The Revolution of Network Technology: 3G and 4G Wireless Network

Less than a decade ago, the telecom operators in the U.S., Western Europe, and Japan were upgrading their existing networks to high-speed 3G technologies. Now the world telecommunications industry is about the switching to the next-generation super-fast 4G technologies.

In terms of architecture, it has been very challenging to provide platform, and ability to render service with high availability from the providers of the first generation (1G) networks to 4G

This article is a survey of all aspects of communications high- altitude platforms (HAPs), this balloons and aircraft stationed in the stratosphere between 17 and 22 kilometers. The technique can be considered as a new solution for the provision of telecommunications services. This poll contains some information and benefits . The following table shows the basics of the types of high- altitude platforms and comparison of HAPs, terrestrial networks , satellites , followed by information frequency bands allocated for high- altitude platform stations . The survey concludes types of applications and services offered by this technology.

Cellular Broadband is used to access Internet on mobile devices, such as mobile phones, tablets and mobile dongles. There are currently three different technologies used to access the Internet from a mobile device, these include 2G, 3G and the current 4G. Cellular broadband is a subscription-based service, which usually comes as part of your mobile tariff from your provider. However, you can get separate tariffs just for cellular broadband, these are used in laptops and tablets to provide Internet access on the move. ITU Telecom World research indicates that 90% of the world is covered by a 2G signal; where as 45% of the world has a 3G signal (www.itu.int). This shows that there is a high demand for this service, and it is a very popular option to access Internet while bring mobile. This type of service is something that could be incorporated within our health authority network, for example a 4G connection can be used as a backup internet backbone as well as employees using the service to access

5G aims at building hybrid networks utilizing both the Wireless LAN concept and WAN design. Thus, the world would have base stations everywhere providing ubiquitous network coverage to users at high speed. For example, a user walking on road is browsing internet using GPRS (General Packet Radio Service-WAN design). The moment he enters a mall with Wi-Fi (LAN design), seamless hand-over from GPRS to Wi-Fi would take place without the user’s

While much of the world is connecting their personal devices to fast data sharing 4G mobile networks, on other hand industry pioneers are shaping next generation networks to feed the world’s increasing

As 3G technologies are broader in use when compared to 4G are in limit [2]. The major difference between two is in the existence of yielding technologies. Many technologies EV-DO, HSPA and WCDMA these drop under 3G network. Whereas, many mobile phone companies are intelligent to dup their technologies as 4G; such as WiMax, LTE, and UMB. But, none of these technologies gives detailed description set forth by the 4G network standard, so they are often mentioned as Pre-4G or 3.9G. Here, are the some important points which are compared between two efficient technologies.

4G networks offer much more coverage than other systems such as Wi-Fi, which forces users to depend upon hotspots in each area you visit. Since 4G offers a coverage of 30 miles and more, users would be assured of complete connectivity at all times.

4G or fourth generation technology is a mobile communication standard intended to replace 3G allowing wireless internet access at much higher speeds!

It is envisioned that 5G will interconnect everything to the mobile network wirelessly that can be characterized by the tremendous increase in the number of connectivity and traffic volume density [25]. According to the forecast, the capacity density (i.e., the required capacity for a given area) will increase by 1000 times compared to the capacity density in current mobile network (i.e., 4G/4.5G) [26]. The clear effect of this increase is more capacity

It is anticipated that 4G speeds could be as high as 100 Mbps. Thus, 4G will represent another quantum leap in mobile Internet speeds and picture quality. Ericsson confirms that 4G could bring connection speeds of up to 50 times faster than 3G networks and could offer three-dimensional visual experiences for the first time. The following graph represents what has been the typical progression of wireless communications:

With the development of mobile devices and web applications, people tend to access data, audio, picture and video from their mobile devices anywhere and anytime, thus, wireless mobile telecommunication becomes more and more important. Cellular network technology is the basis for the wireless mobile telecommunication. And the generation is used to describe the development history of wireless mobile telecommunication standard and technology, from first generation (1G) to fifth generation (5G). Fourth generation (4G) is currently widely commercialized around the world by different wireless service providers, or carriers. Mobile WiMAX and Long-Term Evolution (LTE) are two technology categories in 4G systems and the spread spectrum radio technology behind 4G is orthogonal FDMA (OFDMA). 4G not only provides internet speeds that are five times faster than 3G, but also reduces likelihood of losing the connection significantly, solving the problem of unreliability. with sudden drops in speed and complete outages. LTE is based on the GSM/ EDGE and UMTS/ HSPA network technologies, offering high speeds and low latencies over long distances. FDD-LTE and TDD-LTE are two different standards for LTE 4G technology. Besides, LTE Advanced is a major enhancement of the LTE standard, in order to reach and surpass the ITU requirements.

Introduction The world lives a large evolvement in all life aspects. Everything moves in the comfort direction. One of these aspects is the technician aspect and it is an important part of everyone 's life as every thing around you become technician. In your room there is a TV, mobile, laptop...etc. Even most of kids ' toys became in need to a remote control. The wireless technology means no need to wires or cables. Wi-fi and Bluetooth are examples of that. Mobile wireless industry now is in the head of all industries due to the increasing in mobile usage day after day. It passed through several generations until it reached this great evolvement which we see now. It started with the first generation 1G with analog communication. In the second generation 2G the digital messaging was added to the analog communication. In the 3G, both calls and messages became digital. In the 4G –which we have now- the improvement was in the usage of a large bandwidth. The generation which is expected to appear is the 5G. The 5G is purely based on the 4G and will give a huge level of bandwidth which we cannot imagine. Furthermore, there are two predicted generations 6G and 7G. The 6G will be a satellite based network with speed up to 1 GB. This leads to the space roaming problem which shall be solved by the 7G. The report is organized as follows. First and Second section provides literature review of past and current mobile communication generations from first generation (1G) to fourth

Information and communication technologies have become advanced and efficient in last few decades. The improvement is radical and it has made the broadband technologies and internet more robust and wide spread. Internet has become an integral part of any communication technology. It carries various type of information and offers different type of network services. The speed of data transmission has also improved. [1]Now days, Internet can be accessed from any smart phone, PDA, laptop, computer and several other smart devices. Wireless internet connection through wireless LANs at public places like airports, stations etc. All these have led to the wireless mesh network. [2]

3G could finds an application in wireless voice telephone, mobile internet access, fixed wireless internet access, video calls and mobile TV. 3G show all collection of technology to