для Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 16
▀ MME Enhancements for 16.4
▄ Release Change Reference, StarOS Release 16
216
New Behavior: The validation process has been modified so that the MME now accepts UL F-TEID in a Create
Indirect Data Forwarding Response during intra-EUTRAN handover. So, the MME does not drop the response if the IE
of the UL F-TEID instance is 4 and the interface type is set to either 28 (SGW GTP-U interface for UL data forwarding)
or 1 (S1-U SGW GTP-U interface).
Indirect Data Forwarding Response during intra-EUTRAN handover. So, the MME does not drop the response if the IE
of the UL F-TEID instance is 4 and the interface type is set to either 28 (SGW GTP-U interface for UL data forwarding)
or 1 (S1-U SGW GTP-U interface).
Customer Impact: The MME will accept a broader range of responses from the S-GW.
CSCur52162 - Parser error for initial-ue msgs with nas-pdu length from than
127 bytes
Feature Changes
Parser Code Correctly Decodes Length More than 127 Bytes
Previous Behavior: If an "Initial UE" message was received at an MME demux manager, with the length of the "NAS-
PDU" IE more than 127 bytes, then such messages were forwarded to a random Session Manager.
PDU" IE more than 127 bytes, then such messages were forwarded to a random Session Manager.
New Behavior: If an "Initial UE" message is received at an MME demux manager, with the length of the "NAS-PDU"
IE more than 127 bytes, then such messages are now forwarded directly to the specific host Session Manager if the
subscriber is known at the MME.
IE more than 127 bytes, then such messages are now forwarded directly to the specific host Session Manager if the
subscriber is known at the MME.
Customer Impact: This helps to avoid unnecessary signaling to the MME in situations where the subscriber is already
known by the MME.
known by the MME.
CSCur73766 - TAU Reject Cause 0 after Auth Req Timeout
Feature Changes
Prevent Sending of TAU Reject
Previous Behavior: TAU Reject was sent in situations where F-GUTI TAU Failure occurred due to Authentication
Request Timeout.
Request Timeout.
New Behavior: TAU Reject is no longer sent in situations where F-GUTI TAU Failure occurs as a result of
Authentication Request Timeout.
Authentication Request Timeout.
Customer Impact: By not sending TAU Reject in such situations, signalling should be reduced on released S1AP (or
radio connection) from an eNB.
radio connection) from an eNB.
CSCur89996 - MME releases UE context with Category NAS : Unspecified for
Radio issues
Feature Changes
Configuring the Cause Code Mapping for UE-CONTEXT-RELEASE Sent from MME