Electronic device for cell switching and operation method thereof

Abstract

An embodiment of the present invention relates to a device and method for cell switching in an electronic device. The electronic device comprises a communication circuit, a processor, and a memory. The memory may store instructions which, when executed by the processor, cause the electronic device to: identify a traffic state with a serving cell when it is determined that a measurement report event related to at least one candidate cell has occurred; update a measurement result related to the at least one candidate cell to a designated reference value or smaller so as not to attempt a cell change related to the electronic device in the serving cell when, on the basis of the traffic state with the serving cell, it is determined that the event related to the update of the measurement report has occurred; and transmit the updated measurement result related to the at least one candidate cell to the serving cell. Other embodiments may also be possible.

Description

Electronic device for cell switching and method of operation thereof

[0001] An embodiment of the present invention relates to an electronic device for cell switching in a wireless communication system and an operating method thereof.

[0002] To meet the increasing demand for wireless data traffic since the commercialization of 4G communication systems, efforts are being made to develop 5G communication systems. For this reason, 5G communication systems are also called "Beyond 4G Network" or "Post LTE" communication systems. To achieve relatively high data rates, 5G communication systems are being considered for implementation in sub-6 GHz bands (e.g., approximately 3.5 GHz bands) or higher frequency bands (e.g., approximately 28 GHz or 39 GHz bands). To mitigate radio path loss and increase the transmission range of radio waves, beamforming, massive MIMO (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large-scale antenna technologies are being discussed for 5G communication systems.

[0003] The above information may be provided as background information to aid in understanding this document. None of the above is claimed to be prior art related to this document or can be used to determine prior art.

[0004] 5G communication systems may support LTM (L1 / L2 triggered mobility) functionality for relatively fast cell switching (or cell movement) of electronic devices (e.g., user equipment (UE)). For example, LTM may include a series of operations to switch (or move) the serving cell of an electronic device to a designated candidate cell through signaling in L1 (layer 1) and / or L2 (layer 2).

[0005] LTM can cause cell switching of an electronic device more frequently than cell switching using L3 (layer 3) signaling in an area where multiple cells overlap, as the electronic device's serving cell is switched to a preset candidate cell based on the results of L1 measurement.

[0006] When using LTM, the activation time of an electronic device may unnecessarily increase due to relatively frequent cell switching. For example, if there is no traffic for a specified period of time in the RRC (radio resource control) connected state, the electronic device may transition to the RRC idle state or RRC inactive state. However, the electronic device may unnecessarily maintain the RRC connected state due to traffic generated by frequent cell switching based on LTM, resulting in unnecessary power consumption.

[0007] One embodiment of the present invention discloses a device and method for limiting unnecessary cell switching in an electronic device in an LTM environment.

[0008] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0009] According to one embodiment, an electronic device may include a communication circuit, at least one processor including a processing circuit, and a memory. According to one embodiment, the memory may store instructions that, when individually or collectively executed by the at least one processor, cause the electronic device to check a traffic status with a serving cell when it determines that a measurement report event associated with at least one candidate cell has occurred in a communication environment in which a cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2). According to one embodiment, the memory may store instructions that, when individually or collectively executed by the at least one processor, cause the electronic device to update a measurement result associated with at least one candidate cell to a value below a specified reference value so as to prevent a cell change associated with the electronic device from being attempted in the serving cell when it determines that an event associated with updating a measurement report has occurred based on a traffic status with the serving cell. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to transmit measurement results associated with at least one updated candidate cell to the serving cell to prevent the electronic device from attempting a cell change associated with the serving cell.

[0010] According to one embodiment, an operating method of an electronic device may include an operation of checking a traffic status with a serving cell when it is determined that a measurement report event related to at least one candidate cell has occurred in a communication environment in which a cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2). According to one embodiment, an operating method of an electronic device may include an operation of updating a measurement result related to at least one candidate cell to a specified reference value or less so as to prevent an attempt to change cells related to the electronic device in the serving cell when it is determined that an event related to updating a measurement report has occurred based on a traffic status with the serving cell. According to one embodiment, an operating method of an electronic device may include an operation of transmitting, to the serving cell, an updated measurement result related to at least one candidate cell so as to prevent an attempt to change cells related to the electronic device in the serving cell.

[0011] According to one embodiment, a non-transitory computer-readable storage medium (or a computer program product) storing one or more programs may be described. According to one embodiment, the one or more programs may include instructions that, when executed by a processor of an electronic device, cause the electronic device to, when it determines that a measurement report event related to at least one candidate cell has occurred in a communication environment in which a cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2), perform an operation of checking a traffic status with a serving cell, when it determines that an event related to updating a measurement report has occurred based on the traffic status with the serving cell, update a measurement result related to the at least one candidate cell to a value below a specified reference value so as to prevent the serving cell from attempting a cell change related to the electronic device, and transmit the updated measurement result related to the at least one candidate cell to the serving cell.

[0012] According to one embodiment of the present invention, an electronic device can reduce unnecessary power consumption due to cell switching of the electronic device by controlling L1 measurement reporting so as not to attempt cell switching in a serving cell when there is no traffic of the electronic device in an LTM environment.

[0013] In addition, various effects may be provided, either directly or indirectly, through this document.

[0014] The effects that can be obtained from the embodiments of the present invention are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the embodiments of the present invention belong from the description below.

[0015] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

[0016] FIG. 1 is a block diagram of an electronic device within a network environment, according to one embodiment.

[0017] FIG. 2 is an example for cell switching of an electronic device in an MCG according to one embodiment.

[0018] FIG. 3 is an example for cell switching of an electronic device in an SCG according to one embodiment.

[0019] FIG. 4 is a block diagram of an electronic device for cell switching according to one embodiment.

[0020] FIG. 5 is a flowchart for reporting measurement results in an electronic device according to one embodiment.

[0021] FIG. 6 is a flowchart for confirming a measurement reporting cycle in an electronic device of an LTM environment according to one embodiment.

[0022] FIG. 7 is a flowchart for selectively reporting measurement results related to a candidate cell in an electronic device according to one embodiment.

[0023] FIG. 8 is a flowchart for selectively reporting measurement results in an electronic device according to one embodiment.

[0024] FIG. 9 is an example for cell switching in an electronic device according to one embodiment.

[0025] The following examples are described in detail with reference to the attached drawings.

[0026] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0027] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor)) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0028] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of, but is not limited to, 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), a deep Q-network, or a combination of two or more thereof. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may also include a software structure.

[0029] The memory (130) can store various data used by at least one component (e.g., a processor (120) or a sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., a program (140)) and input data or output data for commands related thereto. The memory (130) can include a volatile memory (132) or a non-volatile memory (134).

[0030] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0031] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0032] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0033] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by a touch.

[0034] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0035] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0036] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0037] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., the electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0038] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0039] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0040] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0041] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0042] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, Wi-Fi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0043] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL) each, or 1 ms or less for round trip) for URLLC realization.According to one embodiment, the subscriber identification module (196) may include multiple subscriber identification modules. For example, the multiple subscriber identification modules may store different subscriber information.

[0044] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0045] In one embodiment, the antenna module (197) may form a high-frequency (e.g., mmWave) antenna module. In one embodiment, the high-frequency (e.g., mmWave) antenna module may include a printed circuit board, an RFIC positioned on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) positioned on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band. For example, the plurality of antennas may include patch array antennas and / or dipole array antennas.

[0046] At least some of the components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

[0047] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0048] An electronic device according to an embodiment disclosed in this document may take various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device according to an embodiment of this document is not limited to the aforementioned devices.

[0049] It should be understood that the embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to a specific embodiment, but rather to encompass various modifications, equivalents, or substitutes of the embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the item, unless the context clearly indicates otherwise. In this document, each of the phrases "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" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0050] The term "module" used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. It may be a module, an integrally formed component, or a minimum unit or portion of the component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0051] An embodiment of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0052] According to one embodiment, the method according to one embodiment disclosed in the present document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0053] According to one embodiment, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to one embodiment, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to one embodiment, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0054] FIG. 2 is an example for cell switching of an electronic device in an MCG according to one embodiment. FIG. 3 is an example for cell switching of an electronic device in an SCG according to one embodiment.

[0055] According to one embodiment referring to FIGS. 2 and 3, the electronic device (101) may be connected to a first cell (e.g., a primary cell (Pcell)) (200) of a master cell group (MCG) and a fourth cell (e.g., a primary secondary cell (PScell)) (300) of a secondary cell group (SCG) in a DC (dual connectivity) environment. For example, in the case of EN-DC (E-UTRAN NR dual connectivity), the electronic device (101) may be connected to a first cell (200) supporting long term evolution (LTE) communication and a fourth cell (300) supporting new radio (NR) communication. For example, in the case of NGEN-DC (next generation RAN E-UTRA NR dual connectivity), the electronic device (101) may be connected to a first cell (200) supporting LTE communication and a fourth cell (300) supporting NR communication. For example, in the case of NE-DC (NR E-UTRA dual connectivity), the electronic device (101) may be connected to a first cell (200) supporting NR communication and a fourth cell (300) supporting LTE communication. For example, in the case of NR-DC (NR dual connectivity), the electronic device (101) may be connected to a first cell (200) supporting a first frequency band of NR communication and a fourth cell (300) supporting a second frequency band of NR communication. For example, the cells (300, 302, and 304) of the SCG in FIG. 3 are illustrated as being physically separated to help with the convenience of explanation, but may not be limited thereto.

