Terminal, terminal operating method, and communication system operating method

Abstract

A terminal, a method of operating a terminal, and a method of operating a communication system are provided. The terminal includes a radio frequency (RF) circuit including a low-power receiver and a main receiver, a memory configured to store first information indicating a performance of the low-power receiver, and a processor configured to determine an operation scheme for performing a radio resource management (RRM) measurement using at least one of the low-power receiver and the main receiver based on the first information.

Description

[0001] This application claims priority to Korean Patent Application No. 10-2024-0187662, filed on December 16, 2024, with the Korean Intellectual Property Office, and Korean Patent Application No. 10-2025-0036213, filed on March 20, 2025, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] This disclosure relates to terminals, methods of operating terminals, and methods of operating communication systems. Background Technology

[0003] Techniques such as Discontinuous Reception (DRX) and Extended Discontinuous Reception (eDRX) can be used to increase the wake-up period of the terminal's master receiver (i.e., the paging cycle) to reduce power consumption during paging reception operations. However, when the paging cycle is long, the master receiver's paging reception can be delayed. For example, a long paging cycle can significantly reduce power consumption during paging reception operations, but it is not suitable for low-latency applications (such as emergency message reception). The operation of the terminal's master receiver periodically waking up in each DRX cycle to check for the presence of a paging signal and demodulating the paging channel (PCH) to check if a paging signal actually exists is efficient in terms of latency, but it increases the terminal's power consumption. Furthermore, false alarms can occur in PCHs where a paging signal does not actually exist, resulting in wasted power in the terminal. To prevent this, techniques such as early paging indication or sub-packets have been proposed, but there are limitations to improving the terminal's power usage efficiency because of the process required for the master receiver to wake up and perform paging.

[0004] To compensate for the above drawbacks, the terminal's low-power receiver can be used specifically to receive signals related to paging commands. The low-power receiver can periodically receive low-power wake-up signals and, when a wake-up command is present in the low-power wake-up signal, wake up the main receiver to perform paging. Because the low-power receiver has limited functionality compared to the main receiver, it consumes less power than the main receiver, even though it wakes up periodically. Summary of the Invention

[0005] One or more embodiments provide a terminal for effectively improving power usage efficiency by determining the operating scheme of a low-power receiver and a master receiver based on the performance of the low-power receiver in relation to radio resource management (RRM) measurements and performing RRM measurements based on the determined operating scheme, and a terminal for transmitting a synchronization signal to the terminal's serving cell based on the performance of the terminal's low-power receiver.

[0006] According to one aspect of the embodiments, a terminal configured to communicate with a serving cell is provided, the terminal comprising: radio frequency (RF) circuitry including a low-power receiver and a main receiver; a memory configured to store first information indicating the performance of the low-power receiver; and a processor configured to determine, based on the first information, an operating scheme for performing radio resource management (RRM) measurements using at least one of the low-power receiver and the main receiver.

[0007] According to another aspect of the embodiments, an operating method for a terminal communicating with a serving cell is provided, the operating method comprising: determining an operating scheme for a low-power receiver and a primary receiver based on first information indicating the performance of a low-power receiver; and performing an RRM measurement using at least one of the low-power receiver and the primary receiver based on the determined operating scheme.

[0008] According to another aspect of the embodiments, a method of operating a communication system including terminals and a serving cell communicating with each other is provided, the method comprising: the terminal sending performance information including first information to the serving cell, the first information indicating the performance of a low-power receiver of the terminal; the terminal determining, based on the first information, an operating scheme for performing RRM measurements using at least one of the low-power receiver and the main receiver of the terminal; and the serving cell determining, based on the first information, a transmission scheme for transmitting a synchronization signal.

[0009] According to another aspect of the embodiments, a terminal configured to communicate with a serving cell is provided, the terminal comprising: an RF circuit including a low-power receiver and a main receiver, and a processor configured to: set multiple modes for the low-power receiver and the main receiver based on whether the low-power receiver supports a first RRM measurement for the serving cell and whether the low-power receiver supports a second RRM measurement for a co-frequency neighboring cell, wherein the processor is configured to: perform at least one of the first RRM measurement and the second RRM measurement individually using the low-power receiver or using the low-power receiver and the main receiver based on one of the multiple modes. Attached Figure Description

[0010] The above and other aspects and features will become clearer from the following description of embodiments taken in conjunction with the accompanying drawings.

[0011] Figure 1 This is a block diagram of a wireless communication system according to an embodiment.

[0012] Figure 2 This is a schematic block diagram of a terminal according to an embodiment.

[0013] Figure 3 This is a flowchart of the terminal operation method according to an embodiment.

[0014] Figure 4 This is a diagram of a first table describing low-power receiver information according to an embodiment.

[0015] Figure 5 This is a flowchart of the terminal operation method according to an embodiment.

[0016] Figure 6 This is a diagram of a second table describing low-power receiver information according to an embodiment.

[0017] Figure 7A , Figure 7B , Figure 7C , Figure 7D and Figure 7E This is a diagram illustrating an embodiment related to the first to fifth modes included in the operating scheme, according to an embodiment.

[0018] Figure 8 This is a diagram of the third table describing the operation scheme according to the embodiment.

[0019] Figure 9 This is a diagram illustrating an operation method of a terminal for controlling a low-power receiver and a main receiver based on a determined operation scheme, according to an embodiment.

[0020] Figure 10 This is a diagram of the fourth table showing the next mode that can be switched for each mode in the operation scheme according to the description of the embodiment.

[0021] Figure 11 This is a flowchart of the terminal operation method according to an embodiment.

[0022] Figure 12 According to the embodiments Figure 11 The flowchart of operation S310 in the process.

[0023] Figure 13 This is a diagram of the fifth table showing the switching conditions monitored for switching from the current mode to the next mode, according to the description of the embodiment.

[0024] Figure 14 This is a flowchart of the terminal operation method according to an embodiment.

[0025] Figure 15 This is a flowchart of the terminal operation method according to an embodiment.

[0026] Figure 16A and Figure 16B These are descriptions Figure 15 The diagram shows the sixth and seventh tables of a specific embodiment of operation S530.

[0027] Figure 17 This is a diagram of the eighth table describing low-power receiver information according to an embodiment.

[0028] Figure 18A , Figure 18B , Figure 18C , Figure 18D and Figure 18E This is a diagram illustrating embodiments related to the first to fifth modes included in the operating scheme, according to the embodiments.

[0029] Figure 19 This is a sequence diagram between the terminal and the serving cell according to an embodiment.

[0030] Figure 20 This is a block diagram of an electronic device according to an embodiment. Detailed Implementation

[0031] In the following detailed description, embodiments are given with reference to the accompanying drawings. The embodiments described herein are exemplary embodiments, and therefore, this disclosure is not limited thereto and may be implemented in various other forms. Each embodiment provided in the following description does not exclude association with one or more features of other examples or other embodiments also provided herein or not provided herein but consistent with this disclosure. When a statement such as “at least one of…” follows a list of elements, the statement modifies the entire list of elements rather than a single element in the list. For example, the statement “at least one of a, b, and c” should be understood to include: only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0032] Figure 1 This is a block diagram of a wireless communication system according to an embodiment.

[0033] In the following description, embodiments are presented from the perspective of wireless communication systems (WCS) based on new radio (NR) networks (particularly 3GPP versions). However, the embodiments are not limited to NR networks. The embodiments are also applied to other wireless communication systems with similar technical backgrounds or channel settings (e.g., cellular communication systems such as Long Term Evolution (LTE), LTE-A Advanced (LTE-A), WiBro, Global System for Mobile Communications (GSM), or next-generation communications including 6G) or near-field communication systems such as Bluetooth and Near Field Communication (NFC)).

[0034] Furthermore, the various functions described below may be implemented or supported by artificial intelligence technologies or one or more computer programs, each of which is configured with computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" mean one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof suitable for implementing appropriate computer-readable program code. The term "computer-readable program code" includes all kinds of computer code containing source code, object code, and executable code. The term "computer-readable medium" includes any type of medium accessible by a computer (such as read-only memory (ROM), random access memory (RAM), hard disk drive, optical disc (CD), digital video disc (DVD), or any other type of storage). "Non-transitory" computer-readable media does not include wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable media includes media on which data can be permanently stored, as well as media on which data can be stored and later rewritten (such as rewritable optical discs or erasable memory devices).

