公开(公告)号：US09986526B2

公开(公告)日：2018-05-29

申请号：US15063159

申请日：2016-03-07

Applicant: QUALCOMM Incorporated

Inventor： Aamod Dinkar Khandekar ,  Ravi Palanki ,  Ashwin Sampath ,  Naga Bhushan ,  Raja Sekhar Bachu

IPC: H04W64/00 ,  H04B7/15 ,  G01S5/00 ,  G01S5/02

CPC classification number: H04W64/003 ,  G01S5/0063 ,  G01S5/0081 ,  G01S5/0236 ,  G01S5/0273 ,  H04B7/15

Abstract: Systems and methodologies are described that facilitate transmitting positioning reference signals (PRS) differently for passive distributed elements. PRSs for passive distributed elements can be transmitted over disparate resources than those utilized for PRSs at a related access point, using different symbol sequences, and/or the like. In this regard, wireless devices can differentiate between PRSs from access points and those from passive distributed elements, which can mitigate confusion for processes involving such RSs, such as position determining. Alternatively, passive distributed elements can refrain from transmitting PRSs, and a corresponding access point can indicate to wireless devices to only determine positioning based on PRSs. Thus, the wireless devices can utilize the PRSs transmitted from the access point (and not other reference signals transmitted from the passive distributed element) to determine a position.

公开(公告)号：US09980271B2

公开(公告)日：2018-05-22

申请号：US14866768

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Joseph Binamira Soriaga ,  Jing Jiang ,  Krishna Kiran Mukkavilli ,  Naga Bhushan ,  Tingfang Ji ,  John Edward Smee

IPC: H04W72/08 ,  H04W16/28 ,  H04W72/04 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04W72/082 ,  H04B7/0421 ,  H04B7/0602 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0671 ,  H04W16/28 ,  H04W72/0413 ,  H04W72/042

Abstract: Systems, devices, and methods associated with interference aware sounding reference signals are provided. A method for wireless communication includes receiving, at a wireless communication device in communication with a first base station, an interfering signal from a second base station (or other base stations); determining, at the wireless communication device, a spatial direction of the interfering signal; and transmitting, with the wireless communication device, a signal to the first base station based on the spatial direction of the interfering signal. Another method of wireless communication includes receiving, at a first base station, a signal from a wireless communication device, the signal based on a spatial direction of an interfering signal received by the wireless communication device from a second base station (or other base stations); transmitting, with the first base station, a downlink communication to the wireless communication device, the downlink communication beamformed in the spatial direction based on the signal received from the wireless communication device.

公开(公告)号：US09979580B2

公开(公告)日：2018-05-22

申请号：US15588007

申请日：2017-05-05

Applicant: QUALCOMM Incorporated

Inventor： Fuyun Ling ,  J. Rodney Walton ,  Mark Wallace ,  Ivan Jesus Fernandez Corbaton ,  Naga Bhushan

IPC: H04B7/02 ,  H04L27/26 ,  H04B7/0413

CPC classification number: H04L27/2649 ,  H04B7/0413 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L5/0023 ,  H04L5/0044 ,  H04L25/03171 ,  H04L27/2601 ,  H04L27/38

Abstract: Coding techniques for a (e.g., OFDM) communication system capable of transmitting data on a number of “transmission channels” at different information bit rates based on the channels' achieved SNR. A base code is used in combination with common or variable puncturing to achieve different coding rates required by the transmission channels. The data (i.e., information bits) for a data transmission is encoded with the base code, and the coded bits for each channel (or group of channels with the similar transmission capabilities) are punctured to achieve the required coding rate. The coded bits may be interleaved (e.g., to combat fading and remove correlation between coded bits in each modulation symbol) prior to puncturing. The unpunctured coded bits are grouped into non-binary symbols and mapped to modulation symbols (e.g., using Gray mapping). The modulation symbol may be “pre-conditioned” and prior to transmission.

