Patent ID: 7136647
Filing Date: 2006-11-14
Classification: H04W,Y02D

Abstract:
1. A decision method for inter-frequency hard handoffs in a WCDMA system, using an event-triggered reporting mode, and triggering events including: Event 2F having a triggering criteria where the signal quality on the current frequency point is higher than a certain threshold value, Event 2D having a triggering criteria where the signal quality on the current frequency point is lower than a certain threshold value, and Event 2A having a triggering criteria where the best frequency point changes, that is, where there is a non-current frequency point on which the signal quality is better than the signal quality on the current frequency point, the decision method comprising: querying, by a RNC (Radio Network Controller), specific conditions of a location where the a UE (user equipment) is, and performing inter-frequency measurements, specifying required measurement events to be 2F and 2D and relative parameters; sending, by the RNC measurement control commands to the UE, specifying the parameters that the UE is required to measure; receiving by the UE, the control commands and performing the measurement and evaluation, and reporting the measurement results when the triggering criteria for the required events are met; and receiving, by the RNC, the reported measurement results from the UE, and beginning to perform the actions according to the specific events reported by the UE and the RNC's specific decision and execution process.