A Framework for an IP-Based DVB Transmission Network

Abstract

One of the most important challenges for next generation all-IP networks is the convergence and interaction of wireless and wired networks in a smooth and efficient manner. This challenge will need to be faced if broadcast transmission networks are to converge with IP infrastructure. The 2nd generation of DVB standards supports the Generic Stream, allowing the direct transmission of IPbased content using the Generic Stream Encapsulation (GSE), in addition to the native Transport Stream (TS). However, the current signalling framework is based on MPEG-2 Tables that rely upon the TS. This paper examines the feasibility of providing a GSE signalling framework, eliminating the need for the TS. The requirements and potential benefits of this new approach are described. It reviews prospective methods that may be suitable for network discovery and selection and analyses different options for the transport and syntax of this signalling metadata. It is anticipated that the design of a GSE-only signalling system will enable DVB networks to function as a part of the Internet.

The Enhanced Encapsulation Architecture to Improve TV Metadata Encoding Performance by Schema Optimizing Mechanism

“…Korean IPTV service providers adopted the TVA as a standard for their contents guide description, and DVB-SI Transport Protocol (DVBSTP) [12] as their delivery protocol. Nevertheless, DVB-SI [10] based MPEG-2 TS has been used for the contents guide services.…”

“…An EPG application displays the contents guide using Java TV API according to a user's requests. The Java TV interfaces are implemented to extract information about service channel, program and schedules from TVA fragments [11], [12]. Figure 9 shows the reference implementations of the IPTV server and Fig.…”

GSSTP: A signalling transport protocol for DVB-S2 GSE-only transmission systems

“…Two common DVB-S2 Data Field Lengths (DFL) were used, 384 and 1644 B, to show their impact on the system efficiency. To compare the overhead contribution of DVBSTP and GSSTP, the three methods proposed to identify GSE packets carrying PSI/SI information in a GSE-only signalling architecture [8]& [9] are analysed: 1) GSE packets with an optional "DVB Signalling" Type and without a Label, 2) GSE with a 6 B Label and 3) GSE with a mandatory "DVB Signalling & Header Suppression" Type and a 6 B Label. The GSE overhead per PSI/SI Section will be 6, 10 and 10 B per each of the signalling identification methods, assuming unfragmented packets.…”

“…A bearer-agnostic framework that will allow second generation of DVB systems, DVB-S2 [3], DVB-SH [4] and DVB-T2 [5], to transition to a signalling transmission based only on the Generic Stream Encapsulation Protocol (GSE) [6]& [7] has been proposed [8]& [9]. GSE provides a networkoriented adaptation layer.…”

GSSTP: a signalling transport protocol for DVB‐S2 GSE‐only transmission systems

“…In addition, GSE is extensible, which allows implementing additional features through its extension headers , for example security, header compression and timestamps. Using GSE a second generation system could transition to a bearer‐agnostic framework based only on IP; such a method was proposed in &.…”