Inter-rat measurement method, related apparatus, and measurement system

A control node, wherein the control node is in a first RAT network, and the control node comprises a sending unit and a processing unit, wherein

• the sending unit is configured to send a measurement control message to a user equipment (UE) in the first RAT network, wherein each connected-discontinuous reception (C-DRX) cycle comprises a dormant period and an active period, and the measurement control message is used to instruct the UE to measure signal quality of a second RAT network in a dormant period of a first C-DRX cycle;
• the processing unit is configured to disable a first inactive-period timer, wherein the first inactive-period timer is used to perform timing for the control node in an active period of the first C-DRX cycle;
• and
• the sending unit is further configured to perform downlink transmission for the UE in the active period of the first C-DRX cycle.

A user equipment (UE), wherein the UE is in a first RAT network, and the UE comprises a receiving unit, a processing unit, and a sending unit, wherein

• the receiving unit is configured to receive a measurement control message sent by a control node in the first RAT network, wherein each connected-discontinuous reception (C-DRX) cycle comprises a dormant period and an active period, and the measurement control message is used to instruct the UE to measure signal quality of a second RAT network in a dormant period of a first C-DRX cycle;
• the receiving unit is further configured to receive control signaling sent by the control node, wherein the control signaling is used to instruct the UE to stop sending uplink signaling or data of the UE, and is used to instruct the UE to send uplink signaling or data of the UE after the UE sends a measurement report;
• the processing unit is configured to measure the signal quality of the second RAT network in the dormant period of the first C-DRX cycle according to the measurement control message;
• the processing unit is further configured to stop, according to the control signaling, sending uplink signaling or data of the UE;
• and
• the sending unit is configured to send uplink signaling or data of the UE after sending the measurement report.