Apparatus and method for link setup in wireless communication system

Patent metadata

Field	Value
Publication number	US-2016295502-A1
Application number	US-201615090592-A
Country	US
Kind code	A1
Filing date	Apr 4, 2016
Priority date	Apr 2, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Link setup using different Radio Access Technologies (RATs) in a wireless communication system is provided. A method for operating a device supporting a first RAT and a second RAT includes sending information notifying a discovery interval start time for the second RAT, using the first RAT, and sending discovery signals during the discovery interval using the second RAT.

First claim

What is claimed is:

1 . A method for operating a device supporting a first Radio Access Technology (RAT) and a second RAT, comprising:
sending information notifying a start time of a discovery interval for the second RAT, using the first RAT; and sending discovery signals during the discovery interval using the second RAT.

2 . The method of claim 1 , further comprising:
adjusting a beamwidth of the discovery signals based on at least one of signal strength of the first RAT and a service attribute using the second RAT.

3 . The method of claim 1 , further comprising:
sending information about at least one of a discovery signal beamwidth and the number of beam sectors of the discovery signal.

4 . The method of claim 1 , further comprising:
receiving an Acknowledgement (ACK) in response to the information notifying the discovery interval start time; and when receiving the ACK from all of candidate devices, suspending the sending of the information notifying the discovery interval start time.

5 . The method of claim 1 , wherein sending the discovery signals comprises:
sending signals over an omni-directional beam in an interval where other devices perform receive (RX) beamforming.

6 . The method of claim 1 , further comprising:
allocating slots of the discovery interval to other devices; detecting a discovery signal transmit (TX)-beamformed by the other devices in the slots; and sending feedback notifying a discovery signal detection result, to the other devices.

7 . The method of claim 1 , further comprising:
sending a signal notifying a list of at least one other device for data sharing.

8 . A device for supporting a first Radio Access Technology (RAT) and a second RAT, comprising:
a first communication module configured to send information notifying a start time of a discovery interval for the second RAT, using the first RAT; and a second communication module configured to send discovery signals during the discovery interval using the second RAT.

9 . The device of claim 8 , further comprising:
a control unit configured to adjust a beamwidth of the discovery signals based on at least one of signal strength of the first RAT and a service attribute using the second RAT.

10 . The device of claim 8 , wherein the first communication module is configured to send information about at least one of a discovery signal beamwidth and the number of beam sectors of the discovery signal.

11 . The device of claim 8 , wherein the first communication module is configured to receive an Acknowledgement (ACK) in response to the information notifying the discovery interval start time, and further comprising:
a control unit configured to, when receiving the ACK from all of candidate devices, suspend the sending of the information notifying the discovery interval start time.

12 . The device of claim 8 , wherein the second communication module is configured to send signals over an omni-directional beam in an interval where other devices perform receive (RX) beamforming.

13 . The device of claim 8 , further comprising:
a control unit configured to allocate slots of the discovery interval to other devices, wherein the second communication module is configured to detect a discovery signal transmit (TX)-beamformed by the other devices in the slots and send feedback notifying a discovery signal detection result to the other devices.

14 . The device of claim 8 , wherein the first communication module is configured to send a signal notifying a list of at least one other device for data sharing.

15 . A device for supporting a first Radio Access Technology (RAT) and a second RAT, comprising:
a first communication module configured to receive information notifying a start time of a discovery interval for the second RAT, using the first RAT; and a second communication module configured to receive discovery signals during the discovery interval using the second RAT.

16 . The device of claim 15 , wherein the first communication module is configured to receive information about at least one of a discovery signal beamwidth and the number of beam sectors of the discovery signal.

17 . The device of claim 15 , wherein the first communication module is configured to send an Acknowledgement (ACK) in response to the information notifying the discovery interval start time.

18 . The device of claim 15 , wherein the second communication module is configured to detect one of signals transmit (TX)-beamformed in a plurality of directions, in an interval where a plurality of devices receiving the information notifying the discovery interval start time operate in a listen state.

19 . The device of claim 15 , wherein the second communication module is configured to detect one of discovery signals transmitted over an omni-directional beam in an interval where a plurality of devices receiving the information notifying the discovery interval start time perform receive (RX) beamforming.

20 . The device of claim 15 , wherein:
the first communication module is configured to receive allocation information of slots of the discovery interval from a control device, and
the second communication module is configured to send discovery signals TX-beamformed in different directions during a slot allocated to the device and receive feedback notifying a discovery signal detection result from the control device.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Yoon Sungrok
• Kang Young Myoung
• Kwon Changyeul
• Lee Myounghwan
• Jung Doyoung

Classifications

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• Y02D30/70

  in wireless communication networks · CPC title