doc.: IEEE 802.22-11/68r0

Submission

June 2011

Xin Zhang, NICTSlide 1

Review of 802.16 & Comparison with 802.22 Smart Grid and Critical Infrastructure Monitoring

IEEE P802.22 Wireless RANs Date: 2011-06-13

Name Company Address Phone email

Zhang Xin NICT 20 Science Park Road, #01-09A/10 TeleTech Park, Singapore

+65 67711008 zhangxin@nict.com.sg,

Chang-woo Pyo NICT 3-4 Hikarion-Oka, Yokosuka, Japan cwpyo@ieee.org

Chunyi Song NICT 3-4 Hikarion-Oka, Yokosuka, Japan songe@ieee.org

M. Azizur Rahman NICT 3-4 Hikarion-Oka, Yokosuka, Japan aziz.jp@ieee.org

Hiroshi Harada NICT 3-4 Hikarion-Oka, Yokosuka, Japan harada@ieee.org

Authors:

Notice: This document has been prepared to assist IEEE 802.22. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.

Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.22.

Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures http://standards.ieee.org/guides/bylaws/sb-bylaws.pdf including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair Wendong Hu as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.22 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at patcom@iee.org.

doc.: IEEE 802.22-11/68r0

Submission

June 2011

Xin Zhang, NICTSlide 2

Abstract

• This document provides an overview of 802.16 standards on PAR, 5C, usage models and technical aspects, which may have some relevance with 802.22 Smart Grid and Critical Infrastructure Monitoring Study Group.

• Also, this document provides comparison between 802.16 and 802.22 for smart grid and critical infrastructure monitoring.

doc.: IEEE 802.22-11/68r0

Submission

Title

802.16n (Task Group)

IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Broadband Wireless Access System Amendment: Great Reliability In Degraded Metropolitan Area Network (GRIDMAN)

802.16p(Task Group)

IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Broadband Wireless Access System Amendment – Machine to Machine Communication

June 2011

Xin Zhang, NICTSlide 3

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Submission

PAR Scope

June 2011

Xin Zhang, NICTSlide 4

802.16n

This amendment specifies protocol enhancements to the IEEE 802.16 MAC for enabling increased robustness and alternate radio path establishment in degraded network conditions. Limited OFDMA PHY extensions are included for enabling operation with radio path redundancy and direct communication between subscriber stations. Also mobile base stations and mobile relay stations are supported. Operation in licensed, unlicensed and lightly licensed spectrum bands below 6 GHz with means and mechanisms to coexist with other radio access technologies (RATs) is supported. Support for enabling application specific specialized security suites is also provided.

802.16p

This amendment specifies IEEE Std 802.16 medium access control (MAC) enhancements and minimal OFDMA PHY modifications to provide functionalities for efficient Machine to Machine communication. The enhancements are lower power consumption at the subscriber station, support by the base station of significantly larger numbers of devices, and efficient support for small burst transmissions. This amendment provides continuing support for WirelessMAN-Advanced Air Interface (802.16m) and legacy WirelessMAN-OFDMA equipment.

This standard is based on 802.16m

Definition of Machine to Machine Communication:  This is information exchange between Subscriber stations or between a Subscriber station and a Server in the core network through a Base Station that may be carried out without any human interaction.

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Submission

5C and Functional Requirement

802.16n 802.16p

Distinct Identity -Aims to provide great reliability and increased robustness.(Robustness: The capability of the network to withstand and automatically recover from degradation to provide the required availability to support mission critical applications (essential to the core function of society and the economy). E.g. the ability to recover from a single point of failure)

-Support multi-mode operation-Support standalone network-Support multi-hop relaying-Support source and sink of data at Relay station-Support MS-Ms direct communication-Support path discovery and management-Support heavy uplink data services-Enhanced unicast and multicast services-Support mobile base station

-Machine to Machine communication- Low power consumption at the subscriber station- Handling a very large number of devices- Small burst transmission

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Xin Zhang, NICTSlide 5

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Submission

Usage Models

June 2011

Xin Zhang, NICTSlide 6

802.16n 802.16p 802.22 New SG

Security and public safety •Public Safety, •Avionics, •Airport Surface Communication, •Maritime Safety,•Surveillance applications

Support communication with high reliability in Smart Grid application

Device Monitoring• Smart metering• Automated services on consumer devices• retail digital signage management

Transportation & Asset tracking• Tracking• Vehicular Telematics

Security & Safety & Health Care• Secured access and surveillance• Public safety sensors• Healthcare monitoring of bio-sensors• Remote maintenance and control

