Alvarion BreezeMAX 3500 System Manual page 142

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Chapter 4 - Operation and Administration
The default Base Station ID is 186.190.0.0.0.0
ARQ Enable/Disable
The ARQ Enable/Disable parameter controls whether to use an ARQ
algorithm for detecting errors and requesting retra
unicast messages (appl
The default is Disable.
Maximum Cell Radius
The Maximum Cell Radius is used to adapt various timing parameters of t
MAC to the time it takes a message to reach its destination. This time delay
dependent upon the distance between the
timing para
determi
it.
NOTE
For Non-Line-Of-Sight (NLOS) links using refractions, the cell distance should be higher than the
line-of-sight distance. Typically a 10% margin is a good estimate for the increase in distance due to
the NLOS operation.
The basic time element (symbol) used by the system is 68 microseconds. This
symbol size is translate
cell radius of 10 km. Thus, it is recommended to set the Maximum Cell
Radius using a resolution of 10 km: the actual timing of the system is the
same for any ce
(N+1)*10.
NOTE
An SU located at a distance larger than the Maximum Cell Radius will be rejected during the
network entry process.
The values range is from 10 to 100 km. Use 10 km increments (10, 20, 30,
....100).
The default is 20 km.
4.8.4.3.2
Phy Parameters
The AU Phy Parameters menu inc
4.8.4.3.2.1
Show
Select this option to view the current values/options of the Phy (Physical Layer)
parameters. The radio band of the ODU is also displayed when an AU-IDU
connected to an AU-ODU is installed in the slot.
122
icable only for Best Effort and Non Real Time services).
meters should be adapted to the largest expected delay, which is
ned from the distance from the AU/ µBST of the farthest SU served by
d to a round trip delay of approximately 20 km, or a
ll radius larger than N*10 km and smaller than or equal to
nsmissions of applicable
originating and receiving units. The
ludes the following options:
he
BreezeMAX System Manual
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