KR20240030886A - Electronic device for wlan communication and operating method thereof - Google Patents

Abstract

Various embodiments of the present invention relate to an apparatus and method for wireless LAN communication in an electronic device. The electronic device includes a communication circuit supporting wireless LAN communication and at least one processor, wherein the processor determines the number of times retransmission data is received through each of a plurality of links with an external electronic device during a specified time, If there is a link among a plurality of links that satisfies a specified error condition based on the number of times retransmission data is received, other links related to the link that satisfy the specified error condition are checked, and the link that satisfies the specified error condition is checked. The wireless LAN communication through other related links may be restricted. Other embodiments may also be possible.

Description

Electronic device for wireless LAN communication and operating method thereof {ELECTRONIC DEVICE FOR WLAN COMMUNICATION AND OPERATING METHOD THEREOF}

Various embodiments of the present invention relate to an electronic device for wireless LAN communication and a method of operating the same.

A wireless local area network (WLAN) system uses a designated frequency band (e.g., about 2.4 GHz band, about 5 GHz band, and/or about 6 GHz band) to connect a smartphone, tablet personal computer (tablet PC), or laptop. ) can support wireless connection of various electronic devices such as

Wireless LAN systems can be installed not only in private spaces such as homes, but also in public spaces such as airports, train stations, offices, or department stores. A wireless LAN system can be defined in the IEEE 802.11 standard. For example, the IEEE 802.11 standard is evolving into IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, and IEEE 802.11ax.

A wireless LAN system may include a relatively large number of access points (APs) to provide communication functions to a relatively large number of users in a relatively wide location. APs may have at least some overlapping service areas (e.g., coverage). APs and electronic devices that communicate through the APs share limited radio resources (e.g., frequency resources), thereby failing to transmit and/or receive data (or packets) due to signal interference. Processing speed may decrease and/or latency may increase.

To reduce the impact of interference from other transmission devices, the transmission device uses CSMA/CA (carrier sensing multiple access with collision avoidance) to ensure that the wireless medium (or wireless resource) is connected to other transmission devices before transmitting data. CCA (clear channel assessment) can be performed to check whether the channel is occupied by a channel. For example, when using CCA, the transmission device can arbitrarily set a counter (e.g., a counter in the back-off window) within the content window (CW). The transmitting device may decrease the counter based on a designated pattern during a section in which it is determined that no other transmitting device occupies the wireless medium. When the counter reaches a specified value (e.g., '0'), the transmitting device can occupy the wireless medium and transmit data. If the transmission device determines that data transmission has failed, it may increase the size of the CW to retransmit the data.

A transmitting device can use CCA to transmit data by occupying the wireless medium if it is not determined that another transmitting device is occupying the wireless medium. If the receiving device that receives data from the transmitting device is located between the transmitting device and another transmitting device, reception of data from the transmitting device may be limited due to the influence of interference (eg, hidden interference) from the other transmitting device.

Various embodiments of the present invention prevent interference from peripheral devices (e.g., other transmitting devices) by using a plurality of links with an external electronic device (e.g., a transmitting device) in an electronic device (e.g., a receiving device) supporting wireless LAN communication. Discloses a device and method for reducing the impact of

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

According to various embodiments, an electronic device may include a communication circuit that supports wireless LAN communication, and a processor operatively connected to the communication circuit. According to one embodiment, the processor may establish a plurality of links with an external electronic device through a communication circuit. According to one embodiment, the processor may check at least one of the number of times retransmission data is received or the channel state through each of a plurality of links during a specified time. According to one embodiment, if there is a link among a plurality of links that satisfies a specified error condition based on at least one of the number of receptions of retransmission data or the channel state, the processor determines the specified error condition among the plurality of links. You can check other links related to the link you are satisfied with. According to one embodiment, the processor may restrict the wireless LAN communication through other links related to a link that satisfies a specified error condition.

According to various embodiments, a method of operating an electronic device may include establishing a plurality of links with an external electronic device based on wireless LAN communication. According to one embodiment, a method of operating an electronic device may include checking at least one of the number of times retransmission data is received or channel state information through each of the plurality of links during a specified time. According to one embodiment, a method of operating an electronic device may be performed when, among a plurality of links, there is a link that satisfies a specified error condition based on at least one of the number of times retransmission data is received or channel state information. It may include checking other links related to the link that satisfies the specified error condition. According to one embodiment, a method of operating an electronic device may include limiting the wireless LAN communication through another link related to a link that satisfies a specified error condition.

According to various embodiments, a non-transitory computer-readable storage medium (or computer program product) storing one or more programs may be described. According to one embodiment, one or more programs, when executed by a processor of an electronic device, establish a plurality of links with an external electronic device based on wireless LAN communication and retransmit through each of the plurality of links for a specified time. An operation of checking at least one of the number of data receptions or channel state information, and if there is a link that satisfies a specified error condition based on at least one of the number of receptions of retransmission data or channel state information among the plurality of links, An instruction to perform an operation of checking another link related to a link that satisfies the specified error condition among a plurality of links, and an operation of restricting the wireless LAN communication through another link related to the link that satisfies the specified error condition. It can be included.

According to various embodiments of the present invention, use of at least one link in which an error occurs in reception of data (or packets) among a plurality of links between an electronic device (e.g., a receiving device) and an external electronic device (e.g., a transmitting device) By limiting , it is possible to prevent degradation of reception performance from external electronic devices.

According to various embodiments, retransmission of data is performed from an electronic device (e.g., a receiving device) using a link different from the link for data (or packet) transmission among a plurality of links with an external electronic device (e.g., a transmitting device). By performing this, data transmission delay can be reduced.

The effects that can be obtained from various embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned above can be understood from the description below as a matter of common knowledge in the technical field to which the various embodiments of the present invention belong. It will be clearly understandable to those who have it.

1 is a block diagram of an electronic device in a network environment, according to various embodiments.
Figure 2 is an example of multi-link operation (MLO) in a wireless LAN system according to various embodiments.
Figure 3 is a block diagram of an electronic device supporting MLO according to various embodiments.
4 is a flowchart for retransmitting data from an external electronic device according to various embodiments.
Figure 5 is an example of data retransmission using MLO from an external electronic device according to various embodiments.
FIG. 6 is a flowchart for restricting the use of a link in which an error has occurred in an electronic device according to various embodiments.
FIG. 7 is an example of limiting the use of a link in which an error occurred in an electronic device according to various embodiments.

