Doc.: IEEE 802.11-10/0219r3 Submission 802.11 -- Interworking with 802.1Qat Stream Reservation Protocol Date: 2010-03-01 Authors: Mar 2010 Ganesh Venkatesan,

doc.: IEEE 802.11-10/0219r3

Submission

802.11 -- Interworking with 802.1Qat Stream Reservation Protocol

Date: 2010-03-01

Authors:Name Affiliation Address Phone email Ganesh Venkatesan Intel Corporation JF3-336 2111NE 25th Ave +1 503 334 6720 Ganesh.Venkatesan@intel

.com Brian Hart Cisco Systems 170 W Tasman Dr, San

Jose, CA 95134 408-5253346 [email protected]

Mar 2010

Ganesh Venkatesan, Intel Corporation, et alSlide 1

doc.: IEEE 802.11-10/0219r3

Submission Slide 2

Abstract

This submission is an overview of proposed input from 802.11 to 802.1Qat Annex-Q Clause Q.3 --

Discussions on the normative text (10/137r0) corresponding to 09/926r7 spawned interest in revisiting the solution proposed and seek a ‘future proof’ alternative, if possible.

Mar 2010


Adobe Acrobat Document

Note: In the rest of this presentation AP and non-AP STA denote 802.11 implementations with dot1QatNetworking set to true.

doc.: IEEE 802.11-10/0219r3

Submission

Handling SRP Reservation Requests

Mar 2010


doc.: IEEE 802.11-10/0219r3

Submission

Common Scenarios

Mar 2010


Talker

AP

DMN

Listener(s)

AP

DMN

Talker

Listener(s) Talker

AP

Listener(s)

non-AP STA non-AP STA non-AP STA non-AP STAAlternate Data Path

doc.: IEEE 802.11-10/0219r3

Submission

Advanced Scenario: STA is an Intermediate node or a Talker/Listener

Mar 2010


AP

DMN

Listener(s)

non-AP STA non-AP STA

Talker/Listener(s)

TalkerListener(s)

• non-AP STA are intermediate nodes, Talker or Listener

• Note: This scenario is included for completeness. Support for this requires resolution of the “Station Bridge issue*”.

* See http://www.ieee802.org/1/files/public/docs2008/avb-nfinn-802-11-bridging-0308-v3.pdf

doc.: IEEE 802.11-10/0219r3

Submission

• A non-AP STA can either be Talker/Listener or an intermediate node in the path from the Talker to the Listener.

• An intermediate node non-AP STA or a non-AP STA that is also the Talker/Listener just pass the MSRPDU to the AP

• AP forwards the MSRPDU to the AP’s DMN• AP’s DMN invokes (DMN/AP interface) Reserve.request or

Query.request with parameters corresponding to the received SRP Reservation/Query request

• If the MSRPDU is a Reservation Request and the AP has sufficient resources:• AP’s SME issues a MLME.ADDTS.response to the talker• AP’s SME issues a MLME.ADDTS.response to the listener

• AP responds to the DMN with a Reserve.confirm or Query.confirm

MSPRDU Processing at the AP/DMN (adopted proposal – 10/137r0)

Mar 2010


doc.: IEEE 802.11-10/0219r3

Submission

MSRP Handling at AP/DMN (to Talker/Listener) In 10/137r0

Mar 2010


doc.: IEEE 802.11-10/0219r3

Submission

Table Q.3 SRP to 802.11 SME QoS Services Mapping

Mar 2010


MSRP Attribute MAD Primitive 802.11 SME QoS Service

Description

Talker Advertise MAD_Join_Request (new)

SME.QUERY Query bandwidth availability without reservation

Listener Ready or Listener Ready Failed

MAD_Join_Request (new)

SME.ADDTS Reserve bandwidth for a stream

Listener Ready or Listener Ready Failed

MAD_Join_Request () SME.ADDTS Modify bandwidth reserved for a stream – no renewal needed, if requirements have not changed.

Listener Request Removed

MAD_Leave_Request () SME.DELTS Free bandwidth associated with a stream

MAD – MRP (Multiple Registration Protocol) Attribute Declaration

doc.: IEEE 802.11-10/0219r3

Submission

Mar 2010


Changes to 802.11 – Summary

1. Ability for APs to send Autonomous ADDTS Response2. Add ADDTS Response.indication to the STA MLME

interface (omission in 10/137r0)3. To the DMN 802.11 interface (out of scope for 802.11)

• Add SME-QUERY.{request|confirm}• Add SME-ADDTS.{request|confirm}

802.1Qat1. Mandate that 802.11 STAs and APs supporting SRP shall also

support EDCA Admission Control2. The 802.11 AP and SRP DMN shall co-exist in the same device3. The SRP DMN shall generate 802.11 TSPECs as described in

document 09/926r74. Mandate that 802.11STAs and APs supporting SRP shall encapsulate

and de-encapsulate the 802.1q Tag

doc.: IEEE 802.11-10/0219r3

Submission Slide 10

Summary of discussions in LA

• Need a discussion on the internals of 802.1Qat as far as SRP goes – Scheduled for the joint meeting with 802.1AVB in March, 2010

• How does the current proposal (10/137r0) deal with Power Save?• How does the current proposal deal with TSPEC, TCLAS and

TCLAS processing negotiation?• Would the current proposal be able to take advantage of

enhancements in 802.11? • Should the solution be the same irrespective of if the 802.11 STA

is a Talker/Listener or is just a node in the path from the Talker to the Listener?

