Submission doc.: IEEE 11-14/0867r0 July 2014 Donald Eastlake, HuaweiSlide 1 A Subsetting and EPD Approach Date: 2014-07-13 Authors:

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Presentation transcript:

Submission doc.: IEEE 11-14/0867r0 July 2014 Donald Eastlake, HuaweiSlide 1 A Subsetting and EPD Approach Date: Authors:

Submission doc.: IEEE 11-14/0867r0 July 2014 Donald Eastlake, HuaweiSlide 2 Abstract This presentation describes how to solve a number of ak (GLK) problems using synthetic Receiver MAC addresses.

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 3 Problems Addressed in These Slides AP specification of a subset of receivers for multi- destination frames. Support for EPD (Ethertype Protocol Discrimination). Support for mixed BSS – both GLK and non-GLK stations. GLKness should be a property of each pairwise link. Frame abbreviation in light of VLAN tags, etc.

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 4 Use a New OUI Using a new global OUI, can create synthetic Receiver MAC addresses. Can create Group Addresses and Individual Addresses 00-TB-D0? 01-TB-D0? 00-TB-D0?

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 5 Sub-setting Solution Indicate excluded receiver(s) in the lower 24-bits: Supports sending to arbitrary subset of 3 GLK non-AP STAs without complexity or restriction on AID assignment: Send to 1 or 3 with individual address or no AID specified. Send to 2 by specifying the one AID to exclude. Support sending to an arbitrary subset of a larger number of non- AP STAs but requires restrictions on AID assignment or a bit assignment protocol. 01-TB-D0AID 01-TB-D0bits

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 6 Support for EPD Saves 6 bytes in the vast majority of data frames. Use LPD (LLC Protocol Discrimination) for all MPDUs with current Receiver addresses. Use EPD for all data frames with Receiver synthetic MAC address built with the new OUI. Easy to make individually addressed synthetic MACs: Use special AID field value or flags in spare bits to indicate AP. 00-TB-D0AID

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 7 Support for Mixed BSS A link (association) is GLK if and only if both STAs are GLK. Legacy STAs still restricted to LPD and will ignore both individually and group addressed MPDUs to the new Receiver synthetic MAC addresses. GLK STAs can use LPD or EPD as they choose. Zero wasted bytes for both Ethertype data and LLC data. For Individually addressed MPDUs, just use the real or synthetic MAC Receiver address. Group addressed case a bit more complex but could indicate LPD with subsetting by a flag in the synthetic Receiver MAC.

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 8 Frame Abbreviation Four bytes can be saved per MSDU because VLAN tags will be common – particularly due to the Priority Code Point ⇔ UP tweaking. A few Ethertypes account for almost all traffic. Possible Individually addressed Receiver synthetic MAC: Total savings possible over LPD: 10 bytes OUI 00-TB-D0 Ethertype Index Association ID VLAN flag other flags

Submission doc.: IEEE 11-14/0867r0July 2014 Donald Eastlake, HuaweiSlide 9 References Draft 0.02 of ak and results of Comment Collection 17: P802.11ak_D0.02.pdf 11-14/559r7, “TGak CC17 Comments” Detailed amendment text: 11-14/0826r0, “Frame Type Encoding”