[0035] In the following embodiments, the hardware method is described as an example. However, embodiments may use both hardware and software.

[0036] Reference Figure 1 The WCS may include first base stations to third base stations 10, 20, and 30, and terminal 100. First base station 10 may typically represent a fixed station communicating with terminal 100 and / or second base station 20 and third base station 30, and may exchange control information and data through communication with terminal 100 and / or second base station 20 and third base station 30. For example, first base stations to third base stations 10, 20, and 30 may be referred to as Node B, Evolved Node B (eNB), Next Generation Node B (gNB), sector, site, Base Transceiver System (BTS), Access Point (AP), Relay Node, Remote Radio Head (RRH, also known as Remote Radio Head), Radio Unit (RU), Small Cell, Wireless Device, or Apparatus. As an example, first base station 10 may communicate with terminal 100 through first cell CELL#1, second base station 20 through second cell CELL#2, and third base station 30 through third cell CELL#3. However, although... Figure 1 The diagram illustrates that first base stations 10, 20, and 30 provide first cell to third cell CELL#1, CELL#2, and CELL#3, respectively, but this is merely an example, and the embodiments are not limited thereto. First base station 10 may also provide at least one of second cell CELL#2 and third cell CELL#3.

[0037] Terminal 100 may be fixed or mobile, and may refer to any device capable of transmitting and receiving data and / or control information communicatively with the first to third base stations 10, 20 and 30. For example, terminal 100 may be referred to as user equipment, mobile station, mobile terminal, user terminal, wireless communication device, wireless device, apparatus, portable device or wearable device.

[0038] Terminal 100 can connect to a first cell CELL#1 to perform communication with the first cell CELL#1, and the first cell CELL#1 can be referred to as the serving cell. The serving cell CELL#1 can communicate with terminal 100 using a first frequency band B#1 with a first bandwidth BW#1.

[0039] The second cell, CELL#2, can provide communication based on the first frequency band B#1 as a neighboring cell of the first cell, CELL#1. Here, the second cell, CELL#2, can use the same first frequency band B#1 as the serving cell, CELL#1, to provide communication, and the second cell, CELL#2, can be referred to as an intra-frequency neighboring cell.

[0040] The third cell, CELL#3, can provide communication based on the second frequency band B#2 as a neighboring cell of the first cell, CELL#1. Here, the third cell, CELL#3, can use a different second frequency band B#2 than the serving cell, CELL#1, to provide communication, and the third cell, CELL#3, can be referred to as an inter-frequency neighboring cell or a cross-radio access technology (cross-RAT) neighboring cell (also known as a cross-system neighboring cell).

[0041] The first bandwidth BW#1 of the first frequency band B#1 may differ from the second bandwidth BW#2 of the second frequency band B#2. As a specific example, the second frequency band B#2 may include a higher and wider bandwidth than the first frequency band B#1. However, this is merely an example, and it is understood that embodiments are not limited thereto.

[0042] In one embodiment, terminal 100 may include a low-power receiver LR and a main receiver MR, and the memory of terminal 100 (e.g., Figure 2 The memory 130 in the memory can store low-power receiver information LR_INFO, which indicates the performance of the low-power receiver LR. Here, the low-power receiver information LR_INFO can also be referred to as first information. In one embodiment, the low-power receiver LR may consume less power than the main receiver MR.

[0043] In one embodiment, when the primary receiver MR is in an idle state (or standby state), the low-power receiver LR can detect a low-power wake-up signal from the serving cell CELL#1. When the low-power receiver LR senses the low-power wake-up signal, the primary receiver MR can be woken up to receive paging messages (or paging data). The primary receiver MR can switch back to an idle state after completing the reception of data associated with the paging message, and the low-power receiver LR can again detect the low-power wake-up signal.

[0044] In one embodiment, terminal 100 can perform radio resource management (RRM) measurements using at least one of a low-power receiver (LR) and a primary receiver (MR). Terminal 100 can determine the operating scheme of the LR and MR for the RRM measurements based on low-power receiver information LR_INFO. Here, RRM measurements can represent at least one of the following: measured reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-interference plus noise ratio (SINR), carrier-to-interference plus noise ratio (CINR), and channel quality indicator (CQI).

[0045] Here, RRM measurement can refer to a measurement operation performed by terminal 100 to effectively manage radio resources in a communication network. The results of RRM measurement can be used for handover, network environment change detection, cell selection, cell reselection, network load allocation, network optimization, and quality improvement.

[0046] The performance of a low-power receiver (LR) in RRM measurements can vary depending on the implementation of the LR. As an example, the LR can be implemented to independently perform RRM measurements for the serving cell CELL#1. As another example, the LR can be implemented to independently perform RRM measurements for both the serving cell CELL#1 and a co-frequency neighboring cell CELL#2. As yet another example, the LR can be implemented to independently perform RRM measurements for the serving cell CELL#1, a co-frequency neighboring cell CELL#2, and a different-frequency neighboring cell CELL#3. Furthermore, the LR can be implemented to perform RRM measurements without independence. However, these are examples, and the embodiments are not limited thereto. The LR can be implemented to support a wider variety of RRM measurements. For ease of description, the RRM measurement for serving cell CELL#1 can be referred to as the first RRM measurement, the RRM measurement for co-frequency neighboring cell CELL#2 can be referred to as the second RRM measurement, and the RRM measurement for inter-frequency neighboring cell CELL#3 can be referred to as the third RRM measurement. Furthermore, the fact that the low-power receiver LR supports independent RRM measurements indicates that the low-power receiver LR can provide measurement performance sufficient to represent the primary receiver MR in performing RRM measurements.

[0047] In one embodiment, the low-power receiver information LR_INFO may represent the type of RRM measurement supported by the low-power receiver LR. As an example, the low-power receiver information LR_INFO may indicate which of the first to third RRM measurements is supported independently or which of the first to third RRM measurements is not supported independently.

[0048] In one embodiment, as a scheme for performing RRM measurements using at least one of a low-power receiver (LR) and a main receiver (MR), the operating scheme of the low-power receiver (LR) and the main receiver (MR) can be defined by multiple modes and switching conditions between the multiple modes. Specific embodiments of the multiple modes and switching conditions are described below.

[0049] In one embodiment, terminal 100 may control low-power receiver LR and primary receiver MR to perform RRM measurements for at least one of serving cell CELL#1, co-frequency neighboring cell CELL#2, and inter-frequency neighboring cell CELL#3 based on an operating scheme determined according to low-power receiver information LR_INFO.

[0050] According to an embodiment, terminal 100 can effectively improve the power usage efficiency of terminal 100 by determining an operating scheme based on RRM measurements, taking into account the performance of low-power receiver LR, in order to increase the utilization rate of low-power receiver LR.

[0051] Furthermore, according to an embodiment, terminal 100 can effectively improve the performance of RRM measurement by actively using low-power receiver LR for RRM measurement, taking into account the performance of low-power receiver LR related to RRM measurement.

[0052] Figure 2 This is a schematic block diagram of terminal 100 according to an embodiment.

[0053] Reference Figure 2 Terminal 100 may include multiple antennas 101_1 to 101_M (where M is an integer greater than 1), radio frequency (RF) circuitry 110, processor 120, and memory 130. Figure 2 The implementation of terminal 100 shown is merely an example, and the embodiments are not limited thereto. Terminal 100 may include more components. Furthermore, RF circuit 110 may be referred to as an RF integrated circuit.

[0054] RF circuit 110 supports the function of transmitting and receiving signals using multiple antennas 101_1 to 101_M via a wireless channel. Specifically, RF circuit 110 can generate RF signals by performing digital-to-analog conversion and frequency up-conversion operations on baseband signals provided from processor 120, and can transmit RF signals through multiple antennas 101_1 to 101_M. Furthermore, RF circuit 110 can generate baseband signals by performing frequency down-conversion and analog-to-digital conversion operations on RF signals received via multiple antennas 101_1 to 101_M, and can provide the baseband signals to processor 120.

