doc.: IEEE 802.15-<doc#> <month year> <month year> <month year> <month year> <month year> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Proposed text for Minimum LIFS and SIFS periods for UWB PHY] Date Submitted: [March 2015] Source: [Igor Dotlic, Huan-Bang Li, Marco Hernandez, Ryu Miura] Company: [NICT] Address: [3-4 Hikarino-oka, Yokosuka, Kanagawa, Japan] Voice:[+81-468475066 ], FAX: [:[+81 468475431], E-Mail:[dotlic@nict.go.jp] Re: [TG8 Call for Proposals (CFP) (DCN:13-0069-05-0008)] Abstract: [The document presents a proposed text for minimum LIFS and SIFS periods for UWB PHY] Purpose: [To inform 15.8 group about the benefits of IR-UWB PHY] 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. Page 1 Page 1 Page 1 Page 1 <author>, <company> <author>, <company> <author>, <company> <author>, <company> <author>, <company>

doc.: IEEE 802.15-<doc#> <month year> <month year> <month year> <month year> <month year> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> Proposed text for Minimum LIFS and SIFS periods for UWB PHY Igor Dotlic Huan-Bang Li Marco Hernandez Ryu Miura NICT, Japan Slide 2 Page 2 Page 2 Page 2 Page 2 <author>, <company> <author>, <company> <author>, <company> <author>, <company> <author>, <company>

doc.: IEEE 802.15-<doc#> <month year> <month year> <month year> <month year> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> doc.: IEEE 802.15-<doc#> Overview SIFS - short interframe spacing LIFS - long interframe spacing In 15.4-2011: For the UWB PHY, the minimum LIFS period and SIFS period are: — macLIFSPeriod – 40 preamble symbols (Tpsym) — macSIFSPeriod – 12 preamble symbols (Tpsym) Tpsym = 993.59 ns, 1017.63 ns, 3974.36 ns In 15.8 UWB PHY: BPM-BSPK modulation: Tpsym = 729.2 ns -1169.9 ns OOK modulation : Tchip= 1000 ns Slide 3 Page 3 Page 3 Page 3 <author>, <company> <author>, <company> <author>, <company> <author>, <company>

Proposed text For the UWB PHY BPPM-BSPK modulation, the minimum LIFS period and SIFS period are: — macLIFSPeriod – 40 preamble symbols (Tpsym) — macSIFSPeriod – 12 preamble symbols (Tpsym) Where Tpsym for different preamble sequences is specified in Table 39. For the UWB PHY OOK modulation, the minimum LIFS period and SIFS period are: — macLIFSPeriod – 40 chip intervals (Tchip=1 µs) — macSIFSPeriod – 12 chip intervals (Tchip=1 µs)