doc.: IEEE 802.15-04-0144-00-003b 17 March, 2004 Project: IEEE P802.15 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 - 560052 ] Voice:[91-80-51197777 ext:5000], FAX: [91-80-51148855], E-Mail:[manojc@samsung.com] Re: [IEEE 802.15.3/D17] Abstract: [The document suggests inclusion of an Associated Devices Information Element in the beacon frame and a faster association procedure for 802.15.3 draft.] Purpose: [For discussion to add an Associated Devices Information Element in the beacon frame and a faster association procedure in 802.15.3 draft.] 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. Manoj Choudhary, SISO/SAIT

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

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

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

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 7.3.1 in Draft P802.15.3/D17, February 2003 Manoj Choudhary, SISO/SAIT

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 P802.15.3/D17, February 2003 Details about Information Elements: Reference Section 7.4 in Draft P802.15.3/D17, February 2003 Manoj Choudhary, SISO/SAIT

17 March, 2004 Current Association Procedure (Reference Section 8.3.1 in Draft P802.15.3/D17, February 2003) Manoj Choudhary, SISO/SAIT

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

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 P802.15.3/D17, February 2003 Manoj Choudhary, SISO/SAIT

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) + 1 + 1 = 34 Manoj Choudhary, SISO/SAIT

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

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

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

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