KR20200046529A - WLAN wake-up device and its method - Google Patents

Abstract

The present invention a wireless LAN wake-up device and a method thereof which transmit a beacon signal to a terminal requiring wake-up in consideration of wake-up efficiency, and transmit the beacon signal only to a terminal requiring wake-up by using a group identification (ID) and an individual ID or by using a technique such as beam-forming for a beacon signal used for broadcasting. According to the present invention, the wireless LAN wake-up device consists of a wireless LAN access point (AP) which provides wireless LAN services to a terminal.

Description

Wireless LAN wake-up device and its method

The present invention relates to a wireless LAN wake-up apparatus and method, and specifically, to transmit a wake-up signal from the wireless LAN AP to the wake-up terminal. That is, the present invention relates to a wireless LAN wake-up apparatus and method capable of optimally utilizing wireless resources of a wireless LAN by selectively transmitting to a terminal requiring a wake-up signal.

Recently, as the spread of mobile devices has expanded, wireless LAN technology capable of providing fast wireless Internet services to them has attracted much attention. Wireless LAN technology is a technology that enables mobile devices such as smartphones, smart pads, laptop computers, portable multimedia players, embedded devices, etc. to access the Internet wirelessly from a home, business, or specific service area based on wireless communication technology at a short distance. to be.

In 802.11ax, which is a next-generation wireless LAN standard after 802.11ac and 802.11ad, discussions are continuing to provide high-efficiency and high-performance wireless LAN communication technology in a high-density environment.

That is, in a next-generation wireless LAN environment, high-frequency / high-efficiency communication must be provided in the presence of a high-density station and an access point (AP), and various technologies are required to implement this.

In addition, in order to extend the battery life of mobile devices equipped with a wireless LAN while simultaneously developing technologies to increase the speed and efficiency of the wireless LAN, and to mount wireless LANs in devices operating based on very limited strategic sources, such as batteries, It is necessary to develop an efficient wireless LAN power saving technique.

Previously proposed wireless LAN power saving techniques are methods in which devices periodically enter sleep mode to reduce power. In this case, the higher the power saving efficiency of the device, the longer it wakes up, so communication with the device increases. There are delays. To solve this problem, research on power saving techniques using a separate low-power wake-up receiver has been continued.

As an example, in Korean Patent Publication No. 10-2018-0029286, an efficient power saving operation is performed through a wake-up receiver in a wireless LAN, and a method for efficiently performing a subsequent data exchange sequence after the device wakes up is presented. .

However, even in this case, there is a disadvantage in that power is wasted for a terminal that does not require wake-up because multiple terminals are wake-up at the same time.

Republic of Korea Patent Publication No. 10-2018-0029286 (2018.03.21.)

An object of the present invention is to provide a wireless LAN wake-up apparatus and method for transmitting a beacon signal to a terminal requiring wake-up in consideration of wake-up efficiency.

Another aspect of the present invention is to provide a wireless LAN wake-up apparatus and method for transmitting a beacon signal only to a terminal requiring wake-up by using a group ID and an individual ID or a beamforming technique for a beacon signal used for broadcasting. There is a purpose.

The wireless LAN wake-up device according to the present invention may include a wireless LAN AP that provides wireless LAN service to a terminal.

Here, the terminal may perform a wake-up function.

In addition, the wireless LAN AP may transmit a wake-up signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the wireless LAN AP based on the broadcasting function in the wake-up frame.

Here, the WLAN AP wakes only the first terminal and the second terminal preselected as the group ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP based on the group ID function in the wake-up frame. A wake-up signal can be transmitted to be up.

In addition, the wireless LAN AP wakes up so that only the first terminal preselected as an individual ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the wireless LAN AP based on the individual ID function in the wake-up frame is wake-up. Up signal can be transmitted.

Here, the WLAN AP can control the beacon transmission power of the WLAN AP so that only the first terminal close to the WLAN AP among the first terminal, the second terminal, and the third terminal can receive a wake-up signal.

