Problems And Solutions Of 4g Networks

Problems And Solutions Of 4g Networks4G is the raw training in wandering(a) conversation which is also known as next generation meshworks. As meter passes past technologies argon replaced by new ones for the need of new getment colloquys. This is achieved by the 4G which gives a good scene for the widened of mobile communication .As mobiles ar essential as minicomputer now ever days which sack up be used for antithetic purposes this can be achieved efficiently by new technologies resembling 4G which offers higher info accounts with seamless roaming.In todays technological world the mobile drug users atomic number 18 demanding more sophisticated and compact devices for their purposes to which manufactures are trying to develop smaller devices with increased processing and credentials which makes to develop 4G network for much improved image processing and speed of processors which can be used for using 4G applications like 3D games , high commentary camcorders with larger megapixels which need high processor to run.4G is developed to run on a whiz platform for dissimilar wireless networks which are attached through one IP core. This will help to integrate the incompatible breathing heterogeneous wireless technologies like WIMAX, UMTS, WLAN and GPRS.4G network has a very high data rate which provides 100Mbps to 1Gbps in stationary and mobile environment respectively.LimitationsAlthough 4G networks are best for mobile users they set about some limitations. virtuoso of the main issue is the operating knowledge domain which is a drawback to all communication networks like 2G, 3G also . As we know that some rural areas and some(prenominal) buildings in metropolitan cities where at that place with no network coverage in this technological world. This is due to our present communication standards and equipment which should be improved for this current technology which is a promising one to deliver communication and galore(postnominal ) others advanced applications everywhere which cant be possible unless our operating area is enhanced in an rough-and-ready manner.The second issue is the cost of network which is important to consider .As 4G network equipment is very expensive so carriers and providers should cast carefully to make the cost more veryistic and low.Potential problems4G networks being so advantageous to users it also faces some potential problems in real world. They are Security, Quality of dish, Handover.SecurityIn this digital world pledge is an important aspect in communication networks. As 4G network is non used for respectable communication but also it provides different functions like internet which is to be much secured. So we should estimate and solve the different guarantor threats of 4G networks like IP spoofing, User ID theft, Denial of service, Intrusion attacks which whitethorn cause loss of breeding or leakage of information which is considered as great threat for the users.Qu ality of serviceQuality of service is more important for 4G networks as we know that telecommunication is a real time communication like Voice over IP and video drift .In real time traffics quality of service is very important as we should estimate some factors like bit rate, jitter, delay, packet drop prospect to avoid network congestion in available bandwidth effectively.HandoverHandovers is defined as the switching of mobile nodes (MN) from one access point to other in current network or to a different network.4G networks faces lot of challenges turn handover in todays communication systems. In particular if a mobile user is undergone handover process from communication systems like GPRS to WLAN at that time there is a potential risk of communication disturbance which makes the mobile user unhappy.Potential solutionsAs we know that 4G networks are heterogeneous networks they support different functions to network operators and service providers. So to provide security for com munication 4G networks state security gateways (SEGs) which secure the different domains. For developing security in 4G networks we should gain a stumper developed by International Telecommunication wedlock named as X.805 based on Bell lab security model which consist of three security layers, three security planes and eight security dimensions which has explained below.X.805 security modelAccess control which controls illegitimate users to network.Authentication which confirms the separate identity of user.Non repudiation controls false data by giving information of data from origin.Data confidentiality which provides security to the data in the network from un clear users.Communication security which provides security to the communication channel for usage of authorized user only.Data integrity protects the data from manipulating or modifying by others.availableness is making the network available for only the authorized users.Privacy is allowing data flow to only the author ized user without any leakage.By following(a) these steps of this model at least we can defend from the existing threats and can solve the future threats which are more important in any communication network.To maintain quality of service in 4G we have to implement some protocols which are designed to maintain seamless communication to users like video conferencing and video streaming. The mobility protocols are Mobile IPV6, Hierarchical MIPV6, and debauched MIPV6 which improve quality of service for 4G networks. Since to improve more quality of service in 4G and for a better handovers across heterogeneous networks research are done for combination of mobility protocols seamless mobile IPV6 (SMIPV6) and session initiation protocol (SIP) for a better communication network.ConclusionMobile communication networks has been developed rapidly from decades and plays a vital role in human spirit .The advanced networks like 4G are not only used just for communication between people but a lso serves many functions for the users which faces many potential problems in real time to which we should find a effective solution. As 4G is a heterogeneous network function on single IP core which has many advantages like high bit rate and seamless communication when compared to others with a better quality of service and security .Up on all this new advanced 4G networks gives a great scope to future development of mobile communications in every field.