Abstract:
A mobility supporting method and a mobility supporting system using the method are provided. The mobility supporting method includes a first access router for allocating a prefix to a mobile terminal, and registering the allocated prefix in an authentication server when the mobile terminal connects to the first access router. There is also the authentication server for verifying the mobile terminal based on the registered prefix, and reporting a result of the verifying of the mobile terminal to a second access router when the mobile terminal moves to connect to the second access router and the second access router for notifying the reported result of the verifying the mobile terminal to the first access router.
Abstract:
Provided is a method of generating and managing a connection identifier (CID) for supporting an IPv6 multicast in a wireless network based on IEEE 802.16 and a network interface using the method. Further provided is a network interface included in a node of IPv6-based wireless network, the network interface includes a MAC driver for storing at least one multicast CID and a MAC address of the node which is mapped in the at least one multicast CID, and a control unit for receiving a multicast message which is transmitted from a base station, and transferring the multicast message to an IP layer, when the multicast message includes the multicast CID which is stored in the MAC driver.
Abstract:
A network emulation device and method in a terminal of an IEEE 802.16 communication system supporting IPv6 communications based on a Neighbor Discovery (ND) protocol are provided. The terminal includes an IPv6 module for performing an ND mechanism to search for a neighbor terminal or a router, a MAC module for communicating based on the IEE 802.16 standard, and a network emulation module provided between the IPv6 module and the MAC module for analyzing a ND message received from the IPv6 module and discarding the ND message or generating a response message for the ND message according to the message type. The network emulation module converts a broadcast ND message to a unicast message and provides the unicast message to a corresponding network device if network information needed to internally generate the response message is not collected.
Abstract:
A method of transmitting/receiving a frame between a portable terminal and a base station in a wireless broadband Internet network are provided. More particularly, a method of transmitting/receiving frames can include activating a session between the portable terminal and the base station, removing at least one header information field included in an Internet protocol (IP) datagram after activating the session, adding a network header which sets a predetermined transport connection identifier (TCID) to the IP datagram, generating the frame, and transmitting the generated frame via the activated session. Preferably, the frame is generated in any one of the portable terminal and the base station, and transmitted to the other one of the portable terminal and the base station.
Abstract:
An apparatus and method of setting an address of a communication apparatus is provided where when an access router transmits a Router Advertisement (RA) message to the communication apparatus, the communication apparatus sets an address establishment scheme of the communication apparatus according to a first field of the RA message. The RA message includes information about the address establishment scheme, which the communication apparatus is able to use, in the first field.
Abstract:
A method and mobile terminal for allocating an Internet protocol (IP) address in a wireless network. A method of allocating an IP address in a wireless network which is applied to a system including a mobile terminal and an access router (AR) storing IP addresses, which are used on a connected link, in an address cache, managing the IP addresses, and performing a duplicate address detection (DAD) based on the IP addresses, the method including confirming whether a notification message, transmitted from the AR, is received, and automatically configuring an IP address and requesting the AR to perform the DAD with respect to the automatically configured IP address, when the notification message is received.
Abstract:
A mobile station and method for neighbor discovery are provided. The mobile station comprises a mapping table storing a connection identifier (CID) prefix and a neighbor identifier, a controller generating a CID with respect to a message that will be transmitted by referring to the mapping table, and a message transmitter transmitting, by using the CID, the message to a base station connected to the mobile station.
Abstract:
A method of configuring and registering an Internet Protocol (IPv6) address in a wireless mobile communication system having a connection-oriented radio link is provided. In an IP configuration method without Duplicate Address Detection (DAD), a Mobile Station (MS) is allocated a unique Connection Identifier (CID) specific to the MS from a serving Base Station (BS), and the MS and BS configure the IPv6 address independently using a known network prefix, a Medium Access Control (MAC) address of the MS, and the allocated CID. The BS registers the configured IPv6 address to a HA on behalf of MS.
Abstract:
A handover method of a mobile station (MS) in a mobile communication system having MSs and radio access stations (RASs), each of which includes an IEEE 802.16 standard-based medium access control (MAC) layer and an Internet protocol version 6 (IPv6)-based IP layer. The handover method includes the step of gathering IP network information of a neighbor RAS through a message exchange with a previous RAS. A target RAS for handover based on the gathered IP network information of the neighbor RAS is determined, after the target RAS is determined, the previous RAS tunnels data for targeting the MS to the target RAS, Then the tunneled data are received from the target RAS.
Abstract:
A fast handoff method of an Access Router includes receiving and storing at an Access Point a Router Advertisement message periodically sent from the Access Router to which the Access Point is connected, the Access Point being connected to at least one mobile node in wireless manner and supporting services to the at least one mobile node; generating at least one Care-of Address (CoA) at the Access Point, performing Duplicate Address detection, and storing the CoAs for which the Duplicate Address detection is successfully completed; forming, when a new mobile node enters a service-available range of the Access Point, a link to the new mobile node at the Access Point, including any of the stored CoAs in the Router Advertisement message, and sending the Router Advertisement message including the stored CoA to the new mobile node; and communicating the new mobile node to a network using the CoA included in the sent Router Advertisement message.