• Title/Summary/Keyword: Next Generation Convergence Network

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Trustworthy authentication and key management for NSDR ad-hoc network (안정적인 동적 복합 ad-hoc 네트워크와 이에 대한 신뢰성 있는 키 인증과 키 관리)

  • Rhee, Chung Sei
    • Convergence Security Journal
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    • v.12 no.4
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    • pp.49-55
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    • 2012
  • In this paper, we consider the limit of the previous works for ad-hoc network, then propose a dynamic routing scheme which employs a 2-tier hierarchical structure. We adopt the advantages of proactive and reactive routing scheme for efficient network management. We define this method as NSDR(New Secure Dynamic Routing) scheme. We also propose a trustworthy authentication and key management for the proposed ad-hoc network. We currently study the possibility that ad-hoc networks can provide a service such as key management and authentication for the next generation mobile network.

A Scheme for Improving Handover Feasibility of Mobile Terminal in Broadband Convergence Network (광대역 통합 망에서 이동단말의 핸드오버 가용성 향상을 위한 방안)

  • Yu, Myoung-Ju;Lee, Jong-Min;Choi, Seong-Gon
    • The Journal of the Korea Contents Association
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    • v.8 no.4
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    • pp.71-78
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    • 2008
  • We propose the scheme that supports continuously service when a user tries to contact new target network in broadband convergence network even though the network resource for the service is not enough. The proposed scheme transforms original service capacity into suitable QoS for the target network using the scalable service techniques in the oncoding/decoding and supports handover for the user. We analyzed the handover blocking probability of two schemes using queueing system to show the improvement of performance by the proposed scheme. Subsequently, we showed that the handover blocking probability in the proposed scheme is lower than that in the existing scheme.

Technology Trends and Research Direction of 6G Mobile Core Network (6G 모바일 코어 네트워크 기술 동향 및 연구 방향)

  • Ko, N.S.;Park, N.I.;Kim, S.M.
    • Electronics and Telecommunications Trends
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    • v.36 no.4
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    • pp.1-12
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    • 2021
  • The competition to lead the next generation of mobile technologies, 6G, is underway while the deployment of 5G has not been implemented worldwide. ITU-R plans to develop technical requirements and standards after completing the 6G Vision by 2023. It can be considered too early to have a concrete view of the 6G core network architecture from this timeline. However, major stakeholders have started making their presence felt by publishing their views. From updated analysis on the technology and service trends proposed, we present a list of research directions on 6G core network from several perspectives: distribution of network functions to nearer edge locations; future fixed-mobile convergence, including low earth orbit satellites; highly-precise QoS guarantee; supporting an extremely wide variety of service requirements; AI-native automation and intelligence; and aligning with the evolution of radio access network.

Extracting and Transmitting Video Streams based on H.264 SVC in a Multi-Path Network (다중경로 네트워크에서 H.264 SVC에 기반한 비디오 스트링 추출 및 전송 기법)

  • Ryu, Eun-Seok;Lee, Jung-Hwan;Yoo, Hyuck
    • Journal of KIISE:Information Networking
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    • v.35 no.6
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    • pp.510-520
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    • 2008
  • These days, the network convergence for utilizing heterogeneous network on mobile device is being very actively studied. However, understanding characteristics of physical network interfaces and video encoder is needed for using the network convergence technologies efficiently. Thus, this paper proposes an optimized method for streaming video data through different network paths depending on data characteristics and channel condition. Accordingly, unlike the traditional methods, this study divides scalable coded videos by layer importance, the importance of stream information, and the importance in consideration of video decoder's robustness and selectively sends the data via multiple channels. And the experimental results show over 1dB increment in PSNR. The result of this study will provide an optimized video transmission technique in the next generation network convergence environment in which mobile devices have multiple network interfaces.

A reinforcement learning-based network path planning scheme for SDN in multi-access edge computing

  • MinJung Kim;Ducsun Lim
    • International journal of advanced smart convergence
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    • v.13 no.2
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    • pp.16-24
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    • 2024
  • With an increase in the relevance of next-generation integrated networking environments, the need to effectively utilize advanced networking techniques also increases. Specifically, integrating Software-Defined Networking (SDN) with Multi-access Edge Computing (MEC) is critical for enhancing network flexibility and addressing challenges such as security vulnerabilities and complex network management. SDN enhances operational flexibility by separating the control and data planes, introducing management complexities. This paper proposes a reinforcement learning-based network path optimization strategy within SDN environments to maximize performance, minimize latency, and optimize resource usage in MEC settings. The proposed Enhanced Proximal Policy Optimization (PPO)-based scheme effectively selects optimal routing paths in dynamic conditions, reducing average delay times to about 60 ms and lowering energy consumption. As the proposed method outperforms conventional schemes, it poses significant practical applications.

