User`s guide

Chapter 20 The Status Screen
User’s Guide
205
WiMAX State This field displays the status of the WiMAX Modem’s current connection.
• INIT: the WiMAX Modem is starting up.
• DL_SYN: The WiMAX Modem is unable to connect to a base station.
• RANGING: the WiMAX Modem and the base station are transmitting and
receiving information about the distance between them. Ranging allows the
WiMAX Modem to use a lower transmission power level when communicating
with a nearby base station, and a higher transmission power level when
communicating with a distant base station.
• CAP_NEGO: the WiMAX Modem and the base station are exchanging
information about their capabilities.
• AUTH: the WiMAX Modem and the base station are exchanging security
information.
• REGIST: the WiMAX Modem is registering with a RADIUS server.
• OPERATIONAL: the WiMAX Modem has successfully registered with the
base station. Traffic can now flow between the WiMAX Modem and the base
station.
• IDLE: the WiMAX Modem is in power saving mode, but can connect when a
base station alerts it that there is traffic waiting.
Bandwidth This field shows the size of the bandwidth step the WiMAX Modem uses to
connect to a base station in megahertz (MHz).
CINR mean This field shows the average Carrier to Interference plus Noise Ratio of the current
connection. This value is an indication of overall radio signal quality. A higher
value indicates a higher signal quality, and a lower value indicates a lower signal
quality.
CINR deviation This field shows the amount of change in the CINR level. This value is an
indication of radio signal stability. A lower number indicates a more stable signal,
and a higher number indicates a less stable signal.
RSSI This field shows the Received Signal Strength Indication. This value is a
measurement of overall radio signal strength. A higher RSSI level indicates a
stronger signal, and a lower RSSI level indicates a weaker signal.
A strong signal does not necessarily indicate a good signal: a strong signal may
have a low signal-to-noise ratio (SNR).
UL Data Rate This field shows the number of data packets uploaded from the WiMAX Modem to
the base station each second.
DL Data Rate This field shows the number of data packets downloaded to the WiMAX Modem
from the base station each second.
PER This field shows the Packet Error Rate. The PER is the percentage of data
packets transmitted across the network but not successfully received.
Tx Power This field shows the output transmission (Tx) level of the WiMAX Modem.
System Status
System Uptime This field displays how long the WiMAX Modem has been running since it last
started up. The WiMAX Modem starts up when you plug it in, when you restart it
(ADVANCED > System Configuration > Restart), or when you reset it.
Current Date/
Time
This field displays the current date and time in the WiMAX Modem. You can
change this in SETUP > Time Setting.
CPU Usage This field displays what percentage of the WiMAX Modem’s processing ability is
currently being used. The higher the CPU usage, the more likely the WiMAX
Modem is to slow down. You can reduce this by disabling some services, such as
DHCP, NAT, or content filtering.
Table 101 Status (continued)
LABEL DESCRIPTION