Submission Title: [IEEE 802.15.5 WPAN Mesh – Technical Discussion] May, 2007 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [IEEE 802.15.5 WPAN Mesh – Technical Discussion] Date Submitted: [May 14, 2007] Source: [Chunhui Zhu] Company [Samsung] Address [75 W Plumeria Dr. San Jose, CA 95134] Voice:[408-544-5667], FAX: [408-544-5666], E-Mail: [c.zhu@samsung.com] Re: [] Abstract: [This is for the discussion on 802.15.5 low rate WPAN mesh.] Purpose: [for discussion and reference] Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15. Chunhui Zhu / Samsung

Low Rate WPAN Mesh Discussion May, 2007 Low Rate WPAN Mesh Discussion Chunhui (Allan) Zhu May 14th, 2007 Samsung Electronics Chunhui Zhu / Samsung

Outline Reference model Using link quality as routing matrix May, 2007 Outline Reference model Using link quality as routing matrix IEEE 802.15.4-2006 (4b) Impact New Feature Development MIB attributes – range and default value Chunhui Zhu / Samsung

May, 2007 The 15.5 LR Reference Model So far we agree to insert the mesh sub-layer between the SSCS and the MAC and keep the interface between the SSCS and the mesh identical to the interface between Mesh and the MAC. The good thing for this approach is to allow applications developed for the 15.4/4b to work with 15.5 without modifying the applications. In other words, the same primitives are used for both one-hop and multi-hop transmissions. The bad thing is it has already caused confusions to the implementers. Suggestion: Seek expert opinions from 802.15 working group. Chunhui Zhu / Samsung

Using link quality as routing matrix May, 2007 Using link quality as routing matrix A 4-bit field is used to describe link cost (16 levels) It is currently used only for selecting a reliable parent to join; only those with link cost <7 is eligible for being chosen as a parent. It is not used for routing. when link quality is used for routing it will generate some impact on the spec, i.e. the routing criteria will be different. Action item: Determine the change to the routing algorithm when link quality is used as routing matrix. Chunhui Zhu / Samsung

May, 2007 IEEE 802.15.4-2006 (4b) Impact We need 4b spec to check out the new PHY channels and the multicast support. For example, 4b uses the 5 MSBs to indicate channel pages (0,1,2) to support PSSS (10 channel) and O-OPSK (10 channel) in 915 MHz band. Do we need to reflect this change? If not, we can’t claim we support 4b. Action Item: If possible, please ask 4b people for a 15.4-2006 spec. What I have is D2 which is obsolete. Chunhui Zhu / Samsung

New Feature Development May, 2007 New Feature Development Portability/Mobility ETRI and CUNY? Low Power Mesh/End Device ETRI? Action item: Check the status. Chunhui Zhu / Samsung

MIB attributes – range and default value May, 2007 MIB attributes – range and default value MIB attributes need to have data range and default values For some of them I can only guess the value. If someone have better idea on the proper values please feedback to us. Action item: Feedback data range and default values. Chunhui Zhu / Samsung