Chapter 10 Hub Site Synchronization; What Is Hub Site Synchronization; Figure 10-1 I - Radwin 5000 HPMP User Manual

Hub Site Synchronization

What is Hub Site Synchronization?

When several radios are collocated at a common hub site, interference may occur from one
unit to another. RADWIN ODU units support the collocation of more than two units at a cen-
tral site. Like any other RF deployment, the wireless operation is highly dependent on factors
such as available frequencies, the physical spacing between radios, other interfering radios,
and whether WinLink 1000, RADWIN 2000 or RADWIN 5000 HPMP units are installed.
Note
The RADWIN Hub Site Synchronization (HSS) method uses a cable connected from the mas-
ter ODU to all collocated ODUs; this cable carries pulses sent to each ODU, which synchronize
their transmission with each other. The pulse synchronization ensures that transmission
occurs at the same time for all collocated units. This also results in all of the hub site units
receiving data at the same time, eliminating the possibility of interference that could result if
some units transmit while other units at the same location receive.
Figure 10-1 illustrates interference caused by non-synchronized collocated units.
Figure 10-1: Interference caused by collocated units
RADWIN 5000 HPMP User Manual
• HSS does not eliminate the need for careful RF planning to ensure
the design will work as planned. See
installation site survey.
• HSS support for RADWIN 5000 HBSs is model dependent
Release 3.3.30
Chapter 10
Chapter 2 for information on
10-1