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Briarcliff Manor, New York

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Presentation on theme: "Briarcliff Manor, New York"— Presentation transcript:

1 Briarcliff Manor, New York
Month 1998 doc.: IEEE /xxx July 2001 1394 Requirements for e Takashi Sato Philips Research USA Briarcliff Manor, New York John Doe, His Company

2 Outline Our view of Wireless 1394 Wireless 1394 architecture
Month 1998 doc.: IEEE /xxx July 2001 Outline Our view of Wireless 1394 Wireless 1394 architecture Supported net topology General requirements Hooks needed in e Summary & Conclusion John Doe, His Company

3 Wireless 1394 Connect 1394 clusters wirelessly
July 2001 Connect 1394 clusters wirelessly Connect wireless 1394 devices to the network Enable mobile1394 applications and ease of installation DTV DVCR Living Room Remote D-VHS CD Changer CD-R MD MIDI Keyboard Notebook PC Amp DV Camcorder NIM HDD Home Office Printer Bed Room DVD TV STB Scanner Security Camera Navi. System Cable Phone Line Wireless 1394 Bridge PDA SP 1394 node

4 1394 Node/Bridge Architecture
July 2001 1394 Node/Bridge Architecture 1394 Phy 1394 Link 1394 App. 1394 Tr. Isoch. asynch. 1394 Node Bridge Phy Bridge Link Bridge Management & Internal Fabric Bridge Tr. Isoch. asynch. 1394 Bridge

5 Wireless1394 Architecture
July 2001 Wireless1394 Architecture Wireless1394 Node Wireless 1394 Bridge 1394 App. Bridge Management & Internal Fabric 1394 Tr. Bridge Tr. Bridge Tr. asynch. Isoch. asynch. Isoch. Isoch. asynch. 1394 PAL 1394 PAL Bridge Link 802.11e 802.11e Bridge Phy 802.11a 802.11a

6 Net Topology 1394 Bus 1394 node 1394 node 1394 node 1394 Bus 1394 node
July 2001 1394 Bus 1394 node 1394 node 1394 node 1394 Bus 1394 node Wireless 1394 bridge Wireless 1394 bridge WLAN (virtual 1394 bus) Wireless 1394 bridge Wireless 1394 node Wireless 1394 node WLAN (virtual 1394 bus) Wireless 1394 node Wireless 1394 bridge 1394 node 1394 Bus 1394 Bus Wireless 1394 node Wireless 1394 node 1394 bridge 1394 bridge 1394 Bus 1394 node 1394 node 1394 node 1394 node

7 Wireless 1394 Architecture
July 2001 Wireless 1394 Architecture Adopted by ETSI/BRAN for Wireless 1394 over Hiperlan/2 in Europe Adopted by MMAC for Wireless 1394 in Japan Adopted by 1394 TA/WWG for Wireless 1394 in US, including Wireless 1394 over There have been efforts for harmonization

8 General Requirements Support for multiple priority traffic
July 2001 General Requirements Support for multiple priority traffic Clock synchronization Isochronous traffic Asynchronous traffic Support for (virtual) bus management Topology change management Bandwidth management Distributed control

9 July 2001 Hooks Needed in e Frequent and stable clock/frame synchronization capability enables 1394 clock synchronization in 1394 PAL (1394 clock: MHz ± 100 ppm) e.g., HL2 uses 2ms frame synch and frame number beacon might be used for this purpose Isochronous capability provides guaranteed bandwidth and bounded latency Multicast capability enables multiple listeners for an isoch/asynch stream join/leave capability without disturbing ongoing streams

10 Hooks Needed in 802.11e Broadcast capability Retry limit capability
July 2001 Hooks Needed in e Broadcast capability enables asynchronous packet broadcast Retry limit capability number of retries (or lifetime) can be set by higher layer (at least isoch and asynch packets need separate parameters) retry failure (timeout) to be reported to higher layer (Virtual) bus management support notification of (virtual) bus topology change Isochronous resource management support notification of available bandwidth provision for bandwidth degradation after stream setup

11 Summary & Conclusion We are coming from CE camp
July 2001 Summary & Conclusion We are coming from CE camp We cannot adopt IP-centric solutions just yet There is very few IP-enabled CE devices IP is immature for AV applications 1394 (directly) over makes more sense than 1394 over IP over AV applications care about overhead more than IP applications do IP can coexist over or be carried over 1394 over if needed

12 July 2001 Summary & Conclusion We need hooks in e to support our Wireless 1394 over solution Things that can be dealt with in 1394 CL will be dealt in 1394 CL But, some other things (i.e., hooks) have to be in e More interaction is encouraged between TGe and 1394 TA/WWG Please give 1394 TA/WWG a chance to review the e draft thoroughly, identify required hooks, and make proposals

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