公开(公告)号：US09673885B2

公开(公告)日：2017-06-06

申请号：US14717673

申请日：2015-05-20

Applicant: QUALCOMM Incorporated

Inventor： Shreeshankar Ravishankar Bodas ,  Hua Wang ,  Junyi Li

IPC: H04B7/155 ,  H04W40/24 ,  H04W88/04 ,  H04W76/02 ,  H04B17/309 ,  H04L12/26 ,  H04W84/04

CPC classification number: H04B7/15507 ,  H04B17/309 ,  H04L43/0882 ,  H04L43/12 ,  H04W40/08 ,  H04W40/22 ,  H04W40/244 ,  H04W40/246 ,  H04W76/14 ,  H04W84/047 ,  H04W88/04

Abstract: Techniques are described for wireless communication. One method includes estimating a pathloss from each of a plurality of relay candidates to a first communication device to generate a first capacity estimate for the first communication device for each of the plurality of relay candidates; receiving at the first communication device, from a second communication device, a second capacity estimate for the second communication device for each of the plurality of relay candidates; and selecting a relay from the plurality of relay candidates for relaying communications between the first communication device and the second communication device based at least in part on each first capacity estimate for the first communication device and each second capacity estimate for the second communication device.

公开(公告)号：US20170156130A1

公开(公告)日：2017-06-01

申请号：US14954494

申请日：2015-11-30

Applicant: QUALCOMM Incorporated

Inventor： Ying Wang ,  Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li ,  Thomas Richardson

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/04 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L67/104 ,  H04L67/12 ,  H04W72/1252 ,  H04W72/1263

Abstract: A method, a computer program product, and an apparatus are provided. In one configuration, the apparatus transmits a first broadcast signal including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus transmits a second broadcast signal in the unicast resource. In another configuration, the apparatus, which is a first wireless device, receives a first broadcast signal from a second wireless device including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus receives a first scheduling signal from the second wireless device in a scheduling resource. The first scheduling signal is for indicating a second intention to use the unicast resource for transmitting a second broadcast signal. Furthermore, the apparatus refrains from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal.

公开(公告)号：US20170142235A1

公开(公告)日：2017-05-18

申请号：US14939721

申请日：2015-11-12

Applicant: QUALCOMM Incorporated

Inventor： Lei Zhang ,  Chong Li ,  Xinzhou Wu ,  Junyi Li

IPC: H04L29/06 ,  H04W72/04 ,  H04L12/741

CPC classification number: H04L69/22 ,  H04L5/001 ,  H04L5/0053 ,  H04L45/74 ,  H04W72/0446 ,  H04W74/0816

Abstract: Methods, systems, and devices for wireless communication are described. A base station may perform a clear channel assessment (CCA) procedure on a channel that includes multiple sub-bands of a radio frequency spectrum band. The base station may determine that the channel is available based on the CCA and transmit a special header in the channel. In some examples, the special header may include multiple transmission time intervals (TTIs), where each TTI may include a header packet in each sub-band of the radio frequency spectrum band. In some cases, the header packet may include a clear to send (CTS)-to-self frame structure. The base station may transmit a first TTI across each of the sub-bands at a first power level, and transmit additional TTIs across the sub-bands at a different power level. Additional header packets may be transmitted at the boundaries of subsequent subframes.

公开(公告)号：US09638783B2

公开(公告)日：2017-05-02

申请号：US14105087

申请日：2013-12-12

Applicant: QUALCOMM Incorporated

Inventor： Georg Karl Hampel ,  Vincent D. Park ,  Jin-Der Wang ,  Junyi Li

IPC: G01S3/02 ,  G01S1/02 ,  H04W4/02 ,  H04W64/00 ,  H04W76/02

CPC classification number: G01S1/02 ,  H04W4/02 ,  H04W64/00 ,  H04W76/14

Abstract: Methods, systems, and devices are described for peer-to-peer or device-to-device location services. Mobile devices with a known location (referred to as landmarks) may broadcast their location information and/or a reference signal for other mobile devices (referred to as targets). Landmarks may determine their location through GPS or other location determining means. Targets may have limited or no connection to location determining services, and they may use broadcast information from landmarks, without a request, to determine the targets' location. The targets may determine absolute and/or relative locations. Once a target device determines its location it may assume a role of a landmark to provide broadcast location information to other devices.

