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1.发明授权公开(公告)号：US10999886B2
公开(公告)日：2021-05-04
申请号：US15232672
申请日：2016-08-09
Applicant: QUALCOMM Incorporated
Inventor： Peter Gaal , Srinivas Yerramalli , Durga Prasad Malladi , Yongbin Wei , Alexei Yurievitch Gorokhov , Brian Banister , Michael Lee McCloud , Tao Luo , Supratik Bhattacharjee , Chengjin Zhang , Ravi Teja Sukhavasi
Abstract: Various aspects related to techniques for harmonization between common reference signal (CRS) and demodulation reference signal (DM-RS) based transmission modes (TMs) in unlicensed spectrum are described. In one aspect, a downlink/uplink (DL/UL) subframe configuration may be signaled for each subframe. Information provided by the DL/UL subframe configuration may indicate whether the respective downlink subframe is a single-frequency network (MBSFN) subframe (associated with DM-RS-based TM) or a non-MBSFN subframe (associated with CRS-based TM). In another aspect, periodic as well as aperiodic channel state information (CSI) reporting requests may be supported. In yet another aspect, discontinued reception (DRX) wake ups for unlicensed carriers may be explicitly or implicitly indicated to a user equipment (UE) via a carrier in a licensed spectrum.
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公开(公告)号：US10560957B2
公开(公告)日：2020-02-11
申请号：US16013674
申请日：2018-06-20
Applicant: QUALCOMM Incorporated
Inventor： Stefan Brueck , Sunil Kumar Kandukuri Narayana , Brian George , Chengjin Zhang
Abstract: The present disclosure relates to resolving out-of-sync uplink grants for communication in an unlicensed spectrum. For example, a user equipment (UE) may receive an uplink grant from a network entity on a downlink communication channel, wherein the uplink grant is associated with a system frame number (SFN). The UE may further determine, based on the SFN, that the uplink grant is out of order with one or more stored uplink grants within a queue. Additionally, the UE may insert the uplink grant in an ordered position within the queue relative to the one or more stored uplink grants.
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公开(公告)号：US20170303236A1
公开(公告)日：2017-10-19
申请号：US15489599
申请日：2017-04-17
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Juan Montojo , Taesang Yoo , Siddhartha Mallik , Andrei Radulescu , Chirag Patel , Chengjin Zhang
CPC classification number: H04W68/02 , H04W16/14 , H04W68/005 , H04W72/005 , H04W72/0453 , H04W74/0808 , H04W76/28 , H04W88/02 , H04W88/08
Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a configuration for enhanced paging to a UE being served by a cell over a shared frequency band. The enhanced paging may include multiple paging intervals for each paging cycle. The UE may enable reception for a paging interval and determine whether the UE receives a downlink transmission. The UE may lengthen a paging interval or enable reception during a second paging interval based in part on determining whether the UE receives a downlink transmission. In some examples, the UE may receive a paging queue status indication indicating that paging information will be transmitted during a paging interval or a later interval, or indicating that no paging information is present at a serving cell.
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公开(公告)号：US10952142B2
公开(公告)日：2021-03-16
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
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.
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公开(公告)号：US10212619B2
公开(公告)日：2019-02-19
申请号：US15635547
申请日：2017-06-28
Applicant: QUALCOMM Incorporated
Inventor： Vaibhav Singhal , Heechoon Lee , Alexei Yurievitch Gorokhov , Sarabjot Singh Khangura , Chengjin Zhang , Amir Farajidana , Amir Aminzadeh Gohari , Wenshu Zhang
Abstract: In wireless communication networks using carrier aggregation including a secondary component carrier in unlicensed spectrum, a user equipment (UE) may monitor a downlink radio link quality of secondary cells for an event indicating failure of a communication link in the unlicensed spectrum with a secondary cell. The UE detects one or more failure events based on the downlink radio link quality. When a designated set of failure events is detected, the UE declares a failure state on the secondary cell. In response to the failure state, the UE may adjust operations related to the secondary component carrier in the unlicensed spectrum in order to save power and resources.
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Patent Agency Ranking
公开(公告)号：US20180288738A1
公开(公告)日：2018-10-04
申请号：US16001918
申请日：2018-06-06
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Juan Montojo , Taesang Yoo , Siddhartha Mallik , Andrei Dragos Radulescu , Chirag Sureshbhai Patel , Chengjin Zhang
IPC: H04W68/02 , H04W72/04 , H04W16/14 , H04W68/00 , H04W76/28 , H04W72/00 , H04W74/08 , H04W88/02 , H04W88/08
CPC classification number: H04W68/02 , H04W16/14 , H04W68/005 , H04W72/005 , H04W72/0453 , H04W74/0808 , H04W76/28 , H04W88/02 , H04W88/08
Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a configuration for enhanced paging to a UE being served by a cell over a shared frequency band. The enhanced paging may include multiple paging intervals for each paging cycle. The UE may enable reception for a paging interval and determine whether the UE receives a downlink transmission. The UE may lengthen a paging interval or enable reception during a second paging interval based in part on determining whether the UE receives a downlink transmission. In some examples, the UE may receive a paging queue status indication indicating that paging information will be transmitted during a paging interval or a later interval, or indicating that no paging information is present at a serving cell.
