Uplink-Downlink Scheduling Algorithm for Improving Quality of Service in Small Cell Network

Author Name(s): Cuminious Okram, Veena Gulhane
Author Email: cuminiousokram@gmail.com

Abstract

Mobile communication is emerging rapidly with the passages of time along with large number of user increasing day by day. A lot of work on QoS is going on but still different issues are coming up. Due to nonavailability of the radio channels many data packet gets dropped. Since the resources are limited, it is important to utilize the resources properly to provide better service to every customer. In this paper we present mobile network based small cell network with uplink and downlink scheduling algorithm. The network performance is evaluated in terms of its quality of service parameters such as throughput, delay and packet delivery ratio. After implementing uplink and downlink scheduling algorithm on MANET the resulting quality of service parameters show significant improvement as compared to simple small cell network. This system is designed on Network Simulator (NS2).

Introduction

A mobile ad-hoc network is made up from a group of MANET routers. These routers put in order and support sending the way structure among themselves. As the net approved design router, MR may made joined group of hard growths. The mobile node transmits the signal within its transmission range as shown in figure 1. In MANET the mobile nodes are present in the small cell networks. The position of the mobile nodes goes on changing continuously hence the topology of the mobile network also frequently changes. Small cell help in bringing out the connectivity in remote areas where terrestrial satellite connection is very slow. But small cell itself is not sufficient. To solve this, scheduling is one of the solutions to use most of the resources [1]. The advantages of small cell network are lower delay, in-building coverage, etc. Figure 2 shows the architecture of small cell network which consist of number of mobile nodes with base stations. Here uplink tends to link from mobile station to base station and downlink means base station to mobile station. Our algorithms provide better uplink and downlink connectivity in between source to destination. By using uplink and downlink scheduling algorithm, the results shows that our approach provides a significant improvement in throughput, delay and packet delivery ratio

Conclusion

By analysing the result, improvement of various parameters of Quality of Service proves that through proper scheduling, user needs of service are fulfilled. The radio channels in between transmitters and receivers are available every time and hence the probability of packet dropped gets reduced. Also due to uplink and downlink scheduling algorithm the congestion of packets stay in control and resulting that the packet deliver ratio improves the behaviour of the designed system. Overall Wi-Fi based mobile ad-hoc network deliver better performance with uplink and downlink scheduling algorithm. The researchers are continuously working on the new method of uplink and downlink scheduling. The designed algorithm can be utilized in the eNB of small cell network in 4G and 5G architecture.

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