Fourth auction of radio spectrum licences performed by Ofcom was held in February, 2008. Lucky bidders- business giants such as Orange, T-Mobile and BT competed for 10, 28, 32 and 40 GHz bands. Less famous professionals like MLL Telecom, UK Broadband and Arqiva took part in this auction too. What was remarkable?  The amount paid for every MHz was about £178. It is really –very CHEAP!!! MLL Telecom has been successful, being awarded national spectrum licences in the 32 and 40 GHz bands. MLL Telecom supplies customers with wireless, safe and secure, rapid and cost-beneficial, future-proof connectivity. MLL delivers wireless networks to the places where other companies cannot reach. MLL customers include such network operators like BT, Affiniti etc. This auction of 40 MHz is presently in progress development. The range of use is mobile TV, broadcasting. An important aspect of the nature of airwave is its frequency, length and speed. By the length airwaves divide into short, medium or long ones. Now you see that propagation straight depends on the frequency, length and speed. What is valuable here? Normally, the lower the frequency of the wave- the better signals go through the obstacles and enter the buildings. To tell you the truth the prices are really cheap – as this gives an opportunity for the new services to spread out more efficient and quicker.
Future plans. Last week Ofcom declared future plans for the 2.6GHz bands. This spectrum can serve new wireless services. The auction is going to be launched in the summer. The working mechanism of the auction is like that- demand gives born to the market and the last settles on the range of the frequencies and consequently their particular use and apply taking into account the price the bidder is ready to pay for. This technology is rather efficient and dynamic, also saleable. Furthermore, you can use the frequencies or do not use them, but you are forbidden to change the way of usage of the spectrum assets are oriented to. It is really obvious that the atmosphere in this sector has changed rather drastically just in the last 5-8 years within the United Kingdom.

Conclusion

First of all the whole system produces wanted and needed spectrum supplied and guaranteed with the working licences. What is important that this programme is managed by one regulator – Ofcom, so no other sellers or providers. Evidently, the market will widen due to the amount of released spectrum thus provoking the progress of the radio industry in the UK. In the second place, and also significant- is correlation between diverse blocks of bands. For instance, MLL possesses bands of 32GHz and 40GHz – they are perfectly fit WiMAX and mobile service providers. So, MLL need to correlate with the final – consumer in order to use this band more efficient. Consequently, all parts are involved in this process should co- operate and correlate in order to work more effective and successful.

WiMAX technology will offer high data speed network connections and in this manner serve as a backhaul for WiFi LAN (WLAN) hot spots, where people on the move can access carriers' WiFi services on mobile technology basis, because this technology allows interoperability among different systems. And service providers lacking a mobile network can use a WiMAX technology network at comparatively low price. WiMAX technology possibly will offer a much cheaper, easier to build network infrastructure other than the physical medium of WiFi backhauls that cable, T1 or DSL systems presently offer.

Because WiMAX is based on IEEE 802.16 Standard and HiperMAN, the IEEE and ETSI have each become accustomed it's standard to take in many of the other's essential characteristics. IEEE 802.16 standard partitioned its MAC (Medium Access Control) layer into sub-layers that hold some different transport equipments and technologies, together with Ethernet, IPv4, IPv6 and other asynchronous transfer mode. This allows traders to use WiMAX technology and no matter what technology they support for transmission. WiMAX technology has a wide communication range up to 50 kilometers because principles allows WiMAX network to transfer data at higher rates and because of this move towards use of directional antennas that generates persistent radio signals. WiMAX base station provide service to only 500 users at a time not more than that just because to they are sharing bandwidthand this factor may cause lower date rates among. Technically every single station will possibly provide communication an area inside a 10 miles radius. To compare WiFi with WiMAX technology the last has a range of few thousand feet. while WiFi has a range of only a few hundred feet.

Moreover WiMAX network broadcasts data communication over several broad signal frequency ranges. And this exceptional capacity to work in several ranges allows to communicate above the frequencies that will evade interference with other wireless network applications. Also the flexibility of this system's communication allows providers to employ different frequencies that depend on the speed and range needed for a particular data communication. Amplifying data capacity and bandwidth via dividing broad capacity channels to many narrowband channels, the WiMAX technology attains higher data transmission rates in part by OFDM (Orthogonal Frequency Division Multiplexing).Every channel uses different frequencies that can transmit different pieces of a message at the same time.

