Upload
buikien
View
224
Download
1
Embed Size (px)
Citation preview
ACE RNX Channel Emulator ACE-RNX
Product Introduction
2
A C E R N X S p e c i f i c a t i o n s a n d F e a t u r e s
3
• TDD and FDD operation • 380–3850 MHz frequency range • 100 MHz bandwidth • Dynamic range
− RF Input Range +23 dBm(+15 dbCF) to -50 dBm (@35 dB above noise floor)
− RF Output Range -25 dBm to -120 dBm (0 dBm peak) • RF fidelity
− Noise floor < -166 dBm/Hz @ -40 dBm output power − EVM < -40 dB
• Bi-directional operation @ >80 dB circulator isolation • 4 RF LO’s per ACE-RNX • 2 kHz max doppler @ 3.8 GHz • 1 msec playback rate • 1.1 usec insertion delay
ACE RNX – Specifications
4
• Up to 1msec bulk delay. • 0.1 dB resolution input/output attenuation • Selectable input power tracking w/ 10msec trigger rate Noise • AWGN across entire bandwidth • -101 dBm/Hz to -162 dBm/Hz NPD • +35 to -30 dB SNR, 0.1 dB resolution • Dynamic uplink noise for TTI bundling and closed loop
power control Channel modeling • Raleigh, Ricean, Pure Doppler and constant doppler modes • 24 taps per channel • Industry-defined standard models
− 3GPP/3GPP2 2G/3G/LTE models − HST & Moving propagation models − Geometric Channel Models (IMT-A, SCME)
ACE RNX – Parameter control
5
Unique features • Internal combiner/splitter for seamless 2x2 CA
testbed cabling • Cloud based test executive • LTE synchronous downlink interference • Graphical test case creation tool
ACE RNX – Unique features
6
• Dimension − 0.45m (W) x 0.24m (H) x 0.73m (D) (MX) − Can be mounted into lab rack
• Weight − 36 kg
• Power Requirements − Input: 100-240 VAC, 50-60 Hz, Max. 8.0 Amps at 120V,
4.0 Amps at 240V − Mains supply voltage fluctuations are not to
exceed 10 percent of the nominal supply voltage
ACE RNX – Box specifications
7
MIMO and CA working modes
Working Mode MIMO topology System topology support Uni-directional 2x2 MIMO Up to 8 links Bi-directional 2x2 MIMO Up to 4 links
Uni-directional 4x4 MIMO Up to 4 links Bi-directional 4x4 MIMO Up to 2 links
CA 2x2 MIMO Up to 6DL / 2UL CA 4x4 MIMO Up to 3DL / 1UL
8
D i r e c t o r 3 T e s t E x e c u t i v e S W
9
Director 3 is a cloud based UI
Server
Location 2
…
Client 1 Client 2 Client N
Server
Location 1
…
10
Director 3 - Cloud Based Architecture
• No desktop software - Access with any web browser No need for dedicated PCs
• Access the test bed from anywhere, any time globally Better test bed and lab space utilization
• Centralized Dashboard: - View all discovered RNXs - Run tests/control RNXs - Reset RNXs
• Test cases and test results stored on database - Ensures consistency in testing
• Customer server - No server fees - No security concerns
Offers more benefits than just traditional VNC
11
Director 3 - Cloud Based Architecture
• No desktop software - Access with any web browser No need for dedicated PCs
• Access the test bed from anywhere, any time globally Better test bed and lab space utilization
• Centralized Dashboard: - View all discovered RNXs - Run tests/control RNXs - Reset RNXs
• Test cases and test results stored on database - Ensures consistency in testing
• Customer server - No server fees - No security concerns
Offers MUCH more benefits than just traditional VNC
12
Director 3 Requirements
• Windows 7 Pro with SP1 (Eng version) • NET framework 4.5.2 • Microsoft AppFabric 1.1 • Microsoft SQL Server Express 2014 • D3 is a webserver. User can access with any web browser. Eg,
http://127.0.0.1
13
Testbed Config
All the properties needed to set up a connection
between the BS and MS in one screen – Input
power, IPT, Crest factor, power meters etc.
