• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2017년도 추계학술대회
• /
• pp.258-260
• /
• 2017

스마트 모빌리티는 차세대 친환경 이동수단으로 각광 받고 있어 시장이 매해 급성장 하고 있다. 그러나 전기를 동력으로 사용하는 기기 특성상 이용자의 몸무게나 주행 환경에 따라 모터 및 배터리는 제조사에서 표기하는 성능과 실제 성능과는 큰 차이를 보여 이용자에 따라 기기 이용 시 권장되는 주행 기준점이 없어 본래의 동작에 과부하 발생 빈도가 높아져 기기의 고장 및 파손이 늘어나고 있다. 본 논문에서는 이용자의 주행 상태를 측정 후 제조사 측에서 제공하는 권장 주행과는 별도로 실제 주행 시의 맞춤 권장 주행 안내 및 과부하 주행 상황 알림을 제공하는 어플리케이션을 설계하여 스마트 모빌리티 기기의 고장 및 파손은 물론 이용자의 안전까지 확보하고자 한다.

• 한국멀티미디어학회논문지
• /
• 제25권8호
• /
• pp.1069-1074
• /
• 2022

IP mobility can be handled in different layers of the protocol. Mobile IP has been proposed to handle the mobility of Internet hosts in the network layer. Recently, a new method based on the SIGMA mobility architecture has been proposed to support mobility management with reduced packet loss and latency. The location management structure is not suitable for frequent mobile handover due to the high mobility of the user with this transport layer solution. In this paper, we propose a location management optimization method in a mobile communication network by applying hierarchical location management using MMPs(Mobility Management Points) for transport layer mobility management. Therefore, we propose an efficient hierarchical mobility management structure even between heterogeneous wireless networks using MMPs for the probability that a mobile terminal can change multiple location areas between two messages and calls. The proposed method shows reduction in location update cost and data retrieval cost using MMPs, and as opposed to mobility appearing in time intervals with the minimum cost required to reach 90% of the stabilized cost, the mobility location update search, location It was found that the message processing cost per area was reduced.

• International journal of advanced smart convergence
• /
• 제4권1호
• /
• pp.71-87
• /
• 2015

Mobile users want to be provided with undisrupted network services when they navigate on the Next-Generation (NG) wireless networks. For that, interlocking with a heterogeneous network is important, but there have been few studies on the method for guaranteeing global mobility. Thus, this paper proposes the Proxy-LMA technique, the mobile IP-based global inter-networking system, to enhance global mobility and interoperability within the Next-Generation (NG) network environment. The purpose of the proposed Proxy-LMA system is to expand the boundary of the mobility with regards to the existing mobility management protocol (PMIPv6 and MIPv6) in order to guarantee global mobility and interoperability within the heterogeneous network environment. The results of the performance evaluation showed that the proposed Proxy-LMA system was more efficient than other methods from the standpoint of signaling cost and delay in the heterogeneous network environment.

• 드라이브 ㆍ 컨트롤
• /
• 제21권1호
• /
• pp.46-52
• /
• 2024

The advancement of autonomous driving technology has heightened the importance of Autonomous Mobile Robotics (AMR) within smart factories. Notably, in tasks involving the transportation of heavy objects, the consideration of weight in route optimization and path planning has become crucial. There is ongoing research on local path planning, such as Dijkstra, A^*, and RRT^*, focusing on minimizing travel time and distance within smart factory warehouses. Additionally, there are ongoing simultaneous studies on route optimization, including TSP algorithms for various path explorations and on minimizing energy consumption in mobile robotics operations. However, previous studies have often overlooked the weight of the objects being transported, emphasizing only minimal travel time or distance. Therefore, this research proposes route planning that accounts for the maximum payload capacity of mobile robotics and offers load-optimized path planning for multi-destination transportation. Considering the load, a genetic algorithm with the objectives of minimizing both travel time and distance, as well as energy consumption is employed. This approach is expected to enhance the efficiency of mobility within smart factories.

• 국제초고층학회논문집
• /
• 제9권1호
• /
• pp.81-85
• /
• 2020

Currently, urban mobility is rather two-dimensional: Connections between transportation solutions like elevators, escalators, moving walks, and metro stations are static. In the future, urban mobility will require a holistic view: Seamless transportation, enabled by innovative IoT technology, is a necessity. A dialogue between the city, its buildings and transportation systems, considering the specific needs and preferences of each and every citizen, must be adopted. Travelling through the city will become a lot more individualized, interactive and customized to specific requirements.

