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Power synergy to enhance DCI reliability for OFDM-based mobile system optimization

机译:功率协同效应可增强DCI可靠性,从而实现基于OFDM的移动系统优化

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In Orthogonal Frequency Division Multiplexing (OFDM)-based mobile networks (e.g., Long Term Evolution Advanced), Downlink Control Information (DCI) in a Physical Downlink Control Channel (PDCCH) plays a unique role in carrying control signaling and scheduling information, which enables the flexibility and diversity of radio resource utilization. Due to system configuration limitations, power dimension is the only potential to enhance DCI reliability. Based on this motivation, we apply the synergy concept to power dimension: called Power Synergy, which can deal with negative effects caused by Cell-specific Reference Signal (CRS) power boosting, and also allow flexibly power lending between OFDM symbols in the physical control region. Under the constraints of the Block Error Rate (BLER) threshold 10 given for PDCCHs and the CRS full-cell coverage requirement, performance tests reveal there are significant profits (for example, 10-dB gain available for enhancing DCI reliability in the worst case) from the power headroom in the physical control region. This valuable gain is helpful to accommodate emerging mobile broadband services (e.g., mobile health) in LTE/LTE-A networks.
机译:在基于正交频分复用(OFDM)的移动网络(例如,高级长期演进)中,物理下行链路控制信道(PDCCH)中的下行链路控制信息(DCI)在承载控制信令和调度信息方面扮演着独特的角色,从而实现了无线电资源利用的灵活性和多样性。由于系统配置的限制,功率尺寸是增强DCI可靠性的唯一潜力。基于这种动机,我们将协同概念应用于功率维度:称为功率协同,它可以处理由特定于小区的参考信号(CRS)功率提升引起的负面影响,并且还可以在物理控制中灵活地在OFDM符号之间进行功率借出地区。在为PDCCH提供的块错误率(BLER)阈值10和CRS全小区覆盖要求的约束下,性能测试表明存在可观的利润(例如,在最坏的情况下可用于增强DCI可靠性的10 dB增益)从物理控制区域中的功率余量。这一宝贵收益有助于在LTE / LTE-A网络中适应新兴的移动宽带服务(例如,移动健康)。

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