Various embodiments are described in detail below with reference to the attached drawings.

1 is a block diagram of an electronic device 101 in a network environment 100, according to various embodiments. Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through a first network 198 (e.g., a short-range wireless communication network) or a second network 199. It is possible to communicate with the electronic device 104 or the server 108 through (e.g., a long-distance wireless communication network). According to one embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to one embodiment, the electronic device 101 includes a processor 120, a memory 130, an input module 150, an audio output module 155, a display module 160, an audio module 170, and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or may include an antenna module 197. In some embodiments, at least one of these components (eg, the connection terminal 178) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components (e.g., sensor module 176, camera module 180, or antenna module 197) are integrated into one component (e.g., display module 160). It can be.

The processor 120, for example, executes software (e.g., program 140) to operate at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and various data processing or calculations can be performed. According to one embodiment, as at least part of data processing or computation, the processor 120 stores instructions or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 includes the main processor 121 (e.g., a central processing unit or an application processor) or an auxiliary processor 123 that can operate independently or together (e.g., a graphics processing unit, a neural network processing unit ( It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 101 includes a main processor 121 and a secondary processor 123, the secondary processor 123 may be set to use lower power than the main processor 121 or be specialized for a designated function. You can. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of it.

The auxiliary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or while the main processor 121 is in an active (e.g., application execution) state. ), together with the main processor 121, at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) At least some of the functions or states related to can be controlled. According to one embodiment, co-processor 123 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 180 or communication module 190). there is. According to one embodiment, the auxiliary processor 123 (eg, neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself, where artificial intelligence is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101. Data may include, for example, input data or output data for software (e.g., program 140) and instructions related thereto. Memory 130 may include volatile memory 132 or non-volatile memory 134.

The program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142, middleware 144, or application 146.

The input module 150 may receive commands or data to be used in a component of the electronic device 101 (e.g., the processor 120) from outside the electronic device 101 (e.g., a user). The input module 150 may include, for example, a microphone, mouse, keyboard, keys (eg, buttons), or digital pen (eg, stylus pen).

The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 can visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 170 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (e.g., speaker or headphone).

The sensor module 176 detects the operating state (e.g., power or temperature) of the electronic device 101 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that can be used to connect the electronic device 101 directly or wirelessly with an external electronic device (eg, the electronic device 102). According to one embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to one embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 can capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 can manage power supplied to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 may be a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, Wi-Fi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network 199 (e.g. : Can communicate with an external electronic device 104 through a long-distance communication network such as a legacy cellular network, 5G network, next-generation communication network, Internet, or computer network (e.g., LAN or WAN). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be confirmed or authenticated.

The wireless communication module 192 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low latency). -latency communications)) can be supported. The wireless communication module 192 may support high frequency bands (eg, mmWave bands), for example, to achieve high data rates. The wireless communication module 192 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive array multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to one embodiment, the wireless communication module 192 supports Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported. According to various embodiments, subscriber identification module 196 may include a plurality of subscriber identification modules. For example, a plurality of subscriber identification modules may store different subscriber information.

The antenna module 197 may transmit or receive signals or power to or from the outside (eg, an external electronic device). According to one embodiment, the antenna module 197 may include an antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for the communication method used in the communication network, such as the first network 198 or the second network 199, is selected from the plurality of antennas by, for example, the communication module 190. It can be. Signals or power may be transmitted or received between the communication module 190 and an external electronic device through at least one selected antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module 197.

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, a mmWave antenna module includes a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., mmWave band), and It may include a plurality of antennas (e.g., array antennas) disposed on or adjacent to the second side (e.g., top or side) of the printed circuit board and capable of transmitting or receiving signals in a designated high frequency band. .

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the external electronic devices 102 or 104 may be of the same or different type as the electronic device 101. According to one embodiment, all or part of the operations performed in the electronic device 101 may be executed in one or more of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

Electronic devices according to various embodiments disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-described devices.

The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or replacements of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the relevant context clearly indicates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to that component in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” When mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

As used in various embodiments of this document, the term “module” may include a unit implemented in hardware, software, or firmware, and may be interchangeable with terms such as logic, logic block, component, or circuit, for example. can be used A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document are one or more instructions stored in a storage medium (e.g., built-in memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). It may be implemented as software (e.g., program 140) including these. For example, a processor (e.g., processor 120) of a device (e.g., electronic device 101) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and this term refers to cases where data is semi-permanently stored in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, methods according to various embodiments disclosed in this document may be provided and included in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or via an application store (e.g. Play Store ^TM ) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to various embodiments, each component (e.g., module or program) of the above-described components may include a single or multiple entities, and some of the multiple entities may be separately placed in other components. . According to various embodiments, one or more of the components or operations described above may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or , or one or more other operations may be added.

Figure 2 is an example of multi-link operation (MLO) in a wireless LAN system according to various embodiments. As an example, the electronic device 101 of FIG. 2 may be at least partially similar to the electronic device 101 of FIG. 1 or may include another embodiment of the electronic device.

According to various embodiments referring to FIG. 2, the wireless LAN system 200 may include an electronic device 101 and/or an external electronic device 220. According to one embodiment, the electronic device 101 may perform wireless LAN communication with the external electronic device 220. For example, wireless LAN communication may include Wi-Fi. For example, the external electronic device 220 may function as a base station that provides wireless LAN communication to at least one electronic device 101 located within the communication radius of the wireless LAN system 200. For example, the external electronic device 220 may include an IEEE 802.11 access point (AP). For example, the electronic device 101 may include an IEEE 802.11 station (STA).

According to various embodiments, the electronic device 101 and the external electronic device 220 may support multi-link operation (MLO: multi-link operation). Multi-link operation is a communication method that transmits or receives data (or packets) through a plurality of links (e.g., first link 231, second link 232, and/or third link 233). It can be included. As an example, multi-link operation may include a communication method that transmits or receives data through multiple links based on multiple bands or multiple channels. As an example, the plurality of bands may include about 2.4 GHz band, about 5 GHz band, and/or about 6 GHz band.

