tailieunhanh - Evaluation of Dynamic Bandwidth Allocation Algorithms in GPON Networks

In this paper, two approaches for Dynamic Bandwidth Allocation in GPON networks are proposed, andvalidated through simulations in the OPNET modeler. One approach address a Status Reporting scheme, where the bandwidth allocation originates from the client request. The second use a centralized Non Status Reporting scheme. Mời các bạn cùng tìm hiểu và tham khảo tài liệu.  | Joanna Ozimkiewicz Sarah Ruepp Lars Dittmann Henrik Wessing Sylvia Smolorz WSEAS TRANSACTIONS on CIRCUITS and SYSTEMS Evaluation of Dynamic Bandwidth Allocation Algorithms in GPON Networks Joanna Ozimkiewicz Sarah Ruepp Sylvia Smolorz Lars Dittmann Henrik Wessing Nokia Siemens Networks GmbH Co. KG Technical University of Denmark Munich DTU Fotonik Germany Kgs. Lyngby Denmark ozimki@ srru ladit hewe @ Abstract In this paper two approaches for Dynamic Bandwidth Allocation in GPON networks are proposed and validated through simulations in the OPNET modeler. One approach address a Status Reporting scheme where the bandwidth allocation originates from the client request. The second use a centralized Non Status Reporting scheme. Furthermore parameters to cope with variances in the traffic pattern is quantified. The results on performance scalability and efficiency show that Status Reporting is utilizing the bandwidth more efficient while the Non Status Reporting provides better QoS for real time services. Key-Words GPON dynamic bandwidth allocation DBA simulation status reporting OPNET 1 Introduction Bandwidth requirement for providing new services is increasing. Moreover different types of users have varying needs regarding the amount of bandwidth and transmission delays. Network providers are forced to think about new mechanisms that will distribute the bandwidth among the users and provide high network reliability. That leads to the increased interest in the optical networks suitable for Fiber to the Home FTTH and Fiber to the Building FTTB solutions. Creation of the networks in which each connected user obtains high QoS despite the variation of payment is too costly solution. This leads to high requirement for implementing mechanisms that will be responsible for the appropriate sharing of available resources. One of the access network technologies introducing high throughput low delays and advanced bandwidth control is .