Yes, RIP - Radio Interface Protocols..LTE follows a layered protocol approach. The 5 layers can further be divided into two planes.
The following diagram will help us understand the layers, hierarchy and division of planes.
Now lets look at every single layer
1. PHY : It is also called as Layer 1 as per OSI model. This the layer where actual data is transmitted and received. This data transfer is using resource blocks. Some control mechanisms are also implemented as a function of the physical layer.
2. MAC : The second layer of the OSI model. This layer is mainly responsible for the error corrections. Terms like MIMO rank, code rate, modulation etc are related to this layer. It proves how appropriate the name "Media Access Control" is !
3. RLC : The radio link control layer. For people like me, who are working on network optimization/performance, layer 3 rings a bell! Well sometimes, it can turn out to be a nightmare.. Anyways , this layer is responsible for segmentation and concatenation of data units. Automatic repeat requests is an error correction mechanism implemented in this layer.
4. PDCP : Packet Data Convergence Protocol. : Header compression and decompression in the packet is done on this layer.
5. RRC : Radio Resource Control : pagin, maintenance, release/setup connection , QoS are the functions of this layer sitting at the top.
The following diagram will help us understand the layers, hierarchy and division of planes.
Now lets look at every single layer
1. PHY : It is also called as Layer 1 as per OSI model. This the layer where actual data is transmitted and received. This data transfer is using resource blocks. Some control mechanisms are also implemented as a function of the physical layer.
2. MAC : The second layer of the OSI model. This layer is mainly responsible for the error corrections. Terms like MIMO rank, code rate, modulation etc are related to this layer. It proves how appropriate the name "Media Access Control" is !
3. RLC : The radio link control layer. For people like me, who are working on network optimization/performance, layer 3 rings a bell! Well sometimes, it can turn out to be a nightmare.. Anyways , this layer is responsible for segmentation and concatenation of data units. Automatic repeat requests is an error correction mechanism implemented in this layer.
4. PDCP : Packet Data Convergence Protocol. : Header compression and decompression in the packet is done on this layer.
5. RRC : Radio Resource Control : pagin, maintenance, release/setup connection , QoS are the functions of this layer sitting at the top.
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