24.1.12 V2X Sidelink Communication / Pre-configured authorisation / UE in RRC_IDLE on an E-UTRAN cell operating on the anchor carrier frequency for V2X configuration/ UE transmits V2X sidelink communication using Tx parameters based on measured CBR and PPPP

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

24.1.12.1 Test Purpose (TP)

(1)

with { UE being authorized for performing V2X sidelink Communication in PLMN1) and pre-configured with anchor carrier parameters for V2X configuration and with Radio parameters for when the UE is "not served by E-UTRAN", and, UE is in RRC_IDLE on Cell1/f1/PLMN1 which is operating on the anchor carrier frequency as the one pre-configured in the UE and is transmitting SystemInformationBlockType21 which includes cbr-CommonTxConfigList-r14, and v2x-CommTxPoolNormal in v2x-InterFreqInfoList }

ensure that {

when { UE is triggered by an upper layer application to transmit V2X sidelink communication with configured PPPP and CBR measurement results are available }

then { UE is able to transmit V2X sidelink communication using the resources pool associated with the configured PPPP, and uses the Tx parameters based on measured CBR }

}

24.1.12.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.321, clauses 5.14.1.1, TS 36.331, clauses 5.5.3.1, 5.10.13.1and 5.10.13.2.

[TS 36.321, clause 5.14.1.1]

Sidelink grants are selected as follows for V2X sidelink communication:

– if the MAC entity is configured to receive a sidelink grant dynamically on the PDCCH and data is available in STCH, the MAC entity shall:

[…]

– if the MAC entity is configured by upper layers to transmit using a pool of resources as indicated in subclause 5.10.13.1 of [8] based on sensing, or partial sensing, or random selection only if upper layers indicates that transmissions of multiple MAC PDUs are allowed according to subclause 5.10.13.1a of [8], and the MAC entity selects to create a configured sidelink grant corresponding to transmissions of multiple MAC PDUs, and data is available in STCH, the MAC entity shall for each Sidelink process configured for multiple transmissions:

– if SL_RESOURCE_RESELECTION_COUNTER = 0 and when SL_RESOURCE_RESELECTION_COUNTER was equal to 1 the MAC entity randomly selected, with equal probability, a value in the interval [0, 1] which is above the probability configured by upper layers in probResourceKeep; or

– if neither transmission nor retransmission has been performed by the MAC entity on any resource indicated in the configured sidelink grant during the last second; or

– if sl-ReselectAfter is configured and the number of consecutive unused transmission opportunities on resources indicated in the configured sidelink grant is equal to sl-ReselectAfter; or

– if there is no configured sidelink grant; or

– if the configured sidelink grant cannot accommodate a RLC SDU by using the maximum allowed MCS configured by upper layers in maxMCS-PSSCH and the MAC entity selects not to segment the RLC SDU; or

NOTE: If the configured sidelink grant cannot accommodate the RLC SDU, it is left for UE implementation whether to perform segmentation or sidelink resource reselection.

– if transmission(s) with the configured sidelink grant cannot fulfil the latency requirement of the data in a sidelink logical channel according to the associated PPPP, and the MAC entity selects not to perform transmission(s) corresponding to a single MAC PDU; or

NOTE: If the latency requirement is not met, it is left for UE implementation whether to perform transmission(s) corresponding to single MAC PDU or sidelink resource reselection.

– if a pool of resources is configured or reconfigured by upper layers:

– clear the configured sidelink grant, if available;

– select one of the allowed values configured by upper layers in restrictResourceReservationPeriod and set the resource reservation interval by multiplying 100 with the selected value;

NOTE: How the UE selects this value is up to UE implementation.

– randomly select, with equal probability, an integer value in the interval [5, 15] for the resource reservation interval higher than or equal to 100ms, in the interval [10, 30] for the resource reservation interval equal to 50ms or in the interval [25, 75] for the resource reservation interval equal to 20ms, and set SL_RESOURCE_RESELECTION_COUNTER to the selected value;

– select the number of HARQ retransmissions from the allowed numbers that are configured by upper layers in allowedRetxNumberPSSCH included in pssch-TxConfigList and, if configured by upper layers, overlapped in allowedRetxNumberPSSCH indicated in cbr-pssch-TxConfigList for the highest priority of the sidelink logical channel(s) and the CBR measured by lower layers according to [6] if CBR measurement results are available or the corresponding defaultTxConfigIndex configured by upper layers if CBR measurement results are not available;

