KR20200120456A - Electronic device for providing dual connectivy and method for operating thereof - Google Patents

Abstract

According to various embodiment of the present invention, an electronic device may comprise: a first communication processor for supporting first network communication with a first network, and a second communication processor for supporting second network communication with a second network different from the first network. When both the first and second network communications are set to a state in which data transmission is possible, the second communication processor is configured to transmit transmission data based on the second network communication selected as a main path among the first network communication and the second network communication if the size of the transmission data is less than the designated threshold size, and in response to detecting a failure in the second network communication, the first communication processor may be configured to transmit the transmission data based on the first network communication, irrespective of whether the size of the transmission data is equal to or greater than the designated threshold size. Other various embodiments are possible.

Description

Electronic device supporting dual connectivity and its operation method {ELECTRONIC DEVICE FOR PROVIDING DUAL CONNECTIVY AND METHOD FOR OPERATING THEREOF}

Various embodiments of the present disclosure relate to an electronic device supporting dual connectivity and a method of operating the same.

With the recent development of mobile communication technology, as the use of portable terminals having various functions has become common, efforts to develop a 5G communication system have been made to meet the increasing demand for wireless data traffic. In addition to the high frequency band used in 3G and LTE, the 5G communication system is also being considered for implementation in the ultra high frequency band in order to achieve a high data rate and to provide a faster data rate.

As a method of implementing 5G communication, a stand alone (SA) method and a non-stand alone (NSA) method are being considered. Among them, the NSA method may be a method of using a new radio (NR) system together with an existing LTE system. In the NSA scheme, the user terminal can use not only the eNB of the LTE system, but also the gNB of the NR system. A technology that enables a user terminal to enable heterogeneous communication systems may be referred to as dual connectivity.

Dual connectivity was initially proposed by 3GPP release-12, and at the time of the initial proposal, dual connectivity using the 3.5 GHz frequency band as a small cell in addition to the LTE system was proposed. It is under discussion that the 5G NSA scheme is implemented by using the dual connectivity proposed by 3GPP release-12, using the LTE system as a master node, and using the NR system as a secondary node.

As described above, an electronic device supporting dual connectivity may perform communication through heterogeneous communication networks. For example, the electronic device can use both the first network and the second network by setting a split bearer. In this case, the electronic device may set either the first network or the second network as an uplink primary path. The electronic device may receive information indicating a main path and information about an uplink split threshold. The electronic device may transmit transmission data to the base station through the main path. If the size of the transmission target data is greater than or equal to the uplink split threshold, the electronic device may also transmit the transmission target data through a secondary path other than the main path.

If a failure is detected in the network of the main path, the electronic device is set to be unable to transmit through the secondary path if the size of the transmission target data is less than the uplink split threshold. Accordingly, uplink data delay occurs. In the electronic device and its operation method according to various embodiments, when a failure in a network of a main path is detected while a split bearer is set, a bearer for data transmission is changed to a bearer set in a secondary path and transmitted. Target data can be transmitted.

In addition, even when a failure is detected in a network of a major path, there is no suggestion for a technology in which a user device can actively perform a change from a network in which the failure is detected to another network. According to various embodiments of the present disclosure, when a failure is detected in a network of a main path, an electronic device and a method of operating the same may set a measurement value of the corresponding network to a specified value and report it to an external electronic device.

According to various embodiments, the electronic device includes a first communication processor supporting a first network communication with a first network, and a second communication processor supporting a second network communication with a second network different from the first network. Including, wherein when both the first network communication and the second network communication are set to a state in which data transmission is possible, the second communication processor, when the size of the transmission data is less than a specified threshold size, the first network communication And set to transmit the transmission data based on the second network communication selected as a main path among the second network communication, and in response to detecting a failure in the second network communication, the first communication The processor may be configured to transmit the transmission data based on the first network communication, irrespective of whether the size of the transmission data is equal to or greater than the designated threshold size.

According to various embodiments, an electronic device including a first communication processor supporting a first network communication with a first network, and a second communication processor supporting a second network communication with a second network different from the first network. The operating method of the apparatus includes: when both the first network communication and the second network communication are set to a state in which data transmission is possible, when the size of the transmission data is less than a specified threshold size by the second communication processor, the second network communication In response to an operation of transmitting the transmission data and detecting a failure in the second network communication, based on the second network communication selected as a main path among 1 network communication and the second network communication, the Regardless of whether the size of the transmission data is greater than or equal to the designated threshold size, by the first communication processor, the transmission data may be transmitted based on the first network communication.

According to various embodiments, the electronic device includes a first communication processor supporting a first network communication with a first network, and a second communication processor supporting a second network communication with a second network different from the first network. Including, wherein when both the first network communication and the second network communication are set to a state in which data transmission is possible, the second communication processor, when the size of the transmission data is less than a specified threshold size, the first network communication And set to transmit the transmission data based on the second network communication selected as a main path among the second network communication, and in response to detecting a failure in the second network communication, the first communication The processor may be configured to transmit a report signal in which at least one parameter indicating the strength of the signal of the second network communication measured by the electronic device is set to a minimum value, to a first node corresponding to the first network communication. have.

According to various embodiments, an electronic device capable of transmitting data to be transmitted by changing a bearer for data transmission to a bearer set in a secondary path when a failure in a network of a main path is detected while a split bearer is set, and its operation A method can be provided. Accordingly, data can be transmitted through a network corresponding to the secondary path without delaying uplink data.

According to various embodiments, when a failure is detected in a network of a main path, an electronic device capable of setting a measurement value of a corresponding network to a specified value and reporting a report to an external electronic device, and an operation method thereof may be provided. Accordingly, it is possible to induce that the network in which the failure is detected is no longer used, or that the SN according to the dual connectivity setting is not added (eg, Secondary-Node addition) in the future.

1 is a block diagram of an electronic device in a network environment, according to various embodiments.
2A is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments.
2B is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments.
3A is a diagram illustrating wireless communication systems providing a network of legacy communication and/or 5G communication according to various embodiments.
3B is a diagram illustrating wireless communication systems providing a network of legacy communication and/or 5G communication according to various embodiments.
3C is a diagram illustrating wireless communication systems providing a network of legacy communication and/or 5G communication according to various embodiments.
4 is a diagram illustrating a bearer in a UE according to various embodiments.
5A is a diagram illustrating an uplink path between a UE and a BS according to various embodiments.
5B is a diagram illustrating a path between a UE and a BS when a split bearer is configured in EN-DC according to various embodiments.
6A is a flowchart illustrating a method of operating an electronic device according to various embodiments.
6B is a flowchart illustrating a method of operating an electronic device according to various embodiments.
7A is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.
7B is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.
8 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.
9A is a diagram showing a radio protocol structure in an LTE system.
9B is a diagram illustrating a radio protocol structure of a next-generation mobile communication system according to various embodiments.
9C is a diagram for explaining data change between network layers.
9D is a diagram illustrating a reverse operation according to various embodiments.
10 is a flowchart illustrating a method of operating an electronic device according to various embodiments.
11 is a flowchart illustrating a method of operating a user terminal, an MN, and an SN according to various embodiments.
12A is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.
12B is a flowchart illustrating a method of operating an electronic device according to various embodiments.
13 is a flowchart illustrating operations of a UE, an MCG, and an SCG according to various embodiments.
14 is a 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, the electronic device 101 communicates with the electronic device 102 through a first network 198 (for example, a short-range wireless communication network), or a second network 199 It is possible to communicate with the electronic device 104 or the server 108 through (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 device 150, an audio output device 155, a display device 160, an audio module 170, and a sensor module ( 176, interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197 ) Can be included. In some embodiments, at least one of these components (eg, the display device 160 or the camera module 180) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components may be implemented as one integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 160 (eg, a display).

The processor 120, for example, executes software (eg, a program 140) to implement at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and can perform various data processing or operations. According to an embodiment, as at least part of data processing or operation, the processor 120 may store commands or data received from other components (eg, the sensor module 176 or the communication module 190) to the volatile memory 132. The command or data stored in the volatile memory 132 may be processed, and result data may be stored in the nonvolatile memory 134. According to an embodiment, the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and a secondary processor 123 (eg, a graphic processing unit, an image signal processor) that can be operated independently or together , A sensor hub processor, or a communication processor). Additionally or alternatively, the coprocessor 123 may be set to use less power than the main processor 121 or to be specialized for a designated function. The secondary processor 123 may be implemented separately from the main processor 121 or as a part thereof.

The coprocessor 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, an application is executed). ) While in the state, together with the main processor 121, at least one of the components of the electronic device 101 (for example, the display device 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the functions or states related to. According to an embodiment, the coprocessor 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). have.

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, software (eg, the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a nonvolatile 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 device 150 may receive a command or data to be used for a component of the electronic device 101 (eg, the processor 120) from an outside (eg, a user) of the electronic device 101. The input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).

The sound output device 155 may output an sound signal to the outside of the electronic device 101. The sound output device 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, and the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

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

The audio module 170 may convert sound into an electric signal or, conversely, convert an electric signal into sound. According to an embodiment, the audio module 170 acquires sound through the input device 150, the sound output device 155, or an external electronic device (for example, an external electronic device directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102) (for example, 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, a user state), and generates an electrical signal or data value corresponding to the detected state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric 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 for the electronic device 101 to connect directly or wirelessly 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 a user can perceive through a tactile or motor 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 a still image and a video. 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 388 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 an embodiment, the 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, electronic device 102, electronic device 104, or server 108). It is possible to support establishment and communication through the established communication channel. The communication module 190 operates independently of the processor 120 (eg, an application processor), and may include one or more communication processors that support direct (eg, wired) communication or wireless communication. According to an 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 : A LAN (local area network) communication module, or a power line communication module) may be included. Among these communication modules, a corresponding communication module is a first network 198 (for example, a short-range communication network such as Bluetooth, WiFi direct or IrDA (infrared data association)) or a second network 199 (for example, a cellular network, the Internet, or It can communicate with external electronic devices through a computer network (for example, a telecommunication network such as a LAN or 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 separate components (eg, multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 in a communication network such as the first network 198 or the second network 199. The electronic device 101 can be checked and authenticated.

