Release Note для Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 15.0
MME Enhancements for October 31, 2014 ▀
Cisco ASR 5x00 Release Change Reference ▄
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Notes:
The default behavior is to use the native EPS QOS.
Performance Indicator Changes
show mme-service all
The
show mme-service all
command now displays the configuration of this command in the following field:
NAS GMM QOS Mapped From
CSCuo27283 - Roaming QoS Control
Feature Changes
Roaming QoS Control
Previous Behavior: When the
qos prefer-as-cap both-hss-and-local minimum
configuration is set in APN-
Profile, the MME sends minimum values of only APN-AMBR and sends HSS values of QCI and ARP to S-GW. The
expected behavior should have been to have the minimum values sent for QCI, ARP and APN-AMBR for a roaming
session.
expected behavior should have been to have the minimum values sent for QCI, ARP and APN-AMBR for a roaming
session.
The MME also did not have the ability to configure whether to accept/reject GBR and Non-GBR dedicated bearers.
New Behavior: 1. The functionality of the APN Profile mode command
qos prefer-as-cap both-hss-and-
local minimum
is now extended to QCI and ARP in APN profile for roamers. This S6A control is applied whenever
the MME needs to apply Subscribed QoS. The relevant procedures are Create Session Request (Attach, UE requested
PDN connectivity) and Modify Bearer Command (ISD from HSS).
PDN connectivity) and Modify Bearer Command (ISD from HSS).
The MME takes into account the HSS-Provided and Locally-Configured QoS parameters and the minimum of QCI,
APN-AMBR, ARP, ARP-PCI and ARP-PVI will be sent in the Create Session Request. Note: This enhancement is
supported only for Default bearers (i.e Non-GBR bearers) in a roaming scenario.
APN-AMBR, ARP, ARP-PCI and ARP-PVI will be sent in the Create Session Request. Note: This enhancement is
supported only for Default bearers (i.e Non-GBR bearers) in a roaming scenario.
2. A new CLI is added in the APN Profile mode to provide configurability at MME to accept, reject, or locally-cap P-
GW upgraded QoS values for default (non-GBR) bearers. This S11 Control is applied whenever QoS parameters are
received on S11 interface. The relevant procedures for default bearers are Create Session Response (sent by P-GW
during Attach, UE requested PDN connectivity) and Update Bearer Procedures (initiated by P-GW resulting from
trigger QoS change or other in PCEF/PCRF, or from Modify Bearer Command or Bearer Resource Command sent by
MME). Note: This enhancement is supported only for Default bearers (i.e Non-GBR bearers) in a roaming scenario.
GW upgraded QoS values for default (non-GBR) bearers. This S11 Control is applied whenever QoS parameters are
received on S11 interface. The relevant procedures for default bearers are Create Session Response (sent by P-GW
during Attach, UE requested PDN connectivity) and Update Bearer Procedures (initiated by P-GW resulting from
trigger QoS change or other in PCEF/PCRF, or from Modify Bearer Command or Bearer Resource Command sent by
MME). Note: This enhancement is supported only for Default bearers (i.e Non-GBR bearers) in a roaming scenario.
3. A new CLI is added in the APN Profile mode to provide configurability at MME to accept or reject GBR and Non-
GBR dedicated bearers. This control is applied on S11 as well as NAS. The relevant procedures are Create Bearer
Request from S-GW and Bearer allocation request from UE. The MME differentiates GBR and Non-GBR dedicated
bearers as follows: GBR Bearers - QCI value ranges from 1 to 4; Non-GBR bearers - QCI value ranges from 5-9. Note:
Handling of multiple bearers in a Create Bearer request from S-GW for Partial accept/reject of GBR/Non-GBR
dedicated bearers is a current limitation.
GBR dedicated bearers. This control is applied on S11 as well as NAS. The relevant procedures are Create Bearer
Request from S-GW and Bearer allocation request from UE. The MME differentiates GBR and Non-GBR dedicated
bearers as follows: GBR Bearers - QCI value ranges from 1 to 4; Non-GBR bearers - QCI value ranges from 5-9. Note:
Handling of multiple bearers in a Create Bearer request from S-GW for Partial accept/reject of GBR/Non-GBR
dedicated bearers is a current limitation.