LTE Rough GuideWCDMAHSDPAHSUPAHSPA+LTELTE
ADVANCE2004200520062008/2009201038414MBPS28150DL 75UL100DL
FAST1285.7MBPS11481G SLOW1501. For spatial multiplexing, CQI is
reported based on per codeword. The maximum number of codeword in
LTE is two.There are seven transmission modes in LTE, each one is
corresponding to certain multiple antenna techniques. For each
transmission mode, certain combination of CQI report is defined in
the specs, based on periodic/aperiodic, wideband/UE selected
subband/higher layer configured subband, No PMI/single PMI/multiple
PMI. Since RI changes slower than CQI/PMI, it is reported with a
longer interval on periodic report. It is reported together with
CQI/PMI on aperiodic report since the resource on PUSCH is less
limited.
&G&FSecurity Level
&DHuawei Proprietary - Restricted
DistributionPage&Pof&N
MLBMLB= Mobility Load Balance (Only for inter freq or IRAT) nor
for Itra FreqTrigering Factor ( PRB Utiliation & Number of
UE's)Air Interface Load = PRB Usage & Number of UE's in
synchronized stateHardware Load = CPU & DSPTransport Network
Layer Load = S1 Bandwidth usage
MROMROMobility Robust OptimiationSONSelf Organizing NetworkMRO
collects handover performance statistics for different scenarios,
identifies abnormal handover scenarios, and optimizes the
handover-related parameter settings. MRO helps to reduce the number
of abnormal radio link failures (RLFs) caused by premature and
delayed handovers, handovers to wrong cells, or ping-pong handovers
to achieve better resource utilization and improve user
experiencethe triggering quantity and reporting quantity used in
handover measurements for MRO are based on reference signal
received power (RSRP).1)- Handover scenario identification2)-
Handover scenario handling3)- Result monitoringOPTperiodMRO
Optimization PeriodCollects HO related measurements (successful
handover and abnormal senarios"early/delayed/ping pong HO) in this
period and then make a decisionWhen OPTperiod approches its end MRO
make parameter adjustments based on number of abnormal HO
