A new feedback error control scheme for block based video communication in packet switched wireless networks

Author

Meggers, Jens ; Subramaniam, R.

Author_Institution

Dept. of Comput. Sci., Tech. Hochschule Aachen, Germany

fYear

1999

fDate

1999

Firstpage

324

Lastpage

330

Abstract

This paper describes a new feedback scheme suitable for block-based video transmission as it is in use for H.261 video transmission over IP networks. The new scheme inherently provides support for highly unreliable communication links and thus improves packet-switched video transmission over wireless links. The evaluation of the new feedback scheme has been done by means of a prototype implementation, which we compare with other feedback schemes. We show how to use our new scheme with the real-time transport protocol (RTP) and give several extensions and improvements. Measurements show significant improvement in terms of bandwidth usage and user-level perception

Keywords

error correction codes; feedback; packet radio networks; quality of service; radio links; transport protocols; visual communication; H.261 video transmission; IP networks; QoS; RTP; bandwidth usage; block-based video transmission; feedback error control scheme; packet-switched wireless networks; real-time transport protocol; unreliable communication links; user-level perception; wireless links; Bandwidth; Communication switching; Communication system traffic control; Error correction; Feedback; Packet switching; Prototypes; Streaming media; Transport protocols; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers and Communications, 1999. Proceedings. IEEE International Symposium on

Conference_Location

Red Sea

Print_ISBN

0-7695-0250-4

Type

conf

DOI

10.1109/ISCC.1999.780871

Filename

780871