KR20220040090A - Electronic device for selecting uplink channel based on status of the uplink channel and method for the same - Google Patents

Abstract

According to various embodiments of the present invention, provided are an electronic device and an operating method thereof. The electronic device comprises a communication processor, wherein the communication processor can be configured to receive information on a second node for supporting a second transmission channel (supplementary uplink) corresponding to a second frequency band while performing a connection between a first transmission channel (normal uplink) and a first reception channel (normal downlink), corresponding to a first frequency band; to check a characteristic of the first transmission channel; and to connect with the second node through the second transmission channel, in response to a fact that the characteristic of the first transmission channel satisfies a specified condition.

Description

An electronic device that selects an uplink based on the status of an uplink channel and an operating method of the electronic device

Various embodiments of the present disclosure relate to an electronic device and a method of operating the electronic device, and to a technology for changing a connected uplink based on a state of a channel.

Efforts are being made to develop an improved 5G communication system or pre-5G communication system in order to meet the increasing demand for wireless data traffic after commercialization of the 4G communication system. For this reason, the 5G communication system or the pre-5G communication system is called a system after the 4G network (Beyond 4G Network) communication system or the LTE system after (Post LTE). In order to achieve a high data rate, the 5G communication system is implemented in a very high frequency (mmWave) band (such as a band of 6 gigabytes (6GHz) or more) in addition to the band used by LTE (band below 6 gigabytes (6GHz)). are being considered In the 5G communication system, beamforming, massive MIMO, Full Dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

The cellular network system used by the electronic device may include a node providing a normal uplink and a node providing a secondary uplink in order to extend the coverage of the uplink. The frequency band used by the secondary uplink may have a lower frequency band than the frequency band used by the general uplink. The coverage of the node providing the secondary uplink may be relatively wider than the coverage of the node providing the normal uplink due to the characteristics of the frequency band used by the secondary uplink. However, since the frequency bandwidth of the auxiliary uplink is smaller than that of the general uplink, the data transmission rate using the auxiliary uplink may be smaller than the data transmission rate using the general uplink.

While the electronic device is connected to the general uplink, the data transmission rate using the general uplink may be lower than the data transmission rate using the secondary uplink due to various reasons. It may be difficult for a base station to select an uplink to be used by the electronic device to quickly track a quality change of a general uplink or a secondary uplink. Until the electronic device receives the information instructing to change the uplink to be used from the node, the electronic device performs data transmission using the previously connected uplink, and the data transmission speed is lowered or the data transmission channel cannot be connected. can occur

An electronic device according to various embodiments of the present disclosure includes a communication processor, wherein the communication processor operates to a first node through a first transmission channel (normal uplink) and a first reception channel (normal downlink) corresponding to a first frequency band. Receives information on a second node supporting a second transmission channel (supplementary uplink) corresponding to a second frequency band while performing a connection with a second frequency band, confirms a characteristic of the first transmission channel, and performs the first transmission In response to a channel characteristic satisfying a specified condition, it may be configured to connect with the second node through the second transport channel.

In a method of operating an electronic device according to various embodiments of the present disclosure, while performing a connection with a first node through a first transmission channel (normal uplink) and a first reception channel (normal downlink) corresponding to a first frequency band, receiving information on a second node supporting a second transmission channel (supplementary uplink) corresponding to a second frequency band; checking a characteristic of the first transport channel; and performing a connection with the second node through the second transport channel in response to the characteristic of the first transport channel satisfying a specified condition.

An electronic device and an operating method of the electronic device according to various embodiments of the present disclosure check a state of a first transport channel, and in response to a state of the first transport channel satisfy a specified condition, connect to a second transport channel It can try and establish a connection with a node that provides a second transport channel. Accordingly, the electronic device and the method of operating the electronic device may use a transmission channel having a high transmission rate before receiving information instructing to change the transmission channel from the cellular network, and may increase the data transmission rate.

1 is a block diagram of an electronic device according to various embodiments of the present disclosure;
2 is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments of the present disclosure;
3 is a diagram illustrating a protocol stack structure of a network 100 of legacy communication and/or 5G communication according to embodiments.
4 is a diagram illustrating wireless communication systems that provide networks of legacy communication and/or 5G communication according to various embodiments of the present disclosure.
5 is a diagram illustrating an electronic device, a first node, and a second node according to various embodiments of the present disclosure;
6 is a block diagram of an electronic device according to various embodiments of the present disclosure;
7 is a diagram illustrating an embodiment in which an electronic device accesses one of a first transport channel and a second transport channel according to various embodiments of the present disclosure;
8 is a diagram illustrating an embodiment in which an electronic device accesses a second transmission channel according to various embodiments of the present disclosure;
9 is a diagram illustrating an embodiment in which an electronic device sequentially attempts to access a first transport channel and a second transport channel according to various embodiments of the present disclosure;
10 is a diagram illustrating an embodiment in which an electronic device accesses a first transmission channel according to various embodiments of the present disclosure;
11 is an operation flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound 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 an antenna module 197 may be included. 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 (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 may use less power than the main processor 121 or may be set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The auxiliary processor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the co-processor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190). there is. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ). The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a 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 an application 146 .

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

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

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

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . A sound may be output through the electronic device 102 (eg, a speaker or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric 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, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an 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 an 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 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

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

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of 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, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, 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 (eg, : It may include a LAN (local area network) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses the subscriber information (eg, 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 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes 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)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 includes various technologies for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less).

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

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

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

According to an embodiment, the command 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 the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 is to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may 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 an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

2 is a block diagram 200 of an electronic device 101 for supporting legacy network communication and 5G network communication, according to various embodiments. Referring to FIG. 2 , the electronic device 101 includes a first communication processor 212 , a second communication processor 214 , a first radio frequency integrated circuit (RFIC) 222 , a second RFIC 224 , and a third RFIC 226 , a fourth RFIC 228 , a first radio frequency front end (RFFE) 232 , a second RFFE 234 , a first antenna module 242 , a second antenna module 244 , and an antenna (248) may be included. The electronic device 101 may further include a processor 120 and a memory 130 . The network 199 may include a first network 292 and a second network 294 . According to another embodiment, the electronic device 101 may further include at least one component among the components illustrated in FIG. 1 , and the network 199 may further include at least one other network. According to one embodiment, a first communication processor 212 , a second communication processor 214 , a first RFIC 222 , a second RFIC 224 , a fourth RFIC 228 , a first RFFE 232 , and the second RFFE 234 may form at least a part of the wireless communication module 192 . According to another embodiment, the fourth RFIC 228 may be omitted or may be included as a part of the third RFIC 226 .

The first communication processor 212 may support establishment of a communication channel of a band to be used for wireless communication with the first network 292 and legacy network communication through the established communication channel. According to various embodiments, the first network may be a legacy network including a second generation (2G), 3G, 4G, or long term evolution (LTE) network. The second communication processor 214 establishes a communication channel corresponding to a designated band (eg, about 6 GHz to about 60 GHz) among bands to be used for wireless communication with the second network 294, and 5G network communication through the established communication channel can support According to various embodiments, the second network 294 may be a 5G network defined by 3GPP. Additionally, according to an embodiment, the first communication processor 212 or the second communication processor 214 is configured to correspond to another designated band (eg, about 6 GHz or less) among bands to be used for wireless communication with the second network 294 . It is possible to support the establishment of a communication channel, and 5G network communication through the established communication channel. According to one embodiment, the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package. According to various embodiments, the first communication processor 212 or the second communication processor 214 may be formed in a single chip or a single package with the processor 120 , the co-processor 123 , or the communication module 190 . there is.

The first RFIC 222, when transmitting, transmits a baseband signal generated by the first communication processor 212 to about 700 MHz to about 3 GHz used in the first network 292 (eg, a legacy network). can be converted to a radio frequency (RF) signal of Upon reception, an RF signal is obtained from a first network 292 (eg, a legacy network) via an antenna (eg, a first antenna module 242 ) and via an RFFE (eg, a first RFFE 232 ). It may be preprocessed. The first RFIC 222 may convert the preprocessed RF signal into a baseband signal to be processed by the first communication processor 212 .

The second RFIC 224, when transmitting, transmits the baseband signal generated by the first communication processor 212 or the second communication processor 214 to the second network 294 (eg, a 5G network). It can be converted into an RF signal (hereinafter, 5G Sub6 RF signal) of the Sub6 band (eg, about 6 GHz or less). Upon reception, a 5G Sub6 RF signal is obtained from the second network 294 (eg, 5G network) via an antenna (eg, second antenna module 244 ), and RFFE (eg, second RFFE 234 ) can be pre-processed. The second RFIC 224 may convert the preprocessed 5G Sub6 RF signal into a baseband signal to be processed by a corresponding one of the first communication processor 212 or the second communication processor 214 .