One of the important advantages of data transmission is that the channels do not overlap, in spite of the fact that the spaces between channels are extremely close. The primary IEEE 802.16 standard uses the 10 to 66 GHz frequency range And it is very suitable because this frequency range shrinks the multi path distortion that arises when transmitting signals that do not follow the line of sight echoed items and finish off out of sink, thus jumbling the inbound communication and reducing bandwidth.

In theory WiMAX network can offer single channel data rates up to 75 Mbits/s equally on the downlink and uplink. Service providers can use several 802.16 channels for single broadcast to offer bandwidths of up to 350 Mb per second.

Third generation mobile network technologies will support around 115 Kbps. The accepted IEEE 802.11b WiFi WLAN technology data rate are limited to 11Mbps, on the other hand newer 802.11a and 802.11g provide up to 54Mbps in favorable conditions but practically all of the them transmit at lesser speed.

In the meantime WiMAX network is extremely scalable as it is simple to include broadcast channels to offer extra bandwidth as required. And as far as security is concerned in WiMAX technology it uses PKI (Public Key Infrastructure) authentication, which transmit via digital certificates by identifying parties over trusted authorities. The IEEE 802.16 system encrypts data by using 56 bit DES (Data Encryption Standard) keys.

The wireless services are supplied at higher frequencies as the line of sight constraints required the setting up of many antennas to cover up the equivalent area and this increases to a great extent the expenditure of setting up wireless technology. The available frequencies for new wireless standards such as IEEE 802.16 are higher as some of the other wireless technologies are more sought-after to diminish ranges that have been approved for other use.

The WiMAX technology is always supported by the WiMAX Forum which comprises a group of commercial leaders such as AT&T, Cisco, Samsung, Intel, and some other giants. This forum involves many working groups that highly focused on regulatory, marketing, technological characteristics. Moreover the certification working group intends to certify interoperability among WiMAX products from manufacturers internationally.

What does it mean this thing wireless broadband?
If we look at this term wireless broadband then we get to realize this unlimited horizon of wireless age. One of the wireless broadband types is mobile broadband. Sure, it is used for mobile phone towers as access point. Though, this specific type of airwaves has a number of different disadvantages that can cause some serious issues for many users. Why? Because of promoting and guarding wireless broadband can decrease and discard already challenged technologies. Let us begin with first one. Wireless Internet Service Providers (WISPs) is the first of those companies that covered rural areas that did not get support by ADSL. Clients used this kind of WISPs and they should have to install a dish on the roof of their houses in turn to get a signal. As a rule this received signal was broadcast from a higher place within this area. And here comes one interesting thing. There had to be a permanent and constant signal from the transmitter to the dish to keep up the connection. Of course from that time wireless broadband has improved much and progressed forward, even though it is still not fairly ideal and perfect as it should be. WiMAX or Worldwide Interoperability for Microwave Access is one of the newest and most commonly used technologies. So far this technology is going to be the most promising and potential type of wireless broadband. By the way, nowadays it is widely used all around Europe and some arias in Asia.

Replacing ADSL? What it can bring us? To say you the truth but sooner or later ADSL will be replaced.
It does not really matter whether WiMAX or other more advanced wireless broadband technologies replace ADSL but this is the fact. Progress will find a more suitable and ideal connection for homes, schools, offices, hospitals… We just have time to wait and see that a wireless connection will offer the following advantages like reliability, stability, convenience and security.  And this connection has to provide more pluses in the aspects of speed, convenience and pricing in order to be capable to compete and win a market place. At present many endeavors and efforts are made to develop this area of airwave connection. In our opinion it is only a matter of occasion and luck when one of these efforts is realized. MIT (Massachusetts Institute of Technology) has just announced that source of a wireless connection is power. Definitely in some time wires will be out of date, consequently we will really live in era of wireless connectivity.

