摘要:
A User Equipment (UE) that is simultaneously connected (via a 3G connection and a non-3G connection) to a Packet Data Network Gateway (P-GW) can direct how traffic flows would be routed from the P-GW to the UE. Typically, the P-GW would setup the 3G communication path to the UE when it receives a downlink data packet directed to the UE's 3G path. If the P-GW uses such logic for setting a communication path to the UE without knowing the user's actual intention, this might result in the case where the user would experience some service degradation for ongoing session. In addition, it is possible that the packets filters for a first UE interface are not utilized due to the erroneous setting of the packets filters for a second UE interface. To resolve this issue, the UE would indicate to the P-GW of the user's intention for communication path setup with the benefit of conserving the UE's battery.
摘要:
Disclosed is a technique allowing a communication terminal, even after a handover between different types of networks, to determine whether a communication that was in progress in an access network connected before the handover can be resumed or not. In order to receive an incoming CS call during a connection to a PS domain (E-UTRAN 101), a user terminal (UE 100) has to connect to a CS domain (UTRAN 102). When the UE has a LIPA (local IP address) in the PS domain, for example, the UE may not continue LIPA traffic in the CS domain after the CS call. In the present invention, a network performs buffering of LIPA traffic for certain duration, for example, and informs the UE of this condition, whereby the UE can securely determine whether the LIPA traffic is still kept after the CS call.
摘要:
A mobile communication terminal apparatus and a control method thereof wherein a smooth handoff can be quickly achieved in a seamless manner during a roaming between data communication networks of different packet exchange systems. A mobile communication terminal apparatus (100) comprising a network access unit (NAU) (101) having a network access mechanism that has been uniquely established by adjusting the specifications of hardware, software and protocols; and a MADU (Multiple Access Decision Unit) (103) that uses a set of interfaces to exchange information with the NAU (101), thereby deciding a channel to be used in a communication session, and that controls the NAU (101) corresponding to the decided channel; wherein the mobile communication terminal apparatus performs a roaming between data communication networks of different packet exchange systems.
摘要:
In order to verify if upper-level router information, or ULRI (information on the upper-level router with respect to a predetermined node) is valid, MN (Mobile Node) 220 associated to ULMR (Upper-Level Mobile Router) 210 acquires ULRI such as the address of ULMR (310), inserts ULRI into a BU (Binding Update) message, and sends it to HA (Home Agent) 235 (320). On receiving the BU message with ULRI, HA sends a BA (Binding Acknowledgement) message set to pass through the router that is specified in ULRI (330). If ULRI is valid, ULMR forwards the BA message to MN (340). If ULRI is not valid, ULMR discards the BA message.
摘要:
A technology is disclosed for certainly performing dynamic routing and error checking processes in the mobile network. According to this technology, the home agent sets up a Binding Acknowledgement message with a smaller Lifetime value when receiving a Binding Update message from a mobile router. During this smaller Lifetime, the mobile router can send a Routing Update message to the home agent. Thus, the home agent, for example, can check consistency of prefix information specified in the Biding Update with route installed by the Routing Update message. The present invention can be applied to both two distinct modes (explicit mode and implicit mode) that prefix information is specified in the Binding Update or not.
摘要:
A technology is disclosed for certainly performing dynamic routing and error checking processes in the mobile network. According to this technology, the home agent sets up a Binding Acknowledgement message with a smaller Lifetime value when receiving a Binding Update message from a mobile router. During this smaller Lifetime, the mobile router can send a Routing Update message to the home agent. Thus, the home agent, for example, can check consistency of prefix information specified in the Biding Update with route installed by the Routing Update message. The present invention can be applied to both two distinct modes (explicit mode and implicit mode) that prefix information is specified in the Binding Update or not.
摘要:
The present invention discloses a technique for realizing more secure communication and more efficient communication. According this technique, mobile router 111 informs correspondent node 130 of network prefix of a mobile network which mobile router includes behind, by sending HoTI message 203. Correspondent node sends NPT message 205 including the token which is cryptographically generated based on the network prefix in the HoTI message. Mobile router extracts this token and sends BU message 206 which comprises the checksum which is generated by this token and the conventional RR procedure tokens. Instead of the above mobile router, correspondent router can be also applied.
摘要:
A technology is disclosed for efficiently and effectively conveying location and mobility related information about a mobile node to the network in order to facilitate Location and mobility related functions and services. According to this technology, in order to detect location and mobility (for example, movement velocity) of the mobile node, dissemination of information including the identification information of the mobile node and the count metric indicating the distance to the mobile node is performed among adjacent network nodes. The network node, upon receiving this message, stores the information in the message, and generates a new count metric by decreasing the count metric. The network node then sends the message including the identification information of the mobile node and this newly generated count metric to the other network nodes. For example the network node determines the priority of resource reservation for each mobile node based on the count metric of each mobile node.
摘要:
A technology is disclosed for reducing the burst of DAD messages which may be triggered due to the change of the network prefix when using the technique of the neighbor discovery proxy. According to this technology, in roaming from the access network link 101 to the access network link 102, MR 121 receives advertisement of a new prefix 172 from AR 112. MR 121 selects either one of MR 122 and MR 123 which are connected behind MR 121, and informs, for example only MR 122, that it is necessary to change the prefix. Thus, MR 122 and VMN 132 which is connected to the link 142 behind MR 122, configure new addresses, respectively. When address configuration is completed at the mobile network of MR 122, MR 121 informs another MR 123 that it is necessary to change the prefix, and then MR 123 and VMN 133 configure new addresses, respectively. This can prevent DAD messages generated along with the address configuration from flocking in a short period.
摘要:
Route optimization between a mobile network and correspondent node may be achieved by having the mobile router of the mobile network sending prefix-scoped binding update messages to the correspondent node. In order to allow the recipient of a prefix-scoped binding update message to verify the mobile network prefix information contained in the said prefix-scoped binding update message, the present invention provides a system, and associated methods and apparatus thereof, of using special cryptographic certificates to prove the ownership of the network prefixes. The certificates, or parameters derived from the certificates, are transmitted alongside the network prefix in the binding update message sent to the correspondent node. By verifying the network prefix against the certificates, or parameters derived from the certificates, a correspondent node can determine the validity of a prefix-scoped binding update message.