Upload
ambroserf
View
364
Download
32
Embed Size (px)
Citation preview
7/24/2019 Basic 2G Parameter Training
1/18
2 P r m t r Tr inin
Page 116-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
2/18
COMMON PARAMETER
CELL DATA
BSPWRBRange : 0-63dBm
Definition: Base Station output power in dBm for the BCCH RF channel number. The BTS can transmit with
.
power is specified at the Power Amplifier (PA) output, that is immediately after the transmitter unit and before the
combiner.
Recommended Value: GSM900 : 47 dBm, odd values only
GSM1800: 45 dBm odd values only
CGI MCC-MNC-LAC-CI
Range: MCC: 3 digits (Mobile Country Code).
MNC: 2 or 3 digits (Mobile Network Code).
LAC: 1 to 65535 (Location Area Code)
CI: 0 to 65535 (Cell Identity).
Definition: CGI (Cell Global Identity) is the global identity of the cell in the whole system. CGI is sent to the mobile
station (MS) as a part of the system information message (GSM Rec. 04.08). The combination MCC-MNC-LAC is
also known as the location area identity (LAI).
BSIC - NCC-BCC
Range: NCC: 0 to 7 (Network Colour Code).
BCC: 0 to 7 (Base station Colour Code)Definition: BSIC is defined on a per cell basis and it is sent on the logical synchronisation channel (SCH) on the
.
on the BCCH frequency. The colour code NCC is then used to discriminate cells that use the same frequency.
Though mainly intended for the purpose of differentiating PLMNs, it also serves to distinguish cells within
one PLMN that use the same frequency provided they have been assigned different NCC. If there are two
operators in a country, they can use more than two PLMN colour codes each one, provided that in border areas
Page 216-Jan-10 2010 Tigo Rwanda Rollout
only the values "n" and "n+4" are used. The measured signal levels on the serving cell.
The measured levels, the BSIC and the BCCH frequency of the neighboring cells.
7/24/2019 Basic 2G Parameter Training
3/18
COMMON PARAMETER
BCCHNO
Range: 1 to 124 (GSM 900).
0, 975 to 1023 (GSM 900, G1)512 to 885 (GSM 1800).
512 to 810 (GSM 1900).
Definition: The fre uenc carr in the BCCH Broadcast Control Channel in a cell is defined b the Absolute
Radio Frequency Channel Number, ARFCN, with the parameter BCCHNO. The defined ARFCN must be unique
within the cell.
BCCHTYPE
Range: COMB, COMBC, NCOMB. .
COMB indicates that the cell has a combined BCCH and SDCCH/4 (see section 0).
COMBC indicates that the cell has a combined BCCH and SDCCH/4 with a CBCH subchannel.
NCOMB indicates that the cell does not have any type of combined BCCH and SDCCH/4.
**The BCCH is always allocated to time slot number 0 (TN0) in the defined ARFCN.
AGBLK
Range: 0 to 7 if non-combined BCCH is used.
0 to 2 if combined BCCH and SDCCH/4 is used.
Definition: Number of reserved access grant blocks. Number of CCCH blocks reserved for the access grant
channel. The remainin CCCH blocks are used for the a in channel.
Recommended value: 1
MFRMS
Range 2 to 9.
Definition: Multiframes period. Defines period of transmission for PAGING REQUEST messages to the same
.
Recommended value: 3 or 4
ECSC
Range: NO, YES.
Definition: Early Classmark Sending Control. Indicates if an MS in the cell is allowed to use early classmark
Page 316-Jan-10 2010 Tigo Rwanda Rollout
sending.Note: The parameter ECSC has to be set to YES in order to allow the MS to send the MS multiband and/or
multislot capability. No multiband or multislot configuration will be established unless the MS capability is known.
7/24/2019 Basic 2G Parameter Training
4/18
COMMON PARAMETER
TSC
Range: 0 to 7
Definition: Training Sequence Code.The Training Sequence Code can only be changed for cells with a subcell structure.
MSTXPWR
Ran e: 13 to 43 GSM 900 odd values onl .
4 to 30 (GSM 1800) even values only.
4 to 30 (GSM 1900) even values only.
Definition: Maximum transmit power for MS on connection.
BSPWRT
Comments: Base Station output power in dBm for the non-BCCH RF channel numbers.
GSM 900: 31 to 47 dBm, odd values only
GSM 1800: 33 to 45 dBm, odd values only
Page 416-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
5/18
COMMON PARAMETER
Channel Group Data
CHGRRange: 0 to 15.
Definition: Channel group number.
A cell is divided into one or more channel rou s which contain all h sical channels on an arbitrar
number of frequencies. Cells with a subcell structure must have at least one channel group defined in each
subcell.
HOP
Range: ON, OFF .
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.
HSN
Range: 0 to 63
Definition: Hopping sequence number.
The hopping BPC is transmitted on a set of frequencies included in a Hopping Frequency Set (HFS). Theorder of the frequencies to transmit on is defined by the hopping sequence number HSN, as described in GSM
05.02.
HSN = 0 c clic ho in se uence.
HSN = 1 to 63 pseudo random sequences.
