MP.11 and MP.11/a Quick Install Guide
Chapter 5. Web Interface
56
You can change the following parameters:
Interface Type
The interface type can be
Worp Satellite
or
Worp Base
. *See “Wireless Outdoor Router Protocol” on page
83.)
Base Station System Name
The name found on the system page of the Base Station to which this SU is connecting. This parameter can
be used as an added security measure, and when there are multiple Base Stations in the network and you
want an SU to register with only one when it may actually have adequate signal strength for either.
If the
Base Station System Name
is left blank on the SU, it can register with any Base Station with a
matching
Network Name
and
Network Secret
.
Network Name
A
Network Name
is name given to a network so that multiple networks can reuse the same frequency without
problems. An SU can only register to a base if it has the same
Network Name
. The
Network Name
is one of
the parameters that allow a Subscriber Unit to register on a Base Station. The
Base Station System Name
and
Frequency Channel
also are parameters to guide the SU to the proper Base Station on the network, but
they provide no security. Basic security is provided through encryption, as it causes none of the messages to
be sent in the clear. Further security is provided by mutual authentication of the Base Station and Subscriber
Unit using the
Network Secret
.
Dynamic Data Rate Selection (DDRS) Status (Tsunami MP.11/a only)
The WORP
Dynamic Data Rate Selection (DDRS)
lets the Base Station and SUs monitor the remote
average signal-to-noise ratio (SNR) and to adjust the data rate to an optimal value (to provide best possible
throughput) according to the current communication conditions during run-time.
Each frame received in the WORP protocol reports the signal and noise level in dBm at which the sender
received the previous frame from the receiver, and provides the values to calculate the signal to noise ratio
(SNR) in dB. SNR is calculated then averaged:
SNR [dB] = signal level [dBm] – noise level [dBm]
This information lets the sender adjust the transmission data rate to the optimal level to provide the best
possible throughput.
When you enable or disable WORP DDRS on the Base Station, the Base Station sends an announcement to
SUs and the SUs enable or disable WORP DDRS automatically.
Note:
DDRS threshold values must be configured in the Base Station and SUs separately.
Both the Base Station and the SU monitors the remote SNR. The Base Station monitors and calculates the
average remote SNR for each SU that is registered. An SU monitors and calculates the average remote SNR
for the Base Station.
The
DDRS Status
is configurable only for the
WORP Base Mode
. For
WORP Base Mode
, select the
DDRS
Status
“
Enable
” or “
Disable
” from the drop-down box provided.
For the
WORP Satellite Mode
,
DDRS Status
is read-only parameter and its value is based upon the
WORP
Base
to which this SU is associated.
WORP DDRS is not supported in Turbo Mode.
