KR102136146B1 - System, apparatus, method and program for transmitting and receiving power and data using composite structure superframe - Google Patents

Abstract

According to the present invention, a power and data transmission and reception system using a complex structure superframe comprises: an access point device; and a plurality of sensor devices which receive power from the access point device or transmit data to the access point device. The access point device and the plurality of sensor devices may transmit and receive power and data using the superframe including: a beacon period (BP) in which beacon frames are transmitted and received; a contention access period (CAP) in which a channel time access period (CTAP) allocation request message and a CTAP allocation notification message are transmitted and received; and a CTAP in which power and data are transmitted and received.

Description

System, apparatus, method and program for transmitting and receiving power and data using composite structure superframe}

The present invention relates to a power and data transmission and reception system using a composite structure superframe, an access point device, a method and a program, and more specifically, access using a superframe including a beacon section, a contention access section and a channel time access section. It relates to a system, an access point device, a method and a program for transmitting and receiving power and data between a point and a plurality of sensor devices.

Recently, with the development of information and communication technology, Internet of Things (IoT) technology has been applied to various fields such as smart home, smart healthcare, and factory automation. This IoT technology consists of a number of sensor devices that are wirelessly connected to the access point device. A number of sensor devices detect changes in the surrounding environment and transmit the sensed sensing data to the access point device.

At this time, the sensor device generally has a limited power source, resulting in high maintenance costs due to battery replacement and shortening of device life. To solve this problem, wireless frequency-based Simultaneous Wireless Information and Power Transfer (SWIPT) technology has recently been spotlighted.

In SWIPT technology, effective medium access control (MAC) application is essential to maintain a stable connection to a wireless channel of multiple sensor devices to support smooth power and data transmission and reception.

However, in the conventional SWIPT technology, the use of a competition-based MAC utilizing CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) is generally considered, so there is a problem of low resource utilization, and priority is given to data transmission and reception. There is a problem that transmission is not performed.

Accordingly, in the SWIPT technology, in a connection to a wireless channel of a plurality of sensor devices and power and data transmission/reception, a beacon period (BP), a contention access period (CAP), and a channel time access period (Channel) The need for a composite structure superframe including Time Access Period (CTAP) has emerged.

The present invention uses a composite superframe including a beacon section, a regular access section and a contention access section including a notification contention access section, and a power channel time access section and a channel time access section including a data channel time access section. It is possible to provide a power and data transmission and reception system using a composite superframe capable of transmitting and receiving power and data between an access point device and a plurality of sensor devices.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, it will be readily appreciated that the objects and advantages of the present invention can be realized by means of the appended claims and combinations thereof.

Power and data transmission and reception system using a composite structure superframe according to the present invention includes an access point device; And a plurality of sensor devices that receive power from the access point device or transmit data to the access point device.

Preferably, the access point device and the plurality of sensor devices include a beacon period (BP) in which a beacon frame is transmitted and received; A contention access period (CAP) in which a channel time access period (CTAP) allocation request message and a CTAP allocation notification message are transmitted and received; And a channel time access period (CTAP) through which power and data are transmitted and received, power and data may be transmitted and received using a superframe.

Preferably, the CAP is a regular contention access period (RCAP) in which the CTAP allocation request message is transmitted and received in a competitive manner; And a notification contention access period (NCAP) in which the CTAP allocation notification message informing the allocation of CTAP is transmitted and received.

Preferably, the RCAP may receive an acknowledgment message when the first waiting time elapses from the time when the CTAP allocation request message is received.

Preferably, the NCAP may transmit the CTAP allocation notification message when the second waiting time elapses from the start time of the NCAP.

Preferably, the CTAP includes a power channel time access period (PCTAP) in which power is transmitted and received; And a data channel time access period (DCTAP) in which data is transmitted and received.

Preferably, the PCTAP includes a plurality of power slots through which power is transmitted from the access point device to any one of the plurality of sensor devices, and a third waiting time elapses from a start time point of the plurality of power slots. When the power is transmitted from the access point device to any one of the plurality of sensor devices.

Preferably, the DCTAP includes a plurality of data slots through which data is transmitted from any one of the plurality of sensor devices to the access point device, and a fourth waiting time elapses from a start time point of the plurality of data slots. When the data is transmitted from any one of the plurality of sensor devices to the access point device.