The antenna module 197 may transmit a signal or power to the outside (eg, an external electronic device) or receive from the outside. According to an embodiment, the antenna module may include one 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. 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, for example, provided by the communication module 190 from the plurality of antennas. Can be chosen. The signal or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, other components (eg, RFIC) other than the radiator may be additionally formed as part of the antenna module 197.

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

According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the electronic devices 102 and 104 may be a device of the same or different type as the electronic device 101. According to an embodiment, all or part of the operations executed by the electronic device 101 may be executed by one or more of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device 101 does not execute the function or service by itself. In addition or in addition, it is possible to request one or more external electronic devices to perform the function or at least part of the service. One or more external electronic devices receiving 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 the execution result 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. To this end, for example, cloud computing, distributed computing, or client-server computing technology may be used.

2A is a block diagram 200 of an electronic device 101 for supporting legacy network communication and 5G network communication, according to various embodiments. 2A, 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 of the components illustrated in FIG. 1, and the network 199 may further include at least one other network. According to an embodiment, the first communication processor 212, the second communication processor 214, the first RFIC 222, the second RFIC 224, the fourth RFIC 228, the 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 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 communication of a legacy network 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 communicates with the 5G network 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 corresponds to another designated band (eg, about 6 GHz or less) among the bands to be used for wireless communication with the second network 294. It is possible to establish a communication channel and support 5G network communication through the established communication channel.

The first communication processor 212 may transmit and receive data with the second communication processor 214. For example, data that has been classified as being transmitted through the second cellular network 294 may be changed to be transmitted through the first cellular network 292. In this case, the first communication processor 212 may receive transmission data from the second communication processor 214.

For example, the first communication processor 212 may transmit and receive data through the second communication processor 214 and the interprocessor interface 213. The interprocessor interface 213 may be implemented as, for example, a universal asynchronous receiver/transmitter (UART) (eg, high speed-UART (HS-UART) or a peripheral component interconnect bus express (PCIe)) interface, but the type Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using, for example, a shared memory. The communication processor 212 may transmit and receive various types of information, such as sensing information, information on output strength, and resource block (RB) allocation information, with the second communication processor 214.

Depending on the implementation, the first communication processor 212 may not be directly connected to the second communication processor 214. In this case, the first communication processor 212 may transmit and receive data through the second communication processor 214 and the processor 120 (eg, an application processor). For example, the first communication processor 212 and the second communication processor 214 may transmit and receive data through the processor 120 (eg, an application processor) and an HS-UART interface or a PCIe interface. There are no restrictions on types. Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using the processor 120 (eg, an application processor) and a shared memory. .

According to an 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 auxiliary processor 123, or the communication module 190. have. For example, as shown in FIG. 2B, the unified communication processor 260 may support both functions for communication with a first cellular network and a second cellular network.

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

The second RFIC 224 transmits a baseband signal generated by the first communication processor 212 or the second communication processor 214 to be used in the second network 294 (for example, a 5G network). It can convert into an RF signal (hereinafter, referred to as 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) through an antenna (eg, the second antenna module 244), and RFFE (eg, the second RFFE 234). Can be pretreated through. The second RFIC 224 may convert the preprocessed 5G Sub6 RF signal into a baseband signal so that it can 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, 5G Above6 RF signal). Upon reception, the 5G Above6 RF signal may be obtained from the second network 294 (eg, 5G network) through an antenna (eg, antenna 248) and preprocessed through the 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 a fourth RFIC 228 separately or at least as 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 transferred to the third RFIC 226. The third RFIC 226 may convert the IF signal into a 5G Above6 RF signal. Upon reception, the 5G Above6 RF signal may be received from the second network 294 (eg, 5G network) through an antenna (eg, antenna 248) and converted into an IF signal by the third RFIC 226. . The fourth RFIC 228 may convert the IF signal into a baseband signal so that the second communication processor 214 can process it.

According to an example, the first RFIC 222 and the second RFIC 224 may be implemented as a single chip or at least part of a single package. According to an embodiment, the first RFFE 232 and the second RFFE 234 may be implemented as a single chip or at least part of a single package. According to an example, at least one of the first antenna module 242 and the second antenna module 244 may be omitted or 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 a first substrate (eg, a main PCB). In this case, the third RFIC 226 is located in a partial area (eg, lower surface) of the second substrate (eg, sub PCB) separate from the first substrate, and the antenna 248 is disposed in another area (eg, upper surface). Is disposed, a third antenna module 246 may be formed. By arranging 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 can reduce loss (eg, attenuation) of a signal in a high-frequency band (eg, about 6 GHz to about 60 GHz) used for communication in a 5G network, for example. Accordingly, the electronic device 101 may improve the quality or speed of communication with the second network 294 (eg, a 5G network).

According to one 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, a plurality of phase shifters 238 corresponding to a plurality of antenna elements as part of the third RFFE 236. During transmission, each of the plurality of phase converters 238 may convert the phase of the 5G Above6 RF signal to be transmitted to the outside of the electronic device 101 (eg, the base station of the 5G network) through a corresponding antenna element. . Upon reception, each of the plurality of phase converters 238 may convert the phase of the 5G Above6 RF signal received from the outside into the same or substantially the same phase through a corresponding antenna element. This enables transmission or reception through beamforming between the electronic device 101 and the outside.

The second network 294 (e.g., 5G network) can be operated independently from the first network 292 (e.g., a legacy network) (e.g., Stand-Alone (SA)), or can be connected and operated (e.g.: Non-Stand Alone (NSA)). For example, a 5G network may have only an access network (eg, 5G radio access network (RAN) or next generation RAN (NG RAN)) and no core network (eg, 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 the core network (eg, evolved packed core (EPC)) of the legacy network. Protocol information (eg, LTE protocol information) for communication with a legacy network or protocol information (eg, New Radio (NR) protocol information) for communication with a 5G network is stored in the memory 230 and other components (eg, processor information) 120, the first communication processor 212, or the second communication processor 214.

3A to 3C are diagrams illustrating wireless communication systems providing a network of legacy communication and/or 5G communication according to various embodiments. 3A to 3C, the network environment 300a to 300c may include at least one of a legacy network and a 5G network. The legacy network includes, for example, a 4G or LTE base station 340 (e.g., eNB (eNodeB)) of a 3GPP standard supporting wireless access with the electronic device 101 and an evolved packet (EPC) that manages 4G communication. core) 342 may be included. The 5G network, for example, manages 5G communication between the electronic device 101 and the New Radio (NR) base station 350 (eg, gNB (gNodeB)) and the electronic device 101 supporting wireless access. A 5th generation core (5GC) 352 may be included.

According to various embodiments, the electronic device 101 may transmit and receive a control message and user data through legacy communication and/or 5G 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 It may include. The user data may mean, for example, user data excluding a control message transmitted and received between the electronic device 101 and the core network 330 (eg, the EPC 342).

Referring to FIG. 3A, the electronic device 101 according to an embodiment uses at least a portion of a legacy network (eg, LTE base station 340, EPC 342) to at least a portion of a 5G network (eg: At least one of a control message or user data may be transmitted and received with the NR base station 350 and the 5GC 352.

According to various embodiments, the network environment 300a provides wireless communication dual connectivity (DC) to the LTE base station 340 and the NR base station 350, and one of the EPC 342 or 5GC 352 A network environment for transmitting and receiving control messages with the electronic device 101 through the core network 230 of may be included.

According to various embodiments, in a DC environment, one of the LTE base stations 340 or NR base stations 350 operates as a master node (MN) 310 and the other operates as a secondary node (SN) 320 can do. The MN 310 is connected to the core network 230 to transmit and receive control messages. The MN 310 and the SN 320 may be connected through a network interface to transmit and receive messages related to radio resource (eg, communication channel) management.

According to various embodiments, the MN 310 may be configured with an LTE base station 340, the SN 320 may be configured with an NR base station 350, and the core network 330 may be configured with an EPC 342. For example, a control message may be transmitted and received through the LTE base station 340 and the EPC 342, and user data may be transmitted and received through at least one of the LTE base station 340 and the NR base station 350.

According to various embodiments, the MN 310 may be configured with an NR base station 350, the SN 320 may be configured with an LTE base station 340, and the core network 330 may be configured with a 5GC 352. For example, a control message may be transmitted and received through the NR base station 350 and the 5GC 352, and user data may be transmitted and received through at least one of the LTE base station 340 and the NR base station 350.

Referring to FIG. 3B, according to various embodiments, a 5G network may include an NR base station 350 and a 5GC 352, and may independently transmit and receive control messages and user data with the electronic device 101.

Referring to FIG. 3C, a legacy network and a 5G network according to various embodiments may independently provide data transmission/reception. For example, the electronic device 101 and the EPC 342 may transmit and receive control messages and user data through the LTE base station 340. As another example, the electronic device 101 and the 5GC 352 may transmit and receive a control message and user data through the NR base station 350.

According to various embodiments, the electronic device 101 may be registered with at least one of the EPC 342 and the 5GC 352 to transmit and receive a control message.

According to various embodiments, the EPC 342 or the 5GC 352 may interwork to manage communication of the electronic device 101. For example, movement information of the electronic device 101 may be transmitted and received through an interface between the EPC 342 and the 5GC 352.

As described above, dual connectivity through the LTE base station 340 and the NR base station 350 may be referred to as E-UTRA new radio dual connectivity (EN-DC).

4 is a diagram illustrating a bearer in a UE according to various embodiments.