In addition, the wireless LAN AP is beamforming so that only the second terminal among the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the wireless LAN AP based on the broadcasting function in the wake-up frame can receive the wake-up signal. You can do

Meanwhile, when the WLAN AP receives a wake-up frame of another WLAN AP from the WLAN AP, the WLAN AP does not transmit a wake-up signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP. It can be characterized as not.

The wireless LAN wake-up method according to another embodiment of the present invention may include a wireless LAN service providing step in which the wireless LAN AP provides the wireless LAN service to the terminal.

Here, the terminal may perform a wake-up function.

In addition, the wireless LAN AP may transmit a wake-up signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the wireless LAN AP based on the broadcasting function in the wake-up frame.

Here, the WLAN AP wakes only the first terminal and the second terminal preselected as the group ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP based on the group ID function in the wake-up frame. A wake-up signal can be transmitted to be up.

In addition, the wireless LAN AP wakes up so that only the first terminal preselected as an individual ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the wireless LAN AP based on the individual ID function in the wake-up frame is wake-up. Up signal can be transmitted.

Here, the WLAN AP can control the beacon transmission power of the WLAN AP so that only the first terminal close to the WLAN AP among the first terminal, the second terminal, and the third terminal can receive a wake-up signal.

In addition, the wireless LAN AP is beamforming so that only the second terminal among the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the wireless LAN AP based on the broadcasting function in the wake-up frame can receive the wake-up signal. You can do

Here, the WLAN AP does not transmit a wake-up signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP when receiving the wake-up frame of another WLAN AP from the WLAN AP. It can be characterized as not.

The wireless LAN wake-up apparatus and method according to the present invention has an advantage of transmitting a beacon signal to a terminal requiring wake-up in consideration of wake-up efficiency.

In addition, the wireless LAN wake-up apparatus and method according to the present invention can transmit a beacon signal only to a terminal requiring wake-up by using a group ID and an individual ID for a beacon signal used for broadcasting or using a technique such as beamforming. There is an advantage.

1 is a configuration diagram showing a wireless LAN wake-up device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a configuration in which the WLAN AP of FIG. 1 transmits a beacon signal that can wake up only a plurality of terminals designated as a group using a group ID.
FIG. 3 is a diagram illustrating a configuration in which the WLAN AP of FIG. 1 transmits a beacon signal that can wake up only one specific terminal using an individual ID.
FIG. 4 is a block diagram of a configuration in which the WLAN AP of FIG. 1 transmits a beacon signal capable of waking up only a terminal close to the WLAN AP by controlling transmission power of the beacon.
FIG. 5 is a diagram illustrating a configuration in which the WLAN AP of FIG. 1 transmits a beacon signal that can wake up only a terminal located in some region using beamforming.
FIG. 6 does not transmit a wakeup signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP when the WLAN AP of FIG. 1 receives the wakeup frame of another WLAN AP. This is a schematic diagram.
7 is a flowchart illustrating a wireless LAN wake-up method according to an embodiment of the present invention.

A specific embodiment for carrying out the present invention will be described with reference to the accompanying drawings.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and can be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, a wireless LAN wake-up apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram showing a wireless LAN wake-up apparatus according to an embodiment of the present invention, FIGS. 2 to 6 are detailed configuration diagrams for describing FIG. 1 in detail.

Hereinafter, a wireless LAN wake-up device according to an embodiment of the present invention may be described with reference to FIGS. 1 to 6.

First, referring to FIG. 1, a wireless LAN wake-up device according to an embodiment of the present invention includes a wireless LAN AP 100 that provides a wireless LAN service to a terminal.

Here, the terminal may perform a wake-up function.

In addition, the wireless LAN AP 100 is a first terminal 210, a second terminal 220, and a third terminal 230 capable of receiving radio waves from the wireless LAN AP 100 based on a broadcasting function in a wake-up frame. Can send a wake-up signal.