The third RFIC 226 transmits the baseband signal generated by the second communication processor 214 to the RF of the 5G Above6 band (eg, about 6 GHz to about 60 GHz) to be used in the second network 294 (eg, 5G network). It can be converted into a signal (hereinafter referred to as 5G Above6 RF signal). Upon reception, a 5G Above6 RF signal may be obtained from the second network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and pre-processed via a third RFFE 236 . The third RFIC 226 may convert the preprocessed 5G Above6 RF signal into a baseband signal to be processed by the second communication processor 214 . According to one embodiment, the third RFFE 236 may be formed as part of the third RFIC 226 .

According to an embodiment, the electronic device 101 may include the fourth RFIC 228 separately from or as at least a part of the third RFIC 226 . In this case, the fourth RFIC 228 converts the baseband signal generated by the second communication processor 214 into an RF signal (hereinafter, IF signal) of an intermediate frequency band (eg, about 9 GHz to about 11 GHz). After conversion, the IF signal may be transmitted to the third RFIC 226 . The third RFIC 226 may convert the IF signal into a 5G Above6 RF signal. Upon reception, a 5G Above6 RF signal may be received from the second network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and converted to an IF signal by a third RFIC 226 . . The fourth RFIC 228 may convert the IF signal into a baseband signal for processing by the second communication processor 214 .

According to one embodiment, the first RFIC 222 and the second RFIC 224 may be implemented as at least a part of a single chip or a single package. According to an embodiment, the first RFFE 232 and the second RFFE 234 may be implemented as at least a part of a single chip or a single package. According to an example, at least one antenna module of the first antenna module 242 or the second antenna module 244 may be omitted or may be combined with another antenna module to process RF signals of a plurality of corresponding bands.

According to an embodiment, the third RFIC 226 and the antenna 248 may be disposed on the same substrate to form the third antenna module 246 . For example, the wireless communication module 192 or the processor 120 may be disposed on the first substrate (eg, main PCB). In this case, the third RFIC 226 is located in a partial area (eg, the bottom surface) of the second substrate (eg, sub PCB) separate from the first substrate, and the antenna 248 is located in another partial region (eg, the top surface). is disposed, the third antenna module 246 may be formed. By disposing the third RFIC 226 and the antenna 248 on the same substrate, it is possible to reduce the length of the transmission line therebetween. This, for example, can reduce loss (eg, attenuation) of a signal in a high-frequency band (eg, about 6 GHz to about 60 GHz) used for 5G network communication by the transmission line. Accordingly, the electronic device 101 may improve the quality or speed of communication with the second network 294 (eg, a 5G network).

According to an example, the antenna 248 may be formed as an antenna array including a plurality of antenna elements that can be used for beamforming. In this case, the third RFIC 226 may include, for example, as a part of the third RFFE 236 , a plurality of phase shifters 238 corresponding to a plurality of antenna elements. During transmission, each of the plurality of phase shifters 238 may transform the phase of a 5G Above6 RF signal to be transmitted to the outside of the electronic device 101 (eg, a base station of a 5G network) through a corresponding antenna element. . Upon reception, each of the plurality of phase shifters 238 may convert the phase of the 5G Above6 RF signal received from the outside through a corresponding antenna element into the same or substantially the same phase. This enables transmission or reception through beamforming between the electronic device 101 and the outside.

The second network 294 (eg, 5G network) may be operated independently (eg, Stand-Alone (SA)) or connected to the first network 292 (eg, legacy network) (eg: Non-Stand Alone (NSA)). For example, the 5G network may have only an access network (eg, a 5G radio access network (RAN) or a next generation RAN (NG RAN)), and may not have a core network (eg, a next generation core (NGC)). In this case, after accessing the access network of the 5G network, the electronic device 101 may access an external network (eg, the Internet) under the control of a core network (eg, evolved packed core (EPC)) of the legacy network. Protocol information for communication with a legacy network (eg, LTE protocol information) or protocol information for communication with a 5G network (eg, New Radio (NR) protocol information) is stored in the memory 230, and other components (eg, a processor 120 , the first communication processor 212 , or the second communication processor 214 ).

3 is a diagram illustrating a protocol stack structure of the network 100 of legacy communication and/or 5G communication according to embodiments.

Referring to FIG. 3 , the network 100 according to the illustrated embodiment may include an electronic device 101 , a legacy network 392 , a 5G network 394 , and a server 108 .

The electronic device 101 may include an Internet protocol 312 , a first communication protocol stack 314 , and a second communication protocol stack 316 . The electronic device 101 may communicate with the server 108 through the legacy network 392 and/or the 5G network 394 .

According to an embodiment, the electronic device 101 may perform Internet communication associated with the server 108 using the Internet protocol 312 (eg, TCP, UDP, or IP). The Internet protocol 312 may be executed, for example, in a main processor (eg, the main processor 121 of FIG. 1 ) included in the electronic device 101 .

According to another embodiment, the electronic device 101 may wirelessly communicate with the legacy network 392 using the first communication protocol stack 314 . According to another embodiment, the electronic device 101 may wirelessly communicate with the 5G network 394 using the second communication protocol stack 316 . The first communication protocol stack 314 and the second communication protocol stack 316 may be executed, for example, in one or more communication processors (eg, the wireless communication module 192 of FIG. 1 ) included in the electronic device 101 . there is.

The server 108 may include an Internet protocol 322 . The server 108 may transmit/receive data related to the electronic device 101 and the Internet protocol 322 through the legacy network 392 and/or the 5G network 394 . According to one embodiment, server 108 may include a cloud computing server residing outside legacy network 392 or 5G network 394 . In other embodiments, the server 108 may include an edge computing server (or mobile edge computing (MEC) server) located inside at least one of the legacy network or the 5G network 394 .

The legacy network 392 may include an LTE base station 340 and an EPC 342 . The LTE base station 340 may include an LTE communication protocol stack 344 . EPC 342 may include legacy NAS protocol 346 . The legacy network 392 may perform LTE wireless communication with the electronic device 101 using the LTE communication protocol stack 344 and the legacy NAS protocol 346 .

The 5G network 394 may include an NR base station 350 and a 5GC 352 . The NR base station 350 may include an NR communication protocol stack 354 . 5GC 352 may include 5G NAS protocol 356 . The 5G network 394 may perform NR wireless communication with the electronic device 101 using the NR communication protocol stack 354 and the 5G NAS protocol 356 .

According to one embodiment, the first communication protocol stack 314 , the second communication protocol stack 316 , the LTE communication protocol stack 344 and the NR communication protocol stack 354 include a control plane protocol for sending and receiving control messages and It may include a user plane protocol for transmitting and receiving user data. The control message may include, for example, a message related to at least one of security control, bearer establishment, authentication, registration, or mobility management. The user data may include, for example, data other than the control message.

According to an embodiment, the control plane protocol and the user plane protocol may include physical (PHY), medium access control (MAC), radio link control (RLC), or packet data convergence protocol (PDCP) layers. The PHY layer, for example, channel-codes and modulates data received from an upper layer (e.g., MAC layer) and transmits it to a radio channel, demodulates and decodes data received through the radio channel, and transmits it to an upper layer. there is. The PHY layer included in the second communication protocol stack 316 and the NR communication protocol stack 354 may further perform an operation related to beam forming. The MAC layer may, for example, logically/physically map data to/from a wireless channel to transmit/receive data, and may perform hybrid automatic repeat request (HARQ) for error correction. The RLC layer may perform concatenation, segmentation, or reassembly of data, and order check, rearrangement, or redundancy check of data, for example. The PDCP layer may perform operations related to, for example, encryption of control messages and user data and data integrity. The second communication protocol stack 316 and the NR communication protocol stack 354 may further include a service data adaptation protocol (SDAP). SDAP may manage radio bearer assignment based on, for example, Quality of Service (QoS) of user data.

According to various embodiments, the control plane protocol may include a radio resource control (RRC) layer and a non-access stratum (NAS) layer. The RRC layer may process control data related to, for example, radio bearer establishment, paging, or mobility management. The NAS may process control messages related to, for example, authentication, registration, and mobility management.

4 is a diagram illustrating wireless communication systems that provide a network of cellular communication according to various embodiments of the present disclosure.

Referring to FIG. 4 , the network environment 100A may include a cellular communication network. The cellular communication network includes a New Radio (NR) base station (eg, gNB (gNodeB)) supporting wireless connection with the electronic device 101 and a core network 430 for managing 5G communication of the electronic device 101 ( For example, 5GC (5th generation core) may be included. As another example, the cellular communication network includes a 4G or LTE base station (eg, eNB (eNodeB)) of the 3GPP standard supporting wireless connection with the electronic device 101 and a core network 430 for managing 4G communication (eg, : may include an evolved packet core (EPC).

