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Handover method and apparatus using handover history

A technology of history and equipment, applied in the field of handover, can solve problems such as service quality deterioration

Inactive Publication Date: 2008-04-02
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, when implementing data communication in which real-time based data transmission is important, such as Voice over Internet Protocol (VoIP), the delay occurring in the AP scanning process can cause significant quality of service (QoS) degradation. deterioration

Method used

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  • Handover method and apparatus using handover history
  • Handover method and apparatus using handover history
  • Handover method and apparatus using handover history

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Embodiment Construction

[0036] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0037] FIG. 3 is a diagram illustrating a handover history according to an exemplary embodiment of the present invention.

[0038] Referring to FIG. 3 , regarding the handover previously performed by the MS, its handover history includes information on APs before handover is performed and channel information on APs scanned after handover is performed.

[0039] Specifically, FIG. 3 shows the handover history created when the handover is repeatedly performed for A, B, and C, which are the SSID of the first AP11, the SSID of the second AP12, and the third AP12, respectively, in this order. SSID of the AP (not shown). Handover from the first AP 11 to the second AP 12 is performed first, and then handover from the second AP 12 to the third AP is performed.

[0040] Regarding the handover previously performed by the MS, the Prev_AP informati...

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Abstract

A handover method and apparatus are provided. The handover method of a mobile station (MS) moving from a network of a first access point (AP) to a network of a second AP includes scanning the second AP through a specific channel according to a handover history registered in the MS; and associating the MS with the second AP according to a result obtained from the scanning. Accordingly, a time delay occurring in the process of scanning an AP is minimized, thereby avoiding data loss of a service requiring real-time based data transmission.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2006-0094339 filed with the Korean Intellectual Property Office on Sep. 27, 2006, which is hereby incorporated by reference in its entirety. technical field [0002] Methods and apparatus consistent with the present invention relate to handovers and, more particularly, to providing fast access point scanning when handovers are performed in a wireless local area network (WLAN) environment. Background technique [0003] The rapid growth of mobile communication service subscribers and the growth of mobile communication services supporting multimedia communication have caused users' demands for seamless communication services while on the move. Therefore, handover performed in a WLAN environment becomes very important. [0004] Figure 1 shows a handover scheme in a prior art WLAN environment. [0005] Referring to FIG. 1 , a WLAN environment includes: a mobile station (MS) 10 , a first access point (A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04L12/28H04W36/08H04W84/12
CPCH04W36/08H04W84/12H04W36/008375
Inventor 李根宰南相秀
Owner SAMSUNG ELECTRONICS CO LTD