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Effective social-context based message delivery using ChitChat in sparse delay tolerant networks

机译：基于稀疏延迟容忍网络中的聊天基于基于社交环境的信息传递

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Delay tolerant networks (DTNs) have garnered much interest with the wide-spread adoption of portable smart devices capable of wirelessly connecting with one another, thus enabling the formation of a network for opportunistic data dissemination. This type of network is useful in a variety of applications where other form of network communication strategies are unavailable, such as an on-the-ground tactical military network in an active battlefield or an emergency network formed immediately after a catastrophic disaster. DTNs also provide opportunities for various other interesting applications such as location-based social networking, interests-based data dissemination, and geolocal advertising. One persistent challenge for DTNs is achieving sufficient message delivery due to the dynamic, unpredictable, and opportunistic nature of inter-device connections; this challenge is exacerbated when such connections are sparsely available. In this paper, a novel social-context based message routing system, called ChitChat, is proposed with the focus on message delivery through sparsely-connected DTNs. ChitChat is a hybrid geographic/data-centric routing system designed to exploit each user's social (or mission) interests to opportunistically learn of multi-hop paths through the network, and to derive the social semantics of geographic locations using user travel itineraries and multi-hop social relationships. In turn, this information is used to make distributed routing decisions based on the likelihood an encountered node will connect with others capable of successfully delivering a message. An analysis of network sparsity is conducted against five real-world datasets. Through simulations using the two highest-sparsity real-world datasets, ChitChat is capable of achieving more successful deliveries against three recent state-of-the-art DTN routing schemes while incurring lower costs against flooding.
机译：延迟宽容网络（DTN）对能够彼此无线连接的便携式智能设备的广泛传播采用来获得多兴趣，从而能够形成用于机会数据传播的网络。这种类型的网络在各种应用中有用，其中其他形式的网络通信策略不可用，例如在灾难性的灾难之后立即形成的处于活动战场或紧急网络的在地面战术军事网络中。 DTN还为各种其他有趣的应用提供了基于位置的社交网络，基于利益的数据传播和地理透视广告的机会。由于机器间连接的动态，不可预测和机遇性质，DTN的一个持续挑战是实现足够的信息交付;当这种连接稀疏可用时，这种挑战会加剧。在本文中，提出了一种名为Chitchat的新型社交环境的消息路由系统，其通过稀疏连接的DTN焦点对消息传送。 Chitchat是一种混合地理/数据为中心的路由系统，旨在利用每个用户的社交（或使命）兴趣来通过网络机会学习多跳路径，并使用用户旅行行程和多重派生地理位置的社会语义。跳跃社会关系。反过来，此信息用于基于遇到的节点将与能够成功传递消息的其他人连接的可能性来进行分布式路由决策。对五个现实世界数据集进行了对网络稀疏性的分析。通过使用两个最高稀疏现实世界数据集的模拟，秘诀在于对最近的三个最先进的DTN路由方案进行更成功的交付，同时导致较低的洪水成本。

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