公开(公告)号：US20190028999A1

公开(公告)日：2019-01-24

申请号：US16043023

申请日：2018-07-23

Applicant: QUALCOMM Incorporated

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

IPC: H04W68/02 ,  H04W52/02

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for monitoring paging occasions. In one example, a mobile communication device defines a paging frame window (PFW) for a duration of time on a hop frequency or narrow band of frequencies indicated by a paging formula, and periodically wakes up to monitor the PFW for a page message. In another example, the mobile device receives a frame structure information at the start of a frame.

公开(公告)号：US20190020424A1

公开(公告)日：2019-01-17

申请号：US16001155

申请日：2018-06-06

Applicant: QUALCOMM Incorporated

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

IPC: H04B17/309 ,  H04W24/08 ,  H04W16/14 ,  H04B1/713

Abstract: The extension of NB-IoT and eMTC communications into the unlicensed spectrum introduces a number of problems associated with channel quality measurement and reporting. A method, apparatus, and computer readable medium are presented that provide a technique for channel quality measurement and reporting that addressed such problems. A UE apparatus measures a CQI measurement for each of a plurality of groups of hopping frequencies, wherein a set of hopping frequencies is grouped into the plurality of groups and reports a CQI for each of the plurality of groups. A base station may configure the UE for CQI reporting and may receive a CQI for each of a plurality of groups of hopping frequencies, wherein a set of hopping frequencies is grouped into the plurality of groups. The set of hopping frequencies comprise frequencies in an unlicensed spectrum.

公开(公告)号：US20180242277A1

公开(公告)日：2018-08-23

申请号：US15870824

申请日：2018-01-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W68/02 ,  H04W72/04 ,  H04L5/00 ,  H04W8/00

CPC classification number: H04W68/02 ,  H04L5/0048 ,  H04W8/005 ,  H04W16/14 ,  H04W28/04 ,  H04W72/0446

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：US20180027590A1

公开(公告)日：2018-01-25

申请号：US15630689

申请日：2017-06-22

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Wanshi CHEN ,  Jing SUN ,  Peter GAAL

IPC: H04W74/08 ,  H04W28/02 ,  H04W76/04 ,  H04W16/14

CPC classification number: H04W74/0808 ,  H04W16/14 ,  H04W28/0205 ,  H04W72/02 ,  H04W76/28

Abstract: Various aspects described herein relate to reducing transmission latency in unlicensed spectrum. These latency reduction techniques include enabling ultra low latency (ULL) traffic to gain fast channel access. These latency reduction techniques further include updating a size of a contention window for channel access. In addition, these latency reduction techniques include enhancing CPDCCH-based signaling to accommodate the ULL frame structure. Further, these latency reduction techniques include providing robust operation against bursty interference for ULL transmissions. Moreover, these techniques include managing DRX for ULL. Additionally, these latency reduction techniques include joint scheduling of different TTI durations. These latency reduction techniques further include updating SRS transmission opportunities. In addition, these latency reduction techniques include reducing latency associated with PRACH transmissions. Further, these latency reduction techniques include reducing ULL transmission delays by either ignoring or cancelling scheduled uplink (e.g., LTE) transmissions.

公开(公告)号：US20170347353A1

公开(公告)日：2017-11-30

申请号：US15596806

申请日：2017-05-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Chirag Sureshbhai PATEL ,  Tao LUO ,  Peter GAAL ,  Juan MONTOJO ,  Xiaoxia ZHANG

IPC: H04W72/04

CPC classification number: H04W72/0413 ,  H04L1/0031 ,  H04L1/1671 ,  H04L5/0053 ,  H04W72/0446

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for uplink control information (UCI) reporting. In certain aspects, a method includes receiving an indication of a number of symbols of a subframe available for uplink transmission. In certain aspects, the method further includes rate matching uplink control information (UCI) to the subframe based on the indication.

