What You Need; Getting Started - Radwin 5000 HPMP User Manual

What You Need

sector (by direct connection) at a given level, at sync time, it will acquire the existing param-
eters for that level.
A HMU must be able to send and receive service traffic while moving. To avoid service
"glitches" while switching between successive HBSs, the HBS hand-over time must be very
small. For RADWIN 5000 HPMP HBSs it is typically less than 500 ms, depending on selection
of Mobility channels.
A HMU detects that it is time to seek the next HBS when its rate drops below a predefined
minimum capacity threshold based on a minimum supported rate. The HBS chosen will be the
first found offering an RSS level above a minimum threshold (by default -60 dBm), which you
can configure for each HMU. If no HBS can be found satisfying the latter criterion, then the
HSU will sync with the HBS that has the highest RSS level (even though it is below the RSS
Threshold).
It is up to the Mobility Project RF planners to ensure that HBSs are spaced with coverage
overlap so that on the one hand the HSU RSS level does not fall so low that it loses synchro-
nization between HBSs and on the other hand, successive HBSs do not interfere with one
another.
In a Mobility project, it is fairly typical to use a fixed channel at each HBS and to have the
HSUs configured to use the group of channels used by the HBSs so as to minimize hand-over
time.
What You Need
The RADWIN 5000 HPMP Mobility products are different from the fixed/nomadic products.
They have different part numbers. Ensure that your HBS and HSUs as delivered are the Mobil-
ity models.
Each sector comes with a pre-installed operating band. You can change it in the usual way. If
you do ensure than each of the HSUs is changed. Alternatively (better), bring up the sector
as-is and change the band sector-wide.

Getting Started

We will create a sector with three HMUs. There is no difference in the log-on procedure to the
HBS. To avoid needless repetition and issues not really relevant to this chapter, we will start
out with the HBS and the HMUs set to there factory defaults except for the IP addresses. We
will maintain the IP addresses used in the previous chapters. In practice, the IP addresses of
sector element may well be configured using Direct or Local Connection prior to reproduction
of sector parameters from a "template" sector (such as we are creating) and most likely
before deployment in the field.
Further we will not make any use of the Map view in this chapter. Once again, in practice, a
Mobile system would be managed from a NOC using an enterprise standard NMS.
The Table view after logging on to the HBS looks like this:
RADWIN 5000 HPMP User Manual Release 3.3.30
Chapter 8
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