eNodeB LTE FDD solution Training.pdf
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Transcript of eNodeB LTE FDD solution Training.pdf
www.huawei.com
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
eNodeB LTE FDD Product Description
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page1
Contents
1. System Overview
2. System Structure
3. Typical Configuration
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
eNodeB in LTE/SAE Network
E-UTRAN: Evolved UMTS Terrestrial Radio Access Network
EPC: Evolved Packet Core network
MME: Mobility Management Entity
S-GW: Server Gateway
Page2
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page 3
Huawei eNodeB Base Station Description
Distributed eNodeBDBS3900Indoor eNodeB
BTS3900
Outdoor eNodeBBTS3900A
Huawei Fourth Generation Base Station Three standardized modules shared by all eNodeB portfolio
Micro eNodeB
BBU
RFU
Multi-modal BBU2U 19-in rack mount designSimultaneous 2G/3G/4G
operation
Multi-modal RRU 60W/4CCDMA/WCDMA/LTEGSM/UMTS/LTEWiMAX
RRUFuture release
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
eNodeB Modules
Page4
Baseband UnitBBU3900
RF UnitRFU/RRU
Cabinet
CPRI
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
Capacity Specification
Item Specification
Maximum number of cells (DBS3900)
4 x 2 MIMO: 6 cells (1.4 MHz/3 MHz/5 MHz/10 MHz/15 MHz/20 MHz)
2 x 2 MIMO: 12 cells (1.4 MHz/3 MHz/5 MHz/10 MHz/15 MHz/20 MHz)
Maximum throughput per cell (20 MHz)
Downlink rate at the Media Access Control (MAC) layer: 150 Mbit/s
Uplink rate at the MAC layer: 70 Mbit/s
Maximum throughput per eNodeB
Downlink: 450 Mbit/s
Uplink: 300 Mbit/s
Maximum number of UEs in RRC_CONNECTED mode in an eNodeB
One LBBP configured (bandwidth of 1.4 MHz): 1008
One LBBP configured (bandwidth of 3 MHz/5 MHz/10 MHz/15 MHz/20 MHz): 1800
More than one LBBP configured (bandwidth of 1.4 MHz): 3024
More than one LBBP configured (bandwidth of 3 MHz/5 MHz/10 MHz/15 MHz/20 MHz): 5400
Maximum number of concurrent Data Radio Bearers (DRBs) per UE
8
Page5
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page6
Contents
1. System Overview
2. System Structure
3. Auxiliary Devices
4. Typical Configuration
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page7
Contents
2. System Structure
2.1 Base Band Unit(BBU) Introduction
2.2 RF Unit(RFU, RRU) Introduction
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page8
BBU3900
Dimensions: 86mm x 442mm x 310mm (H x W x D)
Power consumption: 132 W (3 x 10 MHz) ~300 W (3 x 20 MHz)
Weight: ≤12 kg
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page9
Physical Modules of the BBU3900
Slots for BBU3900 boards and modules
3 x 20MHz 2T2R typical configuration
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page10
LMPT (The LTE Main Processing & Transmission Unit )
Mandatory, Maximum 2 boards, hold in slot 7(default) or 6
Function:
Performs configuration management, equipment management,
performance monitoring, signaling processing, and radio resource
management
Controls all boards in the system
Provides the system clock and transmission ports
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page11
LBBP (The LTE Baseband Processing Unit)
Mandatory, Maximum 3 boards, hold in slot 1, 2 or 3 (default)
Function:
Processes uplink and downlink baseband signals
Provides CPRI ports for communication between BBU3900 and RRUs
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page12
Specification of LBBP
Board Number of Cell Bandwidth of Cell ANT Configuration
LBBPc 3 15M/20M 2T2R
6 5M/10M 2T2R
3 5M/10M 4T4R
1 15M/20M 4T4R
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page13
UPEU (The Universal Power and Environment interface Unit)
Mandatory, Maximum 2 modules, hold in slot 4 (default) and
slot 5
Functions:
Converts -48 V DC or +24 V DC power into +12 V DC power
Provides ports for transmission of two RS485 signals and eight dry
contact signals
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page14
Clock Synchronization Modes
GPS Clock
If an eNodeB is synchronized with the GPS clock, the eNodeB obtains clock
synchronization signals from the GPS through the USCU. In this case, both
frequency synchronization and time synchronization are applicable
IEEE1588 V2 Clock
IEEE1588 defines the Precision Time Protocol (PTP), which targets precise
synchronization of distributed and independent clocks in measurement and control
systems, with the precision to microseconds. IEEE1588 V2 supports frequency
synchronization and time synchronization
In LTE applications, high-accuracy frequency synchronization and time
synchronization can be achieved between clock servers and eNodeBs by IEEE1588
V2 synchronization
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page15
Clock Synchronization Modes (Cont.)
