June 2006 doc IEEE 802 15 06286 r

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Project: IEEE P 802. 15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Oki Response to request of Usage Models] Date Submitted: [28 June, 2006] Source: [Tadahiko Maeda] Company [Oki Electric Industry Co. , Ltd. ] Address [3 -4 Hikari-no-oka, Yokosuka-shi, Kanagawa, 239 -0847, Japan] Voice: [+81 -46 -847 -5141], E-Mail: [maeda 097@oki. com] Re: [Request of contributions for Usage Models for UMD subgroup] Abstract: [Proposal of Usage Model] Purpose: [To be adapted in 15. 3 c Usage Model Document] Notice: This document has been prepared to assist the IEEE P 802. 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 P 802. 15. Submission 1 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Proposed Usage Model Tadahiko Maeda Oki Electric Industry Co. , Ltd. Submission 2 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Wireless Home Video Network Internet Room 1 Home Gateway (Home Video Server) U 1 U 4’, U 4”, U 9 U 4’ HD TV Set (DEV 1) Corridor Laptop PC (DEV 2) U 4’, U 4” U 9 Repeater U 9 U 4” U 4’ Camcorder (DEV 4) Portable Device (DEV 5) Room 2 Repeater device: A device to extend a service area of the network. It might have multiple mode transceivers that operate on different channels. Submission HD TV Set (DEV 3) Room 3 U 4’: A variation of U 4 with a longer (up to 10 m) separation U 4”: A variation of U 4’ with a fixed receiver 3 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Usage Model Covers Use Cases Application mix Comment Residential (Wireless Home Video Network) U 1, U 4(U 4’&U 4”), U 9 1 x Server DEV 1: uncompressed HDTV(A 1) DEV 2, 3 & 4: compressed HDTV(A 1) DEV 5: contents download(A 2) A server streams uncompressed and compressed HD video to DEVs in the same room and other rooms. It also works as a download server to portable devices. Some repeater devices shall be equipped to extend service areas in a house. Submission 4 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Background • Audio/Video transmissions are considered as promising 60 GHz mm. Wave applications for home users. • Users have many AV equipments (TV set, PVR, Camcorder, etc) spread in several rooms. Family members can use them in individual rooms simultaneously. • Video sources can also be distributed and some come from outside home, e. g. through the Internet, CTV, TV broadcasts. Current trend is integrated digital living environments. • One solution is that one central home video server distributes video contents, which may be stored in it or come through it, to all rooms in a house. • Repeater devices are essential for these systems. Submission 5 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Applications in the System • Two classes of applications – Real-time HD video streaming applications • Compressed (MPEG-2): 24 Mbps (typical) • Uncompress (HDMI): 2. 2 Gbps – Non real-time or interactive applications • Huge file download/upload • WEB surfing – Both work on gigabit Ethernet • Throughput is limited mainly by equipments – Typically less than 100 Mbps Submission 6 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Traffic • Assume a following scenario; – Four members of a family enjoy video services in each room or a family room. – Each gets an HDTV streaming simultaneously from the same server either in a compressed format or uncompressed format. – On watching TV, each may downloads/upload video contents from/to the server. – Total traffic of eight applications ( 2 applications for 4 persons) is estimated around 500 Mbps at the end of the server. Submission 7 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Repeater • If N segment links in a home network share one channel time, its effective throughput is reduced to 1/N. • For example, seven repeater may divide a network into eight segments. It means that 3 Gbps PHY can support as small as 375 Mbps of throughput. • Repeaters should be able to transmit or receive simultaneously to keep total throughput hight. Submission 8 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.

June, 2006 doc. : IEEE 802. 15 -06/286 r 1 Other Involved Use Cases • U 4 is a compressed HD Video transmission to mobile devices at 0. 11. 0 m distance. • U 4’ is basically U 4 but its transmission distance is more than 1 m (up to 10 m). • U 4” is basically U 4 but its target devices are stationary. Submission 9 Tadahiko Maeda, Oki Electric Industry Co. , Ltd.