wireless multimedia

Seminar aboutWireless

Multimedia(WMM)

By:Radhwan Mohammed Hussein Al-Jaki

Email: aljaki2@live.com

What is Multimedia ?

Multimedia

What is wireless ?

Methods of data transfer

• Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor and doesn't has a cables between them.

• The wireless technologies use radio waves to transfer the data.

What is the difference between Bluetooth and Wireless?

• Both Wi-Fi and Bluetooth are wireless technologies that transmit data by using radio frequency (RF) signal, but the main differences between these two are range, speed, and cost

Advantages and Disadvantages of wireless

Advantages

ConvenienceMobilityProductivity

Deployment Expandability Cost

Disadvantages

SecuritySpeed

Reliability Range

Wireless Security

Wireless Security

WEP

WPA

WPA2

Wired Equivalent Privacy

Wi-Fi Protected Access

Wi-Fi Protected Access 2

WEPThe original encryption protocol developed for wireless networks. As its name implies, WEP was designed to provide the same level of security as wired networks. However, WEP has many well-known security flaws, is difficult to configure, and is easily broken.

WPAIntroduced as an interim security enhancement over WEP while the 802.11i wireless security standard was being developed. Most current WPA implementations use a preshared key (PSK), commonly referred to as WPA Personal, and the Temporal Key Integrity Protocol (TKIP, pronounced tee-kip) for encryption. WPA Enterprise uses an authentication server to generate keys or certificates.

WPA 2Based on the 802.11i wireless security standard, which was finalized in 2004. The most significant enhancement to WPA2 over WPA is the use of the Advanced Encryption Standard (AES) for encryption. The security provided by AES is sufficient (and approved) for use by the U.S. government to encrypt information classified as top secret — it’s probably good enough to protect your secrets as well!

How does wireless work?

Types Of wireless adapter cards

Asus_WL138gEIntel-PROSet-USB wireless

TLWN353GD

Device 1 Device 2

Wireless DriverWireless Driver

20m

Internet

Device 1 Device 2

Wireless DriverWireless Driver

Open

Internet

Device 1 Device 2

Wireless DriverWireless Driver

Sender ReceiverRequestHi my name is device 1 and you?

Internet

Device 1 Device 2

Wireless DriverWireless Driver

Sender ReceiverAcceptHi I am device 2 and my password :123

Internet

Device 1 Device 2

Wireless DriverWireless Driver

Sender ReceiverTesting connection

Internet

Device 1 Device 2

Wireless DriverWireless Driver

Sender Receiver

Internet

Now what is wireless multimedia?It’s a process use wireless method to transfer multimedia data (text – picture -video – sound) from point to another point.

Questions ?