02-ue behaviors in idle mode

RAN Feature Description Table of Contents

Table of Contents

Chapter 2 UE Behaviors in Idle Mode........................................................................................2-1

2.1 Introduction to UE Behaviors in Idle Mode.......................................................................2-1

2.1.1 Definition...............................................................................................................2-1

2.1.2 Purposes...............................................................................................................2-1

2.1.3 Terms and Abbreviations.......................................................................................2-1

2.2 Availability........................................................................................................................ 2-4

2.2.1 Network Elements Involved...................................................................................2-4

2.2.2 Software Releases................................................................................................2-4

2.2.3 Miscellaneous........................................................................................................2-5

2.3 Impact.............................................................................................................................. 2-5

2.3.1 Impact on System Performance............................................................................2-5

2.3.2 Impact on Other Features......................................................................................2-5

2.4 Restrictions...................................................................................................................... 2-5

2.5 Technical Description.......................................................................................................2-5

2.5.1 UE Behaviors in Idle Mode Configuration Model...................................................2-5

2.5.2 Overview...............................................................................................................2-6

2.5.3 PLMN Selection.....................................................................................................2-7

2.5.4 PLMN Selection in HPLMNs..................................................................................2-7

2.5.5 PLMN Selection in VPLMNs................................................................................2-10

2.5.6 Cell Selection.......................................................................................................2-11

2.5.7 Cell Reselection...................................................................................................2-17

2.5.8 Location Registration...........................................................................................2-27

2.5.9 Paging................................................................................................................. 2-30

2.5.10 System Information Reception...........................................................................2-31

2.6 Capabilities....................................................................................................................2-33

2.7 Implementation..............................................................................................................2-33

2.7.1 Enabling UE Behaviors in Idle Mode...................................................................2-33

2.7.2 Reconfiguring Parameters...................................................................................2-33

2.7.3 Disabling UE Behaviors in Idle Mode..................................................................2-34

2.8 Maintenance Information................................................................................................2-34

2.8.1 Alarms.................................................................................................................2-34

2.8.2 Counters..............................................................................................................2-34

2.9 References..................................................................................................................... 2-35

Huawei Technologies Proprietary

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RAN Feature Description List of Figures

List of Figures

Figure 2-1 UE Behaviors in Idle Mode configuration model..................................................2-6

Figure 2-2 UE behaviors in idle mode...................................................................................2-6

Figure 2-3 Signaling procedure for the automatic PLMN selection.......................................2-9

Figure 2-4 Signaling procedure for the manual PLMN selection.........................................2-10

Figure 2-5 Procedure for cell selection...............................................................................2-12

Figure 2-6 Signaling procedure for the cell selection controlled by the NAS (performed by the

AS)............................................................................................................................... 2-16

Figure 2-7 Signaling procedure for cell selection controlled by the NAS (performed by the

NAS)............................................................................................................................. 2-16

Figure 2-8 Measurement start criteria for cell reselection with HCS disabled.....................2-17

Figure 2-9 Cell reselection procedure.................................................................................2-26


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RAN Feature Description List of Tables

List of Tables

Table 2-1 NEs required for UE behaviors in idle mode..........................................................2-4

Table 2-2 RAN products and related versions.......................................................................2-4

Table 2-3 Automatic PLMN selection mode...........................................................................2-7

Table 2-4 UE state transition...............................................................................................2-13

Table 2-5 Parameters of the measurement start criteria......................................................2-18

Table 2-6 MML parameters that correspond to the measurement parameters....................2-18

Table 2-7 Intra- and inter-frequency measurement criteria for UE in slow movement.........2-20

Table 2-8 Inter-RAT measurement criteria for UE in slow movement..................................2-21

Table 2-9 Intra- and inter-frequency measurement criteria for UE in fast movement..........2-21

Table 2-10 Inter-RAT measurement criteria for UE in fast movement.................................2-21

Table 2-11 Parameters of the measurement start criteria....................................................2-21

Table 2-12 MML parameters that correspond to the measurement parameters..................2-22

Table 2-13 UE state transition conditions............................................................................2-27

Table 2-14 Commands for the reconfiguration on the RNC side.........................................2-33

Table 2-15 Counters related to UE behavior in idle mode...................................................2-34


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RAN Feature Description Chapter 2 UE Behaviors in Idle Mode

Chapter 2 UE Behaviors in Idle Mode

2.1 Introduction to UE Behaviors in Idle Mode

2.1.1 Definition

UE behaviors in idle mode refers to a series of automatic actions for obtaining a

service before finding a network or for obtaining a better service after connecting to

the network.

UE behaviors in idle mode include:

PLMN selection

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

Cell selection and reselection

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

Location registration

Used for the network to trace the current status of the UE and to ensure that the

UE is camped on the network when the UE does not perform any operation for a

long period.

Paging

Used for the network to send paging messages to a UE which is in idle mode,

CELL_PCH state, or URA_PCH state.

System information reception

The network broadcasts the network information to a UE which camps on the cell

to control the behaviors of the UE.

2.1.2 Purposes

When a UE is switched on, it selects a PLMN and searches for a suitable cell of this

PLMN to camp on. This feature has the following benefits:

It enables the UE to receive system information from the PLMN

It enables the UE to establish the RRC connection

It enables the UE to response to “paging” message

It enables the UE to receive cell broadcast services


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2.1.3 Terms and Abbreviations

I. Terms

Term Description

Any cell selection In this state, the UE attempts to find an acceptable cell of any

PLMN to camp on.

Camped normally In this state, the UE obtains normal services.

Camped on any

cell

In this state, the UE obtains limited services. The UE select a

cell through cell selection/reselection. Where, the PLMN

identity is not considered.

EPLMN A PLMN considered as equivalent to the selected PLMN by

the UE for PLMN selection, cell selection, cell reselection and

handover according to the information provided by the NAS.

Ec/N0 Ratio of received energy per chip to noise spectral density.

HPLMN Home PLMN, where the MCC and MNC of the PLMN identity

are the same as the MCC and MNC of the IMSI.

URA identity UTRAN Registration Area identity. It can be used to indicate

the UE which URA it shall use in case of overlapping URAs.

VPLMN Visited PLMN. It is different from HPLMN.

