撮影日付：1st June 2008
撮影場所：Seoul, Korea. (韓国ソウル)
機材：EOS Kiss digital + EF 24-70mm
在仁寺洞附近的三一公園前拍下這兩張照片的時候，
每天關lab的我，
完全不知道韓國政局上到底發生了什麼事。
我吃完星期天的難得的美好午餐，
經過馬路另一頭聽到彈吉他的歌聲被吸引而來的時候，
還以為是小型民歌演唱會呢，
當看到台下的人戴著韓國國旗的遮陽帽，
又開始注意到附近有成隊的警察，我才發現有點異樣。
[Cat Note]
24.008/4.4.1 Location updating procedure
1) Normal Location Update must under MM_IDLE
2) If MM_IDLE but also RECEIVING_GROUP_CALL, need to leave group receiving mode.
3) Normal Location Update can be started if NW indicates MS is unknown to the VLR (Visitor Location Register)
Note: Location Updating Request has only one direction (MSàNW)
4) If LAU succeeds, MS sets status as UPDATED and stores Location Area Identification (on BCCH) in the USIM/SIM, and reset LUR attempt counter, which is to restrict the number of LUR attempts.
5) ME should keep "forbidden location areas for roaming", and erase it each time USIM is (power) off or periodically.
6) MS should keep “equivalent PLMNs list" up to 16 records and erase when USIM is removed (ME power status is not considered.)
7) The priority of emergency call is higher then LAU; LAU can be delayed in this case.
☆ Radio Bearer only used in connected mode. It can be categorized in to Signaling Radio Bearer (SRB: carries signaling) and Radio Access Bearer (RAB: carries user data or voice).
☆ Cell Reselection is by UE RRC layer, which occurred only in Idle Mode, Cell_FACH, Cell_PCH and URA_PCH. UE uses SIB (Idle: 3 and 11; others: 4 and 12, but if NW does not have, use 3 and 11) to decide which to change.
Note: In Cell_DCH, the mechanism similar to CR is Active Set Update.