[0056] According to one embodiment, the electronic device (101) can independently perform cell switching within the MCG and cell switching within the SCG using LTM (L1 / L2 triggered mobility or lower layer triggered mobility). For example, LTM can include a series of operations for switching (or moving) a cell (or serving cell) of the electronic device through L1 (layer 1) and / or L2 (layer 2) signaling.

[0057] For example, the electronic device (101) may perform L3 channel measurement related to the MCG based on configuration information related to L3 (layer 3) channel measurement acquired from a first cell (e.g., a serving cell) (200) within the MCG. The electronic device (101) may report the L3 channel measurement result to the first cell (e.g., a serving cell) (200). As an example, the L3 channel measurement related to the MCG may include a series of operations for measuring channels for the first cell (e.g., a serving cell) (200) and a cell (or neighboring cell) (e.g., a second cell (202) and / or a third cell (204)) accessible to the electronic device (101) within the MCG. As an example, the L3 channel measurement may include a series of operations for measuring a channel state of a cell during a specified time in L3. For example, L3 is a layer that processes control signals transmitted and / or received by the electronic device (101) to and from the serving cell (200), and may include an RRC (radio resource control) layer and a NAS (non-access stratum) layer. For example, the serving cell is a cell (e.g., the first cell (200)) to which the electronic device (101) is connected and transmits and / or receives data with the electronic device (101), and may include a Pcell (primary cell) within the MCG.

[0058] For example, the first cell (200) can identify (or select) at least one candidate cell (e.g., the second cell (202) and / or the third cell (204)) to which the electronic device (101) can switch via LTM based on the L3 measurement result received from the electronic device (101). The first cell (200) can transmit configuration information related to the at least one candidate cell to the electronic device (101). For example, the configuration information related to the at least one candidate cell can include information related to a frequency of the candidate cell, a synchronization signal (e.g., a synchronization signal block (SSB)), or L1 measurement. For example, the information related to the L1 measurement can include at least one of an L1 measurement time point (or period) or an L1 measurement report time point (or period). For example, the candidate cells (e.g., the second cell (202) and / or the third cell (204)) may include at least one cell among cells (e.g., neighboring cells) accessible to the electronic device (101) whose L3 channel measurement result exceeds a designated first reference value. For example, the channel measurement result may include at least one of a received signal strength indication (RSSI), a reference signal received quality (RSRQ), a reference signal received power (RSRP), a signal to noise ratio (SNR), a signal to interference and noise ratio (SINR), a quality of service (QoS), or a bit error rate (BER) of the cell measured by the electronic device (101).

[0059] For example, the electronic device (101) may perform L1 measurements on a first cell (e.g., a serving cell) (200) and at least one candidate cell based on configuration information associated with at least one candidate cell. For example, the L1 channel measurements may include a series of operations for measuring a channel state of a cell based on a signal processed in L1 (layer 1). For example, L1 may include a physical layer of the electronic device (101).

[0060] For example, the electronic device (101) can adaptively perform reporting of L1 measurement results based on the traffic status of the electronic device (101). For example, if the electronic device (101) determines that a specified measurement result update event has not occurred based on the traffic status of the electronic device (101), the electronic device (101) can transmit the L1 measurement result to the first cell (e.g., serving cell) (200). For example, if the electronic device (101) determines that a specified measurement result update event has occurred based on the traffic status of the electronic device (101), the electronic device (101) can transmit the updated L1 measurement result to the first cell (e.g., serving cell) (200) or restrict transmission of the L1 measurement result. For example, the specified measurement result update event can occur when it is determined that there is no traffic of the electronic device (101) at the time of L1 measurement reporting. For example, a state in which no traffic of the electronic device (101) is determined at the time of the L1 measurement report may include a state in which there is no traffic for a first reference time period specified before the time of the L1 measurement report, a state in which there is no traffic for a second reference time period specified after the time of the L1 measurement report, or a state in which there is estimated to be no traffic for a second reference time period specified after the time of the L1 measurement report. For example, the state in which there is no traffic may include a state in which the amount (or average value) of data transmitted and / or received by the electronic device (101) to and from the serving cell is less than or equal to a specified reference traffic amount. For example, the specified reference traffic amount may represent a reference value (e.g., 0) set for determining whether a specified measurement result update event has occurred.

[0061] For example, if the electronic device (101) determines that a specified measurement result update event has occurred, the electronic device (101) may update the L1 measurement result associated with the candidate cell to a specified second reference value to prevent the first cell (e.g., serving cell) (200) from attempting a cell switch associated with the electronic device (101). For example, the electronic device (101) may transmit (or report) the L1 measurement result associated with the first cell (e.g., serving cell) (200) to the first cell (e.g., serving cell) (200) without updating. For example, the specified second reference value may include a value lower than a channel state of the first cell (e.g., serving cell) (200) or a specified minimum value.

[0062] For example, if the electronic device (101) determines that a specified measurement result update event has occurred, the electronic device (101) may transmit (or report) to the first cell (e.g., serving cell) (200) L1 measurement results related to the first cell (e.g., serving cell) (200) excluding L1 measurement results related to candidate cells so as to prevent the first cell (e.g., serving cell) (200) from attempting a cell switch related to the electronic device (101). The electronic device (101) may restrict transmission of L1 measurement results related to at least one candidate cell.

[0063] For example, when the electronic device (101) receives a control signal related to cell switching from the first cell (200), it can perform cell switching to a candidate cell (e.g., the second cell (202) or the third cell (204)) within the MCG included in the control signal related to cell switching.

[0064] For example, the electronic device (101) may perform L3 channel measurement related to the SCG based on configuration information related to L3 (layer 3) channel measurement acquired from a fourth cell (e.g., a serving cell) (300) within the SCG. The electronic device (101) may report (or transmit) the L3 channel measurement result to the fourth cell (e.g., a serving cell) (300). As an example, the L3 channel measurement related to the SCG may include a series of operations for measuring channels for the fourth cell (e.g., a serving cell) (300) within the SCG and a cell (or neighboring cell) accessible to the electronic device (101) (e.g., a fifth cell (302) and / or a sixth cell (304)). For example, a serving cell is a cell (e.g., a fourth cell (300)) to which an electronic device (101) is connected and transmits and / or receives data with the electronic device (101), and may include a PScell ​​(primary secondary cell) within an SCG.

[0065] For example, the fourth cell (300) may identify (or select) at least one candidate cell (e.g., the fifth cell (302) and / or the sixth cell (304)) to which the electronic device (101) can switch via LTM based on the L3 measurement result received from the electronic device (101). The fourth cell (300) may transmit configuration information related to the at least one candidate cell to the electronic device (101). For example, the candidate cells (e.g., the fifth cell (302) and / or the sixth cell (304)) may include at least one cell among cells (e.g., neighboring cells) accessible to the electronic device (101) whose L3 channel measurement result exceeds a specified first reference value.

[0066] For example, the electronic device (101) may perform L1 measurements on a fourth cell (e.g., a serving cell) (300) and at least one candidate cell based on configuration information associated with at least one candidate cell. For example, the L1 channel measurements may include a series of operations for measuring a channel state of a cell based on a signal processed in L1 (layer 1). For example, L1 may include a physical layer of the electronic device (101).

[0067] For example, the electronic device (101) can adaptively perform reporting of L1 measurement results based on the traffic status of the electronic device (101). For example, if the electronic device (101) determines that a specified measurement result update event has not occurred based on the traffic status of the electronic device (101), the electronic device (101) can transmit the L1 measurement result to the fourth cell (e.g., serving cell) (300). For example, if the electronic device (101) determines that a specified measurement result update event has occurred based on the traffic status of the electronic device (101), the electronic device (101) can transmit the updated L1 measurement result to the fourth cell (e.g., serving cell) (300) or restrict transmission of the L1 measurement result. For example, the specified measurement result update event may occur when it is determined that there is no traffic of the electronic device (101). For example, a state of no traffic may include a state in which the traffic volume of the electronic device (101) is lower than a specified reference traffic volume. For example, the baseline traffic volume may represent a set threshold value (e.g., 0) for determining whether a given measurement result update event occurs.

[0068] For example, if the electronic device (101) determines that a specified measurement result update event has occurred, the electronic device (101) may update the L1 measurement result associated with the candidate cell to a specified second reference value to prevent the fourth cell (e.g., serving cell) (300) from attempting a cell switch associated with the electronic device (101). For example, the electronic device (101) may transmit (or report) the L1 measurement result associated with the fourth cell (e.g., serving cell) (300) to the fourth cell (e.g., serving cell) (300) without updating. For example, the specified second reference value may include a value lower than a channel state of the fourth cell (e.g., serving cell) (300) or a specified minimum value.

