WCA’s 11th Annual International Symposium & Business Expo
San Jose, CA, Jan. 12-14, 2005
Advanced Broadband Wireless
Standards from ETSI
and Co-operation with WiMAX
Prof. Dr. Bernd Friedrichs
- Marconi Communications, Germany
- ETSI BRAN Chairman
Overview
• ETSI BRAN structure
• Status of BRAN HiperAccess and HiperMAN
• Details of HiperAccess Technology
• Relations to standardization bodies and forums
• Co-operation ETSI - WiMAX Forum
• Conclusions
Bernd Friedrichs, EG/FW-RSE
1
ETSI
European Telecommunications Standards Institute
• ~700 member companies
from 55 contries in 5 continents
• ~11,000 technical standards and
deliverables since 1988
• ~60 co-operation agreements
• Market driven organization
members decide about work
program and resource allocation
• Established in 1988,
as non-profit making organization,
based in Sophia Antipolis,
Nice Cote d‘Azur (France)
• www.etsi.org
Bernd Friedrichs, EG/FW-RSE
2
ETSI Working Methods
Decision Making
•
Members shall endeavour to reach consensus on all issues.
•
If lack of consensus: voting can be performed using individual
member company weights
(1...45 depending on company revenues, one vote per company, approval requires 71%)
Open Standardization Process
•
Each ETSI member can actively or passively participate (incl. voting).
•
All documents and standards are always freely accessible.
IPR Policy
•
Each ETSI member has the obligation to inform about Essential IPRs
it becomes aware of.
•
IPR owners shall grant irrevocable licenses on FRAND (fair,
reasonable and non-discriminatory) terms and conditions.
Bernd Friedrichs, EG/FW-RSE
3
Global Wireless Standards
IEEE 802
ETSI
WAN
WiMAX*
WiFi*
IEEE 802.16
WirelessMAN
IEEE 802.11
WirelessLAN
IEEE 802.15
Bluetooth
UMTS, EDGE
(GSM)
MAN
HiperMAN &
HiperAccess
LAN
HiperLAN/2
RLAN
PAN
ETSI
BRAN
*) Industry fora
for promotion
and certfication
Bernd Friedrichs, EG/FW-RSE
4
BRAN Structure
ETSI BRAN
(Broadband Radio Access Networks)
Chairman: Bernd Friedrichs (Marconi)
HiperLan/2
HiperAccess
HiperMan
(High Performance LAN)
(High Performance Access)
(High Performance MAN)
Wireless LAN
at 5 GHz, connection-based,
OFDM, 54 Mbps, QoS
Fixed broadband wireless
PMP system above 11 GHz,
single carrier, 120 Mbps
Fixed broadband wireless
PMP system below 11 GHz,
OFDM, IP-optimized
PHY
PHY
PHY
DLC
DLC
DLC
CL
CL
Profiles
etc.
Testing
MIB
Testing
Regulatory Competence Group
Spectrum regulatory issues, Harmonized Standards
Bernd Friedrichs, EG/FW-RSE
5
BRAN Status
Transition to TC (Technical Commitee) in 2004
ToR (Terms of Reference)
 BRAN is responsible for all broadband radio (access) systems
 Several vertical groups for technology-dependent activities
 Regulatory competence concentrated in horizontal RCWG
- to develop Harmonised Standards covering essential requirements under
article 3.2 of the R&TTE directive,
- to assist regulatory bodies to define spectrum requirements and radio conformance
specifications for new broadband radio networks
Extensions under discussion
 Non-interoperable systems (i.e. proprietary, coexistence specs)
 Transport systems (e.g. classical Point-to-Point hops)
 Higher layers including network aspects
(e.g. IRAP = International Roaming Access Protocols (WiFi))
 Other
(e.g. WIGWAM = Wireless Gigabit (RLAN) with Advanced Multimedia Support)
 Merger with ETSI TM4
Bernd Friedrichs, EG/FW-RSE
6
BRAN Characteristics (1 of 5)
General
ETSI Experience
 GSM, DECT, 3G, Tetra, etc.
 The working methods and approaches have given very good
results in terms of interoperability
 3G considers the test specs „very good value for money“
Base standards (for air interface)
 PHY and DLC layers independet of core network
 Convergence sublayers for packet- and cell-based core networks
Base standards (for network)
 The successful deployment of large-scale portable or mobile
networks requires also the development of interfaces and
protocols above the scope of the air interface
 Work already started on MIB and management
Bernd Friedrichs, EG/FW-RSE
7
BRAN Characteristics (2 of 5)
Testing
Test specifications
 Normative part of standard
 Controlled in the open forum in the same way as the base specs
 Actual testing and certification is left to industry and their
associations
Test methods
 Good results from using advanced spec methods and languages
 For the first time, virtual protocol testing (UDP/IP based, via API)
was used, showing the capability to detect and resolve potential
problems in implementations before the HW becomes available
Bernd Friedrichs, EG/FW-RSE
8
BRAN Characteristics (3 of 5)
STFs
Testing organization
 Work is progressed through STF (Special Task Force)
 STF funded by ETSI, operating under the guidance of BRAN
 Supported by PTCC (Protocol and Testing Competence Center)
BRAN STF
 All BRAN conformance test specifications were produced in STFs
 More than 70 documents were published in the last two years
 About $ 2,000,000 funding was spent for BRAN STFs
 About $ 520,000 total cost were spent for HiperMAN / WiMAX
Bernd Friedrichs, EG/FW-RSE
9
BRAN Characteristics (4 of 5)
Testing - Comparison of Approaches
Interoperability testing = Two implementations trying to interwork
 Can test only normal behaviour
 Can test exceptional behaviour only by chance
Golden unit testing = An implementation that is somehow representing a
standard trying to interwork with an implementation under test
Conformance testing = A test tool evaluating an implementation under
test
 Can test both normal and exceptional behaviour
 Can repeat the specific test any time and any number of times (following
corrections for example)
ETSI has achieved good results using a combination of conformance
testing followed by some level of interoperability testing
Bernd Friedrichs, EG/FW-RSE
10
BRAN Characteristics (5 of 5)
Standards for Base and Test Specifications
Basic protocol standard development
•
•
•
•
Abstract Syntax Notation (ASN.1) message structure specification, ITU-T X.680
Packed encoding rules (PER) for transfer encoding, ITU-T X.691
Message Sequence Charts (MSC) for message flow description, ITU-T Z.120,
Specification and Description Language (SDL) specification, ITU-T Z.100
- SDL models used to precisely define the protocol behaviour.
- Simulations and validations to early remove ambiguities and erroneous protocol behaviour.
Protocol test specifications
•
•
•
PICS
TSS & TP
ATS
(ITU-T X.291...296, ISO/IEC 9646)
Protocol Implementation Conformance Statement
Test Suite Structure and Test Purposes
Abstract Test Suite (TTCN)
- Significant effort was spent (30 man month of funded expert work plus voluntary contribution
by member companies and ETSI PTCC work)
Radio test specifications
•
•
RCT
EN
Radio Conformance Test
Harmonized Standard (European Norm), covering the essential
requirements of article 3.2 of the EC R&TTE Directives
Bernd Friedrichs, EG/FW-RSE
11
BRAN HiperAccess (1 of 4)
Overview
Main applications
 Cellular backhauling
 SOHO, SME
 Typically too expensive for residential access / WLL / LMDS
ETSI BRAN developed protocol stack and radio specifications
Optimized for ATM and Ethernet
Strong points
 Suitable for immediate deployment in GSM and UMTS networks
 Technical quality
–
–
–
–

