Intelligent IRAT Handover Requests

摘要

Devices and methods for intelligent handover requests and management are disclosed. IRAT handover failure can be prevented by ensuring that user equipment (UE) is asked to handover to a target cell that it has already measured, and that resource allocation in the base station sub-system (BSS) is made in the correct cell. For instance, a radio network controller (RNC) can maintain cell identification and corresponding node information when an updated measurement control message is sent to the UE. According to certain aspects, a relocation cancellation message can be sent from an RNC to a mobile switching center (MSC) if a new measurement report, such as a 3a report, is received by the RNC.

主权项

1. A method for requesting handover of a user equipment (UE) in a network, comprising:
sending, from a radio network controller (RNC), a first measurement control message to said UE that associates a plurality of cell identifiers with corresponding node identification information; receiving, at said RNC, a first measurement report from said UE that includes a selected cell identifier from said plurality of cell identifiers, which is associated with selected node identification information; generating a cell identification list that associates one or more of said plurality of cell identifiers with updated node identification information and maintains the selected node identification information associated with said selected cell identifier; sending, from said RNC, a second measurement control message to said UE based on said cell identification list; and after sending said second measurement control message and before receiving a second measurement report from the UE, sending from said RNC, a relocation required message to said MSC, wherein said relocation required message includes one or more of said selected cell identifier and said selected node identification information.