[0069] For example, if the electronic device (101) determines that a specified measurement result update event has occurred, the electronic device (101) may transmit (or report) to the fourth cell (e.g., serving cell) (300) L1 measurement results related to the fourth cell (e.g., serving cell) (300) excluding L1 measurement results related to candidate cells so as to prevent the fourth cell (e.g., serving cell) (300) from attempting a cell switch related to the electronic device (101). The electronic device (101) may restrict transmission of L1 measurement results related to at least one candidate cell.

[0070] For example, when the electronic device (101) receives a control signal related to cell switching from the fourth cell (300), it can perform cell switching to a candidate cell (e.g., the fifth cell (302) or the sixth cell (304)) within the SCG included in the control signal related to cell switching.

[0071] In one embodiment, LTM can provide fast cell switching between pre-configured candidate cells so that the time (e.g., interruption time) during communication due to cell switching is minimized. When using LTM, the electronic device (101) can adaptively report L1 measurement results based on the traffic status of the electronic device (101), thereby reducing unnecessary cell switching in a state where there is no traffic of the electronic device (101), thereby reducing power consumption (or current consumption) due to LTM.

[0072] According to one embodiment, the electronic device (101) can equally perform cell switching (or movement) through LTM even when connected to a single cell rather than a DC environment.

[0073] FIG. 4 is a block diagram of an electronic device for cell switching according to one embodiment. For example, the electronic device (101) of FIG. 4 may be at least partially similar to the electronic device (101) of FIG. 1, FIG. 2, or FIG. 3, or may include other embodiments of the electronic device (101).

[0074] According to one embodiment referring to FIG. 4, the electronic device (101) may include at least one of a processor (400), a communication circuit (410), and a memory (420). For example, the processor (400) may be substantially the same as the processor (120) of FIG. 1 or may be included in the processor (120). The communication circuit (410) may be substantially the same as the wireless communication module (192) of FIG. 1 or may be included in the wireless communication module (192). The memory (420) may be substantially the same as the memory (130) of FIG. 1 or may be included in the memory (130). For example, the processor (400) may include a communication processor. For example, the processor (400) may be operatively, functionally, and / or electrically connected to at least one of the communication circuit (410) or the memory (420). For example, the processor (400) may include at least one processor including a processing circuit.

[0075] According to one embodiment, when the processor (400) is connected to a serving cell (e.g., the first cell (200) of FIG. 2 or the fourth cell (300) of FIG. 3), the processor (400) may control the communication circuit (410) to transmit the L3 measurement result to the serving cell. For example, the processor (400) may control the communication circuit (410) to perform L3 channel measurement for the serving cell and cells (e.g., neighboring cells) to which the electronic device (101) can connect based on configuration information related to L3 channel measurement acquired from the serving cell. For example, the L3 channel measurement may include a series of operations for measuring a channel state of a cell for a time specified in L3. For example, L3 is a layer that processes a control signal that the electronic device (101) transmits and / or receives with the serving cell (200), and may include an RRC (radio resource control) layer and a NAS (non-access stratum) layer.

[0076] For example, the processor (400) may determine whether a specified first measurement report event occurs based on the L3 channel measurement result. If the processor (400) determines that the specified first measurement report event occurs, the processor (400) may control the communication circuit (410) to transmit the L3 channel measurement result to the serving cell. For example, the specified first measurement report event may occur when the channel status of the serving cell is lower than a specified third reference value based on the L3 channel measurement result. For example, the specified first measurement report event may occur when, among cells accessible to the electronic device (101), there exists a cell whose channel status is higher than the specified third reference value than the channel status of the serving cell based on the L3 channel measurement result.

[0077] According to one embodiment, the processor (400) may obtain configuration information related to at least one candidate cell for LTM (L1 / L2 triggered mobility or lower layer triggered mobility) from the serving cell via the communication circuit (410). For example, LTM may include a series of operations for switching (or moving) a cell (or serving cell) of an electronic device through signaling at a layer lower than L3 (layer 3). For example, the signaling at a layer lower than L3 may include signaling of L1 or signaling of L1 and L2. For example, L1 may include a physical layer of the electronic device (101). For example, L2 may include at least one of a media access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, or a service data adaptation protocol (SDAP) layer. For example, the configuration information related to at least one candidate cell may include information related to a frequency of the candidate cell, a synchronization signal (e.g., a synchronization signal block (SSB)), or L1 measurement. For example, the information related to the L1 measurement may include at least one of an L1 measurement time point (or cycle) or an L1 measurement report time point (or cycle). For example, the candidate cell may include at least one cell (e.g., the second cell (202) and the third cell (204) of FIG. 2 or the fifth cell (302) and the sixth cell (304) of FIG. 3) among cells (e.g., neighboring cells) accessible to the electronic device (101) whose L3 channel measurement result exceeds a designated first reference value.For example, the channel measurement result may include at least one of the received signal strength indication (RSSI), reference signal received quality (RSRQ), reference signal received power (RSRP), signal to noise ratio (SNR), signal to interference and noise ratio (SINR), quality of service (QoS), or bit error rate (BER) of the cell measured by the electronic device (101).

[0078] According to one embodiment, the processor (400) may control the communication circuit (410) to perform downlink (DL) and / or uplink (UL) synchronization with at least one candidate cell based on configuration information associated with the at least one candidate cell. For example, the processor (400) may receive a synchronization signal of at least one candidate cell through the communication circuit (410) based on information associated with the synchronization signal included in the configuration information associated with the at least one candidate cell. The processor (400) may perform DL synchronization with each candidate cell based on the synchronization signal of the at least one candidate cell.

[0079] For example, the processor (400) may control the communication circuit (410) to transmit information (e.g., a RACH preamble) related to a random access channel (RACH) to each of at least one candidate cell. The processor (400) may perform UL synchronization with each candidate cell based on a response signal for the information related to the RACH received from each candidate cell. For example, the response signal for the information related to the RACH may be included in a control signal related to cell switching that instructs cell switching of the electronic device (101) in the serving cell.

[0080] According to one embodiment, the processor (400) may control the communication circuit (410) to perform L1 measurements on a serving cell and at least one candidate cell based on configuration information associated with the at least one candidate cell. For example, if the processor (400) determines that a designated second measurement report event has occurred, the processor (400) may control the communication circuit (410) to perform L1 channel measurements on the serving cell and at least one candidate cell (e.g., the second cell (202) and the third cell (204) of FIG. 2 or the fifth cell (302) and the sixth cell (304) of FIG. 3). For example, the second measurement report event may occur when an L1 channel time point (or period) acquired from the serving cell arrives. For example, the L1 channel measurements may include a series of operations for measuring a channel state of a cell based on a signal processed in L1 (layer 1).

[0081] According to one embodiment, when the processor (400) determines that a designated second measurement report event has occurred, the processor (400) may determine a measurement report format based on the traffic status of the electronic device (101). For example, the traffic status may be determined based on the amount of data transmitted and / or received by the electronic device (101) to and from the serving cell. For example, the traffic status may be determined (or estimated) based on at least one of the size of a transmission block (TB) or a buffer status.

[0082] For example, if the processor (400) determines that a specified measurement result update event has not occurred based on the traffic status of the electronic device (101), the processor (400) may select the first measurement report format for the L1 channel measurement report. For example, the specified measurement result update event may not occur if it is determined that traffic of the electronic device (101) exists at the time of the L1 measurement report. For example, the state in which traffic exists may include a state in which the amount (e.g., an average value) of data transmitted and / or received by the electronic device (101) to and from the serving cell during a specified first reference time period prior to the time period in which the L1 measurement report is made exceeds a specified reference traffic amount, a state in which the amount (e.g., an average value) of data transmitted and / or received by the electronic device (101) to and from the serving cell during a specified second reference time period after the time period in which the L1 measurement report is made is estimated to exceed a specified reference traffic amount. For example, a specified baseline traffic volume may represent a set threshold value (e.g., 0) for determining whether a specified measurement result update event occurs.

[0083] For example, if the processor (400) determines that a specified measurement result update event has occurred based on the traffic status of the electronic device (101), the processor (400) may determine that the electronic device (101) operates in a restricted LTM mode. The processor (400) may select a second measurement report format, a third measurement report format, or a fourth measurement report format for L1 channel measurement reporting based on the operation in the restricted LTM mode. For example, the specified measurement result update event may occur when it is determined that there is no traffic of the electronic device (101) at the time of L1 measurement reporting. For example, a state in which no traffic exists may include a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified first reference time period prior to the L1 measurement report time is less than or equal to the specified reference traffic amount, a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time is estimated to be less than or equal to the specified reference traffic amount. For example, the specified second reference time period may be set based on a reference time (e.g., an inactivity timer's running time) set to determine whether the electronic device (101) in an RRC (radio resource control) connected state transitions to an RRC idle state or an RRC inactive state.