Precision of specification
Well controlled optional features
Absence of ambiguities
Test specifications with ETSI strength (MBS2)
High spectral efficieny, high QoS, high reliability
Bernd Friedrichs, EG/FW-RSE
12
BRAN HiperAccess (2 of 4)
Set of Specifications
Base Specs
Test Specs
in total
~2000 pages
HA PHY
TS 101999
HA RCT
TS 102123
HA DLC
TS 102000
HA PICS
TS 102149-01
HA TSS&TP
TS 102149-02
HA ATS
TS 102149-03
HA CBCL 1
TS 102115-01
HA PICS
TS 102147-01-01
HA TSS&TP
TS 102147-01-02
HA ATS
TS 102147-01-03
HA CBCL 1
TS 102115-02
HA PICS
TS 102147-02-01
HA TSS&TP
TS 102147-02-02
HA ATS
TS 102147-02-03
HA CBCL 1
TS 102117-01
HA PICS
TS 102148-01-01
HA TSS&TP
TS 102148-01-02
HA ATS
TS 102148-01-03
HA CBCL 1
TS 102117-02
HA PICS
TS 102148-02-01
HA TSS&TP
TS 102148-02-02
HA ATS
TS 102148-02-03
Bernd Friedrichs, EG/FW-RSE
HA API
TS 102327
13
BRAN HiperAccess (3 of 4)
Basic Features PHY Layer
Focus on frequency bands
• 40.5 - 43.5 GHz
• 31.8 - 33.4 GHz
• 27.5 - 29.5 GHz
• 24.5 - 26.5 GHz
• other lower frequencies
Channel size = 28 MHz, Baudrate = 22.4 MBaud
• Paired bands
(FDD mode, fixed asymmetric rates)
• Unpaired bands (TDD mode, adaptive asymmetric rates)
• Optimum trade-off between costs, peak data rate and statistical
multiplex gain
Important
parameters
D a ta ra te s (M b it/s )
T ra n s m it p o w e r
Range
Bernd Friedrichs, EG/FW-RSE
D o w n lin k (A P  A T )
U p lin k (A T  A P )
2 0 ...1 2 0
2 0 ...8 0
(typ ic a lly 8 0 )
(typ ic a lly 5 0 )
15 dB m
14 dB m
u p to 1 2 k m
(h a rd lim it fro m ra n g in g , e ffe c tive ly
d e p e n d in g o n a v a ila b ility a n d ra in z o n e )
14
BRAN HiperAccess (4 of 4)
Achievements and Plans
High stability of base and test specifications achieved

