8.57 APN Restriction
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
The APN Restriction information element contains an unsigned integer value indicating the level of restriction imposed on EPS Bearer Contexts created to the associated APN.
The APN Restriction IE is coded as depicted in Figure 8.57-1:
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 |
Type = 127 (decimal) |
|||||||||
|
2 to 3 |
Length = n |
|||||||||
|
4 |
Spare |
Instance |
||||||||
|
5 |
Restriction Type value |
|||||||||
|
6 to (n+4) |
These octet(s) is/are present only if explicitly specified |
|||||||||
Figure 8.57-1: APN Restriction Type Information Element
An APN Restriction value may be configured for each APN in the PGW. It is used to determine, on a per UE basis, whether it is allowed to establish EPS bearers to other APNs.
Table 8.57-1: Valid Combinations of APN Restriction
|
Maximum APN Restriction Value |
Type of APN |
Application Example |
APN Restriction Value allowed to be established |
|---|---|---|---|
|
0 |
No Existing Contexts or Restriction |
All |
|
|
1 |
Public-1 |
MMS |
1, 2, 3 |
|
2 |
Public-2 |
Internet |
1, 2 |
|
3 |
Private-1 |
Corporate (e.g. who use MMS) |
1 |
|
4 |
Private-2 |
Corporate (e.g. who do not use MMS) |
None |