Transcript GSC17-GRSC10-04

Document No:
GSC17-GRSC10-04
Source:
ARIB
Contact:
Homare Murakami (NICT), [email protected]
GSC Session:
GRSC10
Agenda Item:
4.3
Researches and standardization activities
on systems using white space
Homare Murakami
ARIB (NICT)
Jeju, 13 – 16 May 2013
Standards for Shared ICT
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Highlight of Current Activities (1)
• First applications are start to be
operated on TV white space in
Japan
– Area broadcasting-type
systems
Systems / Applic
ations
Available
from
Primary
Terrestrial TV broa
dcasting
-
High-level
Specified Radio M
icrophones
Apr. 2013
(expecte
d)
Lower-lev
el
Area Broadcasting
-type Systems
Apr. 2012
Sensor network
(Long-ter
m study it
ems)
Seco
ndary
• Other applications are studied
at working group of white space
promotion committee organized
by Ministry of Internal Affairs
and Communications (MIC)
• There are two categories within
secondary systems
• An organization will be
established to coordinate the
usage of white space
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Category
Communication sy
stem for disaster r
elief
Wireless broadba
nd system
2
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Highlight of Current Activities (2)
• Standardization of RRS/systems using white space are on going in
several organizations
• NICT contributes to these activities
Organization / Group
Scope
Administrations
ITU-WP1B
Consideration of radio regulation on Cognitive radio system (CRS)
(study period of CRS is done on Feb. 2012)
ITU-WP5A
Technical studies of Cognitive radio system (CRS)
APG
Making APG’s (Asian’s) proposals to ITU
IEEE 802 committee
IEEE 802.11af
Standardization of white space WLAN
IEEE 802.15.4m
Standardization of white space SUN
IEEE 802.19.1
Standardization of coexistence methods for white space systems
IEEE 802.22b
Standardization of white space WRAN
IEEE DySPAN-SC
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IEEE 1900.4a
Standardization of cognitive radio networks (Published on Sept. 2011)
IEEE 1900.4.1
Standardization of cognitive radio networks
IEEE 1900.6
Standardization of spectrum sensing interfaces (Published on Apr. 2012)
IEEE 1900.6a
Standardization of spectrum sensing interfaces
IEEE 1900.7
Standardization of PHY/MAC specification for white space
3
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Strategic Direction
• Contribute to standardization activities in
several organizations in order to
harmonize them with Japanese conditions
(e.g. bands, bandwidth, power, and
applications)
• Accelerate the researches of white-space
systems to help to establish technical
specification in white space promotion
committee organized by MIC in Japan
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Challenges
• Apply the standards to different
specifications of terrestrial TV
broadcasting and policies in each
country
• Introduce automatic coordination
scheme to coexistence several WS
devices in the same band (e.g. WS
database and coexistence manager
approach)
– In Japan, coordination of white space
usage is currently done by hand
(licencing published by MIC, and
coordination activity by a new
organization)
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Coexistence
Discovery
and Information
Server
Another
Coexistence
Manager
TVWS Database
Coexistence
Manager
Coexistence
Enabler
Coexistence
Enabler
802.19.1
Scope
White space radio system
White space radio system
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Next Steps / Actions
• Continue to contribute to establishing /
improving standard documents in several
organizations (e.g. ITU, IEEE)
• Continue to research to develop coexisting
methods of several WS devices in the
same bands
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Supplementary Slides
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Cognitive radio technology
• Cognitive radio
Heterogeneous type cognitive radio
– is a radio or system that senses,
and is aware of, its operational
environment and can dynamically
and autonomously adjust its radio
operating parameters accordingly by
collaborating wireless and wired
networks
System A
By sensing frequency bands that systems have been
allocated on and time slots, users secure adequate
bandwidth by selecting existing systems.
– Heterogeneous type cognitive radio
– White space type cognitive radio
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System C
Freq.
• Two types of approaches
• Cognitive wireless cloud is the
concept to bring the two
approaches into a real
environment to improve spectrum
usage efficiency
System B
White space type cognitive radio
System A
System B
System C
Freq.
By sensing vacant frequency band and time slot, users
secure adequate bandwidth by bundling vacant freq. bands.
