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中文摘要：
该文提出了一种基于数据包的网络计费（Per-Packet Billing，PPB）策略，给出了PPB计费的基小概念模型及其简化实现方案。针对FTP、HTTP和VolP这3种业务，将PPB计费策略与传统计费策略进行了仿真对比。仿真结果表明：PPB计费策略在网络拥塞控制方面具有明显效果，丢包率也大大降低，并且其端到端时延对各类业务的影响很小。采用PPB计费，不仅能使不同用户享有公平性，服务提供商也可利用价格杠杆优化网络流量，合理配置网络资源。
英文摘要：
In this paper, the principle of the network pricing strategy （Per-Packet Billing, PPB） which is based on per-packet is proposed, the concept model of PPB and the simple implementation scheme is also presented. Aimed at the three kinds of services - FTP, HTTP and VolP, comparison between PPB and traditional pricing strategy has been accomplished by NS2 simulation. The results show that the performance of PPB is better than the traditional pricing strategy in congestion control, and the packet-loss-rate is lower. Although the end-to-end delay increased, the influence to each kind of services is very small. PPB is fairness to each kind of user, and ISPs carl also use price lever to optimize the network traffic and configure network resources properly.
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