Over the last years broadband width for WiMAX has considerably increased. This growth rises due to up-to- date technologies and modern devices like mobile phones, laptops, personal digital assistants, iphones, iPods etc. 3) Network by wireless has become faster and more reasonably priced thanks to progress in the bandwidth arena. Now it can transfer data up to two megabytes per second, as usually in the past it was just one megabyte. Furthermore, wireless broadband connection is more secure than a satellite one due to the fact that the signal does not travel in the process of transfer, but goes straight to the recipient. Also, you are pleased with the wireless connection's speed while downloading web pages. It is rather easy to check your mail letters as well as send them. Interactive functions. Regarding applications like games, audio-video programs, chats, multimember chats, video-conference calls, local networking or wide area network are rather painless to navigate. On the whole, your computer usage becomes more and more efficient.

Wireless connection for rural users means internet access, high rate and comfort as no need to set up additional wires or lines. By the way, you can install such a wireless internet connection so that you can access it within a one-hundred foot radius. Thus, you can move your laptop freely about the house or have a nice cup of tea in your arbor enjoying internet surfing. Now it is no need to sacrifice internet connection if you want to move to another room. Wireless networks means work well for a businessman. He/she can contact any person anytime and anywhere. This is a big advantage. Almost all new PCs have already installed wireless chipsets that allows you to connect internet automatically. It saves you time and does not involve devices or cables. Also any Bluetooth works simply with the wireless connection. To make our life easier, wireless technology enabled us with a wide range of new and advanced wireless gadgets like wireless microphones, wireless headsets, wireless stereo speakers, computer peripherals, televisions.

The leading UK Telecom company can provide you with a piece of advice on wireless broadband internet connectivity. Certainly, we can say that our generation steps a new era. This era is called Wireless Connection. Wireless connection spreads rapidly and we become a wireless society. Technologies for wireless are improving constantly. These described above advantages of wireless connection make our life less stressful. Moreover, it is very valuable and helpful in both professional sphere and personal life. Apply network by wireless and enjoy your life!

Some experiments were undertaken to clear up this situation. Experiment with pupils` reading was performed in one of British schools. The BBC programme Panorama maintains that readings were 600 times below the government's safety limits due to WI-FI radiation. Also the BBC declares that a wireless networks radiation is three times higher than that of a mobile one. From the other side, authorities from scientific society say that the radiation from the laptops is very small. However, better not to encourage children use laptops in their laps when they go online for a long period of time. There is a hot scientific debate with arguments. But, as you know right though thrives on conflict. Now we see that though there is a small radiation from laptops. Then the investigation goes further and Panorama visited one school in Norwich. The experimentation conducted in that school revealed the difference between the WI-FI and mobile radiation. That means that WI-FI signal is three times higher than the beam of mobile radiation.

Let us identify what WI-FI actually means. WI-FI is such a system that uses radio waves of a very low intensity. In comparison with the just common microwave oven that every family has in their houses, the WI-FI radiation intensity is 100,000 times less than that of an oven. Furthermore, if you sit in front of your lap top and receive network by wireless connection for a year then you will have received the same amount of radio waves as that of talking on mobile phone for 20 minutes. So, there is no any evidence what type of radiation has more influence over people's health and life. But, we understand that the radiation does exist and we are curious to discover the way to calculate it.

This is rather a new area for scientists` investigation. That is why research in this particular direction is still proceeding. Taking into account that radio waves or WI-FI have been part of our lives for more than a century then we should already have found some notes or records with regard to any cases of harm, damage or any other negative effects that WI - FI can provoke. Here are some examples that have been represented to the public. The first person who suggested that low-level radiation has an effect on chromosomes or genetic material was a Professor Olle Johansson from the Karolinska Institute in Sweden. However, Professor Will J Stewart from the Royal Academy of Engineering added that science explored that mobile phones` influence over health was negligible and thus assured that people should be calm. Regarding WI-FI, they work on another radio frequencies but the power is very low.

In conclusion, UK Telecom can suggest that opinions are divided into two opposite sides. One side is pro, another is contra. The truth is somewhere in the middle. But, alongside with this delicate issue there are many advantages of using WiMAX connection. This of course is another story and will need to be discussed some other time.