Radio access

technology

Type of radio access technology, for example, UTRA or GSM.

Radio access

technology

combination

Combination of different radio access technologies.

Available PLMN A PLMN in which the UE has found at least one cell and the

UE has read its PLMN identity.

Acceptable cell A cell on which the UE may camp to obtain limited services,

for example, originating emergency calls

Suitable cell A cell on which the UE may camp to obtain normal services


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II. Abbreviations

Abbreviation Full Spelling

3GPP 3rd Generation Partnership Project

AS Access Stratum

BCH Broadcast Channel

CN Core Network

DRX Discontinuous Reception

EF Elementary File

EPLMN Equivalent PLMN

FDD Frequency Division Duplex

GPRS General Packet Radio Service

GSM Global System for Mobile Communications

HCS Hierarchical Cell Structure

HPLMN Home PLMN

IMSI International Mobile Subscriber Identity

LAC Location Area Code

LAI Location Area Identity

LR Location Registration

MCC Mobile Country Code

MIB Master Information Block

MNC Mobile Network Code

MS Mobile Station

NAS Non-Access Stratum

PCH Paging Channel

PI Paging Indicator

PLMN Public Land Mobile Network

RAI Routing Area Identity


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Abbreviation Full Spelling

RAT Radio Access Technology

RF Radio Frequency

RRC Radio Resource Control

RSCP Received Signal Code Power

SB Scheduling Block

S-CCPCH Secondary Common Control Physical Channel

SFN System Frame Number

SIB System Information Block

SIM Subscriber Identity Module

TDD Time Division Duplex

TMSI Temporary Mobile Subscriber Identity

UE User Equipment

UMTS Universal Mobile Telecommunications System

URA UTRAN Registration Area

USIM UMTS Subscriber Identity Module

UTRA UMTS Terrestrial Radio Access

UTRAN UMTS Terrestrial Radio Access Network

VPLMN Visited PLMN

WCDMA Wideband CDMA

2.2 Availability

2.2.1 Network Elements Involved

Table 2-1 describes the NEs involved with UE behaviors in idle mode.


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Table 2-1 NEs required for UE behaviors in idle mode

UE NodeB RNC MSC Server MGW SGSN GGSN HLR

√ √ √ - - - - -

Note:

–: not required

√: required

Note:

This chapter describes only the availability of the NodeB and the RNC.

2.2.2 Software Releases

Table 2-2 describes the versions of RAN products that support UE’s behaviors in idle

mode.

Table 2-2 RAN products and related versions

Product Version

RNC BSC6800 V100R002 and later releases

NodeB

DBS3800 V100R005 and later releases

BTS3812A V100R005 and later releases

BTS3812E V100R005 and later releases

2.2.3 Miscellaneous

None

2.3 Impact

2.3.1 Impact on System Performance

This feature is affected by the capability of the UE and the network status.

The capability of the UE affects the quality of receiving signals.

The load of the network affects UE’s accessing to a cell. When the load is heavy,

the UE may fail to access to the cell.


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2.3.2 Impact on Other Features

None.

2.4 Restrictions

None

2.5 Technical Description

2.5.1 UE Behaviors in Idle Mode Configuration Model

The configuration model for UE Behaviors in Idle Mode is as show in.

HCS cell reselection threshold

HCS inter-rat reselection threshold

Max number of cell reselection

HCS search inter-rat limit threshold

Frequency Band Indication

CNDOMAIN.Class

DRX cycle length coefficient

Hysteresis 1 for connect mode

Hysteresis 2 for connect mode

Cell Sel-reselection quality measure

Min quality level

Intra-freq cell reselection threshold for idle state

Inter-freq cell reselection threshold for idle state

Inter-RAT cell reselection threshold

CellClass

CELLSELRESEL .Class

CELLHCS .Class

CELLSIBSWITCH .Class

RNC

RadioClass

GlobalParaClass

Figure 2-2 UE Behaviors in Idle Mode configuration model

2.5.2 Overview

Figure 2-3 shows the relationship between UE behaviors in idle mode.


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PLMN selection

and reselection

Location

registration

PLMNsavailable

PLMNselected

Locationregistration

changes

NAS defined service areas

Automatic/Manual selection

CM requests

NAS definedservice areas

Radiomeasurement

Cell selectionand reselection

User selection of PLMN

Indication to user

Locationregistrationresponse

Figure 2-3 UE behaviors in idle mode

After the switch-on, the UE performs the following steps:

1) Select a PLMN.

2) Select cells from this PLMN.

3) Select a best cell according to the system information.

4) Camp on this cell.

5) Initiate a location registration.

The signal strengths of both the serving cell and neighboring cells vary when the UE

moves. Therefore the UE needs to select a most suitable cell to camp on. This

procedure is called cell reselection.

2.5.3 PLMN Selection

UE shall maintain a list of allowed PLMN types. In the PLMN list, the UE arranges

available PLMNs by priorities. When selecting a PLMN, it searches the PLMNs from

the high priority to the low.

The UE selects a PLMN from HPLMNs or VPLMNs.

There are two modes for PLMN selection

Automatic selection

The UE automatically selects a PLMN according to the priority order.


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Manual selection

The UE shows all available PLMNs to the subscriber. The subscriber then

selects a PLMN.

2.5.4 PLMN Selection in HPLMNs

I. Scenario

At any time, the subscriber may require the UE to reselect an available PLMN and

register in it. For UEs in different modes, there are two selection modes:

Automatic PLMN Selection

Manual PLMN Selection

II. Automatic PLMN Selection Mode

The UE selects an available and suitable PLMN from the whole band according to the

order as described as Table 2-1.

Table 2-1 Automatic PLMN selection mode

Order PLMN type Remark

1 HPLMNs Home PLMNs

2

PLMNs contained in the "User Controlled

PLMN Selector with Access Technology"

data field in the SIM excluding the previously

selected PLMN

The PLMNs are arranged

in priority order

3

PLMNs contained in the "Operator

Controlled PLMN Selector with Access

Technology" data field in the SIM excluding

the previously selected PLMN


in priority order

4

Other PLMN/access technology

combinations with the high quality of

received signals excluding the previously

selected PLMN


in random order

5

Other PLMN/access technology

combinations excluding the previously

selected PLMN


in descending order of

signal quality.

