KR101713474B1 - Method and device for communicating data - Google Patents

Abstract

Various embodiments of the present invention relate to a method for data communication based on channel information. According to an embodiment of the present invention, a method for data communication based on information about a channel of an apparatus may comprise the steps of: determining a volume of first data to be transmitted; receiving information, including at least one of states of channels of nodes connected to one or more external devices and volumes of data to be transmitted, from the one or more external devices; comparing the volume of the first data, which is to be transmitted, with the volumes, which are the volumes of the data to be transmitted and are received from the one or more external devices, selecting second data having a volume closest to the volume of the first data to be transmitted, and selecting a first external device configured to transmit the second data; constructing a full duplex communication node including the first external device and a second external device determined to receive the first data; determining at least one full duplex communication channel by comparing a state of a channel included in the full duplex communication node with a state of a channel included in a node other than the full duplex communication node based on the received states of channels of the nodes; and performing communication on the first and second data via the full duplex communication node including the determined full duplex communication channel.

Description

[0001] METHOD AND DEVICE FOR COMMUNICATION DATA [0002]

Various embodiments of the present invention are directed to a data communication method based on channel information, and more particularly, to a method and apparatus for establishing a channel and communicating data based on channel information.

Wireless LAN usage rates are rapidly increasing due to the rapid spread of mobile devices such as smart phones and tablet PCs. In order to cover the rapid increase of such wireless LAN users, the installation of a wireless LAN access point (AP) is also rapidly increasing. As a result, the environment of the wireless LAN gradually changes into a dense environment for both the wireless LAN terminal and the AP, and the communication quality experienced by the actual user is deteriorated due to the interference and the channel competition caused thereby. In IEEE 802.11, the HEW SG (High Efficiency WLAN Study Group) was launched in May 2013 with the goal of improving the actual performance of wireless LAN in indoor and outdoor dense wireless LAN terminals and AP environment. Then, in May 2014, 802.11ax TG Group) have begun full-fledged standardization work. One of the PHY / MAC technologies under consideration for improving spectrum efficiency and area throughput in 802.11ax is Orthogonal Frequency Division Multiple Access (OFDMA), full duplex. OFDMA can allocate resources to users in both time and frequency domains, thereby enabling simultaneous channel access to multiple users, thereby increasing channel utilization. One of the other considerations is full duplex communication, which can transmit and receive simultaneously on the same frequency resource, unlike half duplex communication, which can improve throughput up to 2 times. In 802.11ax, it is also referred to as STR (Simultaneous Transmit and Receive). Self-interference is the biggest problem in the PHY layer of full-duplex communication. To solve this problem, there are many researches on analog or digital self-interference cancellation.

In a wireless interface comprising wireless subframes, the patent document WO2013-093434 discloses that in a wireless interface comprising wireless subframes, the wireless subframe includes a plurality of symbols, wherein a symbol located at the end of the subframe is a communication link between a device operating in a full- And a corresponding symbol supports a low rate channel of a communication link that communicates in a half duplex mode. However, the present invention provides a device and method for supporting a low rate channel of a communication link that communicates in half duplex mode, There is a limit to the flexibility of channel assignment.

WO2013-093434 (Published patent)

The research on wireless LAN based on existing OFDMA system is mainly based on CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance), or the research that improves the problems occurred in these studies. This CSMA / CA based OFDMA WLAN MAC research is based on the competition method, and therefore there is a limit in terms of channel utilization and collision probability. In order to overcome these limitations, a wireless LAN MAC study for channel allocation more efficient than the competition method is needed.

According to various embodiments of the present invention, it is possible to provide a data communication method and apparatus based on channel information, which allocates channels efficiently in terms of channel utilization and collision probability in a wireless communication system of an electronic device.

It is also possible to provide a method and apparatus for data communication based on channel information, which improves the data throughput of the full-duplex communication by controlling channels assigned to nodes connected between the electronic device and the external device.

According to an embodiment of the present invention, there is provided a method of communicating data based on channel information of a device, comprising: checking a size of first data to be transmitted; Receiving information including at least one of a channel status of each connected node and a size of data to be transmitted from at least one external device; Comparing the size of the first data to be transmitted and the size of the data to be transmitted received from the at least one external device and transmitting the second data and the second data having a size most similar to the size of the first data to be transmitted Selecting a first external device to be used as the first external device; Configuring a full-duplex communication node comprising the first external device and a second external device determined to receive the first data; Determining at least one full-duplex communication channel by comparing a channel state included in the full-duplex communication node and a channel state included in the node other than the full-duplex communication node based on the channel state of the received node; And communicating the first data and the second data through the full-duplex communication node including the determined full-duplex communication channel.

