Method and apparatus for packet call setup

摘要

An IP packet forwarding server forwards an IP data packet between a user terminal and a machine-type communications (MTC) device allocated with a private internet protocol (IP). Such an IP packet forwarding server allocates a call identifier for connection between the user terminal and the MTC device, sets up a packet call to the MTC device and the user terminal using the call identifier, obtains packet forwarding information while setting up the packet call to the MTC device and the user terminal, and forwards an IP data packet between the MTC device and the user terminal using the packet forwarding information.

主权项

1. A method for setting up a packet call at an IP packet forwarding server that forwards an IP data packet between a user terminal and a machine-type communications (MTC) device allocated with a private internet protocol (IP), the method comprising:
allocating a call identifier for connection between the user terminal and the MTC device; setting up a packet call to the MTC device and the user terminal using the call identifier, including
transmitting the call identifier to the MTC device and the user terminal,receiving first and second socket setup IP packets respectively from the MTC device and the user terminal, the first and second socket setup IP packets both having the call identifier assigned as a destination port number therein, andsetting up the packet call using information from the first and second socket setup IP packets; obtaining packet forwarding information while setting up the packet call to the MTC device and the user terminal; and forwarding an IP data packet between the MTC device and the user terminal using the packet forwarding information.