230 results about "MIP protocol" patented technology

A mobile telephone gateway and communication routing device (MPG) (121) disclosed by the present invention is coupled through an electrical signaling transmission medium with a mobile telephone (100) operative on a first communication network in accordance with a first communication protocol, for adding communication capabilities through at least a second communication network in accordance with a second communication protocol. A mobile communication system (150) is disclosed, comprising MPG (121) placed in-between mobile phone (100) and battery (118) and Subscriber Identification Module (SIM) card (117). MPG connects to the SIM interface of mobile phone (100), using which it wraps SIM functionalities and controls call management. It connects to the data/signaling interface of mobile phone (100), using which it communicates with it, while communicating with the second network using another communication means. It may optionally connects to an accessory device interface of mobile phone (100) such as a Terminal Adapter/Terminal Equipment (TA/TE) or a USB OTG interface, thereby enabling communication between the mobile phone and wireless data terminals of the second network. In a preferred embodiment of the present invention, a MPG is provided for use with a mobile phone operative on a mobile communication network such as GSM, adding communication capabilities through a wireless communication network such as Bluetooth or Wi-Fi. Furthermore, gateway applications are provided to facilitate or support communication through at least the second network in accordance with mobile web protocols and technologies such as Mobile IP, mobile SIP, and mobile VoIP.

Method and apparatus for establishing a tunnel between a mobile node and a routing device. The method includes the steps of utilizing the mobile node to place a call over a cellular network and gaining access to a foreign agent of the cellular network. A Mobile IP link is established between the foreign agent and a home agent and the call is authenticated. A tunnel is initiated between the home agent and the routing device and call data is tunneled between the home agent and the routing device.

In a mobile communication system utilizing Mobile IP, information on the access network is exchanged between access routers. And when a mobile terminal performs a handover, the previously exchanged information on the neighbor access routers and the access network information are provided to the mobile terminal. By so doing, the mobile terminal can determine a destination access router in advance, enabling to realize an efficient handover processing.

A protocol that enables an 802 mobile host to obtain a “home IP address,” and other configuration parameters via DHCP or BOOTP, while attached to either its home subnet or a foreign subnet. Inner and outer encapsulation headers are used to forward DHCP messages from a DHCP server outbound through a “forward tunnel,” to a mobile host on a foreign subnet and are also used to forward DHCP messages from a mobile host on a foreign subnet inbound through a “reverse tunnel” to the home subnet. A mobile host must add an inner encapsulation header to inbound DHCP packets with the source IP address set to 0 to indicate that the packet is from a mobile host that does not have a registered home IP address. Outer encapsulation headers contain the home address and the care-of address for the mobile host.

Systems, methods, and instrumentalities are disclosed that provide coordination between MPTCP and mobile IP (MIP). An MPTCP session may be established between a mobile node and a correspondent node. MIP and simple IP subflows may be established in the MPTCP session. The mobile node may activate MIP and establish a first subflow via MIP. The first subflow may be associated with a first path that may be routed through a first home agent. The mobile node may deactivate MIP and establish a second subflow via simple internet protocol (IP). The second subflow may be associated with a second path that is not routed through a home agent.

In the preferred embodiments, a system and/or method is disclosed for performing an MPA proactive handover of a mobile node in a Mobile IP scenario which includes, employing a care-of address assigned by a previous foreign agent (pFA-CoA) as a mobile node's tunnel outer address of a forward proactive handover tunnel from a new foreign agent to the mobile node.

There is provided a handover method for a mobile node (MN) having a mobile IP (Internet Protocol) address in a mobile communication system. When a handover occurs as the MN moves from the area of a first FA to the area of a second FA adjacent to the first FA, the second FA transmits a Binding Update message including the IP address of the second FA and an acknowledgement request to the first FA. In response to the Binding Update message, the first FA transmits a Binding Acknowledge message to the second FA, including a field indicative of the IP tunneling capability of a router connected to a corresponding node (CN) to which the MN connects a call.

A basic feature of the invention is to rely on an AAA infrastructure to “bootstrap” the HMIPv6 service for a mobile node (130) that “roams” in a visited network or the home network. In accordance with a preferred embodiment of the invention, bootstrapping the HMIPv6 service involves authenticating and authorizing the mobile node (130) for HMIPv6 service based on an AAA infrastructure. In an important scenario, the mobile node is roaming in a visited network, and the AAA infrastructure (110, 120, 122) links the visited network with the home network of the mobile node. The invention also supports the possibility of having the MAP (125) located in the home network or other network than the visited network. The reliance on the AAA infrastructure preferably involves transferring HMIPv6-related information required for authenticating and authorizing the mobile node for HMIPv6 service over the AAA infrastructure.