– select an amount of frequency resources within the range that is configured by upper layers between minSubchannel-NumberPSSCH and maxSubchannel-NumberPSSCH included in pssch-TxConfigList and, if configured by upper layers, overlapped between minSubchannel-NumberPSSCH and maxSubchannel-NumberPSSCH indicated in cbr-pssch-TxConfigList for the highest priority of the sidelink logical channel(s) and the CBR measured by lower layers according to [6] if CBR measurement results are available or the corresponding defaultTxConfigIndex configured by upper layers if CBR measurement results are not available;

– if transmission based on random selection is configured by upper layers:

– randomly select the time and frequency resources for one transmission opportunity from the resource pool, according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– else:

– randomly select the time and frequency resources for one transmission opportunity from the resources indicated by the physical layer according to subclause 14.1.1.6 of [2], according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– use the randomly selected resource to select a set of periodic resources spaced by the resource reservation interval for transmission opportunities of SCI and SL-SCH corresponding to the number of transmission opportunities of MAC PDUs determined in subclause 14.1.1.4B of [2];

– if the number of HARQ retransmissions is equal to 1 and there are available resources left in the resources indicated by the physical layer that meet the conditions in subclause 14.1.1.7 of [2] for more transmission opportunities:

– randomly select the time and frequency resources for one transmission opportunity from the available resources, according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– use the randomly selected resource to select a set of periodic resources spaced by the resource reservation interval for the other transmission opportunities of SCI and SL-SCH corresponding to the number of retransmission opportunities of the MAC PDUs determined in subclause 14.1.1.4B of [2];

– consider the first set of transmission opportunities as the new transmission opportunities and the other set of transmission opportunities as the retransmission opportunities;

– consider the set of new transmission opportunities and retransmission opportunities as the selected sidelink grant.

– else:

– consider the set as the selected sidelink grant;

– use the selected sidelink grant to determine the set of subframes in which transmissions of SCI and SL-SCH occur according to subclause 14.2.1 and 14.1.1.4B of [2];

– consider the selected sidelink grant to be a configured sidelink grant;

– else if SL_RESOURCE_RESELECTION_COUNTER = 0 and when SL_RESOURCE_RESELECTION_COUNTER was equal to 1 the MAC entity randomly selected, with equal probability, a value in the interval [0, 1] which is less than or equal to the probability configured by upper layers in probResourceKeep:

– clear the configured sidelink grant, if available;

– randomly select, with equal probability, an integer value in the interval [5, 15] for the resource reservation interval higher than or equal to 100ms, in the interval [10, 30] for the resource reservation interval equal to 50ms or in the interval [25, 75] for the resource reservation interval equal to 20ms, and set SL_RESOURCE_RESELECTION_COUNTER to the selected value;

– use the previously selected sidelink grant for the number of transmissions of the MAC PDUs determined in subclause 14.1.1.4B of [2] with the resource reservation interval to determine the set of subframes in which transmissions of SCI and SL-SCH occur according to subclause 14.2.1 and 14.1.1.4B of [2];

– consider the selected sidelink grant to be a configured sidelink grant;

– else, if the MAC entity is configured by upper layers to transmit using a pool of resources as indicated in subclause 5.10.13.1 of [8], the MAC entity selects to create a configured sidelink grant corresponding to transmission(s) of a single MAC PDU, and data is available in STCH, the MAC entity shall for a Sidelink process:

– select the number of HARQ retransmissions from the allowed numbers that are configured by upper layers in allowedRetxNumberPSSCH included in pssch-TxConfigList and, if configured by upper layers, overlapped in allowedRetxNumberPSSCH indicated in cbr-pssch-TxConfigList for the highest priority of the sidelink logical channel(s) and the CBR measured by lower layers according to [6] if CBR measurement results are available or the corresponding defaultTxConfigIndex configured by upper layers if CBR measurement results are not available;

– select an amount of frequency resources within the range that is configured by upper layers between minSubchannel-NumberPSSCH and maxSubchannel-NumberPSSCH included in pssch-TxConfigList and, if configured by upper layers, overlapped between minSubchannel-NumberPSSCH and maxSubchannel-NumberPSSCH indicated in cbr-pssch-TxConfigList for the highest priority of the sidelink logical channel(s) and the CBR measured by lower layers according to [6] if CBR measurement results are available or the corresponding defaultTxConfigIndex configured by upper layers if CBR measurement results are not available;

– if transmission based on random selection is configured by upper layers:

– randomly select the time and frequency resources for one transmission opportunity of SCI and SL-SCH from the resource pool, according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– else:

– randomly select the time and frequency resources for one transmission opportunity of SCI and SL-SCH from the resource pool indicated by the physical layer according to subclause 14.1.1.6 of [2] , according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– if the number of HARQ retransmissions is equal to 1:

