Coordinated change of protocol data unit session anchors
US12225417B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2019 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Nov 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0011
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems for coordinated change of Protocol Data Unit (PDU) Session Anchors (PSAs) are provided. According to one embodiment, a method for coordinated change of PSAs comprises, at a node for maintaining PSA change status for PDU sessions, receiving a request for a PSA change or handover for a first PDU session having a first PSA, where the first PDU session and a second PDU session having a second PSA different from the first PSA are redundant PDU sessions with each other. If the second PDU session is undergoing a PSA change or handover, the request to change the first PDU session is denied; otherwise, the request to change the first PDU session is granted, and the second PDU session will not be allowed to be changed until the PSA change or handover for the first PDU session is complete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.