[0055] As an example, RF circuit 110 may include a transmit filter, a receive filter, a power amplifier, a low-noise amplifier, a mixer, an oscillator, a digital-to-analog converter (DAC), and an analog-to-digital converter (ADC). Furthermore, RF circuit 110 may include multiple RF chains and may use multiple antennas 101_1 to 101_M to perform beamforming. RF circuit 110 can adjust the phase and amplitude of each of the signals transmitted and received through the multiple antennas 101_1 to 101_M for beamforming. Additionally, RF circuit 110 can perform multiple-input multiple-output (MIMO) and can receive multiple layers when performing MIMO operation.

[0056] In one embodiment, RF circuitry 110 may include a low-power receiver 112 and a main receiver 114. The low-power receiver 112 and main receiver 114 may be controlled by receiver control circuitry 122, which will be described below, to perform reception operations of RF signals for RF circuitry 110. As an example, the low-power receiver 112 may be designed to support minimal functionality for performing low-power-based reception operations, and the main receiver 114 may be designed to support high-speed data reception in multiple frequency bands. As an example, the low-power receiver 112 and main receiver 114 may be implemented with mutually separate hardware structures.

[0057] In one embodiment, the low-power receiver 112 may be designed to operate at a lower power than the main receiver 114. The low-power receiver 112 may be designed to be simpler than the main receiver 114. For example, the low-power receiver 112 may include fewer components (e.g., transistors) than the main receiver 114. Furthermore, in one embodiment, the low-power receiver 112 may be designed to be used in RRM measurements to support the mobility of the terminal 100, even when the main receiver 114 is idle.

[0058] In one embodiment, the low-power receiver 112 may support fewer types of signals than the main receiver 114. As an example, the low-power receiver 112 may receive at least one of a low-power wake-up signal, a low-power synchronization signal, a synchronization signal block (SSB), etc., and the number of types of signals supported for reception may be limited to a maximum of three.

[0059] In one embodiment, the low-power receiver 112 may be configured to support independent RRM measurements without relying on the main receiver 114. As an example, the low-power receiver 112 may independently support at least one of a first RRM measurement for the serving cell, a second RRM measurement for co-frequency neighboring cells, and a third RRM measurement for inter-frequency neighboring cells. In some embodiments, the low-power receiver 112 may not support independent RRM measurements.

[0060] Processor 120 controls all operations for communication with terminal 100. In one embodiment, processor 120 may include receiver control circuitry 122. Receiver control circuitry 122 may determine operating schemes for low-power receiver 112 and main receiver 114 based on RRM measurements of the performance of low-power receiver 112, and may control low-power receiver 112 and main receiver 114 based on the determined operating schemes. Figure 2In this embodiment, receiver control circuitry 122 is shown as being included as a hardware component within processor 120, but the embodiment is not limited thereto. Receiver control circuitry 122 may be implemented as software-configurable and stored in memory 130 as executable code executed by processor 120. In some embodiments, receiver control circuitry 122 may be implemented as a combination of hardware and software.

[0061] Memory 130 provides memory space for the operation of processor 120. In one embodiment, memory 130 may store low-power receiver information LR_INFO, which receiver control circuitry 122 refers to to determine operating schemes for low-power receiver 112 and main receiver 114 for RRM measurements. As an example, low-power receiver information LR_INFO may include information indicating the performance of low-power receiver 112 in relation to RRM measurements. Furthermore, as an example, memory 130 may provide memory space for operations determined by receiver control circuitry 122 to determine operating schemes and for control operations based on the determined operating schemes.

[0062] In one embodiment, receiver control circuit 122 can determine an operating scheme by setting multiple modes associated with low-power receiver 112 and main receiver 114 based on low-power receiver information LR_INFO and setting switching conditions between the multiple modes.

[0063] In one embodiment, when RRM measurement is required, receiver control circuitry 122 can select one of a plurality of operating modes and control low-power receiver 112 and main receiver 114 based on the selected mode. Subsequently, receiver control circuitry 122 can periodically or non-periodically monitor whether the switching condition corresponding to the next mode of the selected mode is met, and can switch the selected mode to the next mode when the switching condition is met.

[0064] In some embodiments, the receiver control circuit 122 may also consider the performance of the serving cell in relation to the operation of the low-power receiver 112, as well as the performance of the low-power receiver 112, to determine the operating scheme. As an example, second information indicating the performance of the serving cell may be stored in memory 130 and may be referenced by the receiver control circuit 122. In a particular example, the performance of the serving cell may include elements such as whether the serving cell supports the transmission of low-power synchronization signals. As an example, when the serving cell does not transmit low-power synchronization signals and the low-power receiver 112 only supports RRM measurements for low-power synchronization signals, the performance of the serving cell may also be further considered in determining the operating scheme because RRM measurements of the low-power receiver 112 may be infeasible.

[0065] Furthermore, in one embodiment, the receiver control circuit 122 may modify the determined operating scheme based on at least one of the structure of the terminal 100 and the network environment of the terminal 100. As an example, third information indicating at least one of the structure of the terminal 100 and the network environment of the terminal 100 may be stored in memory 130 and may be referenced by the receiver control circuit 122. As a specific example, the structure of the terminal 100 may include elements such as the connection relationship between the low-power receiver 112 and the main receiver 114, and whether the low-power receiver 112 and the main receiver 114 share antennas 101_1 to 101_M. Furthermore, the network environment of the terminal 100 may include elements that directly or indirectly indicate network quality (such as the communication status between the terminal 100 and the serving cell, the mobility of the terminal 100, and the power status of the terminal 100). As an example, the receiver control circuit 122 may deactivate at least one next mode corresponding to at least one of a plurality of modes of the operating scheme based on at least one of the structure of the terminal 100 and the network environment of the terminal 100. As an example, receiver control circuit 122 may deactivate a portion of multiple modes of operation scheme based on at least one of the structure of terminal 100 and the network environment of terminal 100. Considering the deactivated modes, receiver control circuit 122 may control low-power receiver 112 and main receiver 114 based on other modes.

[0066] According to an embodiment, terminal 100 can effectively operate low-power receiver 112 and main receiver 114 by further considering at least one of the following factors related to the operation of low-power receiver 112: the performance of the serving cell, the structure of terminal 100, and the network environment of terminal 100, as well as the performance of low-power receiver 112.

[0067] Reference Figure 2 The operation of the receiver control circuit 122 described herein can be fully understood as the operation of the processor 120 or the terminal 100.

[0068] Figure 3 This is a flowchart of the terminal operation method according to an embodiment.

[0069] Reference Figure 3 In operation S100, the terminal can obtain first information indicating the performance of the low-power receiver. As an example, the terminal can access the first information stored in memory for reference.

[0070] Furthermore, in operation S110, the terminal can determine the operation scheme for the low-power receiver and the main receiver based on the first information for RRM measurements. As an example, the terminal can determine the operation scheme by setting multiple modes associated with the low-power receiver and the main receiver based on the first information and setting switching conditions between these modes.

[0071] Figure 4 This is a diagram illustrating the first table TB1, which describes low-power receiver information according to an embodiment. Figure 4 In this embodiment, the embodiments are described assuming that the low-power receiver supports RRM measurements for low-power synchronization signals and RRM measurements for SSBs. However, this is merely an example, and it is fully understood that the embodiments are not limited thereto.

[0072] Reference Figure 4 The first table TB1 may include the serving cell measurement requirements field, the co-frequency neighboring cell measurement requirements field, and the capability level field.

[0073] As an example, the Serving Cell Measurement Requirement field may include a field indicating whether the low-power receiver supports the first RRM measurement for the serving cell. The Co-frequency Neighboring Cell Measurement Requirement field may include a field indicating whether the low-power receiver supports the second RRM measurement for the co-frequency neighboring cell. The Capability Level field may include a field indicating the performance of the low-power receiver related to RRM measurements.

[0074] As an example, when the low-power receiver does not support the first RRM measurement and the second RRM measurement, the capability level can correspond to Level 1 LV11. When the low-power receiver only supports the first RRM measurement, the capability level can correspond to Level 2 LV21. Furthermore, when the low-power receiver supports both the first and second RRM measurements, the capability level can correspond to Level 3 LV31.

