Basics of Quality of Services (QoS)

Quality of service (QoS) is becoming an increasingly important aspect of today's world in the infrastructure of networking. QoS is not only necessary for voice and video streaming over the network, it is also important for supporting the growing Internet of Things (IoT). But it is also a challenging task in the networking. Providing a QoS guarantees becomes more difficult when you add the complexities of wireless and mobile networks. This paper elaborates the concept of QoS, Techniques to improve the QoS such as scheduling, traffic shaping, admission control. In scheduling there are three types FIFO queuing, Priority queuing and weighted queuing. In traffic shaping there are Leaky bucket and Token bucket techniques discusses. Also here we introduce the two deploying QoS model name as Integrated Services (IntServ) and Differentiated Services (DiffServe).