So far these speeds are only reachable with wired LANs 1415 Another key change

So far these speeds are only reachable with wired

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be reached for a moving user and 1Gbps for a stationary user. So far, these speeds are only reachable with wired LANs [14,15]. Another key change in 4G is the abandonment of circuit switching. 3G technologies use a hybrid of circuit switching and packet switching. Circuit switching is a very old technology that has been used in telephone systems for a very long time. The downside to this technology is that it ties up the resource for as long as the connection is kept up. Packet switching is a technology that is very prevalent in computer networks but has since appeared in mobile phones as well. With packet switching, resources are only used when there is information to be sent across. The efficiency of packet switching allows the mobile phone company to squeeze more conversations into the same bandwidth. 4G technologies would no longer utilize circuit switching even for voice calls and video calls. All information that is passed around would be packet switched to enhance efficiency. 3.2 . Comparative quotient between 5G and 4G 4G and 5G wireless access technologies offers Ethernet speed on mobile devices to experience the triply play services as explained above. LTE and WiMAX are two different technologies to achieve 4G defined speeds. New standard proposals or releases beyond 4G are submitted to standard bodies like 3GPP, WiMAX Forum or ITU-R. Ideal 5G model will accommodate the challenges and accommodate the short falls of the 4G Technology and 4G deployment experiences.
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Comparative studies on 3G,4G and 5G wireless technology 92 | Page Table 1 :Comparism between 3G and 4G. Major requirement driving architecture 3G (Including 2.5G, Sub3G) 4G Predominantly voice driven; data was always add on Converged data and voice over IP Network Architecture Wide area cell-based Hybrid: Integration of wireless LAN (WiFi, Bluetooth) and wide area Speeds 384 Kbps to 2 Mbps 20 to 100 Mbps in mobile mode Frequency Band Dependent on country or continent (1800 2400 MHz) Higher frequency bands (2-8 GHz) Bandwidth 5-20 MHz 100 MHz (or more) Switching Design Basis Circuit and Packet All digital with packetized voice Access Technologies W-CDMA, 1xRTT, Edge OFDM and MC-CDMA (Multi Carrier CDMA) Forward Error Correction Convolutional rate 1/2, 1/3 Concatenated coding scheme Component Design Optimized antenna design, multi-band adapters Smarter Antennas, software multiband and wideband radios IP A number of air link protocols, including IP 5.0 All IP (IPv6) To understand the necessities and uses of 5G could be raised once the 4G rollout is completed and experienced. Thus typical 5G concept would be raised in somewhere around 2013-2015. Expected speed will be multiple of Gigabit Ethernet [10,12]. This technology would be mainly used in back hauling telecom networks rather than end user access. 4G offers theoretically closer to Gigabit Ethernet whereas users expect multiple Gigabit speed from 5G.
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