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題 名 | GPRS傳輸層可靠度研究=Reliability of GPRS Transmission Plane |
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作 者 | 吳孟哲; 楊育郡; 廖百恩; | 書刊名 | 電信研究 |
卷 期 | 35:1 2005.02[民94.02] |
頁 次 | 頁143-162 |
分類號 | 448.84 |
關鍵詞 | 無線分封數據服務; 服務等級; 傳輸可靠度; General packet radio service; GPRS; Quality of service; Reliability class; |
語 文 | 中文(Chinese) |
中文摘要 | 本論文介紹GPRS網路中資料傳送可靠度等級分級的機制及控制的參數,由於GPRS網路各個介面頻寬落差極大,依照各個控制參數所在的介面,可發現影響可靠度等級運作最巨的參數為LLC(Logic Link Control)frame mode。因此本論文詳細分析LLC協定層acknowledged及unacknowledged mode在運作上效能的差異,並根據ETSI(European Telecommunications Standards Institute)在LLC及SNDCP協定層acknowledged mode在實務上容易發生的問題。 |
英文摘要 | Reliability class is defined as a key attribute in GPRS QoS (Quality of service) profile. In this paper, the mechanism of reliability class and related parameters are introduced. Because of the large bandwidth variation between the GPRS interfaces, the major parameter affecting the network performance is the LLC frame mode. The difference of operation efficiency between LLC layer acknowledged mode and unacknowledged mode operation is analyzed in detail. And some practical problems of implementing LLC acknowledged mode system are discussed according to the related mechanism defined in LLC and SNDCP layer specification. |
本系統中英文摘要資訊取自各篇刊載內容。