• Title/Summary/Keyword: network service interface

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Multi-Service Multi-Plug-In Switching System (멀티서비스 멀티플러그인 교환 시스템)

  • 이정규;김영부
    • Proceedings of the IEEK Conference
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    • 1999.06a
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    • pp.145-148
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    • 1999
  • The ability to rapidly create and deploy new and novel services in response to market demands will be the key factor in determining the success of the future service provider. This goal may be approached from different directions. One of them is an open interface making the functionalities of a network element programmable and usable by outside entities. In this paper, we describe several aspects of this new, hot technical area and introduce related standard activities. In addition, we present a new switching system called MSMP (Multi-Service Multi-Plug-In), which is based on the open programmable interface concept, and describe its architecture and main functionalities of its components.

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The NNI Interface Model of the ATM-Based Information Infra-Network of Korea (국내 ATM 기반 초고속정보통신망의 NNI 적용 모델 연구)

  • Yang, Seon-Hui;Jeong, Tae-Su;Kim, Eun-A;Choe, Jun-Gyun
    • The Transactions of the Korea Information Processing Society
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    • v.6 no.3
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    • pp.729-741
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    • 1999
  • ATM networks are widely deployed as the network that is capable of supporting multimedia services efficiently now. To date, a large portion of ATM connections, particularly in the WAN environment, have been of a permanent virtual circuits-requiring management intervention for set-up and tear-down. However, switched virtual circuits are required to support a range of desired characteristics on demand, to a reachable end user. To establish, maintain and release on-demand call/connections, the user-network interface(UNI) and node-node interface(NNI) signalling capabilities are required. Two protocols have been specified for NNI signalling within a public network: the broadband integrated-services user part(B-ISUP) protocol specified by the ITU-T, and the private network-network interface(PNNI) protocol specified by the ATM Forum. PNNI offers different type of internetwork or internodal interface from the traditional B-ISUP approach favored to date public network operators. In spite of its name, PNNI may find its place in network service provide networks as well as in private networks. Thus many public network operators and ATM equipment manufacturers are still unable to choose the NNI interface architecture of their system. In this paper, we survey the characteristics of the B-ISUP and PNNI protocols, and investigate the applicability issue of these specifications to the ATM-based Information Infra-Network of Korea. Analyzing the characteristics of the two protocols and clarifying the NNi requirements of the ATM-based Information Infra-Network of Korea, we propose that the B-ISUP protocol is more suitable than PNNI.

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Experimental Performance Analysis of the Data Link Layer of Foundation Fieldbus (실험 모델을 이용한 Foundation Fieldbus의 데이터링크계층의 성능평가)

  • Son, Byung-Kwan;Hong, Seung-Ho
    • Proceedings of the KIEE Conference
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    • 2002.11c
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    • pp.426-429
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    • 2002
  • The data link layer (DLL) of Foundation Fieldbus (FF) includes both token-passing and scheduling services. Periodic data are transmitted via the scheduling service, while time-critical and time-available data are transmitted via the token-passing service. This study developed a network interface board that implements the DLL of FF. Using the network interface board, this study experimentally evaluates the delay performance of the DLL of FF. This study measured the delay performance with respect to the change of the DLL parameters of FF, and investigated the relationship between the DLL parameters and network performance. The study also compared the experimental results with the results obtained from an analytical model.

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A Study on ATM Network Management System Supporting M4 Interface (M4 Interface를 지원하는 ATM 네트워크 관리 시스템에 관한 연구)

  • Lee, Beom;Choi, Young-Su;Chung, Jin-Wook
    • The Transactions of the Korea Information Processing Society
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    • v.6 no.11S
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    • pp.3367-3378
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    • 1999
  • ATM technology, which acts as a representative high-speed bandwidth technology, plays an important role in Internet environment. ATM network, supporting QoS(Quality of Service) and various traffic characters in high speed, configures many VPC(Virtual Path Connection)/VCC(Virtual Channel Connection). It is important to guarantee the QoS of each connection and it is necessary for the network manager to search element affecting the QoS of VPC/VCC and to control ATM network correctly. In the paper, the management information of VPC/VCC, that ATM network manager Using the fault notification for ATM switch, we can manage the configuration, fault and performance of ATM network. Thus, we extracted the configuration, fault and performance monitoring item from the ATM-MIB and SNMP M4 Network Element View MIB. And we designed the ATM network configuration, fault and performance management system based on the extracted item.

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Hybrid Home Network Prefix Model for Supporting Inter-Technology Handover in Proxy MIPv6 Domains (Proxy MIPv6 도메인에서 Inter-Technology Handover 제공을 위한 Hybrid Home Network Prefix 모델)

  • Hong, Yong-Geun;Kim, Young-Hyun;Pack, Sang-Heon;Youn, Joo-Sang
    • The KIPS Transactions:PartC
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    • v.18C no.2
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    • pp.111-118
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    • 2011
  • Recently, with the popularity of smartphones, an interest in multi-networking service through wireless multi-interface of a mobile node is increased. Also, wireless networking technology for using wireless multi-interface has been studied. As the related work, in the IETF Netext WG, the extension of PMIPv6 protocol for multi-interface support is being discussed. Existing PMIPv6 protocol includes the functions for simultaneous access over multi-interfaces of a mobile node and inter-technology handover between multi-interfaces of the mobile node. However, in case of the existing protocol, the problem occurs when inter-technology handover is performed after simultaneous access on the PMIPv6 domain, this problem is the discontinuous of simultaneous connections. Therefore, the PMIPv6 Protocol cannot support flow based multi-homing service. In this paper, as a way to solve the problem, Hybrid Home Network Prefix scheme is proposed.

