公开(公告)号：US10368346B2

公开(公告)日：2019-07-30

申请号：US15086655

申请日：2016-03-31

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Naga Bhushan ,  Jay Kumar Sundararajan

IPC: H04W72/04 ,  H04L5/14 ,  H04B7/0452 ,  H04L5/00

Abstract: Various aspects provide for receiving signaling including information configured to indicate whether to adjust a structure of a time-division duplex (TDD) subframe. Such adjusting may include adjusting a time or subcarrier allocated for a control channel, data, and/or a reference signal, such as a user equipment (UE)-specific reference signal (UERS). The UERS may be time-aligned with a demodulation reference signal (DMRS) of another TDD subframe. The UERS may be utilized for inter-link multi-user multiple-input multiple-output (MU-MIMO) when the UERS is orthogonal to the DMRS. Various other aspects provide for communicating one or more pilot or null tones in a data portion of a first TDD subframe. The one or more pilot or null tones may be used to capture interference from a second TDD subframe communicated by another apparatus. The first TDD subframe may be communicated at least partially concurrent with the second TDD subframe.

公开(公告)号：US10356807B2

公开(公告)日：2019-07-16

申请号：US14791835

申请日：2015-07-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram ,  Tao Luo ,  Onkar Jayant Dabeer ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Anastasios Stamoulis ,  Hao Xu ,  Xiaoxia Zhang

IPC: H04W72/12 ,  H04B7/08 ,  H04L5/00 ,  H04L29/08 ,  H04W52/54 ,  H04W74/08 ,  H04W16/14 ,  H04W76/11

Abstract: Techniques are described for wireless communication. A first method may include inserting, in a first transmission using a first radio access technology (RAT), a channel occupancy identifier for a second transmission using a second RAT. The first method may also include transmitting the first transmission having the channel occupancy identifier over an unlicensed radio frequency spectrum band. A second method may include receiving, at a receiver operated using a first RAT, a channel occupancy identifier for a transmission using a second RAT. The channel occupancy identifier may be received over an unlicensed radio frequency spectrum band. The second method may also include decoding the channel occupancy identifier to identify a backoff period, and refraining from accessing the unlicensed radio frequency spectrum band using the first RAT based at least in part on the identified backoff period.

公开(公告)号：US10342012B2

公开(公告)日：2019-07-02

申请号：US14940546

申请日：2015-11-13

Applicant: QUALCOMM Incorporated

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

IPC: H04J3/00 ,  H04W72/04 ,  H04L5/14 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00

Abstract: Aspects of the present disclosure provide a subframe structure for time division duplex (TDD) carriers that can be entirely self-contained. That is, information transmitted on a TDD carrier may be grouped into subframes, where each subframe provides communication in both directions (e.g., uplink and downlink) in a suitable fashion to enable such communication without needing any further information in another subframe. For example, a single subframe may include scheduling information, data information corresponding to the scheduling information, and acknowledgment information corresponding to the data information.

公开(公告)号：US10313160B2

公开(公告)日：2019-06-04

申请号：US15984241

申请日：2018-05-18

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04L12/801

Abstract: The disclosure relates in some aspects to techniques for improved channel estimation. For example, a device can specify a pilot structure where pilot density differs over time. As another example, a device can indicate that a pilot from a prior transmission time interval (TTI) can be used for channel estimation. As another example, a device can employ frequency domain physical resource block (PRB) bundling with the bundling information signaling. As yet another example, a device can use an adjustable traffic-to-pilot ratio (TPR) for throughput optimization. Other aspects, embodiments, and features are also discussed and claimed.

公开(公告)号：US10305618B2

公开(公告)日：2019-05-28

申请号：US15011088

申请日：2016-01-29

Applicant: QUALCOMM Incorporated

Inventor： Ravi Palanki ,  Aamod Khandekar ,  Naga Bhushan

IPC: H04J11/00 ,  H04B1/7107 ,  H04L5/00 ,  H04W24/00 ,  H04W72/08 ,  H04B1/7097 ,  H04W48/08

Abstract: Techniques for transmitting and detecting for overhead channels and signals in a wireless network are described. In an aspect, a base station may blank (i.e., not transmit) at least one overhead transmission on certain resources in order to detect for the at least one overhead transmission of another base station. In one design, the base station may (i) send the overhead transmission(s) on a first subset of designated resources and (ii) blank the overhead transmission(s) on a second subset of the designated resources. The designated resources may be resources on which the overhead transmission(s) are sent by macro base stations. The base station may detect for the overhead transmission(s) from at least one other base station on the second subset of the designated resources. In another aspect, the base station may transmit the overhead transmission(s) on additional resources different from the designated resources.