The access point device for transmitting and receiving power and data using the composite structure superframe according to the present invention includes a processor for transmitting power or receiving data from a plurality of sensor devices using the superframe.

A method for transmitting and receiving power and data using a composite structure superframe according to the present invention comprises: transmitting power from an access point device to a plurality of sensor devices; And transmitting data from the access point device to the plurality of sensor devices or transmitting data from the plurality of sensor devices to the access point device.

The computer program according to the present invention may be stored in a recording medium readable by a computer so as to be combined with a hardware computer, and to perform a method of transmitting and receiving power and data using the composite superframe.

According to the present invention, the power transmission rank of the power slot included in the power channel time access interval is determined based on the remaining power information of the sensor device, and the data transmission/reception rank of the data slot included in the data channel time access interval is determined by the sensor device. By determining based on the residual data information, data and power can be transmitted and received in preparation for discharge of the sensor device.

1 is a view showing the configuration of a power and data transmission and reception system using a composite structure superframe according to an embodiment of the present invention.
2 is a diagram showing the configuration of a composite superframe used by a power and data transmission and reception system using a composite superframe according to an embodiment of the present invention.
3 is a view for explaining a process of transmitting and receiving power and data of a power and data transmission and reception system using a composite structure superframe according to an embodiment of the present invention.
4 is a view for explaining a process of setting the start time of the NCAP power and data transmission and reception system using a composite structure superframe according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that the embodiments of the present invention include various modifications, equivalents, and/or alternatives. In connection with the description of the drawings, similar reference numerals may be used for similar elements.

In this document, expressions such as "have", "can have", "includes", or "can contain" are the presence of the corresponding feature (eg, a component such as a numerical value, function, operation, or part). And does not exclude the presence of additional features.

In this document, expressions such as “at least one of A or B”, “at least one of A or/and B”, or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” includes (1) at least one A, (2) at least one B, Or (3) all cases including both at least one A and at least one B.

As used herein, expressions such as “first”, “second”, “first”, or “second” may modify various components, regardless of order and/or importance, and denote one component. It is used to distinguish from other components, but does not limit the components. For example, the first user device and the second user device may indicate different user devices regardless of order or importance. For example, the first component may be referred to as a second component without departing from the scope of rights described in this document, and similarly, the second component may also be referred to as a first component.

Some component (eg, first component) is "(functionally or communicatively) coupled with/to" another component (eg, second component), or " When referred to as "connected to", it should be understood that any of the above components may be directly connected to the other component or may be connected through another component (eg, a third component). On the other hand, when it is mentioned that a component (eg, a first component) is “directly connected” or “directly connected” to another component (eg, a second component), the component may be It can be understood that other components (eg, the third component) do not exist between the other components.

As used herein, the expression "configured to (or configured)" depends on the context, for example, "having the capacity to" )", "designed to", "adapted to", "made to", or "capable of" . The term "configured (or set) to" may not necessarily mean only "specifically designed to" in hardware. Instead, in some situations, the expression "device configured to" may mean that the device "can" with other devices or parts. For example, the phrase “processors configured (or set) to perform A, B, and C” may be performed by executing a dedicated processor (eg, an embedded processor) to perform the operation, or one or more software programs stored in memory. , It may mean a general-purpose processor (eg, CPU or application processor) capable of performing the corresponding operations.

The terms used in this document are only used to describe specific embodiments, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person skilled in the art described in this document. Among the terms used in this document, terms defined in the general dictionary may be interpreted as having the same or similar meanings in the context of the related art, and in an ideal or excessively formal sense, unless explicitly defined in this document. Is not interpreted. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

1 is a view showing the configuration of a power and data transmission and reception system (hereinafter referred to as'transmission and reception system') using a composite structure superframe according to an embodiment of the present invention.

Referring to FIG. 1, the transmission/reception system 10 may include an access point device 100 and a plurality of sensor devices 200.

The transmission/reception system 10 may be a star topology structure in which all the plurality of sensor devices 200 are connected to the central access point device 100.

The access point device 100 allocates resources for power transmission and data reception based on each of the power transmission request and data reception request received from the plurality of sensor devices 200.

