1-owo115010 wcdma ran13 ue behaviors in idle mode issue1.01

8/17/2019 1-Owo115010 Wcdma Ran13 Ue Behaviors in Idle Mode Issue1.01

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WCDMA UE Behaviors in Idle Mode

Confidential Information of Huawei. No Spreading Without Permission

P-1

PLMN selection

Used to ensure that the PLMN selected by the UE provides services properly.

System information reception

The network broadcasts the network information to the UE that camps on the cell. Uponreception of broadcast information, the UE obtains the network information and takesactions accordingly.

Cell selection and reselection

Used to ensure that the UE finds a suitable cell to camp on.

Location registration

This procedure is used by the UE to report its status to the network. This procedure is oftwo types: periodical location registration and the location registration necessitated by

changes in the location area. Paging procedure

Used for the network to send paging messages to a UE which is in idle mode, CELL_PCHstate, or URA_PCH state.

Access procedure

From the view of access stratum, access is the procedure the UE shift from idle mode toconnected mode.


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P-6

Typical scenario of first occasion is the first time a new UE is put into use.

The second occasion is very common.


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P-8

Equivalent PLMNs : The Mobile Equipment stores a list of "equivalent PLMNs". This list isreplaced at the end of each location update procedure or routing area update procedure.

The stored list consists of a list of equivalent PLMNs as downloaded by the network plusthe PLMN code of the registered PLMN that downloaded the list.


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P-9

The UE can get system information from PCCPCH, and the PLMN information istransmitted in MIB of PCCPCH.

After getting the MIB, the UE can judge whether the current PLMN is right one. If so, theUE will get SIB scheduling information from the MIB; if not, the UE will search anothercarrier, do this procedure again.

The priority order of automatic PLMN selection mode:

Order PLMN types Remark

1 HPLMNs Home PLMNs

2 PLMNs contained in the “User Controlled PLMNSelector with Access Technology” data filed in the

SIM excluding the previously selected PLMN

The PLMNs are arranged inpriority order

3 PLMNs contained in the “Operator Controlled PLMN

Selector with Access Technology” data filed in the

SIM excluding the previously selected PLMN

The PLMNs are arranged in

priority order

4 Other PLMN/Access technology combinations with

the high quality of received signals excluding the

previously selected PLMN


priority order

5 Other PLMN/Access technology combinations

excluding the previously selected PLMN


the descending order of

signal quality

6 Previously selected PLMN The PLMN selected by the

UE before automatic PLMN

selection


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P-10

The MCC and MNC, which are in the PLMN identity of the HPLMN, match the MCC andMNC in the IMSI of the UE.

Except the HPLMNs, the PLMNs that the UE camps on are defined as VPLMNs.

For the PLMN selection in the VPLMN, a value of T minutes may be stored in the SIM.Either T is in the range 6 minutes to 8 hours with a step of 6 minutes or T indicates that noperiodic attempts shall be made. If no value is stored in the SIM, a default value of 60minutes is used.

When the UE attempts to access the HPLMN or the PLMN with higher priority, the UEmust adhere to the following rules:

After the UE is switched on, a period of at least two minutes and at most Tminutes shall elapse before the first attempt is made.

Periodic attempts shall be performed only by the UE in idle mode. Only the priority levels of equivalent PLMNs of the same country (which serve as

the current serving VPLMN) can be compared with the priority level of a selectedPLMN.


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P-11


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P-12

System information is used for the network to broadcast network information to UEscamping on a cell so as to control the behavior of UEs.

MIB

When selecting a new cell, the UE reads the MIB. The UE may locate the MIB bypredefined scheduling information. The IEs in the MIB includes MIB value tag,PLMN type, PLMN identity, reference and scheduling information for a number ofSIBs in a cell or one or two SBs in a cell.

SB

Scheduling Block (SB) gives reference and scheduling information to other SIBs.

SIB

System Information Block (SIB) contains actual system information. It consists of

system information elements (IEs) with the same purpose. Scheduling information for an SIB may only be included in either the MIB or one of the SB.

UE may use the scheduling information in the MIB and SB to locate each SIB to beacquired. If UE received an SIB in a position according to the scheduling information andconsiders the contents as valid, UE will read and store the SIB.


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P-13

SIB4: contains parameters for cell selection and cell re-selection while UE is in connectedmode.

SIB6: contains parameters for the common physical channels of the cell while UE is inconnected mode.

SIB8: contains the CPCH static information.

SIB9: contains the CPCH dynamic information.

SIB10: contains information to be used by UEs having their DCH controlled by a DRACprocedure. Used in FDD mode only. To be used in CELL_DCH state only. Changes so often,its decoding is controlled by a timer.

SIB12: contains measurement controlling information in connecting mode.

SIB13: contains ANSI-41 system information.

