# US 2016/0366647 A1 · Multi-channel low power communication method and apparatus

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- Number: US 2016/0366647 A1
- Document ID: US20160366647A1
- Status: Published application
- Kind: A1
- Application number: 15/247,596
- Filed: 2016-08-25
- Published: 2016-12-15
- Earliest claimed: 2013-10-14
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Electronics and Telecommunications Research Institute
- Inventors: Il Gu LEE; Jung Bo SON; Hee Soo LEE; Sok Kyu LEE
- Web page: https://patentgrep.com/patent/US20160366647A1

## CPC

- H04W 52/0235: {where the received signal is a power saving command}
- H04W 74/0816: with collision avoidance
- Y02D 30/70: in wireless communication networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A multi-channel low power communication method and apparatus are provided. The multi-channel low power communication method may include transmitting request to send (RTS) to a receiver through a plurality of communication channels, receiving clear to send (CTS) from the receiver in response to the RTS, and transmitting a data packet through part or entire of at least one communication channel having received the CTS among the plurality of communication channels, wherein at least one of the RTS and the CTS comprises a multi-channel power save information field related to multi-channel power save.

## Claims

### Claim 1

A multi-channel low power communication method performed by a receiver, the method comprising:
receiving, from a transmitter, information on a channel bandwidth of the transmitter; and
determining a channel bandwidth for communicating with the transmitter based on the received information on the channel bandwidth of the transmitter so that a power consumption is reduced.

### Claim 2 (depends on 1)

The multi-channel low power communication method of claim 1, wherein the determining comprises determining a channel bandwidth smaller than a current channel bandwidth as the channel bandwidth for communicating with the transmitter.

### Claim 3 (depends on 1)

The multi-channel low power communication method of claim 1, wherein the determining comprises determining the channel bandwidth for communicating with the transmitter based on at least one of a battery state and an interference state.

### Claim 4 (depends on 1)

The multi-channel low power communication method of claim 1, wherein an operation frequency of the receiver is reduced according to the determined channel bandwidth so that the power consumption is reduced.

### Claim 5

A multi-channel low power communication method performed by a transmitter, the method comprising:
transmitting, to a receiver, information on a channel bandwidth of the transmitter; and
communicating with the receiver in power save mode using a channel bandwidth determined by the receiver,
wherein the receiver determines the channel bandwidth for communicating with the transmitter based on the received information on the channel bandwidth of the transmitter so that a power consumption is reduced.

### Claim 6 (depends on 5)

The multi-channel low power communication method of claim 5, wherein the receiver determines a channel bandwidth smaller than a current channel bandwidth as the channel bandwidth for communicating with the transmitter.

### Claim 7 (depends on 5)

The multi-channel low power communication method of claim 5, wherein the receiver determines the channel bandwidth for communicating with the transmitter based on at least one of a battery state and an interference state.

### Claim 8 (depends on 5)

The multi-channel low power communication method of claim 5, wherein an operation frequency of the receiver is reduced according to the determined channel bandwidth so that the power consumption is reduced.