– if transmission based on random selection is configured by upper layers and there are available resources that meet the conditions in subcause 14.1.1.7 of [2] for one more transmission opportunity:

– randomly select the time and frequency resources for the other transmission opportunity of SCI and SL-SCH corresponding to additional transmission of the MAC PDU from the available resources, according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– else, if transmission based on sensing or partial sensing is configured by upper layers and there are available resources left in the resources indicated by the physical layer that meet the conditions in subcause 14.1.1.7 of [2] for one more transmission opportunity:

– randomly select the time and frequency resources for the other transmission opportunity of SCI and SL-SCH corresponding to additional transmission of the MAC PDU from the available resources, according to the amount of selected frequency resources. The random function shall be such that each of the allowed selections can be chosen with equal probability;

– consider a transmission opportunity which comes first in time as the new transmission opportunity and a transmission opportunity which comes later in time as the retransmission opportunity;

– consider both of the transmission opportunities as the selected sidelink grant;

– else:

– consider the transmission opportunity as the selected sidelink grant;

– use the selected sidelink grant to determine the subframes in which transmission(s) of SCI and SL-SCH occur according to subclause 14.2.1 and 14.1.1.4B of [2];

– consider the selected sidelink grant to be a configured sidelink grant;

NOTE: For V2X sidelink communication, the UE should ensure the randomly selected time and frequency resources fulfil the latency requirement.

NOTE: For V2X sidelink communication, when there is no overlapping between the chosen configuration(s) in pssch-TxConfigList and chosen configuration(s) indicated in cbr-pssch-TxConfigList, it is up to UE implementation whether the UE transmits and which transmitting parameters the UE uses between allowed configuration(s) indicated in pssch-TxConfigList and allowed configuration(s) indicated in cbr-pssch-TxConfigList.

The MAC entity shall for each subframe:

– if the MAC entity has a configured sidelink grant occurring in this subframe:

– if SL_RESOURCE_RESELECTION_COUNTER = 1 and the MAC entity randomly selected, with equal probability, a value in the interval [0, 1] which is above the probability configured by upper layers in probResourceKeep:

– set the resource reservation interval equal to 0;

– if the configured sidelink grant corresponds to transmission of SCI:

– instruct the physical layer to transmit SCI corresponding to the configured sidelink grant;

– for V2X sidelink communication, deliver the configured sidelink grant, the associated HARQ information and the value of the highest priority of the sidelink logical channel(s) in the MAC PDU to the Sidelink HARQ Entity for this subframe;

– else if the configured sidelink grant corresponds to transmission of first transport block for sidelink communication:

– deliver the configured sidelink grant and the associated HARQ information to the Sidelink HARQ Entity for this subframe.

NOTE: If the MAC entity has multiple configured grants occurring in one subframe and if not all of them can be processed due to the single-cluster SC-FDM restriction, it is left for UE implementation which one of these to process according to the procedure above.

[TS 36.331, clause 5.10.13.1]

A UE capable of V2X sidelink communication that is configured by upper layers to transmit V2X sidelink communication and has related data to be transmitted shall:

1> if the conditions for sidelink operation as defined in 5.10.1d are met:

2> if in coverage on the frequency used for V2X sidelink communication as defined in TS 36.304 [4, 11.4]; or

2> if the frequency used to transmit V2X sidelink communication is included in v2x-InterFreqInfoList in RRCConnectionReconfiguration or in v2x-InterFreqInfoList within SystemInformationBlockType21:

3> if the UE is in RRC_CONNECTED and uses the PCell or the frequency included in v2x-InterFreqInfoList in RRCConnectionReconfiguration for V2X sidelink communication:

[…]

3> else:

4> if the cell chosen for V2X sidelink communication transmission broadcasts SystemInformationBlockType21:

5> if the UE is configured to transmit non-P2X related V2X sidelink communication, and if SystemInformationBlockType21 includes v2x-CommTxPoolNormalCommon or v2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency in sl-V2X-ConfigCommon and a result of sensing on the resources configured in v2x-CommTxPoolNormalCommon or v2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency is available in accordance with TS 36.213 [23]:

6> configure lower layers to transmit the sidelink control information and the corresponding data based on sensing (as defined in TS 36.321 [6] and TS 36.213 [23]) using one of the resource pools indicated by v2x-CommTxPoolNormalCommon or v2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency, which is selected according to 5.10.13.2;

5> else if the UE is configured to transmit P2X related V2X sidelink communication, and if SystemInformationBlockType21 includes p2x-CommTxPoolNormalCommon or p2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency in sl-V2X-ConfigCommon:

6> select a resource pool from p2x-CommTxPoolNormalCommon or p2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency according to 5.10.13.2, but ignoring zoneConfig in SystemInformationBlockType21;

6> transmit P2X related V2X sidelink communication according to 5.10.13.1a;

5> else if SystemInformationBlockType21 includes v2x-CommTxPoolExceptional in sl-V2X-ConfigCommon or v2x-CommTxPoolExceptional in v2x-InterFreqInfoList for the concerned frequency:

6> from the moment the UE initiates connection establishment until receiving an RRCConnectionReconfiguration including sl-V2X-ConfigDedicated, or until receiving an RRCConnectionRelease or an RRCConnectionReject; or

6> if the UE is in RRC_IDLE and a result of sensing on the resources configured in v2x-CommTxPoolNormalCommon or v2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency in Systeminformationblocktype21 is not available in accordance with TS 36.213 [23]:

7> configure lower layers to transmit the sidelink control information and the corresponding data based on random selection (as defined in TS 36.321 [6]) using the pool of resources indicated in v2x-CommTxPoolExceptional;

2> else:

3> configure lower layers to transmit the sidelink control information and the corresponding data based on sensing (as defined in TS 36.321 [6] and TS 36.213 [23]) using one of the resource pools indicated by v2x-CommTxPoolList in SL-V2X-Preconfiguration in case of non-P2X related V2X sidelink communication, which is selected according to 5.10.13.2, or using one of the resource pools indicated by p2x-CommTxPoolList in SL-V2X-Preconfiguration in case of P2X related V2X sidelink communication, which is selected according to 5.10.13.2, and in accordance with the timing of the selected reference as defined in 5.10.8;

The UE capable of non-P2X related V2X sidelink communication that is configured by upper layers to transmit V2X sidelink communication shall perform sensing on all pools of resources which may be used for transmission of the sidelink control information and the corresponding data. The pools of resources are indicated by SL-V2X-Preconfiguration, v2x-CommTxPoolNormalCommon, v2x-CommTxPoolNormalDedicated in sl-V2X-ConfigDedicated, or v2x-CommTxPoolNormal in v2x-InterFreqInfoList for the concerned frequency, as configured above.

NOTE 1: If there are multiple frequencies for which normal or exceptional pools are configured, it is up to UE implementation which frequency is selected for V2X sidelink communication transmission.

[TS 36.331, clause 5.5.3.1]

The UE capable of CBR measurement when configured to transmit non-P2X related V2X sidelink communication shall:

1> if in coverage on the frequency used for V2X sidelink communication transmission as defined in TS 36.304 [4, 11.4]; or

1> if the concerned frequency is included in v2x-InterFreqInfoList in RRCConnectionReconfiguration or in v2x-InterFreqInfoList within SystemInformationBlockType21:

2> if the UE is in RRC_IDLE:

3> if the concerned frequency is the camped frequency:

4> perform CBR measurement on the pools in v2x-CommTxPoolNormalCommon and v2x-CommTxPoolExceptional if included in SystemInformationBlockType21;

3> else if v2x-CommTxPoolNormal or v2x-CommTxPoolExceptional is included in v2x-InterFreqInfoList for the concerned frequency within SystemInformationBlockType21:

4> perform CBR measurement on pools in v2x-CommTxPoolNormal and v2x-CommTxPoolExceptional in v2x-InterFreqInfoList for the concerned frequency in SystemInformationBlockType21;

3> else if the concerned frequency broadcasts SystemInformationBlockType21:

4> perform CBR measurement on pools in v2x-CommTxPoolNormalCommon and v2x-CommTxPoolExceptional if included in SystemInformationBlockType21 broadcast on the concerned frequency;

2> if the UE is in RRC_CONNECTED:

[…]

1> else:

2> perform CBR measurement on pools in v2x-CommTxPoolList in SL-V2X-Preconfiguration for the concerned frequency;

[TS 36.331, clause 5.10.13.2]

For a frequency used for V2X sidelink communication, if zoneConfig is not ignored as specified in 5.10.13.1, the UE configured by upper layers for V2X sidelink communication shall only use the pool which corresponds to geographical coordinates of the UE, if zoneConfig is included in SystemInformationBlockType21 of the serving cell (RRC_IDLE)/ PCell (RRC_CONNECTED) or in RRCConnectionReconfiguration for the concerned frequency, and the UE is configured to use resource pools provided by RRC signalling for the concerned frequency; or if zoneConfig is included in SL-V2X-Preconfiguration for the concerned frequency, and the UE is configured to use resource pools in SL-V2X-Preconfiguration for the frequency, according to 5.10.13.1. The UE shall only use the pool which is associated with the synchronization reference source selected in accordance with 5.10.8.2.