SIB14: contains the information in TDD mode. SIB15: contains the position service information.

SIB16: contains the needed pre-configuration information for handover from other RAT toUTRAN.

SIB17: contains the configuration information for TDD.

SIB18: contains the PLMN identities of the neighboring cells.

To be used in shared networks to help with the cell reselection process.

SIB19: contains Inter-RAT frequency and priority information to be used in the cell.


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P-14

The typical scenarios when the UE read system include the followings :

Before cell selection

After cell reselection

Before location/route update

When the UE enter idle mode from connected mode

……


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P-18

Initial cell selection: If no cell information is stored for the PLMN, the UE starts the initialcell selection. For this procedure, the UE need not know in advance which Radio

Frequency (RF) channels are UTRA bearers. The UE scans all RF channels in the UTRA bandaccording to its capabilities to find a suitable cell of the selected PLMN. On each carrier,the UE need only search for the strongest cell. Once a suitable cell is found, this cell shallbe selected.

Stored information of cell selection: For this procedure, the UE has to know the centralfrequency information and other optional cell parameters that are obtained from themeasurement control information received before, such as scrambling codes. After thisprocedure is started, the UE selects a suitable cell if any. Otherwise, the "Initial cellselection" procedure is triggered.


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P-19

If the pilot strength and quality of one cell meet S criteria, UE will stay in this cell and getother system information. Then, UE will initiate a location update registration process.

If the cell doesn’t satisfy S criteria, UE will get adjacent cells information from SIB11. Then,UE will judge weather these cells satisfy S criteria. If the adjacent cell is suitable, UE willstay in the adjacent cell.

If no cell satisfies S criteria, UE will take the area as dead zone and continue the PLMNselection and reselection procedure.

Parameter Description

Squal Cell selection quality value (dB)

Srxlev Cell selection RX level value (dBm)

Qqualmeas Measured cell quality value. The quality of the received signal indicated in

average CPICH Ec/No (dB) for current cell

Qrxlevmeas Measured cell RX level value. This RX level of the received signal indicated

CPICH RSCP (dBm) for current cell

Qqualmin Minimum required quality level in the cell (dB)

Qrxlevmin Minimum required RX level in the cell (dBm)

Pcompensation Max (UE_TXPWR_MAX_RACH – P_MAX, 0) (dB)

UE_TXPWR_M

AX_RACH

MaxAllowedUlTxPower , Max allowed UE UL Tx Power (dBm)

P_MAX Maximum RF output power of the UE (dBm)


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Qqualmin

Content: The minimum required quality level corresponding to CPICH Ec/No. The

UE can camp on the cell only when the measured CPICH Ec/No is greater than thevalue of this parameter.

Value range: -24~0

Physical value range: -24~0; step: 1

Physical unit: dB

Set this parameter through ADD UCELLSELRESEL, query it through LSTUCELLSELRESEL, and modify it through MOD UCELLSELRESEL.

Qrelevmin

Content: The minimum required RX level corresponding to CPICH RSCP. The UE

can camp on the cell only when the measured CPICH RSCP is greater than thevalue of this parameter.

Value range: -58~-13

Physical value range: -115~-25; step: 2 (-58: -115, -57: -113, ..., -13 :-25)

Physical unit: dBm



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MaxAllowedUlTxPower

Content: The maximum allowed uplink transmit power of a UE in the cell, which is

related to the network planning.

Value range: -50~33


Physical unit: dBm



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P-23

If Squal > Sintrasearch, the UE need not start the intra-frequency measurement.

If Squal ≤ Sintrasearch, the UE need to start the intra-frequency measurement.

If system messages do not contain Sintrasearch, the UE always need to start the intra-frequency measurement.

Parameters of the measurement start criteria:

Name Description

Squal Cell quality value (dB)

Qqualmin Minimum required quality level in the cell (dB)

Sintrasearch Measurement threshold for UE to trigger intra-frequency cell reselection

Sintersearch Measurement threshold for UE to trigger inter-frequency cell reselection S searchRATm Measurement threshold for UE to trigger inter-RAT cell reselection


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P-24

If Squal > Sintersearch, the UE need not start the inter-frequency measurement.

If Squal ≤ Sintersearch, the UE need to start the inter-frequency measurement.

If system messages do not contain Sintersearch, the UE always need to start the inter-frequency measurement.


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P-25

If Squal > SsearchRATm, the UE need not start the inter-RAT measurement.

If Squal ≤ SsearchRATm, the UE need to start the inter-RAT measurement.

If system messages do not contain SsearchRATm, the UE always need to start the inter-RAT measurement.


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IdleSintrasearch

Content: A threshold for intra-frequency cell reselection in idle mode. When the

quality (CPICH Ec/No measured by UE) of the serving cell is lower than thisthreshold plus the [Qqualmin] of the cell, the intra-frequency cell reselectionprocedure will be started. This parameter is not configured when its value is 127.

