3GPP 24.501 v20.0.0 — the document's own text
9.11.3.5 5GS network feature support
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The purpose of the 5GS network feature support information element is to indicate whether certain features are supported by the network.
The 5GS network feature support information element is coded as shown in figure 9.11.3.5.1 and table 9.11.3.5.1.
The 5GS network feature support is a type 4 information element with a minimum length of 3 octets and a maximum length of 6 octets.
If:
- the length of 5GS network feature support contents field is set to one, then the UE shall interpret this as a receipt of an information element with all bits of octet 4, octet 5 and octet 6 coded as zero.
- the length of 5GS network feature support contents field is set to two, the UE shall interpret this as a receipt of an information element with all bits of octet 5 and octet 6 coded as zero.
- the length of 5GS network feature support contents field is set to three, the UE shall interpret this as a receipt of an information element with all bits of octet 6 coded as zero.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| 5GS network feature support IEI | octet 1 | |||||||
| Length of 5GS network feature support contents | octet 2 | |||||||
| MPSI | IWK N26 | EMF | EMC | IMS- VoPS-N3GPP | IMS- VoPS-3GPP | octet 3 | ||
| 5G-UP CIoT | 5G-IPHC-CP CIoT | N3 data | 5G-CP CIoT | RestrictEC | MCSI | EMCN3 | octet 4* | |
| UN-PER | PR | RPR | PIV | NCR | 5G-EHC-CP CIoT | ATS-IND | 5G-LCS | octet 5* |
| 0spare | 0spare | EF5L | MLCSUP | RSLP | SUPL | LCS-UPP | NAPS | octet 6* |
Figure 9.11.3.5.1: 5GS network feature support information element
Table 9.11.3.5.1: 5GS network feature support information element
| IMS voice over PS session over 3GPP access indicator (IMS-VoPS-3GPP) (octet 3, bit 1) | ||||
|---|---|---|---|---|
| This bit indicates the support of IMS voice over PS session over 3GPP access (see NOTE 1). | ||||
| Bit | ||||
| 1 | ||||
| 0 | IMS voice over PS session not supported over 3GPP access | |||
| 1 | IMS voice over PS session supported over 3GPP access | |||
| IMS voice over PS session over non-3GPP access indicator (IMS-VoPS-N3GPP) (octet 3, bit 2) | ||||
| This bit indicates the support of IMS voice over PS session over non-3GPP access. | ||||
| Bit | ||||
| 2 | ||||
| 0 | IMS voice over PS session not supported over non-3GPP access | |||
| 1 | IMS voice over PS session supported over non-3GPP access | |||
| Emergency service support indicator for 3GPP access (EMC) (octet 3, bit 3 and bit 4) | ||||
| These bits indicate the support of emergency services in 5GS for 3GPP access (see NOTE 1). | ||||
| Bits | ||||
| 4 | 3 | |||
| 0 | 0 | Emergency services not supported | ||
| 0 | 1 | Emergency services supported in NR connected to 5GCN only | ||
| 1 | 0 | Emergency services supported in E-UTRA connected to 5GCN only | ||
| 1 | 1 | Emergency services supported in NR connected to 5GCN and E-UTRA connected to 5GCN | ||
| Emergency services fallback indicator for 3GPP access (EMF) (octet 3, bit 5 and bit 6) | ||||
| These bits indicate the support of emergency services fallback for 3GPP access (see NOTE 1). | ||||
| Bits | ||||
| 6 | 5 | |||
| 0 | 0 | Emergency services fallback not supported | ||
| 0 | 1 | Emergency services fallback supported in NR connected to 5GCN only | ||
| 1 | 0 | Emergency services fallback supported in E-UTRA connected to 5GCN only | ||
| 1 | 1 | Emergency services fallback supported in NR connected to 5GCN and E-UTRA connected to 5GCN | ||
