1. doc.: IEEE b
17 March, 2004
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Associated Devices Information Element and Faster Association]
Date Submitted: [17 March, 2004]
Source: [Sunil Jogi, Prashant Wason, Balaji Holur, Manoj Choudhary (presenter), Wonyong Yoon, Yongsuk Kim] Company [Samsung India Software Operations/Samsung Advanced Institute of Technology]
Address [No. 3/1, JP Techno Parks, Millers Road, Bangalore, INDIA ]
Voice:[ ext:5000], FAX: [ ],
Re: [IEEE /D17]
Abstract: [The document suggests inclusion of an Associated Devices Information Element in the beacon frame and a faster association procedure for draft.]
Purpose: [For discussion to add an Associated Devices Information Element in the beacon frame and a faster association procedure in draft.]
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
Manoj Choudhary, SISO/SAIT

2. Associated Devices Information Element and Faster Association
17 March, 2004
Associated Devices Information Element and Faster Association
17 March, 2004
Manoj Choudhary, SISO/SAIT

3. 17 March, 2004
Abstract
We propose an Associated Devices Information Element (ADIE) in the beacon frame that conveys association status of all devices (DEVIDs) in the piconet.
We propose a faster association procedure using Associated Devices Information Element (ADIE).
The proposed Associated Devices Information Element (ADIE) may be used for some other purposes also.
Manoj Choudhary, SISO/SAIT

4. Agenda Current Solution Problems with Current Solution
17 March, 2004
Agenda
Current Solution
Problems with Current Solution
Proposed Solution
Summary
Manoj Choudhary, SISO/SAIT

5. Current Solution (1) Beacon frame
17 March, 2004
Current Solution (1)
Beacon frame
There is a clerical error in the draft diagram (L1 is shown as Lm)
Beacon is sent by PNC at the start of all the superframes
Beacon contains different Information Elements (IEs).
Details about beacon frame: Reference Section in Draft P /D17, February 2003
Manoj Choudhary, SISO/SAIT

6. 17 March, 2004
Current Solution (2)
These IEs are encoded in type, length, value format. The IEs in the beacon payload may appear in any order except for the channel time allocation (CTA) IEs
Element IDs 0x00 to 0x0F: Already assigned
Element IDs 0x10 to 0x7F: Reserved
Element IDs 0x80 to 0xFF: Vendor specific
Details about Element IDs: Reference Table 48 in Draft P /D17, February 2003
Details about Information Elements: Reference Section 7.4 in Draft P /D17, February 2003
Manoj Choudhary, SISO/SAIT

7. 17 March, 2004
Current Association Procedure (Reference Section in Draft P /D17, February 2003)
Manoj Choudhary, SISO/SAIT

8. Problems with Current Solution
17 March, 2004
Problems with Current Solution
Longer and centralized association procedure
New node (trying to join) does not have information about associated nodes in the piconet and their DEVIDs
Manoj Choudhary, SISO/SAIT

9. Proposed Solution Associated Devices Information Element (ADIE)
17 March, 2004
Proposed Solution
Associated Devices Information Element (ADIE)
Purpose of this IE is to provide the information about all associated devices in beacon
Element ID of ADIE is 0x10 (Which is taken from reserved pool of Element IDs).
Details about Element IDs: Reference Table 48 in Draft P /D17, February 2003
Manoj Choudhary, SISO/SAIT

10. Format of Associated Devices IE (ADIE)
17 March, 2004
Format of Associated Devices IE (ADIE)
Total Length of ADIE (bytes) = ((2 ^ Length of DEVID field in bits) / 8) + Size of Length field + Size of Element ID field = ((2 ^ 8) / 8) = 34
Manoj Choudhary, SISO/SAIT

11. Proposed beacon with ADIE
17 March, 2004
Proposed beacon with ADIE
Manoj Choudhary, SISO/SAIT

12. Proposed Association Procedure
17 March, 2004
Proposed Association Procedure
By using ADIE, new DEV can find out unused DEVIDs.
New DEV can choose a random DEVID from the unused DEVIDs and should propose it as its DEVID to PNC.
So, Association Response can be a directed message, which is broadcast in current specification.
Manoj Choudhary, SISO/SAIT

13. Proposed Association Procedure MSC
17 March, 2004
Proposed Association Procedure MSC
Manoj Choudhary, SISO/SAIT

14. 17 March, 2004
Summary
We propose an Associated Devices Information Element (ADIE) in the beacon frame that can tell about all associated devices and their DEVIDs in the piconet.
We propose a decentralized and faster association procedure using Associated Devices Information Element (ADIE).
The proposed Associated Devices Information Element (ADIE) may be used for some other purposes also like routing extensibility.
Manoj Choudhary, SISO/SAIT