User's Manual

RDL-3000 User Manual

Shorter scheduling cycles can provide lower latency:

DL latency: Avg. 0.5/ Max. 2 * Scheduling Cycle

UL latency: Avg. 0.5/ Max. 3 * Scheduling Cycle

Note: The effects of changes to the scheduling cycle will vary based aggregate traffic

composition (packet rate, packet size, etc).

Fixed Frame: Select the wireless frame mode.

Disabled ( ): RDL-3000 adjusts the wireless frame size dynamically based on uplink

and downlink traffic patterns.

Enabled ( ): Wireless frame size is fixed at the value specified in the Frame Size

field. Fixed frame mode must be used when using synchronization (collocated base

stations). The Fixed Frame size and Downlink Ratio must be identical for all

synchronized base stations operating in a geographical area. When fixed frame mode

is enabled, the PIR is limited as follows:

Max PIR = CIR * Scheduling Cycle / Frame Size

Frame Size [ms]: When Fixed Frame mode is selected, the frame size must be

specified (1 to 20 milliseconds).

Downlink Ratio [%]: (SC only) When Fixed Frame mode is selected, the proportion

of each frame reserved for downlink data must be specified (20-80 %).

Synchronization Mode: (SC only) When Fixed Frame mode is selected, the

synchronization mode must be specified.

None: Synchronization is disabled.

Internal: Transmissions are synchronized to the RDL-3000 internal clock. If a GPS

module is installed and synchronized to one or more satellites, transmissions are

synchronized to the module 1 PPS output.

External: Synchronize this unit to a 1 PPS signal received on the PPS port.

Synchronization Output: (SC only) When Fixed Frame mode is selected, the

synchronization output port (PPS) mode must be specified.

Disabled ( ):The PPS port is disabled.

Enabled ( ): The synchronization port output is active. The synchronization output

port (PPS) termination must be specified.

Synchronization Output Termination: (SC only) When the synchronization port

(PPS) output is enabled, the impedance must be specified. When collocated RDL-

3000 units have the PPS ports cabled together for synchronization, only the last RDL-

3000 in the daisy-chain should have the termination set to 50 or 75 ohms (based on

cable type). Refer to the RDL-3000 Installation Guidelines for more information.

None: Port termination is high impedance.

50 Ohms: Port termination impedance is 50 Ohms.

75 Ohms: Port termination impedance is 75 Ohms.

Radio Enable: Select the operational mode for the antenna system.

Off: RF Port 1 and RF port 2 radio transmitters are disabled (no RF output).

RF Port 1: The RF transmitter on RF Port 1 is enabled (RF port 2 is disabled).

RF Port 2: The RF transmitter on RF Port 2 is enabled (RF port 1 is disabled).

RF Port 1 & 2: The RF transmitter is operating in MIMO mode. Transmitting on port 1

and listening on ports 1 and 2.