6 Previously selected PLMN

The PLMN selected by the

UE before automatic

PLMN selection


8


Note:

If the UE selects a PLMN that has been selected before and the UE does not attempt

to register in any other PLMN, the UE need not register in the PLMN again.

III. Manual PLMN Selection Mode

The order of manual selection is the same as that of automatic selection.

IV. Signaling Procedure for the Automatic PLMN Selection

Figure 2-2 shows the procedure for the automatic PLMN selection.

UE-NAS UE-AS

Use last storedcell list, if any

PLMNReselection

1.RRC PLMN LIST IND(all PLMN identity(GSM-MAP) or SID/MIN_P_REV)

2.RRC PLMN Search REQ(PLMN identity(GSM-MAP) or SID/MIN_P_REV)

3.RRC PLMN Search CNF(PLMN identity (GSM-MAP) or SID)

Figure 2-2 Signaling procedure for the automatic PLMN selection

The signaling procedure of the automatic PLMN selection is described as follows:

1) After the timer of the NAS is started, the AS sends the NAS a list which includes

all available PLMNs and their identities.

6) After the PLMN with the highest priority is found, the NAS sends the AS an RRC

PLMN Search REQ message, asking the AS to select a suitable cell that

belongs to the PLMN with highest priority.

7) After finding such a cell, the AS selects the cell and sends the NAS an RRC

PLMN Search CNF message, indicating that the PLMN is found.


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V. Signaling Procedure for the Manual PLMN Selection

Figure 2-1 shows the signaling procedure for the manual PLMN selection.

UE-NAS UE-AS

Use last stored

cell list, if any

PLMN

Selection

2. RRC PLMN LIST CNF(all PLMN identity(GSM-MAP) or SID/MIN_P_REV)

3. RRC PLMN Search REQ

(PLMN identity(GSM-MAP) or SID/MIN_P_REV)

4. RRC PLMN Search CNF(PLMN identity (GSM-MAP) or SID)

1. RRC PLMN Search REQ(ALL)

Figure 2-1 Signaling procedure for the manual PLMN selection

See the description of the signaling procedure as follows:

1) The NAS sends the AS an RRC PLMN Search REQ message, asking the AS to

report the available PLMNs.

8) The AS sends the NAS a list which includes all available PLMNs and their

identities.

9) After the PLMN with the highest priority is found, the NAS asks the AS to select a

suitable cell that belongs to the PLMN with highest priority.

10) After finding such a cell, the AS selects this cell and sends the NAS an RRC

PLMN Search CNF message, indicating that the PLMN is found.

2.5.5 PLMN Selection in VPLMNs

If a UE is in a VPLMN, it scans the “user controlled PLMN selector” field or the

“operator controlled PLMN selector” field in the PLMN list to find the HPLMN or the

PLMN with higher priority according to the requirement of the automatic PLMN

selection mode. In this way, the UE periodically attempts to obtain services.

If the UE stores the “Equivalent PLMNs” list and there is a PLMN which has

higher priority than any other PLMN in the country, the UE selects only this

PLMN. For this purpose, a value of T minutes may be stored in the SIM. T is


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either in the range from 6 minutes to 8 hours in 6-minute steps or it indicates that

no periodic attempts shall be made. If no value is stored in the SIM, a default

value of 60 minutes is used.

The UE must obey the following rules when attempting to access the HPLMN or the

PLMN with higher priority:

The periodic attempts shall only be performed in automatic mode when the UE is

roaming.

After the UE is switched on, a period of at least 2 minutes and at most T minutes

shall elapse before the first attempt is made.

The UE shall make an attempt if the UE is on the VPLMN at time T after the last

attempt.

Periodic attempts shall only be performed by the UE when the UE is in idle

mode.

If the HPLMN or higher priority PLMN is not found, the UE shall remain on the

VPLMN.

The attempts by the UE in a PLMN with higher priority to access another PLMN

in the same country must be limited.

Only the priority levels of Equivalent PLMNs of the same country as the current

serving VPLMN can be compared with the priority level of a selected PLMN.

2.5.6 Cell Selection

I. Overview

When the PLMN is selected and the UE is in idle mode, the UE starts to select a cell

to camp on and to obtain services.

II. Algorithm

There are four states involved in cell selection:

Camped normally

Any cell selection

Camped on any cell

Connected mode

The cell selection is of two types:

Initial cell selection

If no cell information is stored for the PLMN, the UE starts this procedure.

Stored information cell selection

If cell information is stored for the PLMN, the UE starts this procedure.

As shown in Figure 2-1, in any state, the selection of a new PLMN leads the whole

procedure back to position 1.


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Initialcell Selection

USIM inserted

go here whenever anew PLMN is

selected

1no cell informationstored for the PLMN

cell informationstored for the PLMN

Storedinformation

cell selectionno suitable cell found

no suitablecell found

Cell selectionwhen leaving

connected mode

2

suitablecell found Camped

normally

suitable cellfound


leaveidle mode

return toidle mode

CellreselectionevaluationProcess

suitablecell found

trigger


1Cell Selectionwhen leaving

connectedmode

no acceptable cell found

acceptablecell found


2

leave idle modereturn idle mode

Connectedmode(Emergency

calls only)

Cellreselectionevaluation

Process


no acceptablecell found

NAS indicates thatregistration on selectedPLMN is rejected(except with cause #14

or #15 [5][16])

suitable cellfound

A

Any cellselection

B

Camped onany cell

C

Connectedmode

D1

D2

suitablecell found

trigger

go herewhen noUSIM inthe UE

Figure 2-1 Procedure for cell selection

The two procedures are described as follows.


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Initial cell selection

If no cell information is stored for the PLMN, the UE starts the initial cell 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 band

according 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 shall be selected.

Table 2-1 shows the transition of the UE states after the initial cell selection is started.

Table 2-1 UE state transition

No. If Then

1 The UE finds a suitable cell

The UE selects this cell and enters in the

"Camped normally" state, as shown in state A

in Figure 2-1

After leaving this state, the UE enters the

corresponding state according to No. 2 or 4 in

this table.

2The UE does not find a

suitable cell

The UE enters the “Any Cell Selection” state,

as shown in state B in Figure 2-1.


corresponding state according to No. 3 in this

table.