[0075] In one embodiment, low-power receiver information may represent one of the first to third levels LV11, LV21, and LV31, and the terminal may confirm the performance of the low-power receiver related to RRM measurements based on the low-power receiver information. The performance of the low-power receiver may be defined as decreasing in the order of third level LV31, second level LV21, and first level LV11. For example, the performance of second level LV21 may be less than that of third level LV31 but greater than that of first level LV11.

[0076] Figure 5 This is a flowchart of the terminal operation method according to an embodiment.

[0077] Reference Figure 5 In operation S200, the terminal may obtain first information indicating the performance of the low-power receiver. As an example, the terminal may access the first information stored in memory for reference.

[0078] In operation S210, the terminal may obtain second information indicating the performance of the serving cell related to the operation of the low-power receiver. As an example, the terminal may access the second information stored in memory for reference.

[0079] Furthermore, in operation S220, the terminal can determine the operation scheme for the low-power receiver and the main receiver based on the first information and the second information, taking into account RRM measurements. As an example, the terminal can determine the operation scheme by setting multiple modes related to the low-power receiver and the main receiver based on the first and second information and setting switching conditions between these modes.

[0080] Figure 6 This is a diagram of the second table TB2, which describes low-power receiver information according to an embodiment. Figure 6 In this embodiment, the performance of the serving cell is assumed to be related to whether or not low-power synchronization signal transmission is supported, and the serving cell is assumed not to support low-power synchronization signal transmission, to illustrate the embodiments. However, this is merely an example, and it is fully understood that the embodiments are not limited thereto.

[0081] Reference Figure 6 The second table, TB2, may include additional requirements fields, serving cell measurement requirements fields, co-frequency neighboring cell measurement requirements fields, and capability level fields. As an example, the additional requirements field may be based on... Figure 4 The first piece of information.

[0082] As an example, the additional requirements field may include a field indicating whether the low-power receiver supports RRM measurements for the SSB (e.g., the SSB of the serving cell), in addition to RRM measurements for the low-power synchronization signal. The serving cell measurement requirements field may include a field indicating whether the low-power receiver supports a first RRM measurement for the serving cell. The co-frequency neighboring cell measurement requirements field may include a field indicating whether the low-power receiver supports a second RRM measurement for co-frequency neighboring cells. The capability level field may include a field indicating the low-power receiver's performance related to RRM measurements.

[0083] For example, when the low-power receiver does not support the first RRM measurement and the second RRM measurement, the capability level corresponds to Level 1, LV12. When the low-power receiver supports RRM measurements for low-power synchronization signals and RRM measurements for SSBs, and only supports the first RRM measurement for either low-power synchronization signals or SSBs, the capability level corresponds to Level 2, LV22. When the low-power receiver does not support RRM measurements for SSBs except for RRM measurements for low-power synchronization signals, and only supports the first RRM measurement for low-power synchronization signals, the capability level corresponds to Level 3, LV23. When the low-power receiver supports RRM measurements for both low-power synchronization signals and SSBs, and supports both the first and second RRM measurements for either low-power synchronization signals or SSBs, the capability level corresponds to Level 4, LV32. Furthermore, when the low-power receiver does not support RRM measurements for SSBs except for RRM measurements for low-power synchronization signals, and supports both the first and second RRM measurements for low-power synchronization signals, the capability level corresponds to Level 5, LV33.

[0084] In one embodiment, the low-power receiver information may represent one of the first to fifth levels LV12, LV22, LV23, LV32 and LV33, and the terminal may confirm the performance of the low-power receiver related to RRM measurements based on the low-power receiver information.

[0085] Figures 7A to 7E This is a diagram illustrating an embodiment related to the first modes MODE#1 to the fifth modes MODE#5 included in the operating scheme, according to an example. Based on reference... Figure 4 The described low-power receiver information indicates that at least two of the first mode (MODE#1) to the fifth mode (MODE#5) can be set and are included in the operating scheme.

[0086] Reference Figure 7A In the first mode MODE#1, the low-power receiver LR can perform a first RRM measurement for the serving cell, and the primary receiver MR can also perform a first RRM measurement for the serving cell. As an example, the low-power receiver LR can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver MR can perform a first RRM measurement for an SSB received from the serving cell. As an example, the first RRM measurement by the low-power receiver LR can be performed in parallel or alternately with the first RRM measurement by the primary receiver MR. In some embodiments, the primary receiver MR can perform a first RRM measurement for a low-power synchronization signal received from the serving cell.

[0087] Also refer to Figure 7BIn the second mode MODE#2, the low-power receiver LR can perform a first RRM measurement for the serving cell, and the primary receiver MR can perform both a first RRM measurement for the serving cell and a second RRM measurement for co-frequency neighboring cells. As an example, the low-power receiver LR can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver MR can perform a first RRM measurement for an SSB received from the serving cell and a second RRM measurement for an SSB received from a co-frequency neighboring cell. As an example, the first RRM measurement by the low-power receiver LR can be performed in parallel or alternately with one of the first and second RRM measurements by the primary receiver MR. In some embodiments, the primary receiver MR can perform a first RRM measurement for a low-power synchronization signal received from the serving cell and a second RRM measurement for a low-power synchronization signal received from a co-frequency neighboring cell. Figure 7B In this process, the frequency domain in which the first RRM measurement is located is different from the frequency domain in which the second RRM measurement is located, to indicate that the center frequency of the low-power synchronization signal or SSB received from the serving cell is different from the center frequency of the low-power synchronization signal or SSB received from a neighboring cell at the same frequency.

[0088] Also refer to Figure 7C In MODE#3, the low-power receiver (LR) can perform the first RRM measurement for the serving cell, and the primary receiver (MR) can perform additional reception operations or be idle. In one example, the low-power receiver (LR) can perform the first RRM measurement for a low-power synchronization signal or SSB received from the serving cell.

[0089] Also refer to Figure 7D In MODE#4, the low-power receiver LR can perform a first RRM measurement for the serving cell, and the primary receiver MR can perform a second RRM measurement for co-frequency neighboring cells. As an example, the low-power receiver LR can perform the first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver MR can perform the second RRM measurement for an SSB received from a co-frequency neighboring cell. As an example, the first RRM measurement by the low-power receiver LR can be performed in parallel or alternately with the second RRM measurement by the primary receiver MR. In some embodiments, the primary receiver MR can perform the second RRM measurement for a low-power synchronization signal received from a co-frequency neighboring cell.

[0090] Also refer to Figure 7EIn MODE#5, the low-power receiver (LR) can perform a first RRM measurement for the serving cell and a second RRM measurement for co-frequency neighboring cells, while the primary receiver (MR) can perform additional reception operations or be in an idle state. As an example, the low-power receiver (LR) can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and a second RRM measurement for a low-power synchronization signal or SSB received from a co-frequency neighboring cell.

[0091] Compared to Mode 3, Mode 1 ensures improved performance for the first RRM measurement of the serving cell. Mode 2, a combination of Mode 1 and Mode 4, provides improved performance for the first RRM measurement of the serving cell, as well as fast operation for handover or cell reselection. Mode 4 performs handover or cell reselection operations faster than Mode 3. Because the primary receiver (MR) is not used for RRM measurement, Modes 3 and 5 minimize power consumption.

[0092] Figure 8 This is a diagram of the third table TB3 describing the operation scheme according to the embodiment. Figure 8 In the middle, the hypothetical reference is shown. Figure 4 The operating scheme is determined based on the described embodiments. It is also assumed that the first mode MODE#1 to the fifth mode MODE#5 are consistent with the reference... Figures 7A to 7E The described pattern corresponds.

[0093] Reference Figure 8 The third table TB3 may include an operation plan field and a capability level field.

[0094] As an example, the operating scheme field may include fields indicating the setup mode associated with the low-power receiver and the main receiver. The capability level field may include fields indicating the performance of the low-power receiver related to RRM measurements.