Only minor corrections expected in 2005

Further harmonization with IEEE 802.16-WirelessMAN-SC
Commercial roll-out

First BRAN-compliant product was rolled-out in December 2004
(Point-to-Point derivative of HA)

Full HiperAccess-compliant products will be available in 2005

High interest from numerous operators
Bernd Friedrichs, EG/FW-RSE
15
Time Division Multiplex (TDM) in Downlink,
Time Division Multiplex Access (TDMA) in Uplink
TDM downlink
...
AT 2
AT 2
AP
...
MAC MAC MAC MAC
PDU PDU PDU PDU
AT 1
...
AP
TDMA uplink
AT 1
AT n
1
2
3
4
5
t
AT n
Further important properties of downlink and uplink
D o w n lin k
L in k b u d g et &
ra in fa d in g &
m u ltip ath p ro p a g atio n
C o -c h a n n e l in terfere n c e
T ra n s m it p ow e r
(s a m e b a n d w id th )
Bernd Friedrichs, EG/FW-RSE
U p lin k
a p p ro x . id e n tic al
tim e -in va ria n t
fro m o th er A P s
c o n s ta n t fo r a ll A T s
tim e -va ria n t
fro m o th er A T s
in d ivid u a l p e r A T
(d is ta n c e , m o d u la tio n , fa d in g )
fo r c o n sta n t R X p ow e r
16
from data interface
Transceiver Chain
Operation
on groups
of MAC PDUs
corresponding
to RS CWs,
UL only
Only payload
of unicast
MAC data PDUs
is encrypted
ARQ
TX buffer
Operation on
complete frame
except
preamble(s),
initiated
per frame
Scrambling
Encryption
Up to four
MAC PDUs
per RS CW
Outer
RS Encoder
Including trellis
termination
for each RS CW,
only present for
some PHY modes
One preamble
for one or
several FEC
blocks
Inner
Convol.
Encoder
Preambles
with QPSK
Insert
Preamble
Modulation
Burst
Request for ARQ re-transmission
MAC
PDU
MAC
PDU
MAC
PDU
MAC
PDU
RS
codeword
Symbol
stream
FEC
block
Radio link
(physical
channel)
(cont.in DL,
bursty in UL)
to data interface
RS error detection flag for ARQ
Burst
ARQ
RX buffer
Decryption
Bernd Friedrichs, EG/FW-RSE
Descrambler
Outer
RS Decoder
Inner
Convol.
Decoder
Remove
Preamble,
Equalizer
17
DeModulation
PHY Modes (1 of 9)
Definition, Robustness vs. Efficiency
Infobits
Codebits
RSencoder
Convol.
encoder
R outer 
l n
Symbols
Modulator
(2M-ary)