According to various embodiments, the full-duplex communication channel may be determined based on the number of idle channels common to the idle channel included in the full-duplex communication node and the idle channel included in the node other than the full-duplex communication .

According to various embodiments, the full-duplex communication channel may be configured such that when the number of common idle channels is greater than one-half of the number of idle channels included in the full-duplex communication node, And may include 1/2 channels of the number of channels.

According to various embodiments, the full-duplex communication channel may be configured such that if the common idle channel number is less than or equal to one-half the number of idle channels included in the full-duplex communication node, State < / RTI > channels.

According to various embodiments, the common idle channel may comprise two or more consecutive channels.

According to an embodiment of the present invention, there is provided a data communication apparatus based on channel information, comprising: a communication interface for performing full-duplex communication; A memory for storing information received from at least one external device; And a processor coupled to the communication interface and the memory, the method comprising: checking from the memory the size of the first data to be transmitted; determining at least one of the channel status of each connected node from the at least one external device, And transmitting the data to the external device via the communication interface, comparing the size of the first data to be transmitted and the size of the data to be transmitted received from the external device, Selecting a first external device to transmit the second data of the first data and the second data, and a second external device determined to receive the first external device and the first data via the communication interface, , The step of configuring Determining at least one full-duplex communication channel based on a channel status of the full-duplex communication node and a channel status included in the nodes other than the full-duplex communication, based on the channel status of the full- And communicating the first data and the second data via the full-duplex communication node.

According to various embodiments, the processor is configured to determine the full-duplex communication channel based on the number of idle channels common to the idle channel included in the full-duplex communication node and the idle channel included in the node other than the full- You can decide.

According to various embodiments, when the number of channels in the common idle state is greater than one-half of the number of idle channels included in the full-duplex communication node, the processor calculates the number of idle channels included in the full- Half channel of the full duplex communication channel.

According to various embodiments, the processor may be configured to determine, when the common idle channel number is less than or equal to one-half the number of idle channels included in the full-duplex communication node, All channels may be included in the full duplex communication channel.

According to various embodiments, the processor may determine the common idle channel, including two or more consecutive channels.

According to various embodiments of the present invention, the throughput of the transmitted and received data can be improved by controlling the channels assigned to the full-duplex communication based on the channel conditions of the electronic device and the node connected to the external device.

According to various embodiments of the present invention, it is possible to effectively control a collision occurring at a node by controlling channels assigned to full-duplex communication based on the channel status of the node connected to the electronic device and the external device.

1 illustrates a network environment including an electronic device and an electronic device according to an embodiment of the present invention.
FIG. 2 illustrates a flow of an operation of assigning a channel and transmitting / receiving data based on a node state in an electronic device according to an embodiment of the present invention.
3 illustrates a network environment and transmission / reception data communicating with at least one external device in an electronic device according to an embodiment of the present invention.
4 illustrates a network in which the number of common idle channels in an electronic device according to an embodiment of the present invention is greater than one half of the full duplex idle channel.
5 illustrates a network in which the number of common idle channels in an electronic device according to one embodiment of the present invention is less than one half of the full duplex idle channel.
6 illustrates a data transmission schedule of full duplex communication in an electronic device according to an embodiment of the present invention.
FIG. 7 illustrates a full-duplex communication and a non-busy communication state including three APs and five external devices in a communication environment according to an embodiment of the present invention.
FIG. 8 is a graph illustrating a throughput according to the number of packets when there are five channels in a full-duplex communication network according to an exemplary embodiment of the present invention.
9 is a graph illustrating a throughput according to the number of packets when 11 channels are used in a full-duplex communication network according to an exemplary embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, it is to be understood that the invention is not limited to the specific embodiments thereof, And equivalents and alternatives falling within the spirit and scope of the invention. In order to clearly illustrate the present invention in the drawings, parts not related to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In various embodiments of the present invention, expressions such as 'or', 'at least one', etc. may denote one of the words listed together, or may represent a combination of two or more. For example, 'A or B', 'At least one of A and B' may include only one of A or B, and may include both A and B.

In various embodiments of the present invention, expressions such as 'first', 'second', 'first', 'second', etc. may describe various components, but they must mean the order, . For example, the first device and the second device are both devices and may represent different devices. Also, unless the elements of the configuration, function, operation, etc. of the first device are the same as or similar to the second device, the first device can be named as the second device, without departing from the scope of the various embodiments of the present invention, Similarly, the second device may also be termed the first device.

