Integration of 802.21 media independent handover functionality to radio interface layer and telephony server
US8134978B2 · kind B2 · utility
3Cited by
4References
16Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 28, 2008 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Aug 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio interface layer media independent handover (RIL MIH) client functionality enables transparent inter-system handover of a wireless transmit/receive unit (WTRU) between different radio access technologies (RATs), without user intervention. The RIL MIH client interacts with RIL drivers and proxies, informs the RIL proxies of the handover status, then the proxies interact with a new driver in use. A WTRU is modified to add MIH functionality to a telephony server to support inter-system handover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.