Cell based data transmission method
US6560206B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5674
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention seeks to provide a more reliable method for transmitting data packets over a communications link, such as a wireless link. A method of error correction for a cell based transmission protocol is provided wherein the cells are arranged to form multi-cell frames wherein for each frame the header fields are reduced in size and; wherein idle cells provide space for error correction within the payload of the multi-cell frame. Preferably, an algorithm is provided which is operable to evenly distribute these idle cells in time. The separate coding of the headers and payloads can enable at least some payload errors to be removed by reference to the header field. Where idle cells are present in the frame, the presence of ATM idle cell headers in the header field of the frame is used to enhance the effectiveness of the coding applied to the payload field. The present invention can provide a radio link protocol that affords robust communications between a headend and a plurality of mobile substations in a standardised data communications format, such as the ATM data format
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.