1> if the UE is configured to transmit on p2x-CommTxPoolNormalCommon or on p2x-CommTxPoolNormal in v2x-InterFreqInfoList in SystemInformationBlockType21 according to 5.10.13.1; or

1> if the UE is configured to transmit on p2x-CommTxPoolList-r14 in SL-V2X-Preconfiguration according to 5.10.13.1; or

1> if zoneConfig is not included in SystemInformationBlockType21 and the UE is configured to transmit on v2x-CommTxPoolNormalCommon or v2x-CommTxPoolNormalDedicated; or

1> if zoneConfig is included in SystemInformationBlockType21 and the UE is configured to transmit on v2x-CommTxPoolNormalDedicated for P2X related V2X sidelink communication and zoneID is not included in v2x-CommTxPoolNormalDedicated; or

1> if zoneConfig is not included in the entry of v2x-InterFreqInfoList for the concerned frequency and the UE is configured to transmit on v2x-CommTxPoolNormal in v2x-InterFreqInfoList or p2x-CommTxPoolNormal in v2x-InterFreqInfoList in RRCConnectionReconfiguration; or

1> if zoneConfig is not included in SL-V2X-Preconfiguration for the concerned frequency and the UE is configured to transmit on v2x-CommTxPoolList in SL-V2X-Preconfiguration for the concerned frequency:

2> select the first pool associated with the synchronization reference source selected in accordance with 5.10.8.2;

24.1.12.3 Test description

24.1.12.3.1 Pre-test conditions

System Simulator:

SS-NW

– Cell 1

Table 24.1.12.3.1-1: Cell parameters values

Cell

Frequency

PLMN

1

f1

PLMN1

Note 1: The Frequency f1 shall be the anchor frequency pre-configured in the UE/USIM.

– System information combination 29 as defined in TS 36.508 [18] clause 4.4.3.1 is used in Cell1.

SS-UE

– SS-UE1. As defined in TS 36.508 [18], configured for and operating as V2X Sidelink Communication receiving device on the resources which the UE is expected to use for transmission, as defined in TS 36.508 [18] clause 6.2.3.5.

– SS-UE2. As defined in TS 36.508 [18], configured for and operating as V2X Sidelink Communication transmitting device on the resources which the UE is expected to use for transmission (as specified in the relevant procedure steps in Table 24.1.12.3.2-3, with transmit pattern defined in Table 24.1.12.3.2-2).

– Simulation of transmission on 50 subframes (fully occupied) out of 100 subframes (100 ms) in order to achieve 50% congestion. This equals one SS-UE transmitting on 5 (5 full subframes utilizing all RBs on all subchannels of the transmitting TTI) out of 10 consecutive subframes, according to the transmit pattern shown in Table 24.1.12.3.1-2, and repeating continuously the same transmit pattern in subsequent frames. SS-UE2 transmits dummy random data on all RBs on the specified subchannels implying congestion on PSCCH and PSSCH.

Table 24.1.12.3.1-2: Transmit pattern for simulation of 50% congestion

50% Congestion

Subframe 0

Subframe 1

Subframe 2

Subframe 3

Subframe 4

Subframe 5

Subframe 6

Subframe 7

Subframe 8

Subframe 9

SC1

SC1

SC1

SC1

SC1

SC1

SC1

SC1

SC1

SC1

SC2

SC2

SC2

SC2

SC2

SC2

SC2

SC2

SC2

SC2

SC3

SC3

SC3

SC3

SC3

SC3

SC3

SC3

SC3

SC3

SC4

SC4

SC4

SC4

SC4

SC4

SC4

SC4

SC4

SC4

SC5

SC5

SC5

SC5

SC5

SC5

SC5

SC5

SC5

SC5

SC6

SC6

SC6

SC6

SC6

SC6

SC6

SC6

SC6

SC6

SC7

SC7

SC7

SC7

SC7

SC7

SC7

SC7

SC7

SC7

SC8

SC8

SC8

SC8

SC8

SC8

SC8

SC8

SC8

SC8

SC9

SC9

SC9

SC9

SC9

SC9

SC9

SC9

SC9

SC9

SC10

SC10

SC10

SC10

SC10

SC10

SC10

SC10

SC10

SC10

Note: SC stands for subchannel. Each column above represents one TTI of 1ms. Bold font means blocked due to transmission.

UE:

– V2X sidelink related configuration.

– The UE is authorised to perform V2X Sidelink Communication, with ProSe Per-Packet Priority (PPPP) set to 2 (FFS).