That is, the wireless LAN AP 100 transmits a beacon signal to the first terminal 210, the second terminal 220, and the third terminal 230, at this time, the first terminal 210, the second terminal ( 220), and since the third terminal 230 both receive a beacon signal, it must be awakened to receive a beacon signal, and there is a disadvantage in that power is wasted.

FIG. 2 is a diagram illustrating a configuration in which the WLAN AP 100 of FIG. 1 transmits a beacon signal that can wake up only a plurality of terminals designated as a group using a group ID.

As can be seen in Figure 2, the wireless LAN AP 100, the first terminal 210, the second terminal 220, capable of receiving radio waves of the wireless LAN AP 100 based on the group ID function in the wake-up frame, And a wake-up signal such that only the first terminal 210 and the second terminal 220 pre-selected as the group ID among the third terminals 230 are wake-up.

Therefore, the first terminal 210 and the second terminal 220 designated together as a group ID have the advantage of being able to wake up simultaneously with the reception of the beacon signal, and in the case of the third terminal 230, the beacon signal can be selectively selected. Since it can receive, the first terminal 210, the second terminal 220, and the third terminal 230 has the advantage of being able to receive individual wake-up signals together with the beacon signal.

FIG. 3 is a diagram illustrating a configuration in which the WLAN AP 100 of FIG. 1 transmits a beacon signal that can wake up only one specific terminal using an individual ID.

As can be seen in Figure 3, the wireless LAN AP 100, the first terminal 210, the second terminal 220 capable of receiving radio waves of the wireless LAN AP 100 based on the individual ID function in the wake-up frame, And a wake-up signal such that only the first terminal 210 pre-selected as an individual ID among the third terminals 230 becomes a wake-up.

Therefore, the first terminal 210 has the advantage of being able to wake up simultaneously with the reception of the beacon signal, and the second terminal 220 and the third terminal 230 can selectively receive the beacon signal, The first terminal 210, the second terminal 220, and the third terminal 230 has the advantage of being able to receive individual wake-up signals together with the beacon signal.

FIG. 4 is a diagram illustrating a configuration in which the WLAN AP 100 of FIG. 1 transmits a beacon signal capable of waking up only a terminal close to the WLAN AP 100 by controlling the transmission power of the beacon.

As can be seen in Figure 4, the wireless LAN AP 100 is the first terminal 210, the second terminal 220, and the third terminal 230 of the first terminal close to the wireless LAN AP (100) ( 210) can control the beacon transmission power of the wireless LAN AP 100 so that the wake-up signal can be received.

That is, when the area capable of wake-up service from the wireless LAN AP 100 to the terminal is reduced, there is an advantage of reducing the power of the beacon signal and efficiently using the wireless resources of the wireless LAN AP 100.

FIG. 5 is a diagram illustrating a configuration in which the WLAN AP 100 of FIG. 1 transmits a beacon signal that can wake up only a terminal located in some region using beamforming.

As can be seen in Figure 5, the wireless LAN AP 100 is a first terminal 210, a second terminal 220 capable of receiving radio waves from the wireless LAN AP 100 based on a broadcasting function in a wake-up frame, And only the second terminal 220 of the third terminal 230 may perform beamforming so that a wake-up signal can be received.

That is, the terminal around the wireless LAN AP 100 does not receive the beacon as a whole, and transmits a beacon signal to only a selected region according to time, so there is an advantage of efficiently using wireless resources of the wireless LAN AP 100.

FIG. 6 illustrates a first terminal 210 and a second terminal capable of receiving radio waves from the WLAN AP 100 when the WLAN AP 100 of FIG. 1 receives a wake-up frame of another WLAN AP 300. 220), and a configuration diagram that does not transmit a wake-up signal to the third terminal 230.

