From the course: Open RAN (ORAN) Architecture, Evolution, and Deployment
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Layer 2 data flow
From the course: Open RAN (ORAN) Architecture, Evolution, and Deployment
Layer 2 data flow
(bright music) - [Instructor] In 5G NR and in Open RAN, we know there are different layers present in the protocol stack. We talked about the Layer 1 in detail with the channels and signals. Let's talk about the layer two in more detail and how the data flows between those different protocols. In Layer 2, it is basically we are getting certain IP packets from the Layer 3, which is traveling as a service data unit. So, data enters Layer 2 from the upper layer, which is Layer 3, which is a network layer in the form of IP packets. These IP packets are delivered as service data unit to the Layer 2, where they're encapsulated into the radio bearers. Let's understand this with an example. Let's considered two radio bearers here, radio bearer X and radio bearer Y. The IP packets coming from the Layer 3 are mapped into these bearers, which act as logical pipelines for different type of traffic. Now, the multiple IP packets may be combined into a single radio bearers. For instance, radio…
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