Electronic device for identifying state of communication-related circuit

Abstract

An electronic device is provided. The electronic device may include an antenna; a local oscillator (LO); comprising a mixer connected to the LO; comprising the mixer connected to the LO; a radio frequency integrated circuit (RFIC) comprising a first switch for connecting the PA or the Rx link to the Tx link and a second switch for connecting the coupler or the Tx link to the Rx link; and a processor.

Description

Technical Field

[0001] The following description relates to an electronic device for identifying a state of circuitry associated with communications. Background Art

[0002] The electronic device may include an antenna, a radio frequency front end (RFFE), and a radio frequency integrated circuit (RFIC) for wireless communication with an external electronic device. For example, the electronic device may use the antenna, RFFE, and RFIC to send a signal to the external electronic device. For example, the electronic device may use a mixer in the RFIC to set the frequency of the signal and / or use a power amplifier (PA) in the RFFE to set the transmission power of the signal at the frequency. For example, the electronic device may use an antenna to send a signal at the frequency to the external electronic device at the transmission power. Summary of the invention

[0003] Technical Solution

[0004] An electronic device is provided. The electronic device may include an antenna. The electronic device may include a radio frequency front end (RFFE), the RFFE including a coupler connected to the antenna and a power amplifier (PA) connected to the coupler. The electronic device may include an RFIC, the RFIC including a local oscillator (LO), a Tx (transmit) link including a mixer connected to the LO, an Rx (receive) link including a mixer connected to the LO, a first switch for connecting the PA or the Rx link to the Tx link, and a second switch for connecting the coupler or the Tx link to the Rx link. The electronic device may include a processor. Based on connecting the PA and the Tx link through the first switch and connecting the coupler and the Rx link through the second switch, the processor may be configured to transmit a first signal obtained through the Tx link through the antenna using a power set by the PA, and obtain a coupled signal of the first signal through the Rx link. Based on connecting the Tx link disconnected from the PA (161) and the Rx link disconnected from the coupler through the first switch and the second switch, the processor may be configured to obtain a second signal obtained through the Tx link through the Rx link. The processor may be configured to identify a state of the RFFE and a state of the RFIC based at least in part on a coupled signal of the first signal and the second signal.

[0005] An electronic device is provided. The electronic device may include an antenna. The electronic device may include: a radio frequency integrated circuit (RFIC) including a local oscillator (LO), a Tx (transmit) link including a mixer connected to the LO, and an Rx (receive) link including a mixer connected to the LO. The electronic device may include a radio frequency front end (RFFE), the RFFE including a coupler connected to the antenna and connected to the Rx link, a power amplifier (PA), a first switch for connecting the PA or the coupler to the Tx link, and a second switch for connecting the Tx link or the PA to the coupler. The electronic device may include a processor. Based on connecting the PA and the Tx link through the first switch and connecting the coupler and the Rx link through the second switch, the processor may be configured to send a first signal obtained through the Tx link via the antenna with a power set by the PA, and obtain a coupled signal of the first signal through the Rx link. Based on connecting the Tx link disconnected from the PA and the coupler disconnected from the PA through the first switch and the second switch, the processor may be configured to send a second signal obtained through the Tx link and obtain a coupled signal of the second signal through the Rx link. Based at least in part on the coupled signal of the first signal and the coupled signal of the second signal, the processor may be configured to identify a state of the RFFE and a state of the RFIC.

[0006] An electronic device is provided. The electronic device may include a first antenna. The electronic device may include a second antenna. The electronic device may include a first radio frequency front end (RFFE), the first RFFE including a coupler connected to the first antenna and a power amplifier (PA) connected to the coupler. The electronic device may include a second RFFE, the second RFFE including a coupler connected to the second antenna and a PA connected to the coupler, the coupler being connected to the second antenna. The electronic device may include a radio frequency integrated circuit (RFIC), the RFIC including a first local oscillator (LO), a second LO, a first Tx (transmit) link including a mixer connectable to a first LO of the first LO and the second LO, a second Tx link including a mixer connectable to a second LO of the first LO and the second LO, an Rx (receive) link including a mixer connectable to the first LO or the second LO, a first switch for connecting a PA of the first RFFE or the Rx link to the first Tx link or connecting a PA of the second RFFE or the Rx link to the second Tx link, a second switch for connecting a coupler of the first RFFE or the first Tx link to the Rx link or connecting a coupler of the second RFFE or the second Tx link to the Rx link, and a third switch for connecting the first LO to the mixer of the first Tx link, connecting the second LO to the mixer of the second Tx link, or connecting the first LO or the second LO to the mixer of the Rx link. The electronic device may include a processor. The processor may be configured to: when the first LO is connected to the mixer of the first Tx link through the third switch, based on connecting the PA of the first RFFE and the first Tx link through the first switch, transmit the first signal obtained through the first Tx link via the first antenna with the power set by the PA of the first RFFE. The processor may be configured to: when the first LO is connected to the mixer of the Rx link through the third switch, based on connecting the coupler of the first RFFE and the Rx link through the second switch, obtain a coupled signal of the first signal through the Rx link. The processor may be configured to: when the second LO is connected to the mixer of the second Tx link through the third switch, based on connecting the PA of the second RFFE and the second Tx link through the first switch, transmit the second signal obtained through the second Tx link via the second antenna with the power set by the PA of the second RFFE. The processor may be configured to: when the second LO is connected to the mixer of the Rx link through the third switch, based on connecting the coupler of the second RFFE and the Rx link through the second switch, obtain a coupled signal of the second signal through the Rx link.The processor may be configured to obtain a third signal based on connecting the first Tx link disconnected from the PA of the first RFFE and the Rx link disconnected from the coupler of the first RFFE through the first switch and the second switch, the third signal being obtained through the first Tx link when the first LO is connected to the mixer of the first Tx link through the third switch, and being obtained through the Rx link when the first LO is connected to the mixer of the Rx link through the third switch. The processor may be configured to obtain a fourth signal based on connecting the second Tx link disconnected from the PA of the second RFFE and the Rx link disconnected from the coupler of the second RFFE through the first switch and the second switch, the fourth signal being obtained through the second Tx link when the second LO is connected to the mixer of the second Tx link through the third switch, and being obtained through the Rx link when the second LO is connected to the mixer of the Rx link through the third switch. The processor may be configured to identify the state of the first RFFE, the state of the second RFFE, and the state of the RFIC based at least in part on the coupled signal of the first signal, the coupled signal of the second signal, the third signal, and the fourth signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a simplified block diagram of an exemplary electronic device.

[0008] Figure 2 Examples of Tx (transmit) links and Rx (receive) links are shown.

[0009] Figure 3 An example of a switch included in a radio frequency front end (RFFE) is shown.

[0010] Figure 4 An example of an attenuator is shown.

[0011] Figure 5 is a flow chart illustrating an exemplary method of obtaining a second signal based on a coupled signal from which a first signal is obtained.

[0012] Figure 6 An example of a state of a coupled signal of the first signal is shown.

[0013] Figure 7 is a flow chart illustrating an exemplary method of obtaining a coupled signal of a first signal based on obtaining a second signal.

[0014] Figure 8 is a flow chart illustrating an exemplary method for identifying the status of a radio frequency front end (RFIC) and a RFFE based on obtaining a coupled signal of a first signal and a second signal.

[0015] Figures 9 and 10 is a simplified block diagram of an exemplary electronic device.

[0016] Fig.11 is a simplified block diagram of an exemplary electronic device including two or more RFFEs.

[0017] Fig.12 is a block diagram of an electronic device in a network environment according to various embodiments. DETAILED DESCRIPTION

[0018] The electronic device may include a radio frequency integrated circuit (RFIC) (e.g., a radio frequency transceiver), a radio frequency front end (RFFE), and an antenna for communicating with an external electronic device. For example, the electronic device may use the RFIC and the RFFE to send a signal to the external electronic device. For example, the electronic device may use a mixer in the RFIC to set the frequency of the signal. For example, the electronic device may use a power amplifier (PA) in the RFFE to set the transmission power of the signal of the frequency. For example, the electronic device may use an antenna to send the signal of the frequency to the external electronic device at the transmission power.

[0019] At least a portion of the communication circuit including the RFIC and the RFFE may fail or operate abnormally. Such a failure of at least a portion of the communication circuit may cause damage to the communication circuit. For example, the electronic device may identify the state of the RFIC and the state of the RFFE in order to reduce the failure of at least some of the communication circuit and / or the damage to at least some other parts of the communication circuit.

[0020] Figure 1 is a simplified block diagram of an exemplary electronic device.

[0021] refer to Figure 1 , the electronic device 101 may include a processor 120, an RFIC 130, an RFFE 160 and an antenna 190.

[0022] For example, the electronic device 101 may include the following Fig.12 For example, the processor 120 may correspond at least in part to the components of the electronic device 1201 described below. Fig.12 For example, each of the RFIC 130 and the RFFE 160 may correspond at least in part to Fig.12 The wireless communication module 1292 and / or Fig.12 The antenna module 1297 in FIG. For example, the antenna 190 may include Fig.12 At least a portion of the antenna module 1297 in. However, the present disclosure is not limited thereto.

[0023] For example, the RFFE 160 may include a coupler 170 connected to the antenna 190. For example, the coupler 170 may be used to obtain a coupled signal as part of a signal transmitted through the antenna 190. For example, the RFFE 160 may include a power amplifier (PA) 161 connected to the coupler 170. For example, throughout this document, expressions such as "a first component and a second component are connected" may imply not only "the first component and the second component are directly connected" but also "the first component and the second component are connected via a third component". For example, the PA 161 may be connected to the coupler 170 through the duplexer 180. For example, the RFFE 160 may include the duplexer 180 between the PA 161 and the coupler 170.

[0024] For example, the PA 161 may be used to set the transmission power of a signal transmitted through the antenna 190. For example, the duplexer 180 may be used to distinguish a signal transmitted through the antenna 190 from another signal received through the antenna 190.

[0025] For example, the RFFE 160 may further include a low noise amplifier (LNA) 175. For example, the LNA 175 may be used to amplify the power of a signal received through the antenna 190.

[0026] For example, the RFIC 130 may include a Tx (transmit) link 135. For example, the RFIC 130 may include a local oscillator (LO) 140. For example, the Tx link 135 may include a mixer 136 connected to the LO 140. For example, a signal provided from the processor 120 may be up-converted by the mixer 136 connected to the LO 140. For example, the up-converted signal may be provided to the RFFE 160.

[0027] For example, the RFIC 130 may include an Rx (receive) link 145. For example, the Rx link 145 may include a mixer 146 connected to the LO 140. For example, a signal provided from the RFFE 160 may be down-converted by the mixer 146 connected to the LO 140. For example, the down-converted signal may be provided to the processor 120.

[0028] For example, the RFIC 130 may include a first switch 150. For example, the first switch 150 may be used to electrically connect the PA 161 or the Rx link 145 to the Tx link 135. For example, the first switch 150 may include a first terminal 150-1 connected to the Tx link 135, a second terminal 150-2 connected to the PA 161, and a third terminal 150-3 connected to the third terminal 155-3 of the second switch 155.

[0029] For example, the RFIC 130 may include a second switch 155. For example, the second switch 155 may be used to electrically connect the coupler 170 or the Tx link 135 to the Rx link 145. For example, the second switch 155 may include a first terminal 155-1 connected to the Rx link 145, a second terminal 155-2 connected to the coupler 170, and a third terminal 155-3 connected to the third terminal 150-3 of the first switch 150.