– The UE is equipped with below information in UE or in a USIM containing default values (as per TS 36.508 [18]) except for those listed in Table 24.1.12.3.1-3.

Table 24.1.12.3.1-3: UE/ USIM configuration

USIM field

Priority

Value

Access Technology Identifier

EFUST

Service n°119 (V2X) supported

EFVST

As per TS 36.508 [18] clause 4.9.3.4

EFV2X_CONFIG

SL-V2X-Preconfiguration field as defined in Table 24.1.12.3.3-9

Preamble:

– The UE is in State Generic Radio Bearer Establishment, UE Test Mode E Activated (State 3A) on Cell 1 according to TS 36.508 [18].

24.1.12.3.2 Test procedure sequence

Table 24.1.12.3.2-1 illustrates the downlink power levels and other, if any, changing parameters to be applied for the SS-UE at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble, while columns marked "T1" … "Tn" are to be applied subsequently. The exact instants on which these values shall be applied are described elsewhere in the present clause.

Table 24.1.12.3.2-1: Time instances of simulated SS-UE power level and parameter changes

Parameter

Unit

SS-UE2

Comment

T0

S-RSRP

dBm/15kHz

"Off"

T1

S-RSRP

dBm/15kHz

-76

The power level of the SS-UE2 is set so that upon S-RSSI measurement by the UE the result is above the value of threshS-RSSI-CBR

Table 24.1.12.3.2-2: Main behaviour

St

Procedure

Message Sequence

TP

Verdict

U – S

Message

1

Close UE Test Loop with bit E0 in UE test loop mode E LB setup IE set to one (transmission mode).

<–

CLOSE UE TEST LOOP

–

–

2

The UE responds with CLOSE UE TEST LOOP COMPLETE.

–>

CLOSE UE TEST LOOP COMPLETE

–

–

3

UE transmits a SidelinkUEInformation message requesting resources for transmission of V2X sidelink communication in RRC_CONNECTED in the next 5 sec.

–>

SidelinkUEInformation

–

–

4

SS-NW releases the connection.

<–

RRCConnectionRelease

–

–

5

Wait for 1100ms to allow the UE to measure the congestion.

–

–

–

–

6

Check: Does the UE transmit data on the V2X sidelink communication with Tx parameters of sl-CBR-PSSCH-TxConfig[1] specified in Table 24.1.12.3.3-2?

(Note 1)(Note 2)

–>

STCH PDCP SDU packet

1

P

7

SS configures:

SS-UE2 is reconfigured to achieve 50% congestion continuously in consecutive timeframes according to the transmission pattern shown in Table 24.1.12.3.1-2, with Tx power accordance with “T1" defined in Table 24.1.12.3.2-1.

–

–

–

–

8

Wait for 1100ms to allow the UE to measure the congestion.

–

–

–

–

9

Check: Does the UE transmit data on the V2X sidelink communication with withTx parameters of sl-CBR-PSSCH-TxConfig[2] specified in Table 24.1.12.3.3-2?

(Note 1)(Note 3)

–>

STCH PDCP SDU packet

1

P

10

Generic procedure as specified in TS 36.508 [18] Table 4.5.3.3-1

–

–

–

–

11

The SS transmits an OPEN UE TEST LOOP message to exit the UE test loop mode.

<–

OPEN UE TEST LOOP

–

–

12

The UE transmits an OPEN UE TEST LOOP COMPLETE message.

–>

OPEN UE TEST LOOP COMPLETE

–

–

13

UE transmits a SidelinkUEInformation message to indicate no more V2X sidelink transmission.

–>

SidelinkUEInformation

–

–

14

The SS transmits a DEACTIVATE TEST MODE message to de-activate UE radio bearer test mode procedure.

<–

DEACTIVATE TEST MODE

–

–

15

The UE transmits a DEACTIVATE TEST MODE COMPLETE message.

–>

DEACTIVATE TEST MODE COMPLETE

–

–

16

SS-NW releases the connection.

<–

RRCConnectionRelease

–

–

Note 1: Although the UE is expected to transmit continuously, The reception of one STCH PDCP SDU packet is sufficient for achieving the Pass verdict.

Note 2: 316 bytes of MAC PDU (300 bytes of STCH PDCP SDU and headers) are mapped to a 325 bytes (TBS) of data, using MCS =17 and Nprb = 8 from TS 36.213 [30] Table 7.1.7.1-1 and Table 7.1.7.2.1-1 which gives TBS = 2600 bits/TTI.

