無線非同步傳輸網路之類神經乏晰呼叫允諾控制器

Abstract

非同步傳輸模式網路正在迅速成熟，它能同時有效及彈性地提供如語音、 視訊及數據等各種通訊服務。另一方面，無線通訊多年來由於其在蜂巢式 電話中被廣泛而普遍地應用，亦有相當多的研究投入其中，像是個人通訊 服務這樣的整合無線通訊服務正在取代傳統的有線電話和低速的數據網路 。所以大家開始研究在無線界面中整合語音及數據服務並以可提供多種不 同速度服務的非同步傳輸網路為骨幹的通訊系統。在這篇論文中，我們提 出了一個無線非同步傳輸網路的架構。無線和有線非同步傳輸網路的最大 不同點在於無線非同步傳輸網路必須要考慮無線界面的服務品質。我們首 先對此無線非同步傳輸網路設計一個最佳佇列長度臨界值容量指定策略， 再根據設計策略中所得的經驗和知識來完成類神經乏晰呼叫允諾控制器。 從系統模擬的結果看來，我們所設計的控制器確實在解決無線非同步傳輸 網路呼叫允諾控制的問題上有不錯的表現。 ATM network which flexibly and efficiently integrated multiple kinds ofcommunication service such as voice, data and video is maturing rapidly.Wireless communication, on the other hand, has gained global acceptance and popularity in the cellular voice market and has been an active research area in packet radio networks for many years. Emerging wireless services such as PCS(Personal Communication Services) are going to replace traditional wired telephone and low-rate data access systems. People start to think integrating voice and data transmission in the same air interface and using ATM network as the backbone for the wireless network to provide multi-rate, multi-service in a single network.In this paper, we propose a wireless ATM architecture. The main difference between wireless ATM andwireline ATM is that the air interface QoS has to be considered.We first study a design of queue-length-threshold (QLT)capacity assignment strategy for the wireless ATM network. Base on the knowledge and experience for designing optimal QLT, we design a neural fuzzy connection admission controller for wireless ATM. Accroding to the simulationresults, we can find that the scheme we designed has a great performance inthis area.