[0030] For example, the RFIC 130 may further include an Rx link 158. For example, the RFIC 130 may include an LO 199 different from the LO 140. For example, the RFIC 130 may include a mixer 159 connected to the LO 199. For example, a signal provided from the RFFE 160 may be down-converted by the mixer 159 connected to the LO 199. For example, the down-converted signal may be provided to the processor 120. For example, the Rx link 158 may be used to obtain a signal received through the antenna 190 and the LNA 175, which is different from the Rx link 145 for obtaining a coupled signal 192 of a first signal 191 to be described below.

[0031] Tx link 135, Rx link 145 and Rx link 158 are respectively Figure 2 Shown in.

[0032] Figure 2 Examples of Tx (transmit) links and Rx (receive) links are shown.

[0033] Reference Figure 2 , the Tx link 135 may further include a digital-to-analog converter (DAC) 201 and a PA 202. For example, the DAC 201 may be used to convert a digital signal input to the DAC 201 into an analog signal. For example, the mixer 136 connected to the LO 140 may be used to up-convert a signal input to the mixer 136. For example, the PA 202 may be used to amplify a signal input to the PA 202.

[0034] The Rx link 145 may also include an analog-to-digital converter (ADC) 203 and a PA 204. For example, the PA 204 may be used to amplify a signal input to the PA 204. For example, the mixer 146 connected to the LO 140 may be used to down-convert a signal input to the mixer 146. For example, the ADC 203 may be used to convert an analog signal input to the ADC 203 into a digital signal.

[0035] The Rx link 158 may also include an ADC 205 and a PA 206. For example, the PA 206 may be used to amplify a signal input to the PA 206. For example, the mixer 159 connected to the LO 199 may be used to down-convert a signal input to the mixer 159. For example, the ADC 205 may be used to convert an analog signal input to the ADC 205 into a digital signal.

[0036] Return to reference Figure 1 , RFFE 160 may include a switch instead of duplexer 180. Figure 3 Describe the switch.

[0037] Figure 3 An example of a switch included in an RFFE is shown.

[0038] Reference Figure 3 , the RFFE 160 may include a switch 300 instead of the duplexer 180. For example, when the RFFE 160 is an RFFE for frequency division duplexing (FDD), the RFFE 160 may include the duplexer 180. For example, when the RFFE 160 is an RFFE for time division duplexing (TDD), the RFFE 160 may include the switch 300. For example, the switch 300 may include a first terminal 301 connected to the PA 161, a second terminal 302 connected to the LNA 175, and a third terminal 303 connected to the coupler 170. For example, the switch 300 may be in a first state 304 electrically connecting the first terminal 301 and the third terminal 303 in a time resource in which a signal is transmitted through the antenna 190. For example, the switch 300 may be in a second state 305 electrically connecting the second terminal 302 and the third terminal 303 in a time resource in which a signal is received through the antenna 190.

[0039] Reference again Figure 1 In an embodiment, the processor 120 may perform an operation for identifying the status of at least a portion of the RFIC 130 and at least a portion of the RFFE 160 based on control of the first switch 150 and / or the second switch 155.

[0040] For example, based on electrically connecting the PA 161 and the Tx link 135 through the first switch 150 and electrically connecting the coupler 170 and the Rx link 145 through the second switch 155, the processor 120 may transmit the first signal 191 obtained through the Tx link 135 at a power set using the PA 161 through the antenna 190. For example, the first signal 191 may be transmitted to an external electronic device through the antenna 190. For example, a coupled signal 192 of the first signal 191 may be a portion of the first signal 191 transmitted through the antenna 190. For example, the connection between the PA 161 and the Tx link 135 may be formed by a state 151 of the first switch 150 that electrically connects the second terminal 150-2 of the first switch 150 among the second terminal 150-2 and the third terminal 150-3 of the first switch 150 to the first terminal 150-1 of the first switch 150. For example, the connection between the coupler 170 and the Rx link 145 may be formed by a state 156 of the second switch 155 that electrically connects the second terminal 155 - 2 of the second switch 155 and the third terminal 155 - 3 of the second switch 155 to the first terminal 155 - 1 of the second switch 155 .

[0041] For example, the processor 120 may obtain the second signal 193 obtained through the Tx link 135 via the Rx link 145 based on connecting the Tx link 135 electrically disconnected from the PA 161 and the Rx link 145 electrically disconnected from the coupler 170 via the first switch 150 and the second switch 155 .

[0042] For example, the processor 120 can electrically disconnect the Tx link 135 from the PA 161 based on changing the state of the first switch 150 from state 151 to state 152, electrically disconnect the Rx link 145 from the coupler 170 based on changing the state of the second switch 150 from state 156 to state 157, and electrically connect the Tx link 135 and the Rx link 145 through the first switch 150 in state 152 and the second switch 155 in state 157. For example, the electrical connection between the Tx link 135 and the Rx link 145 can be formed by the state 152 of the first switch 150 and the state 157 of the second switch 155, wherein the state 152 of the first switch 150 connects the third terminal 150-3 of the first switch 150 among the second terminal 150-2 of the first switch 150 and the third terminal 150-3 of the first switch 150 to the first terminal 150-1 of the first switch 150, and the state 157 of the second switch 155 connects the third terminal 155-3 of the second switch 155 among the second terminal 155-2 of the second switch 155 and the third terminal 155-3 of the second switch 155 to the first terminal 150-1 of the second switch 155.

[0043] For example, the processor 120 may identify a state of the RFFE 160 and a state of the RFIC 130 based at least in part on the coupled signal 192 of the first signal 191 and the second signal 193 .

[0044] For example, since the coupled signal 192 of the first signal 191 is a portion of the first signal 191 transmitted through the Tx link 135 and the PA 161, the coupled signal 192 of the first signal 191 may indicate the states of the transmission path of the first signal 191 and the reception path of the coupled signal 192. For example, the coupled signal 192 of the first signal 191 may indicate the state of the Tx link 135 and the state of the PA 161. For example, the coupled signal 192 of the first signal 191 indicating the state of the Tx link 135 and the state of the PA 161 may indicate that the coupled signal 192 of the first signal 191 may be used to obtain information about the state of the Tx link 135 and the state of the PA 161. For example, the coupled signal 192 of the first signal 191 may indicate the state of the Rx link 145. For example, the coupled signal 192 of the first signal 191 indicating the state of the Rx link 145 may indicate that the coupled signal 192 of the first signal 191 may be used to obtain information about the state of the Rx link 145.

[0045] For example, since the second signal 193 is generated through the Tx link 135 and obtained through the Rx link 145, the second signal 193 may indicate the state of the RFIC 130 among the RFIC 130 and the RFFE 160. For example, since the second signal 193 does not pass through the RFFE 160, the second signal 193 may indicate the state of the Tx link 135 among the state of the PA 161. For example, since the second signal 193 does not pass through the RFFE 160, the second signal 193 may indicate the state of the Rx link 145.

[0046] For example, since the coupled signal 192 of the first signal 191 indicates both the state of the Tx link 135 and the state of the PA 161, and the second signal 193 only indicates the state of the Tx link 135 and the state of the Tx link 135 in the PA 161, the processor 120 can identify the state of the RFFE 160 and the state of the RFIC 130 based on the coupled signal 192 of the first signal 191 and the second signal 193.

[0047] For example, the processor 120 may recognize that the state of the Tx link 135 (or the state of at least a portion of the RFIC 130 related to the transmission of the first signal 191 and the reception of the coupled signal 192 of the first signal 191) and the state of the PA 161 (or the state of at least a portion of the RFFE 160 related to the transmission of the first signal 191) are in a normal operating state based on the coupled signal 192 of the first signal 191 being in a first reference state. For example, the coupled signal 192 of the first signal 191 being in the first reference state may indicate that the first signal 191 is transmitted at a target frequency through the antenna 190 with a target transmission power. Figure 6 The description of the coupled signal 192 of the first signal 191 in the first reference state is used to describe. For example, the Tx link 135 and the PA 161 being in a normal operation state may indicate that the Tx link 135 and the PA 161 are in a state capable of transmitting a signal at a target frequency at a target transmission power through the antenna 190.

[0048] For example, based on the coupled signal 192 being in a state different from the first reference state, the processor 120 may recognize that the state of the Tx link 135 (or the state of at least a portion of the RFIC 130 related to the transmission of the first signal 191 and the reception of the coupled signal 192 of the first signal 191) and / or the state of the PA 161 (or the state of at least a portion of the RFFE 160 related to the transmission of the first signal 191) is different from the normal operating state. For example, the coupled signal 192 of the first signal 191 being in a state different from the first reference state may indicate that: the first signal 191 is transmitted through the antenna 190 at a frequency different from the target frequency, the first signal 191 is transmitted through the antenna 190 at a transmission power different from the target transmission power, or the first signal 191 is transmitted through the antenna 190 at a frequency different from the target frequency at a transmission power different from the target transmission power. Figure 6 1 to illustrate a coupled signal 192 of a first signal 191 in a state different from a first reference state. For example, the Tx link 135 being in a state different from a normal operating state (e.g., a fault state or an abnormal operating state) may indicate that the Tx link 135 is in a state of recognizing or providing a frequency different from a target frequency. For example, the Tx link 135 obtaining a signal of a frequency different from the target frequency and transmitting the signal to the PA 161 may cause damage to the PA 161. For example, the Tx link 135 being in a state different from the normal operating state may indicate that the Tx link 135 is in a state that may cause damage to the PA 161. For example, the PA 161 being in a state different from the normal operating state may indicate that the PA 161 is in a state of setting a transmission power different from a target transmission power.

[0049] For example, the processor 120 may recognize that the state of the Tx link 135 is a normal operating state based on the second signal 193 being in the second reference state. For example, the second signal 193 being in the second reference state may indicate a target (or desired) state related to the transmission of the first signal 191. For example, the second signal 193 being in the second reference state may indicate that the state of the Tx link 135 is a normal operating state. For example, since the second signal 193 does not pass through the RFFE 160, the processor 120 may recognize that the state of the Tx link 135 is a normal operating state based on the second signal 193 being in the second reference state.

[0050] For example, the processor 120 may recognize that the state of the Tx link 135 is different from the normal operation state based on the second signal 193 being in a state different from the second reference state. For example, since the second signal 193 does not pass through the RFFE 160, the processor 120 may recognize that the state of the Tx link 135 is different from the normal operation state based on the second signal 193 being in a state different from the second reference state.

[0051] For example, the processor 120 can identify that the state of at least a portion of the RFFE 160 related to the transmission of the first signal 191 is different from the normal operating state based on the coupled signal 192 of the first signal 191 being in a state different from the first reference state and the second signal 193 being in a second reference state.

[0052] For example, the processor 120 may identify the state of at least a portion of the RFIC 130 related to sending the first signal 191 and obtaining the second signal 193 based on the coupled signal 192 of the first signal 191 being in a state different from the first reference state and the second signal 193 being in a state different from the second reference state. For example, the processor 120 may identify that the state of at least a portion of the RFIC 130 and / or at least a portion of the RFFE 160 is different from the normal operating state based on the coupled signal 192 of the first signal 191 being in a state different from the first reference state and the second signal 193 being in a state different from the second reference state.

[0053] For example, the electronic device 101 may further include an attenuator ( Figure 1 (not explicitly shown) in order to reduce damage to at least a portion of the RX link 145 due to the strength of the second signal 193. Figure 4 The attenuator will be described.

[0054] Figure 4 An example of an attenuator according to an embodiment is shown.

[0055] refer to Figure 4 , the RFIC 130 may include an attenuator 400 in a connection path between the third terminal 150-3 of the first switch 150 and the third terminal 155-3 of the second switch 155. For example, the processor 120 may obtain the second signal 193 with reduced power through the Rx link 145 via the attenuator 400 based on electrically connecting the Tx link 135 and the Rx link 145 through the first switch 150 and the second switch 155. For example, the reduced power may be recognized under the control of the processor 120. For example, the second signal 193 passing through the attenuator 400 may reduce damage to the Rx link 145 due to the strength of the second signal 193.

