Radio Resource Control Schemes for D2D Communications

摘要

作为第五代移动通信(5G，5th Generation Mobile Communication)的关键技术之一，终端直通通信(Device-to—Device Communications，D2D)技术可以显著提高蜂窝网络通信的吞吐量、数据传输速率、频谱效率和能量效率。但是D2D通信在分配无线资源和功率资源时会导致蜂窝系统中手机用户和D2D用户之间的干扰。因为用户使用电池有限的设备，所以功率（能量）效率占主导地位，而现有的大部分研究集中在通过优化应用程序和减小电池消耗等方式优化能源效率算法上。
　　为此，本文提出为用户设备(UE)增加射频能量采集器，从而在不取消电池使用的情况下增加其使用寿命。同时研究能源资源的有效配置，分析小区内和小区间的干扰、电池寿命和发射功率，最后整体分析蜂窝网络的性能增益。
　　本文根据3GPP LTE系统中D2D通信的辅助切换，提出将D2D链路周期扩展到交叉（重叠）区域之外，以保持最大化卸载数据和视频流的稳定性。
　　本文通过能量消耗最小和信噪比最高的方式对D2D对或分组进行中继任务分配。作为前期工作的延伸部分，将通过自适应模式选择和频谱分配方案提高蜂窝与D2D用户的性能。

目录

声明

Acknowledgements

Abstract

摘要

Table of Contents

Chapter Ⅰ Overview

1．1 Research Background

1．2 Domestic and International Research Status

1．3 sumect Research content and Key Points

Chapter Ⅱ Theoretical Background

2．2 Device-to-Device in Cellular Networks

2．2．1 Raclio Resource Considerations

2．2．2 Procedure

2．2．3 Network Role

2．2．4 Business Aspects

2．3 Power Control Problem

2．4 Resource Allocation Problem

Chapter Ⅲ Energy-Harvesting Radio Resource Allocation for D2D Underlay Communications

3．1 Brief Introduction

3．2 Main Concepts

3．2．1 D2D Communications Under-laying Cellular Networks

3．2．2 Power Consumption in Smart Cellular Phones

3．2．3 Radio Frequency Energy Harvesting

3．3 System Description

3．4 Performanee Evaluation

3．4．1 Channel Allocation Level

3．4．2 Power Control Level

3．5 Simulation Results

3．5 Conclusion

Chapter Ⅳ Extended Assisted D2D Handover

4．1 Brief Introduction

4．2 System Model

4．3 Analyzing D2D Assisted Handover Model

4．3．1 Proposed Mathematical Model

4．3．2 Validating Analytical Model

4．4．Conclusion

Chapter Ⅴ Group Cooperative D2D Relay in Cellular Networks

5．1 Brief Introduction

5．1．1 Underlay D2D Communications

5．1．2 Overlay D2D Communications

5．2 D2D Communications in Cellular Networks

5．3 Cooperative D2D Communieations

5．3．1 Underlay／Overlay Mode

5．3．2 Cooperative Relay Mode

5．3．3 Group Cooperative Relaying

5．4 Mode Selection and Channel Assignment

5．5 Simulation Results

5．6 Conclusion

Chapter Ⅵ Summary and Prospect

Conclusion

References

Curriculum Vitae of Author