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DSCP marking EPC Core for the traffic packet?

+1 vote

Do we have DSCP marking (for prioritization of traffic) on the outer IP header (the one above GTP) and how do they look? What specification I can look into?

posted Aug 11, 2013 by Jai Prakash

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1 Answer

+2 votes

The technical specification TS 36.414 section 5.4 Diffserv code point marking says:

“IP Differentiated Services code point marking shall be supported. The mapping between traffic categories and Diffserv code points shall be configurable by O&M based on QoS Class Identifier (QCI) Characteristics and others E-UTRAN traffic parameters. Traffic categories are implementation-specific and may be determined from the application parameters”

which means, that there is DSCP marking for Outer IP Header (above GTP) let us know if you have any doubt further?

answer Aug 11, 2013 by Salil Agrawal
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+1 vote

I read that when PGW's packet handler process maps an IP packet to a EPS bearer, it do DSCP marking.
And I also read DSCP marking is associated QCI of a bearer. How DSCP marking will help out to get maintained QoS of a bearer.

+2 votes

How P GW will select the S GW for Incoming Packet?
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1. UE is in idle mode.