[0056] Figure 4 An example in which the attenuator 400 includes a variable resistor is shown, but this is only for ease of description. For example, the attenuator 400 may further include a field effect transistor (FET), a resistor, an inductor, a capacitor, and / or a bias port. However, the present disclosure is not limited thereto.

[0057] For example, obtaining the coupled signal 192 of the first signal 191 and obtaining the second signal 193 may be implemented in various ways.

[0058] For example, after obtaining the coupled signal 192 of the first signal 191, the processor 120 may obtain the second signal 193. Figure 5 The acquisition of the second signal 193 based on the coupled signal 192 of the first signal 191 is further described.

[0059] Figure 5 is a flow chart illustrating an exemplary method of obtaining a second signal based on a coupled signal from which a first signal is obtained.

[0060] refer to Figure 5 In operation 501, the processor 120 may obtain a coupled signal 192 of a first signal 191. For example, the coupled signal 192 of the first signal 191 may be obtained through the Rx link 145.

[0061] In operation 503, the processor 120 may identify whether the state of the coupled signal 192 of the first signal 191 is in the first reference state. For example, the processor 120 may identify whether the state of the coupled signal 192 of the first signal 191 is in the first reference state based on comparing the reference information with the information indicating the quality of the coupled signal 192 of the first signal 191. For example, the information may be obtained based on identifying an adjacent channel power ratio (ACPR), an adjacent channel leakage ratio (ACLR), or an error vector magnitude (EVM) of the coupled signal 192 of the first signal 191. For example, the reference information may be a parameter for identifying the state of the coupled signal 192 of the first signal 191. For example, the reference information may be compared with the information to be transmitted through Figure 6 For example, the processor 120 may identify whether the state of the coupled signal 192 of the first signal 191 is the first reference state based on the difference between the reference information and the information. Figure 6 The state of the coupled signal 192 of the first signal 191 is described.

[0062] Figure 6 An example of a state of a coupled signal of the first signal is shown.

[0063] refer to Figure 6 , the horizontal axis of each of the graphs 600 and 630 represents frequency, and the vertical axis of each of the graphs 600 and 630 represents the strength of the coupled signal 192 of the first signal 191. For example, the range 610 of each of the graphs 600 and 630 indicates the target frequency range (or the desired frequency range) of the first signal 191 (or the coupled signal 192 of the first signal 191), and the ranges 620 and 625 of each of the graphs 600 and 630 indicate the frequency range outside the target frequency range. For example, as shown in the graph 600, the processor 120 can recognize that the state of the coupled signal 192 of the first signal 191 is in the first reference state based on recognizing that the difference 615 between the strength of the coupled signal 192 of the first signal 191 within the range 610 and the strength of the coupled signal 192 of the first signal 191 within the range 620 and 625 is greater than or equal to the threshold. For example, as shown in graph 630 , processor 120 may recognize that the state of coupled signal 192 of first signal 191 is different from the first reference state based on recognizing that difference 615 is less than a threshold value. However, the present disclosure is not limited thereto.

[0064] Each horizontal axis of the graph 660 and the graph 690 represents an in-phase component, and each vertical axis of the graph 660 and the graph 690 represents an orthogonal phase component. For example, the processor 120 may identify that the coupled signal 192 of the first signal 191 is in a first reference state based on identifying that the coupled signal 192 of the first signal 191 is in a state indicated by the graph 660. For example, the processor 120 may identify that the state of the coupled signal 192 of the first signal 191 is different from the first reference state based on identifying that the coupled signal 192 of the first signal 191 is in a state indicated by the graph 690. However, the present disclosure is not limited to this. Although the identification has been described for whether the coupled signal 192 is in the first reference state, the above example may be applied in an equivalent manner for whether the second signal 193 is in the second reference state.

[0065] Return to reference Figure 5, the processor 120 may perform operation 505 based on the coupled signal 192 of the first signal 191 being in the first reference state, and perform operation 507 based on the coupled signal 192 of the first signal 191 being in a state different from the first reference state.

[0066] In operation 505, under the condition that the state of the coupled signal 192 of the first signal 191 is in the first reference state, the processor 120 may maintain the electrical connection between the PA 161 and the Tx link 135 through the first switch 150 and maintain the electrical connection between the coupler 170 and the Rx link 145 through the second switch 155. For example, the state of the coupled signal 192 of the first signal 191 being in the first reference state indicates that at least a portion of the RFIC 130 and at least a portion of the RFFE 160 for transmission of the first signal 191 are in a normal operating state, and therefore, the processor 120 may maintain the electrical connection between the PA 161 and the Tx link 135 through the first switch 150, and maintain the electrical connection between the coupler 170 and the Rx link 145 through the second switch 155 for signals subsequent to the transmission of the first signal 191. For example, the processor 120 may inhibit electrically disconnecting the Tx link 135 from the PA 161 through the first switch 150 , electrically disconnecting the Rx link 145 from the coupler 170 through the second switch 155 , and electrically connecting the Tx link 135 and the Rx link 145 through the first and second switches 150 and 155 .

[0067] In operation 507 , the processor 120 may electrically disconnect the Tx link 135 from the PA 161 through the first switch 150 , electrically disconnect the Rx link 140 from the coupler 170 through the second switch 155 , and electrically connect the Tx link 135 and the Rx link 140 through the first and second switches 150 , 155 . For example, a state of the coupled signal 192 of the first signal 191 being different from the first reference state indicates that a state of at least a portion of the RFIC 130 and / or at least a portion of the RFFE 160 is different from a normal operating state, and therefore, in order to identify a component among at least a portion of the RFIC 130 and at least a portion of the RFFE 160 that is operating in a state different from a normal operating state (e.g., at least a portion of the RFIC 130 and / or at least a portion of the RFFE 160), the processor 120 may electrically separate the RFFE 160 from each of the Tx link 135 and the Rx link 145 in the RFIC 130 by electrically disconnecting the Tx link 135 from the PA 161 through the first switch 155, electrically disconnecting the Rx link 140 from the coupler 170 through the second switch 155, and electrically connecting the Tx link 135 and the Rx link 140 through the first switch 150 and the second switch 155.

[0068] In operation 509, the processor 120 may obtain the second signal 193 obtained through the Tx link 135 through the Rx link 145 via the first switch 150 in the state 152 and the second switch 155 in the state 157. Figure 5 Although not shown in the figure, the processor 120 can identify whether the state of at least a part of the RFIC 130 related to the transmission of the first signal 191 is in a normal operating state based on the second signal 193.

[0069] As described above, the electronic device 101 may obtain the second signal 193 according to the state of the coupled signal 192 of the first signal 191. For example, the electronic device 101 may obtain the second signal 193 in response to the coupled signal 192 of the first signal 191 being different from the first reference state, and identify whether at least a portion of the RFIC 130 related to the transmission of the first signal 191 is in a normal operating state based on the second signal 193. For example, the electronic device 101 may identify whether the component related to the transmission of the first signal 191 that is in failure is at least a portion of the RFIC 130 related to the transmission of the first signal 191 or at least a portion of the RFFE 160 related to the transmission of the signal 191.

[0070] Return to reference again Figure 1 In an embodiment, the processor 120 may obtain the coupled signal 192 of the first signal 191 by sending the first signal 191 after obtaining the second signal 193. Figure 7 It is described that a coupled signal 192 of the first signal 191 is obtained after the second signal 193 is obtained.

[0071] Figure 7 is a flow chart illustrating an exemplary method of obtaining a coupled signal of a first signal based on obtaining a second signal.

[0072] refer to Figure 7 , in operation 701, the processor 120 may obtain the second signal 193. For example, the processor 120 may use the first switch 150 in state 152 and the second switch 155 in state 157 to obtain the second signal 193. For example, operation 701 may be performed before the first signal 191 is transmitted. For example, the processor 120 may obtain the second signal 193 in a second time resource in a time slot before the first time resource in the time slot in which the first signal 191 is transmitted. However, the present disclosure is not limited thereto. For example, the processor 120 may obtain the second signal 193 in another time slot before the time slot in which the first signal 191 is transmitted.

[0073] In operation 702, the processor 120 may identify whether the second signal 193 is in a second reference state based at least in part on obtaining the second signal 193. For example, the processor 120 may perform operation 703 in response to the second signal 193 being in the second reference state, and perform operation 705 in response to the second signal 193 being in a state different from the second reference state.

[0074] In operation 703, in response to the second signal 193 being in the second reference state, the processor 120 may obtain the coupling signal 192 of the first signal 191 by transmitting the first signal 191. For example, the processor 120 may transmit the first signal 191 based on changing the state of the first switch 150 from state 152 to state 151 and changing the state of the second switch 155 from state 157 to state 156 in response to the second signal 193 being in the second reference state. The processor 120 may obtain the coupling signal 192 of the first signal 191 based on the transmission of the first signal 191. The processor 120 may identify whether the coupling signal 192 of the first signal 191 is in the first reference state.

[0075] In operation 705, in response to the second signal 193 being in a state different from the second reference state, the processor 120 may stop sending the first signal 191. For example, in response to the second signal 193 being in a state different from the second reference state, the processor 120 may bypass, postpone, or inhibit sending the first signal 191. For example, the processor 120 may reset at least a portion of the RFIC 130 for obtaining the second signal 193 based on the second signal 193 being in a state different from the second reference state, or suspend or postpone use of the at least a portion of the RFIC 130 for a preset time. For example, the processor 120 may stop sending the first signal 191 in response to the second signal 193 being in a state different from the second reference state, and reset at least a portion of the RFIC 130 for obtaining the second signal 193 (e.g., the Tx link 135 and / or the Rx link 145). For example, the processor 120 may stop sending the first signal 191 in response to the second signal 193 being in a state different from the second reference state, and stop or postpone the use of at least a portion of the RFIC 130 (e.g., the Tx link 135 and / or the Rx link 145) for a predetermined time. For example, the processor 120 may use other components ( Figure 1 (not shown) to perform the transmission of the first signal 191. However, the present disclosure is not limited thereto.

[0076] As described above, the electronic device 101 can identify whether to send the first signal 191 based on the second signal 193 after obtaining the second signal 193, thereby reducing damage to at least a portion of the RFIC 130 related to the transmission of the first signal 191 or damage to at least a portion of the RFFE 160 due to a failure of at least a portion of the RFIC 130.

[0077] Return to reference again Figure 1 In an embodiment, the processor 120 may obtain the second signal 193 based on electrically connecting the Tx link 135 and the Rx link 145 through the first switch 150 and the second switch 155 in response to obtaining the coupling signal 192 of the first signal 191. For example, the processor 120 may obtain the second signal 193 immediately after obtaining the coupling signal 192 of the first signal 191, independently of whether the coupling signal 192 of the first signal 191 is in the first reference state. For example, obtaining the second signal 193 may be performed based on a preset period. For example, in response to the allocation or scheduling of transmissions through the Tx link 135, the PA 161, and the antenna 190, obtaining the second signal 193 may be initiated and periodically performed. However, the present disclosure is not limited thereto.

[0078] In an embodiment, the processor 120 may identify any component of the electronic device 101 that is in failure in at least a portion of the RFIC 130 and at least a portion of the RFFE 160 associated with the transmission of the first signal 191 based on the coupled signal 192 and the second signal 193 of the first signal 191. Figure 8 Describe the above identification.

[0079] Figure 8 is a flow chart illustrating an exemplary method for identifying the status of an RFIC and an RFFE based on obtaining a coupled signal of a first signal and a second signal.