3The UE finds an acceptable

cell

The UE enters the “Camped on any cell”

state, as shown in state C in Figure 2-1.



this table.

4

The UE in the state of

“Camped normally” leaves

idle mode

The UE enters the connected mode, as

shown in state D1 in Figure 2-1.

5

The UE in the state of

“Camped on any cell”

leaves idle mode

The UE enters the connected mode

(emergency cells only), as shown in D2 in

Figure 2-1.



this table.


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Stored information cell selection

For this procedure, the UE need know the central frequency information and other

optional cell parameters that are obtained from the measurement control information

received before, such as scrambling codes.

After this procedure is started, the UE selects a suitable cell if it finds one. Otherwise,

the “Initial cell selection” procedure is triggered.

III. Cell Selection Criteria

The cell selection criterion S is fulfilled when:

For FDD cells, Srxlev > 0 and Squal >0

For TDD cells, Srxlev > 0

Where,

Squal = Qqualmeas – Qqualmin

Srxlev = Qrxlevmeas - Qrxlevmin - Pcompensation

Parameter Description

Squal

Cell selection quality value (dB).

Applicable only for FDD cells.

Srxlev Cell selection RX level value (dB).

Qqualmeas

Measured cell quality value.

The quality of the received signal expressed in

average CPICH Ec/N0 (dB) for FDD cells.

Applicable only for FDD cells.

Qrxlevmeas

Measured cell RX level value.

It is the CPICH RSCP of received signal for FDD cells

(dBm), and the P-CCPCH RSCP of received signal

for TDD cells (dBm).

Qqualmin

Minimum required quality level in the cell (dB).

Applicable only for FDD cells. Corresponding MML

parameter is Min quality level

Qrxlevmin

Minimum required RX level in the cell (dBm).

Corresponding MML parameter is Min RX level

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


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Parameter Description

UE_TXPWR_MAX_RACH

Maximum TX power level an UE may use when

accessing the cell on RACH (read in system

information) (dBm). Corresponding MML parameter is

Max allowed UE UL TX power

P_MAX Maximum RF output power of the UE (dBm).

Parameter name Min quality level

Parameter ID QQUALMIN

GUI range -24–0

Physical range& unit -24–0, dB

Default value -18

Optional / Mandatory Optional

MML command MOD CELLSELRESEL

Description:

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 the value

of this parameter.


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Parameter name Min RX level

Parameter ID QRXLEVMIN

GUI range -58–-13

Physical range& unit -115–-25; step: 2 (-58:-115; -57:-113; ..., -

13:25 ) (dBm)

Default value -58



Description:

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 the value

of this parameter.

Parameter name Max allowed UE UL TX power

Parameter ID MAXALLOWEDULTXPOWER

GUI range -58–-13

Physical range& unit dBm

Default value 24



Description:

The maximum allowed uplink transmit power of a UE in the cell, which is related to

the network planning. Content: Allowed maximum power transmitted on RACH in

the cell.


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IV. Signaling Procedures

UE-NAS UE-AS

Cell selection and reselection

RRC Cell Selection Control REQ(e.g. Forbidden registratoin area(s),desired

NAS defined service area(s))

Figure 2-2 Signaling procedure for the cell selection controlled by the NAS

(performed by the AS)

The NAS can affect the cell selection and reselection by sending control information

to the AS. The information is useful when the AS performs cell selection or

reselection.

Cell Selection and reselectionwithin the area selected by NAS

2 .RRC Area List RSP(selected area)(e.g. PLMNID,registration area,NAS defined service area)

Registration /servicearea selection

1.RRC Area List IND(all areas)(e.g. PLMNID,registration area,NAS defined service area)

UE-NAS UE-AS

Figure 2-3 Signaling procedure for cell selection controlled by the NAS (performed by

the NAS)

See the description of the signaling procedure as follows:

1) The AS sends the NAS the cell selection information that includes the PLMN

identity and all available registration areas.

2) The NAS sends the AS these registration areas.

3) The AS selects or reselects a cell in the selected registration area.


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2.5.7 Cell Reselection

I. Overview

After selecting a cell and camping on it, the UE periodically searches for a better cell

according to the cell reselection criteria. The better cell is the most suitable one for

the UE to camp on and obtain services. The QoS of this cell is not necessarily more

satisfying. If finding such a cell, the UE selects this cell to camp on.

Cell reselection criteria can be adjusted by modifying cell reselection parameters

according to network operation policies. The Hierarchical Cell Structure (HCS), if

used, may affect the measurement start criteria for cell reselection.

II. Algorithm

In idle mode, the cell reselection procedure is as shown in Figure 2-1. The transition

of UE states is the same as that in cell selection. See section 2.5.6 “Cell Selection."

III. Measurement Start Criteria

4) HCS Disabled

If the system messages broadcast by the serving cell indicates that the HCS is

disabled, the intra-frequency, inter-frequency, and inter-RAT measurement criteria are

as shown in Figure 2-1.

CPICH Ec/N0Threshold of

Qqualmin

Sintersearch +Qqualmin

Sintrasearch +Qqualmin

Better quality

SsearchRATm +Qqualmin

Intra-frequency

measurement

Inter-frequency

measurement

Inter-RATmeasurement

Measuringinter-RAT

neighboring cells

Measuring inter-frequencyneighboring cells

Measuring intra-frequency neighboring cells

Measurementnot started

Figure 2-1 Measurement start criteria for cell reselection with HCS disabled

Intra-frequency measurement

- If Squal > Sintrasearch, the UE does not need to start the intra-frequency

measurement.

- If Squal ≤ Sintrasearch, the UE starts the intra-frequency measurement.


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- If system messages do not contain Sintrasearch, the intra-frequency

measurement is always started.

Inter-frequency measurement

- If Squal > Sintersearch, the UE does not need to start the inter-frequency

measurement.

- If Squal ≤ Sintersearch, the UE starts the inter-frequency measurement.

- If system messages do not contain Sintrasearch, the inter-frequency

measurement is always started.

Inter-RAT measurement

- If Squal > SsearchRATm, the UE does not need to start the inter-RAT

measurement.

- If Squal ≤ SsearchRATm, the UE starts the inter-RAT measurement.

