top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

Facebook Login
Site Registration

Why LTE has two different path for control plane and data plane?

+3 votes
104 views

LTE is whole IP and for IP both the control and user plane are in anyway 2 different paths for packet transmission so I would to know why there is a need for the control and user plane differentiation.

posted Jul 7, 2015 by anonymous

Share this question
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

1 Answer

0 votes

No dobut, LTE is an IP based technology. Information between different nodes of LTE are is exchanged by using the IP protocol.
But if you look each protocol stack of each interface then you will find every interface has different application protocol on top of IP layer.
For example:
S1- MME: This interface also uses underlying IP layer but on top of IP layer, SCTP (transport protocol) and S1-AP (Application Protocol is used). Similarly there are number of interfaces like S1-U (interface between SGW and eNodeB), S11 interface (MME to SGW) and so on interfaces uses different application layer to fulfill different requirements.

These are the few reasons having different path for control plane and data plane.
Please have a look into wireshark logs then you will come to know after IP address most of interfaces have different application layer protocols.

answer Jul 12, 2015 by Alok
Similar Questions
+2 votes

I found 1st bit which is used to indicate that packet carrying Data/Control information. My question is that why first bit is used even packet itself known as "PDCP Data PDU".

+2 votes

I just know CUPS stands for control and user plane separation but what is the advantage of it ? Has any network operator ever deployed CUPS solution in their network ?

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...