Hongxiang Shao

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The user association is still a key technical challenge in small-cell networks due to significantly difference from traditional macro-cell networks. For avoiding blindness of pursuing higher date rate and achieving the more rational user association, a novel method to associate user to small base station (SBS) based on user quality of experience (QoE) is(More)
The next generation of small cell base stations (SCBSs), with multi-mode specialty, can offload part of traffic load to unlicensed spectrum to alleviate burden in licensed band. In this paper, we propose an interference graph to capture the coupling interference relationship in unlicensed band between small cell. Based on the interference graph, we(More)
In this paper, we investigate the capacity offloading over unlicensed band for two-tier dual-mode small cell networks. We formulate this problem as a Stackelberg game. Specifically, the macro base station (MBS) is modeled as leader and small base stations (SBSs) are followers. MBS adopts a traffic flow pricing mechanism and broadcasts the price information(More)
How to dynamically utilize the spectrum and efficiently enhance spectrum utilization for a variety of clients' demands is still an open issues. This paper studies the dynamic access network with database-assisted, where spectrum brokers (SBs) compete to provide service for secondary users (SUs) with different QoS demands and budget. To this end, we(More)
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