CQI Reporting Principle

From HSDPA System Architecture & Protocols 2002

Power CAC Algorithm

~Algorithm 1 (ALGORITHM_FIRST): based on UL/DL load measurement and load prediction (RTWP and TCP)
-admission decision based on predicted load increment upon admission of a new service-Based on the current cell load (indicated by the uplink load factor and downlink TCP) and the predicted load increment due to admission of the new service, the RNC determines whether the cell load will exceed the threshold upon admitting the new service. If yes, the RNC rejects the access request. If not, the RNC accepts the access request.

~Algorithm 2 (ALGORITHM_SECOND): based on Equivalent Number of User (ENU)
admission decision based on the ENU
-Depending on the current ENU and the access request, the RNC determines whether the ENU will exceed the threshold upon admitting a new service. If yes, the RNC rejects the request. If not, the RNC accepts the request.

~Algorithm 3 (ALGORITHM_THIRD): loose call admission control algorithm
-admission decision based on no load increment upon admission of a new service
-This algorithm assumes that load increment upon admission of a new service is 0. Based on the current cell load (indicated by the uplink load factor and downlink TCP), the RNC determines whether the cell load will exceed the threshold upon admitting the new service. If yes, the RNC rejects the access request. If not, the RNC accepts the access request.