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Cognitive Wireless Clouds
Operator
Independent
Co-existing manager
Operator
Independent
spectrum manager
Operator
Independent
network manager
Operator
Dependent
network manager
Primary
Operator 1
Primary
operator 2
Secondary
Operator 1
Operator
Dependent
Network manager
Secondary
Operator 2
Heterogeneous type
cognitive base station
(CBS)
White space type
cognitive base station
(CBS)
Sensing and
connection
Wireless/Wired link
(A kind of adhoc network)
GSC-17, (a)
JejuHeterogeneous
/ Korea
type cognitive radio
Network based on
cognitive base station
Cognitive terminal (CT)
9
(b) White space type cognitive
radio
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Four types of utilization methods
Operator independent
spectrum/reconfiguration
/coexistence manager
Sensing available
RATs
Sensing vacant
frequency/timeslot
Sensing vacant
frequency/timeslot
Sensing available
RATs
Any access
technologies
can be applied
(a) Heterogeneous
type operated on
terminals
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(b) Heterogeneous
type operated on
base stations
Any access
technologies on
the vacant
freq./slot
(c) White space type
operated on base
stations
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Any access
technologies on
the vacant
freq./slot
(d) White space type
operated on terminals
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Network architecture and
management framework
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•
•
CWC architecture
–
–
NRMs control radio resource utilization
in cooperation with several managers
(TRMs, CBSRMs) and RANs
Standardizes as IEEE 1900.4/4a
TMC
RAN1
RRC
Control channel for cognitive radio
–
Design of out-of-band control channel
•
•
Used as the “radio enabler” of IEEE 1900.4
Several implementations are studied
–
–
Dedicated system, data-channel on terrestrial TV broadcasting, low-power transvers, etc.
Terminal specific control signal will be exchanges in In-band
logical channel
CPC基地局
Control
channel BS
OSM
Network Reconfiguration Manager (NRM)
ネットワーク再構築マネージャ
(NRM)
RMC
TRM
NRM
TRC
RANn
Another
NRM
Control
Cognitive Base
Stations (CBSs)
コグニティブ無線基地局(CBS)
channel BS
OPC基地局
Terminal
コグニティブ無線端末に
Out-of-band
制御情報を送受信する
control channel
専用の無線通信
Heterogeneous type cognitive radio system
ヘテロジニアス型コグニティブ無線システム
WS RAN
CBSMC
TRM
CBSRM
TRC
CBSRC
Another
TRM
ANT
ANT
RF
RF
RP
ANT
Cognitiveコグニティブ無線端末(CT)
Terminals (CTs)
RF
0.4-6GHz
Terminal
Control
CPC部
ch. part
Data
communication
データ通信
（アウトバンドパイロットチャネル）
TMC
Comm.
通信部
part
RP
Sensing
part
表示部，
アプリケーション部
センシング部
RP
Reconfigurable processor:
RP
Sensing
WSM
CBS
Another
CBSRM
Packet based network
Spectrum sharing type cognitive radio system
周波数共用型コグニティブ無線システム
CBS: Cognitive Base Station
CBSMC: CBS Measurement Collector
CBSRC: CBS Reconfiguration Controller
CBSRM: CBS Reconfiguration Manager
NRM: Network Reconfiguration Manager
OSM: Operator Spectrum Manager
RAN: Radio Access Network
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RMC: RAN Measurement Collector
RRC: RAN Reconfiguration Controller
TMC: Terminal Measurement Collector
TRC: Terminal Reconfiguration Controller
TRM: Terminal Reconfiguration Manager
WSM: White Space Manager
WS RAN: White Space RAN
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Terrestrial TV-type control
channel test facility
at NICT Yokosuka site
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Cognitive base stations (CBS)
•
Implementation of cognitive radio technology into
base stations/access points
–
Heterogeneous type CBS prototypes
•
White space type CBS first prototype
Advantages to terminals
•
•
–
•
Low-cost, low-power consumption and small size
Current existing terminals can be supported
Links can be aggregated by CBSs
Network policy / Measurement information
Internet
Network
reconfiguration Manager
RANs (e.g. LTE, 3G,
WiiMAX, Wi-Fi)
RAT devices Cognitive base station (CBS)
(USB dongle)
Wi-Fi
User terminals
supporting wi-fi access
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How to utilize the white space?
Any access technologies can be
applied at the white space but…
White space type cognitive radio
•Need to protect primary services
System A
System B
System C
– Sensing technology
– Database
Freq.
