Method of enhanced connection recovery and loss-less data recovery
US9504082B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | May 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An enhanced connection recovery upon lost RRC connection due to radio link failure (RLF) or handover failure (HOF) is proposed. A UE first establishes an RRC connection in a source cell in a mobile communication network. Later on, the UE detects a failure event and starts an RRC reestablishment procedure in a target cell to restore the RRC connection. In a first novel aspect, a fast NAS recovery process is applied to reduce the outage time in the target cell. In a second novel aspect, context fetching is used to reduce the outage time in the target cell. In a third novel aspect, a loss-less reestablishment procedure is proposed to reduce data loss during the connection recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.