According to various embodiments, the electronic device 101 may transmit/receive a control message and user data through cellular communication. The control message is, for example, a message related to at least one of security control, bearer setup, authentication, registration, or mobility management of the electronic device 101 . may include. The user data may mean, for example, user data excluding a control message transmitted/received between the electronic device 101 and the core network 430 .

Referring to FIG. 4 , the electronic device 101 according to an embodiment uses at least a part of a cellular communication network (eg, a master node 410 , a secondary node 420 , and a core network 430 ) to receive a control message or a user At least one of data may be transmitted/received.

According to various embodiments, in the MR-DC environment, at least one of the plurality of base stations 410 and 420 operates as a master node 410 and the other is a secondary node 420 . ) can work. The master node 410 may be connected to the core network 430 to transmit and receive control messages. The master node 410 and the secondary node 420 may be connected through a network interface to transmit/receive messages related to radio resource (eg, communication channel) management with each other.

According to various embodiments, the master node 410 and the secondary node 420 may be entities performing communication using signals of different frequency bands. According to an embodiment, the master node 410 may be a base station that transmits or receives a signal of the first frequency band. The secondary node 420 may be a base station that transmits or receives a signal of the second frequency band.

According to various embodiments of the present disclosure, the first frequency band may mean a higher frequency band than the second frequency band.

For example, the first frequency band may be a signal of 6 GHz or less (eg, frequency range 1 (FR 1)) or a signal of 6 GHz or more (eg, FR 2). The second frequency band may be a signal of 1 GHz or less (eg, 700 MHz).

According to another embodiment of the present invention, when the master node 410 and the secondary node 420 support dynamic spectrum share (DSS), the first frequency band and the second frequency band are substantially the same frequency It could be a band.

According to various embodiments of the present disclosure, the first frequency band is a relatively high frequency band compared to the second frequency band, and cellular communication using the first frequency band uses a wider bandwidth than cellular communication using the second frequency band. Therefore, high-speed data transmission may be possible. However, since the signal of the first frequency band has high straightness compared to the signal of the second frequency band, path loss and loss due to an external object may be high. Accordingly, a signal transmission operation through cellular communication using the first frequency band may require higher power than a signal transmission operation through cellular communication using the second frequency band.

5 is a diagram illustrating an electronic device, a first node, and a second node according to various embodiments of the present disclosure;

According to various embodiments of the present disclosure, the cellular network 500 may include a first node (eg, the master node 410 of FIG. 4 ) and a second node (eg, the secondary node 420 of FIG. 4 ). there is.

According to various embodiments of the present disclosure, the first node 410 may be a base station supporting communication through the first frequency band 530 . The first frequency band 530 may be a frequency band including the first transmission channel 530-1 and the first reception channel 530-2. Although FIG. 5 illustrates that the first transmission channel 530-1 and the first reception channel 530-2 are implemented in different frequency bands, when the cellular network 500 supports time division duplex (TDD) , the first transmission channel 530-1 and the first reception channel 530-2 may be implemented in the same frequency band.

According to various embodiments of the present disclosure, the second node 420 may be a base station supporting communication through the second frequency band 520 . The second frequency band 520 may be a frequency band including the second transmission channel 520-1.

According to various embodiments of the present invention, the frequency band of the second transmission channel 520-1 may be a lower frequency band than the frequency band of the first transmission channel 530-1. Due to the characteristics of the second transmission channel 520-1 having a relatively low frequency band, the coverage 503 of the second node 420 may have a wider area than the coverage 501 of the first node 410. .

According to various embodiments of the present invention, the second transport channel 520-1 may be a supplementary uplink (SUL), which is a channel introduced to extend the coverage of the first transport channel 510-1. In this case, the first transport channel 510-1 may be a normal uplink (NUL), which is a generally used channel.

According to various embodiments of the present invention, the first transmission channel 530-1 may implement a higher data transmission rate than the second transmission channel 520-1. The electronic devices (eg, the electronic device 101 of FIG. 1 ) 510 - 1 and 510 - 2 that perform data communication through the cellular network 500 preferentially use the first transmission channel 530-1 to data can be transmitted. The electronic devices 510-1 and 510-2 determine that the quality of the first transmission channel 530-1 is specified under a specified condition (eg, the quality of the first transmission channel 530-1 makes it difficult to guarantee the data transmission rate). Data transmission through the second transmission channel 520-1 may be performed in response to satisfaction of the condition indicating the presence of the data.

Referring to FIG. 5 , the electronic device 510-1 may exist within the coverage 501 of the first node 410 . When the electronic device 510-1 exists in the coverage 501 of the first node 410, the data transmission rate through the first transmission channel 530-1 is determined through the second transmission channel 520-1. It can be higher than the data transfer rate. The electronic device 510-1 may transmit data through the first transmission channel 530-1.

On the other hand, the electronic device 510 - 2 may exist outside the coverage 501 of the first node 410 . When the electronic device 510 - 2 does not exist in the coverage 501 of the first node 410 , the data transmission rate through the second transmission channel 520-1 sets the first transmission channel 530-1. It may be higher than the data transfer rate through The electronic device 510 - 2 may transmit data through the second transmission channel 520-1.

Considering a situation in which the electronic device 510-1 moves from inside the coverage 501 of the first node 410 to outside the coverage 501 (eg, a location where the electronic device 510-2 exists) , the electronic device 510-1 may continuously decrease the data transmission rate through the first transmission channel 530-1. It may be appropriate for the electronic device 510-1 to transmit data through the second transmission channel 520-1 instead of the first transmission channel 530-1 in terms of data transmission speed.

Considering a situation in which the electronic device 510-2 moves from the outside of the coverage 503 of the first node 410 to the inside (eg, a location where the electronic device 510-1 exists), the electronic device 510 For -2), it may be appropriate to transmit data through the first transmission channel 530-1 instead of the second transmission channel 520-1 in view of the data transmission rate.

According to various embodiments of the present disclosure, the core network of the cellular network 500 (eg, the core network 430 of FIG. 4 ) is a transmission channel (eg, the first The electronic device 510-1, selects a transmission channel 530-1 and the second transmission channel 520-1), and enables the electronic devices 510-1 and 510-2 to transmit data through the selected transmission channel. 510-2) can be controlled. The core network 430 transmits a message including information on a transport channel to be used by the electronic devices 510 - 1 and 510 - 2 through the first node 410 and/or the second node 420 (eg, downlink control). information (DCI)) to the electronic devices 510-1 and 510-2.

However, it may be difficult for the cellular network 500 (or the core network 430 ) to quickly track quality changes of the first transport channel 530-1 and the second transport channel 520-1. As the quality of the first transmission channel 530-1 and the second transmission channel 520-1 is rapidly lowered, a situation in which the electronic devices 510-1 and 510-2 cannot use the currently connected transmission channel may occur. and, until the cellular network 500 or the core network 430 transmits a message indicating to use another transport channel, the electronic devices 510 - 1 and 510 - 2 transmit a transmission channel having a low data transmission rate. may continue to be used or, furthermore, may be in a state in which connection of a transport channel is impossible.

Hereinafter, an embodiment in which the electronic devices 510 - 1 and 510 - 2 use a different transmission channel in response to a change in the quality of the transmission channel will be described.

6 is a block diagram of an electronic device according to various embodiments of the present disclosure;

Referring to FIG. 6 , an electronic device (eg, the electronic devices 510 - 1 and 510 - 2 of FIG. 5 ) 600 according to various embodiments of the present disclosure includes a communication processor (eg, the communication module 190 of FIG. 1 ). ) or the second communication processor 214)) 610 of FIG. 2 .

According to various embodiments of the present disclosure, the communication processor 610 may be configured as a first node (eg, first node 410 in FIG. 5 ) and/or at a second node (eg, second node 420 in FIG. 5 ). and cellular communication can be performed. The communication processor 610 may transmit user data received from the application processor (eg, the processor 120 of FIG. 1 ) to the first node 410 and/or the second node 420 through cellular communication, The user data received from the first node 410 may be transmitted to the application processor 120 . The cellular communication may refer to any one communication method among various cellular communication methods that the electronic device 600 can support. For example, the cellular communication may be any one of 5G mobile communication methods (eg, 5G).

According to various embodiments of the present disclosure, cellular communication through the first node 410 may be cellular communication using a first frequency band, and cellular communication through the second node 420 is cellular using a second frequency band. It could be communication.

According to various embodiments of the present disclosure, the communication processor 610 may attempt to access a channel provided by a cellular network (eg, the cellular network 500 of FIG. 5 ) in order to use cellular communication.

According to various embodiments of the present disclosure, the communication processor 610 is based on the access information of the first node 410 included in a system information block (SIB) broadcast by the first node 410 . An attempt may be made to access the first node 410 . The communication processor 610 may attempt to access the first node 410 using a random access channel (RACH) provided by the first node 410 . The system information block may include access information of the second node 420 .

