User's Manual

Chapter 5 Wireless
B222s User’s Guide
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The following figure provides an exam ple of a wireless net work.
Figure 19 Exam ple of a Wireless Networ k
The wireless net work is the part in the blue circle. I n this wir eless net w ork, devices A and B use t he
access point ( AP) t o int eract wit h t he ot her devices ( such as t he printer) or with the I nt ernet . Your
LTE D ev i c e i s t h e AP.
Every wireless net work m ust follow these basic guidelines.
• Every device in t he sam e wireless network m ust use t he sam e SSI D.
The SSI D is t he nam e of t he wireless net work. I t st ands for Service Set I Dent ifier.
• I f t wo wireless net works overlap, they should use a different channel.
Like radio stat ions or television channels, each wireless net work uses a specific channel, or
frequency, t o send and receive inform at ion.
• Every device in t he sam e wireless network m ust use security com pat ible w it h t he AP.
• Securit y st ops unaut horized devices from using t he wireless net work. I t can also prot ect the
inform ation that is sent in t he wireless net work.
Radio Channels
I n t he radio spectrum , t here are cert ain frequency bands allocated for unlicensed, civilian use. For
the pur poses of wireless networking, t hese bands ar e divided int o num erous channels. This allows a
variet y of networ ks to exist in t he sam e place wit hout interfering wit h one anot her. When you
creat e a net work, you m ust select a channel to use.
Since the available unlicensed spectrum varies fr om one count ry t o anot her, the num ber of
available channels also var ies.
A channel is t he radio frequency( ies) used by wir eless devices t o t ransm it and receive data.
Channels available depend on your geographical area. You m ay have a choice of channels ( for your
region) so you should use a channel different from an adjacent AP ( access point ) t o reduce