[0084] According to one embodiment, the processor (400) may control the communication circuit (410) to transmit L1 measurement results related to the serving cell and at least one candidate cell to the serving cell when the first measurement report format is selected.

[0085] According to one embodiment, when the second measurement report format is selected, the processor (400) may update the L1 measurement results associated with the candidate cell to a specified second reference value to prevent the serving cell from attempting a cell switch associated with the electronic device (101). The processor (400) may control the communication circuit (410) to transmit the L1 measurement results associated with the serving cell and the updated L1 measurement results associated with at least one candidate cell to the serving cell. For example, the specified second reference value may include a value lower than a channel state of the first cell (e.g., the serving cell) (200) or a specified minimum value.

[0086] In one embodiment, the processor (400) may control the communication circuit (410) to transmit L1 measurement results associated with the serving cell, excluding updated L1 measurement results associated with at least one candidate cell, to the serving cell to prevent the electronic device (101) from attempting a cell switch in the serving cell when the third measurement report format is selected. For example, the processor (400) may control the communication circuit (410) to restrict transmission of L1 measurement results associated with at least one candidate cell.

[0087] According to one embodiment, the processor (400) may control the communication circuit (410) to limit transmission of L1 measurement results when the fourth measurement report format is selected.

[0088] According to one embodiment, when the processor (400) receives a control signal related to cell switching from a serving cell, the processor (400) may control the communication circuit (410) to perform cell switching to a candidate cell (e.g., the second cell (202) or the third cell (204) of FIG. 2) included in the control signal related to cell switching. For example, the communication circuit (410) may perform switching to a candidate cell included in the control signal related to cell switching based on configuration information related to at least one candidate cell acquired from the serving cell and synchronization with each candidate cell. For example, when DL and / or UL synchronization with a candidate cell is not performed, the communication circuit (410) may additionally perform DL and / or UL synchronization through a RACH procedure with the candidate cell.

[0089] According to one embodiment, the communication circuit (410) may perform wireless communication between the electronic device (101) and an external device (e.g., the electronic device (102 or 104) of FIG. 1, the first cell (200), the second cell (202), or the third cell (204) of FIG. 2, or the fourth cell (300), the fifth cell (302), or the sixth cell (304) of FIG. 3). For example, the wireless communication may include a series of operations for transmitting and / or receiving messages.

[0090] According to one embodiment, the memory (420) may store various data used by at least one component (e.g., the processor (400) and / or the communication circuit (410)) of the electronic device (101). For example, the memory (420) may store various instructions that may be executed by the processor (400). For example, the instructions may be executed individually or collectively by the processor (400) (e.g., at least one processor).

[0091] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, or FIG. 4) may include communication circuitry (e.g., the wireless communication module (192) of FIG. 1 or the communication circuitry (410) of FIG. 4), at least one processor including a processing circuitry (e.g., the processor (120) of FIG. 1 or the processor (400) of FIG. 4), and a memory (e.g., the memory (130) of FIG. 1 or the memory (420) of FIG. 4). According to one embodiment, the memory may store instructions that, when individually or collectively executed by the at least one processor, cause the electronic device to check a traffic status with a serving cell when it is determined that a measurement report event related to at least one candidate cell has occurred in a communication environment in which a cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2). According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to update a measurement result associated with at least one candidate cell below a specified threshold value so as to prevent the electronic device from attempting a cell change in the serving cell if the electronic device determines that an event related to updating a measurement report has occurred based on a traffic status with the serving cell. According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to transmit a measurement result associated with at least one updated candidate cell to the serving cell so as to prevent the electronic device from attempting a cell change in the serving cell.

[0092] According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to obtain configuration information related to at least one candidate cell from the serving cell while connected to the serving cell. According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to perform synchronization related to at least one of a downlink (DL) or an uplink (UL) with the at least one candidate cell.

[0093] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine that an event related to updating a measurement report has occurred if the amount of traffic with the serving cell is estimated to be less than or equal to a specified threshold amount for a first specified time period based on a determination that a measurement report event related to at least one candidate cell has occurred.

[0094] According to one embodiment, the designated first time may be set based on a time interval set for switching an RRC (radio resource control) state with a serving cell.

[0095] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine that an event related to updating a measurement report has occurred when the amount of traffic with the serving cell is determined to be less than or equal to a specified threshold amount for a second time period based on determining that a measurement report event related to at least one candidate cell has occurred.

[0096] According to one embodiment, the specified reference value may be set based on the measurement results of the serving cell.

[0097] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to transmit measurement results related to at least one candidate cell to the serving cell when it is determined that no event related to updating a measurement report has occurred based on the amount of traffic with the serving cell.

[0098] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine that a measurement report event has occurred when a measurement report cycle associated with at least one candidate cell acquired from a serving cell arrives in a communication environment performing cell change through signaling of L1 and / or L2.

[0099] FIG. 5 is a flowchart (500) for reporting measurement results in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 5 may be the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, or FIG. 4.

[0100] According to one embodiment referring to FIG. 5, the electronic device (e.g., the processor (120) of FIG. 1 or the processor (400) of FIG. 4) may determine, in operation 501, whether a designated second measurement report event has occurred. For example, the second measurement report event may be determined to have occurred when a measurement report cycle associated with the candidate cell (e.g., an L1 measurement report cycle) has arrived. For example, the second measurement report event may be determined not to have occurred when a measurement report cycle associated with the candidate cell (e.g., an L1 measurement report cycle) has not arrived.

[0101] For example, the processor (400) may control the communication circuit (410) to transmit the L3 measurement result to the serving cell (e.g., the first cell (200) of FIG. 2 or the fourth cell (300) of FIG. 3) in a connected state (e.g., an RRC connection state). For example, the processor (400) may obtain configuration information related to at least one candidate cell for LTM (L1 / L2 triggered mobility or lower layer triggered mobility) from the serving cell through the communication circuit (410). For example, the processor (400) may control the communication circuit (410) to perform L1 measurement on the serving cell and at least one candidate cell based on the configuration information related to the at least one candidate cell. For example, the processor (400) may determine whether an L1 measurement reporting cycle (or time point) has arrived based on the configuration information related to the at least one candidate cell. For example, LTM may include a series of operations for switching (or moving) a cell (or serving cell) of an electronic device through signaling at a layer lower than L3 (layer 3). For example, the signaling at a layer lower than L3 may include signaling of L1 or signaling of L1 and L2. For example, L1 may include a physical layer of the electronic device (101). For example, L2 may include at least one of a media access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, or a service data adaptation protocol (SDAP) layer. For example, configuration information related to at least one candidate cell may include information related to a frequency of the candidate cell, a synchronization signal (e.g., a synchronization signal block (SSB)), or L1 measurement.For example, information related to L1 measurement may include at least one of an L1 measurement time point (or cycle) or an L1 measurement report time point (or cycle). For example, the candidate cell may include at least one cell (e.g., the second cell (202) and the third cell (204) of FIG. 2 or the fifth cell (302) and the sixth cell (304) of FIG. 3) whose L3 channel measurement result exceeds a designated first reference value among cells (e.g., neighboring cells) accessible to the electronic device (101). For example, the channel measurement result may include at least one of a received signal strength indication (RSSI), a reference signal received quality (RSRQ), a reference signal received power (RSRP), a signal to noise ratio (SNR), a signal to interference and noise ratio (SINR), a quality of service (QoS), or a bit error rate (BER) of the cell measured by the electronic device (101).

[0102] In one embodiment, the electronic device (e.g., processor (120 or 400)) may terminate one embodiment for reporting measurement results if it determines that a specified second measurement report event has not occurred (e.g., 'NO' in operation 501). For example, the processor (400) may control the communication circuit (410) to perform L1 measurements for the serving cell and the at least one candidate cell based on configuration information associated with the at least one candidate cell until a measurement report cycle (or time point) associated with the candidate cell arrives.

[0103] According to one embodiment, when the electronic device (e.g., processor (120 or 400)) determines that a designated second measurement report event has occurred (e.g., 'Yes' in operation 501), in operation 503, the electronic device (101) may check a traffic status (e.g., traffic amount) of the serving cell. For example, the traffic status may include a traffic status in uplink and / or downlink that is continuously or periodically monitored while the electronic device (101) is connected to the serving cell to determine whether a cell switching based on LTM is required. For example, the traffic status may be checked (or estimated) based on at least one of an amount of data that the electronic device (101) transmits and / or receives with the serving cell, a scheduling rate, a size of a transmission block (TB), or a buffer status.

