Method and device for discovering UE, first UE and base station

摘要

The present invention discloses a method and a device for discovering a UE, a first UE and a base station. The method for discovering a UE comprises the steps of: monitoring, by a first UE, an uplink signal in a mobile communication system; extracting, by the first UE, first information for identifying a UE that is to be discovered and that transmits the uplink signal from the monitored uplink signal; transmitting, by the first UE, a monitoring report message carrying the first information to a base station, acquiring, by the first UE, the device ID of the UE to be discovered in accordance with the monitoring report response message and completing the discovery process of the UE. According to the present invention, it is able to discover the UE without changing a channel system of an existing system and occupying time-frequency resources of the system.

主权项

1. A method for discovering a User Equipment (UE), comprising:
monitoring, by a first UE, an uplink signal in a mobile communication system; extracting, by the first UE, first information for identifying a UE that is to be discovered and that transmits the uplink signal from the monitored uplink signal; transmitting, by the first UE, a monitoring report message carrying the first information to a base station so that the base station can determine the UE to be discovered in accordance with the first information carried in the monitoring report message upon receiving the monitoring report message, and return a monitoring report response message carrying a device ID of the UE to be discovered to the first UE; and upon receiving the monitoring report response message, acquiring, by the first UE, the device ID of the UE to be discovered in accordance with the monitoring report response message and completing the discovery process of the UE; the method further comprising: upon receiving a control message transmitted from the base station after the base station cannot identify the UE to be discovered, performing, by the first UE, an uplink signal transmission process in accordance with transmission parameters carried in the control message, so that the uplink signal transmitted by the first UE in accordance with the carried transmission parameters can be monitored more easily.