LAI

>PLMN Identity

M

9.2.3.8

>LAC

M

OCTET STRING (SIZE(2))

0000 and FFFE not allowed.

RAC

M

OCTET STRING (SIZE(1))

MME UE S1AP ID

M

INTEGER (0 .. 2³² -1)

eNB UE S1AP ID

M

INTEGER (0 .. 2²⁴ -1)

NAS-PDU

M

OCTET STRING

MMEC

M

9.2.3.12

M-TMSI

M

OCTET STRING (SIZE (4))

M-TMSI is unique within MME that allocated it.

TAC

M

OCTET STRING (SIZE (2))

PLMN Identity

M

OCTET STRING (SIZE (3))

– digits 0 to 9, encoded 0000 to 1001,

– 1111 used as filler digit,

two digits per octet,

– bits 4 to 1 of octet n encoding digit 2n-1

– bits 8 to 5 of octet n encoding digit 2n

-The PLMN identity consists of 3 digits from MCC followed by either
-a filler digit plus 2 digits from MNC (in case of 2 digit MNC) or
-3 digits from MNC (in case of a 3 digit MNC).

GUMMEI

>PLMN Identity

M

9.2.3.8

>MME Group ID

M

OCTET STRING (SIZE(2))

>MME code

M

9.2.3.12

UE Identity Index Value

M

BIT STRING (SIZE(10))

Coded as specified in TS 36.304 [20].

IMSI

M

OCTET STRING (SIZE (3..8))

– digits 0 to 9, encoded 0000 to 1001,

– 1111 used as filler digit,

two digits per octet,

– bit 4 to 1 of octet n encoding digit 2n-1

– bit 8 to 5 of octet n encoding digit 2n

-Number of decimal digits shall be from 6 to 15 starting with the digits from the PLMN identity.

When the IMSI is made of an odd number of digits, the filler digit shall be added at the end to make an even number of digits of length 2N. The filler digit shall then be consequently encoded as bit 8 to 5 of octet N.

MMEC

M

OCTET STRING (SIZE (1))

CHOICE UE Paging Identity

M

>S-TMSI

>>S-TMSI

M

9.2.3.6

>IMSI

>>IMSI

M

9.2.3.11

DL Forwarding

>DL Forwarding

M

ENUMERATED (DL forwarding proposed, …)

Direct Forwarding Path Availability

M

ENUMERATED (Direct Path Available, …)

TAI

>PLMN Identity

M

9.2.3.8

>TAC

M

9.2.3.7

Relative MME Capacity

M

INTEGER (0..255)

MME UE S1AP ID

M

9.2.3.3

–

–

eNB UE S1AP ID

M

9.2.3.4

–

–

CHOICE Overload Response

M

>Overload Action

>>Overload Action

M

9.2.3.20

Overload Action

M

ENUMERATED

(Reject RRC connection establishments for non-emergency MO DT, Reject RRC connection establishments for Signalling, Permit Emergency Sessions and mobile terminated services only, …, Permit High Priority Sessions and mobile terminated services only, Reject delay tolerant access, Permit high priority sessions and exception reporting and mobile terminated services only, not accept mo-data or delay tolerant access from CP CIoT)

CS Fallback Indicator

M

ENUMERATED(CS Fallback required, … ,

CS Fallback High Priority)

CN Domain

M

ENUMERATED(PS, CS)

RIM Transfer

>RIM Information

M

9.2.3.24

>RIM Routing Address

O

9.2.3.25

RIM Information

>RIM Information

M

OCTET STRING

Contains the BSSGP RIM PDU as defined in TS 48.018 [18].

CHOICE RIM Routing Address

M

>GERAN-Cell-ID

–

>>LAI

M

9.2.3.1

–

>>RAC

M

9.2.3.2

–

>>CI

M

OCTET STRING (SIZE(2))

–

>Target RNC-ID

–

>>LAI

M

9.2.3.1

–

>>RAC

O

9.2.3.2

–

>>RNC-ID

M

INTEGER (0..4095)

If the Extended RNC-ID IE is included in the Target ID IE, the RNC-ID IE shall be ignored.

–

>>Extended RNC-ID

O

9.2.1.14

The Extended RNC-ID IE shall be used if the RNC identity has a value larger than 4095.

–

>eHRPD Sector ID

–

>>eHRPD Sector ID

M

OCTET STRING (SIZE(16))

Contains the eHRPD Sector ID as defined in 3GPP2 C.S0024-B [27] sub-section 13.9.

–

SON Configuration Transfer

>Target eNB-ID

M

>>Global eNB ID

M

9.2.1.37

>>Selected TAI

M

TAI

9.2.3.16

>Source eNB-ID

M

>>Global eNB ID

M

9.2.1.37

>>Selected TAI

M

TAI

9.2.3.16

>SON Information

M

9.2.3.27

>X2 TNL Configuration Info

C-ifSONInformationRequest

9.2.3.29

Source eNB X2 TNL Configuration Info.

