Ultra-dense SCNs have been regarded as a promising technology to handle the future data traffic explosion. However, the complicated relationships among large scale users and cells practically demand a cooperative grouping mechanism to account for the shortage of resources in SCNs. A group buying market mechanism provides a win-win situation and effective resource allocation in the view of economics. With additional decision information being provided, the context awareness enhances and improves the group buying mechanism. In this article, we propose a CAGB mechanism to allocate the resources in ultra-dense SCNs. The feasibility, necessity, and effectiveness of CAGB are analyzed first. Then, we introduce the group buying mechanism and some common context awareness. The relationship between context awareness and group buying is also analyzed. Some important technologies in SCNs are discussed in the view of CAGB, such as load balancing, spectrum management, and cooperative caching. Then, the graphical CFGs of CAGB are presented to match the complicated network topologies in SCNs. Two CAGB-based use cases about spectrum market and cooperative caching are presented. Finally, future research issues about context awareness, grouping mechanism, and buying mechanism are discussed.

中文翻译：

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超密集小型蜂窝网络中的情境感知群体购买：团结就是力量

超密集SCN被认为是处理未来数据流量爆炸的有前途的技术。但是，大规模用户和小区之间的复杂关系实际上需要一种协作的分组机制来解决SCN中的资源短缺问题。从经济学的角度来看，团购市场机制提供了双赢的局面和有效的资源配置。通过提供其他决策信息，上下文意识增强并改善了团购机制。在本文中，我们提出了CAGB机制来分配超密集SCN中的资源。首先分析了CAGB的可行性，必要性和有效性。然后，我们介绍了团购机制和一些常见的上下文意识。还分析了情境意识和团购之间的关系。从CAGB的角度讨论了SCN中的一些重要技术，例如负载平衡，频谱管理和协作缓存。然后，提出了CAGB的图形CFG，以匹配SCN中复杂的网络拓扑。提出了两个基于CAGB的有关频谱市场和协作式缓存的用例。最后，讨论了有关情境感知，分组机制和购买机制的未来研究问题。