Note 3: 316 bytes of MAC PDU (300 bytes of STCH PDCP SDU and headers) are mapped to a 317 bytes (TBS) of data, using MCS = 8 and Nprb = 18 from TS 36.213 [30] Table 7.1.7.1-1 and Table 7.1.7.2.1-1 which gives TBS = 2536 bits/TTI.

24.1.12.3.3 Specific message contents

Table 24.1.12.3.3-1: SystemInformationBlockType21 for Cell 1 (preamble, Table 24.1.12.3.2-2)

Derivation Path: 36.508 [18], Table 4.4.3.3-19

Information Element

Value/remark

Comment

Condition

SystemInformationBlockType21-r14 ::= SEQUENCE {

sl-V2X-ConfigCommon-r14 SEQUENCE {

v2x-CommTxPoolNormalCommon-r14

Not Present

}

v2x-InterFreqInfoList-r14 SEQUENCE {

SL-InterFreqInfoV2X-r14[1] SEQUENCE {

v2x-CommCarrierFreq-r14

f5 in TS 36.508 [18] clause 6.2.3.5

v2x-UE-ConfigList-r14 SEQUENCE (SIZE (1.. maxCellIntra)) OF SL-V2X-InterFreqUE-Config-r14 {

1 entry

SL-V2X-InterFreqUE-Config-r14[1] SEQUENCE {

v2x-CommTxPoolNormal-r14

SL-CommResourcePoolV2X-r14 (Table 24.2.4.3.3-6)

}

}

}

cbr-CommonTxConfigList-r14

SL-CBR-CommonTxConfigList-r14 (Table 24.1.12.3.3-2)

}

}

Table 24.1.12.3.3-2: SL-CBR-CommonTxConfigList-r14 (Table 24.1.12.3.3-1)

Derivation Path: 36.331 clause 6.3.8

Information Element

Value/remark

Comment

Condition

SL-CBR-CommonTxConfigList-r14 :: = SEQUENCE

cbr-RangeCommonConfigList-r14 SEQUENCE (SIZE (1..maxSL-V2X-CBRConfig-r14)) OF SL-CBR-Levels-Config-r14 {

sl-CBR-Levels-Config-r14[1] ::= SEQUENCE (SIZE (1..maxCBR-Level-r14)) OF SL-CBR-r14 {

1 entry

sl-CBR-r14[1]

100

INTEGER(0..100)

}

sl-CBR-Levels-Config-r14[2] ::= SEQUENCE (SIZE (1..maxCBR-Level-r14)) OF SL-CBR-r14 {

3 entries

sl-CBR-r14[1]

20

INTEGER(0..100)

sl-CBR-r14[2]

60

INTEGER(0..100)

sl-CBR-r14[3]

100

INTEGER(0..100)

}

}

sl-CBR-PSSCH-TxConfigList-r14 SEQUENCE (SIZE (1..maxSL-V2X-TxConfig-r14)) OF SL-CBR-PSSCH-TxConfig-r14 {

3 entries

sl-CBR-PSSCH-TxConfig[1]

SL-CBR-PSSCH-TxConfig-r14 with condition LOW_CBR (Table 24.1.12.3.3-3)

sl-CBR-PSSCH-TxConfig[2]

SL-CBR-PSSCH-TxConfig-r14 with condition MID_CBR (Table 24.1.12.3.3-3)

sl-CBR-PSSCH-TxConfig[3]

SL-CBR-PSSCH-TxConfig-r14 with condition HIGH_CBR (Table 24.1.12.3.3-3)

}

}

Table 24.1.12.3.3-3: SL-CBR-PSSCH-TxConfig-r14 (Table 24.1.12.3.3-2)

Derivation Path: 36.331 clause 6.3.8

Information Element

Value/remark

Comment

Condition

SL-CBR-PSSCH-TxConfig-r14 ::= SEQUENCE {

cr-Limit-r14

10000

INTEGER(0..10000)

tx-Parameters-r14:: = SEQUENCE{

minMCS-PSSCH-r14

17

LOW_CBR

8

MID_CBR

3

HIGH_CBR

maxMCS-PSSCH-r14

17

LOW_CBR

8

MID_CBR

3

HIGH_CBR

minSubChannel-NumberPSSCH-r14

1

maxSubchannel-NumberPSSCH-r14

10

allowedRetxNumberPSSCH-r14

n0

maxTxPower-r14

Not Present

}

}

Condition

Explanation

LOW_CBR

The Tx parameters for V2X in low CBR scenario. The CBR level is lower than 20% which is configured in sl-CBR-r14[1].

MID_CBR

The Tx parameters used for V2X communication in mid CBR scenario. The CBR level is from 20% to 60% which is configured in sl-CBR-r14[2].

