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Power Amplifier Transmission Mode Switching in Wireless Communication Devices

A technology for wireless communication equipment and mode switching, which is applied in the field of transmission mode switching of power amplifiers in wireless communication equipment, and can solve problems such as amplifying noise effects, receiver desensitization, and obvious

Active Publication Date: 2020-05-26
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This interference may be particularly noticeable when the transmitter is operating in ET mode, as continuous power fluctuations amplify the noise effect and generate more interfering harmonics
Thus, following a tune-away, operation of a transmitter in ET mode by an active subscription may result in significant desensitization of a receiver used by an idle subscription for receiving paging messages

Method used

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  • Power Amplifier Transmission Mode Switching in Wireless Communication Devices
  • Power Amplifier Transmission Mode Switching in Wireless Communication Devices
  • Power Amplifier Transmission Mode Switching in Wireless Communication Devices

Examples

Experimental program
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Embodiment Construction

[0019] Various embodiments will be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like components. References to specific examples and implementations are for illustrative purposes, and are not intended to limit the scope of the claims.

[0020] The terms "mobile communication device," "mobile device," "communication device," "wireless communication device," and "wireless device" are used interchangeably herein to refer to any or all of the following: Telephones, personal or mobile multimedia players, personal data assistants (PDAs), laptops, tablets, smartbooks, smart watches, palmtops, wireless email receivers, multimedia Internet-capable cellular phones, wireless gaming controls and similar personal electronic devices including programmable processors and memory and circuitry for establishing wireless communication paths and sending / receiving data vi...

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PUM

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Abstract

Various embodiments include methods implemented on a wireless communication device for reducing interference during tuning away from a first subscription to a second subscription while a transmitter remains tuned to the first subscription. The method may include the operations of: when the transmitter is operating in an envelope tracking mode, determining whether the first subscription will use the transmitter during the tune-away to the second subscription; The transmitter will be used during the second subscription, switching the transmitter from envelope tracking mode to average power tracking mode. The method may also include the operations of determining whether the interference to the receiver by the transmitter exceeds a threshold; if the interference exceeds the threshold, switching the transmitter to an average power tracking mode during the tune away period; and if the interference does not exceed the threshold, using Transmitter is in envelope tracking mode.

Description

Background technique [0001] Some designs of wireless communication devices, such as smart phones, tablet computers, and laptop computers, contain one or more Subscriber Identity Module (SIM) cards that provide users with access to multiple separate mobile phone networks. Examples of mobile phone networks include third generation (3G), fourth generation (4G), long term evolution (LTE), time division multiple access (TDMA), frequency division multiple access (FDMA), code division multiple access (CDMA), broadband CDMA (WCDMA), Time Division Synchronous CDMA (TD-SCDMA), Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), Evolved High Speed ​​Packet Access (HSPA+), Dual Cell High Speed ​​Packet Access (DC-HSPA) , Evolution Data Optimized (EV-DO), Enhanced Data Rates for GSM Evolution (EDGE) and Single Carrier Radio Transmission Technology (1xRTT). [0002] To enable communication in various networks, wireless communication devices may...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B15/02H04B1/403H04W52/02
CPCH04W52/0251H04B1/406H04B15/02H04W52/0225H04W52/0261H04W88/06Y02D30/70H04W52/38
Inventor A·莫尔谢迪M·S·阿南德帕拉P·坎蒂三世
Owner QUALCOMM INC