Hirschmann BAT 11b, Руководство по управлению

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Configuration: Wireless Interface
73
BAT 11b
Release 1.0 03/04
• AP Distance
The AP distance is the size of the wireless cell and the number of
the clients contained. This value serves to optimize the roaming
behavior of the clients. The value can be set from 1 to 5. The
default value is 1. Higher values indicate a higher access point
density.
1: Large: Only one access point within reach
2: Medium
3: Small: Some access points within reach
4: Mini
5: Micro: Many access points within reach
• Multicast Rate
The multicast rate, i.e. the data rate at which multicast packets
are sent, should be configured in such a way that the multicasts
can be received by all subscribers located in the wireless cell. The
data rate for multicasts is set to a fixed value and therefore
depends on the properties of the wireless cell and its clients. In
the case of very small cells with clients whose radios support at
least 11 Mbps, it can be set to
Fixed 11 Mbps
. In the case of large
cells or cells with older clients which support merely 1 or 2 Mbps,
a slower rate of
Fixed 1 Mbps
or
Fixed 2 Mbps
is recommended.
The default value is Fixed 2 Mbps.
• Load Balancing
This setting refers to wireless networks with several access
points. Per default, load balancing is active. In this case, the
beacons of the access point transmit information on the logged-
on clients and the cell utilization of the access point in regular
intervals. A client can compare this information to the load
balancing information of other access points within reach and
decide independently whether roaming to a weaker access point
with less data traffic makes sense.
• Microwave Robustness
In environments with strong interferences caused by other
devices using the 2.4 GHz band, the data rate may be affected.
Although the activation of microwave robustness reduces the net
throughput in an interference-free environment, it may increase
the throughput in an environment with strong interferences,
since the packets are fragmented. This means that the packets
are split into small fragments which can be transmitted more