METHOD OF TRANSCEIVING FOR DEVICE TO DEVICE COMMUNICATION

• US 20170353985A1
• Filed: 08/22/2017
• Published: 12/07/2017
• Est. Priority Date: 04/30/2012
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: SEO, Bang Won, KO, Young Jo, NOH, Tae Gyun, AHN, Jae Young
• Application Number:
  US15/683,009
• Publication Number:
  US 20170353985A1
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A method of transmitting and receiving a specific reference signal in single point transmission and multi-point transmission is disclosed. The specific reference signal transmission method includes determining specific reference signal transmission resources for at least one terminal targeted for transmission, and transmitting the specific reference signal using the determined transmission resources and notifying of information for a layer used by the terminal. The specific reference signal transmission method includes determining specific reference signal reception resources, receiving the information for the layer used by the terminal from a serving cell base station, and receiving the specific reference signal using the information for determined transmission resources and the layer.

Therefore, the terminal can recognize a position and a sequence of the specific reference signal. Particularly, in the case of multi-user MIMO and cooperative scheduling, signal interference can be suppressed or removed using the specific reference signal of another terminal.

Claims

1. A method of operating a terminal that receives data or control information from a partner terminal through direct communication between terminals using a subframe for device-to-device (D2D) communication among subframes, the subframes being classified into a subframe for cellular communication and the subframe for D2D communication, a D2D communication method comprising:

receiving information of SRS configurations of the partier terminal from a base station, wherein the information of SRS configurations of the partner terminal includes

     1) UE-specific sounding reference signal (SRS) subframe position information,

     2) proximity measurement sounding reference signal (PM-SRS) transmission and reception subframe information, and

     3) channel state information sounding reference signal (CSI-SRS) transmission and reception subframe information,

determining state of the partner terminal from the information of SRS configurations of the partner terminal, and

determining whether to use at least one symbol of the subframe for D2D communication for receiving the data or control information from the partner terminal according to the state information.