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Cisco Wireless Foundations, *cochannel interference - Coggle Diagram
Cisco Wireless Foundations
Wireless Topologies
Wireless Personal Area Network
<5-10 m
Wireless LAN
<100 m
Wireless Metropolitan Area Network
100 m
Piconets
Bluetooth
Range: < 5 - 10 m
Frequency: 2.402 - 2.480
Rate: 24 Mbps
IEEE 802.15.1 (1998)
Power
Class 1: 100 mW
Class 2: 2.5 mW
Class 3: 1 mW
Bluetooth Low Energy (BLE)
iBeacon
Apple implementation of BLE
Near Field Communication (NFC)
Range: 10 cm
Power passive tags (96 - 4096 bytes)
ZigBee
Based on IEEE 802.15.4
Used in home automation and factory floor sensors
868Mhz (Europe), 915MHz (USA), 2.4GHz (WW)
Rate: 20,40, 250 Kbps
Network: Coordinator, full-function, reduced-function devices
Modes: Beacon, Non-Beacon
Maximum Power: 100 mW
6LoWPAN
IPv5 IoT communications
IPv6 over IEE 802.15.4
Header compression and IPv6 datagram fragmentation
Wi-Fi Direct
Networks
Ad Hoc Networks
When two wireless devices communicate
IBSS:
Area within a computer can be reached
Half-Duplex
Infrastructure Mode
BSA: Basic Service Area
A wireless cell or coverage
BSS: Basic Service Set
ESS: Extended Service Set
APs should be in different frequency or channel
Service Set Identifier (SSID)
32 ASCII Character
BSSID:
MAC address associated with an SSID
MBSSIDs:
Virtual APs
Modes: Broadcast, Hidden
Interference
Cordless Phones
900 MHz, 1800-1900 MHz, 2.4, 5, 1.9 GHz
ISDN Layer 2: LAPD
ISDN Signaling: Q.931
Microwaves, Wireless Phones, Game Controller, Lights, Motion Detectors, etc
*cochannel interference