In the various embodiments of the present invention, when an element is referred to as being "connected" or "connected" to another element, the elements may be directly connected or connected, It should be understood that there may be one and the same time. On the other hand, if an element is referred to as being 'directly connected' or 'directly connected' to another element, it should be understood that no other element exists between the elements.

The terms used in various embodiments of the present invention are intended to illustrate a specific embodiment and are not to be construed as limiting the invention, for example, the singular forms "a," "an, ≪ / RTI >

It is to be understood that devices (or electronic devices) in accordance with various embodiments of the present invention may be replaced by other devices of the same or similar type, unless explicitly stated to the contrary, An electronic device may be comprised of one or more of the various devices described. For example, the device may be provided as a structure that includes at least a portion of the devices described, or at least some of the functionality of the device.

1 illustrates a network environment including an electronic device and an electronic device according to an embodiment of the present invention. The electronic device 101 may include at least one of a bus 110, a processor 120, a memory 130, an input / output interface 140, and a communication interface 160, Information-based data communication can be performed.

The bus 110 may be a circuit that interconnects the components described above and communicates communication signals (e.g., control messages) between the components described above.

The processor 120 receives instructions from other components (e.g., memory 130, input / output interface 140, communication interface 160) described above via bus 110, It is possible to decode the instruction and execute the operation or data processing according to the decoded instruction.

Memory 130 may store instructions or data received from processor 120 or other components (e.g., input / output interface 140 or communication interface 160, etc.) or generated by processor 120 or other components Can be stored. The memory 130 may include programming modules such as, for example, a kernel 131, a middleware 132, an application programming interface (API) 133, or an application 134. Each of the above-described programming modules may be composed of software, firmware, hardware, or a combination of at least two of them.

The kernel 131 may include system resources (e. G., Bus 110 (e. G., ≪ / RTI > (E.g., processor 120, memory 130, etc.). The kernel 131 may also provide an interface through which the middleware 132, the API 133 or the application 134 may access and control individual components of the electronic device 101. [

The middleware 132 can act as an intermediary for the API 133 or the application 134 to communicate with the kernel 131 to exchange data. The middleware 132 may also be configured to communicate system resources (e.g., bus 110) of the electronic device 101 to at least one application of the application 134, for example in connection with work requests received from the application 134. [ (E.g., scheduling or load balancing) of a work request using a method such as assigning a priority that can be used by a processor (e.g., processor 120, memory 130, etc.).

The API 133 is an interface for the application 134 to control the functions provided by the kernel 131 or the middleware 132 and includes at least one interface for controlling the functions of the application 134 such as file control, Interface or function (e.g., command).

The application 134 may be an application related to the exchange of information between the electronic device 101 and an external electronic device (e.g., electronic device 102). Applications associated with information exchange may include, for example, a notification relay application for communicating specific information to an external electronic device, or a device management application for managing an external electronic device. According to various embodiments, application 134 may include applications that are additionally specified according to attributes (e.g., type of electronic device) of an external electronic device (e.g., electronic device 102 and / or electronic device 103) have.

The input / output interface 140 may receive commands or data input by a user via a sensor (e.g., an acceleration sensor, a gyro sensor) or an input device (e.g., a keyboard or a touch screen) To memory 120, memory 130, or communication interface 160. For example, the input / output interface 140 may provide data to the processor 120 about the user's touch input through the touch screen. The input / output interface 140 may also be configured to send commands or data received from the processor 120, the memory 130, or the communication interface 160 via the bus 110 to an output device ). ≪ / RTI > For example, the input / output interface 140 can output the voice data processed through the processor 120 to the user through the speaker.

The communication interface 160 may connect communications between the electronic device 101 and an external device (e.g., electronic device 102, electronic device 103, or server 106). For example, the communication interface 160 may be connected to the network 162 via wireless or wired communication to communicate with external devices.

Wireless communication may include, for example, wireless fidelity, Bluetooth, near field communication (NFC), global positioning system (GPS), orthogonal frequency division multiplexing (OFDM), orthogonal frequency division multiple access (OFDMA) (LTE), long term evolution-advanced (LTE), code division multiple access (CDMA), wideband code division multiple access (WCDMA), universal mobile telecommunications system (UMTS), WiBro or GSM mobile communications, and at least some of the above-described communication standards and communication schemes may be provided in cellular communication.

