Document No.NoProduct namecdma2000 BSC
Used by Huawei Network Formulate and Optimization
EngineerProduct VersionBSC6600V100R002B03D005
Written byWireless Network Formulate Dept.Document
Version1.1
Guide to CDMA2000 1XDual (Multiple) Carrier Networking Prepared
byChenLinDate08-14-2003
Reviewed by Date
Reviewed byDate
Approved byDate
Huawei Technologies Co., Ltd.
All Rights Reserved Revised RecordsDateRevised
versionDescriptionAuthor
2003-08-141.00Drafted by ChenLin
2003-08-301.1According the module updating, the contents of
Guidebook is added that from BSC maintenance Dept. and R&D.
WuHao
2003-10-081.2The modification is according to reviews opinion.
(Review Flowing Number: N148ChenLin
Catalog 3Chapter 1 Summary
4Chapter 2 Coverage Form
6Chapter 3 Some Problems relative to Multi-carrier
Networking
63.1 Replacing process of Mobile Station Frequency
73.2 Description of Mobile Phone Initialization process
73.3 Introduction of SDA Algorithm
83.4Corresponding message for Frequency Selection of CDMA mobile
phone service
83.4.1 Sync Message
93.4.2 CDMA Channel list message
103.5Idle handoff and inter-frequency idle handoff
103.6Setting of user idle watching frequency and its
character
103.6.1Mobile phone stay resident at the basis coverage
carrier
123.6.2The mobile phone is distributed on the Basis and
Superimpose Coverage Carrier by HASH algorithm
134Scheme of channel resource configuration
134.4Configuration Scheme of Master-slave Channel
134.5Configuration Scheme of Peer Channel
145Configuration of Superimpose Coverage Edge
176BSC Dual Carrier Networking Data Configuration
176.4Corresponding Dynamic Configuration Command
186.5Each kind of Networking and its configuration
186.5.1Introduction
196.5.2Detailed networking and its configuration
246.5.3BTS Version restriction
257Operation maintenance for BSC Dual Carrier Networking
257.4Some steps for online of dual-carrier mobile
267.5The operation command of maintenance console
307.6Command of Debugging Console
308Optimization for Dual (Multi) Carrier Network
CDMA2000 1X
Guide to Double (Multiple) Carrier Networking
Key words: CDMA, Networking, Channel Configuration, Idle
handoff, Inter-frequency Hard Handoff, OptimizationSummary: This
guide refers to the Scheme Design, Test and Optimization Practice,
and shows a available double (multiple) carrier networking
schedule. But this schedule may not be the best, so we hope that
the readers can absorb the prime and make flexibly the solve
schedule of Huawei CDMA expansion is with more competition. Acronym
list: AcronymFull name in English Chinese explanation
BSSBase Station Sub-systemBSCBTS
CCL(M)Cdma Channel List (Message)IS95CDMA()
CDMACode Division Multiple Addressing
ECCLMExtended Cdma Channel List MessageIS2000CDMA
Ec/IoPilot energy accumulated over one PN chip
periodEc to the total power spectral desity
Ioin the received bandwidth 1.23MIo+
ENLExtended Neighbour List
FERFrame Error Rate
GNLGlobal Neighbour List
GSRGloba Service Redirect
IMSIInternational Mobile Subscriber Identity
MRUMaximum Receive Unit
ODUOut Door Unit
PNPseudorandom Noise
PPSMMPeriodical Pilot Strength Measurement Message2000
PRLPreferred Roaming List
RTDRound Trip Delay
RxReceived Power
SDASystem Determination Algorithm
TxTransmit Power
UIMUser Identity Module
Reference list:[1] IS2000-2 IS2000-5[2] The maintenance guide
referred by double carrier [3] Operation guide for CBSC double
networking.com[4] Network optimization report of GuangXi Unicom
Hezhou cdma 1X[5] cdma2000 BSC V100R002B03 Double Band network
requirement, BSC HASH algorithm optimization and testing examples
of call handling performance optimization.[6] The last scheme about
Dual band network, dynamically add and cancel synchronous channel
and Mobile HASH problems, and the revision of each module.
Chapter 1 Summary After the signal carrier CDMA wireless network
running, optimizing and Cell Splitting Expansion, the network
structure becomes reasonable. When the main service coverage range
reach about 500 meters (800MHz frequency field), it is not a
economical way to adopt the Cell Splitting Technique for local
capacity expansion, and because of complexity of the coverage
structure between near BS, the expansion will become more and more
inefficient. Then, the network will enter into a mature status as
follows: 1The distribution of BS is reasonable;2The radio coverage
rate of main service zone is reasonable high ( it exceeds 90%);3The
running quality of network is high and steadymain running index
excels than the stipulated capacity by operator;4The user is
increasing steady, and the voice service and data service is
increasing well; 5The occupation rate of cell radio source is high
in the busy hours of network (in the network, many cell overload. )
Then, it seems that the destination network needs the dual (multi)
carrier networking expansion. For the planned Superimpose Carrier,
it needs to de adjusted and disposed as follows: 1The spectrum of
this carrier should be clean in the destination superimpose
coverage range; 2This carrier has got the usage promise from the
supervisory department. 3The current Repeater etc. and other
autoecious coverage equipments, which can merger the running of the
Superimpose Carrier (Including: frequency field, bandwidth and
power tolerance etc.)4According to relative criterion , It is not
better to use the Primary and Secondary carrier of network as
Superimpose Carrier to avoid the roaming problem (because of that
the overhead configuration of Superimpose Carrier can be
eliminated) ; 5Investigate the arrangement of frequency setting of
network operator, which should be prepared for future expansion.
6As the speciality of Huawei CDMA equipment, if the expansion of
Superimpose Carrier is used by CDU, which must meet the restriction
of CDU to frequency point. Please refer to relative Guidebook
In order to legalize the economy and validity of Superimpose
Carrier construction; the following principle must be adopted: 1The
Superimpose Coverage Carrier must cover the destination service
area efficiently and continuously, namely the overlay of main
coverage area (for example, city) should be basically consistent
with Basis Coverage Carrier, the ikebana expansion is can not be
adopted. 2Theoretically, after the Multi-carrier expanding, it will
bring a few of bad purpose. So we must optimize the network before
the capacity expansion in order to advance quality.Some remaining
quality should be left for the capacity expansion
3When we design expansion schedule, the continuity of edge
covering of superimpose carrier should be considered together. For
the area that needs the Hard Handoff of inter-frequency (They are
mainly Supertrunk Road and key indoor coverage area etc.), we
should test and program them.4When we make the preliminary project
planningwe should consider the destination network structure and
distribution strategy to keep the good service purpose as the
network in the status of debugging, optimizing , normal running or
fault .This guide book refers to the Scheme Design, Test and
Optimize practice of Guangxi Hezhou China Unicom Dual Carrier
Network, and shows a feasible dual (multi) carrier network scheme.
But this scheme maybe not the best, so we hope that the reader can
absorb the distillate flexibly and make the expansion solve of
Huawei CDMA is of much more competitive. Chapter 2 Coverage FormThe
coverage of a CDMA network is very complex; generally, we can
analyze and observe from landscape orientation of Geography Domain
and longitudinal of Frequency Domain.
