| 研究生: |
陳宣佑 Chen, Hsuan-Yu |
|---|---|
| 論文名稱: |
在多點協調系統中利用上行鏈路排程技術達成干擾管理 Interference Management for Coordinated Multi-Point Cellular Networks Through Uplink Scheduling |
| 指導教授: |
劉光浩
Liu, Kuang-Hao |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電腦與通信工程研究所 Institute of Computer & Communication Engineering |
| 論文出版年: | 2014 |
| 畢業學年度: | 102 |
| 語文別: | 英文 |
| 論文頁數: | 35 |
| 中文關鍵詞: | 多點協調網路 、跨細胞間干擾 、上行鏈路排程 、權重函式 、總通道容量 |
| 外文關鍵詞: | Coordinated Multi-Point, Inter-cell interference, Uplink scheduling, Weighting function, Sum-capacity |
| 相關次數: | 點閱:175 下載:1 |
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多點協調網路最近引起廣泛的研究,因其有潛力降低跨細胞間干擾並且有效提升無線頻譜效益,其概念是將數個基地台集合成一合作單位根據使用者回傳通道訊息,藉以消除跨細胞間干擾。根據現有的研究,使用最佳的排程機制來實現最大總通道容量必須經由窮舉搜尋法來完成,造成系統運算複雜度急遽上升而難以實行。我們所提出的干擾管理排程機制之目的是為了降低上行鏈路所產生之嚴重的跨細胞間干擾,所提出的排程機制會於每一個排程循環,藉由權重函式鎖定系統搜尋的排程組態降低搜尋範圍藉以降低系統之運算複雜度,並且在系統鎖定的排程組態中搜尋出可以達成最大總通道容量之排程指令指派給使用者。模擬結果指出,在多點協調網路系統中利用所提出的干擾管理排程機制可以在降低最高48%的系統運算複雜度的情況下達成最佳排程機制的最大總通道容量。
Coordinated Multi-Point (CoMP) has recently attracted a lot of attention because of its potential for inter-cell interference (ICI) mitigation and spectral efficiency improvement.
A group of base stations (BSs) can form a cluster to cooperate, mitigating severe ICI. However, the BSs belong to different clusters still introduce interference to each other, unless a proper scheduling is in place. It is known that the optimal scheduling that maximizes the sum capacity requires an exhaustive search and thus is difficult to implement in practice. In this thesis, we propose an interference manage scheduling scheme in order to effectively manage ICI at uplink. The objective of the proposed scheduling scheme is to mitigate serious ICI in the system with a high frequency reuse.
A weighting function is employed to choose a transmission pattern that has the lowest ICI from all the combinations during a scheduling cycle. Simulation results show that the proposed scheduling scheme achieves the comparable performance to the optimal solution with about 48% reduction of the complexity. In addition, over 60% of the mobile stations (MSs) can transmit in higher capacity.
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