• International Journal of Internet, Broadcasting and Communication
• /
• 제12권2호
• /
• pp.51-58
• /
• 2020

With the emergence of the words Personal Mobility (P.M.) or Smart Mobility (S.M.), which are terms for personal transportation, the activities of related technologies are increasing with the research. Personal transportation is basically used as a short distance transportation method using electrical energy. As personal mobility became more popular, the resulting products and studies are spreading throughout the country. Most of the electric scooters, which are personal vehicles, are mostly imported from China. This is due to the fact that the price competitiveness of major components of electric scooters is owned in China. At this point, the domestic research direction is considered to be desirable in terms of composition and design of the electric scooter body. In this study, the models of portable electric scooters according to the number of wheels mounted on portable electric scooters were presented and the prototypes were produced accordingly. The number of wheels applied to the electric scooter was 2 and 3 and 4; the contents and advantages and disadvantages of the proposed portable electric scooter models were reviewed.

• 한국전자통신학회논문지
• /
• 제6권4호
• /
• pp.465-471
• /
• 2011

본 연구는 스마트폰 이용자들을 대상으로 스마트폰이 정부정책을 국민들에게 전달할 수 있는 수단으로 상정하고 그 가능성을 검토하였다. 그 결과를 간략하게 제시하면 다음과 같다. 첫째, 스마트폰의 서비스품질인 이동성은 스마트폰을 활용한 정부정책 전달에 대한 태도에 정적 영향을 미쳤다. 개인적합성은 정부정책 전달에 대한 인식도나 유용성에 정적 영향을 미쳤다. 스마트폰 유용성은 정부정책 전달에 대한 유용성에 정적 영향을 미쳤다. 둘째, 스마트폰의 시스템품질인 사용용이성은 정부정책 전달에 대한 인식도에 정적 영향을 미쳤다. 보안성은 정부정책 전달에 대한 인식도와 유용성, 그리고 태도에 부적 영향을 미쳤다. 서비스연결성은 정부정책 전달에 대한 인식도에 정적 영향을 미치는 것으로 나타났다. 셋째, 스마트폰을 활용한 정부정책 전달에 대한 유용성 및 태도는 스마트폰을 활용한 정부정책 전달에 대한 수용의도에 정적 영향을 미치는 것으로 나타났다.

• International journal of advanced smart convergence
• /
• 제7권4호
• /
• pp.197-205
• /
• 2018

Nowadays, wireless sensor networks (WSNs) have been widely adopted in structural health monitoring (SHM) systems for social overhead capital (SOC) public infrastructures. Structural health information, environmental disturbances and sudden changes of weather conditions, damage detections, and external load quantizing are among the capabilities required of SHM systems. These information requires an efficient transmission with which an efficient mobility management support for wireless networks can provide. This paper deals with the analysis of mobility management schemes in order to address the real-time requirement of data traffic delivery for critical SHM information. The host-based and network-based mobility management protocols have been identified and the advantages of network mobility (NEMO) enabled Proxy Mobile Internet Protocol version 6 (PMIPv6) have been leveraged in order to address the SHM information transmission needs. The scheme allows an efficient information transmission as it improves the handover performance due to shortened handover latency as well as reduced signaling overhead.

• 전력전자학회논문지
• /
• 제26권5호
• /
• pp.334-341
• /
• 2021

Operation modes and control strategies for single-phase mobility charging station utilizing photovoltaic (PV) generation and energy storage systems (ESS) are proposed. This approach generates electric power from PV to transmit the mobility, ESS, and then transfer it to the grid when surplus electric power is generated during daytime. However, the PV power cannot be generated during night-time, and ESS and the mobility system can be charged using grid power. The power balance control based on power fluctuations and the resonant current control that can compensate harmonic components have been added to increase the stability of the system. The MATLAB/Simulink simulation was carried out to verify the proposed control method, and the 2-kW single-phase grid-tied PV-ESS smart mobility charger was built and tested.

• 한국정보통신학회논문지
• /
• 제21권11호
• /
• pp.2128-2132
• /
• 2017

스마트 모빌리티는 차세대 친환경 이동수단으로 각광 받고 있어 시장이 매해 급성장 하고 있다. 그러나 전기를 동력으로 사용하는 기기 특성상 사용자의 몸무게나 주행 환경에 따라 모터 및 배터리는 제조사에서 표기하는 성능과 실제 성능과는 큰 차이를 보여 사용자에 따라 기기 이용 시 권장되는 주행 기준점이 없어 본래의 동작에 과부하 발생 빈도가 높아져 기기의 고장 및 파손이 늘어나고 있다. 본 논문에서는 사용자의 주행 상태를 측정 후 제조사 측에서 제공하는 권장 주행과는 별도로 실제 주행 시의 맞춤 권장 주행 안내 및 과부하 주행 상황 알림을 제공하는 어플리케이션을 설계하여 스마트 모빌리티 기기의 고장 및 파손은 물론 사용자의 안전까지 확보하고자 한다.