According to current Huawei CDMA products solution status, and
from landscape to see, the coverage form can be modeled by
following figure:
Figure 1 Plane Coverage Scheme of Modeled Multi Carrier
Superimpose
From the Frequency Domain to see, Multi-carrier superimpose
scheme also means as follows:
Figure 1 Coverage Scheme of Modeled Multi carrier Superimpose
Carrier Frequency From the two figures above, in order to guarantee
Multi-carrier superimpose level can work normally, we must lay
stress on the items as follows 1The coverage continuity of Macro
cell Superimpose Level ;2The coverage continuity of ODU and litter
BS indoor Pico Cell (This guidebook does not include it temporally
) ;3Whether we should adopt special abnormal hard handoff for
important coverage area (this guidebook version only refers to the
HANDDOWN inter-frequency hard handoff that triggered by Ec/Io and
RTD).Chapter 3 Some Problems relative to Multi-carrier Networking
3.1 Replacing process of Mobile Station FrequencySix statuses for
the frequency replacing of terminal:
1During initialization, the frequency selection is according to
MRU/PRL/ Sync Channel Messages;2In Null status, global redirect of
HASH,GSP message is according to CCL message.
3For CDMA2000 mobile phone, the inter-frequency can be searched
by the inter-frequency Neighbour List that is along with ENL,GNL
message.
4Call initial, the hard assignment of call inter-frequency is
according to algorithm; 5During the call process, the
inter-frequency Hard Handoff can be triggered according to trigger
conditionsEc/Io, RTD, PBU etc.;6Some non-standard roaming
inter-frequency searching system mechanism that are designed by
operator or manufacturer (for example, Korea SKT mobile phone etc.)
From the problems conclusion above, it has exceeded the range of
this guide book, and because of some non-standard and private
application process, which make the replace process much more
complex, the mobile phone action much more difficult to been
understood, and detailed setting and networking adaptability all
will be restricted by the process. Therefore, the engineer must set
and test detailed destination network in order to realize the
networking purpose at most.3.2 Description of Mobile Phone
Initialization process
Figure 1 a typical example for mobile phone initialization
processThe mobile phone initialization process includes two parts:
system signaling capture and channel selection. This process mainly
includes the standardization process of IS95/2000, they are:
according to MRU to synchronize carrier, search strongest PN, read
and get Sync Channel Message, read and get Paging Channel Message;
and the HASH operation is according to the CDMA channel list
message (CCLM) and extended CDMA channel list message of IS2000
(ECCLM) and the IMSI of mobile station to insure the mobile station
stay resident for the frequency channel idle at null status. At the
same time, it also includes the system that is balanced user load,
and the frequency replace of service redirect that is caused by
maintenance operationit is specialized by GSP message). Generally,
these operations need the cooperation of paging strategy from the
system. 3.3 Introduction of SDA Algorithm In order to realize the
system roaming agreement of operators, the initial process of
mobile phone also includes the stipulated process from operator and
manufacturer, the process mainly includes the following data tables
and corresponding mobile phone action: 1The basis initial search
frequency point of the system ( as the stipulation of agreement:
the 800MHz has two pairs of frequency point : 283691384777But there
are some other frequency point that belongs to special operator
from special nations ( for example, Korea SKT). 2For the history
usage frequency list and MRU, it is a working frequency list
established by the usage sequence before, from the mobile phone
action of different destination network to see, the priority of
this table may not be according to the principle of The latest used
one is scanned firstly.
3Priority Roaming List PRLthis table includes the available
system SID/NID and priority bit. For the detailed table, it is
formed according to the agreement of relative operators, mutually
store the peer SID and priority bit into the PRL of himself. For
the network access mobile phone of China Unicom, this table is
stored in UIM card, at the same time, according to the agreement
technologist that is supplied by Qualcomm; the short message can be
used to update PRL. Because of the standardization of CDMA is low,
therefore, non-standardization of SDA has important impaction on
the compatibility of mobile phone and network. 3.4 Corresponding
message for Frequency Selection of CDMA mobile phone service
Because of BSS of Huawei CDMA, it is pure cdma 1x system, at the
side of voice service, the Frequency Allocation of IS95 and IS 2000
users should be considered together, therefore, only the smallest
frequency to choose the message concentration (Sync Channle Message
and CDMA Channel List message), which can meet the requirements of
allocation frequency of users. The following is the configuration
of these messages:3.4.1 Sync MessageIn the Sync Message, there are
two fields: CDMA_FREQ: IS95/2000 Mobile phone all can realize the
fields,EXT_CDMA_FREQonly the IS2000 mobile phone can realize the
filed, and it take priority to be executed. Example of setting1
After the mobile phone capturing the Sync message, mobile phone
95 continues to capture the paging channel, whose frequency point
is extended CDMA channel number. If the 201 is not configured with
paging channel, or the mobile phone is not preferred to stay
resident at 201, so both of the fields can be set to 283 in the 201
Sync Channel:MOD CCH:
CN=2304,SCTID=0,CRRID=10,CDMABSN=283,EXTCDMABSN=283;There is only
283 frequency point in the Sync message of carrier (2304010.
Example of setting2
It is hoped that the CDMA channel number is set to 283 and the
Extended CDMA channel number is set to 283, which are 283 paging
channel of mobile phone 95 and 201 paging channel of 2000 mobile
phone. MOD SCCH:
CN=2304,SCTID=0,CRRID=10,CDMABSN=283,EXTCDMABSN=201;MOD SCCH:
CN=2304,SCTID=0,CRRID=11,CDMABSN=283,EXTCDMABSN=201;The CDMA
channel of setting Sync Message2304010 and11 is 283, and extended
CDMA channel is 201
NoteThe carrier number of 283 frequency point is 11, Cell number
is 2304, Sector number is 0, if the sync channel message is not
intended to be used, the gain of Sync Message can be set to 0, or
the following command can be used to cancel the Sync channel (BTS
version R002D004 supports the operation); RMV SYNCH:
CN=2304,SCTID=0,CRRID=10;3.4.2 CDMA Channel list message CDMA
Channel List Message CCLMdefines the frequency that can be watched
by IS95/2000 Mobile phone, and it is mainly used for the mobile
phone to choose frequency by HASH algorithm. Example of
setting3
If it is supposed that the mobile phone stay resident283, and
send calling on 283, only the 283 frequency point is sent on the
CCLM, namely the 201 frequency point is not sent on CCLM and ECCLM.
