International Journal of Recent Technology and Engineering (IJRTE) ISSN: 2277-3878, Volume-8 Issue-2, July 2019 2589 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number: B2818078219/19©BEIESP DOI: 10.35940/ijrte.B2818.078219 Abstract: LTE is the abbreviation of Long Term Evolution. LTE networks are developed to provide enhanced Quality of Service (QoS), as today’s cellular world and its high speed multimedia applications demand variety of QoS along with a high speed data rate. Scheduling is a key feature of any network to achieve QoS requirements. The QoS widely depends on the distance of user from the Evolved- Node-B (eNB). The user near eNB experience good QoS and the user far away from eNB experiences poor QoS. The system performance is widely affected due to this. Hence, the ultimate and supreme goal of this research work is to enhance the QoS of the cell edge user and improve network performance. Proposed scheduling algorithm i.e. Improved Extended Modified Largest Weighted Delay First (IE-MLWDF) improves the cell edge throughput along with QoS of the cell - edge users. The paper compares IE-MLWDF with its previous versions namely Modified Largest Weighted Delay First (MLWDF) and Extended - MLWDF in terms of various network parameters. This paper presents a detailed analysis of a scheduling algorithm to enhance QoS of cell edge users to provide better network goals. This algorithm can further be extended or improved to make it more effective. Index Terms: E-MLWDF, EPC, EPS, E-UTRAN, GSM,IE-MLWDF, LTE, MLWDF, Scheduling. I. INTRODUCTION LTE is a project named by Third Generation Partnership Project (3GPP) [1]. This is new and advanced level for wireless networks and essentially LTE-A is the upgraded form of LTE [2]. The 3GPP LTE is very flexible radio interface. As per work on the latest release of the LTE standard, the main attention is just to slowly build the routes for the further evolution of LTE, known as LTE-A [3]. The primary objective of this evolution is to reach and even exceed the requirements of International Mobile Telecommunications - Advanced (IMT-A) [11]. Those necessities will include further important advancements in terms of the performance as compared to the current cellular systems [4]. Wireless communication services have seen a drastic growth, globally, in the past two decades, starting from the analog services right up to the current digital cellular services [5]. With respect to (w.r.t) the availability and number of subscribers, wireless communication services have surpassed the fixed line telephony services [6][11]. Revised Manuscript Received on July 06, 2019. Himani Lodwal is presently a student of ME in Department of Electronics and Telecommunication, Shri G. S. Institute of Technology and Science, Indore India Dr. Anjulata Yadav, Associate Professor in Shri G.S. Institute Of Technology and Sc. Indore (MP), India. Manish Panchal is working as Associate Professor in the Department of Electronics and Telecommunication Engineering of the Shri G S Institute of Technology and Science (SGSITS) Indore India In India itself, as compared to the fixed line communication, the wireless communication penetration is about four times more. Mobile subscribers have increased worldwide, around one billion in less than twenty years [7]. The three most prominent driving forces behind evolution of mobile broadband which led to development and deployment of LTE were the growth in high bandwidth mobile applications like video sharing, IP-TV etc, the increased number of smart phones and the competition among service providers leading to flat revenues. Some more potential key components of LTE evolution lay the foundation for LTE-A and more advanced technologies [8]. II. SYSTEM ARCHITECTURE AND RADIO FRAME FOR LTE / LTE-A The simple principle behind LTE architecture is its functional decomposition. The features are fragmented into some functional entities. 3GPP has specified a new packet core called Evolved Packet Core (EPC) network architecture to support the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) over a decrease in number of network components [3]. The Service Provider experiences a flawless mobility with LTE architecture. It provides simpler functionality. It reduces connections and also the handovers to other permanent lines and wireless technologies. Fig 1 shows the logical depiction of LTE network architecture. The LTE architecture is very much analogous to GSM architecture [3]. LTE architecture consists of 2 components: (1) Core Network and (2) Access Network. Access network can be defined as Evolved Universal Terrestrial Radio Access Network (E-UTRAN) [1]. Core network is totally Packet Switched. Evolved Packet Core (EPC) is the Core Network in LTE [8]. The architecture reduces connections and also the handovers to other permanent lines and wireless technologies [2]. The functionalities like access control functions, network management functions and resource management are achieved with the help of core network and access network. An evolved system is formed by E-UTRAN and EPC [3][5]. To expand the system strength, ciphering has been introduced and characterized by using an extra layer to protect security key and other important information. EPC also contains network traffic details and network control units, defining the individuality, uniqueness and civil rights of a user and tracking the activities like authorization, authentication and the accounting server [4]. A Quality of Service (QoS) Aware Scheduling Algorithm to Boost QoS of Cell-Edge Users in LTE Networks Himani Lodwal, Anjulata Yadav, Manish Panchal