Graphical method of creating a testbed and interacting with
corresponding properties
Click on link or a port to access different types of
properties
14
Link Builder
User can access properties for
multiple links, single link multiple ports or
a single link
User can add as many core ACE
links or AzPlayer links
User add as many links as
their test requires
15
Play Control
Play control and status
Select previously created Testbed and test case from link builder or
scenario builder
Mapped links to the testbed
Click on arrows to access DL or UL
properties
Access to other sections of play control
Properties accessed by
clicking on ports, links or multiple links together
16
V i r t u a l N e t w o r k E n v i r o n m e n t
17
LTE-A HetNet
• LTE‐A uses network densification/HetNet (a network of cells of different sizes) to enhance system capacity
• One consequence of network densification is increased interference
• LTE-A offers many complex and advanced mechanisms (e.g., ICIC, eICIC, FeICIC, NAICS, and advanced receivers) to handle this interference
18
HetNet lab testing
• How to test such function in chipset? – Macro and micro need to sync up – Massive amount of cables and infra
19
VNE – Industry First Integrated Network Environment Emulation
VNE creates the interfering cells
Industry’s first Integrated, Advanced Signal Generation Technology
• Embedded Complex Signal Generation Capability LTE downlink (eNB) in the first release
• Generate and playback LTE downlinks Emulate Macro cells, Small cells Configure cell parameters Add channel conditions
• Integrated LTE receivers for synchronization Time or frame based synchronization (Sync) needed to test xICIC, ABS Eliminates the need for an external sync Enables interoperability with live infrastructure and any base station
emulator
20
Create & Play Signals Dynamically
Design & Generate Signal • Graphically create
technology specific signals • Select LTE parameters Bandwidth, Transmission
Modes FDD Cyclic prefix, PHICH CSRS ABS pattern (standard,
custom) • Apply standard channel
models • Create signal profiles
Playback • Dynamically configure 1 or
more signals relative to real test bed signals Integrated LTE receiver
monitors test bed Set Timing, power, frequency
• Use as virtual macro/small cell
• Dynamically update during playback
21
VNE Specifications
• Interferer types – FDD LTE downlink – Synchronized and unsynchronized
• Can synchronize to up to 4 eNodeB’s • Can synchronize to input signal of
+23 dBm to -50 dBm – LTE macro cell and small cell
• Interferer numbers – 12 independent interferers per
ACE-RNX – 3 interferers per link
• Link level parameters – -15 to +40 dB proportion (SIR) – -1 to 1sec delay (100 nsec res) – -100 to 100 kHz offset (10 Hz res)
• Interferer Controllable Parameters – Bandwidth – Cyclic prefix – PHICH duration – Number of eNB antennas – Type of eNB array – PCI (cell ID) – PDSCH
• Transmission mode • Traffic loading • Rank proportion • ABS pattern • CFI value
– Propagation conditions • Channel, doppler, correlation
22
S c e n a r i o B u i l d e r
23
Scenarios in the LTE-A World
• Lets take a LTE-A scenario, with 8 eNBs, each with CA and the device moving through this environment
• Testing this scenario requires changing: Power (or path loss) Noise Interference Doppler Power delay profile Correlation Propagation delay
• This has to be done 8 times (for each sector), for every device (across links) at the desired resolution
• Creating these test scenarios manually is NOT a viable option
24
Scenario Builder
• Scenario Builder is a powerful wizard to create the complex scenarios needed for LTE-A, HetNet – Drag, drop and design that allows creation of complex scenarios – Seamless, automatic computation of RF environment (power,
channel conditions, etc.) for the defined scenario – Automatic configuration of the RNX test bed to map to the scenario
at hand
25
Scenario Builder Enables Creation of Complex Scenarios
Scenario Builder is a powerful wizard to create the complex scenarios needed for LTE-A, HetNet
• Drag, drop and design that allows creation of complex scenarios
• Seamless, automatic computation of RF environment (power, channel conditions, etc.) for the defined scenario
• Automatic configuration of the RNX test bed to map to the scenario at hand
• Scenario builder library for commonly used scenarios: 3GPP carrier aggregation scenarios Operator deployment scenarios
26
Scenario Builder UI
Controls to manage the
canvas
Different types of devices you can
drop on the canvas
A waypoint indicates a point in the mobility
path. User can choose channel conditions at
the beginning of waypoint
User can drag this slider to determine
route of mobility path
Properties associated with an ENB or a
waypoint
Location and coverage area of
the cell
27
Scenario Builder Example Use Cases
• Single-Cell Testing: Near Cell, Far cell scenarios Attenuation sweeps Receive sensitivity tests
• Handover Testing: Basic/Complex HO Cell edge Ping-Pong iRAT HO
• Carrier Aggregation Testing Inter-Band CA Intra-Band CA
• Small Cell Testing: Small cell – Macro HO Small cell Ping-Pong
28
F i e l d T o L a b ( V i r t u a l D r i v e T e s t P l a y b a c k )
29
FTL Intro
• Field testing has some inherent challenges – Time consuming – Expensive – Results are not repeatable since the real world is dynamic – R&D may not be local to where you see the issue
30
The Solution - Field-to-Lab!