According to various embodiments, the electronic device 101 includes a plurality of communication circuits (e.g., a first communication circuit 211, a second communication circuit 212, and/or a third communication circuit) to support a multi-link operation. (213)). According to one embodiment, the first communication circuit 211 transmits data to the external electronic device 220 through the first link 231 and/or transmits data to the external electronic device 220 through the first link 231. You can receive data transmitted by . The first communication circuit 211 may output and/or receive a signal in a frequency band corresponding to the first link 231 through the first antenna 214. According to one embodiment, the second communication circuit 212 transmits data to the external electronic device 220 through the second link 232 and/or to the external electronic device 220 through the second link 232. ) can receive data transmitted by. The second communication circuit 212 may output or receive a signal in the frequency band corresponding to the second link 232 through the second antenna 215. According to one embodiment, the third communication circuit 213 transmits data to the external electronic device 220 through the third link 233, and/or transmits data to the external electronic device 220 through the third link 233. ) can receive data transmitted by. The third communication circuit 213 may output or receive a signal in the frequency band corresponding to the third link 233 through the third antenna 216.

According to various embodiments, the external electronic device 220 includes a plurality of communication circuits (e.g., the fourth communication circuit 221, the fifth communication circuit 222, and/or the sixth communication circuit) to support multi-link operation. It may include a circuit 223). According to one embodiment, the fourth communication circuit 221 transmits data to the electronic device 101 through the first link 231, and/or the electronic device 101 transmits data through the first link 231. Transmitted data can be received. The fourth communication circuit 221 may output or receive a signal in the frequency band corresponding to the first link 231 through the fourth antenna 224. According to one embodiment, the fifth communication circuit 222 transmits data to the electronic device 101 through the second link 232 and/or the electronic device 101 through the second link 232. Transmitted data can be received. The fifth communication circuit 222 may output or receive a signal in the frequency band corresponding to the second link 232 through the fifth antenna 225. According to one embodiment, the sixth communication circuit 223 transmits data to the electronic device 101 through the third link 233, and/or the electronic device 101 transmits data through the third link 233. Transmitted data can be received. The sixth communication circuit 223 may output or receive a signal in the frequency band corresponding to the third link 233 through the sixth antenna 226.

According to various embodiments, the frequency bands of the first link 231, the second link 232, and the third link 233 may be different from each other. For example, the frequency band of the first link 231 may be about 2.5 GHz, the frequency band of the second link 232 may be about 5 GHz, and the frequency band of the third link 233 may be about 6 GHz. .

According to various embodiments, the first link 231, the second link 232, and/or the third link 233 may also use external devices other than the electronic device 101. As an example, the external device may include other electronic devices that support wireless LAN communication, excluding the electronic device 101 and the external electronic device 220. According to one embodiment, the electronic device 101 supports a carrier sense multiple access with collision avoidance (CSMA/CA) method so that the electronic device 101 and an external device do not interfere with each other by using the same link at the same time. You can. As an example, the CSMA/CA method performs data transmission when a specific link (e.g., the first link 231, the second link 232, and/or the third link 233) is in an idle state. This may be the way to do it. For example, the electronic device 101 that supports CSMA/CA can check whether an external device is transmitting data through a specific link. If the electronic device 101 determines that an external device is transmitting data through a specific link, it may wait without transmitting data through the specific link. For example, when the electronic device 101 supporting CSMA/CA determines that an external device is not transmitting data through a specific link, it can transmit data through a specific link according to a designated method. As an example, the designated method may include clear channel assessment (CCA).

According to various embodiments, the first link 231, the second link 232, and/or the third link 233 supported by multi-link operation may independently support CSMA/CA. According to one embodiment, the electronic device 101 receives information related to the idle state of the first link 231 included in the data transmitted by the external electronic device 220 based on detection of data to be transmitted through wireless LAN communication. Based on this, it can be confirmed whether the first link 231 is in an idle state. As an example, the information related to the idle state of the first link 231 includes a ready to send (RTS) message requesting data transmission through the first link 231 and/or data transmission through the first link 231. It may be included in a CTS (clear to send) message indicating that it is possible. For example, the electronic device 101 determines whether the first link 231 is in an idle state by referring to the CCA status field and/or the network allocation vector (NAV) configuration field of the RTS message and/or CTS message. You can check. The electronic device 101 determines whether the first link 231 is physically idle by referring to the CCA status field, and determines whether the first link 231 is logically idle by referring to the NAV configuration field. can be judged. For example, the electronic device 101 may use a variable (e.g., back-off window) to determine the time of occupancy of the wireless medium of the electronic device 101 based on the determination that the first link 231 is not idle. The deduction of the counter) can be limited. As an example, the operation of limiting the deduction of variables for determining the point of occupancy of the wireless medium does not decrease the counter for the back-off window while it is determined that the external device is using (or occupying) the first link 231. It may include a series of actions to control it so that it does not occur. For example, the electronic device 101 may use a variable (e.g., a back-off window) to determine the time of occupancy of the wireless medium of the electronic device 101 based on the determination that the first link 231 is in an idle state. counter) can be decreased. For example, when the variable for determining the point of possession of the wireless medium becomes a specified value (e.g., '0'), the electronic device 101 occupies the first link 231 and transmits data to the external electronic device 220. ) can be transmitted. According to one embodiment, the electronic device 101 operates the second link based on the idle state of the second link 232 and/or the third link 233 in the same way as the method of occupying the first link 231. 232) and/or the third link 233 may be occupied to transmit data to the external electronic device 220. Accordingly, a detailed description of the operation of the electronic device 101 occupying the second link 232 and/or the third link 233 may be omitted.

According to various embodiments, the electronic device 101 and/or the external electronic device 220 detects (or detects) the delay time of the first link 231, the second link 232, and/or the third link 233. , prediction) can be made. The electronic device 101 and/or the external electronic device 220 detects the delay time of a combination of at least two links of the first link 231, the second link 232, and/or the third link 233 ( or prediction) can be made. For example, the delay time of a combination of at least two links may be detected (or predicted) based on the harmonic mean of the delay times of at least two links included in the combination of links. As an example, the harmonic average of the delay times of the links may represent the reciprocal of the sum of the reciprocals of the delay times of the links.

