Technique For Internet Protocol Anchor Relocation
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Abstract
A system and method for IP POP change for a user equipment are described. The approach is taken of assigning a new IP POP to the user equipment in an ongoing packet data unit session, while maintaining packet data transmission in that session. The new IP POP is brought into commission in stages within the session, with the uplink path being moved and then the downlink path.
17 Citations
42 Claims
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1-22. -22. (canceled)
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23. A method for Internet Protocol (IP) Point of Presence (POP) change for a user equipment in a communication architecture, the communication architecture having a user plane for packet data communication of user data and a control plane for controlling the packet data communication, the method comprising:
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managing a first communication path in the user plane between a user equipment and a first IP POP having a first IP address, the first communication path having a first uplink path and a first downlink path; deciding, in the control plane, on an IP POP change to a second communication path in the user plane between the user equipment and a second IP POP having a second IP address, the second communication path having a second uplink path and a second downlink path; and performing, in the control plane, the IP POP change from the first communication path to the second communication path, wherein the IP POP change is effected by; preparing the second communication path; switching from the first uplink path to the second uplink path; assigning the second IP address to the user equipment; activating the second downlink path; and releasing the first downlink path. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of controlling a user equipment to change its Internet Protocol (IP) Point of Presence (POP) in a communication architecture, the communication architecture having a user plane for packet data communication of user data and a control plane for controlling the packet data communication, the method comprising:
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managing a first communication path in the user plane between a user equipment and a first IP POP having a first IP address, the first communication path having a first uplink path and a first downlink path; providing, for the user equipment, a second communication path in the user plane between the user equipment and a second IP POP having a second IP address, the second communication path having a second uplink path and a second downlink path; and implementing the IP POP change from the first communication path to the second communication path, wherein the IP POP change involves the user equipment receiving the second IP address and then transmitting on the second uplink path.
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33. A core network component for managing Internet Protocol (IP) Point of Presence (POP) change for a user equipment in a communication architecture, the communication architecture having a user plane for packet data communication of user data and a control plane for controlling the packet data communication, the core network component comprising:
a control plane function unit, the control plane function unit comprising processing circuitry and memory containing instructions executable by the processing circuitry whereby the control plane function unit is operative to; manage a first communication path in the user plane between a user equipment and a first IP POP having a first IP address, the first communication path having a first uplink path and a first downlink path; decide, in the control plane, on an IP POP change to a second communication path in the user plane between the user equipment and a second IP POP having a second IP address, the second communication path having a second uplink path and a second downlink path; and perform, in the control plane, the IP POP change from the first communication path to the second communication path, wherein the IP POP change is effected by; preparing the second communication path; switching from the first uplink path to the second uplink path; assigning the second IP address to the user equipment; activating the second downlink path; and releasing the first downlink path. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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42. A user equipment capable of changing its Internet Protocol (IP) Point of Presence (POP) in a communication architecture, the communication architecture having a user plane for packet data communication of user data and a control plane for controlling the packet data communication, the user equipment comprising:
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processing circuitry; memory containing instructions executable by the processing circuitry whereby the user equipment is operative to; use a first communication path in the user plane between a user equipment and a first IP POP having a first IP address, the first communication path having a first uplink path and a first downlink path; access a second communication path in the user plane between the user equipment and a second IP POP having a second IP address, the second communication path having a second uplink path and a second downlink path; and implement the IP POP change from the first communication path to the second communication path, wherein the IP POP change involves the user equipment receiving the second IP address and then transmitting on the second uplink path.
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Specification