8.2.157 MPTCP Address Information
29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS
The MPTCP Address Information IE shall carry the address information of MPTCP proxy in the UPF. It shall be encoded as shown in Figure 8.2.157-1.
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 to 2 |
Type = 228 (decimal) |
|||||||||
|
3 to 4 |
Length = n |
|||||||||
|
5 |
Spare |
V6 |
V4 |
|||||||
|
6 |
MPTCP Proxy Type |
|||||||||
|
7 to 8 |
MPTCP Proxy Port |
|||||||||
|
p to (p+3) |
MPTCP Proxy IPv4 Address |
|||||||||
|
q to (q+15) |
MPTCP Proxy IPv6 Address |
|||||||||
|
m to (n+4) |
These octet(s) is/are present only if explicitly specified |
|||||||||
Figure 8.2.228-1: MPTCP Address Information
The following flags are coded within Octet 5:
– Bit 1 – V4: If this bit is set to "1", then the MPTCP Proxy IPv4 Address field shall be present in the MPTCP Address Information IE.
– Bit 1 – V6: If this bit is set to "1", then the MPTCP IPv6 Address field shall be present in the MPTCP Address Information IE.
– Bit 3 to 8 Spare, for future use and set to "0".
Octets 6 shall indicate the MPTCP Proxy Type, with the value specified in clause 6.1.4 of 3GPP TS 24.193 [59].
Octets 7 to 8 shall indicate the allocated TCP port number of the MPTCP Proxy.
Octets "p to (p+3)" or "q to (q+15)" (IPv4 address / IPv6 address fields), if present, shall contain the address value.