As can be seen in Figure 6, the wireless LAN AP 100 is capable of receiving radio waves from the wireless LAN AP 100 when the wake-up frame of another wireless LAN AP 300 is received from the wireless LAN AP 100. The wake-up signal may not be transmitted to the first terminal 210, the second terminal 220, and the third terminal 230.

Therefore, when the neighboring WLAN APs are dense, there is an advantage in that the transmission of the beacon signal is stopped to efficiently use radio resources of the WLAN AP 100.

At this time, the first terminal 210, the second terminal 220, and the third terminal 230 are simultaneously in the service areas of the wireless LAN AP 100 and the other wireless LAN AP 300, and the wireless LAN AP 100. It is assumed that the wake-up frame is being received, and when the wake-up signal is not transmitted from the wireless LAN AP 100, the first terminal 210, the second terminal 220, and the third terminal 230 Since it is possible to receive a wake-up signal from another WLAN AP 300, there is an advantage of efficiently using radio resources of the WLAN AP 100.

Here, whether the first terminal 210, the second terminal 220, and the third terminal 230 are located in the service areas of the wireless LAN AP 100 and the other wireless LAN AP 300 is the first. Whether the terminal 210, the second terminal 220, and the third terminal 230 can be received can be pre-stored by transmitting to the wireless LAN AP 100 or another wireless LAN AP 300, and using another method. You can do it.

7 is a flowchart illustrating a wireless LAN wake-up method according to an embodiment of the present invention.

As can be seen in Figure 7, the wireless LAN wake-up method consists of a step (S100) of the wireless LAN AP (100) provides a wireless LAN service to the terminal.

Here, the terminal may perform a wake-up function.

In addition, the wireless LAN AP 100 is a first terminal 210, a second terminal 220, and a third terminal 230 capable of receiving radio waves from the wireless LAN AP 100 based on a broadcasting function in a wake-up frame. Can send a wake-up signal.

Here, the wireless LAN AP 100 is a first terminal 210, a second terminal 220, and a third terminal 230 capable of receiving radio waves from the wireless LAN AP 100 based on the group ID function in the wake-up frame. The wake-up signal may be transmitted so that only the first terminal 210 and the second terminal 220 preselected as the group ID are wake-up.

In addition, the wireless LAN AP 100 has a first terminal 210, a second terminal 220, and a third terminal 230 capable of receiving radio waves from the wireless LAN AP 100 based on individual ID functions in a wake-up frame. Among them, a wake-up signal may be transmitted so that only the first terminal 210 pre-selected as an individual ID wakes up.

Here, in the wireless LAN AP 100, only the first terminal 210 that is close to the wireless LAN AP 100 among the first terminal 210, the second terminal 220, and the third terminal 230 has a wake-up signal. The beacon transmission power of the wireless LAN AP 100 may be controlled to be received.

In addition, the wireless LAN AP 100 is a first terminal 210, a second terminal 220, and a third terminal 230 capable of receiving radio waves from the wireless LAN AP 100 based on a broadcasting function in a wake-up frame. Only the second terminal 220 may perform beamforming so that a wake-up signal can be received.

Here, when the wireless LAN AP 100 receives a wakeup frame of another wireless LAN AP 300 from the wireless LAN AP 100, the wireless LAN AP 100 can receive radio waves from the wireless LAN AP 100. It may be characterized in that the wake-up signal is not transmitted to the second terminal 220 and the third terminal 230.

That is, in order to efficiently use the radio resources of the wireless LAN AP 100, a beacon signal can be received and wake-up control is performed through a group ID, an individual ID, etc., and a wireless LAN is performed through power control or beamforming of the beacon signal. There is an advantage that can efficiently use the radio resources of the AP (100).

As described above, the WLAN wake-up apparatus and method according to the present invention has an advantage of transmitting a beacon signal to a terminal requiring wake-up in consideration of wake-up efficiency, and group ID and individual ID are assigned to the beacon signal used for broadcasting. There is an advantage in that a beacon signal can be transmitted only to a terminal requiring wakeup by using or using a technique such as beamforming.

