, .
.
Idle (): MS , ;
Active ( ): MS , ;
Detached: MS
Implicit Detach: MS .
3 , GSM .
3
IDLE | (Registration) | , MS |
(Roaming) | , MS | |
(International Roaming) | , MS . MS , | |
Location Updating | MS , LA | |
Paging | , MS , .. MS MS | |
ACTIVE | Handover | , MS |
. 1.10
MS , Detach. MS , GSM , . MS , , MS. , , .
MS , , IDLE. , MS LA, MS .
MS . MS , [1]. LA, MS.
2 -
1 GSM.
1 - GSM
P-GSM 900 | E-GSM 900 | GSM 1800 | GSM 1900 | |
,
| 890-915 935-960 | 880-915 925-960 | 1710-1785 1805-1885 | 1850-1910 1930-1990 |
, c. | ~33 | ~33 | ~17 | ~16 |
[2] | ||||
, /. |
|
|
, . . . 1 . :
..
. ( ). , , .
. 2.1 , .
. 2.1
. , . l - . l . ( /.).
1.1.
(2.1)
, GSM 900 :
2.1 , , . , , . , , . FM .
, . , .
, , .
, , , uplink MS BTS. . , , , .
, , . , , /.
. 2 .
2
, FM | ||
, | ||
, , FM, . , , , : , - .
|
|
uplink, downlink.
. 2.2 .
. 2.2 -
(uplink, downlink), . .
. . 2.3, GSM 900.
. 2.3
, [3]. , .
.
. , . . 2.4 .
. 2.4
. 2.4 , 895.4 895.6 . 200 . .