Design of Out-of-Band Protocols to Transmit UHDTV Contents in the CATV Network

Sunsik Roh

Department of Information and Communication, Gwangju University, Gwangju, Korea.

DOI: 10.4236/ijcns.2012.55034                

Abstract

The goal of an UHDTV is to broadcast digital video contents which is 16 times the pixel resolution of HDTV. As the resolution is increased, the UHDTV requires a transmission technology to support very high data transfer rate. In this paper, we propose two out-of-band protocols to transmit UHDTV contents in a CATV network: an OOB-based protocol and a DSG-based protocol. The former may be a short term solution which is well suitable for a traditional CATV network and the letter may be a long term solution which is adoptable for a CATV network equipped with DOCSIS functionalities. In order to transfer 200 Mbps UHDTV contents, proposed protocols use a channel bonding mechanism which combines several QAM channels. We propose CATV network architectures to support an UHDTV service with a channel bonding mechanism, and design the format of messages to share the information of bonded channels between a headend and a STB. We develop an OPNET simulator and ascertain successful transmission of UHDTV contents.

Keywords

UHDTV (Ultra High Definition TV); CATV Networks; Control Protocol; Network Simulation; Protocol Design

Conflicts of Interest

The authors declare no conflicts of interest.

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