公开(公告)号：US20170093530A1

公开(公告)日：2017-03-30

申请号：US14864574

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Shrinivas Kudekar ,  Xinzhou Wu ,  Junyi Li ,  Arik Gubeskys ,  Yehonatan Dallal

IPC: H04L1/06 ,  H04W72/12 ,  H04B7/08 ,  H04L5/00

CPC classification number: H04L1/0668 ,  H04B7/0854 ,  H04B17/345 ,  H04L5/0053 ,  H04L25/0224 ,  H04L25/03866 ,  H04W72/1263

Abstract: A wireless local area network (WLAN) may utilize an enhanced header for LTE-CW transmissions to increase utilization of the shared spectrum. In one example, a first device may generate a header that is identifiable to other devices using a shared spectrum, scramble, in the time domain, long training symbols according to a scrambling code that is specific to the first device, and transmit an enhanced header that includes the generated header and the scrambled long training symbols. The first device may also introduce a data region following the long training symbols to the enhanced header to create an enhanced packet. A second device may receive the enhanced packet and descramble the long training symbols based at least in part on the scrambling code that is specific to the first device to determine a channel estimate for the communication channel between the first device and the second device.

公开(公告)号：US09609461B2

公开(公告)日：2017-03-28

申请号：US14107221

申请日：2013-12-16

Applicant: QUALCOMM Incorporated

Inventor： Feng Ge ,  Junyi Li ,  Vincent Douglas Park

IPC: H04W4/00 ,  H04W8/00 ,  H04W76/02 ,  H04L29/08 ,  H04W72/04 ,  H04W72/02 ,  H04W88/04 ,  H04W48/20

CPC classification number: H04W4/005 ,  H04L67/12 ,  H04W4/70 ,  H04W8/005 ,  H04W48/20 ,  H04W72/02 ,  H04W72/0453 ,  H04W76/10 ,  H04W88/04

Abstract: Methods, systems, and devices are described for improving uplink communications of machine type communication (MTC) devices. In some embodiments, an MTC device may perform a discovery operation on a first narrow frequency band, establish a first communication link with a discovered relay device on a second narrow frequency band, and transmit MTC data on the second narrow frequency band to the discovered relay device to be relayed to a third device on a second communication link on a broad frequency band. In another embodiment, a first device may participate in a discovery operation with a second device. The first device may establish a communication link with the second device on a first narrow frequency band and receive data from the second device on a second narrow frequency band. The first device may relay the data to a third device over a second communication link on a broad frequency band.

公开(公告)号：US20170086194A1

公开(公告)日：2017-03-23

申请号：US14861819

申请日：2015-09-22

Applicant: QUALCOMM Incorporated

Inventor： Saurabha Rangrao Tavildar ,  Junyi Li ,  Jay Rodney Walton ,  Santosh Paul Abraham

IPC: H04W72/04 ,  H04W76/02 ,  H04L29/08

CPC classification number: H04W72/0446 ,  H04L67/104 ,  H04W16/14 ,  H04W72/0453 ,  H04W74/0808 ,  H04W76/14 ,  H04W84/12

Abstract: Methods, systems, and devices are described for direct device-to-device (D2D) communications in a subframe on a channel in an unlicensed radio frequency spectrum band. A user equipment (UE) may perform a listen-before-talk (LBT) procedure on the channel in the unlicensed radio frequency spectrum band. The UE may identify a time period between a completion of the LBT procedure and a boundary of a second subframe. The UE may transmit a Wi-Fi preamble and a variable length message on the channel during the identified timer period. The variable length message may include a duration that is time aligned with the boundary of the second subframe.