The wired communication may include at least one of, for example, a universal serial bus (USB), a high definition multimedia interface (HDMI), a recommended standard 232 (RS-232) or a plain old telephone service (POTS). The communication interface 160 may be included in one integrated chip (IC) or an IC package.

According to one embodiment of the present invention, the network 162 may be a telecommunications network. The communication network may include at least one of a computer network, an internet, an internet of things, or a telephone network. According to one embodiment, a protocol (e.g., a transport layer protocol, a data link layer protocol, or a physical layer protocol) for communication between the electronic device 101 and an external device includes an application 134, an application programming interface 133, 132, the kernel 131, or the communication interface 160. [0035]

In addition, the electronic device 101 may include at least one display (not shown). The display can display various information (e.g., multimedia data or text data) to the user. The display may also comprise a touch screen for inputting commands by touching or proximity touching the input means to the display.

Each of the above-described components of the electronic device according to various embodiments of the present invention may be comprised of one or more components, the names of which may vary depending on the type of electronic device. The electronic device according to various embodiments of the present invention may be configured to include at least one of the above-described components, and some components may be omitted or further include other additional components. In addition, some of the components of the electronic device according to various embodiments of the present invention may be combined into one entity, so that the functions of the components before being combined can be performed in the same manner.

Electronic device 101 may perform full duplex communication with at least one external electronic device (e.g., electronic device 102). At this time, the electronic device 101 may receive information related to the size of the data to be transmitted from the at least one external devices participating in the full-duplex communication to the electronic device 101, at least one other node in data transmission / Receive information related to transmission / reception, collision (or interference). For example, the electronic device 101 may receive information from at least one external device, including channel conditions, such as idle or busy, for at least one channel based on each connected node have.

The electronic device 101 can determine a data transmission / reception schedule so that the data transmission / reception throughput can be maximized based on the received information, and can transmit the determined schedule to external devices participating in full-duplex communication to perform full- have.

FIG. 2 illustrates a flow of an operation of assigning a channel and transmitting / receiving data based on a node state in an electronic device according to an embodiment of the present invention.

Referring to step 201, the electronic device 101 receives information relating to data transmission and receipt with a node from at least one external device (e.g., electronic device 102) connected in a wireless communication via the communication interface 160 . Here, the wireless communication linking the electronic device 101 with at least one external device may be a wireless communication using a communication protocol of full duplex wireless communication, non-busy (e.g., half duplex) And / or communication.

The electronic device 101 may receive status information of a communication node connected to the electronic device 101 from at least one external device (e.g., the electronic device 102), a status of at least one communication channel (e.g., idle or operational status) (Size, length) of the data to be transmitted by the external device, and a destination of the data.

Referring to step 203, the electronic device 101 may select a full duplex communication device to perform full duplex wireless communication (or full duplex communication) based on information received from at least one external device. In addition, the electronic device 101 may determine a full-duplex communication schedule for the selected full-duplex communication device.

The electronic device 101 may determine the data to be transmitted and the destination to which the data is to be transmitted, and may select the full duplex communication device based on the data to be transmitted and the information received from the at least one external device.

3, when the electronic device 101 determines the data 311 to be transmitted to the external device (STA B 305), it is confirmed that the destination for transmitting the data is the electronic device 101 (E.g., STA A, 303) to transmit data (e.g., data 313) of the same or similar size to the data 311 of the external devices.

Referring to step 205, the electronic device 101 can determine whether both nodes connected to external devices are connected by full duplex communication. At this time, if all the nodes connected to the electronic device 101 are operating in full duplex communication, the electronic device 101 can perform step 211, and if at least one node is operating on non- (Step 207).

Referring to step 211, the electronic device 101 determines if all nodes connected as determined in step 205 are operating in full duplex communication,

(1)

(One)

(N _FD , full duplex communication channel) allocated to full-duplex communication according to the number of idle channels (N _idle , hereinafter referred to as a full-duplex idle channel) of the node participating in the full-duplex communication. At this time, in the case of the idle channel determined as the full-duplex communication channel, it may be determined as the idle channel in the continuous case.

On the other hand, the electronic device 101 can determine the full-duplex communication channel based on the channel information of the node when at least one node is operating on non-busy communication. For example, referring to step 207, the electronic device 101 determines the number of common idle channels (hereinafter referred to as " common idle channels ") among the total number of _idle idle channels N _idle and the number of idle channels of nodes participating in non- Idle channel) is greater than one-half of the full-duplex idle channel (N _idle ).