Value range: {{-16~10}, {127}}


Physical unit: dB


ConnSintrasearch

Content: A threshold for intra-frequency cell reselection in connect mode. Whenthe quality (CPICH Ec/No measured by UE) of the serving cell is lower than thisthreshold plus the [Qqualmin] of the cell, the intra-frequency cell reselectionprocedure will be started. This parameter is not configured when its value is 127.

Value range: {{-16~10}, {127}}


Physical unit: dB



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P-27

IdleSintersearch

Content: A threshold for inter-frequency cell reselection in idle mode. When the

quality (CPICH Ec/No measured by UE) of the serving cell is lower than thisthreshold plus the [Qqualmin] of the cell, the inter-frequency cell reselectionprocedure will be started. This parameter is not configured when its value is 127.

Value range: {{-16~10}, {127}}


Physical unit: dB


ConnSintersearch

Content: A threshold for inter-frequency cell reselection in connect mode. Whenthe quality (CPICH Ec/No measured by UE) of the serving cell is lower than thisthreshold plus the [Qqualmin] of the cell, the inter-frequency cell reselectionprocedure will be started. This parameter is not configured when its value is 127.

Value range: {{-16~10}, {127}}


Physical unit: dB



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SearchRat

Content: A threshold for inter-RAT cell reselection. When the quality (CPICH Ec/No

measured by UE) of the serving cell is lower than this threshold plus the [Qqualmin]of the cell, the inter-RAT cell reselection procedure will be started. This parameteris not configured when its value is 127.

Value range: {{-16~10}, {127}}


Physical unit: dB



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P-29

The intra-frequency, inter-frequency, and inter-RAT measurement criteria are as shown inthe above figure.

The intra-frequency cell reselection has a priority higher than the inter-frequency cellreselection and inter-RAT cell reselection, the intra-frequency cell reselection startthreshold should be higher than the inter-frequency cell reselection start threshold andinter-RAT cell reselection start threshold.

If the cell reselection threshold is set to a comparatively high value, the UE may frequentlystart cell reselections, and the battery of the UE may be largely consumed. If the cellreselection threshold is set to a comparatively low value, it is difficult for cell reselectionsto be started, and the UE may not timely reside in the cells with good quality, affecting thequality of communication between the UTRAN and the UE. For detailed information, referto 3GPP TS 25.304.


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P-31

In Rs, s means serving cell. In Rn, n means neighbor cell.

The offset Qoffset1s,n is used for Qoffsets,n to calculate Rn. The hysteresis Qhyst1s is used

for Qhysts to calculate Rs.

The UE shall rank the cells according to the R criterion, derive Qmeas,n and Qmeas,s andcalculate the R values, as described in the following cases:

If a TDD or GSM cell is ranked as the best cell, the UE shall reselect that TDD orGSM cell.

If an FDD cell is ranked as the best cell and the quality measure for cell selectionand reselection is set to CPICH RSCP (QualMeas = CPICH_RSCP), the UE shallreselect that FDD cell.

If an FDD cell is ranked as the best cell and the quality measure for cell selection

and reselection is set to CPICH Ec/N0 (QualMeas = CPICH_ECNO), the UE shallperform a second ranking of the FDD cells according to the R criteria specifiedabove. In this case, however, the UE uses the measurement quantity CPICH Ec/N0for deriving the Qmeas,n and Qmeas,s and then calculating the R values of theFDD cells. The offset Qoffset2s,n is used for Qoffsets,n to calculate Rn, thehysteresis Qhyst2s is used for Qhysts to calculate Rs.


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P-32

In all the previous cases, the UE can reselect a new cell only when the following conditionsare met:

The new cell is better ranked than the serving cell during a time intervalTreselections.

More than one second has elapsed since the UE camped on the current serving cell.


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P-33

QualMeas

Content: Measurement quantity of cell selection and reselection. It can be set to

CPICH Ec/N0 or CPICH RSCP.

Value range: CPICH_ECNO(CPICH Ec/N0), CPICH_RSCP(CPICH RSCP)

Physical value range: CPICH_ECNO, CPICH_RSCP

Physical unit: None


Treselections

Content: If the signal quality of a neighboring cell is better than that of the servingcell during the specified time of this parameter, the UE reselects the neighboring

cell. It is used to avoid ping-pong reselection between different cells. Value range: 0~31

Physical value range: 0~31; step: 1

Physical unit: s



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P-34

IdleQhyst1s

Content: The hysteresis value of the serving FDD cells in idle mode in case the

quality measurement for cell selection and reselection is set to CPICH RSCP. It isrelated to the slow fading feature of the area where the cell is located. The greaterthe slow fading variance is, the greater this parameter.

