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Cell (cell identifier), BTS and BSS in the GSM network

  • What is the relationship between the BTS and the cell? I think that one BTS equipment can span multiple cells, and some cells can be covered by more than one BTS, right?

  • Is part of the information that the mobile receives from the GSM network identification of a specific BTS or mobile phone, only the cell identifier knows?

  • Is part of the information that a mobile receives from identifying a GSM BSC network?

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Ad 1: Typically, one BTS can process multiple cells. Conventional patterns are a single BTS spanning a circular area with one radiating circular antenna or a three-section BTS that spans three cells with sector emitting antennas. One cell can only be transmitted one BTS at a time. Two or more BTSs are not possible because radio communications will interfere with each other. Note that this is completely different in WCDMA / UMTS, as there is no concept of cells.

Announcement 2: Since one cell is covered by exactly one BTS, the cell identifier uniquely identified a specific BTS.

Announcement 3: Since the BTS does not contain any control logic, mobile communication directly communicates with the BSC, for example. about radio resources.

Edit after comment:

1/BTS "", . , BSC . . BSC BTS, , . BTS , BSC. , BTS, BSC. BTS Um-to-Abis .

2/ , UMTS , , .

GSM - FTDMA ( ). ( ) ( ). , , GSM . , . , , , (, - ). GSM BTS , BTS. , , .

UMTS - CDMA ( ). , , . , ( , , ) . : - , . , , BTS/ Node -B . UMTS . "" .

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, , .

GSM , BTS ( ) - " " ( BTS - ). .

GSM . " ( , UL/DL , BA). .

. BSIC ( BS BTS) " " MS ( ) BSS (BTS BSC), . .

BSIC "" - (NCC) BS (BCC) . Cell:

. A (CI) - RA . (GCI) , RA CI .

BSIC (BSC BSIC GCI, BSC CI, BSC GCI), BSC.

, .

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BTS !

MS, BTS, BSC, , BTS - MSC.

( ) BTS.

In NOKIA gsm equipment, a cell is called a segment. Each cell has at least one BTS, different BTS have different functions, for example: BTS1 provides voice service, BTS2 provides EDGE service.

The phone receives BCCH (freq) / NCC / BCC to identify different cells. Decrypt BCCH information to get CI, LAC ... etc.

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