According to various embodiments, the electronic device 101 and/or the external electronic device 220 determines the delay time required to perform a service (or an application program) and a plurality of links (e.g., the first link 231, the second link 231). At least some of the plurality of links may be activated or deactivated based on the delay time of the second link 232, the third link 233, and/or a combination of at least two links. According to one embodiment, when the electronic device 101 and/or the external electronic device 220 performs a service requiring a relatively high delay time, the first link 231, the second link 232 and/ Alternatively, the service may be performed through some links of the third link 233. The electronic device 101 and/or the external electronic device 220 determines the delay time required to perform the service and the combination of the first link 231, the second link 232, and/or the third link 233. Based on latency, at least some links may be disabled. For example, the electronic device 101 and/or the external electronic device 220 maintains a link or combination of links capable of implementing a lower latency than the latency required for performance of the service (or application program) in an active state. (Or, it can be switched to the activated state). The electronic device 101 and/or the external electronic device 220 may switch the remaining links to a deactivated state (or maintain the deactivated state) except for the link or combination of links that are maintained in the active state among the plurality of links. . According to one embodiment, the electronic device 101 may activate or deactivate a specific link through “TID-to link mapping” negotiation with the external electronic device 220. For example, when activating a specific link, the electronic device 101 sends a “TID-to-link mapping element” that maps a traffic identifier (TID) to the identification information of the link to be activated to the external electronic device 220. Can be transmitted. As an example, the TID may include information related to the type of data to be transmitted over a specific link. For example, when deactivating a specific link, the electronic device 101 may transmit to the external electronic device 220 a “TID-to-link mapping element” in which the mapping between the identification information of the link to be deactivated and the TID is cancelled. there is.

Figure 3 is a block diagram of an electronic device supporting MLO according to various embodiments. According to one embodiment, the electronic device 101 of FIG. 3 may be at least partially similar to the electronic device 101 of FIG. 1 or 2 or may include another embodiment of the electronic device.

According to various embodiments referring to FIG. 3 , the electronic device 101 may include a processor 300, a communication circuit 310, and/or a memory 320. According to one embodiment, the processor 300 may be substantially the same as the processor 120 of FIG. 1 or may be included in the processor 120. The communication circuit 310 may be substantially the same as the wireless communication module 192 of FIG. 1 or may be included in the wireless communication module 192. The memory 320 may be substantially the same as the memory 130 of FIG. 1 or may be included in the memory 130. According to one embodiment, the processor 300 may be operatively, functionally, and/or electrically connected to the communication circuit 310 and/or the memory 320.

According to various embodiments, the processor 300 connects the external electronic device 220 and a plurality of links (e.g., the first link 231, the second link 232, and/or the third link 233 of FIG. 2). ) can control the communication circuit 310 to establish. For example, multiple links may support different frequency bands (e.g., approximately 2.4 GHz band, approximately 5 GHz band, and/or approximately 6 GHz band).

According to various embodiments, the processor 300 may check the number of receptions (or reception ratio) of retransmission data through each link during a specified time. According to one embodiment, the processor 300 provides setting information in the “retry” subfield of the frame control field included in the MAC (media access control) header of the data received through each link. Based on this, it can be determined whether the data is retransmitted data.

According to various embodiments, the processor 300 may determine whether there is a link among a plurality of links that satisfies a specified error condition based on the number of times retransmission data is received through each link and/or channel state information. According to one embodiment, the processor 300 may determine that a specified error condition is satisfied when the number of receptions of retransmitted data through each link exceeds a specified number of error detections (or a specified reference number). If the number of times retransmitted data is received through each link is less than or equal to the specified number of error detections, the processor 300 may determine that the specified error condition is not satisfied. According to one embodiment, the processor 300 satisfies the specified error condition when the number of receptions of retransmitted data through each link exceeds the specified number of error detections (or the specified reference number) and the channel state information is below the reference value. It can be judged that The processor 300 may determine that the specified error condition is not satisfied when the number of times retransmitted data is received through each link is less than or equal to the specified number of error detections or when the channel state information exceeds the reference value. As an example, the channel state information may be at least one of channel utilization, reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise ratio (SINR). may include.

According to one embodiment, the processor 300 may detect the reception rate of retransmission data for each link based on the number of times retransmission data is received through each link and/or channel state information during a specified time. The processor 300 may determine that a specified error condition is satisfied when the reception rate of retransmitted data for each link exceeds a specified error detection rate (or a specified reference rate). If the reception rate of retransmission data for each link is less than or equal to the specified error detection rate, the processor 300 may determine that the specified error condition is not satisfied. For example, the reception rate of retransmission data may represent the ratio of the number of times data is received through a specific link at a specified time and the number of times retransmission data is received.

According to various embodiments, when a link that satisfies a specified error condition exists, the processor 300 may check other links associated with the link that satisfies the specified error condition. According to one embodiment, the processor 300 may detect another link associated with a link that satisfies a specified error condition based on retransmission link information. As an example, the retransmission link information is a link for retransmitting the failed data (or retransmission data) when transmission of data (or retransmission data) from the external electronic device 220 to the electronic device 101 through a specific link fails. It may contain information related to . As an example, retransmission link information may include information related to a designated pattern for establishing (or selecting) a link for retransmission. For example, retransmission link information may be set (or updated) through consultation between the electronic device 101 and the external electronic device 220. For example, negotiation of retransmission link information may be performed at the time of establishing a plurality of links with the external electronic device 220 or after establishing a plurality of links. As an example, the link for retransmission may include a link that is different from the link that failed to transmit data (or retransmission data) to the electronic device 101 among the plurality of links. As an example, another link associated with a link that satisfies a specified error condition may be a link used in the previous (or immediately preceding) transmission of data (or retransmitted data) related to retransmitted data received through a link that satisfies the specified error condition. may include.

