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Communication apparatus and control method therefor

a technology of communication apparatus and control method, applied in the direction of electrical apparatus, wireless communication, power management, etc., can solve the problems of reducing power consumption increase, power consumption suppression, etc., to prevent a decrease in throughput or data loss, suppress power consumption

Active Publication Date: 2016-04-19
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]According to the aspect, it is possible to prevent a decrease in throughput or a data loss while suppressing power consumption by a power saving mode.

Problems solved by technology

Many portable devices are driven by a battery, and thus suppression of power consumption is an important issue for these devices.
If the Awake state is kept for a long time, it is possible to prevent a data loss or a decrease in throughput but the power consumption increases.
Transiting to the Doze state after the predetermined time elapses may cause a decrease in throughput or a data loss if there is data to be received or transmitted.

Method used

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Examples

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Embodiment Construction

[0023]A communication apparatus and a control method therefor according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Note that a case in which a wireless local area network (wireless LAN) complying with the IEEE802.11 standard is used will be explained below. A communication mode to which the present invention is applicable, however, is not limited to the wireless LAN or infrastructure mode, and various modifications can be made within the scope of the technical idea.

[0024]In the following embodiment, the communication apparatus can operate in a power saving mode. In the power saving mode, an intermittent process of transmitting / receiving data only under a specific condition switches between enabling (Awake state) and disabling (Doze state) of the operating state of a wireless communication interface. In the Awake state, the wireless communication interface is in the operating state, and can transmit / receive...

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PUM

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Abstract

An operating state of a communication unit of a communication apparatus is kept for a keep period in accordance with a transmission cycle of control information transmitted by another communication apparatus. The communication apparatus wirelessly communicates with the other communication apparatus in the operating state. If the keep period elapses, the communication unit is switched from the operating state to a hibernation state. The communication apparatus does not communicate with the other communication apparatus in the hibernation state.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a communication apparatus for wireless communication.[0003]2. Description of the Related Art[0004]In recent years, products incorporating a wireless communication function represented by a wireless local area network (to be referred to as a “wireless LAN” hereinafter) complying with the IEEE802.11 series have become widespread. Examples of such products incorporating a wireless LAN are portable devices such as a camera and a personal digital assistant (PDA). Many portable devices are driven by a battery, and thus suppression of power consumption is an important issue for these devices.[0005]The IEEE802.11 specification defines a power saving mode (power saving enabled) in addition to a normal mode (power saving disabled) in which a wireless LAN interface is always enabled. In the power saving mode, an intermittent process of transmitting / receiving data only under a specific condition ach...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04W52/02
CPCH04W52/0241H04W52/0238H04W52/0212
Inventor YAMAKI, TOMOKAZU
Owner CANON KK