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Bài giảng Computer Networks 1 (Mạng máy tính 1) - Lecture 4: Networking Technologies (Cont’) - Phạm Trần Vũ

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Computer Networks 1  
(Mạng Máy Tính 1)  
Lectured by: Dr. Phạm Trần Vũ  
1
Lecture 4: Networking Technologies  
(cont’)  
Reference:  
Chapter 4 - “Computer Networks”,  
Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003.  
2
Content  
ꢀ Broadband wireless  
ꢀ Bluetooth  
ꢀ Network bridges, hubs, switches, routers  
ꢀ Virtual LAN  
3
Broadband Wireless - WiMAX  
• Long-range system, up to 50km  
• Use licensed spectrum  
• Provide internet access to end user from ISP  
• Quality of service can be guaranteed  
4
The 802.16 Protocol Stack  
The 802.16 Protocol Stack.  
5
The 802.16 Physical Layer  
The 802.16 transmission environment.  
6
The 802.16 Physical Layer (2)  
Frames and time slots for time division  
duplexing.  
7
The 802.16 MAC Sublayer  
Protocol  
Service Classes  
• Constant bit rate service  
• Real-time ce  
• Non-real-time variable bit rate service  
• Best efforts service  
8
The 802.16 Frame Structure  
(a) A generic frame. (b) A bandwidth request  
frame.  
9
Bluetooth  
• Bluetooth Architecture  
• Bluetooth Applications  
• The Blue
• The Bluetooth Radio Layer  
• The Bluetooth Baseband Layer  
• The Bluetooth L2CAP Layer  
• The Bluetooth Frame Structure  
10  
Bluetooth Architecture  
Two piconets can be connected to form a  
scatternet.  
11  
Bluetooth Applications  
The Bluetooth profiles.  
12  
The Bluetooth Protocol Stack  
The 802.15 version of the Bluetooth protocol  
architecture.  
13  
The Bluetooth Frame Structure  
A typical Bluetooth data frame.  
14  
Data Link Layer Switching  
• Bridges from 802.x to 802.y  
• Local Internetworking  
• Remote Bridges  
• Repeaters, Hubs, Bridges, Switches, Routers,  
Gateways  
• Virtual LANs  
15  
Data Link Layer Switching  
Multiple LANs connected by a backbone to handle a  
total load higher than the capacity of a single LAN.  
16  
Bridges from 802.x to 802.y  
Operation of a LAN bridge from 802.11 to 802.3.  
17  
Bridges from 802.x to 802.y (2)  
The IEEE 802 frame formats. The drawing is  
not to scale.  
18  
Local Internetworking  
A configuration with four LANs and two  
bridges.  
19  
Remote Bridges  
Remote bridges can be used to interconnect  
distant LANs.  
20  
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