ENDC/X2 Setup Response / Setup Failure Response Design

1. Current State

There are 4 handlers which replicate code:

Handler	Current BL
ENDC Setup Response	Retrieve request from session Unpack and return protobuf using unpackEndcX2SetupResponseAndExtract Create NEW NodebInfo entity and NbIdentity entity and populate it with: RanName, RanIp, RanPort FROM the session’s request GlobalNbId from gnbId (protobuf) Configuration from gnb (protobuf) ConnectionStatus = CONNECTED E2ApplicationProtocol = ENDC_X2_SETUP_REQUEST NodeType = Node_GNB SaveNodeb Delete from session
X2 Setup Response	Retrieve request from session Unpack and return protobuf using unpackX2SetupResponseAndExtract Create NEW NodebInfo entity and NbIdentity entity and populate it with: RanName, RanIp, RanPort FROM the session’s request GlobalNbId from enbId (protobuf) Configuration from enb (protobuf) ConnectionStatus = CONNECTED E2ApplicationProtocol = X2_SETUP_REQUEST NodeType = Node_ENB SaveNodeb
ENDC Setup Failure Response	Retrieve request from session Unpack and return protobuf using unpackEndcX2SetupFailureResponseAndExtract Create NEW NodebInfo entity and NbIdentity entity and populate it with: RanName, RanIp, RanPort FROM the session’s request SetupFailure from failureResponse (protobuf) FailureType = ENDC_X2_SETUP_FAILURE ConnectionStatus = CONNECTED_SETUP_FAILED SaveNodeb
X2 Setup Failure Response	Retrieve request from session Unpack and return protobuf using unpackX2SetupFailureResponseAndExtract Create NEW NodebInfo entity and NbIdentity entity and populate it with: RanName, RanIp, RanPort FROM the session’s request SetupFailure from failureResponse (protobuf) FailureType = X2_SETUP_FAILURE ConnectionStatus = CONNECTED_SETUP_FAILED SaveNodeb

2. Proposed Solution

3. Sequence Diagram

4. Test Plan

Valid RAN Connection Status = CONNECTED or CONNECTING
In both Setup / Setup Failure flows connection attempts shall be reset

Type	Test Case	Expected Behavior
SAD	GetNodeb failure	Log error and return
SAD	GetNodeb success Invalid RAN Connection Status	Log error and return
HAPPY	GetNodeb success Valid RAN Connection Status Valid X2 setup response payload SaveNodeb success	Nodeb should be updated with enb data and saved to DB
HAPPY	GetNodeb success Valid RAN Connection Status Valid ENDC setup response payload SaveNodeb success	Nodeb should be updated with gnb data and saved to DB
HAPPY	GetNodeb success Valid Connection Status Valid X2 setup failure response payload SaveNodeb success	Nodeb should be updated with failure data and saved to DB
HAPPY	GetNodeb success Valid RAN Connection Status Valid ENDC setup failure response payload SaveNodeb success	Nodeb should be updated with failure data and saved to DB
SAD	GetNodeb success Valid RAN Connection Status Invalid payload	Log error and return
SAD	GetNodeb success Valid Ran Connection Status Valid payload SaveNodeb failure	Log error and return