查詢結果分析
來源資料
頁籤選單縮合
題名 | 支援流量適應且可向後相容的分時多工無線通訊系統HARQ-ACK傳送方法=Backward Compatible HARQ-ACK Reporting in a TDD Wireless Communication System with Traffic Adaptation |
---|---|
作 者 | 李建民; | 書刊名 | 電腦與通訊 |
卷期 | 155 2014.02[民103.02] |
頁次 | 頁77-84 |
專輯 | 下世代無線接取系統傳輸技術專題 |
分類號 | 448.82 |
關鍵詞 | 分時多工; 混合式自動重傳請求; 正確認訊息; 流量適應; Time division duplex; TDD; Hybrid automatic repeat request; HARQ; Positive acknowledgement; ACK; Traffic adaptation; TA; |
語文 | 中文(Chinese) |
中文摘要 | 現行的分時多工 (time-division duplex, TDD)無線通訊,其上行 /下行資源的比例通常是以半穩態 (semi-static)的方式由基地台利用系統資訊廣播的方式告知用戶設備。然而這種方式並無法及時地滿足且符合使用者設備多變的流量需求。因此,快速地依實際需求調整上下行資源的分時多工無線通訊系統概念便產生。然而,為了向後相容於舊版本用戶設備,這種具流量適應的分時多工無線通訊系統需同時使用不同的上行下行資源組態來服務不同版本的用戶。在這樣的狀況下,不同版本用戶所需回傳的混合式自動重傳請求 (Hybrid Automatic Repeat Request, HARQ)訊息將會發生資源衝突的現象,本文將探討此問題並提出有效的處理方案。 |
英文摘要 | For a TDD (Time Division Duplexing) communication system, the uplink (UL)/downlink (DL) resource ratio is semi-statically assigned by broadcasting corresponding system information. However, semi-statics allocation cannot match fast varying traffic characteristics and environments. Thus, changing the UL/DL configuration with a lower periodicity is considered. For a TDD system with traffic adaptation, the legacy UE is configured with a UL/DL configuration according to the system information. The additional configuration is a real configuration operated by the eNB, and the eNB provides services to both the legacy UE and the advanced UE according to the additional configuration. However, when the legacy UE and the advanced UE are configured with difference UL/DL configurations, a collision of hybrid automatic repeat request (HARQ) resources may occur if the legacy UE and the advanced UE intend to transmit HARQ feedbacks in a same UL subframe. Thus, how to solve the collision of the HARQ resources caused due to different UL/DL configurations of the legacy UE and the advanced UE is an important topic to be discussed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。