Справочник Пользователя для Redline Communications Inc. AN100UXA
User
AN-100U/UX Base Station
Manual
70-00058-01-04
Proprietary Redline Communications © 2010
Page 73 of 136
April 19, 2010
Figure 33: Web: Admin Tools - Advanced Config - Burst Profile Settings
Noise Threshold: Enter the maximum noise threshold (-123 to -65 dBm).
If the measured noise (or interference) level exceeds this threshold, the base station
stops transmitting until the noise level is lower than this threshold. Refer to 1.4:
Deployment in the USA -- FCC Notices on page 13.
If the measured noise (or interference) level exceeds this threshold, the base station
stops transmitting until the noise level is lower than this threshold. Refer to 1.4:
Deployment in the USA -- FCC Notices on page 13.
Backoff
Specify ranging and contention periods.
Backoff settings are used when subscribers experience collisions during link
establishment and requesting additional bandwidth. When a subscriber detects a
collision, the following strategy is implemented to avoid further collisions.
establishment and requesting additional bandwidth. When a subscriber detects a
collision, the following strategy is implemented to avoid further collisions.
For example, the behavior would be as follows when using the default settings (
Ranging
Backoff Start = 2, Ranging Backoff end = 4
).
Following a collision, the subscriber will skip between zero and four registration
opportunities (2
opportunities (2
Ranging Backoff Start
). If the subscriber detects a collision during the retry, it will
skip a random number, between zero and eight registration opportunities (2
Ranging Backoff
Start+1
). If a third collision is experienced, the subscriber will skip between zero and
sixteen registration opportunities (2
Ranging Backoff End
). If a fourth collision is detected, the
process repeats as for the first detected collision.
It is recommended to use the default Backoff values, as changes to these settings can
severely impact performance of the wireless link. Click Default in the Advanced Config
menu to restore the factory backoff settings.
severely impact performance of the wireless link. Click Default in the Advanced Config
menu to restore the factory backoff settings.
Ranging Backoff Start: Enter the starting backoff window size for initial ranging
contention.
contention.
Ranging Backoff End: Enter the final backoff window size for initial ranging contention.
Request Backoff Start: Enter the starting backoff window size for contention during
bandwidth requests.
bandwidth requests.
Request Backoff End: Enter the final backoff window size for contention during
bandwidth requests.
bandwidth requests.