User's Manual

Chapter 3 - Operation and AdministrationBS Menu
Chapter 3: Operation and Administration
BS Menu
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BreezeCOMPACT System ManualBreezeCOMPACT System Manual
78
The table below describes the DL:UL ratio as a function of BS Bandwidth and Total Uplink Duration.
* DL:UL Ratio 35:12: Not tested as part of R5.0.
3.7.2.2.3 DL Diversity Mode
The DL Diversity Mode option includes the DL Diversity Mode parameter. In the current release, only Matrix A or B is
supported.
In MIMO Matrix A or B mode, the system can use either MIMO Matrix A or MIMO Matrix B. The selection between
Matrix A and Matrix B is performed automatically for each MS according to link conditions and supported MS capabilities,
as follows:
 MIMO Matrix A for Coverage Gain: In a configuration with multiple transmit/receive antennas, a single data stream is
transmitted in parallel over multiple paths. A mathematical algorithm known as Space Time Codes (STC) is used to
encode the data streams to make them orthogonal to each other. This improves the signal-to-noise ratio at the receiver
side, resulting in increased range and better throughput for subscribers that are difficult to reach (for example, deep
indoors).
 MIMO Matrix B for Increased Capacity: This flavor of MIMO, also known as Spatial Multiplexing MIMO
(SM-MIMO), sends an independent data stream over each antenna. Thus, when signal conditions are good, the data rate
is increased and in excellent conditions may be doubled.
3.7.2.3 Mobility
The Mobility menu enables you to view/update the value configured for the parameter described below.
3.7.2.3.1 Deployment
The type of deployment in the area served by the BS: Fix or Mobile. To support proper handover, this value should be set to
Fix only if mobile MSs are not expected. The default is Fix.
A change in the Deployment parameter takes effect after the next reset.
3.7.2.4 Power Control
The Power Control menu enables you to view/update the values configured for the following parameters:
 Target Ni
 Allowed Interference Level
Table 19: DL:UL Ratios
BS Bandwidth (MHz) Total Uplink Duration (Slots) DL:UL Ratio
5/10 4 35:12*
5 32:15
6 29:18
7 MHz 3 24:9
4 21:12