Samsung Mobile WiMAX Outdoor RAS SPI-2331, Описание системы

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CHAPTER 2. Overview of Outdoor SPI-2331
2-10 © SAMSUNG Electronics Co., Ltd.
In package upgrade, the service is stopped temporarily because the old process is terminated
and the new process is started in the ‘Change to New package’ stage.
However, since OS is not restarted, the service will be provided again within a few minutes.
After upgrading software, the outdoor SPI-2331 updates the package stored in a volatile storage.
In addition, the outdoor SPI-2331 can re-perform the ‘Change to New package’ stage to
roll back into the previous package before upgrade.
Call Trace Function
The outdoor SPI-2331 supports the call trace function for a specific MS. The outdoor SPI-
2331 can carry out the call trace function up to 10 MSs. If a call occurs in the MS that an
operator previously specified via ACR, the signaling message and statistical traffic data are
transmitted to WSM. Besides, the outdoor SPI-2331, also, sends the RF environment
information, such as Carrier-to-Interference-and-Noise-Ratio(CINR) for MS, Modulation
and Coding Schemes(MCS) level and Burst Error Rate(BER).
Detailed Information for Each Session and Service Flow (PSMR/PSFMR)
The Mobile WiMAX system of Samsung collects and stores detailed information of all
sessions(Per Session Measurement Record, PSMR) and detailed information of all service
flows(Per Service Flow Measurement Record, PSFMR) to provide it to an external log
server. When a session or service flow is created, the Mobile WiMAX system starts to
collect relevant information, and when the session or service flow terminates, the system
creates and stores a message in a file so that the external log server can collect the message.
The information collected by the ACR includes session termination time, initial and final
handover information(handover types, cell information), and the MAC address and IP
address allocated to the MS. The outdoor SPI-2331 collects such information as MS MAC
addresses, continued session time, continued service flow time, turnaround time for
network entry, CID, SFID, initial and final wireless quality information(RSSI, CINR, Tx
power), and throughput information.
The ACR deliver the information collected by ACR to the outdoor SPI-2331, and the
outdoor SPI-2331 creates and stores a file for each period.
2.2.6 Function of Supporting the Outdoor Environment
The outdoor SPI-2331 senses and controls the temperature inside the system, collects and
reports the environmental alarms to operate normally in the outdoor environment.
The outdoor SPI-2331 has a natural air convection system without a fan to optimize air
flow. Therefore, its low power consumption is suitable for use outdoors.