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Which NAS message is sent by UE to establish a dedicated bearer in LTE network ?

+2 votes
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I want to know what are all signalling message exchange between LTE network nodes while establishing a dedicated bearer ?

posted May 31, 2015 by Harshita

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2 Answers

0 votes

For UE initiated dedicated bearer creation, UE sends Bearer Resource Allocation Request to MME.

Please find more detail from below link.
http://howltestuffworks.blogspot.in/2012/03/bearer-resource-allocation-request.html

answer Jun 1, 2015 by Veer Pal Singh Yadav
0 votes

The Create Bearer Request is used to create a dedicated bearer in LTE.

Extract from 3GPP

The direction of this message shall be from PGW to SGW and from SGW to MME/S4-SGSN, and from PGW to ePDG
The Create Bearer Request message shall be sent on the S5/S8 interface by the PGW to the SGW and on the S11 interface by the SGW to the MME as part of the Dedicated Bearer Activation procedure.
The message shall also be sent on the S5/S8 interface by the PGW to the SGW and on the S4 interface by the SGW to the SGSN as part of the Secondary PDP Context Activation procedure or the Network Requested Secondary PDP Context Activation procedure.

The message shall also be sent on the S2b interface by the PGW to the ePDG as part of the Dedicated S2b bearer activation with GTP on S2b.

answer Jun 2, 2015 by Saurabh Srivastava
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