Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
Post on 10-Feb-2018
218 Views
Preview:
Transcript
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
1/88
Document No. Product name
Intended audience Huawei customers Product version
Drafted by Document version
Guide to CDMA 1x EVDO BSS Network
Planning Parameter Configuration
Prepared by Radio network planning department Date August 2005
Reviewed by Radio network planning department Date August 2005
Reviewed by Date
Approved by Date
Huawei Technologies Co., Ltd.
All rights reserved
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
2/88
Table of Contents
Chapter 1 About This Document ............................................................................................... 6Chapter 2 System Parameters ................................................................................................... 7
2.1. Sector Parameters..................................................................................................... 72.2. Control Channel Parameters ................................................................................ 152.3. Neighbor AN Parameters........................................................................................ 16
Chapter 3 Access Parameters................................................................................................... 19Chapter 4 Power Control Parameters..................................................................................... 34
4.1 Power Control Parameters ............................................................................................. 34Chapter 5 Handoff Parameters................................................................................................. 49
5.1 Module Handoff Parameters.................................................................................. 495.3 Carrier Configuration Negotiation Handoff Parameters ................................... 535.4 Sector Carrier Idle Handoff Parameters .............................................................. 645.5 Same-frequency Neighbor Handoff Parameters ................................................. 675.6 Algorithm Module Handoff Parameters ............................................................... 72
Chapter 6 Configuration Negotiation Parameters .............................................................. 816.1 Global Configuration Negotiation Parameters ............................................................ 816.2 Service Parameters ......................................................................................................... 836.3 Carrier Configuration Negotiation Parameters ........................................................... 84
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
3/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 3 of 88
Guide to CDMA 1x EVDO BSS Network Planning
Parameter Configuration
Key words: EVDO, parameter configuration, configuration negotiation, power control,
and handoff
Abstract: This document gives an in-depth description of the relevant parameters in
EVDO network planning, suggestions on parameter configurations, and advantages &
disadvantages of different configurations. It provides references for network
optimization engineers to make the best of these radio resource management
algorithms to optimize the network coverage, network capacity and performances of
traffic measurement indexes.
Acronyms and Abbreviations:
AN Access Network
ANID Access Network Identifiers
AT Access Termination
ATI Access Termination Identifier
BTS Base Transmitter Station
BSC Base Station Controller
DRC Data Rate Control
FMR Frame Processing Board
HRPD High Rate Packet Data
IMSI International Mobile Subscriber Identity
MAC Medium Access Control
MATI Multicast Access Termination Identifier
NAI Network Access Identifier
NID Network Identification
PCF Packet Control Function
PDSN Packet Data Serving Node
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
4/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 4 of 88
PER Packet Error Ratio
PZID Packet Zone Identification
RA Reverse Activity
RATI Random Access Termination Identifier
RLP Radio Link Control
RPC Reverse Power Control
RRI Reverse Rate Indicator
SID System Identification
UATI Unicast Access Termination Identifier
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
5/88
Note:
This guide is used only by the customers of Huawei-related products. Thecustomers must conform to the non-disclosure agreement entered by two parities.
No part of this document may be reproduced or transmitted in any form or by anymeans without prior written consent of Huawei Technologies Co., Ltd.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
6/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 6 of 88
Chapter 1 About This Document
In this guide, the corresponding BSC version is BSC6600-- OMCV200R001C02B014.
The fields about parameters in this guide are explained as follows
[Type] This field specifies the parameter type: An algorithm parameter or an Um
interface parameter. For an Um interface parameter, the system message that
contains the parameter and corresponding domain are given. For the configuration
negotiation parameter, the default value of system is also provided.
[Range and unit]This field specifies the range of the parameter. The value range is
closely related to the data structure.
[Operating range]This field specifies the allowable adjustment range of parameter in
practice. Modify the parameter within the above available range during the network
optimization.
[Recommended value]It is a default value of system, but not always applicable in
any case. In combination with the practical requirements, refer to the description of
Setting tradeoff to define the parameter value. If the default value is inconsistent
with recommended value in this guide, the recommended value prevails.
[Setting tradeoff] This field means the effect after increasing or decreasing the
parameter based on recommended value.
[Remarks]This field describes further the meanings of some parameters.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
7/88
C hapter 2 System Parameters
2.1. Sector Parameters
SUBNETMASK (Subnet Mask)
[Description]
Refer to AN subnet mask of EV-DO carrier determined by [Cell ID], [Sector ID] and
[Carrier ID].
[Type]
Um interface parameter, and sent in SubnetMask of SectorParameters Message.
[Command name]
MOD DOSPM
LST DOSPM
[Range and unit]
0104
[Operating range]
0104
[Recommended value]
Set the value as required.
[Setting tradeoff]
None
DOLTMOFF (Local Time Offset)
[Description]
AN sets the parameter as offset of local time offset system. The set parameter
value is in the unit of 30 minutes. The unit is automatically converted into minute
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
8/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 8 of 88
when the system delivers a message, indicating the symbol number in binary
supplemental code. The system adopts Greenwich Mean Time (GMT) to represent the
parameter. The East time zone adopts "GMT+ time" and West time zone adopts"GMT-time". For example, GMT+08:00andGMT-05:00.
[Type]
Um interface parameter, and sent in the LocalTimeOffset of SectorParameter
Message.
[Command name]
MOD DOSPM
LST DOSPM
[Range and unit]
063 (corresponding to -32 31), in the unit of 30 minutes
[Operating range]
063
[Recommended value]
Refer to time zone setting of system. Default value is set to 48, that is, LF4848
(GMT+08:00)
[Setting tradeoff]
None
[Remarks]
The time offset settings of each time zone is shown below:
LF88(GMT-12:00) --GMT-12:00
LF1010(GMT-11:00)
LF1212(GMT-10:00)
LF1414(GMT-09:00)
LF1616(GMT-08:00)
LF1818(GMT-07:00)
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
9/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 9 of 88
LF2020(GMT-06:00)
LF2222(GMT-05:00)
LF2424(GMT-04:00)
LF2626(GMT-03:00)
LF2828(GMT-02:00)
LF3030(GMT-01:00) --GMT 01:00
LF3232(GMT+00:00) --GMT
LF3434(GMT+01:00) -- GMT+01:00
LF3636(GMT+02:00)
LF3838(GMT+03:00)
LF4040(GMT+04:00)
LF4242(GMT+05:00)
LF4444(GMT+06:00)
LF4646(GMT+07:00)
LF4848(GMT+08:00)
LF5050(GMT+09:00)
LF5252(GMT+10:00)
LF5454(GMT+11:00)
LF5656(GMT+12:00) -- GMT + 12:00
DOREDIRECTAT (Redirection Identification)
[Description]
Refer to access network redirection.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
10/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 10 of 88
If AN redirects all the ATs to enable them to leave the AN, set the filed to 1 (YES).
Otherwise, set the filed to 0 (NO), indicating no support of AT redirection.
[Type]
Um interface parameter, and sent in the Redirect of QuickConfig Message.
[Command name]
MOD DOQCM
LST DOQCM
[Range and unit]
YES (redirection)/NO (non-redirection)
[Operating range]
NO---Do not support AT redirection.
[Recommended value]
NO
[Setting tradeoff]
None
COLORCODE (Color Code)
[Description]
Refer to color code corresponding to EV-DO carrier determined by [Cell ID], [Sector
ID] and [Carrier ID]. Color code identifies a subnet.
[Type]
Um interface parameter, and sent in the ColorCode field of QuickConfig Message.
[Command name]
MOD DOQCM
LST DOQCM
[Range and unit]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
11/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 11 of 88
0255
[Operating range]
0255
[Recommended value]
Set the value as required and default the value to 0.