According to various embodiments of the present disclosure, the communication processor 610 performs the quality (eg, reference signal received power (RSRP)) of the channel (eg, the first transmission channel 530-1) provided by the first node 410 . ) and whether the value indicating the quality of the channel is greater than or equal to a preset value. The preset value may be included in a message (eg, RRC IE RACH-ConfigCommon) included in the system information block (eg, SIB 1), and the communication processor 610 checks the preset value based on the system information block and , it is possible to check whether the value indicating the quality of the channel is greater than or equal to a preset value.

According to various embodiments of the present disclosure, the communication processor 610 may attempt to access the first node 410 in response to confirming that the value indicating the quality of the channel is greater than (or greater than) a preset value. there is. When the connection to the first node 410 is completed, the electronic device 600 transmits data through a first transmission channel (eg, the first transmission channel 530-1 of FIG. 5 ), and transmits data through the first reception channel Data may be received through (eg, the first reception channel 530 - 2 of FIG. 5 ).

According to various embodiments of the present disclosure, in response to confirming that the value indicating the quality of the channel is less than (or less than) a preset value, the communication processor 610 responds to the second transmission channel (eg, the second An attempt may be made to access the second node 420 through the transmission channel 520-1). When the connection to the second node 420 is completed, the electronic device 600 transmits data through the second transmission channel 520-1 and receives data through the first reception channel 530-2. can

According to various embodiments of the present disclosure, the communication processor 610 transmits data to the first node 410 through the first transmission channel 530-1, or transmits data through the first reception channel 530-2. While receiving from the first node 410 , it is possible to check the characteristics of the first transmission channel 530-1. The communication processor 610 may check the characteristics of the first transmission channel 530-1 every preset period.

According to various embodiments of the present invention, the characteristic of the first transmission channel 530-1 may be a characteristic related to the quality of the first transmission channel.

For example, the characteristic of the first transmission channel 530-1 may include a block error rate (BLER). As the block error rate increases, the quality of the first transmission channel may be low.

For another example, the characteristic of the first transport channel 530-1 is a message indicating that reception of data transmitted to the first node 410 through the first transport channel 530-1 fails (eg: It may include the number of times of reception of a radio link control (RLC) NACK message or a medium access control (MAC) NACK message). As the number of times of receiving the message indicating failure in data reception increases, the quality of the first transmission channel 530-1 may be low.

As another example, the characteristic of the first transmission channel 530-1 may include a value indicating the quality of the first transmission channel 530-1. For example, the characteristic of the first transmission channel 530-1 may be any one of reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to noise ratio (SNR). As the value of RSRP, RSRQ, or SNR increases, the quality of the first transport channel 530-1 may increase.

As another example, the characteristic of the first transmission channel 530-1 may include a power headroom of a signal to be transmitted through the first transmission channel 530-1. The power headroom may mean a difference between the maximum strength of a signal that the electronic device 600 can output and the signal strength required for the electronic device 600 to transmit a signal to the first node 410 . A reduction in power headroom may mean that a signal strength required for the electronic device 600 to transmit a signal to the first node 410 increases, and the electronic device 600 transmits a signal to the first node 410 ( An increase in the strength of a signal required for transmitting a signal to the 410 ) may mean that the quality of the first transmission channel 530-1 decreases.

According to various embodiments of the present disclosure, the communication processor 610 checks the characteristics of the first transmission channel 530-1, and checks whether the characteristics of the first transmission channel 530-1 satisfy a specified condition. can

According to various embodiments of the present disclosure, the specified condition may mean a condition for changing a transmission channel used for data transmission from the first transmission channel 530-1 to the second transmission channel 520-1. Satisfying the specified condition may mean that a transmission rate when data is transmitted through the first transmission channel 530-1 is lower than a transmission rate when data is transmitted through the second transmission channel 520-1. .

According to various embodiments of the present invention, the specified condition may be a condition related to the quality of the first transport channel.

According to an embodiment, the specified condition may include a condition related to a block error rate (BLER) of the first transmission channel 530-1. For example, the specified condition may include whether the block error rate of the first transmission channel 530-1 is greater than (or greater than) a specified value (eg, 20%).

According to an embodiment, the specified condition is a message indicating that reception of data transmitted to the first node 410 through the first transmission channel 530-1 fails (eg, a radio link control (RLC) NACK message). Alternatively, it may include a condition related to the number of times of reception of a medium access control (MAC) NACK message). For example, the specified condition may include whether the number of times of reception of a message indicating that data reception has failed is greater than (or greater than) a specified value (eg, half of the maximum number of retransmissions). The maximum number of retransmissions may be included in a message (eg, an RRC Reconfiguration message) transmitted during a connection operation between the first node 410 and the electronic device 600 .

According to an embodiment, the specified condition may be a condition related to a value indicating the quality of the first transmission channel 530-1. For example, in the specified condition, a value indicating the quality of the first transport channel 530-1 is less than or equal to a preset value (eg, the difference between RSRP-thresholdSSB-SUL or RSRP-thresholdSSB-SUL and a hysteresis value) (or, less than) may include whether.

According to an embodiment, the specified condition may be a condition related to power headroom of a signal to be transmitted through the first transmission channel 530-1. For example, the specified condition may include whether the power headroom is less than (or less than) a preset value (eg, -5dB). The maximum intensity of a signal output by the electronic device 600 may change according to the remaining capacity of the battery of the electronic device 600 (eg, the battery 189 in FIG. 1 ) and the temperature of the electronic device 600 , In this case, the power headroom may be a value that varies depending on the state of the electronic device 600 . The communication processor 610 may determine a signal strength required for the electronic device 600 to transmit a signal to the first node 410 based on the quality measurement result of the first transmission channel 530-1. The communication processor 610 generates power based on a difference between the maximum strength of a signal output by the electronic device 600 and a signal strength required for the electronic device 600 to transmit a signal to the first node 410 . You can calculate (or check) headroom.

According to various embodiments of the present disclosure, the specified condition may include at least one or more of the aforementioned conditions, and may be implemented as a combination of at least two or more of the aforementioned conditions.

According to various embodiments of the present disclosure, the communication processor 610 performs the second transmission through the second transmission channel 520-1 based on whether the characteristic of the first transmission channel 530-1 satisfies a specified condition. A connection to the node 420 may be performed. In response to confirming that the characteristic of the first transmission channel 530-1 satisfies the specified condition, the communication processor 610 establishes a connection with the second node 420 through the second transmission channel 520-1. can

According to various embodiments of the present invention, the communication processor 610 attempts to access the second node 420 using a random access channel (RACH), and the second transmission channel 520-1). data may be transmitted to the second node 420 through

According to various embodiments of the present disclosure, the communication processor 610 performs a connection with the second node 420 through the second transmission channel 520-1 while maintaining the connection with the first node 410 . can do. In this case, the communication processor 610 may receive data through the first reception channel 530 - 2 and transmit data through the second transmission channel 520-1 .

According to various embodiments of the present invention, the second transport channel 520-1 may be a supplementary uplink (SUL), which is a channel introduced to extend the coverage of the first transport channel 530-1. In this case, the first transport channel 510-1 may be a normal uplink (NUL), which is a generally used channel.

In the electronic device 600 according to various embodiments of the present disclosure, through the above method, the cellular network 500 or the core network (eg, the core network 430 of FIG. 4 ) transmits the first transmission channel 530- Before instructing to perform data transmission to the second transmission channel 520-1 in 1), a transmission channel on which data transmission is to be performed is set from the first transmission channel 530-1 to the second transmission channel 520-1 , it is possible to change the transmission channel quickly according to a change in the state of the channel, and it is possible to implement a high data transmission rate.

According to various embodiments of the present disclosure, the electronic device 600 requires a random access with the first node 410 due to various causes (eg, timing alignment timer expiration, SR maximum transmission count exceeded) (eg: resource used for data transmission through the first transmission channel 530-1 is released). The communication processor 610 may detect a trigger of data transmission in a state in which random access with the first node 410 is required, and may attempt a random access to the first node 410 for data transmission.

According to various embodiments of the present disclosure, the communication processor 610 may fail the random access to the first node 410 due to various causes. In response to detecting the failure of the random access to the first node 410, the communication processor 610 sends a message indicating that the connection (or access) to the first node 410 fails to the first node ( Before transmission to 410 , an attempt may be made to access the second node 420 through the second transmission channel 520-1. When the communication processor 610 succeeds in accessing the second node 420 through the second transmission channel 520-1, the communication processor 610 may transmit data through the second transmission channel 520-1. When the communication processor 610 fails to access the second node 420 through the second transmission channel 520-1, the communication processor 610 determines that the connection (or access) through the first transmission channel 530-1 fails. The indicating message may be transmitted to the first node 410 .

