RADIO NETWORK PARAMETERS and CELL DESIGN

RADIO NETWORK PARAMETERS & CELL DESIGN DATA FOR ERICSSON’S GSM SYSTEM
90/1553-HSC 103 12/4 Uen Rev A 2002-09-25 1(198)
RADIO NETWORK PARAMETERS &
CELL DESIGN DATA FOR ERICSSON’S GSM
SYSTEMS
Contents
1 INTRODUCTION ....................................................................................................................................3
1.1 CDD STRUCTURE...................................................................................................................................4
1.2 CONVENTIONS........................................................................................................................................4
2 SITE DATA ...............................................................................................................................................7
2.1 COMMON SITE DATA ..............................................................................................................................7
3 CELL DATA .............................................................................................................................................8
3.1 COMMON DATA......................................................................................................................................8
3.2 NEIGHBOURING CELL RELATION DATA .................................................................................................27
3.3 IDLE MODE BEHAVIOUR .......................................................................................................................30
3.4 LOCATING ............................................................................................................................................46
3.5 CHANNEL ADMINISTRATION/IMMEDIATE ASSIGNMENT ON TCH ..........................................................76
3.6 GPRS/EGPRS CHANNEL ADMINISTRATION.........................................................................................83
3.7 DYNAMIC MS POWER CONTROL..........................................................................................................90
3.8 GPRS/EGPRS DYNAMIC MS POWER CONTROL .................................................................................94
3.9 DYNAMIC BTS POWER CONTROL.........................................................................................................95
3.10 DISCONTINUOUS TRANSMISSION ........................................................................................................100
3.11 FREQUENCY HOPPING.........................................................................................................................101
3.12 MAIO MANAGEMENT .......................................................................................................................104
3.13 INTRA CELL HANDOVER .....................................................................................................................106
3.14 ASSIGNMENT TO OTHER CELL.............................................................................................................111
3.15 OVERLAID/UNDERLAID SUBCELLS / SUBCELL LOAD DISTRIBUTION ...................................................113
3.16 HIERARCHICAL CELL STRUCTURES .....................................................................................................117
3.17 EXTENDED RANGE .............................................................................................................................122
3.18 DOUBLE BA LISTS..............................................................................................................................124
3.19 IDLE CHANNEL MEASUREMENTS ........................................................................................................126
3.20 CELL LOAD SHARING ..........................................................................................................................128
3.21 MULTIBAND OPERATION ....................................................................................................................131
3.22 DIFFERENTIAL CHANNEL ALLOCATION ..............................................................................................134
3.23 ENHANCED MULTI-LEVEL PRECEDENCE AND PRE-EMPTION SERVICE (EMLPP) ...............................144
3.24 ADAPTIVE CONFIGURATION OF LOGICAL CHANNELS .........................................................................148
3.25 GSM - UMTS CELL RESELECTION AND HANDOVER .........................................................................149
3.26 ADAPTIVE MULTI RATE .....................................................................................................................158
3.27 LINK QUALITY CONTROL IN ENHANCED GPRS..................................................................................158
3.28 GPRS LINK ADAPTATION ..................................................................................................................160
3.29 GPRS/EGPRS QUALITY OF SERVICE.................................................................................................161
3.30 INTERFERENCE REJECTION COMBINING .............................................................................................163
3.31 MULTI BAND CELL.............................................................................................................................163
3.32 GPRS/EGPRS CONNECTION CONTROL AND TRANSFER ...................................................................164
4 HARDWARE CHARACTERISTICS.................................................................................................166
4.1 ALLOCATION DATA FOR TRANSCEIVER GROUP ...................................................................................166

RADIO NETWORK PARAMETERS & CELL DESIGN DATA FOR ERICSSON’S GSM SYSTEM
2(198) 90/1553-HSC 103 12/4 Uen Rev A 2002-09-25
5 CDD FORMS ........................................................................................................................................174
6 INDEXES...............................................................................................................................................180
6.1 INDEX TO PARAMETERS......................................................................................................................189
6.2 INDEX TO COMMANDS........................................................................................................................193
6.3 CROSS-REFERENCE: MML-COMMAND PARAMETERS.........................................................................195
7 NEW / REMOVED / CHANGED PARAMETERS IN ERICSSON’S GSM SYSTEM R10 /
BSS R10 .........................................................................................................................................................198

