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首页> 外文期刊>Vehicular Technology, IEEE Transactions on >Simultaneous Schedule-Based Transmission by Primary and Secondary Users for Heavy-Traffic Cognitive Radio Networks
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Simultaneous Schedule-Based Transmission by Primary and Secondary Users for Heavy-Traffic Cognitive Radio Networks

机译：重型交通认知无线电网络的主要和次要用户基于时间表的同时传输

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摘要

We develop cognitive radio networking methods for a heavy-traffic model in which the channel is always occupied by primary users. This contrasts with the interference-avoidance approach for the non-heavy-traffic model, in which primary users have idle times, and secondary users are allowed to use the channel at those idle times. We use an “underlay” approach to cognitive radio networking by allowing secondary users to share the channel with simultaneously transmitting primary users. Thus, secondary users can degrade the performance of primary users, and our goal is to ensure that the level of performance degradation is acceptable. This is accomplished by scheduling and coordinating the transmissions among users, as well as providing a safeguard for controlling the level of additional interference caused by transmissions from secondary users. We show that our methods can provide additional throughput for secondary users, while maintaining the performance of primary users at the specified level.
机译：我们为交通量大的模型开发了认知无线电网络方法，在该模型中，信道始终由主要用户占用。这与非繁忙模式的避免干扰方法相反，在该方法中，主要用户具有空闲时间，而次要用户则可以在那些空闲时间使用信道。我们通过允许次要用户与同时发送主要用户共享频道来对认知无线电网络使用“底层”方法。因此，次要用户可以降低主要用户的性能，我们的目标是确保性能下降的程度是可以接受的。这是通过调度和协调用户之间的传输以及为控制由次要用户的传输引起的附加干扰级别提供保障而实现的。我们证明了我们的方法可以为二级用户提供额外的吞吐量，同时将主要用户的性能保持在指定级别。

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