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Dynamic voltage and frequency scaling in wireless modems

A scaling, voltage level technology used in wireless communications, instrumentation, power management, etc., to solve problems such as bandwidth not known

Active Publication Date: 2017-09-29
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in other circumstances, reducing the power consumption of the client device may prove to be challenging because the bandwidth of the signal (e.g., the signal carrying the frame) received by the client device may not be known

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  • Dynamic voltage and frequency scaling in wireless modems
  • Dynamic voltage and frequency scaling in wireless modems
  • Dynamic voltage and frequency scaling in wireless modems

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Embodiment Construction

[0059] The described embodiments are directed to methods and apparatus for wireless communications where dynamic voltage and frequency scaling (DVFS) can be used to save power when processing packets in a wireless communications device. In some cases, intra-frame detection may allow a device (eg, UE, STA) to determine whether to transition from a first (eg, lower) voltage level to a second (eg, higher) voltage level to process received One or more groupings of frames. Lower voltage levels may be chosen initially to enable adequate processing (e.g., clock frequency) of certain types of packets or frames. When high or very high throughput packets are detected, applying a higher voltage level may allow a subsequently used higher clock frequency to digitally process the contents of these high or very high throughput packets.

[0060] In some embodiments, a wireless communication device may determine a bandwidth to use from among a plurality of bandwidths supported by the device. ...

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Abstract

Methods and apparatuses are described in which dynamic voltage and frequency scaling may be used to save power when processing packets in a wireless communications device. In some cases, inframe detection may allow the device to determine whether to transition from a first (e.g., lower) voltage level to a second (e.g., higher) voltage level to process one or more packets of a received frame. For some packet types the first voltage level may be maintained. In other cases, the device may determine a bandwidth to use from among multiple bandwidths supported by the device. The bandwidth may be determined based on channel conditions. A voltage level may be identified that corresponds to the determined bandwidth and a processing voltage may be scaled to the identified voltage level. The device may be configured to operate in wireless local area network (WLAN) and / or in a cellular network (e.g., LTE).

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of April 2, 2014, an application number of 201480019580.7 (international application number PCT / US2014 / 032699), and an invention title of "Dynamic Voltage and Frequency Scaling in a Wireless Modem" . [0002] cross reference [0003] This patent application claims U.S. Patent Application No. 13 / 954,035, entitled "DYNAMICVOLTAGE AND FREQUENCY SCALING IN WIRELESS MODEMS," filed July 30, 2013, by Homchaudhuri et al., and Priority to U.S. Provisional Patent Application No. 61 / 809,257, entitled "DYNAMIC VOLTAGE AND FREQUENCY SCALING IN WIRELESS MODEMS," filed April 5, 2013, by Homchaudhuri et al., Each of these applications is assigned to the assignee of this application. technical field [0004] This invention relates to wireless communications, and more particularly to dynamic voltage and frequency scaling in wireless modems. Background technique [0005] Wireless com...

Claims

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Application Information

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IPC IPC(8): H04W52/02G06F1/32
CPCG06F1/3206G06F1/324G06F1/3296H04W52/0216H04W52/0229H04W52/029Y02D10/00Y02D30/70
Inventor S·霍姆乔德忽里J·邓肯X·张M·李A·贾亚拉曼D·C·林S·梅达
Owner QUALCOMM INC