Companies from all over the world have invested in spectrum and equipment to deliver
portable and/or mobile high bandwidth services to consumers and business alike.
Companies have made a clear decision to invest in licensed wireless access
technologies for the delivery of these services in order to guarantee quality of service.
WiMAX technology solves the last mile access problem, but how do you cost effectively
backhaul the traffic generated by these services?

The available spectrum for these applications is limited, depending upon the region of
operation. Typical area licensed WiMAX spectrum allocations are:

• Lower 700 MHz (US)
o 2 x 6 MHz channels
• 2.5 GHz (MMDS)
o 3 channel blocks totaling 15.5 MHz in US
o 72 MHz in Canada
• 3.5 GHz (WLL)
o 2 x 28 MHz channel blocks
• 5.8 GHz UNI (license exempt)
o 80 MHz allocation
o 50% to 75% of spectrum not available due to sharing or interference