免授權頻譜共享原理與技術

第1 章 緒論····································································································1
1.1 無線電頻譜························································································1
1.2 靜態的頻譜管理··················································································2
1.3 免授權頻譜共享的提出·······································································3
1.4 免授權頻段現有用戶WiFi 系統···························································5
1.5 免授權頻譜共享方案···········································································6
1.5.1 LWA···························································································8
1.5.2 LWIP ··························································································8
1.5.3 MulteFire······················································································8
1.5.4 LTE-U·························································································9
1.5.5 LTE-LAA··················································································.10
1.5.6 LTE-eLAA·················································································.12
1.5.7 5G NR-U···················································································.13
參考文獻·································································································.14
第2 章 LTE-LAA 方案的相關性能分析························································.16
2.1 引言································································································.16
2.2 LTE-LAA 方案的性能分析·······························································.17
2.2.1 系統模型···················································································.17
2.2.2 LTE-LAA 方案···········································································.18
2.2.3 數學建模···················································································.20
2.2.4 退避機制···················································································.24
2.2.5 目標參數分析·············································································.26
2.2.6 模擬結果與性能分析····································································.28
2.2.7 本節小結···················································································.36
2.3 捕獲效應下的LTE-LAA 性能分析···················································.37
2.3.1 系統模型···················································································.37
2.3.2 LTE-LAA 方案和WiFi DCF 機制····················································.39
2.3.3 捕獲模型···················································································.40
2.3.4 數學建模···················································································.43
2.3.5 模擬結果與性能分析····································································.49
2.3.6 本節小結···················································································.58
2.4 不完美頻譜探測下的LTE-LAA 性能分析·········································.58
2.4.1 網絡模型···················································································.59
2.4.2 WiFi DCF 機制和LBT 機制···························································.59
2.4.3 不完美頻譜探測下的LTE-LAA 共存性能研究···································.60
2.4.4 模擬結果與性能分析····································································.69
2.4.5 本節小結···················································································.79
2.5 本章總結·························································································.79
參考文獻·································································································.80
第3 章 LTE-LAA 方案的智能優化·······························································.82
3.1 引言································································································.82
3.2 Q 學習算法······················································································.83
3.2.1 Q 學習算法理論··········································································.83
3.2.2 智能體動作選擇策略····································································.84
3.3 基於混沌Q 學習的CWS 選擇算法···················································.86
3.3.1 系統模型···················································································.86
3.3.2 算法設計···················································································.87
3.3.3 模擬結果與性能分析····································································.92
3.3.4 本節小結···················································································100
3.4 基於Q 學習的能量閾值優化算法·····················································100
3.4.1 網絡模型···················································································101
3.4.2 算法設計···················································································101
3.4.3 算法流程···················································································103
3.4.4 模擬結果與性能分析····································································104
3.4.5 本節小結···················································································111
3.5 本章總結·························································································111
參考文獻·································································································112
第4 章 D2D 通信下的免授權頻譜共享方法···················································114
4.1 引言································································································114
4.2 基於MADRL 的D2D 通信資源聯合分配算法···································115
4.2.1 系統模型與問題描述····································································115
4.2.2 多智能體算法設計·······································································119
4.2.3 基於A2C 算法的多智能體拓展······················································122
4.2.4 算法流程···················································································124
4.2.5 模擬結果及性能分析····································································125
4.2.6 本節小結···················································································132
4.3 基於DDQN 的D2D 直接接入免授權頻譜算法··································132
4.3.1 系統模型與問題描述····································································133
4.3.2 D2D 吞吐量模型·········································································134
4.3.3 WiFi 吞吐量模型·········································································134
4.3.4 問題描述···················································································136
4.3.5 算法設計···················································································137
4.3.6 模擬結果與性能分析····································································142
4.3.7 本節小結···················································································150
4.4 本章總結·························································································151
參考文獻·································································································151
第5 章 基於無人機平臺的免授權頻譜共享方法············································153
5.1 引言································································································153
5.2 基於混合頻譜共享的軌跡優化和資源分配算法·································154
5.2.1 場景描述與系統模型····································································154
5.2.2 算法設計···················································································161
5.2.3 模擬結果與性能分析····································································166
5.2.4 本節小結···················································································180
5.3 基於全頻譜共享的軌跡和功率優化算法···········································180
5.3.1 場景描述與系統模型····································································181
5.3.2 問題描述···················································································187
5.3.3 算法設計···················································································188
5.3.4 算法流程和復雜度分析·································································195
5.3.5 模擬結果與性能分析····································································196
5.3.6 本節小結···················································································206
5.4 本章總結·························································································206
參考文獻·································································································207
第6 章 基於AI 的免授權頻譜共享方法························································210
6.1 引言································································································210
6.2 人工智能技術··················································································210
6.2.1 深度學習···················································································211
6.2.2 神經網絡···················································································213
6.2.3 強化學習···················································································214
6.3 基於深度Q 學習的免授權頻譜接入算法···········································219
6.3.1 問題建模···················································································220
6.3.2 算法設計···················································································222
6.3.3 模擬結果與性能分析····································································225
6.3.4 本節小結···················································································229
6.4 基於平均場近似的免授權頻譜接入算法············································229
6.4.1 系統模型與問題描述····································································229
6.4.2 算法設計···················································································231
6.4.3 模擬結果評估與性能分析······························································234
6.4.4 本節小結···················································································240
6.5 本章總結·························································································241
參考文獻·································································································242
第7 章 總結與展望······················································································244
7.1 總結································································································244
7.2 展望································································································245
7.2.1 免授權頻譜共享方案的評估方面·····················································245
7.2.2 免授權頻譜共享方案的優化方面·····················································245
7.2.3 D2D 通信下的免授權頻譜共享方面·················································246
7.2.4 無人機通信下的免授權頻譜共享方面···············································246
7.2.5 AI 驅動的免授權頻譜接入方面·······················································247