A Study of limitation of Service Area by transmission delay in LMDS System (LMDS 시스템에서 전파지연시간이 서비스 영역에 미치는 영향에 관한 연구)

  • 박두일;김동현최광주오성환
    • Proceedings of the IEEK Conference
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    • 1998.10a
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    • pp.347-350
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    • 1998
  • 본 논문에서는 최근 광대역 무선 가입자망으로 각광받고 있는 LMDS(Local Multipoint distribution Service)시스템에서 Head-End 의 AIU(Air Interface Unit)와 HUB 사이의 거리에 따른 전송지연 시간과 HUB 와 가입자 장치(CPE:Customer Premises Equipment)내의 NIU(Network Interface Unit)간의 전송 지연 시간에 의하여 서비스 반경이 제한되어 지는 것에 관하여 살펴보고 적절한 서비스 반경에 대하여 제안하였다.

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Middleware Structure for Module-based Personal Robot (모듈기반 퍼스널 로봇을 위한 미들웨어 구조)

  • Yoon, Gun;Kim, Hyung-Yuk;Kim, Hong-Seok;Park, Hong-Sung
    • Journal of Institute of Control, Robotics and Systems
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    • v.10 no.5
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    • pp.464-474
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    • 2004
  • This paper proposes a middleware structure for the module-based personal robot, which can run on heterogeneous network interfaces and provides users easy interface-method regardless of underlying heterogeneous interfaces and convenient exchange of modules. The proposed middleware is divided into three layers of a streaming layer (SL), a network adaptation layer (NAL) and a network interface layer (NIL). The streaming layer manages application transactions using middleware services and provides user a uniform interfaces to the proposed middleware. The network adaptation layer manages a message-routing and provides naming service and it is a core of the proposed middleware. And the network interfaces layer manages dependent parts of heterogeneous network interfaces such as IEEE1394, USB, Ethernet, and CAN (Control Area Network). This paper implements the proposed middleware structure, where 3 types of interfaces of IEEE 1394, USB and Ethernet are used, and measures response times among those interfaces.

Performance Analysis of Sequential and Parallel Interworking Model for Connection Control of VB5.2 Interface (VB5.2 인터페이스의 연결 제어를 위한 순차형 및 병렬형 연동 방식의 성능 분석)

  • Kim, Choon-Hee;Cha, Young-Wook;Han, Ki-Jun
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.9
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    • pp.2948-2957
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    • 2000
  • A broadband access network in B- ISDN subscriber network, plays a role of concentration or multiplexing of various subscribers into a service node. To establish an end-to-end ATM connection, interworking functions between \'B5.2 interface's connection protocol and the signalling protocol, are perfonned at the service node. A sequential interworking model and a parallel interworking model were proposed for these interworking functions. The sequential interworking model proceeds the signalling protocol of network node after the response of VB5.2 interface protocol. On the other hand, the parallel interworking model proceeds the signalling protocol and the VB5.2 interface protocol simultaneously. In this paper, we analyze and simulate above two interworking models in tenns of a connection setup delay and completion ratio, when call requests with eBR and VBR transfer capability arrive at the service node. We observed that the completion ratios of the two interworking models are quite closed. However the connection setup delay of parallel interworking model is improved by about 33% compared with that of the sequential interworking model.

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Analysis of E2E Latency for Data Setup in 5G Network (5G 망에서 Data Call Setup E2E Latency 분석)

  • Lee, Hong-Woo;Lee, Seok-Pil
    • Journal of Internet Computing and Services
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    • v.20 no.5
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    • pp.113-119
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    • 2019
  • The key features of 5G mobile communications recently commercialized can be represented by High Data Rate, Connection Density and Low Latency, of which the features most distinct from the existing 4G will be low Latency, which will be the foundation for various new service offerings. AR and self-driving technologies are being considered as services that utilize these features, and 5G Network Latency is also being discussed in related standards. However, it is true that the discussion of E2E Latency from a service perspective is much lacking. The final goal to achieve low Latency at 5G is to achieve 1ms of air interface based on RTD, which can be done through Ultra-reliable Low Latency Communications (URLLC) through Rel-16 in early 20 years, and further network parity through Mobile Edge Computing (MEC) is also being studied. In addition to 5G network-related factors, the overall 5G E2E Latency also includes link/equipment Latency on the path between the 5G network and the IDC server for service delivery, and the Processing Latency for service processing within the mobile app and server. Meanwhile, it is also necessary to study detailed service requirements by separating Latency for initial setup of service and Latency for continuous service. In this paper, the following three factors were reviewed for initial setup of service. First, the experiment and analysis presented the impact on Latency on the Latency in the case of 1 Data Lake Setup, 2 CRDX On/Off for efficient power, and finally 3H/O on Latency. Through this, we expect Low Latency to contribute to the service requirements and planning associated with Latency in the initial setup of the required services.

QoS-enabled Next Generation Local Area Network for IP-based Convergence Services (IP 기반 통합서비스를 위한 QoS 가능 차세대 LAN)

  • Lee, Kyou-Ho;Sung, Kil-Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.12
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    • pp.2166-2172
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    • 2006
  • This paper presents a quality-of-service-enabled next generation local area network architecture which can provide efficiently convergence services over the Internet protocol. The basic concept of the architecture is to combine such three principle technologies as programmable switched network quality-of-service resource management and Internet protocol based network convergence. We discuss system entities and technologies development, which constitute the proposed network. The architecture of the network is then described. Implementation of systems verifies the proposed technologies. The network as a next generation local area network can provide quality-of-service-enabled real-time communication services as well as existing data traffic, and the open programmable interface can facilitates to adopt cost-effectively emerging new services or functionalities.