MOD CDMACH: CN=2304,SCTID=0,CRRID=10,CCLMFLG=NO, CCLMFLG=NO;And the
201 frequency point is set not to be sent at CCLM and ECCLM
of2304-0-10, 11 and only includes 283. Example of setting 4
If it is supposed that the 95 mobile phone stay resident at the
283 and 201, the 2000 mobile phone also stay resident283 and 201,
then the 283, 201 frequency point needs to be sent on CCLM ( the
283 and 201 frequency point can be sent on ECCLM), which can be
sent by maintenance console. Then the switch of sending ECCLM
should be opened, and at the same time it is shown that the ECCLM
has been sent: MOD ECCLM: SUBITEM=SCT_CLASS, CN=2304, SCTID=0,
RCQPCHSELINCL=NO, EXTCDMACHLST=YES;MOD CDMACH: CN=2304, SCTID=0,
CRRID=10, CCLMFLG=YES, ECCLMFLG=YES;MOD CDMACH: CN=2304, SCTID=0,
CRRID=11, CCLMFLG=YES, ECCLMFLG=YES;3.5 Idle handoff and
inter-frequency idle handoff The idle handoff is very important for
dual-carrier networking, and it will be very evident during using
the HASH algorithm to distribute idle mobile phone to watching
channels. Because the mobile phone the coverage edge of superimpose
coverage carrier is very different from the coverage edge of
corresponding sector of basis coverage; (Generally, the coverage
distance of superimpose coverage carrier is far), in this way, two
problems will be generated, firstly, the mobile phone that HASH to
superimpose coverage carrier will occupy the badly covered carrier
and it will lead to the low service quality (including conversation
and paging); secondly, If the abnormal hard handoff has been
configured, dropping calls will be increased that is caused by
triggering the hard handoff. For the mobile phone of IS95/2000, the
agreement agrees to support idle handoff and abnormal idle handoff.
When the adjacent cell list is drafted, the field of NGHBR_CONFIG
should be set to 2at the same time the field of NGHBR_BAND and
NGHBR_FREQ should be set correctly in ENLM.Notes: this method is
not used in pilot, so it is not confirmed whether the compatibility
is with problem.For the dual (Multiple) networking, the adjacent
cell will exert full usage by using the HASH algorithm to
distribute idle mobile phones. But for the IS95 mobile phone, the
length of neighbor cell list is very important, and the important
adjacent cell list should not be put behind 20 bits. 3.6 Setting of
user idle watching frequency and its character Generally, the
agreement of IS95/2000 supports two kinds of idle user watching
method, and both of them has its character.3.6.1 Mobile phone stay
resident at the basis coverage carrierCharacter of this method:1It
is only need to configure all of overhead channel on basis coverage
carrier, which is good for superimpose channel forward power. 2When
the overload of network is not high, the mobile phone voice service
only use the basis coverage carrier, and the service quality is
comparative good.
3When the overload of network is not high, the mobile phone data
service only use the superimpose coverage carrier. 4The idle
handoff is avoided, which is easy to set the hard handoff of edge
abnormal frequency.
5The overload intensity of paging and access channel is
increased, which is helpful to the overload of channel.6If it is
the pilot frequency beacon , the requirements of channel
configuration for pilot frequency beacon is low. (Only the
frequency channel is needed). 7When it is high overload, the high
rate of hard distribution will appear and it impact on the quality
of network. 8Each level of network needs good coverage consistency,
and also needs high requirements of maintenance. 9It can get high
capacity of expansion, but it can require the algorithm of overload
equalization highly. Setting of example 5
There are some steps for setting the status of work. 1CCLM is
set to only send Basis Coverage Carrier (283) and Superimpose
Coverage Carrier (201, namely Carrier 10).MOD CDMACH: CN=2304,
SCTID=0, CRRID=10, CCLMFLG=NO;2Basis Carrier is set to take
priority to accept callings, when the basis carrier load exceeds
the threshold (90%), the overflow callings will use the superimpose
coverage carrier. MOD CDMACH: CN=2304, SCTID=0, CRRID=10,
PLTPL=2;3Reduce the priority of 201 frequency point2304010 to 2,
and the priority of 283 is defaulted to 1, (highest), the smaller
the value is , the priority is higher. MOD CHINF: CN=2304, SCTID=0,
CRRID=11, CASNVCVLV=90;The hard provisioning is modified to
90%.
4Cancel the paging channel that is on the superimpose (201)
carrier.RMV PCH: CN=2304, SCTID=0, CRRID=10;5Cancel the sync
channel that is on the superimpose (201) carrier. RMV SYNCH:
CN=2304, SCTID=0, CRRID=10; Notes: Cancel the sync channel message
that lead to some type of mobile phone abnormal initialization, but
a experience is needed before the operation, or inquire the
department of testing or maintenance to confirm whether the mobile
is with compatibility. At present, it is said that the Diverse
Mobile phone of China Unicom Card is with compatibility. 6Open the
switch of hard Provisioning. MOD CELL: CN=2304, SCTID=0,
CASN=YES;3.6.2 The mobile phone is distributed on the Basis and
Superimpose Coverage Carrier by HASH algorithmThe character of the
method:The overhead channels are distributed full at basis and
superimpose coverage carrier. Each frequency is running dependently
basically, so the requirement of maintenance is on the low
side;3The hard handoff is configured from superimpose frequency
point to basis frequency point, which will lead to the service
quality on the edge. 4Edge hard handoff is set and the probability
of trigger handoff will be high;5The system paging strategy needs
high requirements;6The GSP is needed to equalize the upload of each
carrier;7The inter-frequency neighbor cell list is used to solve
the problem of inter-frequency handoff of superimpose coverage
edge. 8This method is suitable for mini network and the coverage
consistency of each level network being destroyed. Example of
setting 6
If it is supposed that the 95 mobile phone watching at 282, 201,
and the 2000 mobile phone also watching at 283, 201, the 283 and
201 frequency point is needed to be sent in CCLM, this disposal can
be set by the maintenance console. MOD CDMACH: CN=2304, SCTID=0,
CRRID=10, CCLMFLG=YES, ECCLMFLG=NO;
MOD CDMACH: CN=2304, SCTID=0, CRRID=11, CCLMFLG=YES,
ECCLMFLG=NO; Notes: Before using the HASH algorithm to distribute
the user watching, it is needed to be confirmed that whether
corresponding paging and sync channel are working (including that
whether this channel is canceled or the channel gain is normal.)
otherwise, the setting can not realize the distribution of users,
please pay more attention to that whether it is necessary to apply
it.
4 Scheme of channel resource configuration The scheme of channel
resource configuration is a special problem of Multi Carrier
Networking, for a destination network, how to show up the effect of
expansion, it lies on the scheme of channel resource configuration.
Generally, there are two kind of scheme of channel resource
configuration.4.4 Configuration Scheme of Master-slave Channel It
is applied on the mobile phone only stay resident at the Basis
Coverage Frequency Point, and the channel configuration scheme is
as follows:
1 Configuration Scheme of Master-slave channel Speciality: 1Only
the basic coverage level is configured with PCH and
SyncCHSuperimpose coverage level can be configured with SyncCH, it
also can increase its compatibility
2Basic Coverage level takes priority than bearer voice service,
the superimpose coverage level takes priority than bearer data
service.3Mitigate the idle handoff of mobile phone. 4The front
capacity of Carrier 2 is bigger than that of Carrier 1. 5If PBU is
adopted, it only needs PILOT CH.6paging and access channel load is
high. 4.5 Configuration Scheme of Peer ChannelIt is applied on the
mobile phone staying resident at each level carrier by HASH
algorithm.
