1. November 18
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: Device Technology for WNAN
Date Submitted: July 2008
Source: Dietmar Eggert, Atmel Corporation
Voice: [ ],
Re:
Abstract: Discussion of Device Technology Options for WNAN
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

2. WNAN Design Challenges/Considerations
November 18
WNAN Design Challenges/Considerations
Interoperability, Co-existence, Co-location with existing WPAN, WLAN, WMAN, WWAN
Worldwide Deployment, Multi-Band, Multi-Mode
Robustness, Coverage, Outage Probability
Range, Link Budget, Sensitivity, TX Output Power …
Implementation complexity, Degree of Integration
Power Consumption,
Slide 2
Page 2

3. …based on proprietary implementations ...
November 18
And …
…based on proprietary implementations ...
Slide 3
Page 3

4. Characterization of Large Markets Many End-Users
November 18
Characterization of Large Markets
Many End-Users
Many Network Deployments
Multiple OEM’s seeking
assurance of supply
low cost
Multiple Solutions Providers
Multiple Silicon Suppliers
Standard assuring Interoperability & Coexistence
Joint efforts to:
stabilize a solution
enable the market potential
build a business network
Slide 4
Page 4

5. Many Network Deployments Multiple OEM’s seeking
November 18
Situation as of today
Many End-Users
Many Network Deployments
Multiple OEM’s seeking
assurance/stability of supply
low cost
Multiple Solutions Provider
Multiple Silicon Supplier
Standard assuring Interoperability & Coexistence
Joint efforts to:
stabilize a solution
enable the market potential
build a business network
Slide 5
Page 5

6. Interoperability, Co-existence, Co-location
November 18
Interoperability, Co-existence, Co-location
Standardization within IEEE
Co-existence Scenarios (WMAN, WLAN, WPAN, WAN)
Frequency/Channel Hopping, DSSS
CSMA-CA, LBT
Frequency Agility, AFA
Co-location
Frequency Allocation
Reference Clocks and Harmonics
Sharing of Access (Frequency, Time, Code)
Slide 6
Page 6

7. Non-Licensed 2.4GHz ISM – Global Availability
November 18
Worldwide Deployment
Multi-Band Solutions
Non-Licensed 2.4GHz ISM – Global Availability
Non-Licensed Sub-1GHz ISM
US/EU/China/Japan
Multi-Mode Solutions
DSSS and/or Frequency Hopping
BPSK, O-QPSK, GFSK, GMSK, …, OFDM
Narrow-band, Wide-band …
Slide 7
Page 7

8. Robustness, Coverage, Outage Probability Channel Scenarios
November 18
Robustness, Coverage, Outage Probability
Channel Scenarios
Noise or multipath limited
Interference limited
Coverage
TX Power Control
RX Sensitivity Control
Antenna Diversity
Outage Probability/Link Availability
Long frames vs. short frames
Narrow band vs. wider band
Low data rate vs. moderate data rate
Slide 8
Page 8

9. Operating Space of WPAN and WLAN Standards

10. Effect of Proprietary Features
Proprietary Implementations

11. Operating Space of WNAN Standards relative to WPAN & WLAN

12. Technology available in 15.4 market today
November 18
Technology available in 15.4 market today
Support for 2.4GHz and Sub-1GHz ISM bands
Output Power up to +30dBm with external PA’s
Receiver Sensitivities up to -110dBm
Antenna diversity
High-data rates up to 2MBps
Fast settling synthesizer enabling Channel Hopping
Narrow and moderate bandwidth transceiver implementations
Highly stable reference clock sources at affordable cost
Scalable microcontrollers to run the protocol stacks and applications
Slide 12
Page 12

13. Range/Coverage – longer/better
November 18
Consensus on Objectives to support large networks ~ nodes
Range/Coverage – longer/better
Robustness - improved
Non-licensed spectrum- ISM bands
Low channel bandwidth - ~100 … 250kHz
Latency tolerant - seconds
Scalable & larger packet size
Low cost
Slide 13
Page 13

14. ….. need an accepted standard!
November 18
But …
….. need an accepted standard!
Slide 14
Page 14