Abstract
In this paper, a fair resource allocation mechanism based on user satisfaction in multiple optical line terminal (multi-OLT) virtual passive optical network (VPON) is proposed. By introducing user satisfaction functions, the satisfaction of users can be quantified. By presenting multi-OLT VPON in metro-access optical network (MAON), different priority services can be effectively handled separately. Based on user satisfaction, a fair resource allocation mechanism called double fair dynamic bandwidth allocation scheme (DFDBAS) is proposed. DFDBAS is a combination of two algorithms: wavelength fair allocation (WFA) algorithm and timeslot fair allocation (TFA) algorithm. In TFA algorithm, max-min fairness (MMF) algorithm is presented to allocate bandwidth for high priority service and Lagrange multiplier method is implemented to allocate bandwidth for low priority service. By implementing DFDBAS, not only user delay satisfaction can be improved, but also user bandwidth satisfaction can increase. By the simulation and analysis, the effectiveness of the proposed algorithms is demonstrated. Compared with modified limited service (LS) algorithm, DFDBAS makes both delay satisfaction and bandwidth satisfaction increase by at least 30% when the load is greater than 1.
Highlights
As we all know, passive optical network has been widely used in access network
In [5] and [6], we proposed a-based virtual passive optical network (MS-virtual PON (VPON)) in metro-access optical network (MAON) which can implement the syncretism of multiple systems such as time division multiplexing passive optical network (TDM-PON), wavelength division multiplexing passive optical network (WDM-PON), and orthogonal frequency division multiplexing passive optical network (OFDM-PON)
In this paper, a fair resource allocation mechanism based on user satisfaction in multi-optical line terminal (OLT) VPON has been proposed
Summary
Passive optical network has been widely used in access network. With the rapid growth of network traffic, the traditional time division multiplexing passive optical network (TDM-PON) will not meet people’s demand for bandwidth. N. Zhan et al.: Fair Resource Allocation Based on User Satisfaction in Multi-OLT VPON concerned, the utility function is mainly used to quantify user satisfaction. In [10], a unified user satisfaction function is proposed, which normalizes multiple network parameters into the same function for calculation These researches are studied in wireless network. In [12] and [13], mixed integer linear programming (MILP) models are utilized to implement resource allocation and improve the network performance in PON-based data center network. A bandwidth allocation scheme called double fair dynamic bandwidth allocation scheme (DFDBAS) is proposed to improve user satisfaction in multi-OLT VPON.
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