ZyXEL Communications MAX-207HW2, User Manual

Page: 83 / 180

Chapter 7 The WAN Configuration Screens
User’s Guide
84
The following table describes the labels in this screen.
Table 27 ADVANCED (
進階
) > WAN Configuration (WAN
設定
) > WiMAX
Configuration (WiMAX
設定
)
LABEL DESCRIPTION
Bandwidth &
Frequency (
頻寬
&
頻率
)
These fields show the downlink frequency settings in kilohertz (kHz).
Enter the width of a frequency band (only support 5MHz & 10MHz)
the WiMAX Modem can use for transmitting and receiving data.
Enter values in the Frequency (
頻率
) fields to have the WiMAX
Modem scan these frequencies for available channels in ascending
numerical order.
Contact your service provider for the bandwidth value and the
supported frequencies.
Network Access
Provider ID (
網路接
取提供者
ID)
Enter the primary (
主要的
) network access provider ID for the WAN
connection. You can also enter the substitude access provider IDs for
the connection backup when the primary one is down.
Base Station (
基地
台
)
Select ALU to connect this WiMAX Modem to an Alcatel-Lucent
WiMAX base station.
Select NEC to connect this WiMAX Modem to a NEC WiMAX base
station.
Enabling Functions
(
功能啟用
)
Select one or multiple check box(es) to enable the function(s).
Configure this according to what you were given by your service
provider.
• HARQ : Select this to enable the Hybrid Automatic Repeat-
Request feature on the WiMAX Modem. HARQ works in the
physical (PHY) layer and provides radio link error detection and
correction.
• ARQ : Select this to enable the Automatic Repeat-Request feature
on the WiMAX Modem. ARQ works in the MAC layer and provides
error correction by scheduling re-transmission.
Both HARQ and ARQ are designed to provide reliable transmission
over a wireless connection. When a receiver detects errors, it will
notify the sender to retransmit the data within a certain period.
• MIMO : Select this to enable the Multple Input Multiple Ouput
(MIMO) feature on the WiMAX Modem.
• Idle_Mode : Select this to have the WiMAX Modem enter the idle
mode after it has no traffic passing through for a pre-defined
period. Make sure your base station also supports this before
selecting this.
Apply (
套用
) Click to save your changes.
Reset (
重設
) Click to restore your previously saved settings.