HIGH_CBR

The Tx parameters used for V2X communication in high CBR scenario. The CBR level is higher than 60% which is configured in sl-CBR-r14[3].

Table 24.1.12.3.3-4: Void

Table 24.1.12.3.3-5: Void

Table 24.1.12.3.3-6: SL-CommResourcePoolV2X-r14 (Table 24.1.12.3.3-1)

Derivation Path: 36.508 [18], Table 4.6.3-20C using conditions BITMAP_6 and COND_TX

Information Element

Value/remark

Comment

Condition

SL-CommResourcePoolV2X-r14 ::= SEQUENCE {

sizeSubchannel-r14

n5

Independent to BW

threshS-RSSI-CBR-r14

23

-66 dBm

BW10

cbr-pssch-TxConfigList-r14 ::= SEQUENCE (SIZE (1..8)) OF SL-PPPP-TxConfigIndex-r14{

2 entries

sl-PPPP-TxConfigIndex-r14[1] ::= SEQUENCE {

priorityThreshold-r14

1

defaultTxConfigIndex-r14

0

cbr-ConfigIndex-r14

0

tx-ConfigIndexList-r14 := SEQUENCE (SIZE (1..maxCBR-Level-r14)) OF Tx-ConfigIndex-r14 {

1 entry

tx-ConfigIndex[1]

2

}

}

sl-PPPP-TxConfigIndex-r14[2] ::= SEQUENCE {

priorityThreshold-r14

2

defaultTxConfigIndex-r14

2

cbr-ConfigIndex-r14

1

tx-ConfigIndexList-r14 := SEQUENCE (SIZE (1..maxCBR-Level-r14)) OF Tx-ConfigIndex-r14 {

3 entries

tx-ConfigIndex[1]

0

tx-ConfigIndex[2]

1

tx-ConfigIndex[3]

2

}

}

}

}

Table 24.1.12.3.3-7: SidelinkUEInformation (step 3, Table 24.1.12.3.2-2)

Derivation Path: 36.508 [18], table 4.6.1-21B

Information Element

Value/remark

Comment

Condition

SidelinkUEInformation-r12 ::= SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

sidelinkUEInformation-r12 SEQUENCE {

nonCriticalExtension SEQUENCE {

nonCriticalExtension SEQUENCE {

v2x-CommRxInterestedFreqList-r14 SEQUENCE (SIZE (1..maxFreqV2X-r14)) OF INTEGER (1..maxFreq)

[f5 in TS 36.508 [18] clause 6.2.3.5]

Configured in SIB21

v2x-CommTxResourceReq-r14 SEQUENCE {

v2x-CommTxFreqList-r14 SEQUENCE (SIZE (1..maxFreqV2X-r14)) OF { INTEGER (1..maxFreq) }

[f5 in TS 36.508 [18] clause 6.2.3.5]

Configured in SIB21

v2x-TypeTxSyncList-r14 SEQUENCE (SIZE (1..maxFreqV2X-r14)) OF SEQUENCE {

SL-TypeTxSync-r14

Not checked

}

v2x-DestinationInfoList-r14 SEQUENCE (SIZE (1..maxSL-Dest-r12)) OF SEQUENCE {

Not checked.

SL-DestinationIdentity-r12

Not checked

}

}

}

}

}

}

}

}

Table 24.1.12.3.3-8: SidelinkUEInformation (V2X) (step 13, Table 24.1.12.3.2-2)

Derivation Path: 36.508 [18], table 4.6.1-21B

Information Element

Value/remark

Comment

Condition

SidelinkUEInformation-r12 ::= SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE {

sidelinkUEInformation-r12 SEQUENCE {

nonCriticalExtension SEQUENCE {

nonCriticalExtension SEQUENCE {

v2x-CommRxInterestedFreqList-r14 SEQUENCE (SIZE (1..maxFreqV2X-r14)) OF INTEGER (0..maxFreqV2X-1-r14){}

Not Present

v2x-CommTxResourceReq-r14 SEQUENCE (SIZE (1..maxFreqV2X-r14)) OF SEQUENCE {}

Not Present

}

}

}

}

}

}

Table 24.1.12.3.3-9: SL-V2X-Preconfiguration

Derivation Path: 36.508 [18], table 4.10.1.1-1

Information Element

Value/remark

Comment

Condition

SL-V2X-Preconfiguration-r14 ::= SEQUENCE {

anchorCarrierFreqList-r14 SEQUENCE (SIZE (1..maxFreq)) OF SEQUENCE {

1 entry

ARFCN-ValueEUTRA-r9[1]

f1 in TS 36.508 [18] clause 6.2.3.1

}

}