• Journal of the Institute of Electronics Engineers of Korea SD
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• v.44 no.3 s.357
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• pp.43-51
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• 2007

OneNAND flash combines the advantages of NAND and NOR flash, and has become an alternative to the former. But the advanced features of OneNAND flash are not utilized effectively in demand paging systems designed for NAND flash. We propose delayed dual buffering, a demand paging system which fully exploits the random-access I/O interface and dual page buffers of OneNAND flash demand paging system. It effectively reduces the time of page transfer from the OneNAND page buffer to the main memory. On average, it achieves and 28.5% reduction in execution time and 4.4% reduction in paging system energy consumption.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.4
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• pp.55-64
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• 2007

Aiming at solving the problems associated with existing wireless paging systems, this paper proposed a 4W1H+L+PI concept to context-aware information structure, based on which, a new wireless paging system named 119 system is developed under ubiquitous environment. Bemuse of the adoption of RFID tags in the wireless paging system, hazard and malfunction rates are reduced, thus accuracy is guaranteed. Besides, response time is shortened comparing with existing systems. In the future, if emergency aid information system can be implemented under the ubiquitous computing environment combined with sensor network, then aid service of good quality will be provided.

• Journal of Korea Multimedia Society
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• v.13 no.6
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• pp.901-910
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• 2010

$IP^2$, as an extended concept of the next generation IMT network, is a concept of basically supporting mobility using two steps of IP address (i.e. IPha (IP Host address) and IPra (IP routing address)) in IP backbone network. Current $IP^2$system has a shortcoming of excess usage of network resources caused by sending paging messages to all cells in LA (Location Area) in paging procedure. Considering the evolving direction of network, which is taking mobility with various speed and integration of devices into consideration, this shortcoming must be overcome. In this paper, we proposed a method to reduce time and memory for paging by maintaining current information of MN (Mobile Node) not in Active state with proxy server. Performance evaluation based on NS-2 simulations has shown that the efficiency of network resources is improved in the proposed method.

• IEMEK Journal of Embedded Systems and Applications
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• v.6 no.1
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• pp.32-40
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• 2011

For a NAND booting based embedded system, an application program on the NAND flash memory is downloaded to the RAM when the system is booted. In this case, the application program exists in both the RAM and the NAND flash so the RAM usage is increased. In this paper, we suggested the demand paging technique for the decreasing of the RAM usage for OS-less NAND booting based embedded systems. As a result of a benchmark test, 40~80% of the code memory usage was reduced with below 5% of execution time delay.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2723-2725
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• 2003

The research on Automatic Meter Reading(AMR) using PSTN. Power Line and Wireless network, is currently lead by the utilities, and it is intended to improve the ordinary manual reading method, so more accurate reading and management can be achieved. In this thesis, AMR system based on two-way paging was studied.

• Information and Communications Magazine
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• v.14 no.10
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• pp.83-93
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• 1997

7월1일 고속 페이징 서비스가 SK Telecom에서 자체 개발한 APS(Advanced Paging System)로 이루어지게 되었다. 본고에서는 시스템의 구조적 설계 개념에 대하여 간략히 소개하고자 한다. 이를 위하여 먼저 무선호출의 서비스 특성 분석과 이와 따른 시스템의 구조 정립 방법을 소개한 후, 적용 기술을 CTI(Computer Telephony Integration) 및 지능망 기술과 연계하여 설명하고자 한다. 또한 무선호출분야의 향후 발전방향에 대한 기술적 전망 분석과 이에 대한 현 시스템의 적응성에 대해서도 살펴보고저 한다.

• The Journal of the Korea institute of electronic communication sciences
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• v.3 no.3
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• pp.188-194
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• 2008

In this paper, we propose for improving QoS in Hospital wireless network using Cellular-IP/PRC(Paging Route Cache) with Paging Cache and Route Cache in Cellular-IP and propose for performance of realtime and non-real time handoff service using Handoff state machine Paging Route Cache. Although the Cellular-IP/PRC technology is devised for mobile internet communication, it has its vulnerability in frequent handoff environment. This handoff state machine using differentiated handoff improves quality of services in Cellular-IP/PRC Suggested algorithm shows better performance than existing technology in wireless mobile internet communication environment. When speech quality is secured considering increment of interference to receive in case of suppose that proposed acceptance method grooves base radio station capacity of transfer node is plenty, and moat of contiguity cell transfer node was accepted at groove base radio station with a blow, groove base radio station new trench lake acceptance method based on transmission of a message electric power estimate of transfer node be. Do it so that may apply composing PC(Paging Cache) and RC(Routing Cache) that was used to manage paging and router in radio Internet network in integral management and all nodes as one PRC(Paging Router Cache), and add hand off state machine in transfer node so that can manage hand off of transfer node and Roaming state efficiently, and studies so that achieve connection function at node. Analyze benevolent person who influence on telephone traffic in system environment and forecasts each link currency rank and imbalance degree, forecast most close and important lake interception probability and lake falling off probability, GoS(Grade of Service), efficiency of cell capacity in QoS because applies algorithm proposing based on algorithm use gun send-receive electric power that judge by looking downward link whether currency book was limited and accepts or intercept lake and handles and displays QoS performance improvement.

• Journal of the Korean Operations Research and Management Science Society
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• v.26 no.3
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• pp.53-63
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• 2001

An efficient mobility management for mobile stations plays an important role in mobile communication network. This paper studies the mobility management scheme that combines a distance-based registration(DBR) and a selective paging (SP). We introduce an analytical model based on 2-dimensional random walk mobility model and evaluate the performance of the proposed mobility management scheme using the model to determine the optimal size of location area that results in the minimum signaling traffic on radio channels. Numerical results are provided to demonstrate the performance of the proposed mobility management scheme under various circumstances. These results can be used effectively in design and evaluation of registration methods considering the system circumstances.

• Electronics and Telecommunications Trends
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• v.4 no.4
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• pp.34-46
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• 1989

Paging system이란 전화망 등의 전송매체를 통하여 Pager를 소지하고 있는 가입자에게 호출이나 데이터 서비스를 제공하는 것을 말한다. 국내의 경우 161.42MHz의 carrier frequency를 사용하여 전국을 8개의 지역권(1)으로 분할하여 Paging service를 제공하고 있다. 본고에서는 시스팀 차원이 아닌 단말기 차원에서 Pager의 구성부품들과 각 구성품의 기능들을 파악하였고 pager의 국내 생산 기술 현황을 조사 정리 하였다.

• IE interfaces
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• v.19 no.2
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• pp.168-173
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• 2006

In the Reporting Cell Location Management (RCLM) system, a subset of cells in the network is designated as the reporting cells. Each mobile terminal performs location update only when it enters one of these reporting cells. When a call arrives, the paging is confined to the reporting cell the user last reported and the neighboring bounded non-reporting cells. Frequent location update may result in degradation of quality of service due to interference. Miss on the location of a mobile terminal will necessitate a search operation on the network when a call comes in. We must decide the number of reporting cells and which cell should be reporting cell to balance the registration (location update) and search (paging) operations to minimize the cost of RCLM system. This paper proposes a ranking ant colony system (RACS) for optimization of RCLM system.