Journal of the Korea Society for Simulation (한국시뮬레이션학회논문지)

The Korea Society for Simulation (한국시뮬레이션학회)
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A Virtual Address Mapping Method for Interconnection between Terrestrial Communication Network and Underwater Acoustic Communication Network

지상 통신 네트워크와 수중음파 통신 네트워크의 상호연결을 위한 가상 주소 매핑 방법

  • Kim, Changhwa (Dept. of Computer Sci. & Eng., Gangneung-Wonju National University)
  • Received : 2018.08.06
  • Accepted : 2018.11.06
  • Published : 2018.12.30
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Abstract

The terrestrial communication network and the underwater acoustic communication network have very different communication characteristics each other in operational environments, communication media, propagation delay, frequency bandwidth, transmission speed, bit error rate, and so on. These different characteristics cause some different address schemes and different maximum transmission units and, as a result, these differences must form certainly obstacles to the intercommunication between a terrestrial communication network and an underwater acoustic communication network. In this paper, we presents a method to use the virtual addresses to resolve the interconnection problem caused by different address schemes between a terrestrial communication network and an underwater acoustic communication network, and, through a mathematical modeling, we analyze the performance on the message transceiving delay time in the underwater environment.

지상 통신 네트워크와 수중음파 통신 네트워크는 동작 환경, 통신 매체, 전파 지연 속도, 주파수 대역폭, 통신 속도, 비트 에러율 등에서 매우 다른 통신 특성을 갖는다. 이러한 다른 특성들로 인해 이들 두 통신 네트워크는 주소체계와 최대 패킷 크기에서 차이가 생기며, 결과적으로, 이 차이는 두 통신 네트워크를 상호연결 하는데 장애가 될 수밖에 없다. 본 논문은 지상 통신 네트워크와 수중음파 통신 네트워크 사이에서 서로 다른 주소체계로 인해 발생하는 상호연결 문제를 해결하기 위해 가상 주소를 이용하는 방법을 제시하고 수학적 모델링을 통해 수중 환경에서의 메시지 송수신 지연 시간에 대한 성능을 분석한다.

Keywords

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Fig. 1. Environment for the intercommunication between terrestrial network and UWA Network

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Fig. 2. Protocol stack for interworking between terrestrial network and UWA network

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Fig. 3. Message passing scenarios among a TR network,a gateway, and an UWA network

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Fig. 4. Virtual address table operations

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Fig. 5. Stepwise procedure in connection request message transmission phase (Phase 1)

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Fig. 6. Stepwise procedure in the phase of a virtual address record generation and insertion to the virtual address table (Phase 2) and in the phase of the connection request message transmission to UWA node (Phase 3)

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Fig. 7. Stepwise procedure in the phase of the connection request message processing and response message transmission to TR node via the gateway (Phase 4)

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Fig. 8. Stepwise procedure in the phase of the interconnection of two different address schemes by using the virtual address table (Phase 5) and in the phase of the response message transmission to TR node (Phase 6)

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Fig. 9. Message transceiving process in UWA communication area

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Fig. 10. Delay time (ms) according to nm and distavg between the gateway and the end UWA node

Table 1. Naming of the TR and UWA communication network protocol layers corresponding to network protocol layers (TR: TeRrestrial, UWA: UnderWater Acoustic, Comm.: Communication)

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Table 2. Main attributes of the virtual address table

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Table 3. Description of main attributes of the virtual address table

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Table 4. Notations used from Figure 5 to Figure 8

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Table 5. Modeling parameter notations

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Table 6. Model parameter values estimated from real system environments

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Table 7. Detailed delay time (ms) according to nm and distavg

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