In this case, the access point device 100 may transmit power to the plurality of sensor devices 200, receive data from the plurality of sensor devices 200, or transmit data to the plurality of sensor devices 200.

Meanwhile, the access point device 100 may operate in a half-duplex mode with the plurality of sensor devices 200. That is, the uplink and downlink may not be simultaneously performed between the access point device 100 and the plurality of sensor devices 200.

In one embodiment, the access point device 100 may be a hybrid access point, and the plurality of sensor devices 200 may be sensors that transmit sensing data sensing the surrounding environment to the access point device 100.

Meanwhile, the transmission/reception system 10 may use a time division SWIPT (hereinafter, TS SWIPT) method using a time division method for transmitting and receiving power and data.

2 is a diagram showing the configuration of a composite superframe structure used by the transmission/reception system 10 according to an embodiment of the present invention.

Referring to FIG. 2, the superframe may include a beacon period (BP), a contention access period (CAP), and a channel time access period (CTAP).

The BP may be a section in which the beacon frame is transmitted from the access point device 100 to the plurality of sensor devices 200.

In the CAP, a channel time access period (CTAP) allocation request message is transmitted from a plurality of sensor devices 200 to the access point device 100, and in response to a CTAP allocation request message, a CTAP allocation notification message is sent to the access point. It may be a section transmitted from the device 100 to the plurality of sensor devices 200.

Here, the CTAP allocation request message may include one or more of a power transmission request, charging request power information, residual power information, data reception request, and reception data size information.

Specifically, the CAP may include a regular contention access period (RCAP) and a notification contention access period (NCAP).

RCAP is a CTAP allocation request message requesting CTAP allocation in a competitive manner is transmitted from a plurality of sensor devices 200 to the access point device 100, and the access point device 100 receives a CTAP allocation request message from the point in time. When the waiting time of 1 elapses, the reception confirmation message may be a section transmitted from the access point device 100 to the plurality of sensor devices 200.

Here, the first waiting time may be Short Interframe Space (SIFS).

The NCAP may be a section in which a CTAP allocation notification message informing a CTAP allocation is transmitted from the access point device 100 to the plurality of sensor devices 200 when the second waiting time elapses from the start time of the NCAP.

Here, the second waiting time may be a Tx Offset that is a waiting time used for reception preparation and protection time.

Meanwhile, the CTPA may be a section in which power and data are transmitted and received between the access point device 100 and the plurality of sensor devices 200.

Specifically, the CTPA may include a power channel time access period (PCTAP) and a data channel time access period (DCTAP).

The PCTAP may include a plurality of power slots in which power is transmitted from the access point device 100 to the plurality of sensor devices 200. Each of the plurality of power slots may be a section in which power is transmitted from the access point device 100 to any one of the plurality of sensor devices 200 when the third waiting time elapses from the start time.

Here, the third waiting time may be a Tx Offset that is a waiting time used for reception preparation and protection time.

The DCTAP may include a plurality of data slots through which data is transmitted from the plurality of sensor devices 200 to the access point device 100. Each of the plurality of data slots may be a section in which data is transmitted from any one of the plurality of sensor devices 200 to the access point device 100 when the fourth waiting time elapses from the start time. Here, the fourth waiting time may be a Tx Offset that is a waiting time used for reception preparation and protection time.

In addition, each of the plurality of data slots is a section in which an acknowledgment message is transmitted from the access point device 100 to the plurality of sensor devices 200 when the fifth waiting time elapses from the time when data is received by the access point device 100. Can be

Here, the fifth waiting time may be Short Interframe Space (SIFS).

Meanwhile, the power transmission rank between a plurality of power slots and the data reception rank between a plurality of data slots are determined by the access point device 100, and the start time of the NCAP can be set by the access point device 100.

3 is a view for explaining a process of transmitting and receiving power and data of the transmitting and receiving system 10 according to an embodiment of the present invention.

Referring to FIG. 3, the plurality of sensor devices 200 may transmit a CTAP assignment request message to the access point device 100 using a Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) technology during CAP.

Specifically, the plurality of sensor devices 200 transmits a CTAP assignment request message to the access point device 100 during the RCAP included in the CAP, and the access point device 100 receives first from the time when the CTAP assignment request message is received. When the waiting time has elapsed, an acknowledgment message may be transmitted to the sensor device 200 that has transmitted the CTAP allocation request message.

