Optimization of point-to-point sessions

A computer-readable medium encoded with a data structure operable to perform the following:

• communicating, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receiving, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• determining, at the packet data serving node, whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determining, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol or a simple Internet Protocol;
• determining, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• deciding, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations;
• if the mobile node is serviced by the simple Internet Protocol:
• determining whether a first Internet Protocol address associated with the mobile node is the same as a second Internet Protocol address associated with the mobile node, the first Internet Protocol address associated with a message received from the mobile node, the second Internet Protocol address stored at the packet data serving node;
• negotiating the point-to-point session, if the first Internet Protocol address is not the same as the second Internet Protocol address;
• and
• updating the point-to-point session, if the first Internet Protocol address is the same as the second Internet Protocol address.

A computer-readable medium encoded with a data structure operable to perform the following:

• communicating, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receiving, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• determining, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol;
• determining, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• deciding, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations.

A computer-readable medium encoded with a data structure operable to perform the following:

• communicating, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receiving, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• determining, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol or a simple Internet Protocol;
• determining, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• deciding, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations;
• if the mobile node is serviced by the simple Internet Protocol:
• determining whether a first Internet Protocol address associated with the mobile node is the same as a second Internet Protocol address, the first Internet Protocol address associated with a message received from the mobile node, the second Internet Protocol address stored at the packet data serving node;
• negotiating the point-to-point session, if the first Internet Protocol address is not the same as the second Internet Protocol address;
• and
• updating the point-to-point session, if the first Internet Protocol address is the same as the second Internet Protocol address.

A system for optimizing point-to-point sessions comprising:

• at least one packet data serving node operable to:
• communicate with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receive, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• determine whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determine whether the mobile node is serviced by a mobile Internet Protocol;
• determine whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• decide whether to negotiate a point-to-point session for the mobile node in response to the determinations;
• and
• a plurality of packet controller functions communicating with the at least one packet data serving node.

A system for optimizing point-to-point sessions comprising:

• at least one packet data serving node operable to:
• communicate with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receive, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• determine whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determine whether the mobile node is serviced by a mobile Internet Protocol or a simple Internet Protocol;
• determine whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• decide whether to negotiate a point-to-point session for the mobile node in response to the determinations;
• and
• a plurality of packet controller functions communicating with the at least one packet data serving node;
• and
• the at least one packet data serving node further operable to:
• if the mobile node is serviced by the simple Internet Protocol:
• determine whether a first Internet Protocol address associated with the mobile node is the same as a second Internet Protocol address associated with the mobile node, the first Internet Protocol address associated with a message received from the mobile node, the second Internet Protocol address stored at the packet data serving node;
• negotiate the point-to-point session, if the first Internet Protocol address is not the same as the second Internet Protocol address;
• and
• update the point-to-point session, if the first Internet Protocol address is the same as the second Internet Protocol address.

A packet data serving node for optimizing point-to-point sessions comprising:

• a memory operable to store a table, the table comprising an entry corresponding to a mobile node, the entry comprising:
• a mobile station identifier field operable to store a mobile station identifier;
• and
• a previous access network identifier field operable to store a previous access network identifier;
• a processor coupled to the memory and operable to:
• communicate with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receive a registration request from the mobile node;
• determine whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determine whether the mobile node is serviced by a mobile Internet Protocol;
• determine whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• decide whether to negotiate a point-to-point session for the mobile node in response to the determinations.

A packet data serving node for optimizing point-to-point sessions comprising:

• a memory operable to store a table, the table comprising an entry corresponding to a mobile node, the entry comprising:
• a mobile station identifier field operable to store a mobile station identifier;
• and
• a previous access network identifier field operable to store a previous access network identifier;
• a processor coupled to the memory and operable to:
• communicate with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receive a registration request from the mobile node;
• determine whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determine whether the mobile node is serviced by a mobile Internet Protocol or a simple Internet Protocol;
• determine whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• decide whether to negotiate a point-to-point session for the mobile node in response to the determinations;
• if the mobile node is serviced by the simple Internet Protocol:
• determine whether a first Internet Protocol address associated with the mobile node is the same as a second Internet Protocol address associated with the mobile node, the first Internet Protocol address associated with a message received from the mobile node, the second Internet Protocol address stored in the table;
• negotiate the point-to-point session, if the first Internet Protocol address is not the same as the second Internet Protocol address;
• and
• update the point-to-point session, if the first Internet Protocol address is the same as the second Internet Protocol address.

A computer-readable medium encoded with a data structure operable to:

• communicate, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receive a registration request from a mobile node;
• determine, at the packet data serving node, whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determine, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol;
• determine, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• decide, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations.

A computer-readable medium encoded with a data structure operable to:

• communicate, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receive a registration request from a mobile node;
• determine, at the packet data serving node, whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determine, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol or a simple Internet Protocol;
• determine, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• decide, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations;
• if the mobile node is serviced by the simple Internet Protocol:
• determine whether a first Internet Protocol address associated with the mobile node is the same as a second Internet Protocol address associated with the mobile node, the first Internet Protocol address associated with a message received from the mobile node, the second Internet Protocol address stored at a packet data serving node;
• negotiate the point-to-point session, if the first Internet Protocol address is not the same as the second Internet Protocol address;
• and
• update the point-to-point session, if the first Internet Protocol address is the same as the second Internet Protocol address.

A system for optimizing point-to-point sessions comprising:

• means for communicating, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• means for receiving, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• a means for determining, at the packet data serving node, whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• a means for determining, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol;
• a means for determining, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• a means for deciding, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations.

A computer-readable medium encoded with a data structure operable to perform the following:

• communicating, by a packet data serving node, with a current packet controller function through a tunnel, the current packet controller function operating as a packet switch that provides a circuit service between the packet data serving node and a base station controller, the tunnel enabling the current packet controller function and the packet data serving node to communicate over an Internet Protocol-based network, the current packet controller function serviced by the packet data serving node;
• receiving, through the tunnel, a registration request from a mobile node, the mobile node communicating with the current packet controller function;
• determining, at a packet data serving node, whether the registration request comprises a previous access network identifier identifying a previous packet controller function;
• determining, at the packet data serving node, whether the mobile node is serviced by a mobile Internet Protocol;
• determining, at the packet data serving node, whether the mobile node communicated with a previous packet controller function serviced by the packet data serving node;
• and
• deciding, at the packet data serving node, whether to negotiate a point-to-point session for the mobile node in response to the determinations by:
• negotiating the point-to-point session if the mobile node did not communicate through the previous packet controller function serviced by the packet data serving node;
• and
• updating the point-to-point session if the mobile node did communicate through the previous packet controller function serviced by the packet data serving node.