4.9.23 Test procedure for establishing unicast mode NR sidelink communication / Peer UE side

38.508-13GPP5GSPart 1: Common test environmentRelease 17TSUser Equipment (UE) conformance specification

4.9.23.1 Scope

The purpose of this procedure is to establish unicast mode sidelink communication.

4.9.23.2 Procedure description

4.9.23.2.1 Initial conditions

The UE is in state 1N-B, 3N-B or 4-A.

4.9.23.2.2 Procedure sequence

Table 4.9.23.2.2-1: Procedure for establishing unicast mode sidelink communication (Peer UE side)

St

Procedure

Message Sequence

U – S

Message

1

The NR-SS-UE sends a DIRECT LINK ESTABLISHMENT REQUEST message.

<–

PC5-S: DIRECT LINK ESTABLISHMENT REQUEST

2

The UE sends a DIRECT LINK SECURITY MODE COMMAND message.

–>

PC5-S: DIRECT LINK SECURITY MODE COMMAND

3

The NR-SS-UE sends a DIRECT LINK SECURITY MODE COMPLETE message.

<–

PC5-S: DIRECT LINK SECURITY MODE COMPLETE

4

The UE sends a DIRECT LINK ESTABLISHMENT ACCEPT message.

–>

PC5-S: DIRECT LINK ESTABLISHMENT ACCEPT

5

The NR-SS-UE sends an RRCReconfigurationSidelink message to establish a unicast mode SL-DRB.

<–

PC5-RRC: RRCReconfigurationSidelink

6

The UE sends an RRCReconfigurationCompleteSidelink message.

–>

PC5-RRC: RRCReconfigurationCompleteSidelink

4.9.23.3 Specific message contents

All specific message contents shall be according subclause 4.6 and 4.7B.

Table 4.9.23.3-1: DIRECT LINK ESTABLISHMENT REQUEST (Table 4.9.23.2.2-1, Step 1)

Derivation Path: Table 4.7.4-7 with condition Rx

Table 4.9.23.3-2: DIRECT LINK SECURITY MODE COMMAND (Table 4.9.23.2.2-1, Step 2)

Derivation Path: Table 4.7.4-18 with condition Tx

Table 4.9.23.3-3: DIRECT LINK SECURITY MODE COMPLETE (Table 4.9.23.2.2-1, Step 3)

Derivation Path: Table 4.7.4-19 with condition Rx

Table 4.9.23.3-4: DIRECT LINK ESTABLISHMENT ACCEPT (Table 4.9.23.2.2-1, Step 4)

Derivation Path: Table 4.7.4-8 with condition Tx

Table 4.9.23.3-5: RRCReconfigurationSidelink (Table 4.9.23.2.2-1, Step 5)

Derivation Path: Table 4.6.1A-3 with condition RX and SL_DRB

Table 4.9.23.3-5: RRCReconfigurationCompleteSidelink (Table 4.9.23.2.2-1, Step 6)

Derivation Path: Table 4.6.1A-4 with condition TX