Method for testing terminal performance and information processing device

Abstract

This method for testing terminal performance comprises: a step for applying a load to a terminal having a function of transmitting a signal on the basis of detection of a high load state of its own terminal; a step for detecting whether the signal is transmitted from the terminal in a first period and a second period set after the load is applied to the terminal; and a step for determining whether the terminal has an ability to execute the function on the basis of the presence or absence of transmission of the signal from the terminal in the first period and the presence or absence of transmission of the signal from the terminal in the second period.

Description

Terminal performance testing method and information processing device

[0001] The present invention relates to a terminal performance testing method and an information processing device.

[0002] Under the 3GPP (registered trademark) standard, in LTE (Long Term Evolution) and NR (New Radio) (also called "5G"), a function has been introduced that allows a terminal to notify the network in order to eliminate or avoid a high load state on the terminal (for example, Non-Patent Document 1).

[0003] Meanwhile, terminals with a variety of communication functions are available on the market, and tests are required to verify the functions of these terminals to eliminate or avoid high loads on the terminals.

[0004] 3GPP TS 38.331 V18.0.0(2024-01)

[0005] However, it is difficult to accurately and uniformly measure and test the "load" of terminals with various communication functions available on the market. Until now, there has been no established test method for verifying functions (e.g., the operation of sending signals (alerts) from the terminal to the network) to prevent or eliminate high loads on terminals with such various communication functions.

[0006] The present invention has been made in consideration of the above points, and defines a test method for ensuring terminal capabilities to perform functions for avoiding / resolving high load conditions on terminals, which has not been defined in the past.

[0007] The method for testing terminal performance in this embodiment includes the steps of applying a load to a terminal having a function of transmitting a signal based on the detection of a high load state of the terminal itself, detecting whether the signal has been transmitted from the terminal during a first period and a second period that are set after the load has been applied to the terminal, and determining whether the terminal has the capability to execute the function based on whether the signal has been transmitted from the terminal during the first period and whether the signal has been transmitted from the terminal during the second period.

[0008] According to this embodiment, it is possible to define a test method for ensuring the terminal capability to perform functions for avoiding / resolving a high load state of the terminal, which has not been defined in the past.

[0009] 1-1。 FIG. 1-2 is a diagram showing an example of a configuration of a wireless communication system. FIG. 1-3 is a diagram showing an example of a configuration of a wireless communication system. FIG. 1-4 is a diagram showing an example of a configuration of a wireless communication system. FIG. 1-5 is a diagram showing an example of a configuration of a wireless communication system. FIG. 1-6 is a diagram showing an example of a configuration of a wireless communication system. FIG. 1-7 is a diagram showing an example of a configuration of a wireless communication system. FIG. 1-8 is a diagram showing an example of a configuration of a wireless communication system. It is a diagram showing an example of the functional configuration of a terminal according to the present embodiment. It is a diagram showing an example of the hardware configuration of an information processing device, a base station or a terminal according to the present embodiment. It is a diagram showing an example of the configuration of a vehicle in the present embodiment.

[0010] The present embodiment will be described below with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0011] In the operation of the wireless communication system of this embodiment, existing technology is used as appropriate. However, the existing technology is, for example, the existing LTE, but is not limited to the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems after LTE-Advanced (e.g., NR), unless otherwise specified.

[0012] In addition, in the present embodiment described below, terms such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel) used in existing LTE are used. This is for convenience of description, and similar signals, functions, etc. may be called by other names. In addition, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily stated as "NR-".

[0013] In addition, in this embodiment, the duplex method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or another method (for example, flexible duplex, etc.).

[0014] Furthermore, in this embodiment, "configuring" radio parameters etc. may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0015] Fig. 1 is a diagram showing a configuration example (1) of a wireless communication system according to this embodiment. As shown in Fig. 1, the wireless communication system according to this embodiment includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0016] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain. The time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is, for example, transmitted via NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0017] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures propagation path quality based on the reception results of the reference signals.

[0018] The terminal 20 is capable of performing carrier aggregation, which aggregates multiple cells (multiple CCs (Component Carriers)) to communicate with the base station 10. In carrier aggregation, one PCell (Primary cell) and one or more SCells (Secondary cells) are used. Also, a PUCCH-SCell having a PUCCH may be used.

