Editing Wi-Fi hotspot (section)

==Billing==
{| class="wikitable" style="margin: 1em auto 1em auto;"
|+ EDCF user-priority list
! colspan=2 rowspan=3 | &nbsp;
! colspan=6 | Net traffic
|-
! colspan=3 | low
! colspan=3 | high
|-
! Audio
! Video
! Data
! Audio
! Video
! Data
|-
! rowspan="2" style="width:160px;"| User needs
! width=160 | time-critical
| align=center | 7
| align=center | 5
| align=center | 0
| align=center | 6
| align=center | 4
| align=center | 0
|-
! not time-critical
| align=center | -
| align=center | -
| align=center | 2
| align=center | -
| align=center | -
| align=center | 2
|}

The "user-fairness model" is a dynamic billing model, which allows volume-based billing, charged only by the amount of payload (data, video, audio). Moreover, the tariff is classified by net traffic and user needs.<ref name=pommer>{{cite book |last=Pommer |first=hermann |date=2008-03-25 |title=Roaming zwischen Wireless Local Area Networks |location=Saarbrücken|publisher= [[VDM Publishing|VDM Verlag]]|isbn=978-3-8364-8708-5 }}</ref>{{citation needed|date=February 2017}}

If the net traffic increases, then the user has to pay the next higher tariff class. The user can be prompted to confirm that they want to continue the session in the higher traffic class.{{Dubious|date = November 2015|reason = Sentence is poorly written and should either be removed or edited. See comment in 'Weird sentence' section of the Talk Page.}} A higher class fare can also be charged for delay sensitive applications such as video and audio, versus non time-critical applications such as reading Web pages and sending e-mail.

{| class="wikitable" style="margin: 1em auto 1em auto;"
|+ Tariff classes of the user-fairness model
! colspan=2 rowspan=2 | &nbsp;
! colspan=2 | Net traffic
|-
! width=160 | low
! width=160 | high
|-
! rowspan="2" style="width:160px;"| User needs
! width=160 | time-critical
| align=center | standard
| align=center | exclusive
|-
! not time-critical
| align=center | low priced
| align=center | standard
|}

The "User-fairness model" can be implemented with the help of EDCF (IEEE 802.11e). An EDCF user priority list shares the traffic in 3 access categories (data, video, audio) and user priorities (UP).<ref name = pommer/>

* Data  [UP 0|2]
* Video [UP 5|4]
* Audio [UP 7|6]

See [[Service-oriented provisioning]] for viable implementations.