6 Measurements for UTRA FDD

25.2153GPPMeasurements (FDD)Physical layerRelease 17TS

6.1 UE measurements

6.1.1 Compressed mode

6.1.1.1 Use of compressed mode for monitoring

On command from the UTRAN, a UE shall monitor cells on other FDD frequencies and on other modes and radio access technologies that are supported by the UE (i.e. TDD, GSM, E-UTRA). To allow the UE to perform measurements, UTRAN shall command that the UE enters in compressed mode, depending on the UE capabilities.

The UE capabilities define whether a UE requires compressed mode in order to monitor cells on other FDD frequencies and on other modes and radio access technologies. UE capabilities indicate the need for compressed mode separately for the uplink and downlink and for each mode, radio access technology and frequency band.

A UE shall support compressed mode for all cases for which the UE indicates that compressed mode is required.

A UE does not need to support compressed mode for cases for which the UE indicates that compressed mode is not required. For these cases, the UE shall support an alternative means of making the measurements.

The UE shall support one single measurement purpose for one transmission gap pattern sequence. The measurement purpose of the transmission gap pattern sequence is signalled by higher layers.

The following subclause provides rules to parameterise the compressed mode.

6.1.1.2 Parameterisation of the compressed mode

In response to a request from higher layers, the UTRAN shall signal to the UE the compressed mode parameters.

A transmission gap pattern sequence consists of consecutive occurrences of transmission gap pattern 1, where transmission gap pattern 1 consists of one or two transmission gaps. See figure 1.

The following parameters characterise a transmission gap pattern:

– TGSN (Transmission Gap Starting Slot Number): A transmission gap pattern begins in a radio frame, henceforward called first radio frame of the transmission gap pattern, containing at least one transmission gap slot. TGSN is the slot number of the first transmission gap slot within the first radio frame of the transmission gap pattern;

– TGL1 (Transmission Gap Length 1): This is the duration of the first transmission gap within the transmission gap pattern, expressed in number of slots;

– TGL2 (Transmission Gap Length 2): This is the duration of the second transmission gap within the transmission gap pattern, expressed in number of slots. If this parameter is not explicitly set by higher layers, then TGL2 = TGL1;

– TGD (Transmission Gap start Distance): This is the duration between the starting slots of two consecutive transmission gaps within a transmission gap pattern, expressed in number of slots. The resulting position of the second transmission gap within its radio frame(s) shall comply with the limitations of [2]. If this parameter is not set by higher layers, then there is only one transmission gap in the transmission gap pattern;

– TGPL1 (Transmission Gap Pattern Length): This is the duration of transmission gap pattern 1, expressed in number of frames;

The following parameters control the transmission gap pattern sequence start and repetition:

– TGPRC (Transmission Gap Pattern Repetition Count): This is the number of transmission gap patterns within the transmission gap pattern sequence;

– TGCFN (Transmission Gap Connection Frame Number): This is the CFN of the first radio frame of the first pattern 1 within the transmission gap pattern sequence.

In addition to the parameters defining the positions of transmission gaps, each transmission gap pattern sequence is characterised by:

– UL/DL compressed mode selection: This parameter specifies whether compressed mode is used in UL only, DL only or both UL and DL;

– UL compressed mode method: The methods for generating the uplink compressed mode gap are spreading factor division by two or higher layer scheduling and are described in [2]. This parameter does not impact the compressed mode method used when DL_DCH_FET_Config is configured by higher layers;

– DL compressed mode method: The methods for generating the downlink compressed mode gap are spreading factor division by two or higher layer scheduling and are described in [2]. This parameter does not impact the compressed mode method used when DL_DCH_FET_Config is configured by higher layers;

– downlink frame type: This parameter defines if frame structure type ‘A’ or ‘B’ shall be used in downlink compressed mode. The frame structures are defined in [2];

– scrambling code change: This parameter indicates whether the alternative scrambling code is used for compressed mode method ‘SF/2’. Alternative scrambling codes are described in [3];

– RPP: Recovery Period Power control mode specifies the uplink power control algorithm applied during recovery period after each transmission gap in compressed mode. RPP can take 2 values (0 or 1). The different power control modes are described in [4];

– ITP: Initial Transmit Power mode selects the uplink power control method to calculate the initial transmit power after the gap. ITP can take two values (0 or 1) and is described in [4].

