Efficient Scheduling Framework for Fair Bandwidth Allocation in Wireless Networks

Abstract

Better and fast communication is the key to the changing world. As the number of connected newlinedevices has increased, so has the pressure upon the communication industry. The biggest challenge newlineis to provide connectivity to all with minimum guaranteed Quality of Service (QoS). Managing newlinewired networks has always been a task a hand but with the enhancement towards mobility and the newlineincreasing number of trend of the consumers towards mobile devices has led to revolution in the newlineWireless Communication Technologies used. These wireless technologies range from mobile newlinenetworks to Wi-Fi, Wireless Sensor Networks to Wireless Adhoc Networks and the list goes on. newlineData transmission has a very crucial role to play in these times. This transmission of data has to be newlinefast, secure, timely, error free, having good recoverability from errors and support from majority newlineof devices. newlineOut of all the existing technologies in wireless communication, LTE has emerged as the major newlineplayer. LTE was introduced about 8 years ago with maximum speeds up to 100 Mbps which was newline10x faster than existing 3G networks. LTE-A network offers data rates up to 1 Gbps which is 10x newlinefaster than LTE. LTE improves the user experience through increases in bandwidth efficiency and newlinereduced latency. The first LTE networks (3GPP release 8) were confined to maximum frequency newlineof 20 MHz. But LTE-A increased the frequency to 100 MHz by combining the frequency of up to newline5 carriers. LTE-A not only allows the user more spectrum, it does so more efficiently by increasing newlinethe number of antenna paths. LTE-A possesses a feature of Carrier Aggregation (CA). CA is newlinebasically used to increase bandwidth by combining various spectrums of bandwidth available. For newlineexample, if we have three spectrums x,y and z Hz each and we plan to use them simultaneously, newlinewe can combine the spectrums to have greater bandwidth like xy and z Hz or x and yz Hz or xyz Hz. newlineThis dynamic allocation of spectrum is very useful if we are transferring large chunks of data. LTE newlinesupports a maximum of 8 layers for downlink and