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What are the advantages to be having PCO IE in LTE

+3 votes

As far as my understanding PCO helps to know more information about the network like default gateway address, DNS address, etc.. But what happens if we dont have PCO IE feature in LTE. I want to undestand what are the advatages with PCO in lte.

Thanks in Advance.

posted Nov 12, 2014 by Naveen Yanamaddi

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Are you talking about any specific case of PCO in general as PCO is applicable at many places i.e. NAS, Diameter etc etc, please clarify more on the query.
Thanks for the response salil.

I am talking about general situaions where PCO IE is being sent in the request. Either UE to Network or vice-versa.

1 Answer

0 votes

In a NAS message Protocol Configuration Options (PCO) can be carried by many different messages as follows.
PDN Connectivity Request

Data Structure of PCO is also very flexible (gives lot of difficulties in message decoding process). The purpose of the Protocol Configuration Options (PCO) is to provide additional optional information about the destination network that the UE is connecting to. e.g. when a UE connects to the Internet it will be given an IP address and it will be given a PCO that includes the default gateway IP address, the DNS server address, etc. All of these additional type of information are given in the PCO and upto the network to support or not support.

Read more at:

answer Nov 12, 2014 by Salil Agrawal
Thanks Salil.

So you say it is additional feature that LTE provides. Am I correct?
Not additional feature but flexi IE though it depends what u call a feature.
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