公开(公告)号：US10375685B2

公开(公告)日：2019-08-06

申请号：US15874224

申请日：2018-01-18

Applicant: QUALCOMM Incorporated

Inventor： Jae Ho Ryu ,  Valentin Alexandru Gheorghiu ,  Chengjin Zhang

IPC: H04W72/04 ,  H04W16/14 ,  H04L5/00 ,  H04W56/00 ,  H04L27/00 ,  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.

公开(公告)号：US10034269B2

公开(公告)日：2018-07-24

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

IPC: H04W68/02 ,  H04W76/28 ,  H04W16/14 ,  H04W88/02 ,  H04W88/08 ,  H04W72/00 ,  H04W72/04 ,  H04W68/00 ,  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.

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：US20140302803A1

公开(公告)日：2014-10-09

申请号：US14310510

申请日：2014-06-20

Applicant: QUALCOMM Incorporated

Inventor： Christos Komninakis ,  Daniel F. Filipovic ,  Chengjin Zhang

IPC: H04B7/08 ,  H04B7/06

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。