Method of transmitting low-latency data during handover in communication system, and apparatus therefor
US11206592B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2020 |
| Grant date | Dec 21, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An operation method of a terminal performing handover in a mobile communication system may comprise transmitting packet data convergence protocol (PDCP) downlink reception status information of the terminal and information on a target base station to a source base station; receiving downlink data from a user plane function (UPF) via the source base station based on a first tunnel configured between the source base station and the UPF; receiving downlink data from the UPF via the target base station based on a second tunnel configured by the UPF between the target base station and the UPF by using the PDCP downlink reception status information and the information on the target base station, which are transferred from the source base station; and discarding duplicated-received protocol data units (PDUs) from the source base station and the target base station, and reordering remaining PDUs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.