9.2.2 Transport Network Layer Related IEs
25.4133GPPRelease 17TSUTRAN Iu interface Radio Access Network Application Part (RANAP) signalling
9.2.2.1 Transport Layer Address
For the PS domain, or for the CS domain in order to allow transport bearer establishment without ALCAP, this information element is an IP address to be used for the user plane transport. For the CS domain, in case of transport bearer establishment with ALCAP, this address is to be used for Transport Network Control Plane signalling to set up the transport bearer.
|
IE/Group Name |
Presence |
Range |
IE type and reference |
Semantics description |
|
Transport Layer Address |
M |
BIT STRING (SIZE(1..160, …)) |
The Radio Network Layer is not supposed to interpret the address information. It should pass it to the transport layer for interpretation. For details on the Transport Layer Address, see TS 25.414 [9]. |
9.2.2.2 Iu Transport Association
This element is used to associate the RAB and the corresponding transport bearer. For the CS domain this information element is either the Binding ID to be used in Transport Network Control Plane signalling during set up of the transport bearer or it contains the UDP port in order to allow transport bearer establishment without ALCAP. In PS domain this information element is the GTP Tunnel Endpoint Identifier.
|
IE/Group Name |
Presence |
Range |
IE type and reference |
Semantics description |
|
Choice Iu Transport Association |
||||
|
>TEID |
||||
|
>>GTP TEID |
M |
OCTET STRING (SIZE(4)) |
For details and range, see TS 29.281 [59] |
|
|
>Binding ID |
||||
|
>>Binding ID |
M |
OCTET STRING (SIZE(4)) |
If the Binding ID includes an UDP port, the UDP port is included in octet 1 and 2. The first octet of the UDP port field shall be included in the first octet of the Binding ID. |
9.2.2.3 DL GTP-PDU Sequence Number
This IE indicates the sequence number of the GTP-PDU which is the next to be sent to the UE.
|
IE/Group Name |
Presence |
Range |
IE type and reference |
Semantics description |
|
DL GTP-PDU Sequence Number |
M |
INTEGER (0 ..65535) |
This IE indicates the sequence number of the GTP-PDU which is next to be sent to the UE. |
9.2.2.4 UL GTP-PDU Sequence Number
This IE indicates the sequence number of the GTP-PDU which is the next to be sent to the SGSN.
|
IE/Group Name |
Presence |
Range |
IE type and reference |
Semantics description |
|
UL GTP-PDU Sequence Number |
M |
INTEGER (0 ..65535) |
This IE indicates the sequence number of the GTP-PDU which is next to be sent to the SGSN. |
9.2.2.5 Correlation ID
This IE contains the GTP Tunnel Endpoint Identifier or GRE key to be used for the user plane transport between RNC and the L-GW as specified in TS 23.401 [48].
|
IE/Group Name |
Presence |
Range |
IE type and reference |
Semantics description |
|
Correlation ID |
M |
OCTET STRING (SIZE(4)) |
9.2.2.6 Tunnel Information
The Tunnel Information IE indicates the transport layer address and UDP port number
|
IE/Group Name |
Presence |
Range |
IE type and reference |
Semantics description |
|
Transport Layer Address |
M |
9.2.2.1 |
HNB’s Transport Layer Address. |
|
|
UDP Port Numbers |
O |
OCTET STRING (SIZE(2)) |
UDP Port Numbers if NAT/NAPT is deployed in the BBF access network. |