For example, as shown in FIG. 4, it can be assumed that there are five channels communicating with the electronic device 101. The electronic device 101 is connected to four full duplex idle channels N _idle (e.g., subchannel 1, subchannel 2, subchannel 3, and subchannel 4) to identify based on the full-duplex channel status 411 and non- (E.g., subchannel 1, subchannel 2, and subchannel 3) among the three visions to be identified based on the number of the idle channels 413.

On the other hand, it can be assumed that there are five sub-channels (or channels) communicating with the electronic device 101, as shown in Fig. The electronic device 101 is connected to four full duplex idle channels N _idle (e.g., subchannel 1, subchannel 2, subchannel 3, and subchannel 4) to identify based on the full-duplex channel condition 511 and non- (E.g., subchannel 1 and subchannel 5) out of the two visions to be identified based on the number of idle channels (e.g., subchannel 1 and subchannel 5).

The electronic device 101 may perform step 209 if the common idle channel is greater than one-half of the full-duplex idle channel N _idle , and if the common idle channel is half of the full-duplex idle channel N _idle If equal or smaller, step 211 may be performed.

Referring to step 209, if the electronic device 101 determines in step 207 that the common idle channel is greater than one-half of the full-duplex idle channel N _idle ,

(2)

(2)

(N _FD ) as the number of full-duplex idle channels participating in communication with the electronic device 101 (N _idle ).

For example, referring to FIG. 4, the electronic device 101 may determine two channels, which are half of the four full-duplex idle channels, to be the full-duplex communication channel N _FD .

Referring to step 211, if the electronic device 101 determines that the common idle channel is equal to or less than one-half of the full-duplex idle channel N _idle , as determined in step 207, ),

(1)

(One)

(N _FD , full duplex communication channel) allocated to full-duplex communication according to the number of idle channels (N _idle , hereinafter referred to as a full-duplex idle channel) of the node participating in the full-duplex communication.

For example, referring to FIG. 5, the electronic device 101 may determine all four full-duplex idle channels as a full-duplex communication channel (N _FD ).

Referring to step 213, the electronic device 101 may perform full duplex communication and / or non-busy communication based on the determined full-duplex communication channel N _FD .

For example, when performing step 209, the electronic device 101 can perform full-duplex communication using a channel corresponding to one-half of the full-duplex idle channel, and when performing step 211, Full-duplex communication can be performed using both full-duplex idle channels.

At this time, the electronic device 101 will be able to perform non-busy communication using the remaining channels that are not allocated to the full-duplex communication channel (N _FD ).

The electronic device 101 may terminate the embodiment of Figure 2 when performing step 213. [

3 illustrates a network environment and transmission / reception data communicating with at least one external device in an electronic device according to an embodiment of the present invention.

3, the electronic device 101 includes at least one external device 303, STA A, external device 305, STA B, external device 307, STA C, From at least one of the devices 309 and STA D, status information of a communication node connected to the electronic device 101, status (e.g., idle or operating status) information of at least one communication channel, Size (size, length), and destination of the data.

The electronic device 101 selects one of the received information (e.g., data 313, data 317, and data 319) to which the electronic device 101 has been set as the destination of data transfer, The data to be transferred, for example, the data 311, which is set by the electronic device 101 to be transmitted to the external device 305, can be determined to be the same or similar in size to the data 313. [ The electronic device 101 can identify the external device 303 that is set to transmit the data 313 and can set the external device 303 as a full duplex pair. The electronic device 101 may include an external device 303 to establish a full-duplex communication node.

4 illustrates a network in which the number of common idle channels in an electronic device according to an embodiment of the present invention is greater than one half of the full duplex idle channel.

The electronic device 101 performs full duplex communication 401 with the external device 303 and the external device 305 and the other external devices such as the electronic device 421 and STA E perform non- 403).

Electronic device 101 receives status information of each channel associated with a connected node from at least one external device (e.g., electronic device 303, electronic device 305, and / or electronic device 421) The electronic device 101 determines the full duplex channel status 411 of the full duplex communication 401 and / or the non-busy channel status 413 of the non-busy communication 403 based on the received channel status information .

The electronic device 101 is assigned to full duplex communication by confirming that the number 430 of common idle channels is greater than one half of the full duplex idle channel based on the full duplex channel status 411 and the non-busy channel status 413 The number of channels (or the number of channels) can be determined to be 1/2 of the full-duplex idle channel (two in FIG. 4).

5 illustrates a network in which the number of common idle channels in an electronic device according to one embodiment of the present invention is less than one half of the full duplex idle channel.

The electronic device 101 performs full duplex communication 401 with the external device 303 and the external device 305 and performs non-communication communication with the other external devices, for example, the electronic device 421, STA E 403).

