The 4g Wireless Networks

The 4g Wireless profitssThe current system has genuinely limited inspection and repair 4G is going to be The Technology which is going to be grittyly in demand. With the developing of 4G this power washbasin be utilized to its fullest potential for discordant masses in various walks of life. This is forget aid the military work of some(prenominal) nation to a great extent as the flick clarity and data transfer speed give help the provide men in the war front. Likewise for the corporate this is a thanksgiving as they raft live virtual offices all over the sphere and monitor their business by sitting in one recess of the creative activity. And even for the personal drill it is of great help to the people as it has the crack quality of proceeds, connectivity and as well helps the people in all the fields. This fourthly contemporaries helps us to gather all kinds of information which is needed without any difficulty. This 4G has lots more than benefits when com pared to the 3G and it similarly provides better helping to the people in a high take aim.IntroductionThe radio set technologies evolution has many generations much(prenominal) as 1G, 2G which is of piano tuner cellular system. The wireless systems which are currently in make use of provide barely limited services. The substance abusers of 2G and 2.5G are asking for better quality in data, multimedia and instance similar to the quality of the wired. only the data rate required for it is very(prenominal) high, which is also beyond the 3G capabilities. This actuate in the research of the Fourth clock wireless engagement s (4G). The 4G vision unifies many sprightly and the wireless intercommunicates. Anyway, there is a rudimentary difference to the wireless cellular and the wireless local area networks.The wireless networks in the fourth generation allow have different networks and it pull up stakes overlie one with the other(a). The mobile institutionalise whic h has multiple interfaces go forth be fully equipped which will enhance its mobility. The 4G wireless networks will have different kinds of wireless components which will provide large number of service to the users, so that the people net communicate with the help of these networks and architecture.The 4G wireless networks are very flexible and will provide wide range of technology to the users. They will not only be able to use the internet services precisely also will be able to use the other services deal voice and some other day-to-day applications. They not only help in improving the services but also help us to obtain wide range of information and services.RequirementsThe 4G is a safe and sterilise platform and many services corporation be made use of it. It gives the complete satisfaction to the users.Low HandoffThis handoff will cause the delay in the services and it will also create disadvantage to the communication of the data. accordingly this should be managed f or the better communication.AccessThe addition is the important thing in the 4G networks as it gives connectivity to the users and it also provides the end services.NetworkThe network should be of multi-service so that it will not only give the basic approach shot but also gives a wide range of services to the people who will need voice and other services.BroadbandThe 4G network integ grade using the high end platform and it is also cheaper and effective to use, and it terminate be retained easily.Security service For success of 4G, the important aspect is protection and to obligate sure that the networks are safe and protected.ModelsThe 4G has different range of personal mannerls and it behind be made use as required.Optimal networksIn this, according to the savvy the optimal network for the service is selected and the connectivity is selected based on the internet network layer.Hybrid networksThe core layers will be bear and the layers will have networks of different kin ds which will be presented layer below layer.Heterogeneous networksThis deals with different and all kinds of networks which has one common network. When the core layer is the same it minimizes the overheads and will also improve in the performance of the network.The fourth generation wireless network comprises 4 basic layers. They are Wireless Wide bailiwick Network (WWAN), Wireless Metropolitan Area Network (WMAN), Wireless topical anesthetic Area Network ( wireless fidelity), and Wireless Personal Area Network (WPAN).WPAN NetworksWLAN NetworksWMAN NetworksWWAN NetworksThe networks of the lower take aims has high bandwidth and play a small area of networking and sometimes the networks of the lower level can play the role of the networks in the high level.The WPAN has the shortest network connectivity. It has connection only to the personal needs like the Bluetooth can be used with it. It covers only a relatively short distance.The WLAN also covers a short area, but more than t he WPAN. It covers the local area. For e.g. the use of internet in an area.The WMAN covers more than the WLAN. It provides communication between a metropolitan area.The WWAN is the wide area but it does not have a very high bandwidth. The use of cellular, GSM can be accessed with this network.Wireless Fourth Generation ArchitectureInter Technology Hybrid Unit (HU)This hybrid whole acts as a bridge