Bearers available in a 5G non-standalone network environment (e.g., the network environment 300a of FIG. 3A) include a master cell group (MCG) bearer, a secondary cell group (SCG) bearer, and a split bearer. can do. In the user equipment (UE) 400, an E-UTRA/NR packet data convergence protocol (PDCP) entity 401 and NR PDCP entities 402 and 403 may be configured. In the UE 400, E-UTRA radio link control (RLC) entities 411 and 412 and NR RLC entities 413 and 414 may be configured. In the UE 400, an E-UTRA MAC entity 421 and an NR MAC entity 422 may be configured. The UE may represent a user device capable of performing communication with a base station, and may be used interchangeably with the electronic device 101 of FIG. 1. For example, in various embodiments of the present disclosure, when the UE performs a specific operation, it may mean that at least one element included in the electronic device 101 performs a specific operation.

The MCG may correspond to, for example, a main node (MN) of FIGS. 3A to 3C, and the SCG may correspond to a secondary node (SN) of FIGS. 3A to 3C, for example. When a node for performing communication is determined, the UE 400 may set various entities shown in FIG. 4 to communicate with the determined node (eg, a base station). The entities 401, 402, and 403 of the PDCP layer receive data (e.g., PDCP SDU corresponding to an IP packet) and convert converted data (e.g., PDCP protocol data unit (PDU)) reflecting additional information (e.g. Can be printed. The RLC layer entities (411,412,413,414) receive the converted data (eg PDCP PDU) output from the PDCP layer entities (401,402,403), and the converted data reflecting additional information (eg header information) (eg RLC PDU) can be output. The MAC layer entities 421,422 receive the converted data (e.g., RLC PDU) output from the RLC layer entities 411,412,413,414, and the converted data reflecting additional information (e.g. header information) (e.g. MAC PDU) can be output and delivered to a physical layer (not shown). Various embodiments of the process of converting information between entities will be described in more detail with reference to FIGS. 9A to 9D.

The MCG bearer may be associated with a path (or data) through which data can be transmitted/received using only a resource or entity corresponding to the MN in dual connectivity. The SCG bearer may be associated with a path (or data) through which data can be transmitted and received using only a resource or entity corresponding to the SN in dual connectivity. The split bearer may be associated with a resource or entity corresponding to the MN and a path (or data) through which data can be transmitted/received using the resource or entity corresponding to the SN in dual connectivity. Accordingly, as shown in FIG. 4, the split bearer is, through the NR PDCD entity 402, the E-UTRA RLC entity 412 and the NR RLC entity 413, and the E-UTRA MAC entity 421 ) And the NR MAC entity 422.

5A is a diagram illustrating an uplink path between a UE and base stations according to various embodiments.

The UE 510 (eg, the electronic device 101) according to various embodiments may perform communication with the base stations 520a and 520b based on the split bearer in FIG. 5A. Accordingly, transmission data (eg, IP packets) to be transmitted from the UE 510 to the base stations 520a and 520b are transmitted through the second PDCP entity 511 to the second RLC entity 513 and the second MAC entity ( 515) or the first RLC entity 512 and the first MAC entity 514. For example, the first RLC entity 512 and the first MAC entity 514 may be associated with a first network, and the second RLC entity 513 and the second MAC entity 515 are associated with a second network. Can be. The first BS 520a may configure a first PDCP entity 521a, a first RLC entity 522a, and a first MAC entity 523a. The second BS 520b may configure a second PDCP entity 521b, a second RLC entity 522b, and a second MAC entity 523b. A path associated with the second RCL entity 513 and the second MAC entity 515 of the UE 510 may be a primary path 531, and the first RLC entity 512 and the first MAC entity A path associated with 514 may be a secondary path 532. Here, the first PDCP entity 521a may be implemented in the same manner as the second PDCP entity 521b. For example, for the implementation of EN-DC, when the BS 520a is an LTE BS, the first PDCP entity 521a may be set as an NR PDCP entity. In various embodiments, a specific PDCP entity (eg, NR PDCP entity) may be in BS 520a, or may be in BS 520b. When a split bearer is configured, at least one of the first PDCP entity 521a or the second PDCP entity 521b may transmit data to the core network. In various embodiments, either the first PDCP entity 521a or the second PDCP entity 521b may not exist. BS 520a and BS 520b may perform direct communication with each other.

The first network and the second network are not limited as long as they are networks capable of dual connectivity. For example, each of the first network and the second network may correspond to LTE communication and NR communication, respectively. For example, the first network and the second network are all related to LTE communication, and the second network may be a network corresponding to a small-cell of a specific frequency. For example, the first network and the second network are both related to 5G, the first network corresponds to a frequency band less than 6 GHz (eg, below 6), and the second network is a frequency band of 6 GHz or higher (eg, over 6). You can also respond to.

The UE 510 according to various embodiments may transmit transmission data using the BSs 520a and 520b and at least one of a first network and a second network based on a split bearer. The UE 510 according to various embodiments sets the second network associated with the second BS 520b corresponding to the SCG as a primary path 531, and the first BS 520a corresponding to the MCG. The first network associated with the network may be set as a secondary path 532. For example, the UE 510 may set the second network associated with the SCG as the main route 531 based on information indicating the main route received from the MN. Information indicating the main path received from the MN may be included in an RRC signal (eg, RRCReconfiguration) and received. In another embodiment, there is no limitation on the manner in which the UE 510 configures the main path. The main path may be determined, for example, based on a policy of each communication service provider, and the UE 510 may check the main path by receiving information indicating the main path. The primary path may indicate a cell group ID and LCID of a primary RLC entity for uplink data transmission when a PDCP entity is associated with more than one RLC entity. The second PDCP entity 521b may be included in the base station 520a having a primary path. According to various embodiments, the first PDCP entity 521a may be included in the base station 520b having a secondary path.

In various embodiments, the UE 510 may check information on an up link split threshold. The UE 510 may receive and confirm information on the uplink split threshold from the MN. The information on the uplink split threshold may be included in a UE-specific or UE-dedicated RRC signal (eg, RRCReconfiguration). According to various embodiments, there is no limitation on a manner in which the UE 510 checks information on an uplink split threshold.

Table 1 below is a format of an RRCReconfiguration message according to various embodiments.

RRCReconfiguration-IEs ::= SEQUENCE {
radioBearerConfig RadioBearerConfig OPTIONAL, - Need M OPTIONAL, - Need M




RadioBearerConfig ::= SEQUENCE {
...
drb-ToAddModList DRB-ToAddModList OPTIONAL, - Need N
...
}

DRB-ToAddModList ::= SEQUENCE (SIZE (1..maxDRB)) OF DRB-ToAddMod
DRB-ToAddMod ::= SEQUENCE {
...
pdcp-Config PDCP-Config OPTIONAL, - Cond PDCP
...
}

PDCP-Config ::= SEQUENCE {
drb SEQUENCE {
...
moreThanOneRLC SEQUENCE {
primaryPath SEQUENCE {
cellGroup CellGroupId OPTIONAL, - Need R
logicalChannel LogicalChannelIdentity OPTIONAL - Need R
},
ul-DataSplitThreshold UL-DataSplitThreshold OPTIONAL, - Cond SplitBearer
pdcp-Duplication ENUMERATED {true} OPTIONAL - Need R
}

As indicated by the underline above, in the RRCReconfiguration message, ul-datasplitthreshold may be defined as an uplink split threshold.

Information on the uplink split threshold may also be determined, for example, based on a policy of each communication service provider. The UE 510 has two or more RLC entities (eg, a first RLC entity 512 and a second RLC entity 513) in which a transmitting PDCP entity (eg, a second PDCP entity 511) is It can be seen that two or more related RLC entities (eg, the first RLC entity 512 and the second RLC entity 513) belong to different cell groups. In this case, the UE 510 may check whether the total amount of the PDCP data volume and the RLC data volume is greater than or equal to the uplink split threshold. When the total amount of the PDCP data volume and the RLC data volume is greater than or equal to the uplink split threshold, the transmitting PDCP entity of the UE 510 (for example, the second PDCP entity 511) may convert the PDCP PDU into the main RLC entity ( Primary RLC entity) or a secondary RLC entity (submit). When the total amount of the PDCP data volume and the RLC data volume is less than the uplink split threshold, the transmitting PDCP entity of the UE 510 (eg, the second PDCP entity 511) will provide the PDCP PDU only to the main RPL entity. Can be. As described above, the UE 510 may transmit data through the main path 531 and the secondary path 532 when the size of the data to be transmitted is greater than or equal to the threshold. When the size of the data to be transmitted is less than the threshold, the UE 510 may transmit data only through the main path 531.

The UE 510 according to various embodiments may confirm that a failure has occurred in the SCG, which is the main path 531. For example, when the number of RLC retransmissions associated with the SCG exceeds the threshold number, the UE 510 may confirm that a failure (eg, SCG RLC failure) has occurred in the SCG. Alternatively, the UE 510 may check the SCG failure based on receiving the indication indicating the SCG failure. On the other hand, it will be understood by those skilled in the art that there is no limit to the type of event set to confirm that the UE 510 has failed in the SCG. For example, in the EN-DC scheme, if there is a transmission power (Tx power) constraint, the UE can generally allocate the LTE side power first, and even if the SCG electric field is relatively good, the uplink SCG fails Can occur. In particular, the stability of the SCG side is lower than that of the MCG side, and the issue of reconfiguration failure may also be highly likely to occur in the SCG.

When a failure occurs in the SCG, which is the main path 531, data transmission from the UE 510 to the base stations belonging to the SCG may also fail. Even though the split bearer is established, if the split bearer is maintained continuously, the UE 510 may not be able to transmit data to the secondary path 532 associated with the MCG. As described above, the transmitting PDCP entity (eg, the second PDCP entity 511) of the UE 510 is two or more RLC entities (eg, the first RLC entity 512 and the first RLC entity) included in each different cell group. 2 In the case of the RLC entity 513), data can be transmitted to the secondary path 532 associated with the MCG only when the data size in the buffer is equal to or greater than the threshold. Accordingly, according to the data size in the buffer, when a split bearer is maintained, for example, a PDCP entity (eg, the second PDCP entity 511) has two or more different RLC entities (eg, a first RLC entity ( 512) and the second RLC entity 513), data transmission may be stopped. Alternatively, a threshold (eg, an uplink-split threshold) may be set to infinite, and in this case, data transmission to the secondary path 532 associated with the SCG may not be possible as long as the split bearer is maintained.

