Wireless local area network system capable of supporting host mobility and an operation method therefor
First Claim
1. A wireless local area network system, comprising:
- a gateway performing functions of a home agent in a mobile wireless communication environment and sending prefix information; and
one or more access points, each access point allocating an Internet Protocol (IP) address to a mobile host in a management range thereof by using the prefix information of the gateway,wherein said each access point produces and sends a Binding Update list corresponding to the mobile host to the gateway,wherein when said mobile host moves into a range of a different access point associated with a new access router, said mobile host retains the prefix information of the gateway,wherein the new access router generates an access router advertisement message based on a prefix advertisement message received from the gateway and sends the generated access router advertisement message to said different access point,wherein said different access point extracts the prefix information of the gateway based on the access router advertisement message and transfers the extracted prefix information to the mobile host;
wherein the mobile host receives the prefix information of the gateway and retains the received prefix information, andwherein respective mobile hosts in networks controlled by the gateway have a same prefix in addition to a mobile host ID, said mobile host ID being a media access control (MAC) address, andwherein said each access point allocates a unique IP address for each mobile host in all the networks controlled by the gateway by combining the prefix information received from the gateway with the mobile host ID received from the mobile host.
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Abstract
A wireless local area network system capable of supporting host mobility services and an operation method therefor. The wireless local area network system includes a gateway performing the functions of a home agent in mobile wireless communication environments and sending prefix information; and access points, each access point allocating an Internet Protocol (IP) address to a mobile host within a range thereof by using prefix information of the gateway. Thereafter, each access point produces and sends a Binding Update list that corresponds to the mobile hosts to the gateway. Thus, the present invention supports the mobility for mobile hosts with or without a mobile IPv6 stack, in a wireless local area network.
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Citations
16 Claims
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1. A wireless local area network system, comprising:
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a gateway performing functions of a home agent in a mobile wireless communication environment and sending prefix information; and one or more access points, each access point allocating an Internet Protocol (IP) address to a mobile host in a management range thereof by using the prefix information of the gateway, wherein said each access point produces and sends a Binding Update list corresponding to the mobile host to the gateway, wherein when said mobile host moves into a range of a different access point associated with a new access router, said mobile host retains the prefix information of the gateway, wherein the new access router generates an access router advertisement message based on a prefix advertisement message received from the gateway and sends the generated access router advertisement message to said different access point, wherein said different access point extracts the prefix information of the gateway based on the access router advertisement message and transfers the extracted prefix information to the mobile host; wherein the mobile host receives the prefix information of the gateway and retains the received prefix information, and wherein respective mobile hosts in networks controlled by the gateway have a same prefix in addition to a mobile host ID, said mobile host ID being a media access control (MAC) address, and wherein said each access point allocates a unique IP address for each mobile host in all the networks controlled by the gateway by combining the prefix information received from the gateway with the mobile host ID received from the mobile host. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An operation method for a wireless local area network system, comprising:
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sending prefix information of a gateway, by the gateway, according to a request of a mobile host wherein the gateway performs functions of a home agent in a mobile wireless communication environment; allocating an Internet Protocol (IP) address to the mobile host by using the prefix information; associating the mobile host with an access point having a management range within which the mobile host is located; producing a Binding Update list for the associated mobile host; and sending the Binding Update list to the gateway, wherein when said mobile host moves into a range of a different access point associated with a new access router, said mobile host retains the prefix information of the gateway, wherein the new access router generates an access router advertisement message based on a prefix advertisement message received from the gateway and sends the generated access router advertisement message to said different access point, wherein said different access point extracts the prefix information of the gateway based on the access router advertisement message and transfers the extracted prefix information to the mobile host;
wherein the mobile host receives the prefix information of the gateway and retains the received prefix information, andwherein respective mobile hosts in networks controlled by the gateway have a same prefix in addition to a mobile host ID, said mobile host ID being a media access control (MAC) address, wherein said access point allocates a unique IP address for each mobile host in all the networks controlled by the gateway by combining the prefix information received from the gateway with the mobile host ID received from the mobile host, and allocates the unique IP address to the mobile host. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification