8.7 Demodulation in Handover conditions

25.1013GPPRelease 17TSUser Equipment (UE) radio transmission and reception (FDD)

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

8.7.1 Demodulation of DCH in Inter-Cell Soft Handover

The bit error rate characteristics of UE is determined during an inter-cell soft handover. During the soft handover a UE receives signals from different cells. A UE has to be able to demodulate two PCCPCH channels and to combine the energy of DCH channels. Delay profiles of signals received from different cells are assumed to be the same but time shifted by 10 chips.

The receive characteristics of the different channels during inter-cell handover are determined by the average Block Error Ratio (BLER) values.

8.7.1.1 Minimum requirement

For the parameters specified in Table 8.25 the average downlink power ratio shall be below the specified value for the BLER shown in Table 8.26. If the UE supports optional enhanced performance requirements type1 for DCH then for the parameters specified in Table 8.26A the average downlink power ratio shall be below the specified value for the BLER shown in Table 8.26B and Test 1 shall be replaced by Test 1a.

Table 8.25: DCH parameters in multi-path propagation conditions during Soft Handoff (Case 3)

Parameter	Unit	Test 1	Test 2	Test 3	Test 4
Phase reference		P-CPICH
and	dB	0	0	3	6
	dBm/3.84 MHz	-60
Information data Rate	kbps	12.2	64	144	384

Table 8.26: DCH requirements in multi-path propagation conditions during Soft Handoff (Case 3)

Test Number		BLER
1	-15.2 dB	10^-2
2	-11.8 dB	10^-1
2	-11.3 dB	10^-2
3	-9.9 dB	10^-1
3	-9.5 dB	10^-2
4	-6.3 dB	10^-1
4	-5.8 dB	10^-2

Table 8.26A: DCH parameters in multi-path propagation conditions during Soft Handoff (VA120) for UE supporting the enhanced performance requirements type1 for DCH

Parameter	Unit	Test 1a
Phase	reference P-CPICH	Phase
and	dB	0
	dBm/3.84 MHz	-60
Information data Rate	kbps	12.2

Table 8.26B: DCH requirements in multi-path propagation conditions during Soft Handoff (VA120) for UE supporting the enhanced performance requirements type1 for DCH

Test Number		BLER
1a	-18.5 dB	10^-2

8.7.1A Demodulation of DCH in Inter-Cell Soft Handover when DL_DCH_FET_Config [10] is configured by higher layers

The receive characteristics of the different channels during inter-cell handover are determined by the average Block Error Ratio (BLER) values.

8.7.1A.1 Minimum requirement

For the parameters specified in Table 8.26C the average downlink power ratio shall be below the specified value for the BLER shown in Table 8.26D.

Table 8.26C: DCH parameters in multi-path propagation conditions during Soft Handoff (Case 3)

Parameter	Unit	Test 1
Phase reference		P-CPICH
and	dB	0
	dBm/3.84 MHz	-60
Information Data Rate	kbps	12.2
DCCH Presence	–	No
DL_DCH_FET_Config	–	0 (Note 1)
Note 1: UL is in 10ms transmission.mode

Table 8.26D: DCH requirements in multi-path propagation conditions during Soft Handoff (Case 3)

Test Number		BLER
1	-14.6 dB	10^-2

8.7.2 Combining of TPC commands from radio links of different radio link sets

8.7.2.1 Minimum requirement

Test parameters are specified in Table 8.27. The delay profiles of the signals received from the different cells are the same but time-shifted by 10 chips.

For Test 1, the sequence of uplink power changes between adjacent slots shall be as shown in Table 8.28 over the 4 consecutive slots more than 99% of the time. Note that this case is without an additional noise source I_oc.

For Test 2, the Cell1 and Cell2 TPC patterns are repeated a number of times. If the transmitted power of a given slot is increased compared to the previous slot, then a variable "Transmitted power UP" is increased by one, otherwise a variable "Transmitted power DOWN" is increased by one. The requirements for "Transmitted power UP" and "Transmitted power DOWN" are shown in Table 8.28A.

