8.4.5 Inter-RAT handover E-UTRA to HRPD

36.523-13GPPEvolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC)Part 1: Protocol conformance specificationRelease 17TSUser Equipment (UE) conformance specification

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

8.4.5.1 Void

8.4.5.2 Void

8.4.5.3 Void

8.4.5.4 Pre-registration at HRPD and inter-RAT handover / From E-UTRA to HRPD Active / Data

8.4.5.4.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_CONNECTED state and UE has performed pre-registration on HRPD neighbour cell }

ensure that {

when { UE receives a HandoverFromEUTRAPreparationRequest message with cdma2000-type set to ‘HRPD’ }

then { UE transmits a ULHandoverPreparationTransfer message containing tunnelled HRPD ConnectionRequest and RouteUpdate messages }

}

(2)

with { UE in E-UTRA RRC_CONNECTED state and UE has performed pre-registration on HRPD neighbour cell }

ensure that {

when { UE receives a MobilityFromEUTRACommand message containing tunnelled HRPD TrafficChannelAssignment, HRPDSilenceParameters and HRPDOpenLoopParameters messages }

then { UE transmits a TrafficChannelComplete message on the target HRPD cell }

}

8.4.5.4.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 36.331, clauses 5.4.3.3, 5.4.4.3, 5.4.5.1 and 5.4.5.3, TS 23.402, clause 9.3.2 and 3GPP2 X.S0057- B v1.0, clause 13.1.2.

[TS 36.331, clause 5.4.3.3]

The UE shall be able to receive a MobilityFromEUTRACommand message and perform a cell change order to GERAN, even if no prior UE measurements have been performed on the target cell.

The UE shall:

1> stop timer T310, if running;

1> if the MobilityFromEUTRACommand message includes the purpose set to ‘handover’:

2> if the targetRAT-Type is set to ‘utra’ or ‘geran’:

…

2> else if the targetRAT-Type is set to ‘cdma2000-1XRTT’ or ‘cdma2000-HRPD’:

3> forward the targetRAT-Type and the targetRAT-MessageContainer to the CDMA2000 upper layers for the UE to access the cell indicated in the inter-RAT message in accordance with the specifications of the CDMA2000 target-RAT;

[TS 36.331, clause 5.4.4.3]

Upon reception of the HandoverFromEUTRAPreparationRequest message, the UE shall:

1> indicate the request to prepare handover and forward the cdma2000-Type to the CDMA2000 upper layers;

1> if cdma2000-Type is set to ‘type1XRTT’:

2> forward the rand and the mobilityParametersCDMA2000 to the CDMA2000 upper layers;

[TS 36.331, clause 5.4.5.1]

Figure 5.4.5.1-1: UL handover preparation transfer

The purpose of this procedure is to tunnel the handover related CDMA2000 dedicated information from UE to E-UTRAN when requested by the higher layers. The procedure is triggered by the higher layers on receipt of HandoverFromEUTRAPreparationRequest message. This procedure applies to CDMA2000 capable UEs only.

[TS 36.331, clause 5.4.5.3]

The UE shall set the contents of the ULHandoverPreparationTransfer message as follows:

1> include the cdma2000-Type and the dedicatedInfoCDMA2000;

1> if the cdma2000-Type is set to ‘type1XRTT’:

2> include the meid and set it to the value received from the CDMA2000 upper layers;

1> submit the ULHandoverPreparationTransfer message to lower layers for transmission, upon which the procedure ends;

[TS 23.402, clause 9.3.2]

Figure 9.3.2-1 illustrates a high-level call flow for the optimised E-UTRAN to HRPD handover procedure, Handover phase. The prerequisite of the handover phase is the successfully performed Pre-registration phase as it is specified in clause 9.3.1.

Figure 9.3.2-1: E-UTRAN to HRPD handover

[3GPP2 X.S0057- B v1.0, clause 13.1.2]

Figure 9.3.2-2

8.4.5.4.3 Test description

8.4.5.4.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 15.

