Abis Resources Load-Triggered Half-Rate Assignment Algorithm:

Abis Resources Load-Triggered Half-Rate Assignment Algorithm:

After Flex Abis is enabled, the Abis interface transmission resources on the entire link are shared among all the BTSs. Therefore, the Abis resource load depends on the load of all the Abis interface connection links on the entire link.

2.    When the Abis Resource Adjustment TCHH Function Switch is set to Yes, the system allocates half-rate TCHs preferentially if the fixed Abis channel seizure ratio exceeds the Fix Abis Prior Choose Abis Load Thred(%) and the Flex Abis channel seizure ratio exceeds the Flex Abis Prior Choose Abis Load Thred(%).

3.   Make a comprehensive decision. The system make a comprehensive decision based on the Um interface resource load decision result and the Abis resource load decision result.

>>Assignment adjustment must be started if either of the decision results is preferential assignment of half-rate TCHs.

>>Assignment adjustment need not be started or loopback from half rate to full rate is triggered only when the two decision results are preferential assignment of full-rate TCHs.

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