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Optimal strategies for floating anchored information with partial infrastructure support

机译：浮动锚定信息与部分基础架构支持的最佳策略

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摘要

Floating Content (FC) is a communication paradigm to locally share ephemeral content without direct support from infrastructure. It is based on constraining the opportunistic replication of content in a way that strikes a balance between minimizing resource usage and maximizing content availability among the intended recipients. However, existing approaches to management of FC schemes are unfit for realistic scenarios with non-uniform user distributions, resulting in heavy overdimensioning of resources allocated to FC. In this work, we propose a new version of FC, called Cellular Floating Content (CFC), which optimizes the use of bandwidth and memory by adapting the content replication and storage strategies to the spatial distribution of users, and to their mobility patterns. The main idea underlying our approach is to partition users into small "local communities", and to optimally weight their contributions to the FC paradigm according to their specific mobility features, and to the resources required to achieve a target performance level. We characterize numerically the properties of the optimal strategies in a variety of mobility patterns and traffic conditions, showing the accuracy of our approach, and the significant savings it enables in the amount of resources necessary to run FC, which in a realistic setup can be as high as 27% with respect to traditional FC dimensioning strategies. (C) 2020 Elsevier Inc. All rights reserved.
机译：浮动内容（FC）是一个通信范例，用于本地分享短暂内容，而不直接支持基础设施。它基于限制内容的机会主义复制，以便在最小化资源使用和最大化预期收件人之间的内容可用性之间进行平衡的方式。然而，对于具有非统一用户分布的现实情景，现有的FC方案的现有方法是不适用的，导致分配给FC的资源过多的过度提升。在这项工作中，我们提出了一种新版本的FC，称为蜂窝浮动内容（CFC），通过将内容复制和存储策略调整到用户的空间分配以及其移动模式来优化带宽和存储器的使用。我们方法的主要思想是将用户分为小“本地社区”，并根据其特定移动特征以及实现目标性能级别所需的资源，最佳地重量其对FC范例的贡献。我们在数字上表征了各种移动模式和交通状况的最佳策略的性质，展示了我们方法的准确性，并且在运行FC所需的资源中实现的大量节省，在现实的设置中可以是如此关于传统的FC尺寸策略，高达27％。 （c）2020 Elsevier Inc.保留所有权利。

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