Clock over IP
Clock over IP is a Huawei proprietary frequency synchronization
technology, which is based on an IP clock server/client architecture. It
supports only frequency synchronization
Free Running
The clock enters the free running mode if no reference clock is available
after the oscillator is warmed up or if the clock has lost its reference input
for a period of time longer than the timer of the holdover mode
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page16
Contents
2. System Structure
2.1 Base Band Unit(BBU) Introduction
2.2 RF Unit(RFU, RRU) Introduction
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
RF Unit Category
There are two kinds of RF units in LTE BTS, RFU and RRU
The RFU is type of radio frequency unit adopted in BTS3900,
BTS3900A, BTS3900L
The RRU is a type of radio remote unit adopted in DBS3900
Page17
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
FDD RF Unit Types
Types RRU Name TX/RX FRE. BandOutput Power
G/U/LeRAN
version
RRU
RRU3201 2T2R 2.6G 2*40W L eRAN1.0/2.0
RRU3221 2T2R 2.6G 2*40W L eRAN2.1
RRU3908 2T2R1.8G
900M2*30W2*40W
GL/UL/GU eRAN2.0
RRU3220 2T2R 800M 2*40W L eRAN2.0
RRU3222 2T2R 800M 2*40W L eRAN2.1
RFU
LRFU 2T2R 2.6G/AWS 2*40W L eRAN2.0
mRFU 1T2R 1.8G/900M 1*60W GL eRAN2.0
LRFU 2T2R 700M 2*60W L eRAN2.0
Page18
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
LRFU
LTE Radio Frequency Units (LRFUs) work in Frequency
Division Duplex (FDD) mode
The LRFU processes uplink and downlink services and
controls and monitors internal boards or modules.
LRFU is RF unit which adopted by BTS3900,
BTS3900A, BTS3900L
Page19
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
MRFU
One Multi-Mode Radio Frequency Unit (MRFU)
supports a maximum of six carriers, which support
GSM/UMTS/LTE
The MRFU processes uplink and downlink services
and controls and monitors internal boards or
modules.
MRFU is RF unit which adopted by BTS3900,
BTS3900A, BTS3900L
Page20
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
Specifications of RRU3221
Page21
Item Specification
FrequencyBand/
Bandwidth(FDD)
Frequencyband
RX band(MHz)
TX band(MHz)
Supported bandwidth(MHz)
2.6 GHz(Band 7)
2500 to2570
2620 to2690
5, 10, 15, or 20
Dimensions (H x W x D)
485 mm (19.09 in.) x 300 mm (11.22 in.) x 170 mm (6.7 in.) (23.5 L, with a housing)
Weight Not greater than 19 kg (41.9 lb) (with a housing)
Maximumoutput power
2 × 40 W
Powerconsumption
370 W (2X40 100% Load)
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page22
RET Modes
STMA Mode Direct Connection Mode
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved. Page23
Contents
1. System Overview
2. System Structure
3. Typical Configuration
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
Hardware Quantities in Typical Configurations
Page24
ConfigurationNumbers
of LMPT
Numbers of
LBBP
Number ofRRUs/RFUs
Numbers of
Antennas
3 x 15 MHz/20MHz, 2T2R
1 LBBPc: 13(6, if MRFUs are required)
3 (dual-polarizedantennas)
6 x 5 MHz/10MHz, 2T2R
1 LBBPc: 1 66 (dual-polarizedantennas)
3 x 5 MHz/10MHz, 4T4R
1LBBPc: 1
63 (antennas withfour ports)
1 x 15 MHz/20MHz, 4T4R
1 LBBPc:1 21 (antennas withfour ports)
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
Topologies on the CPRI interface
Page26
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
TMN Topologies – Scenario A
Page27
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
TMN Topologies – Scenario B
Page28
Copyright © 2011 Huawei Technologies Co., Ltd. All rights reserved.
TMN Topologies – Scenario C
Page29