• What is WiMAX?• The IEEE 802.16 standard• WiMAX Performances• WiMAX and Wi-fi• WiMaX and 3G• WiMAX Mobility• Current regulation• Challenges of WiMAX

What is WiMAX

• Worldwide Interoperability for Microwave Access • IEEE 802.16 standards-based wireless technology poised to be the next best

thing!• Aims to provides high-throughput wireless broadband connections over long

distances• IEEE 802.16e, mobility for subscribers, finalizing standards; racing to

prototypes• IEEE 802.16-2000, fixed subscriber and provider backhaul standards; racing to

production

What is WiMAX

What is WiMAX

The IEEE 802.16 standard802.11 802.16

Range Sub 300 ft (Add access points for greater coverage.

Access point same as terminal.)

Up to 30 miles

Typical cell size of 4-6 miles

Coverage Optimized for indoor performance.

Outdoor NLOS performance.

Standard

support for advanced antenna technology

Scalability Channel bandwidth is wide (20 MHz)

and fixed

Flexible use of available spectrum.

Bit RateUp to 54 Mbs in 20 MHz channel

Up to 100 Mbs in a 20 MHz channel

WiMAX PERFORMANCE

WiMAX PERFORMANCE

WiMAX and Wi-fi

What is Wi-fi,

Advantages of Wi-fi,

Comparison to WiMAX and Wi-fi

What is Wifi?

• This is modern wireless technology of computers connection to the network or connecting them to the internet. Just with the help of this technology the internet gets mobile and gives the user the opportunity to be mobile: both in the limit of a room and worldwide. Technology provides simultaneous work in the network of several dozens of the active users; speed of information transmission for the final subscriber can reach 108Mbit/sec. Wi-Fi access is available for note-book and personal pocket computer, web-camera or wireless IP-telephone owners equipped with the proper module meeting the IEEE 802.11 standard.

Advantages of Wi-fi• Absence of Wires

The network is based on wireless Wi-Fi technology which does not require using the telephone or any other lines of connection based on wires. Data transmission is carried out through air on a very high frequency which doesn’t influence a man and does not create hindrances of electronic equipment.

• Possibility of some mobility.Since you are not tied up to wires, you can easily change location of your computer not worrying about connection withdrawal (in the cover area of access point).

• High-speed access to internetA high-speed access to internet is offered for network subscribers, speed of channel is 108Mbit/sec. Meanwhile, there is no necessity for ringing up or connection defining, etc. You are always on-line and to be connected to internet it is just enough to open your browser.

Comparison to WiMAX and Wi-fi• IEEE Standards:

Wi-Fi is based on IEEE 802.11 standard where as WiMAX is based on IEEE 802.16. However both are IEEE standards.

• Range:Wi-Fi typically provides local network access for around a few hundred feet with speeds of up to 54 Mbps, a single WiMAX antenna is expected to have a range of up to 40 miles with speeds of 70 Mbps or more. As such, WiMAX can bring the underlying Internet connection needed to service localWi-Fi networks.

• Scalability:Wi-Fi is intended for LAN applications, users scale from one to tens with one subscriber for each CPE device. Fixed channel sizes (20MHz).WiMAX is designed to efficiently support from one to hundreds of Consumer premises equipments (CPE)s, with unlimited subscribers behind each CPE. Flexible channel sizes from 1.5MHz to 20MHz.

Comparison to WiMAX and Wi-fi

• Bit rate:Wi-Fi works at 2.7 bps/Hz and can peak up to 54 Mbps in 20 MHz channel.WiMAX works at 5 bps/Hz and can peak up to 100 Mbps in a 20 MHz channel.

• Quality of Service:Wi-Fi does not guarantee any QoS but WiMax will provide your several level of QoS.As such, WiMAX can bring the underlying Internet connection needed to service local Wi-Fi networks. Wi-Fi does not provide ubiquitous broadband while WiMAX does.

WiMAX and 3G

What is 3G,Features of 3G,

Comparison to WiMAX

What is 3G?

A radio communications technology that will create a "bit pipe" for providing mobile access to internet-based services. It will enhance and extend mobility in many areas of our lives.

Features of 3G

• Phone calls/fax

• Global roaming

• Send/receive large email messages

• High-speed Web Navigation/mapsVideoconferencing

• TV streaming

• Electronic agenda meeting reminder.

Comparison to WiMAX

WiMAX (Worldwide interoperability for Microwave Access) is  a broadband wireless access technology that can deliver data speeds much higher than 3G, and at chepaer rates. Till recently, 3G has been the only way to deliver broadband connectivity to mobile phones.

