在LTE 網路中考慮裝置需求來進行D2D 通訊的資源分配

曾志成 ； 施鈞耀 ； 郭芳璋 ； 王煌城

《TANET2016 臺灣網際網路研討會》 2016 (2016/11) Pp. 227-232-041

https://doi.org/10.6679/TANET.2016.41

摘要

隨著行動上網裝置的普及，傳輸資料量日益增加，行動網路必需提出新的技術以因應快速成長的資料量。D2D (device-to-device)通訊已被視為是解決上述問題的一個關鍵技術。D2D 通訊可以讓兩個相互靠近的裝置在基地台(evolved NodeB，eNB)輔助下直接傳輸資料。本文在LTE-A 的環境中，在D2D pair 重複使用CU (cellular user)上行頻譜的前提下設計可減少同頻干擾之無線資源的分配方式藉此進行D2D 通訊。首先，假設每個D2Dpair 的傳送需求可被轉換為RB (Resource Block)數量，並將所需求的RB 總和在特定區間內的數個D2D pair 形成聯盟。先對每個聯盟進行RB 分配再利用NBS (Nash Bargaining Solution)來分配RB 給聯盟中的D2D pair。模擬結果顯示，本文所提出的方法可以考慮D2D pair 的需求，並能將所有Available RB 以公平的方式分給所有的D2D pair，盡可能滿足D2D pair 的需求。

關鍵字

裝置對裝置 ； 資源分配 ； 聯盟 ； 納許議價

並列摘要

With the increase of mobile devices, the demand for mobile data is increased accordingly. New mobile communication technologies are required to support such requirement. Device-to-Device (D2D) communication is considered as one of the solutions. By assuming D2D pair reuses the uplink spectrum of cellular user (CU), this paper investigates how to satisfy radio resource requirement of D2D pair and mitigate interference to the CUs via appropriate resource allocation. Firstly, the requirement of each D2D pair is assumed to be transferred to the number of Resource Block (RB). Secondly, D2D pairs are grouped into coalitions based on the required number of RBs. Thirdly, eNB selects Reusable RBs from the perspective of CUs and Available RBs among the Reusable RBs. Lastly, eNB allocates RB to coalition and D2D pairs in the same coalition obtain RB based on Nash Bargaining Solution (NBS). Simulation results show that the proposed method can consider D2D pairs' request, and satisfy the requests as much as possible.

並列關鍵字

Device-to-Device (D2D) ； resource allocation ； coalition ； Nash Bargaining Solution (NBS)