- If system messages do not contain Sintrasearch, the inter-RAT measurement is

always started.

Table 2-1 Parameters of the measurement start criteria

Name Description

Qqualmin

Minimum QoS level required by Frequency Division Duplex (FDD)

cells only.

Squal Cell quality value (dB) required by FDD cells.

Sintrasearch

Measurement threshold for UE to trigger intra-frequency cell

reselection, compared with Squal.

Sintersearch

Measurement threshold for UE to trigger inter-frequency cell


Srxlev Receive level (dB) required by cell selection.

SsearchRATm

Measurement threshold for UE to trigger inter-RAT cell reselection,

compared with Squal.

The following table lists the MML parameters that correspond to the measurement

parameters.

Table 2-2 MML parameters that correspond to the measurement parameters

Name MML parameter

Sintrasearch Intra-freq cell reselection threshold for idle state

Sintersearch Inter-freq cell reselection threshold for idle state

SsearchRATm Inter-RAT cell reselection threshold


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Parameters:

Parameter name Intra-freq cell reselection threshold for idle state

Parameter ID IDLESINTRASEARCH

GUI range -16–10

Physical range& unit -32–20; step: 2(dB)

Default value 2



Description:

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 this threshold

plus the [Qqualmin] of the cell, the intra-frequency cell reselection procedure will

be started.

Parameter name Inter-freq cell reselection threshold for idle state

Parameter ID IDLESINTERSEARCH

GUI range -16–10

Physical range& unit -32 to 20; step: 2(dB)

Default value 2



Description:

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 this threshold

plus the [Qqualmin] of the cell, the inter-frequency cell reselection procedure will

be started.


20


Parameter name Inter-RAT cell reselection threshold

Parameter ID SSEARCHRAT

GUI range -16–10

Physical range& unit -32–20; step: 2(dB)

Default value 2



Description:

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.

5) HCS Enabled

When the HCS is enabled, the measurement criteria for the UE in movement are

listed in Table 2-1, Table 2-2, Table 2-3, and Table 2-4.

Intra-frequency and inter-frequency measurement criteria for UE in slow

movement

Table 2-1 Intra- and inter-frequency measurement criteria for UE in slow movement

Condition Result

Srxlev ≤ SsearchHCS, or Squal ≤

Sintersearch

All intra-frequency and inter-frequency cells are

measured.

Squal ≤ Sintrasearch

Intra-frequency and inter-frequency cells are

measured with their HCS level no lower than that

of the current cell.

Squal > Sintrasearch

Intra- and inter-frequency cells are measured with

their HCS level higher than that of the current cell.

Sintrasearch not delivered

All intra-frequency cells are measured.

Inter-frequency cells are measured with their HCS

level higher than that of the current cell.

SsearchHCS or Sintersearch not

deliveredAll intra- and inter-frequency cells are measured.


21


The HCS of intra-frequency neighboring cells of a cell is usually consistent with that of

the cell. If the Squal of the current cell is good enough, that is, Squal > Sintrasearch, the UE

only needs to compare the Squal in these cells with different HCS.

Inter-RAT measurement criteria for UE in slow movement

Table 2-2 Inter-RAT measurement criteria for UE in slow movement

Condition Result

Srxlev ≤ SHCS,RATm, or Squal ≤

SSearchRATm

Inter-RAT cells are measured.

Squal ≤ Slimit,SearchRATm

Inter-RAT cells are measured with their HCS level no

lower than that of the current cell.

Squal > Slimit,SearchRATm The UE does not need to measure inter-RAT cells.

SHCS,RATm not delivered Inter-RAT cells are measured.

Intra-frequency and inter-frequency measurement criteria for UE in fast

movement

Table 2-3 Intra- and inter-frequency measurement criteria for UE in fast movement

Condition Result

Srxlev ≤ SsearchHCS, or Squal ≤

Sintersearch

All intra- and inter-frequency cells are measured.

Others such as Srxlev and Squal

are good.

All intra- and inter-frequency cells are measured

with their HCS level no higher than that of the

current cell.

SsearchHCS or Sintersearch not

deliveredAll intra- and inter-frequency cells are measured.

Inter-RAT measurement criteria for UE in fast movement

Table 2-4 Inter-RAT measurement criteria for UE in fast movement

Condition Result

Srxlev ≤ SHCS,RATm, or Squal ≤

SSearchRATm

Inter-RAT cells are measured.


22


Condition Result

Others such as Srxlev and Squal

are good.

All inter-RAT cells are measured with their HCS

level no higher than that of the current cell.

SHCS,RATm or SSearchRATm not

deliveredInter-RAT cells are measured.

Table 2-5 describes all the parameters of the measurement start criteria.

Table 2-5 Parameters of the measurement start criteria

Name Description

Qqualmin

Minimum QoS level required by Frequency Division Duplex (FDD)

cells only.

Squal Cell quality value (dB) required by FDD cells.

Sintrasearch

Measurement threshold for UE to trigger intra-frequency cell


Sintersearch



SsearchHCS


reselection, compared with Srxlevs.

Srxlev Receive level (dB) required by cell selection.

SsearchRATm


compared with Squal.

SHCS,RATm


compared with Srxlevs.

Slimit,SearchRATm

Measurement threshold for UE in slow movement to trigger inter-

RAT cell reselection, compared with Squal.

The following table lists the MML parameters that correspond to the measurement

parameters.

Table 2-6 MML parameters that correspond to the measurement parameters

Name MML parameter

SsearchHCS HCS cell reselection threshold


23


Name MML parameter

SHCS,RATm HCS inter-rat reselection threshold

Slimit,SearchRATm HCS search inter-rat limit threshold

Parameters:

Parameter name HCS cell reselection threshold

Parameter ID SSEARCHHCS

GUI range -53–45

Physical range& unit -105–91; step: 2 (-53:-105; -52:-103; ..., 45:91) (dB)

Default value 0


MML command MOD CELLHCS

Description:

Threshold of HCS cell reselection in the same system.

Parameter name HCS inter-rat reselection threshold

Parameter ID SHCSRAT

GUI range -53–45

Physical range& unit -105–91; step: 2 (-53:-105; -52:-103; ..., 45:91) (dB)

Default value 0



Description:

Threshold of HCS cell reselection between different systems.


