User Manual

Chapter 3 - Operation and Administration of the Macro BTS Managing BSs
4Motion 563 System Manual
 Downlink Diversity (refer to Section 3.9.12.2.3)
 Uplink Feedback Zone (refer to Section 3.9.12.2.4)
 Downlink Data Zone (refer to Section 3.9.12.2.5)
 Uplink Data Zone (refer to Section 3.9.12.2.6)
 Mimo (refer to Section 3.9.12.2.7)
3.9.12.2.1 Configuring Airframe General Parameters
To configure the Airframe General parameters, run the following command:
npu(config-bs-66053-airframe)# general [cell-id <(0 to 31 StepSize 1)>]
[preamble-grp <(1 to 2 StepSize 1)>] [segment <(0 to 2 StepSize 1)>] [frame-offset
<zero|random>] [ul-duration <(3 to 7 StepSize 1 | 10 to 10 StepSize1)>]
[nbr-beam-forming {yes | no} ]
Neighbor BS Beam Forming (nbr-beam-forming): Applicable only for unit
operating in MIMO Matrix A or B mode. The beam forming mechanism is based on
symmetry in performance between uplink and down link. To compensate for
possible differences due to HW of the ODU, a special low-level calibration signal is
transmitted periodically in each link. During the time this calibration signal is
transmitted all other radio links of the same BS and all its neighbors should not
transmit, to reduce potential interference. The Beam Forming mechanism ensures
that all neighboring BSs operating in Beam Forming mode will enter into silent
mode when necessary. A unit operating in Matrix A or B mode should enter into
silent mode when necessary (based on frame number information) only if it has
neigboring BSs operating in Beam Forming mode.
IMPORTANT
After completing the Airframe configuration, do not forget to execute the apply command before
exiting the Airframe configuration mode:
npu(config-bs-66053-airframe)# apply
IMPORTANT
When creating a new BS, all mandatory Neighbor BS General parameters must be configured.