Session #60 802.16 NRR Committee Closing Report

IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number:

IEEE 80216-09/0019Date Submitted:

2009-03-12Source:

Arnaud Tonnerre Voice: +33 1 46 13 28 50 THALES E-mail: arnaud.tonnerre@fr.thalesgroup.com146 boulevard de Valmy92704 Colombes, France

Venue:IEEE 802.16 Session #60

Base Contribution:N/A

Purpose:For review

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Session #60

NRRWorking Group Ad Hoc Committee

Closing Report

March 12, 2009

NRR WG Ad Hoc Committee

• A call for interest has been issued at the closing plenary during the November meeting in Dallas– http://ieee802.org/16/docs/08/C80216-08_028.ppt

• The 802.16 Working Group has approved the creation of a WG Ad Hoc Committee with the objective of promoting discussion on robustness and reliability

• A Committee reflector has been created:– http://dot16nrr-reflector.wirelessman.org

• A dedicated folder is available in the Member’s upload area:– http://dot16nrr.wirelessman.org

Motivations: Broadband LMR

• Land Mobile Radio (LMR or PMR)– Systems used by first responders, companies,

public works organizations, transportation, etc.– Highly-reliable technologies but low-rate data services– Significant needs for Broadband services

• LMR evolution to Broadband– Short/mid-term:

• “Limited” increase of data capacity (TEDS in TETRA)• Complementary use of LMR systems and Broadband technologies

– Long-term: Convergence between Broadband and LMR technologies

• TETRA Association see 802.16 as a potential candidate for Broadband LMR– 802.16 is a good basis to build such a Broadband solution– Nevertheless 802.16 would require enhancements in security, reliability,

resilience and group management [3] [4] [5]

Motivations: Public Safety

• Related usage models– Public Safety Wireless Networks– Disaster usage models– Surveillance or critical infrastructure, border surveillance

• Major requirement: not infrastructure dependent– Expressed in the SAFECOM’s Statement of Requirements for wireless

communications (US Department of Homeland Security) [1]

– Temporary absence of infrastructure• The infrastructure is damaged or not available• Systems shall allow continued operation in the absence of infrastructure

– Non-constructive situation• There is no established infrastructure• Temporary network creation

Motivation: Aviation

• Aviation use cases for deterministic and robust systems – General

• Suitable COTS hardware that is amenable to aviation application • Aviation has stringent performance requirements than most systems designs

– Airport Surface Operations (ASO)• 802.16 has been recommended

by the FAA and Eurocontrol• ASO requires high-reliability for

safety critical data transmission

– Airplane communications• wireless link may replace a large number of cables

(e.g. engine monitors and systems controls) • Requirements: real-time, high-bandwidth, high-reliability

Requirements

802.16 limitations

No efficient subscriber multicast capability exists in 802.16 today

No mode exists in 802.16 that permits such type of communication

In 802.16, the Base Station is a Single-Point-Of-Failure

Priority bandwidth request is not provided

No specific support for Mobile BS

Security may require some enhancements (to be confirmed)

802.16 limitations

No efficient subscriber multicast capability exists in 802.16 today

No mode exists in 802.16 that permits such type of communication

In 802.16, the Base Station is a Single-Point-Of-Failure

Priority bandwidth request is not provided

No specific support for Mobile BS

Security may require some enhancements (to be confirmed)

Usage models requirements

Efficient broadcast/multicast of voice and data to groups of individual

Need for direct communication without the presence of existing infrastructure (SAFECOM SoR for Public Safety [1])

If an infrastructure is damaged (a BS or RS fails) the network shall continue to operate (SAFECOM SoR for Public Safety [1])

Very low end-to-end delays and call set up times are required for Public Safety and Aviation usage models

The identified usage models require Mobile Base Station capability

Very high security requirements when critical data are transmitted and human lives are involved

Usage models requirements

Efficient broadcast/multicast of voice and data to groups of individual

Need for direct communication without the presence of existing infrastructure (SAFECOM SoR for Public Safety [1])

