8.65 Node Type
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
Node Type is coded as this is depicted in Figure 8.65-1.
|
Bits |
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|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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|
1 |
Type = 135 (decimal) |
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|
2-3 |
Length = n (decimal) |
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|
4 |
Spare |
Instance |
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|
5 |
Node Type |
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|
6-(n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.65-1: Node Type
Node type values are specified in Table 8.65-1.
Table 8. 65-1: Node Type values
|
Node Types |
Values (Decimal) |
|
MME |
0 |
|
SGSN |
1 |
|
<spare> |
2-255 |
If with a Release Access Bearers Request, or Suspend Notification, or Resume an SGW receives a semantically erroneus/unexpected Originating Node, then the following applies:
– If SGW has an active connection to an MME, but the Originating Node IE contains value "SGSN", then the SGW shall not release the user plane and shall send a response to the SGSN with some appropriate cause value.
– If SGW has an active connection to an S4-SGSN, but the Originating Node IE contains value "MME", then the SGW shall not release the user plane and shall send a response to the MME with some appropriate cause value.