In addition, even when the UE 510 transmits an SCG failure report (SCG failure report or SCG failure information) to the BS 520b, the BS 520b may not provide the function of changing the bearer configuration to the MCG. . In this case, even if the SCG failure report is delivered, data transmission to the secondary path 532 associated with the SCG may not be guaranteed. According to the various reasons described above, transmission data delay may occur, and there is a possibility that TCP transmission failure may occur.

The UE 510 according to various embodiments may change the uplink path from the path corresponding to the SCG as the main path 531 to the path corresponding to the MCG as the secondary path 532, and accordingly, the path corresponding to the MCG. The data may be transmitted to the BS 520a through. For example, at least one communication processor of the electronic device 101 (eg, at least one of the first communication processor 212 or the second communication processor 214, or the unified communication processor 260) is a transmitting PDCP entity By associating with one RLC entity (eg, an E-UTRA RLC entity), data may be transmitted to the BS 520 through a path associated with the SCG.

5B is a diagram illustrating a path between a UE and a BS when a split bearer is configured in EN-DC according to various embodiments.

The UE 510 according to various embodiments may set a split bearer in EN-DC, and accordingly, the NR PDCP entity 541 may be associated with the LTE RLC entity 542 and the NR RLC entity 543 have. The LTE RLC entity 542 may be associated with the LTE MAC entity 544 and the NR RLC entity 543 may be associated with the NR MAC entity 545. The NR MAC entity 553b of the BS 550b may correspond to the NR MAC entity 545, and the LTE MAC entity 553a of the BS 550a may correspond to the LTE MAC entity 544. The NR PDCP entity 551a of the BS 550a may be associated with the LTE RLC entity 552a, and the NR PDCP entity 551b of the BS 550b may be associated with the NR RLC entity 552b. The LTE RLC entity 522a may be associated with the LTE MAC entity 553a, and the NR RLC entity 552b may be associated with the NR MAC entity 553b. The NR network may be set as the primary path 531 and the LTE network may be set as the secondary path 532. In EN-DC, in the case of the LTE BS 550a, it has been suggested in the standard that the NR PDCP entity 551a is set. In particular, for a split bearer, the LTE BS 550a may have to be configured as an NR PDCP entity 551a. The NR PDCP entity may be in the BS 550a of LTE, or may be in the NR BS 550b. In the case of a split bearer, at least one of the NR PDCP entity 551a of the LTE BS 550a or the NR PDCP entity 551b of the NR BS 550b may transmit data to the core network. Effectively, it may be advantageous to have the NR PDCP entity 551b set up in the primary path 531. However, it may also be possible for the NR PDCP entity 551a to be set in the LTE BS 550a, and for this reason, the NR PDCP entity 551a is indicated by a dotted line. In addition, LTE BS (550a) and NR BS (550b) can directly transmit and receive data with each other. Meanwhile, as described above, in addition to the EN-DC as shown in FIG. 5B, various embodiments of the present disclosure may be applied by various DCs.

6A is a flowchart illustrating a method of operating an electronic device according to various embodiments.

According to various embodiments, in operation 601, the electronic device 101 (eg, at least one communication processor) may set a split bearer and may set an uplink path through the SCG as a primary path. For example, although the second communication processor 214 may set the split bearer, there is no limitation on the subject of setting the split bearer. The operation of configuring a split bearer may mean an operation of associating a transmitting PDCP entity with a plurality of RLC entities each included in a different cell group.

According to various embodiments, in operation 603, the electronic device 101 may provide transmission data to a lower layer associated with the SCG. The electronic device 101 may transmit data through a path associated with the SCG set as the main path. For example, in EN-DC, a transmitting PDCP entity (eg, NR PDCP 541 in FIG. 5B), transmits data to an RLC entity (eg, NR RLC entity 543 in FIG. 5B), and SCG. It may be provided to an associated MAC entity (eg, NR MAC entity 545).

According to various embodiments, in operation 605, the electronic device 101 may detect whether an SCG failure has occurred. For example, the electronic device 101 may detect whether an SCG failure has occurred based on detection of a preset SCG failure event. If the SCG failure is not detected (605-No), the electronic device 101 may transmit data through a path associated with the SCG set as the main path.

According to various embodiments, when an SCG failure is detected (605-Yes), in operation 607, the electronic device 101 Data can be transmitted through a path set as a secondary path (eg, a path through an MCG). For example, the electronic device 101 may transmit data to an MCG radio bearer. For example, the first communication processor 212 may be set to transmit data to a bearer set as a secondary path, but there is no limitation on the subject performing this setting. For example, in EN-DC, the electronic device 101 may associate a transmitting PDCP entity (eg, NR PDCP 541) with an RLC entity (eg, LTE RLC entity 542) associated with an MCG. According to various embodiments, in operation 609, the electronic device 101 may provide transmission data to a lower layer associated with a secondary path. For example, the transmitting PDCP entity may provide transmission data to an RLC entity (eg, an LTE RLC entity) associated with an MCG and a MAC entity (eg, an LTE MAC entity) associated with an MCG. Even if the electronic device 101 sets the path associated with the SCG as the main path, when an SCG failure is detected, the electronic device 101 may transmit transmission data through the path associated with the MCG set as the secondary path. Accordingly, even when the data in the buffer is less than the threshold, the electronic device 101 may transmit transmission data through a path associated with the MCG, so that data congestion may not occur.

In various embodiments, the electronic device 101 may check whether a path associated with the SCG has been recovered. The electronic device 101 may check the indication associated with SCG recovery in the PHY layer or the MAC layer, and in this case, may resume packet routing again based on the SCG bearer or the split bearer.

6B is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure. The embodiment of FIG. 6B will be described in more detail with reference to FIG. 2A.

According to various embodiments, in operation 611, the electronic device 101 (eg, at least one communication processor) may set both the first type communication and the second type communication to enable data transmission. For example, the second communication processor 214 may set the first type communication to a state in which data transmission is possible, and also set the second type communication to a state in which data transmission is possible, but this is exemplary, and There is no limit to the subject that sets the data transmission enabled state. In one embodiment, the first type of communication may be LTE communication, and the second type of communication may be NR communication, but it will be understood by those skilled in the art that this is exemplary.

According to various embodiments, in operation 613, the electronic device 101 may transmit transmission data using at least one communication device associated with the second type of communication set according to priority. For example, the second communication processor 214 may select the second type of communication according to the identified priority based on information received from the outside. The electronic device 101 includes at least one communication device associated with a second type of communication, for example, an RFIC associated with a second type of communication (eg, a second RFIC 224, a fourth RFIC 238), and a second type. RFFE associated with communication (e.g., a second RFFE 234, a third RFFE 236), an antenna module associated with a second type of communication (e.g., a second antenna module 244, a third antenna module 246) By using, transmission data can be transmitted.

According to various embodiments, in operation 615, the electronic device 101 may determine whether a second type of communication failure is detected. If the second type communication failure is not detected (615-No), the electronic device 101 may transmit the transmission data using at least one communication device related to the second type communication. When a second type of communication failure is detected (615-Yes), according to various embodiments, in operation 617, the electronic device 101 may transmit transmission data using at least one communication device associated with the first type of communication. . The electronic device 101 transmits data through a first type communication, which is a secondary path with a relatively low priority, even if the second type communication among the first type communication and the second type communication is set as the main path according to the priority. And, accordingly, transmission data is transmitted using at least one communication device (eg, the first RFIC 222, the first RFFE 232, the first antenna module 242) associated with the first type of communication. Can be transmitted.

7A is a flowchart illustrating a method of operating an electronic device according to various embodiments. Operations similar to those of FIG. 6A will be briefly described.

According to various embodiments, in operation 701, the electronic device 101 (eg, at least one communication processor) may configure a split bearer and set an uplink path through the SCG as a primary path. For example, the electronic device 101 may set a state in which all of a plurality of types of communication can transmit data. The uplink path through the MCG may be set as the secondary path.

According to various embodiments, in operation 703, the electronic device 101 may provide transmission data to a lower layer associated with the SCG. The electronic device 101 may transmit transmission data through an uplink path through the SCG. For example, the electronic device 101 may transmit transmission data based on a communication type having a higher priority.

According to various embodiments, in operation 705, the electronic device 101 may check whether an SCG failure is detected. If the SCG failure is not detected (705-No), according to various embodiments, in operation 707, the electronic device 101 may check whether the size of the transmission data is greater than or equal to a threshold. When the size of the transmission data is greater than or equal to the threshold (707-Yes), according to various embodiments, in operation 709, the electronic device 101 may provide transmission data to a lower layer associated with the MCG and a lower layer associated with the SCG. have. For example, the transmission PDCP entity of the electronic device 101 may provide transmission data to both an RLC entity associated with an MCG and an RLC entity associated with an SCG. The electronic device 101 may transmit transmission data through MCG and SCG.

According to various embodiments, when the size of the transmission data is less than the threshold (707-No), in operation 711, the electronic device 101 may provide the transmission data to a lower layer related to the SCG. The electronic device 101 may transmit transmission data using a communication type having a higher priority even if all of the plurality of communication types are set to be capable of data transmission.

According to various embodiments, when an SCG failure is detected (705-Yes), in operation 713, the electronic device 101 may provide transmission data to a lower layer associated with the MCG regardless of a threshold. The electronic device 101 according to various embodiments may be configured to transmit data through an MCG path irrespective of a threshold (eg, an uplink split threshold) when an SCG failure is detected.

7B is a flowchart illustrating a method of operating an electronic device according to various embodiments. Operations similar to those of FIG. 7A will be briefly described.