公开(公告)号：US09967752B2

公开(公告)日：2018-05-08

申请号：US14454400

申请日：2014-08-07

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Wanshi Chen ,  Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Srinivas Yerramalli ,  Tingfang Ji ,  Peter Gaal

IPC: H04W72/04 ,  H04W16/14 ,  H04L5/00 ,  H04L27/00 ,  H04B1/713 ,  H04W36/22

CPC classification number: H04W16/14 ,  H04B1/713 ,  H04L5/001 ,  H04L5/0012 ,  H04L5/0041 ,  H04L27/0006 ,  H04W36/22

Abstract: Methods, systems, and apparatuses are described for wireless communications, in which transmission of common information to two or more receivers over unlicensed spectrum may be provided. The common information may be transmitted over a number (e.g., a set) of different carrier frequencies of the unlicensed spectrum. A staggering pattern may be employed to transmit all or a part of the common information across each of the carrier frequencies in the set of carrier frequencies. The detection of the information on one of the carrier frequencies may provide information that may be used to derive the staggering pattern. The duration of the common information transmission on each of the carrier frequencies may be selected such that a clear channel assessment (CCA) to determine availability of the unlicensed spectrum is not required.

公开(公告)号：US09949315B2

公开(公告)日：2018-04-17

申请号：US14553789

申请日：2014-11-25

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Wanshi Chen ,  Naga Bhushan ,  Peter Gaal ,  Kiran Kumar Somasundaram ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi ,  Hao Xu ,  Tingfang Ji

IPC: H04W4/00 ,  H04W76/04 ,  H04W16/14 ,  H04W74/08 ,  H04W72/04 ,  H04W36/22

CPC classification number: H04W76/28 ,  H04W16/14 ,  H04W36/22 ,  H04W72/0426 ,  H04W74/08

Abstract: Techniques are described for wireless communication. One method includes monitoring, by a first base station of a first operator, for clear channel assessment (CCA) exempt transmission (CET) timing information of a second base station of a second operator; identifying transmission timings of CETs of the second base station of the second operator based at least in part on the monitoring; and discontinuing transmissions of the first base station of the first operator during the transmission timings of the CETs of the second base station of the second operator. Transmissions of the second base station of the second operator may be asynchronous to transmissions of the first base station of the first operator.

公开(公告)号：US09936519B2

公开(公告)日：2018-04-03

申请号：US14943796

申请日：2015-11-17

Applicant: QUALCOMM Incorporated

Inventor： Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Naga Bhushan ,  Joseph Binamira Soriaga ,  Peter Gaal ,  John Edward Smee ,  Jing Jiang

IPC: H04J3/00 ,  H04W72/12 ,  H04L5/14 ,  H04L5/00 ,  H04L1/00 ,  H04W76/00 ,  H04W72/04

CPC classification number: H04W72/1289 ,  H04L1/00 ,  H04L1/1671 ,  H04L1/1854 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/1469 ,  H04W72/0446 ,  H04W76/00

Abstract: Aspects of the present disclosure provide a self-contained subframe structure for time division duplex (TDD) carriers. Information transmitted on a TDD carrier may be grouped into subframes, and each subframe can provide communications in both directions (e.g., uplink and downlink) to enable such communications without needing further information in another subframe. In one aspect of the disclosure, a single subframe may include scheduling information, data transmission corresponding to the scheduling information, and acknowledgment packets corresponding to the data transmission. Furthermore, the subframe may additionally include a header and/or a trailer to provide certain bi-directional communications functions.

