UE DEVICE AND METHOD

摘要

The invention provides a solution for Discovery Signal (DS) in the device-to-device (D2D) communication, and includes a UE device and a method therefor. In an embodiment, the UE sends a DS to indicate configuration information through which a D2D communication connection can be established. The configuration information is suitable for a DS with a bit of information or a DS with a sequence. Through the technical solution provided in the invention, configuration information indicated by a DS can be minimized and the requirement of establishing a D2D communication connection can be satisfied in the meantime.

主权项

1. A method used in UE, comprising:
mapping configured information to a DS, wherein the configured information includes at least one of the following: first information: whether U1 is in the coverage of a service cell or not; second information: the service cell physical ID C_ID1 of the camping service cell of U1; third information: the physical ID G_ID of the camping D2D group of U1; fourth information: the index of the time frequency resource block R1-included subframe among the S candidate subframes, which are within the current time window and can be used for the DS transmission; transmitting the DS on the time-frequency resource block R1; wherein the U1 is the transmitter of the DS, or the U1 is the head of the D2D group in which the transmitter of the DS camps, the time window is a periodic and continuous time window which is maintained by the U1, the indexes of the frames in the time window are from 0 to L−1, L is the maximum value of SFN plus 1, S is a positive integer not greater than 10 times of L, and the G_ID is an integer.