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TS 29.405 (CT4)
Nq and Nq' Application Protocol (Nq-AP)

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V15.0.0 (PDF)2018/06  21 p.
V14.0.0  2017/03  22 p.
V13.1.0  2015/12  22 p.

Rapporteur:  Mr. Shi, Xiaoyan
See also:  PCC-related TS/TR

This document describes the procedures, messages and information elements over the Nq and Nq' interfaces between the MME/SGSN and the RCAF to transfer the IMSI/APN information associated to the eNodeB or E-UTRAN cells or UTRAN Service Area experiencing user plane congestion.

The Nq interface is located between the RCAF and the MME. The Nq' interface is located between the RCAF and the SGSN. Both the Nq and the Nq' interfaces use the Nq-AP protocol. The Nq-AP protocol described in this document uses a Type, Length and Value (TLV) encoding of messages over an SCTP transport.


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