Content for TS 23.401 Word version: 18.4.0

1… 4… 4.2.2… 4.3… 4.3.6… 4.3.8… 4.3.12… 4.3.16… 4.3.20… 4.3.25… 4.4… 4.6… 4.7… 5… 5.1.2… 5.3… 5.3.2… 5.3.3… 5.3.3.2 5.3.3.3… 5.3.4… 5.3.4B… 5.3.5… 5.3.8… 5.3.9… 5.4… 5.4.4… 5.5… 5.5.1.2… 5.5.2… 5.5.2.2… 5.5.2.3… 5.5.2.4… 5.6… 5.7.3… 5.7A… 5.10 5.11… 5.19… D… D.3… D.3.4 D.3.5 D.3.6 D.3.7… D.3.8… E F… J… K… L… M…

5.6 Network Assisted Cell Change 5.7 Information storage 5.7.1 HSS 5.7.2 MME
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5.6 Network Assisted Cell Change p. 318

Network Assisted Cell Change (NACC) is a means that enables better performance for packet data services upon inter-cell change for those networks that do not support PS Handover. It reduces the service interruption time for UEs in active mode upon cell change by providing in the source cell, prior to the cell change, system information of a target cell allowing packet access.

Within the scope of this specification, NACC is applicable for inter-RAT cell changes from a source E-UTRAN cell towards a target GERAN cell.

When the UE changes from a source E-UTRAN cell towards a target GERAN cell, the UE locally deactivates ISR by setting its TIN from "RAT-related TMSI" to "GUTI", if any EPS bearer context activated after the ISR was activated in the UE exists.

When the UE changes from a source E-UTRAN cell in connected mode towards a target GERAN cell from the same RA via Cell Change Order that is not for CS fallback and the ISR is active, the UE locally deactivates ISR by setting its TIN from "RAT-related TMSI" to "GUTI".

5.6.1 Architecture Principles for E-UTRAN to GERAN NACC p. 318

ntroducing NACC from E-UTRAN to GERAN follows the principles of the Network Assisted Cell Change between UTRAN and GERAN as described in TS 25.413 and TS 23.060. It specifies the RAN Information Management (RIM) procedures as specified in clause 5.15 and depicted in Figure 5.6.1-1.

Reproduction of 3GPP TS 23.401, Fig. 5.6.1-1: E-UTRAN to GERAN NACC basic network architecture

Figure 5.6.1-1: E-UTRAN to GERAN NACC basic network architecture

The support for the NACC from E-UTRAN to GERAN has the following impacts on E-UTRAN / GERAN architecture:

Affected nodes: BSC, eNodeB, MME, SGSN;
Affected network interfaces: Gb, Iu, S3, Gn, S1;
Affected radio interfaces: Um and Uu.

5.6.2 Void

5.7 Information storage p. 319

This clause describes information storage structures required for the EPS when 3GPP access only is deployed. Information storage for the case where non 3GPP accesses are deployed is in TS 23.402.

5.7.1 HSS p. 320

IMSI is the prime key to the data stored in the HSS. The data held in the HSS is defined in Table 5.7.1-1 here below.

The Table below is applicable to E-UTRAN in stand-alone operation only.

