摘要:
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.
摘要:
A method, medium, and apparatus for assuring duplicate address detection. The method includes: determining whether a predetermined packet is related to a duplicate address detection, and if the packet is determined to be related to the duplicate address detection, modifying a source address of the predetermined packet to another predetermined address different from the source address. Proper duplicate address detection can be assured even in an environment where multicast packet filtering is based on a link layer source address that follows the IEEE 802.11 standard.
摘要:
A method and an apparatus to handover a mobile node between heterogeneous networks using a mobile internet protocol (IP) is provided. The method includes: connecting a mobile node to a movement destination network; obtaining information regarding, or about, the movement destination network; generating a message including the information regarding the movement destination network; and transmitting the generated message to a correspondent node that transmits continuous data to the mobile node.
摘要:
A mobile node transmits a frame requesting IP address allocation information needed to obtain an IP address in a neighboring network; receives a frame including the IP address allocation information requested in the transmitted frame; and obtains an IP address in the neighboring network based on the IP address allocation information in the received frame to move to the neighboring network.
摘要:
A data stream transmitting and receiving method and apparatus guaranteeing quality of service (QoS), in which the data stream transmitting method includes obtaining information regarding a link characteristic change of a mobile node, which occurs due to a handover of the mobile node between heterogeneous links, and transmitting the data stream to the mobile node based on the obtained information. Accordingly, even when the handover of the mobile node between heterogeneous links is performed, QoS of the data stream can be guaranteed.
摘要:
A mobile node transmits a frame requesting IP address allocation information needed to obtain an IP address in a neighboring network; receives a frame including the IP address allocation information requested in the transmitted frame; and obtains an IP address in the neighboring network based on the IP address allocation information in the received frame to move to the neighboring network.
摘要:
A data stream transmitting and receiving method and apparatus guaranteeing quality of service (QoS), in which the data stream transmitting method includes obtaining information regarding a link characteristic change of a mobile node, which occurs due to a handover of the mobile node between heterogeneous links, and transmitting the data stream to the mobile node based on the obtained information. Accordingly, even when the handover of the mobile node between heterogeneous links is performed, QoS of the data stream can be guaranteed.
摘要:
A handover apparatus and a handover method performing a fast handover in an environment of various communication networks having different communication standards, the handover method, which is performed in a mobile node (MN) that moves between different types of networks, including determining whether a signal received from a node that connects the MN to a first type network contains network information indicating that the MN moves from the first type network to a second type network; and selectively performing a handover between the first and second type networks based on the determination results. Therefore, the MN can predict whether it moves to a new network, thereby performing a fast handover.
摘要:
An apparatus and a method to perform a fast handover that is capable of determining whether to switch an internet protocol (IP) using a received, unique code of an access router when a mobile node performs a fast handover in a wireless network. The apparatus to perform a fast handover includes a signal receiving unit to receive a signal, a subnet change determining unit to determine if a subnet change has occurred by referring to an access router identification (ID) included in the received signal, a trigger unit to perform a layer trigger depending upon the determination result as to whether a subnet change has occurred, and a handover performing unit to perform a handover according to the layer trigger.
摘要:
Provided are a system and method for deleting tunneling when a correspondent node is connected to a mobile node that has moved to a different network. The system includes a domain name service server, a mobile node that moves to a different network, a domain name dynamic updating server, and a correspondent node. The domain name service server manages domain names and address of a plurality of mobile nodes. Once the domain name dynamic update server receives a message including the created address by the mobile node, the domain name dynamic update server updates domain name and address of the mobile node that are registered in the domain name service server using the domain name and address contained in the received message. The correspondent node connects to the domain name service server, obtains the updated address of the mobile node, and transmits a packet to the mobile node using the obtained address.