Electronic device 101 receives status information of each channel associated with a connected node from at least one external device (e.g., electronic device 303, electronic device 305, and / or electronic device 421) can do. The electronic device 101 may determine the full duplex channel status 511 of the full duplex communication 401 and / or the non-busy channel status 513 of the non-busy communication 403 based on the received channel status information.

The electronic device 101 is assigned full duplex communication by confirming that the number of common idle channels 530 is less than one half of the full duplex idle channel based on the full duplex channel state 511 and the non-busy channel state 513 The number of channels (or the number of channels) can be determined as a full-duplex idle channel (four in FIG. 5).

6 illustrates a data transmission schedule of full duplex communication in an electronic device according to an embodiment of the present invention.

Referring to the data transmission schedule of the external device 303 and the electronic device 101 (AP), the electronic device 101 receives data from the external device 303 through the full-duplex communication, STA B), and it can be confirmed that three of the five channels (for example, subchannel 1, subchannel 2, and subchannel 3) are idle.

At this time, in assigning the full-duplex communication channel, the electronic device 101 does not separately allocate the transmission channel and the reception channel, but allocates the subchannel 1 and the subchannel 2 and subchannel 3 can be aggregated and assigned to the transmit and receive channels of full duplex communication.

According to various embodiments of the present invention, the embodiments described above can perform simulations for performance analysis. FIG. 7 illustrates a full-duplex communication and a non-busy communication state including three APs and five external devices in a communication environment according to an embodiment of the present invention. Here, the electronic device 101 may be defined as an apparatus that performs at least some functions of the AP.

7, a node participating in a full-duplex communication may include an electronic device 101, an external device 303, a STA A, and an external device 305, STA B, (101) and from the electronic device (101) to the external device (305), and the lengths of the two data may be the same or similar.

In addition, the sub-channels (or channels) of the electronic device 101 and the external devices including at least one AP are composed of five in total, and the idle state and the operation state of the peripheral channel are changed randomly . At this time, the packet size can be determined as an average value of the packet size distribution, and the remaining variables (parameters) can be determined by the following Table (1).

variable value Number of packets
(Number of packets) 1-20 Number of subchannels (or channels)
(Number of sub channels) (M) 5, 11 Number of simulations
(Number of simulation times) 100 Data transfer rate
(Data rate) 54 Mbps (DIFS) Distributed Inter-Freme Space 110 μs Minimum continuous wave
(Minimum wave interference) 32 Backoff Slot Period
(Backoff slot duration) 50 μs Full-duplex MAC scheduling overhead
(FD-MAC scheduling overhead) 2530 μs

The variables set in the table 1 in the operation of the electronic device 101 are variables representing the results of Figs. 8 and 9, and in accordance with various embodiments of the present invention, It is obvious that various parameters based on communication conditions can be applied.

According to one embodiment, the communication protocol configured in FIG. 7 may apply the wireless communication protocol of CSMA / CA based on 802.11 and the full-duplex communication protocol of OFDMA FD-MAC.

FIG. 8 is a graph illustrating a throughput according to the number of packets in a case where five channels are used in a full-duplex communication network according to an exemplary embodiment of the present invention. FIG. Is a graph showing the throughput according to the number of packets in the case of FIG.

Referring to FIGS. 8 and 9, when the number of packets to be transmitted is small, the throughput of the CSMA / CA is large. However, the larger the number of packets to be transmitted, the larger the throughput of the FD-MAC is. As a result, it can be seen that as the data to be transmitted from the nodes participating in the full-duplex communication is larger (or larger), the throughput is increased (or increased) due to less influence on the overhead.

As shown in FIG. 8, the throughput of the FD-MAC is larger than the number of packets to be transmitted from 5 or more, and the throughput of the FD-MAC is larger than the number of packets to be transmitted from 2 or more, The difference in throughput of the CSMA / CA protocol is larger than that in the case of five sub-channels.

This is because the bandwidth per one channel becomes smaller as the number of subchannels (or channels) increases. In the case of CSMA / CA, only one subchannel is allocated to each transmission, thereby reducing the throughput. In the case of the electronic device 101, it is confirmed that the difference in throughput is not large depending on the number of subchannels because all idle channels or half are allocated to the full-duplex communication channel depending on the channel environment.

According to various embodiments as described above, the electronic device 101 may provide an OFDMA FD-MAC protocol that allocates subchannels (or channels) based on idle channel information of nodes participating in full-duplex communication.