between the different layers. It combines many networks to access different technologies. The hybrid units are of different types, they areWWAN-WMAN This node provides a link between the WWAN and the WMAN network. For the WWAN it can act as the base station and for the WMAN it acts as a subscriber station.WMAN-WLAN For the WLAN this unit acts as an access point, and for WMAN, it is the subscriber station.WLAN-WPAN The networks WLAN and WPAN will be interconnected using this unit. It can operate the Bluetooth the ad-hoc networks.The main components of the cellular networks are the Mobile Sw itching cracker (MSC), Home location Register (HLR), Serving GRPS Support Mode (SGSN).Properties of 4GNetwork Architecture It has Hybrid network architecture.Driving Architecture It has converged data and voice over IP.Switching It has digitalized switching with packetized voice.Radio Access MC-CDMA, OFDMA.Database ELHR, VLR, EIR, AuC.Data rates It has data rates of 100Mbpsc.Roaming It has global roaming.Compatible It is compatible to 3G.Handsets Numerous mode voice, data streamed video with higher data rates.Applications Internet, MMS, Multimedia, HDTV M TVBandwidth It has bandwidth of 100MHzFrequency Band It has higher frequency bands of 2-8 MHzComponent tendency It has smaller antennas, software multiband and wideband radios.FEC Tech It has concatenated coding scheme.IP exclusively IP (IP6.0)As the wireless communication system develops the expectations and the demand among the people keeps increasing. These wireless networks work on their capacity and limits also has some de cisive period.The re-configur skill can be done at any level, and it will be useful for the network provider as well as the user perspective. This provides selection between the alternate networks and is based upon all the issues.The re-configurability mechanism tells not only about the physical layer but also the rafts of the entire protocol. These 4G systems will provide many features to the users and it will provide lengthwise connectivity. The accessing, roaming and the other dynamic features are very useful and everything is obtained at a minimal cost. They can also choose between the other wireless networks if required.The following figure shows about the interoperability of the 4G layers.The 4G networks usually support the global roaming and the end-to-end services in the wireless networks, and these thing usually depend upon the shade of Service issues (QoS). The capacity and the bandwidth for the 4G should be many times more than that of the 3G to affect the business r equirements. The 4G depends not only upon the speed and version but altogether for its service and the quality.The main difference between the 4G and the previous generations is that in 4G both(prenominal) the voice and data can be sent, but in the other generations the voice and only a small amount of data can be sent across. The 4G can be used wireless with the digital Subscriber line (DSL). The people throughout the world would be benefited and can use for communication, as its service and quality are very good. They can even do business from one part of the world to the other as it has good speed and is reliable. The people who have not hitherto used the 3G can directly hop on the 4G as it is more useful and of good speed. It will be based on the network IP technology. 4G is more useful than Wi-Fi. In Wi-Fi the distance matters and it can be accessed only in the slow path. But this 4G is faster and it can be accessed from any place and it is also cost-effective.Quality of Ser viceThe quality of service plays a very challenging role in the 4G networks. It provide a wide range of service and a better quality to the users. thither are 4 types of quality of service, they are1. Packet- level Quality of serviceThis QoS refers to the packet level service which also takes care of the error rate, and the infinite occupied by the buffer. It has a good packet quality which is very helpful to the users.2. Transaction level Quality of ServiceThis transaction level depends on the transaction time it takes to complete a service and also about the packet loss. Some of networks can accept the packet loss but the others cannot.3. Circuit level Quality of ServiceThe tour of duty level service is about the calls which have been connected and also about the circuit level transfer and other transactions. It provides a good quality of service for the calls and services.4. User-level Quality of ServiceThe user level quality depends upon the application and the other services. It also depends upon the mobility of the users which may support the quality of the network.Conclusion4 G is developed with the following aspects and advantagesIts speed would be 50 times high than 3G. The expected bandwidth of 4G is about 10Mbps.It has options of three-dimensional virtual reality, video and the ability to feel at the event even if you are not present physically there.We get to interact with people, products and know about the places when the cyber and real world merge.The smart card in your mobile would advice you to do what next as it will be monitoring your movements.Last but not the to the lowest degree 4G will provide access and support for authentication, paying off bills, security and also supports whichever has mobile specific services.