关键词: Chord HBLS 动态负载均衡

Abstract:

Resource locating and load balancing are essential problems in P2P networks. A two-tier overlay network model is presented in this paper. Some consecu  tive nodes form an unstructured group and different groups are connected by a globally structured overlay with the Chord protocol. The model uses the Hi  lbert-based level search（HBLS） and the dynamic load balancing policy of a two-tier ring structure on top of the overlay network. This strategy has not t only the characteristics of load balancing but also enough flexibility for searching. Simulation tests show that this method is superior to the origin al Chord in the aspeets of resource locating and load balancing.

Key words: （Chord, HBLS, dynamic load balancing）