8.78 CSG ID
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
CSG ID is coded as depicted in Figure 8.78-1. The CSG ID is defined in 3GPP TS 23.003 [2].
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 |
Type = 147 |
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2 to 3 |
Length = n |
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4 |
Spare |
Instance |
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5 |
Spare |
CSG ID |
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6 to 8 |
CSG ID |
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9 to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.78-1: CSG ID
The CSG ID consists of 4 octets. Bit 3 of Octet 5 is the most significant bit and bit 1 of Octet 8 is the least significant bit. The coding of the CSG ID is the responsibility of the operator that allocates the CSG ID by administrative means. Coding using full hexadecimal representation (binary, not ASCII encoding) shall be used.