According to various embodiments, in operation 731, the electronic device 101 (eg, at least one communication processor) may configure a split bearer and set an uplink path through the SCG as a primary path. According to various embodiments, in operation 733, the electronic device 101 may provide transmission data to a lower layer associated with the SCG. According to various embodiments, in operation 735, the electronic device 101 may check whether an SCG failure is detected. If the SCG failure is not detected (735-No), according to various embodiments, in operation 737, the electronic device 101 may check whether the size of the transmission data is greater than or equal to a threshold. When the size of the transmission data is greater than or equal to the threshold (737-Yes), according to various embodiments, in operation 739, the electronic device 101 may provide transmission data to a lower layer associated with the MCG and a lower layer associated with the SCG. have. When the size of the transmission data is less than the threshold (737-No), according to various embodiments, in operation 741, the electronic device 101 may provide transmission data to a lower layer associated with the SCG. When an SCG failure is detected (735-Yes), according to various embodiments, in operation 743, the electronic device 101 changes a primary path to an MCG and provides transmission data to a lower layer associated with the MCG. can do. According to various embodiments, the transmission data may further include data stored in a lower layer associated with the SCG. For example, the electronic device 101 may transmit transmission data through a communication device associated with a communication method associated with an MCG by adjusting the priority of a communication type associated with the MCG.

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

According to various embodiments, in operation 801, the electronic device 101 (eg, at least one communication processor) transmits the transmission data to the lower layer associated with the SCG in the PDCP (eg, the second PDCP 511 of FIG. 5A). (Eg, the second RLC 513 of FIG. 5A) can detect SCG failure during provision. For example, the electronic device 101 may configure a split bearer and may set an uplink path of the SCG as a main path. The electronic device 101 may transmit transmission data through an uplink path of the SCG, which is a main path, and detect an SCG failure during this.

According to various embodiments, in operation 803, the electronic device 101 may provide transmission data to a lower layer associated with the MCG (eg, the first RLC 512 of FIG. 5A ). The electronic device 101 may transmit transmission data through an uplink path of an MCG set as a secondary path, for example.

According to various embodiments, in operation 805, the electronic device 101 may determine whether to transmit data in the buffer associated with the SCG. For example, the buffer associated with the SCG may be inside the second communication processor 214, but may be disposed outside the second communication processor 214 depending on implementation. For example, it may be included in a part of the memory (for example, the memory 130 of FIG. 1 ). The data in the buffer associated with the SCG may be, for example, data that is not transmitted after an SCG failure and is stored in the buffer.

According to various embodiments, if it is determined to transmit the data in the buffer associated with the SCG (805-Yes), the electronic device 101 may convert the data in the buffer associated with the SCG into the MCG format in operation 807. For example, in the data in the buffer associated with the SCG, an RLC PDU (eg, NR RLC PDU) including at least one header information and transmission data associated with the SCG may be stored. The electronic device 101 may extract only transmission data (or RLC service data unit (SDU)) from the RLC PDU, and include at least one header information related to the MCG in the transmission data (e.g., LTE RLC PDU) can be created. According to various embodiments, in operation 809, the electronic device 101 may provide the converted data, for example, an LTE RLC PDU, to a lower layer associated with the MCG. According to various embodiments, operation 803 may be performed after operations 807 and 809. For example, if it is determined to transmit the data in the buffer associated with the SCG (805-Yes), convert the data in the buffer associated with the SCG into the MCG format (operation 807) and provide the converted data to the lower layer associated with the MCG ( After operation 809), transmission data may be provided to a lower layer associated with the MCG (eg, the first RLC 512 of FIG. 5A) (operation 803).

According to various embodiments, if it is determined not to transmit data in the buffer associated with the SCG (805-No), in operation 811, the electronic device 101 may discard the data in the buffer associated with the SCG. According to various embodiments, in operation 813, the electronic device 101 may provide new data to a lower layer associated with the MCG.

In various embodiments, the electronic device 101 may determine whether to transmit data in a buffer associated with the SCG based on various types of parameters. For example, in consideration of the PDCP reordering timer, the electronic device 101 may convert the RLC PDU of the SCG into the RLC PDU of the MCG and transmit it before the packet discard timer expires in the BS. Accordingly, when the time required to retransmit the data in the buffer after conversion is less than the remaining time of the packet discard timer, the electronic device 101 may determine to transmit the data in the buffer. For example, the electronic device 101 may check the time required for retransmission based on the size of the data in the buffer, and whether to transmit the data in the buffer based on whether the checked time exceeds a threshold. You can check whether or not. Alternatively, the electronic device 101 may check whether to transmit the data in the buffer based on whether the size of the data in the buffer exceeds the threshold size.

9A is a diagram showing a radio protocol structure in an LTE system.

9A, the radio protocol of the LTE system is PDCP (packet data convergence protocol 961a, 961b), RLC (radio link control 962a, 962b), MAC (medium access control) in the UE 960a and the LTE eNB 960b, respectively. 963a, 963b).

Packet data convergence protocol (PDCP) 961a and 961b may perform operations such as IP header compression/restore. The main functions of PDCP can be summarized as follows.

-Header compression and decompression (ROHC only)

-Transfer of user data

-In-sequence delivery of upper layer PDUs at PDCP re-establishment procedure for RLC AM

-Order reordering function (for split bearers in DC (only support for RLC AM): PDCP PDU routing for transmission and PDCP PDU reordering for reception)

-Duplicate detection of lower layer SDUs at PDCP re-establishment procedure for RLC AM

-Retransmission of PDCP SDUs at handover and, for split bearers in DC, of PDCP PDUs at PDCP data-recovery procedure, for RLC AM

-Encryption and decryption function (ciphering and deciphering)

-Timer-based SDU discard in uplink.

The radio link control (hereinafter referred to as RLC) 962a and 962b may perform an ARQ operation or the like by reconfiguring a PDCP packet data unit (PDU) to an appropriate size. The main functions of RLC can be summarized as follows.

-Data transfer function (transfer of upper layer PDUs)

-ARQ function (error correction through ARQ (only for AM data transfer))

-Concatenation, segmentation and reassembly of RLC SDUs (only for UM and AM data transfer)

-Re-segmentation of RLC data PDUs (only for AM data transfer)

-Reordering of RLC data PDUs (only for UM and AM data transfer)

-Duplicate detection (only for UM and AM data transfer)

-Error detection function (protocol error detection (only for AM data transfer))

-RLC SDU discard function (RLC SDU discard (only for UM and AM data transfer))

-RLC re-establishment

The MACs 963a and 963b are connected to several RLC layer devices configured in one terminal, and may perform an operation of multiplexing RLC PDUs to MAC PDUs and demultiplexing RLC PDUs from MAC PDUs. The main functions of MAC can be summarized as follows.

-Mapping between logical channels and transport channels

-Multiplexing/demultiplexing of MAC SDUs belonging to one or different logical channels into/from transport blocks (TB) delivered to/from the physical layer on transport channels

-Scheduling information reporting function

-HARQ function (error correction through HARQ)

-Priority handling between logical channels of one UE

-Priority handling between UEs by means of dynamic scheduling

-MBMS service identification

-Transport format selection function

-Padding function

The physical layers 964a and 964b channel-code and modulate upper layer data, make them into OFDM symbols, and transmit them through a wireless channel, or demodulate OFDM symbols received through a radio channel, and perform channel decoding and transmission to the upper layers. can do.

9B is a diagram illustrating a radio protocol structure of a next-generation mobile communication system according to various embodiments.

9B, radio protocols of the next-generation mobile communication system include NR PDCPs 971a and 971b, NR RLCs 972a and 972b, and NR MACs 973a at UE 970a and NR base station (gNB) 970b, respectively. 973b). Although not shown, the radio protocol of the next generation mobile communication system may further include a Service Data Adaptation Protocol (SDAP) in the UE 970a and the NR base station (gNB) 970b, respectively. SDAP may manage radio bearer allocation based on QoS (Quality of Service) of user data, for example.

The main functions of the NR PDCPs 971a and 971b may include some of the following functions.

-Header compression and decompression (ROHC only)

-Transfer of user data

-In-sequence delivery of upper layer PDUs

-Order reordering function (PDCP PDU reordering for reception)

-Duplicate detection of lower layer SDUs

-Retransmission of PDCP SDUs

-Encryption and decryption function (ciphering and deciphering)

-Timer-based SDU discard in uplink

In the above, the NR PDCP reordering function refers to a function of rearranging the PDCP PDUs received from the lower layer in order based on the PDCP sequence number (SN), and the function of delivering data to the upper layer in the rearranged order. It may include, and may include a function of reordering the order to record the lost PDCP PDUs, and may include a function of reporting the status of the lost PDCP PDUs to the transmitting side, and to the lost PDCP PDUs It may include a function of requesting retransmission for.

The main functions of the NR RLCs 972a and 972b may include some of the following functions.

-Data transfer function (transfer of upper layer PDUs)

-In-sequence delivery of upper layer PDUs

-Out-of-sequence delivery of upper layer PDUs

-ARQ function (error correction through ARQ)

-Concatenation, segmentation and reassembly of RLC SDUs

-Re-segmentation of RLC data PDUs

-Reordering of RLC data PDUs

-Duplicate detection

-Protocol error detection

-RLC SDU discard function (RLC SDU discard)

-RLC re-establishment

In the above, in-sequence delivery of NR RLC refers to a function of sequentially delivering RLC SDUs received from a lower layer to an upper layer, and originally, one RLC SDU is divided into several RLC SDUs and received. In this case, it may include a function of reassembling and delivering it, and may include a function of rearranging the received RLC PDUs based on an RLC sequence number (SN) or a PDCP sequence number (SN). It may include a function of recording lost RLC PDUs, may include a function of reporting a status of lost RLC PDUs to a transmitting side, and a function of requesting retransmission of lost RLC PDUs. And, when there is a lost RLC SDU, it may include a function of transferring only RLC SDUs before the lost RLC SDU to a higher layer in order, or even if there is a lost RLC SDU, if a predetermined timer expires, the timer is It may include a function of delivering all RLC SDUs received before starting to the upper layer in order, or if a predetermined timer expires even if there is a lost RLC SDU, all RLC SDUs received so far are delivered to the upper layer in order. It may include a function to do. In the above, out-of-sequence delivery of NR RLC refers to a function of delivering RLC SDUs received from a lower layer to an upper layer immediately regardless of order, and originally, one RLC SDU is a function of multiple RLC SDUs. When it is divided and received, it may include a function of reassembling and transmitting it, and may include a function of storing the RLC SN or PDCP SN of the received RLC PDUs, sorting the order, and recording the lost RLC PDUs. have.