公开(公告)号：US20170070967A1

公开(公告)日：2017-03-09

申请号：US15045477

申请日：2016-02-17

Applicant: QUALCOMM Incorporated

Inventor： Xiao Feng Wang ,  Junyi Li

IPC: H04W56/00

CPC classification number: H04W56/0005 ,  H04W48/10 ,  H04W88/10

Abstract: Methods, systems, devices, and apparatuses are described for radio access technology (RAT) detection and identification. A user equipment (UE) may decode a multi-RAT primary synchronization signal (PSS). The multi-RAT PSS may be common among a plurality of RATs. The UE may decode, based on the decoded multi-RAT PSS, a secondary synchronization signal (SSS). The UE may identify, based on the decoded SSS, a RAT associated with the multi-RAT PSS and the SSS.

Abstract translation: 描述了用于无线电接入技术（RAT）检测和识别的方法，系统，设备和装置。 用户设备（UE）可以解码多RAT主同步信号（PSS）。 多RAT PSS在多个RAT中可能是共同的。 UE可以基于解码的多RAT PSS解码辅同步信号（SSS）。 UE可以基于解码的SSS识别与多RAT PSS和SSS相关联的RAT。

公开(公告)号：US20170064702A1

公开(公告)日：2017-03-02

申请号：US14842685

申请日：2015-09-01

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Assaf Touboul ,  Xinzhou Wu ,  Arthur Gubeskys

IPC: H04W72/04 ,  H04W28/26

CPC classification number: H04W72/0446 ,  H04W16/14 ,  H04W74/0816

Abstract: A wireless device may identify a first subband in an unlicensed radio frequency spectrum band used to communicate control traffic. The wireless device may identify a second subband in the unlicensed radio frequency spectrum band used to communicate data traffic. The first subband and the second subband may be different. The wireless device may reserve the first subband for a first duration of time for a plurality of wireless devices. The reservation may be based at least in part on an enhanced self-clear-to-send (self-CTS) transmitted over the first subband.

Abstract translation: 无线设备可以识别用于传达控制业务的非许可射频频带中的第一子带。 无线设备可以识别用于传送数据业务的未许可的射频频带中的第二子带。 第一子带和第二子带可以不同。 无线设备可以为多个无线设备在第一持续时间内预留第一子带。 该保留可以至少部分地基于通过第一子带传输的增强的自清除发送（自CTS）。

公开(公告)号：US09577755B2

公开(公告)日：2017-02-21

申请号：US15164108

申请日：2016-05-25

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Jovicic ,  Junyi Li ,  Thomas Joseph Richardson

IPC: H04B10/116 ,  H04B10/50 ,  H04B10/516 ,  H04L12/66 ,  H04L5/00 ,  H04B10/11 ,  H04B3/54 ,  H04B10/079 ,  H04B3/46 ,  H04B10/564 ,  H04B10/114

CPC classification number: H04B10/116 ,  H04B3/46 ,  H04B3/542 ,  H04B10/07953 ,  H04B10/11 ,  H04B10/1143 ,  H04B10/1149 ,  H04B10/502 ,  H04B10/516 ,  H04B10/564 ,  H04L5/0057 ,  H04L12/66

Abstract: A hybrid communications system implements different communication technologies to communicate data and information for particular communications directions in different portions of the system. Power line communications (PLC) signaling is used to deliver data and information from a gateway device to a light access point. Visible light communications (VLC) signaling is used to communicate data and information from the light access point to a user equipment (UE) device. Wireless radio signaling, wireless infrared (IR) signaling, or a combination of wireless IR signaling and PLC signaling is used to communicate data/information from the UE device to the gateway device. To efficiently control the VLC communications channel between the light access point and UE device, the UE device measures the VLC channel, e.g., calculating SNRs on a per VLC tone basis, and communicating VLC channel quality feedback information to the gateway device, which is forwarded to the light access point.

Abstract translation: 混合通信系统实现不同的通信技术以在系统的不同部分中传送特定通信方向的数据和信息。 电力线通信（PLC）信令用于将数据和信息从网关设备传送到光接入点。 可见光通信（VLC）信令用于将来自光接入点的数据和信息传送到用户设备（UE）设备。 使用无线无线电信令，无线红外（IR）信令或无线IR信令和PLC信令的组合来将数据/信息从UE设备传送到网关设备。 为了有效地控制光接入点和UE设备之间的VLC通信信道，UE设备测量VLC信道，例如，以VLC音调为基础计算SNR，以及向转发的网关设备传送VLC信道质量反馈信息 到光接入点。