Table 5.7.1-1: HSS data

Field	Description
IMSI	IMSI is the main reference key.
MSISDN	The basic MSISDN of the UE (Presence of MSISDN is optional).
IMEI / IMEISV	International Mobile Equipment Identity - Software Version Number
External Identifier List	External Identifier(s) used in the external network(s) to refer to the subscription. See TS 23.682 for more information.
MME Identity	The Identity of the MME currently serving this UE.
MME Capabilities	Indicates the capabilities of the MME with respect to core functionality e.g. regional access restrictions.
MS PS Purged from EPS	Indicates that the EMM and ESM contexts of the UE are deleted from the MME.
ODB parameters	Indicates that the status of the operator determined barring
Access Restriction	Indicates the access restriction subscription information. It may include different values for HPLMN and roaming case. It includes separate settings for WB-E-UTRAN and NB-IoT. It includes restriction information on the use of NR as a secondary RAT for user plane connectivity, the use of Unlicensed Spectrum (in the form of LAA, or LWA/LWIP, or NR-U).
EPS Subscribed Charging Characteristics	The charging characteristics for the UE, e.g. normal, prepaid, flat-rate, and/or hot billing subscription.
Trace Reference	Identifies a record or a collection of records for a particular trace.
Trace Type	Indicates the type of trace, e.g. HSS trace, and/or MME/ Serving-GW / PDN-GW trace.
OMC Identity	Identifies the OMC that shall receive the trace record(s).
Subscribed-UE-AMBR	The Maximum Aggregated uplink and downlink MBRs to be shared across all Non-GBR bearers according to the subscription of the user.
APN-OI Replacement	Indicates the domain name to replace the APN-OI when constructing the PDN-GW FQDN upon which to perform a DNS resolution. This replacement applies for all the APNs in the subscriber's profile. See clause 9.1.2 of TS 23.003 for more information on the format of domain names that are allowed in this field.
RFSP Index	An index to specific RRM configuration in the E-UTRAN
Additional RRM Policy Index	An index to additional RRM configuration in the E-UTRAN
URRP-MME	UE Reachability Request Parameter indicating that UE activity notification from MME has been requested by the HSS.
CSG Subscription Data	The CSG Subscription Data is a list of CSG IDs per PLMN and for each CSG ID optionally an associated expiration date which indicates the point in time when the subscription to the CSG ID expires; an absent expiration date indicates unlimited subscription. For a CSG ID that can be used to access specific PDNs via Local IP Access, the CSG ID entry includes the corresponding APN(s).
VPLMN LIPA Allowed	Specifies per PLMN whether the UE is allowed to use LIPA.
IAB-Operation Allowed	Indicates that the subscriber is allowed for IAB-operation
EPLMN list	Indicates the Equivalent PLMN list for the UE's registered PLMN.
Subscribed Periodic RAU/TAU Timer	Indicates a subscribed Periodic RAU/TAU Timer value
Extended idle mode DRX cycle length	Indicates a subscribed extended idle mode DRX cycle length value.
RAT specific Subscribed Paging Time Window	Indicates a Subscribed Paging Time Window value for the associated RAT, NB-IoT, WB-E-UTRAN or both.
MPS CS priority	Indicates that the UE is subscribed to the eMLPP or 1x RTT priority service in the CS domain.
UE-SRVCC- Capability	Indicates whether the UE is UTRAN/GERAN SRVCC capable or not.
MPS EPS priority	Indicates that the UE is subscribed to MPS in the EPS domain.
UE Usage Type	Indicates the usage characteristics of the UE for use with Dedicated Core Networks (see clause 4.3.25).
Group ID-list	List of the subscribed group(s) that the UE belongs to
Communication Patterns	Indicates per UE the Communication Patterns and their corresponding validity times as specified in TS 23.682.The Communication Patterns are not provided to the SGSN.
Monitoring Event Information Data	Describes the monitoring event configuration information. See TS 23.682 for more information.
PDN Connection Restriction	Indicates whether the establishment of the PDN connection is restricted for the UE.
Enhanced Coverage Restricted	Specify PLMN(s) with Enhanced Coverage restrictions.
Acknowledgements of downlink NAS data PDUs	Indicates whether acknowledgement of downlink NAS data PDUs for Control Plane CIoT EPS Optimisation is disabled for this UE (enabled by default).
Service Gap Time	Used to set the Service Gap timer for Service Gap Control (see clause 4.3.17.9).
Each subscription profile contains one or more PDN subscription contexts:
Context Identifier	Index of the PDN subscription context (Note 8).
PDN Address	Indicates subscribed IP address(es).
PDN Type	Indicates the subscribed PDN Type (IPv4, IPv6, IPv4v6, Non-IP, Ethernet)
APN-OI Replacement	APN level APN-OI Replacement which has same role as UE level APN-OI Replacement but with higher priority than UE level APN-OI Replacement. This is an optional parameter. When available, it shall be used to construct the PDN-GW FQDN instead of UE level APN-OI Replacement.
Access Point Name (APN)	A label according to DNS naming conventions describing the access point to the packet data network (or a wildcard) (NOTE 6).
Invoke SCEF Selection	Indicates whether this APN is used for establishing PDN connection to the SCEF
SCEF ID	Indicates the FQDN or IP address of the SCEF which is to be selected for this APN. It is required if "Invoke SCEF Selection" indicator is set.
SIPTO permissions	Indicates whether the traffic associated with this APN is prohibited for SIPTO, allowed for SIPTO excluding SIPTO at the local network, allowed for SIPTO including SIPTO at the local network or allowed for SIPTO at the local network only (NOTE 7).
LIPA permissions	Indicates whether the PDN can be accessed via Local IP Access. Possible values are: LIPA-prohibited, LIPA-only and LIPA-conditional.
WLAN offloadability	Indicates whether the traffic associated with this APN is allowed to be offloaded to WLAN using the WLAN/3GPP Radio Interworking feature or if it shall be kept on 3GPP access (see clause 4.3.23). The indication may contain separate values per RAT (E-UTRA and UTRA).
EPS subscribed QoS profile	The bearer level QoS parameter values for that APN's default bearer (QCI and ARP) (see clause 4.7.3).
Subscribed-APN-AMBR	The maximum aggregated uplink and downlink MBRs to be shared across all Non-GBR bearers, which are established for this APN.
EPS PDN Subscribed Charging Characteristics	The charging characteristics of this PDN Subscribed context for the UE, e.g. normal, prepaid, flat-rate, and/or hot billing subscription. The charging characteristics is associated with this APN.
VPLMN Address Allowed	Specifies per VPLMN whether for this APN the UE is allowed to use the PDN-GW in the domain of the HPLMN only, or additionally the PDN-GW in the domain of the VPLMN.
PDN-GW identity	The identity of the PDN-GW used for this APN. The PDN-GW identity may be either an FQDN or an IP address. The PDN-GW identity refers to a specific PDN-GW.
PDN-GW Allocation Type	Indicates whether the PDN-GW is statically allocated or dynamically selected by other nodes. A statically allocated PDN-GW is not changed during PDN-GW selection.
PDN continuity at inter RAT mobility	Provides for this APN how to handle a PDN connection when UE the moves between "broadband" (WB-E-UTRAN and UTRAN) and "narrowband" (NB-IoT, GPRS, EC-GSM-IoT). Possible values are: maintain the PDN connection; disconnect the PDN connection with a reactivation request; disconnect PDN connection without reactivation request; or to leave it to local VPLMN policy.
PLMN of PDN-GW	Identifies the PLMN in which the dynamically selected PDN-GW is located.
Homogenous Support of IMS Voice over PS Sessions for MME	Indicates per UE and MME if "IMS Voice over PS Sessions" is homogeneously supported in all TAs in the serving MME or homogeneously not supported, or, support is non-homogeneous/unknown, see clause 4.3.5.8A.
List of APN - PDN-GW ID relations (for PDN subscription context with wildcard APN):
APN - P-GW relation #n	The APN and the identity of the dynamically allocated PDN-GW of a PDN connection that is authorised by the PDN subscription context with the wildcard APN. The PDN-GW identity may be either an FQDN or an IP address. The PDN-GW identity refers to a specific PDN-GW.

