WLAN Overlay with 60 GHz Channels March 2008 doc.: IEEE 802.11-08/0364r0 March 2008 WLAN Overlay with 60 GHz Channels Date: 2008-03-18 Authors: Barr (Motorola) John Barr (Motorola)

Purpose of this document March 2008 doc.: IEEE 802.11-08/0364r0 March 2008 Purpose of this document This proposal is to stimulate discussions and highlight a possible focus for using IEEE 802.15.3c PHY as a high speed channel in cooperation with IEEE 802.11(n) WLAN host. Recommendation: Combine strengths of 802.11 with 802.15.3c PHY instead of attempting to create a separate 60 GHz WLAN Barr (Motorola) John Barr (Motorola)

Key elements Concepts highlighted March 2008 doc.: IEEE 802.11-08/0364r0 March 2008 Key elements Concepts highlighted WLAN Use Case Focused Clusters of high throughput access a desired use case Documents that served as a foundation for this proposal 08/0344r0 - WFA VHT Usage Models P802-15-3c-DF2-Draft-Amendment.pdf 15-06-0369-09-003c-summary-usage-model.ppt Barr (Motorola) John Barr (Motorola)

WFA Usage Model Examples March 2008 doc.: IEEE 802.11-08/0364r0 March 2008 WFA Usage Model Examples 1a: Desktop Display at home or enterprise Pre-Conditions: User has operation WLAN network for internet access and general data networking. The wireless network used for storage and display may or may not be part of the other operational WLAN network. Application: User can wirelessly display the output of the computer to monitor or TV using uncompressed video. User can wirelessly store data from a computer to a hard drive. The data being stored transfers at ~1Gbps, jitter is < 200msec, delay is <200msec, 10E-5 PER. Environment: Devices could be operating in isolated cluster in a room such as a den or in close proximity to other similar clusters in a multi-cube office. Transmissions are mostly LOS. Distances between far corners of the room are <5M. 3a: Rapid Sync n Go, File Transfer Application: User can sync movies to/from the camcorder and transfer the picture files. An MPEG4 video file of 30MB takes 4 minutes over a single hop 1Gbps link. 200 jpeg (picture) files of 10MB takes ~30 seconds over a 1Gbps single hop link. Jitter and delay are not critical. Instead, the key metric is the user’s time spent to do a transfer. Less than 1 minute is acceptable. 1-5 minutes may be acceptable. More than 5 minutes is not acceptable. Environment: Devices could be operating in isolated cluster in a room such as a den or in close proximity to other similar clusters in multi-cube office. Transmissions are mostly LOS. Distance between far corners of the room are <8m. Barr (Motorola) John Barr (Motorola)

March 2008 doc.: IEEE 802.11-08/0364r0 March 2008 Sample PAR: scope The scope of this project is the definition of an amendment to the 802.11 physical layers (PHY) and the 802.11 Medium Access Control Layer (MAC) so that modes of operation can be enabled that are capable of supporting: Full compatibility with existing IEEE Std 802.11-2007 plus IEEE 802.11n amendment systems for backwards compatibility, Recognition and allocation of dedicated VHT channels using 60 GHz PHY compatible with IEEE 802.15.3c amendment PHY for multi-gigabit direct links between AP-STA or STA-STA, Partitioning of high throughput data traffic to allocated VHT channels. Barr (Motorola) John Barr (Motorola)

Sample PAR: purpose (evolution TGn) March 2008 doc.: IEEE 802.11-08/0364r0 March 2008 Sample PAR: purpose (evolution TGn) The purpose of the project is to improve the 802.11 wireless local area network (LAN) user experience by providing significantly higher throughput for existing WLAN application areas and to enable new market segments that have throughput requirements that cannot be met with current 2.4 and 5 GHz channel allocations. Barr (Motorola) John Barr (Motorola)

March 2008 Concept Typical WLAN operation provided by existing IEEE 802.11(n) radio New device capability discovery messages created to allow VHT devices to determine whether target devices support VHT mode, manage availability of VHT channels, and allocate VHT channels to device pairs on demand Utilize 60 GHz radio to determine if VHT channel connection possible VHT channels utilize 60 GHz radio based on IEEE 802.15.3c PHY but use extended 802.11 MAC for compatibility with existing 802.11 applications VHT MAC extensions allow allocation of packet traffic to 802.11(n) channel or 60 GHz channel(s): Typical WLAN traffic routed to 802.11(n) channel VHT traffic routed to 60 GHz channel associated with an application Multiple 60 GHz channels could be active at the same time Barr (Motorola)

March 2008 Rationale Without allocation of additional unlicensed (or licensed) spectrum, it may not be possible to realize multi-Gbps throughput. It will be extremely difficult to optimize 60 GHz performance while maintaining WLAN medium access concepts. IEEE 802.15.3c PHY amendment has capability of supporting 5 Gbps PHY rates between two devices within 10 meters, and can support multiple 60 GHz channels in the same area with spectral and beam steering mechanisms. IEEE 802.15.3c PHY will be realized by silicon providers in late 2009 and no later than end of 2010. Barr (Motorola)