In this case, when the residual power is less than a preset threshold power, the plurality of sensor devices 200 may transmit the power transmission request to the access point device 100 by including the CTAP allocation request message.

Thereafter, the access point device 100 may determine a power transmission rank between a plurality of power slots and a data reception rank between a plurality of data slots based on the CTAP assignment request message.

Specifically, the access point device 100 may determine the power transmission priority of the power slot corresponding to the corresponding sensor device 200 as a lower priority, as the remaining power indicated by the residual power information received from the sensor device 200 is lower.

That is, the access point device 100 checks whether a power transmission request is included whenever a CTAP assignment request message is received from the sensor device 200, and when a CTAP assignment request message including a power transmission request is received, By comparing residual powers indicated by the residual power information received so far, the power transmission order of each power slot of the corresponding sensor device 200 may be determined in the order of the lowest residual power.

Accordingly, the access point device 100 may first transmit power to the sensor device 200 having low residual power.

In addition, the access point device 100 may determine the priority of receiving data in a data slot corresponding to the corresponding sensor device 200 as the residual power indicated by the residual power information received from the sensor device 200 is lower.

That is, the access point device 100 checks whether a data reception request is included whenever a CTAP allocation request message is received from the sensor device 200, and when a CTAP allocation request message including a data reception request is received, By comparing the residual powers indicated by the residual power information received so far, the data reception rank of each data slot of the corresponding sensor device 200 may be determined in the order of the lowest residual power.

Accordingly, the access point device 100 may first receive data from the sensor device 200 having low residual power.

Thereafter, when the start time of the NCAP arrives, the access point device 100 may transmit a CTAP allocation notification message to the plurality of sensor devices 200 after the second waiting time.

Here, the CTAP allocation notification message may include the power transmission rank of the power slot and the data reception rank of the data slot.

After the NCAP, the access point device 100 may transmit power to the plurality of sensor devices 200 during CTAP and receive data from the plurality of sensor devices 200.

Specifically, the access point device 100 may transmit power to the sensor device 200 corresponding to the power slot according to the power transmission order during PCTAP. At this time, the access point device 100 may transmit power to the sensor device 200 when the third waiting time elapses from the start time of the power slot.

In addition, the access point device 100 may transmit data from the sensor device 200 corresponding to the data slot according to the data reception rank during DCTAP. At this time, the access point device 100 may receive data from the sensor device 200 when the fourth waiting time elapses from the start time of the data slot. Thereafter, the access point device 100 may transmit an acknowledgment message to the sensor device 200 when the fifth waiting time elapses from the time when the data is received.

4 is a diagram for explaining a process of setting the start time of the NCAP by the transmitting and receiving system 10 according to an embodiment of the present invention.

Referring to FIG. 4 further, when the CTAP allocation request message is received, the access point device 100 receives the first time length (T _Current ) of the time elapsed from the start time of the superframe to the current time, and the previously allocated NCAP. The sum of the time lengths of the second time length (L _NCAP ), the third time length of the previously allocated CTAP (L _CTAP ), and the time required for the CTAP allocation corresponding to the CTAP allocation request message, and the sum of the time lengths of the L4 It is possible to compare the long and short between the fifth time length (L _Superframe ) of the frame, and set the start time of the NCAP (ST _NCAP ) based on the comparison result.

Here, the first time length (T _Current ) and the third time length (L _CTAP ) are initially set to “0”, and the start time of the _NCAP (ST _NCAP ) is set equal to the fifth time length (L _Superframe ). The second time length of the _NCAP (L _NCAP ) may be set as the sum of the 16th time length (L _TxOffset1 ) of the second waiting time of the NCAP and the 17th time length (L _CTAPAN ) of the CTAP allocation notification message transmission interval. have.

First, when the CTAP assignment request message is received, the access point device 100 receives the sixth time length (L _SIFS1 ) of the first waiting time according to the reception of the CTAP assignment request message, and the reception confirmation message corresponding to the CTAP assignment request message. can calculate the transmission time 7 times length (L _Ack1), power eighth time length (L _PSOLT) and 9 times the length (L _DSOLT) of data slots of the slot.

