8.18 Serving Network
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
Serving Network is coded as depicted in Figure 8.18-1.
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 |
Type = 83 (decimal) |
|||||||||
|
2 to 3 |
Length = n |
|||||||||
|
4 |
Spare |
Instance |
||||||||
|
5 |
MCC digit 2 |
MCC digit 1 |
||||||||
|
6 |
MNC digit 3 |
MCC digit 3 |
||||||||
|
7 |
MNC digit 2 |
MNC digit 1 |
||||||||
|
8 to (n+4) |
These octet(s) is/are present only if explicitly specified |
|||||||||
Figure 8.18-1: Serving Network
If an Administration decides to include only two digits in the MNC, then bits 5 to 8 of octet 6 are coded as "1111".
Unless specified otherwise in the specification, this IE contains the serving core network operator ID provided by the MME, S4-SGSN or ePDG, or the PLMN identity of the selected PLMN used for 3GPP-based access authentication provided by the TWAN.
NOTE: The serving core network operator ID is the PLMN ID of the MME, S4-SGSN or ePDG which is currently serving the UE. An S4-SGSN/MME which supports multiple PLMN IDs is considered as logically different S4-SGSNs/MMEs.