[0080] refer to Figure 8 In operation 801, the processor 120 may obtain a coupled signal 192 and a second signal 193 of the first signal 191. For example, the processor 120 may transmit the first signal 191 and obtain the coupled signal 192 of the first signal 191 based on setting the state of the first switch 150 to state 151 and setting the state of the second switch 155 to state 156. For example, the processor 120 may obtain the second signal 193 based on setting the state of the first switch 150 to state 152 and setting the state of the second switch 155 to state 157.

[0081] In operation 803, the processor 120 may identify whether the state of the coupled signal 192 of the first signal 191 is in the first reference state. For example, the processor 120 may perform operation 805 based on the coupled signal 192 of the first signal 191 being in the first reference state, and perform operation 807 based on the coupled signal 192 of the first signal 191 being in a state different from the first reference state.

[0082] In operation 805, the processor 120 may recognize that the state of at least a portion of the RFIC 130 and the RFFE 160 related to the transmission of the first signal 191 is in a normal operating state based on recognizing that the state of the coupled signal 192 of the first signal 191 is in a first reference state. For example, the state of the coupled signal 192 of the first signal 191 being in the first reference state indicates that the transmission path of the electronic device 101 for transmitting the first signal 191 is in a normal operating state, and therefore, the processor 120 may recognize that the states of the Tx link 135, the Rx link 145, and the PA 161 are in a normal state based on the coupled signal 192 of the first signal 191 being in the first reference state.

[0083] In operation 807, the processor 120 may identify whether the state of the second signal 193 is in the second reference state based on identifying that the state of the coupled signal 192 of the first signal 191 is different from the first reference state. For example, the processor 120 may perform operation 809 based on the second signal 193 being in the second reference state, and perform operation 811 based on the second signal 193 being in a state different from the second reference state.

[0084] Figure 8 An example of performing operation 807 based on operation 803 is shown, but this is only for ease of description. Figure 8 At least a portion of operation 803 and at least a portion of operation 807 may be performed in parallel, but the present disclosure is not limited thereto.

[0085] In operation 809, the processor 120 may recognize that the state of at least a portion of the RFFE 160 related to the transmission of the first signal 191 is different from the normal operation state based on recognizing that the state of the second signal 193 is in the second reference state. For example, the state of the second signal 193 being in the second reference state indicates that the state of at least a portion of the RFIC 130 related to the transmission of the first signal 191 is in the normal operation state, and thus the processor 120 may recognize that the state of the RFFE 160 related to the transmission of the first signal 191 is different from the normal operation state based on recognizing that the state of the second signal 193 is in the second reference state. For example, the processor 120 may recognize that the state of the PA 161 is different from the normal operation state based on the coupled signal 192 of the first signal 191 being in a state different from the first reference state and the second signal 193 being in the second reference state. For example, the processor 120 may reset at least a portion of the RFFE 160 related to the transmission of the first signal 191 based on the recognition. For example, the processor 120 may reset the PA 161 based on the recognition. However, the present disclosure is not limited thereto.

[0086] In operation 811, the processor 120 may recognize that the state of at least a portion of the RFIC 130 related to the transmission of the first signal 191 is different from the normal operation state based on recognizing that the state of the second signal 193 is different from the second reference state. For example, the state of the second signal 193 being different from the second reference state indicates that the state of at least a portion of the RFIC 130 related to the transmission of the first signal 191 is different from the normal operation state and the state of at least a portion of the RFIC 160 related to the transmission of the first signal 191 is different from the normal operation state, and therefore, before the processor 120 recognizes that the state of at least a portion of the RFIC 160 is different from the normal operation state, the processor 120 may recognize that the state of at least a portion of the RFIC 130 is different from the normal operation state. For example, the processor 120 may reset at least a portion of the RFIC 130 related to the transmission of the first signal 191 based on the coupling signal 192 of the first signal 191 being in a state different from the first reference state and the second signal 193 being in a state different from the second reference state. For example, the processor 120 may reset the Tx link 135 based on the recognition. However, the present disclosure is not limited thereto.

[0087] although Figure 8Although not shown in the figure, the processor 120 may send a signal subsequent to the first signal 191 through the first switch 150 in state 151 and the second switch 155 in state 156 after resetting at least a portion of the RFIC 130, and obtain a coupling signal of the signal. In response to obtaining the coupling signal of the signal, the processor 120 may identify whether the state of the coupling signal of the signal is in a first reference state. For example, the processor 120 may reset the at least a portion of the RFFE 160 based on the coupling signal of the signal being in a state different from the first reference state. However, the present disclosure is not limited thereto.

[0088] As described above, the electronic device 101 can identify any faulty components in the components of the electronic device 101 used to send the first signal 191 by obtaining the coupled signal 192 of the first signal 191 and obtaining the second signal 193. For example, the electronic device 101 can use this identification to enhance the quality of communication through the electronic device 101.

[0089] The above example describes that the electronic device 101 includes the first switch 150 and the second switch 155 in the RFIC 130 to obtain the second signal 193, but this is only for the convenience of explanation. For example, the first switch 150 and the second switch 155 may be located outside the RFIC 130. For example, the first switch 150 and the second switch 155 may be set between the RFIC 130 and the RFFE 160. For example, the first switch 150 and / or the second switch 155 may be replaced by other components. For example, the electronic device 101 may be in other designs and references. Figure 1 The illustrated design includes components for obtaining the second signal 193 in different cases. Figures 9 and 10 Describe another design.

[0090] Figures 9 and 10 is a simplified block diagram of an exemplary electronic device.

[0091] Reference Fig. 9 , the electronic device 101 may include a coupler 900 instead of the first switch 150. For example, the coupler 900 may be provided between the Tx link 135 and the PA 161. Figure 1 Additional examples and diagrams of electronic devices and subsequent Figures 2 to 8 And the description of it can also be applied to Fig. 9 and Fig.10 , and repeated description is avoided only for the sake of brevity.

[0092] In an embodiment, the processor 120 may execute sending a first signal 191 through the coupler 900 and the second switch 155 , obtaining a coupled signal 192 of the first signal 191 , and obtaining a second signal 193 , wherein the second signal 193 is a coupled signal of the first signal 191 obtained through the coupler 900 .

[0093] For example, the processor 120 may send the first signal 191 through the Tx link 135, the PA 161, and the antenna 190 based on setting the state of the second switch 155 to the state 156, and obtain the coupled signal 192 of the first signal 191 through the Rx link 145. For example, the processor 120 may perform the operations shown above for the coupled signal 192 of the first signal 191.

[0094] For example, in response to setting the state of the second switch 155 to the state 157, the processor 120 may obtain a second signal 193 through the Rx link 145, wherein the second signal 193 is a coupled signal of the first signal 191 obtained through the coupler 900. For example, since the second signal 193 is a signal obtained through the coupler 900, it may indicate the state of the Tx link 135, contrary to the coupled signal 192 of the first signal 191. For example, the processor 120 may perform the operations shown above with respect to the second signal 193.

[0095] As described above, the electronic device 101 may obtain the second signal 193 by including the coupler 900 instead of the first switch 150 .

[0096] refer to Fig.10 , the electronic device 101 may include the first switch 1000 and the second switch 1050 instead of the first switch 150 and the second switch 155. Optionally, for example, the first switch 1000 and the second switch 1050 may be included in the RFFE 160, different from the one described for Figure 1 The disclosed first switch 150 and the second switch 155. For example, according to an embodiment, the first switch 1000 may be arranged inside the RFIC 130 or outside the RFIC 130 and the RFFE 160.

[0097] For example, the first switch 1000 may include a first terminal 1011 connected to the Tx link 135, a second terminal 1012 connected to the PA 161, and a third terminal 1013 connected to the third terminal 1063 of the second switch 1050. For example, the second switch 1050 may include a first terminal 1061 connected to the coupler 170, a second terminal 1602 connected to the PA 161, and a third terminal 1603 connected to the third terminal 1013 of the first switch 1000.

[0098] For example, based on electrically connecting the Tx link 135 to the PA 161 through the first switch 1000 and electrically connecting the PA 161 to the coupler 170 (or the antenna 190) through the second switch 1050, the processor 120 may transmit the first signal 191 obtained through the Tx link 135 via the antenna 190 at a power set using the PA 161, and obtain a coupled signal 192 of the first signal 191 through the Rx link 145. For example, the electrical connection between the Tx link 135 and the PA 161 through the first switch 1000 may be formed by electrically connecting the second terminal 1012 of the first switch 1000 among the second terminal 1012 of the first switch 1000 and the third terminal 1013 of the first switch 1000 to the first terminal 1011 of the first switch 1000. For example, the electrical connection between the Tx link 135 and the PA 161 may be provided by the first switch 1000 in the state 1001. For example, the electrical connection between the PA 161 and the coupler 170 through the second switch 1050 may be formed by electrically connecting the second terminal 1062 of the second switch 1050 and the third terminal 1053 of the second switch 1050 to the first terminal 1062 of the second switch 1050. For example, the electrical connection between the PA 161 and the coupler 170 may be provided by the second switch 1050 in the state 1051.

[0099] For example, the processor 120 may transmit the second signal 1093 obtained through the Tx link 135 via the antenna 190, and obtain a coupled signal 1094 of the second signal 1093 through the Rx link 145 based on electrically connecting the Tx link 135 electrically disconnected from the PA 161 through the first switch 1000 and the second switch 1050 and the coupler 170 electrically disconnected from the PA 161. For example, the electrical connection between the Tx link 135 and the coupler 170 through the first switch 1000 and the second switch 1050 may be established by electrically connecting the third terminal 1013 of the first switch 1000 from among the second terminal 1012 of the first switch 1000 and the third terminal 1013 of the first switch 1000 to the first terminal 1011 of the first switch 1000 and electrically connecting the third terminal 1063 of the second switch 1050 from among the second terminal 1062 of the second switch 1050 and the third terminal 1063 of the second switch 1050 to the first terminal 1061 of the second switch 1050. For example, the electrical connection between the Tx link 135 and the coupler 170 may be provided by the first switch 1000 in state 1002 and the second switch 1050 in state 1052 .

[0100] For example, the processor 120 may identify the state of the RFFE 160 and the state of the RFIC 130 based on the coupled signal 192 of the first signal 191 and the coupled signal 1094 of the second signal 1093 .

[0101] For example, since the coupled signal 192 is a portion of the first signal 191 transmitted through the Tx link 135 and the PA 161, the coupled signal 192 may indicate the status of the transmission path of the first signal 191 and the reception path of the coupled signal 192. For example, the coupled signal 192 may indicate the status of the Tx link 135 and the status of the PA 161. For example, the coupled signal 192 may indicate the status of the Rx link 145.

[0102] For example, since the coupling signal 1094 is generated through the Tx link 135 and obtained through the Rx link 145, the coupling signal 1094 may indicate the state of the RFIC 130 among the RFIC 130 and the RFFE 160. For example, since the coupling signal 1094 does not pass through the PA 161, the coupling signal 1094 may indicate the state of the Tx link 135 and the state of the Tx link 135 among the state of the PA 161. For example, since the coupling signal 1094 does not pass through the PA 161, the coupling signal 1094 may indicate the state of the Rx link 145. For example, since the coupling signal 192 indicates both the state of the Tx link 135 and the state of the PA 161, and the coupling signal 1094 only indicates the state of the Tx link 135 among the Tx link 135 and the PA 161, the processor 120 may identify the state of the RFFE 160 and the state of the RFIC 130 based on the coupling signal 192 and the coupling signal 1094. For example, the processor 120 may Figures 1 to 8 1094. For example, the processor 120 may perform reference processing on the coupled signal 192. Figures 1 to 8 The operations shown for processing the coupled signal 192 to identify the state of the RFIC 130 and / or the RFFE 160, and reference may be performed on the coupled signal 1094. Figures 1 to 8 Operations are shown for processing the second signal 193 to identify the state of the RFIC 130 and / or RFFE 160.

