LTE Attach and Default Bearer Setup - EventHelix.com
LTE Attach and Default Bearer Setup - EventHelix.com
LTE Attach and Default Bearer Setup - EventHelix.com
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SIAP Initial Context <strong>Setup</strong><br />
Request<br />
S1AP: eNodeB MME<br />
S1AP Initial Context <strong>Setup</strong><br />
Request<br />
• The MME responds with MME UE<br />
S1AP ID that was received from<br />
the eNodeB in the initial UE<br />
message<br />
• The message also contains the<br />
MME UE S1AP ID<br />
• The message contains the<br />
maximum aggregate bit rate<br />
information.<br />
• The message also contains the<br />
information about the default<br />
eRAB.<br />
• QCI to assign session priority<br />
• The maximum bit rate for the<br />
eRAB<br />
• Guaranteed bit rate for the eRAB<br />
• Transport Layer Address assigns<br />
the IP Address for the user plane<br />
entity on the S-GW<br />
• GTP TE ID identifies the S-GW<br />
end of the user plane tunnel<br />
• The security capabilities specify<br />
the encryption <strong>and</strong> integrity<br />
protection algorithm to be used<br />
for the UE session<br />
MME UE S1AP ID<br />
ENB UE S1AP ID<br />
Aggregate Max<br />
Bitrate (AMBR)<br />
eRABs to <strong>Setup</strong><br />
UE Security<br />
Capability<br />
Security Key<br />
Downlink<br />
Uplink<br />
eRAB ID<br />
Encryption<br />
Algorithm<br />
Integrity Protection<br />
Algorithm<br />
<strong>EventHelix</strong>.<strong>com</strong><br />
• tele<strong>com</strong>munication design<br />
• systems engineering<br />
• real-time <strong>and</strong> embedded systems<br />
QCI<br />
eRAB Max Bit Rate<br />
Downlink<br />
eRAB Max Bit Rate<br />
Uplink<br />
RAB Guaranteed Bit<br />
Rate Downlink<br />
RAB Guaranteed Bit<br />
Rate Uplink<br />
Transport Layer<br />
Address<br />
GTP TE ID<br />
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