Method and apparatus for acquiring IP address in DHCP environment
AssigneeSamsung Electronics Co., Ltd.
InventorsSoo-hong Park, Pyung-soo Kim, Young-keun Kim
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Abstract
An apparatus for and method of acquiring an address in a Dynamic Host Configuration Protocol (DHCP) environment in a wireless LAN. The method includes: sensing that a mobile node has moved from a first network to a second network; transmitting a frame requesting association with the second network to an access point managing the second network after sensing that the mobile node has moved from the first network to the second network; and receiving a message containing an address assigned to the mobile node from the access point having received the transmitted frame. Accordingly, the mobile node can promptly acquire an IP address without an additional request.
Claims19
A method of acquiring an address, comprising:
- sensing that a mobile node has moved from a first network to a second network;
- transmitting a frame requesting association with the second network to an access point managing the second network after sensing that the mobile node has moved from the first network to the second network;
- and
- receiving a message containing an address assigned to the mobile node from the access point having received the transmitted frame.
A mobile node comprising:
- a network change sensing unit sensing when the mobile node has moved from a first network to a second network;
- a frame transmitting unit transmitting a frame requesting association with the second network to an access point managing the second network when the network change sensing unit senses that the mobile node has moved from the first network to the second network;
- and
- a message receiving unit receiving a message containing an address assigned to the mobile node from the access point having received the frame transmitted by the frame transmitting unit.
A computer-readable recording medium having embodied thereon a computer program for a method of acquiring an address, the method comprising:
- sensing that a mobile node moves from a first network to a second network;
- transmitting a frame requesting association with the second network to an access point managing the second network after sensing that the mobile node has moved from the first network to the second network;
- and
- receiving a message containing an address assigned to the mobile node from the access point having received the transmitted frame.
A method of providing an address, comprising:
- receiving a frame requesting association with a second network from a mobile node which has moved from a first network to the second network;
- assigning an address of the second network to the mobile node when the frame is received;
- and
- transmitting a message containing the assigned address to the mobile node.
An access point comprising:
- a frame receiving unit receiving a frame requesting association with a second network from a mobile node which has moved from a first network to the second network;
- an address assigning unit assigning an address of the second network to the mobile node when the frame receiving unit receives the frame;
- and
- a message transmitting unit transmitting a message containing the address assigned by the address assigning unit to the mobile node.
A computer-readable recording medium having embodied thereon a computer program for a method of acquiring an address, the method comprising:
- receiving a frame requesting association with a second network from a mobile node which has moved from a first network to the second network;
- assigning an address of the second network to the mobile node when the frame is received;
- and
- transmitting a message containing the assigned address to the mobile node.
A communication system comprising:
- a mobile node sensing when the mobile node has moved from a first network to a second network and transmitting a frame requesting association with the second network to an access point managing the second network when the mobile node has sensed that the mobile node has moved from the first network to the second network;
- and
- an access point assigning an address of the second network to the mobile node in response to the frame received from the mobile node and transmitting a message containing the assigned address to the mobile node.
A method of providing network information, comprising:
- sensing a change of information about a specified network;
- and
- transmitting a message including the changed information to a client when the change is sensed.
A computer-readable recording medium having embodied thereon a computer program for a method of providing network information, the method comprising:
- sensing a change of information about a specified network;
- and
- transmitting a message including the changed information to a client when the change is sensed.
Dependencies are inferred from the claim text.