Abstract: In an embodiment, an apparatus (e.g., eNB) pages UEs on a shared communication. The apparatus obtains paging message(s) for transmission to UEs with different coverage levels. The apparatus transmits an extended common ePDCCH, followed by a paging ePDCCH, followed by repetitive transmissions of the paging message(s) over a plurality of PDSCH subframes. In a further embodiment, the apparatus obtains first and second sets of paging messages for transmission to different paging groups. The apparatus establishes non-overlapping POWs for the first and second paging groups to avoid a paging ePDCCH collision.

公开(公告)号：WO2018151898A1

公开(公告)日：2018-08-23

申请号：PCT/US2018/014336

申请日：2018-01-19

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  GAAL, Peter ,  MESHKATI, Farhad

IPC: H04W16/14 ,  H04W48/16 ,  H04W24/10

Abstract: Aspects of the disclosure provide methods and apparatus for enhanced reporting in for a UE operating in a shared spectrum. The UE may detect at least one parameter associated with a non-serving base station (BS) operating in a same spectrum as a serving BS and report, to the serving BS, an indication of the (at least one) parameter.

公开(公告)号：WO2018089239A1

公开(公告)日：2018-05-17

申请号：PCT/US2017/059554

申请日：2017-11-01

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyedkianoush ,  YERRAMALLI, Srinivas ,  CHEN, Wanshi ,  SUN, Jing ,  XU, Hao ,  PATEL, Shimman Arvind

IPC: H04W72/12 ,  H04L1/18 ,  H04W72/14 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit uplink (UL) messages in unlicensed spectrum with a reduced UL timing delay. The UL timing delay may be reduced by using a shortened transmission time interval (TTI) (e.g., a TTI that is reduced in duration relative to other TTIs in the system or in a legacy system) or by reducing the number of TTIs between a grant and the corresponding UL message. The reduced UL timing delay may decrease the likelihood that the UE will wait for a subsequent transmit opportunity (TxOp) to transmit the UL message. In some cases, the reduced UL timing delay corresponds to a reduced hybrid automatic repeat request (HARQ) processing delay. In some cases, a time difference (e.g., measured in TTIs) between a measurement reference TTI a corresponding channel state information (CSI) report may also be reduced.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 用户设备（UE）可以在减少的UL定时延迟的未经许可的频谱中发送上行链路（UL）消息。 通过使用缩短的传输时间间隔（TTI）（例如，相对于系统中或传统系统中的其他TTI的持续时间减少的TTI）或者通过减少授权之间的TTI的数量可以减少UL定时延迟 和相应的UL消息。 缩短的UL定时延迟可以降低UE将等待后续传输机会（TxOp）发送UL消息的可能性。 在一些情况下，缩短的UL定时延迟对应于减少的混合自动重传请求（HARQ）处理延迟。 在一些情况下，也可以减少测量参考TTI和对应的信道状态信息（CSI）报告之间的时间差（例如，在TTI中测量）。

公开(公告)号：WO2018085153A1

公开(公告)日：2018-05-11

申请号：PCT/US2017/058849

申请日：2017-10-27

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  KADOUS, Tamer ,  LIU, Chih-Hao ,  PATEL, Chirag ,  RICO ALVARINO, Alberto

IPC: H04W74/08 ,  H04B1/713 ,  H04L5/00 ,  H04W16/14

Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A UE apparatus transmits uplink transmissions in a plurality of transmission units and hops frequency bands in a first pattern across frames based on a base station hopping pattern. The apparatus may transmit uplink transmissions based on dual hopping patterns, and may hop in a second pattern across transmission units within the base station's channel occupancy within a frame. A base station apparatus may hop frequency bands in a first pattern across frames based on a base station hopping pattern, and may receive uplink transmissions in a narrowband from a UE in a plurality of transmission units within the frequency bands based on the base station hopping pattern.

Abstract translation: 用于例如在窄带UE和宽带eNB之间的具有不同带宽的eNB和UE之间的未经许可的频谱中的无线通信的方法和设备。 UE装置基于基站跳频模式跨多个帧以多个传输单元传输上行链路传输并以第一模式跳跃频带。 该设备可以基于双跳模式传送上行链路传输，并且可以在帧内基站的信道占用内的传输单元上以第二模式跳变。 基站设备可以基于基站跳频模式在跨帧的第一模式中跳频频带，并且可以基于基站跳频模式在频带内的多个传输单元中从UE接收在窄带中的上行链路传输

公开(公告)号：WO2018085150A1

公开(公告)日：2018-05-11

申请号：PCT/US2017/058835

申请日：2017-10-27

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  KADOUS, Tamer ,  LIU, Chih-Hao ,  PATEL, Chirag ,  RICO ALVARINO, Alberto

IPC: H04W74/08

Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A base station apparatus may perform a dual CCA procedure for a frame, wherein the dual CCA procedure comprises a first type of CCA procedure followed by a second type of CCA procedure when the first type of CCA procedure is unsuccessful. The apparatus may transmit during the frame when at least one CCA procedure of the dual CCA procedure is successful and may refrain from transmitting during the frame when both CCA procedures of the dual CCA procedure are unsuccessful. In performing the dual CCA procedure, the apparatus may perform CCA for a first period of time then perform eCCA for a second period of time following the CCA, when the CCA is unsuccessful.

Abstract translation: 用于例如在窄带UE和宽带eNB之间的具有不同带宽的eNB和UE之间的未经许可的频谱中的无线通信的方法和设备。 基站设备可以针对帧执行双CCA过程，其中，当第一类型的CCA过程不成功时，双CCA过程包括第一类型的CCA过程，随后是第二类型的CCA过程。 当双CCA过程的至少一个CCA过程成功时，该装置可以在该帧期间进行发送，并且当双CCA过程的两个CCA过程都不成功时，该装置可以在该帧期间避免发送。 在执行双CCA过程中，装置可以在第一时间段内执行CCA，然后在CCA之后的第二时间段内执行eCCA，当CCA不成功时。

公开(公告)号：WO2018085149A1

公开(公告)日：2018-05-11

申请号：PCT/US2017/058824

申请日：2017-10-27

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  KADOUS, Tamer ,  LIU, Chih-Hao ,  PATEL, Chirag ,  RICO ALVARINO, Alberto

IPC: H04W72/04

Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A user equipment apparatus segments an uplink duration in each frame into multiple transmission units for each frequency, wherein a frame comprises an integer number of the transmission units. The apparatus transmits uplink communication based on the multiple transmission units, wherein each transmission unit comprises at least one on period and at least one off period corresponding to each of a plurality of frequencies, wherein during an on period the UE transmits uplink communication on the corresponding frequency and during an off period the UE refrains from transmitting uplink communication on the corresponding frequency. Each transmission unit may comprise multiple on periods and multiple off periods. The on/off periods may be configured by a base station or specified for each frame type.

Abstract translation: 用于例如在窄带UE和宽带eNB之间的具有不同带宽的eNB和UE之间的未经许可的频谱中的无线通信的方法和设备。 用户设备装置将每个帧中的上行链路持续时间分割成每个频率的多个传输单元，其中帧包括整数个传输单元。 该装置基于多个传输单元传输上行链路通信，其中每个传输单元包括与多个频率中的每一个相对应的至少一个开启时段和至少一个关闭时段，其中在开启时段期间，UE在对应 频率，并且在关闭时段期间，UE禁止在对应的频率上发送上行链路通信。 每个传输单元可以包括多个开启周期和多个关闭周期。 开/关期可由基站配置或为每种帧类型指定。

公开(公告)号：WO2018081101A2

公开(公告)日：2018-05-03

申请号：PCT/US2017/058062

申请日：2017-10-24

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  CHENDAMARAI KANNAN, Arumugam ,  PATEL, Chirag, Sureshbhai

IPC: H04W72/14

Abstract: Techniques are described for wireless communication. One method includes receiving, from a network access device, an uplink grant to transmit over a channel of a shared radio frequency spectrum band. The uplink grant indicates a number of subframes and a transmission window having a duration of a plurality of subframes. The method further includes contending for access to the channel of the shared radio frequency spectrum band based at least in part on a listen before talk (LBT) procedure and in accordance with the uplink grant; and transmitting an uplink transmission over the channel of the shared radio frequency spectrum band, in accordance with the uplink grant. A starting subframe of the uplink transmission is based at least in part on the LBT procedure and is within the transmission window.

Abstract translation: 描述了用于无线通信的技术。 一种方法包括从网络接入设备接收要在共享无线电频谱频带的信道上传输的上行链路许可。 上行链路授权指示具有多个子帧的持续时间的多个子帧和传输窗口。 该方法还包括至少部分地基于听说前讲话（LBT）过程并根据上行链路许可来竞争对共享无线电频谱频带的信道的接入; 以及根据所述上行链路授权在所述共享无线电频谱频带的信道上发送上行链路传输。 上行链路传输的起始子帧至少部分基于LBT过程并且在传输窗口内。