3GPP 24.501 v20.0.0 — the document's own text
9.11.3.57 Uplink data status
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The purpose of the Uplink data status information element is to indicate to the network which preserved PDU session(s) have uplink data pending or which preserved PDU session(s) are associated with active multicast MBS session(s).
The Uplink data status information element is coded as shown in figure 9.11.3.57.1 and table 9.11.3.57.1.
The Uplink data status information element is a type 4 information element with minimum length of 4 octets a maximum length of 34 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Uplink data status IEI | octet 1 | |||||||
| Length of uplink data status contents | octet 2 | |||||||
| PSI(7) | PSI(6) | PSI(5) | PSI(4) | PSI(3) | PSI(2) | PSI(1) | PSI(0) | octet 3 |
| PSI(15) | PSI(14) | PSI(13) | PSI(12) | PSI(11) | PSI(10) | PSI(9) | PSI(8) | octet 4 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| spare | octet 5* -34* |
Figure 9.11.3.57.1: Uplink data status information element
Table 9.11.3.57.1: Uplink data status information element
| PSI(x) shall be coded as follows:PSI(0):Bit 1 of octet 3 is spare and shall be coded as zero.PSI(1) – PSI(15):0 indicates that no uplink data are pending for the corresponding PDU session identity or the PDU session is in PDU SESSION INACTIVE state or is in PDU SESSION ACTIVE state with user-plane resources already established.1 indicates that uplink data are pending for the corresponding PDU session identity and the user-plane resources for the corresponding PDU session are not established, or the UE has active multicast MBS session(s) associated with the corresponding PDU session.All bits in octet 5 to 34 are spare and shall be coded as zero, if the respective octet is included in the information element. |
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