According to various embodiments, processor 300 may control communication circuitry 310 to limit use of other links associated with links that satisfy specified error conditions. According to one embodiment, the processor 300 may identify the first link 231 associated with the second link 232 based on retransmission link information when the second link 232 satisfies a specified error condition. there is. For example, data transmitted (or retransmitted) from the external electronic device 220 to the electronic device 101 through the first link 231 at the previous time (or the immediately preceding time) is subject to transmission failure to the electronic device 101. Based on this, it can be retransmitted to the electronic device 101 through the second link 232. According to one embodiment, the processor 300 controls the communication circuit 310 to limit the use of the first link 231 through “TID-to-link mapping” negotiation with the external electronic device 220. can do. For example, the processor 300 uses the communication circuit 310 to transmit a “TID-to-link mapping element” in which the mapping between the identification information of the first link 231 and the TID is cancelled, to the external electronic device 220. You can control it. For example, the processor 300 uses a communication circuit ( 310) can be controlled. For example, the uplink of the first link 231 may be maintained in an active state. For example, “TID-to-link mapping element” may be included in a request frame related to “TID-to-link mapping” and transmitted to the external electronic device 220. For example, the downlink of the first link 231 may include a link through which the electronic device 101 receives data from the external electronic device 220. For example, the uplink of the first link 231 may include a link through which the electronic device 101 transmits data to the external electronic device 220.

According to various embodiments, the communication circuit 310 may transmit and/or receive signals and/or data with at least one external electronic device (e.g., the external electronic device 220 of FIG. 2) through wireless LAN communication. there is.

According to various embodiments, the memory 320 may store various data used by at least one component of the electronic device 101 (eg, the processor 300 and/or the communication circuit 310). As an example, the data may include retransmission link information. According to one embodiment, the memory 320 may store various instructions that can be executed through the processor 300.

According to various embodiments, the electronic device 101 (or the processor 300) may obtain information related to the number of retransmissions of retransmission data from the external electronic device 220. The electronic device 101 (or the processor 300) may identify another link that previously transmitted the retransmission data based on the number of retransmissions of the retransmission data and the retransmission link information.

According to various embodiments, an electronic device (e.g., the electronic device 101 of FIG. 1, FIG. 2, or FIG. 3) includes a communication circuit (e.g., the wireless communication module 192 of FIG. 1 or FIG. It may include a communication circuit 310 of 3), and a processor (eg, processor 120 of FIG. 1 or processor 300 of FIG. 3) operatively connected to the communication circuit. According to one embodiment, the processor communicates with an external electronic device (e.g., the external electronic device 220 of FIG. 2) and a plurality of links (e.g., the first link 231 and the second link of FIG. 2) through a communication circuit. 232) and/or a third link 233) may be established. According to one embodiment, the processor may check at least one of the number of times retransmission data is received or channel state information through each of a plurality of links during a specified time. According to one embodiment, if there is a link among a plurality of links that satisfies a specified error condition based on at least one of the number of times retransmission data is received or channel state information, the processor determines the specified error condition among the plurality of links. You can check other links related to the link that satisfies. According to one embodiment, the processor may restrict the wireless LAN communication through other links related to a link that satisfies a specified error condition.

According to various embodiments, the channel state information may include channel utilization, reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise (SINR). ratio) may be included.

According to various embodiments, the processor determines the reception rate of retransmission data of each link during a specified time based on the number of times of reception of retransmission data of each of the plurality of links, and selects the reception rate of the retransmission data or the channel state information. A link that satisfies a specified error condition can be detected based on at least one.

According to various embodiments, the processor may, based on designated retransmission link information, related to the retransmission data before (or immediately before) receiving the retransmission data from an external electronic device through a link that satisfies a designated error condition among a plurality of links. You can check other links that have received data or retransmitted data.

According to various embodiments, the designated retransmission link information may be set through consultation with the external electronic device at the time of establishing a plurality of links with the external electronic device or after the establishment of the plurality of links.

According to various embodiments, the processor may restrict wireless LAN communication through other links related to a link that satisfies a specified error condition through TID-to-link mapping negotiation with an external electronic device.

According to various embodiments, the processor may limit reception of data from an external electronic device through a link that satisfies a specified error condition through TID-to-link mapping negotiation with the external electronic device.

According to various embodiments, the processor may be configured to restrict reception of data from an external electronic device through a link that satisfies a specified error condition while actively transmitting data to an external electronic device through a link that satisfies a specified error condition. can be maintained.

According to various embodiments, the processor may transmit a TID-to-link mapping request frame containing information related to limiting reception of data from an external electronic device through a link that satisfies a specified error condition to an external electronic device. .

According to various embodiments, the processor may identify retransmission data in the retry field of a frame control field included in a media access control (MAC) header of data received from an external electronic device.

FIG. 4 is a flowchart 400 for retransmitting data from an external electronic device according to various embodiments. In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel. For example, the external electronic device in FIG. 4 may be the electronic device 101 in FIG. 1 or the external electronic device 220 in FIG. 2 . As an example, at least part of FIG. 4 can be explained with reference to FIG. 5 . Figure 5 is an example of data retransmission using MLO from an external electronic device according to various embodiments.

According to various embodiments referring to FIGS. 4 and 5, in operation 401, an external electronic device (e.g., external electronic device 220 of FIG. 2) or a processor (e.g., processor 120 of FIG. 1) A plurality of links can be established for wireless LAN communication with (e.g., the electronic device 101 in FIG. 2). According to one embodiment, the external electronic device 220 may establish a first link 231, a second link 232, and/or a third link 233 for wireless LAN communication with the electronic device 101. In one example, a plurality of links (e.g., the first link 231, the second link 232, and/or the third link 233) have different frequency bands (e.g., about 2.4 GHz band, about 5 GHz). band and/or approximately 6 GHz band).

According to various embodiments, an external electronic device or processor may transmit data to the electronic device 101 in operation 403. According to one embodiment, the external electronic device 220 connects at least one link (e.g., a first link 231, a second link 232, and/or a third link 233) among a plurality of links. : Data 500 can be transmitted to the electronic device 101 through the first link 231).