Specifically, the access point device 100 calculates the tenth time length (L _TXOffset2 ) of the third waiting time of the power slot and the eleventh time length (L _Power ) of the power transmission section of the power slot, and the tenth time length The eighth time length L _PSOLT of the power slot may be calculated by adding (L _TXOffset2 ) and the eleventh time length (L _Power ).

In this case, the access point device 100 may calculate the eleventh time length L _Power by using the ratio of the power required by each of the charging request power information and the charging power information per hour.

Here, the charging request power information may be information indicating power required to be charged to the sensor device 200, and the charging power per hour information may be information indicating power that can be charged per second to the sensor device 200.

The access point device 100 may calculate the eleventh time length L _Power using Equation 1 below.

Here, L ⁱ _Power is the eleventh time length of the power transmission section of the power slot corresponding to the sensor device having the index _i , P _i is the charging request power indicated by the charging request power information of the sensor device having the index i, P _HE is the charging power per hour indicated by the charging power per hour information, d _i is the distance between the access point device and the sensor device with index i, α is the path loss parameter, and h is the propagation power gain from the access point device to the sensor device. Is a constant, P _Tx is the transmit power of the access point device, RSSI _i is the received signal strength indicator of the sensor device with index i, and A is the received signal strength at 1 meter distance.

On the other hand, the access point device 100 is the 12th length of the fourth waiting time of the data slot (L _TXOffset3 ), the 13th length of the data receiving interval of the data slot (L _Data ), and the fifth waiting time according to the data reception The 14th time length (L _SIFS2 ), the 15th time length (L _Ack2 ) of the transmission time of the acknowledgment message corresponding to data reception is calculated, and the 12th time length (L _TXOffset3 ) and the 13th time length (L _Data ), the 14th time length (L _SIFS2 ) and the 15th time length (L _Ack2 ) may be added to calculate the ninth time length (L _DSOLT ) of the data slot.

At this time, the access point device 100 may calculate the thirteenth time length L _Data using the received data size and the data transmission rate indicated by the received data size information.

Here, the received data size information may be information indicating the size of data transmitted from the sensor device 200 to the access point device 100.

The access point device 100 may calculate the thirteenth time length L _Data using Equation 2 below.

Here, L ⁱ _Data is the thirteenth time length of the data receiving section of the data slot corresponding to the sensor device having the index _i , DS _i is the size of data received by the access point device from the sensor device having the index i, data The rate may be a data transmission rate between the sensor device and the access point device.

Thereafter, the access point device 100 adds the sixth time length L _SIFS1 , the seventh time length L _Ack1 , the eighth time length L _PSOLT , and the ninth time length L _DSOLT for the fourth time. It can be calculated by the length L4.

The access point device 100 includes a sum of time lengths of a first time length (T _Current ), a second time length (L _NCAP ), a third time length (L _CTAP ), and a fourth time length (L4) and a fifth time length After comparing the long and short between (L _Superframe ), if the sum of the time lengths is shorter than the fifth time length (L _Superframe ), it may be compared whether the previously set NCAP start time and the superframe end time are the same.

If the start time of the previously set NCAP and the end time of the superframe are the same, the access point device 100 has a second time length (L _NCAP ), an eighth time length (L _PSOLT ), and a start time of the previously set NCAP. The start time of the NCAP (ST _NCAP ) may be set by subtracting the ninth time length L _DSOLT .

Conversely, if the start time of the previously set NCAP and the end time of the superframe are not the same, the access point device 100 has an eighth time length (L _PSOLT ) and a ninth time length (L) from the previously set NCAP start time. _DSOLT ) can be subtracted to set the start time of _NCAP (ST _NCAP ).

On the other hand, the access point device 100 is the first time length (T _Current ), the second time length (L _NCAP ), the third time length (L _CTAP ) and the fourth time length (L4) of the sum of the time length and the fifth After comparing the long and short between the time length (L _Superframe ), if the sum of the time length is equal to the fifth time length (L _Superframe ) or longer than the fifth time length (L _Superframe ), the previously set start time of the NCAP is maintained. Can be set.