infobit
data rate

bandwidth
PHY mode defined by
- concatenated coding and
- modulation
(where „PHY“ refers to the
physical layer of OSI model)
Bernd Friedrichs, EG/FW-RSE
0
1
2
3
4
3
4
B  rs (1   )
 bandwidth
( M codebits/s ymbol)
( l  1 ... 4 PDU/codewo rd,
n  54 ... 55 length of PDU
t  8 correctabl e errors)
Spectral efficiency
Pulse
shaping
rs  symbol rate
R inner  [1 / 2 , 1]
l  n  2t
Waveforms
PHY
M ode
(C Z )
(a ll s ets )
(a ll s ets )
(s e t 1 )
(s e t 1 )
(s e t 2 )
(s e t 2 )
rs  R outer  R inner  M

R outer  R inner  M
1
B
R o u te r
(fo r l= 4)
0 .6 5
0 .9 3
0 .9 3
0 .9 3
0 .9 3
0 .9 3
0 .9 3
(  0 . 25 )
R in n e r
M
1 /2
2 /3
1
7 /8
5 /6
1
1
2
2
2
4
6
4
6
S p e c tra l
e ffic ie n c y
0 .5 2
0 .9 9
1 .4 9
2 .6 0
3 .7 2
2 .9 8
4 .4 6
18
C /(N + I) re q u ire d
7
8
12
18
25
dB
dB
dB
dB
dB
Frame Structure Overview
Frame
Preamble
TDM zone
Control
zone
(PHY mode # 0)
Broadcast
Frame
Info
PHY mode #1
region
Downlink
map
ARQ
map
PHY mode #2
region
Uplink
map
PHY mode #3
region
PHY mode #4 Frame
padding
region
Downlink
frame
Control zone
enlarged
Uplink
frame
to frame # (N-2)
frame offset
Invited
ranging
bursts
Bandwidth
request
contention
window
Granted
UL burst
Granted
UL burst
Granted
UL burst
Granted
UL burst
Order of ranging burst and
contention window is just an example
Bernd Friedrichs, EG/FW-RSE
19
PHY Modes (3 of 9)
DL Frame with Concatenated Coding
1 m s ( f ix e d d u r a t io n )
v a r ia b le le n g t h
C o n tro l z o n e
P r e a m b le
( 3 2 s y m b o ls )
TD M zone
v a r ia b le le n g t h
v a r ia b le le n g t h
v a r ia b le le n g t h
PHY m ode 1
r e g io n
PHY m ode 2
r e g io n
P H Y m o d e 4 ( la s t )
r e g io n
F ra m e
P a d d in g
M o d u la t e d & e n c o d e d ( R S + C C ) s e q u e n c e
in c lu d in g t r e llis t e r m in a t io n b it s p e r e a c h R S c o d e w o r d &
p a d d in g b it s t o c o m p le t e a s y m b o l p e r e a c h F E C b lo c k
f ix e d le n g t h
f ix e d le n g t h
f ix e d le n g t h
v a r ia b le le n g t h
R S c o d e w o rd
R S c o d e w o rd
R S c o d e w o rd
Last
R S c o d e w o rd
M AC
PDU 1
M AC
PDU 2
M AC
PDU 3
M AC
PDU 4
M AC
PDU 1
M AC
PDU 2
Remarks:
• ATM cells and DLC messages
are aligned to PDUs, IP packets
are segmented to PDUs
• PDUs are aligned to RS blocks
• Block structure preserved by
terminated convolutional coding
• Code blocks are aligned to
symbols and regions (DL) and
bursts (UL)
• Advantages:
error detection and ARQ
M AC
PDU N
w h e r e N = 1 ,2 ,3 ,4
Bernd Friedrichs, EG/FW-RSE
20
PHY Modes (4 of 9)
Maximum Range per Mode
Maximum d, PTx and pavailability are related as