[0103] According to an embodiment, the electronic device 101 may include a component for transmitting a signal through two or more antennas. The electronic device 101 may include a component for transmitting two or more signals simultaneously. For example, the electronic device 101 may include two or more RFFEs to support carrier aggregation and / or dual connectivity. For example, referring to Fig.11 An electronic device 101 is described that includes two or more RFFEs.

[0104] Fig.11 is a simplified block diagram of an exemplary electronic device including two or more RFFEs.

[0105] refer to Fig.11 , the electronic device 101 may include a first antenna 1190 - 1 .

[0106] The electronic device 101 may include a processor 120 .

[0107] The electronic device 101 may include a first RFFE 1160-1 including a coupler 1170-1 connected to a first antenna 1190-1 and a power amplifier 1161-1 connected to the coupler 1170-1.

[0108] The first RFFE 1160 - 1 may include a duplexer 1180 - 1 (or switch 300 ).

[0109] The electronic device 101 may include a second antenna 1190 - 2 .

[0110] The electronic device 101 may include a second RFFE 1160-2 including a coupler 1170-2 connected to a second antenna 1190-2 and a PA 1161-2 connected to the coupler 1170-2, wherein the coupler 1170-2 is connected to the second antenna 1190-2. The second RFFE 1160-2 may include a duplexer 1180-2 (or a switch 300).

[0111] The electronic device 101 may include a radio frequency integrated circuit (RFIC) 1130, the RFIC 1130 including a first local oscillator (LO) 1140-1, a second LO 1140-2, a first Tx (transmit) link 1135-1 including a mixer 1136-1 connectable to a first LO 1140-1 of the first LO 1140-1 and a second LO 1140-2, a second Tx link 1135-2 including a mixer 1136-2 connectable to a second LO (1140-2) of the first LO 1140-1 and the second LO 1140-2, an Rx (receive) link 1145 including a mixer 1146 connectable to the first LO 1140-1 or the second LO 1140-2, and a PA 1161-1 for connecting the first RFFE 1160-1 or the Rx link 1145 to the first Tx link 1135-1 or the second RFFE 1160-2. A first switch 1150 for connecting the PA 1161-2 or the Rx link 1145 of 1160-2 to the second Tx link 1135-2, a second switch 1155 for connecting the coupler 1170-1 of the first RFFE 1160-1 or the first Tx link 1135-1 to the Rx link 1145 or connecting the coupler 1170-2 or the second Tx link 1135-2 of the second RFFE 1160-2 to the Rx link 1145, and a third switch 1157 for connecting the first LO 1140-1 to the mixer 1136-1 of the first Tx link 1135-1, connecting the second LO 1140-2 to the mixer 1136-2 of the second Tx link 1135-2, or connecting the first LO 1140-1 or the second LO 1140-2 to the mixer 146 of the Rx link 1145. In an embodiment, the RFIC 1130 may further include an attenuator 1117 between the first switch 1150 and the second switch 1155, such as Figure 4 Attenuator 400.

[0112] For example, in a case where the first LO 1140-1 is electrically connected to the mixer 1136-1 of the first Tx link 1157 through the third switch 1157, the processor 120 may transmit the first signal 1111 obtained through the first Tx link 1135-1 via the first antenna 1190-1 at a power set using the PA 1161-1 of the first RFFE 1160-1 based on the PA 1161-1 of the first RFFE 1160-1 and the first Tx link 1135-1 being electrically connected through the first switch 1150. For example, the processor 120 may transmit the first signal 1111 through the first antenna 1190-1 via the third switch 1157 in the state 1157-1 and the first switch 1150 in the state 1150-1.

[0113] For example, in a case where the first LO 1140-1 is connected to the mixer 1146 of the Rx link 1145 through the third switch 1157, the processor 120 may obtain a coupled signal 1112 of the first signal 1111 through the Rx link 1145 based on the coupler 1170-1 of the first RFFE 1160-1 and the Rx link 1145 being electrically connected through the second switch 1155. For example, the processor 120 may obtain the coupled signal 1112 of the first signal 1111 through the third switch 1157 in the state 1157-2 and the second switch 1155 in the state 1155-1.

[0114] For example, in a case where the second LO 1140-2 is electrically connected to the mixer 1136-2 of the second Tx link 1157 through the third switch 1157, based on electrically connecting the PA 1161-2 of the second RFFE 1160-2 to the second Tx link 1135-2 through the first switch 1150, the processor 120 may transmit the second signal 1113 obtained through the second Tx link 1135-2 via the second antenna 1190-2 with the power set using the PA 1161-2 of the second RFFE 1160-1. For example, the second signal 1113 may be transmitted through the second antenna 1190-2, while the first signal 1111 may be transmitted through the first antenna 1190-1. For example, the processor 120 may transmit the second signal 1113 through the antenna 1190-2 via the third switch 1157 in the state 1157-3 and the first switch 1150 in the state 1155-2.

[0115] For example, in a case where the second LO 1140-2 is electrically connected to the mixer 1146 of the Rx link 1145 through the third switch 1157, the processor 120 may obtain a coupled signal 1114 of the second signal 1113 through the Rx link 1145 based on the coupler 1170-2 and the Rx link 1145 being electrically connected through the second switch 1155. For example, the processor 120 may obtain the coupled signal 1114 of the second signal 1113 through the third switch 1157 in the state 1157-4 and the second switch 1155 in the state 1155-2.

[0116] For example, based on the first Tx link 1135-1 electrically disconnected from the PA 1161-1 of the first RFFE 1160-1 and the Rx link 1145 electrically disconnected from the coupler 1170-1 of the first RFFE 1160-1 connected through the first switch 1155 and the second switch 1155, the processor 120 can obtain a third signal 1115, wherein the third signal 1115 is obtained through the first Tx link 1135-1 when the first LO 1140-1 is electrically connected to the mixer 1136-1 of the first Tx link 1135-1 through the third switch 1157, and is obtained through the Rx link 1145 when the first LO 1140-1 is electrically connected to the mixer 1146 of the Rx link 1145 through the third switch 1157. For example, the processor 120 may generate the third signal 1115 through the first switch 1150 in state 1150-3, the second switch 1155 in state 1155-3, and the third switch 1157 in state 1157-1. For example, the processor 120 may obtain the third signal 1115 through the Rx link 1145 via the first switch 1150 in state 1150-3, the second switch 1155 in state 1155-3, and the third switch 1157 in state 1157-2.

[0117] For example, based on connecting the second Tx link 1135-2 electrically disconnected from the PA 1161-2 of the second RFFE 1160-2 and the Rx link 1145 electrically disconnected from the coupler 1170-2 of the second RFFE 1160-2, the processor 120 may generate a fourth signal 1116, wherein the fourth signal is obtained through the second Tx link 1135-2 when the second LO 1140-2 is electrically connected to the mixer 1136-2 of the second Tx link 1135-2 through the third switch 1157, and is obtained via the Rx link 1145 when the second LO 1140-2 is electrically connected to the mixer 1146 of the Rx link 1145 through the third switch 1157. For example, the processor 120 may generate the fourth signal 1116 through the first switch 1150 in the state 1150-4, the second switch 1155 in the state 1155-3, and the third switch 1157 in the state 1157-3. For example, the processor 120 may obtain the fourth signal 1116 through the Rx link 1145 via the first switch 1150 in state 1155 - 4 , the second switch 1155 in state 1155 - 3 , and the third switch 1157 in state 1157 - 4 .

[0118] For example, the processor 120 can identify the state of the first RFFE 1160-1, the state of the second RFFE 1160-2, and the state of the RFIC 1130 based at least in part on the coupled signal 1112 of the first signal 1111, the coupled signal 1114 of the second signal 1113, the third signal 1115 and the fourth signal 1116.

[0119] For example, the processor 120 may identify the state of the first RFFE 1160-1 and the state of the RFIC 1130 based on the coupled signal 1112 and the third signal 1115 of the first signal 1111. For example, the processor 120 may identify the state of the first RFFE 1160-1 and the state of the RFIC 1130 by performing identification based on the coupled signal 1112 and the third signal 1115 of the first signal 1111 as in the identification performed based on the coupled signal 192 and the second signal 193 of the first signal 191 described above.

[0120] For example, the processor 120 may identify the state of the second RFFE 1160-2 and the state of the RFIC 1130 based on the coupled signal 1114 and the fourth signal 1116 of the second signal 1113. For example, the processor 120 may identify the state of the second RFFE 1160-2 and the state of the RFIC 1130 by performing identification based on the coupled signal 1114 and the fourth signal 1116 of the second signal 1113 as in the identification performed based on the coupled signal 192 and the second signal 193 of the first signal 191 described above.

[0121] As described above, in the case of sending two or more signals, the electronic device 101 can identify the state of the first RFFE 1160-1, the state of the second RFFE 1160-2 and the state of the RFIC 1130 based at least in part on the coupling signal 1112 of the first signal 1111, the coupling signal 1114 of the second signal 1113, the third signal 1115 and the fourth signal 1116.

[0122] Fig.12 is a block diagram of an electronic device in a network environment according to various embodiments.

[0123] Fig.12 1 is a block diagram of an electronic device 1201 in a network environment 1200 according to various embodiments. Fig.12, the electronic device 1201 in the network environment 1200 may communicate with the electronic device 1202 via the first network 1298 (e.g., a short-range wireless communication network), or communicate with at least one of the electronic device 1204 or the server 1208 via the second network 1299 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 1201 may communicate with the electronic device 1204 via the server 1208. According to an embodiment, the electronic device 1201 may include a processor 1220, a memory 1230, an input module 1250, a sound output module 1255, a display module 1260, an audio module 1270, a sensor module 1276, an interface 1277, a connection terminal 1278, a haptic module 1279, a camera module 1280, a power management module 1288, a battery 1289, a communication module 1290, a subscriber identification module (SIM) 1296, or an antenna module 1297. In some embodiments of the present disclosure, at least one of the above components (e.g., the connection terminal 1278) may be omitted from the electronic device 1201, or one or more other components may be added to the electronic device 1201. In some embodiments of the present disclosure, some of the above components (e.g., the sensor module 1276, the camera module 1280, or the antenna module 1297) may be implemented as a single integrated component (e.g., the display module 1260).

[0124] The processor 1220 may run, for example, software (e.g., program 1240) to control at least one other component (e.g., hardware component or software component) of the electronic device 1201 connected to the processor 1220, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 1220 may store a command or data received from another component (e.g., sensor module 1276 or communication module 1290) in the volatile memory 1232, process the command or data stored in the volatile memory 1232, and store the result data in the non-volatile memory 1234. According to an embodiment, the processor 1220 may include a main processor 1221 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 1223 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is independent of or combined with the main processor 1221 in operation. For example, when the electronic device 1201 includes a main processor 1221 and an auxiliary processor 1223, the auxiliary processor 1223 may be adapted to consume less power than the main processor 1221, or may be adapted to be dedicated to a specific function. The auxiliary processor 1223 may be implemented as a separate part from the main processor 1221, or as part of the main processor 1221.

[0125] When the main processor 1221 is in an inactive (e.g., sleep) state, the auxiliary processor 1223 (rather than the main processor 1221) may control at least some of the functions or states related to at least one component among the components of the electronic device 1201 (e.g., the display module 1260, the sensor module 1276, or the communication module 1290), or when the main processor 1221 is in an active state (e.g., running an application), the auxiliary processor 1223 may control at least some of the functions or states related to at least one component among the components of the electronic device 1201 (e.g., the display module 1260, the sensor module 1276, or the communication module 1290) together with the main processor 1221. According to an embodiment, the auxiliary processor 1223 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., a camera module 1280 or a communication module 1290) that is functionally related to the auxiliary processor 1223. According to an embodiment, the auxiliary processor 1223 (e.g., a neural processing unit) may include a hardware structure dedicated to artificial intelligence model processing. The artificial intelligence model may be generated by machine learning. For example, such learning may be performed by the electronic device 1201 where the artificial intelligence is executed or via a separate server (e.g., server 1208). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, for example. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), or a deep Q network or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to a hardware structure.

