Capa Fisica Enlace de Datos Subcapa MAC

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Enlace de Datos
802.2 LLC
802.3
802.5
802.11
MAC
MAC
802.11 MAC
PHY
PHY
Subcapa MAC
FHSS
DSSS
PHY
PHY Capa Fisica
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BSS3
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Router
Internet
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frames diferidos
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31 slots
Intento inicial
Frame
Previo
DIFS
1º retransmision
Frame
Previo
DIFS
63 slots
2ª retransmision
Frame
Previo
DIFS
127 slots
3ª retransmision
Frame
Previo
DIFS
255 slots
4º retransmision
Frame
Previo
DIFS
511 slots
5ª retransmision
Frame
Previo
DIFS
Ventana de contencion=1,023 slots
6ª retransmision
Frame
Previo
DIFS
Ventana de coneccion=1,023 slots
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11
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Tiempo
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Frecuencia
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MLME
MAC MIB
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Beacon
AP 1
AP 2
Cliente
BSS encontradas:
BSS 1, AP 1
BSS 2, AP 2
BSS 3, AP 3
AP 3
AP 4
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AP 2
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time
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SIFS
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ACK
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1: Association request
2: Association response
"Here is your association ID"
AP
3: Traffic
Client
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3: IAPP
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1: Reassociation request
"My old AP was.."
2: Reassociation response
"I am your new AP, and here is
your new association ID."
Client
New AP
5: (optional)
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buffered from your old AP."
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4: IAPP
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