Communications unit and method of communicating having efficient packet acknowledgement
US6161207A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1996 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Nov 15, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communications unit (10) with a packet subdivider operable on a data packet (200) and an error detecting code generator. An acknowledgement message (NAK) is generated including error detecting code corresponding to packet portions (210-204) from the packet subdivider, thereby requesting retransmission of packet portions. At an originating unit (100) an error detection code is computed for each portion. The computed second error detection code for each sub-portion is compared with the received first error detection code for that portion. Portions for which corresponding error detection codes do not match are identified as bad portions and are retransmitted (220).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.