The Need for Managed IEEE 802.11 Devices

1. The Need for Managed IEEE 802.11 Devices Harry Worstell AT&T Research hworstell@att.com Martin Lefkowitz Trapeze Networks Lefko@trpz.com Kazuyuki Sakoda Sony Serke@wcs.sony.co.jp Sudheer Matta Trapeze Networks matta@trpz.com Zhun Zhong Philips Zhun.zhong@philips.com Tim Olson Cisco Tolson@cisco.com J Kim AT&T Research Macsbug@att.com Harry Worstell, AT&T et al

2. Outline of presentation • 802.11: Indoor Wireless LAN Migration • 802.11: WLAN History • Study Group Purpose Statement • Expected topics for remotely managed dot 11 devices • How will the dot 11 devices get managed • Questions and Discussion • Straw Poll Harry Worstell, AT&T et al

3. 802.11: WLAN History • 1940: Spread spectrum technology first used by the military • 1980: Limited applications using narrowband technology • 1989: FCC assigns frequency for commercial use. • ISM bands authorized (900 MHz, 2.4 GHz, 5 GHz) • 1990: 900 MHz products begin shipping • IEEE begins work on industry standard • 1994: 2.4 GHz products begin shipping • 1997: IEEE 802.11 standard approved. • 2.4 GHz products begin dominating the scene • 1998: FCC authorizes the UNII Band • 1999: IEEE 802.11a&b standard ratified. • WECA formed for interoperability testing • Wide Band Frequency Hopping NPRM Released by FCC • “Enhanced MAC - QoS and Security” Task Group chartered • 2001 QoS/Security enhancements Task Groups begin • 2003 FCC expands the UNII band by 200MHz (12 channels) Harry Worstell, AT&T et al

4. 802.11: WLAN History (cont.) • Early 1980’s- began selling vertical market narrowband solutions geared to the retail and manufacturing industries. • 1985- FCC authorizes the ISM bands for WLAN, then assigns a frequency for commercial use in 1990. • 1990, NCR (now Lucent/Avaya) and others penetrate the horizontal markets with 900MHz products, but many factors prevented market penetration. • Cost (low quantities) • Speed (1-2 Mbps) • PC Integration: Awkward antenna’s and products • Market acceptance of the technology • 2000- LANs with QoS support become an industry focus due to growth of multimedia, streaming, VoIP, and home networking of broadband cable/DSL services • 2003 – Extension of wired managed services to wired and wireless managed service in enterprise (large and medium scale), hot spot, campus markets grow due to market penetration of wireless devices, high cost of IT personnel and poor economy. Harry Worstell, AT&T et al

5. A A Second-Generation Wireless LANs • InterNet/IntraNet • Ethernet-Compatible Speeds • Multiple RF Bands to operate Third-Generation Wireless Communications • TDMA • EDGE • Wideband CDMA 802.11: Indoor Wireless LAN Migration IEEE 802.11 Fourth-Generation of Wireless Communications First Generation Wireless LANs • Peer/Peer and Client/Server • Small User Population • Isolated "Cells" and User Groups • Non-Contiguous Coverage • Indoor Operation • Limited Mobility • Mostly Asynchronous Traffic • Slower than Ethernet • Larger User Population • Managed Services • Full Roaming/Handoff Capability • Contiguous Coverage in Dense Areas • Wider Area Coverage for Community LANs • Mobility (Follow-Me Service) • Mix of Async and Isochronous Traffic • Higher System Utilization • Enhanced Security Merge of 3G and 4G services (WLAN & WAN) Harry Worstell, AT&T et al

6. A A Second-Generation Wireless LANs • InterNet/IntraNet • Ethernet-Compatible Speeds • Multiple RF Bands to operate Third-Generation Wireless Communications • TDMA • EDGE • Wideband CDMA 802.11: Indoor Wireless LAN Migration IEEE 802.11 Fourth-Generation of Wireless Communications First Generation Wireless LANs • Peer/Peer and Client/Server • Small User Population • Isolated "Cells" and User Groups • Non-Contiguous Coverage • Indoor Operation • Limited Mobility • Mostly Asynchronous Traffic • Slower than Ethernet • Larger User Population • Managed Services • Full Roaming/Handoff Capability • Contiguous Coverage in Dense Areas • Wider Area Coverage for Community LANs • Mobility (Follow-Me Service) • Mix of Async and Isochronous Traffic • Higher System Utilization • Enhanced Security Merge of 3G and 4G services (WLAN & WAN) Harry Worstell, AT&T et al

7. Study Group Purpose Statement The proposed Study Group will evaluate the need to enable external network management entities (managed service providers, company IT personnel, hot spot providers, applications developers, etc.) to extend the management of the wired networks through to the wireless extension attached to those networks. Once evaluated, it is expected that a PAR and a 5 Criteria document will be written and submitted to the IEEE 802.11 Working Group so that a Task Group can be formed. This is a logical extension to the work now underway in Task Group “k”. Harry Worstell, AT&T et al

8. Process of Managed 802.11 devices in the Standards (Small steps to make good progress) Inter-Access Port Protocol Inter-Communications between APs (Now a Standard) Radio Resource Measurements Ability to obtain MAC and PHY measurements by Upper Layers (Now a Task Group) Enable external entities to manage Devices (APs and Clients) (Proposed Next Logical Step) Remote Managed Device Harry Worstell, AT&T et al

9. Expected topics for remotely managed dot 11 devices • Channel (frequency – APs & clients) • Reset the Devices Remotely • Antenna Selection • Load Balancing • Access to Client Power Control • Rogue Handling • Service Handling • Enable mechanisms already in dot 11 to outside entities (TGh) • Client Roaming • Dynamic Adaptation of clients/AP • Enable Interference Mitigation • All of the above with some way to do security Harry Worstell, AT&T et al

10. How will the dot 11 devices get managed • MIB • Application (OID’s) • Over the air to client devices • (by Management Action Frames) • Others? Harry Worstell, AT&T et al

11. Questions and Discussion Harry Worstell, AT&T et al

12. Straw Poll Would you support forming a study group to evaluate the need to enable external network management entities extend the managed services of the wired networks through to the wireless devices attached to those networks, which is a logical extension of the measurement work now underway in TGk? Yes No Abstain Harry Worstell, AT&T et al