– System information combination 6 as defined in TS 36.508 [18] clause 4.4.3.1 is used in E-UTRA cells.

UE:

None.

Preamble:

– The UE is in state Generic RB Established (state 3B) on Cell 1 according to [18].

– The UE has performed HRPD pre-registration on Cell 15.

8.4.5.4.3.2 Test procedure sequence

Table 8.4.5.4.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions, while row marked "T1" is to be applied subsequently. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 8.4.5.4.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 15	Remark
T0	Cell-specific RS EPRE	dBm/15kHz	-75	–	The power level values are such that camping on Cell 1 is guaranteed.
	Îor/Ioc	dB	–	-20
	Ioc	dBm/1.23 MHz	–	-55
	Pilot Ec/Io (Note 1)	dB	–	-20
T1	Cell-specific RS EPRE	dBm/15kHz	-80	–	The power level values are such that entering conditions for event B2 on Cell 15 are satisfied.
	Îor/Ioc	dB	–	-5
	Ioc	dBm/1.23 MHz	–	-55
	Pilot Ec/Io (Note 1)	dB	–	-6
Note 1: This parameter is not directly settable, but is derived by calculation from the other parameters set by the SS.

Table 8.4.5.4.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The SS transmits an RRCConnectionReconfiguration message on Cell 1 to setup inter RAT measurement on Cell 15.	<–	RRCConnectionReconfiguration	–	–
2	The UE transmits an RRCConnectionReconfigurationComplete message on Cell 1 to confirm the setup of inter RAT measurement.	–>	RRCConnectionReconfigurationComplete	–	–
3	The SS changes Cell 1 and Cell 15 parameters according to row “T1” in table 8.4.5.4.3.2-1.	–	–	–	–
4	The UE transmits a MeasurementReport message on Cell 1 to report event B2 for Cell 15,	–>	MeasurementReport	–	–
5	The SS transmits a HandoverFromEUTRAPreparationRequest on Cell 1.	<–	HandoverFromEUTRAPreparationRequest	–	–
6	Check: Does the UE transmit tunnelled HRPD Connection Request and Route Update messages contained in an ULHandoverPreparationTransfer message on Cell 1?	–>	ULHandoverPreparationTransfer	1	P
7	The SS transmits tunnelled HRPD Traffic Channel Assignment, HRPD Silence Parameters and HRPD Open Loop Parameters messages contained in a MobilityFromEUTRACommand on Cell1 to order the UE to perform inter RAT handover to Cell 15.	<–	MobilityFromEUTRACommand	–	–
8	The UE tunes to HRPD radio.	–	–	–	–
9	Check: Does the UE transmit a Traffic Channel Complete message on Cell 15?	–>	Traffic Channel Complete	2	P

8.4.5.4.3.3 Specific message contents

Table 8.4.5.4.3.3-1: RRCConnectionReconfiguration (step 1, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508, Table 4.6.1-8, condition MEAS

Table 8.4.5.4.3.3-2: MeasConfig (step 1, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508, Table 4.6.6-1
Information Element	Value/remark	Comment	Condition
MeasConfig ::= SEQUENCE {
measObjectToAddModList SEQUENCE (SIZE (1..maxObjectId)) OF SEQUENCE {	2 entries
measObjectId[1]	IdMeasObject-f1
measObject[1]	MeasObjectEUTRA-GENERIC(f1)
measObject[1]	MeasObjectEUTRA-GENERIC(maxEARFCN)		Band > 64
measObjectId[2]	IdMeasObject-f14
measObject[2]	MeasObjectCDMA2000-GENERIC
}
reportConfigToAddModList SEQUENCE (SIZE (1..maxReportConfigId)) OF SEQUENCE {	1 entry
reportConfigId[1]	IdReportConfig-B2-CDMA2000
reportConfig[1]	ReportConfigInterRAT-B2-CDMA2000(-69, -18)
}
measIdToAddModList SEQUENCE (SIZE (1..maxMeasId)) OF SEQUENCE {	1 entry
measId[1]	1
measObjectId[1]	IdMeasObject-f14
reportConfigId[1]	IdReportConfig-B2-CDMA2000
}
quantityConfig SEQUENCE {
quantityConfigCDMA2000 SEQUENCE {
measQuantityCDMA2000	pilotStrength
}
}
measGapConfig CHOICE {
setup SEQUENCE {
gapOffset CHOICE {
gp1	30
}
}
}
}
measObjectToAddModList-v9e0 ::= SEQUENCE (SIZE (1..maxObjectId)) OF {	2 entries		Band > 64
measObjectEUTRA-v9e0[1] ::= SEQUENCE {
carrierFreq-v9e0	Same downlink EARFCN as used for f1
}
measObjectEUTRA-v9e0[2] ::= SEQUENCE {}
}
}

