User's Manual

Chapter 3 - Operation and Administration Using the CLI Managing BSs
4Motion 637 System Manual
3.8.29 Managing Scheduler Parameters
Scheduling uncommitted traffic (above the maximum reserved rate) can be done
using one of the following options:
 Equal Time (ET) scheduling mode, in which air resources are being scheduled
in a fair manner proportional to the users' excess traffic (maximum sustained
rate - maximum reserved rate) SLAs.
 Equal Rate (ER) scheduling mode, in which air resources are allocated to users
aiming at ensuring data rate fairness between users proportional to their
excess traffic SLAs.
Assuming a sector with diversity (different channels conditions) of active users, ET
scheme enables higher aggregate sector throughput at the expense of data-rate
fairness among users, while ER scheduling scheme ensures maximum data-rate
fairness among users at the expense of lower aggregate sector throughput.
Using ER scheduling scheme exposes the system to excessive allocation of air
resources to highly active users having relatively poorer channel conditions. To
ensure data-rate fairness, more resources will to be allocated to these users
compared to users with relatively good channel conditions. The effect of a small
number of such users within the sector will be reflected by reduced aggregate
sector throughput as well as degradation of achievable rates for all users.
To protect against “abusing” users, an instantaneous rate threshold can be
defined within the scheduling scheme in which the amount of air resources for
users with continuous instantaneous rate below the threshold is being limited.
The more the abusing users' instantaneous rate is below the threshold, the more
resource allocations limitation is applied.
Display
Format
(for each
existing BS
if requested
for all BSs)
BSIDLSB :<value>
PagingGrpId :<value>
IdleModeMSInitiatedForUGS :<disable/enable>
Command
Modes
Global command mode