公开(公告)号：US20180092056A1

公开(公告)日：2018-03-29

申请号：US15490830

申请日：2017-04-18

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal ,  Hung Ly

IPC: H04W56/00

CPC classification number: H04W56/0005 ,  H04L5/005 ,  H04L5/0053 ,  H04W56/00 ,  H04W72/0413 ,  H04W72/0453

Abstract: Wireless communication devices are adapted to facilitate multiple synchronization channels within a single carrier. In some examples, an apparatus for wireless communication may transmit a first synchronization channel at a first frequency in a carrier bandwidth, and at least one additional synchronization channel at a different respective frequency in the carrier bandwidth. In some examples, an apparatus for wireless communication may scan a carrier bandwidth for one of a plurality of synchronization channels conveyed at different respective frequencies in the carrier bandwidth, and discover a synchronization channel from among the plurality of synchronization channels. The apparatus may further receive information conveyed over the discovered synchronization channel and utilize the information to access the carrier. Other aspects, embodiments, and features are also included.

公开(公告)号：US20170331647A1

公开(公告)日：2017-11-16

申请号：US15395814

申请日：2016-12-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy Abdelghaffar ,  Jing Jiang ,  Seyong Park ,  Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04L25/03 ,  H04L27/26 ,  H04B7/26

CPC classification number: H04L25/03006 ,  H04B7/2621 ,  H04L27/2601 ,  H04L27/2634

Abstract: Techniques for processing of symbols (e.g., orthogonal frequency division multiplexing (OFDM) or single carrier-frequency division multiple access (SC-FDMA) symbols) provide enhanced out-of-band (OOB) suppression of the symbols and also provide reduced inter-symbol interference (ISI) between a symbol and a subsequent symbol. Multiple frequency tones of a symbol may be divided into two or more subsets of tones. For example, subsets of tones associated with a head portion or a tail portion of an OFDM symbol may be processed with a relatively long weighted overlap-add (WOLA) weighting length or filtering length, and a subset of tones associated with a center portion of the OFDM symbol may be processed with a relatively short WOLA weighting length or filtering length. Such heterogeneous processing of tones within a symbol may provide enhanced inter-channel interference (ICI) and improved OOB suppression and also provide reduced ISI for the center tones of the symbol.

公开(公告)号：US09814050B2

公开(公告)日：2017-11-07

申请号：US15089412

申请日：2016-04-01

Applicant: QUALCOMM Incorporated

Inventor： Saurabha Tavildar ,  Wei Zeng ,  Joseph Binamira Soriaga

IPC: H04W72/04 ,  H04W74/08

CPC classification number: H04W72/048 ,  H04W4/70 ,  H04W56/00 ,  H04W72/0406 ,  H04W74/00 ,  H04W74/0833 ,  H04W76/25

Abstract: Mobile originated and terminated data transmissions are discussed. Communication devices such as user equipment (UE) can be dynamically configured by a network to send and receive data. When a UE connects to a new network, the network can determine mobility of the UE and/or the network resource allocation granularity. Based at least on the network's determinations, the UE can be configured such that access data having a comparatively long life span is used and reused for multiple data transmissions. In some scenarios, access data can be refreshed after expiration of a period of time. Refresh time can be equal to expected life span of reusable access data. After UE configuration, the UE performs mobile originated and terminated data transmissions according to the configuration. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20170295047A1

公开(公告)日：2017-10-12

申请号：US15429730

申请日：2017-02-10

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04L27/20 ,  H04L27/26 ,  H04L1/00

CPC classification number: H04L27/20 ,  H04L1/0033 ,  H04L27/2078 ,  H04L27/2607 ,  H04L27/2614 ,  H04L27/2627 ,  H04L27/2636 ,  H04L27/2698 ,  H04L27/3411

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may modulate a first binary sequence using binary phase shift keying on a first axis of a complex plane. The device may modulate a second binary sequence using binary phase shift keying on a second plane of a complex axis. The first axis and the second axis may be orthogonal. The device may transmit the first binary sequence and the second binary sequence according to the modulation of the first binary sequence and the second binary sequence.

公开(公告)号：US20170222696A1

公开(公告)日：2017-08-03

申请号：US15182433

申请日：2016-06-14

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Wei Zeng ,  Jing Jiang

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

CPC classification number: H04B7/0417 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0055 ,  H04L25/0224 ,  H04W28/0236 ,  H04W72/042

Abstract: Techniques for utilizing resources in a downlink (DL) common burst are described herein. In one aspect, a channel state information reference signal (CSI-RS) may be included in the DL common burst for channel estimation. In another aspect, a demodulation reference signal (DM-RS) and DL data may be included in the DL common burst for low latency data transmission. In yet another aspect, a measurement reference signal (M-RS) may be included in the DL common burst to assist handover decisions. The techniques described herein may be used for various wireless communications systems.

公开(公告)号：US20170181149A1

公开(公告)日：2017-06-22

申请号：US15268450

申请日：2016-09-16

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Tao Luo ,  Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04W72/04

CPC classification number: H04L5/0094 ,  H04L5/001 ,  H04L5/003 ,  H04L5/0039 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0087

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit control information using a narrowband common control region that occupies a portion of a system bandwidth. In some cases, data may be multiplexed during the same time period in tones that are not used by the common control region. The base station may transmit control region configuration information to one or more user equipment (UE) devices such as the bandwidth, central frequency, and multiplexing status of the common control region. In some cases, the common control region may be divided into subbands, and different UEs may be assigned to monitor different subbands. Unassigned UEs may monitor a default anchor subband.

公开(公告)号：US20160270053A1

公开(公告)日：2016-09-15

申请号：US14926809

申请日：2015-10-29

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  John Edward Smee ,  Naga Bhushan

IPC: H04W72/04 ,  H04W52/02 ,  H04W72/08 ,  H04W28/26 ,  H04L29/08

CPC classification number: H04W72/048 ,  H04L67/12 ,  H04W28/26 ,  H04W52/0212 ,  H04W72/0446 ,  H04W72/085 ,  H04W72/1289 ,  H04W74/004 ,  H04W74/08 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21

Abstract: Wireless communications systems and methods related to the reduction in a probability of collision for grant-less transmissions from internet of everything (IOE) devices while not increasing search complexity at a base station are disclosed. An IOE device randomly selects a first access resource from a common pool that the base station searches to initiate a transmission. If a metric associated with the data transmission is predicted to exceed a threshold, the IOE device also requests a second access resource from a reserved access pool from the base station, that the base station does not search. The IOE includes the request in the data transmission. The base station and the IOE device switch to the second access resource after the base station identifies an available resource from the reserved access pool and the IOE device completes the data transmission using the second access resource.

Abstract translation: 公开了一种无线通信系统和方法，其与来自所有互联网（IOE）设备的免授权传输的减少概率相关，同时不增加基站处的搜索复杂度。 IOE设备从基站搜索启动传输的公共池随机选择第一接入资源。 如果预测与数据传输相关联的度量超过阈值，则IOE设备还从基站的预留接入池请求第二接入资源，即基站不搜索。 IOE包括数据传输中的请求。 基站和IOE设备在基站从保留的接入池中识别可用资源之后切换到第二接入资源，并且IOE设备使用第二接入资源完成数据传输。