公开(公告)号：US09924509B2

公开(公告)日：2018-03-20

申请号：US14494779

申请日：2014-09-24

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Tingfang Ji ,  Durga Prasad Malladi ,  Yongbin Wei ,  Naga Bhushan ,  Aleksandar Damnjanovic ,  Tao Luo

IPC: H04W72/04 ,  H04W28/18 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L5/003 ,  H04W28/18

Abstract: Certain aspects of the present disclosure relate to techniques for configuring an adaptive frame structure for wireless communications systems using unlicensed radio frequency spectrum. A base station (BS) may determine whether another device is transmitting on a channel in the unlicensed radio frequency spectrum or one or more other network conditions pertaining to the channel, determine a frame structure from a plurality of frame structures used for data communications based at least in part on the one or more network conditions, wherein each of the plurality of frame structures has a different frame duration, and communicate with a user equipment (UE) using the determined frame structure. A UE may determine a frame structure from a plurality of frame structures used for data communications, wherein each of the plurality of frame structures has a different frame duration, and communicate with a BS using the determined frame structure.

公开(公告)号：US20180070306A1

公开(公告)日：2018-03-08

申请号：US15805634

申请日：2017-11-07

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Tingfang Ji ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Krishna Kiran Mukkavilli ,  Peter Gaal ,  Gavin Bernard Horn ,  Alexei Yurievitch Gorokhov ,  Naga Bhushan ,  Michael Alexander Howard ,  Joseph Patrick Burke ,  Rotem Cooper

IPC: H04W52/02 ,  H04W28/02 ,  H04W52/24 ,  H04W52/26

CPC classification number: H04W52/0212 ,  H04W28/0221 ,  H04W52/0219 ,  H04W52/0229 ,  H04W52/0261 ,  H04W52/241 ,  H04W52/243 ,  H04W52/262 ,  H04W52/265 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/24

Abstract: Systems, methods, apparatuses, and computer-readable storage media for managing power consumption of a mobile device are disclosed. The systems, method, apparatus, and computer-readable storage medium may cause the base station to identify an energy metric associated with a mobile device, and to configure the transmission between the base station and the mobile device based at least in part on the energy metric. The configuration of the transmission may reduce the power consumption of the mobile device for processing the transmission.

公开(公告)号：US09883404B2

公开(公告)日：2018-01-30

申请号：US14096686

申请日：2013-12-04

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Naga Bhushan ,  Tao Luo ,  Yongbin Wei

IPC: H04W16/14 ,  H04W74/08 ,  H04W72/12 ,  H04W28/08 ,  H04L5/00 ,  H04L27/00 ,  H04L5/14

CPC classification number: H04W16/14 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0092 ,  H04L5/14 ,  H04L27/0006 ,  H04W28/08 ,  H04W72/1231 ,  H04W72/1278 ,  H04W74/0808

Abstract: Methods, systems, and apparatuses are described for wireless communications. In one method, an uplink grant may be received over a licensed spectrum. A clear channel assessment (CCA) may be performed in response to the uplink grant to determine availability of an unlicensed spectrum. The CCA may be performed prior to a transmission associated with the uplink grant. In another method, scheduling information may be received over a licensed spectrum. An uplink grant may be transmitted over the licensed spectrum. The uplink grant may be based at least in part on the scheduling information. The uplink grant may be configured to trigger a CCA to determine availability of an unlicensed spectrum prior to a transmission associated with the uplink grant.

公开(公告)号：US09867055B2

公开(公告)日：2018-01-09

申请号：US14685051

申请日：2015-04-13

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Kiran Kumar Somasundaram ,  Wanshi Chen ,  Peter Gaal ,  Tao Luo ,  Hao Xu

IPC: H04L1/00 ,  H04W16/14 ,  H04W74/08 ,  H04J3/16 ,  H04W72/04

CPC classification number: H04W16/14 ,  H04J3/1694 ,  H04W72/044 ,  H04W74/08

Abstract: Techniques are described for wireless communication. One method includes identifying, by a first transmitter, a first contention access protocol timing for accessing an unlicensed radio frequency spectrum band, and aligning a second contention access protocol timing with the first contention access protocol timing, the second contention access protocol timing being used by the first transmitter for accessing the unlicensed radio frequency spectrum band.