Method for performing inter-rat handover
US8457070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2009 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Mar 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0016
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Inter-RAT handover method is disclosed. A method for supporting an Inter-RAT handover by an IEEE 802.16m MS includes performing, by the MS, pre-registration in an Inter-RAT target BS using a tunneling, if a channel quality of an Inter-RAT neighbor cell is higher than a pre-registration threshold, and transmitting a handover request message for a handover to the target BS to a serving BS, if a channel quality of the neighbor cell is equal to or higher than a handover threshold during a time duration in a scanning of the neighbor cell and a channel quality of the target BS is equal to or higher than that of the neighbor cell. This handover method reduces a time required for a handover from an IEEE 802.16m network to a Non-802.16m network, provides a seamless service, supports a rapid recovery in case of a radio link failure, and increases handover reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.