According to various embodiments of the present invention, the communication processor 610 transmits data through the second transmission channel 520-1 in a state in which the connection to the second node 420 is completed (RRC Connected state), and Data may be received through one reception channel 530 - 2 . The communication processor 610 transmits data to the second node 420 through the second transmission channel 520-1, or receives data from the first node 410 through the first reception channel 530-2. In the meantime, the characteristics of the first transmission channel 530-1 may be checked. The communication processor 610 may check the characteristics of the first transmission channel 530-1 every preset period.

According to various embodiments of the present invention, the characteristic of the first transmission channel 530-1 may include a value indicating the quality of the first transmission channel 530-1. For example, the characteristic of the first transmission channel 530-1 may be any one of reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to noise ratio (SNR). As the value of RSRP, RSRQ, or SNR increases, the quality of the first transport channel 530-1 may increase.

According to various embodiments of the present disclosure, the communication processor 610 checks the characteristics of the first transmission channel 530-1, and checks whether the characteristics of the first transmission channel 530-1 satisfy a specified condition. can

According to various embodiments of the present disclosure, the specified condition may mean a condition for changing a transmission channel used for data transmission from the second transmission channel 520-1 to the first transmission channel 530-1. Satisfying the specified condition may mean that a transmission rate when data is transmitted through the second transmission channel 520-1 is lower than a transmission rate when data is transmitted through the first transmission channel 530-1. .

According to various embodiments of the present invention, the specified condition may be a condition related to the quality of the first transport channel.

According to an embodiment, the specified condition may be a condition related to a value indicating the quality of the first transmission channel 530-1. For example, in the specified condition, a value indicating the quality of the first transport channel 530-1 is greater than or equal to a preset value (eg, the difference between RSRP-thresholdSSB-SUL or RSRP-thresholdSSB-SUL and a hysteresis value) (or greater than).

According to various embodiments of the present disclosure, the communication processor 610 transmits the first transmission channel 530-1 through the first transmission channel 530-1 based on whether the characteristic of the first transmission channel 530-1 satisfies a specified condition. A connection to the node 410 may be performed. In response to confirming that the characteristic of the first transmission channel 530-1 satisfies the specified condition, the communication processor 610 establishes a connection with the first node 410 through the first transmission channel 530-1. can

According to various embodiments of the present invention, the communication processor 610 attempts to access the first node 410 using a random access channel (RACH), and a first transport channel 530-1). data may be transmitted to the first node 410 through

According to various embodiments of the present disclosure, the communication processor 610 determines the data transmission state through the second transmission channel 520-1 based on the comparison result of the size of data to be transmitted and a preset value even if a specified condition is satisfied. can also keep When the size of the data to be transmitted is relatively small, it may be transmitted through the second transmission channel 520-1 without switching to the first transmission channel 530-1 that implements a relatively high data rate. The preset value may mean a value indicating the size of data capable of realizing a specific speed even when transmitted through the second transmission channel 520-1. The communication processor 610 may check the size of data temporarily stored in a buffer (not shown) included in the MAC implemented on the communication processor 610 . The communication processor 610 compares the size of the confirmed data with a preset value (eg, 107669 Bytes), and in response to confirming that the size of the checked data is equal to or greater than the preset value, the first transmission channel 530-1) data may be transmitted to the first node 410 through

7 is a diagram illustrating an embodiment in which an electronic device accesses one of a first transport channel and a second transport channel according to various embodiments of the present disclosure;

According to various embodiments of the present disclosure, in operation 710 , the electronic device (eg, the electronic device 600 of FIG. 6 ) communicates with the cellular network (eg, the first node 410 of FIG. 5 ) from the first node (eg, the first node 410 of FIG. 5 ). Information for accessing the cellular network 500 of FIG. 5 may be received.

According to various embodiments of the present disclosure, the information for accessing the cellular network 500 may include access information of the first node 410 and/or the second node (eg, the second node 420 of FIG. 5 ). can Information for accessing the cellular network 500 may be included in a system information block broadcast by the first node 410 .

According to various embodiments of the present disclosure, in operation 720, the electronic device 600 measures the quality of the channel provided by the first node 410 (eg, the first transmission channel 530-1 of FIG. 5). can

According to various embodiments of the present disclosure, in operation 730 , the electronic device 600 may determine whether the measured quality is equal to or greater than (or greater than) a preset value.

According to various embodiments of the present disclosure, the electronic device 600 provides the quality (eg, reference signal received power (RSRP)) of the channel (eg, the first transmission channel 530-1) provided by the first node 410 . ) and whether the value indicating the quality of the channel is greater than or equal to a preset value. The preset value may be included in a message (eg, RRC IE RACH-ConfigCommon) included in the system information block (eg, SIB 1), and the electronic device 600 checks the preset value based on the system information block and , it is possible to check whether the value indicating the quality of the channel is greater than or equal to a preset value.

According to various embodiments of the present disclosure, in operation 740 , the electronic device 600 attempts to access the first node 410 in response to confirming that the measured quality is equal to or greater than a preset value (operation 730-Y). can

According to various embodiments of the present disclosure, when the connection to the first node 410 is completed, the electronic device 600 uses a first transmission channel (eg, the first transmission channel 530-1 of FIG. 5 ). Data may be transmitted and data may be received through a first reception channel (eg, the first reception channel 530 - 2 of FIG. 5 ).

According to various embodiments of the present disclosure, in operation 750 , the electronic device 600 responds to confirming that the measured quality is less than (or less than) a preset value (operation 730 -N), the second node 420 . You can try to connect to

According to various embodiments of the present disclosure, when the connection to the second node 420 is completed, the electronic device 600 transmits data through the second transmission channel 520-1 and the first reception channel 530 -2) to receive data.

8 is a diagram illustrating an embodiment 800 in which an electronic device accesses a second transmission channel according to various embodiments of the present disclosure.

According to various embodiments of the present disclosure, in operation 810 , the electronic device (eg, the electronic device 600 of FIG. 6 ) performs a first transmission channel (RRC Connected state) with the first node 410 ( RRC Connected state). Example: The characteristic of the first transmission channel 530-1 of FIG. 5) can be checked.

According to various embodiments of the present invention, the characteristic of the first transmission channel 530-1 may be a characteristic related to the quality of the first transmission channel.

For example, the characteristic of the first transmission channel 530-1 may include a block error rate (BLER). As the block error rate increases, the quality of the first transmission channel may be low.

For another example, the characteristic of the first transport channel 530-1 is a message indicating that reception of data transmitted to the first node 410 through the first transport channel 530-1 fails (eg: It may include the number of times of reception of a radio link control (RLC) NACK message or a medium access control (MAC) NACK message). As the number of times of receiving the message indicating failure in data reception increases, the quality of the first transmission channel 530-1 may be low.

As another example, the characteristic of the first transmission channel 530-1 may include a value indicating the quality of the first transmission channel 530-1. For example, the characteristic of the first transmission channel 530-1 may be any one of reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to noise ratio (SNR). As the value of RSRP, RSRQ, or SNR increases, the quality of the first transport channel 530-1 may increase.

As another example, the characteristic of the first transmission channel 530-1 may include a power headroom of a signal to be transmitted through the first transmission channel 530-1. The power headroom may mean a difference between the maximum strength of a signal that the electronic device 600 can output and the signal strength required for the electronic device 600 to transmit a signal to the first node 410 . A reduction in power headroom may mean that a signal strength required for the electronic device 600 to transmit a signal to the first node 410 increases, and the electronic device 600 transmits a signal to the first node 410 ( An increase in the strength of a signal required for transmitting a signal to the 410 ) may mean that the quality of the first transmission channel 530-1 decreases.

According to various embodiments of the present disclosure, in operation 820 , the electronic device 600 may determine whether the characteristic of the first transmission channel 530-1 satisfies a specified condition.

According to various embodiments of the present disclosure, the specified condition may mean a condition for changing a transmission channel used for data transmission from the first transmission channel 530-1 to the second transmission channel 520-1. Satisfying the specified condition may mean that a transmission rate when data is transmitted through the first transmission channel 530-1 is lower than a transmission rate when data is transmitted through the second transmission channel 520-1. .

According to various embodiments of the present invention, the specified condition may be a condition related to the quality of the first transport channel.

According to an embodiment, the specified condition may include a condition related to a block error rate (BLER) of the first transmission channel 530-1. For example, the specified condition may include whether the block error rate of the first transmission channel 530-1 is greater than (or greater than) a specified value (eg, 20%).

According to an embodiment, the specified condition is a message indicating that reception of data transmitted to the first node 410 through the first transmission channel 530-1 fails (eg, a radio link control (RLC) NACK message). Alternatively, it may include a condition related to the number of times of reception of a medium access control (MAC) NACK message). For example, the specified condition may include whether the number of times of reception of a message indicating that data reception has failed is greater than (or greater than) a specified value (eg, half of the maximum number of retransmissions). The maximum number of retransmissions may be included in a message (eg, an RRC Reconfiguration message) transmitted during a connection operation between the first node 410 and the electronic device 600 .