Condition	Explanation
Band > 64	If band > 64 is selected

Table 8.4.5.4.3.3-3: MeasObjectCDMA2000-GENERIC (step 1, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508, Table 4.6.6-1C
Information Element	Value/remark	Comment	Condition
MeasObjectCDMA2000-GENERIC ::= SEQUENCE {
cdma2000-Type	TypeHRPD
CarrierFreqCDMA2000 SEQUENCE {
bandClass	Band Class of frequency under test
arfcn	f14
}
SearchWindowSize	15
offsetFreq	db0
cellsToRemoveList	Not present
cellsToAddModList CHOICE {}	Cell 15	Listed cell parameters to be reported
cellForWhichToReportCGI	Not present
}

Table 8.4.5.4.3.3-4: MeasurementReport (step 4, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508, Table 4.6.1-5
Information Element	Value/remark	Comment	Condition
MeasurementReport ::= SEQUENCE {
criticalExtensions CHOICE {
c1 CHOICE{
measurementReport-r8 SEQUENCE {
measResults SEQUENCE {
measId	1
measResultServCell SEQUENCE {
rsrpResult	(0..97)
rsrqResult	(0..34)
}
measResultNeighCells CHOICE {
measResultsCDMA2000 :=SEQUENCE {
preRegistrationStatusHRPD	TRUE
measResultListCDMA2000 ::=SEQUENCE (SIZE (1..maxCellReport)) OF SEQUENCE {	1 entry	Note 1
physCellId[1]	PhysicalCellIdentity of Cell 15
cgi-Info[1]	Not present
measResult[1] SEQUENCE {
pilotStrength	(0..63)
}
}
}
}
}
}
}
}
}

Table 8.4.5.4.3.3-5: HandoverFromEUTRAPreparationRequest (step 5, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508 Table 4.6.1-4
Information Element	Value/remark	Comment	Condition
HandoverFromEUTRAPreparationRequest ::= SEQUENCE {
criticalExtensions CHOICE {
c1 CHOICE {
handoverFromEUTRAPreparationRequest-r8 SEQUENCE {
cdma2000-Type	typeHRPD
rand	Not present
mobilityParameters	Not present
}
}
}
}

Table 8.4.5.4.3.3-6: ULHandoverPreparationTransfer (step 6, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508 Table 4.6.1-24
Information Element	Value/remark	Comment	Condition
ULHandoverPreparationTransfer ::= SEQUENCE {
criticalExtensions CHOICE {
c1 CHOICE {
ulHandoverPreparationTransfer-r8 SEQUENCE {
cdma2000-Type	typeHRPD
meid	Not present
dedicatedInfo	Set according to Table 8.4.5.4.3.3-6A	HRPD Connection Request and Route Update
}
}
}
}