[0019] Fig. 2 is a diagram showing an example (2) of a wireless communication system in this embodiment. Fig. 2 shows an example of the configuration of a wireless communication system when DC (Dual Connectivity) is implemented. As shown in Fig. 2, a base station 10A serving as a Master Node (MN) and a base station 10B serving as a Secondary Node (SN) are provided. The base station 10A and the base station 10B are each connected to a core network. The terminal 20 can communicate with both the base station 10A and the base station 10B.

[0020] The cell group provided by the base station 10A, which is an MN, is called an MCG (Master Cell Group), and the cell group provided by the base station 10B, which is an SN, is called an SCG (Secondary Cell Group). In addition, in DC, the MCG is composed of one PCell and one or more SCells, and the SCG is composed of one PSCell (Primary SCG Cell) and one or more SCells.

[0021] The wireless communication system in this embodiment may have the system configuration shown in FIG. 1, the system configuration shown in FIG. 2, or a system configuration other than these.

[0022] 3 is a diagram showing an example of a test configuration in this embodiment. The information processing device 40 may be called a test system including, for example, a server, a PC, a measuring instrument, a load generator, a signal generator, or at least one of these devices.

[0023] The information processing device 40 may receive a signal from the terminal 20 or transmit a signal to the terminal 20 in order to verify the performance of the terminal 20 in a high-load state. The information processing device 40 may be connected to a network and communicate with the terminal 20 via the network. The information processing device 40 may generate a load and apply the load to the terminal 20. The information processing device 40 may measure or monitor the performance (e.g., throughput) of the terminal 20.

[0024] The information processing device 40 executes the above functions using hardware components shown in Fig. 19, which will be described later. Some of the above functions may be executed by the information processing device 40, and the remaining functions may be realized by cloud computing.

[0025] When a terminal in a wireless communication system becomes overloaded, the terminal may not be able to maintain normal operation or may be damaged. The conventional 3GPP standard introduced a function for a terminal to notify a network in order to resolve or avoid a high-load state of the terminal. For example, a high-load state of the terminal refers to a state in which the terminal is overheating due to an increase in the internal temperature of the terminal. Conventionally, a function has been introduced in which a terminal transmits UE assistance information (UAI) to a network to prevent the terminal from overheating. The UAI includes information for restricting parameters related to communication performance, such as the terminal's bandwidth (BW), the number of component carriers (CCs), and the number of MIMO layers. By transmitting the UAI, the terminal can control the network to perform communication with a reduced load on the terminal.

[0026] It is assumed that a terminal in a high-load state will take action to resolve the high-load state voluntarily, for example, by suspending applications, cutting off communications, etc. On the other hand, it is also assumed that when or before the terminal is in a high-load state, the terminal will take action to resolve / avoid the high-load state by requesting the network to limit communication performance.

[0027] If a function for realizing the above-described terminal operation is supported in future standard specifications (e.g., future 3GPP releases), it will be necessary to test to ensure the terminal's ability to resolve / avoid high-load conditions. However, there have been no existing terminal performance test specifications that ensure whether the terminal can properly report UAI.

[0028] Furthermore, it is difficult to accurately and uniformly measure and test the "load" of devices with diverse communication functions available on the market. For example, an overheating condition is an example of a "high load" condition in which a device cannot maintain its performance. When considering a test to detect an overheating condition (i.e., a high temperature condition) of a device and verify that the overheating condition has been avoided or resolved by a specific function, one possible method would be to measure the internal temperature of the device and observe changes in the measured internal temperature. However, such a method for measuring the internal temperature of a device is not necessarily provided by the third-party organization conducting the test.

[0029] The temperature at which a terminal overheats may be affected by the terminal's performance and shape. In other words, the internal temperature used as the criterion for determining whether a terminal is overheated may vary depending on the vendor or the vendor's terminal. Therefore, it is difficult to determine how to avoid or resolve an overheating state using a unified standard in the 3GPP standard. If such a standard for determining an overheating state were to be standardized, it could hinder vendors' freedom in implementing terminal and network operations.

[0030] Tests may be conducted under conditions where it is not possible to measure load (e.g., the internal temperature of the terminal), or even if testing is possible, testing must be conducted under the assumption that absolute values ​​are not used and uniform standards are not established. A high load on the terminal is also expected to affect terminal performance (e.g., throughput), and the above-mentioned alert function may be tested by observing terminal performance. On the other hand, as mentioned above, performance testing must also be conducted under the assumption that absolute values ​​are not used and uniform standards are not established.

