User's Manual

Mobile WiMAX RAS SPI-2213 System Description/Ed.02

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 SPI-2213 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 SPI-2213, and the SPI-2213

creates and stores a file for each period.

Threshold Cross Alert (TCA) Control

The SPI-2213 defines under/over threshold for statistics. When a statistical value collected

at Bucket Interval (15, 30, and 60 minutes) is lower than the under threshold, it generates

an under TCA alarm. When the value is higher than the over threshold, it generates an over

TCA alarm. The alarms are reported to the WSM. TCA can enable or disable details of each

statistical group and set a threshold per severity.

IEEE 802.3ah

The SPI-2213 provides IEEE 802.3ah Ethernet OAM for a backhaul interface. Although

IEEE 802.3ah OAM pertains the PHY layer, it is located in the MAC layer so that it can be

applied to all IEEE 802.3 PHYs. It creates or processes 802.3ah OAM frames according to

the functions defined in the specification.

Ethernet OAM continuously monitors the connection between links at each end, and also

monitors discovery, remote loopback, and error packets which deliver important link events

such as Dying Gasp. It also includes a link monitoring function which delivers event

notification in the event of threshold errors, and a variable retrieval function for 802.3ah

standard MIB.

The SPI-2213 supports 802.3ah Ethernet OAM passive mode such as responding to

802.3ah OAM which is triggered in external active mode entities and loopback mode

operation, and sending event notification.

Integrity Check

The SPI-2213 proactively checks whether system configuration or operation information

(PLD) is in compliance with operator commands during system loading or operation, and

also checks whether system settings are OK and there is no problem with call processing. If

the result is not OK, it sends an alarm to the operator. That is, it checks whether system

configuration meets the minimum configuration conditions for call processing or whether

all operation information consists of valid values within an appropriate range. The result is

reported to the operator to help with correction of errors.