1. Jul 2011
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Comparison of Responses to Task Group j Call for Proposals]
Date Submitted: [11 May 2011]
Source: [Ray Krasinski] Company [Philips]
Address [345 Scarborough Road, Briarcliff Manor, NY, USA]
Voice:[ ],
Re: Comparison of TG 4j Call for Proposals responses
Abstract: An overview of the areas of agreement between responses to the TG4j CFP and areas in need of further discussion.
Purpose: To outline the points of agreement and differences between the TG4j CFP responses to help drive discussion of the proposals and help move towards consensus.
Notice: This document has been prepared to assist the IEEE P 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 P
Ray Krasinski, Philips

2. Comparison of Responses to 802.15.4j Call for Proposals
Jul 2011
Comparison of Responses to j Call for Proposals
Ray Krasinski, Philips

3. doc.: IEEE 802.15-<doc#>
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doc.: IEEE <doc#>
Jul 2011
Content
TG4j RFP Response Requirements
Term Comparison
PHY Areas of Agreement
PHY Areas in Need of Further Discussion
MAC Areas of Agreement
MAC Areas in Need of Further Discussion
Ray Krasinski, Philips
<author>, <company>

4. TG 4j Technical Requirements 15-11-0064
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Jul 2011
TG 4j Technical Requirements
Compliance with:
FCC MBANS Rules
Part 95 Subpart M – Medical Body Areas Network Service (device control)
Amendments to technical requirements covering transmit frequencies, emissions, transmit powers etc
TG4j PAR and 5 Criteria
Physical Layer
Compliant to the existing DSSS PHY employing O-QPSK, operating in the 2450 MHz band
MAC Layer
Only additional MAC requirements to support the Physical Layer: To be defined
Ray Krasinski, Philips
<author>, <company>

5. Jul 2011
Terms
TG4j Term
IEEE
FCC MBANS
Device
Device (RFD or FFD)
Node
Hub
Coordinator (FFD)
Master Transmitter
PAN Coordinator
PAN Coordinator (FFD)
<none>
Control Point
Band Coordinator
- A healthcare facility may have multiple PAN Coordinators but is expected to have only one Control Point.
- The Band Coordinator is an independent entity, selected by the FCC, to manage the MBANS band. See , slide 6 for a detailed definition of the Band Coordinator
Ray Krasinski, Philips

6. Comparison of Proposals - PHY
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doc.: IEEE <doc#>
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Comparison of Proposals - PHY
Ray Krasinski, Philips
<author>, <company>

7. Areas of Agreement - PHY
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doc.: IEEE <doc#>
Jul 2011
Areas of Agreement - PHY
Use of MHZ DSSS PHY
5 Mhz channel spacing
16-ary based OQPSK Modulation
32 I and Q chips for 250kbps
Ray Krasinski, Philips
<author>, <company>

8. Areas in Need of Further Discussion - PHY
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doc.: IEEE <doc#>
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Areas in Need of Further Discussion - PHY
Channelization Plan
Forward Error Code
Block Interleave
Ray Krasinski, Philips
<author>, <company>

9. LG-Philips Channelization Proposal
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doc.: IEEE <doc#>
Jul 2011
LG-Philips Channelization Proposal
AMT spectrum
Guard bands
15.4j channels
Amateur radio spectrum
2360.5
2360 MHz
2400
MHz
2390 MHz
2400 MHz
0 (2363)
1 (2368)
2 (2373)
3 (2378)
4 (2383)
5 (2388)
6 (2393)
14 (2395)
7 (2367)
8(2372)
9 (2377)
10 (2382)
11 (2387)
12 (2392)
13 (2397)
For in-hospital deployment
15 channels defined to promote coexistence with AMT
Non-overlapping channels will be used in entire MHz band
For out-of-hospital deployment
Overlapping channels in 2390–2400 MHz band offers flexibility to avoid interference
Low deployment density and low duty cycle will assist MBANS coexistence
Ray Krasinski, Philips
<author>, <company>

10. Samsung Channelization Proposal
Jul 2011
Samsung Channelization Proposal
5 MHz channel spacing
2 sets of overlapping bands with an offset of 2 MHz
7 channels in each set (2395 MHz channel used in both sets)
One set selected
Different preambles for different sets
5 MHz
Center Frequencies
First set (MHz)
Second set (MHz)
2363
2365
2368
2370
2373
2375
2378
2380
2383
2385
2388
2390
2395
Ray Krasinski, Philips

