Cisco Cisco Packet Data Interworking Function (PDIF)
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MME Changes in Release 17
▀ MME Enhancements for 17.5
▄ Release Change Reference, StarOS Release 17
244
CSCuu45609 - MME Misbehaves while S1-HO-SGW-REloc fails due to no
response for MBreq.
Feature Changes
Reducing Signaling
Previous Behavior: Deactivate Bearer Request is sent to the UE after Detach Request is sent when Modify Bearer
Request timed out in S1-HO with SGW relocation.
Request timed out in S1-HO with SGW relocation.
New Behavior: Because Deactivate Bearer Request is not required, it is not sent to the UE after Detach Request is sent
to the UE when Modify Bearer Request timed out in S1-HO with SGW relocation. This results in reduced signaling.
to the UE when Modify Bearer Request timed out in S1-HO with SGW relocation. This results in reduced signaling.
CSCuv16974 - Cell Traffic Trace files to include eNodeBId eNodeBUeS1ApId
Feature Changes
Trace Extension for C Type Files
Previous Behavior: Earlier, the C Type file format only included IMSI and IMEI (SV) fields.
New Behavior: From this release onwards, the C Type file format is modified to include three additional fields–
eNodeB ID, eNodeB UE S1 AP ID and MME UE S1 AP ID. The existing command
eNodeB ID, eNodeB UE S1 AP ID and MME UE S1 AP ID. The existing command
trace-extension
is modified to
include these addional fields.
Customer Impact: The new CLI configuration allows the operator to view additional Cell Traffic Trace information
from the addtional fields–eNodeB ID, eNodeB UE s1 AP ID and MME UE s1 AP ID in the C Type files.
from the addtional fields–eNodeB ID, eNodeB UE s1 AP ID and MME UE s1 AP ID in the C Type files.
Command Changes
trace-extension
New keywords make it possible to trace additional fields:
configure
template-session-trace network-element enb template-name cell-trace
[ no ] trace-extension enb-id ue-s1ap-id
end
Notes:
The
trace-extension
command defines the UE or eNodeB identity extension parameters for the C Type files.
The
enb-id
keyword is an additional field in the C Type file that identifies the global eNodeB entry.
The
ue-s1ap-id
keyword is an additional field in the C Type file that identifes the eNodeB UE S1AP identity
and the MME UE S1AP identity.