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首页> 外文期刊>Wireless Communications Letters, IEEE >A Method for Accessing Spatial Spectrum Holes for Relay Based Cognitive Cellular Networks
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A Method for Accessing Spatial Spectrum Holes for Relay Based Cognitive Cellular Networks

机译：基于中继的认知蜂窝网络访问空间频谱空洞的方法

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摘要

In cellular networks, usually users at the cell edge experience degraded Quality-of-Service (QoS) due to poor signal strength and severe interference. This paper attempts to resolve this issue by applying cognitive radio features to a relay based cellular network. Spatial holes in the spectrum, licensed to another (primary) network, are accessed for relaying purpose such that the outage probability of the cumulative interference to primary users is below limit. This relaxes the requirement for bandwidth reservation needed for conventional relaying. Moreover, interference from adjacent cells in relay to user link is eliminated which leads to extended coverage for such cognitive relays. The method is tested in a simulated TD-LTE sub-urban scenario and found to outperform the conventional relaying.
机译：在蜂窝网络中，由于信号强度差和干扰严重，通常小区边缘的用户会体验到服务质量（QoS）下降的情况。本文试图通过将认知无线电功能应用于基于中继的蜂窝网络来解决此问题。访问频谱（许可给另一个（主要）网络）的空间空洞以进行中继，以使对主要用户的累积干扰的中断概率低于限制。这放宽了常规中继所需的带宽预留的要求。而且，消除了中继站到用户链路中相邻小区的干扰，这导致了这种认知中继站的覆盖范围扩大。在模拟的TD-LTE郊区场景中对该方法进行了测试，发现该方法优于常规中继。

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