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Telecommunications system and method

A telecommunication system and communication session technology, applied in the field of telecommunication systems, can solve problems such as incompatibility of GPRS network operation

Active Publication Date: 2009-04-08
ORANGE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a packet data network such as a GPRS network is used to communicate Internet packets, such route optimization routines may not be compatible with the operation of the GPRS network

Method used

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  • Telecommunications system and method
  • Telecommunications system and method
  • Telecommunications system and method

Examples

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Embodiment Construction

[0027] 3GPP and non-3GPP networks

[0028] It can be understood that the embodiments of the present invention are applicable to various types of packet data networks. However, in one example, the mobile node's home network or the mobile node's visited network, or both, are configured to work in accordance with the 3GPP standard, while in other embodiments, one of the home network or the visited network may be configured as Normal standard work of 3GPP standard.

[0029] Figure 1 shows an example in which a mobile node MN roams from a home network HN to a visited network VN. As shown in Figure 1, the home network HN is a packet data network operating in accordance with the General Packet Radio System (GPRS), so the elements forming part of the GPRS network correspond to the GPRS standard. The GPRS network thus includes a GPRS Gateway Support Node (GGSN) 1, a Serving Gateway Support Node (SGSN) 2, and a Radio Network Controller (RNC) 4. Two Node Bs 6, 8 connected to the RNC 4 are ...

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Abstract

A telecommunications system is arranged to provide a mobile communications session to a mobile node using an internet protocol. The telecommunications system comprises a home packet data network which includes a home agent of the mobile node and a visited packet data network. One of the home packet data network or the visited packet data network includes a packet data gateway for controlling the communication of the internet packets to and from the home packet data network from and to the visited packet data network. The mobile node is arranged to communicate a correspondent node binding update internet packet to the correspondent node via the packet date gateway, when the mobile node changes affiliation from the home packet data network to the visited packet data network. The correspondent node binding update internet packet provides a care of address of the mobile node within the visited packet data network and a home address of the mobile node. The packet data network is arranged to store the home address of the mobile node in association with the care of address of the mobile node, to adapt the correspondent node binding update internet packet by replacing the care of address in the received correspondent binding update packet with the address of the packet data gateway, and to communicate the adapted correspondent binding update packet to the correspondent node. The correspondent node therefore receives a correspondent binding update with the packet data gateway as the care of address. Thus, when the correspondent node communicates with the mobile node using the care of address of the packet data gateway, the packet data gateway can adapt the received internet packets, replacing the packet data gateway's address as the destination address with the care of address of the mobile node. Therefore, although a route optimisation process has taken place the internet packets are still routed via the packet data gateway .

Description

Technical field [0001] The present invention relates to a telecommunications system capable of providing a mobile communication session to a mobile node using an Internet protocol, wherein the mobile node is changed from a home packet data network to being attached to a visited packet data network. [0002] The present invention also relates to a method for providing a mobile communication session to the mobile node using the Internet protocol when the mobile node changes from a home packet data network to being attached to a visited packet data network. Background technique [0003] The packet data network used to provide a means for communicating data in the form of Internet packets between communication devices or nodes. A packet data network can provide a means for mobile communication with nodes (generally referred to as mobile nodes) using, for example, a wireless access interface, which allows communication equipment nodes to move within the wireless coverage area provided...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04W80/04H04W88/16H04W8/082
Inventor 陈晓保
Owner ORANGE SA
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