Leliwa Technical Bulletin
Date: Date:
12.03.2010
Revision:
001/LME/010
Author:
Jakub Bluszcz
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Copyright ©2010 Leliwa. All Rights Reserved.
LTE measurement events events
Leliwa Technical Bulletin
LTE measurement measurement events
Table of contents
Table of contents ............................................................................................................................................................................2 Parameter s-measure .....................................................................................................................................................................3 Event A1 .........................................................................................................................................................................................4 Event A2 .........................................................................................................................................................................................5 Event A3 .........................................................................................................................................................................................6 Event A4 .........................................................................................................................................................................................7 Event A5 .........................................................................................................................................................................................8 Event B1 .........................................................................................................................................................................................9 Event B2 .......................................................................................................................................................................................10 Speed dependant scaling of measurement parameters ................................................................................................................11 Acronyms and Abbreviations ........................................................................................................................................................12 References ...................................................................................................................................................................................13 Disclaimer.....................................................................................................................................................................................14
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RSRP s-cell
Parameter ss-measure
s-measure
MEASUREMENTS
time
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Event A1
triggerQuantity
Serving becomes better than threshold
Hysteresis
a1-Threshold reportAmount
reportQuantity reportOnLeave
reportInterval
timeToTrigger
triggerType=event eventId=eventA1
time
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Event A2
triggerQuantity
Serving becomes worse than threshold
a2-Threshold Hysteresis reportAmount
reportQuantity
reportOnLeave
reportInterval
triggerType=event eventId=eventA2
timeToTrigger
time
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Event A3
triggerQuantity
Neighbour becomes offset better than serving Hysteresis
offset s-cell n-cell reportAmount
reportQuantity
time triggerType=event eventId=eventA3
reportOnLeave timeToTrigger
reportInterval
Offset = a3-offset + offsetFreqs + cellIndividualOffsets – offsetFreqn - cellIndividualOffsetn
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Event A4
triggerQuantity
Neighbour becomes offset better than threshold
Hysteresis
offset a4-Threshold
reportAmount reportQuantity
time reportOnLeave
triggerType=event eventId=eventA4
timeToTrigger
reportInterval
Offset = offsetFreqn + cellIndividualOffsetn
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Event A5 Serving becomes worse than thr.1 and neighbour becomes better than thr.2 triggerQuantity
condition 2 fulfilled condition 1 fulfilled a5-Threshold2 offset
Hysteresis
s-cell a5-Threshold1 reportAmount
Hysteresis
reportQuantity
n-cell
time
reportOnLeave triggerType=event timeToTrigger reportInterval eventId=eventA5 offset = offsetFreqn + cellIndividualOffsetn
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Event B1
utra-RSCP/utraEcN0 RSSI(RXLEV)
Inter RAT neighbour becomes better than threshold
Hysteresis
OffsetFreq reportAmount
a1-ThresholdUTRA/GERAN
reportQuantity
time reportOnLeave
triggerType=event eventId=eventB1
timeToTrigger reportInterval
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Event B2 Serving becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2) triggerQuantity
utra-RSCP/utraEcN0 RSSI(RXLEV)
condition 2 fulfilled condition 1 fulfilled b2-Threshold2UTRA/GERAN OffsetFreq
Hysteresis
s-cell b2-Threshold1 reportAmount
Hysteresis
reportQuantity triggerType=event eventId=eventB2
n-cell
time reportOnLeave timeToTrigger reportInterval
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triggerQuantity
Speed dependant scaling of measurement parameters
time timeToTrigger
timeToTriger:=timeToTrigger*sf-Medium
(medium-mobility detected)
timeToTriger:=timeToTrigger*sf-High
(high-mobility detected)
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Acronyms and Abbreviations AKA CCO CDMA DCCH DL EGPRS GERAN HO MME NAS PCCH PLMN PSI RAT RLC RNTI RRC RSCP RSRP RXLEV TMSI UE UL UTRAN
Authentication and Key Agreement Cell Change Order Code Division Multiple Access Dedicated Control Channel Downlink Enhanced General Packet Radio Service GSM/EDGE Radio Access Network Handover Mobility Management Entity Non-access Stratum Signalling Paging Control Channel Public Land Mobile Network Public Service Identity Radio Access Technology Radio Link Control Radio Network Temporary Identifier Radio Resource Control Received Signal Code Power Reference Signal Received Power Received Signal Level Temporary Mobile Subscriber Identity Number User Equipment Uplink UMTS Terrestrial Radio Access Network
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References This section contains the locations of various specifications, document references and useful information where you can learn more about this subject.
[1]
3GPP TS 36.331 Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification
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Disclaimer This document is based on Leliwa training materials.
Information in this document is subject to change without notice. Leliwa assumes no responsibility for any errors that may appear in this document.
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