| 摘要 |
Apparatus for and methods of enabling a gateway node of a first packet-switched data network to select a first channel, from a plurality of channels, for transferring a tunnelled data packet to a destination packet protocol address of a mobile node provided service in the first network, the selecting being performed by mapping a packet data protocol address to one, or more, data packet filters and by detecting a trigger event indicating that the gateway node may receive tunnelled data from a second packet-switched network external to the first network, and in response, encapsulating a packet data protocol address into a first data packet filter to indicate that the data packet has been tunnelled via a tunnelling node, the first packet filter being used by the gateway node to select from the plurality of channels.
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