•Need to coexistence with
different access technologies
operated in the same band
WLAN
on whitespace
on whitespace
– Standards using white space
– Coexistence functions
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WPAN/
SUN
13
WMAN
WRAN
on whitespace
on whitespace
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White space database(1)
• Primary systems have to be
protected from secondary systems
– Secondary systems shall away from
separation distance, and can be
operated at outside of primary
systems’ protected contour
– Whitespace database gives detailed
information about primary systems
• Several white space standards are
discussed
– E.g. IEEE 802.11af(WLAN),
802.15.4m(SUN), 802.22(WRAN)
– Signals from devices of a standard
may interfere to that of other
standards
– “database for secondary systems”
are also required for coexistence of
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GSC-17, Jeju
/ Korea whitespace standards
multiple
Secondary system A
Primary system
Protected contour
Secondary system B
primary
system’s area
Calculation among users
on the same system
Whitespace
database
Calculation among users
on different systems
Whitespace
coexistence manager
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Multiple TV whitespace standards
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White space database(2)
Implement TV whitespace database
•Providing available channels in TV white space to
CBS by responding to its query
•Calculating interface between existing TV
broadcasting and the secondary systems, then
available channels at each CBS’s location are
derived
– Accessible via IETF PAWS (on HTTP)
interface
•Multiple calculation methods can be implemented
and be switched between them
– US FCC methods
•
Supporting FCC regulation (FCC 10-174, FCC
12-36)
– UK Ofcom methods
•
Supporting a document from Ofcom
(Implementing Geolocation (9 November 2010))
– Japanese methods
•
To be deployed (still discussing in technical
committee under MIC)
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WLAN system on white space(1)
•
OFDM
IEEE 802.11af
– 802.11 PHY and MAC
standard will be amended to
support TV white space band
Items
MIMO
Same as IEEE802.11 WLAN systems
Frequency
174-862 MHz
Service area size
100m-500m for personal portable
device and 5Km for fixed device
Number of
terminals per an
AP
Up to 512
Data late
From 1.5Mbps to 600Mbps（can be
changes）
Power
<=100mW for personal portable
device, <=1W for fixed device
Bandwidth
5/10/20/40MHz （can be changed）
802.11a/g
802.11y
802.11n/ac
802.11-2007
802.11u/z
802.11af
Scope of standardization on
802.11af
Geo-location Database
Primary system
Terrestrial TV broadcasts, wireless
GSC-17,
Jeju
/
Korea
for protection
microphone
TVWS Data base access
Standards
Value
Applications
Technolo
gies
Primary service protection
802.11 BSS
AP (mode II)
Internet
STAs(mode I)
Registered Location Secure Server
802.11 BSS
Geo-location Database
16
AP (mode II)
STAs(mode I)
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WLAN system on white space(2)
• The world’s first WiFi prototype
in TV white space based on the
IEEE 802.11af draft
specification
– Based on Draft 2.0
(released in Sept. 2012)
Item
Frequency
Channel bandwi
dth
Transmission po
wer
MCS
MAC
Antenna
gain
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Jeju / Korea
Value
470-710MHz
6MHz
20dBm
BPSK
IEEE 802.11af Draft
Specification (D 2.0
)
0dBi
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Hardware platform for TV white space
• 802.11af prototype using FPGA
– Supporting 802.11af (UHF band), 802.11b/g(2.4GHz band), and ISDB-T(UHF band)
Item
RF frequency
FPGA
Memory for FPGA
Interface
CPU
Specification
470M-770MHz, 1884.5M-1919.6MHz, 2210M2170MHz, 2400M-2497MHz, 2492.5M2692.5MHz, 5160M-5330MHz
SPARTAN-6（XC6SLX150-2FGG676C）x 2
SDRAM 512Mbit
PCI Express
Intel Core2Duo processor T7500(2.2GHz)
Memory for CPU
DDR2-667 Unbuffered SO-DIMM×2
Supported PHY
and MAC
IEEE 802.11a/b/g, IEEE 802.16e
Supported system
architecture
Sensing level
-120 dBm/8MHz (470M-770MHz)
(depends on the standards in other bands)
Linux
Size
FPGA board:125mm×95mm
CPU board:125mm×95mm
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/ Korea
Power
Chassis of HW
(SDR RF × 2 inside)
IEEE1900.4/4a/6
OS
I/O
802.11af hardware
(SDR RF × 1)
RF part
Ethernet (1000Base-T), USB *8, DSUB
DC13.8V
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SUN system on white space
• IEEE 802.15.4m – Smart Utility Network (SUN)
– Data collection from meters of electricity, gas and water using SUN and
SUN can covers dead zone
WAN technology
of WAN
Data
collection
server
SUN
(Smart Utility Network)
WAN
(Wide Area Network)
IP
Network
Signals on WAN
Low power consumption SUN
system with meters
•Efficient sleep function
•Efficient relay/ route selection
Service area
by existing service
Signmals on SUN
Extended service area by relay
transmission on SUN
•
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More coverage
by relay transmission
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•
•
Working 10 years without battery change
with 2-3 AAA battery
Distance: 100m+
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Construct mesh / tree topology
GSC17-GRSC10-04
Coexistence management architecture
• Accommodate multiple white space RATs
into a same band
Coexistence
Discovery
and Information
Server
– Standardization is on going at IEEE 802.19.1
Items
Description
Coexistence
method
Three logical entities defined in the standard
provides coexistence function among
different TVWS devices in cooperation with
TVWS database.