The UE shall support simultaneous compressed mode pattern sequences which can be used for different measurements. The following measurement purposes can be signalled from higher layers:

– FDD

– TDD

– GSM carrier RSSI measurement

– Initial BSIC identification

– BSIC re-confirmation

– E-UTRA.

The UE shall support one compressed mode pattern sequence for each measurement purpose while operating in FDD mode, assuming the UE needs compressed mode to perform the respective measurement. In case the UE supports several of the measurement purposes, it shall support in parallel one compressed mode pattern sequence for each supported measurement purpose where the UE needs compressed mode to perform the measurement. The capability of the UE to operate in compressed mode in uplink and downlink is given from the UE capabilities.

The GSM measurements Initial BSIC identification and BSIC re-confirmation are defined in [20].

Higher layers will ensure that the compressed mode gaps do not overlap and are not scheduled to overlap the same frame. The behaviour when an overlap occurs is described in [11]. UE is not required to support two compressed mode gaps in a frame.

In all cases, higher layers have control of individual UE parameters. Any pattern sequence can be stopped on higher layers’ command.

The parameters TGSN, TGL1, TGL2, TGD, TGPL1, TGPRC and TGCFN shall all be integers.

Figure 1: Illustration of compressed mode pattern parameters

Annex A (informative):
Change history

Change history

Date

TSG #

TSG Doc.

CR

Rev

Subject/Comment

Old

New

14/01/00

RAN_05

RP-99590

Approved at TSG RAN #5 and placed under Change Control

3.0.0

14/01/00

RAN_06

RP-99688

001

3

Clarifications for compressed mode parameters

3.0.0

3.1.0

14/01/00

RAN_06

RP-99689

002

Definition of PCCPCH RSCP

3.0.0

3.1.0

14/01/00

RAN_06

RP-99689

003

Definition of observed time difference to GSM cell

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

004

Measurements are done on Primary CPICH

3.0.0

3.1.0

14/01/00

RAN_06

RP-99689

005

1

Physical channel BER on DPCCH

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

006

Definition of SIR measurement

3.0.0

3.1.0

14/01/00

RAN_06

RP-99689

007

2

Ranges and resolution of timing measurements

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

009

2

Range and resolution for RF related measurements

3.0.0

3.1.0

14/01/00

RAN_06

RP-99689

010

2

New subclauses: 5.1.15 – UE GPS Timing of Cell Frames for LCS; 5.2.8 UTRAN GPS Timing of Cell Frames for LCS

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

011

Removal of Annex A from TS 25.215

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

013

Definition of Transmitted code power

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

014

2

Range and resolution of BLER measurements

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

015

2

Range and resolution of BER measurements

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

020

Correction of SFN-SFN observed time difference

3.0.0

3.1.0

14/01/00

RAN_06

RP-99688

021

1

CFN-SFN measurement with compressed mode

3.0.0

3.1.0

14/01/00

Change history was added by the editor

3.1.0

3.1.1

31/03/00

RAN_07

RP-000066

024

1

Definition of Transmitted carrier power

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

025

Clarification of Observed time difference to GSM cell

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

027

Naming of BER/BLER mapping

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

028

Minor corrections in TS 25.215

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

029

Re-definition of timing measurements

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

030

2

Mapping of timing measurements

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

031

Removal of note in Round trip time measurement

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

033

Removal of fixed gap position in 25.215

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

036

4

Corrections to 25.215 compressed mode parameter list

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

037

3

Definition and range of physical channel BER

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

040

Clarification of CPICH measurements in Tx diversity

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

042

1

UTRAN RSSI measurement

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

043

1

UTRAN Propagation delay

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

044

2

Correction to subclauses: 5.1.15 UE GPS Timing of Cell Frames for LCS; 5.2.8 UTRAN GPS Timing of Cell Frames for LCS, including timing mapping

