8.2.158 UE Link-Specific IP Address
29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS
The UE Link-Specific IP Address IE shall carry link-specific IP address used for MPTCP steering function. It shall be encoded as shown in Figure 8.2.158-1.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 to 2 |
Type = 229 (decimal) |
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3 to 4 |
Length = n |
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5 |
Spare |
NV6 |
NV4 |
V6 |
V4 |
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p to (p+3) |
UE Link-Specific IPv4 Address for 3GPP Access |
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q to (q+15) |
UE Link-Specific IPv6 Address for 3GPP Access |
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r to (r+3) |
UE Link-Specific IPv4 Address for Non-3GPP Access |
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s to (s+3) |
UE Link-Specific IPv6 Adress for Non-3GPP Access |
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m to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.2.158-1: UE Link-Specific IP Address
The following flags are coded within Octet 5:
– Bit 1 – V4: If this bit is set to "1", then the UE Link-Specific IPv4 Address for 3GPP Access shall be present in the UE Link-Specific IP Address IE.
– Bit 2 – V6: If this bit is set to "1", then the UE Link-Specific IPv6 Address for 3GPP Access shall be present in the UE Link-Specific IP Address IE.
– Bit 3 – NV4: If this bit is set to "1", then the UE Link-Specific IPv4 Address for Non-3GPP Access shall be present in the UE Link-Specific IP Address IE.
– Bit 4 – NV6: If this bit is set to "1", then the UE Link-Specific IPv6 Address for Non-3GPP Access shall be present in the UE Link-Specific IP Address IE.
– Bit 5 to 8 Spare, for future use and set to "0".
Octets "p to (p+3)" or "q to (q+15)" (IPv4 address / IPv6 address fields), if present, shall contain the value for UE Link-Specific IP Address for 3GPP access.
Octets "r to (r+3)" or "s to (s+15)" (IPv4 address / IPv6 address fields), if present, shall contain the value for UE Link-Specific IP Address for Non-3GPP access.