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Dhanalakshmi College of Engineering EC2043
–
Wireless Networks
Prepared by A.Devasena Asso.Prof., S.Esther GandhiMathi Asso.Prof., Page 9
2. List the properties of ISM band? The properties of ISM band a) Frequency of operation i) 902-928 MHZ ii) 2.4-2.483 GHZ iii) 5.725-5.875 GHZ b) Transmit power limitation i) 1 watt for DSSS and ii) Low power with any modulation for FHSS.
3. List the three basic rules (or) etiquette of spectrum. The three basic rules (or) etiquette of spectrum are a)Listen Before Talk (or Transmit) b) Low Transmit Power c) Restricted duration of transmission
4. List the features of wireless LAN.
T
he features of wireless LAN are (a) Power management to save the battery power. (b) The handling of hidden nodes. (c) The ability to operate worldwide.
5. Draw the frame format of IEEE 802.11 physical layer using FHSS. The frame format of IEEE 802.11 physical layer using FHSS are Sync (80) SFD (16) PLW (12) PSF (4) HEC (16) MPDU variable SFD –
Start Frame Delimiter PLW- PDU Length Word PSF – PLCP Signalling Field HEC – Header Error Check MPDU – MAC Protocol Data Unit
6. Draw the frame format of IEEE 802.11 physical layer using DSSS. The frame format of IEEE 802.11 physical layer using DSSS
Sync 128 bits SFD (16) Signal (8) Service (8) Length (16) HEC (16) MPDU variable
Dhanalakshmi College of Engineering EC2043
–
Wireless Networks
Prepared by A.Devasena Asso.Prof., S.Esther GandhiMathi Asso.Prof., Page 10
7. List the type of architecture used in IEEE 802.11 The type of architecture used in IEEE 802.11
(a)
Infrastructure based. (b) Ad-hoc based.
8. What are the characteristics of DSSS?
T
Dhanalakshmi College of Engineering EC2043
–
Wireless Networks
Prepared by A.Devasena Asso.Prof., S.Esther GandhiMathi Asso.Prof., Page 9
2. List the properties of ISM band? The properties of ISM band a) Frequency of operation i) 902-928 MHZ ii) 2.4-2.483 GHZ iii) 5.725-5.875 GHZ b) Transmit power limitation i) 1 watt for DSSS and ii) Low power with any modulation for FHSS.
3. List the three basic rules (or) etiquette of spectrum. The three basic rules (or) etiquette of spectrum are a)Listen Before Talk (or Transmit) b) Low Transmit Power c) Restricted duration of transmission
4. List the features of wireless LAN.
T
he features of wireless LAN are (a) Power management to save the battery power. (b) The handling of hidden nodes. (c) The ability to operate worldwide.
5. Draw the frame format of IEEE 802.11 physical layer using FHSS. The frame format of IEEE 802.11 physical layer using FHSS are Sync (80) SFD (16) PLW (12) PSF (4) HEC (16) MPDU variable SFD –
Start Frame Delimiter PLW- PDU Length Word PSF – PLCP Signalling Field HEC – Header Error Check MPDU – MAC Protocol Data Unit
6. Draw the frame format of IEEE 802.11 physical layer using DSSS. The frame format of IEEE 802.11 physical layer using DSSS
Sync 128 bits SFD (16) Signal (8) Service (8) Length (16) HEC (16) MPDU variable
Dhanalakshmi College of Engineering EC2043
–
Wireless Networks
Prepared by A.Devasena Asso.Prof., S.Esther GandhiMathi Asso.Prof., Page 10
7. List the type of architecture used in IEEE 802.11 The type of architecture used in IEEE 802.11
(a)
Infrastructure based. (b) Ad-hoc based.
8. What are the characteristics of DSSS?
T