[0126] The memory 1230 may store various data used by at least one component of the electronic device 1201 (e.g., the processor 1220 or the sensor module 1276). The various data may include, for example, software (e.g., program 1240) and input data or output data for commands related thereto. The memory 1230 may include a volatile memory 1232 or a non-volatile memory 1234.

[0127] The program 1240 may be stored as software in the memory 1230 , and the program 1240 may include, for example, an operating system (OS) 1242 , middleware 1244 , or an application 1246 .

[0128] The input module 1250 may receive commands or data to be used by other components (e.g., the processor 1220) of the electronic device 1201 from outside the electronic device 1201 (e.g., a user). The input module 1250 may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus).

[0129] The sound output module 1255 can output sound signals to the outside of the electronic device 1201. The sound output module 1255 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. Depending on the embodiment, the receiver can be implemented as a separate speaker or as part of the speaker.

[0130] The display module 1260 may visually provide information to the outside (e.g., user) of the electronic device 1201. The display device 1260 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display module 1260 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of a force caused by a touch.

[0131] The audio module 1270 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 1270 may obtain sound via the input module 1250, or output sound via the sound output module 1255 or a speaker or earphone of an external electronic device (e.g., electronic device 1202) directly (e.g., wired) connected to the electronic device 1201 or wirelessly connected.

[0132] The sensor module 1276 may detect an operating state (e.g., power or temperature) of the electronic device 1201 or an environmental state (e.g., a state of a user) outside the electronic device 1201, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 1276 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 infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0133] The interface 1277 may support one or more specific protocols to be used to connect the electronic device 1201 directly (e.g., wired) or wirelessly to an external electronic device (e.g., the electronic device 1202). According to an embodiment, the interface 1277 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0134] The connection end 1278 may include a connector, wherein the electronic device 1201 can be physically connected to an external electronic device (e.g., the electronic device 1202) via the connector. According to an embodiment, the connection end 1278 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0135] The haptic module 1279 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 1279 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0136] The camera module 1280 may capture a still image or a moving image. According to an embodiment, the camera module 1280 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0137] The power management module 1288 may manage power supply to the electronic device 1201. According to an embodiment, the power management module 1288 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0138] The battery 1289 may power at least one component of the electronic device 1201. According to an embodiment, the battery 1289 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0139] The communication module 1290 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 1201 and an external electronic device (e.g., electronic device 1202, electronic device 1204, or server 1208), and perform communication via the established communication channel. The communication module 1290 may include one or more communication processors capable of operating independently from the processor 1220 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 1290 may include a wireless communication module 1292 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 1294 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate via a first network 1298 (e.g., a short-range communication network such as Bluetooth TM, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 1299 (for example, a long-distance communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (for example, a LAN or a wide area network (WAN)))) to communicate with an external electronic device. These various types of communication modules can be implemented as a single component (for example, a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (for example, multiple chips). The wireless communication module 1292 can use the user information (for example, the International Mobile Subscriber Identity (IMSI)) stored in the user identification module 1296 to identify and authenticate the electronic device 1201 in the communication network (such as the first network 1298 or the second network 1299).

[0140] The wireless communication module 1292 can support 5G networks after 4G networks and next-generation communication technologies (e.g., new radio (NR) access technology). NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC), or ultra-reliable low-latency communication (URLLC). The wireless communication module 1292 can support high-frequency bands (e.g., millimeter wave bands) to cope with, for example, high data transmission rates. The wireless communication module 1292 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 1292 can support various requirements specified in the electronic device 1201, an external electronic device (e.g., an electronic device 1204), or a network system (e.g., a second network 1299). According to an embodiment, the wireless communication module 1292 may support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), loss coverage for implementing mMTC (e.g., 164 dB or less), or U-plane delay for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip).

[0141] The antenna module 1297 may transmit a signal or power to the outside of the electronic device 1201 (e.g., an external electronic device) or receive a signal or power from the outside of the electronic device 1201 (e.g., an external electronic device). According to an embodiment, the antenna module 1297 may include an antenna including a radiating element including a conductive material or a conductive pattern formed in a substrate (e.g., a printed circuit board (PCB)) or formed on a substrate. According to an embodiment, the antenna module 1297 may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme used in a communication network (such as the first network 1298 or the second network 1299) may be selected from the plurality of antennas by, for example, the communication module 1290 (e.g., the wireless communication module 1292). A signal or power may then be transmitted or received between the communication module 1290 and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as a part of the antenna module 1297.

[0142] According to various embodiments, the antenna module 1297 may form a millimeter wave antenna module. According to an embodiment, the millimeter wave antenna module may include a printed circuit board, a radio frequency integrated circuit (RFIC), and a plurality of antennas (e.g., array antennas), wherein the RFIC is disposed on a first surface (e.g., bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., millimeter wave band), and the plurality of antennas are disposed on a second surface (e.g., top surface or side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

[0143] At least some of the above components may be connected to each other via an inter-peripheral communication scheme (e.g., a bus, general purpose input output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0144] According to an embodiment, a command or data may be sent or received between the electronic device 1201 and the external electronic device 1204 via the server 1208 connected to the second network 1299. Each of the electronic device 1202 or the electronic device 1204 may be a device of the same type as the electronic device 1201, or a device of a different type from the electronic device 1201. According to an embodiment, all or some operations to be executed in the electronic device 1201 may be executed in one or more of the external electronic device 1202, the external electronic device 1204, or the server 1208. For example, if the electronic device 1201 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 1201 may request the one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 1201 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices receiving the request may execute at least part of the function or service requested, or execute another function or another service related to the request, and transmit the result of the execution to the electronic device 1201. The electronic device 1201 may provide the result as at least a partial reply to the request in the case of further processing the result or in the case of not further processing the result. To this end, cloud computing technology, distributed computing technology, mobile edge computing (MEC) technology or client-server computing technology, for example, may be used. The electronic device 1201 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment of the present disclosure, the external electronic device 1204 may include an Internet of Things (IoT) device. The server 1208 may be an intelligent server using machine learning and / or neural networks. According to an embodiment, the external electronic device 1204 or the server 1208 may be included in the second network 1299. The electronic device 1201 may be applied to intelligent services (e.g., smart homes, smart cities, smart cars or health care) based on 5G communication technology or IoT-related technologies.

[0145] As described above, the electronic device 101 may include the antenna 190. According to an embodiment, the electronic device 101 may include a radio frequency front end (RFFE) 160 including a coupler 170 connected to the antenna 190 and a power amplifier (PA) 161 connected to the coupler 170. According to an embodiment, the electronic device 101 may include a radio frequency integrated circuit (RFIC) 130 including a local oscillator (LO) 140, a Tx (transmit) link 135 including a mixer 136 connected to the LO 140, an Rx (receive) link 145 including a mixer 146 connected to the LO 140, a first switch 150 for connecting the PA 161 or the Rx link 145 to the Tx link 135, and a second switch 155 for connecting the coupler 170 or the Tx link 135 to the Rx link 145. According to an embodiment, the electronic device 101 may include a processor 120. According to an embodiment, based on connecting the PA 161 and the Tx link 135 through the first switch 150 and connecting the coupler 170 and the Rx link 145 through the second switch 155, the processor 120 may be configured to transmit the first signal 191 obtained through the Tx link 135 via the antenna 190 with the power set using the PA 161, and obtain a coupled signal 192 of the first signal 191 through the Rx link 145. According to an embodiment, based on connecting the Tx link 135 disconnected from the PA 161 and the Rx link 145 disconnected from the coupler 170 through the first switch 150 and the second switch 155, the processor 120 may be configured to obtain a second signal 193 obtained through the Tx link 135 via the Rx link 145. According to an embodiment, the processor 120 may be configured to identify the state of the RFFE 160 and the state of the RFIC 130 based at least in part on the coupled signal 192 of the first signal 191 and the second signal 193. Controlling the first switch 150 and / or the second switch 155 allows the electronic device to receive the second signal 193 and the coupled signal 192, which indicate the integrity of different corresponding transmission paths or signal paths and components on the corresponding signal paths, which thus allows identification and / or location of the status, e.g., failure or normal operating status, of at least a portion of the RFIC 130 and at least a portion of the RFFE 160. Therefore, the electronic device 101 can enhance the quality of communication through the electronic device.

[0146] According to an embodiment, the processor 120 may be configured to identify whether the state of the coupled signal 192 of the first signal 191 is in a first reference state in response to obtaining the coupled signal 192 of the first signal 191. According to an embodiment, the processor 120 may be configured to maintain the connection between the PA 161 and the Tx link 135 through the first switch 150 and the connection between the coupler 170 and the Rx link 145 through the second switch 155 in response to the state of the coupled signal 192 of the first signal 191 being in the first reference state. Therefore, in this case, since the transmission path is in a normal state, the electronic device can safely transmit the first signal 191. According to an embodiment, in response to the state of the coupled signal 192 of the first signal 191 being different from the first reference state, the processor 120 may be configured to disconnect the Tx link 135 from the PA 161 through the first switch 150, disconnect the Rx link 145 from the coupler 170 through the second switch 155, and connect the Tx link 135 and the Rx link 145 through the first switch 150 and the second switch 155. Therefore, the electronic device may be enabled to further explore the cause and / or location of a fault in the electronic device.

[0147] According to an embodiment, in response to the state of the coupled signal 192 of the first signal 191 being in the first reference state, the processor may be configured to inhibit: disconnecting the Tx link 135 from the PA 161 through the first switch 150, disconnecting the Rx link 145 from the coupler 170 through the second switch 155, and connecting the Tx link 135 and the Rx link 145 through the first switch 150 and the second switch 155. Therefore, the electronic device can transmit the first signal 191 in accordance with the safe transmission operation because the transmission path is checked to be in a normal state.

[0148] According to an embodiment, the processor 120 may be configured to identify whether the state of the coupled signal 192 of the first signal 191 is in the first reference state based on comparing the reference information with the information indicating the quality of the coupled signal 192 of the first signal 191. Thus, an objective comparison reference is provided to identify a normal state or a fault. A similar test may be performed on the second signal 193.

[0149] According to an embodiment, the information may be obtained based on adjacent channel power ratio (ACPR), adjacent channel leakage ratio (ACLR) or error vector magnitude (EVM) of coupled signal 192 identifying first signal 191. Similar tests may also be performed on second signal 193.

[0150] According to an embodiment, the first switch 150 may include a first terminal 150-1 connected to the Tx link 135, a second terminal 150-2 connected to the PA 161, and a third terminal 150-3 connected to the second switch 155. According to an embodiment, the second switch 155 may include a first terminal 155-1 connected to the Rx link 144, a second terminal 155-2 connected to the coupler 170, and a third terminal 155-3 connected to the third terminal 150-3 of the first switch 150. According to an embodiment, the connection between the PA 161 and the Tx link 135 may be established by connecting the second terminal 150-2 of the first switch 150 from among the second terminal 150-2 of the first switch 150 and the third terminal 150-3 of the first switch 150 to the first terminal 150-1 of the first switch 150. According to an embodiment, the connection between the coupler 170 and the Rx link 145 may be formed by connecting the second terminal 155-2 of the second switch 155 from among the second terminal 155-2 of the second switch 155 and the third terminal 155-3 of the second switch 155 to the first terminal 155-1 of the second switch 155. According to an embodiment, the connection between the Tx link 135 and the Rx link 145 may be established by connecting the third terminal 150-3 of the first switch 150 from among the second terminal 150-2 and the third terminal 150-3 of the first switch 150 to the first terminal 150-1 of the first switch 150 and connecting the third terminal 155-3 of the second switch 155 from among the second terminal 155-2 of the second switch 155 and the third terminal 155-3 of the second switch 155 to the first terminal 155-1 of the second switch 155.

