Conceptronic C300BRS4 User Manual
Page 6
Conceptronic C300BRS4
User Manual
6
Radio Transmission
Wireless LAN devices use electromagnetic waves within a broad, unlicensed range of the radio
spectrum to transmit and receive radio signals. When a wireless access point is present, it becomes
a base station for the Wireless LAN nodes in its broadcast range. Wireless LAN nodes transmit digital
data using FM (frequency modulation) radio signals. Wireless LAN devices generate a carrier wave
and modulate this signal using various techniques. In this way, digital data can then be
superimposed onto the carrier signal. This radio signal carries data to Wireless LAN devices within
range of the transmitting device. The antennae of Wireless LAN devices listen for and receive the
signal.
Range
Range should not be a problem in most homes or small offices. If you experience low or no signal
strength in some areas, consider positioning the device in a location between the Wireless LAN
devices maintaining a roughly equal straight-line distance to all devices that need to access the
Wireless Broadband Router through the wireless interface. Adding more 802.11n access points to
rooms where the signal is weak can improve signal strength.
SSID
Wireless networks use an SSID (Service Set Identifier) to allow wireless devices to roam within the
range of the network. Wireless devices that wish to communicate with each other must use the
same SSID. Several Wireless Broadband Routers or access points can be set up using the same SSID so
that wireless stations can move from one location to another without losing connection to the
wireless network.
The Wireless Broadband Router operates in Infrastructure mode. It controls network access on the
wireless interface in its broadcast area. It will allow access to the wireless network to devices using
the correct SSID after a negotiation process takes place. The Conceptronic C300BRS4 broadcasts its
SSID so that any wireless station in range can learn the SSID and ask permission to associate with it.
Many wireless adapters are able to survey or scan the wireless environment for access points. An
access point in Infrastructure mode allows wireless devices to survey that network and select an
access point with which to associate.