User's Manual

Mobile WiMAX RAS SPI-2213 System Description

CHAPTER 5. Additional Functions

and Tools

5.1 RET

The SPI-2213 can support the RET function by connecting an antenna with an AISG 2.0

interface and an RRH with an AISG 2.0 interface.

To provide the RET function, the SPI-2213 sends and receives control messages to and from

the WSM through the RET controller within the RRH (AISG2.0 interface), MRA-F (Digital

I/Q and C & M: Optic) and RET controller of MMA-G. By using this path, the WSM can

carry out the RET function that controls the antenna tilting angle remotely.

In addition, for the RET operation, the RRH provides power to every antenna connected to it.

Figure 5.1 RET Interface

MMA-G

WSM

(SNMP Manager)

MRA-F #0

MRA-F #1

MRA-F #5

RET Relay

RRH#0

RRH#1

RRH#2

Digital I/Q

and C & M

Antenna (RET Motor)

ntenna (AISG interface)

RS-485

and

Power

SPI-2213

RET Relay

RET

Controlle