According to an embodiment, the specified condition may be a condition related to a value indicating the quality of the first transmission channel 530-1. For example, in the specified condition, a value indicating the quality of the first transport channel 530-1 is less than or equal to a preset value (eg, the difference between RSRP-thresholdSSB-SUL or RSRP-thresholdSSB-SUL and a hysteresis value) (or less than) may include.

According to an embodiment, the specified condition may be a condition related to power headroom of a signal to be transmitted through the first transmission channel 530-1. For example, the specified condition may include whether the power headroom is less than (or less than) a preset value (eg, -5dB). The maximum intensity of a signal output by the electronic device 600 may change according to the remaining capacity of the battery of the electronic device 600 (eg, the battery 189 in FIG. 1 ) and the temperature of the electronic device 600 , In this case, the power headroom may be a value that varies depending on the state of the electronic device 600 . The electronic device 600 may determine a signal strength required for the electronic device 600 to transmit a signal to the first node 410 based on the quality measurement result of the first transmission channel 530-1. The electronic device 600 provides power based on a difference between the maximum strength of a signal that the electronic device 600 can output and the signal strength required for the electronic device 600 to transmit a signal to the first node 410 . You can calculate (or check) headroom.

According to various embodiments of the present disclosure, the specified condition may include at least one or more of the aforementioned conditions, and may be implemented as a combination of at least two or more of the aforementioned conditions.

According to various embodiments of the present disclosure, in response to confirming that the characteristic of the first transmission channel 530-1 does not satisfy the specified condition (operation 820-N), the electronic device 600 responds to the first transmission channel ( 530-1) may be checked (operation 810).

According to various embodiments of the present disclosure, in operation 830 , in response to confirming that the characteristic of the first transmission channel 530-1 satisfies the specified condition (operation 820-Y), the second node A connection may be attempted to 420 .

According to various embodiments of the present disclosure, the electronic device 600 attempts to access the second node 420 using a random access channel (RACH), and the second transmission channel 520-1 data may be transmitted to the second node 420 through

According to various embodiments of the present disclosure, the electronic device 600 connects with the second node 420 through the second transmission channel 520-1 while maintaining the connection with the first node 410 . can do. In this case, the electronic device 600 may receive data through the first reception channel 530 - 2 and may transmit data through the second transmission channel 520-1 .

According to various embodiments of the present invention, the second transport channel 520-1 may be a supplementary uplink (SUL), which is a channel introduced to extend the coverage of the first transport channel 510-1. In this case, the first transport channel 510-1 may be a normal uplink (NUL), which is a generally used channel.

9 is a diagram illustrating an embodiment 900 in which an electronic device sequentially attempts to access a first transport channel and a second transport channel according to various embodiments of the present disclosure.

According to various embodiments of the present disclosure, in operation 910 , the electronic device (eg, the electronic device 600 of FIG. 6 ) transmits information about a first transmission channel (eg, the first transmission channel 530-1 of FIG. 5 ). A state requiring random access (eg, a state in which a resource (eg, PUCCH) used for data transmission through the first transport channel 530-1 is released), a synchronization state (UL) of the first transport channel 530-1 In a state in which data transmission or reception occurs in a state in which synchronization status is non-synchronized or a state in which a scheduling request (SR) fails), the transmission of data through the first transmission channel 530-1 trigger can be detected.

According to various embodiments of the present disclosure, a state requiring random access to the first transmission channel 530-1 is a state in which the electronic device 600 and the first node 410 are connected (eg, an RRC connected state). , may be caused by various causes (eg, timing alignment timer expiration, a situation in which the number of scheduling requests exceeds the specified number of times (eg, SR max)). In a state in which random access to the first transmission channel 530-1 is required, the electronic device 600 detects a trigger of data transmission and uses the random access channel provided by the first node 410 for data transmission. So, random access can be attempted.

According to various embodiments of the present disclosure, in operation 920 , the electronic device 600 may measure the quality of the first transmission channel 530-1.

According to various embodiments of the present disclosure, in operation 930 , the electronic device 600 may attempt random access using the random access channel provided by the first node 410 .

According to various embodiments of the present disclosure, in operation 940 , the electronic device 600 may determine whether the random access to the first node 410 has been successful.

According to various embodiments of the present disclosure, in response to successful random access to the first node 410 (operation 940-Y), the electronic device 600 transmits data through the first transmission channel 530-1. can be transmitted

According to various embodiments of the present disclosure, in operation 950 , the electronic device 600 determines that the random access of the first node 410 has failed (operation 940-N), in response to the second node (eg: An attempt may be made to access the second node 420 of FIG. 4 .

According to various embodiments of the present disclosure, the electronic device 600 may fail the random access to the first node 410 due to various causes. In response to detecting the random access failure to the first node 410 , the electronic device 600 transmits a message indicating that the connection (or access) of the first node 410 fails to the first node 410 . Before transmission to , an attempt may be made to access the second node 420 through the second transmission channel 520-1. When the connection to the second node 420 through the second transmission channel 520-1 is successful, the electronic device 600 may transmit data through the second transmission channel 520-1.

According to various embodiments of the present disclosure, when the electronic device 600 fails to access the second node 420 through the second transmission channel 520-1, the electronic device 600 connects through the first transmission channel 530-1. (or, access) may transmit a message indicating failure to the first node 410 .

10 is a diagram illustrating an embodiment 1000 in which an electronic device accesses a first transmission channel according to various embodiments of the present disclosure.

According to various embodiments of the present disclosure, in operation 1010 , the electronic device (eg, the electronic device 600 of FIG. 6 ) uses a second transmission channel (eg, the second transmission channel 520-1 of FIG. 5 ). In a state of being connected to the second node (eg, the second node 420 of FIG. 5 ), the characteristic of the first transmission channel may be checked.

According to various embodiments of the present disclosure, the electronic device 600 transmits data through the second transmission channel 520-1 in a state in which the connection to the second node 420 is completed (RRC Connected state), Data may be received through one reception channel 530 - 2 . The electronic device 600 transmits data to the second node 420 through the second transmission channel 520-1, or receives data from the first node 410 through the first reception channel 530-2. In the meantime, the characteristics of the first transmission channel 530-1 may be checked. The electronic device 600 may check the characteristic of the first transmission channel 530-1 every preset period.

According to various embodiments of the present invention, the characteristic of the first transmission channel 530-1 may include a value indicating the quality of the first transmission channel 530-1. For example, the characteristic of the first transmission channel 530-1 may be any one of reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to noise ratio (SNR). As the value of RSRP, RSRQ, or SNR increases, the quality of the first transport channel 530-1 may increase.

According to various embodiments of the present disclosure, in operation 1020 , the electronic device 600 may determine whether the characteristic of the first transmission channel 530-1 satisfies a specified condition.

According to various embodiments of the present disclosure, the specified condition may mean a condition for changing a transmission channel used for data transmission from the second transmission channel 520-1 to the first transmission channel 530-1. Satisfying the specified condition may mean that a transmission rate when data is transmitted through the second transmission channel 520-1 is lower than a transmission rate when data is transmitted through the first transmission channel 530-1. .

According to various embodiments of the present invention, the specified condition may be a condition related to the quality of the first transport channel.

According to an embodiment, the specified condition may be a condition related to a value indicating the quality of the first transmission channel 530-1. For example, in the specified condition, a value indicating the quality of the first transport channel 530-1 is greater than or equal to a preset value (eg, the difference between RSRP-thresholdSSB-SUL or RSRP-thresholdSSB-SUL and a hysteresis value) (or greater than).

According to various embodiments of the present disclosure, in response to confirming that the characteristic of the first transmission channel 530-1 does not satisfy the specified condition (operation 1020-N), the electronic device 600 responds to the second transmission channel ( 520-1) to transmit data.

According to various embodiments of the present disclosure, in operation 1030 , in response to confirming that the characteristic of the first transmission channel 530-1 satisfies a specified condition (operation 1020-Y), the electronic device 600 transmits the first transmission Data transmission may be performed through the channel 530-1.