| Interworking without N26 interface indicator (IWK N26) (octet 3, bit 7) | ||||
| This bit indicates whether interworking without N26 interface is supported. | ||||
| Bit | ||||
| 7 | ||||
| 0 | Interworking without N26 interface not supported | |||
| 1 | Interworking without N26 interface supported | |||
| MPS indicator (MPSI) (octet 3, bit 8) | ||||
| This bit indicates the validity of MPS. | ||||
| Bit | ||||
| 8 | ||||
| 0 | Access identity 1 not valid | |||
| 1 | Access identity 1 valid | |||
| Emergency service support for non-3GPP access indicator (EMCN3) (octet 4, bit 1) | ||||
| This bit indicates the support of emergency services in 5GS for non-3GPP access. | ||||
| Bit (see NOTE 2) | ||||
| 1 | ||||
| 0 | Emergency services not supported over non-3GPP access | |||
| 1 | Emergency services supported over non-3GPP access | |||
| MCS indicator (MCSI) (octet 4, bit 2) | ||||
| This bit indicates the validity of MCS. | ||||
| Bit | ||||
| 2 | ||||
| 0 | Access identity 2 not valid | |||
| 1 | Access identity 2 valid | |||
| Restriction on enhanced coverage (RestrictEC) (octet 4, bit 3 and bit 4)These bits indicate enhanced coverage restricted information. | ||||
| In WB-N1 mode these bits are set as follows:Bits | ||||
| 4 | 3 | |||
| 0 | 0 | Both CE mode A and CE mode B are not restricted | ||
| 0 | 1 | Both CE mode A and CE mode B are restricted | ||
| 1 | 0 | CE mode B is restricted | ||
| 1 | 1 | Reserved | ||
| In NB-N1 mode these bits are set as follows | ||||
| Bits | ||||
| 4 | 3 | |||
| 0 | 0 | Use of enhanced coverage is not restricted | ||
| 0 | 1 | Use of enhanced coverage is restricted | ||
| 1 | 0 | Reserved | ||
| 1 | 1 | Reserved | ||
| Control plane CIoT 5GS optimization (5G-CP CIoT) (octet 4, bit 5) | ||||
| This bit indicates the capability for control plane CIoT 5GS optimization. | ||||
| Bit | ||||
| 5 | ||||
| 0 | Control plane CIoT 5GS optimization not supported | |||
| 1 | Control plane CIoT 5GS optimization supported | |||
| N3 data transfer (N3 data) (octet 4, bit 6) | ||||
| This bit indicates the capability for N3 data transfer. | ||||
| Bit | ||||
| 6 | ||||
| 0 | N3 data transfer supported | |||
| 1 | N3 data transfer not supported | |||
| IP header compression for control plane CIoT 5GS optimization (5G-IPHC-CP CIoT) (octet 4, bit 7) | ||||
| This bit indicates the capability for IP header compression for control plane CIoT 5GS optimization. | ||||
| Bit | ||||
| 7 | ||||
| 0 | IP header compression for control plane CIoT 5GS optimization not supported | |||
| 1 | IP header compression for control plane CIoT 5GS optimization supported | |||
| User plane CIoT 5GS optimization (5G-UP CIoT) (octet 4, bit 8) | ||||
| This bit indicates the capability for user plane CIoT 5GS optimization. | ||||
| Bit | ||||
| 8 | ||||
| 0 | User plane CIoT 5GS optimization not supported | |||
| 1 | User plane CIoT 5GS optimization supported | |||
| Location Services indicator in 5GC (5G-LCS) (octet 5, bit 1) | ||||
| Bit | ||||
| 1 | ||||
| 0 | Location services via 5GC not supported | |||
| 1 | Location services via 5GC supported | |||
| ATSSS support indicator (ATS-IND) (octet 5, bit 2) | ||||
| This bit indicates the network support for ATSSS. | ||||
| Bit | ||||
| 2 | ||||
| 0 | ATSSS not supported | |||
| 1 | ATSSS supported | |||
| Ethernet header compression for control plane CIoT 5GS optimization (5G-EHC-CP CIoT) (octet 5, bit 3) | ||||
| This bit indicates the capability for Ethernet header compression for control plane CIoT 5GS optimization | ||||
| Bit | ||||
| 3 | ||||
