GSM BTS power control Parameter

BTS power control
Parameter	Description	Range	Ericsson Dafault Value	Remarks
DBPSTATE	Dynamic BTS power control state	ACTIVE, INACTIVE	INACTIVE
SDCCHREG	SDCCH power control switch	ON, OFF	OFF	SDCCH power control switch. Identifies if power control on SDCCH is allowed on non BCCH frequencies.
SSDESDL	defines the target value for the desired signal strength downlink as measured by MS in different parts of the power control interval.	47 to 110 dbm	70	Lower desired SS to prevent interference in Urban Area
REGINTDL	Regulation interval, downlink	1 to 10 SACCH periods	5	Faster steps of powering up by 2 dB at 1 SACCH
SSLENDL	Length of downlink signal strength filter	3 to 15 SACCH periods	5
LCOMPDL	Path Loss compensator factor, downlink	0 to 100 %	70	When set to zero there is no power control towards SSDESDL.
QDESDL	Desired quality, downlink	0 to 70 dtqu	20	RxQual = 0
QCOMPDL	Quality deviation compensation factor, downlink	0 to 60 %	30%	When set to zero, no quality compensation is performed.
QLENDL	Length of downlink quality filter	1 to 20 SACCH periods	8
BSPWRMIN	Min allowed output power for the BTS at the locating reference point on the non Bcch freqs	-20 to +50 dbm	20

GSM MS power control Parameter

MS power control
Parameter	Description	Range	Ericsson Dafault Value	Remarks
DMPSTATE	Dynamic MS power control state	ACTIVE, INACTIVE	INACTIVE	-
SSDES	Defines the target value for the desired signal strength uplink measured by the BTS during the stationary phase.	47 to 110 dbm	85	Lower desired SS to prevent interference in Urban Area
INIDES	Defines the target value for the desired signal strength uplink measured by the BTS during the initial phase.	47 to 110 dbm	70	-
SSLEN	Length of stationary signal strength filter	3 to 15 SACCH periods	5	The value of SSLEN > INILEN.
INILEN	Length of initial signal strength filter	0, 2 to 5 SACCH periods	2	Faster when value is lower
LCOMPUL	Path loss compensator factor, uplink. When set to zero, no power control towards SSDES is performed.	0 to 100%	70	-
PMARG	Power margin on the new channel at assignment, intra-cell handover and subcell change and on the old channel at assignment failure or handover failure.	0 to 20 dB	8	-
QDESUL	Desired quality uplink	0 to 70 dtqu	20	-
QLEN	Length of the uplink quality filter	1 to 20 SACCH periods	8	-
QCOMPUL	Quality deviation compensation factor, uplink	0 to 60 %	30	-
REGINT	Regulation interval, stationary, uplink	1 to 30 SACCH periods	3	MS power regulation is performed at intervals specified by REGINT. A new power order is issued only if the calculated power level is different from the current MS power level.
DTXFUL	Number of measurements periods before the full set of measurements are used	0 to 40 SACCH periods	5	-