[0095] As an example, when the low-power receiver's performance is Level 1 (LV11), the operating scheme can be determined by setting the first mode (MODE#1) and the second mode (MODE#2). For example, the operating scheme may include the first mode (MODE#1) and the second mode (MODE#2). When the low-power receiver's performance is Level 2 (LV21), the operating scheme can be determined by setting the first mode (MODE#1) through the fourth mode (MODE#4). For example, the operating scheme may include the first mode (MODE#1) through the fourth mode (MODE#4). Furthermore, when the low-power receiver's performance is Level 3 (LV31), the operating scheme can be determined by setting the first mode (MODE#1) through the fifth mode (MODE#5). For example, the operating scheme may include the first mode (MODE#1) through the fifth mode (MODE#5).

[0096] In one embodiment, the terminal can control the low-power receiver and the main receiver to operate based on one of the modes set in the operating scheme. For example, when the performance of the low-power receiver is at the first level LV11, the terminal can control the low-power receiver and the main receiver to operate based on one of the first modes MODE#1 and the second mode MODE#2. When the performance of the low-power receiver is at the second level LV21, the terminal can control the low-power receiver and the main receiver to operate based on one of the first modes MODE#1 to the fourth mode MODE#4. Furthermore, when the performance of the low-power receiver is at the third level LV31, the terminal can control the low-power receiver and the main receiver to operate based on one of the first modes MODE#1 to the fifth mode MODE#5.

[0097] Figure 9 This is a diagram illustrating an operation method of a terminal for controlling a low-power receiver LR and a main receiver MR based on a determined operation scheme, according to an embodiment. Figure 9 Can be based on reference Figure 4 , Figures 7A to 7E and Figure 8 The described embodiments.

[0098] Reference Figure 9 When the low-power receiver's performance is at Level 1 (LV11), the terminal can control the low-power receiver (LR) and the main receiver (MR) based on one of the first mode (MODE#1) and the second mode (MODE#2). When the low-power receiver's performance is at Level 2 (LV21), the terminal can control the low-power receiver (LR) and the main receiver (MR) based on one of the first modes (MODE#1) to the fourth mode (MODE#4). Furthermore, when the low-power receiver's performance is at Level 3 (LV31), the terminal can control the low-power receiver (LR) and the main receiver (MR) based on one of the first modes (MODE#1) to the fifth mode (MODE#5).

[0099] As an example, in the first mode (MODE#1), the low-power receiver (LR) and the primary receiver (MR) can perform a first RRM measurement for the serving cell SVC. In the second mode (MODE#2), the low-power receiver (LR) and the primary receiver (MR) can perform a first RRM measurement for the serving cell SVC, and the primary receiver (MR) can perform a second RRM measurement for the co-frequency neighboring cell INTRA NC. In the third mode (MODE#3), the low-power receiver (LR) can perform a first RRM measurement for the serving cell SVC. In the fourth mode (MODE#4), the low-power receiver (LR) can perform a first RRM measurement for the serving cell SVC, and the primary receiver (MR) can perform a second RRM measurement for the co-frequency neighboring cell INTRA NC. Furthermore, in the fifth mode (MODE#5), the low-power receiver (LR) can perform both a first RRM measurement for the serving cell SVC and a second RRM measurement for the co-frequency neighboring cell INTRA NC.

[0100] As an example, switching between Mode 1 and Mode 2 can be performed by turning the primary receiver MR on or off during a second RRM measurement for a co-frequency neighboring cell INTRA NC. Figure 9 In this context, the fact that a specific receiver is turned on during a specific RRM measurement indicates that the specific receiver is controlled to perform the specific RRM measurement, and the fact that a specific receiver is turned off during a specific RRM measurement indicates that the specific receiver is controlled not to perform the specific RRM measurement. When a specific receiver is turned off during a specific RRM measurement, the specific receiver can be switched to an idle state or can perform receiving operations other than the specific RRM measurement.

[0101] As an example, a handover between mode 1 and mode 3 can be performed by turning the primary receiver MR on or off during the first RRM measurement for the serving cell SVC.

[0102] As an example, a handover between mode MODE#2 and mode MODE#4 can be performed by turning the primary receiver MR on or off during the first RRM measurement for the serving cell SVC.

[0103] As an example, switching between MODE#3 and MODE#4 can be performed by turning the primary receiver MR off or on during the second RRM measurement for INTRA NC of co-frequency neighboring cells.

[0104] Furthermore, as an example, switching between the third mode (MODE#3) and the fifth mode (MODE#5) can be performed by turning the low-power receiver (LR) off or on during the second RRM measurement for the INTRA NC of adjacent cells on the same frequency.

[0105] Figure 10 This is a diagram of the fourth table TB4, which shows the next mode that can be switched for each mode in the operation scheme according to the description of the embodiment. Figure 10 Can be based on reference Figure 9 The described embodiments.

[0106] Reference Figure 10 The fourth table TB4 may include the current schema field and the next schema field.

[0107] As an example, the Current Mode field may include a field indicating the currently selected mode for controlling the low-power receiver and the main receiver. Additionally, the Next Mode field may include a field indicating the next mode that can be switched from the currently selected mode.

[0108] As an example, when the first mode MODE#1 is the current mode, the next mode can correspond to the second mode MODE#2 or the third mode MODE#3.

[0109] As an example, when the second mode MODE#2 is the current mode, the next mode can correspond to the first mode MODE#1 or the fourth mode MODE#4.

[0110] As an example, when the third mode MODE#3 is the current mode, the next mode can correspond to the first mode MODE#1, the fourth mode MODE#4, or the fifth mode MODE#5.

[0111] As an example, when the fourth mode MODE#4 is the current mode, the next mode can correspond to the second mode MODE#2 or the third mode MODE#3.

[0112] Furthermore, as an example, when the fifth mode MODE#5 is the current mode, the next mode can correspond to the third mode MODE#3.

[0113] In one embodiment, the terminal can set switching conditions between a first mode (MODE#1) and a fifth mode (MODE#5), and the terminal can monitor whether the switching conditions corresponding to the next mode of the current mode are met. When the switching conditions are met, the terminal can switch the current mode to the next mode. Specific examples of these are described below.

[0114] Figure 11 This is a flowchart of the terminal operation method according to an embodiment.

[0115] Reference Figure 11 In operation of S300, the terminal can operate based on mode K. For example, the terminal can control the low-power receiver and main receiver to perform RRM measurements based on mode K. Mode K can be referred to as the current mode.

[0116] In operation S310, the terminal can determine whether the switching condition for one of at least one of the next modes corresponding to the Kth mode is met. As an example, such as... Figure 10 As shown, since the next mode that can be switched to can vary depending on the current mode, the terminal can confirm at least one next mode corresponding to the Kth mode which is the current mode, and can determine whether the switching condition corresponding to the confirmed next mode is met.

[0117] When operation S310 is "yes", the terminal can switch the Kth mode to the next mode that meets the switching conditions in operation S320.

[0118] Furthermore, when operation S310 is not enabled, operation S300 can be repeated.

[0119] Figure 12 yes Figure 11 A flowchart of a specific embodiment of operation S310.

[0120] Reference Figure 12 , Figure 11 Operation S310 may include operations S311 to S313.

[0121] In operation S311, the terminal can identify at least one next mode of the Kth mode from multiple modes.

[0122] In operation S312, the terminal can confirm the switching conditions corresponding to at least one next mode.

[0123] In addition, during operation S313, the terminal can monitor whether the confirmed handover conditions are met.

[0124] Figure 13 This is a diagram of the fifth table TB5, which shows the switching conditions monitored for switching from the current mode to the next mode, according to the description of the embodiment. Figure 13 Can be based on reference Figure 10 The described embodiments.

[0125] Reference Figure 13 The fifth table TB5 may include the current mode field, the next mode field, and the threshold field.

[0126] As an example, the Current Mode field may include a field indicating the currently selected mode for controlling the low-power receiver and the main receiver. The Next Mode field may include a field indicating the next mode that can be switched from the currently selected mode. Additionally, the Threshold field may include a field indicating a threshold corresponding to the switching condition.