[0104] According to one embodiment, the electronic device (e.g., processor (120 or 400)) may determine, at operation 505, whether a specified measurement result update event has occurred based on the traffic status of the electronic device (101) and the serving cell. For example, the processor (400) may determine that the specified measurement result update event has not occurred if it is determined that traffic of the electronic device (101) exists at the time of L1 measurement reporting based on the traffic monitoring result. For example, a state in which traffic exists may include a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount during a specified first reference time period prior to the L1 measurement report time period, a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount, and a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time period is estimated to exceed a specified reference traffic amount. For example, the specified second reference time period may be set based on a reference time (e.g., an inactivity timer's running time) set to determine whether the electronic device (101) in an RRC connected state transitions to an RRC valid state or an RRC inactive state. For example, a specified baseline traffic volume may represent a set threshold value (e.g., 0) for determining whether a specified measurement result update event occurs.

[0105] For example, if the processor (400) determines that there is no traffic of the electronic device (101) at the time of the L1 measurement report based on the result of monitoring the traffic, the processor (400) may determine that a specified measurement result update event has occurred. For example, the state in which there is no traffic may include a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified first reference time period prior to the L1 measurement report time period is less than or equal to a specified reference traffic amount, a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time period is estimated to be less than or equal to a specified reference traffic amount.

[0106] According to one embodiment, if the electronic device (e.g., processor (120 or 400)) determines that a designated measurement result update event has occurred (e.g., 'Yes' in operation 505), in operation 507, the electronic device may update the L1 measurement results associated with the candidate cell. For example, if the processor (400) determines that the designated measurement result update event has occurred, the processor (400) may determine to operate in a restricted LTM mode. Based on the operation in the restricted LTE mode, the processor (400) may update the L1 measurement results associated with the candidate cell to a designated second reference value to prevent the electronic device (101) from attempting a cell switch in the serving cell. For example, the designated second reference value may include a value lower than a channel state of the first cell (e.g., serving cell) (200) or a designated minimum value.

[0107] According to one embodiment, an electronic device (e.g., processor (120 or 400)) may transmit, at operation 509, an L1 measurement result associated with a serving cell and an updated L1 measurement result associated with at least one candidate cell to the serving cell. For example, the updated L1 measurement result associated with the candidate cell may include a difference value of an L1 measurement result associated with the serving cell, as shown in Table 1 below.

[0108] CSI report numberCSI FieldsCSI report #nSSBRI #1SSBRI #2SSBRI #3RSRP #1DIFFRSRP_15 (△ -30dB)DIFFRSRP_15 (△ -30dB)

[0109] For example, SSBRI#i may include identification information of the ith cell (e.g., serving cell and candidate cell), RSRP #1 may include channel state information of the serving cell, and DIFFRSRP_15 (△ -30dB) may include a difference value between an L1 measurement result related to the serving cell and an updated L1 measurement result of the ith candidate cell.

[0110] According to one embodiment, if the electronic device (e.g., processor (120 or 400)) determines that a specified measurement result update event has not occurred (e.g., 'NO' in operation 505), then at 509, the electronic device may transmit L1 measurement results associated with the serving cell and at least one candidate cell to the serving cell. For example, the L1 measurement results associated with the candidate cell may include a difference value of the L1 measurement results associated with the serving cell, as shown in Table 2 below.

[0111] CSI report numberCSI FieldsCSI report #nSSBRI #1SSBRI #2SSBRI #3RSRP #1differential RSRP #2differential RSRP #3

[0112] For example, SSBRI#i may include identification information of the ith cell (e.g., serving cell and candidate cell), RSRP #1 may include channel state information of the serving cell, and differential RSRP#i may include a difference value between an L1 measurement result related to the serving cell and an L1 measurement result of the ith candidate cell.

[0113] FIG. 6 is a flowchart (600) for verifying a measurement reporting cycle in an electronic device in an LTM environment according to one embodiment. For example, at least a portion of FIG. 6 may include detailed operations of operation 501 of FIG. 5 . In the following embodiments, the operations may be performed sequentially, but are not necessarily sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 6 may be the electronic device (101) of FIG. 1 , FIG. 2 , FIG. 3 , or FIG. 4 .

[0114] According to one embodiment referring to FIG. 6, an electronic device (e.g., a processor (120) of FIG. 1 or a processor (400) of FIG. 4) may, at operation 601, obtain configuration information related to a candidate cell from a serving cell (e.g., a first cell (200) of FIG. 2 or a fourth cell (300) of FIG. 3) to which the electronic device (101) is connected. For example, the processor (400) may control a communication circuit (410) to perform L3 channel measurement on the serving cell and cells (e.g., neighboring cells) to which the electronic device (101) is connected based on configuration information related to L3 channel measurement obtained from the serving cell. For example, the L3 channel measurement may include a series of operations of measuring a channel state of a cell for a specified time in L3.

[0115] For example, the processor (400) may determine whether a specified first measurement report event occurs based on the L3 channel measurement result. If the processor (400) determines that the specified first measurement report event occurs, the processor (400) may control the communication circuit (410) to transmit the L3 channel measurement result to the serving cell. For example, the specified first measurement report event may occur when the channel status of the serving cell is lower than a specified third reference value based on the L3 channel measurement result. For example, the specified first measurement report event may occur when, among cells accessible to the electronic device (101), there exists a cell whose channel status is higher than the specified third reference value than the channel status of the serving cell based on the L3 channel measurement result.

[0116] For example, the processor (400) may obtain configuration information related to a candidate cell for LTM (L1 / L2 triggered mobility or lower layer triggered mobility) from the serving cell through the communication circuit (410) based on the L3 channel measurement result. For example, the configuration information related to the candidate cell may include information related to the presence or absence of the candidate cell, the frequency of the candidate cell, a synchronization signal (e.g., SSB (synchronization signal block)), or L1 measurement. For example, the information related to the L1 measurement may include at least one of an L1 measurement time point (or period) or an L1 measurement report time point (or period). For example, the candidate cell may include at least one cell (e.g., the second cell (202) and the third cell (204) of FIG. 2 or the fifth cell (302) and the cell (304) of FIG. 3) among the cells (e.g., neighboring cells) to which the electronic device (101) can connect, the L3 channel measurement result of which exceeds a specified first reference value.

[0117] For example, the processor (400) may control the communication circuit (410) to perform L1 measurements for a serving cell and at least one candidate cell based on an L1 measurement time point (or cycle) included in configuration information related to the candidate cell.

[0118] According to one embodiment, an electronic device (e.g., processor (120 or 400)) may determine, at operation 603, whether at least one candidate cell is set to perform cell switching based on LTM based on configuration information associated with the candidate cell.

[0119] According to one embodiment, the electronic device (e.g., processor (120 or 400)) may terminate one embodiment for checking the measurement reporting cycle if at least one candidate cell for performing cell switching based on LTM is not set (e.g., 'No' in operation 603). For example, the processor (400) may determine not to perform cell switching based on LTM if the configuration information related to the candidate cell acquired from the serving cell includes information on whether the candidate cell is not set or whether the candidate cell is released. If the processor (400) determines not to perform cell switching based on LTM, the processor (400) may control the communication circuit (410) to limit L1 measurements for cell switching based on LTM.

[0120] According to one embodiment, when at least one candidate cell for performing cell switching based on LTM is configured (e.g., 'Yes' in operation 603), in operation 605, the electronic device (e.g., the processor 120 or 400) may perform synchronization with at least one candidate cell based on configuration information associated with the candidate cell. For example, the processor (400) may receive a synchronization signal (e.g., SSB) of the at least one candidate cell through the communication circuit (410) based on information associated with the synchronization signal included in the configuration information associated with the candidate cell. The processor (400) may perform DL synchronization with each candidate cell based on the synchronization signal of the at least one candidate cell. For example, the processor (400) may control the communication circuit (410) to transmit information associated with a random access channel (RACH) (e.g., a RACH preamble) to each of the at least one candidate cell.

[0121] According to one embodiment, the electronic device (e.g., processor (120 or 400)) may determine, at operation 607, whether a specified second measurement report event has occurred based on configuration information associated with at least one candidate cell.

[0122] According to one embodiment, the electronic device (101) can perform UL synchronization with a candidate cell based on a RACH response signal included in a cell switching-related control signal that instructs cell switching of the electronic device (101) received from a serving cell.

[0123] FIG. 7 is a flowchart (700) for selectively reporting measurement results related to a candidate cell in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 7 may be the electronic device (101) of FIG. 1 , FIG. 2 , FIG. 3 , or FIG. 4 .

[0124] According to one embodiment referring to FIG. 7, the electronic device (e.g., the processor (120) of FIG. 1 or the processor (400) of FIG. 4) may determine, in operation 701, whether a designated second measurement report event occurs. For example, the processor (400) may determine, as in operations 601 to 607 of FIG. 6, whether the designated second measurement report event occurs based on configuration information related to at least one candidate cell acquired from a serving cell (e.g., the first cell (200) of FIG. 2 or the fourth cell (300) of FIG. 3). For example, the second measurement report event may be determined to have occurred when a measurement report cycle (e.g., an L1 measurement report cycle) related to the candidate cell arrives. For example, the second measurement report event may be determined not to have occurred when a measurement report cycle (e.g., an L1 measurement report cycle) related to the candidate cell does not arrive.