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公开(公告)号：US20180213512A1
公开(公告)日：2018-07-26
申请号：US15874224
申请日：2018-01-18
Applicant: QUALCOMM Incorporated
Inventor： Jae Ho Ryu , Valentin Alexandru Gheorghiu , Chengjin Zhang
CPC classification number: H04W72/042 , H04L5/001 , H04L5/0098 , H04L27/0006 , H04W16/14 , H04W56/0005 , H04W56/0045 , H04W72/0446 , H04W72/12
Abstract: Methods, systems, and devices for wireless communication are described. A wireless system may support efficient techniques for adding license assisted access (LAA) secondary cells (SCells) to a secondary timing advance group (sTAG). For example, a base station may determine whether to add an LAA SCell to an sTAG based on whether the LAA SCell is a scheduling carrier for a user equipment (UE). That is, the base station may determine whether to add an LAA SCell to an sTAG based on whether a UE scheduled to communicate over the LAA SCell is self-scheduled over the LAA SCell or cross-carrier scheduled over another cell. As such, the wireless system may improve the likelihood that a UE may receive a downlink transmission over an LAA SCell in an sTAG that the UE may use to determine a downlink timing reference for an uplink transmission over the LAA SCell.
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公开(公告)号：US20160014695A1
公开(公告)日：2016-01-14
申请号：US14329731
申请日：2014-07-11
Applicant: QUALCOMM Incorporated
Inventor： Navid Ehsan , Raghu Narayan Challa , Chengjin Zhang
CPC classification number: H04W52/0235 , H04L5/14 , H04W76/28 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/164 , Y02D70/24
Abstract: Methods, systems, and devices are described for improving discontinuous reception (DRX) power usage by dynamically updating (e.g., adjusting) a warmup period. A user equipment (UE) communicating with a wireless network may operate in DRX mode by periodically powering down radio components. For example, during a first DRX On Duration, the UE may estimate the variance in channel conditions. The UE may then update the baseband convergence portion of the warmup time prior to the upcoming DRX On Duration. The UE may reduce the baseband convergence period or increase the baseband convergence period based on a function of the channel variance. The UE may also maintain a table relating a set of channel variance values with a set of baseband convergence periods, and update the baseband convergence period based on the table.
Abstract translation: 描述了通过动态地更新（例如，调整）预热周期来改善不连续接收（DRX）功率使用的方法，系统和设备。 与无线网络通信的用户设备（UE）可以通过周期性地关闭无线电组件的功率来以DRX模式操作。 例如，在第一DRX持续时间期间，UE可以估计信道条件的方差。 然后，UE可以在即将到来的DRX开启持续时间之前更新预热时间的基带收敛部分。 UE可以基于信道方差的函数来减小基带收敛周期或增加基带收敛周期。 UE还可以维护与一组信道方差值与一组基带收敛周期相关的表，并且基于该表更新基带收敛周期。
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9.发明授权Combined intelligent receive diversity (IRD) and mobile transmit diversity (MTD) with independent antenna switching for uplink and downlink 有权组合智能接收分集（IRD）和移动发射分集（MTD），具有上行链路和下行链路的独立天线切换公开(公告)号：US09236929B2
公开(公告)日：2016-01-12
申请号：US14310510
申请日：2014-06-20
Applicant: QUALCOMM Incorporated
Inventor： Christos Komninakis , Daniel F. Filipovic , Chengjin Zhang
CPC classification number: H04B7/0691 , H04B7/0602 , H04B7/0608 , H04B7/0814 , H04B7/082 , H04B7/0831 , H04B7/0874 , H04B7/0888
Abstract: Methods and apparatus are provided for allowing a transmitter (Tx) to perform antenna selection independently of a receiver (Rx) in a transceiver supporting both transmit diversity and receive diversity. Certain aspects may utilize a cross switch, which may be used in a parallel or cross configuration, to provide for the independent antenna selection, such that the Rx may maintain the ability to operate on the same antenna as the Tx, on another antenna, or on both antennas for enhanced receive diversity. Furthermore, certain aspects may employ additional switching in the baseband domain in an effort to avoid, or at least reduce, switching glitches in the Rx caused by changing the cross switch configuration. In this manner, the Rx need not re-converge upon antenna switching.
Abstract translation: 提供了允许发射机（Tx）独立于支持发射分集和接收分集的收发机中的接收机（Rx）执行天线选择的方法和装置。 某些方面可以利用可以以并行或交叉配置使用的交叉开关来提供独立天线选择，使得Rx可以保持在与另一天线上在Tx相同的天线上操作的能力，或者 在两个天线上增强接收分集。 此外，某些方面可以在基带域中采用额外的切换，以努力避免或至少减少通过改变交叉交换机配置导致的Rx中的切换毛刺。 以这种方式，Rx不需要在天线切换时重新收敛。
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公开(公告)号：US10412704B2
公开(公告)日：2019-09-10
申请号：US16001918
申请日：2018-06-06
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Juan Montojo , Taesang Yoo , Siddhartha Mallik , Andrei Dragos Radulescu , Chirag Sureshbhai Patel , Chengjin Zhang
IPC: H04W68/02 , H04W72/00 , H04W72/04 , H04W16/14 , H04W68/00 , H04W76/28 , H04W88/02 , H04W88/08 , H04W74/08
Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a configuration for enhanced paging to a UE being served by a cell over a shared frequency band. The enhanced paging may include multiple paging intervals for each paging cycle. The UE may enable reception for a paging interval and determine whether the UE receives a downlink transmission. The UE may lengthen a paging interval or enable reception during a second paging interval based in part on determining whether the UE receives a downlink transmission. In some examples, the UE may receive a paging queue status indication indicating that paging information will be transmitted during a paging interval or a later interval, or indicating that no paging information is present at a serving cell.
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