公开(公告)号：US20190215859A1

公开(公告)日：2019-07-11

申请号：US16355105

申请日：2019-03-15

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic ,  Hao Xu ,  Juan Montojo

IPC: H04W72/12 ,  H04L27/26 ,  H04L5/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. Different transmission time interval (TTI) durations may be supported and configured to coexist with one another. A set of TTIs with a relatively short duration may overlap in time with longer duration TTIs. Boundaries of TTIs with a relatively short duration may be configured to align with boundaries of relatively longer duration TTIs. For example, TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Two-symbol period TTIs may align with or be embedded within slot-duration TTIs, which, in turn, may align with or be embedded within a subframe. In some examples, one or more symbol periods of a subframe may be designated as a gap between two-symbol TTIs within the subframe, or such symbols may be merged with a two-symbol TTI within the subframe.

公开(公告)号：US10334633B2

公开(公告)日：2019-06-25

申请号：US15341753

申请日：2016-11-02

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Renqiu Wang ,  Xiao Feng Wang ,  Hao Xu ,  Wanshi Chen

IPC: H04W74/08 ,  H04B1/7143 ,  H04B1/713 ,  H04W72/04 ,  H04W4/70 ,  H04W4/06

Abstract: Methods, systems, and devices are described for wireless communication. Dedicated frequency resources of a physical random access channel (PRACH) may be designated for large and small frequency hops to facilitate the determination of timing offsets for PRACH transmissions. For instance, a frequency hopping pattern within the PRACH channel having a plurality of single tone transmission may include a first number of hops associated with a first frequency hopping distance (e.g., large frequency hops), and a second number of hops associated with a second frequency hopping distance (e.g., small frequency hops).

公开(公告)号：US10321447B2

公开(公告)日：2019-06-11

申请号：US15236947

申请日：2016-08-15

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Hao Xu

IPC: H04W72/04 ,  H04W76/28 ,  H04W4/70 ,  H04W52/02 ,  H04L5/00 ,  H04L1/18

Abstract: In eMTC, channels may be bundled, using repetitions in multiple subframes. SPS and DRX for eMTC may not accommodate such repetitions, because repetitions for a bundled channel may fall only partially within a DRX ON duration. An apparatus addresses this problem by determining a DRX ON duration, determining a set of subframes carrying a bundled M-PDCCH candidate and determining that the DRX ON duration at least partially overlaps with the set of subframes of the bundled M-PDCCH. The apparatus then refrains from decoding the first bundled M-PDCCH candidate, decodes the first bundled M-PDCCH candidate, or extends the DRX ON duration to include the set of subframes entirely and decoding the first bundled M-PDCCH candidate carried in the set of subframes in the extended DRX ON duration. The apparatus may also determine DRX configuration parameters based on parameters of bundled channels, and handle invalid subframes for an SPS grant.

公开(公告)号：US10314037B2

公开(公告)日：2019-06-04

申请号：US15642104

申请日：2017-07-05

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Srinivas Yerramalli ,  Hao Xu ,  Jing Sun ,  Shimman Arvind Patel ,  Aamod Khandekar

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W76/27 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

公开(公告)号：US10313913B2

公开(公告)日：2019-06-04

申请号：US14273478

申请日：2014-05-08

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  Peter Gaal ,  Hao Xu ,  Miguel Griot ,  Wanshi Chen

IPC: H04W4/70 ,  H04W28/02 ,  H04W52/02 ,  H04W72/12 ,  H04W74/08 ,  H04W76/28 ,  H04W92/18

Abstract: Methods, systems, and/or devices are described for are provided for transmission overload control and/or supervision of wireless devices. Tools and techniques may be provided for resolving issues associated with numerous wireless devices connected to a base station. For example, a transmission cycle for an uplink channel may be identified where the transmission cycle is discontinuous. Scheduling request and or Random Access Channel messages may be transmitted from a wireless device based on the discontinuous transmission cycle. Tools and techniques are also provided that may involve supervision of numerous wireless devices. Supervision may, for example, involve keep-alive messages transmitted in accordance with a timer. The supervision may be based on determination of, and transmissions related to, a list or lists of connected wireless devices. In some cases, the wireless devices may be delay tolerant. The wireless devices may include UEs that may have long sleep cycles and/or machine-type communications (MTC) devices.

