8-crnp system message
TRANSCRIPT
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Huawei Confidential. All Rights Reserved
Issue 3.0
RG0106CDMA 1X System Message
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Internal Use
Objectives
After completing this course, you shouldbe able to understand
Abstract of system messages
Classification of system messages
Contents of mandatory system messages Adjustment of system messages
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Internal Use
Chapter 1 Introduction
Chapter 2 Classification of system messages
Chapter 3 Contents of mandatory system messages
Chapter 4 Adjustment of system messages
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Internal Use
Introduction to system message
In order to access CDMA network, MS must get enough
information.
Pilot Channel
Sync Channel
Paging Channel Forward Traffic Channel
Access ChannelReverse Traffic Channel
while other CDMA channels carry service, signaling, andmessages as well.
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Internal Use
Common Structure of Message
P_REV
MIN_P_REV
SID
NID
PILOT_PN
LC_STATE
SYS_TIME
LP_SEC
LTM_OFF
DAYLT
PRAT
8
8
15
16
9
42
36
8
6
2
11
FieldLength
(in bits)
Sync Channel Message
CDMA_FREQ
EXT_CDMA_FREQ
1
11
All messages of traffic channel are
sent in burst mode.
The first byte indicates message
type
The subsequent fields indicate the
sequence of messages.
The message sending modes:
Confirmation;Re-sending by multiple times
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Internal Use
Chapter 1 Introduction
Chapter 2 Classification of system messages
Chapter 3 Contents of mandatory system messages
Chapter 4 Adjustment of system messages
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Messages received in idle state
Sync Channel
Sync Channel Msg
Pilot Channel
No Messages
Paging Channel
Access Parameters Msg
System Parameters MsgCDMA Channel List Msg
Extended SystemParameters Msg
General Neighbor ListMsg
Extend Global ServiceRedirection Msg
Global ServiceRedirection Msg
User Zone IdentificationMsg
Private Neighbor ListMsg
Extend CDMA ChannelList Msg
Neighbor List Msg
Extended Neighbor List Msg
BTS
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Messages received during conversation
In-Traffic System
Parameters Msg
Neighbor List
Update Msg
Extended Neighbor ListUpdate Msg
BTS
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Classification by contents (Idle)
Sync Channel Message SCH.M
Access Parameters Message AP.M
System Parameters Message SP.M
Neighbor List Message NL.M
CDMA Channel List Message CCL.M
Extended System Parameters Message ESP.M
The cdma2000 protocol stipulates thirteen kinds
of system messages, of which six are mandatory.
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Classification by contents (Idle)
Global Service Redirection Message GSRD.M
Extended Neighbor List Message ENL.M
Extended CDMA Channel List Message ECCL.M Private Neighbor List Message PNL.M
General Neighbor List Message GNL.M
User Zone Identification Message UZI.M
Extended Global Service Redirection Message EGSRD.M
According to the protocol of cdma2000, the sevensystem messages below are optional:
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Classification by contents (traffic channel)
In-traffic System Parameters Message ITSP.M
Neighbor List Update Message NLU.M
Extended Neighbor List Update Message ENLU.M
System messages sent on traffic channel
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Internal Use
Chapter 1 Introduction
Chapter 2 Classification of system messages
Chapter 3 Contents of mandatory system messages
Chapter 4 Adjustment of system messages
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Internal Use
Synchronization channel message
Sent on synchronization channel
When an MS is in initiation state, it obtains:
system configuration
time information
Important parameters in the message:
Minimum protocol revision version
SID, NID, PILOT_PN LC_STATE
System time
Paging channel rate
Time Synch
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Internal Use
Explanation of important fields of SYN.M
LP_SEC: The number of leap seconds that have occurred since the
start of system. It means how much faster the GPS time is comparedto the real earth time. Its value of each year should be modified.
LTM_OFF (Local Time Offset): It indicates the time zone, that is,
the offset of the local time from the Greenwich time.
DAYLT (Is daylight saving time adopted?): If daylight saving time
is adopted, this field is set to 1, otherwise it is set to 0.
PRAT (Paging channel rate): when it is set to full rate, the capacity
of the paging channel will be increased at the cost of part of thecapacity of the forward link. When half rate is selected, the capacity
of the forward link will increase as the paging capacity decreases.
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Internal Use
Explanation of important fields of SYN.M
SCHM_CDMA_FREQ: The desired carrier frequencyconfiguration for IS95 MS. If there is no special requirements
for frequency for IS95 MS and IS2000 MS concerning
networking, this parameter can be set to any normal carrier
frequency under that sector. The assigned frequency, the
CDMA channel number corresponding to the frequency the
carrier is employed for IS95 MS.
