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 metroaccess 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. INDEX TERMS user satisfaction, multi-OLT PON, max-min fairness, dynamic bandwidth allocation, virtual passive optical network

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In this paper, a multi-dimensional quantitative model is firstly founded for evaluating communication network value, and the quantification of the abstract concept of network value is realized. By analyzing various factors that influence the evaluation of network value from multiple perspectives, an index system of multi-dimensional network value evaluation is established. By adopting the analytic hierarchy process (AHP) method, not only the weight of each dimension is reasonably determined, but also the weight of different indicators in the second dimension is determined. By the characteristics of each dimension and its weight in the evaluation system, a multi-dimensional quantitative model for evaluating communication network value is constructed. By analyzing the value of Ethernet passive optical network (EPON), the rationality of the proposed quantitative model is demonstrated.

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In this article, a (network value)-based inter-slice and intra-slice adaptive dynamic bandwidth allocation algorithm is proposed for the coexistence scenario of URLLC slices, eMBB slices, and mMTC slices in 5G fronthaul networks. The network value model applicable to network slicing is constructed to provide a means for the value evaluation of virtual networks. According to the bandwidth requirements of the slices, the adaptive inter-slice bandwidth allocation is realized to ensure that the fronthaul network can obtain the maximum economic value under different load states. For the service characteristics of three slices, three intra-slice bandwidth allocation algorithms are proposed, respectively, to realize adaptive ONU bandwidth allocation. It not only meets the differentiated service demands of different slices, but also enables each slice to obtain the maximum QoS value. By simulation and analysis, the effectiveness of the proposed algorithm is demonstrated.