The NR MACs 973a and 973b may be connected to several NR RLC layers configured in one terminal, and the main functions of the NR MAC may include some of the following functions.

-Mapping between logical channels and transport channels

-Multiplexing and demultiplexing (multiplexing/demultiplexing of MAC SDUs)

-Scheduling information reporting function

-HARQ function (error correction through HARQ)

-Priority handling between logical channels of one UE

-Priority handling between UEs by means of dynamic scheduling

-MBMS service identification

-Transport format selection function

-Padding function

The NR PHY layers 974a and 974b perform channel coding and modulation of upper layer data, making them into OFDM symbols, and transmitting them through a wireless channel, or demodulating and channel decoding OFDM symbols received through a radio channel and transmitting them to the upper layers. Can be done.

Table 2 below describes information that may be included in the MAC header.

variable purpose LCID The LCID may indicate the identifier of the RLC entity that generated the RLC PDU (or MAC SDU) received from the upper layer. Alternatively, it may represent MAC CE (Control element) or padding. And it may be defined differently according to the transmitted channel. For example, it may be defined differently according to DL-SCH, UL-SCH, and MCH. L This indicates the length of the MAC SDU, and may indicate the length of the MAC CE having a variable length. In the case of MAC CE having a fixed length, the L-field can be omitted. The L-field can be omitted for some reason. The predetermined reason is a case in which the size of the MAC SDU is fixed, the size of the MAC PDU is notified from the transmitting side to the receiving side, or the length can be calculated by the receiving side through calculation. F Indicate the size of the L-field. If there is no L-field, it can be omitted, and if there is an F-field, the size of the L-field can be limited to a predetermined size. F2 Indicate the size of the L-field. If there is no L-field, it can be omitted, and if there is an F2-field, the size of the L-field can be limited to a predetermined size and a size different from the F-field. For example, the F2-field may indicate a larger size than the F-field. E Indicates whether there are other headers in the MAC header. For example, if it has a value of 1, other variables of the MAC header may follow. However, if it has a value of 0, MAC SDU, MAC CE, or Padding may follow. R This is a reserved bit.

9C, a UE 900 (eg, electronic device 101) according to various embodiments includes a PDCP entity 901, an RLC entity 902, a MAC entity 903, and a PHY entity 904. Can be set. The PDCP entity 901, the RLC entity 902, the MAC entity 903, and the PHY entity 904 may be entities based on the radio protocol of the LTE system or may be entities based on the radio protocol of the NR system. For example, when the UE 900 transmits and receives data based on LTE, the PDCP entity 901, the RLC entity 902, the MAC entity 903, and the PHY entity 904 based on the radio protocol of the LTE system Can be set. For example, when the UE 900 transmits and receives data based on NR, the PDCP entity 901, the RLC entity 902, the MAC entity 903, and the PHY entity 904 based on the radio protocol of the NR system Can be set.

For example, as shown in FIG. 9C, the PDCP entity 901 further includes PDCP headers 921, 923, 925 in each of the PDCP SDUs 914, 915, 916 based on data 911, 912, 913, which are IP (internet protocol) packets, PDUs 922,924,926 can be provided. The PDCP header information provided by the LTE PDCP entity may be different from the PDCP header information provided by the NR PDCP entity.

The RLC entity 902 may provide RLC PDUs 933 and 936 by adding RLC headers 931 and 934 to each of the first data 932 and second data 935 reconstructed from the RLC SDUs 922, 924, and 926. RLC header information based on LTE may be different from RLC header information based on NR.

The MAC entity 902 may provide a MAC PDU 943 by adding a MAC header 941 and padding 942 to the MAC SDU 933, for example, which is a transport block. It can be processed at the physical layer 904 with 951. The transport block 951 may be processed as slots 952,953,954,955,956.

9D is a diagram illustrating a reverse operation according to various embodiments.

The electronic device 101 according to various embodiments may check whether to transmit data in the buffer associated with the SCG in operation 805, as shown in FIG. 8, and transfer data in the buffer in an MCG format in operation 807. Can be converted. For example, the electronic device 101 may store the RLC PDU 990a in the buffer. For example, the RLC PDU 990a may be provided by NR PDCP and NR RLC. The RLC PDU 990a may include data 991 (or NR PDCP SDU), an NR PDCP header 992, and an NR RLC header 993. For example, the RLC PDU 990a may be stored in the buffer of the second communication processor 214.

The electronic device 101 may extract data 991 from the RLC PDU 990a. The electronic device 101 may provide the RLC PDU 990b by reflecting the LTE PDCP header 995 and the LTE RLC header 996 in the extracted data 991. The electronic device 101 may provide the RLC PDU 990b to the LTE MAC and transmit it to the LTE base station. For example, the data 991 may be transferred from the second communication processor 214 to the first communication processor 212, and the first communication processor 212 is based on the data 991, the RLC PDU 990b ) Can be provided. Alternatively, the second communication processor 214 may extract the data 991, generate the RLC PDU 990b based on the data 991, and transmit the RLC PDU 990b to the first communication processor 212.

10 is a flowchart illustrating a method of operating an electronic device according to various embodiments.

In operation 1001, the electronic device 101 (eg, at least one communication processor) according to various embodiments may receive a first message instructing to report measurement information when a first type event occurs. The electronic device 101 may receive, for example, a first message indicating a reporting condition (eg, RRC connection reconfiguration) from the MN. The electronic device 101 may measure information associated with the SN designated in the first message, and when it is determined that the reporting condition is satisfied, may be set to transmit the report message to the MN. Thereafter, the electronic device 101 may transmit data through an uplink path associated with the SCG.

According to various embodiments, in operation 1003, the electronic device 101 may determine whether an event indicating SCG failure is detected. When an SCG failure is detected (1003-Yes), the electronic device 101, according to various embodiments, in operation 1005, irrespective of the occurrence of a type 1 event, measurement information related to the SCG (eg, among RSRP or RSRQ). At least one) may be transmitted as the first report message set to the lowest value. Meanwhile, the electronic device 101 may set the measurement information associated with the SCG to an arbitrary value less than the specified threshold, not the minimum, and there is no limit to the value set as the measurement information. Accordingly, it is also possible to induce the MN to stop communication with the corresponding SCG. For example, the first type event may be “serving becomes worse than threshold: A2”. The electronic device 101 may set to report a measurement result when the signal of the currently serving node is less than a specific value. When the SCG failure is detected, the electronic device 101 may transmit a report message in which the measurement information is set to the lowest value to the MN when the event of A2 is detected. However, in various embodiments, even when the event of A2 is not detected, the electronic device 101 may transmit a report message in which the measurement information is set to a minimum value to the MN.

According to various embodiments, if an SCG failure is not detected (1003-No), in operation 1007, the electronic device 101 may check whether a first type event is detected. According to various embodiments, when a first type event is detected (1007-YES), in operation 1009, the electronic device 101 may transmit a second report message including measurement information to the MN. According to various embodiments, if the first type event is not detected (1007-No), in operation 1003, the electronic device 101 may check whether an SCG failure is detected again.

11 is a flowchart illustrating a method of operating a user terminal, an MN, and an SN according to various embodiments.

According to various embodiments, the UE 1100 (eg, the electronic device 101) includes a 5G modem 1101 (eg, the second communication processor 214 in FIG. 2A) and an LTE modem 1102 (eg, FIG. It may include the first communication processor 212 of 2a. In operation 1111, the LTE modem 1102 may perform RRC Connection Reconfiguration so that the MN 1103 and the SCG measurement information (SCG Meas.) reporting condition are set to event B1. Here, event B1 may indicate an event in which measurement information corresponding to an inter RAT neighbor exceeds a threshold value. In operation 1112, the LET modem 1101 may set an SCG measurement report condition (SCG measure config.). The 5G modem 1101 may perform a measurement in operation 1113. In addition, the LTE modem 1102 may complete the attachment with the MN 1103 in operation 1114. If it is determined that event B1 is satisfied, in operations 1115 and 1116, the 5G modem 1101 and the LTE modem 1102 may transmit a measurement report to the MN 1103. For example, the electronic device 101 may transmit cell identification information (or node identification information) for a measurement amount exceeding a threshold value to the MN 1103.

In operation 1117, the MN 1103 may determine the SCG based on a meas. Report. For example, MN 1103 may select SN 1104. The MN 1103 may request an SgNB add to the SN 1104 in operation 1118 and receive an ack for this. The MN 1103 may perform RRC connection reconfiguration with SCG including the reporting condition of event A2 to the UE 1100 in operation 1119. The 5G modem 1101 may set a reporting condition in operation 1120. In operation 1121, the 5G modem 1101 may perform SSB synchronization 1121. The UE 1100 may perform a contention free (CF) RACH with the SN 1104 in operation 1122. In operation 1123, the UE 1100 may complete the addition of the MN 1103, the SN 1104 and the SCG.

