From the course: 4G LTE: Architecture, Protocols, Call Flows, KPIs, Optimization, Performance Analysis

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RLC ARQ procedures: Error handling techniques

RLC ARQ procedures: Error handling techniques

From the course: 4G LTE: Architecture, Protocols, Call Flows, KPIs, Optimization, Performance Analysis

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RLC ARQ procedures: Error handling techniques

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So, we understand that RLC has one important functionality of error detection and correction, which is done by the automatic repeat request schemes or different mechanisms. Now, three different ARC schemes we are going to talk about. One is stop and wait ARC protocol. So we understand that what is the significance of ARC, it will basically acknowledge and not acknowledge the information which is being transmitted from the transmitter and it is to be assured that it has been received properly or not. So if there is an acknowledgement, it means that the information which has been sent from the transmitter has been received properly at the receiver end. And if there is a non-acknowledgement, it means it has not been received. In that case, there are different mechanisms that can be adopted to resend it again. One is the stop and wait where exactly whichever the packet or the information which has not been received properly, that will be resend and till then it will be wait for another…

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