Value range: 0~20


Physical unit: dB


ConnQhyst1s

Content: The hysteresis value of the serving FDD cells in connected mode in casethe quality measurement for cell selection and reselection is set to CPICH RSCP. It isrelated to the slow fading feature of the area where the cell is located. The greaterthe slow fading variance is, the greater this parameter .

Value range: 0~20


Physical unit: dB



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P-35

IdleQhyst2s

Content: The hysteresis value of the serving FDD cells in idle mode in case the

quality measurement for cell selection and reselection is set to CPICH Ec/No. It isrelated to the slow fading feature of the area where the cell is located. The greaterthe slow fading variance is, the greater this parameter.

Value range: {{0~20}, {255}}


Physical unit: dB


ConnQhyst2s

Content: The hysteresis value of the serving FDD cells in connected mode in casethe quality measurement for cell selection and reselection is set to CPICH Ec/No. Itis related to the slow fading feature of the area where the cell is located. Thegreater the slow fading variance is, the greater this parameter.

Value range: {{0~20}, {255}}


Physical unit: dB



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P-36

IdleQoffset1sn

Content: Offset of cell CPICH RSCP measurement value in cell selection or

reselection when the UE is in idle mode.

Value range: -50~50

Physical value range: -50~+50; step: 1

Physical unit: dB

Set this parameter through ADD UINTRAFREQNCELL / ADD UINTERFREQNCELL,query it through LST UINTRAFREQNCELL / LST UINTERFREQNCELL, and modify itthrough MOD UINTRAFREQNCELL / MOD UINTERFREQNCELL.

ConnQoffset1sn

Content: Offset of cell CPICH RSCP measurement value in cell selection or

reselection when the UE is in connected mode. Value range: -50~50

Physical value range: -50~+50; step: 1

Physical unit: dB



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IdleQoffset2sn

Content: Offset of cell CPICH Ec/No measurement value in cell selection or

reselection when the UE is in idle mode.

Value range: -50~50


Physical unit: dB


ConnQoffset2sn

Content: Offset of cell CPICH Ec/No measurement value in cell selection or

reselection when the UE is in connected mode. Value range: -50~50


Physical unit: dB



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SibCfgBitMap

Content: Determine whether some system information blocks are broadcast in this

cell. If the corresponding system information block is selected, then send thissystem information block in this cell.

Value range: SIB2, SIB4, SIB12, SIB18, SIB19, SIB11BIS

Set this parameter through ADD UCELLSIBSWITCH, query it through LSTUCELLSIBSWITCH, and modify it through MOD UCELLSIBSWITCH.


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SPriority

Content: This parameter indicates the absolute priority level of the serving cell

when the UE performs cell reselection. The greater the absolute priority level of theserving cell is, the harder the UE performs cell reselection, the smaller the absolutepriority level of the serving cell is, the easier the UE performs cell reselection.

Value range: 0~7


NPriority

Content: This parameter specifies the absolute priority level of the E-UTRAfrequency. The greater the value of this parameter is, the easier the UE reselects a

cell on this frequency, the smaller the value of this parameter is, the harder the UEreselects a cell on this frequency.

Value range: 0~7

Set this parameter through ADD UCELLNFREQPRIOINFO, query it through LSTUCELLNFREQPRIOINFO, and modify it through MOD UCELLNFREQPRIOINFO.


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P-41

The absolute priorities of LTE frequencies that are configured for the serving cell must bedifferent from the absolute priority of the serving cell. In this case, the criteria for

triggering inter-RAT measurement are as follows: If some neighboring LTE cells have higher absolute priorities than the serving cell,

the UE measures these LTE cells

If some neighboring LTE cells have lower absolute priorities than the serving cell,the UE measures these LTE cells under the condition Srxlev ServingCell


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P-42

ThdPrioritySearch1

Content: This parameter specifies the minimum CPICH RSCP value that triggers the UE to

measure cells on low-priority frequencies. That is, subtract the minimum CPICH RSCP(Qrxlevmin) from the CPICH RSCP of the serving cell. If the obtained number is no greater

than the value of this parameter, UE measures cells on low-priority frequencies. The greater

the value of this parameter is, the easier the UE measures cells for priority-based cell

reselection, the smaller the value of this parameter is, the harder the UE measures cells forpriority-based cell reselection.

Unit : dB . Value range: 0~31. Actual Value Range : {0~62}, Step : 2

Set this parameter through ADD UCELLSELRESEL, query it through LST UCELLSELRESEL, andmodify it through MOD UCELLSELRESEL.

