公开(公告)号：US20190165879A1

公开(公告)日：2019-05-30

申请号：US16202927

申请日：2018-11-28

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang

IPC: H04L1/00 ,  H04L1/18 ,  H04W72/04 ,  H04W72/14 ,  H04L5/00 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, randomized shifts of a base sequence may be used for transmitting uplink control information. For example, a user equipment (UE) may identify a base sequence of an uplink control message. The UE may also receive signaling that indicates a UE-specific initial shift that may be applied to the base sequence. In some examples, the signaling that indicates the randomized shift may be explicit, implicit, or a combination thereof. After determining one or more shifted sequences based on the UE-specific initial shift, a payload of the uplink control message, and the base sequence, the UE may select a shifted sequence to be transmitted, where the selection is based on a payload of the uplink control message. For example, different shifted sequences may be selected for respective transmissions of scheduling requests, 1-bit acknowledgments (ACKs), 2-bit ACKs, and the like.

公开(公告)号：US10298352B2

公开(公告)日：2019-05-21

申请号：US15969245

申请日：2018-05-02

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Seyong Park ,  Yi Huang ,  Peter Gaal ,  Hao Xu

IPC: H04J11/00 ,  H04L27/26 ,  H04L5/00 ,  H04L1/00

Abstract: Aspects of the disclosure relate to a new radio (NR) single symbol design in which reference signals and data tones are frequency division multiplexed (FDM). In a particular aspect of the disclosure, a different encoding sequence is assigned to each possible value of an information element (IE) such that a minimum distance between encoding sequences corresponding to any pair of possible values is maximized. A symbol corresponding to a particular value of the IE is then transmitted. Here, the symbol is configured according to a sequence selected from a set of sequences corresponding to the particular value of the IE, such that the symbol comprises a plurality of reference signals FDM with a plurality of FDM resource elements.

公开(公告)号：US10291451B2

公开(公告)日：2019-05-14

申请号：US15711697

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Durga Prasad Malladi

IPC: H04L27/26 ,  H04W74/08 ,  H04W74/00 ,  H04W28/18 ,  H04W88/08 ,  H04B1/00 ,  H04L5/00 ,  H04W4/70

Abstract: Certain aspects of the present disclosure provide techniques for improving a physical random access channel (PRACH) design, for example, to support larger cell radius for communications in a wireless network. In aspects, a method of wireless communication by a user equipment (UE) is provided. The method generally includes receiving at least one configuration of a plurality of available narrowband physical random access channel (NPRACH) configurations or an indication of one of the plurality of NPRACH configurations. Each of the plurality of NPRACH configurations includes a different combination of at least two of a multi-level frequency hopping patter, cyclic prefix length, symbol group format, or tone spacing for NPRACH signals. The method also includes determining at least one resource within a plurality of available NPRACH resources according to the received configuration(s) or the received indication, and transmitting a NPRACH signal using the determined at least one resource.

公开(公告)号：US10285174B2

公开(公告)日：2019-05-07

申请号：US15371885

申请日：2016-12-07

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Alberto Rico Alvarino ,  Peter Gaal ,  Wanshi Chen ,  Yongbin Wei ,  Juan Montojo ,  Renqiu Wang ,  Hao Xu ,  Xiaofeng Wang

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/20

Abstract: Aspects of the present disclosure provide techniques for uplink (UL) data channel design. An example method is provided for operations which may be performed by a first apparatus. The example method generally comprises determining a number of pilot symbols to transmit for one or more slots of a first subframe based, at least in part, on a coverage enhancement (CE) level, and transmitting at least one uplink data channel having the determined number of pilot symbols in the one or more slots of the first subframe.

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：US20190007963A1

公开(公告)日：2019-01-03

申请号：US16020915

申请日：2018-06-27

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Peter Gaal ,  Xiao Feng Wang ,  Juan Montojo ,  Yi Huang ,  Renqiu Wang ,  Seyong Park

IPC: H04W72/14 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described that support discontinuous scheduling. A base station may transmit, to a user equipment (UE), a grant of resources of a communication channel over a multiple of aggregated TTIs. The UE may monitor a control channel for the grant of resources transmitted by base station. The base station and the UE may identify a location of an excluded TTI within the plurality of aggregated TTIs. The excluded TTI may correspond to a TTI for communicating synchronization signals, random access channel (RACH) signals, or the like. The base station may communicate with the UE via the resources of the communication channel over at least a subset of the aggregated TTIs based on the grant and the location of the excluded TTI.

