8.86 Allocation/Retention Priority (ARP)
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
Allocation/Retention Priority (ARP) is coded as depicted in Figure 8.86-1.
|
Bits |
||||||||||
|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 |
Type = 155 (decimal) |
|||||||||
|
2 to 3 |
Length = n |
|||||||||
|
4 |
Spare |
Instance |
||||||||
|
5 |
Spare |
PCI |
PL |
Spare |
PVI |
|||||
|
6 to (n+4) |
These octet(s) is/are present only if explicitly specified |
|||||||||
Figure 8.86-1: Allocation/Retention Priority (ARP)
The meaning and value range of the parameters within the ARP are defined in 3GPP TS 29.212 [29]. The bits within the octet 5 are:
– Bit 1 – PVI (Pre-emption Vulnerability): See 3GPP TS 29.212[29], clause 5.3.47 Pre-emption-Vulnerability AVP.
– Bit 2 – spare
– Bits 3 to 6 – PL (Priority Level): See 3GPP TS 29.212[29], clause 5.3.45 Priority-Level AVP. PL encodes each priority level defined for the Priority-Level AVP as the binary value of the priority level.
– Bit 7 – PCI (Pre-emption Capability): See 3GPP TS 29.212[29], clause 5.3.46 Pre-emption-Capability AVP.
– Bit 8 – spare.