2 Configuration Scheme of Peer ChannelSpeciality:1Each coverage
level adopts the same overhead channel configuration.2Each coverage
level loads equally, but marquee network needs the support of GSP
message. 3The mobile phone is still with the problem of idle
handoff.4The repeated configured overhead waste the front power of
this system. 5Paging strategy is a little complex. 5 Configuration
of Superimpose Coverage EdgeFor a specialized network, the
superimpose coverage level is limited. Therefore, when the users in
communication moves to the edge of superimpose coverage level, it
needs to inter-frequency hard handoff to retrieve the potential
dropping call. Huawei cdma BSS system support following
inter-frequency hard handoff:1Inter-frequency HANDDOWN hard
handoff, its trigger condition is Ec/Io and RTD threshold, which
can support 6 destination handoff. 2Inter-frequency direct hard
handoff, its trigger condition is Ec/lo threshold, which can
support 6 destination handoff. 3Pilot frequency beacon assisting
handoff, breed often thinks of that it has high hit ratio of
handoff, it is mainly used for key handoff edge and indoor coverage
system that is with high service quality, because of that it needs
accessory pilot frequency beacon equipment, so the cost is much
high.4IS2000 Mobile phone assist to search hard handoff, and
because of the adoption of inter-frequency searching, the handoff
hit ratio increase highly. 5The other hard handoff. For the
application of dual-carrier networking, a little applied
inter-frequency hard handoff scheme is the inter-frequency HANDDOWN
hard handoff. Correct adoption of this handoff can bring 95% hit
ratio of this abnormal hard handoff. Then we lay stress on discuss
the configuration of this inter-frequency hard handoff. The
following content is concluded for setting a inter-frequency hard
handoff:Select source cell of handoff. Generally the common method
for selecting source cell is rout test, it needs to test the PN
distribution of rout that needs handoff and select PN with high
superimpose coverage ratio as the handoff source cell. 2Select
handoff destination cell. It is similar to above, the frequency of
PN coverage can be sequenced according to the route test of Basis
Coverage Level, generally 4-5 PN with high probability are selected
out to be used as destination cell. 3Set the threshold of handoff
trigger level Ec/lo. In order to ensure high probability of handoff
trigger and the hit ratio of handoff, generally, it is better to
use the higher Ec/lo threshold to trigger hard handoff, its
appropriate range is -3 -8dB, which needs the route test to
validate. 4The RTD setting value and RTD setting value can be route
tested directly or evaluated indirectly. The detailed evaluation is
as follows:RTD = 4 + D / 244
Thereinto: RTD is the threshold of round-trip delay:
4 is the delayed experiential value brought in by
equipments:
D is the distance between designed handoff edge and the handoff
source cell (Unit: meter)Notes: In current BTS version, the value
of RTD reading occupy a fixed scale, therefore, in fact some
handoff will be triggered at some sites without needing trigger.
Setting of example (7)1The PMRO message can be used to control the
Mobile phone 2000t to report PPSMM. For Mobile phone 95, the
periodically delivered PMRO can make it periodically report PSMM.
The switch needs to be opened: pilot frequency soft parameter,
namely No.14 soft parameter of RRM.MOD SOFTPARA: SRVMN=RRM,
PRMNO=14, PRMV="0x01";Open the switch of mobile phone periodically
reporting the Pilot Frequency test reports. 2The smallest threshold
default of EC/LO is 25 received by Pilot Frequency in PMRO, it will
not trigger the mobile phone to report PPSMM under good conditions,
and the value can be changed to 31, namely cancel its usage. MOD
PMRO: CN=2304, SCTID=0, CRRID=10, MINECIOTHRS=31;3Set the absolute
threshold of EC/LO of HANDDOWN. This threshold should be confirmed
after reasonable handoff and according to actual route test report.
MOD HNDDWN: CN=2304, SCTID=0, CRRID=10, ABSTHRS=10;Modify the
absolute threshold of EC/O of HANDDOWN hard handoff to 5dB
4Set the biggest Loop Delay threshold of HANDDOWN hard handoff.
This threshold needs many times route test. Then note the average
circs of RTD of Handoff Band, for example, 90% circs of RTD near to
a value, then the value can be as the threshold. MOD HNDDWN:
CN=2304, SCTID=0, CRRID=10, MAXRTD=10;Modify the absolute threshold
of RTD of HANDDOWN to 10. 5Configure the handoff destination. Which
carrier the mobile phone is handoff to is decided by the route test
result and neighbor relation of geography location, the B03 and
next BSC version support many destination. For example, the 293
frequency point is handoff from Post Office 0 section 201 to 1,2
section of shopping center. ADD HNDDWNTRG: CDMACH="61-2304-0-201",
NBRCDMACHS="85-2312-1-283";
ADD HNDDWNTRG: CDMACH="61-2304-0-201",
NBRCDMACHS="85-2312-2-283";6Open the HANDDOWN of Source Test
Carrier, the carrier of all of the Activation Set
Open the HANDDOWN switch of Source Test Carrier, it is best to
source test the carrier of all of active collection. MOD PHOALG:
CN=2304, SCTID=0, CRRID=10, HD=ON;5Problem of Search Window .
Generally, before the mobile phone is handoff, the Cell PN delay of
signal carrier is difficult to be evaluated (especially the IS95
mobile phone does not support the function of inter-frequency
searching), therefore, the Search Window with big size is brought
into the Handoff Destination Message. There is a much better scheme
to bring the SRCH_WIN_N of Basis Coverage Level into SRCH_WIN_A of
HDM message, and resume it to Active Set Search Window through the
message of In Traffic System Parameter after the handoff. Notes:
The BSC software of B03 version doesnt bring corresponding
parameter field of Search Include, this problem can be solved by
increasing source cell SRCH_WIN-A. Generally, the value of
SRCH_WIN_A 2-3 times than RTD threshold can lead to high hit ratio
of handoff. 6 BSC Dual Carrier Networking Data ConfigurationUnder
the dual carrier networking, the stay resident frequency can be
changed by data configuration; the corresponding software version
of configuration command introduced as follows is CBSC6600
V100R002B03D005 and next version.6.4 Corresponding Dynamic
Configuration CommandThe following is the description of Dynamic
Configuration Command, which only introduce how to use the command
in documents. For the detailed instruction, usage and precaution;
please refer to Help Document of Maintenance console. 1MOD
ECCLMThis command is used to change whether a sector sends ECCLM
message and used as the mark of ECCLM whether the RC and QPCH
selection is included. Please refer to LST SYSMSGPARA command to
get corresponding inquire command. 2MOD CDMACHThis command is used
to modify whether a carrier is included in CCLM/CCLM message,
please refer to LST CDMACH command to get corresponding information
inquire.
3ADD PCHThis command is used to add paging channel for a
carrier. Please refer to LSTCMFINF command to get corresponding
paging channel information. 4RMV PCHThis command is used to cancel
the paging channel of a carrier, please refer to LST CMFINF command
to get corresponding paging channel information inquire. 5ADD
SYNCHThis command is used to add Sync Channel for a carrier, each
carrier only has a Sync Channel at most, please refer to LST CMFINE
to get corresponding Sync Channel information. 6RMV SYNCHIt is used
to cancel the Sync Channel of a carrier, please refer to LSTCMFINF
to get corresponding Sync Channel Inquire.7MOD SCHMIt is used to
modify the CDMA channel number and extended CDMA channel Number,
please refer to LST SYSMSGPARA command to get corresponding
configuration inquire of Sync Channel message.The following command
is not used directly in the configuration operation of document,
but they can supply the function of query for corresponding
configuration result: 1LST SYSMSGPARAThis command is used to
inquire the configuration of system message, what information to be
selected can be selected in inquire information. The potential to
be used inquire information are:1System message control parameter:
It is used to inquire whether a section carrier send ECCLM message.