Mar 2010


doc.: IEEE 802.11-10/0219r3

Submission

Alternate Proposal-A .1 -- MSRP Handling at AP/DMN (to Talker/Listener)

Mar 2010


• non-AP STA at the Talker/Listener ends parse SRP and invoke corresponding 802.11 mechanisms

• Synchronization issues need to be addressed at the AP

doc.: IEEE 802.11-10/0219r3

Submission

Alternate Proposal-A .2 -- MSRP Handling at AP/DMN (to Talker/Listener)

Mar 2010


• Upper layer request for a .1Qat reservation is mapped by .1Qat Talker/Listener to a .11 ADDTS exchange, and if successful, the .1Qat Talker/Listener proceeds with MSRPDU exchanges

• No Synchronization issues at the AP

802.1Qat Talker/ListenerAP

DMN

AP’s SME

Upper layer reservation

request/MSRPDU

Upper layer reservation response/MSRPDU

ADDTS Request

ADDTS Response

...MSRPDU

Non-AP STA SMENon-AP MLME

• Network-side request for a .1Qat reservation is processed by DMN at AP (omitting .11 reservations) and passed to .1Qat Talker/Listener which requests the SME to complete a .11 ADDTS exchange. The .1Qat Talker/Listener reports the outcome to the DMN at AP

• No Synchronization issues at the AP

802.1Qat DMN

MSRPDU

MSRPDU

ADDTS Request

AP SME

ADDTS Response

...

AP MLME

Talker/ListenerNon-AP STA SME

Non-AP STA MLME

doc.: IEEE 802.11-10/0219r3

Submission

Alternate Proposal-B -- MSRP Handling at AP/DMN (to Talker/Listener)

Mar 2010


1. Need a new “Reserve” management frame between AP to STA2. STA at Talker end does not have to parse SRP messages; no additional processing in 802.113. No synchronization issues4. Addresses all issues listed in slide-10

doc.: IEEE 802.11-10/0219r3

Submission

Mar 2010


What is in the Reserve Request?

1. TSPEC Element with parameters set to values derived from information in the MSRPDU

2. Optionally TCLAS and TCLAS Processing elements.

doc.: IEEE 802.11-10/0219r3

Submission

Mar 2010


What is in the Reserve Response?A Status Code corresponding to the Success/Failure of TSPEC/TCLAS negotiation between the AP and the STA

doc.: IEEE 802.11-10/0219r3

Submission

Mar 2010


The TSPEC Element in Reserve RequestElement ID

Length TS Info Nominal MSDU Size

Max MSDU Size

Min Service Interval

Max Service Interval

Inactivity Interval

Suspension Interval

EDCA-AC

13 55 09/926r7 Slide #20

SRP Tspec MaxFrameSize + 18

SRP Tspec MaxFrameSize + 18

n/a n/a n/a n/a

HCCA 13 55 09/925r7 Slide #22

10 10 ? ?

Octets 1 1 3 2 2 4 4 4 4

Service Start Time

Minimum Data Rate

Mean Data Rate

Peak Data Rate

Burst Size

Delay Bound

Minimum PHY Rate

Surplus Bandwidth Allowance

Medium Time

EDCA-AC

n/a n/a (SRP Tspec MaxFrameSize +18) * SRP Tspec MaxIntervalFrames

n/a n/a 20msecs 11.42857 *(SRP TSpec MaxFrameSize + 18) * SRP TSpec MaxIntervalFrames bits/sec

1.2 n/a

HCCA n/a 0 (SRP Tspec MaxFrameSize + 18) * SRP Tspec MaxIntervalFrames

(SRP Tspec MaxFrameSize + 18) * SRP Tspec MaxIntervalFrames * 10-2

n/a

Octets 4 4 4 4 4 4 4 2 2

doc.: IEEE 802.11-10/0219r3

Submission

Mar 2010


Straw Polls1.Should we stay with just the current solution (Slide-7)?2.Which of the three alternate proposals do you prefer

• A.1• A.2• B

3.Should we allow a simple and a complete solution – current solution (slide-7) + Alternate (one of slide-11, 12 or 13) or just an Alternate Proposal (one of slide-11, 12 or 13)?

Documents

Doc.: IEEE 802.11-10/0219r3 Submission 802.11 -- Interworking with 802.1Qat Stream Reservation Protocol Date: 2010-03-01 Authors: Mar 2010 Ganesh Venkatesan,