Method and apparatus of performing handover using subnet information
AssigneeSamsung Electronics Co., Ltd.
InventorSoo-hong Park
Life of this patent
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Abstract
A method of performing handover using subnet information includes: comparing subnet information for the current PoA with subnet information for the new PoA; and determining a layer in which handover is performed, according to whether the subnet information for the current PoA is equal to the subnet information for the new PoA, and performing handover in the determined layer. By comparing subnet information received before a mobile node moves with subnet information received after the mobile node moves, and thus quickly determining whether a change between subnets occurs, and by determining a layer in which handover is performed on the basis of the determination result, it is possible to efficiently perform handover.
Claims28
A method of performing handover in a mobile node from a current Point of Attachment (PoA) to a new PoA, comprising:
- comparing subnet information for the current PoA with subnet information for the new PoA;
- and
- determining a layer selected from a plurality of layers in which a handover is performed, according to whether the subnet information for the current PoA matches the subnet information for the new PoA;
- and
- performing the handover in the determined layer.
An apparatus for allowing a mobile node to perform handover from a current Point of Attachment (PoA) to a new PoA, comprising:
- a subnet information comparator comparing subnet information for the current PoA with subnet information for the new PoA;
- a layer determining unit determining a layer selected from a plurality of layers in which a handover is performed, according to whether the subnet information for the current PoA matches the subnet information for the new PoA;
- and
- a message transmitter transmitting a message for performing the handover to the determined layer in which handover is performed.
A computer readable recording medium having embodied thereon a computer program for executing a handover performing method performed by a computer, the method comprising:
- comparing subnet information for a current Point of Attachment (PoA) of a mobile node with subnet information for a new PoA of the mobile node;
- and
- determining a layer selected from a plurality of layers in which a handover is performed and performing the handover, according to whether the subnet information for the current PoA matches the subnet information for the new PoA and performing handover in the determined layer.
A method of performing handover in a mobile node, comprising:
- comparing received subnet information received at the mobile node with stored subnet information stored in the mobile node;
- performing a lower layer handover at a lower layer of the mobile node where the received subnet information matches the stored subnet information;
- and
- performing an upper layer handover at an upper layer of the mobile node where the received subnet information does not match the stored subnet information.
A mobile wireless apparatus, comprising:
- a transmitter/receiver to transmit and receive wireless data with respect to one or more external networks and to receive subnet information;
- a memory to store subnet information;
- and
- a handover layer performing unit to compare the received subnet information with the stored subnet information, to perform a lower layer handover at a lower layer of the mobile apparatus where the received subnet information matches the stored subnet information, and to perform an upper layer handover at an upper layer of the mobile apparatus where the received subnet information does not match the stored subnet information.
The mobile wireless system comprising:
- a first point of attachment (PoA) connected to a first information server storing first subnet information;
- a second point of attachment (PoA) connected to a second information server storing second subnet information;
- and
- a mobile apparatus having:
- a receiver which receives wireless data including the second subnet information transmitted from the second information server while moving between the first and second PoA;
- a memory to store the first subnet information;
- and
- a handover layer performing unit to compare the received second subnet information with the stored first subnet information, to perform a lower layer handover at a lower layer of the mobile apparatus where the received second subnet information matches the stored first subnet information, and to perform an upper layer handover at an upper layer of the mobile apparatus where the received second subnet information does not match the stored first subnet information.
Dependencies are inferred from the claim text.