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TS 24.301 (CT1)
Non-Access-Stratum (NAS) protocol for EPS

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V15.1.1 (Wzip)    2017/12    507 p.
V14.6.0 (PDF)    2017/12    478 p.
V13.11.0    2017/12    458 p.
V12.13.0    2016/12    368 p.
V11.14.0    2015/03    336 p.
V10.15.0    2014/09    315 p.
V9.11.0    2013/03    285 p.
V8.10.0    2011/06    264 p.

Rapporteur:  Ms. Liu, Jennifer
See also:  EPC-related TS/TR     draft-TS 24.501 (NAS for 5GS)

This TS specifies the procedures used by the protocols for mobility management and session management between UE and MME in the EPS. These protocols belong to the non-access stratum (NAS).

The EPS Mobility Management (EMM) protocol provides procedures for the control of mobility when the UE is using the E-UTRAN. The EMM protocol also provides control of security for the NAS protocols. The EPS Session Management (ESM) protocol provides procedures for the handling of EPS bearer contexts. Together with the bearer control provided by the access stratum, this protocol is used for the control of user plane bearers.

for V13, V14, V15:    (F) Service request handling for EMM-REGISTERED without PDN connection   |   (F) No support for dedicated bearers in NB-IoT RAT
for V14, V15:     (F) Correction to attempting to ATTACH/TAU for exception data   |   (F) Correction for support of multiple TAC in shared network deployments   |   (B) Enhancement of APN rate control for MO exception data   |   (F) CP data back-off timer for EWT CP data received from lower layers   |   (F) Correction to SERVICE ACCEPT handling at control plane CIoT case   |   (F) T3440 starting for UE attaching without PDN connections
for V15:    (F) Correction of inconsistency in EMM timers table   |   (F) Handling of extended EPS quality of service IE and extended APN-AMBR IE   |   (F) Correction of the handling of counters for "SIM/USIM considered invalid" events   |   (F) Correction of Additional update type for CIoT   |   (F) Attach and Detach Collision   |   (F) Attempting EPS Attach for Emergency Bearer Services   |   (F) Alignment on ESM cause #66 on back-off timer handling   |   (F) Correction on UE behaviour of CP back-off timer   |   (F) Adding missing abnormal case handling for T3448   |   (F) Correction of Extended EPS quality of service IE naming   |   (F) Bit allocation correction in EPS bearer context status   |   (B) Network policy indication on LTE call redirection to GERAN   |   (F) Correction on TAI list coding   |   (F) Storing CE Mode B in MME   |   (B) UE behaviour on congestion for MO MMtel voice call   |   (F) Handling IMS calls when starting timer T3325   |   (B) Signalling of UE's additional security capabilities   |   (C) Support for Reliable Data Service with PtP SGi Tunneling   |   (B) Security algorithm support for Dual Connectivity   |   Assigning IEI values for new IEs by Rapporteur

click  here  to see the ToC for advanced Rel-15 Word version


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1   Scope [R8]   PDF-p. 20
2   References [R8]
3   Definitions and abbreviations [R8]   PDF-p. 23
4   General [R8]   PDF-p. 30
4.1   Overview
4.2   Linkage between the protocols for EPS mobility management and EPS session management
4.2A   Handling of NAS signalling low priority indication [R10]   PDF-p. 31
4.3   UE mode of operation
4.4   NAS security   PDF-p. 40
4.5   Disabling and re-enabling of UE's E-UTRA capability   PDF-p. 50
4.6   Applicability of procedures [R10]   PDF-p. 51
4.7   EPS mobility management and EPS session management in NB-S1 mode [R13]   PDF-p. 52
4.8   EPS mobility management and EPS session management in WB-S1 mode for IoT [R13]      Up

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