This paper is to design and implement the drone that supports wideband multimedia communication for long-range in maritime. The drone is an Unnamed Aerial Vehicle (UAV) that is controlled by a radio wave not by people boarding the machine. To develop a smart drone for high speed video streaming in long-range maritime, necessary techniques are […]
Feb
Feb
The oneM2M means intelligent information infra that handles information collected between things or between things and human, which has combined communication with ICT technology and has been utilized in many areas such as state information of remote thing, vehicle and human. The working group 3, in particular, has defined the message exchange protocol between entities […]
Jan
The Wi-Fi broadcasting system with its advantage of short installation time, low installation cost and broadband service, has expanded the availability throughout the places where sending large amount of multimedia data simultaneously to the majority of users is required such as classroom, stadium and meeting room. The Wi-Fi broadcasting system is composed of broadcasting server, […]
Jan
The oneM2M is a partnership project aimed at developing the technical specification of global service platform for the Internet of Things (IoT). The project deals with various parts, but WG3(: WG PRO)in particular, defines the exchanging message protocol between the entities(oneM2M Primitive), oneM2M core protocol to handle errors and bindings between core protocol and transport […]
Nov
In this paper, we propose a Logical Location Map to solve the problem of decreased accuracy of indoor physical location in the indoor environment. A lot of studies have been performed to reduce the indoor physical location errors. However, location errors still occur with changing environment, more research is needed. This paper aims to obtain […]
Aug
Wi-Fi broadcasting system is to offer multimedia streaming of the same quality to users even with increasing numbers of users by using broadcasting packet, not Unicast packet. However, the broadcast packet has high packet loss rate because it has not retransmission Medium Access Control (MAC) to recover the packet loss. Therefore, to prevent service quality […]
Aug
This paper analyzes delays and resource efficiency when DASH segment files are transmitted through IP-based next-generation broadcasting systems such as ATSC 3.0. DASH segment files are designed to support media content of various qualities in the DASH system. The size of a DASH segment file can vary even though they may have the same quality […]
Feb
This paper proposes the method through the mobilecommunicationnetwork when broadcast contents occur receiving errors in the Hybrid Broadcast/Mobile Network. Generally, the characteristic of the mobilecommunicationnetwork is pay network and peer-to-peer mobile. Therefore, it is necessary to reduce the amount of retransmission data in order to reduce the load of users and networks for recovery. This […]
Feb
The Wi-Fi based broadcasting system is mobile Internet Protocol Television(IPTV) technology, which transmits the multimedia content to a lot of local mobile users in real time. Unlike conventional Wi-Fi based multimedia streaming systems that use a separate unicast packets to serve each user, the Wi-Fi broadcast system uses the broadcast packets for scalability because one […]
Jan
Dynamic Adaptive Streaming over HTTP (DASH) is a technology in which the client is served by requesting the next media segments of appropriate quality. The client measures the current available bandwidth on the basis of the data transmission rate of the previous media segments. To obtain the best quality without generating buffering, it is necessary […]
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