Table 8.27: Parameters for TPC command combining

Parameter	Unit	Test 1	Test 2
Phase reference	–
DPCH_Ec/Ior	dB	-12
and	dBm/3.84 MHz	-60
	dBm/3.84 MHz	–	-60
Power-Control-Algorith	–	Algorithm 1
Cell 1 TPC commands over 4 slots	–	{0,0,1,1}
Cell 2 TPC commands over 4 slots	–	{0,1,0,1}
Information data Rate	kbps	12.2
Propagation condition	–	Static without AWGN source	Multi-path fading case 3

Table 8.28: Test requirements for Test 1

Test Number	Required power changes over the 4 consecutive slots
1	Down, Down, Down, Up

Table 8.28A: Requirements for Test 2

Test Number

Ratio

(Transmitted power UP) / (Total number of slots)

Ratio

(Transmitted power DOWN) / (Total number of slots)

≥0.25

≥0.5

8.7.2A Combining of TPC commands from radio links of different radio link sets when DL_DCH_FET_Config [10] is configured by higher layers

8.7.2A.1 Minimum requirement

Test parameters are specified in Table 8.28AA. The delay profiles of the signals received from the different cells are the same but time-shifted by 10 chips.

For Test 1, the sequence of uplink power changes between adjacent slots shall be as shown in Table 8.28AB over the 4 consecutive slots more than 99% of the time. Note that this case is without an additional noise source I_oc.

Table 8.28AA: Parameters for TPC command combining

Parameter	Unit	Test 1	Test 2
Phase reference	–
DPCH_Ec/Ior	dB	-12
and	dBm/3.84 MHz	-60
	dBm/3.84 MHz	–	-60
Power-Control-Algorith	–	Algorithm 1
Cell 1 TPC commands over 4 slots	–	{0,0,1,1}
Cell 2 TPC commands over 4 slots	–	{0,1,0,1}
Information data Rate	kbps	12.2
DCCH Presence	–	No
Propagation condition	–	Static without AWGN source	Multi-path fading case 3
DL_DCH_FET_Config	–	0 (Note 1)
Note 1: UL is in 20ms transmission.mode

Table 8.28AB: Test requirements for Test 1

Test Number	Required power changes over the 4 consecutive slots
1	Down, Down, Down, Up

Table 8.28AC: Requirements for Test 2

Test Number

Ratio

(Transmitted power UP) / (Total number of slots)

Ratio

(Transmitted power DOWN) / (Total number of slots)

≥0.25

≥0.5

8.7.2B Combining of TPC commands from radio links of different radio link sets when DPCCH2 is configured

8.7.2B.1 Minimum requirement

This test verifies that UE follows the TPC commands for the DPCCH as well as the TPC commands for the DPCCH2 when DPCCH2 is configured.

Test parameters are specified in Table 8.28AD. The delay profiles of the signals received from the different cells are the same but time-shifted by 10 chips. Cell1 is the serving HS-DSCH cell on which the DPCCH2 is configured. Two F-DPCH channels are sent from Cell1, where one is associated with DPCCH and one is associated with DPCCH2.

The sequence of uplink DPCCH and DPCCH2 power changes between adjacent slots shall be as shown in Table 8.28AE over the 4 consecutive slots more than 99% of the time. Note that this case is without an additional noise source I_oc.

Table 8.28AD: Parameters for TPC command combining

Parameter	Unit	Test	Notes
Phase reference	–	P-CPICH
F-DPCH Cell 1 associated with UL DPCCH	dB	-12	This F-DPCH channel is from Cell 1 and is associated with the UL DPCCH channel
F-DPCH Cell 1, associated with UL DPCCH2	dB	-12	This F-DPCH channel is from Cell1 and is associated with the UL DPCCH2 channel
F-DPCH Cell 2	dB	-12	This F-DPCH channel is from Cell 2 and is associated with the UL DPCCH channel
F-DPCH slot format	–	0	Valid for all F-DPCH channels.
HS-SCCH_1 (Cell 1)	dB	–	No signalling scheduled, and no power is transmitted on this HS-SCCH, but signalled to the UE as present in HSDPA configuration.
HS-PDSCH (Cell 1)	dB	–	No power is transmitted
OCNS			The power of the OCNS channels that is added shall make the total power from both cells to be equal to Ior .
and	dBm/3.84 MHz	-60
	dBm/3.84 MHz	–	No interference is transmitted
Power-Control-Algorith	–	Algorithm 1
Cell 1 TPC commands for DPCCH over 4 slots	–	{1,1,1,1}
Cell 1 TPC commands for DPCCH2 over 4 slots		{1,1,0,0}
Cell 2 TPC commands for DPCCH over 4 slots	–	{0,0,1,1}
Propagation condition	–	Static

Table 8.28AE: Test requirements

	Required power changes over the 4 consecutive slots
DPCCH	Down, Down, Up, Up
DPCCH2	Up, Up, Down, Down

8.7.3 Combining of reliable TPC commands from radio links of different radio link sets

8.7.3.1 Minimum requirement

Test 1 verifies that the UE follows only the reliable TPC commands in soft handover. Test 2 verifies that the UE follows all the reliable TPC commands in soft handover.