Because of that at present the whether send ECCLM message is sector
level-1 parameter, therefore, the mark of different carrier must be
the same in the same sector. (Because of the paging, the ECCLM can
not be configured.) 2Sync Channel Message; It is used to inquire
the configuration parameter of Sync Channel; this text is only used
to inquire CDMA Channel Number and Extended Channel Number.
3Extended CDMA Channel List Message: It Is used to inquire the
configuration of extended CDMA channel List Message, this text is
only used to inquire whether the RC and QPCH selection is
included.2LST CDMACHIt is used to inquire configuration information
of frequency point; this text is only used to inquire whether a
carrier is sent in the message of CCLM or ECCLM.3LST CMFINFIt is
used to inquire some configuration information of Paging Channel
and Sync Channel, this text mainly includes two kinds of inquire
information:1Paging Channel Parameter: It is used to inquire the
number of Paging Channel, if a carrier is not with query result; it
means that this carrier is not configured with Paging Channel.2Sync
Channel Parameter: It is used to inquire Sync Channel Configuration
and corresponding parameter. If a carrier is not with query result,
it means this carrier is not configured with Sync Channel. 6.5 Each
kind of Networking and its configuration6.5.1 IntroductionThe
following networking only supply several common network
requirements, the other potential networking requirements is not
described here. The Dynamic configuration of each networking is a
recommended configuration, but not a unique available
configuration. This text doesn't include the description of all of
available configuration. Only one sector example is given for
following configuration description. Supposed that the Cell ID of a
sector is 6, and the ID of sector itself is 0, this sector is
configured with two carrier, and the carrier identification are
separately 10,11, and their corresponding frequency point is 283
and 201. If there actual configuration is not consistent with the
configuration, please modify it according to actual circs.6.5.2
Detailed networking and its configurationThe first step of
operation process is that each carrier has been configured with
Sync Channel, and at least configured with a Paging channel. If the
fact is different from it, the detailed step also is different. If
you do not know how to configure at detailed circs, you can resume
to the default circs by command, If you don not know how to
configure, you can renew the configuration to default status, and
then according to following steps to configure. In the following
description, the description in quotation marks means the parameter
name or parameter value. If a command is a little strange for you,
please refer to the HELP of maintenance console. If you want to
check up the configuration result, please use the query command in
the front of the text. It is better to confirm whether the
configuration is correct or not after the dynamic configuration.
During the configuration process, maybe the Carrier Block will lead
to dropping calling of mobile phone, therefore it is better to
change configuration at low traffic measurement. 6.5.2.1 Mobile
Phone 95 and Mobile 2000 Mobile Phone all stay resistent at 283 and
201 frequency point according to HASH algorithm. This configuration
is a little simply and can keep balance at the statistic of loads
between carriers. 6.5.2.1.1 Configuration Thinking WayIn order to
ensure the Mobile 95 and Mobile 2000 according to HASH algorithm to
stay resident at any frequency point, two frequency point can be
carried in both CCLM and ECCLM, in this way the Mobile phone can
select frequency point according to HASH algorithm. Notes: This
configuration is fit for the early time of Multi-carrier expansion,
and used to verify coverage or network, but if the hard handoff is
used at superimpose coverage, the mobile phone distribution
algorism will lead to too much trigger of hard handoff and impact
on the quality of network. 6.5.2.1.2 Operation steps1According to
MOD ECCLMCommand to modify the sector parameter, and set the
whether the RC and QPCH selection includes mark to NO (not
include). And Set the sending mark of extended CDMA channel list
message to YES (sending). 2According to the command of MOD CDMACH
to set the Whether to send in CCLM and Whether to send in ECCLM of
two carriers to YES. 6.5.2.1.3 Executer Script MOD ECCLM:
SUBITEM=SCT_CLASS, CN=6, SCTID=0, RCQPCHSELINCL=NO,
EXTCDMACHLST=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=10, CCLMFLG=YES,
ECCLMFLG=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=11, CCLMFLG=YES,
ECCLMFLG=YES;
6.5.2.1.4 Other instructionsThe networking does not need special
requirements for configuration of the CDMA Channel Number and
Extended CDMA Channel of Sync Channel Message, normal status
carrier is Ok.6.5.2.2 Mobile phone 95 stay resident at 283
frequency point, Mobile Phone 2000 stay resident at 201 frequecny
pointThis method is used for expansion of 2000 BS at old IS-95 BS
(It is not better to be adopted).6.5.2.2.1 Configuration thinking
way In order to ensure the Mobile Phone 95 and Mobile Phone 2000 to
stay resident at different frequency point, 283 frequency point is
carried in the CCLM and 201 frequency point is carried in ECCLM, in
this way different type Mobile Phone can operate different HASH
according to different message and stay resident at different
frequency point.6.5.2.2.2 Operation Steps 1According to the command
of MOD ECCLM to modify Sector parameter, and set the whether the RC
and QPCH selection include mark to NO (do not include), and set the
sending mark of extended CDMA channel list message to YES
(sending). 2According to the command of MOD CDMA to set the 283
frequency point Whether to send in CCLM to YES, but set the whether
to send in ECCLM to NO; and set the 201 frequency point whether to
send in CCLM to NO, but set the Whether to send in ECCLM to
YES.
