於LTE中混合最大速率和比例性公平之下行資源分配演算法
No Thumbnail Available
Date
2012
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
在本論文中,我們針對長期演進技術(LTE)系統提出了一個下行的資源分配演算法,在我們提出的演算法中,相似於之前的一些相關研究,如最大速率演算法(Max-rate)和均衡公平調度演算法(PF),前者旨在提高最大限度吞吐量,後者旨在提高用戶之間的公平性。我們著重於詳細說明如何選擇排程演算法和物理資源塊分配。我們發現之前的研究不能兼顧最大限度吞吐量和公平性,因此在我們提出演算法內加入一個混合Max-rate和PF的調整參數β來幫助我們更能適性調整公平性和最大限度吞吐量的問題。從實驗結果發現在使用者數量不多時由於無法有效的提高吞吐量,所以我們建議把β調低偏向於均衡公平調度演算法(PF),在使用者數量多時藉由讓使用者彼此競爭的情況下便能有效的提高最大吞吐量,所以我們建議把β調高偏向於最大速率演算法(Max-rate)。
In this paper, we focused on the Long Term Evolution (LTE) system and proposed a downlink resource allocation algorithm which balances the trade off between maximum throughput and the fairness among users. Our approach combined the Maximum rate (MAX) throughput algorithm and the Proportional fairness (PF) algorithm in order to provide the best performance when the amount of users changes. The simulation results showed that our approach can simultaneously improve fairness and throughput when the number of users are dynamic.
In this paper, we focused on the Long Term Evolution (LTE) system and proposed a downlink resource allocation algorithm which balances the trade off between maximum throughput and the fairness among users. Our approach combined the Maximum rate (MAX) throughput algorithm and the Proportional fairness (PF) algorithm in order to provide the best performance when the amount of users changes. The simulation results showed that our approach can simultaneously improve fairness and throughput when the number of users are dynamic.
Description
Keywords
長期演進技術, 資源分配, 編碼調變方案, 最大速率演算法, 比例公平性演算法, Long Term Evolution, Resource allocation, Modulation and Coding Scheme, Maximum rate algorithm, Proportional fairness algorithm