QoS Model for Supporting high Quality Multimedia Services (고품질의 멀티미디어 서비스 제공을 위한 QoS 모델)

  • Song, Myung-Won;Lim, In-Seub;Jung, Soon-Key
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.9B
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    • pp.802-812
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    • 2008
  • This paper proposes QoS Model which has tested and analyzed the capabilities of provisioning multimedia service in high speed Internet environment. We have tested quality measurement test for VoIP/MoIP, VoD, IPTV services and analyzed the level of QoS and QoS degradation by constructing test laboratory consisted of 46 subscribers which provided by 3 telecom operators. Besides, We propose QoS Model to apply for BcN application based on analysis result and prove proposed model by constructing test lab in KOREN environment. It is expected that telecom will use this results as a valuable information to construct All-IP network based on NGN(NGN:Next Generation Network).This paper proposes QoS Model which has tested and analyzed the capabilities of provisioning multimedia service in high speed Internet environment. It is expected that telecom will use this results as a valuable information to construct All-IP network based on NGN.

An Extended SIP-based Network Architecture and Session Management Methods for Internet QoS (QoS를 지원하는 확장 SIP 기반 네트워크 구조 및 세션 제어 방법)

  • Shin Kang-Sik;Lee Jong-Hoon;Hong Kyung-Pyo;Yoo Sang-Jo;Cho Eun-Hee
    • Journal of Korea Multimedia Society
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    • v.9 no.1
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    • pp.73-88
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    • 2006
  • With the development of Next Generation convergence Network, the current Internet needs a new network architecture and new session establishment methods, which can support various applications requiring differentiated traffic processing and high quality of service instead of the conventional best-effort service. It is expected that, in next generation network based on All-IP. SIP will play an important role in the session establishment between the end to end user terminals. In this paper, we propose a new network architecture that can provide quality of service based on SIP using the QoS enabled SIP servers and policy servers, and we also propose a new session establishment method that apply the user's demands participating the session establishment when setting up the session using the SIP. Through simulations under various environments, we show the parameter ranges in terms of server capacity and the number of users in access networks to achieve reasonable delay bounds.

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Flow-Based QoS Management Architectures for the Next Generation Network

  • Joung, Jin-Oo;Song, Jong-Tae;Lee, Soon-Seok
    • ETRI Journal
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    • v.30 no.2
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    • pp.238-248
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    • 2008
  • At the extremes of the complexity-performance plane, there are two exemplary QoS management architectures: Integrated Services (IntServ) and Differentiated Services (DiffServ). IntServ performs ideally but is not scalable. DiffServ is simple enough to be adopted in today' core networks, but without any performance guarantee. Many compromise solutions have been proposed. These schemes, called quasi-stateful IntServ or stateful DiffServ, however, have not attracted much attention due to their inherently compromising natures. Two disruptive flow-based architectures have been recently introduced: the flow-aware network (FAN) and the flow-state-aware network (FSA). FAN's control is implicit without any signaling. FSA's control is even more sophisticated than that of IntServ. In this paper, we survey established QoS architectures, review disruptive architectures, discuss their rationales, and points out their disadvantages. A new QoS management architecture, flow-aggregate-based services (FAbS), is then proposed. The FAbS architecture has two novel building blocks: inter-domain flow aggregation and endpoint implicit admission control.

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A Study on Path Selection Scheme for Fast Restoration in Multilayer Networks (신속한 다계층 보호 복구를 위한 경로선택 방식 연구)

  • Cho, Yang-Hyun;Kim, Hyun-Cheol
    • Convergence Security Journal
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    • v.12 no.3
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    • pp.35-43
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    • 2012
  • The explosive growth of Internet traffic cause by smart equipment such as smart phone has led to a dramatic increase in demand for data transmission capacity and network control architecture, which requires high transmission rates beyond the conventional transmission capability. Next generation networks are expected to be controlled by Generalized Multi-Protocol Label Switching(GMPLS) protocol suite and operating at multiple switching layers. In order to ensure the most efficient utilization of multilayer network resources, effective global provisioning that providing the network with the possibility of reacting in advance to traffic changes should be provided. In this paper, we proposes a new path selection scheme in multilayer optical networks based on the vertical PCE architecture and a different approach to efficiently exploit multiple PCE cooperation.

A Traffic Model based on the Differentiated Service Routing Protocol (차별화된 서비스제공을 위한 트래픽 모델)

  • 인치형
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.10B
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    • pp.947-956
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    • 2003
  • The current IP Routing Protocolspacket networks also need to provide the network QoS based of DiffServ, RSVP, MPLStraffic model which is standardized as IETF reference model for NGN. The first topic of this paper is to propose Traffic-Balanced Routing Protocol(TBRP) to process existing best effort traffic. TBRP will process low priority interactive data and background data which is not sensitive to dealy. Secondly Hierarchical Traffic-Traffic-Scheduling Routing Protocol(HTSRP) is also proposed. HTSRP is the hierarchical routing algorithm for backbone and access networkin case of fixed-wireless convergence network. Finally, HTSRP_Q is proposed to meet the QoS requirement when user want interactive or streaming packet service. This protocol will maximize the usage of resources of access layer based on the QoS parameters and process delay-sensitive traffic. Service classes are categorized into 5 types by the user request, such as conversational, streaming, high priority interactive, low priority interactive, and background class. It could be processed efficiently by the routing protocolstraffic model proposed in this paper. The proposed routing protocolstraffic model provides the increase of efficiency and stability of the next generation network thanks to the routing according to the characteristic of the specialized service categories.