User's Manual

BST/AU ID Parameters Menu
BreezeMAX CPEs Product Manual 89
4.6 BST/AU ID Parameters Menu
Each AU (logical sector) in the network is configured with a unique ID comprising
an Operator ID, Cell ID and Sector ID. The BST/AU ID parameters in the SU
define the Base Station(s)/AU(s) that can synchronize with the SU. These
parameters include the base BST/AU ID and the BST/AU ID Mask. The SU can
synchronize only with AUs with a Base Station ID that is included in the IDs
range defined by the applicable parameters in the SU.
When the Best BST/AU Support is disabled, the SU will start searching for
available AUs in the range defined by the BST/AU ID and BST/AU ID Mask, and
will try to connect to the first found AU whose Base Station ID is in the defined
range.
An SU that can communicate with more than one BST/AU may become
associated with the first BST/AU it "finds", not necessarily the best choice in
terms of quality of communication. Changes in base station deployment and
subscriber density can accumulate to create substantial changes in SU
performance. The quest for load sharing together with the desire to create best
throughput conditions for the SU created the need for the Best BST/AU feature,
to enable an SU to connect to the best BST/AU in its neighborhood.
When the Best BST/AU feature is enabled, the SU scans all BSTs/AUs in a
predefined range, Each of the BSTs/AUs with which the SU can communicate
(perform initial phase of network entry) is given a quality mark based on the
quality of the signal at which it is received by the SU. At the end of the scanning
period, the SU reaches a Best BST/AU decision according to the information
gathered. The BST/AU with the highest quality mark is selected as the Best
BST/AU, and the SU will immediately try to associate with it at the relevant
frequency.
The range used for scanning is defined by the BST/AU ID and BST/AU ID Mask
parameters. The initial range can be limited by defining a preferred range of
BST/AUs, and selecting the best BST/AU in the preferred range. If no BST/AU is
found in the preferred range, the SU will scan the entire range.
The BST/AU ID Parameters menu includes the following options:
 Show
 BST/AU ID
 BST/AU ID Mask