Table 8.4.5.4.3.3-6A: dedicatedInfo in ULHandoverPreparationTransfer (step 6, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
SAPState	‘0’B	SAP Header
SessionConfigurationToken	16 bits, Set by UE
ConnectionLayerFormat	1 bit, Set by UE
ATI Record	34 bits, Set based on UATI assigned to UE
Reserved	‘0000’B
Length	Length of HRPD Route Update message (Table 8.4.5.4.3.3-7A) + length of StreamHeader + length of SLPHeader + length of SNPHeader below, Set by SS	Connection Layer Header
StreamHeader	‘00’B	Stream Layer header. Stream 0 is assigned to the Default Signalling Application
SLPHeader	Set by the UE	Signalling Link Protocol SLP-D and SLP-F headers.
SNPHeader	‘00001110’	Signalling Network Protocol header. InConfigurationProtocol=0, Type=Route Update.
SessionLayerPacket	HRPD Route Update message (Table 8.4.5.4.3.3-7A)
Length	Length of HRPD Connection Request message (Table 8.4.5.4.3.3-7) + length of StreamHeader + length of SLPHeader + length of SNPHeader below, Set by SS	Connection Layer Header
StreamHeader	‘00’B	Stream Layer header. Stream 0 is assigned to the Default Signalling Application
SLPHeader	Set by the UE	Signalling Link Protocol SLP-D and SLP-F headers.
SNPHeader	‘00001100’	Signalling Network Protocol header. InConfigurationProtocol=0, Type=Idle State.
SessionLayerPacket	HRPD Connection Request message (Table 8.4.5.4.3.3-7)

Table 8.4.5.4.3.3-7: HRPD Connection Request (step 6, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
MessageID	‘0000001’	Connection Request	this value shall be verified by TTCN
TransactionID	Any allowed value	8 bit field
RequestReason	‘0000’	Access Terminal Initiated

Table 8.4.5.4.3.3-7A: HRPD Route Update (step 6, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
MessageID	‘0000000’B	Route Update	this value shall be verified by TTCN
MessageSequence	8 bits, Set by UE
ReferencePilotPN	9 bits, Set by UE
ReferencePilotStrength	6 bits, Set by UE
ReferenceKeep	‘1’B
NumPilots	‘0000’B
CompatibleReserved	‘0’B
ReferencePilotChannelIncluded	‘1’B
ReferencePilotChannel	24 bits, Set by UE
ReferencePilotArrivalIncluded	‘1’B
ReferencePilotArrival	15 bits, Set by UE
Reserved	0-7 bits, Set all 0s by UE

Table 8.4.5.4.3.3-8: MobilityFromEUTRACommand (step 7, Table 8.4.5.4.3.2-2)

Derivation Path: 36.508, Table 4.6.1-6
Information Element	Value/remark	Comment	Condition
MobilityFromEUTRACommand ::= SEQUENCE {
criticalExtensions CHOICE {
c1 CHOICE{
mobilityFromEUTRACommand-r8 SEQUENCE {
csFallbackIndicator	False
purpose CHOICE{
handover SEQUENCE {
targetRAT-Type	cdma2000-HRPD
targetRAT-MessageContainer	Set according to Table 8.4.5.4.3.3-8 A	HRPD Silence Parameters and HRPD Open Loop Parameters, HRPD Traffic Channel Assignment
}
}
}
}
}
}

