公开(公告)号：US10028240B2

公开(公告)日：2018-07-17

申请号：US15445572

申请日：2017-02-28

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  Gavin Bernard Horn ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Jing Jiang ,  Kambiz Azarian Yazdi ,  Peter Pui Lok Ang ,  Peter Gaal ,  Krishna Kiran Mukkavilli ,  Alexei Yurievitch Gorokhov

IPC: H04W56/00 ,  H04W48/14 ,  H04L5/00 ,  H04W4/06 ,  H04W8/00

Abstract: Methods, systems, and devices are described for wireless communication. In one method, a method of wireless communication at a user equipment (UE) includes receiving a synchronization signal. The synchronization signal may be common to a plurality of cells within a network. The method further includes acquiring a timing of the network based on the synchronization signal, and transmitting a pilot signal in response to acquiring the timing of the network. The pilot signal may identify the UE and be concurrently receivable by the plurality of cells within the network. Other aspects, features, and embodiments are also claimed and described.

公开(公告)号：US09985802B2

公开(公告)日：2018-05-29

申请号：US14705787

申请日：2015-05-06

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

CPC classification number: H04L25/0226 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0058 ,  H04L5/0082 ,  H04L5/0096 ,  H04L47/12 ,  H04W72/0446

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：US20180139758A1

公开(公告)日：2018-05-17

申请号：US15808637

申请日：2017-11-09

Applicant: QUALCOMM Incorporated

Inventor： Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Paolo Minero ,  Hobin Kim ,  Raghu Challa ,  Jing Jiang ,  Joseph Binamira Soriaga

IPC: H04W72/04 ,  H04W72/08 ,  H04W24/08 ,  H04W24/02

CPC classification number: H04W72/0466 ,  H04L1/0023 ,  H04L1/005 ,  H04L1/0075 ,  H04W24/02 ,  H04W24/08 ,  H04W72/085

Abstract: Systems, methods and apparatus select a code book based on channel conditions and performance of a demodulator or demapper in a wireless receiver. The method may include determining that the receiver in a first wireless communication apparatus is configured for iteratively processing signals received from a channel, selecting a code book for use in communicating over the channel based on conditions affecting transmission of the signals through the channel and performance information associated with a demapper in the receiver, and identifying the selected code book in one or more control channels transmitted to a second wireless communication apparatus.

公开(公告)号：US20180054780A1

公开(公告)日：2018-02-22

申请号：US15633376

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Alexei Yurievitch Gorokhov ,  Chengjin Zhang ,  Chirag Sureshbhai Patel ,  Tamer Kadous

IPC: H04W52/02 ,  H04W72/12 ,  H04W24/02

CPC classification number: H04W52/0219 ,  H04W24/02 ,  H04W52/0216 ,  H04W68/02 ,  H04W72/12 ,  H04W72/1257 ,  H04W76/28 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/1242 ,  Y02D70/126 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/20 ,  Y02D70/21 ,  Y02D70/24

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station operating in unlicensed spectrum may temporarily increase a paging opportunity window (POW) size, or reduce a time between POWs, in order to meet performance metrics or account for time periods when a base station is unable to win access to the wireless medium during a POW. In some cases, a UE may identify a failed listen-before-talk procedure and autonomously update the POW size. In other examples, a base station may initiate a change in POW size or increase a number of paging opportunities in order to meet achieve one or more key performance indicators (KPIs). After a predetermined period, or after a triggering condition is no longer present, the UE and the base station may reset the POW size or the number of paging opportunities to a nominal amount to conserve power.

公开(公告)号：US09872242B2

公开(公告)日：2018-01-16

申请号：US14606757

申请日：2015-01-27

Applicant: QUALCOMM Incorporated

Inventor： Lei Xiao ,  Brian Clarke Banister ,  Amir Farajidana ,  Alexei Yurievitch Gorokhov

IPC: H04L5/00 ,  H04W48/20 ,  H04B7/0417 ,  H04B7/04 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04W48/20 ,  H04B7/0417 ,  H04B7/0478 ,  H04L5/0035 ,  H04L5/0057 ,  H04L5/0073 ,  H04W24/10 ,  H04W72/042

Abstract: Certain example embodiments of the present disclosure provide techniques for joint transmission of channel state information reference signals (CSI-RS) from multiple transmission points (TPs) for channel state feedback and/or TP selection. An example method generally includes coordinating with one or more other TPs to jointly transmit a channel state information reference signal (CSI-RS) to a user equipment (UE); signaling a reporting restriction to the UE; receiving precoding matrix indicator (PMI) feedback from the UE based on the jointly transmitted CSI-RS and subject to the reporting restriction; and selecting one or more of the TPs to serve based on the PMI feedback.

公开(公告)号：US20170359714A1

公开(公告)日：2017-12-14

申请号：US15386114

申请日：2016-12-21

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Tingfang Ji ,  Chong Li ,  Shailesh Patil ,  Joseph Binamira Soriaga ,  Jing Jiang ,  Wei Zeng ,  Alexei Yurievitch Gorokhov ,  Junyi Li

IPC: H04W8/00 ,  H04W74/08 ,  H04W64/00 ,  H04W72/02

CPC classification number: H04W8/005 ,  H04W64/006 ,  H04W72/02 ,  H04W74/08 ,  H04W74/0825 ,  H04W92/18

Abstract: Device detection in networks with mixed mobility devices is discussed. Devices in the network first determine a discovery mode from a plurality of discovery modes, wherein the determining is based on a mobility state of the wireless device. The device identifies a set of resources associated with the determined discovery mode, wherein each of the plurality of discovery modes is provisioned with separate resources. A discovery signal is transmitted using the identified set of resources according to the discovery mode. Thus, devices with higher mobility will generally send discovery signals more often than devices that are static or semi-static.