公开(公告)号：US10277429B2

公开(公告)日：2019-04-30

申请号：US15625758

申请日：2017-06-16

Applicant: QUALCOMM Incorporated

Inventor： Haitong Sun ,  Naga Bhushan ,  Tingfang Ji

IPC: H04J13/00 ,  H04L25/03 ,  H04B7/0413

Abstract: Various aspects of the disclosure relate to a codebook design that defines phase rotation on one or more layers of a codebook. This codebook may be used, for example, for sparse code multiple access (SCMA) encoding. One feature pertains to a method of communication that includes receiving at least one input signal, and mapping each of the at least one input signal to a corresponding layer of a codebook, where the codebook defines phase rotation between the layers. The method may further include generating a coded signal for each of the at least one input signal on each corresponding layer based on the codebook, and generating an output signal based on each generated coded signal.

公开(公告)号：US10211953B2

公开(公告)日：2019-02-19

申请号：US15889436

申请日：2018-02-06

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Yi Huang ,  Wei Zeng ,  Renqiu Wang ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Naga Bhushan ,  Tingfang Ji

IPC: H04L1/06 ,  H04B7/06

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for implementing one or more antenna diversity schemes using communications systems operating according to 5G technologies. For example, techniques and apparatus may be provided for employing Alamouti encoding in a time domain for one or more portions of a plurality of modulated symbols associated with a first signal to be transmitted by a first antenna or a second signal to be transmitted by a second antenna to create a first plurality of encoded symbols or a second plurality of encoded symbols with tone-wise Alamouti in the frequency domain.

公开(公告)号：US10194466B2

公开(公告)日：2019-01-29

申请号：US14518715

申请日：2014-10-20

Applicant: QUALCOMM Incorporated

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

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

Abstract: Management of shared transmission resources is disclosed for multiple radio access networks (RANs) sharing access to a finite number of transmission slots. Multiple permutations of slot assignments are configured in which each competing network is assigned a specific slot in each permutation. The sequence of permutations provides a fair distribution of spectrum access by the competing networks, such that in each permutation of the permutation sequence, networks assigned to lower priority slots may be assigned to higher priority slots in later permutations.

公开(公告)号：US10154463B2

公开(公告)日：2018-12-11

申请号：US15444210

申请日：2017-02-27

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Juan Montojo ,  Naga Bhushan

IPC: H04B7/00 ,  H04W52/14 ,  H04W52/32 ,  H04W52/34 ,  H04W52/26 ,  H04W52/24 ,  H04W84/04

Abstract: The described apparatus and methods may include a controller configured to determine power required for at least one of a plurality of carriers, and generate at least one of a plurality of power control commands for at least one of the plurality of carriers based on the determination.

公开(公告)号：US10123219B2

公开(公告)日：2018-11-06

申请号：US14996902

申请日：2016-01-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04W24/02 ,  H04W72/04 ,  H04L1/00 ,  H04L1/18 ,  H04L5/14 ,  H04L5/00

Abstract: Techniques are described for wireless communication. A first method includes wirelessly communicating at a first device, with a second device, according to a first subframe structure; receiving a subframe truncation parameter from the second device; and terminating the first subframe structure based at least in part on the subframe truncation parameter. The first subframe structure includes a first periodic sequence of downlink transmission time intervals (TTIs) and uplink TTIs. A second method includes wirelessly communicating at a first device, with a second device, according to a parameterized self-contained subframe structure having an interlaced portion and a tail portion; and reducing a delay indicated by a nominal trigger-response delay parameter associated with a downlink TTI, to enable a response message corresponding to the downlink TTI to be transmitted during the tail portion and before termination of the subframe structure.