On the other hand, the method for transmitting and receiving power and data using a composite structure superframe according to an embodiment of the present invention includes transmitting power from an access point device to a plurality of sensor devices and transmitting data from an access point device to a plurality of sensor devices or And transmitting data from a plurality of sensor devices to an access point device.

At this time, the access point device and the plurality of sensor devices may transmit and receive power and data using a superframe including BP, CAP and CTAP.

On the other hand, a computer program according to an embodiment of the present invention is combined with a computer that is hardware, and a recording medium readable by a computer to perform a method of transmitting and receiving power and data using a composite superframe according to an embodiment of the present invention Can be stored in.

The steps of a method or algorithm described in connection with an embodiment of the present invention may be implemented directly in hardware, a software module executed by hardware, or a combination thereof. The software modules may include random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside on any type of computer readable recording medium well known in the art.

So far, the present invention has been focused on preferred embodiments. Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an explanatory point of view rather than a restrictive point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be interpreted as being included in the present invention.

As described above, although the present invention has been described by a limited number of embodiments and drawings, the present invention is not limited by this, and the technical idea of the present invention and the following will be described by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the equivalent scope of the claims to be described.

10: Power and data transmission and reception system using a composite superframe
100: access point device
200: a plurality of sensor devices

Claims (10)

Access point devices; And
It includes; a plurality of sensor devices for receiving power from the access point device or transmitting data to the access point device;
The access point device and the plurality of sensor devices
Beacon Period (BP) in which beacon frames are transmitted and received;
A contention access period (CAP) in which a channel time access period (CTAP) allocation request message and a CTAP allocation notification message are transmitted and received; And
Characterized in that the power and data is transmitted and received using a superframe including a channel time access period (CTAP) in which power and data are transmitted and received.
Power and data transmission and reception system using a composite superframe.
According to claim 1,
The CAP is
A regular contention access period (RCAP) in which the CTAP allocation request message is transmitted and received in a contention manner; And
And a notification contention access period (NCAP) in which the CTAP allocation notification message informing the allocation of CTAP is transmitted and received.
Power and data transmission and reception system using a composite superframe.
According to claim 2,
The RCAP is
When the first waiting time elapses from the time when the CTAP allocation request message is received, a reception confirmation message is transmitted.
Power and data transmission and reception system using a composite superframe.
According to claim 2,
The NCAP is
When the second waiting time has elapsed from the start time of the NCAP, the CTAP allocation notification message is transmitted.
Power and data transmission and reception system using a composite superframe.
According to claim 1,
The CTAP
A power channel time access period (PCTAP) in which power is transmitted and received; And
And a data channel time access period (DCTAP) in which data is transmitted and received.
Power and data transmission and reception system using a composite structure superframe.
The method of claim 5,
The PCTAP
A plurality of power slots through which power is transmitted from the access point device to any one of the plurality of sensor devices,
When a third waiting time elapses from the start time point of the plurality of power slots, power is transmitted from the access point device to any one of the plurality of sensor devices.
Power and data transmission and reception system using a composite superframe.
The method of claim 5,
The DCTAP
And a plurality of data slots through which data is transmitted from any one of the plurality of sensor devices to the access point device,
When a fourth waiting time elapses from the start time point of the plurality of data slots, data is transmitted from any one of the plurality of sensor devices to the access point device.
Power and data transmission and reception system using a composite superframe.
Includes a processor for transmitting power or receiving data from a plurality of sensor devices using a superframe;
The super frame
BP to which the beacon frame is transmitted and received;
A CAP to which the CTAP allocation request message and the CTAP allocation notification message are transmitted and received; And
CTAP for transmitting and receiving power and data; characterized in that it comprises a
An access point device that transmits and receives power and data using a composite structure superframe.
Transmitting power from the access point device to the plurality of sensor devices; And
And transmitting data from the access point device to the plurality of sensor devices or data from the plurality of sensor devices to the access point device.
The access point device and the plurality of sensor devices
BP to which the beacon frame is transmitted and received;
A CAP to which the CTAP allocation request message and the CTAP allocation notification message are transmitted and received; And
CTAP for transmitting and receiving power and data; characterized in that for transmitting and receiving power and data using a superframe containing
A method of transmitting and receiving power and data using a composite superframe.
A computer program stored in a recording medium readable by a computer to perform the method of claim 9 in combination with a computer that is hardware.

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