Handover method in wireless portable internet system
US8934448B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Dec 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W36/0064
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a handover method in a wireless portable Internet system. When a mobile subscriber station is in a drop state, a ranging request message including an identifier of a previous base station and a string generated by encoding the ranging request message using an authentication key of the previous base station is sent to a target base station. The target base station requests the previous base station to execute handover of the mobile subscriber station using the identifier of the previous base station included in the ranging request message. The previous base station carries out message authentication using the encoded string received from the target base station, and when the authentication is successful, transmits information about the mobile subscriber station that is required for handover to the target base station. Accordingly, a ceaseless service session can be provided even in the drop state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.