Comparison to WiMAX

A typical mobile WiMAX network can deliver up to 15 Mbps within a 3-km cell radius, compared to 3G speeds of 2-2.4 Mbps (for CDMA 2000 and WCDMA). Or in other words, if you want to download a full-length movie onto your mobile, it will take 64 minutes on a 3G connection, but less than nine minutes with WiMAX.

Comparison to WiMAX

3G could drive a variety of applications on your handheld key among these will be video telephony and video conferenceing, mobile TV, interactive gaming, streaming video, music downloads and mobile TV. But WiMAX  is not just about data. Now, there is a greater push offering voice also on a WiMAX platform. Many, including Nortel, are conducting trials of mobile WiMAX.

Comparison to WiMAX

3G has the potential to disrupt the Indian telecom business model as WiMAX spectrum licences could be far cheaper than 3G or even the GSM or CDMA liceces that have been awarded so far. Globally, this has been the case. In Singapore, for instance, the highest amount paid for broadband wireless spectrum was $2.27 million, compared to $100 million for 3G. According to telecom regulator Trai's recommendations, the minimum bid amount for a pan India WiMAX presence is Rs.142 crore. Compare this with the Rs.1,050 crore base price for similar deployment of 3G services almost eight times higher.

Comparison to Wimax

WiMAX was designed primarily for data and is limited in its ability to carry voice. On the other hand, 3G is good for voice, but cannot match the data speeds that WiMAX supports.

Wimax Mobility

Broadband Mobility,Portable and Full Mobility Scenario,

Features and Advantages

Broadband Mobility

• Broadband Wireless Mobility is a solution for service providers and carriers, that is interoperable with their existing networks and that can augment coverage and service to end-users.

• Because it is an IP-based solution, it can be integrated with both wireline and 3G mobile networks.

Portable and Full Mobility Scenario

• Broadband Wireless Mobility mainly aims to allow service providers to reach nomadic and mobile customers equipped with portable devices and allow outdoor roaming across geographical areas of coverage.

Portable and Full Mobility Scenario

Portable and Full Mobility Scenario

• Broadband Wireless Mobility uses the Mobile WiMAX standard that mainly enables the delivery of high-bandwidth services with an array of multimedia features.

• Users can then enjoy a wireless DSL service that is accessible in moving vehicles up to 75 mph with a data rate of 5Mbps at the range of 1-3 miles.

Features and Advantages

• Portable high speed data service• Wider range of coverage (1-3 miles radius)• Supports mobility at 75mph• High throughput (30Mbps at 10 Mhz

bandwidth) • Potential for roaming in larger scale• Flexible • Cost effective

Current Regulations

Outline

• Allocation

• Quality of Service

• Wimax and 3G

• Next Generation Networks

• Country Examples

Allocation

Key Wimax Frequencies

Quality of Service

Network Quality of Service is determined by both Physical and Market characteristics.

• Port Blocking• Traffic Structuring

Wimax and 3G

Although Wimax technology will be capable of providing VOIP services, 3G technologies will remain much more efficient in the use of bandwith for voice transport. Wimax providers have the ability and are allowed to offer services at high levels of mobility.

Next Generation Networks

Country Examples

• Australia• Austria• Belgium• Canada• Denmark• Finland• France• Germany• Ireland

Country Examples

• Japan• Korea• Luxembourg• Netherlands• New Zealand• Spain• Switzerland• Sweden• United Kingdom

Country Examples

• United States

Challanges of WiMAX

Outline

• Business Challenges for WiMAX

• Technical Challenges for Broadband Wireless

Business Challenges for WiMAX

• Differences in global spectrum availability

• Competition from 3G

• Device Development

• The rising bar of traditional broadband

Technical Challenges for Broadband Wireless

References• Wimax forumIEEE 802.16e, • IEEE Standard for Local and metropolitan areanetworks, • Part 16: Mobile Broadband Wireless Access Systems• Internet source:• www.tutorialspoint.com• www.wimax.com• www.wi-fi.uz• Source : Understanding the fundamentals of WiMAX: Understanding Broadband• Wireless Networking 2006, Prentice Hall(Web• Address:http://i.i.com.com/cnwk.1d/i/tr/downloads/home/0132225522_chapter_1.pdf)• www.wimax.com/education• http://www2.ing.puc.cl/~iee3552/wimax.pdf

Questions• What is the biggest challenge for mobile wimax in both business and technical area?• Which one do you prefer? Wimax, 3G or Wi-fi? Why?• What is the challanges for VoIP?