06 Rn24026en30gla1 Rg30 (BSS) Site Solution
06 Rn24026en30gla1 Rg30 (BSS) Site Solution
06 Rn24026en30gla1 Rg30 (BSS) Site Solution
RN24026EN30GLA1
RN24026EN30GLA1
Module objectives
After completing this learning element, the participant will be able to:
Operate Energy Efficient Coverage
Operate Ext 1PPS+ToD Synch Support for Flexi BTS
RN24026EN30GLA1
Content
RG301623
RN24026EN30GLA1
Content
RG301623
RN24026EN30GLA1
RG301623
RN24026EN30GLA1
The Multiradio BTS exploits two TX paths needed e.g. for LT DL MIMO, also in GSM with
Intelligent DL Diversity scheme (IDD) and also Antenna Hopping and therefore optimizes
the coverage
Benefits
This feature uses additional Power Amplifiers in Multiradio BTSs that leads to the
following benefits:
RN24026EN30GLA1
BSC
S16
Flexi Multiradio
EX5.0
Flexi Multiradio
GF1.0
NetAct
OSS5.4 CD Set2
Network element
Required hardware
BTS
RN24026EN30GLA1
Energy Efficient Coverage feature utilises those antennas and PA's in most efficient way
with IDD transmission
Gain of IDD is 4..5dB in urban areas from which 1..2dB remains as net gain
Number of modulators in Multicarrier BTS are not the main constraint, so IDD would not
spent expensive BTS resources
Antenna Hopping may be used in same way. 1..2 dB net gain means 26..58% savings in
BTS power for the same coverage.
The IDD feature stays usable for Flexi EDGE with Flexi EDGE Double Power license as
currently.
RN24026EN30GLA1
Concurrent GSM-LTE mode means that both the technologies share the nominal power of the
same MCPA (Multi Carrier Power Amplifier)
The implementation of IDD/AH requires the same HW configuration as it is for LTE 2x2 MIMO
(2TX & 2RX)
In case coverage improvement does not need to be provided to the network the IDD/AH
gain can be utilized to reduce DL TX power on GSM TRXs without coverage
deterioration
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That saved TX power can be used by LTE, which is sharing the same RF resources with GSM
or
In case TX output power assigned to LTE is not changed and lower TX output power is used
for GSM a certain gain in the total BTS energy consumption can be achieved
RN24026EN30GLA1
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Assumption:
RFM 60W with:
1 LTE 10MHz @ 20W
4 TRXs @ 10W
Assumed IDD gain 3.5 dB TX max power reduced by 3 dB (1 dB step possible with RG301704)
Case 1 LTE uses higher output power:
5 W per TRX used (3dB reduced according to assumed IDD gain) 4 x 5 = 20W (20W savings)
20W can be given to LTE 1 LTE 10MHz @ 40W
Result: 1 LTE 10MHz @ 40W
Case 2 BTS energy consumption is decreased:
5 W per TRX used (3dB reduced according to assumed IDD gain) 4 x 5 = 20W (20W savings)
Result: 20W/60W 33% lower MCPA utilization
RN24026EN30GLA1
Radio Modules and antenna(s) configuration for IDD/AH are similar like for 2x2 DL
MIMO
Supported configurations below:
X
RX main
RXMC
LNA
RX main
RX div
MCPA
RXMC
LNA
LNA
RX
LNA
RX div
TX
RFM
Duplexer
MCPA
RX
TX
Duplexer
RFM
X
RX main
RX div
MCPA
RXMC
LNA
LNA
LNA
RX main
RX
LNA
RX main
RX
RX div
RXMC
LNA
TX
TX
RX main
RRH
MCPA
LNA
Duplexer
MCPA
RFM
Duplexer
TX
Duplexer
RFM
MCPA
Duplexer
TX
2G utilizes efficiently two pipes needed for LTE DL MIMO by transmitting DL divesity IDD/AH
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RN24026EN30GLA1
Intelligent Downlink
Delay Diversity
Antenna Hopping
Throughput
0.1
FER
Normal
AH
IDD
0.01
Single TX antenna
IDD or AH
with two TX
antennas
0.001
Coverage
10
SNR
13
RN24026EN30GLA1
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Full Name
Abbreviated
Name
Managed Object
Description
dualTrxUsage
TRX
RN24026EN30GLA1
Release
Release
System
Release
BSC
DX200
Platform
BTS
UltraSite
BTS
MetroSite
BTS
Talk Family
RG30
S16
BTS
Flexi
Edge
BTS
Multiradio
BTS Flexi
Multiradio 10
BTS Flexi
Compact
BTS
BTSPlus
BTS
Horizon
NetAct
SGSN
Release
15
MSC
-
RAN
-
RN24026EN30GLA1
MS
-
Licensing
-
Licence Key
Control