[0127] For example, the switching conditions between the first mode MODE#1 and the second mode MODE#2 can be set based on the first threshold TH#1. The switching conditions between the first mode MODE#1 and the third mode MODE#3 can be set based on the second threshold TH#2. The switching conditions between the second mode MODE#2 and the fourth mode MODE#4 can be set based on the third threshold TH#3. The switching conditions between the third mode MODE#3 and the fourth mode MODE#4 can be set based on the fourth threshold TH#4. Furthermore, the switching conditions between the third mode MODE#3 and the fifth mode MODE#5 can be set based on the fifth threshold TH#5.

[0128] For example, the first threshold TH#1 to the fifth threshold TH#5 can be combined in various ways to set the switching conditions between the first mode MODE#1 and the fifth mode MODE#5.

[0129] In one embodiment, when the current mode is the first mode MODE#1, the terminal can perform a monitoring operation based on a first threshold TH#1 and a second threshold TH#2 corresponding to the second mode MODE#2 and the third mode MODE#3, respectively. The second mode MODE#2 and the third mode MODE#3 can be the next mode. Specific embodiments thereof are described below.

[0130] However, Figure 13 This is merely an example, and the implementation is not limited thereto. Switching conditions between modes can be set in various ways.

[0131] Figure 14 This is a flowchart of the terminal operation method according to an embodiment. Figure 14 Can be based on reference Figure 7A and Figure 13 The described embodiments.

[0132] Reference Figure 14 In operation S400, the terminal can operate based on the first mode MODE#1. As an example, based on the first mode MODE#1, the terminal can control the low-power receiver LR to perform the first RRM measurement for the serving cell, and can control the main receiver MR to perform the first RRM measurement for the serving cell.

[0133] In operation S410, the terminal can determine whether the measurement result of operation S400 is less than the first threshold TH#1 corresponding to the second mode MODE#2. As an example, the measurement result can be generated by combining the result measured by the first RRM via the low-power receiver LR and the result measured by the second RRM via the main receiver MR.

[0134] When operation S410 is "Yes", the terminal can switch from the first mode MODE#1 to the second mode MODE#2 in operation S420.

[0135] When operation S410 is "No", operation S430 can be executed. In operation S430, the terminal can determine whether the measurement result of operation S400 is greater than the second threshold TH#2 corresponding to the third mode MODE#3.

[0136] When operation S430 is "Yes", the terminal can switch from the first mode MODE#1 to the third mode MODE#3 in operation S440.

[0137] Furthermore, when operation S430 is "No", operation S400 can be repeated.

[0138] Even when the current mode is any of the second mode #2 through the fifth mode #5, Figure 14 The features can also be applied in the same or similar way, and their detailed descriptions are omitted.

[0139] Figure 15 This is a flowchart of the terminal operation method according to an embodiment.

[0140] Reference Figure 15 During operation S500, the terminal can obtain first information indicating the performance of the low-power receiver. As an example, the terminal can access the first information stored in memory for reference. As another example, the first information may be pre-stored in memory during the mass production of the terminal.

[0141] Referring to operation S510, the terminal can determine the operating scheme for the low-power receiver and the main receiver based on the first information used for RRM measurement. As an example, the terminal can determine the operating scheme by setting multiple modes associated with the low-power receiver and the main receiver based on the first information and setting switching conditions between the multiple modes.

[0142] Referring to operation S520, the terminal can obtain at least one third piece of information regarding the terminal's structure and network environment. As an example, the terminal can access the third information stored in memory for reference. As an example, the third information may be pre-stored in memory during the terminal's mass production, or it may be generated by the terminal and stored in memory. As a specific example, the terminal's structure may include elements such as the connection relationship between the terminal's low-power receiver and the main receiver, and whether the low-power receiver 112 and the main receiver 114 share an antenna. The terminal's network environment may include elements that directly or indirectly indicate network quality (such as the communication status between the terminal and the serving cell, the terminal's mobility, and the terminal's power status).

[0143] In operation S530, the terminal can modify the operation plan determined in operation S510 based on third information. As an example, the terminal can deactivate at least one next mode corresponding to at least one of multiple modes of the operation plan, based on at least one of the terminal's structure and network environment. (See also...) Figure 16A Provide detailed descriptions of these. As an example, a terminal may deactivate a subset of multiple modes of an operating scheme based on at least one of the terminal's architecture and network environment. (See also...) Figure 16B Provide a detailed description of them.

[0144] Figure 16A and Figure 16B These are descriptions Figure 15 A diagram illustrating the sixth table TB6 and the seventh table TB7 of a specific embodiment of operation S530. Figure 16A and Figure 16B In this context, it is assumed that the terminal's capability level is similar to... Figure 9 The third level LV31 corresponds to this, and the terminal sets the first mode MODE#1 to the fifth mode MODE#5 as the operating scheme for RRM measurement.

[0145] Reference Figure 16A According to Table 6 TB6, the terminal can deactivate at least one of the following modes based on its architecture and network environment: Mode 4 (the next mode after Mode 3) and Mode 2 (the next mode after Mode 4). Therefore, when the current mode is Mode 3, the terminal can monitor the switching conditions corresponding to Mode 1 and Mode 5 to switch modes. Furthermore, when the current mode is Mode 4, the terminal can monitor the switching conditions corresponding to Mode 3 to switch modes.

[0146] Also refer to Figure 16B According to Table 7 (TB7), the terminal can deactivate the first mode (MODE#1) and the second mode (MODE#2) based on at least one of the terminal's architecture and network environment. Therefore, the terminal can control the low-power receiver and the main receiver based on the third to fifth modes (MODE#3, MODE#4, and MODE#5).

[0147] However, because Figure 16A and Figure 16B This is merely an example, so it is fully understood that the embodiments are not limited thereto.

[0148] Figure 17 This is a diagram of Table TB8, which describes low-power receiver information according to an embodiment. Figure 17In this embodiment, the embodiments are described assuming that the low-power receiver supports RRM measurements for low-power synchronization signals and RRM measurements for SSBs. However, this is merely an example, and it is fully understood that the embodiments are not limited thereto.

[0149] Reference Figure 17 Table 8 (TB8) may include the serving cell measurement requirements field, the co-frequency neighboring cell measurement requirements field, the inter-frequency neighboring cell measurement requirements field, and the capability level field.

[0150] As an example, the Serving Cell Measurement Requirement field may include a field indicating whether the low-power receiver supports a first RRM measurement for the serving cell. The Co-frequency Neighboring Cell Measurement Requirement field may include a field indicating whether the low-power receiver supports a second RRM measurement for a co-frequency neighboring cell. The Inter-frequency Neighboring Cell Measurement Requirement field may include a field indicating whether the low-power receiver supports a third RRM measurement for an inter-frequency neighboring cell. The Capability Level field may include a field indicating the RRM measurement-related performance of the low-power receiver.

[0151] For example, when the low-power receiver does not support the first to third RRM measurements, the capability level corresponds to Level 1 (LV14). When the low-power receiver only supports the first RRM measurement, the capability level corresponds to Level 2 (LV24). When the low-power receiver supports both the first and second RRM measurements, the capability level corresponds to Level 3 (LV34). Furthermore, when the low-power receiver supports both the first and third RRM measurements, the capability level corresponds to Level 4 (LV44).

[0152] In one embodiment, the low-power receiver information may represent one of the first level LV14 to the fourth level LV44, and the terminal may confirm the performance of the low-power receiver related to RRM measurements based on the low-power receiver information. The performance of the low-power receiver may decrease in the order of fourth level LV44, third level LV34, second level LV24, and first level LV14. For example, the performance of second level LV24 may be less than that of third level LV34 but greater than that of first level LV14. The performance of fourth level LV44 may be greater than that of third level LV34.

[0153] Figures 18A to 18E This is a diagram illustrating embodiments related to the first modes MODE#1-1 to the fifth modes MODE#5-1 included in the operating scheme, according to an embodiment. Based on reference... Figure 17 The description includes information about the low-power receiver, from Mode 1 to Mode 5, and... Figures 7A to 7E At least two of the first mode MODE#1 to the fifth mode MODE#5 can be set and included in the operation scheme.

