Method and system for reporting terminal measurement and inter-operating between systems

A method for inter-system interoperation, comprising:

• configuring, by an access device of a source system, a terminal with measurement configuration information when determining that the terminal is to switch to a target system, wherein the measurement configuration information comprises at least two frequencies/cells on at least two frequencies of the target system and a measurement result reporting scheme;
• sending, by the access device of the source system, the measurement configuration information to the terminal, and receiving measurement results reported simultaneously in a measurement report message by the terminal;
• and
• determining, by the access device of the source system, a primary cell and a secondary cell of the target system to which a handover is to be performed according to the measurement results, and instructing the terminal to switch to the primary cell and the secondary cell of the target system;
• wherein the source and the target system are systems of different Radio Access Technologies, and wherein reporting the measurement results to the access device of the source system specifically comprises reporting measurement reports of cells with the strongest channel quality on each of additional measurement frequencies related to one of the frequencies which triggers a measurement report to the access device of the source system when determining that the one of the frequencies is configured with additional measurement and a cell on the frequency triggers a measurement report.

A User Equipment, UE, comprising:

• a measurement configuration receiving unit configured to receive measurement configuration information sent from an access device of a source system;
• a measuring unit configured to measure cells on at least two frequencies in a target system according to the measurement configuration information;
• and
• a measurement reporting unit configured to report simultaneously measurement results obtained by measuring the cells on the at least two frequencies in the target system, in a measurement report message to the access device of the source system when a measurement report is triggered according to the measurement configuration information, so that the access device of the source system determines a primary cell and a secondary cell of the target system to which a handover is to be performed according to the measurement results;
• wherein the source system and the target system are systems of different Radio Access Technology, and wherein reporting the measurement results to the access device of the source system specifically comprises reporting measurement reports of cells with the strongest channel quality on each of additional measurement frequencies related to one of the frequencies which triggers a measurement report to the access device of the source system when determining that the one of the frequencies is configured with additional measurement and a cell on the frequency triggers a measurement report.