1. Use of More Data Field Date: 2005-11-07 Authors: Nov 2005 Month Year
doc.: IEEE yy/xxxxr0
Nov 2005
Use of More Data Field
Date:
Authors:
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Jon Edney, Nokia
John Doe, Some Company

2. Month Year
doc.: IEEE yy/xxxxr0
Nov 2005
Abstract
This submission describes a modification to the use of the “More Data” field to enable the AP to signal the state of its transmission queue to stations that are not is power-save mode.
Jon Edney, Nokia
John Doe, Some Company

3. Review of basic Power Save Operation
Nov 2005
Review of basic Power Save Operation
The “More Data” bit is used to indicate that the AP has data waiting to be sent to the STA
STA gets an indication of waiting data in the “TIM”: part of a beacon sent at DTIM.
STA Polls AP for each MPDU
AP sends MPDU and sets “More data” bit if there are further MPDUs waiting to be sent
STA can keep polling until More Data bit is clear
The more data bit is not used unless STA is in power save mode
Jon Edney, Nokia

4. Nov 2005
Additions by e
Power save mechanism extended to allow for sending of prioritized traffic from both STA and AP side. Designed to ensure low priority data from AP does not block high priority data from STA
More Data bit can be set by QAP in ACK frame responding to data from QSTA
Otherwise usage is similar and only appropriate to stations in power save mode.
Jon Edney, Nokia

5. Nov 2005
New Proposal
To use “More Data” bit also with STAs that are not in PS mode to indicate that data is ready to be delivered
Purpose: To enable stations to delay the start of a transition until all pending data is delivered
Jon Edney, Nokia

6. Key points of Normative Text
Nov 2005
Key points of Normative Text
Use of More Data bit only applies to Fast BSS STAs that are not in powersave mode.
Setting of More Data bit by Fast BSS AP is optional (at the APs discretion)
Use of More Data bit information by STA is not defined (although it is suggested it be used in the decision of when to transition)
Jon Edney, Nokia

7. Nov 2005
Motion
Move to adopt the text of r-use-more-data-bit.doc into the TGr Draft
Jon Edney, Nokia

8. References 11-05-0151-00-000r-new-twist-more-data-bit.ppt
Nov 2005
References
r-new-twist-more-data-bit.ppt
r-use-more-data-bit.doc
Jon Edney, Nokia