Determination of acceptable sequence number ranges in a communications protocol
US6765885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communications protocol utilizes protocol data units (PDUs) for transmitting and receiving service data units (SDUs). Each PDU has a sequence number of n bits for indicating a relative sequential ordering of the PDU in a transmitted or received stream of PDUs. A transmission time interval (TTI) is also used in which a predetermined number of PDUs are transmitted or received. PDUs are received within a TTI. A starting sequence number and an ending sequence number for received PDUs within the TTI are found. Any received PDU within the TTI that has a sequence number that is sequentially before the starting sequence number or that is sequentially after the ending sequence number is discarded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.