公开(公告)号：US20180249380A1

公开(公告)日：2018-08-30

申请号：US15883237

申请日：2018-01-30

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Tamer Kadous ,  Taesang Yoo

IPC: H04W28/26 ,  H04W8/24 ,  H04W28/12 ,  H04W72/04 ,  H04W16/14

Abstract: Wireless communications systems and methods related to sharing a spectrum using node-specific medium reservation signals are provided. A first wireless communication device a first configuration designated to the first wireless communication device. The first configuration indicates at least one waveform for representing reservation information. The first wireless communication device transmits a reservation signal to reserve a transmission opportunity (TXOP) in a shared spectrum. The reservation signal includes a first waveform representing corresponding first reservation information based on the first configuration. The first waveform is associated with a root sequence and a cyclic-shift value. The first reservation information indicates a transmit power level of the reservation signal. The first reservation information indicates an interference tolerance level of the first wireless communication device. The first reservation information indicates a reserved duration within the TXOP.

公开(公告)号：US10057921B2

公开(公告)日：2018-08-21

申请号：US15280660

申请日：2016-09-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Tao Luo

IPC: H04W4/00 ,  H04W72/14 ,  H04L5/00 ,  H04W72/04 ,  H04L1/18

CPC classification number: H04W72/14 ,  H04L1/1812 ,  H04L5/0055 ,  H04W72/042 ,  H04W72/0446

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. The apparatus may be a base station. The apparatus may transmit a first grant to a UE. The apparatus may determine whether an acknowledgment to the first grant is received. When the acknowledgment to the first grant fails to be received by the apparatus, the apparatus may transmit, to the UE, a second grant including information regarding the first grant. In another aspect, an apparatus may be a UE. The apparatus may receive a first grant. The first grant may include a first Mayday bit. The apparatus may receive a second grant. The second grant may include a TTI count corresponding to a number of unacknowledged TTIs. The second grant may further include a second Mayday bit. The apparatus may determine an acknowledgment based on the TTI count and the first and second Mayday bits.

公开(公告)号：US20180139018A1

公开(公告)日：2018-05-17

申请号：US15637555

申请日：2017-06-29

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Xiaoxia Zhang ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Juan Montejo

IPC: H04L5/00 ,  H04W8/00 ,  H04W48/16 ,  H04W28/18 ,  H04J3/06 ,  H04W40/24 ,  H04L29/08

CPC classification number: H04L5/0035 ,  H04J3/0602 ,  H04L5/0078 ,  H04L67/04 ,  H04W8/005 ,  H04W16/14 ,  H04W28/18 ,  H04W40/244 ,  H04W48/16 ,  H04W56/001 ,  H04W74/0808

Abstract: Network discovery and synchronization for new radio (NR) shared spectrum (NR-SS) is discussed for a wireless network having a super frame configuration on a shared spectrum shared between a plurality of network operators. A base station may obtain a discovery preamble from a plurality of network entities within the wireless network, wherein each of the plurality of network entities belongs to one or more of the plurality of network operators and shares the super frame configuration. The base station detects the timing of the super frame configuration using the discovery preamble and may then synchronize the base station to the super frame configuration according to the detected timing.

公开(公告)号：US20180124820A1

公开(公告)日：2018-05-03

申请号：US15801150

申请日：2017-11-01

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tamer Kadous ,  Juan Montojo ,  Peter Pui Lok Ang ,  Xiaoxia Zhang ,  Taesang Yoo ,  Ahmed Kamel Sadek ,  Sanaz Barghi ,  Akula Reddy ,  Andrei Dragos Radulescu ,  Junyi Li

IPC: H04W72/14 ,  H04L5/00 ,  H04W72/04 ,  H04W8/08 ,  H04W74/08

CPC classification number: H04W72/14 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/001 ,  H04L5/0048 ,  H04W8/08 ,  H04W72/0413 ,  H04W72/044 ,  H04W74/08 ,  H04W74/0816 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, using a first base station beam, a first message to a user equipment (UE). The first message may include a pre-grant communication and a plurality of downlink beam refinement reference signals (D-BRRSs). The base station may receive a second message from the UE in response to the first message. The second message may include a pre-grant acknowledgement and a plurality of uplink beam refinement reference signals (U-BRRSs). The base station may transmit, using a second base station beam, a third message to the UE. A width of the second base station beam may be less than a width of the first base station beam.

公开(公告)号：US20180077725A1

公开(公告)日：2018-03-15

申请号：US15677692

申请日：2017-08-15

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Xiaoxia Zhang ,  Siddhartha Mallik

IPC: H04W74/08 ,  H04W28/26 ,  H04W28/20

Abstract: Aspects of the disclosure relate to reserving resources in wireless communication systems, such as those employing listen before talk (LBT). The disclosed methods and apparatus employ a channel reservation preamble used in a sequence of burst or data packet transmissions. The preamble including a channel reservation indication is included in a first data packet transmitted from a first network node. The channel reservation indication is configured to indicate a transmission time reservation of channel resources covering the data packet containing the preamble, a second data packet to be received from a second network node responsive to the first data packet, and at least a portion of a third data packet transmitted from the first network node subsequent to the transmission of the second data packet. In this manner, over-reservation of channel resources is mitigated. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20180054830A1

公开(公告)日：2018-02-22

申请号：US15659604

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W72/12 ,  H04W76/04 ,  H04W24/08

Abstract: Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.