[0125] In one embodiment, the electronic device (e.g., processor (120 or 400)) may terminate one embodiment for reporting measurement results if it determines that a specified second measurement report event has not occurred (e.g., 'NO' in operation 701). For example, the processor (400) may control the communication circuit (410) to perform L1 measurements for the serving cell and the at least one candidate cell based on configuration information associated with the at least one candidate cell until a measurement report cycle (or time point) associated with the candidate cell arrives.

[0126] According to one embodiment, when the electronic device (e.g., processor (120 or 400)) determines that a designated second measurement report event has occurred (e.g., 'Yes' in operation 701), in operation 703, the electronic device (101) may check a traffic status (e.g., traffic amount) of the serving cell. For example, the traffic status may include a traffic status in uplink and / or downlink that is continuously or periodically monitored while the electronic device (101) is connected to the serving cell to determine whether a cell switching based on LTM is required. For example, the traffic status may be checked (or estimated) based on at least one of an amount of data that the electronic device (101) transmits and / or receives with the serving cell, a scheduling rate, a size of a transmission block (TB), or a buffer status.

[0127] According to one embodiment, the electronic device (e.g., processor (120 or 400)) may determine, at operation 705, whether a specified measurement result update event has occurred based on the traffic status of the electronic device (101) and the serving cell. For example, the processor (400) may determine that the specified measurement result update event has not occurred if it is determined that traffic of the electronic device (101) exists at the time of L1 measurement reporting based on the traffic monitoring result. For example, a state in which traffic exists may include a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount during a specified first reference time period prior to the L1 measurement report time period, a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount, and a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time period is estimated to exceed a specified reference traffic amount. For example, the specified second reference time period may be set based on a reference time (e.g., an inactivity timer's running time) set to determine whether the electronic device (101) in an RRC connected state transitions to an RRC valid state or an RRC inactive state. For example, a specified baseline traffic volume may represent a set threshold value (e.g., 0) for determining whether a specified measurement result update event occurs.

[0128] For example, if the processor (400) determines that there is no traffic of the electronic device (101) at the time of the L1 measurement report based on the result of monitoring the traffic, the processor (400) may determine that a specified measurement result update event has occurred. For example, the state in which there is no traffic may include a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified first reference time period prior to the L1 measurement report time period is less than or equal to a specified reference traffic amount, a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time period is estimated to be less than or equal to a specified reference traffic amount.

[0129] According to one embodiment, when the electronic device (e.g., processor (120 or 400)) determines that a designated measurement result update event has occurred (e.g., 'Yes' in operation 705), in operation 707, the electronic device may transmit L1 measurement results associated with the serving cell, excluding L1 measurement results associated with the candidate cell, to the serving cell to prevent the serving cell from attempting a cell switch associated with the electronic device (101). For example, when the processor (400) determines that a designated measurement result update event has occurred, the processor (400) may determine to operate in a restricted LTM mode. The processor (400) may control the communication circuit (410) to restrict transmission of L1 measurement results associated with the candidate cell based on the operation in the restricted LTE mode. For example, the processor (400) may control the communication circuit (410) to transmit to the serving cell an L1 measurement result configured to normally include an L1 measurement result related to a serving cell configured as shown in Table 3 below, but not to include an L1 measurement result related to a candidate cell.

[0130] CSI report numberCSI FieldsCSI report #nSSBRI #1RSRP #1

[0131] According to one embodiment, if the electronic device (e.g., processor (120 or 400)) determines that a specified measurement result update event has not occurred (e.g., 'NO' in operation 705), then at 709, the electronic device may transmit L1 measurement results associated with the serving cell and at least one candidate cell to the serving cell.

[0132] FIG. 8 is a flowchart (800) for selectively reporting measurement results in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 8 may be the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, or FIG. 4.

[0133] According to one embodiment referring to FIG. 8, the electronic device (e.g., the processor (120) of FIG. 1 or the processor (400) of FIG. 4) may determine, in operation 801, whether a designated second measurement report event occurs. For example, the processor (400) may determine, as in operations 601 to 607 of FIG. 6, whether the designated second measurement report event occurs based on configuration information related to at least one candidate cell acquired from a serving cell (e.g., the first cell (200) of FIG. 2 or the fourth cell (300) of FIG. 3). For example, the second measurement report event may be determined to have occurred when a measurement report cycle (e.g., an L1 measurement report cycle) related to the candidate cell arrives. For example, the second measurement report event may be determined not to have occurred when a measurement report cycle (e.g., an L1 measurement report cycle) related to the candidate cell does not arrive.

[0134] In one embodiment, the electronic device (e.g., processor (120 or 400)) may terminate one embodiment for reporting measurement results if it determines that a specified second measurement report event has not occurred (e.g., 'NO' in operation 801). For example, the processor (400) may control the communication circuit (410) to perform L1 measurements for the serving cell and the at least one candidate cell based on configuration information associated with the at least one candidate cell until a measurement report cycle (or time point) associated with the candidate cell arrives.

[0135] According to one embodiment, when the electronic device (e.g., processor (120 or 400)) determines that a designated second measurement report event has occurred (e.g., 'Yes' in operation 801), in operation 803, the electronic device (101) may check a traffic status (e.g., traffic amount) of the serving cell. For example, the traffic status may include a traffic status in uplink and / or downlink that is continuously or periodically monitored while the electronic device (101) is connected to the serving cell to determine whether a cell switch based on LTM is required. For example, the traffic status may be checked (or estimated) based on at least one of an amount of data that the electronic device (101) transmits and / or receives with the serving cell, a scheduling rate, a size of TB, or a buffer status.

[0136] According to one embodiment, the electronic device (e.g., processor (120 or 400)) may determine, at operation 805, whether a specified measurement result update event has occurred based on the traffic status of the electronic device (101) and the serving cell. For example, if the processor (400) determines that traffic of the electronic device (101) exists at the time of L1 measurement reporting based on the traffic monitoring result, the processor (400) may determine that the specified measurement result update event has not occurred. For example, a state in which traffic exists may include a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount during a specified first reference time period prior to the L1 measurement report time period, a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount, and a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time period is estimated to exceed a specified reference traffic amount. For example, the specified second reference time period may be set based on a reference time (e.g., an inactivity timer's running time) set to determine whether the electronic device (101) in an RRC connected state transitions to an RRC valid state or an RRC inactive state. For example, a specified baseline traffic volume may represent a set threshold value (e.g., 0) for determining whether a specified measurement result update event occurs.

[0137] For example, if the processor (400) determines that there is no traffic of the electronic device (101) at the time of the L1 measurement report based on the result of monitoring the traffic, the processor (400) may determine that a specified measurement result update event has occurred. For example, the state in which there is no traffic may include a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified first reference time period prior to the L1 measurement report time period is less than or equal to a specified reference traffic amount, a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and / or from the serving cell during a specified second reference time period after the L1 measurement report time period is estimated to be less than or equal to a specified reference traffic amount.

[0138] According to one embodiment, when the electronic device (e.g., processor (120 or 400)) determines that a designated measurement result update event has occurred (e.g., 'Yes' in operation 805), in operation 807, the electronic device may restrict transmission of L1 measurement results to prevent the serving cell from attempting a cell switch associated with the electronic device (101). For example, when event-based L1 measurement reporting is configured from the serving cell, the processor (400) may control the communication circuit (410) to restrict transmission of L1 measurement results based on the occurrence of a designated measurement result update event. For example, the event-based L1 measurement reporting may include a series of operations for transmitting (or reporting) the L1 measurement results to the serving cell based on whether a designated third measurement report event has occurred based on the L1 measurement results of the serving cell and / or candidate cells. For example, the designated third measurement report event may be generated when the channel status of the serving cell is lower than a designated fourth threshold value based on the L1 measurement results. For example, a designated third measurement report event may occur when there is a candidate cell among the candidate cells whose L1 measurement result is greater than or equal to a designated fourth reference value than the L1 measurement result of the serving cell.

[0139] According to one embodiment, if the electronic device (e.g., processor (120 or 400)) determines that a specified measurement result update event has not occurred (e.g., 'NO' of operation 805), then at 809, the electronic device may transmit L1 measurement results associated with the serving cell and at least one candidate cell to the serving cell.

[0140] FIG. 9 is an example for cell switching in an electronic device according to one embodiment.

[0141] According to one embodiment referring to FIG. 9, an electronic device (101) may be connected to a serving cell (e.g., the first cell (200) of FIG. 2 or the fourth cell (300) of FIG. 3) of a network (900) (e.g., operation 911). For example, the network (900) may include a serving cell and at least one candidate cell as a network entity supporting wireless communication of the electronic device (101).

[0142] According to one embodiment, the electronic device (101) may transmit L3 measurement results related to the serving cell and cells (e.g., neighboring cells) that the electronic device (101) can access to the serving cell while connected to the serving cell (e.g., operation 913). For example, the electronic device (101) may perform L3 channel measurements for the serving cell and cells (e.g., neighboring cells) that the electronic device (101) can access based on configuration information related to L3 channel measurements acquired from the serving cell. For example, the L3 channel measurements may include a series of operations for measuring a channel state of a cell for a specified time in L3.