公开(公告)号：US10306632B2

公开(公告)日：2019-05-28

申请号：US14865640

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Srinivas Yerramalli ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Tao Luo ,  Hao Xu ,  Wanshi Chen ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04W16/14 ,  H04W40/24 ,  H04W74/08 ,  H04W88/02 ,  H04W88/08 ,  H04L1/00

Abstract: Techniques are described for wireless communication. A first method includes winning a contention for access to an unlicensed radio frequency spectrum band, and transmitting at least a portion of a channel usage beacon signal (CUBS) over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted in a number of frequency interlaces of the unlicensed radio frequency spectrum band. A second method includes winning a contention for access to an unlicensed radio frequency spectrum band; determining whether the contention is won within a threshold time before a next symbol period boundary; and transmitting at least a portion of a CUBS over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted during a preamble including a fractional period of a first symbol period. The at least portion of the CUBS may be based at least in part on the determining.

公开(公告)号：US10298378B2

公开(公告)日：2019-05-21

申请号：US15687745

申请日：2017-08-28

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Tao Luo

IPC: H04L5/16 ,  H04L5/14 ,  H04L5/00 ,  H04W72/04 ,  H04W72/10

Abstract: Half-duplex (HD) operations enable low cost implementations of LTE terminals. Traditionally, HD operations may be linked to a particular frequency band which may not allow a mix of full-duplex (FD) and HD terminals in the same frequency band. Therefore, certain aspects of the present disclosure provide techniques for enabling coexistence, in a given frequency band, of HD and FD terminals, by introducing frequency bands designated for HD operation and overlapping existing frequency bands designated for FD operation.

公开(公告)号：US10284311B2

公开(公告)日：2019-05-07

申请号：US15040794

申请日：2016-02-10

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Renqiu Wang ,  Peter Gaal ,  Wanshi Chen ,  Yongbin Wei ,  Madhavan Srinivasan Vajapeyam ,  Valentin Alexandru Gheorghiu

IPC: H04B17/318 ,  H04B17/336 ,  H04W4/70 ,  H04L5/00

Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes determining an additional set of resources to use to enhance measurement of one or more metrics indicative of channel conditions based on measurement of reference signals during a measurement procedure, wherein the additional set of resources are in addition to a defined set of resources used to measure the one or more metrics and performing the measurement procedure based at least on the reference signals, the additional set of resources, and one or more measurement parameters.

公开(公告)号：US10257796B2

公开(公告)日：2019-04-09

申请号：US15789889

申请日：2017-10-20

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Tao Luo ,  Naga Bhushan ,  Peter Gaal ,  Hao Xu

IPC: H04W56/00 ,  H04W16/14 ,  H04W72/04 ,  H04W84/04 ,  H04W88/08 ,  H04W28/08 ,  H04W74/08

Abstract: Methods, systems, and devices are described for wireless communication. One method may include receiving, at a first base station, at least one clear channel assessment (CCA)-exempt transmission (CET) indicating timing information of at least a second base station over a shared spectrum. A timing of the first base station may be adjusted based on the received timing information of the second base station. Another method of wireless communication may include identifying a CCA slot assigned to a first base station for a frame, which may be associated with time synchronization, of a shared spectrum. A CCA may be performed at the identified CCA slot for the frame. When the CCA is successful, a first timing information of the first base station may be selectively transmitted during the frame. When the CCA is unsuccessful, a second timing information of a second base station may be listened for during the frame.

公开(公告)号：US10237105B2

公开(公告)日：2019-03-19

申请号：US15850821

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wei Zeng ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Renqiu Wang

IPC: H04W52/14 ,  H04L27/26 ,  H04J13/00 ,  H04L1/06 ,  H04L5/00 ,  H04J11/00 ,  H04B7/06 ,  H04L5/14 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communication are described that support multiplexing uplink transmissions with transmit diversity with a single carrier waveform. Two or more UEs may be configured to use space time block codes (STBC) for transmissions using multiple uplink antennas. A first UE may be configured to use a first STBC for a first uplink transmission. An orthogonal cover code (OCC), such as a Walsh code, may be applied to the first STBC to generate a second STBC, and a second UE may use the second STBC for a second uplink transmission. The first UE and the second UE may concurrently transmit the first uplink transmission and the second uplink transmission. The first STBC and the second STBC may be applied across multiple OFDM symbols, or may be applied within an OFDM symbol on a modulated symbol level.