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首页> 外文期刊>IEEE transactions on mobile computing >Decentralized Bargain: A Two-Tier Market for Efficient and Flexible Dynamic Spectrum Access
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Decentralized Bargain: A Two-Tier Market for Efficient and Flexible Dynamic Spectrum Access

机译：分散的议价：高效，灵活的动态频谱访问的两层市场

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摘要

Market mechanisms have been exploited as important means for spectrum acquisition and access in cognitive radio networks. In this paper, we propose a two-tier market for decentralized dynamic spectrum access. In the proposed Tier-1 market, spectrum is traded from a primary user (PU) to secondary users (SUs) in a relatively large time scale to reduce signaling overhead. Then, driven by dynamic traffic demands, SUs set up the Tier-2 market to redistribute channels among themselves in a small time scale. More specifically, we use a Nash bargain game to model the spectrum acquisition of SUs in the Tier-1 market and derive the equilibrium prices. We then employ a strategic bargain game to study the spectrum redistribution in the Tier-2 market, where SUs can exchange channels with low overhead through random matching, bilateral bargain, and the predetermined market equilibrium price. We investigate how various factors, such as the availability of channels and bargain partners, matching strategies, and traffic dynamics, affect the market relationships. This work provides new understanding on the spectrum market and valuable guidelines to primary and secondary network operators.
机译：市场机制已被用作认知无线电网络中频谱获取和接入的重要手段。在本文中，我们提出了分散动态频谱访问的两层市场。在提议的第1层市场中，频谱在相对较大的时间范围内从主要用户（PU）交易到次要用户（SU），以减少信令开销。然后，在动态流量需求的驱动下，SU建立了Tier-2市场，以在较小的时间范围内重新分配渠道。更具体地说，我们使用Nash讨价还价博弈对一级市场中SU的频谱获取进行建模，并得出均衡价格。然后，我们使用策略性讨价还价博弈研究第二层市场中的频谱重新分配，在那里，SU可以通过随机匹配，双边讨价还价和预定的市场均衡价格交换低开销的信道。我们调查各种因素（例如渠道和讨价还价伙伴的可用性，匹配策略和流量动态）如何影响市场关系。这项工作为频谱市场提供了新的理解，并为一级和二级网络运营商提供了宝贵的指导。

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