MCCAOP Advertisements November 2010 doc.: IEEE 802.11-10/815r1 November 2010 MCCAOP Advertisements Date: 2010-11-10 Authors: Michael Bahr, Siemens AG Michael Bahr, Siemens AG

November 2010 doc.: IEEE 802.11-10/815r1 November 2010 Abstract This presentation explains the concepts and motivation of the proposed changes for the MCCAOP advertisment as given in 11-10/814. Michael Bahr, Siemens AG Michael Bahr, Siemens AG

November 2010 # MCCAOP Reservations The draft allows for 65535 tracked MCCAOP reservations at a mesh STA. Example for lots of MCCAOP reservations at a mesh STA: Michael Bahr, Siemens AG

# Tracked MCCAOP Reservations at Mesh Gate November 2010 # Tracked MCCAOP Reservations at Mesh Gate # flows in network f = s * m * #flows/STA MCCAOPs at G is: f (NG) + f (GN) f (MN) + f (NM) m + n + 1 for Beacons Michael Bahr, Siemens AG

Mesh STA A This is Mesh STA “Dallas”. It is MCCAActivated (is true) November 2010 Mesh STA A This is Mesh STA “Dallas”. It is MCCAActivated (is true) Mesh STA “Dallas” has to track its own MCCAOP reservations (TX-RX and broadcast times) as well as the MCCAOP reservations of its neighbor mesh STAs (interfering times). Michael Bahr, Siemens AG

MCCAOP Advertisement Set November 2010 MCCAOP Advertisement Set Mesh STA „Dallas“ has to advertise its tracked MCCAOP reservations. The set of tracked MCCAOP reservations a mesh STA wants to advertise, whether complete or partial, is called „MCCAOP Advertisement Set“. An MCCAOP Advertisement Set can be complete. An MCCAOP Advertisement Set can be partial. Michael Bahr, Siemens AG

Partial vs. Complete MCCAOP Advertisement Set November 2010 Partial vs. Complete MCCAOP Advertisement Set at the transmitter side can send only new or changed MCCAOP reservations can send only selected tracked MCCAOP reservations partial MCCAOP Advertisement Sets reduce size of MCCAOP advertisements complete MCCAOP Advertisement Set deletes non-advertised reservations at the receiver side complete MCCAOP Advertisement Set: replaces all MCCAOP reservations previously received from the same transmitter with the latest MCCAOP advertisement. non-advertised MCCAOP reservations are deleted partial MCCAOP Advertisement Set: advertised MCCAOP reservations can be only added or updated. non-advertised MCCAOP reservations must not be deleted. Michael Bahr, Siemens AG

November 2010 Partial Reports concept of partial/complete is also valid for reports (TX-RX, broadcast, interfering) TX-RX and broadcast report are complete. TX-RX / broadcast report of previous advertisement are replaced. Non-advertised TX-RX and broadcast times are deleted. Interfering report is partial. MCCAOP reservations are appended or updated. No Interfering time can be deleted. Michael Bahr, Siemens AG

MCCAOP Advertisements Element November 2010 MCCAOP Advertisements Element MCCAOP Advertisement Set is encoded in MCCAOP Advertisements element mesh STA can track many reservations potentially up to 65535 MCCAOP Advertisements element can hold only up to 62 MCCAOP reservations Mechanism for splitting MCCAOP Advertisement Set over multiple MCCAOP Advertisements elements provided Michael Bahr, Siemens AG

Multiple MCCAOP Advertisements Elements November 2010 Multiple MCCAOP Advertisements Elements MCCAOP Advertisement Set Sequence Number: tuple <MCCAOP Advertisement Set Sequence Number, transmitter of MCCAOP Advertisement element> uniquely identifies MCCAOP advertisement set identifies MCCAOP Advertisements elements that belong together Advertisements Element Identifier identifier of MCCAOP Advertisements elements belonging to the same MCCAOP advertisement consecutive sequence: starts at 0, incremented by 1 Last Advertisements Element indicates last MCCAOP Advertisements element in the consecutive sequence Michael Bahr, Siemens AG

Frames with MCCAOP Advertisements Elements November 2010 Frames with MCCAOP Advertisements Elements MCCAOP Advertisements frame MCCAOP Advertisements elements of the same MCCAOP advertisement set Beacon frame only one MCCAOP Advertisements element at a time MCCAOP advertisement sets that require multiple MCCAOP Advertisements elements are transmitted in multiple subsequent Beacon frames reduces beacon bloat Probe Response frame sent only once, but already full of bytes only one MCCAOP Advertisements element, maybe partial MCCAOP advertisement set (most important MCCAOP reservations) Michael Bahr, Siemens AG

Distributed Report subfield November 2010 Distributed Report subfield Scope of Distributed Report subfield: type of report (TX-RX, broadcast, or interfering) MCCAOP Advertisments element indicates whether a TX-RX, broadcast, or interfering report is distributed over multiple MCCAOP Advertisements elements (of the same MCCAOP advertisement set) or not if not (Distributed Report subfield is equal to 0): it is sufficient to consider only this MCCAOP Advertisements element in order to know all MCCAOP reservations of this report (TX-RX, broadcast, or interfering) receiver can update its tracked MCCAOP reservations even if it did not receive all MCCAOP Advertisements elements of the MCCAOP advertisement set (for instance, when missing a beacon) Michael Bahr, Siemens AG

Specification of MCCAOP Advertisements Element November 2010 Specification of MCCAOP Advertisements Element Michael Bahr, Siemens AG

Specification of MCCA Information Field November 2010 Specification of MCCA Information Field Michael Bahr, Siemens AG

Specification of MCCAOP Reservation Report Field November 2010 Specification of MCCAOP Reservation Report Field Michael Bahr, Siemens AG

References 11-10/814r1 „MCCAOP Advertisements“ IEEE 802.11s D7.02 November 2010 References 11-10/814r1 „MCCAOP Advertisements“ contains normative text implementing these ideas IEEE 802.11s D7.02 Michael Bahr, Siemens AG