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arXiv 1608.05660cs.ITmath.IT
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具有异构失真要求的编码缓存和内容交付

Coded Caching and Content Delivery with Heterogeneous Distortion Requirements

Qianqian Yang, Deniz Gündüz

摘要:

缓存辅助编码的内容交付的研究与不同的服务质量(QoS)的要求,由不同的平均失真目标指定的设备。该网络由一个服务器持有一个独立的内容数据库,并配备了不同容量的本地缓存的用户。用户缓存在低流量期间由服务器填充,而不知道特定的用户需求。与当前文献相反,其假设用户请求文件的全部,假设系统中的用户具有不同的失真要求;因此,每个用户请求来自数据库的单个文件以不同的失真级别提供。在这项工作中,我们的目标是表征服务器需要通过无错误的共享链路传输,以满足所有可能的需求组合在所要求的失真水平,考虑集中式和分散式缓存放置的最低交付率。

英文摘要:

Cache-aided coded content delivery is studied for devices with diverse quality-of-service (QoS) requirements, specified by a different average distortion target. The network consists of a server holding a database of independent contents, and users equipped with local caches of different capacities. User caches are filled by the server during a low traffic period without the knowledge of particular user demands. As opposed to the current literature, which assumes that the users request files in their entirety, it is assumed that the users in the system have distinct distortion requirements; and therefore, each user requests a single file from the database to be served at a different distortion level. Our goal in this work is to characterize the minimum delivery rate the server needs to transmit over an error-free shared link to satisfy all possible demand combinations at the requested distortion levels, considering both centralized and decentralized cache placement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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