Handover method and device for mobile node in wireless LAN
First Claim
Patent Images
1. A handover method in a wireless LAN environment, comprising:
- a) scanning beacon signals transmitted from neighboring access routers to a mobile node;
b) predicting a new access router (NAR) based on the beacon scanning results;
c) obtaining information on the predicted NAR before an L2 trigger of a link layer occurs; and
d) carrying out binding update using the information on the predicted NAR when the L2 trigger of the link layer occurs.
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Abstract
A handover method and a handover device for a mobile node in a wireless LAN environment are provided. The handover method involves a) scanning beacon signals transmitted from neighboring access routers while a mobile node moves from place to place; b) predicting a new access router (NAR) based on the beacon scanning results; c) obtaining information on the predicted NAR before an L2 trigger of a link layer occurs; and d) carrying out binding update using the information on the predicted NAR when the L2 trigger of the link layer occurs.
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Citations
9 Claims
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1. A handover method in a wireless LAN environment, comprising:
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a) scanning beacon signals transmitted from neighboring access routers to a mobile node;
b) predicting a new access router (NAR) based on the beacon scanning results;
c) obtaining information on the predicted NAR before an L2 trigger of a link layer occurs; and
d) carrying out binding update using the information on the predicted NAR when the L2 trigger of the link layer occurs. - View Dependent Claims (2, 3, 4)
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5. A handover device for a mobile node in a wireless LAN environment, the device comprising:
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a beacon scanning unit which scans beacon signals transmitted from access routers adjacent to a mobile node;
a NAR prediction unit which predicts a NAR based on the beacon scanning results;
a preprocessing unit which obtains information on the NAR, predicted by the NAR prediction unit, before an L2 trigger of a link layer occurs;
a NAR information storing unit which stores the information on the NAR, obtained by the preprocessing unit; and
a binding update processing unit which carries out binding update using the information of the NAR, stored in the NAR information storing unit, when the L2 trigger of the link layer occurs. - View Dependent Claims (6, 7, 8)
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9. A computer-readable recording medium on which a program enabling a handover method is written, the handover method comprising:
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a) scanning beacon signals transmitted from neighboring access routers to a mobile node;
b) predicting a new access router (NAR) based on the beacon scanning results;
c) obtaining information on the predicted NAR before an L2 trigger of a link layer occurs; and
d) carrying out binding update using the information on the predicted NAR when the L2 trigger of the link layer occurs.
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Specification