Method And Apparatus For Controlling Powder Saving Mode In Wireless Portable Internet System

a wireless portable internet and wireless technology, applied in the direction of instruments, wireless commuication services, high-level techniques, etc., can solve the problems of inefficient power saving in data communication systems, inefficient periodic switching to listening mode, and major limitation of battery life in wireless portable internet systems. the effect of reducing the overhead of signaling messages and reducing power consumption

Inactive Publication Date: 2007-11-29
KT CORP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0068] It is an advantage of the present invention to provide a power saving mode control method and device manageable by a base station and applicable to a sleep mode operation for reducing power consumption in a wireless portable Internet system.

Problems solved by technology

The above-described wireless portable Internet system not only performs communication near a fixed location but also has mobility in the metropolitan level differing from the conventional wireless LAN communication systems, and hence, batteries are usually used to supply power to the SS, and the duration of the batteries is a major limitation of the usage time in the wireless portable Internet system.
However, the periodic power saving mode is easy to manage, but its power saving efficiency is not good because most of the data traffic is shown at a specific time (i.e., a burst characteristic), and periodic switching to the listening mode is inefficient for power saving in the data communication system such as the Internet.
However, the case of exponentially increasing the sleep window is effective when the data traffic has a long-range dependence, but it increases complexity of the system since it must manage the sleep window and the listening interval for the respective subscriber stations.
Also, the power saving operation method shown in FIG. 8 is not efficient for traffic which has a very long interval and periodically appears.
Therefore, the above-noted method is very efficient when the traffic occurs with a fixed period, but the same may be inefficient when the self-similarity is strong in a like manner of the Internet traffic.
However, the transaction fails to provide a method for grouping the subscriber stations and managing the grouped subscriber stations for the conventional case in which the initial sleep window has no relation to the final sleep window, thus deteriorating the efficiency of management and increasing the size of a signaling message.
However, the mechanism fails to arrange the listening intervals of the subscriber station operable by the sleep mode, and requires searching the subscriber stations in the sleep state for each frame in order to indicate traffic, and has a problem when a large volume of signaling messages for indication of traffic are applied to a specific frame.

Method used

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Embodiment Construction

[0107] In the following detailed description, only the preferred embodiment of the invention has been shown and described, simply by way of illustration of the best mode contemplated by the inventor(s) of carrying out the invention. As will be realized, the invention is capable of modification in various obvious respects, all without departing from the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not restrictive. To clarify the present invention, parts which are not described in the specification are omitted, and parts for which same descriptions are provided have the same reference numerals.

[0108] With reference to drawings, a power-saving mode control method and device in a wireless portable Internet system according to an exemplary embodiment of the present invention will be described.

[0109]FIG. 9 shows a request and response process for entering a power saving mode (a sleep mode) according to an exemplary embodiment of ...

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Abstract

Disclosed is a method and device for controlling a power saving mode for applying the sleep mode for saving power consumption to the mobility of subscriber stations in a mobile communication network and a wireless Internet system. Subscriber stations entering the sleep mode are constantly grouped, listening intervals of the subscriber stations for each group are not superimposed, the existence state of traffic in the subscriber stations is independently notified for each group, and the overhead of signaling messages is minimized when the traffic is notified to the subscriber station in the sleep mode.

Description

BACKGROUND OF THE INVENTION [0001] (a) Field of the Invention [0002] The present invention relates to a power saving mode control method and device in a wireless portable Internet system. More specifically, the present invention relates to a power saving mode control method and device for using a power saving mode and a sleep mode for reducing power consumption of mobile terminals in a mobile communication system and a wireless Internet system. [0003] (b) Description of the Related Art [0004] A wireless portable Internet is a next generation communication scheme for further supporting mobility for short range data communication schemes which use fixed access points, such as the conventional wireless LAN. Various standards for the wireless portable Internet have been proposed, and the international standard of the portable Internet has progressed through the IEEE 802.16e. [0005]FIG. 1 shows a diagram of the wireless portable Internet system. [0006] As shown, the wireless portable Int...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G08C17/00H04B7/26H04W52/02
CPCH04W52/0216Y02B60/50H04W52/0219Y02D30/70H04W28/16
Inventor YOON, CHUL-SIKKIM, JAE-HEUNGYEO, KUN-MINLIM, SOON-YONGRYU, BYUNG-HAN
Owner KT CORP
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