1. 802.11e features for the enterprise
November 2000
doc.: IEEE /375
November 2002
802.11e features for the enterprise
Mathilde Benveniste
Avaya Labs - Research
M. Benveniste, Avaya Labs Research
Mathilde Benveniste, AT&T Labs- Research

2. Objective Introduce EDCF-RR for polled HCF November 2002
M. Benveniste, Avaya Labs Research

3. Enterprise Environment
November 2002
Enterprise Environment
High volume of VoIP phone calls
Low latency needed
Data traffic
Many traffic streams, some with heavy load
High user density
Good statistical multiplexing capability needed for good voice-data convergence
M. Benveniste, Avaya Labs Research

4. EDCF-RR Mechanism TSPEC is used to set up a TS
November 2000
doc.: IEEE /375
November 2002
EDCF-RR Mechanism
TSPEC is used to set up a TS
The Short Inactivity Interval is used to drop inactive TID from polling list
The TSPEC is not cancelled due to WSTA short-term inactivity
Receipt of an ‘RR’ by the AP will cause the AP to resume polling of this
The ‘RR’ function will be achieved by an WSTA’s QoS null frame, which will use its own top-priority TC
A new frame is thus not needed for the ‘RR’ function
M. Benveniste, Avaya Labs Research
Mathilde Benveniste, AT&T Labs- Research

5. EDCF parameters for the ‘RR’
November 2000
doc.: IEEE /375
November 2002
EDCF parameters for the ‘RR’
The QoS null frame for the RR will have its own top-priority TC [i.e. the shortest AIFS]
The parameters for this TC would be set in the MIB
Suggested parameter values:
CWmin=8
Recommended differentiation:
PF=0.5 and CWmax=2
*For more detailed discussion see 02/594r1 and 01/409r2
M. Benveniste, Avaya Labs Research
Mathilde Benveniste, AT&T Labs- Research

6. EDCF-RR for HCF polling
November 2000
doc.: IEEE /375
November 2002
EDCF-RR for HCF polling
EDCF-RR enables statistical multiplexing of traffic
Less overhead lost to unanswered polls
More voice calls can be accommodated as a result
EDCF data can be sent during inactive periods
M. Benveniste, Avaya Labs Research
Mathilde Benveniste, AT&T Labs- Research

7. November 2000
doc.: IEEE /375
November 2002
Conclusions
To achieve enterprise performance goals, it is proposed that we:
Introduce EDCF/RR mechanism in 02/760 for polling-list management
Re-introduce persistence factors in the simplified form proposed in 409r2
M. Benveniste, Avaya Labs Research
Mathilde Benveniste, AT&T Labs- Research