[0151] According to an embodiment, a connection path between the third terminal 150-3 of the first switch 150 and the third terminal 155-3 of the second switch 155 may include an attenuator 400. According to an embodiment, the processor 120 may be configured to obtain the second signal 193 having power reduced by the attenuator 400 via the Rx link 145 based on connecting the Tx link 135 and the Rx link 145 through the first switch 150 and the second switch 155. The attenuator 400 may reduce damage to at least a portion of the Rx link 145 by reducing the strength or electrical power of the second signal 193.

[0152] According to an embodiment, the processor 120 may be configured to obtain the second signal 193 based on connecting the Tx link 135 and the Rx link 145 through the first switch 150 and the second switch 155 in response to obtaining the coupling signal 192 of the first signal 191 .

[0153] According to an embodiment, obtaining the second signal 193 may be performed based on a predetermined cycle. Therefore, the operation status may be automatically supervised as a supervision routine to ensure safe transmission operation of the electronic device.

[0154] According to an embodiment, the processor 120 may be configured to, in response to obtaining the second signal 193, obtain a coupled signal 192 of the first signal 191 based on disconnecting the Rx link 145 from the Tx link 135 through the first switch 150 and the second switch 155, connecting the PA 161 and the Tx link 135 through the first switch 150, and connecting the coupler 170 and the Rx link 145 through the second switch 155.

[0155] According to an embodiment, the processor 120 may be configured to identify the state of the RFFE 160 and the state of the RFIC 130 in the following manner: based on the state of the coupled signal 192 of the first signal 191 being in the first reference state, identifying that the states of the Tx link 135, the Rx link 145, and the PA 161 are in a normal operating state; based on the state of the coupled signal 192 of the first signal 191 being different from the first reference state and the state of the second signal 193 being in a second reference state, identifying that the states of the Tx link 135 and the Rx link 145 are in the normal operating state and the state of the PA 161 is different from the normal operating state; and based on the state of the coupled signal 192 of the first signal 191 being different from the first reference state and the state of the second signal 193 being different from the second reference state, identifying that the states of the Tx link 135 and the Rx link 145 are different from the normal operating state.

[0156] According to an embodiment, the RFFE 160 may include a low noise amplifier LNA 175. According to an embodiment, the RFIC 130 may further include another LO 199 and another Rx link 158 including a mixer 159 connected to the another LO 199, the another Rx link 158 being connected to the LNA 175. The LNA may amplify the power of the signal received through the antenna 190. According to an embodiment, the Rx link 145 may be used to obtain a coupled signal 192 of the first signal 191. According to an embodiment, the another Rx link 158 may be used to obtain a signal received through the antenna 190. Therefore, the usability of the electronic device is enhanced due to the additional independent reception path, because the device can receive both the coupled signal 192 and the signal from the antenna 190 at one time.

[0157] According to an embodiment, the processor 120 may be configured to, in response to identifying that the state of the RFFE 160 is different from the normal operating state, reset at least a portion of the RFFE 160 based at least in part on the coupled signal 192 of the first signal 191 and the second signal 193. According to an embodiment, the processor 120 may be configured to, in response to identifying that the state of the RFIC 130 is different from the normal operating state, reset at least a portion of the RFIC 130 based at least in part on the coupled signal 192 of the first signal 191 and the second signal 193. Thus, an automatic reaction is achieved, which can quickly resolve the identified fault.

[0158] According to an embodiment, the processor may be configured to: in response to obtaining the second signal 193, identify whether the state of the second signal is in a second reference state. In response to the state of the second signal 193 being in the second reference state, the processor may be configured to obtain a coupled signal (192) of the first signal 191 by transmitting the first signal, and the processor may be configured to stop transmitting the first signal 191, for example, for a period of time, in response to the state of the second signal 193 being different from the second reference state. This can reduce damage to at least a portion of the RFIC 130 related to the transmission of the first signal 191 or damage to at least a portion of the RFFE 160 due to the identified fault of at least a portion of the RFIC 130.

[0159] As described above, the electronic device 101 may include an antenna 190. According to an embodiment, the electronic device 101 may include a radio frequency integrated circuit (RFIC) 130 including a local oscillator (LO) 140, a Tx (transmit) link 135 including a mixer 136 connected to the LO 140, and an Rx (receive) link 145 including a mixer 146 connected to the LO 140. According to an embodiment, the electronic device 101 may include a radio frequency front end (RFFE) 160 including a coupler 170 connected to the antenna 190 and to the Rx link 145, a power amplifier PA 161, a first switch 1000 for connecting the PA 161 or the coupler 170 to the Tx link 135, and a second switch 1050 for connecting the Tx link 135 or the PA 161 to the coupler 170. According to an embodiment, the electronic device 101 may include a processor 120. According to an embodiment, the processor 120 may be configured to: based on connecting the Tx link 135 to the PA 161 through the first switch 1000 and connecting the PA 161 and the coupler 170 through the second switch 1050, transmit the first signal 191 obtained through the Tx link 135 via the antenna 190 with the power set using the PA 161, and obtain a coupled signal 192 of the first signal 191 through the Rx link 145. According to an embodiment, the processor 120 may be configured to transmit the second signal 1093 obtained through the Tx link 135 and obtain a coupled signal of the second signal 1093 through the Rx link 145 based on connecting the Tx link 135 disconnected from the PA 161 and the coupler 170 disconnected from the PA 161 through the first switch 1000 and the second switch 1050. According to an embodiment, the processor 120 may be configured to identify the state of the RFFE 160 and the state of the RFIC 130 based at least in part on the coupled signal 192 of the first signal 191 and the coupled signal 1094 of the second signal 1093. Controlling the first switch 1000 and / or the second switch 1050 allows the electronic device to receive the coupled signals 192, 194, which indicate the integrity of the components on the different corresponding transmission paths or signal paths and the corresponding signal paths, which thus allows the state of at least a portion of the RFIC 130 and at least a portion of the RFFE 160 to be identified and / or located, for example, a fault or a normal operating state. Therefore, the electronic device 101 can enhance the quality of communication through the electronic device.

[0160] According to an embodiment, the processor 120 may be configured to identify whether the state of the coupled signal 192 of the first signal 191 is in a reference state in response to obtaining the coupled signal 192 of the first signal 191. According to an embodiment, the processor 120 may be configured to maintain the connection of the Tx link 135 to the PA 161 through the first switch 1000 and the connection of the PA 161 and the coupler 170 through the second switch 1050 in response to the state of the coupled signal 192 of the first signal 191 being in the reference state. According to an embodiment, in response to the state of the coupled signal 192 of the first signal 191 being different from the reference state, the processor 120 may be configured to disconnect the Tx link 135 from the PA 161 through the first switch 1000, disconnect the coupler 170 from the PA 161 through the second switch 1050, and connect the Tx link 135 and the coupler 170.

[0161] According to an embodiment, the first switch 1000 may include a first terminal 1011 connected to the Tx link 135, a second terminal 1012 connected to the PA 161, and a third terminal 1013 connected to the second switch 1050. According to an embodiment, the second switch 1050 may include a first terminal 1061 connected to the coupler 170, a second terminal 1062 connected to the PA 161, and a third terminal 1063 connected to the third terminal 1013 of the first switch 1000. According to an embodiment, the connection between the Tx link 135 and the PA 161 may be formed by connecting the second terminal 1012 of the first switch 1000, among the second terminal 1012 of the first switch 1000 and the third terminal 1013 of the first switch 1000, to the first terminal 1011 of the first switch 1000. According to an embodiment, the connection between the PA 161 and the coupler 170 may be formed by connecting the second terminal 1062 of the second switch 1050 among the second terminal 1062 of the second switch 1050 and the third terminal 1063 of the second switch 1050 to the first terminal 1061 of the second switch 1050. According to an embodiment, the connection between the Tx link 135 and the coupler 170 may be established by connecting the third terminal 1013 of the first switch 1000 among the second terminal 1012 of the first switch 1000 and the third terminal 1013 of the first switch 1000 to the first terminal 1011 of the first switch 1000, and connecting the third terminal 1063 of the second switch 1050 among the second terminal 1062 of the second switch 1050 and the third terminal 1063 of the second switch 1050 to the first terminal 1061 of the second switch 1050.

[0162] According to an embodiment, in response to obtaining the coupling signal 192 of the first signal 191 , the processor 120 may be configured to obtain a coupling signal 1094 of the second signal 1093 based on connecting the Tx link 135 and the coupler 170 through the first switch 1000 and the second switch 1050 .

[0163] According to an embodiment, in response to obtaining a coupling signal 1094 of the second signal 1093, the processor 120 may be configured to obtain a coupling signal 192 of the first signal 191 based on disconnecting the coupler 170 from the Tx link 135 through the first switch 1000 and the second switch 1050, connecting the Rx link 135 to the PA 161 through the first switch 1000, and connecting the coupler 170 to the PA 161 through the second switch 1050.

[0164] As described above, the electronic device may include a first antenna. The electronic device may include a second antenna. The electronic device may include a first radio frequency front end (RFFE), the first RFFE including a coupler connected to the first antenna and a power amplifier (PA) connected to the coupler. The electronic device may include a second RFFE, the second RFFE including a coupler connected to the second antenna and a PA connected to the coupler, the coupler being connected to the second antenna. The electronic device may include a radio frequency integrated circuit (RFIC) including a first local oscillator (LO), a second LO, a first Tx (transmit) link including a mixer connectable to a first LO among the first LO and the second LO, a second Tx link including a mixer connectable to a second LO among the first LO and the second LO, an Rx (receive) link including a mixer connectable to the first LO or the second LO, a first switch for connecting a PA or an Rx link of a first RFFE to a first Tx link or connecting the Rx link or a PA of the second RFFE to the second Tx link, a second switch for connecting a coupler of the first RFFE or the first Tx link to the Rx link or connecting a coupler of the second RFFE or the second Tx link to the Rx link, and a third switch for connecting the first LO to a mixer of the first Tx link, connecting the second LO to a mixer of the second Tx link, or connecting the first LO or the second LO to a mixer of the Rx link. The electronic device may include a processor. According to an embodiment, the processor may be configured to: in a case where the first LO is connected to the mixer of the first Tx link through the third switch, based on connecting the PA of the first RFFE and the first Tx link through the first switch, transmit the first signal obtained through the first Tx link via the first antenna with a power set using the PA of the first RFFE. According to an embodiment, the processor may be configured to: in a case where the first LO is connected to the mixer of the Rx link through the third switch, based on connecting the coupler of the first RFFE and the Rx link through the second switch, obtain a coupled signal of the first signal through the Rx link. According to an embodiment, the processor may be configured to: in a case where the second LO is connected to the mixer of the second Tx link through the third switch, based on connecting the PA of the second RFFE and the second Tx link through the first switch, transmit the second signal obtained through the second Tx link via the second antenna with a power set using the PA of the second RFFE. According to an embodiment, the processor may be configured to: in a case where the second LO is connected to the mixer of the Rx link through the third switch, based on connecting the coupler of the second RFFE and the Rx link through the second switch, obtain a coupled signal of the second signal through the Rx link.According to an embodiment, the processor may be configured to obtain a third signal based on connecting the first Tx link disconnected from the PA of the first RFFE and the Rx link disconnected from the coupler of the first RFFE through the first switch and the second switch, wherein the third signal is obtained through the first Tx link when the first LO is connected to the mixer of the first Tx link through the third switch, and is obtained through the Rx link when the first LO is connected to the mixer of the Rx link through the third switch. According to an embodiment, the processor may be configured to obtain a fourth signal based on connecting the second Tx link disconnected from the PA of the second RFFE and the Rx link disconnected from the coupler of the second RFFE through the first switch and the second switch, wherein the fourth signal is obtained through the second Tx link when the second LO is connected to the mixer of the second Tx link through the third switch, and is obtained via the Rx link when the second LO is connected to the mixer of the Rx link through the third switch. According to an embodiment, the processor may be configured to identify the state of the first RFFE, the state of the second RFFE, and the state of the RFIC based at least in part on the coupling signal of the first signal, the coupling signal of the second signal, the third signal, and the fourth signal. Therefore, in addition to the electronic device including two or more RFFEs to, for example, support carrier aggregation and / or dual connectivity, enhanced quality of communication through the electronic device is provided because signals are received through different transmission paths or signal paths and components on the corresponding signal paths to identify and / or locate the status of at least a portion of the RFIC130 and at least a portion of the RFFE, for example, a fault or normal operating state.

