User's Manual

Ver.
CHAPTER 4. Message Flow
2600-00FKQFGA2
1.0
Service Request Initiated by the UE
The message flow for service request procedure by UE is illustrated below.
Figure 16. Service Request Procedure by UE
11) RRCConnectionReconfiguration Complete
UE
MME
S-GW
EPC
1) Random Access procedure
2) RRCConnectionRequest
3) RRCConnectionSetup
4) RRCConnectionSetupComplete
(SERVICE REQUEST)
5) INITIAL UE MESSAGE
(SERVICE REQUEST)
6) Authentication/NAS security setup
8) SecurityModeCommand
9) SecurityModeComplete
10) RRCConnectionReconfiguration
(SERVICE ACCEPT)
12) INITIAL CONTEXT SETUP RESPONSE
(SERVICE ACCEPT)
7) INITIAL CONTEXT SETUP REQUEST
13) Modify Bearer Request
14) Modify Bearer Response
Downlink data
Downlink data
Uplink data
Uplink data
Indoor Pico Cell
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