Ultra-Dense Heterogeneous Relay Networks: A Non-Uniform Traffic Hotspot Case
Ultra-Dense Heterogeneous Relay Networks: A Non-Uniform Traffic Hotspot Case
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DOI：
10.1109/mnet.2017.1600295
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发表时间：
2017-07
期刊：
影响因子：
9.3
通讯作者：
W. Peng;Min Li;Yuzhou Li;Wei Gao;Tao Jiang
中科院分区：
文献类型：
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作者：
W. Peng;Min Li;Yuzhou Li;Wei Gao;Tao Jiang
具有非均匀流量热点的超密集异构网络（UD-Het- Nets）是未来无线网络的重要应用场景，然而，由于大量热点用户导致的严重拥塞，给高效的框架和算法设计带来了挑战。考虑到这些挑战，本文首先提出了一种由宏基站网络和超密集中继网络组成的两层干扰感知异构中继网络架构。特别是，我们开发了一种方法来制定一个QoE感知的优化问题，包连接和延迟，这两者都是至关重要的热点用户在我们的框架。对于这个问题，我们进一步设计了一个具有成本效益的资源分配算法，达到几乎相同的性能作为最佳的。
Ultra-dense heterogeneous networks (UD-Het- Nets) with non-uniform traffic hotspots are important scenarios for future wireless networks, which, however, impose challenges on efficient framework and algorithm design due to the heavy congestion incurred by massive hotspot users. Considering these challenges, this article first develops a two-layer interference-aware heterogeneous relay network architecture that consists of macro base station networks and ultra-dense relay networks. Particularly, we develop an approach to formulate a QoE-aware optimization problem that enfolds connectivity and delay, both of which are crucial for hotspot users in our framework. Regarding this problem, we further devise a cost-efficient resource allocation algorithm that achieves almost the same performance as the optimal one.