11. Forward Error Correction (FEC) Code
Jul 2011
Forward Error Correction (FEC) Code
Description: Add forward error correction codes to decrease transmission errors
Proposed Changes to :
Systematic hamming codes (15,11)
Optional decoder at receiver
Ray Krasinski, Philips

12. Jul 2011
Block Interleave
Description: Interleave blocks to decrease burst errors
Proposed Changes to :
Interleaving in 60 bits blocks
4 blocks of 15 bits will be interleaved into 4 different blocks
Ray Krasinski, Philips

13. Comparison of Proposals - MAC
Jul 2011
Comparison of Proposals - MAC
Ray Krasinski, Philips

14. Areas of Agreement - MAC
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Areas of Agreement - MAC
Need for addition of PHY Information Base (PIB) attribute
Ray Krasinski, Philips
<author>, <company>

15. Areas in Need of Further Discussion -MAC
Jul 2011
Areas in Need of Further Discussion -MAC
Multi-Periodic GTS
Mutual Broadcast Periods
Easy Pairing
Unslotted & Slotted CSMA-CA at Nonbeacon-enabled PAN
Service Based Discovery
Coordinator Switching
Channel Switch Notification
Congestion Avoidance
Ray Krasinski, Philips

16. Jul 2011
Multi-Periodic GTS
Description: Increase efficiency of GTS in 15.4 by allowing for periodic GTS.
Proposed Changes to :
Add octet to the GTS Characteristics field (in GTS request command frame) to define multi-periodic GTS parameter
3 bits used to define the GTS period (5 bits are reserved)
The GTS period that is assigned to a node is P = 2N where N is the value defined by the 3 bits
GTS Specification field (in Beacon frame): Use reserved bit 6 as a multi-periodic GTS permit
GTS List field (in Beacon frame): Redefine the GTS Length field to indicate when the first periodic GTS is available
Ray Krasinski, Philips

17. Jul 2011
Easy Pairing
Description: Method of pairing a Device to a Hub in a convenient manner. A portable device is used as a carrier for pairing information
Proposed Changes to :
3 new commands:
Grant Association Proxy Authority
Association Proxy Request
Association Proxy Response
Ray Krasinski, Philips

18. Mutual Broadcast Periods
Jul 2011
Mutual Broadcast Periods
Description: Enhanced channel access method to minimize back-offs. Provide contention balancing.
Proposed Changes to :
Additional period using CSMA-CA for mutual broadcasting among devices
CSMA-CA with shorter back-off slot length
3 different types of CAPs
Exclusive CAP
Normal CAP
Background CAP
Ray Krasinski, Philips

19. Unslotted & Slotted CSMA-CA at Nonbeacon-enabled PAN
Jul 2011
Unslotted & Slotted CSMA-CA at Nonbeacon-enabled PAN
Description: Synchronized channel access mechanism at Nonbeacon-enabled PAN
Proposed Changes to :
Pulse-Coupled Oscillator synchronization needed at MAC layer
Ray Krasinski, Philips

20. Service Based Discovery
Jul 2011
Service Based Discovery
Description: If there are multiple PAN Coordinators, a method for a device selecting a PAN Coordinator based on its service type
Proposed Changes to :
Service ID added to Beacon Frame (2 bit)
Ray Krasinski, Philips

21. Coordinator Switching
Jul 2011
Coordinator Switching
Description: Proactive method to establish a connection to a new Hub if the connection to the Hub is lost. Active method to check quality of connection or PAN ID conflict and request change.
Proposed Changes to :
Active: Change information (channel number, PAN ID, etc) is broadcasted in beacon frame with realignment command when switch needed
Proactive: Setting priority of selected replacement Hubs in the device and transmitting the priority to the selected replacement Hub
Ray Krasinski, Philips

22. Channel Switch Notification
Jul 2011
Channel Switch Notification
Description: A channel switch command with time and channel information.
Proposed Changes to :
A new channel switch notification command
Plus an additional MAC primitive
Octets: variable 1 2 6
0/1
MHR fields
Command Frame Identifier
Coordinator Short Address
Timestamp
Channel Number
Channel Page
Ray Krasinski, Philips

23. Jul 2011
Congestion Avoidance
Description: A method of avoiding congestion at a relay Hub by broadcasting a response signal comprising congestion-related information from the Hub with respect to data transmitted to the Hub and using this information to better avoid congestion
Proposed Changes to :
Add congestion related information
Ray Krasinski, Philips