Test parameters are specified in Table 8.28B. Before the start of the tests, the UE transmit power shall be initialised to -15 dBm. An actual UE transmit power may vary from the target level of -15 dBm due to inaccurate UE output power step.

During tests 1 and 2 the UE transmit power samples, which are defined as the mean power over one timeslot, shall stay 90% of the time within the range defined in Table 8.28C.

Table 8.28B: Parameters for reliable TPC command combining

Parameter		Unit		Test 1	Test 2
Phase reference			–	P-CPICH
DPCH_Ec/Ior1	dB		Note 1		Note 1 & Note 3
DPCH_Ec/Ior2	dB		DPCH_Ec/Ior1 – 10		DPCH_Ec/Ior1 + 6
DPCH_Ec/Ior3	dB		DPCH_Ec/Ior1 – 10		–
Î_or1/I_oc	dB		-1		-1
Î_or2/I_oc	dB		-1		-1
Î_or3/I_oc	dB		-1		–
	dBm/3.84 MHz		-60
Power-Control-Algorithm	–		Algorithm 1
UL Power Control step size, _TPC	dB		1
Cell 1 TPC commands	–		Note 2		Note 2
Cell 2 TPC commands	–		"1"		"1"
Cell 3 TPC commands	–		"1"		–
Information data Rate	kbps		12.2
Propagation condition			–	Static
Note 1: The DPCH_Ec/Ior1 is set at the level corresponding to 5% TPC error rate. Note 2: The uplink power control from cell1 shall be such that the UE transmit power would stay at -15 dBm. Note 3: The maximum DPCH_Ec/Ior1 level in cell1 is -9 dB.

Table 8.28C: Test requirements for reliable TPC command combining

Parameter	Unit	Test 1	Test 2
UE output power	dBm	-15 ± 5 dB	-15 ± 3 dB

8.7.4 Combining of reliable TPC commands from radio links of different radio link sets when DL_DCH_FET_Config [10] is configured by higher layers

8.7.4.1 Minimum requirement

Test 1 verifies that the UE follows only the reliable TPC commands in soft handover. Test 2 verifies that the UE follows all the reliable TPC commands in soft handover.

Test parameters are specified in Table 8.28D. Before the start of the tests, the UE transmit power shall be initialised to -15 dBm. An actual UE transmit power may vary from the target level of -15 dBm due to inaccurate UE output power step.

During tests 1 and 2 the UE transmit power samples, which are defined as the mean power over one timeslot, shall stay 90% of the time within the range defined in Table 8.28E.

Table 8.28D: Parameters for reliable TPC command combining

Parameter		Unit		Test 1	Test 2
Phase reference			–	P-CPICH
DPCH_Ec/Ior1	dB		Note 1		Note 1 & Note 3
DPCH_Ec/Ior2	dB		DPCH_Ec/Ior1 – 10		DPCH_Ec/Ior1 + 6
DPCH_Ec/Ior3	dB		DPCH_Ec/Ior1 – 10		–
Î_or1/I_oc	dB		-1		-1
Î_or2/I_oc	dB		-1		-1
Î_or3/I_oc	dB		-1		–
	dBm/3.84 MHz		-60
Power-Control-Algorithm	–		Algorithm 1
UL Power Control step size, _TPC	dB		1
Cell 1 TPC commands	–		Note 2		Note 2
Cell 2 TPC commands	–		"1"		"1"
Cell 3 TPC commands	–		"1"		–
Information data Rate	Kbps		12.2
Propagation condition			–	Static
DCCH Presence			–	No
DL_DCH_FET_Config			–	0 (Note 4)
Note 1: The DPCH_Ec/Ior1 is set at the level corresponding to 5% TPC error rate. Note 2: The uplink power control from cell1 shall be such that the UE transmit power would stay at -15 dBm. Note 3: The maximum DPCH_Ec/Ior1 level in cell1 is -9 dB. Note 4: UL is in 10ms transmission mode

Table 8.28E: Test requirements for reliable TPC command combining

Parameter	Unit	Test 1	Test 2
UE output power	dBm	-15 ± 5 dB	-15 ± 3 dB