Also, the electronic device 101 may control the network environment such that the throughput is maximized by performing an AP centric scheme to inform at least one external device after scheduling of the full-duplex communication.

According to various embodiments of the present invention, electronic device 101 is described as an AP or as an apparatus that performs at least some of the functions of an AP. However, it is apparent that the electronic device 101 is not limited to an AP but can be applied to various electronic devices that perform full-duplex wireless communication.

According to an embodiment of the present invention, there is provided a method of communicating data based on channel information of a device, comprising: checking a size of first data to be transmitted; Receiving information including at least one of a channel status of each connected node and a size of data to be transmitted from at least one external device; Comparing the size of the first data to be transmitted and the size of the data to be transmitted received from the at least one external device and transmitting the second data and the second data having a size most similar to the size of the first data to be transmitted Selecting a first external device to be used as the first external device; Configuring a full-duplex communication node comprising the first external device and a second external device determined to receive the first data; Determining at least one full-duplex communication channel by comparing a channel state included in the full-duplex communication node and a channel state included in the node other than the full-duplex communication node based on the channel state of the received node; And communicating the first data and the second data through the full-duplex communication node including the determined full-duplex communication channel.

According to various embodiments, the full-duplex communication channel may be determined based on the number of idle channels common to the idle channel included in the full-duplex communication node and the idle channel included in the node other than the full-duplex communication .

According to various embodiments, the full-duplex communication channel may be configured such that when the number of common idle channels is greater than one-half of the number of idle channels included in the full-duplex communication node, And may include 1/2 channels of the number of channels.

According to various embodiments, the full-duplex communication channel may be configured such that if the common idle channel number is less than or equal to one-half the number of idle channels included in the full-duplex communication node, State < / RTI > channels.

According to various embodiments, the common idle channel may comprise two or more consecutive channels.

According to an embodiment of the present invention, there is provided a data communication apparatus based on channel information, comprising: a communication interface for performing full-duplex communication; A memory for storing information received from at least one external device; And a processor coupled to the communication interface and the memory, the method comprising: checking from the memory the size of the first data to be transmitted; determining at least one of the channel status of each connected node from the at least one external device, And transmitting the data to the external device via the communication interface, comparing the size of the first data to be transmitted and the size of the data to be transmitted received from the external device, Selecting a first external device to transmit the second data of the first data and the second data, and a second external device determined to receive the first external device and the first data via the communication interface, , The step of configuring Determining at least one full-duplex communication channel based on a channel status of the full-duplex communication node and a channel status included in the nodes other than the full-duplex communication, based on the channel status of the full- And communicating the first data and the second data via the full-duplex communication node.

According to various embodiments, the processor is configured to determine the full-duplex communication channel based on the number of idle channels common to the idle channel included in the full-duplex communication node and the idle channel included in the node other than the full- You can decide.

According to various embodiments, when the number of channels in the common idle state is greater than one-half of the number of idle channels included in the full-duplex communication node, the processor calculates the number of idle channels included in the full- Half channel of the full duplex communication channel.

According to various embodiments, the processor may be configured to determine, when the common idle channel number is less than or equal to one-half the number of idle channels included in the full-duplex communication node, All channels may be included in the full duplex communication channel.

According to various embodiments, the processor may determine the common idle channel, including two or more consecutive channels.

According to various embodiments, at least some of the devices and methods according to the various embodiments described in the claims of the present invention and / or the specification are in the form of hardware, software, firmware, or a combination of two or more of hardware, For example, modules, units). A module may be a minimum unit or a portion thereof that performs various embodiments of the present invention as a minimum unit or a part of an integrally constructed component. The module may be implemented mechanically or electronically. When implemented in software, a computer-readable storage medium (or computer-readable storage medium) for storing one or more programs (or programming modules, applications) may be provided. For example, the software may be embodied in instructions stored on a computer-readable storage medium in the form of a programming module. The one or more programs may include instructions that cause the electronic device to perform the methods according to the embodiments of the invention and / or the claims of the present invention. The instructions, when executed by one or more processors (e.g., the processor 120), may cause the one or more processors to perform functions corresponding to the instructions. The computer readable storage medium may be, for example, the memory 130. [ At least some of the programming modules may be implemented (e.g., executed) by the processor 120, for example. At least some of the programming modules may include, for example, modules, programs, routines, sets of instructions or processes, etc. to perform one or more functions.

