Transmission apparatus and method for changing data packets priority assignment depending on the reception feedback
US6987730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1887
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A data transmitter 10 transmits packets each with a sequence number and a priority added. A data receiver 20 detects any packet loss by referring to the sequence numbers added to the packets, and if detecting any packet of high priority as having been lost, requests for packet retransmission. Based on information about thus detected packet loss, the data receiver 20 generates and transmits an RR packet 110 indicating the packet reception state. The data transmitter 10 extracts from the RR packet 110 a packet loss ratio 200, and therewith, changes manners of priority assignment. The manners are so changed that the packet of high priority is found with a lower ratio when the packet loss ratio 200 is high, and when the packet loss ratio 200 is low, found with a higher ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.