2-10
RedMAX Administration and Maintenance Guide
Redline Communications Inc. Confidential and Proprietary
Verifying fixed WiMAX performance requires that you monitor and record many different
parameters including:
•
Channel Power (RSSI)—measures the average time domain power within the selected
bandwidth and is expressed in dBm.
•
Occupied Bandwidth (BW)—calculated as the bandwidth containing 99% of the
transmitted power in the given RF span.
•
Carrier Frequency—the measured frequency of the received signal. It is equal to the
specified frequency plus the Frequency Error described above.
•
Base Station ID—Each transmitter has a unique ID. BTS Master displays it as Base
Station ID by decoding the Frame Control Header (FCH) part of the downlink frame.
•
Adjacent Subcarrier Flatness Peak—the absolute difference between adjacent
subcarriers.
Using the Ping Utility
The most basic tool available for verifying network connectivity is the ping utility. There are
a few parameters that are frequently used during RedMAX maintenance and
troubleshooting.
The following information applies to ping as implemented on a Windows platform. Details
may differ slightly for other operating systems.
Step 1
Open a console window on the PC behind the subscriber unit:
Start > Programs > Accessories > Command Prompt
Step 2
In the console window enter the following co mm an dr:
ping <
IP Address
>
where <IP address> is the address of the destination device
Step 3
Review the results. The output should resemble the following:
Example 2-1
ping Output
Reply from 192.168.101.3: bytes=32 time=3ms TTL=30
Reply from 192.168.101.3: bytes=32 time=3ms TTL=30
Reply from 192.168.101.3: bytes=32 time=3ms TTL=30
Reply from 192.168.101.3: bytes=32 time=3ms TTL=30
Ping statistics for 192.168.101.3:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in subscriber unit -seconds:
Minimum = 3ms, Maximum = 3ms, Average = 3ms