Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs)

1. Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TG3 Multiple PHY BOF] Date Submitted: [16Jan01] Source: [John Barr] Company [Motorola] Address [1750 E. Golf Road, Schuamburg, IL 60173] Voice:[+1 847 576-8706], FAX: [+1 847 538-4253], E-Mail:[John.Barr@Motorola.com] Re: [01005R3P802-15_TG3-Jan01-Meeting-Objective-and-Agenda.xls] Abstract: [TG3 Multiple PHY BOF Slides] Purpose: [TG3 Multiple PHY BOF Session Overview and Notes.] Notice: This document has been prepared to assist the IEEE 802.15. 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 802.15. John Barr, Motorola

2. 802.15 IEEE 802.15 Working Group for Wireless Personal Area Networks Multiple PHY BOF January 2001, Monterey, CA USA John Barr, Motorola

3. Agenda • IEEE 802.15.3 PAR • Current MAC and PHY • Potential for additional PHYs • Direction John Barr, Motorola

4. IEEE 802.15.3 PAR • Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for High Rate Wireless Personal Area Networks (WPAN) • … wireless connectivity with fixed, portable and moving devices within or entering a Personal Operating Space (POS) (up to 10 meters in all directions enveloping a person) • … interoperability or coexistence with other 802.15 TG • … coexistence with other wireless devices in conjunction with Coexistence Task Groups such as 802.15.2 • … low complexity, low cost, low power • … >20Mbps to satisfy a set of consumer multi-media industry needs for WPAN communications. John Barr, Motorola

5. 802.15.3 MAC Characteristics • Proven support for mobile wireless personal area networks (WPAN) • Enables WPANs to interact with wired infrastructure access points • Enables a WPAN to temporarily separate into two subnets and then recombine via an efficient re-authentication and re-association procedure • Provides proven protocol support for efficient power management policies • Redundant master coordinators • Repeater service • Virtual data streams (asynchronous/isochronous) • Negotiating QoS parameters in a WPAN environment • Dynamic channel selection and/or migration • Adaptive FEC and selective retransmission ARQs • An efficient Slot Cycle TDMA algorithm for accessing the RF medium • Bounded latencies • Support for negotiating channel bandwidth allocations John Barr, Motorola

6. Contention Access Period Contention Free Period Beacon Asynchronous slots Isochronous slots MAC Protocol Superframe • Maintain station synchronization • coordinate sleep cycles • FH coordination (if necessary) • Asynchronous slot/cycle assignments • Isochronous slot/cycle assignments John Barr, Motorola

7. MAC Protocol Superframe:Contention Access Period Contention Access Period Contention Free Period Beacon Asynchronous slots Isochronous slots • All control messages such as: • attachment requests • authentication responses • slot cycle requests • In addition short data frames could be sent in this period John Barr, Motorola

8. 802.15.3 PHY Selection • 2.4 GHz using 802.11 channels • Base mode of 22Mbps uncoded • Higher order codes could allow 33,44,55 Mbps John Barr, Motorola

9. 802.15.3 PAR Allows for Multiple PHYs • Proposals submitted 802.15.3 included: • 5GHz direct FM • 5GHz OFDM • UWB • Majority of 802.15.3 participants favored 2.4 GHz solution • Significant minority supported non-2.4 GHz John Barr, Motorola

10. Rationale • Industry demand for a simple QoS solution for broadband multi-media distribution • 802.11a and HyperLAN/2 will need to change to satisfy the consumer electronics industry • Why not use the 802.15.3 MAC? John Barr, Motorola

11. Comments/Interest? • 802.11 is one precedence for multiple phys • Users will want compatible solutions • Lots of work on MAC, don’t preclude other PHYs • PHY independent MAC interface, may not need to do PHY • 2.4 solution simplifies radio decision, don’t cloud the market • Push our agenda in the 5GHSG • Keep spectral options open • 802.11a PHY not necessarily a good option John Barr, Motorola