over our competitors, boast the world's fourth largest number of passengers.
Since the opening of Line1 in 1974, Seoul Metro has been the essential cornerstone of mass transportation for Seoul Metropolitan citizen by operating Line1 to Line4. For last few years, Seoul Metro is building an era of ubiquitous access to the digital world on our trains through high-speed wireless internet system.
Ⅰ. USN(Ubiquitous Sensor Network)
1. USN의 개념
USN(Ubiquitous Sensor Network)은 존재하는 물리적 네트워크를 활용하여 서비스를 제공하기 위한 개념적 네트워크로서, 센서네트워크를 통하여 센싱된 환경 또는 화학 정보 데이터를 인터넷이나 NGN(Next Generation Network)과 같은 인프라 네트워크를 활용하여 인프라 네트
areas. Both as a whole, and at individual facilities, security operations are tested, evaluated, and modified to assure adequate performance standards.
Reviews of this nature must be carried out by qualified security officers and operations personnel, and assessments should include information on the severity of any deficiency and how it relates to airport security as a whole. In particular, e
wireless internet business, diverse distribution channels, and so on. 11ST has been granted the concept, "The Street Leading Trends", and by offering various communities, wireless/conventional internet interlocking service, and new online shopping way, ‘chapping', it hopes to make new paradigm of open market. It is naturally considered that online shopping is done by "ONESELF," however, 11ST is
network advancement, the information communication sector is facing unparalleled changes that are dismantling the boundaries between the realms of different industries. To meet the challenges of these paradigm shifts, SK Telecom has mapped out a variety of future growth engines that continues to create new values for its customers. Our focus is on the development of the wireless Internet business