[0143] For example, if the electronic device (101) determines that a designated first measurement report event has occurred based on the L3 channel measurement result, the electronic device (101) may transmit the L3 channel measurement result to the serving cell. For example, the designated first measurement report event may occur when the channel status of the serving cell is lower than a designated third reference value based on the L3 channel measurement result. For example, the designated first measurement report event may occur when, among the cells accessible to the electronic device (101), there exists a cell whose channel status is higher than the designated third reference value than the channel status of the serving cell based on the L3 channel measurement result.

[0144] According to one embodiment, the serving cell of the network (900) may identify (or select) at least one candidate cell (e.g., the second cell (202) and / or the third cell (204) of FIG. 2 or the fifth cell (302) and / or the sixth cell (304) of FIG. 3) to which the electronic device (101) can switch via LTM based on the L3 measurement result received from the electronic device (101) (e.g., operation 915). For example, the candidate cell may include at least one cell among cells (e.g., neighboring cells) accessible to the electronic device (101) whose L3 channel measurement result exceeds a designated first reference value. For example, the channel measurement result may include at least one of the received signal strength indication (RSSI), reference signal received quality (RSRQ), reference signal received power (RSRP), signal to noise ratio (SNR), signal to interference and noise ratio (SINR), quality of service (QoS), or bit error rate (BER) of the cell measured by the electronic device (101).

[0145] According to one embodiment, a serving cell of a network (900) may transmit an RRC control signal (e.g., RRC reconfiguration) to an electronic device (101) that includes configuration information related to at least one candidate cell (e.g., operation 917). For example, the configuration information related to at least one candidate cell may include information related to a frequency of the candidate cell, a synchronization signal (e.g., SSB), or L1 measurement. For example, the information related to the L1 measurement may include at least one of an L1 measurement time point (or period) or an L1 measurement report time point (or period).

[0146] According to one embodiment, when the electronic device (101) receives an RRC control signal from a serving cell, it may transmit an RRC response signal (e.g., RRC reconfiguration complete) to the serving cell of the network (900) (e.g., operation 919). For example, when the electronic device (101) successfully decode the RRC control signal received from the serving cell, it may transmit the RRC response signal to the serving cell of the network (900).

[0147] According to one embodiment, the electronic device (101) may perform downlink (DL) and / or uplink (UL) synchronization with at least one candidate cell based on configuration information associated with the at least one candidate cell (e.g., operation 921). For example, the electronic device (101) may receive a synchronization signal of at least one candidate cell based on information associated with the synchronization signal included in the configuration information associated with the at least one candidate cell. The electronic device (101) may perform DL synchronization with each candidate cell based on the synchronization signal of the at least one candidate cell. For example, the electronic device (101) may transmit information associated with a random access channel (RACH) (e.g., a RACH preamble) to each candidate cell for UL synchronization with the at least one candidate cell.

[0148] According to one embodiment, the electronic device (101) may perform L1 measurements on a serving cell and at least one candidate cell based on configuration information related to at least one candidate cell. For example, when an L1 channel time point (or period) acquired from the serving cell arrives, the electronic device (101) may perform L1 channel measurements on the serving cell and at least one candidate cell (e.g., the second cell (202) and the third cell (204) of FIG. 2 or the fifth cell (302) and the sixth cell (304) of FIG. 3). For example, the L1 channel measurements may include a series of operations for measuring a channel state of a cell based on a signal processed in L1 (layer 1).

[0149] According to one embodiment, when the electronic device (101) determines that a designated second measurement report event has occurred, the electronic device (101) may adaptively perform reporting of L1 measurement results based on a traffic status of the electronic device (101) (e.g., operation 923). For example, the electronic device (101) may determine that the designated second measurement report event has occurred when an L1 measurement report time (or cycle) arrives. For example, the traffic status may include traffic status in uplink and / or downlink that is continuously or periodically monitored while the electronic device (101) is connected to a serving cell to determine whether cell switching based on LTM is required. For example, the traffic status may be determined based on the amount of data that the electronic device (101) transmits and / or receives with the serving cell. For example, the traffic status may be determined (or estimated) based on at least one of a size of a transmission block (TB), a scheduling rate, or a buffer status.

[0150] For example, the electronic device (101) can determine whether a specified measurement result update event occurs based on the traffic status of the electronic device (101). For example, if the electronic device (101) determines that traffic of the electronic device (101) exists at the time of L1 measurement reporting, the electronic device (101) can determine that a specified measurement result update event has not occurred. For example, a state in which traffic exists may include a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount during a first reference time period prior to the L1 measurement reporting time period based on the monitoring results of the traffic, a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount during a second reference time period after the L1 measurement reporting time period, and a state in which the amount of data (e.g., an average value) transmitted and / or received by the electronic device (101) to and / or from the serving cell exceeds a specified reference traffic amount. For example, the specified reference traffic amount may represent a reference value (e.g., 0) set to determine whether a specified measurement result update event occurs.

[0151] For example, if the electronic device (101) determines that there is no traffic of the electronic device (101) at the time of L1 measurement reporting based on the result of monitoring traffic, the electronic device (101) may determine that a specified measurement result update event has occurred. For example, the state of no traffic may include a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and from the serving cell during a specified first reference time prior to the time of L1 measurement reporting based on the result of monitoring traffic is less than or equal to the specified reference traffic amount, a state in which the amount (e.g., average value) of data transmitted and / or received by the electronic device (101) to and from the serving cell during a specified second reference time after the time of L1 measurement reporting is estimated to be less than or equal to the specified reference traffic amount. For example, the designated second reference time may be set based on a reference time (e.g., an operating time of an inactivity timer) set to determine whether an electronic device (101) in an RRC (radio resource control) connected state has transitioned to an RRC idle state or an RRC inactive state.

[0152] For example, if the electronic device (101) determines that a specified measurement result update event has not occurred based on the traffic status of the electronic device (101), the electronic device (101) may determine that it operates in LTM mode. The electronic device (101) may transmit L1 measurement results related to the serving cell and at least one candidate cell to the serving cell based on the LTM mode.

[0153] For example, if the electronic device (101) determines that a specified measurement result update event has occurred based on the traffic status of the electronic device (101), the electronic device (101) may determine that it operates in a restricted LTM mode. The electronic device (101) may update the L1 measurement results associated with at least one candidate cell to a specified second reference value to prevent a cell switch associated with the electronic device (101) from being attempted in the serving cell based on the restricted LTM mode. The electronic device (101) may transmit the L1 measurement results associated with the serving cell and the updated L1 measurement results associated with the at least one candidate cell to the serving cell. For example, the specified second reference value may include a value lower than the channel status of the first cell (e.g., the serving cell) (200) or a specified minimum value.

[0154] For example, if the electronic device (101) determines that a specified measurement result update event has occurred based on the traffic status of the electronic device (101), the electronic device (101) may determine that it operates in a restricted LTM mode. Based on the restricted LTM mode, the electronic device (101) may transmit L1 measurement results related to the serving cell, excluding updated L1 measurement results related to at least one candidate cell, to the serving cell to prevent cell switching related to the electronic device (101) from being attempted in the serving cell. For example, L1 measurement results related to at least one candidate cell may be restricted from being transmitted to the serving cell.

[0155] For example, if the electronic device (101) determines that a specified measurement result update event has occurred based on the traffic status of the electronic device (101), the electronic device (101) may determine that it operates in a restricted LTM mode. Based on the restricted LTM mode, the electronic device (101) may restrict the transmission of L1 measurement results to prevent cell switching related to the electronic device (101) from being attempted in the serving cell.

[0156] According to one embodiment, the serving cell of the network (900) may determine whether cell switching of the electronic device (101) is required based on the L1 measurement result received from the electronic device (101) (e.g., operation 925). For example, the serving cell may determine that cell switching of the electronic device (101) is required if there is a candidate cell among at least one candidate cell that has an L1 measurement result that is equal to or greater than a designated fourth reference value than the L1 measurement result of the serving cell. For example, a candidate cell that has an L1 measurement result that is equal to or greater than a designated fourth reference value than the L1 measurement result of the serving cell may be selected (or determined) as a cell for which the electronic device (101) performs cell switching.

[0157] For example, the serving cell may determine that cell switching of the electronic device (101) is not necessary if there is no candidate cell among at least one candidate cell that has an L1 measurement result that is higher than the designated fifth reference value than the L1 measurement result of the serving cell.

[0158] For example, the serving cell may determine that cell switching of the electronic device (101) is not necessary if no L1 measurement result related to at least one candidate cell is confirmed.