[Setting tradeoff]
None
[Remarks]
ClolorCode is unique in the local office and varies with subnet ID. Plan the
multiplexing of color code. UATI high 8bit is the color code of Sector. The AN (BSC)
should contain a color code table, recording the color code of neighbor sector and
neighbor AN for each color code. After AT removes to new AN, determine the original
AN based on oldUATI reported by AT.
Figure 2-1 Color code area
SECTORID128 (SECTOR ID128)
[Description]
Refer to unique identification of a sector carrier determined by [Cell ID], [Sector ID]
and [Carrier ID] and the value is set to 128bit.
[Type]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
12/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 12 of 88
Um interface parameter, and sent in the SectorID field of SectorParameters
Message.
[Command name]
LST DOQCM
[Range and unit]
Refer to hex with no more than 32 digits starting with 0x
[Operating range]
Refer to hex with no more than 32 digits starting with 0x
[Recommended value]
None
[Setting tradeoff]
None
[Remarks]
SectorID128 SectorID104+SectorID24ColorCode+SectorID24
On the maintenance console, set SECTORID128 based on high 104bit
(SECTORID104) and low 24bit (SECTORID24).
SECTORID104 (SECTOR ID104)
[Description]
Refer to high 104 bit of SECTORID128
[Type]
Um interface parameter, and sent in the SectorID field in the SectorParameters
Message.
[Command name]
ADD DOCS
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
13/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 13 of 88
RMV DOCS
MOD DOCS
LST DOCS
[Range and unit]
Refer to hex with no less than 32 digits starting with 0x
[Operating range]
Refer to hex with no less than 32 digits starting with 0x
[Recommended value]
None
[Setting tradeoff]
None
SECTORID24 (SECTOR ID24)
[Description]
Refer to low 24bit of SECTORID128
[Type]
Um interface parameter, and sent in SectorID field of SectorParameters Message.
[Command name]
MOD DOQCM
LST DOQCM
[Range and unit]
Refer to hex with no less than 32 digits starting with 0x
[Operating range]
Refer to hex with no less than 32 digits starting with 0x
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
14/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 14 of 88
[Recommended value]
None
[Setting tradeoff]
None
SECTOR_GAIN (Sector Gain)
[Description]
Set the baseband gain to control the attenuation, in the unit of dB. The modified
parameter takes effect after the reset of EVDO channel board (BECM).
[Type]
Internal parameter of BTS
[Command name]
MOD CDMACH
LST CDMACH
[Range and unit]
04095
[Operating range]
5003200
[Recommended value]
3000
[Setting tradeoff]
Set the value based on actual output power. The mapping between setting value and
actual transmit power: P = 20*log (SECTOR_GAIN / 3000) + 43 - TX_GAIN (dBm).
You can calculate the following table base on this formula. Currently, it is
recommended to use TX_GAIN and external attenuator instead of modifying BTS
gain to change forward output power.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
15/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 15 of 88
Table 2-1 Mapping between sector gain and output power
Sector gain Output power (dBm)
3000 43
2500 41.4
2000 39.5
1500 37
1000 33.5
500 27.3
[Remarks]
To restrict the output power, modify RF gain first and then baseband gain.
To change forward output power, adjust RF gain first.
2.2. Control Channel Parameters
CCHRATE (Control Channel Rate)
[Description]
Refer to the settings of control channel rate.
The MACIndex comparison when MAC channel and preamble are used is shown in 0:
Table 2-2 MACIndex Comparison
MACIndex Use MAC channel or not Use Preamble or not
0 and 1 NO NO
2 NO Control channel at the
rate of 76.8kbps
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
16/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 16 of 88
3 NO Control channel at the
rate of 38.4kbps
4 RA channel NO
563 Used for RPC channel
and DRCLock channel
transmission
Used for forward
traffic channel
transmission
[Type]
System parameter
[Command name]
MOD DOCCHP
LST DOCCHP
[Range and unit]
76.8kbps/38.4kbps
[Operating range]
76.8kbps/38.4kbps
[Recommended value]
76.8kbps(default value: 38.4kbps)
[Setting tradeoff]
If the control channel rate is high, the timeslots occupied for sending control
channel capsule, increase the control channel and traffic channel capacity but
decrease the coverage area of control channel.
2.3. Neighbor AN Parameters
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
17/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 17 of 88
NBRANID (IP Address of Neighbor AN)
[Description]
Add IP address of neighbor AN
[Type]
Internal parameter
[Command name]
ADD DONBRAN
RMV DONBRAN
MOD DONBRAN
LST DONBRAN
[Range and unit]
0.0.0.0255.255.255.255
[Operating range]
0.0.0.0255.255.255.255
[Recommended value]
Set the value as required.
[Setting tradeoff]
None
NBRCOLORCODE (Color Code of Neighbor AN)
[Description]
Add the color code of neighbor AN.
The color code identifies different subnets, and one PCF configures a color code.
[Type]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
18/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 18 of 88
Internal parameter
[Command name]
ADD DONBRAN
RMV DONBRAN
MOD DONBRAN
LST DONBRAN
[Range and unit]
0255
[Operating range]
0255
[Recommended value]
Set the value as required.
[Setting tradeoff]
None
NBRSID104 (SECTORID104 of Neighbor AN)
[Description]
Modify new [Sector ID] value of neighbor AN determined by [IP Address of Neighbor
AN] and [Color Code of Neighbor AN].
[Type]
Internal parameter
[Command name]
ADD DONBRAN
RMV DONBRAN
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
19/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 19 of 88
C
MOD DONBRAN
LST DONBRAN
[Range and unit]
Refer to hex with no more than 32 digits starting with 0x
[Operating range]
Refer to hex with no more than 32 digits starting with 0x
[Recommended value]
Set the value as required
[Setting tradeoff]
None
hapter 3 Access Parameters
ACYCLEDURATION (Access Channel Probe Period)
[Description]
Mobile station sends a new access probe when system time T is multiples of access
channel period. The parameter is of carrier class. The access probe starts only at T
satisfying the following condition:
T mode AccessCycleDuration = 0
Wherein, T is the system time, in the unit of timeslot.
[Type]
Um interface parameter, and sent in the AccessCycleDuration filed of Access
Parameters Message.
[Command name]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
20/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 20 of 88
MOD DOAPM
LST DOAPM
[Range and unit]
8, 16, 32, 64, or 128 (unit: timeslot)
[Operating range]
8, 16, 32, 64, or 128timeslots
[Recommended value]
64 timeslots
[Setting tradeoff]
If the parameter is set to a small value, reduce the time of access probe and increase
access channel capacity but increase access collision probability and reduce access
success ratio.
PRBLEN (Access Probe Preamble Frame Length)
[Description]
[PRBLEN] and [CAPSULELENMAX] define the structure of access probe in the
EVDO and the parameter is of carrier class. As shown in 0, pilot (I-channel) is enabled
first and functions as preamble in each access probe and probe data (Q-channel) is
enabled after [PreambleLength] frame (that is, PreambleLength16 timeslots) to
reach [CapsuleLengthMax (access probe preamble frame length)]16 timeslots.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
21/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 21 of 88
Figure 3-1 Access probe structure
[Type]
Um interface parameter, and sent in the PreambleLength field of Access
Parameters Message.
[Command name]
MOD DOAPM
LST DOAPM
[Range and unit]
17(unit: frame, that is, 16 timeslots)
[Operating range]
17
[Recommended value]
2
[Setting tradeoff]
If the parameter is set to a large value, increase the probability that AN detects
access probe but increase the time of access probe success and reduce access
channel capacity.
If the parameter is set to a small value, AN may be unable to detect successfully
access probe. The parameter setting must be related to access search window and
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
22/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 22 of 88
their mapping is shown in 0. The access window is related to coverage radius of
sector.
