摘要:
A first aspect of the invention relates to a method for improving security at a local mobility anchor implementing both a network-based and a host-based mobility management scheme for managing the mobility of a mobile node. It suggests a method for verifying an attachment of a mobile node (MN) to a network element in a network. A second aspect of the invention relates to a method to be implemented in a mobility anchor node, which detects whether a race condition between registration messages occurs and resolves the most recent location of a mobile node. A third aspect of the invention relates to a method for detecting whether a binding cache entry for a mobile at a correspondent node has been spoofed and to a method for registering a care-of address of a mobile node at a correspondent node.
摘要:
A method, mobile node (MN), home agent and system for handover of a MN from a first access network supporting network-based mobility to a second access network not supporting network-based mobility in a packet switched communication network including at least the MN, a mobile access gateway (MAG), a correspondent node and a home agent. The method includes performing proxy route optimization towards the correspondent node by the MAG on behalf of the MN. Handover from the first access network to the second access network is performed when the MN moves out of the first access network. A determination is made as to whether the proxy route optimization is to be maintained after the handover, and if so, information regarding the proxy route optimization is sent to the MN by the home agent.
摘要:
To achieve this object the current invention provides a method, a mobile node, a mobile access gateway, a home agent and a communication system for handover of a mobile node between access networks either supporting network based mobility or not supporting network based mobility, in a packet switched communication network comprising at least the mobile, mobile access gateway, a correspondent node and a home agent. The method comprises the steps of performing proxy route optimization towards the correspondent node on behalf of the mobile node, performing handover from a current access network to a target access network, and determining whether the proxy route optimization is needed after the handover. If the proxy route optimization is needed after the handover, it is determined whether return routability based route optimization or home based route optimization are to be carried out, and if return routability based route optimization is to be carried out information regarding the proxy route optimization is sent to the mobile node by the home agent. If home agent based route optimization is to be carried out the method further comprises the following steps of generating and managing a route optimization state in a mobile node by the mobile node's home agent, and updating the correspondent nodes routing state with the mobile node's new location.
摘要:
The invention relates to a method for reducing the header size of data packets by removing inner headers from the data packets, wherein at least an outer header remains for routing purposes. When removing the inner headers from a data packet, a newly configured address of the receiving and/or the transmitting entity is inserted in the remaining outer header of the data packet. Context information is provided in the receiving entities for reconstructing the removed inner headers, wherein the context information is referred to by the newly configured address that is in the source and/or destination address of the outer header. The reduced data packet is transmitted with only one header, thereby significantly reducing the size of each data packet. The original packet is completely reconstructed at the receiving entity thereby allowing to proceed with the usual processing of each data packet.
摘要:
The invention relates to a method for reducing the header size of data packets exchanged between a Mobile Node (MN) and a gateway that is located between the MN and a Corresponding Node (CN). Different sort of headers are utilized between the MN and the gateway, and between the gateway and the CN. The sort of header, obtained by an optimizing procedure, allows to reduce the header size of exchanged packets on said data path section. To achieve this, a modified route optimization (RO) process is performed between the MN and the gateway, wherein the gateway acts on behalf of the CN. After completing the first RO process, the MN initiates and performs a second RO process with the gateway acting as CN. After completing both route optimization processes, data packet transmission is performed between the CN and the gateway after switching from IPsec tunnel mode to IPsec transport mode.
摘要:
The present invention describes a method for signalling to a mobility anchor point a position of a mobile node in a network using a network-based mobility management scheme for managing the mobility of the mobile node, said method comprising receiving, by a network element, from the mobile node, during or after network authentication of the mobile node, a sequence number used by a process implementing a mobile node-based mobility management scheme for managing the mobility of the mobile node, and transmitting, by the network element, to the mobility anchor point a message on a position of the mobile node in the network, wherein said message comprises the received sequence number. A common sequence number variable for BU and PBU messages is used, so that the HA is able to determine a correct transmission order of PBU/BU messages based on the sequence number in the message.
摘要:
The invention relates to a method for managing the mobility of a mobile node that moves to a different network, but keeps the same IP address. It is proposed to perform route optimization by a Proxy MIP agent on behalf of the MN, thereby shortening the data-path while allowing network-based mobility. At session setup with a correspondent node, the PCC system in the home network derides whether route optimization is to be performed for the communication session. The PMIPa requests relevant information for the route optimization, including the decision for route optimization and the addresses of MN and CN, from the PCC system in the home network, when the MN attaches to the new network area. Accordingly, route optimization is performed by using the Return Routability Procedure according to MIPv6, thereby applying the MN's IP address as Home Address, and the PMIPa's address as Care-of Address of the MN.
摘要:
Disclosed is a technique for reducing the number of event report messages sent from many communication nodes (MTC devices). Upon detecting an event (smoke detection by a smoke sensor), an MTC device A 100A sends an event report message to an MTC server 150. By receiving the event report message, the network recognizes the event detection by the MTC device, and sends a reverse event report message to a plurality of MTC devices by, for example, broadcasting. The reverse event report message instructs not to send a report message in a high priority mode even in the case of detecting the same event (smoke detection) or detecting another event (flame occurrence or the like) caused by an incident (fire occurrence) that causes the former event (smoke detection). This can suppress sending of a subsequent redundant event report message.
摘要:
The current application concerns a method, mobile node, home agent and system for route optimisation between a mobile node and at least one correspondent node in a packet switched network, wherein a route via a first home agent is redirected via a second home agent. The mobile node sends an extended home test initiation message comprising following information: authentication data, an address of the correspondent node, a first home address and a second home address. The first home agent receives the extended home test initiation message and sends an extended home test message to the second home agent, the extended home test message comprising the information from the extended home test initiation message. The second home agent receives the extended home test message and a communication is routed between the mobile node and the at least one correspondent node via the second home agent.
摘要:
The invention relates to a method for reducing the header size of data packets exchanged between a Mobile Node and its Home Agent. Different sort of headers are utilized between a Correspondent Node and the MN's HA, and between the MN and its HA. The sort of header used between the MN and its HA allows to reduce the header size of exchanged packets on said data path section, as only one header is necessary, compared to the necessity of two headers of the previous sort, used between the CN and the HA. To achieve this, a modified route optimization procedure is performed between the MN and its HA, wherein the HA participates in the RO on behalf of the CN. Thus, the RO remains transparent for the CN, while the MN thinks normal RO is happening. The invention also relates to several network entities that participate in the method.