3According to the command of NOD SCHM to set the CDMA Channel
Number of Sync Channel Message of two frequency to 283, and set the
extended CDMA channel to 201.6.5.2.2.3 Executive scriptMOD ECCLM:
SUBITEM=SCT_CLASS, CN=6, SCTID=0, RCQPCHSELINCL=NO,
EXTCDMACHLST=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=10, CCLMFLG=YES,
ECCLMFLG=NO;
MOD CDMACH: CN=6, SCTID=0, CRRID=11, CCLMFLG=NO,
ECCLMFLG=YES;
MOD SCHM: CN=6, SCTID=0, CRRID=10, CDMABSN=283,
EXTCDMABSN=201;MOD SCHM: CN=6, SCTID=0, CRRID=11, CDMABSN=283,
EXTCDMABSN=201;6.5.2.2.4 Other instructionThis networking is not
necessary to be configured for CDMA Channel Number and Extended
CDMA Channel Number of Sync Channel Message. But the configuration
above can reduce the network searching time. 6.5.2.3 Mobile phone
95 stay residant at 283 frequency piont, and Mobile Phon
6.5.2.4 2000 stay residant at 283 or 201 frequency point
acccording to HASH algorithmThis method is used for expansion of
2000 BS at old IS-95 BS (It is not better to be adopted).6.5.2.4.1
Configuration thinking way In order to ensure mobile phone 95 and
Mobile Phone 2000 stay resident at different frequency point
separately, the CCLM only carries 283 frequency point, and ECCLM
only carries 283 or 201 frequency point. In this way different type
Mobile Phone execute different HASH according to different message
to keep staying resident at different frequency point. 6.5.2.4.2
Operation steps1According to command of MOD ECCLM to modify sector
parameter and set the whether RC and QPCH selection includes mark
to NO (do not include) and set the sending mark of extended CDMA
channel list message to YES (sending). 2According to the command of
MOD CDMA to set the 283 frequency point Whether to send in CCLM to
YES, but set the whether to send in ECCLM to YES; and set the 201
frequency point whether to send in CCLM to NO, but set the Whether
to send in ECCLM to YES.3According to the command of NOD SCHM to
set the CDMA Channel Number of Sync Channel Message of two
frequency to 283. 6.5.2.4.3 Execution Script MOD ECCLM:
SUBITEM=SCT_CLASS, CN=6, SCTID=0, RCQPCHSELINCL=NO,
EXTCDMACHLST=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=10, CCLMFLG=YES,
ECCLMFLG=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=11, CCLMFLG=NO,
ECCLMFLG=YES;
MOD SCHM: CN=6, SCTID=0, CRRID=10, CDMABSN=283;MOD SCHM: CN=6,
SCTID=0, CRRID=11, CDMABSN=283;6.5.2.4.4 Other instructionThe
networking does not need special requirements for configuration of
the CDMA Channel Number and Extended CDMA Channel of Sync Channel
Message, normal status carrier is Ok.6.5.2.5 Mobile Phone 95 and
Mobile Phone 2000 all stay resident at 283 frequency point, and
both of frequency point all configured with paging channleNotes:
This method can be used for the experiment of Mobile Phone
compatibility.6.5.2.5.1 Configuration thinking wayIn order to
ensure the Mobile Phone 95 and Mobile Phone 2000 to stay resident
at the same signal frequency point (283), the CCLM and ECCLM
message only carry 283 Frequency point. In this way there is only
one 283 Frequency point in the CCLM and ECCLM message, the Mobile
Phone 95 and Mobile Phone 2000 all stay resident at 283 frequency
point. 6.5.2.5.2 Operation steps 1According to command of MOD ECCLM
to modify sector parameter and set the whether RC and QPCH
selection includes mark to NO (do not include) and set the sending
mark of extended CDMA channel list message to YES
(sending).2According to the command of MOD CDMA to set the 283
frequency point Whether to send in CCLM to YES, but set the whether
to send in ECCLM to YES; and set the 201 frequency point whether to
send in CCLM to NO, but set the Whether to send in ECCLM to YES.
3According to the command of NOD SCHM to set the CDMA Channel
Number of Sync Channel Message of two frequency to 283. 6.5.2.5.3
Execution scriptMOD ECCLM: SUBITEM=SCT_CLASS, CN=6, SCTID=0,
RCQPCHSELINCL=NO, EXTCDMACHLST=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=10, CCLMFLG=YES,
ECCLMFLG=YES;
MOD CDMACH: CN=6, SCTID=0, CRRID=11, CCLMFLG=NO,
ECCLMFLG=NO;
MOD SCHM: CN=6, SCTID=0, CRRID=10, CDMABSN=283,
EXTCDMABSN=283;MOD SCHM: CN=6, SCTID=0, CRRID=11, CDMABSN=283,
EXTCDMABSN=283;6.5.2.5.4 Other instruction This networking is not
necessary to be configured for CDMA Channel Number and Extended
CDMA Channel Number of Sync Channel Message. But the configuration
above can reduce the network searching time. 6.5.2.6 Mobile phone
95 and Mobile Phone 2000 all stay resident at 283 frequency point
and 201 frequency point is wihtout configuring paging channel This
method can save power and code source.6.5.2.6.1 Configuration
thinking wayBecause of that the 201 is not configured with paging
channel, therefore the Mobile phone will not stay resident at 201
frequency point, but it must be configured with Sync Channel
message, otherwise it will lead to the power of Mobile phone is not
steady. 6.5.2.6.2 Operation steps1According to command of MOD ECCLM
to modify sector parameter and set the whether RC and QPCH
selection includes mark to NO (do not include) and set the sending
mark of extended CDMA channel list message to YES (sending).
2According to the command of RMV PCH to cancel all of the paging
channel of 201 frequency point; (After canceling the paging
channel, the speed paging channel will be cancelled automatically.
All of the paging channel must be cancelled, the following script
only aims at canceling a paging channel, if paging channel number
is not 1, the format of RMV PCH command will be changed, and a
parameter of Batch Delete number will be added.)3According to the
command of MOD CDMACH to set the whether to send in CCLM of carrier
283 to YES, and set the Whether to send in ECCLM to YES; it is not
necessary to set the 201 frequency point. 4According to the command
of MOD SCHM to set the CDMA Channel number and Extended CDMA
Channel number of Sync Channel Message to 283.6.5.2.6.3 Execution
script MOD ECCLM: SUBITEM=SCT_CLASS, CN=6, SCTID=0,
RCQPCHSELINCL=NO, EXTCDMACHLST=YES;
RMV PCH: CN=6, SCTID=0, CRRID=11;MOD CDMACH: CN=6, SCTID=0,
CRRID=10, CCLMFLG=YES, ECCLMFLG=YES;
MOD SCHM: CN=6, SCTID=0, CRRID=10, CDMABSN=283,
EXTCDMABSN=283;MOD SCHM: CN=6, SCTID=0, CRRID=11, CDMABSN=283,
EXTCDMABSN=283;6.5.2.6.4 Other instruction This networking is
obligatory for the CDMA Channel Number and Extended CDMA Channel
number of Sync Channel message of two frequency point, otherwise it
will lead to the mobile phone fails to be online. This networking
is limited a little for the BTS version, please refer to partial
instruction of BTS version restriction. 6.5.2.7 Mobile Phone 95 and
Mobile Phone 2000 all stay resident at 283 and 201 Frequency point
and without configuing with Paging Channel and Sync Channel This
configuration at most saves the power of superimpose carrier and
the code source, but it is also easy to occur compatibility.
6.5.2.7.1 Configuration thinking wayBecause of that the 201 is not
configuring with paging channel and Sync Channel, therefore the
mobile phone will not stay resident at 201 frequency point. But the
master-slave frequency point of mobile phone must be configured
with 283 frequency point, so the 283 frequency point is advised to
be configured. 6.5.2.7.2 Operation steps1According to command of
MOD ECCLM to modify sector parameter and set the whether RC and
QPCH selection includes mark to NO (do not include) and set the
sending mark of extended CDMA channel list message to YES
(sending). 2According to the command of RMV SYNH to cancel the Sync
Channel of 201 frequency point; (After canceling the Sync Channel,
all of the speed paging channel will be cancelled automatically).
3According to the command of MOD CDMACH to set the 283 frequency
point Whether to send in CCLM to YES, and set the Whether to send
in ECCLM to YES; It is not necessary to configure corresponding
parameter of 201 frequency point.4According to the command of MOD
SCHM to set the CDMA Channel Number and Extended CDMA Channel of
Sync Channel Message of two frequency point to 283; It is not
necessary to configure corresponding parameter of 201 frequency
point.6.5.2.7.3 Execution script MOD ECCLM: SUBITEM=SCT_CLASS,
CN=6, SCTID=0, RCQPCHSELINCL=NO, EXTCDMACHLST=YES;
RMV SYNCH: CN=6, SCTID=0, CRRID=11;MOD CDMACH: CN=6, SCTID=0,
CRRID=10, CCLMFLG=YES, ECCLMFLG=YES;
MOD SCHM: CN=6, SCTID=0, CRRID=10, CDMABSN=283,
EXTCDMABSN=283;6.5.2.7.4 Other instruction This networking is
obligatory for CDMA Channel Number and Extended CDMA Channel number
of Sync Channel message of 283 frequency point, otherwise it will
lead to the mobile phone failed to online. 6.5.3 BTS Version
restriction Regarding to the several networking above, except that
the fifth networking (201 is configured with 201 Sync Channel but
without Paging Channel.) is limited to the BTS version, the other
networking does not have special requires for BTS version.
