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CHAPTER 3. Outdoor SPI-2331 Architecture
3.2 Detailed Structure
The main functions and capacity of outdoor SPI-2331 are as follows:
Main Functions
Fast Ethernet interface with ACR
Creation and distribution of the network synchronization clock
Wireless signal sending/receiving function
Modulation/demodulation signal processing for packet traffic signal
Packet scheduling function(Efficient use of wireless resources and QoS guarantee)
Wireless bandwidth allocation function
ARQ function
Ranging function
System information transfer
Control of packet call connection setup/maintenance/release
Handover function
System operation and maintenance function
Capacity
Provides max. 2 Fast Ethernet connections per system
100 mW output power per transmission path
MIMO support
The outdoor SPI-2331 is configured as shown in the figure below:
Board
Quantity
Name
(Sheet)
ULDB
ULRB
3-2
1
U-RAS Light series-3 Digital Board
- System main processor
- A channel card processing user data traffic. MIMO(2Tx/2Rx) support.
- OFDMA channel processing
- 10/100BASE-TX 2 ports or 100BASE-FX 2 ports provided
- Reception of the GPS signal and creation and supply of the clock
- Debug interface(RS-232C) provided
- LED(power/status, GPS, backhaul) interface provided
1
U-RAS Light series-3 RF Board
- Transceiver function
Tx path: converts the baseband signal into RF signal
Rx path: converts the RF signal into baseband signal
Function
© SAMSUNG Electronics Co., Ltd.
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