[0154] Reference Figure 18A In Mode 1-1 (MODE#1-1), the low-power receiver (LR) can perform a first RRM measurement for the serving cell, and the primary receiver (MR) can perform both a first RRM measurement for the serving cell and a third RRM measurement for inter-frequency neighboring cells. As an example, the low-power receiver (LR) can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver (MR) can perform a first RRM measurement for an SSB received from the serving cell and a third RRM measurement for an SSB received from an inter-frequency neighboring cell. Figure 18A In this process, the frequency domain in which the third RRM measurement is located is different from the frequency domain in which the first RRM measurement is located, to indicate that the frequency band provided by the inter-frequency neighboring cell is different from the frequency band provided by the serving cell.

[0155] Also refer to Figure 18B In mode MODE#2-1, the low-power receiver LR can perform a first RRM measurement for the serving cell, and the primary receiver MR can perform a first RRM measurement for the serving cell, a second RRM measurement for co-frequency neighboring cells, and a third RRM measurement for inter-frequency neighboring cells. As an example, the low-power receiver LR can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver MR can perform a first RRM measurement for an SSB received from the serving cell, a second RRM measurement for an SSB received from a co-frequency neighboring cell, and a third RRM measurement for an SSB received from an inter-frequency neighboring cell. Figure 18B In this process, the frequency domain in which the third RRM measurement is located is different from the frequency domain in which the second RRM measurement is located, to indicate that the frequency band provided by neighboring cells of different frequencies is different from the frequency band provided by neighboring cells of the same frequency.

[0156] Also refer to Figure 18C In Mode 3-1, the low-power receiver LR can perform a first RRM measurement for the serving cell, and the primary receiver MR can perform a third RRM measurement for inter-frequency neighboring cells. As an example, the low-power receiver LR can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver MR can perform a third measurement for an SSB received from an inter-frequency neighboring cell.

[0157] Also refer to Figure 18DIn Mode 4-1 (MODE#4-1), the low-power receiver (LR) can perform a first RRM measurement for the serving cell, and the primary receiver (MR) can perform a second RRM measurement for co-frequency neighboring cells and a third RRM measurement for inter-frequency neighboring cells. As an example, the low-power receiver (LR) can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and the primary receiver (MR) can perform a second RRM measurement for an SSB received from a co-frequency neighboring cell and a third RRM measurement for an SSB received from an inter-frequency neighboring cell.

[0158] Also refer to Figure 18E In Mode 5-1, the low-power receiver LR can perform a first RRM measurement for the serving cell and a second RRM measurement for co-frequency neighboring cells, and the primary receiver MR can perform a third RRM measurement for inter-frequency neighboring cells. As an example, the low-power receiver LR can perform a first RRM measurement for a low-power synchronization signal or SSB received from the serving cell, and a second RRM measurement for a low-power synchronization signal or SSB received from a co-frequency neighboring cell, and the primary receiver MR can perform a third RRM measurement for an SSB received from an inter-frequency neighboring cell.

[0159] Figure 19 This is a sequence diagram between terminal 200 and serving cell 210 according to an embodiment.

[0160] Reference Figure 19 In operation S1000, terminal 200 can send terminal performance information to serving cell 210. The terminal performance information includes first information indicating the performance of the low-power receiver. For example, terminal 200 can send the terminal performance information including the first information via Radio Resource Control (RRC) signaling after randomly accessing serving cell 210. The performance information including the first information can be received at serving cell 210.

[0161] In operation S1010, terminal 200 can determine an operation plan for RRM measurement based on the first information.

[0162] In operation S1020, the serving cell 210 can determine a transmission scheme for the synchronization signal based on the first information. As an example, the serving cell 210 can determine the transmission scheme by deciding whether to transmit a low-power synchronization signal based on the first information.

[0163] In operation S1030, serving cell 210 may send a synchronization signal to terminal 200 based on the transmission scheme determined in operation S1020. The synchronization signal may be received at terminal 200.

[0164] Furthermore, in operation S1040, terminal 200 can perform RRM measurements based on the operation scheme determined in operation S1010. As an example, terminal 200 can control the low-power receiver and main receiver to perform RRM measurements based on multiple modes of the determined operation scheme.

[0165] Figure 20 This is a block diagram of an electronic device 1000 according to an embodiment.

[0166] Reference Figure 20 The electronic device 1000 may include a memory 1010, a processor unit 1020, an input / output (I / O) controller 1040, a display 1050, an input device 1060, and a communication processor 1090. Multiple memories 1010 may also be provided. Each component is described below.

[0167] The memory 1010 may include a program storage device 1011 for storing programs for controlling the operation of the electronic device 1000, and a data storage device 1012 for storing data generated during program execution. The data storage device 1012 may store data for the operation of the application program 1013 and the operation scheme determination program 1014. In one embodiment, the data storage device 1012 may include low-power receiver information LR_INFO for determining an operation scheme for RRM measurements, according to an embodiment. As an example, the low-power receiver information LR_INFO may represent the performance of the low-power receiver related to RRM measurements.

[0168] The program storage device 1011 may include an application program 1013 and an operation scheme determination program 1014. The program included in the program storage device 1011 may be represented as an instruction set, which is a collection of instructions. The application program 1013 may include program code for the execution of various applications operating in the electronic device 1000. That is, the application program 1013 may include code (or commands) for various applications driven by the processor 1022. According to an embodiment, the operation scheme determination program 1014 may include control code for determining the operation scheme of the low-power receiver and the main receiver.

[0169] In one embodiment, by executing an operation scheme determination procedure 1014, the processor 1022 can set multiple modes for the low-power receiver and the main receiver and set switching conditions between the multiple modes to determine an operation scheme for RRM measurements. The processor 1022 can use the low-power receiver information LR_INFO from the data storage device 1012 when performing the corresponding operation. The processor 1022 can control the low-power receiver and the main receiver to perform RRM measurements based on the determined operation scheme.

[0170] Electronic device 1000 may include a communication processor 1090 that performs communication functions for voice and data communication. The communication processor 1090 may include a main receiver and a low-power receiver for assisting the operation of the main receiver.

[0171] Peripheral interface 1023 controls the connection between input / output controller 1040, communication processor 1090, processor 1022, and memory interface 1021. Processor 1022 controls multiple cells to provide corresponding services using at least one software program. Processor 1022 can execute at least one program stored in memory 1010 to provide services corresponding to that program.

[0172] The input / output controller 1040 provides an interface between input / output devices (such as display 1050 and input device 1060) and peripheral device interface 1023. Display 1050 displays status information, input characters, moving images, still images, etc. For example, display 1050 may display application information driven by processor 1022.

[0173] Input device 1060 can provide input data generated by selection by electronic device 1000 to processor unit 1020 via input / output controller 1040. Input device 1060 may include a keyboard with at least one hardware button, a touchpad for sensing touch information, etc. For example, input device 1060 can provide touch information (such as touch, touch movement, and touch release) sensed by touchpad to processor 1022 via input / output controller 1040.

[0174] According to another aspect of the embodiments, a method of operating a communication system including terminals and a serving cell communicating with each other is provided. The method includes: the terminal transmitting performance information including first information, indicating the performance of a low-power receiver of the terminal, to the serving cell; the terminal determining, based on the first information, an operating scheme for performing RRM measurements using at least one of the terminal's low-power receiver and a primary receiver; and the serving cell determining, based on the first information, a transmission scheme for transmitting a synchronization signal. The method of operating the communication system may further include: the serving cell transmitting a synchronization signal to the terminal based on the determined transmission scheme; and the terminal performing RRM measurements on the synchronization signal based on the determined operating scheme.

[0175] Furthermore, in the operation method of the communication system, the determined transmission scheme may include selecting at least one of transmitting a low-power synchronization signal and an SSB as the synchronization signal.

[0176] Furthermore, in the operation of a communication system, the structural complexity of a low-power receiver can be lower than that of the main receiver.

[0177] According to another aspect of the embodiments, a terminal configured to communicate with a serving cell is provided, the terminal including RF circuitry and a processor, the RF circuitry including a low-power receiver and a main receiver, the processor being configured to: set multiple modes for the low-power receiver and the main receiver based on whether the low-power receiver supports a first RRM measurement for the serving cell and whether the low-power receiver supports a second RRM measurement for a co-frequency neighboring cell, wherein the processor is configured to: perform at least one of the first RRM measurement and the second RRM measurement using either the low-power receiver alone or using both the low-power receiver and the main receiver, based on one of the multiple modes.

