Chapter 10: Smart Bandwidth Management; What Is Smart Bandwidth Management - Radwin 5000 HPMP User Manual

Chapter 10:
Smart Bandwidth
Management
What is Smart Bandwidth Management
Smart Bandwidth Management (SBM) enables busy links to utilize unused time slot resources
from relatively idle links. It applies to fixed and nomadic HSUs. It offers ‐
• Peak rates of over100% of assured static allocation for busy links
• Enhanced overall sector utilization
• Dynamic bandwidth allocation to maximize service provider throughput and adhere to
customer SLAs
To achieve best sector performance, each HSU is allocated separate uplink and downlink time
slots.
Downlink traffic is fully under HBS control, so that it can allocate any unused downlink time
slots whether allocated or not to a busy link. The busy link may operate at an extremely high
peak rates, 1000% utilization not being uncommon.
Uplink traffic is unpredictable. Again, in the case of a busy link with other links relatively idle,
the HBS will allocate extra uplink time slots to the busy link from free pool only. If all of the
uplink time slots are allocated, then SBM will not operate in the uplink direction.
The allocation of uplink and downlink time slots becomes a network policy issue. For
example, if all the HSUs provide regular internet service, it might be advisable to give each
one minimum time slots in both directions (subject to the 63 time slot maximum in each
direction) and allow traffic to dynamically determine time slot utilization. Alternatively, if the
HSUs are used for backhaul, the minimum number of time slots in either direction should be
allocated to meet defined service requirements (such as a SLAs).
The RADWIN Manager provides facilities to configure separate uplink and downlink time
slots. It further monitors performance, providing tabular and graphic utilization statistics.
RADWIN 5000 HPMP User Manual Release 3.5.70 10‐1