document: An effective feedback control mechanism for DiffServ architecture As a scalable QoS -LRB- Quality of Service -RRB- architecture , Diffserv -LRB- Differentiated Service -RRB- mainly consists of two components : traffic conditioning at the edge of the Diffserv domain and simple packet forwarding inside the DiffServ domain . DiffServ has many advantages such as flexibility , scalability and simplicity . But when providing AF -LRB- Assured Forwarding -RRB- services , DiffServ has some problems such as unfairness among aggregated flows or among micro-flows belonging to an aggregated flow . In this paper , a feedback mechanism for AF aggregated flows is proposed to solve this problem . Simulation results show that this mechanism does improve the performance of DiffServ . First , it can improve the fairness among aggregated flows and make DiffServ more friendly toward TCP -LRB- Transmission Control Protocol -RRB- flows . Second , it can decrease the buffer requirements at the congested router and thus obtain lower delay and packet loss rate . Third , it also keeps almost the same link utility as in normal DiffServ . Finally , it is simple and easy to be implemented
doc_bio_tags: O O B I O O B O O O O B O O O O O O O B O O O O O O O O O O B I O O O O O B O O O B I O O B O O B O O O O O O O O O O O O O O B O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O B I O B O O O O O O O O O O O O O O O O O O O O B O O O O O O O B O O O O O B O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O
extractive_keyphrases: qos diffserv traffic conditioning packet forwarding af feedback mechanism fairness tcp feedback control
abstractive_keyphrases: qos architecture