YES

ignore

>Synchronisation Information

C-if Activate Muting

9.2.3.42

Information on cell selected as source of synchronisation and aggressor cells.

YES

ignore

ifSONInformationRequest

This IE shall be present if the SON Information IE contains the SON Information Request IE set to “X2TNL Configuration Info”

ifActivateMuting

This IE shall be present if the SON Information IE contains the SON Information Request IE set to “Activate Muting”

EN-DC SON Configuration Transfer

>CHOICE Transfer Type

M

>>Request

NOTE: Used if the SON Information IE indicates a request.

>>>Source eNB-ID

1

>>>>Global eNB ID

M

9.2.1.37

>>>>Selected TAI

M

TAI

9.2.3.16

>>>Target en-gNB-ID

1

>>>>Global en-gNB ID

M

9.2.1.37a

>>>>Selected TAI

M

TAI

9.2.3.16

The MME may ignore this IE if any of the following IEs are present in the EN-DC SON Configuration Transfer IE: Target eNB-ID, Associated TAI, Broadcast 5GS TAI.

NOTE: The Selected TAI is a 4G TAI and should, if available, correspond to the TAI configured at the en-gNB, however, this TAI is not broadcast by the respective NR cell and may not always be available from UE reporting TAIs of overlapping E-UTRA cells.

>>>Target eNB-ID

0..1

>>>>Global eNB ID

M

9.2.1.37

>>>>Selected TAI

M

TAI

9.2.3.16

>>>Associated TAI

O

TAI

9.2.3.16

A 4G TAI associated with the target en-gNB as specified in TS 36.300 [15].

>>>Broadcast 5GS TAI

O

5GS TAI

9.3.2.52

A Broadcast 5GS TAI of the en-gNB as specified in TS 36.300 [15].

>>Reply

NOTE: Used if the SON Information IE indicates a reply.

>>>Source en-gNB-ID

1

>>>>Global en-gNB ID

M

9.2.1.37a

>>>>Selected TAI

M

TAI

9.2.3.16

NOTE: The Selected TAI contains a configured TAC of the en-gNB.

>>>Target eNB-ID

1

>>>>Global eNB ID

M

9.2.1.37

>>>>Selected TAI

M

TAI

9.2.3.16

>SON Information

M

9.2.3.27

>X2 TNL Configuration Info

C-ifSONInformationRequest

9.2.3.29

Source eNB X2 TNL Configuration Info.

ifSONInformationRequest

This IE shall be present if the SON Information IE contains the SON Information Request IE set to “X2 TNL Configuration Info”

CHOICE SON Information

M

>SON Information Request

>>SON Information Request

M

ENUMERATED(X2 TNL Configuration Info, …, Time synchronisation Info, Activate Muting, Deactivate Muting)

In the current version of the specification only "X2 TNL Configuration Info" is applicable for EN-DC.

–

>SON Information Reply

>>SON Information Reply

M

9.2.3.28

–

>SON Information Report

>>SON Information Report

M

9.2.3.39

YES

ignore

SON Information Reply

>X2 TNL Configuration Info

O

9.2.3.29

>Time Synchronisation Info

O

9.2.3.34

YES

ignore

>Muting Pattern Information

O

9.2.3.41

YES

ignore

eNB X2 Transport Layer Addresses

1 .. <maxnoofeNBX2TLAs>

>Transport Layer Address

M

9.2.2.1

Transport Layer Addresses for X2 SCTP end-point.

eNB X2 Extended Transport Layer Addresses

0 .. <maxnoofeNBX2ExtTLAs>

YES

ignore

>IP-Sec Transport Layer Address

O

9.2.2.1

Transport Layer Addresses for IP-Sec end-point.

–

–

>eNB GTP Transport Layer Addresses

0 .. <maxnoofeNBX2GTPTLAs>

–

–

>>GTP Transport Layer Address

M

9.2.2.1

GTP Transport Layer Addresses for GTP end-points (used for data forwarding over X2 or for transport of X2-U user data for dual connectivity).

–

–

eNB Indirect X2 Transport Layer Addresses

0 .. <maxnoofeNBX2TLAs>

YES

ignore

>Transport Layer Address

O

9.2.2.1

Transport Layer Addresses for Indirect X2 SCTP end-point.

maxnoofeNBX2TLAs

Maximum no. of eNB X2 Transport Layer Addresses for an SCTP end-point. Value is 2.

maxnoofeNBX2ExtTLAs

Maximum no. of eNB X2 Extended Transport Layer Addresses in the message. Value is 16.

maxnoofeNBX2GTPTLAs

Maximum no. of eNB X2 GTP Transport Layer Addresses for an GTP end-point in the message. Value is 16.

NAS Security Parameters from E-UTRAN

M

OCTET STRING

Coded as the value part of NAS security parameters from E-UTRA IE defined in TS 24.301 [24].