According to various embodiments of the present disclosure, the electronic device 600 performs the first transmission through the first transmission channel 530-1 based on whether the characteristic of the first transmission channel 530-1 satisfies a specified condition. A connection to the node 410 may be performed. In response to confirming that the characteristic of the first transmission channel 530-1 satisfies the specified condition, the electronic device 600 establishes a connection with the first node 410 through the first transmission channel 530-1. can

According to various embodiments of the present disclosure, the electronic device 600 attempts to access the first node 410 using a random access channel (RACH), and the first transmission channel 530-1 data may be transmitted to the first node 410 through

According to various embodiments of the present disclosure, even if a specified condition is satisfied, the electronic device 600 determines the data transmission state through the second transmission channel 520-1 based on a comparison result between the size of data to be transmitted and a preset value. you can also keep When the size of the data to be transmitted is relatively small, it may be transmitted through the second transmission channel 520-1 without switching to the first transmission channel 530-1 that implements a relatively high data rate. The preset value may mean a value indicating the size of data capable of realizing a specific speed even when transmitted through the second transmission channel 520-1. The electronic device 600 may check the size of data temporarily stored in a buffer (not shown) included in the MAC implemented on the communication processor 610 . The electronic device 600 compares the size of the checked data with a preset value (eg, 107669 Bytes) and responds to confirming that the size of the checked data is equal to or greater than the preset value, the first transmission channel 530-1 data may be transmitted to the first node 410 through

An electronic device according to various embodiments of the present disclosure includes a communication processor, wherein the communication processor operates to a first node through a first transmission channel (normal uplink) and a first reception channel (normal downlink) corresponding to a first frequency band. Receives information on a second node supporting a second transmission channel (supplementary uplink) corresponding to a second frequency band while performing a connection with a second frequency band, confirms a characteristic of the first transmission channel, and performs the first transmission In response to a channel characteristic satisfying a specified condition, it may be configured to connect with the second node through the second transport channel.

In the electronic device according to various embodiments of the present disclosure, the information on the second transport channel may be included in a system information block (SIB) broadcast by the first node.

In the electronic device according to various embodiments of the present disclosure, the specified condition includes a condition related to a block error rate (BLER) of the first transmission channel, and the communication processor determines that the characteristic of the first transmission channel is the first In response to satisfying a condition related to BLER of a transport channel, it may be configured to perform a connection with the second node through the second transport channel.

In the electronic device according to various embodiments of the present disclosure, the specified condition is

and a condition related to the number of times a message indicating failure to receive data transmitted to the first node through the first transmission channel is received, wherein the communication processor determines that a characteristic of the first transmission channel is the reception of the message. In response to satisfying a condition related to the number of times, it may be configured to establish a connection with the second node through the second transmission channel.

In the electronic device according to various embodiments of the present disclosure, the communication processor checks the characteristics of the channel based on the information indicating the quality of the channel, and confirms that the information indicating the quality of the channel satisfies a specified condition In response, it may be configured to perform a connection with the second node through the second transport channel.

In the electronic device according to various embodiments of the present disclosure, the communication processor checks the signal strength required for signal transmission through the first transmission channel, and in response to the signal strength satisfying the specified condition, It may be configured to perform a connection with the second node through a second transport channel.

In the electronic device according to various embodiments of the present disclosure, the communication processor sets a specified value based on the state information of the electronic device received from the application processor, and in response to confirming that the signal strength is greater than or equal to the specified value , to perform a connection with the second node through the second transport channel.

In the electronic device according to various embodiments of the present disclosure, the state information of the electronic device may include a temperature of the electronic device and/or a remaining battery capacity of the electronic device.

In the electronic device according to various embodiments of the present disclosure, in response to detecting data transmission in a state in which random access through the first transmission channel is required, the communication processor is the first node through the first transmission channel In response to a random access attempt to the first node and failure of the random access to the first node, before transmitting a message indicating that the connection through the first transmission channel fails to the first node, the second transmission It may be configured to attempt access to the second node through a channel.

In the electronic device according to various embodiments of the present disclosure, the communication processor may be configured to connect with the second node while maintaining the connection with the first node.

In the electronic device according to various embodiments of the present disclosure, the communication processor selects the first transmission channel in response to confirming that the characteristic of the first transmission channel satisfies a specified condition while being connected to the second node. It may be configured to attempt access to the first node through the

In the electronic device according to various embodiments of the present disclosure, the specified condition includes a condition related to a remaining capacity of a buffer implemented in the communication processor, and the communication processor responds that the remaining capacity of the buffer satisfies the specified condition Thus, it may be configured to perform a connection with the first node through the first transport channel.

In the electronic device according to various embodiments of the present disclosure, the first transport channel may be a normal uplink (NUL), and the second transport channel may be a supplementary uplink (SUL).

11 is an operation flowchart illustrating a method 1100 of operating an electronic device according to various embodiments of the present disclosure.

According to various embodiments of the present disclosure, in operation 1110, the electronic device (eg, the electronic device 600 of FIG. 6 ) performs a connection with a first node (eg, the first node 410 of FIG. 5 ), Information on the second node (eg, the second node 420 of FIG. 5 ) may be received.

According to various embodiments of the present disclosure, the electronic device 600 based on the access information of the first node 410 included in a system information block (SIB) broadcast by the first node 410 . An attempt may be made to access the first node 410 . The electronic device 600 may attempt to access the first node 410 using a random access channel (RACH) provided by the first node 410 . The system information block may include access information of the second node 420 .

According to various embodiments of the present disclosure, in operation 1120 , the electronic device 600 may check the characteristics of the first transmission channel (eg, the first transmission channel 530-1 of FIG. 5 ).

According to various embodiments of the present invention, the characteristic of the first transmission channel 530-1 may be a characteristic related to the quality of the first transmission channel.

For example, the characteristic of the first transmission channel 530-1 may include a block error rate (BLER). As the block error rate increases, the quality of the first transmission channel may be low.

For another example, the characteristic of the first transport channel 530-1 is a message indicating that reception of data transmitted to the first node 410 through the first transport channel 530-1 fails (eg: It may include the number of times of reception of a radio link control (RLC) NACK message or a medium access control (MAC) NACK message). As the number of times of receiving the message indicating failure in data reception increases, the quality of the first transmission channel 530-1 may be low.

As another example, the characteristic of the first transmission channel 530-1 may include a value indicating the quality of the first transmission channel 530-1. For example, the characteristic of the first transmission channel 530-1 may be any one of reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to noise ratio (SNR). As the value of RSRP, RSRQ, or SNR increases, the quality of the first transport channel 530-1 may increase.

As another example, the characteristic of the first transmission channel 530-1 may include a power headroom of a signal to be transmitted through the first transmission channel 530-1. The power headroom may mean a difference between the maximum strength of a signal that the electronic device 600 can output and the signal strength required for the electronic device 600 to transmit a signal to the first node 410 . A reduction in power headroom may mean that a signal strength required for the electronic device 600 to transmit a signal to the first node 410 increases, and the electronic device 600 transmits a signal to the first node 410 ( An increase in the strength of a signal required for transmitting a signal to the 410 ) may mean that the quality of the first transmission channel 530-1 decreases.

According to various embodiments of the present disclosure, the electronic device 600 may check whether the characteristic of the first transmission channel 530-1 satisfies a specified condition.

According to various embodiments of the present disclosure, the specified condition may mean a condition for changing a transmission channel used for data transmission from the first transmission channel 530-1 to the second transmission channel 520-1. Satisfying the specified condition may mean that a transmission rate when data is transmitted through the first transmission channel 530-1 is lower than a transmission rate when data is transmitted through the second transmission channel 520-1. .

According to various embodiments of the present invention, the specified condition may be a condition related to the quality of the first transport channel.

According to an embodiment, the specified condition may include a condition related to a block error rate (BLER) of the first transmission channel 530-1. For example, the specified condition may include whether the block error rate of the first transmission channel 530-1 is greater than (or greater than) a specified value (eg, 20%).

According to an embodiment, the specified condition is a message indicating that reception of data transmitted to the first node 410 through the first transmission channel 530-1 fails (eg, a radio link control (RLC) NACK message). Alternatively, it may include a condition related to the number of times of reception of a medium access control (MAC) NACK message). For example, the specified condition may include whether the number of times of reception of a message indicating that data reception has failed is greater than (or greater than) a specified value (eg, half of the maximum number of retransmissions). The maximum number of retransmissions may be included in a message (eg, an RRC Reconfiguration message) transmitted during a connection operation between the first node 410 and the electronic device 600 .

According to an embodiment, the specified condition may be a condition related to a value indicating the quality of the first transmission channel 530-1. For example, in the specified condition, a value indicating the quality of the first transport channel 530-1 is less than or equal to a preset value (eg, the difference between RSRP-thresholdSSB-SUL or RSRP-thresholdSSB-SUL and a hysteresis value) (or less than) may include.

According to an embodiment, the specified condition may be a condition related to power headroom of a signal to be transmitted through the first transmission channel 530-1. For example, the specified condition may include whether the power headroom is less than (or less than) a preset value (eg, -5dB). The maximum intensity of a signal output by the electronic device 600 may change according to the remaining capacity of the battery of the electronic device 600 (eg, the battery 189 in FIG. 1 ) and the temperature of the electronic device 600 , In this case, the power headroom may be a value that varies depending on the state of the electronic device 600 . The electronic device 600 may determine a signal strength required for the electronic device 600 to transmit a signal to the first node 410 based on the quality measurement result of the first transmission channel 530-1. The electronic device 600 provides power based on a difference between the maximum strength of a signal that the electronic device 600 can output and the signal strength required for the electronic device 600 to transmit a signal to the first node 410 . You can calculate (or check) headroom.