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

047

Removal of RSCP measurement

3.1.1

3.2.0

31/03/00

RAN_07

RP-000066

048

UE BER measurement removal and clarification for use of uplink compressed mode

3.1.1

3.2.0

26/06/00

RAN_08

RP-000270

049

1

Propagation delay for PCPCH

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

050

1

Maximum number of simultaneous compressed mode pattern sequences

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

051

1

Clarification of Physical channel BER

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

052

Clarification of transmitted code power

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

053

Editorial correction in TS 25.215

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

055

Proposed CR for Measurements of RACH in FDD

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

056

Proposed CR for Measurements of CPCH in FDD

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

057

Transfer of information from TS 25.212 table 9 to TS 25.215

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

058

Correction to CM parameter list

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

062

Clarification of radio link measurements in compressed mode

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

063

Clarification of the Transmitted code power measurement in Tx diversity

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

064

1

Removal of Range/mapping

3.2.0

3.3.0

26/06/00

RAN_08

RP-000270

066

Removal of UTRAN TrCH BLER measurement

3.2.0

3.3.0

23/09/00

RAN_09

RP-000343

067

Insertion of UTRAN SIRerro measurement in 25.215

3.3.0

3.4.0

23/09/00

RAN_09

RP-000343

068

Reporting of UTRAN Transmitted carrier power

3.3.0

3.4.0

23/09/00

RAN_09

RP-000343

070

Clarification of UTRAN SIR measurement

3.3.0

3.4.0

23/09/00

RAN_09

RP-000343

071

Clarification of first significant path

3.3.0

3.4.0

23/09/00

RAN_09

RP-000343

072

Clarification of radio link set as the measured object

3.3.0

3.4.0

15/12/00

RAN_10

RP-000541

069

3

Support of parallel compressed mode patterns

3.4.0

3.5.0

15/12/00

RAN_10

RP-000541

074

1

Clarification of SIRerror measurement during compressed mode

3.4.0

3.5.0

15/12/00

RAN_10

RP-000541

075

2

Definition of UTRAN RSSI

3.4.0

3.5.0

15/12/00

RAN_10

RP-000541

076

1

Clarification of GPS timing measurements

3.4.0

3.5.0

15/12/00

RAN_10

RP-000541

077

2

Clarification of reference point for UE/UTRAN measurements

3.4.0

3.5.0

15/12/00

RAN_10

RP-000541

078

1

Correction to measurement "Rx-Tx time difference"