[0178] Furthermore, in the terminal according to the embodiment, the plurality of modes includes at least two of a first mode, a second mode, a third mode, a fourth mode, and a fifth mode. In the first mode, the first RRM measurement is performed by a low-power receiver and a main receiver. In the second mode, the first RRM measurement is performed by a low-power receiver and a main receiver, and the second RRM measurement is performed by the main receiver. In the third mode, the first RRM measurement is performed by a low-power receiver. In the fourth mode, the first RRM measurement is performed by a low-power receiver, and the second RRM measurement is performed by the main receiver. In the fifth mode, the first RRM measurement and the second RRM measurement are performed by a low-power receiver.

[0179] In addition, in the terminal, the low-power receiver can be configured to receive a low-power wake-up signal from the serving cell and recognize a paging command, and the main receiver is configured to be woken up based on the paging command and receive a paging signal from the low-power receiver.

[0180] Furthermore, in the terminal, the processor can be configured to deactivate at least one of multiple modes based on the network environment of the serving cell.

[0181] While aspects of the embodiments have been specifically shown and described, it will be understood that various changes in form and detail may be made therein without departing from the spirit and scope of the appended claims.

Claims

1. A terminal configured to communicate with a serving cell, the terminal comprising: Radio frequency circuitry, including a low-power receiver and a main receiver; The memory is configured to store first information indicating the performance of the low-power receiver; as well as The processor is configured to: determine, based on first information, an operating scheme for performing radio resource management measurements using at least one of a low-power receiver and a main receiver.

2. The terminal as described in claim 1, wherein, The processor is configured to determine the operating scheme by setting multiple modes associated with the low-power receiver and the main receiver based on first information.

3. The terminal as described in claim 2, wherein, The processor is also configured to set switching conditions between the plurality of modes.

4. The terminal as described in claim 3, wherein, The processor is also configured to control the low-power receiver and the main receiver to operate in a first mode of the plurality of modes, and while operating in the first mode, monitor whether the switching conditions corresponding to the next mode of the first mode are met.

5. The terminal as described in claim 4, wherein, The processor is also configured to switch from the first mode to the next mode based on the fact that the switching conditions corresponding to the next mode are met.

6. The terminal as described in claim 1, wherein, The memory is also configured to store second information about at least one of the structure of the terminal and the network environment of the terminal, and The processor is also configured to modify the determined operating scheme based on the second information.

7. The terminal as described in claim 6, wherein, The established operating scheme includes multiple modes associated with the low-power receiver and the main receiver. The processor is configured to deactivate at least one of the multiple modes to modify the determined operation scheme.

8. The terminal as described in claim 1, wherein, The first information indicates whether the low-power receiver supports the first radio resource management measurement for the serving cell and whether the low-power receiver supports the second radio resource management measurement for co-frequency neighboring cells.

9. The terminal as described in claim 8, wherein, The processor is configured to: set at least two modes to the operating scheme based on first information, and The at least two modes are identified from a plurality of modes, which include: a first mode, a second mode, a third mode, a fourth mode, and a fifth mode. In the first mode, a first radio resource management measurement is performed by a low-power receiver and a main receiver. In the second mode, the first radio resource management measurement is performed by a low-power receiver and a main receiver, and the second radio resource management measurement is performed by the main receiver. In the third mode, the first radio resource management measurement is performed by a low-power receiver. In the fourth mode, the first radio resource management measurement is performed by a low-power receiver, and the second radio resource management measurement is performed by the main receiver. In the fifth mode, the first radio resource management measurement and the second radio resource management measurement are performed by a low-power receiver.

10. The terminal as claimed in claim 9, wherein, The processor is configured as follows: Based on the first information indicating that the low-power receiver does not support the first radio resource management measurement and the second radio resource management measurement, the first mode and the second mode are set to the operating scheme. Based on the first information indicating that the low-power receiver supports the first radio resource management measurement and the low-power receiver does not support the second radio resource management measurement, the first mode to the fourth mode are set as the operating scheme; and Based on the first information indicating that the low-power receiver supports the first radio resource management measurement and the second radio resource management measurement, the first mode to the fifth mode are set as the operating scheme.

11. The terminal as claimed in claim 8, wherein, The first information also indicates whether the low-power receiver supports third radio resource management measurements for inter-frequency neighboring cells.

12. The terminal as claimed in claim 11, wherein, The processor is configured to: set at least two modes to the operating scheme based on first information, and The at least two modes are identified from a plurality of modes, and the plurality of modes include: a first mode, a second mode, a third mode, a fourth mode, a fifth mode, a sixth mode, a seventh mode, an eighth mode, a ninth mode, and a tenth mode. In the first mode, a first radio resource management measurement is performed by a low-power receiver and a main receiver. In the second mode, the first radio resource management measurement is performed by a low-power receiver and a main receiver, and the second radio resource management measurement is performed by the main receiver. In the third mode, the first radio resource management measurement is performed by a low-power receiver. In the fourth mode, the first radio resource management measurement is performed by a low-power receiver, and the second radio resource management measurement is performed by the main receiver. In the fifth mode, the first and second radio resource management measurements are performed by a low-power receiver. In the sixth mode... In the first mode, the first radio resource management measurement is performed by the low-power receiver and the main receiver, and the third radio resource management measurement is performed by the main receiver. In the second mode, the first radio resource management measurement is performed by the low-power receiver and the main receiver, and the second and third radio resource management measurements are performed by the main receiver. In the third mode, the first radio resource management measurement is performed by the low-power receiver, and the third radio resource management measurement is performed by the main receiver. In the fourth mode, the first radio resource management measurement is performed by the low-power receiver, and the second and third radio resource management measurements are performed by the main receiver. In the fifth mode, the first and second radio resource management measurements are performed by the low-power receiver, and the third radio resource management measurement is performed by the main receiver.

13. The terminal as claimed in claim 1, wherein, The memory is also configured to store second information indicating the performance of the serving cell related to the operation of the low-power receiver, and The processor is further configured to determine the operation scheme based on the first information and the second information.

14. The terminal as claimed in claim 13, wherein, The second information indicates whether the serving cell supports the transmission of low-power synchronization signals, and The first information indicates whether the low-power receiver supports the measurement of the synchronization signal block for the serving cell, whether the low-power receiver supports the first radio resource management measurement for the serving cell, and whether the low-power receiver supports the second radio resource management measurement for co-frequency neighboring cells.

15. The terminal as claimed in any one of claims 1 to 14, wherein, The processor is also configured to transmit capability information, including first information, to the serving cell via radio frequency circuitry.

16. An operating method for a terminal communicating with a serving cell, the operating method comprising: Based on the first information indicating the performance of the low-power receiver, the operating schemes for the low-power receiver and the main receiver are determined, and Based on the determined operating scheme, radio resource management measurements are performed using at least one of the low-power receiver and the main receiver.

17. The operating method as described in claim 16, wherein, The steps to determine the operating scheme include: setting multiple modes related to the low-power receiver and the main receiver based on the first information.

18. The operating method as described in claim 16, wherein, The first information indicates at least one of the following: whether the low-power receiver supports a first radio resource management measurement for the serving cell, whether the low-power receiver supports a second radio resource management measurement for a co-frequency neighboring cell, and whether the low-power receiver supports a third radio resource management measurement for a different-frequency neighboring cell.

19. The operating method as described in claim 18, wherein, The steps for performing radio resource management measurements include: performing at least one of a first radio resource management measurement to a third radio resource management measurement using at least one of a low-power receiver and a main receiver, based on one of a plurality of modes of a determined operating scheme.

20. A method of operating a communication system, the communication system comprising terminals communicating with each other and a serving cell, the method comprising: The terminal sends performance information, including first information, to the serving cell. The first information indicates the performance of the terminal's low-power receiver. The terminal determines, based on the first information, an operating scheme for performing radio resource management measurements using at least one of the low-power receiver and the main receiver of the terminal; as well as The serving cell determines the transmission scheme for sending synchronization signals based on the first information.

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