doc.: IEEE 802.15-<doc#> <month year> doc.: IEEE 802.15-<doc#> Project: IEEE P802.15 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] E-Mail:[wjeong@etri.re.kr] 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 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. <author>, <company>

Common discovery mode for PAC: MAC <month year> doc.: IEEE 802.15-<doc#> Common discovery mode for PAC: MAC Wun-Cheol Jeong, Chang-Sub Shin, Tae-Joon Park, Hoyong Kang ETRI <author>, <company>

Common discovery mode for PAC WPAN <month year> doc.: IEEE 802.15-<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 (15-13-0182rev0, 15-13-0275rev0) <author>, <company>

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

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

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.

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