公开(公告)号：US09826419B2

公开(公告)日：2017-11-21

申请号：US14685347

申请日：2015-04-13

Applicant: QUALCOMM Incorporated

Inventor： Pratik Kotkar ,  Alexei Yurievitch Gorokhov ,  Sachin Saraswat ,  Ning Yin ,  Srinivasan Rajagopalan ,  Muralidharan Murugan ,  Santosh Kumar Rongala

IPC: H04W24/02 ,  H04L5/14 ,  H04L1/18 ,  H04L29/06 ,  H04W48/16 ,  H04W84/04 ,  H04W52/02

CPC classification number: H04W24/02 ,  H04L1/1812 ,  H04L5/14 ,  H04L65/4076 ,  H04W48/16 ,  H04W52/0219 ,  H04W52/0229 ,  H04W84/045 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164

Abstract: Techniques for optimized cell acquisition for long term evolution (LTE) time division duplex (TDD) systems or closed subscriber group (CSG)/evolved Multicast Broadcast Multimedia Service (eMBMS) capable user equipments (UEs) are disclosed. A UE obtains configuration information, CSG capability information, and/or eMBMS capability information for a cell. The UE also stores the obtained information for the cell in a cell information database. In some aspects, the UE may employ the CSG and/or eMBMS capability information to select a weaker cell, during initial frequency scan at power up of the UE, based on cell capability. Additionally or alternatively, the UE may employ the configuration information to determine an initial mutual information (Mi) hypothesis value for physical hybrid-automatic repeat request (HART) indicator channel (PHICH) group mapping of the cell. Additionally or alternative, radio link failures and/or out of synch events may be predicted and proactive responses employed based on previously obtained solutions.

公开(公告)号：US20170093545A1

公开(公告)日：2017-03-30

申请号：US15249954

申请日：2016-08-29

Applicant: QUALCOMM Incorporated

Inventor： Tamer Adel Kadous ,  Chirag Sureshbhai Patel ,  Ahmed Kamel Sadek ,  Nachiappan Valliappan ,  Tao Luo ,  Alexei Yurievitch Gorokhov

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0055 ,  H04L5/001 ,  H04L5/0039 ,  H04L5/0094

Abstract: Techniques for communication are disclosed. A method may include selecting from a subframe two or more resource elements for control signaling, wherein the subframe includes a plurality of symbol periods and each symbol period includes a plurality of resource elements, wherein the selected two or more resource elements are associated with a concurrent symbol period, and transmitting a resource allocation message to an access terminal, wherein the resource allocation message indicates that the selected two or more resource elements are allocated for control signaling.

公开(公告)号：US09473224B2

公开(公告)日：2016-10-18

申请号：US14276290

申请日：2014-05-13

Applicant: QUALCOMM Incorporated

Inventor： Alexei Yurievitch Gorokhov ,  Amir Farajidana ,  Juan Montojo

IPC: H04B7/04 ,  H04W24/10 ,  H04B7/02 ,  H04B7/06 ,  H04L27/26

CPC classification number: H04B7/0456 ,  H04B7/022 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/0478 ,  H04B7/0639 ,  H04L27/2601 ,  H04W24/10

Abstract: Methods and apparatuses for wireless communication are provided. In an aspect, the method includes receiving a plurality of channel quality reports based on a multiple description coding schedule and determining a transmission parameter based on the plurality of channel quality reports. In another aspect, the method includes receiving a family of codebooks organized based on a transmission rank, and reporting, using a multiple description coding scheme, a channel quality parameter using a codebook entry from the family of codebooks.

Abstract translation: 提供了无线通信的方法和装置。 一方面，该方法包括基于多个描述编码调度接收多个信道质量报告，并且基于多个信道质量报告确定传输参数。 另一方面，该方法包括接收基于传输等级组织的码本族，并且使用多描述编码方案，使用来自码本族的码本条目来报告信道质量参数。

公开(公告)号：US20160269047A1

公开(公告)日：2016-09-15

申请号：US14942265

申请日：2015-11-16

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  Peter Gaal ,  Alexei Yurievitch Gorokhov ,  Kambiz Azarian Yazdi ,  John Edward Smee

IPC: H03M13/17 ,  H03M13/00 ,  H03M13/27

CPC classification number: H03M13/27 ,  H03M13/1102 ,  H03M13/2957 ,  H03M13/353 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0023 ,  H04L1/0071

Abstract: Bursty interference or puncturing may be identified, either by a user equipment (UE) or by a base station. In response, a protection scheme may be applied to protect communications from the bursty interference or puncturing. The protection scheme may include using both time and frequency interleaving of code blocks in the communications. The protection scheme may also include modifying the modulation and coding scheme (MCS), coding rate, precoding matrix index (PMI), or rank indicator (RI) used in the communications. The protection scheme may also include using a universal low-density parity check (LDPC) code in the transmission of the communications.

Abstract translation: 可以由用户设备（UE）或基站识别突发干扰或穿孔。 作为响应，可以应用保护方案来保护通信免受突发干扰或穿孔。 保护方案可以包括在通信中使用代码块的时间和频率交错。 保护方案还可以包括修改在通信中使用的调制和编码方案（MCS），编码率，预编码矩阵索引（PMI）或秩指示符（RI）。 保护方案还可以包括在通信的传输中使用通用低密度奇偶校验（LDPC）码。