NUMREQBPC
Range: 8 to 128 in steps of 8, SYSDEF.
Definition: The number of required basic physical channels (BPCs) in a channel group.
. .
NUMREQBPC_CHGR1
222 333 444
CELL A 8 16 24
CELL B 8 16 24
Page 516-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
6/18
COMMON PARAMETER
DCHNO
Range: 1 to 124 (GSM 900).
0, 975 to 1023 (GSM 900 G1)512 to 885 (GSM 1800).
512 to 810 (GSM 1900).
. .
SDCCH
Range: 0 to 16
Definition: Comments: Required number of SDCCH/8.
Page 616-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
7/18
COMMON PARAMETER
Neighboring Relation Data
CELLRRange: 1 to 7 characters except ALL.
Definition: Related cell designation.
The identit of the nei hbourin cell for which the set of arameters should be a lied is s ecified b
means of CELLR. The name of the neighbouring cell must be specified here.
CTYPE
Range: EXT, Omitted.
Definition: If the neighbouring cell belongs to another BSC then this must be specified explicitly by means of.
.
RELATION
Range: SINGLE, MUTUAL
Definition: The parameter is only specified when the relation is one way cell to cellr. This means that offset and
hysteresis parameters are only defined in one/both direction
CSRange: YES, NO.
Definition : Co-site, which indicates if a cell shares the same site as its neighbour.
Page 716-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
8/18
COMMON PARAMETER
Implicit detach MSC data
BTDMRange: 6 to 1530 in steps of 6, OFF..
Definition: Base time duration of implicit detach of a mobile subscriber by the network.
BTDM must be as lon as the lon est eriodic u datin time T3212 in the interworkin BSCs.
The supervision time is the sum of BTDM and GTDM.
.
GTDM
Range: 0 to 255. .
implicit detached.
T3212
Range: 0 to 255.
Definition : T3212 time-out value. Defines the time-out value that controls the location updating procedure, i.e.
when notifying the availability of the MS to the network.
Page 816-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
9/18
COMMON PARAMETER
Idle mode behaviour cell data
ACCMINRange: 47 to 110.
Definition: Minimum received signal level in dBm at the MS for permission to access the system.
.
CCHPWR
Range: 13 to 43 in steps of 2 (GSM 900).
4 to 30 in steps of 2 (GSM 1800).
4 to 30 in steps of 2 (GSM 1900). .
CRH
Range: 0 to 14 in steps of 2.
Definition : Cell Reselection Hysteresis. Receiving signal strength (rxlev) hysteresis for required cell re-selection
over location area border.
NCCPERM
Range: 0 to 7.
Definition: PLMN NCC Permitted. Defines the allowed NCCs Network Colour Code on the BCCH carriers for
which the MS is permitted to send measurement reports.
CB
Range: YES, NO.
.
NO The cell is not barred for access.
YES The cell is barred for access.
Page 916-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
10/18
COMMON PARAMETER
Idle mode behaviour cell data
CBQRange: HIGH, LOW.
Definition: Cell Bar Qualify.
HIGH: The cell has hi h riorit
LOW: The cell has low priority
.
MAXRET , , , .
Definition: Maximum retransmissions. Defines maximum number of retransmissions an MS may do when
accessing the system on RACH.
ATT
Range: YES, NO.Definition : ATT tells the MS if it is allowed to apply IMSI attach and detach, i.e. if the MS is allowed to send a
message to the system every time it is turned on or off
.
CRO
Range: 0 to 63.
Definition: Cell Reselection Offset. Defines an offset to encourage or discourage MSs to select the
cell while it is camping on another cell, i.e. perform a cell reselection.
Page 1016-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
11/18
COMMON PARAMETER
Basic Ranking
BSPWRRange: 0 to 80. dBm
Definition: BSPWR is the BTS output power on the BCCH frequency. BSPWR is defined at the reference point
used in the locatin al orithm.
Recommended Value: 47 GSM 900; 45 GSM1800
MSRXMIN
Range: 0 to 150. dBm
a possible candidate for handover.
Recommended Value: 100
BSRXMIN
Range: 0 to 150. dBm
Definition : Minimum required signal strength received at the BTS, at the reference point, to consider the cell as apossible candidate for handover.
.
BSTXPWR
Range: 0 to 80 dBm
Definition: BSTXPWR is the BTS output power on all frequencies other than the BCCH frequency. BSTXPWR
indicates base station output power for the transmitter operating on a pure TCH frequency, at a common
.
Corrected signal strength of neighboring cells.
SS_DOWNn = rxlevn + BSTXPWRn - BSPWR n
Page 1116-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
12/18
COMMON PARAMETER
Urgency conditions cell data
TALIMRange: 0 to 63 (normal range cell).
Definition: Timing advance limit for handover. Urgency detection parameter.
Recommended Value: 62
Disconnection algorithm cell data
MAXTA
Range: 0 to 63 (normal cell). .
Recommended Value: 63
** MAXTA should always be greater than the parameter TALIM
RLINKUPRange: 1 to 63.