公开(公告)号：US20170324528A1

公开(公告)日：2017-11-09

申请号：US15479113

申请日：2017-04-04

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04L5/0048 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/14 ,  H04W56/00 ,  H04W72/0446

Abstract: An apparatus may use inactive uplink portions of a downlink CC to transmit SRS to an eNB. At times there may be a collision between the SRS transmission and uplink transmissions or downlink transmissions on another CC. The apparatus receives a carrier aggregation configuration for a first downlink CC and a second CC, determines to transmit an uplink transmission on the second CC or to receive a downlink transmission on the second CC, determines that the SRS would at least partially collide with the uplink transmission or the downlink transmission, and determines to adjust at least one of the uplink transmission, the SRS transmission, or reception of the downlink transmission based on the determination of the collision and an interruption time to transmit the SRS in the uplink portion of the first CC.

公开(公告)号：US20170034670A1

公开(公告)日：2017-02-02

申请号：US15222745

申请日：2016-07-28

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia ZHANG ,  Srinivas YERRAMALLI ,  Tao LUO

IPC: H04W4/06 ,  H04W74/08 ,  H04W16/14

CPC classification number: H04W4/06 ,  H04W16/14 ,  H04W56/001 ,  H04W72/005 ,  H04W74/006 ,  H04W74/08

Abstract: A method and apparatus for adjusting preamble transmissions to maintain synchronization with other network entities operating in an unlicensed spectrum during wireless communications are described. The method and apparatus include accessing, by a second node, a contention-based medium currently accessed by a first node transmitting a first burst of data. The method and apparatus further include transmitting, by the second node, a second burst of data over the accessed medium, the second burst of data having an associated preamble configured not to interfere with a joint transmission portion of the first burst of data. The first and second nodes may be enhanced-multimedia broadcast multicast service (eMBMS) nodes. Moreover, the joint transmission portion of the first burst of data may include transmission of one or more multicast-broadcast single-frequency network (MBSFN) subframes.

Abstract translation: 描述了一种用于在无线通信期间调整前导码传输以维持与在非许可频谱中操作的其他网络实体的同步的方法和装置。 该方法和装置包括由第二节点访问当前由发送第一数据突发的第一节点访问的基于竞争的媒体。 所述方法和装置还包括由所述第二节点通过所访问的介质发送第二数据突发，所述第二数据突发具有被配置为不干扰所述第一数据突发的联合传输部分的相关联的前导码。 第一和第二节点可以是增强型多媒体广播多播服务（eMBMS）节点。 此外，第一数据突发的联合传输部分可以包括一个或多个多播广播单频网络（MBSFN）子帧的传输。

公开(公告)号：US20170027002A1

公开(公告)日：2017-01-26

申请号：US15198713

申请日：2016-06-30

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Xiaoxia ZHANG ,  Tao LUO

IPC: H04W74/08 ,  H04W74/00

CPC classification number: H04W74/0816 ,  H04L5/001 ,  H04L5/0053 ,  H04W16/14 ,  H04W74/004 ,  H04W74/0808

Abstract: Uplink control information may not be transmitted if a CCA of the unlicensed SCC fails. Thus, the present disclosure provide a solution in which uplink control information for an unlicensed SCC may still be transmitted when a CCA of the unlicensed SCC fails. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus generates uplink control information. The apparatus also attempts to perform a CCA of a carrier for an uplink burst. In addition, the apparatus determines a failure of the CCA. In addition, the apparatus performs one of the following when it is determined that the CCA has failed: transmitting the PUCCH transmission on the carrier in a later subframe of the uplink burst, transmitting the PUCCH transmission on the carrier in a different uplink burst, or transmitting the PUCCH transmission on a different carrier.