(a) Regional Area Smart Grid/Metering:support Low Complexity CPEs

(b) Critical Infrastructure/Hazard Monitoring: Support very large number of monitoring CPEs

(c) Smart Traffic Management and CommunicationReal time monitoring, low latency

(d) Emergency Temporary Broadband Infrastructure :Ad hoc connecting among portable CPEs

(e) Remote Medical Service: Support remote medical service with high QoS in a rural residence area

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Summary – Review, Differences and Similarities

June 2011

Xin Zhang, NICTSlide 7

802.16n 802.16p 802.22 New SG

1 Amendment MAC Amendment, limited PHY

MAC Amendment, limited PHY PHY and MAC Amendment

2 Operating Frequency

licensed, unlicensed and lightly licensed spectrum bands below 6 GHz

• licensed band•RF frequencies less than 6 GHz

TVWS frequency

3 Operating bandwidth

•Scalable bandwidths from 5 to 40 MHz•Single or multiple RF carrier

• Scalable bandwidths from 5 to 40 MHz• Single or multiple RF carrier

6,7 or 8 MHz

4 Coverage WMAN (several of km) WMAN (several of km) WRAN (Several tens of Km, 20~30Km)

5 Transmission Power

Low power consumption at the subscriber station

• Fixed high power (4W) in US, Portable/Mobile Power (100mW, 40mW) in US.• Base station (500W) in Canada, user terminal (4W) in Canada.

6 Transmission Rate

High data rate Support efficient transmission of small burst sizes

From several kbps (one stream) to several Mbps (multi-streams)

7 Network topology

• Tree topology• Support Multi-hop relay

• Tree topology• point-to-point• point-to-multipoint

• Infrastructure Mode,• Point-to-Multipoints,• Support peer-to-peer connection

8 Available Devices

More than 1000 devices More than 512

9 Coexistence 16 Does not apply 11af, 15 4TV coexistence

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Summary - Technical Comparison802.16 (802.16-2009) 802.22 (802.22D3-

redline)Comment on the comparison from the perspective of 802.22 New SG

Frequency range Below 11 GHz for licensed band 54-862 MHz for unused TV channel

TVWS band andcompliances to regulation for its usage are the key differences

Multiple Access OFDMA, OFDM, SC OFDMA Single PHY mode reduces the complexity.

FFT size 2048 1024 512 256 128 2048 Single FFT mode allows simpler implementation.

.22 has higher data throughput for comparable bandwidth

Bandwidth(MHz) 20 10 5 2.5 1.25 6 7 8

Maximum Data Throughput (Mbit/s)

40 20 10 5 2.5 22.69

Subcarrier frequency spacing (KHz)

11 3.3 3.9 4.5 .22 has advantage in combating frequency selective fading

Cyclic Prefix Duration

11.4 μsec Up to 75 μsec •.22 is more robust to spread delay. • It is optimized to support long range

Subcarrier Mapping

2-dimentional Linear Simpler implementation

June 2011

Xin Zhang, NICTSlide 8

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Submission

Conclusion

• Comparing to 802.16, uniqueness of 802.22 New SG – is able to provide services related to smart grid application for a larger coverage

area.

– is able to provide services related to smart grid application in TV whitespace.

– is able to meet the requirement of TVWS operation such as Database access.

– is able to provide enhanced robustness in dealing with delay spread as well as frequency selective fading, this is good for long range communication.

– is able to provide inexpensive implementation due to single FFT mode and linear sub-channel assignment.

June 2011

Xin Zhang, NICTSlide 9

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Submission

References

• 802.16p PAR

• 802.16n PAR

• 802.16m PAR

June 2011

Xin Zhang, NICTSlide 10

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Submission

Appendix (1/3)

June 2011

Xin Zhang, NICTSlide 11

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Submission

Appendix (2/3)

802.16m(Completed)

•IEEE standard for Local and Metropolitan area networks - Part 16: Air Interface for Broadband Wireless Access System Amendment - Advance Air Interface

802.16j(Completed)

•IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Broadband Wireless Access System Amendment – Multihop Relay Specification

June 2011

Xin Zhang, NICTSlide 12

• Title

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Submission

Appendix (3/3)

• PAR Scope

June 2011

Xin Zhang, NICTSlide 13

802.16m

This standard amends the IEEE 802.16 WirelessMAN-OFDMA specification to provide anadvanced air interface for operation in licensed bands. It meets the cellular layer requirements of IMT-Advanced next generation mobile networks. This amendment provides continuing support for legacy WirelessMAN-OFDMA equipment.

The purpose of this standard is to provide performance improvements necessary to support future advanced services and applications, such as those described by the ITU in Report ITU-R M.2072.