Table 3-1 Mapping between PreambleLength and access window size
CAPSULELENMAX (Max. Capsule Length of Access Channel)
[Description]
The parameter value is the length of the maximum capsule carrying probe data and
the parameter is of carrier class.
[Type]
Um interface parameter, and sent in the CapsuleLenghtMax field of Access
Parameters Message.
[Command name]
MOD DOAPM
LST DOAPM
[Range and unit]
27 (unit: frame, that is, 16 timeslots)
[Operating range]
27 (unit: frame, that is, 16 timeslots)
[Recommended value]
2
[Setting tradeoff]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
23/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 23 of 88
If the parameter is set to a small value, fail to carry large data capsule of access
channel message but reduce access probe time and increase access channel
capacity.
[Remarks]
The access channel long code mask of EVDO is also related to the system time for
access probe transmission, besides, ColorCode and SectorID. The system time is the
first timeslot of access probe preamble. Transmit also the pilot while transmitting data
capsule.
PERSISTENCE0 (Persistence Vector 0)
PERSISTENCE1 (Persistence Vector 1)
PERSISTENCE2 (Persistence Vector 2)
PERSISTENCE3 (Persistence Vector 3)
[Description]
This group of parameters is used for setting. When the type-0, 1, 2, or 3 AT
performs persistence detection (PD) before sending the first probe of a probe
sequence, use the APersistence value respectively.
The AT determines persistence probability and carrier-class based on
APersistence value. [APersistence i] value is sent to AT at (i +1) times of
APeristence field of AccessParameters Message.
If AT does not define type, use i = 0, corresponding to non-urgent AT. If the
vector value n =0x3F, the persistence probability p =0. If n is unequal to 0x3F,
p=2^(-n/4). (For details, see C.S0024-0_v4.0)
[Type]
Um interface parameter, and sent in the APersistence field of Access Parameters
Message.
[Command name]
MOD DOAPM
LST DOAPM
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
24/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 24 of 88
[Range and unit]
Refer to hex with no more than 2 digits starting with 0x (maximum value: 0x3F)
[Operating range]
0x000x3F
[Recommended value]
1 (default value: 0x00)
[Setting tradeoff]
If the persistence vector is set to a large value, reduce the probability of PD and
prolong the time for sending access probe, but reduce the probability of access probe
collision.
Set persistence vector to a small value because of small load during the initial
stage of network construction to reduce access duration. Increase the value because
of the increment of network access load to reduce access collision and ensure access
success ratio.
[Remarks]
The AT must perform PD before sending the first probe of sequence. Generate
random number x (0< x< 1) distributed equally to compare with persistence probability
p.
If x< p, the PD succeeds. If successful PDs or PD failures are more than 4/p, AT
sends the first probe of sequence within the access channel period.
If p is unequal to 0, AT repeats above PDs starting from next access channel
period.
If p = 0, access is unavailable for the AT.
OLOOPADJUST (AT Open-loop Power Estimation)
[Description]
Refer to the reverse nominal power used in the open-loop power estimation by the
AT, in the unit of -1dB. The parameter is of carrier class. AT uses the parameter to
estimate the average output power of pilot channel open-loop X0 while accessing the
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
25/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 25 of 88
probe. The X0 ranges from -6dB to +6dB and also from -9dB to =9dB of the
following formula:
X 0 = - Received average power (dBm) + OpenLoopAdjust (AT
open-loop power estimation) + ProbeInitialAdjust (open-loop power
estimation adjustment factor)
[Type]
Um interface parameter, and sent in the OpenLoopAjust field of Access Parameters
Message. The value used by AT is -1 times of the value in the filed.
[Command name]
MOD DOAPM
LST DOAPM
[Range and unit]
0255 (unit: -1dB)
[Operating range]
0255
[Recommended value]
85
[Setting tradeoff]
If the parameter is set to a small value, increase the power of open-loop power
estimation and reduce the time for successful AT access, but add reverse transmit
power of AT to increase reverse interference of system.
If the parameter is set to a large value, AT accesses the system after several
probes.
[Remarks]
Factors affecting OpenLoopAdjust are shown in 0:
Table 3-2 Factors affecting OpenLoopAdjust
Factors Mark Value Remarks
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
26/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 26 of 88
BTS Transmit Power Ptx (bts) 10W = 40dBm
BTS Noise Figure (noise
coefficient)
NF (bts) 5dB
Cell Loading (sector reverse
load)
Lc 50% Not depend on link
Desired Total RL SINR
(-26dB/antenna)
Ecp/Nt -26dB/antenna
Ior/Ioc C1 1
No/Ior C2 1
Cell Thermal Noise NoW(bts) -113dBm/Hz
OpenLoopAdjust k 83.2 -174+
10*log10(1.23MHz
)
Wherein, k = -(Ecp/Nt + Ptx(ap) + NF(ap) + 10*log10(1+c1+c2) + NoW(ap)
- 10*log10(1-L(ap)))
PRBINIADJUST (Open Loop Power Estimation Adjustment Factor)
[Description]
The parameter and [AT open-loop power estimation] estimate the average open-loop
output power. The parameter is of carrier class. For details, see [OLOOPADJUST]
[Type]
Um interface parameter, and sent in the ProbeInitialAdjust field of Access
Parameters Message.
[Command name]
MOD DOAPM
LST DOAPM
[Range and unit]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
27/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 27 of 88
-16 15 (unit:: dB)
[Operating range]
-1615
[Recommended value]
0
[Setting tradeoff]
If the parameter is set to a large value, impact on the reverse capacity to cause
large power redundancy.
If the parameter is set to a small value, the MS accesses the system after several
probes to prolong the MS access time and even result in the access failure.
[Remarks]
OpenLoopAjust and ProbeInitialAdjust are common data of access channel MAC
protocol, and OpenLoopAjust+ ProbeInitialAdjust ranges from -81dB to -66dB for
frequency band type 0, 2, 3, 5, or 7 and from -100dB to -69dB for frequency band type
1, 4, or 6.
PRBNUMSTEP (Number of Max. Access Probe)
[Description]
Refer to the max. access probe number of single access probe sequence and the
parameter is of carrier class. 0shows the components of access probe sequence.
Figure 3-2 Access process
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
28/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 28 of 88
Wherein, Np refers to max. access probe number in the probe sequence
and Ns refers to max. probe sequence number of an access attempt.
[Type]
Um interface parameter, and sent in the ProbeNumStep field of Access Parameters
Message.
[Command name]
MOD DOAPM
LST DOAPM
[Range and unit]
115 (unit: number)
[Operating range]
515
[Recommended value]
15
[Setting tradeoff]
The larger the parameter value, the more the probability for successful access
probe sequence. But increase the interference of reverse link, because the failed
access may be caused by collision. If the access fails, the interval for the origination of
call attempt will be longer.
[Remarks]
The parameter is considered together with [Probe Power UP Step (PowerStep)].When PWR_STEP is set to a smaller value, NUM_STEP should be set to a larger
value. If PWR_STEP is set to a larger value, NUM_STEP can be set to a smaller
value.
PWRSTEP (Probe Power UP Step)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
29/88
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
30/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 30 of 88
Figure 3-3 Access process
[Type]
Um interface parameter, and defined in the ProbeSequenceMax of
InitialConfiguration feature table when access channel configures feature negotiation.
The protocol default values of configuration features are shown in Table 3-3:
Table 3-3 Default values of InitialConfiguration features
[Command name]
MOD DOMCNP
LST DOMCNP
[Range and unit]
115
[Operating range]
115
[Recommended value]
3
[Setting tradeoff]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
31/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 31 of 88
If the parameter is set to a large value, increase the access success ratio but affect
access channel capacity.
