12 Processing delay requirements for RRC procedures

38.3313GPPNRProtocol specificationRadio Resource Control (RRC)Release 15TS

The UE performance requirements for RRC procedures are specified in the following tables. The performance requirement is expressed as the time in [ms] from the end of reception of the network -> UE message on the UE physical layer up to when the UE shall be ready for the reception of uplink grant for the UE -> network response message with no access delay other than the TTI-alignment (e.g. excluding delays caused by scheduling, the random access procedure or physical layer synchronisation). In case the RRC procedure triggers BWP switching, the RRC procedure delay is the value defined in the following table plus the BWP switching delay defined in TS 38.133 [14], clause 8.6.3.

Figure 12.1-1: Illustration of RRC procedure delay

Table 12.1-1: UE performance requirements for RRC procedures for UEs

Procedure title:

Network -> UE

UE -> Network

Value [ms]

Notes

RRC Connection Control Procedures

RRC reconfiguration

RRCReconfiguration

RRCReconfigurationComplete

10

RRC reconfiguration (scell addition/release)

RRCReconfiguration

RRCReconfigurationComplete

16

RRC reconfiguration (LTE/NR SCG establishment/ modification/ release)

RRCReconfiguration

RRCReconfigurationComplete

16

RRC reconfiguration (Intra-NR mobility with LTE/NR SCG establishment/ modification/ release)

RRCReconfiguration

RRCReconfigurationComplete

16

RRC setup

RRCSetup

RRCSetupComplete

10

RRC Release

RRCRelease

NA

RRC re-establishment

RRCReestablishment

RRCReestablishmentComplete

10

RRC resume

RRCResume

RRCResumeComplete

6 or 10

Value=6 applies for a UE supporting reduced CP latency for the case of RRCResume message only including MAC and PHY configuration, reestablishPDCP and reestablishRLC for SRB2 and DRB(s), and no DRX, SPS, configured grant, CA or MIMO re-configuration will be triggered by this message. Further, the UL grant for transmission of RRCResumeComplete and the data is transmitted over common search space with DCI format 0_0.

In this scenario, the RRC procedure delay [ms] can extend beyond the reception of the UL grant, up to 7 ms.

For other cases, Value = 10 applies.

RRC resume (scell addition)

RRCResume

RRCResumeComplete

16

Initial AS security activation

SecurityModeCommand

SecurityModeComplete/SecurityModeFailure

5

Inter RAT mobility

Handover to NR

RRCReconfiguration (sent by other RAT)

RRCReconfigurationComplete

NA

The performance of this procedure is specified in TS 36.133 [40] clauses 5.3.4.2 and 5.3.5.2 in case of handover from E-UTRA to NR.

Handover from NR

MobilityFromNRCommand

NA

The performance of this procedure is specified in TS 38.133 [14], clauses 6.1.2.1.2 and 6.1.2.2.2.

Other procedures

UE assistance information

UEAssistanceInformation

NA

UE capability transfer

UECapabilityEnquiry

UECapabilityInformation

80

Counter check

CounterCheck

CounterCheckResponse

5

Annex A (informative): Guidelines, mainly on use of ASN.1