Wireless Internet Service Provider

Comparison among wireless internet service providers

Discussing which wireless internet service provider is the best

In United States, the wireless internet service provider community has not been known yet considering the widespread implementation of these technologies. But overseas, the WiMax start ogled as a substitute for telephone cables to create a wireless internet service provider, particularly in areas with large and spread out (as in rural or urban). WiMAX is built on the standards established by the IEEE (Institute of Electrical and Electronics Engineers). It designed to meet the needs of wireless internet service provider, WiMAX allows access to various multimedia applications via a wireless connection.

WiMAX Origins
What about the origin of WiMAX technology and WiMAX name itself? According to James A. Johnson (Vice President, Intel Communications Group / General Manager, Wireless Internet Service Provider Group), a term derived from the acronym WiMAX wireless (abbreviated Wi) Microwave Access (abbreviated as MAX). WiMAX resembles Wi-Fi in terms of technology use the same modulation.

This technology called OFDM (Orthogonal Frequency Division Multiplexing). OFDM is a digital modulation system in which a signal is divided into several channels with a narrow frequency band close together, with each channel using a different frequency. The technology was developed in the 1960s – 1970s. This technology was developed at the time doing research to reduce the occurrence of frequency interference between different channels of the distance to each wireless internet service provider.

At the frequency of non-WiMax, a radio wave will usually be another radio waves interfere with each other, especially if it has a cycle of vibration frequencies adjacent. The most notable was when we played two remote control cars on a nearby radio frequency, such as a car A (frequency 27.125 MHz) and automobile B (27.5 MHz frequency). If both cars (the following radio control) are turned on, both frequencies would interfere with each other. Consequently, if we would move the car A, car B can go walking. Or if we turned the car B, car A will retreat from a few meters.

Imagine what would happen if this is experienced by the frequency used to carry data (carrier) such as the wireless internet service provider data communications. The interference can cause a variety of losses, such as the occurrence of the damage brought by the frequency of these data, the data transmission failure, or the occurrence of errors in data transfer.

With the technology offered by WiMAX, all obstacles will disappear by itself.
WiMAX technology enables us to emit different signals in a very close distance, without having to worry that different signals will interfere with each other / interfering. Thus, we can lay the data traffic with high densities in the various canals. With so many channels that can be ridden by an abundance of data in one time, your ISP or wireless internet service provider can  provide cable or DSL-based services to many customers instead of copper cable media.

Although essentially the same technology, Wi-Fi and WiMAX are still a difference. According to James, the difference between them lies in the division of the spectrum is used, and on the use of licensed WiMAX frequencies. While WiMAX and Wi-Fi use unlicensed frequency one (ie frequency of 5.8 GHz), WiMAX is also directed to make use of two other licensed frequencies, namely 2.5 GHz and 3.5 GHz. This allows us to increase the output power of WiMAX devices that can reach a longer distance.

Thus, if the WiFi only operates in the range of meters, WiMAX can operate in the range of kilometers. In addition, WiMAX technology is designed in a carrier-grade level. This makes WiMAX has the reliability and quality of service is better than Wi-Fi. With a range greater distance, and the ability to pass through various barriers such as buildings or trees, WiMAX suitable to be applied in urban areas that have an office and residential buildings.

Characteristics WiMAX
WiMAX is a standard IEEE 802.16 standard which oversees a variety of derivatives. This standard prescribes the use of wireless internet service provider devices for the purposes of urban networks (Metropolitan Area Network / MAN). This standard is specifically designed to meet the needs of the network will be wireless internet service provider or BWA (broadband wireless access). The presence of this technology is expected to allow access to various multimedia applications via a wireless connection with between devices even further.

802.16 standard  operates on radio frequency bands between 2 GHz to 11GHz. This standard has a transfer rate of 75Mbit per second with a low level of latency, and efficient use of frequency spectrum space.

To secure the connection who happens, this standard also supports a data encryption feature, with the setting of type errors Forward Error Correction (FEC). The distance that can be reached by this standard can be extended to approximately 30 miles, or about 48 kilometers to the throughput rate is still sufficient to transfer the data.

WiMAX is divided into two models that use each represented by two different IEEE standards. The first use of the model is the use of fixed-access, or a fixed connection who uses the IEEE 802.16-2004 standard (as a result of a revision of the standard IEEE 802.16a). This standard is included in group service “fixed wireless” because it uses a mounted antenna at the customer site. This antenna can be mounted on roofs or tall poles just like a satellite dish for TV discs. Technology from the standard which is the substitution of technologies such as cable modems, all kinds of Digital Subscriber Line (xDSL), the circuit transmits / exchange (Tx / Ex), and the circuit to an optical carrier (OC-x).

While the second utilization model, often called the use of portable or mobile use IEEE 802.16e standard. This standard is especially implemented for data communication in a variety of handheld devices, or mobile device (mobile) as a PDA or notebook.