EXT_CDMA_FREQ: Extended assigned frequency, the CDMA
channel number corresponding to the frequency the carrier is
employed for MS IS 2000.
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Internal Use
Example of SCH.M
From the system messages collected:
protocol revision version of this system is 5,minimum protocol revision version is 2,
SID is 14001, NID is 1, PN offset is 272,
difference between GPS time and the local time is 13 seconds,
time zone is the eighth east zone, daylight saving time is disabled,
and the paging rate is full rate.
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Internal Use
System parameter message
Sent on the paging channel
Important parameters in the message:
PILOT_PN, SID, NID Configuration message sequence
number
REG-ZONE, ZONE-TIMER
BASE-ID, BASE-CLASS
PAGE-CHAN
MAX_SLOT_CYCLE_INDEX T-ADD,T-DROP, T-COMP,T-TDROP
Home registration class BTS Longitude
BTS Latitude
Pilot search window width
Power control report setting class
Optional system parameter class
existed indication
Handoff
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Internal Use
Explanation of important fields of SP.M
REG_ZONE (Registration zone code): Registration zone code of
the sector where the MS is located. Registration zone codeindicates a group of BSs in a given system or network. An MS can
register in more than one zone. Zone cod (REG_ZONE) and the
SID/NID of the zone uniquely identify a zone.
TOTAL_ZONES: In ZONE-based registration, the number of registration zones that can be reserved by the MS. Only when
ZONE-based registration is used, that is, TOTAL_ZONES is not 0,
can REG_ZONE value take effect.
ZONE_TIMER (Zone code timer length): The MS saves
REG_ZONE in the SPM message to ZONE list. If no message
containing the REG_ZONE is received within the timer length, the
MS will delete the REG_ZONE.
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Internal Use
Explanation of important fields of SP.M
MULT_SIDS (multi-SID storage ID): Whether the MS is allowed to
store SID_NID_LISTs with different SIDs
MULT_NIDS (multi-NID storage ID): whether the MS is allowed to
store SID_NID_LISTs with same SIDs but different NIDs.
PAGE_CHAN (Paging channel number): the paging channel
number of the carrier, whose value should not be 0. When the
capacity of the paging channel is insufficient at half rate, first increase
the rate of the paging channel. When at full rate and the capacity of
the paging channel is still inadequate, more paging channels should
be configured.
MAX_SLOT_CYCLE_INDEX (Maximum slot cycle index): the
maximum slot cycle index in the paging channel slot mode. In this
mode the MS decides on which slot it will work and reports it to BTS.
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Internal Use
Explanation of important fields of SP.M
HOME_REG (Home registration ID): It indicates whether the non-roaming MS is
allowed to register. The non-roaming MS can perform automatic registration when the
values of HOME_REG and MOB_TERM_HOME (home cell called allowed indication)
are 1. The automatic registration includes power-up registration, power-down
registration, timer registration, zone registration, and distance-based registration as
well.
FOR_SID_REG (SID roaming registration ID): It indicates whether the MS roaming
from other SIDs is allowed to register. The MS roaming SIDs can perform automatic
registration when the value of this variable and MOB_TERM_FOR_SID (set in the MS)are 1. The automatic registration includes power-up registration, power-down
registration, timer registration, zone registration, and distance-based registration as
well.
POWER_UP_REG (Power-up registration ID): It indicates whether startup
registration is allowed, that is, whether the MS is allowed to register automatically upon
being powered on and receiving system messages. When the value of this variable isset to 1, automatic registration is allowed, and when it is set to 0, automatic registration
is not allowed. In order to prevent repeated registration resulted from fast power-on
and power-off, the MS is not allowed to register until 20 seconds after it enters the idle
state.
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Internal Use
Explanation of important fields of SP.M
PARAMETER_REG (Parameter change registration ID): Whether the MS is
allowed to register automatically when certain parameters stored in it is changed.When this field is set to 1, it means allowed, and when it is set to 0, it means
unallowed. Examples of such parameters (all are set on the MS side) include
SLOT_ CYCLE_ INDEXp, SCMp, MOB_TERM_HOMEp /
MOB_TERM_FOR_SIDp, MOB_TERM_FOR_NIDp, the band classes, power
levels, and wireless configuration supported by the MS. Parameter change
registration will also be activated when there is no record corresponding to SIDand NID of BTS in SID_NID_LISTs stored in the MS. If parameter change occurs,
the MS deletes the SID_NID_LISTs.
REG _ PRD (Timer registration period): the timer-based registration period of
the MS. It is set to 0 when timer-based registration is disabled.
BASE _ LAT (BTS Latitude): To be configured according to the actual latitude of
BTS.