An expired CSG subscription should not be removed from the HSS subscription data before it is removed from the UE's Allowed CSG list or Operator CSG list. When a CSG subscription is cancelled it should be handled as an expired subscription in HSS subscription data to allow for removing it from UE's Allowed CSG list or Operator CSG list first.

One (and only one) of the PDN subscription contexts stored in the HSS may contain a wild card APN (see TS 23.003) in the Access Point Name field.

The PDN subscription context marked as the default one shall not contain a wild card APN.

The PDN subscription context with a wildcard APN shall not contain a statically allocated PDN-GW.

If the LIPA permission and SIPTO permission flags are both included for a particular APN, they shall be set in a consistent manner, e.g. if the LIPA permission is set to LIPA-only or LIPA-conditional, the SIPTO permission shall be set to SIPTO-prohibited. Conversely, if the SIPTO permission indicates the APN is a SIPTO-allowed APN, the LIPA permission shall be set to LIPA-prohibited. A SIPTO-allowed APN is an APN for which the SIPTO permission is set to allowed for SIPTO excluding SIPTO at the local network, allowed for SIPTO including SIPTO at the local network or allowed for SIPTO at the local network only.

5.7.2 MME p. 324

The MME maintains MM context and EPS bearer context information for UEs in the ECM-IDLE, ECM-CONNECTED and EMM-DEREGISTERED states. Table 5.7.2-1 shows the context fields for one UE.

