для Cisco Cisco Packet Data Gateway (PDG)
show mme-service name
The following new parameters are added to this show command to display the statistics for this feature:
• APN not supported PLMN-RAT esm-proc : Requested APN not supported in current RAT and PLMN
combination (esm-66)
• APN not supported PLMN-RAT Attach: ESM failure (emm-19), Requested APN not supported in
current RAT and PLMN combination (esm-66)
• APN not supported PLMN-RAT TAU: No Suitable Cells In tracking area (emm-15)
EPC QoS Attributes
CSCut64359 - for eARP and APN-AMBR and UE-AMBR QoS attributes on Gn-SGSN.
Feature Changes
The Gn-Gp SGSN now supports EPC QoS parameters during PDP Activation/Modification procedures.
Support is added for Evolved-ARP, APN-AMBR and UE-AMBR QoS parameters. The purpose of adding
this support is to achieve end to end synchronization of QoS parameters during IRAT (3G/4G) mobility
procedures. In previous releases it was observed that there is no synchronization between QoS parameters
during TAU/RAU mobility from a 4G scenario to a 3G scenario or vice versa.
Support is added for Evolved-ARP, APN-AMBR and UE-AMBR QoS parameters. The purpose of adding
this support is to achieve end to end synchronization of QoS parameters during IRAT (3G/4G) mobility
procedures. In previous releases it was observed that there is no synchronization between QoS parameters
during TAU/RAU mobility from a 4G scenario to a 3G scenario or vice versa.
The EPC QoS attributes now supported Gn SGSN can be briefly described as below:
Evolved-ARP (E-ARP): Evolved allocation or retention priority specifies the relative importance of a Radio
Access Bearers as compared to other Radio Access Bearers for allocation or retention of the Radio access
bearer. The EPC uses Evolved ARP, which has priority level ranging from "1" up to "15". Additionally,
evolved ARP comprises of pre-emption capability and pre-emption vulnerability. The preemption capability
information defines whether a bearer with a lower priority level should be dropped to free up the required
resources. The pre-emption vulnerability information indicates whether a bearer is applicable for such dropping
by a preemption capable bearer with a higher priority value.
Access Bearers as compared to other Radio Access Bearers for allocation or retention of the Radio access
bearer. The EPC uses Evolved ARP, which has priority level ranging from "1" up to "15". Additionally,
evolved ARP comprises of pre-emption capability and pre-emption vulnerability. The preemption capability
information defines whether a bearer with a lower priority level should be dropped to free up the required
resources. The pre-emption vulnerability information indicates whether a bearer is applicable for such dropping
by a preemption capable bearer with a higher priority value.
APN-AMBR (per APN Aggregate Maximum Bit Rate): The APN-AMBR limits the aggregate bit rate that
can be provided across all Non- GBR PDP contexts of the same APN (for example, excess traffic may get
discarded by a rate shaping function). Each of those Non-GBR PDP contexts can potentially utilize the entire
APN AMBR (for example, when the other Non- GBR PDP contexts do not carry any traffic). The PGW
enforces the APN AMBR in downlink. Enforcement of APN AMBR in uplink may be done in the UE and
additionally in the PGW.
can be provided across all Non- GBR PDP contexts of the same APN (for example, excess traffic may get
discarded by a rate shaping function). Each of those Non-GBR PDP contexts can potentially utilize the entire
APN AMBR (for example, when the other Non- GBR PDP contexts do not carry any traffic). The PGW
enforces the APN AMBR in downlink. Enforcement of APN AMBR in uplink may be done in the UE and
additionally in the PGW.
UE-AMBR: The UE AMBR limits the aggregate bit rate that can be provided across all Non-GBR PDP
contexts of a UE (for example, excess traffic may get discarded by a rate shaping function). Each of the
Non-GBR PDP contexts can potentially use the entire UE AMBR (for example, when the other Non-GBR
PDP contexts do not carry any traffic). The GBR (real-time) PDP contexts are outside the scope of UE AMBR.
The RAN enforces the UE AMBR in uplink and downlink.
contexts of a UE (for example, excess traffic may get discarded by a rate shaping function). Each of the
Non-GBR PDP contexts can potentially use the entire UE AMBR (for example, when the other Non-GBR
PDP contexts do not carry any traffic). The GBR (real-time) PDP contexts are outside the scope of UE AMBR.
The RAN enforces the UE AMBR in uplink and downlink.
With this feature enhancement the SGSN now supports the following functionalities:
1
EPC QoS parameters for Gn/Gp interface activated PDPs are supported.
2
The Gn-Gp SGSN reads the EPC QoS parameters from the HLR/HSS and the user.
3
The Gn-Gp SGSN now performs capping of the QoS parameters and sends the negotiated values towards
the GGSN and RAN.
the GGSN and RAN.
Release Change Reference, StarOS Release 19
408
SGSN Changes in Release 19
EPC QoS Attributes