Table 8.4.5.4.3.3-8A: targetRAT-MessageContainer in MobilityFromEUTRACommand (step 7, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
SAPState	‘1’B	SAP Header
SessionConfigurationToken	‘0’B
ConnectionLayerFormat	1 bit, Set by SS
ATI Record	34 bits, Set based on UATI assigned to UE
Reserved	‘0000’B
Length	Length of HRPD Silence Parameters message (Table 8.4.5.4.3.3-9A) + length of StreamHeader + length of SLPHeader + length of SNPHeader below, Set by SS	Connection Layer Header (Note 1)
StreamHeader	‘00’B	Stream Layer header. Stream 0 is assigned to the Default Signalling Application
SLPHeader	Set by the SS	Signalling Link Protocol SLP-D and SLP-F headers.
SNPHeader	‘00001111’	Signalling Network Protocol header. InConfigurationProtocol=0, Type=Overhead Messages.
SessionLayerPacket	HRPD Silence Parameters message (Table 8.4.5.4.3.3-9A)	(Note 1)
Length	Length of HRPD Open Loop Parameters message (Table 8.4.5.4.3.3-9B) + length of StreamHeader + length of SLPHeader + length of SNPHeader below, Set by SS	Connection Layer Header (Note 1)
StreamHeader	‘00’B	Stream Layer header. Stream 0 is assigned to the Default Signalling Application
SLPHeader	Set by the SS	Signalling Link Protocol SLP-D and SLP-F headers.
SNPHeader	‘00000100’	Signalling Network Protocol header. InConfigurationProtocol=0, Type=Reverse Traffic Channel MAC.
SessionLayerPacket	HRPD Open Loop Parameters message (Table 8.4.5.4.3.3-9B)	(Note 1)
Length	Length of HRPD Traffic Channel Assignment message (Table 8.4.5.4.3.3-9) + length of StreamHeader + length of SLPHeader + length of SNPHeader below, Set by SS	Connection Layer Header
StreamHeader	‘00’B	Stream Layer header. Stream 0 is assigned to the Default Signalling Application
SLPHeader	Set by the SS	Signalling Link Protocol SLP-D and SLP-F headers.
SNPHeader	‘00001110’	Signalling Network Protocol header. InConfigurationProtocol=0, Type=Route Update.
SessionLayerPacket	HRPD Traffic Channel Assignment message (Table 8.4.5.4.3.3-9)

Note 1: HRPD Silence Parameters message and HRPD Open Loop Parameters message can be sent in any order.

Table 8.4.5.4.3.3-9: HRPD Traffic Channel Assignment (step 7, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
MessageID	‘00000001’B	Traffic Channel Assignment
MessageSequence	Set by SS	8 bit field
ChannelIncluded	‘1’B	Channel record included
Channel	‘000000000000000001111010’B	channel record for Cell 15
FrameOffset	‘1010’B	frame offset for Cell 15
DRCLength	‘01’B	DRCLength for Cell 15
DRCChannelGainBase	‘111101’B	ratio of the power level of the DRC Channel (when it is transmitted) to the power level of the Reverse Traffic Pilot Channel expressed as 2’s complement value in units of 0.5 dB
ACKChannelGain	‘000110’B	ratio of the power level of the Ack Channel (when it is transmitted) to the power level of the Reverse Traffic Pilot Channel expressed as 2’s complement value in units of 0.5 dB
NumPilots	‘1’B
PilotPN	‘000110010’B	PN Offset of target sector (Cell 15)
SofterHandoff	‘0’B	Set to ‘0’since only 1 pilot included in message
MACIndexLSBs	Set by SS	6 least significant bits of the MACIndex assigned to UE
DRCCover	‘001’B	index of the DRC cover associated with target sector (Cell 15)
RABLength	‘01’B	2 bit field
RABOffset	‘010’B	3 bit field

Table 8.4.5.4.3.3-9A: HRPD Silence Parameters (step 7, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
MessageID	‘00000010’B
ReverseLinkSilenceDuration	2 bits, Set by SS
ReverseLinkSilencePeriod	2 bits, Set by SS
Reserved	0-7 bits, Set all 0s by SS

Table 8.4.5.4.3.3-9B: HRPD Open Loop Parameters (step 7, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
MessageID	‘00000111’B
NumPilots	‘0001’B
PilotPN	9 bits, Set by SS
OpenLoopAdjust	8 bits, Set by SS
InitialAdjust	5 bits, Set by SS
PilotStrengthIncluded	1 bit, Set by SS
PilotStrengthNominal	3 bits, Set by SS
PilotStrengthCorrectionMin	3 bits, Set by SS
PilotStrengthCorrectionMax	3 bits, Set by SS
Reserved	0-7 bits, Set all 0s by SS

Table 8.4.5.4.3.3-10: HRPD Traffic Channel Complete (step 9, Table 8.4.5.4.3.2-2)

Information Element	Value/remark	Comment	Condition
MessageID	‘00000010’		this value shall be verified by TTCN
MessageSequence	Same value as MessageSequence in HRPD Traffic Channel Assignment message (Table 8.4.5.4.3.3-9)