Method, device and system for sending and receiving messages

摘要

A method, a device, and a system for sending and receiving messages are provided. The method for sending messages includes: receiving, by a Mobility Management Entity (MME), an Earthquake and Tsunami Warning System (ETWS) message; setting an information change identifier if the received ETWS message is different from the ETWS message stored by the MME; and sending the received ETWS message and the information change identifier. In the embodiments of the present disclosure, the MME decides whether to send the ETWS message to the eNB. Therefore, the eNB needs only to transmit the received message to the UE transparently, and does not need to judge the content of the ETWS message, thus simplifying the process of the eNB sending the ETWS message and reducing the load of the access network device.

主权项

1. A method for receiving a message, comprising:
acquiring, by a User Equipment (UE), a system message when the UE is handed over or reselected from a cell A to a cell B, wherein the system message includes an area identifier and an Earthquake and Tsunami Warning System (ETWS) message, wherein the area identifier indicates an area that covers the cell B, and wherein if the cell A and the cell B are in a same area, an area identifier of the cell A and an area identifier of the cell B are the same; if the cell A and the cell B are in two different areas, the area identifier of the cell A differs from the area identifier of the cell B; reading the acquired area identifier and judging whether the acquired area identifier is different from a stored area identifier stored by the UE; on condition that the acquired area identifier is different from the stored area identifier, reading the acquired ETWS message; and on condition that the acquired area identifier is the same as the stored area identifier, not reading the acquired ETWS message.