I  NL free L rain L 0
 C 


P PTx  
 1 



N 
G TX G RX
 N  I  required 

>1
I is time-variant





p availabili ty
mainly dependent on
d , f c , B , p availabili ty ,  rain
fall rate
Lrain is time-variant
Stand-alone cells (without interference from adjacent cells, without DL ATPC)
Rain
fading
Clear
sky
Mode 4
Mode 3
Mode 2
Mode 1
Link loss
Cell radius
Bernd Friedrichs, EG/FW-RSE
21
Adaptive Operation
Adaptation according to
• d = distance (fixed)
• I = interference (slow in DL, fast in UL)
• N = noise (representing link budget C/N)
• Lrain = rain fading (fast, 20 dB/s)
Mechanisms
• PHY mode change per terminal
• PHY mode change per frame
• combined with ATPC (Adaptive Transmit Power Control)
Control loop
• decided centrally by AP
• based on
• measurement reports from AT
• received signal in AP
• commanded as
• announcement in DL map for DL,
• granted per UL map for UL
Bernd Friedrichs, EG/FW-RSE
22
Radio Link Model (6 of 8)
Free-Space Pathloss and Rain Fading
Lfree =
Pathloss
Lrain=Rain fading
Bernd Friedrichs, EG/FW-RSE
23
PHY Modes (5 of 9)
Throughput, Range vs. Availability @ 28 GHz
6.5 km
@ 99.9%
Clear sky
99 %
99.999 %
Bernd Friedrichs, EG/FW-RSE
99.99 %
99.9 %
24
F4
F1
F1
F4
F4
F1
F1
F 4F 4
F F1 4
F 1F 1
F4
F4
F1
F1
14
Interference in Downlink
and Uplink
14
F3
F2
F2
F3
F3
F2
F2
F 3F 3
F F2 3
F 2F 2
F3
F3
F2
F2
F3
F2
F2
F3
F3
F2
F2
F 3F 3
F F2 3
F 2F 2
F3
F3
F2
F2
F4
F1
F1
F4
F4
F1
F1
F 4F 4
FF14
F 1F 1
F4
F4
F1
F1
F4
F1
F1
F4
F4
F1
F1
F 4F 4
FF14
F 1F 1
F4
F4
F1
F1
F3
F2
F2
F3
F3
F2
F2
F 3F 3
F F2 3
F 2F 2
F3
F3
F2
F2
F3
F2
F2
F3
F3
F2
F2
F 3F 3
F F2 3
F 2F 2
F3
F3
F2
F2
F4
F1
F1
F4
F4
F1
F1
F 4F 4
FF14
F 1F 1
F4
F4
F1
F1
14
16
18
DL worst sector
UL worst sector
(C/I)min = 20*log(5) = 14.0 dB
Interference degradation typically depends on direction
• a sector may have poor properties for DL but good properties for UL
• interference is time-invariant for DL and time-variant for UL
Bernd Friedrichs, EG/FW-RSE
25
14
C/(N+I) Pattern for 5x5 Rectangular Constellation
(Downlink, ClearSky, ReUseFactor=4)
C /(N + I) p a tte rn @ B S d ista n ce = 4 km ; T X p o w e r = 2 1 .5 d B m ; ra in fa d in g = 0 d B /km
28
18
26
C /(N + I) p a tte rn @ B S d ista n ce = 4 km ; TX p o w e r = 2 1 .5 d B m ; ra in fa d in g = 0 d B /km
28
1 62 6
1 .8
1 .6
24
24
14
22
22
1 .2
20
12
D ista n ce [km ]
D is ta n c e [km ]
1 .4
1
0 .8
0 .6
20
18
1 01 6
18
14
8
0 .4
16
12
0 .2
61 0
0 .2
0 .4
14
worst sector enlarged
0 .6
0 .8
1
1 .2
D is ta n c e [km ]
1 .4
1 .6
1 .8
4
12
2
10
2
Bernd Friedrichs, EG/FW-RSE
4
6
8
10
12
D ista n ce [km ]
14
16
26
18
C/(N+I)~C/N Pattern for 5x5 Rectangular Constellation
(Downlink, RainFading, ReUseFactor=4)
D is ta nc e [km ]
C /(N + I) pa tte rn @ B S d ista n ce = 4 km ; T X p o w e r = 2 1 .5 d B m ; ra in fa d ing = 4 d B /km
18
26
16
24
14
22
12
20
10
18
8
16
14
6
12
4
10
2
8
2
4
6
8
10
12
14
16
18
D is ta nc e [km ]
Bernd Friedrichs, EG/FW-RSE
27
CDFs for 5x5 Rectangular Constellation
(Downlink, ClearSky, ReUseFactor=4)
Bernd Friedrichs, EG/FW-RSE
28
Marconi’s Radio Network Planning Tool