3.4.0

3.5.0

15/12/00

RAN_10

RP-000541

080

1

Clarifications to compressed mode usage

3.4.0

3.5.0

16/03/01

RAN_11

Approved as Release 4 specification (v4.0.0) at TSG RAN #11

3.5.0

4.0.0

16/03/01

RAN_11

RP-010061

079

2

Correction of the observed time difference to GSM measurement

3.5.0

3.6.0

16/03/01

RAN_11

RP-010061

081

Removal of UE SIR measurement

3.5.0

3.6.0

16/03/01

RAN_11

RP-010061

082

1

Correction of GSM reference

3.5.0

3.6.0

16/03/01

RAN_11

RP-010061

083

Correction of GPS Timing measurement

3.5.0

3.6.0

16/03/01

RAN_11

RP-010061

086

Correction on transport channel BLER

3.5.0

3.6.0

16/03/01

RAN_11

RP-010072

085

RTD measurement in UTRAN for FDD

3.5.0

4.0.0

15/06/01

RAN_12

RP-010335

088

Renaming of LCS measurements

4.0.0

4.1.0

15/06/01

RAN_12

RP-010456

090

2

Correction the TrCH BLER measurement

4.0.0

4.1.0

21/09/01

RAN_13

RP-010521

096

Removal of the BLER measurement of the BCH

4.1.0

4.2.0

14/12/01

RAN_14

RP-010740

098

Clarification of internal measurements

4.2.0

4.3.0

14/12/01

RAN_14

RP-010740

103

Clarification of P-CCPCH RSCP in 25.215

4.2.0

4.3.0

14/12/01

RAN_14

RP-010740

105

Revised definitions of CPICH Ec/No and UTRA carrier RSSI

4.2.0

4.3.0

14/12/01

RAN_14

RP-010745

099

2

UE GPS code phase measurement

4.2.0

4.3.0

14/12/01

RAN_14

RP-010745

106

1

UTRAN SFN-SFN observed time difference measurement

4.2.0

4.3.0

08/03/02

RAN_15

RP-020245

114

3

Clarification of UE measurements Applicability

4.3.0

4.4.0

08/03/02

RAN_15

RP-020048

116

Correction to the definition of UTRAN GPS timing of cell frames for UE positioning

4.3.0

4.4.0

08/03/02

RAN_15

RP-020048

117

Correction to the definition of UE GPS timing of cell frames for UE positioning

4.3.0

4.4.0

08/03/02

RAN_15

RP-020231

111

1

Removal of channel coding option "no coding" for FDD

4.3.0

4.4.0

08/03/02

RAN_15

Raised up to v5.0.0 together with other specs.

4.4.0

5.0.0

18/09/02

RAN_17

RP-020530

119

4

Transmitted carrier power measurement correction

5.0.0

5.1.0

18/09/02

RAN_17

RP-020575

121

Measurements for observed time difference to GSM cell

5.0.0

5.1.0

18/09/02

RAN_17

RP-020575

130

Compressed mode limitation

5.0.0

5.1.0

18/09/02

RAN_17

RP-020558

128

Correction of UE SFN-SFN type 1 measurement

5.0.0

5.1.0

21/12/02

RAN_18

RP-020842

131

1

Received Total Wide Band Power Measurement Definition

5.1.0

5.2.0

26/03/03

RAN_19

RP-030017

133

3

Correction of UTRAN SIR measurement definition

5.2.0

5.3.0

26/03/03

RAN_19

RP-030081

134

1

Non-HSDPA power measurement

5.2.0

5.3.0

23/06/03

RAN_20

RP-030270

142

Correction of transmitted carrier power definition in case of Tx diversity

5.3.0

5.4.0

23/06/03

RAN_20

RP-030274

143

Correction of transmitted carrier power of all codes not used for HS-PDSCH or HS-SCCH transmission definition in case of Tx diversity

5.3.0

5.4.0

22/09/03

RAN_21

RP-030452

144

1

Beamforming Enhancement related measurements

5.4.0

5.5.0

07/01/04

RAN_22

Approved to promote to a Release 6 TS and created for M.1457 update

5.5.0

6.0.0

07/01/04

RAN_22

RP-030726

145

2

Beamforming Enhancement related measurements

5.5.0

6.0.0

13/12/04

RAN_26

RP-040449

149

1

Introduction of E-DCH

6.0.0

6.1.0

14/03/05

RAN_27

RP-050050

147

4

Introduction of ‘DL Transmission Branch Load’ measurement

6.1.0

6.2.0

14/03/05

RAN_27

RP-050038

153

1

Removal of TGPL2

6.1.0

6.2.0

14/03/05

RAN_27

RP-050092

154

Clarification of the cell on SFN-SFN observed time difference

6.1.0

6.2.0

14/03/05

RAN_27

RP-050088

155

Introduction of F-DPCH without pilot field

6.1.0

6.2.0

16/06/05

RAN_28

RP-050250

161

Feature Clean Up: Removal of "CPCH"

