Data transmission between a first mobile services switching center of a first mobile radio system and a second mobile services switching center of a second mobile radio system
US6501953B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To create a connection between different mobile radio systems, data transmission between a first mobile services switching center (2GMSC) of a first mobile radio system (2G) and a second mobile services switching center (3GMSC) of a second mobile radio system (3G) is proposed, whereby the mobile services switching centers are connected through an interface (A*), via which useful data is transmitted at a variable useful data transmission rate, in which the useful data is transmitted within data frameworks including a definite pre-determined number of data fields, whereby, depending on the amount of useful data to be transmitted, at least one part of the data fields is first specified with the useful data and then the remaining part of the data fields is specified with dummy bits. Thus, a transmission channel which uses a fixed gross transmission rate (e.g., 64 kbit/s), but a variable useful data transmission rate (0-57.6 kbit/sec) is created.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.