(Realistic Constellation with 142 Sectors)
Input:
Base station sites
Coverage
Traffic load
Output: Sectorization
Carrier frequencies (2)
Polarization (coloured)
Interference critical zone = 1.4% of coverage (blue)
Bernd Friedrichs, EG/FW-RSE
29
Detailed Layer Structure
ATM cells
(53byte)
CL
Cell-based CL
Security
control
DLC
IP packets
(variable length)
Radio
link
control
Initialization
control
Packet-based CL
51byte DLC SDU
(fixed length)
Connection
control
Traffic data connections
MAC management connections
ASN1 coding
ARQ sublayer (UL)
SAR sublayer
MAC sublayer
54...55 byte PDU
PHY
Encryption
Scrambling
Reed-Solomon Encoding
Convolutional Encoding
Modulation
Decryption
Descrambling
Reed-Solomon Decoding
Convolutional Decoding
Demodulation
Radio channel
(above 11 GHz)
Bernd Friedrichs, EG/FW-RSE
30
Realization of high Multiplex Gain requires
efficient and fast Bandwidth Allocation Schemes
Frequency planning (Blocking of PHY modes)
AT 1
Downlink
scheduler
(for carrier)
CAC
Uplink
scheduler
(for carrier)
CAC = connection admission control
Downlink allocation
(central in AP)
via DL map
(no action from AT)
Bernd Friedrichs, EG/FW-RSE
Uplink
scheduler
(use of grants)
...
AP
AT n
Uplink
scheduler
(use of grants)
Uplink allocation
(distributed, mainly in AP)
Requests per connection aggregate
(various mechanisms)
Grants per terminal via UL map
31
Example of ASN.1 Base Specification
PhyModeSetDescriptor
::= SEQUENCE {
psdi
Psdi,
downlinkPhyThresholdsList
PhyThresholdsList,
uplinkPowerModChangeListNonTc UplinkPowerModChangeList,
uplinkPowerModChangeListTc
UplinkPowerModChangeList
}
-----
Psdi ::= INTEGER {phyModeSet1 (1), phyModeSet2 (2)} (0..15)
-- 4 bit
PhyThresholdsList
4 bit
variable
variable
variable
::= SEQUENCE (SIZE(2..7)) OF PhyThresholdPair
UplinkPowerModChangeList ::= SEQUENCE (SIZE(1..6)) OF UplinkPowerModChangePair
PhyThresholdPair
upThreshold
downThreshold
}
::= SEQUENCE {
CnrThreshold,
CnrThreshold
UplinkPowerModChangePair ::= SEQUENCE {
upPowerModChange
UplinkPowerModChange,
downPowerModChange
UplinkPowerModChange
}
CnrThreshold
-- channel quality increase
-- channel quality decrease
-- channel quality increase
-- channel quality decrease
::= INTEGER(0..255) -- 8 bit,granu=0.25dB,range=[4,40]dB,absolute
UplinkPowerModChange
Bernd Friedrichs, EG/FW-RSE
::= INTEGER(0..32)
-- 6 bit,granu=0.5dB, range=[ -8, +8]dB
32
BRAN HiperMAN (1 of 2)
Overview
Main applications
 First release: FWA below 11 GHz
 Residential (self installation), SOHO, SME (wireless DSL)
 Mesh radio networks (radio based routers)
Features (100% selected by WiMAX Forum)
 Optimized for IP traffic, full QoS support
 Both FDD and TDD, including H-FDD CPE
 High spectral efficiency and data rates, up to 25 Mbit/s in 7 MHz
 Adaptive modulation (from QPSK to 64-QAM)
 Interoperability profiles for 1.75 MHz, 3.5 MHz and 7 MHz
 Uplink OFDMA (high cell radius possible, up to 50 km in PMP with
directive antenna)
 Hooks for advanced antenna systems
 High security TEK encryption algorithms
Bernd Friedrichs, EG/FW-RSE
