F.2 3G Cell Identity coding – RNC-Id + C-Id
3GPP44.318Generic Access Network (GAN)Mobile GAN interface layer 3 specificationRelease 17TS
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8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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RNC-Id. |
octet n |
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RNC-Id cont. |
C-Id |
Octet n+1 |
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C-Id cont. |
octet n+2 |
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C-Id cont. |
Spare |
octet n+3 |
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Figure F1.2.1: 3G Cell Identity information element
3GPP TS 25.401 indicates that the 28 bit 3G Cell Identity consist of a RNC-Id. (12 bit) and a C-Id (16 bit).
Bit 8 in octet n is the most significant bit and bit 5 in octet n+1 is the least significant bit of the RNC-Id.
Bit 4 in octet n +1is the most significant bit and bit 5 in octet n+3 is the least significant bit of the C-Id.