Dynamic multiplexing and UPC renegotiation for MPEG video over ATM networks

• Type: Article in International Conference Proceedings Book
• Date: 2000

Authors

Maria Teresa Andrade (Author) FEUP; Artur Pimenta Alves (Author) FEUP

Conference proceedings International

Title: Proceedings of the International Workshop on Packet Video

Pages: 1-12

International Workshop on Packet Video, PV'2000

Cagliari, Itália, Junho 2000

Other information

Abstract (EN): This paper presents an experimental approach for QoS-aware and bandwidth-efficient transmission of multimedia sources over ATM networks. VBR video sources are statistically multiplexed at the application level. Usage Parameter Control (UPC) values of a single connection for the aggregate traffic are dynamically calculated and renegotiated with the network during the session lifetime. New sources join the system by identifying their desired quality of service from the user perspective. A statistical multiplexer dynamically assigns bandwidth to each source according to their requests and network resources availability. A dynamic UPC manager negotiates the traffic contract of the connection for the multiplexed stream. Based on feedback information sent by the network regarding resources availability and on the bandwidth requested by the statistical multiplexer, the UPC manager may initiate a renegotiation process with the network to adjust the traffic parameters to the present needs of the aggregate traffic. Performing the connection admission control procedures for the aggregate traffic, allows significant reductions in the value of the total peak rate when compared to the sum of peak rates of individual connections. It also reduces the burstiness of the flow submitted to the network, thus increasing the lifetime of each set of UPC parameters.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12