公开(公告)号：US20180098341A1

公开(公告)日：2018-04-05

申请号：US15705175

申请日：2017-09-14

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Yi Huang ,  Peter Gaal ,  Tingfang Ji

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

Abstract: Wireless communication devices, such as a scheduled entity, are adapted to facilitate uplink transmissions on multiple physical uplink control channels (PUCCHs) of a regular burst period. According to one example, a scheduled entity may obtain a payload for an uplink transmission on a PUCCH. The scheduled entity may subsequently send the uplink transmission utilizing two or more physical uplink control channels (PUCCH) of a regular burst period, where each PUCCH is associated with a different frequency band of the regular burst period. According to one example, a scheduling entity may receive an uplink transmission, where the uplink transmission utilizes a first PUCCH of a regular burst period, and at least a second PUCCH of the regular burst period, each of the first and second PUCCHs being associated with respectively different frequency bands of the regular burst period. Other aspects, embodiments, and features are also included.

公开(公告)号：US20180098307A1

公开(公告)日：2018-04-05

申请号：US15663154

申请日：2017-07-28

Applicant: QUALCOMM Incorporated

Inventor： Yang Yang ,  Peter Pui Lok Ang ,  Wanshi Chen ,  Heechoon Lee ,  Jing Jiang ,  Tingfang Ji ,  Tao Luo

IPC: H04W72/04 ,  H04L25/02 ,  H04W76/04

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0094 ,  H04L25/024 ,  H04W72/0446 ,  H04W72/1289 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described. A method may include receiving a control transmission from a base station, identifying a control channel search space organized according to a nested structure, the control channel search space including a plurality of control channel candidates associated with one or more control channel elements (CCEs) and an aggregation level, and searching the received control transmission to identify a control channel for the UE using the plurality of control channel candidates. Another method may include determining whether to reorder resource element group (REG) indices for a received control channel transmission based, at least in part, on a transmission mode associated with the control channel transmission. Another method may include decoding a received control channel transmission, where the downlink control information (DCI) formats may be constrained to an integer multiple of a predetermined base number of bits N.

公开(公告)号：US09936498B2

公开(公告)日：2018-04-03

申请号：US14836740

申请日：2015-08-26

Applicant: QUALCOMM Incorporated

Inventor： Kambiz Azarian Yazdi ,  Tingfang Ji ,  Jing Jiang

IPC: H04W72/04 ,  H04L1/18 ,  H04L1/00 ,  H04W88/08 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L1/0018 ,  H04L1/0026 ,  H04L1/1812 ,  H04L1/1887 ,  H04L5/001 ,  H04L5/0094 ,  H04L5/0098 ,  H04W72/0453 ,  H04W88/08

Abstract: Systems and methods for communicating mission-critical (MiCri) data in a network including a base station and user equipment (UE) are provided. The methods may include receiving a request message requesting MiCri data, and transmitting the MiCri data during a transmission time interval (TTI) of a first carrier component or during a transmission time interval (TTI) of a second carrier component. In various aspects, the TTI of the first carrier component may be staggered in time with respect to the TTI of the second carrier component. In another aspect, the UE may pre-report interference pattern information for a nominal TTI for use in communication of MiCri data.

公开(公告)号：US20180069673A1

公开(公告)日：2018-03-08

申请号：US15811289

申请日：2017-11-13

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04B7/06

CPC classification number: H04L5/0048 ,  H04B7/0452 ,  H04B7/0617 ,  H04L5/0051

Abstract: Systems and techniques are disclosed to enhance the efficiency of available bandwidth between UEs and base stations. A UE transmits a sounding reference signal (SRS) to the base station. The base station characterizes the uplink channel based on the SRS received and, using reciprocity, applies the channel characterization for the downlink channel. As part of applying the channel information, the base station forms the beam to the UE based on the uplink channel information obtained from the SRS. The UE may include an array of antennas, each UE transmitting a different SRS that the base station receives and uses to characterize the downlink. Multiple UEs (or a single UE with multiple antennas) transmit SRS at the same time and frequency allocation (non-orthogonal), but with each sending its own unique SRS. Further, multiple UEs (or a single UE with multiple antennas) may send their SRS at unique time/frequency allocations (orthogonal).

公开(公告)号：US20180054334A1

公开(公告)日：2018-02-22

申请号：US15625758

申请日：2017-06-16

Applicant: QUALCOMM Incorporated

Inventor： Haitong Sun ,  Naga Bhushan ,  Tingfang Ji

IPC: H04L25/03

CPC classification number: H04L25/03929 ,  H04B7/0413 ,  H04J13/00 ,  H04J13/0003 ,  H04L25/03936 ,  H04L25/03942

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：US20180049173A1

公开(公告)日：2018-02-15

申请号：US15465498

申请日：2017-03-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W76/04 ,  H04L5/00

CPC classification number: H04W72/044 ,  H04L5/0048 ,  H04W72/0413 ,  H04W72/0446 ,  H04W76/28 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described for a data channel-referenced resource allocation for a control channel. In an implementation, a user equipment (UE) may identify, for a transmission time interval (TTI), a first uplink resource allocation to the UE of a first channel. The UE may determine, based at least in part on the first uplink resource allocation of the first channel, a second uplink resource allocation of a second channel to the UE. The UE may transmit, during the TTI, the first channel and the second channel.

