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研究生:嚴克勤
研究生(外文):Ka-Chin Yen
論文名稱:藍芽個人區域網路之互連閘道器設計
論文名稱(外文):Transparent Bridging Support for Bluetooth-IP Service Interworking
指導教授:陳俊良陳俊良引用關係
指導教授(外文):Jiann-Liang Chen 
學位類別:碩士
校院名稱:國立東華大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:英文
論文頁數:64
中文關鍵詞:連線管理機制位址解析協定藍芽網路封裝協定藍芽IP閘道器個人區域網路
外文關鍵詞:Transparent GatewayBluetooth Personal Area NetworksService InterworkingBNEP ProtocolAddress Resolution ProtocolIP Local Area Networks
相關次數:
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近幾年來無線通訊已經成為許多研究及產品發展的焦點,在無線網路的技術上,如IEEE 802.11系列及藍芽技術已陸續被發展出來。藍芽技術是以Ad-hoc的網路架構為基礎。其所形成的網路是由藍芽裝置之間自行形成,且不需要任何預先的組態設定。任兩個藍芽裝置可以形成一個微網路稱為Piconet。一個Piconet中包含一個”Master”及最多七個”Slave”裝置,而由”Master”所負責整個Piconet的控制及組織。

在目前的網路世界中,以IP為基礎的網路架構如乙太網路已經稱為最普遍的網路型態。許多在網際網路上的服務已發展的相當完備。為了讓藍芽裝置能夠存取這些網際網路上的服務及Piconet的隔離性,藍芽IP閘道器是必需的。在藍芽規格書中已經定義了兩種方法 – LAN Access Profile及PAN Profile。LAN Access Profile使用點對點通訊協定及PAN Profile使用藍芽網路封裝協定。

本研究係設計一套以個人電腦為基礎的藍芽Piconet與區域網路互連的閘道器。而這個閘道器的主要功能是透過位址解析協定以及連線管理機制使家庭應用與網路元件及多重系統間整合在一起。並且藉由Queue Length、Throughput、Loss Rate及Delay來評估閘道器的效能。

在Queue Length的分析中,閘道器的佇列中的封包數與每秒流進閘道器的封包數成正比。而在Loss Rate的分析中,Loss Rate會隨著閘道器佇列大小的增加而減少;但是當佇列大小增加到一定程度,Loss Rate不會再減少。在Throughput的分析中,閘道器佇列的大小不會對Throughput產生影響。在Delay的分析中,Delay會隨著閘道器佇列大小的增加而增加;但是當佇列大小增加到一定程度,Delay不會再增加。進一步討論實際架設藍芽IP閘道器的過程中所遇到的問題。我們相信這個閘道器解決了藍芽網路與網際網路互連的問題。
In recent years, the wireless communications have become a focus of much research and development. Many wireless network technologies have been developed such as the IEEE 802.11 series and the Bluetooth. The Bluetooth technology is based on the ad-hoc network architecture. The Bluetooth network is formed spontaneously without any pre-configuration. Two Bluetooth devices can establish a connection to build a small network named Piconet. A Piconet has maximum eight devices including one “Master” and seven “Slave”. The “Master” device has the ability to control and coordinate the operations of the Piconet.

In the current network world, the IP-based network as the Ethernet has become the most popular network style. Most services are developed very completely over the Internet. To let Bluetooth device retrieve the services of the Internet, a Bluetooth-IP gateway is needed because of the isolation of a Piconet. The Bluetooth specification has defined the LAN access profile and the PAN profile. The LAN access profile using the IETF Point-to-Point Protocol (PPP) and the PAN profile using the Bluetoooth Network Encapsulation Protocol (BNEP).

A PC-based transparent gateway for interconnecting Bluetooth Piconet and IP local area networks (LAN) was designed in our research. The essential function of this designed Bluetooth-IP gateway is to achieve a seamless integration among home appliances, networking elements and multi-systems using the Address Resolution Protocol (ARP) and connection management scheme. The key techniques developed, as well as the performance analysis in terms of queue length, loss rate, throughput and transmission delay are explored in this research.

In the Queue Length analysis, The Gateway queue length is in the direct proportion with the size of the traffic flow. In the Loss Rate analysis, the Loss rate decreases when the Gateway queue length increasing, but it becomes stable when the Gateway queue length reaches the specified value. In the Throughput analysis, the Gateway queue length has no effect to the throughput of the gateway. In the Delay analysis, the Delay increases when the Gateway queue length increasing, but it becomes stable when the Gateway queue length reaches the specified value. Moreover, the implementation issues are also discussed in the thesis. We believed that the gateway has solved the problem of the interconnection of Bluetooth Piconet and LAN.
Acknowledgements ---------------------------------------- i
摘要 ---------------------------------------------------- ii
Abstract ------------------------------------------------ iv

Chapter 1 Introduction ----------------------------------- 1

1.1 Motivation --------------------------------------------1
1.2 Organization of Thesis --------------------------------6
1.3 Contributions of This Research ------------------------7

Chapter 2 Background knowledge --------------------------- 8

2.1 Bluetooth Networks ------------------------------------8
2.1.1 Radio Spectrum --------------------------------------8
2.1.2 Baseband --------------------------------------------8
2.1.3 Logic Link and Control Adaptation Protocol Layer --10
2.1.4 Link Manager Layer ---------------------------------12
2.1.5 HCI layer ------------------------------------------13
2.1.6 RFCOMM Protocol and SDP Middleware Protocols -------13
2.2 LAN Access Profile -----------------------------------15
2.3 PAN Profile and BNEP Specification -------------------17
2.3.1 Personal Area Networking Profile -------------------17
2.3.2 Bluetooth Network Encapsulation Protocol Specification -------------19

Chapter 3 Bluetooth-IP Service Interworking Concepts ----22

3.1 Address Resolution -----------------------------------24
3.2 Connection Management --------------------------------25

Chapter 4 Performance Analysis ---------------------------29

4.1 Simulation Environment -------------------------------29
4.1.1 Network Simulator (NS2) ----------------------------29
4.1.2 BlueHoc Bluetooth Simulator ------------------------30
4.2 Simulation Results -----------------------------------31
4.2.1 Queue Length Analysis ------------------------------31
4.2.2 Loss Rate Analysis ---------------------------------32
4.2.3 Throughput Analysis --------------------------------34
4.2.4 Delay Analysis -------------------------------------36

Chapter 5 Implementation Issues --------------------------39

5.1 Bluetooth-IP Gateway System Approach -----------------39
5.2 Linux Bluetooth Protocol Stack -----------------------40
5.3 Construction Scenarios -------------------------------40
5.4 The Views of Bluetooth-IP Gateway System -------------42
5.5 The Operation Screens of the Gateway -----------------43

Chapter 6 Conclusion and Future Work ---------------------47

6.1 Conclusion -------------------------------------------47
6.2 Future Work ----------------------------------------- 48

References -----------------------------------------------49
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