公开(公告)号：US11438846B2

公开(公告)日：2022-09-06

申请号：US16544819

申请日：2019-08-19

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Amir Aminzadeh Gohari ,  Yi Huang ,  Peter Gaal ,  Chao Jin ,  Amir Farajidana ,  Alexei Yurievitch Gorokhov ,  Rebecca Wen-ling Yuan ,  Vishal Mahajan ,  Tarandeep Virk ,  Christos Komninakis

IPC: H04W72/04 ,  H04W52/14 ,  H04W74/08 ,  H04B1/713 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for maintaining phase coherency in the event of changes to uplink transmit power. For example, the techniques described herein may help mitigate the impact on phase continuity of uplink transmissions by UEs capable of dual connectivity (DC).

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

IPC: H04B1/44 ,  H04B7/06 ,  H04B7/08

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。

公开(公告)号：US11968288B2

公开(公告)日：2024-04-23

申请号：US17659469

申请日：2022-04-15

Applicant: QUALCOMM Incorporated

Inventor： Lennart Karl-Axel Mathe ,  Brian Clarke Banister ,  Christos Komninakis ,  Minkui Liu

IPC: H04L7/00 ,  H03M1/12 ,  H04W56/00

CPC classification number: H04L7/0079 ,  H03M1/1245 ,  H04W56/005

Abstract: An analog-to-digital converter (ADC) has been disclosed. In some implementations, the ADC is configured to generate ADC samples based on input signals and an ADC input clock. The ADC is further configured to generate at a first time point a synchronized start signal indicating a starting point of capturing the ADC samples. The start signal and a system clock can be synchronized at a second time point. At a third time point, a capturing sample clock for capturing the ADC samples is generated. The synchronized start signal and the capturing sample clock can be input to a counter to determine a time difference between the second and third time points. An ADC output timing of the ADC samples can be determined based on the time difference.

公开(公告)号：US11929766B2

公开(公告)日：2024-03-12

申请号：US17659468

申请日：2022-04-15

Applicant: QUALCOMM Incorporated

Inventor： Lennart Karl-Axel Mathe ,  Brian Clarke Banister ,  Christos Komninakis ,  Minkui Liu

IPC: H04B1/26 ,  H04B1/00 ,  H04B1/403 ,  H04B1/58

CPC classification number: H04B1/0007 ,  H04B1/0053 ,  H04B1/403 ,  H04B1/588

Abstract: According to embodiments, an example method for determining an analog-to-digital converter (ADC) output timing in a user equipment may include operating a switch in a first mode to route a system clock from an oscillator to an input of the ADC and determining a first ADC output timing based on a first set of ADC samples generated by the ADC. The method may also include operating the switch in a second mode to route analog signals from a transceiver of the user equipment to the input of the ADC and obtaining a second set of ADC samples generated by the ADC based on the analog signals.

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。