Download ETSI Broadband Access including Fixed Wireless Access

GSC9/GRSC_010
SOURCE:
ETSI BRAN Chairman
TITLE:
ETSI Broadband Access including Fixed Wireless Access
AGENDA ITEM:
GRSC2 5,4 [HIS 4]
CONTACT:
Bernd Friedrichs, mailto:[email protected]
Broadband Access including
Fixed Wireless Access
ETSI BRAN Overview
2017-05-25
GSC-9, Seoul
1
ETSI BRAN Interoperable Standards
ETSI BRAN
(Broadband Radio Access Networks)
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
Regulatory Competence Group
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Testing
ETSI BRAN History
• HiperLAN2 (HL)
–
–
–
–
Initial considerations started 1997
PHY layer harmonization with IEEE802.11a in 1998
Base specs published in 2000
Fine-tuning of specs, testing and work on extensions ongoing
• HiperAccess (HA)
–
–
–
–
–
Initial considerations started 1998
Fundamental decisions (interoperable, architecture) in 1999
Base and test specs published in 2002
Fine-tuning of base and test specs ongoing, harmonization with 802.16
Harmonized Standard (HEN) expected for 2004
• HiperMAN (HM)
–
–
–
–
Initial considerations started 2001
Base specs published in second half of 2003
Test specs expected for 2004/2005
Extensions under discussion GSC-9, Seoul
ETSI BRAN Relationship
with Other Bodies and Forums
•
•
•
•
•
•
•
CEPT (European Conference of Postal and Telecomm. Admin.)
CITEL (Comision Interamericana de Telecomunicaciones)
ETSI ERM (EMC and Radio Spectrum Matters)
ETSI TM (Transmission and Multiplexing)
3GPP (3rd Generation Partnership Project)
H2GF (HiperLAN/2 Global Forum)
IEEE-SA (Institute of Electrical and Electronic Engineers Standards
Association), especially IEEE 802.16
• IETF (Internet Engineering Task Force)
• ITU-R (International Telecommunications Union - Radio Sector)
• WiMAX Forum (Worldwide Interoperability for Microwave Access)
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Global Wireless Standards
WAN
IEEE 802.16
WirelessMAN
IEEE 802.11
WirelessLAN
IEEE 802.15
Bluetooth
MAN
LAN
PAN
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3GPP, EDGE
(GSM)
HiperMAN &
HiperAccess
ETSI
BRAN
HiperLAN/2
ETSI BRAN and IEEE 802.16 Standards
above 11 GHz
ETSI BRAN
HiperAccess
(single carrier)
same PHY layer
further harmonization
IEEE 802.16
WirelessMAN-SC
same
„generic“
DLC layer
below 11 GHz
ETSI BRAN
HiperMAN
(OFDM)
same PHY layer
same DLC layer
different PICS,...
additional modes for IEEE
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IEEE 802.16
WirelessMAN-OFDM
Co-operation Agreement ETSI - WiMAX
• WiMAX (Worldwide Interoperability for Microwave Access) mission:
– Promotion of BWA systems (operating between 2.5 and 66 GHz)
– Certification of interoperability for products from multiple vendors
• ETSI and WiMAX 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 co-operate for profiling, testing and certificating of
– HiperMAN (and for further enhancements to HM)
– HiperAccess (if HA and WirelessMA-SC closer aligned)
• WiMAX will use with permission
– conformance test specifications developed by ETSI BRAN
– expertise of ETSI PTCC
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– ETSI PlugtestTM service for interoperability
events
Overview: HiperAccess and HiperMAN
•
•
•
Point-to-Multipoint (PMP) topology
Interoperability (testing is normative part of standard)
Standard allows for vendor-differentiated products, e.g.,
- management,
- core network interfaces,
- ARQ,
- broad range of cellular constellations
- security,
- bandwidth allocation strategies, ...
•
Spectrum efficient (both for IP and ATM core networks)
•
Dramatic improvements compared to 1G/proprietary systems
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Point-to-Multipoint (PMP) Architecture
Base station (AP) serves up to
256 terminals (AT) per sector,
using capacity sharing
methods (multiplex gain)
AP
AP connected to
public network
AT
SM E
custome r
AT
AT
SOHO
custome r
Node B
AT
Multidwelling
AT
Residenti al
custome r
ATs access to the core
network at high data
rates with high QoS
Other architectures:
- Point-to-Point (PTP)
- Multipoint-to-Multipoint (Mesh)
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Mobile
terminal
AT
HM or WLAN
base station
Interworking Approach
(shown for HiperAccess, similar for all BRAN systems)
Core
Network
Core
Network
Core
Network
Network Convergence sublayer (CL)
(IW
HiperAccess
DLC
HiperAccess
PHY
Core Networks:
ATM, IP, ISDN, PSTN,...
Removes differences
between core networks
Matched to the
requirements for
supporting ATM and IP
Ensure cost-effective
implementation and
spectral efficiency
DLC and PHY layers are independent of the core network
GSC-9, Seoul
HiperAccess
Main Characteristics
• Main applications:
– UMTS backhauling, SOHO, SME
– optimized for ATM and Ethernet
• ETSI BRAN developed protocol stack and radio specifications
• Supporters and interest from:
– Manufacturers: Alcatel, Ensemble, Ericsson, Marconi, Nokia, Siemens, etc.