24


Parameter name HCS search inter-rat limit threshold

Parameter ID SLIMITSEARCHRAT

0GUI range -16–10

Physical range& unit -32–20; step: 2 (dB)

Default value 0



Description:

Limit threshold of HCS cell reselection between different systems. The UE will not

start inter-RAT measurement if it detects that the quality of the serving cell is

higher than this threshold.

IV. Cell Reselection Criteria

The following cell reselection criteria are used for intra-frequency cells, inter-

frequency cells and inter-RAT cells.

The quality level threshold criterion H for the HCS is used to determine whether the

prioritized ranking based on the hierarchical cell reselection rules shall apply. The

criterion is defined by:

Hs = Qmeas,s - Qhcss

Hn = Qmeas,n - Qhcsn – TOn * Ln

If the system information indicates that the HCS is not used, the quality level

threshold criterion H does not apply.

The cell-ranking criterion R is defined by:

Rs = Qmeas,s + Qhysts

Rn = Qmeas,n - Qoffsets,n - TOn * (1 – Ln)

Where,


25


TOn = TEMP_OFFSETn * W(PENALTY_TIMEn – Tn)

Ln = 0 if HCS_PRIOn = HCS_PRIOs

Ln = 1 if HCS_PRIOn <> HCS_PRIOs

W(x) = 0 for x < 0W(x) = 1 for x >= 0

TEMP_OFFSETn applies as an offset to the R criteria for the duration of

PENALTY_TIMEn after a timer Tn is started for that neighboring cell.

TEMP_OFFSETn and PENALTY_TIMEn are only applicable when the system

information indicates that the HCS is enabled.

The UE shall rank the following cells that fulfill the S criterion.

All cells that have the highest HCS_PRIO among those cells that fulfill the

criterion H 0. Note that this rule is not applicable when UE high-mobility is

detected.

All cells, not considering HCS priority levels, if no cell fulfills the criterion H 0.

This case is also applicable when the system information indicates that the HCS

is disabled, that is, when the serving cell does not belong to a HCS.

The cells are ranked according to the R criteria specified above, deriving Qmeas,n

and Qmeas,s and calculating the R values.

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

is used for Qhysts to calculate Rs.

If the system information indicates that HCS is enabled, TEMP_OFFSET1n is

used for TEMP_OFFSETn to calculate TOn. Otherwise, TEMP_OFFSETn is not

applied when calculating Rn. The best ranked cell is the cell with the highest R

value.

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

GSM cell.

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

and reselection is set to CPICH RSCP, the UE shall reselect 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, the UE shall perform a second ranking of

the FDD cells according to the R criteria specified above.

In this case, however, the UE uses the measurement quantity CPICH Ec/N0 for

deriving the Qmeas,n and Qmeas,s and then calculating the R values of the

FDD cells. The offset Qoffset2s,n is used for Qoffsets,n to calculate Rn, the

hysteresis Qhyst2s is used for Qhysts to calculate Rs.

If the system information indicates that the HCS is enabled, TEMP_OFFSET2n

is used to calculate TOn. Otherwise, TEMP_OFFSETn is not applied when


26


calculating Rn. Following this second ranking, the UE shall reselect the best

ranked FDD cell.

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

conditions are met:

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

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

cell.

Figure 2-2 shows the cell reselection procedure in which the measurement start and

criteria relations are described. The actual procedure varies with UE implementation.

filter cells withSx (Squal)

Cell ReselctionTriggered

calculateSx (Squal)

chooseintra-freq./inter-freq./inter-RATmeasurements according to

Sx (Squal) andUE Velocity

UE Velocityand HCS usage

rankingall measured cells

according toR criteria

filtermeasured cells with

H criteria

rankingmeasured cells with

Highest HCS Priorityaccording to

R criteria

rankingall measured cells

according toR criteria

non-HCSenvironment

orfor Fast UE (HCS)

fornon-Fast UE

(HCS)

if no cellfullfill

H criteria

for cellsfullfill

H criteria

keep rankingduring Treselection

withScaling Rules

UE reselectnew cell

Figure 2-2 Cell reselection procedure


27


Name Description

R criteria R decision criteria

H criteria H decision criteria

Treselection Time of cell reselection decision

2.5.8 Location Registration

I. Overview

The location registration is used for the PLMN to trace the current status of the UE

and to ensure that the UE is connected with the network when the UE does not

perform any operation for a long period. The location registration includes location

update (for non-GPRS) and route update (for GPRS).

According to whether to perform the location registration or not, the UE enters

different states as follows:

If the SIM exists and the location registration is unneeded, the UE enters the

Updated state.

If the SIM exists and the location registration is needed, the UE sends a location

registration request.

If the SIM does not exist, the UE enters the No IMSI state.

The purposes of location update and route update are to enable the UE to perform

GPRS or non-GPRS operations. Table 2-1 shows the conditions of UE state

transition.

Table 2-1 UE state transition conditions

UE State Condition of entering this state

non-GPRS

Updated An LR request is accepted.

Roaming

not

allowed

The UE receives an LR reject message with either of the

following causes:

a) PLMN not allowed

b) Location area not allowed

c) Roaming not allowed in this location area

d) No suitable cells in location area


28


UE State Condition of entering this state

Not

Updated

Any LR failure not specified for the state ‘Roaming not

allowed’ or ‘Idle, No IMSI’ occurs, for which the UE is not

certain whether or not the network has received and

accepted the LR attempt.

GPRS

Updated A Location Registration request is accepted.

Idle, No

IMSIThere is no SIM.

Roaming

not

allowed


following causes:

a) PLMN not allowed




e) Illegal ME

f) Illegal UE

g) GPRS services and non-GPRS services not allowed

h) GPRS services not allowed in this PLMN

Not

Updated

Any LR failure not specified for state ‘Roaming not

allowed’ or ‘Idle, No IMSI’ occurs, in which the UE is not

certain whether or not the network has received and

accepted the LR attempt.