According to various embodiments, in operation 405, the external electronic device or processor may check whether information related to successful reception (eg, ACK (acknowledgement)) corresponding to data transmitted to the electronic device 101 is received. According to one embodiment, the external electronic device 220 may check whether information related to successful reception (eg, ACK) is received through each link through which data is transmitted to the electronic device 101.

According to various embodiments, when the external electronic device or processor receives information (e.g., ACK (acknowledgement)) related to successful reception corresponding to data transmitted to the electronic device 101 (e.g., 'Yes' in operation 405) ), an embodiment for retransmitting data may end. According to one embodiment, when the external electronic device 220 receives information related to successful reception (e.g., ACK) through each link that transmitted data to the electronic device 101, the electronic device 220 transmits data to the electronic device 101 through each link. With (101), it can be determined that data transmission was successful.

According to various embodiments, when the external electronic device or processor does not receive information (e.g., ACK (acknowledgement)) related to successful reception corresponding to data transmitted to the electronic device 101 (e.g., 'No' in operation 405) '), In operation 407, a retransmission link for retransmission of data among the plurality of links can be confirmed. According to one embodiment, the external electronic device 220 receives information related to successful reception (e.g., ACK) for a specified time through the first link 231 among the links transmitting data to the electronic device 101. If not, it may be determined that data transmission to the electronic device 101 through the first link 231 has failed. As an example, the designated time may include a maximum time set to wait for reception of information related to successful reception from the time data is transmitted to the electronic device 101 through the first link 231. According to one embodiment, the external electronic device 220 may check the retransmission link associated with the first link 231 based on a determination that data transmission to the electronic device 101 through the first link 231 has failed. there is. For example, the external electronic device 220 may check a retransmission link related to the first link 231 among a plurality of links based on retransmission link information. As an example, retransmission link information may include information related to a designated pattern for establishing (or selecting) a link for retransmission. For example, retransmission link information may be set through consultation between the electronic device 101 and the external electronic device 220 at the time of establishing the MLO or after the establishment of the MLO. For example, if transmission of data (or retransmission data) to the electronic device 101 through the first link 231 fails through the retransmission link associated with the first link 231, the data (or retransmission data) that failed to be transmitted is May indicate a link for retransmission.

According to various embodiments, in operation 409, the external electronic device or processor may retransmit data (or retransmission data) that failed to be transmitted to the electronic device 101 through a retransmission link. According to one embodiment, when the second link 232 is set as a retransmission link related to the first link 231, the external electronic device 220 transmits data through the first link 231 through the second link 232. Data (or retransmission data) 510 that failed to be transmitted may be retransmitted to the electronic device 101. For example, when there is data to be transmitted through the second link 232, the external electronic device 220 transmits the data and retransmission data through the second link 232 based on the priority of the data and retransmission data. can be transmitted sequentially. For example, the priority of data may be set relatively higher than the priority of retransmitted data. For example, the priority of data may be set relatively lower than the priority of retransmitted data. For example, the priority of data and retransmission data may be set based on the time of occurrence of the data and retransmission data.

According to one embodiment, when the external electronic device 220 determines that transmission of the data 510 retransmitted to the electronic device 101 through the second link 232 has failed, the external electronic device 220 connects the second link based on the retransmission link information. You can check the retransmission link related to (232). When the third link 233 is set as a retransmission link related to the second link 232, the external electronic device 220 transmits data to the electronic device 101 through the second link 232 through the third link 233. Retransmission data 520 that failed to be transmitted can be retransmitted.

According to various embodiments, the external electronic device 220 retransmits data through a link different from the link for transmitting (or retransmitting) data based on retransmission link information, thereby expanding the content window (CW) for retransmission of data. can be limited. The external electronic device 220 can reduce data transmission delay by limiting the expansion of CW for data retransmission.

FIG. 6 is a flowchart 600 for restricting the use of a link in which an error has occurred in an electronic device according to various embodiments. In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel. As an example, the electronic device in FIG. 6 may be the electronic device 101 in FIG. 1 , FIG. 2 , or FIG. 3 . As an example, at least part of FIG. 6 can be explained with reference to FIG. 7 . FIG. 7 is an example of limiting the use of a link in which an error occurred in an electronic device according to various embodiments.

According to various embodiments referring to FIGS. 6 and 7, an electronic device (e.g., electronic device 101) or a processor (e.g., processor 120 of FIG. 1 or processor 300 of FIG. 3) performs operation 601. , a plurality of links for wireless LAN communication with an external electronic device (e.g., the external electronic device 220 of FIG. 2) can be established. According to one embodiment, the processor 300 uses a communication circuit to establish a first link 231, a second link 232, and/or a third link 233 for wireless LAN communication with the external electronic device 220. 310 can be controlled. For example, a plurality of links (e.g., the first link 231, the second link 232, and/or the third link 233) are connected to different frequency bands (e.g., Approximately 2.4 GHz band, approximately 5 GHz band, and/or approximately 6 GHz band) may be supported.

According to various embodiments, an electronic device or a processor (e.g., processor 120 or 300) connects a plurality of links (e.g., first link 231, second link 232, and/or third link) in operation 603. Data may be received from the external electronic device 220 through at least one link (eg, the first link 231) among the links 233. According to one embodiment, when the processor 300 completes decoding of data received from the external electronic device 220, it sends information related to successful reception (e.g., ACK) to the link used to receive the data. The communication circuit 310 can be controlled to transmit to the external electronic device 220. According to one embodiment, when decoding data received from the external electronic device 220 fails, the processor 300 controls the communication circuit 310 to limit transmission of information (e.g., ACK) related to successful reception. You can. According to one embodiment, when the processor 300 fails to decode data received from the external electronic device 220, the processor 300 sends information related to the reception failure (e.g., NACK) to the external electronic device 220 through the link used to receive the data. The communication circuit 310 may be controlled to transmit to 220.

According to various embodiments, the electronic device or processor (eg, processor 120 or 300) may check the number of times retransmission data is received through each link in operation 605. According to one embodiment, the processor 300 provides setting information in the “retry” subfield of the frame control field included in the MAC (media access control) header of the data received through each link. Based on this, it can be determined whether the data is retransmitted data.