公开(公告)号：US20180337810A1

公开(公告)日：2018-11-22

申请号：US15978965

申请日：2018-05-14

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Renqiu Wang ,  Yi Huang ,  Hao Xu

IPC: H04L27/26 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00

CPC classification number: H04L5/0048 ,  H04L5/0076 ,  H04L27/261

Abstract: Methods, systems, and devices for wireless communication are described. Pilot ratios (e.g., a ratio of pilot (or reference signal) resources to a total number of resources) may be adapted based on various properties associated with transmissions between wireless devices. For example, a wireless device (e.g., a user equipment (UE) or a base station) may use different transmission configurations for transmitting messages that include reference signals and data. Based on the transmission configuration, the wireless device may determine an adjustable pilot ratio based on the transmission configuration. In some cases, the adjustable pilot ratio may be explicitly signaled, or may be implicitly determined based on the transmission configuration. For example, a wireless device may transmit (or receive) an indication of the pilot ratio, or the wireless device may determine the pilot ratio based on a transmission configuration used for communicating with the other wireless device.

公开(公告)号：US20180124822A1

公开(公告)日：2018-05-03

申请号：US15799357

申请日：2017-10-31

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Wanshi Chen ,  Hao Xu ,  Hung Ly ,  Heechoon Lee

IPC: H04W74/00

CPC classification number: H04W74/006 ,  H04W74/0833 ,  H04W84/042

Abstract: Wireless communication devices are adapted to facilitate a random access procedure. According to one example, scheduled entity can transmit a first transmission that is received by a scheduling entity. The first transmission may include a physical random access channel (PRACH) preamble sequence and a first message including information for determining a device-specific network identifier for the scheduled entity. The scheduling entity may transmit a second transmission that is received by the scheduled entity. The second transmission may include information on a physical downlink control channel (PDCCH) addressed to the device-specific network identifier for the scheduled entity, and a second message on a physical downlink shared channel (PDSCH). Other aspects, embodiments, and features are also included.

公开(公告)号：US20180109406A1

公开(公告)日：2018-04-19

申请号：US15786541

申请日：2017-10-17

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Peter Pui Lok Ang ,  Jing Jiang ,  Tingfang Ji

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

CPC classification number: H04L27/2605 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0076 ,  H04L5/0094 ,  H04W72/0446

Abstract: Techniques are described that provide for resource block (RB) alignment in mixed numerology wireless communications, in which a number of RBs for a particular numerology may occupy less than an entire system bandwidth. A fractional bandwidth may be identified as a difference between the bandwidth of the integer number of RBs and the system bandwidth and may be used to transmit information using one or more fractional RBs that may have a same or different numerology as the integer number of RBs. In some examples a placement scheme may be selected for placing the integer number of RBs, one or more fractional RBs, and/or one or more guard bands, within the system bandwidth. Numbering schemes for transmitted RBs and placement schemes may be signaled or may be implicitly determined based on one or more numerologies of the transmitted RBs or transmitted fractional RBs.

公开(公告)号：US20170273026A1

公开(公告)日：2017-09-21

申请号：US15447914

申请日：2017-03-02

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Alberto Rico Alvarino ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Xiao Feng Wang ,  Renqiu Wang

IPC: H04W52/14 ,  H04L27/26 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04W52/143 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0051 ,  H04L25/0228 ,  H04L27/2649 ,  H04W4/06 ,  H04W4/70 ,  H04W4/90 ,  H04W52/42

Abstract: A device, such as a base station or user equipment (UE), may identify a narrowband reference signal (NB-RS) energy per resource element (EPRE) for a NB-RS to be transmitted in a wireless transmission. The device may identify a ratio of a narrowband physical downlink shared channel (N-PDSCH) EPRE to the NB-RS EPRE for orthogonal frequency division multiplexing (OFDM) symbols containing neither a cell-specific reference signal (CRS) nor a NB-RS. In deployments where NB transmissions are transmitted in a guard-band adjacent to a wideband system bandwidth, a device may identify a second ratio for N-PDSCH EPRE to CRS EPRE within OFDM symbols containing CRS. In deployments where NB transmissions are transmitted in-band with the wideband system bandwidth, a device may identify a third ratio of NB-RS EPRE to CRS EPRE, and a fourth ratio of N-PDSCH EPRE to NB-RS EPRE within OFDM symbols containing NB-RS transmissions.