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BRAN HiperMAN (2 of 2)
Technical Specifications
Standards (published in 2004)
 ETSI TS 102 177 PHY layer
 ETSI TS 102 178 DLC layer
 ETSI TS 102 210 System profiles
Functional Requirements
 ETSI TR 101 856
System Reference Documents
 ETSI TR 102 079 for the band 5.725 GHz to 5.875 GHz
Drafting activity
 MIBs for Network Management
 Test standards (PICS, TSS&TP finished in 2004, ATS)
 Support for nomadic systems
 etc.
Bernd Friedrichs, EG/FW-RSE
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BRAN RCWG
Regulatory Competence Working Group
5 GHz Harmonized EN (RLAN)
 To be used for European type approval in < 5.725 GHz
 ETSI EN 301 893 v1.2.3 - 5 GHz high performance RLAN;
Harmonized EN covering essential requirements of article 3.2 of
the R&TTE Directive
5.8 GHz Harmonized EN (FWA)
 To be used for European type approval in 5.725 - 5.975 GHz
System Reference Document (HiperMAN)
 Fixed - nomadic convergence of BWA systems
 To be used by ECC for more spectrum allocation
Bernd Friedrichs, EG/FW-RSE
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BRAN Relationship with Other Bodies and Forums
ETSI OCG
ETSI TM4
ETSI ERM
Bernd Friedrichs, EG/FW-RSE
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Relation BRAN - ITU
Draft ITU-R Recommendation on Radio Interface Specifications
(Requirements and Standards)
 BRAN and IEEE 802.16 provide harmonized inputs
ITU-D Report on Broadband Technologies (ITU-D Q20/2)
 BRAN provided input
ITU-APT Seminar on BWA (Busan, Korea, Sept. 2004)
 Presentations from BRAN Vice-Chair
Bernd Friedrichs, EG/FW-RSE
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Relation BRAN - IEEE802.x (1 of 4)
Overview
IEEE 802
ETSI BRAN
Remark
802.11a
HiperLAN2
same PHY layer
WiFi
H2GF
802.16
(10-66 GHz)
HiperAccess
802.16
(<11 GHz)
HiperMAN
WLAN
promotion:
WMAN
promotion:
(16e mobile extension)
(fixed or nomadic
operation)
WiMAX Forum
WPAN
802.15
currently
no activities
MBWA
802.20
mobile extension for
HM tbd.
Roaming
802.21
currently
no activities
Bernd Friedrichs, EG/FW-RSE
same PHY layer
(except one FEC detail),
further harmonization intended
(TC layer, protocol stack)
Base spec: HM harmonized
with IEEE
Test spec: Norm. ref. in IEEE
to HM PICS and TSS&TP
formal co-operation
agreement expected soon
38
Relation BRAN - IEEE802.16 (2 of 4)
Mutual Influence HiperMAN - IEEE sub11GHz
Source: Mariana Goldhamer, ITU-APT Seminar on BWA, Busan, Korea, Sept. 2004
Bernd Friedrichs, EG/FW-RSE
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Relation BRAN - IEEE802.16 (3 of 4)
Coding Scheme
ETSI BRAN
HiperAccess
IEEE 802.16
WirelessMAN-SC
Why different
FEC schemes?
Same FEC scheme
ETSI BRAN
HiperMAN
Bernd Friedrichs, EG/FW-RSE
IEEE 802.16
WirelessMAN-OFDM
40
Relation BRAN - IEEE802.16 (4 of 4)
MAC Layer
ETSI BRAN
HiperAccess
MAC optimized
for backhauling
ETSI BRAN
HiperMAN
Bernd Friedrichs, EG/FW-RSE
IEEE 802.16
WirelessMAN-SC
Same generic MAC layer
IEEE 802.16
WirelessMAN-OFDM
41
Co-operation ETSI - WiMAX (1 of 3)
The Agreement
ETSI and WiMAX Forum have a common interest