If the parameter is set to a small value (for example, 1), the sequence cannot be
retransmitted. The radio environment fluctuates. If the first access fails, the radio
environment may get better in the case of the second times of access.
Set the parameter to 2.
PRBBKOFF (inter-probe backoff)
[Description]
Used to calculate the start time of next access probe and the parameter is of carrier
class. The AN should set the parameter as the upper threshold of backoff range used
by AT during the access probe.
[Type]
Um interface parameter, and defined in the ProbeBackoff field of
InitialConfiguraiton feature table when access channel configures feature
negotiation.
[Command name]
MOD DOMCNP
LST DOMCNP
[Range and unit]
015 (unit: AccessCycleDuration)
[Operating range]
015
[Recommended value]
4
[Setting tradeoff]
If the parameter is set to a large value, delay the MS access in the case of many
access attempt probes but reduce access load.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
32/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 32 of 88
If the parameter is set to a small value, increase the probability of probe collision in
the case of high system load.
PRBSEQ_BKOFF (inter-probe sequence backoff)
[Description]
The parameter is of carrier class. The AN should set the parameter as the upper
threshold of backoff range used by AT during the probe sequence.
[Type]
Um interface parameter, and defined in the ProbeSequenceBackoff field of
InitialConfiguration feature table when access channel configures feature
negotiation.
[Command name]
MOD DOMCNP
LST DOMCNP
[Range and unit]
015 (unit: AccessCycleDuration)
[Operating range]
015
[Recommended value]
8
[Setting tradeoff]
See [PRBBKOFF].
[Remarks]
Refer to inter-sequence backoff. AT generates a positive pseudorandom number k
between 0 and ProbeSequenceBackoff , and AT should wait for S = (k
AccessCycleDuration) + TACMPATProbeTimeout timeslots after the last probe in the former
sequence.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
33/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 33 of 88
ACCDATAOFF (Access Channel Nominal Power Offset)
[Description]
The parameter is of carrier class, and identifies nominal power offset of access
channel and pilot channel, in the unit of 0.5db.
[Type]
Um interface parameter, and defined in the DataOffsetNom filed of
PowerParameters feature table in the default access channel MAC protocol
configuration features.
In the Um interface message, the parameter refers to binary supplemental code value,in the unit of 0.5dB.
[Command name]
MOD DOMCNP
LST DOMCNP
[Range and unit]
-8 7 (unit: 0.5dB)
[Operating range]
-8 7
[Recommended value]
0
[Setting tradeoff]
If the parameter is set to a large value, facilitate successful AT access to shorten
access time, but increase reverse power consumption of AT and reverse interference
of system and reduce reverse capacity of system.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
34/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 34 of 88
C hapter 4 Power Control Parameters
4.1 Power Control Parameters
REVPER (Reverse Target PER)
[Description]
Refer to convergence target of reverse PER under the normal condition.
[Type]
Internal parameter
[Command name]
MOD DOPCPP
LST DORRMP
[Range and unit]
199 (unit: %)
[Operating range]
110
[Recommended value]
1
[Setting tradeoff]
To set target PER, find a balance between data transfer performance and reverse
transmit power and system load.
If target PER is set to a smaller value, the reverse transmission rate is higher, so
does for the transmit power of MS to increase also the reverse load of system.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
35/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 35 of 88
MINPCT (Min. PCT)
[Description]
Refer to the minimum PCT value adjusted by BSC outer loop power control.
[Type]
Internal parameter
[Command name]
MOD DOPCPP
LST DORRMP
[Range and unit]
-28672 -12416 (unit: 1/1024dB)
[Operating range]
-28672 -12416
[Recommended value]
-22528 (-22dB), and default 21504(-21dB)
[Setting tradeoff]
Converge the same target PER and PCT value varies with the link condition, such
as, change of soft handoff branch. Therefore, a dynamical change range exists in the
PCT and defined by the parameter and [MAXPCT].
If the parameter is set to a small value, the dynamical change range of PCT is
larger. For the good reverse link, save reverse transmit power of AT and reduce
reverse load of system. For the instant fading, the power cannot increase in time to
affect the transmission performance of user.
MAXPCT (Max. PCT)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
36/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 36 of 88
Refer to the maximum PCT value adjusted by BSC outer loop power control. The
parameter and [MINPCT] define the dynamical change range of PCT. The parameter
value is larger than that of [MINPCT]
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
-28672 -12416 (unit: 1/1024dB)
[Operating range]
-28672 -12416
[Recommended value]
-19456 (-19dB)
[Setting tradeoff]
A larger value facilitates the performance, especially for worse radio environment, but
increase reverse transmit power and decrease reverse capacity of system.
INITPCT (Initial PCT)
[Description]
BSC adjusts the PCT values from time to time starting at initial PCT value. The
parameter value must be one between maximum PCT and minimum PCT.
[Type]
Internal parameter
[Command name]
MOD DOPCPP
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
37/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 37 of 88
LST DORRMP
[Range and unit]
-28672 -12416 (Unit: 1/1024dB)
[Operating range]
-28672 -12416
[Recommended value]
-21504 (-21.0dB)
[Setting tradeoff]
A larger value can ensure the performance during the call setup. For the data service,
the data transfer is very important. Therefore, the initial PCT can be set to a larger
value.
NORMALGFRAMED (PCT DOWN Step of Good Frame in Normal Condition)
[Description]
Refer to the PCT DOWN Step of good frame in the Normal state.
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
0255 (unit: 1/1024dB)
[Operating range]
0255
[Recommended value]
5
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
38/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 38 of 88
[Setting tradeoff]
To set the parameter, find a balance between power control accuracy and timeliness.
[Remarks]
To ensure that PER converges target setting value in the Normal state, the PCT
UP Step of bad frame and PCT DOWN Step of good frame must be in an appropriate
proportional relation.
If the call is always in NORMAL state and target PER is 1%, the total DOWN
Steps of good frames must equal total UP Steps of bad frames within 100 frames toensure 1% of PER. The following formula must be met:
PER / (1-PER) = PCT DOWN Step of good frames in Normal state/PCT UP Step of
bad frames in Normal state
When the algorithm is implemented, calculate automatically [PCT UP Step of bad
frames in Normal state] from [PCT DOWN Step of good frames in Normal state]
and PER based on the above formula. Therefore, you can query [PCT UP Step ofbad frames in Normal state], instead modify it.
NORMALBRAMEU (PCT UP Step of Bad Frame in Normal State)
[Description]
Refer to PCT UP Step of bad frames in Normal state.
[Type]
Internal parameter
[Command name]
LST DORRMP
[Range and unit]
0255 (unit: 1/1024dB)
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
39/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 39 of 88
[Operating range]
0255
[Recommended value]
495
[Setting tradeoff]
None
[Remarks]
When the algorithm is implemented, calculate automatically [PCT UP Step of bad
frames in Normal state] from [PCT DOWN Step of good frames in Normal state]
and PER based on the formula (PCT UP Step of bad frames in Normal state = PCT
DOWN Step of good frames in Normal state/[ PER / (1-PER)]. Therefore, you can
query [PCT UP Step of bad frame in Normal state], instead modify it.
NODATAIFRAMEU (PCT UP Step of IDLE Frame in No Data State)
[Description]
Refer to PCT UP Step of IDLE frames in No Data state. If frames are not received
within continuous [NUMIDLEFORNODATA] time, transit the connection state to NO
DATA state.
