| 摘要 |
<p>The present invention relates to a method for delivering error-critical traffic through a packet-switched network, and comprising the steps of: - identifying first data packets (S1) conveying a particular error-critical traffic payload (IPTV), second data packets (S2) conveying FEC information (FEC) for self-recovering the particular traffic payload, and third data packets (S3) conveying a retransmitted part (RET) of the particular traffic payload, - assigning a first traffic priority level (P1) to the first data packets, a second traffic priority level (P2) to the second data packets, and a third traffic priority level (P3) to the third data packets, and - delivering the first, second and third data packets through said packet-switched network according to their respective traffic priority level. A method according to the present invention is characterized in that the first and third traffic priority level have a higher scheduling precedence than a best effort traffic priority level (P0), while the second traffic priority level has a lower or equal scheduling precedence than the best effort traffic priority level. The present invention also relates to a network unit for delivering error-critical traffic through a packet-switched network, such as an access node (20) or a server (30, 40).</p> |