ThdPrioritySearch2

Content: This parameter specifies the minimum CPICH Ec/No value that triggers the UE tomeasure cells on low-priority frequencies. That is, subtract the minimum CPICH Ec/No

(Qqualmin) from the CPICH Ec/No value of the serving cell. If the obtained number is no

greater than the value of this parameter, UE measures cells on low-priority frequencies. Thegreater the value of this parameter is, the easier the UE measures cells for priority-based cell

reselection, the smaller the value of this parameter is, the harder the UE measures cells for

priority-based cell reselection. For details on this parameter.

Unit : dB. Value range: 0~7

Set this parameter through ADD UCELLSELRESEL, query it through LST UCELLSELRESEL, and

modify it through MOD UCELLSELRESEL.


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If there are multiple cells meeting these conditions, the UE reselects the cell with thehighest absolute priority. If there are multiple cells with the same highest absolute priority,

the UE reselects the cell with the highest SrxlevnonServingCell.


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P-44

Srxlev nonServingCell is greater than Threshhigh, and the duration exceeds Treselection, thereselection of UMTS to LTE will be triggered.

Threshhigh is determined by the parameter ThdToHigh, respectively. The parameter can beset by using the ADD UCELLNFREQPRIOINFO or MOD UCELLNFREQPRIOINFO command

Treselection is determined by the parameter Treselections.


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P-45

Criteria 2 is defined by :

Srxlev nonServingCell is greater than Threshlow , and the duration exceeds Treselection

Srxlev ServingCell has remained below Thresh serving,low for a period of time longer thanTreselection, or Squal ServingCell has remained below 0 for a period of time longerthan Treselection

Threshlow is determined by the parameter ThdToLow , Thresh serving,low is determined by theparameter ThdServingLow, these parameters can be set by using the ADDUCELLNFREQPRIOINFO or MOD UCELLNFREQPRIOINFO command.


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P-48

ThdToHigh

Content: This parameter specifies the RSRP above which the UE performs cell reselection

from the serving cell to a cell on the target frequency when the absolute priority level ofthe target frequency is greater than that of the serving cell. That is, subtract the minimum

required RSRP threshold of the E-UTRA cell(EQrxlevmin) from the RSRP of the cell on the

target frequency, If the obtained number is greater than the value of this parameter during

the interval defined by Treselection, the UE performs cell reselection. The greater the valueof this parameter is, the harder the UE reselects a cell on the target frequency, the smaller

the value of this parameter is, the easier the UE reselects a cell on the target frequency.


Set this parameter through ADD UCELLNFREQPRIOINFO, query it through LST

UCELLNFREQPRIOINFO, and modify it through MOD UCELLNFREQPRIOINFO.

ThdToLow

Content: This parameter specifies the RSRP above which the UE performs cell reselection

from the serving cell to a cell on the target frequency when the absolute priority level of

the target frequency is smaller than that of the serving cell. That is, subtract the minimumrequired RSRP threshold of the E-UTRA cell(EQrxlevmin) from the RSRP of the cell on the

target frequency, If the obtained number is greater than the value of this parameter and

the RSCP or Ec/No of UMTS serving cell condition of of low-prio-freq reselection is met

during the interval defined by Treselection, the UE performs cell reselection. The greater the

value of this parameter is, the harder the UE reselects a cell on the target frequency, the

smaller the value of this parameter is, the easier the UE reselects a cell on the targetfrequency.


Set this parameter through ADD UCELLNFREQPRIOINFO, query it through LSTUCELLNFREQPRIOINFO, and modify it through MOD UCELLNFREQPRIOINFO.


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ThdServingLow

Content: This parameter specifies CPICH RSCP value of the serving cell below which the UE

initiates cell reselection to a cell on the frequency with lower priority level. That is, subtractthe minimum CPICH RSCP (Qrxlevmin) from the CPICH RSCP of the serving cell. If the

obtained number is smaller than the value of this and other reselection conditions are met,

the UE performs cell reselection. The greater the value of this parameter is, the easier the

UE performs priority-based cell reselection, the smaller the value of this parameter is, theharder the UE performs priority-based cell reselection.


Set this parameter through ADD UCELLSELRESEL, query it through LST UCELLSELRESEL, andmodify it through MOD UCELLSELRESEL.

EQrxlevmin

Content:This parameter indicates the minimum required RSRP of the cell on the targetfrequency. During cell reselection decision, the Srxlev is obtained by the RSRP of the cell on

the target frequency measured by the UE minus the value of this parameter. If the Srxlev is

greater than the parameter of the target cell during the interval defined by Treselections,

the UE performs cell reselection to the target cell. The value of this parameter is set during

network planning. The greater the value of this parameter is, the harder the UE reselects acell on this frequency, the smaller the value of this parameter is, the easier the UE reselects

a cell on this frequency. For details on this parameter, see 3GPP TS 25.304.

Unit : dBm . Value range: -70~-22. Actual Value Range : -140~-44. Step : 2

Set this parameter through ADD UCELLNFREQPRIOINFO, query it through LST

UCELLNFREQPRIOINFO, and modify it through MOD UCELLNFREQPRIOINFO.


