MITv - a solution for an interactive TV based on IP multicast over satellite

Abstract

Ahsfmcl--Television is the must popular audiovisual applicatiun ever used. The technoligical headways in digital transmissions allow new interactive services to complement classical Television broadcasts. However, the solutious available need specific infrastructures often making them hard and costly to deploy. MITT is a propositiun for interactive television to he deployed using association of mrrent distribution television systems (e.g., satellite DVB-S, cable DVB-T, TV over xDSL, etc.) and clwieal Internet infrastructure. MITv makes use of the natural association between broadcasted TV programs and associated interactive contents to manage replication of those contents over an adhoc infrastructure. The replication phaTe can be based on IP Multieast over satellite service, providing a high performance and realistic way to convey the interactive content over the geographically distributed replication units. The proximity between replication units and end-users then allow a very high quality for interactive media presentation by the way of an access network such as xDSL. The MlTv system was entirely developed and tested in real conditions through a satellite/xDSL network emulator.Zndex terms-lP multicast, Interactive TV, Caching, DVB, xDSL, Network emulation.

Systematic Review of Multiple Contents Synchronization in Interactive Television Scenario

“…Instead of using prototypes or a real environment, researches can use simulation: a representation of the problem, attempting to predict aspects of the behavior of the system by creating a model and simulating it on a virtual environment. In TV scenario, researches [57,59,68,75,80,84] simulate the broadcasting transmission with a local video file or stream server and add extra content with the use of other local server.…”

“…Entertainment is presented as study case in twenty-five works, twelve about sports (additional audio streams, automatic annotations, games statistics, betting platforms, and others) [21,22,42,49,53,58,66,69,71,75,76] and thirteen about general entertainment (movies, series, soup-operas, etc.) [10,18,29,33,34,43,47,48,57,60,61,70].…”

“…The contributions of the surveyed papers are applications: the paper focus on the description of a specific multimedia application [18][19][20][21][22][23][24][25][26][27][28][29][30]; architecture: the paper proposes an architecture to solve synchronization problems but does not present programming interfaces or formalization [31][32][33][34][35][36][37][38][39]; framework: the paper presents a framework [40] that developers may use to provide synchronization to their multimedia applications [41][42][43][44][45][46][47][48][49]; language: the paper presents the description of a programming language that may be used to develop applications [17]; model: the paper presents the modeling of an approach that in theory may be used to bring synchronization to the applications [50][51][52][53][54][55][56]; platform/middleware: a platform which provides synchronization functionalities is presented. Also modifications to existing platforms are considered in this category [10,[57][58]…”

“…These platforms directly receive the broadcasting and broadband contents and synchronize them with its specifications. MITv [57] is a platform that sends interactive content within the broadcasting or an interactive channel. The channel used depends on the demand of the extra content: if the demand is huge it uses the broadcasting, if not it uses the interactive channel.…”