USER EQUIPMENT, A NETWORK NODE AND METHODS FOR DEVICE DISCOVERY IN A DEVICE-TO-DEVICE (D2D) COMMUNICATION IN A WIRELESS TELECOMMUNICATIONS NETWORK

摘要

A first user equipment transmits a beacon signal to be detected by at least one second user equipment for Device-to-Device, D2D, communication in a wireless telecommunications network. The first user equipment transmits the beacon signal in transmission bursts with a first energy level, where the transmission bursts are transmitted continually over time in order to enable detection of the beacon signal by the at least one second user equipment. The first user equipment then increases the energy of the transmission bursts at one or more intervals to a second energy level such that transmission bursts with the first energy level is alternated with transmission bursts with the second energy level, and such that transmission bursts with the first energy level recur more frequently over time than transmission bursts with a second energy level. A user equipment, a network node and a method in the network node are also provided.

主权项

1. A method in a first user equipment for transmitting a beacon signal to be detected by at least one second user equipment for Device-to-Device, D2D, communication in a wireless telecommunications network, said method comprising
transmitting the beacon signal in transmission bursts with a first energy level, wherein the transmission bursts are transmitted continually over time in order to enable detection of the beacon signal by the at least one second user equipment, increasing the energy of the transmission bursts at one or more intervals to a second energy level such that transmission bursts with the first energy level are alternated with transmission bursts with the second energy level, and such that transmission bursts with the first energy level recur more frequently over time than transmission bursts with the second energy level.