Methods and apparatus for supporting a session in Mobile IP are disclosed. A Mobile Node sends a first Mobile IP message identifying the Mobile Node to a Home Agent, wherein the first Mobile IP message indicates to the Home Agent that the Mobile Node is requesting dynamic configuration of a Mobile-Home authentication key to be shared between the Mobile Node and the Home Agent during the session. A Mobile-Home authentication key to be shared between the Home Agent and the Mobile Node is obtained or generated by the Mobile Node and the Home Agent, where the Mobile-Home authentication key is not valid after the session has ended or during another session. The Home Agent allocates a home address to the Mobile Node for the session. The Home Agent then sends a second Mobile IP message to the Mobile Node, the second Mobile IP message including the allocated home address for the session and a lifetime associated with the session, wherein the lifetime indicates a lifetime of the key, thereby enabling the Mobile Node to register with the Home Agent using the allocated home address and the Mobile-Home authentication key to be shared between the Home Agent and the Mobile Node during the session for the allocated home address.

A system for handing off a mobile node includes a mobile node and a target agent. The mobile node can communicate with an anchor agent, and can also be handed off from the anchor agent. The mobile node can establish a physical-layer connection between the mobile node and a target base station associated with the target agent. Also, the target agent can establish a tunnel between the target agent and the anchor agent. Thereafter, the mobile node can establish a link-layer connection between the mobile node and the target agent via the anchor agent and the tunnel. Then, the mobile node can register with the target agent to thereby bind the mobile node to the target agent such that data packet(s) pass through the target agent, across the link-layer connection and the physical-layer connection, and independent of the anchor agent and the tunnel.

In a Multi-Protocol Label Switching (MPLS) network and a method of applying a mobile IP to the MPLS network, the method includes: performing label assignment using a label-tunnel configured by doubly stacking a label between a first edge router and a second edge router upon a Mobile Node (MN) moving from a position of the first edge router to a position of the second edge router; and including label mapping information based on the assigned label in a registration request message in the second edge router, and transmitting the included label mapping information from the second edge router to the first edge router.

Methods and apparatus for dynamically generating a set of Mobile IP keys are disclosed. The set of Mobile IP keys is dynamically generated using an existing HLR/AuC authentication infrastructure. This is accomplished, in part, by obtaining an International Mobile Subscriber Identity (IMSI) that uniquely identifies a particular Mobile Node. Once a set of Mobile IP keys is generated from authentication information associated with the IMSI, the Mobile Node may register with its Home Agent using the set of Mobile IP keys.

Methods and apparatus for supporting the management of mobility and addresses by a Customer Premises Edge (CPE) router in a Mobile IP environment are disclosed. When a network prefix is allocated by a DHCP router to the CPE router, the CPE router divides the network prefix among its interfaces, and allocates home addresses to Mobile Nodes connected to its interfaces, as appropriate. The CPE router also assists in performing Duplicate Address Detection (DAD) to ensure that a home address that has been allocated has not already been assigned to another node. Upon completion of registration of a Mobile Node that is connected to one of the interfaces of the CPE router with its Home Agent, the CPE router assists in routing traffic to the Mobile Node. In addition, the CPE router assists in notifying nodes when one of the Mobile Nodes has moved, as well as when one of the Mobile Nodes has de-registered with the Home Agent.

A new extensions structure for mobile IP control message extensions is employed to conserve the type field. Certain types of extensions, such as network access identifiers, are initially aggregated and subtypes are employed to identify the precise content of the extension (e.g., mobile node network access identifier, home agent network access identifier, foreign agent network access identifier, etc.). Long and short formats for the new extension structure are defined, with the long format applicable to nonskippable extensions carrying more than 256 bytes and the short format backwards compatible with currently defined skippable extensions with less than 256 bytes of data. This will greatly reduce usage of the type field.

A system for handing off a mobile node includes a mobile node and a target foreign agent. To effectuate a handoff of the mobile node from an anchor foreign agent to the target foreign agent, a tunnel can be established therebetween such that data packet(s) sent between the mobile node and a correspondent node pass between the target foreign agent and the anchor foreign agent through the tunnel. After the tunnel is established, the mobile node can register with the target foreign agent to thereby bind the mobile node to the target foreign agent such that data packet(s) sent between the mobile node and the correspondent node pass through the target foreign agent to the correspondent node independent of the anchor foreign agent and the tunnel. Thereafter, the target foreign agent can close the tunnel between the target foreign agent and the anchor foreign agent.

