1. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Common discovery mode for PAC: MAC]
Date Submitted: [May 2013]
Source: [Wun-Cheol Jeong, Chang-Sub Shin, Tae-Joon Park, Hoyong Kang]
Company: [ETRI]
Re: []
Abstract: This pre-proposal document describes how common discovery is supported from the MAC’s perspective.
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
<author>, <company>

2. Common discovery mode for PAC: MAC
<month year>
doc.: IEEE <doc#>
Common discovery mode for PAC: MAC
Wun-Cheol Jeong, Chang-Sub Shin,
Tae-Joon Park, Hoyong Kang
ETRI
<author>, <company>

3. Common discovery mode for PAC WPAN
<month year>
doc.: IEEE <doc#>
Common discovery mode for PAC WPAN
Sub-GHz
2.4 GHz PD
5 GHz
Neighbor PD discovery
WPAN discovery for association/initiation
See PHY proposals for common discovery mode ( rev0, rev0)
<author>, <company>

4. Common discovery mode for PAC WPAN
Common MAC/PHY for PAC discovery
is different from the communication mode.
should be simple and energy-efficient.
provides fast and scalable PD discovery mechanism.
NHL
MAC
Common Mode
MAC
Communication Mode
PHY
Common Mode
PHY 1
PHY 2
PHY 3

5. Illustration of PD discovery
PD A
Discovery-Request
TCS
PD B
PD C
Asynchronous Request command Tx:
PDs do not need to be synchronized.
But, TR > TCS

6. PD discovery via common mode
Simple but fast discovery procedure:
Asynchronous channel access
Not passive PD discovery (listening/scanning the channel)
Active PD discovery using request command
Low power operation:
Every PD shall sample the channel periodically.
PD that wishes to discover neighboring devices sends request command longer than the channel sample listening period.
Scalable discovery :
Response only to the appropriate PD discovery request
Avoid collision due to responses from unnecessary PDs
Save power consumption due to unnecessary Tx/Rx
Discovery request includes IDs to discover.

7. Thank you.
Q & A