| 0 | Ethernet header compression for control plane CIoT 5GS optimization not supported | |||
| 1 | Ethernet header compression for control plane CIoT 5GS optimization supported | |||
| N1 NAS signalling connection release (NCR) (octet 5, bit 4) | ||||
| This bit indicates whether N1 NAS signalling connection release is supported. | ||||
| Bit | ||||
| 4 | ||||
| 0 | N1-NAS signalling connection release not supported | |||
| 1 | N1-NAS signalling connection release supported | |||
| Paging indication for voice services (PIV) (octet 5, bit 5) | ||||
| This bit indicates whether paging indication for voice services is supported. | ||||
| Bit | ||||
| 5 | ||||
| 0 | paging indication for voice services not supported | |||
| 1 | paging indication for voice services supported | |||
| Reject paging request (RPR) (octet 5, bit 6) | ||||
| This bit indicates whether reject paging request is supported. | ||||
| Bit | ||||
| 6 | ||||
| 0 | reject paging request not supported | |||
| 1 | reject paging request supported | |||
| Paging restriction (PR) (octet 5, bit 7) | ||||
| This bit indicates whether paging restriction is supported. | ||||
| Bit | ||||
| 7 | ||||
| 0 | paging restriction not supported | |||
| 1 | paging restriction supported | |||
| UN-PER (octet 5, bit 8) | ||||
| This bit indicates the capability to support Unavailability period | ||||
| Bit | ||||
| 8 | ||||
| 0unavailability period not supported1unavailability period supported | ||||
| Non-3GPP access path switching (NAPS) (octet 6, bit 1) | ||||
| This bit indicates whether non-3GPP access path switching is supported. | ||||
| Bit | ||||
| 1 | ||||
| 0 | non-3GPP access path switching not supported | |||
| 1 | non-3GPP access path switching supported | |||
| LCS-UPP user plane positioning (LCS-UPP) (octet 6, bit 2) | ||||
| This bit indicates the capability to support LCS-UPP user plane positioning (see 3GPP TS 23.273 [6B]). | ||||
| Bit | ||||
| 2 | ||||
| 0 | User plane positioning using LCS-UPP not supported | |||
| 1 | User plane positioning using LCS-UPP supported | |||
| SUPL user plane positioning (SUPL) (octet 6, bit 3) | ||||
| This bit indicates the capability to support SUPL user plane positioning (see 3GPP TS 38.305 [67] and 3GPP TS 23.271 [68]). | ||||
| Bit | ||||
| 3 | ||||
| 0 | User plane positioning using SUPL not supported | |||
| 1 | User plane positioning using SUPL supported | |||
| Ranging and sidelink positioning support (RSLP) (octet 6, bit 4) | ||||
| This bit indicates the capability to support ranging and sidelink positioning. | ||||
| Bit | ||||
| 4 | ||||
| 0 | Ranging and sidelink positioning not supported | |||
| 1 | Ranging and sidelink positioning supported | |||
| Multiple LCS secured user plane connections (MLCSUP) (octet 6, bit 5) | ||||
| This bit indicates the capability to support multiple LCS secured user plane connections. | ||||
| Bit | ||||
| 5 | ||||
| 0 | Multiple LCS secured user plane connections not supported | |||
| 1 | Multiple LCS secured user plane connections supported | |||
| ExtendedFacility IE for 5G LCS (EF5L) (octet 6, bit 6) | ||||
| This bit indicates the capability to support ExtendedFacility IE for 5G LCS. | ||||
| Bit | ||||
| 6 | ||||
| 0 | ExtendedFacility IE for 5G LCS not supported | |||
| 1 | ExtendedFacility IE for 5G LCS supported | |||
| Bits 7 to 8 of octet 6 are spare and shall be coded as zero. | ||||
| NOTE 1: For a registration procedure over non-3GPP access, bit 1 of octet 3 and bits 3 to 7 of octet 3 are ignored.NOTE 2: For a registration procedure over 3GPP access, bit 2 of octet 3 and bit 1 of octet 4 are ignored. |