如图1所示，前四种Web服务仅包含基本功能的数据，而最后两个主要使用业务逻辑来达到向零售商发送帐单的目的。

As shown in Figure 1, the first four Web services contain only the data base functions, while the last two primarily use business logic to achieve the goal of sending a bill to the intended retailer.

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为了减少入口节点处的数据突发时延，提出了一种基于业务流带宽约束的前向资源预留（FRR-BC）策略。

A forward resource reservation scheme based on traffic bandwidth constraints (FRR-BC) is proposed in order to reduce the latency of data bursts at the ingress node.

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为了保证视频质量，可以采用前向纠错编码(FEC)来提高视频数据传输的可靠性。

For guaranteeing video quality, FEC (Forward Error Correction) can be adopted to improve the reliability of video data transmission.

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