Handover for communication networks
AssigneeOfinno, LLC
InventorsWeihua Qiao, Esmael Hejazi Dinan, Kyungmin Park, Peyman Talebi Fard, Jinsook Ryu, Taehun Kim, Hua Zhou, Yunjung Yi
Life of this patent
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Abstract
A second control plane function (CPF) receives, from a first CPF, a request for a handover for a session of a wireless device. The handover request indicates an internet protocol (IP) address, of the wireless device, used by a first user plane function (UPF). The handover request indicates to maintain the IP address of the wireless device. The second CPF sends, to a second UPF, a user plane session request message comprising the IP address.
Claims20
A control plane function (CPF) comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the CPF to perform:
- receiving, from a further CPF, a request for a handover for a session of a wireless device, the request for the handover indicating:
- an internet protocol (IP) address, of the wireless device, used by a first user plane function (UPF);
- and
- to maintain the IP address of the wireless device;
- determining, based on the indicating to maintain the IP address, to maintain and/or reuse the IP address of the wireless device, wherein the determining is based on a CPF pool indication indicating that the IP address of the wireless device is used by CPFs in a CPF pool;
- and
- sending, to a second UPF, a user plane session request message comprising the IP address.
A control plane function (CPF) comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the CPF to perform:
- sending, to a second CPF, a request for a handover for a session of a wireless device, the request for the handover indicating:
- an internet protocol (IP) address, of the wireless device, used by a first user plane function (UPF);
- and
- to maintain the IP address of the wireless device, wherein the second CPF determines to maintain and/or reuse the IP address of the wireless device, and wherein the determining is based on a CPF pool indication indicating that the IP address of the wireless device is used by CPFs in a CPF pool;
- and
- receiving, from the second CPF, a handover acknowledgement, wherein the handover acknowledgement comprises a forwarding tunnel indication.
A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a second control plane function (CPF), cause the second CPF to perform:
- receiving, from a first CPF, a request for a handover for a session of a wireless device, the request for the handover indicating:
- an internet protocol (IP) address, of the wireless device, used by a first user plane function (UPF);
- and
- to maintain the IP address of the wireless device;
- determining, based on the indicating to maintain the IP address, to maintain and/or reuse the IP address of the wireless device, wherein the determining is based on a CPF pool indication indicating that the IP address of the wireless device is used by CPFs in a CPF pool;
- and
- sending, to a second UPF, a user plane session request message comprising the IP address.
Dependencies are inferred from the claim text.