• Coexistence Manager (CM)
• Coexistence Enabler (CE)
• Coexistence Discovery and Information Ser
ver (CDIS)
Six logical interfaces (depicted in right figure)
is also defined.
•Interface A
•Interface B1
•Interface B2
•Interface B3
•Interface C
Another
Coexistence
Manager
TVWS Database
• Coexistence Information Service
CM provides information regarding
coexistence, e.g. Neighbor
list/types/operating channels, to TVBDs
Services
• Coexistence Management Service
CM controls TVBDs’ coexistence
behavier based on the information
GSC-17, Jeju / Korea gathered from TVBDs, TVWS database 20
and CDIS
Coexistence
Manager
Coexistence
Enabler
Coexistence
Enabler
802.19.1
Scope
White space radio system
White space radio system
Items
Description
Coexistence M
anager (CM)
• Make decision related to
coexistence
• Provides it to CEs
Coexistence E
nabler (CE)
• Retrieve information related coexiste
nce from TVBD
• Communication between CM and TV
BD, with translating the information f
ormat between CM and TVBD
Coexistence
Discovery and
Information
Server (CDIS)
• Provide coexistence related
information to CMs
• Helping a Standards
CM to find othe
CMs ICT
for Shared
• May connect to TVWS database
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Whitespace regulations is Japan
•
As of Apr. 2012, area broadcasting-type systems are start to be operated as
the first application on TV white space in Japan
– License can be issued for applicant if its condition qualifies technical criteria
•
Other applications are studied at
working group of white space
promotion committee organized by
Ministry of Internal Affairs and
Communications (MIC)
– “static” and “nomadic” usages
are candidates
• “mobile” usage is currently out of
scope in the group
•
radio microphone will be available as
2nd
application in 2013
– It has higher priority than area
broadcasting system, therefore
coexistence process has been
discussed
• Jeju
Other
applications
GSC-17,
/ Korea
are recognized as
21
long-term study items
Category
Systems / Applic
ations
Available
from
Primary
Terrestrial TV broa
dcasting
-
High-level
Specified Radio M
icrophones
2013 2Q
(expecte
d)
Lower-lev
el
Area Broadcasting
-type Systems
Apr. 2012
Sensor network
(Long-ter
m study it
ems)
Seco
ndary
Communication sy
stem for disaster r
elief
Wireless broadba
nd system
Standards for Shared ICT
GSC17-GRSC10-04
Our works in standardization bodies
Organization / Group
Scope
Positions / roles by NICT
Administrations
ITU-WP1B
Consideration of radio regulation on Cognitive radio system (CRS)
(study period of CRS is done on Feb. 2012)
ITU-WP5A
Technical studies of Cognitive radio system (CRS)
APG
Making APG’s (Asian’s) proposals to ITU
IEEE 802 committee
IEEE 802.11af
Standardization of white space WLAN
Vice chair, Secretary
IEEE 802.15.4m
Standardization of white space SUN
Vice chair, Technical editor, Secretory
IEEE 802.19.1
Standardization of coexistence methods for white space systems
Assistant technical editor
IEEE 802.22b
Standardization of white space WRAN
Chair, Secretary
IEEE DySPAN-SC
Chair
IEEE 1900.4a
Standardization of cognitive radio networks
(Published on Sept. 2011)
Vice chair, Secretary
IEEE 1900.4.1
Standardization of cognitive radio networks
Vice chair, Secretary
IEEE 1900.6
Standardization of spectrum sensing interfaces
(Published on Apr. 2012)
Secretary
IEEE 1900.6a
Standardization of spectrum sensing interfaces
Secretary, Technical editor
IEEE 1900.7
Standardization of PHY/MAC specification for white space
Chair
Wireless Innovation Forum
Alliance for software defined radio technology
Board member
Wi-Fi Alliance
Alliance for Wi-Fi standard
WRAN Alliance
Alliance for promotion of WRAN standard
22
Board member
WiSUN Alliance
Alliance for promotion of SUN standard
Board member
Alliances and promotion activities
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Standards for Shared ICT
GSC17-GRSC10-04
Thank you for your attention!
• A part of this presentation was conducted under a contract of R&D
for radio resource enhancement, organized by the Ministry of
Internal Affairs and Communications, Japan.
• Contact:
[email protected]
• Our latest activities and outcomes are available at
http://www2.nict.go.jp/wireless/smartlab/
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