T3210/T3211
T3210 and T3211 is timer that is related to Location Updating process. The function of these timers are defined in 24.008 as follows.
< Table 11.1/3GPP TS 24.008: Mobility management timers - MS-side >
If I represent into sequence diagram, it can be as follows.
Example 1 >
|
Step |
Direction |
Message |
Comment |
|
1 |
UE -> NW |
Channel Request/Handover Access |
|
|
2 |
UE <- NW |
Immediate Assignment |
|
|
3 |
UE -> NW |
Location Updating Request |
T3210 Start on UE |
|
4 |
UE <- NW |
Identity Request |
|
|
5 |
UE -> NW |
Identity Response |
|
|
6 |
NW |
< Do not send Location Updating > |
|
|
7 |
UE |
|
20 sec elapsed since step 3 |
|
8 |
UE |
|
T3210 expire/T3211 Start |
|
9 |
UE |
|
15 sec elapsed since step 8 |
|
10 |
|
|
T3211 Exipires |
|
11 |
UE -> NW |
Channel Request/Handover Access |
|
|
12 |
UE <-> NW |
< Normal Location Updating > |
|