Method for transmitting and receiving data in wireless communication system using shared band, and device therefor

Patent metadata

Field	Value
Publication number	US-2016338053-A1
Application number	US-201615154284-A
Country	US
Kind code	A1
Filing date	May 13, 2016
Priority date	May 14, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

A fifth generation (5G) or pre-5G communication system for supporting higher data transmission rate after a fourth generation (4G) communication system, such as long term evolution (LTE) is provided. A method of transmitting data by a transmitting device in a wireless communication system using a shared band includes determining a first length of a next time period for determining a next data transmission in the shared band based on at least one of link information configured with at least two receiving devices, and a measurement value of the transmitting device, determining whether a channel of the shared band is occupied in the next time period, and transmitting next data according to a result of the determinations.

First claim

What is claimed is:

1 . A method of transmitting data by a transmitting device in a wireless communication device using a shared band, the method comprising:
determining a first length of a next time period for determining next data transmission in the shared band based on at least one of link information configured with at least two receiving devices and a measurement value of the transmitting device; determining whether a channel of the shared band is occupied in the next time period; and transmitting next data according to a result of the determinations.

2 . The method of claim 1 , wherein the link information includes at least one of a result in which a corresponding receiving device receives present data, a second length of a present time period for determining transmission of present data in the shared band, a priority of a corresponding link, and channel state information.

3 . The method of claim 1 , wherein the determining of the first length comprises determining the first length for each of the at least two receiving devices individually, or as a common value.

4 . The method of claim 1 ,
wherein the measurement value includes an energy measurement result for the shared band at different time points or an energy measurement result for the shared band in an idle period configured after transmitting present data by occupying the channel, and wherein, if the transmitting device occupies the channel, the measurement value includes at least one of an energy measurement result measured in two or more time slots, a number of successive identifications of a vacancy of the channel, a channel occupation result of the shared band, a number of maintenances of the next time period according to an identification of the channel occupation of the shared band, and information on whether the channel is occupied or not at a predetermined time point.

5 . The method of claim 4 , wherein if the first length is determined based on the measurement value, the determining of the first length comprises:
transferring information indicating the two or more time slots to a transmitting device adjacent to the at least two receiving devices; receiving result information indicating whether the channel of the shared band is occupied from the at least two receiving devices at the two or more time slots; and determining the first length based on the result information.

6 . A method of receiving data by a receiving device in a wireless communication system using a shared band, the method comprising:
receiving, from a transmitting device, data through the shared band; and transmitting a receiving result of the data to the transmitting device, wherein the transmitting of the receiving result is performed if a channel of the shared band is not occupied in a next time period having a first length determined based on at least one of information on a link configured between the transmitting device and the receiving device, and a measurement value of the transmitting device.

7 . The method of claim 6 , wherein the link information includes at least one of a second length of a present time period for determining the transmission of present data in the shared band, a priority of the link, and channel state information measured for the link.

8 . The method of claim 6 ,
wherein the first length has a value that is common, or different from, at least two receiving devices for which a link is configured with the transmitting device, or wherein the first length is determined using an energy measurement result for the shared band at different time points.

9 . The method of claim 6 , wherein if the transmitting device occupies a channel of the shared band, the measurement value includes at least one of an energy measurement result measured in two or more determined time slots, a number of successive identifications of a vacancy of the channel of the shared band, a channel occupation result of the shared band, a number of maintenances of the next time period according to an identification of the channel occupation of the shared band, and information on whether the channel is occupied at a predetermined time point.

10 . The method of claim 6 ,
wherein if the first length is determined using both of the link information and the measurement value, receiving, from the transmitting device, a reception result of data received through the shared band, and wherein the method further comprises, when an energy measurement result of the shared band in a present time period indicates that the channel is not occupied, re-configuring the first length based on a reception result.

11 . A transmitting device for transmitting data in a wireless communication device using a shared band, the transmitting device comprising:
a control unit configured to:
determine a first length of a next time period for determining next data transmission in the shared band based on at least one of link information configured with at least two receiving devices, and a measurement value of the transmitting device, and
determine whether a channel of the shared band is occupied in the next time period; and
a transmitting and receiving unit configured to transmit next data according to a result of the determinations.

12 . The transmitting device of claim 11 , wherein the link information includes at least one of a result in which a corresponding receiving device receives present data, a second length of a present time period for determining transmission of present data in the shared band, a priority of a corresponding link, and channel state information.

13 . The transmitting device of claim 11 , wherein the control unit is further configured to determine the first length for each of the at least two receiving devices individually, or as a common value.

14 . The transmitting device of claim 11 ,
wherein the measurement value includes an energy measurement result for the shared band at different time points or an energy measurement result for the shared band in an idle period configured after transmitting present data by occupying the channel, and wherein if the transmitting device occupies the channel, the measurement value includes at least one of an energy measurement result measured in two or more time slots, a number of successive identifications of a vacancy of the channel, a channel occupation result of the shared band, a number of maintenances of the next time period according to an identification of the channel occupation of the shared band, and information on whether the channel is occupied at a predetermined time point.

15 . The transmitting device of claim 14 , wherein the control unit is further configured to:
if the control unit determines the first length is determined based on the measurement value, control to transfer information indicating the two or more time slots to a transmitting device adjacent to the at least two receiving devices, through the transmitting and receiving unit, and when the control unit receives result information indicating whether the channel of the shared band is occupied from the at least two receiving devices the at two or more time slots, through the transmitting and receiving unit, determine the first length based on the result information.

16 . A receiving device for receiving data in a wireless communication system using a shared band, the receiving device comprising:
a transmitting and receiving unit configured to receive, from the transmitting device, data through the shared band; and a control unit configured to:
generate a reception result of the data, and
control the tran

Assignees

• Samsung Electronics Co Ltd

Inventors

• Park Seung-Hoon
• Moon Jung-Min
• Jung Byoung-Hoon
• Ryoo Sun-Heui
• Jung Jung-Soo

Classifications

• H04W72/56

  based on priority criteria · CPC title

• H04W74/0808 Primary

  using carrier sensing, e.g. carrier sense multiple access [CSMA] · CPC title

• H04W72/085

  Electricity · mapped topic

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title