NetComm 3G27WV-02 User Manual page 41

OPTION
BG Protection Mode
Beacon Interval:
Data Beacon Rate (DTIM):
Fragment Threshold:
RTS Threshold:
TX Power:
Short Preamble
Short Slot
Tx Burst
Pkt_Aggregate
Country Code
AP Isolation:
MBSSID AP Isolation
BSSID
WiFi Multimedia
WMM Capable:
APSD Capable
DLS Capable
WMM Parameters:
Multicast-to-Unicast Converter
Multicast-to-Unicast
Others
HT TxStream
HT RxStream
HT Physical Mode
Operating Mode
Channel Bandwidth
Guard Interval
MCS
Reverse Direction Grant (RDG)
Aggregation MSDU (A-MSDU)
Auto Block ACK
Decline BA Request
Click Apply to save any changes you make to the settings.
NetComm Wireless 3G27WV-02 User Guide
41
A mechanism to enable the router to communicate with older legacy wireless network adapters that use 802.11b and
802.11g wireless protocols.
The interval of time in which the wireless router broadcasts a beacon which is used to synchronize the wireless network.
Enter a value between 1 and 255 for the Delivery Traffic Indication Message (DTIM). A DTIM is a countdown informing
clients of the next window for listening to broadcast and multicast messages.
This specifies the maximum size of a packet during the fragmentation of data to be transmitted. If you set this value too
low, it will result in bad performance.
When the packet size is smaller than the RTS threshold, the wireless router will not use the RTS/CTS mechanism to
send this packet.
This determines the transmit or output power of the broadcast wireless signal.
A radio preamble is a part of a datagram packet at the head of the Physical Layer Convergence Protocol (PLCP) to
increase throughput. Shortening the preamble reduces the size of the data packet increasing throughput. However not
all wireless network adapters are able to use this setting.
The amount of time the router waits after a packet collision before retransmitting the data packet. Enabling the short slot
reduces this time from 20ms to 9ms, therefore increasing overall throughput.
The Transmission Burst boosts the WLAN data packet throughput to maximise transmission rates according to the
wireless protocol being used. However this may increase the rate of dropped packets due to environmental factors such
as radio interference which can make the optimal wireless data packet transmission rate less than the maximum possible
transmission rate.
Packet Aggregation in IP networking is a function that concatenates multiple data packets into a single Transmission Unit
to reduce redundancy and network traffic overhead.
The Country Code option controls the wireless channels that the router can broadcast on, defined by each countries
wireless regulations.
This feature allows you to isolate clients on your wireless network. To enable communication between the wireless
clients connected to your NetComm Wireless 3G27WV-02 set this option to Disabled. To terminate the communication
between the wireless clients set this option to enabled.
The MBSSID AP Isolation function provides isolation among different SSIDs. When enabled this function prevents
wireless client terminals with different SSIDs from communicating with each other.
The Broadcast Service Set Identifier. Select 'Disabled' to hide the SSID of your NetComm Wireless 3G27WV-02. If
disabled, other people will not be able scan and detect this product's SSID.
The WMM (WiFi MultiMedia) option if enabled, supports QoS for experiencing better audio, video and voice in
applications.
The Automatic Power Save Delivery (APSD) is the foundation function for WMM Power Save technology and allows
wireless clients to request queued traffic any time instead of having to wait for the next wireless beacon frame. It may
have greater efficiency with lighter traffic loads such as voice. The feature is disabled by default and should only be used
by experienced administrators.
The Direct Link Setting (DLS) function allows all wireless client's data to be transmitted effectively. If DSL is enabled, the
wireless LAN router attempts to optimise the connection quality and data transmission rates of all connected wireless
clients. The feature is disabled by default and should only be used by experienced administrators.
Click on the WMM Configuration button to configure the WMM parameters.
This function converts multicast data to unicast data and is disabled by default.
This option sets the stream number that wireless antenna transmits.
This option sets the stream number that wireless antenna receives.
The options available for this field are Mixed Mode or Green Field. The default operation mode is Mixed Mode.
The channel bandwidth can be set to a mixed 20/40 MHz (the default value) giving an 802.11g connection speed of up
to 150 Mbps and an 802.11n connection speed of up to 300 Mbps. For legacy wireless adapters the Channel
Bandwidth can be set to 20 MHz slowing the connection speed for 802.11g and 802.11n to 54 Mbps and 74 Mbps
respectively as well as providing backward compatibility for older, slower 802.11b/g devices.
The guard interval is designed to help wireless clients minimise the effects of multipath delays. When you add a guard
time the back portion of useful signal time is copied and appended to the front. The options available for this field are
Long or Auto. The default setting is Auto.
The Modulation and Coding Scheme (MCS) function sets the modulation, coding and number of spatial channels. The
default MCS value is Auto.
The Reverse Direction Grant (RDG) function reduces the transmitted data packet collision rate by using the reverse
direction protocol. The RDG improves transmission performance and scalability in a wireless environment. By default the
RDG setting is enabled.
The MAC Service Data Unit (MSDU) Aggregation function wraps multiple ethernet frames bound for a common
destination in a single 802.11 frame. This reduces the number of required packet headers making the transmission more
efficient.
The 802.11n protocol uses the Auto Block ACK function for security of the data transmission. If a wireless client receives
a unicast A-MPDU (Aggregated MAC Packet Data Unit) frame, it should respond by sending back an ACK frame without
delay. A Block Acknowledgement reduces the number of the ACK frames while providing an individual
acknowledgement of each aggregated data frame.
The Decline BA Request function can be set to refuse block acknowledgement requests from wireless clients. Bydefault
this function is disabled.
Table 22 - Advanced View - Advanced WiFi Settings
DEFINITION
www.netcommwireless.com