Secondary cell group failure handling
US11051352B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2020 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Mar 6, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/19
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to operate in dual connectivity (DC) and with split radio bearers, such that one or more split radio bearers are associated with a first cell group and one or more split radio bearers are associated with a second cell group. In some cases, a cell group failure may occur. Accordingly, the UE may autonomously update one or more radio bearer configurations of the split radio bearers to determine a processing scheme for the cell group failure. Additionally or alternatively, as a result of the cell group failure, an amount of unacknowledged data in a radio link control (RLC) buffer for the second cell group may get stuck such that the network cannot access it. Accordingly, the UE may perform a PDCP data recovery (e.g., user plane handling) to access the unacknowledged data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.