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P-51

Location registration is used for the PLMN to trace the current status of the UE. Locationregistration ensures that the UE is connected to the network when the UE does not

perform any operation for a long period. The UE performs normal location registration in the following conditions:

After being switched on, the UE selects a suitable cell that belongs to a new LA orRA. That is, the LA or RA is different from that recorded in the USIM before theswitch-off of the UE.

The UE in idle mode enters the cell of a new LA or RA.

CS domain location registration signaling is shown as following :

UEInitial Direct Transfer

(location update request) Initial UE Message

(location update request)

Direct Transfer

(location update accept)Downlink Direct Transfer

(location update accept)

RNC CN

Initial Direct Transfer

(IMSI detach indication)

Initial UE Message

(IMSI detach indication)

Normal Location Updating

Periodic UpdatingIMSI Attach


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P-52

Periodic location registration may be used to periodically notify the network of theavailability of the UE.

The value of T3212 is sent by the network to the UE in SIB1. The value of T3312 is sent bythe network to the UE in the NAS messages ATTACH ACCEPT and ROUTING AREAUPDATE ACCEPT. The value of T3312 shall be unique within an RA.

T3312 signaling procedure is shown as following :

T3312 is sent to UE in the two following scenarios.

UE


(routing area update request) Initial UE Message

(routing area update request) Direct Transfer

(routing area update accept)Downlink Direct Transfer

(routing area update accept)

RNC CN

UE RNC CN


(attach request) Initial UE Message

(attach request)

Direct Transfer (attach accept)Downlink Direct Transfer

(attach accept)

periodic RA update timer

periodic RA update timer

RA Updating

Periodic Updating


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P-53

If the UE still stays in the same LA after being switched on again, the UE shall perform anLR request indicating IMSI attach. Otherwise, the UE shall perform an LR request indicating

normal location update. When the IMSI attach/detach operation applies, the UE shall send the IMSI detach

message to the network when the UE is switched off or the SIM is removed while being inthe UPDATED state. This IMSI detach message will not be acknowledged by the network.

The system information contains an indicator indicating whether the IMSI attach/detachoperation is mandatory in the cell. The UE shall operate in accordance with the receivedvalue of the indicator.


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T3212

Content: This parameter indicates the time length of the periodical location update.

Periodical location update is implemented by MS through the location updateprocedure. 0: The periodical update procedure is not used. This parameter is validonly when [CN domain ID] is set as CS_DOMAIN.

Value range: 0~255


Physical unit: min

Set this parameter through ADD UCNDOMAIN, query it through LST UCNDOMAIN,modify it through MOD UCNDOMAIN.

ATT

Content: Indicating whether attach/detach is allowed. NOT_ALLOWED indicatesthat MS cannot apply the IMSI attach/detach procedure. ALLOWED indicates thatMS can apply the IMSI attach/detach procedure. This parameter is valid only when[CN domain ID] is set as CS_DOMAIN.

Value range: NOT_ALLOWED, ALLOWED

Physical value range: NOT_ALLOWED, ALLOWED

Physical unit: None

Set this parameter through ADD UCNDOMAIN, query it through LST UCNDOMAIN,modify it through MOD UCNDOMAIN.


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P-55


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P-56

For CN originated paging:

In order to request UTRAN connect to UE, CN initiates the paging procedure,

transmits paging message to the UTRAN through Iu interface, and UTRANtransmits the paging message from CN to UE through the paging procedure on Uuinterface, which will make the UE initiate a signaling connection setup process withthe CN.

For UTRAN originated paging:

UE state transition: In order to trigger UE in the CELL_PCH or URA_PCH state tocarry out state transition (for example, transition to the CELL_FACH state), theUTRAN will perform a paging process. Meanwhile, the UE will initiate a cell updateor URA update process, as a reply to the paging.

When the cell system message is updated: When system messages change, theUTRAN will trigger paging process in order to inform UE in the idle, CELL_PCH orURA_PCH state to carry out the system message update, so that the UE can readthe updated system message.


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P-57

Paging type 1:

The message is transmitted in one LA or RA for idle mode, or in one cell for

CELL_PCH state, or in one URA for URA_PCH state.

After calculating the paging time, the paging message will be transmitted at thattime.

If UE is in CELL_PCH or URA_PCH state, the UTRAN transmits the paginginformation in PAGING TYPE 1 message to UE. After received paging message, UEperforms a cell update or URA update procedure to transit state to CELL_FACH.

As shown in the above figure, the CN initiates paging in a location area (LA), which iscovered by two RNCs. After receiving a paging message, the RNC searches all the cellscorresponding to the LAI, and then calculates the paging time, at which it will send thePAGING TYPE 1 message to these cells through the PCCH.