FTL is a solution that recreates the RF environment from the Field, in the Lab
31
How Does FTL Work?
Drive log
from RF Scanner/DM
Device in the Lab AzMapper AzPlayer
ACE
Platform
FTL
Support for popular platforms such as: Qualcomm QXDM JDSU W1314A PCTEL SeeGull Accuver XCAL Anite Nemo Huawei PROBE
• Intelligently post-processes drive log data to remove erroneous data
• Provides L1/L2/L3 visualization capabilities to help narrow down problem areas
• Generates playback files to be used with AzPlayer
• Streams RF channel information to the ACE MX
• Recreates the complex RF environment captured in the drive log
• Creates a repeatable RF environment.
• Device subject to field conditions
• FTL also allows user to subject device to variants of the field condition by modifying aspects of the environment
32
AzMapper - Settings
33
AzMapper – Raw Data
34
AzMapper - Per Sector View
• Enables visualization of the timeline of sectors and powers
• Accelerates detection of RF anomalies such as rising pilots or dead zones
35
AzMapper – Environmental Profiling
• Enables profiling of the environment as Urban, Rural etc.
• Facilitates correlation of performance with environment
• Helps optimize drive testing
36
AzMapper - Contextual Display of Information
• Highlights locations of critical call events (handovers etc.)
• Enables identification of problem spots
• Facilitates debugging of issues by providing an integrated view of RF and L2/L3
37
AzMapper in Action
• Accurately recreates the field RF environments via AzPlayer + ACE
• Accurate reconstruction of: - Power (RSSI, RSRP/RSCP - Noise (Ec/Io, SINR) - Velocity - Multi-path fading - Frequency shift - Antenna correlation - Propagation delay 4. Automate tests with Test
Builder
1. Capture field environment with a device or scanner
Field Data Log
2. Import field data into AzMapper
Support for popular platforms such as: Qualcomm QXDM JDSU W1314A PCTEL SeeGull R&S TSM-W Accuver XCAL Anite Nemo Ascom TEMS
3. Playback field data in the lab (AzPlayer + ACE)
AzPlayer + ACE
• Fully automate test cases - ACE MX - eNBs and BSEs - Handsets and USB data cards - QXDM, Metrico Datum, TEMS - FTP, iPerf, web browsing • Create test schedule or run 24/7
testing • Generates detailed reports - Throughput - Voice quality (PESQ) - Call Success/Failure - Call setup time - Handover duration - And more…
Test Builder
• Post-processes drive log data to remove erroneous data
• Provides visualization capabilities to help analysis of RF environment
• Intelligently maps real world sectors to fit lab test bed • Generates AzPlayer playback file
38
A C E R N X B e n e f i t s S u m m a r y
39
ACE-RNX Customer Benefits Summary
Aspect Details Customer Benefit Integrated network environment emulation (VNE)
• Integrated emulation of HetNet environment
• Seamless & synchronized signal generation
• Fully configurable signals
• Significant cost savings in building test bed • Simplified test bed (setup & ongoing savings) • Ability to configure signals on the fly –
significant time savings • More reliable (less dependencies on 3rd party) • Easier to maintain, reconfigure test bed
Manage networks and links for complex tests (Scenario Builder)
• Drag, drop and design for creation of scenarios
• Automated computation of conditions
• Automatic configuration of the RNX test bed
• Enables creation of complex scenarios that can’t be created through traditional means
• Removes the onus on the user to calculate and define the network environment for the scenario
• Significant time and effort savings
• Dynamic Playback • Dynamic uplink noise • 1 ms playback • Higher dynamic range
• Enables new test scenarios (ex. TTI bundling for TRUE VoLTE testing)
• Playback of more extensive real world conditions
• Playback of high power scenarios
2017-9 MG No. ACE-RNX-E-L-1-(1.00)