Table 5.7.2-1: MME MM and EPS bearer Contexts

Field	Description
IMSI	IMSI (International Mobile Subscriber Identity) is the subscriber's permanent identity.
IMSI-unauthenticated-indicator	This is an IMSI indicator to show the IMSI is unauthenticated.
Alternative IMSI	The Alternative IMSI is derived from the Accepted IMSI Offset used for Paging Timing Collision Control.
RLOS-indicator	This is indication to show that the UE is RLOS attached.
MSISDN	The basic MSISDN of the UE. The presence is dictated by its storage in the HSS.
MM State	Mobility management state ECM-IDLE, ECM-CONNECTED, EMM-DEREGISTERED.
GUTI	Globally Unique Temporary Identity.
ME Identity	Mobile Equipment Identity - (e.g. IMEI/IMEISV) Software Version Number
Tracking Area List	Current Tracking area list
TAI of last TAU	TAI of the TA in which the last Tracking Area Update was initiated.
E-UTRAN Cell Global Identity	Last known E-UTRAN cell
E-UTRAN Cell Identity Age	Time elapsed since the last E-UTRAN Cell Global Identity was acquired
PS Cell Global Identity	Last known Primary Cell of Secondary Cell Group
PS Cell Age	Time elapsed since the last Primary Cell of Secondary Cell Group Identity was acquired
CSG ID	Last known CSG ID when the UE was active
CSG membership	Last known CSG membership of the UE when the UE was active
Access mode	Access mode of last known ECGI when the UE was active
Authentication Vector	Temporary authentication and key agreement data that enables an MME to engage in AKA with a particular user. An EPS Authentication Vector consists of four elements: network challenge RAND, an expected response XRES, Key KASME, a network authentication token AUTN.
UE Radio Access Capability	UE radio access capabilities including WB-E-UTRAN capabilities but not NB-IoT capabilities.
UE Radio Capability ID	If RACS is supported, uniquely identifies a set of UE radio access capabilities
LTE-M Indication	Indicates the UE is a LTE-M UE and the UE Radio Access Capability includes LTE Cat- M1 or LTE Cat-M1 and LTE Cat-M2. This is based on indication from the E-UTRAN provides.
NB-IoT specific UE Radio Access Capability	NB-IoT specific UE radio access capabilities.
MS Classmark 2	GERAN/UTRAN CS domain core network classmark (used if the MS supports SRVCC to GERAN or UTRAN)
MS Classmark 3	GERAN CS domain radio network classmark (used if the MS supports SRVCC to GERAN)
Supported Codecs	List of codecs supported in the CS domain (used if the MS supports SRVCC to GERAN or UTRAN
UE Network Capability	UE network capabilities including security algorithms and other capabilities.
MS Network Capability	For a GERAN and/or UTRAN capable UE, this contains information needed by the SGSN.
UE Specific DRX Parameters	UE specific DRX parameters for A/Gb mode, Iu mode and WB-E-UTRAN S1-mode.
UE Specific DRX Parameter for NB-IoT	UE Specific DRX Parameter for NB-IoT S1-mode.
Active Time value for PSM	UE specific Active Time value allocated by MME for power saving mode handling.
Extended idle mode DRX parameters	Negotiated extended idle mode DRX parameters for S1-mode.
RAT specific Subscribed Paging Time Window	Indicates a Subscribed Paging Time Window value for the associated RAT, NB-IoT, WB-E-UTRAN or both.
Selected NAS Algorithm	Selected NAS security algorithm
eKSI	Key Set Identifier for the main key KASME. Also indicates whether the UE is using security keys derived from UTRAN or E-UTRAN security association.
KASME	Main key for E-UTRAN key hierarchy based on CK, IK and Serving network identity
NAS Keys and COUNT	KNASint, KNASenc, and NAS COUNT parameter.
Selected CN operator id	Selected core network operator identity (to support network sharing as defined in TS 23.251).
Recovery	Indicates if the HSS is performing database recovery.
Access Restriction	The access restriction subscription information. For this purpose, WB-E-UTRAN and NB-IoT are separate RATs. In addition, it includes restriction information on the use of NR as secondary RAT for user plane connectivity, the use of Unlicensed Spectrum (in the form of LAA, or LWA/LWIP, or NR-U).
Communication Patterns	Indicates per UE the Communication Patterns and their corresponding validity times as specified in TS 23.682. The Communication Patterns are not provided to the SGSN.
ODB for PS parameters	Indicates that the status of the operator determined barring for packet oriented services.
APN-OI Replacement	Indicates the domain name to replace the APN-OI when constructing the PDN-GW FQDN upon which to perform a DNS resolution. This replacement applies for all the APNs in the subscriber's profile. See clause 9.1.2 of TS 23.003 for more information on the format of domain names that are allowed in this field.