NAS Security Parameters to E-UTRAN

M

OCTET STRING

Coded as the value part of NAS security parameters to E-UTRA IE defined in TS 24.301 [24].

LPPa-PDU

M

OCTET STRING

Routing ID

M

INTEGER (0..255)

Synchronisation Info

>Stratum Level

M

INTEGER (0..3, …)

>Synchronisation status

M

ENUMERATED(Synchronous, Asynchronous, …)

>Muting Availability Indication

O

ENUMERATED (Available, Unavailable, …)

Indicates availability of muting activation.

YES

ignore

Traffic Load Reduction Indication

M

INTEGER (1..99)

Additional CS Fallback Indicator

M

ENUMERATED(no restriction, restriction, …)

Masked IMEISV

M

BIT STRING (SIZE (64))

Coded as the International Mobile station Equipment Identity and Software Version Number (IMEISV) defined in TS 23.003 [21] with the last 4 digits of the SNR masked by setting the corresponding bits to 1.

The first to fourth bits correspond to the first digit of the IMEISV, the fifth to eighth bits correspond to the second digit of the IMEISV, and so on.

CHOICE SON Information Report

M

>RLF Report Information

>>RLF Report Information

M

9.2.3.40

UE RLF Report Container

M

OCTET STRING

rlf-Report-r9 contained in UEInformationResponse message as defined in TS 36.331 [16].

UE RLF Report Container for extended bands

O

OCTET STRING

rlf-Report-v9e0 contained in the UEInformationResponse message (TS 36.331 [16])

NB-IoT RLF Report Container

O

OCTET STRING

rlf-Report-NB-r16 contained in UEInformationResponse-NB message, as defined in TS 36.331 [16].

Muting Pattern Period

M

ENUMERATED (0, 1280, 2560, 5120, 10240, …)

Period for repetition of muted subframe in milliseconds. Value ‘0’ indicates that the muting request is not fulfilled.

Muting Pattern Offset

O

INTEGER (0..10239,…)

Offset in number of subframes of the muting pattern starting from subframe 0 in a radio frame where SFN = 0.

If this IE is not present, the receiving eNB may consider the requested muting pattern offset in the former request has been accepted.

Source Stratum Level

O

INTEGER (0..3, …)

Stratum Level of cell selected as synchronisation source. The range of this IE is limited to 0..2.

Listening Subframe Pattern

O

9.2.3.43

Subframe pattern where the Reference Signals can be detected for synchronisation.

Aggressor Cell List

0..1

List of cells for which the muting pattern need to be activated.

>Aggressor E-CGI List

1..<maxnoofCellsineNB>

>>E-CGI

M

9.2.1.38

maxnoofCellsineNB

Maximum no. cells that can be served by an eNB. Value is 256.

Pattern Period

M

ENUMERATED (1280, 2560, 5120, 10240, …)

Period in milliseconds for repetition of the subframe where reference signals are available.

Pattern Offset

M

INTEGER (0..10239,…)

Offset in number of subframes of the reference signals starting from subframe 0 in a radio frame where SFN = 0.

MME Group ID

M

OCTET STRING (SIZE(2))

The MME Group ID is defined in TS 23.003 [21]

GUMMEI

M

9.2.3.9

M-TMSI

M

OCTET STRING (SIZE (4))

Extended UE Identity Index Value

M

BIT STRING (SIZE(14))

Corresponds to the UE_ID used to determine the Paging Narrowband and the NB-IoT paging carrier as specified in TS 36.304 [20].

NB-IoT UE Identity Index Value

M

BIT STRING (SIZE(12))

Coded as specified in TS 36.304 [20].

DL NAS PDU Delivery Request

M

ENUMERATED (requested, …)

DL NAS MAC

M

BIT STRING (SIZE(16))

Defined in TS 33.401 [15].

UL NAS MAC

M

BIT STRING (SIZE(16))

Defined in TS 33.401 [15].

UL NAS Count

M

BIT STRING (SIZE(5))

Defined in TS 33.401 [15].

UE Capability Info Request

M

ENUMERATED (requested, …)

TAI

>PLMN Identity

M

9.2.3.8

>5GS TAC

M

9.2.3.53

5GS TAC

M

OCTET STRING (SIZE (3))

End Indication

M

ENUMERATED (no further data, further data exists, …)

Pending Data Indication

M

ENUMERATED (true, …)

Serving PLMN

M

PLMN Identity

9.2.3.8

Indicates the UE’s serving PLMN.

TAC List in LTE NTN

1..<maxnoofTACsinNTN>

Includes all TAC(s) broadcast in the cell, for the UE’s serving PLMN.

>TAC

M

9.2.3.7

UE location derived TAC in LTE NTN

O

TAC

9.2.3.7

This IE contains TAC information derived from the actual UE location, if available.

maxnoofTACsInNTN

Maximum no. of TACs in NTN. Value is 12.