WiMAX Forum
To accelerate the implementation and dissemination of this standard in the community and industry, in April 2001, established a forum called WiMAX (Worldwide Interoparibility for Microwave Access) Forum. The objective of the WiMAX Forum is to promote and conduct the certification of the device compatibility and interoperability of IEEE 802.16 standards and standards-based derivatives.

In addition, this forum aims to develop these devices in order to meet market demands. This forum consists of many organizations and companies such as Airspan, Alvarion, Analog Devices, Aperto Networks, Ensemble Communications, Fujitsu, Intel, Nokia, OFDM Forum, Proxim, and Wi-LAN.

WiMAX Gains
By implementing the IEEE 802.16-2004 standard, expected to get a variety of benefits, such as the availability of network services more quickly (even in areas difficult to reach by cable-based network), lower installation costs, and the ability to overcome the physical limitations inherent in the network cable-based. To maintain optimum performance, 802.16 network also supports QoS (quality of service) that is needed in the audio and video connections.

Besides the already mentioned previously, the implementation of this 802.16 standard will be profitable for operators (and the network service provider) and for the users. These advantages include the availability of wireless internet service provider on demand, in the residential broadband service, network service in remote areas, as well as allowing the exploration of (roaming) inter-MAN hotspots by the user.

With the broadband on demand, places that were not already having wireless internet service provider (due to limited coverage area cable modem and DSL), will be able to get broadband service without long waits. For modern business and large corporations, wireless internet service provider such as a need which would not be negotiable. Also for home users who long ago longed for broadband access. The presence of 802.16 standards will enable them to get DSL-quality service with an easier installation and greater distance.

As we know, has a limited distance of DSL service, which is about 5 km from the customer to the telephone exchange automat / STO. If longer than this distance, will generally decrease the quality. Therefore, DSL service usually only found in urban areas. By using this 802.16 access via network, Internet prospect location would not be a big problem anymore.

The use of 802.16 networks also allows companies to easily connect to broadband services, as should be moved from one location of certain businesses to other business locations (or when doing business or business expansion). Without having to depend on telephone cable service, the company will be able to connect their branches to head office via the Internet or VoIP network using 802.16.

WiMAX in the Future
How does WiMAX compare to other wireless internet service provider? As stated earlier, the WiMAX 802.16e standard which will be directed to provide data communications for mobile devices. However, that does not mean that this standard will replace 3G services to communicate.

The limited frequency spectrum in the 3G makes cellular service providers and wireless internet service provider concerned. They assume that these limitations could hinder the increase of data transfer via cellular networks. The operators are worried that their spectrum will not be able to meet the communication needs of voice and data customers. In this case, the role of WIMAX is required. 802.16e standard can act as a provider of data services that will coexist with 3G-based voice services. This standard can be used to expand existing services. Although it could be a complement to 3G networks, WiMAX will be focused on providing wireless data communication, and not providing wireless voice communications.

How about the market potential offered by WiMAX? Industry analysts estimate that so far contained by the market potential of WiMAX is around the figure of U.S. $ 3 billion – U.S. $ 5 billion in 2009. Who would not be tempted by the potential market for it? Not surprisingly, vendors of telecommunications equipment and network began racing to develop and market a variety of devices based on 802.16 standards.

For example, Nokia is a few times then reportedly agreed to join hands with Intel to complete the 802.16e standard, and develop mobile devices and infrastructure that can support these standards.

Intel and ArrayComm (vendor antenna manufacturer) have also established a partnership to develop a smart antenna in accordance with 802.16 standards. Do not want to miss it, Navini Networks (vendor base station and clients, which run as 802.16e standard. The client device is rumored to be available later this year (which will be followed by the availability of a certain size PC card modem and base station device in the year 2006). Telecommunication devices ) announced a range of products, among other devices.

Sprint, one of the United States telecommunications operators, also agreed to conduct testing on the production of Motorola’s WiMAX equipment running at 2.5 GHz frequency. In addition, Sprint said it would work with Intel to develop a communications device that supports WiMAX, to provide multimedia services for Sprint customers.

With vendor enthusiasm was so high, analysts predict that WiMAX-based networks may be available commercially in late 2007 or no later than the year 2008. Which may be noted from the enthusiasm that is the trend of the vendors infrastructure) that offer products based on 3G and WiMAX? Another trend is also visible are the vendors taking a compromise approach with emphasis on 3G-based services. Earlier, not long when rolled out WiMAX, many people stated that WiMAX technology will drown 3G technology. But now, vendors such as Nokia state that WiMax will become the perfect accompaniment to 3G, which allows the availability of wireless internet service provider with multimedia content. 3G services especially.

So where exactly WiMAX will lead? The analyst, in fact, still cannot  answer that question. This was triggered by the development of cellular technology that was more fluttering by some wireless internet service providers. The rise of experimentation based on the principles of 4G technology similar to that used in the WiMAX have demolished the prediction of the experts. Therefore, analysts said that the witness, whether WiMax will live side by side with wireless internet service provider, absorbed, or it will prevail against this cellular technology is an interesting attraction in the middle of this decade.