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
0255 (unit: 1/1024dB)
[Operating range]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
40/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 40 of 88
0255
[Recommended value]
40
[Setting tradeoff]
The parameter value should be less than: UP Step of bad in Normal state = PCT
DOWN Step of good frame * (1-PER)/ PER
NODATAMAXINC (Max. PCT Increment in No Data State)
[Description]
Refer to the max. increment of calculated PCT in NoData state, that is, the max. PCT
increment during the time transited to NoData state and out of NoData state.
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
01000 (unit: 1/1024dB)
[Operating range]
01000
[Recommended value]
500
[Setting tradeoff]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
41/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 41 of 88
A larger value can back off link change in NoData state to ensure the
performance in the case of data transfer but may bring about excessive backoff to add
the power consumption.
To set the parameter, find a balance between power consumption and
transmission performance.
NODATAMAX (Max. PCT in NoData State)
[Description]
Refer to the maximum PCT value in NoData state. The parameter and [Max. PCT
increment in NoData state] prevent the excessive PCT increment in NoData state.
In the NoData state, each PCT increment should not be greater than [maximum PCT
increment in NoData state] and the set value. In addition, the parameter must be
less than [MAXPCT]
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
-28672 -12416 (unit: 1/1024dB)
[Operating range]
-28672 -12416
[Recommended value]
-21504 (-21.0dB)
[Setting tradeoff]
See [NODATAMAXINC]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
42/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 42 of 88
DATAGFRAMED (PCT DOWN Step of Good Frame in DataStart state)
[Description]
Refer to the PCT Down Step of good frame in DataStart state. If current state is DATA
START and good frame is received, PCT decreases one step [DATAGFRAMED].
If bad frame is received, transit the state from DataStart to NORMAL and process the
bad frame based on that in NORMAL state.
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
0255 (unit: 1/1024dB)
[Operating range]
020 (unit: 1/1024dB)
[Recommended value]
5
[Setting tradeoff]
The value should not be greater than [NODATAMAXINC]
PCTMININCSTEP (Minimum Interval Frames for PCT UP Step)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
43/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 43 of 88
Refer to the interval frames between PCT UP Step of bad frame and PCT DOWN
Step of good frame in NORMAL state to avoid continuous bad capsule caused by
burst fading.
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
0255 (unit: frame)
[Operating range]
04
[Recommended value]
2
[Setting tradeoff]
An over-small value may bring about excessive power in the case of burst fading but
an overlarge value may enable power to increase slowly incapable of backing off fast
fading.
PCTMINCHANGE (Mini. Changed PCT Sent to Carrier)
[Description]
Refer to minimum changed PCT value. Because PCT accuracy (1/1024dB)
maintained by the BSC is far smaller than that (0.125dB) of outer loop value set by the
BTS, send command to BTS only when the absolute value between current PCT and
the former PCT when notifying BTS is less than [PCTMINCHANGE]. Otherwise,
maintain it at the BSC to avoid sending frequent commands to BTS.
[Type]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
44/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 44 of 88
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
0255 (unit: 0.125dB)
[Operating range]
1255, that is, 0.125dB 31.875dB
[Recommended value]
1, that is, 0.125dB
[Setting tradeoff]
A larger value enables PCT change scale to instable and inaccurate but reduces the
commands sent to BTS.
NUMIDLEFORNODATA (Number of IDLE Frames for NODATA State)
[Description]
Transit to NoData State after receiving continuously IDLE frames set by the parameter
[Type]
Internal parameter
[Command name]
MOD DOPCP
LST DORRMP
[Range and unit]
0255 (unit: frame)
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
45/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 45 of 88
[Operating range]
0255
[Recommended value]
100
[Setting tradeoff]
The larger the parameter value, the longer transited to NoData state. In this case,
increase the power consumption at the terminal and waste more system resources.
If an over-small value is set to the parameter, state transits frequently from
NODATA state to DATA to increase the processing load of system.
RTRAFDATAOFF (Reverse Traffic Channel Nominal Power Offset)
[Description]
Refer to nominal power offset of data/traffic channel in reverse link and the parameter
is of carrier class. The parameter identifies the nominal offset of data/traffic channel
power and pilot channel power in reverse link, in the unit of 0.5db.
[Type]
Um interface parameter, and defined in the DataOffsetNom filed of
PowerParameters feature table when the defaulted reverse traffic channel MAC
protocol configures negotiation. In the Um interface message, the field indicates
binary supplemental code value, in the unit of 0.5dB.
[Command name]
MOD DOMCNP
LST DOMCNP
[Range and unit]
-8 7 (unit: 0.5dB)
[Operating range]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
46/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 46 of 88
-8 7
[Recommended value]
0
[Setting tradeoff]
None
[Remarks]
Table 4-2 specifies data channel power related to pilot channel power. DataOffsetNom,
DataOffset9k6, DataOffset19k2, DataOffset38k4, DataOffset76k8 and
DataOffset153k6 are common data of reverse traffic channel protocol and also can be
defined in the case of feature negotiation configuration.
Table 4-2 Reverse data channel power
DataOffset9k6
DataOffset19k2
DataOffset38k4
DataOffset76k8
DataOffset153k6
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
47/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 47 of 88
Refer to the ratio of data channel power in the reverse link for the rate of
9.6/19.2/38.4/76.8/153.6 kbps to data channel nominal power in the reverse link for
the rates.
[Type]
Um interface parameter, and defined respectively in the DataOffset9k6 field,
DataOffset19k2 field, DataOffset38k4, DataOffset76k8 and DataOffset153k6
field of PowerParameters feature table in the configuration feature of defaulted
reverse traffic channel MAC protocol. In the Um interface message, the field indicates
binary supplemental code value, in the unit of 0.5dB.
[Command name]
Current version does not support dynamical configuration.
[Range and unit]
- 87 (unit: 0.5dB)
[Operating range]
-87
[Recommended value]
0
[Setting tradeoff]
None
RPCSTEP (Reverse Power Control Step)
[Description]
Refer to the size of power control step used by AT to control reverse link power. The
parameter sets the nominal change of average output power for each power control
bit.
[Type]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
48/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 48 of 88
Um interface parameter, and defined in the RPCStep filed of PowerParameters
feature table when defaulted reverse traffic channel MAC protocol configures features.
[Command name]
MOD DOMCNP
LST DOMCNP
[Range and unit]
0.5dB or1.0dB
In the Um interface message, coding code for the parameter is shown in table 4-3:
Table 4-3: Coding mode of RPCStep
[Operating range]
0.5dB and 1.0dB
[Recommended value]
1.0dB
[Setting tradeoff]
The smaller the step, the more accurate the power control bit, and the more stable
the transmit power of AT.
The larger the step, the timelier the power control, and the more dramatic the power
control change.
[Remarks]
None
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
49/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 49 of 88
C hapter 5 Handoff Parameters
5.1 Module Handoff Parameters
DRCLEN1BRANCH (DRCLength for Branch 1)
DRCLEN2BRANCH (DRCLength for Branch 2)
DRCLEN3BRANCH (DRCLength for Branch 3)
DRCLEN4BRANCH (DRCLength for Branch 4)
DRCLEN5BRANCH (DRCLength for Branch 5)
DRCLEN6BRANCH (DRCLength for Branch 6)
[Description]
Refer to the number of timeslots used by AT to transmit single DRC value when there
are1, 2, 3, 4, 5, or 6 soft handoff branches. The system determines DRCLength value
to AT based on branches of AT. If AT has sent its DRC to sector A within n timeslots
and specifies r transmission rate, AT should search the preambles from sector A with
the r transmission rate between n+ 1 and n+ DRCLength timeslots. Table 5-1
shows DRCLength coding.
