Slide%201%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20Philippe%20Rouzet,%20STM

1
Project IEEE P802.15 Working Group for Wireless
Personal Area Networks (WPANs) Submission
Title TG4a-TRDSelection-Criteria-doc-status-Ana
heim Date Submitted 11 May
2004 Source Philippe Rouzet, TG4a Technical
Editor, Company STMicroelectronics Address
STMicroelectronics, 39 Chemin du Champ des Filles
1228 Geneve Plan-les-Ouates, Switzerland Voice
41 22 929 58 66, FAX [phone],
E-Mailphilippe.rouzet_at_stm.com Re IEEE
P802.15.SG4a CFA Abstract TG4a is in the
process of drafting the Selection Criteria
Document for the requirements to be used in the
selection process for a PHY Draft Standard for
P802.15.4a and has nearly completed the Technical
Requirement Doc Purpose Status of the
current Selection Criteria Draft (May 2004
Anaheim IEEE session) and plan for the next
steps Notice This document has been prepared to
assist the IEEE P802.15. 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 acknowledges
and accepts that this contribution becomes the
property of IEEE and may be made publicly
available by P802.15.
2
SG4a ANAHEIMTechnical Requirement Doc
(TRD)Selection Criteria Doc (SCD)

• Status
• 2 docs available on the reflector (draft form)
• TRD rev 0 (of TG4a) 15-04-0198-00-004a-TG4a-techn
  ical-requirement.doc
• SCD rev 0 (of TG4a) 15-04-0232-00-004a-tg4a-alt-p
  hy-selection-criteria.doc

3
SG4a ANAHEIMTechnical Requirement Doc (TRD)

• Status
• Officially was discussed till conf call April
  28th,
• Then postponed to this session
• plan is to finish TRD during Anaheim session

4
SG4a ANAHEIMTechnical Requirement Doc (TRD)

• Main topics under discussion (1/3)
• a) omni directional antennas isotropic loss of 3
  dBs (Andy April 13th) (perhaps for SCD only)
• - discussion from Kai (April 13th)  replace
  omni-directional with non-directional 
•    ( 4 editorial remarks gt taken on board by
  TE)
•  
• b) spectral modification capability (Rick April
  13th)   ---gt text proposed
•    evocate TPC DFS
•    - discussion from Kai (April 13th) not on
  TRD, let to proponers (2 mails)
•    - discussion from Pat (April 13th) is
  cognitive radio approach adapted to TG4A ?
•    - discussion from Roberto (April 13th) OK
  for spectral modification as proposed but as one
  possible example
•    - discussion from Kai  (April 14th) current
  TRD is sufficient
•    - discussion from Rick (April 14th more
  required on regulation item, referring to FCC
  NPRM ET Docket 03-237
•    - discussion from Mat (April 14th FCC does
  not propose to add more constraints thus no needs
  to bring more in the TRD 
•    - discussion from Rick on Interference Noise
  Temperature (April 14th)

5
SG4a ANAHEIMTechnical Requirement Doc (TRD)

• Main topics under discussion (2/3) 
•   c) need to accept cases where there are TX
  only devices (Dan April 14th) --gt thus reject
  cognitive radio approach
•   - discussion from Bernd (April 14th) is TX
  only compliant with the PAR (id est with 15.4 MAC
  protocol?) 
•  
•   d) clarification required on effective data
  rate 1kbps normally and 1Mbps exceptional  (Dani
  April 14th) (concern about the capability to use
  process gain techniques, while keeping a
  aggregation capability of 1Mbps at a concentrator
  level).
•   - discussion from Stefan (April 14th). Add
  clarification to the TRD (implicitely stated
  data rate ave to be defined at MAC PHY I/f) gtTE
  comment agreed, will be put in TRD. Also needs
  for clarifications (process versus coding
  gain,link budget analysis required to compare
  signal energy (due to potentially different
  bandwidth or example). 
•    - discussion on effective data rate
  (continued) from Dani (April 14th) with
  precisions on Multiple Acess approaches (TDMA,
  CDMA, Freqency or Time Hopping) and impact on the
  process gain 

6
SG4a ANAHEIMTechnical Requirement Doc (TRD)

• Main topics under discussion (3/3) 
•    e) casual low probability of detection (LPD) 
  -Cognitive radio concept- (Rick Monday, 19 April)
  ---gt text proposed
•      - discussion from Berndt LPD must be
  optional  (April 19th)  - agree by Rick
•  
•     f) Scalability/flexibility to comply with
  low end AND high end applications  (Rick April
  14th)
•      - discussion on that this criteria is
  critical, but very challenging . necessity to
  solve this issue to get a successful std (Pat
  April 14th)

7
SG4a Anaheim Selection criteria doc (SCD) 1/4

• First session dealing with SCD started March
  17th.
• The group agreed to start using the structure of
  15.3a SCD (03031r9P802-15_TG3a-PHY-Selection-Crit
  eria.doc)
• Note in the next slides ref. to the SCD doc. are
  as follow 5.6.2

8
SG4a Anaheim Selection criteria doc 2/4

• Status
• Template prepared and distributed during
  Orlandos session.
• Gone through the whole content
• currently no big deviation seen as to the
  structure,
• but obviously many adaptations to SG4a to be
  made)
• TG4a group agrees that the document must be
  lighter
• (e.g. refer to existing 15.3a ref. docs for list
  of interferers/victims)

9
SG4a Anaheim Selection criteria doc 3/4

• Actions
• Technical Editor has worked on the generic parts
  of the doc and provided draft SCD rev 0 (worked
  till 5.2.1.1)
• Link established with the channel model group on
• Interference item do we take into account
  generic UWB interferer? 3.2.2.2
• Link budget (e.g. table) 5.6.2
• Antenna pattern to be used for the channel model
  (currently isotropic antenna in the SCD) 5.6.2

10
SG4a Anaheim Selection criteria doc 4/4

• Main items selected for discussions after Orlando
  (reflector and next conf call)
• Packet error rate (consider applications and 15.4
  frame format)
• 5.5.1
• Elaborate on scalability / Cognitive Radio
  (accuracy, capacity, data rate versus range)
  3.4
• Work on TX only capability. Is it desirable
  (appli- req.), compatible with the PAR (no
  significant deviations from the current 15.4 MAC)
  ?
• Work on data rate 5.2.1.1 suggested to
  consider 1Kb/s for RFD devices and up to 1 Mb/s
  for FFD 5.9
• Structure of the PHY header 5.2.2.1 (can we
  start as early as now?)