Abstract translation: 如果未经许可的SCC的CCA发生故障，则不能发送上行链路控制信息。 因此，本公开提供了一种解决方案，其中当未许可SCC的CCA发生故障时，仍可以发送用于非许可SCC的上行链路控制信息。 在本公开的一方面，提供了一种方法，计算机可读介质和装置。 该装置产生上行链路控制信息。 该装置还尝试对上行链路突发执行载波的CCA。 另外，该装置确定CCA的故障。 此外，当确定CCA失败时，该设备执行以下之一：在上行链路突发的稍后子帧中在载波上发送PUCCH传输，在不同的上行链路突发中发送载波上的PUCCH传输，或 在不同的载波上发送PUCCH传输。

公开(公告)号：US20160345360A1

公开(公告)日：2016-11-24

申请号：US15153516

申请日：2016-05-12

Applicant: QUALCOMM Incorporated

Inventor： Marco PAPALEO ,  Srinivas YERRAMALLI ,  Aleksandar DAMNJANOVIC ,  Tao LUO ,  Peter GAAL ,  Durga Prasad MALLADI

IPC: H04W74/08 ,  H04W72/04

CPC classification number: H04W74/08 ,  H04W72/0446 ,  H04W72/1289 ,  H04W84/20

Abstract: In order to provide a generic access rule, the present disclosure proposes a new potential set of adaptivity rules for LBE based on LBT. The generic access rule of the present disclosure provides LTE-U and Wi-Fi coexistence and DL/UL coexistence in both LTE-U and Wi-Fi. The apparatus receives, from the first master device, a resource allocation for communicating with the second master device. The apparatus also determines a type of CCA procedure to perform before communicating with the second master device on an unlicensed channel. The apparatus further performs a CCA procedure to obtain a transmission opportunity based on the determining, the CCA procedure being one of an ICCA procedure or an ECCA procedure. In addition, the apparatus transmit data to the second master device in accordance with the resource allocation on the unlicensed channel when the transmission opportunity is obtained.

Abstract translation: 为了提供通用访问规则，本公开提出了一种基于LBT的LBE的新的潜在适应性规则集合。 本公开的通用访问规则在LTE-U和Wi-Fi中提供LTE-U和Wi-Fi共存以及DL / UL共存。 该设备从第一主设备接收用于与第二主设备进行通信的资源分配。 该设备还确定在与未授权信道上与第二主设备通信之前要执行的CCA过程的类型。 该装置进一步执行CCA程序以基于确定作为ICCA过程或ECCA过程之一的CCA过程来获得发送机会。 此外，当获得发送机会时，装置根据非许可信道上的资源分配向第二主设备发送数据。

公开(公告)号：US20160278118A1

公开(公告)日：2016-09-22

申请号：US15061953

申请日：2016-03-04

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Tao LUO ,  Wanshi CHEN

IPC: H04W72/14 ,  H04W72/12 ,  H04W24/08 ,  H04W72/04

CPC classification number: H04W72/14 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0094 ,  H04L5/06 ,  H04W16/14 ,  H04W24/08 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1268 ,  H04W72/1273 ,  H04W72/1294

Abstract: Channel availability is uncertain when employing an unlicensed carrier. In particular, it may be difficult to schedule grants in advance because of the uncertainty associated with future channels availability. Accordingly, scheduling UL and/or DL grants exclusively using self-scheduling or exclusively using cross-carrier scheduling for utilizing an unlicensed carrier may result in wasted communication opportunities. Aspects disclosed herein whereby an eNB may use licensed and unlicensed carriers to communicate downlink grants and uplink grants for an unlicensed carrier to a UE. In one aspect, the eNB may use an unlicensed carrier to communicate downlink grants for downlink communication on the unlicensed carrier, and may use a licensed carrier to communicate uplink grants for uplink communication on the unlicensed carrier.

Abstract translation: 使用无牌运营商时，渠道的可用性是不确定的。 特别是，由于与未来频道可用性有关的不确定性，可能难以提前安排拨款。 因此，专门使用自调度或排他地使用用于利用未许可的运营商的跨载波调度的调度UL和/或DL授权可能导致浪费的通信机会。 本文公开的方面，eNB可以使用许可和未许可的载体来向UE通知下行链路许可和用于非许可的载波的上行链路许可。 在一个方面，eNB可以使用未经许可的载波来传送用于未经许可的载波上的下行链路通信的下行链路许可，并且可以使用许可的载体来传送用于在未许可的载体上的上行链路通信的上行链路许可。