Table 5-1 DRCLength coding
[Type]
Um interface parameter, and sent in the DRCLength field of
TrafficChannelAssignment Message.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
50/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 50 of 88
]
ge and unit]
, see Table 5-1 DRCLength coding.
rating range]
Set the par r branches
The recomm
Qualcomm
[Command name
MOD DOMPP
LST DOMPP
[Ran
03
For specific meaning
[Ope
03
[Recommended value]
ameter to 1 (2 timeslots) for branch 1and 2 (4 timeslots) for othe
ended value by Qualcomm is shown in Table 5-2:
Table 5-2 Default DRC length value of
[Se
rate of DRC to unable to be consistent with that of radio
env
the
t
andoff gain, add DRCLength to increase the reliability of DRC transmission.
tting tradeoff]
The larger the value, the higher reliability the transmission of DRC value, but the
lower the change
ironment.
The smaller the value, the less the retransmission times of DRC value, the lower
reliability the transmission of DRC value, but the faster the change rate of DRC.
The DRC value varies with the soft handoff number of AT active set. Because DRC
value has no soft handoff gain received at AN side, but reverse traffic channel has sof
h
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
51/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 51 of 88
RC Channel Gain for Branch 6)
[De
s from -9dB through +6dB.AT should
all the values within the range.
in the DRCChannelGain field of
nment Message.
-1812 (unit: m converts the value into binary supplemental
ing range]
lue]
[Se
RC transmission, but the larger
the effect on throughput of reverse link is.
DRCCHGAIN1 (DRC Channel Gain for Branch 1)
DRCCHGAIN2 (DRC Channel Gain for Branch 2)
DRCCHGAIN3 (DRC Channel Gain for Branch 3)
DRCCHGAIN4 (DRC Channel Gain for Branch 4)
DRCCHGAIN5 (DRC Channel Gain for Branch 5)
DRCCHGAIN6 (D
scription]
Refer to the ratio of DRC channel power level (in the case of transmission) to
reverse traffic pilot channel power level when the number of AT active set soft handoff
branch is 1, 2, 3, 4, 5, or 6. The parameter range
support
[Type]
Um interface parameter, and sent
TrafficChannelAssig
[Command name]
MOD DOMPP
LST DOMPP
[Range and unit]
0.5dB), and the syste
code.
[Operat
-1812
[Recommended va
Refer to Table 5-3
tting tradeoff]
The larger the value, the higher the reliability of D
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
52/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 52 of 88
The smaller the value, the less the effect on throughput of reverse link, and the
lower the reliability of DRC transmission. The parameter value varies with the number
of soft handoff branch.
Table 5-3 Qualcomm recommended values for different branches
ACKCHGAIN1 (Ack Channel Gain for Branch 1)
ACKCHGAIN2 (Ack Channel Gain for Branch 2)
ACKCHGAIN3 (Ack Channel Gain for Branch 3)
ACKCHGAIN4 (Ack Channel Gain for Branch 4)
ACKCHGAIN5 (Ack Channel Gain for Branch 5)
ACKCHGAIN6 (Ack Channel Gain for Branch 6)
[Description]
Refer to the ratio of ACK channel power level (in the case of transmission) to reverse
traffic/ pilot channel power level when there are 1, 2, 3, 4, 5, or 6 soft handoff
branches of AT active set. The parameter value ranges from -3dB through +6dB. AT
should support all the values within the range.
[Type]
Um interface parameter, and sent in the AckChannelGain field of
TrafficChannelAssignment Message.
[Command name]
MOD DOMPP
LST DOMPP
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
53/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 53 of 88
[Range and unit]
-612 (unit: 0.5dB)
[Operating range]
-612
[Recommended value]
6, that is, 3dB
[Setting tradeoff]
To set the parameter, concern the following:
Minimize the probability of ACK error and loss to not affect PER and forward
throughput dramatically.
The larger the value, the larger the effect on reverse capacity.
When the transmit power of AT is up to the maximum, AT disables ACK channel.
[Remarks]
AT uses the ACK sub-channel to notify whether AN has correctly received forward
traffic channel data capsule. If AT has been correctly demodulated, send ACK bit. If
not, send NAK bit.
After receiving ACK bit from AT, AN transmits a new capsule instead of current
one. The mechanism adjusts AT forward rate prediction to improve the system
performance.
5.2 Carrier Configuration Negotiation Handoff Parameters
PILOTADD (Pilot Good Available Threshold)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
54/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 54 of 88
If the pilot strength exceeds the parameter value, it can be added to the active set.
If the pilot strength of neighbor set or remaining set exceeds the threshold when AT is
in Connection state, send a RouteUpdate message.
[Type]
Um interface parameter, and defined in the PilotAdd field of
SetManagementSameChannelParameters feature table when route update protocol
configures negotiation. The protocol default value is set to 0x0e, corresponding to
-7dB.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
-630 (unit: 0.5dB)
[Operating range]
-630
[Recommended value]
-14
[Setting tradeoff]
If the value of this parameter is overlarge, the soft handoff threshold increases, so the
soft handoff area and the soft handoff ratio decrease. But the soft handoff may bedelayed to result in coverage dead zone. If the value is over-small, the soft handoff
threshold decreases, so the soft handoff area and the soft handoff ratio increase.
PILOTCMP (Pilot Compare Threshold)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
55/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 55 of 88
When a pilot of candidate set is the parameter higher than the pilot of active set, AT
sends a RouteUpdate message.
[Type]
Um interface parameter, and defined in the PilotCompare field of
SetManagementSameChannelParameters feature table when route update protocol
configures negotiation. The protocol default value is set to 5.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
-3231 (unit: 0.5dB). The Um interface is represented through binary supplemental
code.
[Operating range]
-3231
[Recommended value]
5
[Setting tradeoff]
If the parameter is over-small, the pilots in candidate set are easy to replace the
pilots in active set to result in ping-Pong handoff.
If the parameter is overlarge, the pilots in candidate set are difficult to replace the
pilots in active set so that AT is unable to obtain services on the best pilots in time.
PILOTDROP (Pilot Dropt Threshold)
[Description]
When the strength of pilot in active set or candidate set is less than the threshold, AT
starts a pilot deactivation timer. If the pilot strength is higher than PilotDrop before the
timer expires, restart and disable the timer.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
56/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 56 of 88
[Type]
Um interface parameter, and defined in the PilotDrop field of
SetManagementSameChannelParameters feature table when route update protocol
configures negotiation. The protocol sets the default value to 18.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
-630 (unit: 0.5dB). The Um interface is represented through binary supplemental
code.
[Operating range]
-630
[Recommended value]
-18
[Setting tradeoff]
If the parameter is overlarge, an available signal can be deleted from active set easily.
If the parameter is over-small, soft handoff threshold may decrease and a pilot in
active set is difficult to be deleted from active set.
PILOTDROPTIMER (Pilot Removal Timer Length)
[Description]
When the pilot strength in the AT active set or candidate set is lower than [pilot
minimum available threshold], AT starts the pilot removal timer through the value. If
the timer expires, and the pilots in the active set are processed, AT sends a
RouteUpdate message. If the pilots in the candidate set are processed, AT moves
the pilot to neighbor set.
[Type]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
57/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 57 of 88
Um interface parameter, and defined in the PilotDropTimer field of
SetManagementSameChannelParameters feature table when route update protocol
configures negotiation. The protocol sets the default value to 3. The timer codingmode is shown in Table 5-7:
Table 5-7 PilotDropTimer coding mode
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
015 and the parameter values on the maintenance console are listed in table.
[Operating range]
15
[Recommended value]
3, that is, 4s
[Setting tradeoff]
If the parameter value is overlarge, the pilot with a low strength in the active set
stays there for a long time.
If the parameter value is over-small, handoffs will frequently occur.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
58/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 58 of 88
NBRMAXAGE (Neighbor Set Max. AGE)
[Description]
This parameter defines the maximum life duration of pilots in the neighbor set.