GSM Cell Common Parameter

Cell Common Data
Parameter	Description	Range	Ericsson Dafault Value	Remarks
BSPWRB	Base Station output power for the BCCH RF channel numbers	0 -> 63 dbm	45	Note that RBS2301 and 2302 only can supports till 33dbm
				GSM 900: 31 to 47dbm In odd values only  / GSM 1800: 33 to 45dbm In odd values only
BSPWRT	Base Station output power for the non-BCCH RF channel numbers	0 -> 63 dbm	45	Note that RBS2301 and 2302 only can supports till 33dbm
				GSM 900: 31 to 47dbm In odd values only  GSM 1800: 33 to 45dbm In odd values only
CGI	Cell Global Identity (conisists of MCC-MNC-LAC-CI)	15 digit	-	MCC - Mobile Country Code,   MNC - Mobile Network Code   LAC - Location Area Code CI - Cell Identity,  [ MCC:3 digits, MNC: 2 or 3 digits, LAC: 1 to65535, CI: 65535]
BSIC	Base Station Identity Code (consists of NCC-BCC)	NCC: 0 to 7		BSIC is defined on a per cell basis and it is sent on the logical synchronisation channel (SCH) on the BCCH frequency. The measured levels, the BSIC and the BCCH frequency of the neighbouring cells.
	NCC - Network Coloue Code / BCC - Base station colour code	BCC: 0 to 7	-
BCCHNO	Absolute RF channel number for BCCH	1 to 124( GSM900)	-	Bcch - Broadcast Control Channel,    512 to 885 (GSM1800)
BCCHTYPE	1) COMB - indicates that the cell has a combined BCCH and SDCCH/4	COMB, COMBC, NCOMB	NCOMB	The BCCH is always allocated to time slot number 0 in the defined ARFCN
	2) COMBC - indicates that the cell has a combined BCCH and SDCCH/4 with CBCH subchannel			ARFCN - Absolute Radio Frequency Channel Number
	3) NCOMB - indicates that the cell does not have any type of combines BCCH and SDCCH/4 same paging subgroups	0 to 2 if combined Bcch and SDCCH/4 is used		CBCH - is used for transmission of messages when the function  Short Messages Service Cell Broadcast (SMSCB) is activate in the cell CBCH - Cell Broadcast Channel
FNOFFSET	Frame Number Offset - Indicates the time difference from the FN generator in the BTS	0 to 1325 TDMA Frames	0	To prevent that all cells on a site send BCCH channels at the same time it is possible to define a deviation with respect to the FN generator called FNOFFSET. By using FNOFFSET on a synchronised two or three sector site the time for decoding BSIC can be reduced. RBS2000 and 200 only support the range 0 to 1023.
ECSC	Early Classmark Sending Control - indicates if an MS in the cell is allowed to use early classmark Sending.		Yes	The parameter ECSC has to be set to YES in order to allow the MS to send the  MS mutliband and/or multislot capability.  No - Early sending is not allowed,   Yes - Early sending is allowed
TSC	Training Sequence Code	0 to 7	Same as BCC
MSTXPWR	Maximum transmit power for MS on connnection		33	13 to 43 dbm (GSM900) odd values only  and 4 to 30 dbm (GSM1800) odd values only
STATE	Cell or Channel Group state	ACTIVE, HALTED	-	The cell or channel group is active or halted
HOP	Frequency hopping status	ON, OFF, TCH	TCH	ON: The hopping status for the channel group is hopping for TCH and SDCCH OFF: The hopping status for the channel group is non hopping.                              SDCCHs as well as TCHs can hop.   A bcch will not hop even if it belongs to a channel group defined as hopping
HSN	Hopping Sequence Number	0 to 63	system	HSN=0 : cyclic hopping sequences  /  HSN=1 to 63 : pseudo random sequences
NUMREQBPC	The number of required basic physical channels (BPCs) in a channel group	8 to 128 in steps of 8, SYSDEF	SYSDEF	SYSDEF: system defined limit [ 1 TRX = 8]
DCHNO	Absolute RF channel number	1 to 124( GSM900)	-	GSM900: max 31 DCHNO, GSM1800: max 31 DCHNO, GSM1900: max 31 DCHNO
SDCCH	Required number of SDCCH/8	0 to 16	1	Refer to notes for different types of configurations
TN	Timeslot number where the SDCCH/8 will be located.	0 to 3 (normal cell).    0, 2 (extended range cell).	1	TN is only valid for CCHPOS = TN and must be equal for all channel groups in a cell.
CBCH	Cell Broadcast Channel	Yes, No	No
SCHO	SDCCH handover switch	ON, OFF	OFF	ON - handovers on SDCCH are allowed; OFF - handovers on SDCCH are not allowed
DTXD	Discontinuous Transmission Downlink	ON, OFF	OFF	Note: ON: DTX DL is enabled for the cell; OFF: DTX DL is disabled for the cell
DTXU	Uplink DTX indicator  , Uplink discontinuous transmission means that the MS does not  transmit continuously, but only when necessary, thus being able  to save batteries	0 to 2	1	0: The MSs may use uplink discontinuous transmission     1: The MSs shall use uplink discontinuous transmission     2: The MSs must not use uplink discontinuous transmission
MAIO	Mobile Allocation Index Offset	0 to 15 or DEFAULT	DEFAULT	MAIO is define (N-1 ) per cell as number of TRx
FHOP	Frequency Hopping	BB, SY	BB	BB: Baseband hopping ,  SY: Synthesiser hopping
CHGR	A cell is divided into one or more channel groups which contain all physical channels on an arbitrary number of frequencies. Cells with a subcell structure must have at least one channel group defined in each subcell.	0 to 15	0	0 (for cells without a subcell structure). n/a (for overlaid subcells). 0 (for underlaid subcells).
SCTYPE	Subcell type. SingTel does not use Intelligent Underlay Overlay [IUO]	UL, OL	-	UL The subcell type is underlaid. OL The subcell type is overlaid.