無線網路共享式保護頻道動態分配策略研究

Guard Channel Allocation in Integrated Voice/Data Mobile Networks with Guard Channel Sharing Scheme

郭毓庭(Yu-Ting kuo)

指導教授 ： 劉宏煥

中原大學/工學院/電子工程研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600479

摘要

在整合式語音與資料服務無線網路中，讓語音訊務的保護頻道分配一部份給數據訊務共同使用，同時在此共享的保護頻道中給予遞交通話較高的優先權的分享式數據保護頻道策略，將比使用專用的數據保護頻道方式擁有較高的效能。本論文研究在使用分享式數據保護頻道策略的無線網路中加入允入控制策略，此策略動態地調整保護頻道的數量以提高頻道使用效率以及滿足不同服務的服務品質。此策略設計的著眼點在於是否快速的收斂以及較低的計算複雜度要求。在系統模擬中分別針對新通話的阻塞機率、遞交通話的強制中斷機率以及資料封包的平均延遲時間做討論與評估。
在此策略的三種服務中，遞交通話擁有最高的頻道優先權。並且由模擬結果得知，遞交通話強制中斷機率必定會保持在所訂定的標準之下。然而對新通話服務與資料訊務服務之間的服務品質提升則沒有任何偏袒。而由模擬結果得知，有使用允入控制策略相對於沒使用的狀況，其新通話與資料訊務會得到較好的服務品質。

關鍵字

分享數據保護頻道策略 ； 保護頻道分配策略 ； 頻道分配

並列摘要

Guard channel sharing scheme, which the data traffic can use parts of the residual channels of voice guard channels on condition that the handoff requests have higher priority over data packets, has been evidenced that outperforms than conventional dedicated data guard channel scheme in integrated voice/data mobile networks. In this thesis, we investigate a dynamic guard channel allocation scheme based on the guard channel sharing scheme that can jointly provide dynamic allocation of both voice and data guard channels in order to improve channel utilization and consequently keep the different services’ QoS requirements as possible. The proposed scheme is convergent quickly and easy in implementation. Simulations are used to evaluate the performance which includes new call blocking/ handoff call force terminating probabilities, and average data packet delay of the system.
With this scheme, the handoff calls have the highest priority over the other two traffics and hold the handoff call force terminating probability under required target. To the new call attempts and data traffic, this scheme does not bias toward either service. Along with the guard channel sharing scheme, both new call attempts and data traffic obtains better service than that without dynamic channel allocation and guard channel sharing schemes.

並列關鍵字

integraged voice/data networks ； guard channel sharing ； SDGC ； channel alloction

參考文獻

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