Definition : Radio link time-out. The maximum value of the radio link counter for the uplink. RLINKUP is used by
the BSC to determine when to disconnect the call u on re eated failure in decodin the SACCH.
.
RLINKT
Range: 8 to 64 in steps of 4.
Definition: Radio Link time-out. The maximum value of the radio downlink counter. RLINKT is used by the MS to
.
Page 1216-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
13/18
COMMON PARAMETER
Channel administration/Immediate assignment on TCH
CHALLOCRange: 0 to 2.
Definition: CHALLOC is used in the channel allocation algorithm to determine if a non-hopping TCH on the
BCCH fre uenc should be allocated with first last or with no reference.
0 No preference.
1 First preference.
2 Last preference.
Range: 0 to 7.
Definition: Channel Allocation Profile
The following eight channel allocation profile are available:
CHAP = 0 Default
CHAP = 1 Immediate assignment on TCH, SDCCH chosen first.
CHAP = 2 Immediate assignment on TCH, TCH chosen first, GSM Phase 2 MSs, Channel Needed provided bythe MSC.
CHAP = 3 Immediate assignment on TCH, TCH chosen first, GSM Phase 2 MSs,Channel Needed not provided
b the MSC.
CHAP = 4 Immediate assignment on TCH, TCH chosen first, GSM Phase 1 MSs, Channel Needed not provided
by the MSC.
CHAP = 5 Overlaid subcell as last resort.
CHAP = 6 Immediate assignment on TCH, SDCCH chosen first, Overlaid subcell as last resort.
.
NECI
Range: 0 and 1.
Definition : New establishments cause indicator. NECI is used to indicate to a GSM phase 2 MS whether to
Page 1316-Jan-10 2010 Tigo Rwanda Rollout
use GSM phase 1 establishment (NECI = 0) causes or the full set of GSM phase 2 establishment causes(NECI = 1).
7/24/2019 Basic 2G Parameter Training
14/18
COMMON PARAMETER
GPRS Channel administration
GPRSRange: ON, OFF.
Definition: Activates/deactivates GPRS support in the cell.
FPDCH
Range: 0 to 8.
Definition: FPDCH is used to dedicate a number of traffic channels in the cell for GPRS only. The dedicated
PDCH can not be pre-empted by circuit switched traffic.
Dynamic MS Power Control
DMPSTATE
Range: ACTIVE/INACTIVE.
Definition: Dynamic MS power control state.
Dynamic BTS power control DBPSTATE
Range: ACTIVE/INACTIVE.
Definition: D namic BTS ower control state.
SSDESDL
Range: 47 to 110.
Definition: Defines the target value for the desired signal strength downlink as measured by the MS in different
.
QDESDL
Range: 0 to 70.
Definition: Desired quality, downlink.
Page 1416-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
15/18
COMMON PARAMETER
MAIO Management
MAIORange: 0 to 15 or DEFAULT.
Definition: Mobile Allocation Index Offset. MAIO is a parameter that wi ll allow the operator to specify a lis t
of u to 16 MAIO values in the order in which the are to be allocated to a channel rou . This arameter can
also be set to DEFAULT, which removes the manual MAIO list in favor for the default MAIO list.
MAIO
Configuration
GSM900
222 333 444
CELLA 0 02 024
CELL
B 6 6
8 6
8
10
MAIOConfigurationGSM1800
222 333 444
CELLA DEFAULT DEFAULT DEFAULT
CELLB DEFAULT DEFAULT DEFAULT
CELLC DEFAULT DEFAULT DEFAULT
Intra cell handover
IHORange: ON, OFF.
Definition: Intra cell handover switch. Intra cell handover is a channel change between two channels
within the same subcell and if certain conditions are fulfilled a
subcell change within a cell.
ON Intra cell handover is allowed.
OFF Intra cell handover is not allowed.\
Range: 0 to 15.
Definition: Maximum number of consecutive intra-cell handovers.
Page 1516-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
16/18
COMMON PARAMETER
Hierarchical cell st ructures
LAYERRange: 1 to 8.
Definition: Cell layer, i.e. the priority of the cell. Layer 1 has the highest priority. It is recommended that the layers
are defined in increasin order connected to the size of the area the cells cover.
LAYERTHR
Ran e: 0 to 150.dBm
Definition: The signal strength threshold is used for ranking of cells in different layers within each HCSBAND.
LAYERHYST
Range: 0 to 63. .
HCSBAND.
Page 1616-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
17/18
COMMON PARAMETER
Idle channel measurements
ICMSTATERange: ACTIVE, PASSIVE, NOALLOC.
Definition: Idle Channel Measurement State.
LIMITn
Range: LIMIT1: 0 to 59.
LIMIT2: 1 to 60. .
LIMIT4: 3 to 62.
Definition: This parameter defines threshold limits for five different interference bands. The limits must be defined
in ascending order according to the following: LIMIT1 < LIMIT2 < LIMIT3 < LIMIT4.
Page 1716-Jan-10 2010 Tigo Rwanda Rollout
7/24/2019 Basic 2G Parameter Training
18/18
Thank you!
Page 1816-Jan-10 2010 Tigo Rwanda Rollout Page 18