Regarding to only configuring Sync Channel but without Paging
Channel, the restriction for BET version is as follows: After
canceling all of paging Channel of some sector carrier, there are
pilot carrier and Sync Channel in the carrier, the system updating
messages it will send the indication of Sync Channel message
updating. At this moment, if the corresponding source of the sector
carrier on BTS has reset (it maybe the carrier board of this
carrier reset, or the BCP board of this carrier reset), BTS will
initial the ACC_MSG_CONFIG_SEQ of this sector carrier to null
value. Because if the R001B03D004 in front of R002B02D004 Version
and the BTS3601 in front of R001B03D004 version judged that the
ACC_MSG_CONFIG_SEQ is different from the ACC_MSG_CONFIG_SEQ
delivered from BSC, they will thought of that it is obligatory to
update access parameter message. But at this moment there is no
paging channel, the system message updating will not take with any
system overhead message that sent by any paging channel, therefore
the system updating message of this carrier will failed. Then if we
want to update system message successfully, firstly we only need to
add paging channel to make a completed system message updating,
then cancel the paging channel necessarily, after that the system
message updating will be successful. But the BTS3612 of R002B02D00
Version and BTS3601C of R001B03D004 Version all do not with this
problem. 7 Operation maintenance for BSC Dual Carrier Networking7.4
Some steps for online of dual-carrier mobile 1 Step off Sync
Channel The default configuration of the CDMA Channel Number and
Extended CDMA Channel Number of Sync Channel Message is the carrier
point of their local carrier. It is supposed that the mobile stay
resident at 283 only though CCLM and ECCLM, after the mobile phone
handing up that make call at 201, which need to capture 201 paging
channel, then it will transfer to 283 paging channel, but at this
moment searching networking will occur on the mobile phone.
2Idle status The mobile phone will account the service frequency
point by HASH algorithm and according to the received frequency
point that is included in CCLM or ECCLM. If the ECCLM is not sent
and the 283 is only sent in CCLM, then all of mobile phone will
HASH to the paging channel of 283 to receive system message, and it
will stay resident at 283 frequency point and rise calling at 283.
3Initial calling of mobile phone BSC receive the call from Mobile
phone, if the switch of hard assignment is open, the hard
assignment can be according to the priority of carrier and current
load of carrier. For example, set the priority of the 283 frequency
point to 1 and the 201 frequency point to 2 (the smaller number is,
the bigger the priority is), and the threshold of setting 283 and
201 hard assignment is 80%, then the BSC will take priority at 283.
If the load of 283 is bigger than 80%, the channel assignment will
occur between 201 and 283. If the priority of 283 and 201 all are
set to 1, then the BSC will select a carrier with light load to
distribute channel.4Handoff After the BSC receive PSMM or PPSMM, if
it is found that the EC/LO of soft handoff destination is less than
a threshold, it will trigger some hard handoff. For example, open
the switch of HANDDOWN, which can not do the hard Handoff that
assisted by Mobile phone, (for example, the hard handoff switch
assisted by Mobile phone is closed, the mobile phone version is 6,
or it is configured without inter-frequency neighbor), and active a
RTD that is bigger than a threshold, then the trigger of HANDDOWN
Hard Handoff needs to open a serial switch. 5RTD measuring For the
HANDDOWN or the Direct Hard Handoff, the Round Trip Delay is very
important, which needs to layout the handoff band reasonably and
measure the Round Trip Delay of hardoff band and set RTD threshold.
The Round Trip Delay can be used that is measured by the UltraEdit
filter BS from Debugging Console. 6Configure the destination of
HANDDOWNRTD
The HANDDOWN handoff and RDT handoff need to configure the
destination of handoff. According to neighbor relation, the
configuration should meet the condition which pilot carrier the
mobile phone is hand to. 7.5 The operation command of maintenance
console1Maintenance of carrier status: If the 201 carrier has been
implemented, it is found that the configuration of coverage,
neighbor relation, handoff parameter, hardoff band is not
reasonable, then the carrier should be blocked and serve the mobile
phone at 283.Query of carrier status: DSP RES
Block carrier: BLK RES
Unblock carrier: UBL RES
Notes: The carrier block can be avoided the dropping calls by a
smooth process, for example: firstly modify the CDMA signal number
and extended CDMA channel number to 283 that are in the Sync
message of 201, and set the 201 is not sent in the CCLM and ECCLM,
in this way the idle Mobile phone will not stick at the 201, then
after the calls of 201 hanging up, then block this frequency point.
For unblock, the contrary process is advised to be adopted. 2Sync
Channel Message: There are two filed in the Sync Channel message:
CDMA Channel number and extended CDMA Channel number, they mean the
frequency point of corresponding paging channel. After the Mobile
phone capturing the sync channel, the Mobile Phone 95 will continue
to capture the master paging channel whose frequency point is CDMA
Channel, and the Mobile phone 2000 will continue to capture the
master paging channel whose frequency point is Extended CDMA
Channel. If the 201 is not configured with paging channel, or the
mobile phone dont intend to stay resident at 201, both of the
fields can be set t0 283 in 201 Sync Channel. MOD SCHM: CN=2304,
SCTID=0, CRRID=10, CDMABSN=283, EXTCDMABSN=283;The Sync message of
Carrier (2304010only carry 283 frequency point. If it is supposed
that the Mobile phone 95 is with 283 paging channel, 2000 mobile
phone is with 201 paging channel, the CDMA channel can be set to
283, the Extended CDMA channel can be set to 201. MOD SCHM:
CN=2304, SCTID=0, CRRID=10, CDMABSN=283, EXTCDMABSN=201;MOD SCHM:
CN=2304, SCTID=0, CRRID=11, CDMABSN=283, EXTCDMABSN=201;The CDMA
channel in Sync Message of 2304-0-1011 is set to 283the extended is
set to 201
3CCLM message and ECCLM messageBecause of the relation of idle
handoff, if all of the mobile phone is hoped to stay resident at
283, and send calls at 283. Then only the 283 frequency point is
set to be sent in CCLM, namely the 201 is not set to be sent CCLM
and ECCLM. MOD CDMACH: CN=2304, SCTID=0, CRRID=10, CCLMFLG=NO,
ECCLMFLG=NO;The 201 frequency point is not set to be sent in CCLM
and ECCLM of 230401011,only the 283 is included. If the Mobile
Phone 95 is hoped at 283 and Mobile phone 2000 is hoped at 201, it
needs to send ECCLM. The 283 frequency point is only sent in CCLM,
and 283 and 201 frequency point are sent in ECCLM, the sending 283
in CCLM and ECCLM can be set by maintenance console, the 201 is not
sent in ECCLM but not in CCLM. Then the switch of ECCLM needs to be
opened, and show up that the ECCLM is sent: MOD ECCLM:
SUBITEM=SCT_CLASS, CN=2304, SCTID=0, RCQPCHSELINCL=NO,
EXTCDMACHLST=YES; MOD CDMACH: CN=2304, SCTID=0, CRRID=10,
CCLMFLG=NO, ECCLMFLG=YES;
MOD CDMACH: CN=2304, SCTID=0, CRRID=11, CCLMFLG=YES,
ECCLMFLG=YES;4Hard assignment: The switch of Hard Handoff belongs
to the level of cell and it is configured in the CELL table. Hard
Assignment threshold belongs to the level of carrier.
