【摘要】 <正> 一、引言 QoS中的路由问题可以形式地表述成在一个带权的简单无向图G(V,E,W)中寻找适合条件的一条路径或一棵树。其中,V是节点集,代表路由器或交换机;E是边集,代表节点之间的线路;W是赋给边的权值集,与传统的网络不同,这里的权往往是多元偶,代更多还原

【Abstract】 The next-greneration high-speed networks are expected to suppot a wide range of delay-sensitive multimedia applications. They need a different routing algorithm from the conventional one. The goal of the new algorithm is twofold: (1)satisfying the QoS requirements for every admitted connections,and(2)achieving global efficiency in resource utilization. Thus,most of problems in QoS routing area have multiple constraints which make them NP-Hard. Until now,the generally effcient algorithm has not been found. In this paper,we pose two algorithms for PCPO problems common in QoS communication,and analyze respective characteristics and uses.更多还原