Transmission of device-to-device (D2D) control data from a first D2D device to a second D2D device in a cellular communication system

• US 10,070,417 B2
• Filed: 05/23/2013
• Issued: 09/04/2018
• Est. Priority Date: 05/23/2012
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Kalhan, Amit
• Primary Examiner(s): Nawaz, Asad
• Assistant Examiner(s): Cairns, Thomas R
• Application Number:
  US14/400,385
• Publication Number:
  US 20150156757A1
• Time in Patent Office: 1,930 Days
• Field of Search: 370329, 370252
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 72/563 of the wireless resources
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A first wireless communication device receives device-to-device D2D control information from a base station in a cellular communication system and sends second device D2D control data to a second wireless communication device. The second device control data may comprise resources information and is used for establishing a D2D communication over a link between the first wireless communication device and the second wireless communication device; the second device D2D control data is at least partially based on the D2D control information.

Claims

1. A method performed at a first device-to-device (D2D) wireless communication device, the method comprising:

deriving system timing of a macrocell communication system from a macrocell reference signal received from a base station;

transmitting a reference signal to a second D2D wireless communication device over a D2D communication link using D2D communication resources that are a subset of defined macrocell communication resources defined by a communication specification for the macrocell system, the reference signal providing the system timing to the second D2D wireless communication device.

2. The method of claim 1, comprising:

receiving a D2D signal from the second D2D wireless communication device, the D2D signal synchronized to the system timing.