Maintaining the composition of transferred data during handover
US5940371A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 22, 1996 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Oct 22, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a radio data transmission system which transmits data in cell form, the risk of cell loss or the risk of out-of-ordering during handover can be diminished by synchronizing the cell transmission between the new (50) and the old (40) base stations. The old base station (40) delivers to the new base station (50) and/or the switch (51), information on the last cell that was transmitted successfully and in the right order through the old base station, whereby the new base station continues the transmission by starting from the first failed cell. Cells need not be identified one by one if group numbering is applied in which the first or the last cell of a given group (31, 32, 33, 34) or a given counter cell is numbered, and the rest can be indicated, where necessary, by counting the distance from the numbered cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.