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P-58

Paging type 2:

If UE is in CELL_DCH or CELL_FACH state，the paging message will be transmittedon DCCH with paging type 2.

The message will be only transmitted in a cell.

As shown in the above figure, if the UE is in the CELL_DCH or CELL_FACH state, theUTRAN will immediately transmit PAGING TYPE 2 message to the paged UE on DCCHchannel.


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P-59

Paging Reception Process : When UE stays in idle mode, CELL_PCH or URA_PCH state, theUE receives paging indicator from the PICH firstly, then reads the paging information on

the S-CCPCH. The DRX paging period formula:

DRX Cycle Length ＝ MAX(2k , PBP) frames

K is the “CN domain specific DRX cycle length coefficient”, which is broadcasted inSIB1. The typical value is 6.

PBP is Paging Block Periodicity , which is 1 for FDD mode.

The paging period should be 640ms if K is 6.


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P-60

Paging SFN formula:

Paging Occasion (CELL SFN) = {(IMSI div K) mod (DRX cycle length div PBP)} *PBP +

n *DRX cycle length + Frame Offset

n =0, 1, 2……and the requirement is the calculated CELL SFN must be below itsmaximum value 4095.

Frame Offset is 0 for FDD mode.

K is the number of SCCPCH which carries PCH, and the typical value is 1.

The formula cloud be simplified as: SFN = IMSI mod (DRX cycle length) + n * (DRXcycle length).

Paging Occasion(CELL SFN) Case :

One UE’s IMSI = 460010912121001, DRX cycle length = 64 frames, the value of

the paging occasion for the UE is shown as the red point in the above figure, inthese paging occasion(CELL SFN), the UE will read paging indicator from PICH


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P-61

SFN is the paging occasion of the UE

As shown in the followed figure, the UE needs to monitor the frames (paging occasions)

indicated by the red dots, and then decodes the qth PI of this frame.

¡ £¡ £¡ £

0

2^K-1

0 4095

¡ £¡ £¡ £

P I P I P I P I¡ £¡ £¡ £¡ £¡ £¡ £

0 1 q

NP

-1

One DRX cycle


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P-62

The timing relationship between PICH and SCCPCH is defined by the above figure,

and the interval is 3 slots duration (2ms, 7680 chips).


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P-63

DRXCyclelenCoef

Content: This parameter is broadcasted on SIB1. This parameter is used when a UE

is in idle mode.

Value range: 6~9

Physical value range: 6~9

Physical unit: None

Set this parameter through ADD UCNDOMAIN, query it through LST UCNDOMAIN,and modify it through MOD UCNDOMAIN.

PICHMode

Content: Indicating the number of PIs contained in each frame on the PICH.

Value range: V18, V36, V72, V144

Physical value range: 18, 36, 72, 144

Physical unit: None

Set this parameter through ADD UPICH, query it through LST UPICH.


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P-64

MaccPageRepeatTimes

Content: This parameter defines the times of retransmission of paging messages. If

the times of retransmission exceeds the value of this parameter, retransmissionstops. For details, refer to the 3GPP TS 25.331 protocol.

Value range: 0~2


Physical unit: None

Set this parameter through SET UDPUCFGDATA, query it through LSTUDPUCFGDATA.


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P-65


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P-66

The most important difference between idle mode and connected mode is whether UE hasRRC connection with UTRAN or not.

In idle mode, UE will be identified by IMSI, TMSI or PTMSI and so on.

In connected mode, UE will be identified by URNTI (UTRAN Radio Network TemporaryIdentity), which is the ID of one RRC connection.


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P-67

This process may happen in the following typical scenarios:

Attach and detach

LA update and RA update

Signaling connection for services


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P-68

UE will transmit the preamble at the access time slot.

Access frame is composed of two 10ms radio frames, which is divided into 15 access time

slot, and 5120 chips for each slot.

The PRACH access slots, AICH access slots and their time offset are showed in the abovefigure.


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P-69

A RACH sub-channel defines a sub-set of the total set of uplink access slots. There are atotal of 12 RACH sub-channels.

Set Preamble signatures and RACH sub-channel no. through ADD UPRACHBASIC, querythem through LST UPRACH.


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P-70

If UE1 can use all sub channels(0 ~ 11).

If UE2 can only use sub channels (0~2).

p-p: time interval between two PRACH preambles.


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P-71

For Frequency Division Duplex (FDD) mode, the PRACH resources include access timeslotsand preamble signatures, which can be classified into several ASCs, so as to provide RACH

applications with different priorities. The ASCs range from 0 to 7, and the quantity of ASCs is 8. "0" indicates the highest

priority and "7" indicates the lowest priority.

Set ASC of PRACH through ADD UPRACHASC, modify it through MOD UPRACHASC, andremove it through RMV UPRACHASC.


