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Keywords: EPON OLT ONU User-oriented hierarchical bandwidth scheduling algorithm QoS a b s t r a c t Ethernet passive optical networks (EPONs) are being designed to deliver different quality of service (QoS) to carry heterogeneous traffic of end users. For this purpose, hierarchical scheduling is needed for upstream bandwidth allocation, with high-level(More)
The Ethernet passive optical network (EPON) has emerged as one of the most promising solutions for next generation broadband access networks. Designing an efficient upstream bandwidth allocation scheme with differentiated services (DiffServ) support is a crucial issue for the successful deployment of EPON, carrying heterogeneous traffic with diverse quality(More)
OBJECTIVE To search for an excellent therapy for patients with large-angle exotropia. METHODS Strabotomy was performed on the master eyes in the 41 cases (master eye group) and slave eyes in the other 41 cases (slave eye group) with large-angle exotropia (>/= 60(Delta)). The post-operative visual acuity, ocular position, visual function and fixation, the(More)
In this paper, we present a new service model for aggregate scheduling. This model combines a guaranteed rate (GR) scheduler with a guaranteed rate fair aggregator (GRFA), With fair aggregation, our model can provide guaranteed services to individual flows in the presence of flow aggregation. In addition, our mode] can utilize fully the configured(More)
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