In operation 1124, the UE 1100 performs measurement and detects an event A2, which is a serving becomes wore than threshold, and the intensity corresponding to the serving cell (eg, SN 1104) is less than a threshold. In operations 1125 and 1126, the UE 1100 may transmit a fake measurement report in response to detection of event A2 to the MN 1103. In the false measurement report, at least one of RSRP or RSRQ may be set to the lowest value. As described above, RSRP or RSRQ may be set to an arbitrary value less than the threshold, and there is no limit to the value. Alternatively, the UE 1100 may transmit a false measurement report to the MN 1103 in response to an SCG failure without event A2 being detected. In operation 1127, the MN 1103 and the SN 1104 may transmit/receive an SgNB release request/ac. The MN 1103 may perform RRC connection reconfiguration associated with the SCG release setting with the UE 1100 in operation 1128.

12A is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.

In operation 1201, the electronic device 101 (eg, at least one communication processor) according to various embodiments may detect a failure event for the first SCG cell. As described above, the electronic device 101 fails in the SCG based on, for example, when the number of RLC retransmission exceeds a threshold number or upon receiving an indication indicating SCG failure (e.g. : SCG RLC failure) has occurred, and there is no limit to SCG failure events.

According to various embodiments, in operation 1203, the electronic device 101 may release the connection with the first SCG cell. For example, as described in FIG. 11, the electronic device 101 may transmit a measurement report in which the measurement information corresponding to the first SCG cell is set to the lowest value to the MN, whereby the MN connects to the SCG cell. Can be induced to release. As described above, the measurement information may be set without limitation if it is a value less than a certain threshold. According to various embodiments, in operation 1205, the electronic device 101 may receive a first message instructing to report SCG related measurement information. For example, the electronic device 101 may receive an RRC connection reconfiguration including event B1 from the MN. The electronic device 101 may not perform measurement on the first SCG in which the failure event has been detected. Accordingly, the electronic device 101 may not report measurement information on the first SCG to the MN, and reconnection with the first SCG may be restricted. The electronic device 101 may not perform measurement on the first SCG for a specified time, and may perform measurement on the first SCG when the specified time is exceeded. When an event B1 in which the measurement degree of the first SCG exceeds the threshold value is detected, the electronic device 101 may transmit a measurement report including information indicating the first SCG and the measurement degree to the MN.

12B is a flowchart illustrating a method of operating an electronic device according to various embodiments. An operation similar to that of FIG. 12A will be briefly described.

In operation 1211, the electronic device 101 (eg, at least one communication processor) according to various embodiments may detect a failure event for the first SCG cell. According to various embodiments, in operation 1213, the electronic device 101 may release the connection with the first SCG cell. According to various embodiments, in operation 1215, the electronic device 101 may receive a first message instructing to report an SCG corresponding to a reception strength exceeding a threshold. For example, when the event B1 occurs, the electronic device 101 may receive a first message indicating that measurement information is reported.

According to various embodiments, in operation 1217, the electronic device 101 may detect that a reception intensity corresponding to at least one SCG cell including the first SCG cell exceeds a threshold value. According to various embodiments, in operation 1219, the electronic device 101 may transmit a first report message including measurement information on SCG cells other than the first SCG cell to the MN. After the preset time has elapsed, when the reception strength corresponding to the first SCG cell exceeds the threshold, the electronic device 101 may transmit a report message including measurement information on the first SCG cell to the MN. .

13 is a flowchart illustrating operations of a UE, an MCG, and an SCG according to various embodiments.

The UE 1300a (eg, the electronic device 101) according to various embodiments may include an SCG modem 1300b and an MCG modem 1300c. In operation 1301, the MCG modem 1300c may establish an RRC connection with the MCG 1300d. In operation 1302, the MCG modem 1300c may perform an authentication/security procedure with the MCG 1300d. In operation 1303, the MCG modem 1300c may perform RRC connection reconfiguration associated with the MCG 1300d and SCG measurement configuration. The SCG modem 1300b may perform SCG measurement configuration in operation 1304. For example, the SCG measurement setting may be reporting measurement information when event B1 is detected. However, the UE 1300b may not perform measurement for a certain period of time for the node in which the SCG failure has occurred (1305). Accordingly, an operation for completing the attach indicated by 1306, forwarding a measurement report indicated by 1307 and 1308, an operation for selecting an SCG indicated by 1309, an SgNB addition request/acknowledgement operation indicated by 1310, an RRF connection reconfiguration operation indicated by 1311, The SSB synchronization operation indicated by 1312, the CF RACH operation indicated by 1313, and the SCG addition completion operation indicated by 1314 may not be performed. Accordingly, it can be prevented that a connection is additionally re-established with respect to the SCG 1300e in which the failure has been detected.

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

In operation 1401, the electronic device 101 (eg, at least one communication processor) according to various embodiments may provide transmission data to a lower layer associated with the SCG. For example, the electronic device 101 may set a split bearer and transmit transmission data through an uplink path of an SCG set as a main path.

According to various embodiments, in operation 1403, the electronic device 101 may detect an SCG failure. According to various embodiments, in operation 1405, the electronic device 101 may transmit UE assistance information instructing to adjust the bandwith of a designated channel to 0 to the MN. For example, the electronic device 101 may request to adjust the bandwidth in FR2 (for example, a frequency band of 24 GHz or higher) to 0, and accordingly, may induce the MN to terminate SCG communication in FR2. .

According to various embodiments, the electronic device (eg, the electronic device 101) supports communication with a first network (eg, the first network 292) with a first network (eg, the first network 292). A second network with a first communication processor (eg, first communication processor 212), and a second network (eg, second network 294) different from the first network (eg, first network 292) A second communication processor (eg, a second communication processor 214) that supports communication may be included. When both the first network communication and the second network communication are set to a state in which data transmission is possible, the second communication processor (for example, the second communication processor 214), when the size of the transmission data is less than a specified threshold size May be set to transmit the transmission data based on the second network communication selected as a main path among the first network communication and the second network communication. In response to detecting a failure in the second network communication, the first communication processor (for example, the first communication processor 212) is irrespective of whether the size of the transmitted data is greater than or equal to the specified threshold size. Thus, it may be set to transmit the transmission data based on the first network communication.

According to various embodiments, when both the first network communication and the second network communication are set to a state in which data transmission is possible, the first communication processor (e.g., the first communication processor (eg, : A first communication processor 212) and the second communication processor (for example, the second communication processor 214), based on the first network communication and the second network communication, to transmit the transmission data Can be set.

According to various embodiments, based on a split bearer, both the first network communication and the second network communication may be set to a state in which data transmission is possible.

According to various embodiments, based on the split bearer, a transmission packet data convergence protocol (PDCP) entity of the electronic device (for example, the electronic device 101) is a first RLC corresponding to the first network communication. It may be associated with both a (radio link control) entity and a second RLC entity corresponding to the second network communication.

According to various embodiments, data transmission may be performed based on the first network communication based on a master cell group radio bearer (MCG).

According to various embodiments, based on the MCG radio bearer, a transmission packet data convergence protocol (PDCP) entity of the electronic device (for example, the electronic device 101) corresponds to the first network communication. It may be associated with a radio link control (RLC) entity.

According to various embodiments, when it is determined to transmit untransmitted data stored in the buffer of the second communication processor (eg, the second communication processor 214) without being transmitted due to a failure in the second network communication, the The first communication processor (e.g., the first communication processor 212) acquires untransmitted data converted to have a format corresponding to the second network communication to have a format corresponding to the first network communication, and the conversion It may be set to transmit the untransmitted data, based on the first network communication.

According to various embodiments, the converted untransmitted data is a process of verifying the data from the untransmitted data including information and data supported by the second network communication, and at least a part of the confirmed data To, it may be provided based on a process of adding information supported by the first network communication.

According to various embodiments, the untransmitted data is an RLC PDU according to the second network communication, and the information supported by the second network communication is RLC header information according to the second network communication, or the second Including at least one of PDCP header information by network communication, the converted untransmitted data is an RLC PDU by the first network communication, information supported by the first network communication, the first network communication It may include at least one of RLC header information according to or PDCP header information according to the first network communication.

According to various embodiments, a first communication processor (eg, a first communication processor 212) supporting a first network communication with a first network (eg, the first network 292), and the first network (eg, : An electronic device (eg, electronic device 101) including a second communication processor (eg, a second communication processor 214) supporting a second network communication with a second network different from the first network 292 ) In the operation method, when both the first network communication and the second network communication are set in a state in which data transmission is possible, the size of the transmission data is determined by the second communication processor (eg, the second communication processor 214) If is less than the specified threshold size, the operation of transmitting the transmission data based on the second network communication selected as a main path among the first network communication and the second network communication, and failure in the second network communication In response to detecting (failure), the first network communication by the first communication processor (for example, the first communication processor 212), regardless of whether the size of the transmission data is equal to or greater than the specified threshold size. Based on, it may include an operation of transmitting the transmission data.

According to various embodiments, the method of operating an electronic device (eg, the electronic device 101) is set to a state in which both the first network communication and the second network communication can transmit data, and the size of the transmitted data is Based on the specified threshold size or more, by the first communication processor and the second communication processor (for example, the second communication processor 214), based on the first network communication and the second network communication, the It may further include an operation of transmitting transmission data.

According to various embodiments, based on a split bearer, both the first network communication and the second network communication may be set to a state in which data transmission is possible.

According to various embodiments, based on the split bearer, a transmission packet data convergence protocol (PDCP) entity of the electronic device is a first radio link control (RLC) entity corresponding to the first network communication and the first It may be associated with both the second RLC entity corresponding to the two network communication.

According to various embodiments, data transmission may be possible based on the first network communication based on a master cell group radio bearer (MCG).

According to various embodiments, based on the MCG radio bearer, a transmission packet data convergence protocol (PDCP) entity of the electronic device is associated with a first radio link control (RLC) entity corresponding to the first network communication. Can be.

According to various embodiments, the method of operating an electronic device (eg, the electronic device 101) is not transmitted due to a failure in the second network communication, but the second communication processor (eg, the second communication processor 214) ), when it is determined to transmit the untransmitted data stored in the buffer, by the first communication processor (eg, the first communication processor 212), the untransmitted converted to have a format corresponding to the first network communication An operation of acquiring data, and an operation of transmitting the converted untransmitted data by the first communication processor (eg, the first communication processor 212) based on the first network communication. have. Before conversion, the format of the untransmitted data may have a format corresponding to the second network communication.

