Base station and method in relay node mobility
US9351160B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2012 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jun 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a base station and a method for security key synchronization during relay node (RN) mobility. In one embodiment, the base station may include a first transceiver configured to receive a Next Hop Chaining Counter in use, NCCin_use, sent from a source base station; a security key synchronization determining unit configured to determine that a security key synchronization criteria as follows is met: NCClatest−NCCin_use>Threshold, wherein NCClatest denotes a Next Hop Chaining Counter corresponding to the last Next Hop (NH) received from evolved packet core (EPC) for the user equipment (UE), and Threshold is a predetermined threshold; a second transceiver configured to send a security key update request to a relay node serving the UE, and to receive a security key update response from the relay node serving the UE; and a security key updater configured to update the NCCin_use as the NCClatest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.