Node and method for signalling in a proxy mobile internet protocol based network
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsZu Qiang, Yong Yang
Life of this patent
Estimating the term…
Abstract
Example embodiments are presented herein which relate to signaling in the presence of a Proxy-Call Session Control Function (P-CSCF) node failure or restart in a Proxy Mobile Internet Protocol (PMIP) based network. The example embodiments provide a means for a PGW or GGSN, which functions as a Local Mobility Anchor (LMA), to provide an update or indication of the P-CSCF failure or restart directly to a Serving Gateway, which functions as a Mobility Access Gateway (MAG).
Claims26
A method for providing an indication of a Proxy-Call Session Control Function (P-CSCF) node failure or restart in a Proxy Mobile Internet Protocol (PMIP) based network, the method comprising:
- determining, by a Local Mobility Anchor (LMA) node, a presence of the P-CSCF node failure or restart;
- and
- the LMA node sending, to a Mobile Access Gateway (MAG) node, a communication message, said communication message comprising a flag or cause code, or being of a message type, providing an indication of the P-CSCF node failure or restart in the PMIP based network and further providing an indication to re-establish a PMIP session without releasing a PDN connection.
A Local Mobility Anchor (LMA) node for providing an indication of a Proxy-Call Session Control Function (P-CSCF) node failure or restart in a Proxy Mobile Internet Protocol (PMIP) based network, the LMA node comprising:
- processing circuitry configured to determine a presence of the P-CSCF node failure or restart;
- and
- interface circuitry configured to send, to a Mobile Access Gateway (MAG) node, a communication message, said communication message comprising a flag or cause code, or being of a message type, providing an indication of the P-CSCF node failure or restart in the PMIP based network and further providing an indication to re-establish a PMIP session without releasing a PDN connection.
A method, in a Mobile Access Gateway (MAG) node, for Proxy Mobile Internet Protocol (PMIP) signalling in a presence of a Proxy-Call Session Control Function (P-CSCF) node failure or restart in a Proxy Mobile Internet Protocol (PMIP) based network, the method comprising:
- receiving, from a Local Mobility Anchor (LMA) node, a communication message, said communication message comprising a flag or cause code, or being of a message type, providing an indication of the P-CSCF node failure or restart in the PMIP based network and further providing an indication to re-establish a PMIP session without releasing a PDN connection;
- and
- updating at least one Packet Data Network (PDN) connection associated with the P-CSCF node failure or restart based on the communication message.
A Mobile Access Gateway (MAG) node for Proxy Mobile Internet Protocol (PMIP) signalling in a presence of a Proxy-Call Session Control Function (P-CSCF) node failure or restart in a Proxy Mobile Internet Protocol (PMIP) based network, the MAG node comprising:
- interface circuitry configured to receive, from a Local Mobility Anchor (LMA) node, a communication message, said communication message comprising a flag or cause code, or being of a message type, providing an indication of the P-CSCF node failure or restart in the PMIP based network and further providing an indication to re-establish a PMIP session without releasing a PDN connection;
- and
- processing circuitry configured to update at least one Packet Data Network (PDN) connection associated with the P-CSCF node failure or restart based on the communication message.
Dependencies are inferred from the claim text.