User's Manual

CHAPTER 3. SPI-2213 Architecture

3-6

The DMB is configured as shown in the figure below:

Figure 3.3 DMB Configuration

Board

Name

Quantity

(Sheet)

Function

MBB-F 1 Mobile WiMAX base station Backplane Board-Flexible

- DMB backboard

- Signal routing function for traffic, control signal, clock, power, etc.

MMA-G 1 Mobile WiMAX base station Main control board Assembly-General

- Main system processor

- Call processing, resource allocation and OAM

- Reception of the GPS signal and creation and supply of the clock

- Alarm collection and report to the upper

- Supports FE/GE interface with ACR

- Non-volatile memory support

MRA-F Max. 6 Mobile WiMAX base station RAS board Assembly-Flexible

- Subscriber data traffic processing

- OFDMA Processing

- 1Carrier/1Sector MIMO or 4T4R with CDD

- ‘Digital I/Q and C & M’ data formatting

- Supporting optical interfacing with the RRH (E/O, O/E conversion)

- Supporting loopback tests between the DU and the RRH

MEI-B 1 Mobile WiMAX base station External Interface board assembly-Basic

- Provides User Defined Alarm (UDA)

- Alarm monitoring including fan alarm/high temperature

DMB

MRA-F(5)

MRA-F(4)

MRA-F(3)

MRA-F(2)

MRA-F(1)

MRA-F(0)

MMA-G

MEI-B

DMB