公开(公告)号：US20180048349A1

公开(公告)日：2018-02-15

申请号：US15588431

申请日：2017-05-05

Applicant: QUALCOMM Incorporated

Inventor： Haitong Sun ,  Naga Bhushan ,  Tingfang Ji

IPC: H04B1/7075 ,  H04J13/00 ,  H04J13/10 ,  H04W72/04 ,  H04L1/00

CPC classification number: H04B1/7075 ,  H04B2201/698 ,  H04B2201/7073 ,  H04J13/0007 ,  H04J13/10 ,  H04J2013/0096 ,  H04L1/0042 ,  H04L1/0057 ,  H04L25/00 ,  H04W72/0466

Abstract: Disclosed are methods and apparatus used in wireless communications. The methods and apparatus establish a codebook for use in sparse code multiple access (SCMA) encoded communications, in particular. The SCMA codebook is configured to set the codebook for at least one layer (i.e., a user) to include a constellation of points having a first grouping of constellation points located at first radial distance from an origin in a complex plane and a second grouping of constellation points located at a second radial distance from the origin. This codebook arrangement provides increased gains at receivers by optimizing the constellation shape to improve the distance between constellation points (i.e., SCMA codebook performance), and in particular more robust performance when encountering amplitude and phase misalignment in uplink (UL) multiple access.

公开(公告)号：US20180035423A1

公开(公告)日：2018-02-01

申请号：US15458017

申请日：2017-03-13

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wei Zeng ,  Jing Jiang ,  Tingfang Ji

IPC: H04W72/04 ,  H04L1/00 ,  H04B17/336 ,  H04B7/0413 ,  H04L5/00

CPC classification number: H04W72/0413 ,  H04B7/0413 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0007 ,  H04L5/0021 ,  H04L5/0028 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0092 ,  H04L27/0008

Abstract: Methods, systems, and devices for wireless communication are described A user equipment (UE) and a base station may support switching from one waveform to another on uplink channels. For example, a UE and a base station may utilize both frequency division multiplexing (SC-FDM) waveform and an orthogonal frequency division multiplexing (OFDM) waveforms based on channel conditions and other factors. In some examples, a UE may switch for some uplink channels, and use a single waveform for other channels. For example, switching waveforms for channels that utilize frequency domain code division multiplexing (CDM) channel may interrupt the orthogonality of multiplexed transmissions. A UE may transition from one waveform to another either autonomously or based on an explicit indication from a base station. If a UE switches autonomously, it may send an indication of the transition to the serving base station.

公开(公告)号：US20180027577A1

公开(公告)日：2018-01-25

申请号：US15724119

申请日：2017-10-03

Applicant: QUALCOMM Incorporated

Inventor： Hua Wang ,  Junyi Li ,  Tingfang Ji ,  Naga Bhushan

IPC: H04W72/10 ,  H04W72/14 ,  H04W72/12 ,  H04W72/08 ,  H04W92/20 ,  H04W72/04

CPC classification number: H04W72/10 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1231 ,  H04W72/1242 ,  H04W72/1247 ,  H04W72/1268 ,  H04W72/1273 ,  H04W72/14 ,  H04W92/20

Abstract: Aspects of the present disclosure relate to methods and apparatus for interference management of wireless links with overriding link priority. The switched wireless link or connection may have lower or higher priority than the non-switched or scheduled link. The priority order between the links may be overridden in certain conditions.

公开(公告)号：US09867163B2

公开(公告)日：2018-01-09

申请号：US13931346

申请日：2013-06-28

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Tao Luo ,  Tingfang Ji ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei ,  Gavin B. Horn

IPC: H04W72/00 ,  H04W52/02 ,  H04W48/14 ,  H04W48/12

CPC classification number: H04W72/005 ,  H04W48/12 ,  H04W48/14 ,  H04W52/0206 ,  Y02B70/32 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

Abstract: The described aspects include methods and apparatus for activating a transmitter to communicate in a wireless network. A small cell can determine to activate the transmitter to serve user equipment (UE) in a wireless network. The small cell can then broadcast a portion of a set of broadcast signals in a radio frame and broadcast a remaining portion of the set of broadcast signals along with the portion of the set of broadcast signals in a subsequent radio frame. By refraining from immediately broadcasting all broadcast signals, the small cell can mitigate interference to other small cells. In addition, a UE can determine whether to generate random access channel (RACH) sequences for proximity determination or uplink timing synchronization based on parameters received in a RACH order. Moreover, a small cell with an active transmitter can decode discovery signals from a device to facilitate handover determination.