MME IP address for S11	MME IP address for the S11 interface (used by S-GW)
MME TEID for S11	MME Tunnel Endpoint Identifier for S11 interface.
S-GW IP address for S11/S4	S-GW IP address for the S11 and S4 interfaces
S-GW TEID for S11/S4	S-GW Tunnel Endpoint Identifier for the S11 and S4 interfaces.
SGSN IP address for S3	SGSN IP address for the S3 interface (used if ISR is activated for the GERAN and /or UTRAN capable UE)
SGSN TEID for S3	SGSN Tunnel Endpoint Identifier for S3 interface (used if ISR is activated for the E-UTRAN capable UE)
eNodeB Address in Use for S1-MME	The IP address of the eNodeB currently used for S1-MME.
eNodeB UE S1AP ID	Unique identity of the UE within eNodeB.
MME UE S1AP ID	Unique identity of the UE within MME.
Subscribed UE-AMBR	The Maximum Aggregated uplink and downlink MBR values to be shared across all Non-GBR bearers according to the subscription of the user.
UE-AMBR	The currently used Maximum Aggregated uplink and downlink MBR values to be shared across all Non-GBR bearers.
EPS Subscribed Charging Characteristics	The charging characteristics for the UE e.g. normal, prepaid, flat rate and/or hot billing.
Subscribed RFSP Index	An index to specific RRM configuration in the E-UTRAN that is received from the HSS.
Subscribed Additional RRM Policy Index	An index to additional RRM configuration in the E-UTRAN that is received from the HSS
RFSP Index in Use	An index to specific RRM configuration in the E-UTRAN that is currently in use.
Additional RRM Policy Index in Use	An index to additional RRM configuration in the E-UTRAN that is currently in use
Trace reference	Identifies a record or a collection of records for a particular trace.
Trace type	Indicates the type of trace
Trigger id	Identifies the entity that initiated the trace
OMC identity	Identifies the OMC that shall receive the trace record(s).
URRP-MME	URRP-MME indicating that the HSS has requested the MME to notify the HSS regarding UE reachability at the MME
DL Data Buffer Expiration Time	When extended buffering of DL data has been invoked for UEs that uses power saving functions e.g. PSM, this time is when the buffer will expire in the Serving-GW.
Suggested number of buffered downlink packets	Suggested number of buffered downlink packets at extended buffering. This is an optional parameter.
CSG Subscription Data	The CSG Subscription Data is associated lists of CSG IDs for the visiting PLMN and the equivalent PLMNs to the visiting PLMN, and for each CSG ID optionally an associated expiration date which indicates the point in time when the subscription to the CSG ID expires; an absent expiration date indicates unlimited subscription. For a CSG ID that can be used to access specific PDNs via Local IP Access, the CSG ID entry includes the corresponding APN(s).
LIPA Allowed	Specifies whether the UE is allowed to use LIPA in this PLMN.
IAB-Operation Allowed	Indicates that the subscriber is allowed for IAB-operation.
Subscribed Periodic RAU/TAU Timer	Indicates a subscribed Periodic RAU/TAU Timer value.
MPS CS priority	Indicates that the UE is subscribed to the eMLPP or 1x RTT priority service in the CS domain.
MPS EPS priority	Indicates that the UE is subscribed to MPS in the EPS domain.
Voice Support Match Indicator	An indication whether the UE radio capabilities are compatible with the network configuration (e.g. whether the SRVCC and frequency support by the UE matches those that the network relies upon for voice coverage). The MME uses it as an input for setting the IMS voice over PS Session Supported Indication.
Homogenous Support of IMS Voice over PS Sessions	Indicates per UE if "IMS Voice over PS Sessions" is homogeneously supported in all TAs in the serving MME or homogeneously not supported, or, support is non-homogeneous/unknown, see clause 4.3.5.8A.
UE Radio Capability for Paging Information - WB-E-UTRAN	Information used by the eNodeB to determine the timing of paging events and/or enhance the paging towards the UE (see clause 5.11.4). The UE Radio Capability for Paging Information is defined in TS 36.413.
UE Radio Capability for Paging Information - NB-IoT	Information used by the eNodeB to determine the timing of paging events and/or enhance the paging towards the UE (see clause 5.11.4). The UE Radio Capability for Paging Information is defined in TS 36.413.
Information On Recommended Cells And eNodeBs For Paging	Information sent by the eNodeB, and used by the MME when paging the UE to help determining the eNodeBs to be paged as well as to provide the information on recommended cells to each of these eNodeBs, in order to optimise the probability of successful paging while minimizing the signalling load on the radio path.
