1. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 1 Next Generation WLAN Standard Pratik Mehta

2. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 2 Introduction Market Progression Backwards Compatibility Desired features Conclusions

3. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 3 WLAN Market Progression WLAN 802.11b 802.11g 802.11a 802.11-NG 54Mbps at 5GHz 54Mbps at 2.4GHz 11Mbps Next generation 100-400Mbps? Dual-Band 2005+200420032002Past Next-Gen standard done … the cycle repeats 11b/g/a as primary WLAN connection 11g standard done Dual-band, Multi-mode adoption ramp 11b/g/a 11b as primary WLAN connection First 11a showing Industry awaits dual- band 11b and 11a standards done First WLAN Ramp 11b only The start of something good

4. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 4 Market Progression - Recommendation Adoption of next generation technology expected in 2005/6 –Product cycles are 2-3 years apart Take the opportunity to get the right features and performance in the next- generation WLAN standard and products

5. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 5 Based on IDC and In-Stat data Sept. 2000 20 40 60 80 100 1990 19911992 1993 19941995 1996 19971998199920002001200220032004 Mu shipped per year 10Mbps10/100Mbps10/100/1000Mbps10Gbps Example: Ethernet Products Cycle

6. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 6 Backward Compatibility Systems strongly desire backward compatibility Market success built on adding improvements rather than replacing with something brand new However, backward compatibility can … … limit the achievable improvement levels … result in higher complexity for a given benefit level We need to resolve this conflict smoothly

7. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 7 Backward Compatibility Precedents StandardsSystems 802.11Multiple PHY – 11b, 11g, 11a Dual-band / Multi-mode products fulfill the desire for compatibility In 11g, the standard did it 802.3Multiple PHYMulti-mode products as well as standard fulfill compatibility 802.15Multiple MAC and PHY No product history as yet

8. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 8 Backward Compatibility- Recommendation Products must (and will) provide backward compatibility –Example: Dual-Band, Multi-mode products The standard does not have to address backward compatibility –Prioritize higher improvement levels over maintaining backward compatibility Performance and Features with lesser complexity –Standard should not preclude backward compatibility

9. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 9 Product Attributes Needed Higher throughput – 100Mbps as baseline Longer range along with the increased throughput –Move the throughput-range curve to the right and up Lower latency and jitter for real-time applications Efficient spectrum usage is important Exploit the learning in industry to achieve capacity gains (more advanced adaptive channel allocation, multi-user detection, adaptive antennas/beam switching, adaptive channel coding)

10. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 10 Product Attributes Needed Coexistence across technologies (not just 802) Management and Security “IP everywhere” is the right prime directive Wi-Fi certified

11. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 11 Summary There is no rush to get a new standard out Backward compatibility is important but can be achieved in many ways … be open Focus on getting the right feature set and performance levels Scope should include minimum goals up front

12. doc.: IEEE 802.11-02-682r0 Submission November 2002 Pratik Mehta Slide 12 References Usage scenarios and features work done in IAG, 5GSG (IEEE+BRAN) Presentation to WNG-SC by Pratik Mehta and Amer Hassan