Abstract: A method for mobile node operations includes communicating with a first point of attachment in a first radio network through a radio interface tuned to the first radio network, and encapsulating a first frame in a second radio network format within a media independent control frame. The method also includes transmitting the media independent control frame with the first frame in the second radio network format encapsulated therein to a second point of attachment in a second radio network using the radio interface tuned to the first radio network.

Abstract: Provided are a device and method for performing handover by detecting a state of another wireless network when only a wireless access interface for a current access network is activated in a mobile terminal. A handover controller performs communication between a mobile terminal performing a single radio handover and an information server managing access information for each wireless network. The handover controller obtains multi RAT access information used for accessing a network accessible at a current position of the mobile terminal. The handover controller obtains a network quality measurement result, which is measured using the multi RAT access information, from the mobile terminal, and determines a target network of the mobile terminal by using the network quality measurement result.

Abstract: A method for mobile node operations includes communicating with a first point of attachment in a first radio network through a radio interface tuned to the first radio network, and encapsulating a first frame in a second radio network format within a media independent control frame. The method also includes transmitting the media independent control frame with the first frame in the second radio network format encapsulated therein to a second point of attachment in a second radio network using the radio interface tuned to the first radio network.

Abstract: The present invention relates to a method in which a mobile node having mobility performs handover in a mobile communication system, and more particularly, to a fast handover method and system using network-based localized mobility management. According to an exemplary embodiment of the present invention, in a network access process between a mobile node and a base station, the base station sends a message allowing network access to the mobile node and a link-up message to an access router. Then, the access router sends a location registration message, which includes a mobile node identifier, a target base station identifier, a localized mobility anchor identifier, and access permission flag information, to a localized mobility anchor (LMA), and receives an acknowledgement (Ack) message including network prefix information. Accordingly, when a router advertisement (RA) message is sent to the base station, the mobile node performs duplicate address detection (DAD).

Abstract: A system and method for single radio handovers are provided. A method for controller operations includes receiving a first message from a mobile node. The first message is transported in a first network. The method also includes transforming the first message into a second message. The second message is to be transported in a second network. The method further includes sending the second message to a point of access in the second network. The point of access is a target point of access for the mobile node in a single radio handover.

Abstract: Provided is a fast handover method using candidate care-of addresses (CoAs). The method includes obtaining Internet protocol (IP) address information of access routers located adjacent to a previous access router (PAR) to which a mobile node is connected; setting more than one candidate CoAs based on the IP address information; and selecting from the more than one candidate CoAs a CoA of a sub-net to which the mobile node is to move and performing a handover based on the selected CoA. Therefore, a delay and a packet loss caused by the setting of a new NCoAs can be prevented.

Abstract: The present invention relates to a method for supporting Internet Protocol version 6 (IPv6) in a wireless communication system. According to an exemplary embodiment of the present invention, a wireless communication system consists of an access router, a bridge, and a base station. The access router allocates a common network prefix to all subscriber stations served by it. When receiving IP multicast data destined for all nodes on the same link, the access router forwards the data back to the bridge. The bridge transmits IP multicast data with reference to an identification cache table (ICT) which includes MAC addresses of each subscriber stations, identifiers for point-to-point connections between the bridge and base station, IPv6 addresses of each subscriber station and valid flags for the IPv6 addresses. The base station provides point-to-point connections to both the bridge and each of subscriber stations.

Abstract: The present invention relates to a method in which a mobile node having mobility performs handover in a mobile communication system, and more particularly, to a fast handover method and system using network-based localized mobility Management. According to an exemplary embodiment of the present invention, in a network access process between a mobile node and a base station, the base station sends a message allowing network access to the mobile node and a link-up message to an access router. Then, the access router sends a location registration message, which includes a mobile node identifier, a target base station identifier, a localized mobility anchor identifier, and access permission flag information, to a localized mobility anchor (LMA), and receives an acknowledgement (Ack) message including network prefix information. Accordingly, when a router advertisement (RA) message is sent to the base station, the mobile node performs duplicate address detection (DAD).

Abstract: A service providing method and apparatus provides a service for a media independent handover (MIH). A first node receives a first message from a second node, the first message including information about whether the second node supports a service through first layer and whether the second node supports a service through second layer, and the first node selects a service transport layer for providing a service from the first and second layers and provides a service to the second node through the service transport layer. Accordingly, the first node may effectively perform an MIH because it may easily understand the MIH capability of the second node.

Abstract: A network apparatus and packet routing method for ubiquitous computing are provided. In the network apparatus, a movement detection unit detects movement from a first network to a second network, and a movement address setting unit generates care-of-address (CoA) information corresponding to prefix information of the second network. A movement registration unit registers a movement address by transmitting a binding update message containing the generated CoA and home address (HoA) mapping information, to a home agent. A resource setting unit registers information on current terminal apparatuses among network terminal apparatuses on the second network. A packet distribution unit distributes the received packet to a current terminal apparatus corresponding to the application characteristic of the packet received from the home agent based on the information on the current terminal apparatuses.

Abstract: Provided are a method and system for supporting IPv6 Neighbor Discovery in a point-to-point oriented broadband wireless network. The method includes: an access router in the broadband wireless network receiving a message from a first subscriber station in the broadband wireless network; the access router detecting a Neighbor Discovery message from the received message; and the access router relaying the Neighbor Discovery message to a second subscriber station in the broadband wireless network. The method can support IPv6 Neighbor Discovery where hosts in the point-to-point oriented broadband wireless network share one or multiple prefixes.

Abstract: Provided is a method of packet forwarding over partial mesh network to avoid packet loss during handover. The method includes: based on first trigger information of a layer 2 obtained when a mobile node (MN) moves from a domain of a currently connected first BS to another domain, expecting a second BS of the domain to which the MN moves; if the first BS acquires second trigger information of the layer 2 indicating a disconnection between the first BS and the MN, forwarding packets destined for the MN to the second BS through the links; and if the second BS buffers the packets forwarded from the first BS and third trigger information of the layer 2 indicating a connection between the second BS and the MN, transferring the buffered packets to the MN.

Abstract: The present invention relates to method supporting an IPv6 neighbor discovery in an IEEE 802.16 based wireless communication system. More specifically, the invention relates to an IPv6 (Internet Protocol version 6) neighbor discovery support method in a wireless communication system where all attached subscriber stations share a common network prefix, particularly, in an IEEE 802.16 network using Ethernet CS (convergence sublayer) network. According to the above-described method, a base station manages information on subscriber stations to which the base station provides a service on the basis of an Identification Cache Table (ICT), and performs a process of controlling unnecessary transmission of IPv6 neighbor discovery messages and an IPv6 neighbor discovery proxy function on the basis of the information on the subscriber station.