A mobile agent device in a Mobile Virtual Private Network, said device comprising: termination of Mobile IP tunnel (6) from a remotely connecting Mobile Node (1); termination of an IPSec VPN tunnel (7) from the remotely connecting Mobile Node; dynamic Selection of Internal Mobile IP Home Agent based on user Authentication; tunneling of traffic to and/or from the assigned Internal Mobile Home Agent for this Mobile Node; and, provision of extended authentication, after Mobile IP connection establishment, and during the VPN negotiation phase, based on extra user credentials, one-time-password mechanism or similar.

A communication method and apparatus using the IP address of a gateway for an MN in a VPN are provided. When the MN is to access the VPN, the gateway acting an FA in the VPN performs a Mobile IP registration on behalf of the MN and is allocated a HoA for the MN from an HA. Therefore, the number of addresses required for the Mobile IP registration of the MN is reduced and overlap between an IP-in-IP tunnel for Mobile Internet and an IPsec tunnel for the VPN is avoided. As a result, packet transmission overhead is reduced.

A routing method for routing data packets from a source terminal to a destination terminal via at least one communication network, said at least one communication network comprising at least one mobility agent entity for each of said terminals, the method comprising the steps of: establishing a route from the source via at least one first mobility agent, at least two consecutively arranged second mobility agents, to said destination, deciding that said route is to be optimized, rerouting said route from one of said at least one first mobility agents directly to one of the at least two consecutively arranged second mobility agents such that at least one intermediate mobility agent in said route is bypassed in the resulting rerouted route.

A method of delegating responsibility for an IP address owned by a first IP network node to a second IP network node, at least a part of the IP address being derivable from a public key of a public/private key pair belonging to the first node. The method comprises notifying the first node of a public key of a public/private key pair belonging to the second node, at the first node, signing the public key of the second node with the private key of the first node to provide an authorisation certificate, and sending the authorisation certificate from the first node to the second node, wherein the authorisation certificate is subsequently included with messages relating to said IP address and signed with the private key of the second node, sent from the second node to receiving nodes, and is used by the receiving nodes to verify the second node's claim on the IP address.

The present invention provides a method and an apparatus for providing radio access in a communication system by inter-working between at least two packet-based networks, such as heterogeneous cellular networks including a cellular network and an Internet Protocol (IP)-based wireless data network. The method includes enabling a packet routing path across the cellular and wireless data networks to provide a quality of service metric and an indication for mobility information associated with a user of a mobile device. The method further comprises transferring the quality of service metric and the indication for mobility information on the packet routing path in response to a service request across the networks. To provide wireless radio access, an IP-based communication system may use a wireless router, such as a base station router (BSR) and an inter-working unit. The inter-working unit may enable a packet routing path to provide a Quality of Service (QoS) metric and an indication for mobility information, such as mobility context information, associated with a user of a mobile device. In this way, instead of using a Mobile-IP client of the mobile device, the inter-working unit may provide radio access to the cellular network and the wireless data network using the wireless router.

A mobile communication apparatus includes a mobile IP/Fast Mobile IP processing part, an access router searching part for acquiring information on access router apparatuses, a Fast Mobile IP compliance determining part for determining whether the access router apparatuses comply with Fast Mobile IP, and a Fast Mobile IP control part for controlling the contents of a message produced by the mobile IP/Fast Mobile IP processing part. In this way, even if one of the access router apparatuses does not comply with Fast Mobile IP, the procedure of Fast Mobile IP can be implemented, thereby reducing packet loss.

A method is disclosed, by which a local mobility anchor (LMA) In a proxy mobile IP network can perform address assignment for a mobile node in cooperation with network address translation, so that the mobile node can be configured with a private HoA. In one embodiment, the LMA obtains the NAI of a mobile node (MN) that is: (i) operating as an IPv4 host and (ii) seeking entry to the network as its home network. The LMA identifies a DHCP server located in the network and serving at least one NAT, and sends it a request message in which the ClientId is set equal to the NAI of the mobile node. The LMA receives a private HoA from the DHCP server, which it forwards in a PBA message to a mobile access gateway (MAG) connected to the MN.