Carrier priority belongs to the level of carrier and it is
configured in the PILOT table. For example, if the mobile phone is
hoped to take priority to call at 283, if the load of 283 exceeds
than 80%, which will be load balanced with the 201 frequency point
of the same sector. It can be set as follows: MOD CHINF: CN=2304,
SCTID=0, CRRID=11, CASNVCVLV=80;Modify the threshold of hard
assignment is 80%.MOD CDMACH: CN=2304, SCTID=0, CRRID=10,
PLTPL=2;Modify the priority of 201 frequency point 2304010to 2 and
the priority of 283 is defaulted to 1the smaller the value is, the
higher the priority is. MOD CELL: CN=2304, SCTID=0, CASN=YES;Open
the switch of hard assignment. Notes: After setting, maybe the
monitor result of radio source shows that the load of two carriers
is not average, it is because of that there are many handoff branch
in the 283 frequency point, hard assignment only aims at initial
call but the added soft handoff branch can not be used for hard
assignment. 5PPSMMThe PMRO can be used to control Mobile phone 2000
to report PPSMM. For Mobile phone 95, it can use the delivered
periodically PMRO to report PSMM periodically. The following
switches are needed to be opened. 1Pilot frequency testing soft
parameter, namely the No.14 soft parameter of RRM:MOD SOFTPARA:
SRVMN=RRM, PRMNO=14, PRMV="0x01";Open the switch of mobile phone
reporting Pilot Frequency Testing Report periodically. 2Open the
HANDDOWN switch of source test carrier, it is best to source test
all of the carrier of active collection. MOD PHOALG: CN=2304,
SCTID=0, CRRID=10, HD=ON;Open the switch of HANDDOWN Hard Handoff,
if the mobile phone is at 283, the switch of 283 needs to be
opened. 3The smallest threshold default of EC/lO that accepted by
PMRO pilot frequency is25,Under good environment, it will not
trigger the Mobile phone to report PPSMM, so the default can be
modified to 31:MOD PMRO: CN=2304, SCTID=0, CRRID=10,
MINECIOTHRS=31;
6HANDDOWN Hard Handoff: The trigger condition of HANDDOWN Hard
Handoff is that the Target Pilot Frequency intensity of Soft
Handoff is lower than a threshold (EC/IO absolute threshold of
HANDDOWN Hard Handoff), and the smallest RTD of active collection
is higher than a threshold (The biggest Round Trip Delay of
HANDDWON Hard Handoff). The detailed steps is as follows: 1Open the
switch of HANDDOWN Hard Handoff, only the Pilot Frequency switch is
opened, it can trigger the HANDDOWN Hard Handoff, so all of the
switch of pilot frequency that maybe become to be strongest are
opened. MOD PHOALG: CN=2304, SCTID=0, CRRID=10, HD=ON;
2Set the EC/LO absolute threshold of HANDDOWN Hard Handoff, this
threshold needs to actual route testing result and confirm after
programming reasonable Handoff band. MOD HNDDWN: CN=2304, SCTID=0,
CRRID=10, ABSTHRS=26;Modify the EC/lO absolute threshold of
HANDDOWN Hard Handoff to 13dB3Set the biggest Round Trip Delay
threshold of HANDDOWN Hard Handoff, this threshold needs many times
route test and notes of RTD average circs of Handoff Band, for
example the value that the RTD near to at 90%, this value is the
threshold. MOD HNDDWN: CN=2304, SCTID=0, CRRID=10, MAXRTD=30;Modify
the EC/lO threshold of HANDDOWN hard handoff to 304Configure
handoff destination, according to the neighbor relation of route
testing result and geography location to decide what carrier the
mobile phone handoff to, the B03 supports multi target. For
example, the 283 frequency point that is handoff from Post office 0
sector 201 to Shopping center 1,2 sector. ADD HNDDWNTRG:
CCDMACH="61-2304-0-201", NBRCDMACHS="85-2312-1-283";
ADD HNDDWNTRG: CCDMACH="61-2304-0-201",
NBRCDMACHS="85-2312-2-283";7Query: All of query of parameter above
use LST command, the LST is used to query data table, BAM is read
and showed from background data table directly. 1The LST RRMINFO is
used for the query of algorithm parameter, insert Cell Number,
sector number, carrier number, and select the table that needs to
be queried .2The LST SYSMSG is used for the system message query,
insert the Cell number, Sector number and Carrier Number, and
select the table that needs to be queried. 3The switch of hard
assignment is parameter of sector, LST CELL is used for query.4The
priority is the parameter of Pilot frequency, LST CDMA is used for
query. 7.6 Command of Debugging ConsoleThe Start Call Trace and
Stop Call Trace are mainly used for debugging console.Start Call
Trace, the mobile phone Round Trip Delay is checked up by Debugging
Console.
Stop Call Trace, if a mobile phone is stopped tracing, please
bring down to avoid interfere.
3Check up what mobile phone and performance have been traced,
the DSP TRACK is used for this operation. 8 Optimization for Dual
(Multi) Carrier NetworkA reasonable multi-carrier network of
networking can receive a satisfied purpose. If before expansion,
the quality index of coverage network is critical comparatively.
Because of that the expansion will bring some bad affection, for
example, the call dropped ratio maybe increase 20%30%, and the
success ratio of access will deteriorate 1%3%. Therefore the
network index after expansion will not reach quality requirements.
For this network, before expansion, the network needs to be
optimized. The optimization target includes: reducing call dropped
ratio, increase access success ratio. The common methods are:
dispose pollution of pilot frequency, optimize neighbor list, debug
power control parameter, debug coverage structure of radio network,
debug handoff parameter etc. The purpose of debugging is not only
by viewing traffic measurement index and also by the statistic
index of route test data ,generally they are: contrast of the Ec/lo
distribution optimization, contrast of distribution of mobile phone
transmit power, contrast of distribution of mobile receiving power,
contrast of FER distribution and contrast of handoff scale. Please
refer to relative Guide book to get the detailed optimization
method. After installing the superimpose carrier, generally the
installed network needs a test, and then it can accept commercial
users directly. The BSC version R002B03D006 and next version has
collected test function for the test. The principle is that the
tested mobile phone is assigned to superimpose coverage directly,
but common commercial mobile phone does not adopt coverage level
temporarily. Generally, the test for superimpose includes that:
coverage quality index: Ec/lo, Rx/Tx power, FER etc; in addition,
the difference between the index and basis coverage level also is
included. These testes are helpful for future networking
debugging.
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