[0165] According to an embodiment, the second signal may be transmitted through the second antenna, and the first signal may be transmitted through the first antenna.

[0166] The electronic device according to various embodiments disclosed herein may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment, the electronic device is not limited to those electronic devices described above.

[0167] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms for corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. As used herein, each of the phrases such as "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 "at least one of A, B or C" may include any one or all possible combinations of the items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., the second element)”, “combined to another element (e.g., the second element)”, “connected with another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” when the terms “operably” or “communicatively” are used or when the terms “operably” or “communicatively” are not used, it means that the element may be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0168] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum unit or portion of the single integrated component. For example, according to an embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0169] The various embodiments described herein may be implemented as software (e.g., program 1240) including one or more instructions stored in a storage medium (e.g., internal memory 1236 or external memory 1238) that can be read by a machine (e.g., electronic device 1201). For example, under the control of a processor, a processor (e.g., processor 1220) of the machine (e.g., electronic device 1201) may call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by an interpreter. A machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but the term does not distinguish between data being semi-permanently stored in a storage medium and data being temporarily stored in a storage medium.

[0170] According to an embodiment, the method according to various embodiments disclosed herein may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., Play Store TM ) The computer program product may be published (e.g., downloaded or uploaded) online, or the computer program product may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smart phones). If published online, at least part of the computer program product may be temporarily generated, or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0171] According to various embodiments, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. According to various embodiments, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each component in the multiple components in the same or similar manner as a corresponding component in the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more operations in the operations may be run or omitted in different orders, or one or more other operations may be added.

Claims

1. An electronic device (101), comprising: Antenna (190); A radio frequency front end RFFE (160) comprising a coupler (170) connected to the antenna (190) and a power amplifier PA (161) connected to the coupler (170); A radio frequency integrated circuit RFIC (130) comprising a local oscillator LO (140), a transmission Tx link (135) comprising a mixer (136) connected to the LO (140), a reception Rx link (145) comprising a mixer (146) connected to the LO (140), a first switch (150) for connecting the PA (161) or the Rx link (145) to the Tx link (135), and a second switch (155) for connecting the coupler (170) or the Tx link (135) to the Rx link (145); and a processor (120), Wherein, the processor (120) is configured to: Based on connecting the PA (161) and the Tx link (135) through the first switch (150) and connecting the coupler (170) and the Rx link (145) through the second switch (155), a first signal (191) obtained through the Tx link (135) is transmitted via the antenna (190) at a power set using the PA (161), and a coupled signal (192) of the first signal (191) is obtained through the Rx link (145); Based on connecting the Tx link (135) disconnected from the PA (161) and the Rx link (145) disconnected from the coupler (170) through the first switch (150) and the second switch (155), obtaining a second signal (193) obtained through the Tx link (135) via the Rx link (145); and A state of the RFFE (160) and a state of the RFIC (130) are identified based at least in part on a coupled signal (192) of the first signal (191) and the second signal (193).

2. The electronic device according to claim 1, wherein: The processor (120) is configured to: In response to obtaining a coupled signal (192) of the first signal (191), identifying whether a state of the coupled signal (192) of the first signal (191) is in a first reference state; In response to the state of the coupled signal (192) of the first signal (191) being in the first reference state, maintaining the connection between the PA (161) and the Tx link (135) through the first switch (150) and the connection between the coupler (170) and the Rx link (145) through the second switch (155); In response to a state of a coupled signal (192) of the first signal (191) being different from the first reference state, the Tx link (135) is disconnected from the PA (161) via the first switch (150), the Rx link (145) is disconnected from the coupler (170) via the second switch (155), and the Tx link (135) and the Rx link (145) are connected via the first switch (150) and the second switch (155).

3. The electronic device according to claim 2, wherein: The processor (120) is configured to, in response to the state of the coupled signal (192) of the first signal (191) being in the first reference state, inhibit: disconnecting the Tx link (135) from the PA (161) through the first switch (150), disconnecting the Rx link (145) from the coupler (170) through the second switch (155), and connecting the Tx link (135) and the Rx link (145) through the first switch (150) and the second switch (155).

4. The electronic device according to any one of the preceding claims 2 and 3, wherein: The processor (120) is configured to identify whether the state of the coupled signal (192) of the first signal (191) is in the first reference state based on comparing reference information with information indicating the quality of the coupled signal (192) of the first signal (191).

5. The electronic device according to claim 4, wherein: The information is obtained based on an adjacent channel power ratio (ACPR), an adjacent channel leakage ratio (ACLR), or an error vector magnitude (EVM) of a coupled signal (192) identifying the first signal (191).

6. An electronic device according to any one of the preceding claims, in, The first switch (150) includes a first terminal (150-1) connected to the Tx link (135), a second terminal (150-2) connected to the PA (161), and a third terminal (150-3) connected to the second switch (155); wherein the second switch (155) includes a first terminal (155-1) connected to the Rx link (144), a second terminal (155-2) connected to the coupler (170), and a third terminal (155-3) connected to the third terminal (150-3) of the first switch (150); wherein the connection between the PA (161) and the Tx link (135) is formed by connecting the second terminal (150-2) of the first switch (150) and the third terminal (150-3) of the first switch (150) to the first terminal (150-1) of the first switch (150); wherein the connection between the coupler (170) and the Rx link (145) is formed by connecting the second terminal (155-2) of the second switch (155) and the third terminal (155-3) of the second switch (155) to the first terminal (155-1) of the second switch (155); and The connection between the Tx link (135) and the Rx link (145) is formed by connecting the third terminal (150-3) of the first switch (150) from among the second terminal (150-2) and the third terminal (150-3) of the first switch (150) to the first terminal (150-1) of the first switch (150), and connecting the third terminal (155-3) of the second switch (155) from among the second terminal (155-2) of the second switch (155) and the third terminal (155-3) of the second switch (155) to the first terminal (155-1) of the second switch (155).

7. The electronic device according to claim 6, in, A connection path between the third terminal (150-3) of the first switch (150) and the third terminal (155-3) of the second switch (155) includes an attenuator (400); and The processor (120) is configured to obtain the second signal (193) having the power reduced by the attenuator (400) via the Rx link (145) based on connecting the Tx link (135) and the Rx link (145) through the first switch (150) and the second switch (155).

8. An electronic device according to any one of the preceding claims, wherein: The processor (120) is configured to obtain the second signal (193) based on connecting the Tx link (135) and the Rx link (145) through the first switch (150) and the second switch (155) in response to obtaining the coupling signal (192) of the first signal (191).

9. An electronic device according to any one of the preceding claims, wherein: Obtaining the second signal (193) is performed based on a predetermined cycle.

10. An electronic device according to any one of the preceding claims, wherein: The processor (120) is configured to obtain, in response to obtaining the second signal (193), a coupled signal (192) of the first signal (191) based on disconnecting the Rx link (145) from the Tx link (135) through the first switch (150) and the second switch (155), connecting the PA (161) and the Tx link (135) through the first switch (150), and connecting the coupler (170) and the Rx link (145) through the second switch (155).

11. An electronic device according to any one of the preceding claims, wherein: The processor (120) is configured to: identifying the state of the RFFE (160) and the state of the RFIC (130) by identifying that the states of the Tx link (135), the Rx link (145) and the PA (161) are in a normal operation state based on the state of the coupled signal (192) of the first signal (191) being in the first reference state, recognizing that the states of the Tx link (135) and the Rx link (145) are in the normal operation state and the state of the PA (161) is different from the normal operation state based on the state of the coupled signal (192) of the first signal (191) being different from the first reference state and the state of the second signal (193) being in the second reference state, and Based on the state of the coupled signal (192) of the first signal (191) being different from the first reference state and the state of the second signal (193) being different from the second reference state, it is recognized that the states of the Tx link (135) and the Rx link (145) are different from the normal operation state.

12. An electronic device according to any one of the preceding claims, wherein: The RFFE (160) further comprises a low noise amplifier LNA (175); wherein the RFIC (130) further comprises another LO (199) and another Rx link (158) comprising a mixer (159) connected to the another LO (199), and the another Rx link (158) is connected to the LNA (175); The Rx link (145) is used to obtain a coupled signal (192) of the first signal (191); and The other Rx link (158) is used to obtain a signal received through the antenna (190).

13. An electronic device according to any one of the preceding claims, wherein: The processor (120) is further configured to: In response to identifying that the state of the RFFE (160) is different from the normal operating state, resetting at least a portion of the RFFE (160) based at least in part on a coupled signal (192) of the first signal (191) and the second signal (193); as well as In response to identifying that the state of the RFIC (130) is different from the normal operating state, at least a portion of the RFIC (130) is reset based at least in part on a coupled signal (192) of the first signal (191) and the second signal (193).

14. An electronic device according to any one of the preceding claims, wherein: The processor (120) is configured to: In response to obtaining the second signal (193), identifying whether the state of the second signal (193) is in a second reference state; In response to the state of the second signal (193) being in the second reference state, obtaining a coupled signal (192) of the first signal (191) by sending the first signal (191); In response to the state of the second signal (193) being different from the second reference state, sending the first signal (191) is stopped.

15. An electronic device (101), comprising: Antenna (190); A radio frequency integrated circuit RFIC (130) comprising a local oscillator LO (140), a transmission Tx link (135) comprising a mixer (136) connected to the LO (140), and a reception Rx link (145) comprising a mixer (146) connected to the LO (140); A radio frequency front end RFFE (160) comprising a coupler (170) connected to the antenna (190) and to the Rx link (145), a power amplifier PA (161), a first switch (1000) for connecting the PA (161) or the coupler (170) to the Tx link (135), and a second switch (1050) for connecting the Tx link (135) or the PA (161) to the coupler (170); and a processor (120), Wherein, the processor (120) is configured to: Based on connecting the Tx link (135) to the PA (161) through the first switch (1000) and connecting the PA (161) and the coupler (170) through the second switch (1050), a first signal (191) obtained through the Tx link (135) is transmitted via the antenna (190) at a power set using the PA (161), and a coupled signal (192) of the first signal (191) is obtained through the Rx link (145); Based on connecting the Tx link (135) disconnected from the PA (161) and the coupler (170) disconnected from the PA (161) through the first switch (1000) and the second switch (1050), transmitting the second signal (1093) obtained through the Tx link (135) and obtaining a coupled signal (1094) of the second signal (1093) through the Rx link (145); and A state of the RFFE (160) and a state of the RFIC (130) are identified based at least in part on a coupled signal (192) of the first signal (191) and a coupled signal (1094) of the second signal (1093).

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