According to various embodiments, the electronic device or processor (eg, processor 120 or 300) may check whether a link satisfying a specified error condition exists among a plurality of links in operation 607. According to one embodiment, the processor 300 may determine that a specified error condition is satisfied when the number of receptions of retransmitted data through each link exceeds the specified number of error detections. If the number of times retransmitted data is received through each link is less than or equal to the specified number of error detections, the processor 300 may determine that the specified error condition is not satisfied. According to one embodiment, the processor 300 satisfies the specified error condition when the number of receptions of retransmitted data through each link exceeds the specified number of error detections (or the specified reference number) and the channel state information is below the reference value. It can be judged that If the number of times retransmitted data is received through each link is less than or equal to the specified number of error detections or if the channel state information exceeds the reference value, the processor 300 may determine that the specified error condition is not satisfied. According to one embodiment, the processor 300 may detect the reception rate of retransmission data for each link based on the number of times retransmission data is received through each link during a specified time. If the reception rate of retransmission data for each link exceeds the specified error detection rate, the processor 300 may determine that the specified error condition is satisfied. If the reception rate of retransmission data for each link is less than or equal to the specified error detection rate, the processor 300 may determine that the specified error condition is not satisfied. For example, the reception rate of retransmission data may represent the ratio of the number of times data is received through a specific link at a specified time and the number of times retransmission data is received. As an example, the channel state information may include at least one of channel utilization rate, RSRP, RSRQ, RSSI, or SINR.

According to various embodiments, the electronic device or processor (e.g., processor 120 or 300), if a link that satisfies a specified error condition does not exist (e.g., 'No' in operation 607), uses the link in which the error occurred. One embodiment to limit may end.

According to various embodiments, the electronic device or processor (e.g., processor 120 or 300), if a link exists that satisfies the specified error condition (e.g., 'Yes' in operation 607), in operation 609, determines the specified error condition. You can check other links related to the link that satisfies. According to one embodiment, when a link that satisfies a specified error condition exists, the processor 300 satisfies the specified error condition due to the influence of interference from the adjacent device 700 that the external electronic device 220 does not recognize. It may be determined that an error has occurred in another link related to the link being used. According to one embodiment, the processor 300 may detect another link associated with a link that satisfies a specified error condition based on retransmission link information stored in the memory 320. As an example, another link associated with a link that satisfies a specified error condition may be a link used for the previous (or immediately preceding) reception of data (or retransmitted data) related to retransmitted data received through a link that satisfies the specified error condition. may include. As an example, the retransmission link information may include data (or retransmission data) that failed to be transmitted from the external electronic device 220 when transmission of data (or retransmission data) from the external electronic device 220 to the electronic device 101 through a specific link fails. data) may contain information related to the link through which it is retransmitted. For example, retransmission link information may be set based on a designated pattern. For example, retransmission link information may be set through consultation between the electronic device 101 and the external electronic device 220 at the time the MLO is established (eg, operation 601). For example, a link through which data (or retransmission data) is retransmitted may include a link that is different from a link in which data (or retransmission data) has failed to be transmitted from the external electronic device 220 among a plurality of links.

According to various embodiments, the electronic device or processor (e.g., processor 120 or 300) may restrict the use of other links related to the link that satisfies the specified error condition in operation 611. According to one embodiment, the processor 300 may detect the second link 232 that satisfies a specified error condition among the plurality of links in FIG. 2. The processor 300 may check the first link 231 associated with the second link 232 based on the retransmission link information. As an example, the first link 231 associated with the second link 232 that satisfies the specified error condition is at a time before (or immediately before) the data (or retransmission data) related to the retransmission data received through the second link 232. It can indicate the link used for reception of the point in time).

According to one embodiment, the processor 300 controls the communication circuit 310 to limit the use of the first link 231 through “TID-to-link mapping” negotiation with the external electronic device 220. can do. For example, the processor 300 uses the communication circuit 310 to transmit a “TID-to-link mapping element” in which the mapping between the identification information of the first link 231 and the TID is cancelled, to the external electronic device 220. You can control it.

According to one embodiment, the processor 300 controls the communication circuit 310 to limit the use of the downlink of the first link 231 through “TID-to-link mapping” negotiation with the external electronic device 220. can do. For example, the processor 300 transmits a “TID-to-link mapping element” in which the mapping between the identification information of the downlink 722 of the first link 231 and the TID is canceled to the external electronic device 220. The communication circuit 310 can be controlled. For example, the uplink 724 of the first link 231 may be maintained in an active state. For example, the downlink 722 of the first link 231 may include a link through which the electronic device 101 receives data from the external electronic device 220. For example, the uplink 724 of the first link 231 may include a link through which the electronic device 101 transmits data to the external electronic device 220.

According to various embodiments, a method of operating an electronic device (e.g., the electronic device 101 of FIG. 1, FIG. 2, or FIG. 3) includes operating an external electronic device (e.g., the external electronic device (e.g., the external electronic device 101 of FIG. 2) of FIG. 2 based on wireless LAN communication. 220) and may include an operation of establishing a plurality of links (e.g., the first link 231, the second link 232, and/or the third link 233 in FIG. 2). According to one embodiment, a method of operating an electronic device may include checking at least one of the number of times retransmission data is received or channel state information through each of the plurality of links during a specified time. According to one embodiment, a method of operating an electronic device may be performed when, among a plurality of links, there is a link that satisfies a specified error condition based on at least one of the number of times retransmission data is received or channel state information. It may include checking other links related to the link that satisfies the specified error condition. According to one embodiment, a method of operating an electronic device may include limiting the wireless LAN communication through another link related to a link that satisfies a specified error condition.

According to various embodiments, channel state information may include channel utilization, reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise ratio (SINR). ) may include at least one of

According to various embodiments, a method of operating an electronic device includes checking the reception rate of retransmission data of each link during a specified time based on the number of times of reception of retransmission data of each of a plurality of links, and the reception rate of retransmission data or It may include detecting a link that satisfies a specified error condition based on at least one of channel state information.

According to various embodiments, the operation of checking another link is performed before (or immediately before) receiving retransmission data from an external electronic device through a link that satisfies a specified error condition among a plurality of links based on specified retransmission link information. It may include an operation of checking data related to the retransmission data or another link that received the retransmission data.