Paging Attempt Count	Information provided by the MME and used by the eNodeB to optimise signalling load and the use of network resources to successfully page a UE.
Information for Enhanced Coverage	Information for Enhanced Coverage level and cell ID provided by the last eNodeB the UE was connected to.
CE mode B Support Indicator	Indicates whether CE mode B is supported by the UE. The MME receives this from eNodeB (see TS 36.413).
Enhanced Coverage Restricted	Specifies whether the UE is restricted to use enhanced coverage feature or not.
CE mode B Restricted	Specifies whether the UE is restricted to use CE mode B (i.e. Coverage Extension mode B) or not.
UE Usage Type	Indicates the usage characteristics of the UE for use with Dedicated Core Networks (see clause 4.3.25).
Group ID-list	List of the subscribed group(s) that the UE belongs to
Monitoring Event Information Data	Describes the monitoring event configuration information. See TS 23.682 for more information.
Delay Tolerant Connection	Indicates that the PDN connection is delay tolerant such that the PDN-GW supports holding the procedure, after receiving a reject with a cause indicating that UE is temporarily not reachable due to power saving, until the PDN-GW receives a message indicating that the UE is available for end to end signalling
PDN Connection Restriction	Indicates whether the establishment of the PDN connection is restricted for the UE.
Acknowledgements of downlink NAS data PDUs	Indicates whether acknowledgement of downlink NAS data PDUs for Control Plane CIoT EPS Optimisation is disabled for this UE (enabled by default).
Service Gap Time	Used to set the Service Gap timer for Service Gap Control (see clause 4.3.17.9).
List of APN Rate Control Statuses	Indicates for each APN, the APN Rate Control Status (see clause 4.7.7.3).
WUS Assistance Information	Assistance information for determining the WUS group (see TS 36.300).
For each active PDN connection:
APN in Use	The APN currently used. This APN shall be composed of the APN Network Identifier and the default APN Operator Identifier, as specified in clause 9.1.2 of TS 23.003. Any received value in the APN-OI Replacement field is not applied here.
APN Restriction	Denotes the restriction on the combination of types of APN for the APN associated with this EPS bearer Context.
APN Subscribed	The subscribed APN received from the HSS.
PDN Type	IPv4, IPv6, IPv4v6, Non-IP or Ethernet.
SCEF ID	The IP address of the SCEF currently being used for providing PDN connection to the SCEF.
IP Address(es)	IPv4 address and/or IPv6 prefix NOTE: The MME might not have information on the allocated IPv4 address. Alternatively, following mobility involving a pre-release 8 SGSN, this IPv4 address might not be the one allocated to the UE.
Header Compression Configuration	ROHC configuration and context(s) for IP header compression for Control Plane CIoT EPS Optimisation.
EPS PDN Charging Characteristics	The charging characteristics of this PDN connection, e.g. normal, prepaid, flat-rate and/or hot billing.
APN-OI Replacement	APN level APN-OI Replacement which has same role as UE level APN-OI Replacement but with higher priority than UE level APN-OI Replacement. This is an optional parameter. When available, it shall be used to construct the PDN-GW FQDN instead of UE level APN-OI Replacement.
SIPTO permissions	Indicates whether the traffic associated with this APN is prohibited for SIPTO, allowed for SIPTO excluding SIPTO at the local network, allowed for SIPTO including SIPTO at the local network or allowed for SIPTO at the local network only.
Local Home Network ID	If SIPTO@LN is enabled for this PDN connection it indicates the identity of the Local Home Network to which the (H)eNB belongs.
LIPA permissions	Indicates whether the PDN can be accessed via Local IP Access. Possible values are: LIPA-prohibited, LIPA-only and LIPA-conditional.
WLAN offloadability	Indicates whether the traffic associated with this PDN Connection is allowed to be offloaded to WLAN using the WLAN/3GPP Radio Interworking feature or if it shall be kept on 3GPP access (see clause 4.3.23). The indication may contain separate values per RAT (E-UTRA and UTRA).
VPLMN Address Allowed	Specifies whether the UE is allowed to use the APN in the domain of the HPLMN only, or additionally the APN in the domain of the VPLMN.
PDN-GW Address in Use (control plane)	The IP address of the PDN-GW currently used for sending control plane signalling.
PDN-GW TEID for S5/S8 (control plane)	PDN-GW Tunnel Endpoint Identifier for the S5/S8 interface for the control plane. (For GTP-based S5/S8 only).
MS Info Change Reporting Action	Need to communicate change in User Location Information to the PDN-GW with this EPS bearer Context.
