Why we need QoS in LTE

Question

Sorry for silly question but still want to know it can someone help?

Comments

Everyone has their own need/requirement for usage. Not everyone pays for high speed. Based on subscription Operator can give the services. If user is paying more it will get good QoS plus promised data rates. Network has to know how to differentiate these things. For this purpose we have different QoS.

Answer 1

There are premium subscribers who always want to have better user experience on their 4G LTE device. These users are willing to pay more for high bandwidth and better network access on their devices. Not only the subscribers but some services itself need better priority handling in the network (e.g. VoIP call). To be able to full fill this, QOS plays the key role. QOS defines priorities for certain customers / services during the time of high congestion in the network

Answer 2

An end user uses different types of services like web browsing, ftp, voice call etc.
Every service may have different types of delay tolerance and packet loss.
Due to these characteristics, LTe defined a set of QoS bearers.

There are 9 QCI values defined for LTe.
Every application, whichever is being used by an LTE subscriber need to map to one of the defined QCIs.

Due to this, operator may impose different-2 charging rules and can generate more revenue.