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Internal Use
Example of SP.M
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Internal Use
Sample of System Parameters Message
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Internal Use
Access parameter message
Sent on the paging channel
Important parameters in the message:
PILOT_PN,
Message sequence number.
Access channel number
NOM-P, INIT-P, P-STEP
Access probe number NUM-STEP
Maximum access channel message
capacity
Pilot frame number of access channel
Access overload level Continuous increment sent by access
attempt message
Correction sent by access attempt
message during registration
Access waiting time
Access channel probe time random
value
Access probe compensation
MAX-REQ-SEQ, MAX-RSP-SEQ
Authentication mode
Random query value of authentication
Extended rated sending power
Power Control
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Internal Use
Explanation of important fields of AP.M
PCN (Paging channel number): Each paging channel is configuredwith a record according to the number of paging channels actually
configured.
NUM_STEP (Access probe number): number of access probe
allowed in each access probe sequence. The greater the value, thegreater the probability of access in an access probe sequence, the
greater the interference in the reverse link when access fails. The
access performance is determined by parameters NUM_STEP,
PWR_STEP, and INIT_PWR.
PSIST0_9 (access load level 0~9 continuous): It is used to reduce
the access collisions.
For more details, please see the <<CDMA1X BSS Network Planning Parameter Configuration Guide>>
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Internal Use
Explanation of important fields of AP.M
REG_PSIST (registration continuous correction): It indicates continuous
correction of access attempt message during registration.
PROBE_PN_RAN (access probe random delay): It is used for calculating
the random delay of PN. In an access attempt, the precise transmission time
of the access channel is determined by a PN random process. The MS
transmit RN PN chips latter than the system time, RN being calculated by hash
function with the range of 0~2 PROBE_PN_RAN-1 PN chips.
ACC_TMO (Response time-out time): the response time-out time for access
probe, when it exceeds (2+ACC_TMO)*80ms, it will be considered that BTS
has not received messages from the access channel. The interval between
basic access and response is about 350ms, therefore the value of this
parameter should be 3 or greater.
For more details, please see the <<CDMA1X BSS Network Planning Parameter Configuration Guide>>
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Internal Use
Explanation of important fields of AP.M
PROBE_BKOFF (access probe delay): It indicates the maximum
delay between access probes in an access sequence. If the publicchannel multiplexing sub-layer sends all access probes in an access
sequence on the same R-ACH corresponding to the current F-PCH,
the next access probe is sent after an additional delay RT, which is
randomly generated from (0,1+PROBE_BKOFF) slots.
BKOFF (access probe sequence delay): The value of this parameter
is the maximum delay of the access probe sequence-1. For each
access probe sequence (except the first one), there is a sequence
delay RS generated randomly from (0,1+BKOFF).
MAX_REQ_SEQ (maximum number of probe sequences of access channel inquiry): It indicates the maximum number of access
probe sequences corresponding to an access channel request (e.g.
originating call).
For more details, please see the <<CDMA1X BSS Network Planning Parameter Configuration Guide>>
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Internal Use
Explanation of important fields of AP.M
MAX_RSP_SEQ (maximum number of probe sequences of accesschannel response): It is the maximum number of access probe
sequences corresponding to an access channel response (e.g. paging
response).
NOM_PWR_EXT (Extended nominal transmit power ): Used in openloop power estimation. Together with nominal power, it is used for
calibrating the offset of BTS transmit power from the nominal power.
PSIST_EMG: It indicates the continuous correction during emergency
calls by the MS at the load level of 0~9. This parameter is invalid if
PSIST_EMG_INCL is set to 0.
For more details, please see the <<CDMA1X BSS Network Planning Parameter Configuration Guide>>
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Internal Use
Explanation of important fields of AP.M
MAX_CAP_SZ: The maximum number of frames allowed by each
access channel message, which is set to 3. If the value set is too small,
BTS can not send originating call message containing lots of dial
numbers or Data burst Message. The greater the value set, the larger
access channel message allowed to be sent, but the more chance of
message conflict. Generally 4 frames are quite enough, even for the
longest Data Burst Message.
PAM_SZ: Length of access channel Preamble. Too great a value can
result in waste of access channel capacity, ie. if 1+PAM_SZ frames
carry no messages, less frames are enough for BTS to capture the MS.
Too small a value can lead to decreasing probability that BTS checks
the MS successfully and to more resent messages, (doubled at least).The adjustment of this parameter is related to the size of the search
window BTS Capture Access Channels.