CSG Information Reporting Action	Need to communicate change in User CSG Information to the PDN-GW with this EPS bearer Context. This field denotes separately whether the MME/SGSN are requested to send changes in User CSG Information for (a) CSG cells, (b) hybrid cells in which the subscriber is a CSG member and (c) hybrid cells in which the subscriber is not a CSG member.
Presence Reporting Area Action	Need to communicate a change of UE presence in Presence Reporting Area. This field denotes separately the PRA identifier(s), and the list(s) of the Presence Reporting Area elements (if provided by the PDN-GW). The status (i.e. active or inactive) for each Presence Reporting Area is stored in the MME when dynamic resource handling for Presence Reporting Area is configured in the MME.
EPS subscribed QoS profile	The bearer level QoS parameter values for that APN's default bearer (QCI and ARP) (see clause 4.7.3).
Subscribed APN-AMBR	The Maximum Aggregated uplink and downlink MBR values to be shared across all Non-GBR bearers, which are established for this APN, according to the subscription of the user.
APN-AMBR	The Maximum Aggregated uplink and downlink MBR values to be shared across all Non-GBR bearers, which are established for this APN, as decided by the PDN-GW.
PDN-GW GRE Key for uplink traffic (user plane)	PDN-GW assigned GRE Key for the S5/S8 interface for the user plane for uplink traffic. (For PMIP-based S5/S8 only)
Default bearer	Identifies the EPS Bearer Id of the default bearer within the given PDN connection.
low access priority	Indicates that the UE requested low access priority when the PDN connection was opened. NOTE: The low access priority indicator is only stored for the purpose to be included in charging records.
PDN continuity at inter RAT mobility	Provides for this APN how to handle a PDN connection when UE the moves between "broadband" (WB-E-UTRAN and UTRAN) and "narrowband" (NB-IoT, GPRS, EC-GSM-IoT). Possible values are: maintain the PDN connection; disconnect the PDN connection with a reactivation request; disconnect PDN connection without reactivation request; or to leave it to local VPLMN policy.
For each bearer within the PDN connection:
EPS Bearer ID	An EPS bearer identity uniquely identifies an EP S bearer for one UE accessing via E-UTRAN
TI	Transaction Identifier
S-GW IP address for S1-u/S11-u	IP address of the S-GW for the S1-u interface. Also IP address of the S-GW for the S11-u interface if no separation of S1-U and S11-U is required. The S11-u interface is used for Control Plane CIoT EPS Optimisation.
S-GW IP address for S11-u	IP address of the S-GW for the S11-u interfaces if S11-u is separated from S1-u. The S11-u interface is used for Control Plane CIoT EPS Optimisation.
S-GW TEID for S1-u/S11-u	Tunnel Endpoint Identifier of the S-GW for the S1-u interface. Also Tunnel Endpoint Identifier of the S-GW for the S11-u interface if no separation of S1-U and S11-U is required. The S11-u interface is used for Control Plane CIoT EPS Optimisation.
S-GW TEID for S11-u	Tunnel Endpoint Identifier of the S-GW for the S11-u interface if S11-u is separated from S1-u. The S11-u interface is used for Control Plane CIoT EPS Optimisation.
MME IP address for S11-u	MME IP address for the S11-u interface (Used by the S-GW). The S11-u interface is used for Control Plane CIoT EPS Optimisation.
MME TEID for S11-u	MME Tunnel Endpoint Identifier for the S11-u interface (Used by the S-GW). The S11-u interface is used for Control Plane CIoT EPS Optimisation.
PDN-GW TEID for S5/S8 (user plane)	P-GW Tunnel Endpoint Identifier for the S5/S8 interface for the user plane. (Used for S-GW change only). NOTE: The PDN-GW TEID is needed in MME context as S-GW relocation is triggered without interaction with the source S-GW, e.g. when a TAU occurs. The Target S-GW requires this Information Element, so it must be stored by the MME.
PDN-GW IP address for S5/S8 (user plane)	P-GW IP address for user plane for the S5/S8 interface for the user plane. (Used for S-GW change only). NOTE: The PDN-GW IP address for user plane is needed in MME context as S-GW relocation is triggered without interaction with the source S-GW, e.g. when a TAU occurs. The Target S-GW requires this Information Element, so it must be stored by the MME.
EPS bearer QoS	QCI and ARP optionally: GBR and MBR for GBR bearer
TFT	Traffic Flow Template. (For PMIP-based S5/S8 only)
Serving PLMN-Rate-Control	The Serving PLMN-Rate-Control limits the maximum number of NAS Data PDUs per deci hour sent per direction (uplink/downlink) using the Control Plane CIoT EPS Optimisation for a PDN connection.