If an infrastructure is damaged (a BS or RS fails) the network shall continue to operate (SAFECOM SoR for Public Safety [1])

Very low end-to-end delays and call set up times are required for Public Safety and Aviation usage models

The identified usage models require Mobile Base Station capability

Very high security requirements when critical data are transmitted and human lives are involved

Proposed Scope

• The scope has been discussed this week – Identification of the studies to be carried out in the Committee– Association with a priority level (1 or 2)

• Proposed scope– Enhanced relay operation: Level 1– Direct communication mode: Level 1– Priority bandwidth request: Level 1– Non-standard channel behaviors: Level 1– Enhanced security: Level 2– Dynamic reconfigurability Level 2

(role reversal between stations)

– Mobile BS: Level 2– Group management: Level 2

Context

• Main differences between 802.16m and NRR– Primary focus of 802.16m is to “meet the cellular layer requirements

of IMT-Advanced next generation mobile networks” (TGm PAR)– NRR primary focus is professional and government applications

– 802.16m leads to cost-driven and spectrum efficient solutions– NRR interest is to increase the reliability of the air interface and to

address non-cellular needs

– The 802.16m standard is intended to be a candidate for consideration in the IMT-Advanced evaluation process

– NRR intends to address non IMT-Advanced applications

Context

• Status of 802.16m– The project must follow a strict timeline in relation to

the ITU planning – The consideration of additional requirements and

features for non-cellular applications would be inappropriate (time and resource consuming)

• Status of NRR– The activity is in its early stage– The Committee needs to define clearly the usage models,

requirements and potential solutions– NRR cannot meet the ITU schedule

Context

• NRR Committee proposed approach– It seems to be inappropriate to propose NRR requirements to 802.16m

• Primary applications/usage models are clearly different

• Consideration of those requirements may impact the 802.16m planning

• ITU planning is too tight for development of NRR features

– Keep a separate activity • Finish the work for providing recommendations to the Working Group

– Work closely with TGm (establish a liaison)

Activities of the week

• 2 sessions have been planned during the week– Wednesday morning (9:10 – 12:05pm)– Wednesday afternoon (1:30 – 3:45pm)

• Results– Attendees : up to 14– Represented companies: Thales, LinQuest, EADS,

France Telecom, Boeing, Mitsubishi, Nokia, BAE Systems, …

– 10 presentations have been provided

Activities of the week

• Review of NRR overview contribution (C80216nrr-09_011)

• Presentations related to usage models– Aviation usage models (Frank Whetten – Boeing)– Usage models needing local forwarding (Yi-Hsueh Tsai – III)– Surveillance and disaster applications (Arthur Wang – LinQuest)– Reconfigurable backhauling (Djamal Meddour – France Telecom)– Surveillance scenario (DJ Shyy – MITRE)

• Presentation related to the requirements– Resilience and reliability (Arthur Wang – LinQuest)– Spectrum issues (Ranga Reddy – US Army)– Mobile BS and enhanced relay (DJ Shyy – MITRE)

Proposed following activities

• The Committee has identified significant interests from equipment manufacturers, government organisations and operators

• Continue the work as a separate activity– May work closely with TGm

• Proposed activities in-between session #60 and #61– Discussion on the reflector and one conference call

Reference

[1] SAFECOM program, “Statement of Requirements for public safety wireless communications and interoperability”, April 2004

[2] “LMR evolution to Broadband”, C80216-08/002, Arnaud Tonnerre (THALES), December 2008

[3] “TETRA and WiMAX: Complementary or competing ?”, Marco Morresi, Enrico Donnini (Selex), www.tetramou.com

[4] “The market positionning of TETRA”, Devdarsh Jain (Artevea Digital Limited), www.tetramou.com

[5] “WiMAX, what is it and what can it offer to the mission critical business case ?”, Pierre Force (EADS), TETRA Association members Workshop, 4 November 2008

[6] Dr. M. Nouri, Chairman of ETSI TC-TETRA WG4 (High Speed Data), “Broadband wide-coverage, emergency mobile communication”, ICWMMN, October 2008, Beijing, China