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P-72

The access class number is stored in the SIM/USIM.

Access class 0~9 are allocated to all the users. And these 10 classes show the same priority.

Access class 11~15 are allocated to specific high priority users as follows. (Theenumeration is not meant as a priority sequence):

Access class 15: PLMN staff

Access class 14: users subscribing to emergency services

Access class 13: public organizations

Access class 12: users subscribing to security services

Access class 11: users responsible for PLMN management

Access Class 10 indicates whether or not network access for Emergency Calls is allowedfor UEs with access classes 0 to 9 or without an IMSI. For UEs with access classes 11 to 15,Emergency Calls are not allowed if both "Access class 10" and the relevant Access Class(11 to 15) are barred. Otherwise, Emergency Calls are allowed.


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P-73

Set the mapping between AC and ASC through ADD UPRACHACTOASCMAP, modify itthrough MOD UPRACHACTOASCMAP, and remove it through RMV

UPRACHACTOASCMAP.


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P-74

START

Choose a RACH sub-channel from

available ones

Get available signatures

Set Preamble Retrans Max

Set Preamble_Initial_Power

Send a preamble

Check the corresponding AI

Change message part power by

p-m based on preamble power

Set physical status to be RACH

message transmitted Set physical status to be Nackon AICH received

Choose a access slot again

Counter > 0 & Commanded

preamble power - maximum

allowed power


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P-76

When a UE needs network service, it first sets up RRC connection as follows:

The UE sends a RRC CONNECTION REQUEST message from the cell where it

camps to the RNC.

The RNC allocates related resources for the UE and sends an RRC CONNECTION SETUP message to the UE.

The UE sends a RRC CONNECTION SETUP COMPLETE message to the RNC. TheRRC connection setup ends.


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P-77

T300

Content: T300 is started when UE sends the RRC CONNECTION REQUEST

message. It is stopped when UE receives the RRC CONNECTION SETUP message.RRC CONNECTION REQUEST will be resent upon the expiry of the timer if V300is lower than or equal to N300, else enter idle mode.

Value range: D100, D200, D400, D600, D800, D1000, D1200, D1400, D1600,D1800, D2000, D3000, D4000, D6000, D8000

Physical value range: 100, 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800,2000, 3000, 4000, 6000, 8000

Physical unit: ms

Set this parameter through SET UIDLEMODETIMER, query it through LST

UIDLEMODETIMER. N300

Content: Maximum number of retransmissions of the RRC CONNECTIONREQUEST message.

Value range: 0~7


Physical unit: None

Set this parameter through SET UIDLEMODETIMER, query it through LSTUIDLEMODETIMER.


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P-78


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P-79

T381

Content: T381 is started after the RNC send message "RRC CONNECTION SETUP“.

If T381 expire and RNC does not receive "RRC CONNECTION SETUP COMPLETE”and V381(initiate value is 0 ) is smaller than N381, RNC resend "RRC CONNECTIONSETUP“ and restart timer T381 and increase V381 by 1. If RNC receive "RRCCONNECTION SETUP COMPLETE“, T381 will be stopped.

Value range: D0, D100, D200, D300, D400, D500, D600, D700, D800, D900,D1000, D1200, D1500, D2000

Actual value range: 0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1200,1500, 2000

Unit: ms

Set this parameter through SET UCONNMODETIMER, query it through LSTUCONNMODETIMER.

N381

Content: Maximum number of resend times of message "RRC CONNECTIONSETUP".

Value range: D1, D2, D3, D4

Actual value range: 1, 2, 3, 4

Set this parameter through SET UCONNMODETIMER, query it through LSTUCONNMODETIMER.


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RrcCause

Content: This parameter specifies the cause of RRC connection establishment, that

is, the value of the Establishment cause IE in the RRC CONNECTION REQUEST message.

Value range: ORIGCONVCALLEST, ORIGSTREAMCALLEST, ORIGINTERCALLEST,ORIGBKGCALLEST, ORIGSUBSTRAFFCALLEST, TERMCONVCALLEST,TERMSTREAMCALLEST, TERMINTERCALLEST, TERMBKGCALLEST, EMERGCALLEST,INTERRATCELLRESELEST, INTERRATCELLCHGORDEREST, REGISTEST, DETACHEST,ORIGHIGHPRIORSIGEST, ORIGLOWPRIORSIGEST, CALLREEST,TERMHIGHPRIORSIGEST, TERMLOWPRIORSIGEST, TERMCAUSEUNKNOWN,MBMSCALLEST, DEFAULTEST

Set this parameter through SET URRCESTCAUSE, query it through LST

URRCESTCAUSE.


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WCDMA UE Behaviors in Idle Mode P-84

1-owo115010 wcdma ran13 ue behaviors in idle mode issue1.01

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