公开(公告)号：US20180035463A1

公开(公告)日：2018-02-01

申请号：US15649074

申请日：2017-07-13

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jing Sun ,  Anastasios Stamoulis ,  Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14

CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W72/0453 ,  H04W88/06

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) or base station communicating in an unlicensed radio frequency spectrum band may transmit a signal (e.g., a request-to-send (RTS) or clear-to-send (CTS) signal) in a licensed radio frequency spectrum band to decrease the likelihood that neighboring devices will transmit interfering communications. Specific resources may be designated in the licensed radio frequency spectrum band for transmitting these signals, and these resources may be associated with specific unlicensed channels. Signaling in the licensed radio frequency spectrum band may also carry an indication of the unlicensed channel being used or other information relevant to the unlicensed communication. The RTS/CTS signaling in licensed radio frequency spectrum band may be transmitted during a downlink transmit opportunity or an uplink transmit opportunity, or both. Different energy detection thresholds may apply to RTS/CTS signals in licensed and unlicensed spectrum.

公开(公告)号：US09883485B2

公开(公告)日：2018-01-30

申请号：US14973300

申请日：2015-12-17

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jun Wang ,  Taesang Yoo

IPC: H04W72/00 ,  H04L5/00 ,  H04W72/04 ,  H04W4/06

CPC classification number: H04W72/005 ,  H04L5/00 ,  H04L5/0048 ,  H04W4/06 ,  H04W72/0446 ,  H04W72/0453

Abstract: Methods, systems, and devices are described for evolved multimedia broadcast multicast service (eMBMS) utilizing enhanced component carriers (eCCs). A wireless system may send unicast data using resources allocated for multicast transmissions (e.g., eMBMS transmissions). The presence of unicast data in a transmission time interval (TTI) scheduled for multicast transmission may be indicated by a control region within the TTI. A UE may monitor the control region to identify the presence of unicast information. A TTI scheduled for multicast transmission may also include reference signals to aid in the demodulation of multicast or unicast data. In some cases, the reference signals may be front-loaded at the beginning or embedded within the TTI. The embedded reference signals may be configured based on the type of data carried by the TTI scheduled for multicast transmission, or by length of the cyclic prefix used by the TTI scheduled for multicast transmission.

公开(公告)号：US20180014298A1

公开(公告)日：2018-01-11

申请号：US15585027

申请日：2017-05-02

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W72/04 ,  H04L1/18 ,  H04W72/14 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L1/1614 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1854 ,  H04L1/1887 ,  H04L1/189 ,  H04L5/0055 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communication are described. A mobile device may be scheduled for resources of multiple transmission time intervals (TTIs) with a downlink control message; some or all of the multiple TTIs may be associated with different hybrid automatic repeat request (HARQ) processes. Each TTI may include data mapped to one transport block (TB), and each TB may be associated with a separate HARQ process. The downlink control message may include an indication of which HARQ processes are associated with resources of the multiple TTIs scheduled by the message. For example, the downlink control message may include a mapping (e.g., a bitmap) that indicates a relationship between each HARQ process and each TTI scheduled by the message. Feedback for TBs of some TTIs may differ, and an acknowledgment of receipt or successful decoding may depend on timing of TTIs in relation to a control message.

公开(公告)号：US20170310426A1

公开(公告)日：2017-10-26

申请号：US15485656

申请日：2017-04-12

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Xiaoxia Zhang ,  Taesang Yoo ,  Jing Sun ,  Juan Montojo

IPC: H04L1/18 ,  H04L1/00 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04L1/1812 ,  H04L1/0013 ,  H04L1/1664 ,  H04L1/1861 ,  H04L1/1893 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0055 ,  H04L5/0094 ,  H04L5/14 ,  H04W72/1289 ,  H04W74/0808

Abstract: A base station may provide both an uplink grant and a downlink grant in a same transmission time interval (TTI), and may provide an indication in the uplink grant that the TTI includes the downlink grant. A user equipment (UE) that receives the uplink grant may provide feedback using identified feedback resources in an uplink shared channel, and other uplink transmissions may be rate matched around the feedback resources in the uplink shared channel. A base station receiving the feedback may monitor the feedback resources to determine whether the downlink grant or one or more of the downlink transmissions were successfully received at the UE. A base station, in some examples, may monitor different sets of resources to determine whether certain of the uplink grant, downlink grant, downlink transmissions associated with the downlink grant, or any combinations thereof, have been successfully received at the UE.