1. Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Proposals for adding a frame version number and for the treatment of reserved bits/fields]
Date Submitted: [18 Jan 2005]
Source: [Monique Bourgeois Brown] Company [Motorola, Inc.]
Address [1150 Kifer Road, Sunnyvale, CA 95131, USA]
Voice:[ ],
Re:
Abstract: [Proposals for adding a frame version number and for the treatment of reserved bits/fields]
Purpose: [To differentiate between current and future versions of x and promote backwards compatibility from 15.4b onwards.]
Notice: This document has been prepared to assist the IEEE 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
Monique Brown, Motorola, Inc.

2. Origin
These slides came out of discussions on the MAC editing team calls.
Monique Brown, Motorola, Inc.

3. Reserved bits All reserved bits shall be set to 0 upon transmission.
Reserved bits shall be evaluated upon receipt (not ignored).
If a 4b device receives a frame with one or more nonzero reserved bits, the frame shall be discarded with no indication to the higher layer.
Monique Brown, Motorola, Inc.

4. This slide intentionally left blank.
Monique Brown, Motorola, Inc.

5. Reserved values
If a 4b device receives a frame having a field with a reserved value, the frame shall be discarded with no indication to the higher layer.
Monique Brown, Motorola, Inc.

6. Frame control field of MAC header
Frame version field
Bits: 0-2 3 4 5 6
7-9
10-11
12-13
14-15
Frame type
Security enabled
Frame pending
ACK request
Intra PAN
reserved
Dest addr mode
Frame version
Source addr mode
Frame control field of MAC header
Use reserved bits of the frame control field to indicate the frame version.
Let frame version 002 = 15.4 and frame version 012 = 15.4b; frame versions are reserved for future use.
Monique Brown, Motorola, Inc.