Roaming

not

allowed


following causes:

a) PLMN not allowed




II. Algorithm

Periodic Location Registration

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

availability of the UE. It is controlled by a Periodic Location Update timer (T3212, for


29


non-GPRS operation) or a Periodic Routing Area Update timer (T3312, for GPRS

operation):

The value range of T3212(corresponding MML parameters: Periodical location

update timer) is 0–255 (unit: 1/10 hr; granularity: 1/10 hr)

Suppose the UE is switched on or the system information indicates that periodic

location registration shall be applied, and the timer is not running. Then the timer

shall be loaded with a random value between 0 and the broadcast or signaled

time-out value and started. For example, t1 is the new T3212 timeout value.

Then the new timer shall be started randomly at a value between 0 and t1.

When the timer reaches its expiry value, it shall be initiated with respect to the

relevant time-out value. The UE shall initiate the periodic location registration

corresponding to the expired timer, and the started.

T3212 shall be prevented from triggering periodic location update in connected

mode. When the UE returns to idle mode, T3212 shall be initiated with respect to

the broadcast time-out value, and then started. The UE shall initiate the periodic

location registration corresponding to the expired timer.

T3312 shall be prevented from triggering periodic routing area update in Ready

state. At transition from Ready to Standby state, T3312 shall be initiated with

respect to its time-out value, and then started. The UE shall initiate the periodic

location registration corresponding to the expired timer.

If the UE performs a successful combined routing area update, T3212 shall be

prevented from triggering periodic location update. This prevention shall be

performed until the UE starts location update, for example, because a network

operation mode changes or the UE uses non-GPRS services only.

When the serving cell changes or the broadcast/signaled time-out value

changes, the timeout value shall change accordingly. Here, the related timer

shall be reloaded.

Suppose t1 is the new T3212 timeout value and t is the current timer value. Then

the timer shall be restarted with the value of t mod t1.

The value of T3212 is sent by the network to the UE in SIB 1.

The value of T3312 is sent by the network to the UE in the messages ATTACH

ACCEPT and ROUTING AREA UPDATE ACCEPT. The value of T3312 shall be

unique within an RA.


30


Parameter name Periodical location update timer

Parameter ID T3212

GUI range 0–255

Physical range& unit 6 min

Default value 10


MML command MOD CNDOMAIN/ ADD CNDOMAIN

Description:

Periodical location update is implemented by MS through the location update

procedure. 0: The periodical update procedure is not used. This parameter is valid

only when [CN domain ID] is set as CS_DOMAIN.

IMSI Attach and Detach Operation

The system information will contain an indicator indicating whether IMSI attach/detach

operation is mandatory in the cell. The UE shall operate in accordance with the

received value of the indicator. This indicator, however, shall not be considered in

GRPS attach/detach.

When IMSI 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 in the

UPDATED state. This IMSI detach message will not be acknowledged by the network.

If the UE is still in the original registration area when returning to the active state, the

UE shall perform an LR request indicating IMSI attach. Otherwise, an LR request

shall indicate normal location update.

Algorithm When There Are No Suitable Cells in Location Area

If the UE receives the LR response "No Suitable Cells In Location Area" during

location registration, then the UE shall search for another location area in the same

PLMN where it received the LR response. If the UE finds another location area, it

shall attempt registration. Otherwise, an automatic or manual selection procedure

shall be followed.

2.5.9 Paging

I. Principle

Paging is used for the network to send paging messages to UEs in idle mode,

CELL_PCH state, or URA_PCH state. The UE in idle mode may use Discontinuous


31


Reception (DRX) in order to reduce power consumption. The UE needs to monitor

only one Page Indicator (PI) in one Paging Occasion per DRX cycle.

For FDD, The DRX cycle length shall be 2k frames. Where, k is an integer and is

decided by the following three parameters:

CN domain specific DRX cycle length for CS

CN domain specific DRX cycle length for PS

UTRAN DRX cycle length coefficient

II. Algorithm

The following introduces the three parameters:

CN domain specific DRX cycle lengths

The UE may be attached to different CN domains with different CN domain

specific DRX cycle lengths. The UE shall store these lengths for all CN domains

the UE is attached to and use the shortest one.

The CN specific DRX cycle length coefficient of the CS domain shall be

updated locally in the UE through system information. The coefficient of the PS

domain shall be updated after the negotiation between the UE and PS domain

through NAS procedure. If no specific value "k" is negotiated in NAS procedure,

the UE and PS domain shall use the DRX cycle length given for PS domain in

system information.

For a UE in idle mode, the DRX cycle length equals to the following or the

shortest value of the following:

- Any of the stored DRX cycle length for the CN domains the UE is attached to

with no signaling connection established

For a UE in CELL_PCH state or URA_PCH state, it equals to the shortest value

of the following:

- UTRAN DRX cycle length

- Any of the stored DRX cycle length for the CN domains the UE is attached to

with no signaling connection established

UTRAN DRX cycle length

This parameter value is sent to the UE through the RRC CONNECTION SETUP

message without distinguishing specific CN domain types.

The UTRAN side determines the Paging Occasion based on all the following

information (this occasion is actually the frame number in the paging channel

cycle length of 4096 frames):

- IMSI

- The number of available S-CCPCHs that carry a PCH

- The Cell System Frame Number (SFN)


32


- The DRX cycle length

Parameter name DRX cycle length coefficient

Parameter ID DRXCYCLELENCOEF

GUI range 6–9

Physical range& unit -

Default value 6


MML command MOD CNDOMAIN/ ADD CNDOMAIN

Description:

CN domain specific DRX cycle length coefficient broadcast on SIB1 and used by

UEs in Idle Mode.

2.5.10 System Information Reception

I. Structure of System Information

System information is used for the network to broadcast network information to UEs

camping on a cell so as to control the behavior of UEs.

System information is organized as a tree, including:

MIB

Master Information Block (MIB) gives reference and scheduling information for a

number of SIBs in a cell or one or two SBs in a cell. The MIB contains only the

PLMN types supported and the corresponding PLMN identities.

SB

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

The scheduling information of a SIB may be included in only one of MIB and SB.

SIB

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

system information elements (IEs) with the same purpose.

When selecting a new cell, the UE reads the MIB. The UE may locate the MIB by

predefined scheduling information. The IEs in the MIB includes MIB value tag, PLMN

type, PLMN identity, and other SIB scheduling information.

The main purposes of reading the MIB are as follows:

By reading the PLMN type, the UE can know the PLMN type of the current

network.