For more details, please see the <<CDMA1X BSS Network Planning Parameter Configuration Guide>>
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Internal Use
Example of important fields of AP.M
E l ti f i t t fi ld f AP M
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Internal Use
Explanation of important fields of AP.M
N i hb li t
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Internal Use
Neighbour list message
Sent on the paging channel
Important parameters in the message: PILOT-PN, PILOT-INC
Information of neighbor pilot 1
Configuration of neighbor pilotPilot PN sequence offset index of neighbor
pilot
Information of neighbor pilot 2
……
Information of neighbor pilot N
Handoff
E t d d i hb li t
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Internal Use
Extended neighbour list message
E t d d i hb li t
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Internal Use
Extended neighbour list message
CDMA h l li t
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Internal Use
CDMA channel list message
Sent on the paging channel
Important parameters in the message:
PILOT-PN Assigned frequency of CDMA channels
(e.g. 201...)
Channel Info
E l ti f CCL M t
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Internal Use
Explanation of CCL.M parameters
Field Description Length
PILOT_PN Pilot PN sequence offset index. BTS pilot offset in 64PN
chips.9
CONFIG_MSG_S
EQ
Configuration message sequence number. 6
CDMA_FREQ
(one or more
fields)
Assigned CDMA frequency channel. The value of this field
is designed to support CDMA channels in sequence from
Channel 1 to Channel N. All CDMA channels that are
supported by the BTS and contain paging channels
should be listed in the table. CDMA frequency channels in
the primary set should first be listed.
11
I t t fi ld f CDMA li t
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Internal Use
Important fields of CDMA list message
E t d d t t
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Internal Use
Extended system parameter message
Pilot set update threshold
System reselect class parameter Access handover class
parameter
GPS auxiliary indication
Fast paging service class
parameter
Sent on the paging channel
Important parameters in the message:
PILOT_PN, Config-Msg-Seq
Adopted for TMSI, data length
TMSI data ID type of the primary access
channel for the MS
MCC
Broadcast slot cycle index
Minimum protocol revisionversion
Data traffic
E l ti f ESP M t
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Internal Use
Explanation of ESP.M parameters
BCASE_INDEX (broadcast slot cycle index): When periodical broadcast
paging is allowed, this parameter is set to any number from 1 to 7 to identifybroadcast slot cycle index, otherwise, it is set to 0.
IMSI_T_SUPPORTED (IMSI_T supported ID): If it is set to 1, it means that
IMSI_Ts consisting of 15 digits are supported.
PACKET_ZONE_ID (Packet data service zone ID): If packet data servicezone is supported, BTS will set this parameter to packet data service zone ID,
otherwise BTS will set it to 0.
MAX_NUM_ALT_SO: Maximum number of alternative services, identifying the
maximum number of alternative services the MS allows in Originating Message
and Paging Response Message.
RESELECT_INCLUDED: System reselect parameter included. If system
reselect parameter is included, set this parameter to 1, otherwise set it to 0.
E l ti f ESP M t
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Internal Use
PILOT_REPORT (pilot report order):
If the MS is required to report the additional pilots whose strength exceed
T_ADD in all access channel messages, BTS will set it to 1. If it is set to 0, they
will only be reported in Originating Message and Paging Response Message.
ACC_ENT_HO_ORDER (Access Entry handover order): If
NGHBR_SET_ENTRY_INFO is 1, BTS contains this field. Set
ACC_ENT_HO_ORDER to 1 if the MS is permitted to perform an access entry
handoff while performing the MS Order and Message Processing Operation in
the MS Idle State. Otherwise, the base station shall set this field to 0.
ACCESS_HO (access handover allowed order): If the value of NGHBR_SET_ACCESS_INFO is 1, BTS contains this field. Set ACCESS_HO
to 1 if the MS is allowed to perform access handover, otherwise set it to 0.
Explanation of ESP.M parameters
Example of ESP M
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Internal Use
Example of ESP.M
Extended system parameter message
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Internal Use
Extended system parameter message
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Internal Use
Chapter 1 Introduction
Chapter 2 Classification of system messages
Chapter 3 Contents of mandatory system messages
Chapter 4 Adjustment of system messages
Adjustment of system messages
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Internal Use
Adjustment of system messages
This command is executed to modify system message control
parameters, for example, setting the system messages to be sent.
Adjustment of system messages
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Internal Use
This command is executed to modify authentication
parameters.
Adjustment of system messages
Adjustment of system messages
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Internal Use
This command is executed to modify the in synchronizationchannel system message of specified sector carrier.
Adjustment of system messages
Adjustment of system messages
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Internal Use
This command is executed to modify part of system parameter
messages for the specified sector carrier.
Adjustment of system messages
Adjustment of system messages
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Internal Use
Adjustment of system messages
This command is executed to modify part of extended system
parameters of specified sector carrier.
Adjustment of system messages
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Adjustment of system messages
This command is executed to modify part of the parameters of
access channel message.