The MS provides a counter for each pilot in the neighbor set. When the MS receives
the Neighbor List Update Message (NLUM), it increases the counters of the original
pilots in the neighbor set by one. If the counter of a pilot exceeds the parameter value,
the MS removes this pilot from the neighbor set.
If the parameter value is set to 0, each time the MS receives NLUM, the MS
removes all pilots in the original neighbor set so that the MS uses the contents in the
latest NLUM.
If the value is set to 2, when a pilot falls from the active set or candidate set back
to the neighbor set but there is no such pilot in two successive NLUMs, this pilot will
be removed from the neighbor set.
[Type]
Um interface parameter, and defined in the NeighborMaxAge field of
SetManagementSameChannelParameters feature table when route update protocol
configures negotiation. The protocol default value is set to 0.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
015
[Operating range]
015
[Recommended value]
0
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
59/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 59 of 88
PILOTINCREMENT (Pilot PN Sequence Increment)
[Description]
Refer to pilot PN sequence increment, in the unit of 64PN chips. AT uses the
parameter value to search remaining set. Set the parameter to the maximum gain
when all the PN sequences of neighbor access network are integer multiples of the
increment.
[Type]
Um interface parameter, and defined in the PilotIncrement filed ofSearchParameters feature table when route update protocol configures negotiation.
The protocol default value is set to 4. Table 5-8 shows the default values of the feature
table:
Table 5-8 Default values of SearchParameters
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
015
[Operating range]
015
[Recommended value]
4
[Setting tradeoff]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
60/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 60 of 88
The smaller the parameter value, the more the available pilot phase offset is. In
this case, the same-phase inter-pilot multiplexing distance increases to reduce the
interface of same-phase inter-pilot. At that time, the phase interval between differentpilots decreases to confuse the pilots.
The larger the parameter value, the less the available pilot phase offset is. In this
case, pilots in remaining set decreases, so does the time for MS to scan pilots. In
actual dynamic environment, the probability for one strong pilot signal loss decreases.
At that time, available pilot phase offset decreases, so does for same-phase inter-pilot
multiplexing distance, and the interference of same-phase inter-pilot increases.
In addition, the parameter determines the maximum value of SRCH_WIN_N and
SRCH_WIN_R.
SRCHWINA (Search Window Size for Active Set and Candidate Set)
[Description]
Corresponding AT is used for search window size for active set and candidate set.
When the MS searches pilots in the active and candidate sets, set their first arriving
available multi-paths as their search centers respectively. Therefore, this parameter is
only related to the multi-paths of pilots, instead of the relative propagation delay
between pilots.
[Type]
Um interface parameter, and defined in the SearchWindowActive field of
SearchParameters feature table when route update protocol configures negotiation.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
015
The mapping between coding mode and search window size is shown in Table 5-9:
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
61/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 61 of 88
Table 5-9 Search window size coding
[Operating range]
015
[Recommended value]
8, that is, 60chips
[Setting tradeoff]
According to the local propagation delay, the pilot signals after the propagation
delay should fall into the search window of the active set. If the parameter value of this
is over-small, some useful signals in the active set may fall beyond the search window
to affect seriously link quality.
If the parameter value of this is overlarge, some irrelevant signals (PN confusion)
may also fall into the search window, so the link quality may also be affected. A large
search window also slows down the MS search neighbor pilots so that the handoff
could not be triggered in time. Thus the system performance decreases
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
62/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 62 of 88
SRCHWINN (Search Window Size for Neighbor Set)
[Description]
AT uses the search window size here to search for carriers in neighbor set. Therefore,
this parameter is related to the multi-paths of neighbor pilots and relative propagation
delay from neighbor pilot to the reference pilot.
[Type]
Um interface parameter, and defined in the SearchWindowNeighbor field of
SearchParameters feature table when route update protocol configures negotiation.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
015
The mapping between coding mode and search window size is shown in Table 5-9:
[Operating range]
015
[Recommended value]
10, that is, 100chips
[Setting tradeoff]
The larger the parameter value, the longer the search takes. But the pilot branches
are missed so the probability unable to add the neighbor pilots to active set is less.
SRCHWINR (Search Window Size for Remaining Set)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
63/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 63 of 88
Search windows size for remaining set, AT uses the search window size to search for
carrier in remaining set.
[Type]
Um interface parameter, and defined in the SearchWindowRemaining field of
SearchParameters feature table when route update protocol configures negotiation.
The protocol default value is set to 10.
[Command name]
MOD DOCNP
LST DOCNP
[Range and unit]
015
For the coding code and search window size, see Table 5-9.
[Operating range]
015
[Recommended value]
10, that is, 100chips
[Setting tradeoff]
If the parameter value is set over-small, some useful pilots in the remaining set may
be missed. As a result, the function of BSC detecting the absent configuration of
neighbor cell can not be utilized fully. If the parameter value is overlarge, the MS may
search other irrelevant signals, and the time that the MS searches pilots in the
remaining set increases, so the search speed of the MS slows down.
[Remarks]
To use missed neighbor cell detection function to check whether missed neighbor
cells exist in the system, set the parameter.
While MS searches for remaining set pilots, all the remaining set PNs are integer
multiples of PILOT_INC. therefore, ensure that all the PNs in the system are integer
multiples of PILOT_INC while planning PN.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
64/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 64 of 88
[Partner conditions]
MOT LUCENT
Not detailed 0
5.3 Sector Carrier Idle Handoff Parameters
SRCHWIN (Search Window Size)
[Description]
Refer to search window size while searing for neighbor carrier. The larger the
parameter value, the longer the search takes, but the less the possibility pilot is
missed.
[Type]
Um interface parameter, and sent in the NeighborSearchWindowSize field of
SectorParameters message.
[Command name]
MOD NBRPARA
LST NBRPARA
[Range and unit]
4452 (unit: chip). The parameter values on maintenance console are listed in table.
[Operating range]
4452
[Recommended value]
60
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
65/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 65 of 88
SRCHOFFS (Search Window Offset)
[Description]
Refer to PN code offset determined by [Neighbor Carrier] relative to search window
center while searching for neighbor carrier.
[Type]
Um interface parameter, and sent in NeighborSearchWindowOffset field of
SectorParameters message.
[Command name]
MOD NBRPARA
LST NBRPARA
[Range and unit]
06
The parameter values on maintenance console list all the Offset values in tables. For
the mapping between the value and search window offset, see Table 5-10.
[Operating range]
06
[Recommended value]
0
[Setting tradeoff]
The parameter and PN offset determine the center position of search window.
SRCHWININC (Search Window Size Included)
[Description]
Whether neighbor sector list message includes idle handoff search window size
If yes, use the [Search window size]. If not, use the negotiated parameter.
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
66/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 66 of 88
[Type]
Um interface parameter, and sent in the NeighborSearchWindowSizeIncluded field
of SectorParameters message.
[Command name]
MOD NBRPARA
LST NBRPARA
[Range and unit]
YES/NO
[Operating range]
YES/NO
[Recommended value]
NO
[Setting tradeoff]
None
SRCHOFFSINC (Search Window Offset Included)
[Description]
Whether neighbor list message includes idle handoff search window offset. If yes, use
the [Search window offset]. If not, use the default search window offset.
[Type]
Um interface parameter, and sent in the NeighborSearchWindowOffsetIncluded field
of SectorParameters message.
[Command name]
MOD NBRPARA
LST NBRPARA
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
67/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 67 of 88
[Range and unit]
YES/NO
[Operating range]
YES/NO
[Recommended value]
NO
[Setting tradeoff]
None
5.4 Same-frequency Neighbor Handoff Parameters
CCDMACH (Center Carrier)
[Description]
Refer to the carrier which the same-frequency carrier neighbor relation is to be
modified. BTS ID-Cell ID-Sector ID-- Carrier, and determine PN code of the carrier.