– Operators: France Telecom, Omnitel Vodafone, Sonera, Telecom Italia,
Telekom Austria, Telenor, Telia, etc.
• Strong points
– Suitable for immediate deployment in 2G and 3G networks
– Technical quality
• Precision of specification
• Well controlled optional features
• Absence of ambiguities
• Test specifications with ETSI strength
2017-05-25
GSC-9, Seoul
11
HiperAccess Details (1 of 4)
Network Topology Model
AT
AP
(Access Terminal)
Node B
(Access Point )
AT 1
ca rrier
Node B
- one APT per carrier
- one APC per cell
- several sectors per cell
- several carriers per sector
- overlapping cells (separated
by frequency or polarization)
APT
AT n
Core
Network
APC
Node B
Node B
AT 1
ca rrier
AT m
se ctor
UNI
RNC
APT
AT
APT = Access Point Transceiver
APC = Access Point Con troller
geogra phica l
ce ll
AP
Sector
SNI
Air-Inte rfa ce
HiperAccess Sy stem
UMTS backhauling
(HA AT is co-located with node B, HA AP is connected
to RNC)
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Seoul
Cell with four sectors
HiperAccess Details (2 of 4)
Main Features of Physical 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
Downlink (AP  AT) Uplink (AT  AP)
Data rates (Mbit/s)
Important parameters
Transmit power
Range
20...120
20...80
(typically 80)
(typically 50)
15 dBm
14 dBm
up to 12 km
(hard limit from ranging, effectively
depending on availability and rain zone)
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HiperAccess Details (3 of 4)
Adaptive Coding and Modulation
Adaptation
• according to distance
• according to interference
• according to rain fading (20 dB/s)
• per terminal
• per frame
• combined with ATPC (Adaptive Transmit Power Control)
PHY mode defined by modulation and concatenated coding
Mode
Modulation
0 (CZ)
1
2
3
4
QPSK
QPSK
QPSK
16-QAM
64-QAM
Outer
Block
Code
RS(t=8)
RS(t=8)
RS(t=8)
RS(t=8)
RS(t=8)
Inner
Convolutional
Code
R=1/2
R=2/3
R=7/8
R=5/6
PHY mode set 1
Information
word
length
30 byte
1...4 PDU
1...4 PDU
1...4 PDU
1...4 PDU
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Spectral
efficiency
Required
C/(N+I)
from
~ 0.5 bit/s/Hz
to
~ 3.8 bit/s/Hz
7 dB
8 dB
12 dB
18 dB
25 dB
HiperAccess Details (4 of 4)
Main Features of DLC Layer
•
•
•
•
Frame based
– 1 ms frame duration
– Optional adaptive TDD mode (unpaired bands)
– Optional H-FDD terminals (paired bands, separated TX - RX)
– Optional ARQ
Fixed length PDUs
– Efficient support of ATM and IP, robust, high QoS, allows ARQ
QoS Classes
– Constant bit-rate,
– Real-time variable bit rate
– Non-real time variable bit rate
– Best effort
Resource allocation mechanisms
– Continuous grant, polling, piggybacking, random access
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HiperMAN
Main Characteristics
• Main applications
– SOHO, SME (wireless DSL)
– Mesh radio networks (radio based routers)
• Based on IEEE protocol stack (IEEE802.16)
– Profiling 802.16 to a narrower set of options
– Adding things that 802.16 is now embracing
• Strong points
– Developing in parallel with IEEE802.16
– Industry forum WIMAX that is backing IEEE802.16 but is
present in HiperMAN as well
– Test specifications with ETSI strength (ongoing)
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HiperMan Details (1 of 2)
• Broadband Fixed Wireless Access (FWA)
– 2-11 GHz
– up to 75 Mbit/s @ 20 MHz channelization
– FWA services to SMEs and residential users
• Interoperable standard
– Defines only one PHY mode: OFDM, FFT 256 points
• Main Features
– Using the basic MAC (DLC and CLs) of the IEEE 802.16-2001 standard as
base-line
– 12dB higher system gain in uplink, relative to 802.16a OFDM mode, to enable
low cost, residential deployment
– Selectable channel bandwidths between 1.25 and 20 MHz
– Non Line-of-Sight operation
– Advanced antenna systems support
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HiperMan Details (2 of 2)
•
Full QoS support (scheduled MAC)
•
Almost double protocol efficiency compared to 802.11a
•
Main focus is on IP traffic
•
Enables both PMP and Mesh network architectures
•
Supports both FDD and TDD frequency allocations
•
Close cooperation with IEEE 802.16
– HiperMan and the OFDM FFT256 subset of IEEE 802.16d-2004 standard
will interoperate
•
Future enhancements:
– License-exempt bands (5.8GHz, etc.)
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– SMNP Management
Conclusions for HiperAccess (and HiperMAN)
Requirement
Solution
Interoperability
A small number of well-controlled options,
ASN.1-based message encoding,
detailed test specifications.
Spectral efficiency
Adaptive modulation & coding,
adaptive power control.
High QoS
Centralized radio link control,
centralized scheduling,
robust messaging.
Low cost design
Large network-independent part
option for TDD, support of H-FDD.
Future proof
Several further options,
„hooks“ for future evolution,
phased roll-out: 1st ATM, 2nd IP
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