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首页> 外文期刊>Journal of network and computer applications >Video Data Delivery using Slotted Patching
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Video Data Delivery using Slotted Patching

机译：使用时隙修补的视频数据传递

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In the request-based scheme, a patching channel is initiated on arrival of a request in an interarrival time of two adjacent multicast channels. If two requests are received in a short duration in an interarrival time, two patching channels are needed to service them. Both these channels deliver almost the same data, thus, wasting the bandwidth. This problem may be addressed in two ways: using higher level patching technique, or forcing the first request to wait for the second one. Using higher level patching technique makes the system more complex and thus usually not preferred. In the second case, the bandwidth usage certainly reduces, but the length of the waiting time by the first request for the second request is the main issue. In this paper, this issue is addressed by dividing the video duration into uniform time slots such that there is at least one request in a time slot for initiating the patching channel. The proposed scheme is named as Video Data Delivery using Slotted Patching. In this scheme, the patching channels download much less video data than the request-based scheme and thus require less bandwidth. This scheme may not provide immediate services to all users unlike the request-based scheme, but the user's waiting can be made arbitrarily small without using much resources unlike the request-based scheme.
机译：在基于请求的方案中，在两个相邻的多播信道的到达时间中，在请求到达时启动修补信道。如果在间隔时间内在短时间内接收到两个请求，则需要两个修补通道为它们提供服务。这两个通道几乎传送相同的数据，从而浪费了带宽。可以通过两种方式解决此问题：使用更高级别的修补技术，或强制第一个请求等待第二个请求。使用更高级别的修补技术会使系统更加复杂，因此通常不受欢迎。在第二种情况下，带宽使用肯定会减少，但是主要问题是第一个请求对第二个请求的等待时间。在本文中，通过将视频持续时间划分为统一的时隙，以便在一个时隙中至少有一个请求启动修补通道，来解决此问题。提议的方案称为使用时隙修补的视频数据传递。在此方案中，修补通道下载的视频数据比基于请求的方案少得多，因此需要的带宽也更少。与基于请求的方案不同，该方案可能无法为所有用户提供即时服务，但是可以在不使用大量资源的情况下任意减小用户的等待时间，这与基于请求的方案不同。

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