[0159] According to one embodiment, when the serving cell of the network (900) determines that a cell switch of the electronic device (101) is required, the serving cell may transmit a control signal related to the cell switch (e.g., a cell switch command) to the electronic device (101) (e.g., operation 927). For example, the control signal related to the cell switch may include information related to a candidate cell (e.g., the second cell (202) or the third cell (204) of FIG. 2 , or the fifth cell (302) or the sixth cell (304) of FIG. 3 ) for the electronic device (101) to perform the cell switch.

[0160] According to one embodiment, when the electronic device (101) receives a control signal related to cell switching from a serving cell, the electronic device (101) may perform cell switching to a candidate cell included in the control signal related to cell switching (e.g., operation 929). For example, the electronic device (101) may perform UL synchronization with the candidate cell for performing cell switching based on a response signal to information related to RACH included in the control signal related to cell switching. The electronic device (101) may perform switching (or moving) to the candidate cell included in the control signal related to cell switching based on configuration information related to the candidate cell obtained from the serving cell and synchronization information with the candidate cell.

[0161] According to one embodiment, if DL and / or UL synchronization with a candidate cell for performing cell switching is not performed, the electronic device (101) may additionally perform DL and / or UL synchronization through a RACH procedure with the candidate cell.

[0162] According to one embodiment, a method of operating an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, or FIG. 4) may include an operation of checking a traffic status with a serving cell when it is determined that a measurement report event related to at least one candidate cell has occurred in a communication environment in which a cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2). According to one embodiment, the method of operating the electronic device may include an operation of updating a measurement result related to at least one candidate cell to a specified reference value or less so as to prevent a cell change attempt related to the electronic device in the serving cell when it is determined that an event related to an update of a measurement report has occurred based on a traffic status with the serving cell. According to one embodiment, the method of operating the electronic device may include an operation of transmitting, to the serving cell, the measurement result related to at least one candidate cell that has been updated so as to prevent a cell change attempt related to the electronic device in the serving cell.

[0163] According to one embodiment, a method of operating an electronic device may include an operation of acquiring configuration information related to at least one candidate cell from a serving cell while connected to the serving cell based on a communication environment in which a cell change is performed through signaling of L1 and / or L2. According to one embodiment, the method of operating an electronic device may include an operation of performing synchronization related to at least one of a downlink (DL) or an uplink (UL) with the at least one candidate cell.

[0164] According to one embodiment, a method of operating an electronic device may include determining that an event related to updating a measurement report has occurred when it is estimated that a traffic amount with a serving cell is less than or equal to a specified reference amount for a specified first time period based on a determination that a measurement report event related to at least one candidate cell has occurred.

[0165] According to one embodiment, the designated first time may be set based on a time interval set for switching an RRC (radio resource control) state with the serving cell.

[0166] According to one embodiment, a method of operating an electronic device may include determining that an event related to updating a measurement report has occurred when it is determined that a traffic volume with a serving cell is less than or equal to a specified reference amount for a specified second time based on a determination that a measurement report event related to at least one candidate cell has occurred.

[0167] According to one embodiment, the specified reference value may be set based on the measurement results of the serving cell.

[0168] According to one embodiment, a method of operating an electronic device may include transmitting measurement results related to at least one candidate cell to a serving cell when it is determined that no event related to updating a measurement report has occurred based on a traffic volume with a serving cell.

[0169] According to one embodiment, a method of operating an electronic device may include an operation of determining that a measurement report event has occurred when a measurement report period associated with at least one candidate cell acquired from a serving cell arrives in a communication environment performing cell change through signaling of L1 and / or L2.

[0170] The embodiments of the present invention disclosed in this specification and drawings are merely specific examples presented to easily explain the technical contents according to the embodiments of the present invention and to help understand the embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. Therefore, the scope of the embodiments of the present invention should be interpreted to include all changes or modified forms derived based on the technical idea of ​​the embodiments of the present invention, in addition to the embodiments disclosed herein.

Claims

1. In an electronic device (101), Communication circuit (410), At least one processor (400) comprising a processing circuit, and When executed individually or collectively by at least one processor (400), the electronic device (101), In a communication environment where cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2), if it is determined that a measurement report event related to at least one candidate cell has occurred, the traffic status with the serving cell is checked, If it is determined that an event related to updating a measurement report has occurred based on a traffic status with the serving cell, the measurement result related to at least one candidate cell is updated to a value below a specified reference value to prevent an attempt to change cells related to the electronic device in the serving cell. An electronic device (101) comprising a memory (420) storing instructions for transmitting measurement results related to at least one of the updated candidate cells to the serving cell.

2. In paragraph 1, The above memory (420), when executed individually or collectively by the at least one processor (400), the electronic device (101), While connected to the serving cell, obtain configuration information related to at least one candidate cell from the serving cell, An electronic device (101) storing instructions for performing synchronization related to at least one of a DL (downlink) or UL (uplink) with at least one candidate cell.

3. In paragraph 1, The above memory (420), when executed individually or collectively by the at least one processor (400), the electronic device (101), An electronic device (101) storing instructions that determine that an event related to updating the measurement report has occurred when it is estimated that the amount of traffic with the serving cell is less than or equal to a specified reference amount for a specified first time period based on a determination that a measurement report event related to at least one candidate cell has occurred.

4. In paragraph 3, The above-mentioned first time is an electronic device (101) set based on a time interval set for switching an RRC (radio resource control) state with the serving cell.

5. In paragraph 1, The above memory (420), when executed individually or collectively by the at least one processor (400), the electronic device (101), An electronic device (101) storing instructions that determine that an event related to updating the measurement report has occurred when it is determined that the amount of traffic with the serving cell is less than or equal to a specified reference amount for a specified second time period based on a determination that a measurement report event related to at least one candidate cell has occurred.

6. In paragraph 1, The above memory (420), when executed individually or collectively by the at least one processor (400), the electronic device (101), An electronic device (101) storing instructions for transmitting measurement results related to at least one candidate cell to the serving cell when it is determined that no event related to updating the measurement report has occurred based on the amount of traffic with the serving cell.

7. In paragraph 1, The above memory (420), when executed individually or collectively by the at least one processor (400), the electronic device (101), An electronic device (101) that determines that a measurement report event has occurred when a measurement report cycle related to at least one candidate cell acquired from the serving cell arrives in a communication environment performing cell change through signaling of the L1 and / or the L2.

8. In paragraph 1, The above memory (420), when executed individually or collectively by the at least one processor (400), the electronic device (101), An electronic device (101) including a memory (420) storing instructions for transmitting a measurement result related to the serving cell and a difference value between the measurement result related to the serving cell and the measurement result related to the at least one updated candidate cell to the serving cell.

9. In the operating method of the electronic device (101), An operation for checking the traffic status with a serving cell when it is determined that a measurement report event related to at least one candidate cell has occurred in a communication environment where cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2); If it is determined that an event related to updating a measurement report has occurred based on a traffic status with the serving cell, an operation of updating a measurement result related to at least one candidate cell to a specified reference value or less to prevent an attempt to change cells related to the electronic device in the serving cell; and A method comprising the action of transmitting measurement results related to at least one of the updated candidate cells to the serving cell.

10. In paragraph 9, An operation of acquiring configuration information related to at least one candidate cell from the serving cell while connected to the serving cell based on a communication environment that performs cell change through signaling of the L1 and / or the L2, and A method further comprising performing synchronization related to at least one of a downlink (DL) or an uplink (UL) with at least one candidate cell.

11. In paragraph 9, A method further comprising an action of determining that an event related to updating the measurement report has occurred if it is estimated that the amount of traffic with the serving cell is less than or equal to a specified reference amount for a specified first time period based on a determination that a measurement report event related to at least one candidate cell has occurred.

12. In paragraph 9, A method further comprising an action of determining that an event related to updating the measurement report has occurred when it is determined that the amount of traffic with the serving cell is less than or equal to a specified reference amount for a specified second time period based on a determination that a measurement report event related to at least one candidate cell has occurred.

13. In paragraph 9, A method further comprising the action of transmitting a measurement result related to at least one candidate cell to the serving cell when it is determined that no event related to updating a measurement report has occurred based on the amount of traffic with the serving cell.

14. In paragraph 9, A method further comprising an operation of determining that a measurement report event has occurred when a measurement report period related to at least one candidate cell acquired from the serving cell arrives in a communication environment performing cell change through signaling of the L1 and / or the L2.

15. In a non-transitory computer-readable storage medium (or computer program product) storing one or more programs, The above one or more programs, when executed by a processor of an electronic device, cause the electronic device to: An operation for checking the traffic status with a serving cell when it is determined that a measurement report event related to at least one candidate cell has occurred in a communication environment where cell change is performed through signaling of L1 (layer 1) and / or L2 (layer 2); If it is determined that an event related to updating a measurement report has occurred based on a traffic status with the serving cell, an operation of updating a measurement result related to at least one candidate cell to a specified reference value or less to prevent an attempt to change cells related to the electronic device in the serving cell; and A non-transitory computer-readable storage medium comprising instructions operable to transmit measurement results related to at least one of the updated candidate cells to the serving cell.

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