What has been described above includes examples of one or more embodiments. Of course, rather than describing all possible combinations of components or methods for the purpose of describing the above-described embodiments, those skilled in the art can recognize that many additional combinations and substitutions of various embodiments are possible. Accordingly, the described embodiments are intended to cover all alternatives, modifications and variations that are within the spirit and scope of the appended claims.

Claims (16)

Wireless LAN wake-up device comprising a; wireless LAN AP to provide a wireless LAN service to the terminal. According to claim 1,
The terminal is a wireless LAN wake-up device, characterized in that for performing a wake-up function. According to claim 1,
The wireless LAN AP transmits a wake-up signal to a first terminal, a second terminal, and a third terminal capable of receiving radio waves from the wireless LAN AP based on a broadcasting function in a wake-up frame. Up device. According to claim 1,
The WLAN AP, the first terminal and the first terminal pre-selected as the group ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves of the WLAN AP based on the group ID function in the wake-up frame A wireless LAN wake-up device characterized in that the wake-up signal is transmitted so that only the terminal becomes a wake-up. According to claim 1,
The WLAN AP wakes up only the first terminal pre-selected as the individual ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves of the WLAN AP based on the individual ID function in the wake-up frame. Wireless wake-up device, characterized in that for transmitting the wake-up signal. According to claim 1,
The WLAN AP is configured to control the beacon transmission power of the WLAN AP so that only the first terminal close to the WLAN AP among the first terminal, the second terminal, and the third terminal can receive a wake-up signal. A wireless LAN wake-up device. According to claim 1,
The wireless LAN AP, so that only the second terminal of the first terminal, the second terminal, and the third terminal capable of receiving radio waves of the wireless LAN AP based on the broadcasting function in the wake-up frame can receive a wake-up signal A wireless LAN wake-up device, characterized in that for performing beamforming. According to claim 1,
When the WLAN AP receives a wake-up frame of another WLAN AP from the WLAN AP, the WLAN AP receives a wake-up signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP. Wireless LAN wake-up device, characterized in that it does not transmit. Wireless LAN wake-up method comprising a; wireless LAN AP providing a wireless LAN service to the terminal to the terminal. The method of claim 9,
The terminal is a wireless LAN wake-up method, characterized in that for performing a wake-up function. The method of claim 9,
The wireless LAN AP transmits a wake-up signal to a first terminal, a second terminal, and a third terminal capable of receiving radio waves from the wireless LAN AP based on a broadcasting function in a wake-up frame. Up method. The method of claim 9,
The WLAN AP, the first terminal and the first terminal pre-selected as the group ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves of the WLAN AP based on the group ID function in the wake-up frame A wireless LAN wake-up method, characterized in that the wake-up signal is transmitted so that only the terminal wakes up. The method of claim 9,
The WLAN AP wakes up only the first terminal pre-selected as the individual ID among the first terminal, the second terminal, and the third terminal capable of receiving radio waves of the WLAN AP based on the individual ID function in the wake-up frame. Wireless wake-up method, characterized in that to transmit the wake-up signal. The method of claim 9,
The WLAN AP is configured to control the beacon transmission power of the WLAN AP so that only the first terminal close to the WLAN AP among the first terminal, the second terminal, and the third terminal can receive a wake-up signal. A wireless LAN wake-up method. The method of claim 9,
The wireless LAN AP, so that only the second terminal of the first terminal, the second terminal, and the third terminal capable of receiving radio waves of the wireless LAN AP based on the broadcasting function in the wake-up frame can receive a wake-up signal A wireless LAN wake-up method, characterized in that to perform beamforming. The method of claim 9,
When the WLAN AP receives a wake-up frame of another WLAN AP from the WLAN AP, the WLAN AP receives a wake-up signal to the first terminal, the second terminal, and the third terminal capable of receiving radio waves from the WLAN AP. Wireless LAN wake-up method, characterized in that it does not transmit.

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