According to various embodiments, the converted untransmitted data is a process of verifying the data from the untransmitted data including information and data supported by the second network communication, and at least a part of the confirmed data To, it may be provided based on a process of adding information supported by the first network communication.

According to various embodiments, an electronic device (eg, the electronic device 101) includes a first communication processor (eg, a first communication processor 212) supporting a first network communication with a first network, and the A second communication processor (eg, a second communication processor 214) supporting a second network communication with a second network different from the first network, and both the first network communication and the second network communication transmit data. When the second communication processor (e.g., the second communication processor 214) is set to a possible state, when the size of the transmission data is less than the specified threshold size, the primary network communication and the second network communication Based on the second network communication selected as a path, set to transmit the transmission data, and in response to detecting a failure in the second network communication, the first communication processor (for example, the first communication processor (212), to transmit a report signal in which at least one parameter indicating the strength of the signal of the second network communication measured by the electronic device is set to a minimum value, to a first node corresponding to the first network communication. Can be set.

According to various embodiments, when the first communication processor (eg, the first communication processor 212) receives, from the first node, information indicating a first event for transmitting the report signal, the first 1 communication processor (for example, the first communication processor 212), when the occurrence of the first event is detected, transmits the report signal to the first node, and the first event 2 When the failure in network communication is detected, it may be configured to transmit the report signal to the first node.

According to various embodiments, the first communication processor (for example, the first communication processor 212), the first node, the signal strength output from the neighboring node related to the second network communication is greater than or equal to a threshold. 2 When an event is detected, when a command to transmit a second report signal is received, measurement is not performed on the node in which the failure is detected, or the strength of the signal output from the node where the failure is detected is It may be set to refrain from transmitting the second report signal even if it is equal to or greater than the threshold.

Electronic devices according to various embodiments disclosed in this document may be devices of various types. The electronic device may include, for example, a computer device, a portable communication device (eg, a smartphone), a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

Various embodiments of the present document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutes of the corresponding embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or a plurality of the items unless clearly indicated otherwise in a related context. In this document, “A or B”, “at least one of A and B”, “at least one of A or B,” “A, B or C,” “at least one of A, B and C,” and “A Each of phrases such as "at least one of, B, or C" may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” may be used simply to distinguish a corresponding component from other corresponding Order) is not limited. Some (eg, first) component is referred to as “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When mentioned, it means that any of the above components can be connected to the other components directly (eg by wire), wirelessly, or via a third component.

The term "module" used in this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic blocks, parts, or circuits. The module may be an integrally configured component or a minimum unit of the component or a part thereof 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).

Various embodiments of the present document are software including one or more instructions stored in a storage medium (eg, internal memory or external memory) that can be read by a machine (eg, a master device or a task performing device). Example: Program). For example, the processor of the device (for example, a master device or a task performing device) may call at least one command of 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 at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here,'non-transient' only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic wave), and this term refers to the case where data is semi-permanently stored in the storage medium. It does not distinguish between temporary storage cases.

According to an embodiment, a method according to various embodiments disclosed in the present document may be provided by being included in a computer program product. Computer program products can be traded between sellers and buyers as commodities. Computer program products are distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play StoreTM) or two user devices (e.g. It can be distributed (e.g., downloaded or uploaded) directly between, e.g. smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium that can be read by a device such as a server of a manufacturer, a server of an application store, or a memory of a relay server.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular number or a plurality of entities. 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 in the same or similar to that 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 sequentially, parallel, repeatedly, or heuristically executed, or one or more of the above operations are executed in a different order or omitted. Or one or more other actions may be added.

Claims (20)

In the electronic device,
A first communication processor supporting a first network communication with a first network; And
A second communication processor supporting second network communication with a second network different from the first network
Including,
When both the first network communication and the second network communication are set to a state in which data transmission is possible, the second communication processor,
When the size of the transmission data is less than the specified threshold size, it is set to transmit the transmission data based on the second network communication selected as a main path among the first network communication and the second network communication,
In response to detecting a failure in the second network communication, the first communication processor,
An electronic device configured to transmit the transmission data based on the first network communication regardless of whether the size of the transmission data is equal to or greater than the specified threshold size. The method of claim 1,
When both the first network communication and the second network communication are set to a state in which data transmission is possible,
Based on the size of the transmission data being equal to or greater than the specified threshold size, the first communication processor and the second communication processor may transmit the transmission data based on the first network communication and the second network communication. Set electronic devices. The method of claim 1,
An electronic device, characterized in that, based on a split bearer, both the first network communication and the second network communication are set to a state in which data transmission is possible. The method of claim 3,
Based on the split bearer, a transmission packet data convergence protocol (PDCP) entity of the electronic device corresponds to a first radio link control (RLC) entity corresponding to the first network communication and a second network communication. Electronic device, characterized in that associated with all of the second RLC entity. The method of claim 1,
An electronic device characterized in that the transmission data is transmitted based on the first network communication based on an MCG radio bearer (master cell group radio bearer). The method of claim 5,
Electronic characterized in that the transmission packet data convergence protocol (PDCP) entity of the electronic device is associated with a first radio link control (RLC) entity corresponding to the first network communication based on the MCG radio bearer Device. The method of claim 1,
If it is determined to transmit untransmitted data stored in the buffer of the second communication processor without being transmitted due to a failure in the second network communication-the format of the untransmitted data has a format corresponding to the second network communication -,
The first communication processor,
Acquiring untransmitted data converted to have a format corresponding to the first network communication,
An electronic device configured to transmit the converted untransmitted data based on the first network communication. The method of claim 7,
The converted untransmitted data,
The process of checking the data from the untransmitted data including information and data supported by the second network communication, and
The electronic device, characterized in that it is provided based on a process of adding information supported by the first network communication to at least a part of the identified data. The method of claim 8,
The untransmitted data is an RLC PDU according to the second network communication,
The information supported by the second network communication includes at least one of RLC header information according to the second network communication or PDCP header information according to the second network communication,
The converted untransmitted data is an RLC PDU according to the first network communication,
The information supported by the first network communication includes at least one of RLC header information according to the first network communication or PDCP header information according to the first network communication. A method of operating an electronic device comprising a first communication processor supporting a first network communication with a first network, and a second communication processor supporting a second network communication with a second network different from the first network. ,
When both the first network communication and the second network communication are set to a state in which data transmission is possible, when the size of transmission data is less than a specified threshold size by the second communication processor, the first network communication and the second network communication 2 An operation of transmitting the transmission data based on the second network communication selected as a main path among network communication, and
In response to detecting a failure in the second network communication, by the first communication processor, regardless of whether the size of the transmission data is equal to or greater than the specified threshold size, based on the first network communication , The operation of transmitting the transmission data
Operating method of an electronic device comprising a. The method of claim 10,
Based on both the first network communication and the second network communication being set to a state in which data transmission is possible, and the size of the transmission data is equal to or greater than the specified threshold size, by the first communication processor and the second communication processor, Transmitting the transmission data based on the first network communication and the second network communication together
The method of operating an electronic device further comprising a. The method of claim 10,
An electronic device operating method, characterized in that based on a split bearer, both the first network communication and the second network communication are set to a state in which data transmission is possible. The method of claim 12,
Based on the split bearer, a transmission packet data convergence protocol (PDCP) entity of the electronic device corresponds to a first radio link control (RLC) entity corresponding to the first network communication and a second network communication. The method of operating an electronic device, characterized in that associated with all of the second RLC entities. The method of claim 10,
The method of operating an electronic device, wherein the transmission data is transmitted based on the first network communication based on a master cell group radio bearer (MCG). The method of claim 14,
Electronic characterized in that the transmission packet data convergence protocol (PDCP) entity of the electronic device is associated with a first radio link control (RLC) entity corresponding to the first network communication based on the MCG radio bearer How the device works. The method of claim 10,
If it is determined to transmit untransmitted data stored in the buffer of the second communication processor without being transmitted due to a failure in the second network communication-the format of the untransmitted data has a format corresponding to the second network communication -,
Acquiring, by the first communication processor, untransmitted data converted to have a format corresponding to the first network communication; And
Transmitting, by the first communication processor, the converted untransmitted data based on the first network communication
Operating method of an electronic device comprising a. The method of claim 16,
The converted untransmitted data,
The process of checking the data from the untransmitted data including information and data supported by the second network communication, and
And providing information supported by the first network communication to at least a portion of the identified data. In the electronic device,
A first communication processor supporting a first network communication with a first network; And
A second communication processor supporting second network communication with a second network different from the first network
Including,
When both the first network communication and the second network communication are set to a state in which data transmission is possible, the second communication processor,
When the size of the transmission data is less than the specified threshold size, it is set to transmit the transmission data based on the second network communication selected as a main path among the first network communication and the second network communication,
In response to detecting a failure in the second network communication, the first communication processor,
An electronic device configured to transmit a report signal in which at least one parameter indicating the strength of the signal of the second network communication measured by the electronic device is set to a minimum value, to a first node corresponding to the first network communication. The method of claim 18,
When the first communication processor receives, from the first node, information indicating a first event for transmitting the report signal, the first communication processor,
When the occurrence of the first event is detected, the report signal is transmitted to the first node,
The electronic device configured to transmit the report signal to the first node when the failure in the second network communication is detected while the occurrence of the first event is not detected. The method of claim 18,
The first communication processor receives, from the first node, a command to transmit a second report signal when a second event in which the strength of a signal output from a node related to the neighboring second network communication is greater than or equal to a threshold is detected In one case,
The electronic device configured to refrain from transmitting the second report signal even if the measurement is not performed on the node in which the failure is detected, or the strength of the signal output from the node in which the failure is detected is greater than or equal to the threshold.

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