33


By reading the PLMN identity, the UE can check it is the selected PLMN.

By comparing the value tag in the MIB with that stored for this cell and PLMN,

the UE can determine whether to read and store scheduling information.

By reading the scheduling information in each SIB, the UE can know the value

tag and actual position of each SIB.

By comparing the value tag in each SIB with that stored for this cell and PLMN,

the UE can determine whether to read and store the SIB. For those SIBs not

supported by the UE, it will skip reading and monitoring them.

The UE may use the scheduling information in MIB and SB to locate each SIB to be

acquired. If the UE receives a SIB in a position according to the scheduling

information and consider the content valid, it will read and store it.

II. Reception of System Information

The UE shall read system information broadcast on a BCH transport channel when

the UE is in idle mode or in connected mode, that is, in CELL_FACH, CELL_PCH, or

URA_PCH state. The main processing methods are as follows:

When the UE is switched off

Except the SIBs stored in the USIM and used for stored information cell-

selection, the UE shall consider other stored SIBs as invalid.

When the UE is switched on

The UE shall store SIBs with area scope (cell, PLMN or Equivalent PLMN, and

their value tag). These SIBs are used when the UE returns to these cells.

When selecting a new cell

The UE shall consider all current SIBs with area scope cell and PLMN to be

invalid, and store and use a new one. If the identity of this PLMN is not indicated

to be equivalent to the identity of the previously selected PLMN, the UE shall

consider all SIBs with area scope Equivalent PLMN to be invalid, and store and

use a new one.

When selecting a new cell in the current PLMN

The UE shall consider all current SIBs with area scope cell to be invalid, and

store and use a new one.

2.6 Capabilities

None

2.7 Implementation

2.7.1 Enabling UE Behaviors in Idle Mode

This feature does not need extra hardware or initialization. It takes effect

automatically.


34


For the network planning or optimization, the data can be adjusted on the RNC LMT

as required. Default value of the related parameters is recommended to be used.

2.7.2 Reconfiguring Parameters

I. Parameter Reconfiguration on the RNC Side

Table 2-2 describes the commands used for the reconfiguration on the RNC side.

Table 2-2 Commands for the reconfiguration on the RNC side

Function Command

About the cell

selection and

reselection

information

To query the selection and

reselection informationLST CELLSELRESEL

To add the selection and

reselection informationADD CELLSELRESEL

To modify the selection and

reselection informationMOD CELLSELRESEL

About the cell HCS

parameters

To add HCS parameters ADD CELLHCS

To modify HCS parameters MOD CELLHCS

About the cell SIB

switch

To query the system

information block(SIB) switch

of a cell

LST CELLSIBSWITCH

To add the SIB switch of a cell ADD CELLSIBSWITCH

To modify the SIB switch of a

cellMOD CELLSIBSWITCH

About UE timers and

constants in idle

mode

To query UE timers and

constants in idle modeLST IDLEMODETIMER

To set UE timers and

constants in idle modeSET IDLEMODETIMER

About UE timers and

constants in

connected mode

To query UE timers and

constants in connected modeLST CONNMODETIMER

To set UE timers and

constants in connected modeSET CONNMODETIMER

To query the PCH

configuration informationLST PCH


35


Function Command

About the PCH

configuration

information

To add the PCH configuration

informationADD PCH

To remove the PCH

configuration informationRMV PCH

About the PICH

configuration

information

To query the PICH

configuration informationLST PICH

To add the PICH configuration

informationADD PICH

To remove the PICH

configuration informationRMV PICH

II. Parameter Reconfiguration on the NodeB Side

None.

III. Examples

//Query the cell selection and reselection information of the cell 1.

LST CELLSELRESEL: CellId=1, LstFormat=VERTICAL;

//Modify the lowest quality criterion corresponding to CPICH Ec/N0 to –22

dB.

MOD CELLSELRESEL: CELLID=1, QQUALMIN=-22;

2.7.3 Disabling UE Behaviors in Idle Mode

UE behaviors in idle mode can be set and reconfigured, but not disabled.

2.8 Maintenance Information

2.8.1 Alarms

ALM_2005 System Information Update Failed

2.8.2 Counters

Table 2-3 describes the counters related to UE behaviors in idle mode.


36


Table 2-3 Counters related to UE behavior in idle mode

Item Description

Measurement object ->

measurement family ->

measurement unit

VS.RANAP.Paging.Att Number of CN Paging

Requests

RNC->SIG->PAGE.RNC

VS.RANAP.Paging.Att.I

dleUE

Number of Times of Paging

Idle UE

RNC->SIG->PAGE.RNC

VS.RANAP.Paging.Succ

.IdleUE

Successful Number of

Times of Paging Idle UE

RNC->SIG->PAGE.RNC

VS.UTRAN.Paging1.Att Number of UTRAN-

Originated PAGING TYPE 1

Messages

RNC->SIG->PAGE.RNC

VS.UTRAN.Paging2.Att Number of PAGING TYPE 2

Messages

RNC->SIG->PAGE.RNC

VS.UTRAN.SuccPage1 Number of Successful

Responses to PAGING

TYPE 1 Messages

RNC->SIG->PAGE.RNC

VS.CN.Page.Loss.IUFC Number of Paging

Messages Discarded due to

Iu Interface Flow Control

RNC->SIG->PAGE.RNC

VS.CN.Page.Loss.PCH

Cong

Number of Paging

Messages Lost due to PCH

Congestion

RNC->SIG->PAGE.RNC

2.9 References

3GPP, TS 22.011 "Service accessibility"

3GPP, TS 23.122 "NAS Functions related to Mobile Station (MS) in idle mode"

3GPP, TS 24.008 "Mobile radio interface layer 3 specification; Core Network

Protocols - Stage 3"

3GPP, TS 25.304 "UE Procedures in Idle Mode and Procedures for Cell

Reselection in Connected Mode"

3GPP, TS 25.331 "Radio Resource Control (RRC)"

3GPP, TS 31.102 "Characteristics of the USIM Application"


37

02-ue behaviors in idle mode

Documents

ran feature description

frequency division duplex

lr reject message

drx cycle length

signaling connection established

pich configuration information

pch configuration information

imsi detach message