衛星DMB服務的技術與應用 : 以韓國為例

Abstract

Ubiquitous時代的到來，伴隨著通信廣播融合之服務以及雙向廣播的發展，現在出現了新概念的廣播系統DMB（Digital Multimedia Broadcasting）。DMB系統主要可以分為衛星DMB與Ground wave DMB兩種，本研究主要試探討衛星DMB的廣播系統，除了韓國之外，目前已有許多國家都開始評估是否要導入衛星DMB的系統，而為了要導入衛星DMB的廣播系統，必須擁有尖端的通信與廣播科技與設備，並與適當的產業相互結合。 目前韓國與日本都已開始提供衛星DMB 的服務，中國大陸與歐、美等一些國家，也將要導入衛星DMB的系統，而本研究將以韓國導入衛星DMB的情況為例，加以分析。本論文的主要內容如下： 1. 提供衛星DMB 服務時所必要的核心技術，以及其他國家與韓國的事業發展狀況分析。 2. 介紹衛星DMB主要的三種收益來源：廣告、加入會員、一般用戶，以及主導衛星DMB事業的TU Media公司股東結構。 3. 衛星DMB系統商用化時，可以提供的三種連接服務：LBS（Location Based Services）、ITS（Intelligent Transportation Systems）與TPEG（Transport protocol experts group。 4. 衛星DMB事業導入初期可能出現的一些問題、衛星DMB事業者未來不確定性的問題、事業者選定的問題。 5. 衛星DMB Service進入廣播及通信市場時，可能遇到利用衛星廣播、提供行動電話服務為主的IMT-2000系統以及同樣廣播方式的Ground wave DMB等競爭者。 關鍵字 : Satellite/Ground wave DMB(Digital Multimedia Broadcasting)、收入方式、LBS、 ITS2000、TPEG。

The ubiquitous era has arrived, bringing together communications and broadcasting with interactive broadcasting. In this era, a new type of broadcasting system has appeared called Digital Multimedia Broadcasting (DMB). The DMB system is mainly composed of two systems called Satellite DMB and Ground Wave DMB. The focus of this paper will concentrate on the Satellite DMB system. Except in Korea, a number of countries have already begun to assess the introduction of Satellite DMB system. In order to introduce the Satellite DMB system, one must have state of the art communication and broadcasting technology as well as a close cooperation working with the industry. Currently, Korea and Japan have already offered Satellite DMB services. China along with a few countries in Europe and America are also attempting to introduce Satellite DMB services in their countries. The focal point of this paper analyses Korea’s approach to Satellite DMB services. The following are the key points discussed in this paper: 1. The key technologies required for providing Satellite DMB services by analyzing the current business developments in Korea and other countries. 2. Introduction of Satellite DMB’s three main sources of income: advertisements, memberships, and regular subscribers, as well as an introduction into the investor structure of the current leader in Satellite DMB services, TU Media. 3. The three types of connection services offered through commercial Satellite DMB: Location Based Services (LBS), Intelligent Transportation Systems (ITS), and Transport Protocol Experts Group (TPEG). 4. Problems in introducing Satellite DMB services like investors’ willingness to invest in a Satellite DMB market when the future and development are an uncertainty. 5. When entering the broadcasting market, Satellite DMB will encounter competitors like IMT-2000 who use Satellite broadcasting to provide cell phone services or Ground wave DMB who use the same broadcasting method as Satellite DMB. Keywords: Satellite/Ground wave Digital Multimedia Broadcasting (DMB), Payment method, LBS, ITS2000, TPEG.