RADIO NETWORK PARAMETERS & CELL DESIGN DATA FOR ERICSSON’S GSM SYSTEM
90/1553-HSC 103 12/4 Uen Rev A 2002-09-25 3(198)
1 INTRODUCTION
The present document explains the Cell Design Data (CDD) that must be
provided for each cell in an Ericsson GSM system, R10. This data is loaded in
the corresponding BSC by means of a Data Transcript file.
When a new Ericsson GSM system is built or when new cells are added or
changed in an existing Ericsson GSM system, the cell planner provides the
operator with a document for each cell containing data for the insertion of the
cell in the radio network. The data from all such documents is then converted
into a data transcript tape and loaded into the corresponding BSC.
A data transcript tape contains not only CDD information but also other data
needed for the complete configuration of the BSC and its BTSs. A description
of such information is out of the scope of this document.
In addition to the above-mentioned BSC cell parameters, some of the radio
related MSC parameters and exchange properties are included in this
document. These parameters are included in order to present a more complete
picture of the parameters that influence the design and evaluation of a radio
network.
Note: The MSC parameters are only defined for Ericsson Mobile Services
Switching Centres. These parameters may have another name or may not exist
at all in MSC’s manufactured by others than Ericsson.
This document gives references to GSM Recommendations.
This document provides short descriptions of Ericsson’s GSM system R10
parameters. For a full understanding of each of them, it is essential to study
the description of each particular feature. It should be noted that the
availability of a feature could depend on commercial agreements. Due to this
it is possible that certain parameters are not supported by an exchange.
The topics where GSM 800, GSM 900, GSM 1800 and GSM 1900 differ are
indicated.
This document assumes that the reader is acquainted with the channel
structure for GSM 800, GSM 900, GSM 1800 and GSM 1900, the TDMA
concept and the locating algorithm for Ericsson’s GSM systems.

RADIO NETWORK PARAMETERS & CELL DESIGN DATA FOR ERICSSON’S GSM SYSTEM
4(198) 90/1553-HSC 103 12/4 Uen Rev A 2002-09-25
1.1 CDD structure
The parameters in this document are organised according to radio network
features. The aim with this structure is to facilitate a more feature oriented cell
planning and network optimisation.
In each radio network feature section, the parameters are grouped into sub-
sections defined by the network entity where the parameter is defined. This is
described more elaborately in section 1.2.
The CDD is also arranged in a structure that corresponds to the subcell
structure shown in figure 1. Therefore some parameters appear in more than
one part of the CDD.
Cell
Underlaid
Subcell
Overlaid
Subcell
Channel
group
Channel
group
Channel
group
Channel
group
..
.
..
.
Figure 1 The subcell structure supported by Ericsson’s GSM system.
A subcell is a set of channels that share some specific characteristics. An
overlaid subcell serves a smaller part of the area of an underlaid subcell.
A cell always has an underlaid (UL) subcell, whereas the overlaid (OL)
subcell is optional. A subcell structure exists when there is an overlaid subcell
defined. The notation “cell/subcell data” (see section 1.2) is used in order to
clarify that these parameters may be defined per subcell.
Each subcell is divided into channel groups, which include a subset of the
frequencies defined for a cell. A channel group can not be shared between
different subcells. One frequency can be defined in only one channel group
within the cell.
1.2 Conventions
In this section, rules and conventions for the parameter section in the CDD
document are issued.
“The parameter is /valid for/set per/ XXXX”
MSC The parameter is valid for all cells in the MSC.
BSC The parameter is valid for all cells in the BSC.
BSC exchange property The exchange properties are changed by means of
a generic command, but they are essentially the
same as regular parameters.
Cell The parameter is valid for both UL and OL
subcell, if there is a subcell structure defined.

RADIO NETWORK PARAMETERS & CELL DESIGN DATA FOR ERICSSON’S GSM SYSTEM
90/1553-HSC 103 12/4 Uen Rev A 2002-09-25 5(198)
Cell/Subcell The parameter may be defined individually for UL
and OL subcells, in case there is a subcell structure
defined. Otherwise, they are defined per cell.
Neighbour Cell The parameter need to be defined for internal
neighbour cells.
External Cells See section 3.2.3
“Name of the parameter”, e.g. BSPWRB, DCASTATE, MSC NAME
If bold: BSC command parameters are written with capital
letters and are bold-faced.
If plain text: A “state variable” corresponding to a state of a
feature in the BSC/Cell, e.g. ACTIVE/INACTIVE.
The state variable is not a parameter and the state
variable is changed with a command.
If plain text in Italics: This parameter has no corresponding name in the
BSC command descriptions and the string has no
equivalence/meaning elsewhere in the system.