1. June 16, 2018
doc.: IEEE r0
January, 2005
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Group Address Support]
Date Submitted: [January 19, 2005]
Source: [René Struik] Company [Certicom Corp.]
Address [5520 Explorer Drive, 4th Floor, Mississauga, ON Canada L4W 5L1]
Voice:[+1 (905) ], FAX: [+1 (905) ],
Re: [IEEE documents: 02/474r2 (January 16, 2003, Slides 5-6), (July 23, 2003, Slides 4-6), (November 11, 2003, Slides 6-9)]
Abstract: [Suggestion for Group Addressing Support in IEEE b Low-Rate WPAN standard.]
Purpose: [Assist in improving the IEEE WPAN standard (Draft D18).]
Notice: This document has been prepared to assist the IEEE P 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 P
Rene Struik, Certicom Corp.
Rene Struik, Certicom Corp.

2. Group Addressing Proposal for Draft IEEE 802.15.4bWPAN Standard
January, 2005
Group Addressing Proposal for Draft IEEE bWPAN Standard
René Struik, Certicom Research
Rene Struik, Certicom Corp.

3. Group Addressing Support (1)
January, 2005
Group Addressing Support (1)
Destination Addressing fields:
<destination address> ::= <physical address> | <logical address>
Short destination addresses:
Ordinary destination addresses: 0x0000 – 0xFFEF (65,520=65, addresses)
Logical destination addresses: 0xFFF0 – 0xFFFF (16 group addresses)
Filtering incoming frames by device B:
Check on B’s long address;
Check on B’s (short address, PANId) combination
Check membership group:
Group addressing enabled iff DestAddr=0xFFFX;
Membership test succeeds iff B is member of ‘X’ group
Notes:
Group addressing ON/OFF decision does not require introduction of separate group addressing bit
Membership test: matching ‘X’  G (set of groups B is member of)
Set of logical destination addresses fixed (i.e., meaning centrally determined)
Rene Struik, Certicom Corp.

4. Group Addressing Support (2)
January, 2005
Group Addressing Support (2)
Destination Addressing fields:
<destination address> ::= <physical address> | <logical address>
{option indicated by 1-bit group addressing indicator}
Short destination addresses:
Ordinary destination addresses: 0x0000 – 0xFFFF (65,536 addresses)
Logical destination addresses: 0x0000 – 0xFFFF (65,536 group addresses)
Filtering incoming frames by device B:
Check on B’s long address;
Check on B’s (short address, PANId) combination
Check membership group:
Group addressing enabled if group addressing bit set;
Membership test succeeds iff B is member of DestAddr group
Notes:
Group addressing ON/OFF decision does require introduction of separate group addressing bit
Membership test: matching DestAddr  G (set of groups B is member of)
Set of logical destination addresses not fixed (i.e., meaning decentralized)
Rene Struik, Certicom Corp.

5. Group Addressing Support (3)
January, 2005
Group Addressing Support (3)
Motion 1:
Use one of the bits in the presently ( ) reserved fields in the Frame
Control Field in MAC Header as group addressing bit indicator (0: group addressing
OFF; 1: group addressing ON).
Proposal: take bit b7 of the FCF for this purpose (since this is on octet boundary, thus
leaving b8-b9 reserved).
Rene Struik, Certicom Corp.

6. Group Addressing Support (4)
January, 2005
Group Addressing Support (4)
Motion 2:
Structure logical destination address as follows:
Addressing fields:
<source address> ::= <physical address>
<destination address> ::= <physical address> | <logical address>
{option indicated by 1-bit group address indicator}
<physical address> ::= implicit: coordinator | <short address> |
<short Address><PAN Id> | <long address>
{option indicated by 2-bit addressing mode}
<logical address> ::= <group source> <group Id>
<group source> ::= <physical address>
<group Id> ::= <group counter>
“Atoms” (end symbols in grammar):
<short address> ::= 16-bit address
<long address> ::= 64-bit address
<PAN Id> ::= 16-bit PAN address
<group counter> ::= 1-octet field {this allows 256 groups with same group source}
Rene Struik, Certicom Corp.