According to various embodiments of the present disclosure, the specified condition may include at least one or more of the aforementioned conditions, and may be implemented as a combination of at least two or more of the aforementioned conditions.

According to various embodiments of the present disclosure, in operation 1130 , the electronic device 600 determines whether the first transmission channel 530-1) satisfies a specified condition, based on whether the second transmission channel (eg, in FIG. 5 ) is satisfied. Connection to the second node 420 through the second transmission channel 520-1) may be performed.

According to various embodiments of the present disclosure, in response to confirming that the characteristic of the first transmission channel 530-1 satisfies a specified condition, the electronic device 600 transmits the second transmission channel 520-1 through the second transmission channel 520-1. A connection to the node 420 may be performed.

According to various embodiments of the present disclosure, the electronic device 600 attempts to access the second node 420 using a random access channel (RACH), and the second transmission channel 520-1 data may be transmitted to the second node 420 through

According to various embodiments of the present disclosure, the electronic device 600 connects with the second node 420 through the second transmission channel 520-1 while maintaining the connection with the first node 410 . can do. In this case, the electronic device 600 may receive data through the first reception channel 530 - 2 and may transmit data through the second transmission channel 520-1 .

In a method of operating an electronic device according to various embodiments of the present disclosure, while performing a connection with a first node through a first transmission channel (normal uplink) and a first reception channel (normal downlink) corresponding to a first frequency band, receiving information on a second node supporting a second transmission channel (supplementary uplink) corresponding to a second frequency band; checking a characteristic of the first transport channel; and performing a connection with the second node through the second transport channel in response to the characteristic of the first transport channel satisfying a specified condition.

In the method of operating an electronic device according to various embodiments of the present disclosure, the information on the second transport channel may be included in a system information block (SIB) broadcast by the first node.

In the method of operating an electronic device according to various embodiments of the present disclosure, the specified condition includes a condition related to a block error rate (BLER) of the first transmission channel, and the operation of connecting to the second node includes the and performing a connection with the second node through the second transport channel in response to the characteristic of the first transport channel satisfying a condition related to BLER of the first transport channel.

In the method of operating an electronic device according to various embodiments of the present disclosure, the specified condition includes a condition related to the number of times a message indicating failure to receive data transmitted to the first node through the first transmission channel is received. The operation of establishing a connection with the second node includes, in response to the characteristic of the first transport channel satisfying a condition related to the number of times the message is received, establishing a connection with the second node through the second transport channel. It may include an action to be performed.

In a method of operating an electronic device according to various embodiments of the present disclosure, the performing of the connection with the second node may include: checking a characteristic of the channel based on information indicating the quality of the channel; and performing a connection with the second node through the second transport channel in response to confirming that the information indicating the channel quality satisfies a specified condition.

In a method of operating an electronic device according to various embodiments of the present disclosure, the performing of the connection with the second node includes: checking the strength of a signal required for signal transmission through the first transmission channel; and performing a connection with the second node through the second transmission channel in response to the signal strength satisfying the specified condition.

In a method of operating an electronic device according to various embodiments of the present disclosure, the performing of the connection with the second node includes: setting a specified value based on state information of the electronic device received from an application processor; and in response to confirming that the signal strength is equal to or greater than the specified value, performing a connection with the second node through the second transmission channel.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is 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, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates 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 , B, or C" each may include any one of, or all possible combinations of, items listed together in the corresponding one of the phrases. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

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

According to various embodiments of the present document, one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101) may be implemented as software (eg, the program 140) including For example, a processor (eg, processor 120 ) of a device (eg, electronic device 101 ) may call at least one command among one or more commands stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium 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 include a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store™) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly between smartphones (eg: smartphones) and online. In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

Claims (20)

In an electronic device,
a communication processor;
The communication processor
While performing connection with the first node through a first transmission channel (normal uplink) and a first reception channel (normal downlink) corresponding to the first frequency band, a second transmission channel (supplementary uplink) corresponding to the second frequency band ) to receive information about a second node supporting
Check the characteristics of the first transport channel,
The electronic device is configured to connect with the second node through the second transport channel in response to a characteristic of the first transport channel satisfying a specified condition.
The method of claim 1,
The information on the second transport channel is
An electronic device included in a system information block (SIB) broadcast by the first node.
The method of claim 1,
The conditions specified above are
including a condition related to a block error rate (BLER) of the first transport channel;
The communication processor
The electronic device is configured to connect with the second node through the second transport channel in response to the characteristic of the first transport channel satisfying a condition related to BLER of the first transport channel.
The method of claim 1,
The conditions specified above are
and a condition related to the number of times a message indicating failure to receive data transmitted to the first node through the first transmission channel is received,
The communication processor
The electronic device is configured to establish a connection with the second node through the second transport channel in response to the characteristic of the first transport channel satisfying a condition related to the number of times the message is received.
The method of claim 1,
The communication processor
Check the characteristics of the channel based on the information indicating the quality of the channel,
The electronic device is configured to establish a connection with the second node through the second transmission channel in response to confirming that the information indicating the quality of the channel satisfies a specified condition.
The method of claim 1,
The communication processor
Checking the strength of a signal required for signal transmission through the first transmission channel,
The electronic device is configured to connect with the second node through the second transmission channel in response to the signal strength satisfying the specified condition.
The method of claim 1,
The communication processor
setting a specified value based on the state information of the electronic device received from the application processor;
The electronic device is configured to connect with the second node through the second transmission channel in response to confirming that the signal strength is equal to or greater than the specified value.
8. The method of claim 7,
The state information of the electronic device is
An electronic device including a temperature of the electronic device and/or a remaining battery capacity of the electronic device.
The method of claim 1,
The communication processor
In a state in which random access through the first transport channel is required, in response to detecting data transmission, a random access to the first node through the first transport channel is attempted,
In response to the failure of the random access to the first node, before transmitting a message indicating that the connection through the first transport channel fails to the first node, to the second node through the second transport channel An electronic device set up to attempt a connection.
The method of claim 1,
The communication processor
An electronic device configured to perform a connection with the second node while maintaining the connection with the first node.
The method of claim 1,
The communication processor
An electronic device configured to attempt access to the first node through the first transport channel in response to confirming that the characteristic of the first transport channel satisfies a specified condition while being connected to the second node.
12. The method of claim 11,
The conditions specified above are
including a condition related to the remaining capacity of the buffer implemented in the communication processor;
The communication processor
The electronic device is configured to connect with the first node through the first transmission channel in response to the remaining capacity of the buffer satisfying the specified condition.
The method of claim 1,
The first transport channel is a normal uplink (NUL) and the second transport channel is a supplementary uplink (SUL).
A method of operating an electronic device, comprising:
While performing connection with the first node through a first transmission channel (normal uplink) and a first reception channel (normal downlink) corresponding to the first frequency band, a second transmission channel (supplementary uplink) corresponding to the second frequency band ) receiving information about a second node supporting the operation;
checking a characteristic of the first transport channel; and
and performing a connection with the second node through the second transport channel in response to a characteristic of the first transport channel satisfying a specified condition.
15. The method of claim 14,
The information on the second transport channel is
An operating method of an electronic device included in a system information block (SIB) broadcast by the first node.
15. The method of claim 14,
The conditions specified above are
including a condition related to a block error rate (BLER) of the first transport channel;
The operation of performing a connection with the second node is
and performing a connection with the second node through the second transport channel in response to the characteristic of the first transport channel satisfying a condition related to BLER of the first transport channel.
15. The method of claim 14,
The conditions specified above are
and a condition related to the number of times a message indicating failure to receive data transmitted to the first node through the first transmission channel is received,
The operation of performing a connection with the second node is
and performing a connection with the second node through the second transmission channel in response to the characteristic of the first transmission channel satisfying a condition related to the number of times the message is received.
15. The method of claim 14,
The operation of performing a connection with the second node is
checking characteristics of the channel based on information indicating the quality of the channel; and
and performing a connection with the second node through the second transmission channel in response to confirming that the information indicating the channel quality satisfies a specified condition.
15. The method of claim 14,
The operation of performing the connection with the second node is
checking the strength of a signal required for signal transmission through the first transmission channel; and
and performing a connection with the second node through the second transmission channel in response to the signal strength satisfying the specified condition.
20. The method of claim 19,
The operation of performing the connection with the second node is
setting a specified value based on the state information of the electronic device received from the application processor; and
and performing a connection with the second node through the second transmission channel in response to confirming that the signal strength is equal to or greater than the specified value.

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