Method and device for operation based on multiple channels in sensor network

Patent metadata

Field	Value
Publication number	US-2018338311-A1
Application number	US-201815983251-A
Country	US
Kind code	A1
Filing date	May 18, 2018
Priority date	May 18, 2017
Publication date	Nov 22, 2018
Grant date	—

Abstract

A method of transmitting control information by an end node in a wireless communication system supporting multi-channel transmission includes: transmitting control information to a center node on a first channel among multiple channels within a control period of a wireless frame when the first channel is in an idle state; transmitting the control information to the center node on a second channel when the first channel is not in the idle state and the second channel is in the idle state, the second channel being selected from channels other than the first channel among the multiple channels; and transmitting the control information to the center node in a subsequent wireless frame when the second channel is not in the idle state.

First claim

What is claimed is:

1 . A method of transmitting control information by an end node in a wireless communication system supporting multi-channel transmission, the method comprising:
transmitting control information to a center node on a first channel among multiple channels within a control period of a wireless frame when the first channel is in an idle state; transmitting the control information to the center node on a second channel when the first channel is not in the idle state and the second channel is in the idle state, wherein the second channel being selected from channels other than the first channel among the multiple channels; and transmitting the control information to the center node in a subsequent wireless frame when the second channel is not in the idle state.

2 . The method of claim 1 , wherein the control period of the wireless frame includes a control information reception period of the end node and a control information transmission period of the end node.

3 . The method of claim 1 , wherein the wireless frame includes the control period and a data period.

4 . The method of claim 3 , wherein in a specific time period determined based on resource assignment information within the data period of the wireless frame, the end node transmits data to the center node on a third channel determined based on the resource assignment information among the multiple channels.

5 . The method of claim 4 , wherein the resource assignment information includes information on a channel on which transmission of the end node is allowed, a time at which transmission of the end node is allowed, a transmission size of the end node, and a transmission cycle of the end node.

6 . The method of claim 4 , wherein in the specific time period, data transmission on the third channel from the end node to the center node is performed simultaneously with data transmission on a fourth channel from, other than the end node, another end node to the center node.

7 . The method of claim 4 , wherein the third channel is one of the first channel and the second channel.

8 . The method of claim 4 , wherein the third channel is a channel other than the first channel and the second channel.

9 . The method of claim 1 , wherein the control information transmitted on the first channel is received by a master node of the center node, and the control information transmitted on the second channel is received by one sub-node corresponding to the second channel among one or more sub-nodes of the center node.

10 . The method of claim 1 , wherein the end node receives a beacon frame from the center node at a start time of the wireless frame.

11 . The method of claim 1 , wherein the control information includes at least one of registration request information and resource assignment request information of the end node.

12 . An end node device that transmits control information in a wireless communication system supporting multi-channel transmission, the end node device comprising:
a transceiver; a memory; and a processor, wherein the processor is configured to, within a control period of a wireless frame, transmit control information to a center node on a first channel when the first channel is in an idle state among multiple channels; transmit the control information to the center node on a second channel when the first channel is not in the idle state and the second channel selected from channels other than the first channel among the multiple channels is in the idle state; and transmit the control information to the center node in a subsequent wireless frame when the second channel is not in the idle state.

13 . A method of operating a center node in a wireless communication system supporting multi-channel transmission, the method comprising:
transmitting control information to an end node on a first channel among multiple channels within a control period of a wireless frame; and receiving the control information from the end node on the first channel or on a second channel among the multiple channels within the control period of the wireless frame, wherein when the first channel is not in an idle state, the second channel is a channel selected randomly by the end node.

14 . The method of claim 13 , wherein the control period of the wireless frame includes a control information transmission period of a center node and a control information reception period of the center node.

15 . The method of claim 13 , wherein the wireless frame includes the control period and a data period.

16 . The method of claim 15 , wherein within the data period, data reception on a third channel from the end node to the center node is performed simultaneously with data reception on a fourth channel from, other than the end node, another end node to the center node.

17 . The method of claim 16 , wherein the third channel is one of the first channel and the second channel.

18 . The method of claim 16 , wherein the third channel is a channel other than the first channel and the second channel.

19 . The method of claim 13 , wherein the control information received on the first channel is received by a master node of the center node, and the control information received on the second channel is received by one sub-node corresponding to the second channel among one or more sub-nodes of the center node.

20 . A center node device that operates in a wireless communication system supporting multi-channel transmission, the center node device comprising:
a transceiver; a memory; and a processor, wherein the processor is configured to, transmit control information to an end node on a first channel among multiple channels within a control period of a wireless frame; receive the control information from the end node on the first channel or on a second channel among the multiple channels within the control period of the wireless frame, wherein when the first channel is not in an idle state, the second channel is a channel selected randomly by the end node.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Yeo Geon Min
• Lim Sun Hwa
• Kim Young Il
• Park Dae Geun
• Song Soon Yong
• Choi Byeong Cheol

Classifications

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/0446

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

• H04W72/0413

  Electricity · mapped topic

• H04W4/38

  for collecting sensor information · CPC title

• H04W72/0453 Primary

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title