LTE - STACKS
Lets see the LTE complete Stack architecture with respect to MME & SGW from the EnodeB. EnodeB is nasically a protocol converter, which converts the messages received from MME with a different set of Stack layers. It Take the NAS messages & encapsulate it to the OTA stack & send it to UE's.
In Downlink, EnodeB receives 3 kind of stack messages.
1. From MME (Control Plane - S1 Interface)
2. From SGW (Data Plane - S1-U Interface)
3. From neighbour EnodeB (Control & Data Plane - X2 interface)
Lets see the Stack between UE, EnodeB & MME
Similarly you can see the Stack between UE, EnodeB & SGW:
The EnodeB to EnodeB stack comprises control & Data Planes in the X2 Interface for carrying the control information & data respectively.
Stack for X2 Interface control plane:
Stack for X2 Interface Data Plane:
I hope the you can understand the complexity in the EnodeB stack & its importance in the LTE architecture.
Lets see the LTE complete Stack architecture with respect to MME & SGW from the EnodeB. EnodeB is nasically a protocol converter, which converts the messages received from MME with a different set of Stack layers. It Take the NAS messages & encapsulate it to the OTA stack & send it to UE's.
In Downlink, EnodeB receives 3 kind of stack messages.
1. From MME (Control Plane - S1 Interface)
2. From SGW (Data Plane - S1-U Interface)
3. From neighbour EnodeB (Control & Data Plane - X2 interface)
Lets see the Stack between UE, EnodeB & MME
Similarly you can see the Stack between UE, EnodeB & SGW:
The EnodeB to EnodeB stack comprises control & Data Planes in the X2 Interface for carrying the control information & data respectively.
Stack for X2 Interface control plane:
Stack for X2 Interface Data Plane:
I hope the you can understand the complexity in the EnodeB stack & its importance in the LTE architecture.
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