According to various embodiments, designated retransmission link information may be set through consultation with an external electronic device at the time of establishing a plurality of links with an external electronic device or after establishing the plurality of links.

According to various embodiments, the operation of limiting wireless LAN communication is an operation of limiting wireless LAN communication through another link related to a link that satisfies a specified error condition through TID-to-link mapping negotiation with an external electronic device. may include.

According to various embodiments, the operation of limiting wireless LAN communication includes limiting reception of data from an external electronic device through a link that satisfies a specified error condition through TID-to-link mapping negotiation with the external electronic device. Can include actions.

According to various embodiments, a method of operating an electronic device transmits data to an external electronic device through a link that satisfies a specified error condition while restricting the reception of data from the external electronic device through a link that satisfies a specified error condition. It may include an operation to maintain the active state of.

According to various embodiments, the operation of limiting wireless LAN communication involves sending a TID-to-link mapping request frame containing information related to limiting the reception of data from an external electronic device through a link that satisfies a specified error condition. It may include an operation of transmitting to an electronic device.

According to various embodiments, a method of operating an electronic device includes identifying retransmitted data in the retry field of a frame control field included in a MAC (media access control) header of data received from an external electronic device. can do.

The embodiments of the present invention disclosed in the specification and drawings are merely presented as specific examples to easily explain the technical content according to the embodiments of the present invention and to aid understanding of the embodiments of the present invention, and do not limit the scope of the embodiments of the present invention. That's not what I want to do. Therefore, the scope of the various embodiments of the present invention should be construed as including all changes or modified forms derived based on the technical idea of the various embodiments of the present invention in addition to the embodiments disclosed herein.

Claims (20)

In electronic devices,
A communication circuit supporting wireless LAN communication, and
comprising a processor operatively connected to the communication circuit,
The processor,
Establishing a plurality of links with an external electronic device through the communication circuit,
Confirming at least one of the number of times retransmission data is received or the channel status through each of the plurality of links during a specified time,
If there is a link among the plurality of links that satisfies a specified error condition based on at least one of the number of receptions of retransmission data or channel state information, another link related to the link that satisfies the specified error condition among the plurality of links exists. check the link,
An electronic device that restricts the wireless LAN communication through another link related to a link that satisfies the specified error condition.
According to clause 1,
The channel state information includes at least one of channel utilization, reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise ratio (SINR). Including electronic devices.
According to clause 1,
The processor determines the reception rate of retransmission data of each link during a specified time based on the number of times retransmission data is received for each of the plurality of links,
An electronic device that detects a link that satisfies a specified error condition based on at least one of the reception rate of the retransmission data or the channel state information.
According to clause 1,
The processor receives data related to the retransmission data or retransmission data before receiving the retransmission data from the external electronic device through a link that satisfies a specified error condition among the plurality of links based on designated retransmission link information. An electronic device that checks other links.
According to clause 4,
The designated retransmission link information is set through consultation with the external electronic device at the time of establishing the plurality of links with the external electronic device or after establishment of the plurality of links.
According to clause 1,
The processor restricts the wireless LAN communication through another link related to the link that satisfies the specified error condition through TID-to-link mapping negotiation with the external electronic device.
According to clause 1,
The processor limits reception of data from the external electronic device through a link that satisfies the specified error condition through TID-to-link mapping negotiation with the external electronic device.
According to clause 7,
The processor determines an active state of data transmission to the external electronic device through a link that satisfies the specified error condition while restricting reception of data from the external electronic device through a link that satisfies the specified error condition. electronic device to maintain.
According to clause 7,
The processor transmits, to the external electronic device, a TID-to-link mapping request frame containing information related to limiting reception of data from the external electronic device through a link that satisfies the specified error condition.
According to clause 1,
The processor identifies retransmission data in a retry field of a frame control field included in a media access control (MAC) header of data received from the external electronic device.
In a method of operating an electronic device,
An operation to establish a plurality of links with an external electronic device based on wireless LAN communication,
An operation of checking the number of times retransmitted data is received through each of the plurality of links during a specified time,
If there is a link among the plurality of links that satisfies a specified error condition based on at least one of the number of receptions of retransmission data or channel state information, another link related to the link that satisfies the specified error condition among the plurality of links exists. an action to check a link, and
A method comprising restricting the wireless LAN communication through another link related to a link that satisfies the specified error condition.
According to clause 11,
The channel state information includes at least one of channel utilization, reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise ratio (SINR). How to include it.
According to clause 11,
An operation of checking the reception rate of retransmission data of each link during a specified time based on the number of times of reception of retransmission data of each of the plurality of links, and
The method further includes detecting a link that satisfies a specified error condition based on at least one of the reception rate of the retransmission data or the channel state information.
According to clause 11,
The operation of checking the other links above is,
Before receiving retransmission data from the external electronic device through a link that satisfies a specified error condition among the plurality of links based on designated retransmission link information, confirm data related to the retransmission data or another link that received the retransmission data. A method that includes the action of doing something.
According to clause 14,
The designated retransmission link information is set through consultation with the external electronic device at the time of establishing the plurality of links with the external electronic device or after establishment of the plurality of links.
According to claim 11,
The operation of restricting the wireless LAN communication is,
A method comprising restricting the wireless LAN communication through another link related to a link that satisfies the specified error condition through TID-to-link mapping negotiation with the external electronic device.
According to claim 11,
The operation of restricting the wireless LAN communication is,
A method comprising limiting reception of data from the external electronic device through a link that satisfies the specified error condition through TID-to-link mapping negotiation with the external electronic device.
According to clause 17,
An operation of maintaining an active state of data transmission to the external electronic device through a link that satisfies the specified error condition while restricting reception of data from the external electronic device through a link that satisfies the specified error condition. How to include more.
According to clause 17,
The operation of restricting the wireless LAN communication is,
A method comprising transmitting to the external electronic device a TID-to-link mapping request frame containing information related to limiting reception of data from the external electronic device through a link that satisfies the specified error condition.
According to clause 11,
The method further includes identifying retransmission data in a retry field of a frame control field included in a media access control (MAC) header of data received from the external electronic device.

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