Thursday, January 10, 2008

[Tokyo] 光都東京・LIGHTOPIA


撮影日付:31th Dec 2007
撮影場所:Tokyo, Japan. (東京皇居前)
機材:EOS KISS digital + EF 24-70mm

31th December 2007, Dairy III:
從餐廳慢慢地晃回皇居前,
除夕,是「光都東京・LIGHTOPIA」活動的最後一天了,
打上五彩燈光的樹,和它們在護城河水面的的倒影都好美~
在這邊嘗試著多秒數曝光的夜景拍法,
等著快門關閉的時間超冷 > <

再來繞到一個轉角之隔的[和田倉噴水公園],
是可以拍白光水舞的地方。

[Notes]
About P-TMSI (24.008/4.1.1.1 & 4.7.1.5)
P-TMSI allocation & reallocation
One category of the GMM common procedures
P-TMSI → Packet Temporary Mobile Subscriber Identity
When P-TMSI is assigned by NW to MS
[UMTS]
MS: New P-TMSI & RAI is valid upon receipt; old P-TMSI & RAI are invalid.
NW: Old P-TMSI & RAI become invalid when acknowledge message is received.
[GSM]
MS/NW: Old and new P-TMSI & RAI are valid at first
Why MS keeps old → To react to (1) paging request (2) DL LLC (Logic Link Control) frames
When MS/NW can regard old as invalid → Receives LLC frame with the local TLLI (Temporary Logical Link Identifier) derived from the new P-TMSI