6.2.0

6.3.0

16/06/05

RAN_28

RP-050245

163

Feature Clean Up: Removal of observed time difference to GSM cell measurement

6.2.0

6.3.0

16/06/05

RAN_28

RP-050249

165

Feature clean up: Removal of the ‘compressed mode by puncturing’

6.2.0

6.3.0

26/09/05

RAN_29

RP-050453

0166

1

UE power headroom measurement

6.3.0

6.4.0

26/09/05

RAN_29

RP-050440

0167

Non-HS power measurement

6.3.0

6.4.0

20/03/06

RAN_31

Creation of Release 7 specification (v.7.0.0) at RAN#31

6.4.0

7.0.0

29/09/06

RAN_33

RP-060495

0170

3

Introduction of a Node B measurement for E-DCH RRM

7.0.0

7.1.0

30/05/07

RAN_36

RP-070391

0172

5

Clarification of UE measurement definitions for RX diversity

7.1.0

7.2.0

11/09/07

RAN_37

RP-070648

0176

1

Adding GANSS related measurements in the FDD physical layer measurements

7.2.0

7.3.0

27/11/07

RAN_38

RP-070946

0177

Clarification of UE measurement definitions for RX diversity

7.3.0

7.4.0

04/03/08

RAN_39

Release 8 version further to RAN_39 decision

7.4.0

8.0.0

28/05/08

RAN_40

RP-080436

188

E-UTRA measurements for UTRA – E-UTRA interworking

8.0.0

8.1.0

09/09/08

RAN_41

RP-080672

189

UPH measurement support for Enhanced Uplink for CELL_FACH state

8.1.0

8.2.0

09/09/08

RAN_41

RP-080666

190

Modification of RSRQ and removal of RSSI

8.1.0

8.2.0

09/09/08

RAN_41

RP-080666

192

Modification of RSRP definition

8.1.0

8.2.0

03/03/09

RAN_43

RP-090232

194

1

RSRP and RSRQ Measurement Definitions

8.2.0

8.3.0

15/09/09

RAN_45

RP-090888

195

1

Clarification on reference point of RSRP and RSRQ for EUTRA

8.3.0

8.4.0

18/09/09

RAN_45

Release 9 created further to RAN_45 decision

8.4.0

9.0.0

01/12/09

RAN_46

RP-091170

196

2

Introduction of DC-HSUPA

9.0.0

9.1.0

16/03/10

RAN_47

RP-100205

197

2

Modification of RSRQ definition

9.1.0

9.2.0

21/03/11

SP_51

Release 10 created further to SP_51 decision

9.2.0

10.0.0

05/12/11

RAN_54

RP-111672

199

Introduction of Uplink Closed Loop Transmit Diversity for HSPA

10.0.0

11.0.0

10/09/14

RAN_65

RP-141480

201

1

Introduction of DCH Enhancements

11.0.0

12.0.0

10/09/14

RAN_65

RP-141484

202

2

Inclusion of definition of WLAN Beacon RSSI in UMTS specifications

11.0.0

12.0.0

09/03/15

RAN_67

RP-150361

200

2

New E-UTRA RSRQ measurement definition

12.0.0

12.1.0

07/12/15

SP_70

Release 13 created further to SP_70 decision

12.1.0

13.0.0

Change history

Date

Meeting

TDoc

CR

Rev

Cat

Subject/Comment

New version

2016-06

RP-72

RP-161144

0206

F

Clarification on measuring the transmitted code power for the downlink DPCH slot formats #17 and #18

13.1.0

2017-03

RP-75

Promotion to Release 14 without technical change (MCC)

14.0.0

2018-06

RP-80

Promotion to Release 15 without technical change (MCC)

15.0.0

2020-07

RP-88e

Upgrade to Rel-16 version without technical change

16.0.0

2022-03

RP-95e

Upgrade to Rel-17 version without technical change

17.0.0