to perform and promote standardization with the aim of a global
information infrastructure

in avoiding duplication of technical work
ETSI and WiMAX Forum co-operate for testing and certification

to develop conformance test specifications

to validate the test suite
Status of Agreement

Details of agreement almost agreed (some legal issues to be fixed)

Signature expected soon

Technical experts are already working on this basis since mid 2004
Bernd Friedrichs, EG/FW-RSE
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Co-operation ETSI - WiMAX (2 of 3)
Details
WiMAX Forum
 set up the certification scheme to assure interoperability of devices
 control all aspects of certification
ETSI
 is harmonizing and developing HiperMAN test specifications
(PICS, TSS&TP, ATS) that could be used for certification
 offers unique resouces
– TC MTS (Methods for Testing and Specification)
– ETSI PTCC (Protocol and Testing Competence Center)
– ETSI Plugtest Service
has proven expertise in testing matters and
has proven track record of working with industry fora like WiMAX
Conformance and interoperability testing
 Both complement each other
 For best probability of interoperability between products - do both!

Bernd Friedrichs, EG/FW-RSE
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Co-operation ETSI - WiMAX (3 of 3)
Conformance Testing Process (ISO 9646 Scheme)
Product
Test System
testing
Implementation
Under Test
logging and
analysis
Executable
Test Suite
Test
Report
(e.g., C++)
Industry
implementation
validation
compilation
Base
Standard
Req.
checklist
Test
Purposes
Test Suite
(Test Cases)
(or Profile)
PICS
TSS & TP
ATS
Continuous interaction between all partners is essential for the process
(WiMAX, BRAN, PTCC, STF, test house, test tool vendors, manufacturers)
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Conclusions
Wireless industry needs global standards
ETSI BRAN supports all harmonization efforts with other
parallel standardization bodies
Co-operation BRAN - IEEE 802.16 shows
 what can be achieved
 how standard bodies can contribute to each other
Co-operation BRAN - WiMAX Forum
 Important signal to the market
 ETSI benefits from WiMAX marketing and certification
strength
 WiMAX Forum benefits from ETSI experience and work
approach
ETSI has access to regulatory bodies
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For more information ...
• http://portal.etsi.org/bran
(ETSI portal)
• http://www.etsi.org/ptcc
(ETSI PTCC and testing issues)
• [email protected]
(BRAN Chairman)
Bernd Friedrichs, EG/FW-RSE
46
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Evaluating the Benefits of Using HiperAccess as a