The computer-readable recording medium includes a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD (Digital Versatile Disc) A magneto-optical medium such as a floppy disk and a program command such as a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, (EEPROM), a magnetic disc storage device or other type of optical storage device, or any other form of optical storage device, A magnetic cassette may be included. Or a combination of some or all of these. In addition, a plurality of constituent memories may be included.

In addition, electronic devices may be connected to a communication network, such as the Internet, an Intranet, a LAN (Local Area Network), a WLAN (Wide Area Network), or a communication network such as a SAN (Storage Area Network) And can be stored in an attachable storage device that can be accessed. Such a storage device may be connected to the electronic device through an external port. Further, a separate storage device on the communication network may be connected to the portable electronic device. The hardware devices described above may be configured to operate as one or more software modules to perform operations on the various embodiments of the present invention, and vice versa.

Modules or programming modules according to various embodiments of the present invention may include at least one or more of the elements described above, some of which may be omitted, or may further include other additional elements. Operations performed by modules, programming modules, or other components in accordance with various embodiments of the invention may be performed in a sequential, parallel, iterative, or heuristic manner. Also, some operations may be performed in a different order, omitted, or other operations may be added.

The embodiments of the present invention disclosed in the present specification and drawings are merely illustrative examples of the present invention and are not intended to limit the scope of the present invention in order to facilitate understanding of the present invention. Accordingly, the scope of the present invention should be construed as being included in the scope of the present invention, all changes or modifications derived from the technical idea of the present invention.

101: Electronic device 102: External device
110: bus 120: processor
130: memory 140: input / output interface
160: Communication interface

Claims (10)

A method of communicating data based on channel information of a device,
Determining a size of the first data to be transmitted;
Receiving information including at least one of a channel status of each connected node and a size of data to be transmitted from at least one external device;
Comparing the size of the first data to be transmitted and the size of the data to be transmitted received from the at least one external device and transmitting the second data and the second data having a size most similar to the size of the first data to be transmitted Selecting a first external device to be used as the first external device;
Configuring a full-duplex communication node comprising the first external device and a second external device determined to receive the first data;
Determining at least one full-duplex communication channel by comparing a channel state included in the full-duplex communication node and a channel state included in the node other than the full-duplex communication node based on the channel state of the received node; And
And communicating the first data and the second data via the full-duplex communication node including the determined full-duplex communication channel.
The method according to claim 1,
Wherein the full-
Based on the idle channel included in the full-duplex communication node and the number of idle channels common to the idle channels included in the nodes other than the full-duplex communication.
3. The method of claim 2,
Wherein the full-
And a half-channel number of idle channels included in the full-duplex communication node when the number of common idle channels is greater than half the number of idle channels included in the full- A method of data communication based on channel information.
3. The method of claim 2,
Wherein the full-
Based on channel information, including all of the idle channels included in the full-duplex communication node when the number of common idle channels is less than or equal to one-half of the number of idle channels included in the full- Lt; / RTI >
3. The method of claim 2,
Wherein the common idle channel comprises two or more consecutive channels.
A communication interface for performing full-duplex communication;
A memory for storing information received from at least one external device; And
And a processor coupled to the communication interface and the memory,
The processor comprising:
Confirming from the memory the size of the first data to be transmitted;
Receiving, via the communication interface, information including at least one of a channel status of each connected node and a size of data to be transmitted from the at least one external device;
Comparing the size of the first data to be transmitted and the size of the data to be transmitted received from the external device to obtain second data having a size most similar to the size of the first data to be transmitted, Selecting an external device;
Configuring a full duplex communication node including the first external device and the second external device determined to receive the first data through the communication interface;
Determining at least one full-duplex communication channel by comparing a channel state included in the full-duplex communication node and a channel state included in the node other than the full-duplex communication node based on the channel state of the received node; And
And communicating the first data and the second data via the full-duplex communication node including the determined full-duplex communication channel.
The method according to claim 6,
Wherein the processor determines the full-duplex communication channel based on a number of idle channels common to the idle channel included in the full-duplex communication node and the idle channel included in the node other than the full- Lt; / RTI >
8. The method of claim 7,
Wherein the processor is further configured to select one of a half channel number of idle channels included in the full-duplex communication node if the common idle channel number is greater than half the number of idle channels included in the full- Is included in the full-duplex communication channel.
8. The method of claim 7,
Wherein the processor is further configured to cause all of the idle channels included in the full-duplex communication node to communicate with the full-duplex communication node if the common idle channel number is less than or equal to one-half of the number of idle channels included in the full- A data communication device based on channel information included in a channel.
8. The method of claim 7,
Wherein the processor is configured to determine the common idle channel including two or more consecutive channels.

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