• Title, Summary, Keyword: 동적 대역 할당

Search Result 86, Processing Time 0.029 seconds

Dynamic Bandwidth Allocation Algorithm of TWDM PON (TWDM PON의 동적대역할당 알고리즘)

  • Hong, Sung Hak;Han, Man Soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.743-744
    • /
    • 2013
  • This paper proposes a new DBA (dynamic bandwidth allocation) algorithm for a TWDM PON (time and wave-division multiplexing passive optical network) which is based on XGPON (10-Gigibit-Capable PON). Modifying a DBA algorithm of an XGPON, the proposed algorithm not only allocates the transmission slot but also assigns a wavelength to use for each ONU.

  • PDF

Fixed Multi-Thread Polling based Dynamic Bandwidth Allocation in Long-Reach PON (LR-PON에서 고정형 다중 스레드 기반의 동적대역할당)

  • Choi, Su-il;Kim, Jinsul
    • Journal of Digital Contents Society
    • /
    • v.18 no.6
    • /
    • pp.1207-1211
    • /
    • 2017
  • Long-Reach PON (LR-PON) is a broadband access network using passive optical network (PON) technology which the reach is extended to 100 km or higher. A major challenge in LR-PON is that the propagation delay between OLT and ONUs is increased by a very significant amount. To effectively and fairly distribute the upstream bandwidth dynamically in LR-PON, we propose a new periodic and multi-thread polling based dynamic bandwidth allocation (DBA) algorithm. We compare the proposed algorithm with traditional DBAs and show its advantage on average packet delay. Numerical results are analyzed under varying offered loads.

Cyclic Polling-Based Dynamic Bandwidth Allocation for Differentiated Classes of Service in Ethernet Passive Optical Networks (EPON망에서 차등 CoS 제공을 위한 주기적 폴링 기반의 동적 대역 할당 방법)

  • 최수일
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.28 no.7B
    • /
    • pp.620-627
    • /
    • 2003
  • Ethernet passive optical networks (EPONs) are an emerging access network technology that provide a low-cost method of deploying optical access lines between a carrier's central office and customer sites. Dynamic bandwidth allocation (DBA) provides statistical multiplexing between the optical network units for efficient upstream channel utilization. To support dynamic bandwidth distribution, 1 propose an cyclic polling-based DBA algorithm for differentiated classes of service in EPONs. And, I show that an interleaved polling scheme severely decreases downstream channel capacity for user traffics when the upstream network load is low. To obtain realistic simulation results, I used synthetic traffic that exhibits the properties of self-similarity and long-range dependence I then analyzed the network performance under various loads, specifically focusing on packet delays for different classes of traffic.

Dynamic Bandwidth Algorithm of TWDM PON for Power Saving (전력 절감형 TWDM PON의 동적대역할당 방법)

  • Hong, Sung Hark;Han, Man Soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.699-700
    • /
    • 2014
  • This paper proposes a new dynamic wavelength and bandwidth allocation algorithm for TWDM PON (time and wavelength division multiplexed passive optical network) which consists of an OLT (optical line termination) and multiple ONU (optical network unit). The proposed algorithm dynamically limits the number of the upstream wavelengths based on the request amount of ONUs to save power.

  • PDF

Dynamic Bandwidth Allocation Algorithm of XG-PON using Traffic Monitoring (Traffic Monitoring 방식의 XG-PON 동적대역할당 방법)

  • Hong, Sung Hark;Han, Man Soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.705-706
    • /
    • 2014
  • This paper proposes a new dynamic bandwidth allocation algorithm for an XG-PON (10-Gbps-capable passive optical network) system. In the XG-PON system, an ONU (optical network unit) does not explicitly send it request to an OLT (optical line termination). The OLT monitors the upstream bandwidth usage of the ONU to estimate the request of the ONU. Then the OLT performs a dynamic bandwidth allocation process based on the estimated requests.

  • PDF

Performance Evaluation of Dynamic Bandwidth Allocation Algorithm of TWDM PON for Power Saving (TWDM PON의 전력절감용 동적대역할당 성능평가)

  • Hong, Sung Hark;Han, Man Soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.150-151
    • /
    • 2014
  • This paper evaluates performance of a dynamic wavelength and bandwidth allocation algorithm of TWDM PON (time and wavelength division multiplexed passive optical network) which consists of an OLT (optical line termination) and multiple ONU (optical network unit). The allocation algorithm reduces the number of upstream wavelengths to save power. Using self-similar traffic, we simulate TWDM PON systems and measure the average packet delay and the average number of upstream wavelengths.

  • PDF

Dynamic Bandwidth Allocation Algorithm of XG-PON using Traffic Monitoring (Traffic Monitoring을 이용한 XG-PON 동적대역할당 알고리즘)

  • Hong, Sung Hark;Han, Man Soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.152-153
    • /
    • 2014
  • This paper proposes a new dynamic bandwidth allocation algorithm for an XG-PON (10-Gbps-capable passive optical network) system in which an ONU (optical network unit) does not explicitly send its request to an OLT (optical line termination). To estimate the request of the ONU, the OLT monitors the upstream bandwidth usage of the ONU and periodically allocates a probe slot to the ONU.

  • PDF

A New Dynamic Bandwidth Assigmnent Algorithm for Ethernet-PON (Ethernet-PON을 위한 새로운 동적 대역 할당 알고리즘)

  • Jang, Seong-Ho;Jang, Jong-Wook
    • The KIPS Transactions:PartC
    • /
    • v.10C no.4
    • /
    • pp.441-446
    • /
    • 2003
  • Earlier efforts on optical access concentrated on the design of PONs for the collection and distribution portion of the access network. The PON architecture is very simple but it requires a MAC protocol for control of upstream traffic. The MAC protocol must support QoS (Quality of Service) administration function by various traffic class, efficient dynamic bandwidth assignment function, CDV (Ceil Delay Variation) minimization function etc. This paper proposes a dynamic bandwidth assignment algorithm of the MAC protocol for a broadband access network using an Ethernet Passive Optical Network supporting various traffic class. We compare our proposed with MDRR algorithm using simulation, and confirmed that our proposed Request-Counter algorithm produces shorter average cell delay.

Performance Analysis of a Dynamic Bandwidth Allocation Scheme for improving the delay of the real time traffic in an EPON (EPON에서 실시간 트래픽의 지연성능 향상을 위한 동적 대역할당방안의 성능분석)

  • Park, Chul-Geun;Lee, Yu-Tae;Chung, Hae;You, Geon-Il;Kim, Jong-An
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.28 no.11B
    • /
    • pp.1023-1030
    • /
    • 2003
  • In this paper, we deal with an effective dynamic bandwidth allocation(DBA) scheme in order to support the qualify of services (QoS) in the customer access network which supports various applications with own service requirements. we discuss the DBA scheme for upstream traffic in the EPON which support both the delay sensitive traffic such as voice and real-time video and non-real time traffic such as data and BE. We propose the new DBA scheme which guarantee the delay performance of the real time traffic and utilize the upstream bandwidth effectively in the limited resource environment. We analize the delay performance of the proposed scheme by simulation.