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1. (WO2004036819) METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING DATA USING PACKETS CARRYING PRIORITY INFORMATION

Pub. No.:    WO/2004/036819    International Application No.:    PCT/JP2003/013228
Publication Date: Apr 29, 2004 International Filing Date: Oct 16, 2003
IPC: H04L 1/00
H04L 1/18
Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
HATA, Koichi
MIYAZAKI, Akihiro
Inventors: HATA, Koichi
MIYAZAKI, Akihiro
Title: METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING DATA USING PACKETS CARRYING PRIORITY INFORMATION
Abstract:
An object of the present invention is to provide a method of assigning an importance level to each packet which includes a payload, obtained by dividing data. A data transmission device (400) transmits data divided into packets. The data transmission device (400) includes: an importance-level storage part (403) for storing an importance level of each packet; an importance-level field creation part (404) for storing the importance levels of a predetermined number of packets and creating an importance-level field; an importance-level field addition part (405) for storing the created importance-level field in a current packet to be sent; and a packet transmission part (406) for sending the packet having stored therein the importance-level field.