9 16 05 Karim Hassib Wi Max
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The document discusses the key aspects of the IEEE 802.16 (WiMAX) standard for broadband wireless access. It describes the 802.16 MAC layer, including its reference model, convergence and common part sublayers, quality of service support, and security features. It also outlines the 802.16 PHY layer specifications and frame structures for different duplexing schemes.
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The document discusses wireless local area networks (WLANs) and personal area networks (PANs). It describes the characteristics and fundamentals of WLANs, including their advantages like flexibility and lower costs, and disadvantages such as lower bandwidth and security issues. It provides details on common wireless standards like IEEE 802.11, Bluetooth, and HomeRF. It also compares infrastructure-based and ad-hoc network topologies and summarizes key aspects of the IEEE 802.11 standard including services, physical layers, and frame formats.
WLAN - IEEE 802.11
The document provides information about the IEEE 802.11 WLAN standard and its various layers:
- The PHY layer includes the physical layer convergence protocol and physical medium dependent sublayers. The PHY layer supports FHSS, DSSS and infrared spread spectrum techniques.
- The MAC layer supports distributed coordination function based on CSMA/CA and RTS/CTS, as well as point coordination function controlled by an access point. It defines frame formats and medium access mechanisms.
Bbgbnhm
WiMAX is a wireless technology that can provide broadband access over long distances. It uses wireless transmission in the 2-11 GHz range to connect users to a base station up to 50 km away. From the base station, users can access the internet and other public networks at speeds up to 70 Mbps shared among users. WiMAX allows both line-of-sight and non-line-of-sight connections using adaptive burst profiles. It has the potential to provide high-speed wireless internet access to areas not reached by cables and DSL.
S dutta
ATM is a connection-oriented multi-service network architecture that can carry voice, data and video simultaneously over the same network. It uses fixed-length cells consisting of a 5-byte header and 48-byte payload. Virtual connections called virtual channel connections (VCC) and virtual path connections (VPC) establish logical connections between end users for transmitting data through the network. ATM provides quality of service guarantees and efficient traffic management through these virtual connections and different service categories like constant bit rate, variable bit rate, available bit rate and unspecified bit rate.
80211
The document discusses IEEE 802.11 wireless LAN standards. It covers the physical layer specifications of 802.11b using HR/DSSS and 802.11a using OFDM. It also describes the MAC layer functions including CSMA/CA, fragmentation, power management, and quality of service enhancements. Security methods like WEP and 802.1x are summarized. Key concepts discussed are the BSS, ESS network architecture, and differences from Ethernet in medium access.
Computer networks wireless lan,ieee-802.11,bluetooth
Wireless LAN Technology:-Overview-Wireless LAN Applications, Wireless LAN
Requirements, Wireless LAN Technology. Infrared LANs-Strengths and Weakness,
Transmission Techniques. Spread Spectrum LANs- Configuration, Transmission Issues.
Narrowband Microwave LANs.
IEEE 802.11 Wireless LAN Standard:- IEEE 802.11 Architecture and Services,
Medium Access Control-CSMA/CA, Physical Layer-IEEE-802.11 FHSS, IEEE-802.11
DSSS, IEEE-802.11a OFDM, IEEE-802.11b HR-DSSS, IEEE-802.11g OFDM. IEEE-
802.11 Addressing Mechanism.
Blue Tooth:- Architecture, Bluetooth Layers, Radio Layer, Baseband Layer, L2CAP,
Other Upper Layers.
VIRTUAL LANS:- VLAN Technology, Membership, Configuration, Communication
Between Switches, IEEE Standard, Advantages.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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9 16 05 Karim Hassib Wi Max
- 1. WiMAX for Broadband Wireless Access By: Karim M. El Defrawy ICS UCI-2005
- 5. IEEE 802.16 -- Introduction Coverage range up to 50km and speeds up to 70Mbps(shared among users).
- 6. IEEE 802.16 -- Introduction Source: WiMAX, making ubiquitous high-speed data services a reality, White Paper, Alcatel.
- 9. Adaptive PHY Source: Understanding WiMAX and 3G for Portable/Mobile Broadband Wireless, Technical White Paper, Intel.
- 12. IEEE 802.16 MAC – OFDM PHY TDD Frame Structure
- 13. IEEE 802.16 MAC – OFDM PHY FDD Frame Structure
- 14. FDD MAPs Time Relevance frame Broadcast Full Duplex Capable User Half Duplex T erminal #1 Half Duplex T erminal #2 UPLINK DOWNLINK DL MAP UL MAP DL MAP UL MAP
- 18. IEEE 802.16 MAC -- CPS – MAC PDU Format
- 20. IEEE 802.16 MAC -- CPS – Data Packet Encapsulations
- 24. IEEE 802.16 MAC – CPS – MAC PDU Concatenation
- 25. IEEE 802.16 MAC – CPS – MAC PDU Fragmentation
- 26. IEEE 802.16 MAC – CPS – MAC PDU Packing
- 36. IEEE 802.16 MAC – CPS UL Sub-Frame Structure Source: http://www.cygnuscom.com/pdf/WP_PN_Article.pdf