[Command name]
MOD DOSFNBRP
LST DOSFNBRP
[Recommended value]
Set the value as required.
NBRCDMACH (Same-frequency Neighbor Carrier)
[Description]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
68/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 68 of 88
Refer to the same-frequency neighbor carrier which center carrier is to be modified.
BTS ID-Cell ID- Sector ID- Carrier and determine PN code of same-frequency
neighbor carrier.
[Type]
Um interface parameter, and neighbor list is sent in the NeighborList Message.
[Command name]
MOD DOSFNBRP
LST DOSFNBRP
[Recommended value]
Set the value as required
NSRCHWININC (Search Window Size of Neighbor Set Branch Included)
[Description]
Whether neighbor sector list message includes neighbor search window size
If yes, use the [Search window size of neighbor set branch]. If not, use negotiated
parameter.
[Type]
Um interface parameter, and sent in the SearchWindowSizeIncluded field of
NeighborList Message.
[Command name]
MOD DOSFNBRP
LST DOSFNBRP
[Range and unit]
YES/NO
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
69/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 69 of 88
[Operating range]
YES/NO
[Recommended value]
NO
NSRCHWINSIZE (Search Window Size of Neighbor Set Branch)
[Description]
Neighbor set branch search is performed PN code range determined by
[Same-frequency Neighbor Carrier] and the range is search window. If
SearchWindowSizeIncluded is set to 0 , it does not take effect to set the parameter.
If SearchWindowSizeIncluded is set to 1, corresponding AT is search window size
used by neighbor pilot.
[Type]
Um interface parameter, and sent in the SearchWindowSize field of NeighborListMessage. When the filed occurs for n times, correspondingly, PilotPN occurs for
ntimes.
[Command name]
MOD DOSFNBRP
LST DOSFNBRP
[Range and unit]
015
The values on the maintenance console list the optional chips number in table. The
mapping between the value of Um interface message and search window size is
shown in Table 5-9:
[Operating range]
015
[Recommended value]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
70/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 70 of 88
8, that is, 60 chips
[Setting tradeoff]
According to the mulipath of neighbor pilot and the propagation delay size from
neighbor pilot to reference pilot, set the parameter to ensure that neighbor pilot signals
are located within the neighbor set search window that sets the earliest arriving
multipath components of reference pilot as time reference and PN offset of neighbor
pilot as search center.
If the parameter value is over-small, neighbor pilot signals may be located beyond
the search window to miss some neighbor pilots so that neighbor set pilots cannot be
added to active set and normal soft handoff fails.
If the parameter value is overlarge, the time for MS to search for each neighbor
pilot may increase to slow down the speed for searching neighbor pilot and miss the
best soft handoff opportunity to affect the handoff performance potentially.
NSRCHWINOFFSETINC (Search Window Offset of Neighbor Set Branch
Included)
[Description]
Whether neighbor sector list message includes search window offset of neighbor set
branch. If yes, use the [Search Window Offset of Neighbor Set Branch]. If no, use the
default [Search Window Offset of Neighbor Set Branch].
[Type]
Um interface parameter, and sent in the SearchWindowsOffset field of NeighborList
Message.
[Command name]
MOD DOSFNBRP
LST DOSFNBRP
[Range and unit]
YES/NO
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
71/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 71 of 88
[Operating range]
YES/NO
[Recommended value]
NO
[Setting tradeoff]
None
NSRCHWINOFFSET (Search Window Offset of Neighbor Set Branch)
[Description]
Refer to PN code offset determined by [Same-frequency Neighbor Carrier] relative to
search window center while searing for neighbor carrier.
[Type]
Um interface parameter, and sent in the SearchWindowsOffset field of NeighborList
Message.
[Command name]
MOD DOSFNBRP
LST DOSFNBRP
[Range and unit]
07
The parameter values on the maintenance console list all the Offset values in tables.
The mapping between value of Um interface message and search window offset is
shown in Table 5-10:
Table 5-10 Search window offset coding
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
72/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 72 of 88
[Operating range]
07
[Recommended value]
0
[Setting tradeoff]
The parameter and PN offset determine the center position of search window.
5.5 Algorithm Module Handoff Parameters
ANHOSWITCH (AN Assisted Inter-AN Handoff Switch)
[Description]
Whether to allow AN assisted inter-AN handoff. [Compare Difference of AN
Assisted Inter-AN Handoff] takes effect when the parameter is set to ON1.
[Type]
Internal parameter
[Command name]
MOD DORRMMP
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
73/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 73 of 88
LST DORRMMP
[Range and unit]
ON1/OFF0
[Operating range]
ON/OFF
[Recommended value]
ON
[Setting tradeoff]
None
[Remarks]
AN assisted inter-AN handoff decision means that AN judges the time for connection
release to originate the release. If [AN Assisted Inter-AN Handoff Decision Switch]
is enabled while processing RouteUpdate Message, check there are external AN
pilots in the pilots reported by RouteUpdate Message. If yes, and the strongest
external AN pilot is [Compare Difference of AN Assisted Inter-AN Handoff] higherthan the strongest pilot of this AN, AN automatically originates connection release.
ANHOCOMP (Compare Difference of AN Assisted Inter-AN Handoff)
[Description]
When the strength of the strongest external AN pilot is larger than that of this AN, andthe difference is greater than or equal to the parameter value, originate the handoff.
[Type]
Internal parameter
[Command name]
MOD DORRMMP
LST DORRMMP
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
74/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 74 of 88
[Range and unit]
063 (unit: 0.5dB)
[Operating range]
063
[Recommended value]
6
[Setting tradeoff]
If the parameter value is overlarge, AN is more difficult to automatically originate
connection release to facilitate decreasing Ping-Pong handoff.
POLLUTENUM (Branch Number at Pilot Pollution)
[Description]
When the number of pilots whose strength is larger than T_ADD in RouteUpdate
message is equal to or greater than the parameter value, it is called pilot pollution.
This parameter is one condition which is used to judge whether the pilot pollution
exists in the system. Like the 1X, set whether to perform pilot pollution detection in
soft parameter.
[Type]
Internal parameter
[Command name]
MOD DORRMMP
LST DORRMMP
[Range and unit]
46
[Operating range]
7/22/2019 Guide to CDMA 1X EVDO BSS Network Planning Parameter Configuration-20050820-C-1.0
75/88
Guide to CDMA 1x EVDO BSS Network Planning Parameter _v1.0 For internal use only
2006-06-01 All rights reserved Page 75 of 88
46
[Recommended value]
5
[Setting tradeoff]
If the parameter value is overlarge, the threshold for system to judge the pilot
pollution increases. Otherwise, the threshold decreases.
[Remarks]
Pilot pollution means that a large number of pilots with close strength are available
but preamble pilot is unavailable in the radio environment. The pilot pollution will
increases soft handoff ratio.
When processing the RouteUpdate Message reported by MS, the BSC analyzes
the pilot strength information to judge whether pilot pollution conditions are satisfied. If
yes, output the RouteUpdate Message through a log to facilitate the query of
network optimization personnel.
The pilot pollution conditions include:
(1) The pilot number that the strength in the RouteUpdate Message is more than
T_ADD is greater than or equal to the parameter POLLUTENUM.
(2) The strength balance of the strongest pilot and prior one in the RouteUpdate
Message is less than or equal to parameter POLLUTERELTRSHLD.
POLLUTERELTRSHLD (Relative Threshold at Pilot Pollution)
[Description]
When the strength difference between the strongest pilot and the second strongest
pilot in RouteUpdate message is less than or equal to the parameter value, it
top related