The MME Emergency Configuration Data is used instead of UE subscription data received from the HSS, for all emergency bearer services that are established by an MME on UE request.

Table 5.7.2-2: MME Emergency Configuration Data

Field	Description
Emergency Access Point Name (em APN)	A label according to DNS naming conventions describing the access point used for Emergency PDN connection (wild card not allowed).
Emergency QoS profile	The bearer level QoS parameter values for Emergency APN's default bearer (QCI and ARP). The ARP is an ARP value reserved for emergency bearers.
Emergency APN-AMBR	The Maximum Aggregated uplink and downlink MBR values to be shared across all Non-GBR bearers, which are established for the Emergency APN, as decided by the PDN-GW.
Emergency PDN-GW identity	The statically configured identity of the PDN-GW used for emergency APN. The PDN-GW identity may be either an FQDN or an IP address.
Non-3GPP HO Emergency PDN-GW identity	The statically configured identity of the PDN-GW used for emergency APN when a PLMN supports handover to non-3GPP access. The PDN-GW identity may be either an FQDN or an IP address.(NOTE 1)
NOTE: The FQDN always resolves to one PDN-GW.

The MME RLOS Configuration Data is used, for all RLOS PDN connection that are established by an MME on UE request instead of UE subscription data received from HSS.

Table 5.7.2-3: MME RLOS Configuration Data

Field	Description
Restricted Local Operator Services Access Point Name (RLOS APN)	A label according to DNS naming conventions describing the access point used for RLOS PDN connection (wild card not allowed).
RLOS QoS profile	The bearer level QoS parameter values for RLOS APN's default bearer (QCI and ARP).
RLOS APN-AMBR	The Maximum Aggregated uplink and downlink MBR values to be shared across all Non-GBR bearers, which are established for the RLOS APN, as decided by the PDN-GW.
RLOS PDN-GW identity	The statically configured identity of the PDN-GW used for RLOS APN. The PDN-GW identity may be either an FQDN or an IP address.
NOTE: The FQDN always resolves to one PDN-GW.