[0031] Given the difficulty of detecting high load conditions caused by the internal temperature of a device, alternative tests may be performed using any device performance indicator. For example, Figure 4 shows an example of monitoring the impact of throughput as an example of ensuring performance under high load conditions. If it is assumed that device performance cannot be maintained under high load conditions, throughput may deteriorate due to factors such as the inability to transmit appropriate signals / channels. From the perspective of avoiding or resolving high load conditions, a test could be considered that defines "high load" using a specific threshold and verifies that the alert function operates so that the load does not fall below that threshold. However, as with the discussion of load above, it is conceivable that it would be difficult to set reasonable standards across devices because the impact depends on the vendor's implementation.

[0032] According to this embodiment, a test method can be defined to ensure the terminal's ability to perform an alert function to avoid / resolve a high-load state. The test method of this embodiment can appropriately determine whether a function for resolving / avoiding a high-load state in a terminal under a high load is operating normally, without using a terminal load that is difficult or impossible to measure. Furthermore, according to this embodiment, a terminal performance test under a high load can be realized without hindering vendors' free implementation of terminals.

[0033] The "load" in this embodiment may be, for example, the terminal temperature, or the power consumption or computational processing amount of a terminal having a communication function or a module that is part of the terminal (for example, a chipset or a CPU). The application of a load to the terminal 20 may be, for example, the application of a voltage to the terminal 20, the transmission of a signal (a U-Plane signal and / or a C-Plane signal), or the application of a load by any method.

[0034] The "performance" of the terminal in this embodiment may be at least one of, for example, throughput, terminal error rate performance (e.g., BLER (Block Error Rate) / BER (Bit Error Rate) in downlink (DL) / uplink (UL) data channel / control channel / broadcast channel), feedback performance from the terminal (e.g., reception quality, CSI report (e.g., CQI, PMI, RI)), DL / UL communication success rate performance, or DL / UL communication delay performance.

[0035] The terminal 20 in this embodiment has a function of transmitting a signal for resolving / avoiding the high-load state based on detection of the high-load state of the terminal itself. In this embodiment, the signal used for resolving / avoiding the high-load state of the terminal 20 may be referred to as, for example, an alert, an alert signal, a warning signal, a notification, or information (terminal assistance information). UAI (UE assistance information) is an example of an alert.

[0036] In this embodiment, the alert capability is the capability of the terminal 20 to execute a function of sending a signal (issuing an alert) to resolve / avoid a high-load state in which the terminal performance cannot be maintained due to, for example, a significantly high "load" such as the internal temperature of the terminal 20.

[0037] According to this embodiment, a test is defined to ensure the alert capability using the timing at which the alert is transmitted by the terminal 20. The method for testing terminal performance in this embodiment will be described using the following example.

[0038] In the following example, a method is shown for testing the alert capability based on an alert transmitted from the terminal 20. However, the test method in this embodiment may also be applied to a method in which a network (e.g., the base station 10) transmits an alert to resolve / avoid a high load state of the terminal 20, and the alert capability is ensured based on the terminal 20 receiving the alert.

[0039] (Example 1-1) In Example 1-1, instead of measuring the "load" itself on the terminal 20, a test for ensuring the alert capability may be defined using the timing at which an alert is sent / received at the terminal 20. As shown in FIG. 5 , the test may be started based on the application of a load to the terminal 20. The test may start simultaneously with the application of the load to the terminal 20. For example, predetermined periods (X sec and Y sec) may be defined based on the elapsed time from the start of the test. In the test, whether or not an alert is issued within each period may be used as a judgment index, and based on this judgment index, it may be determined whether or not the alert capability is ensured at the terminal 20.

[0040] 6 is a flowchart showing an example of a procedure for testing terminal performance under high load in the embodiment 1-1. The procedure for testing terminal performance in FIG.

[0041] 6 has a function of transmitting an alert when a high load state of the terminal itself is detected. A load is applied to the terminal 20 under test.

[0042] 6, in step S101, it is determined whether the terminal 20 has issued an alert within X seconds. X seconds is an example of a period set after a load is applied to the terminal 20.

[0043] If the answer is Yes in step S101, it is determined in step S102 whether the terminal has issued an alert within Y seconds. Y seconds is an example of a period set after a load is applied to the terminal 20. Y seconds may start when an alert is sent from the terminal 20 within the X-second period.

[0044] If the answer is Yes in step S102, the test result is determined to be "Fail" in step S103. If the answer is No in step S102, the test result is determined to be "Pass" in step S104.

[0045] If the answer is No in step S101, then in step S105 it is determined whether the terminal issued an alert within Y seconds. If the answer is Yes in step S105, then in step S106 the test result is determined to be "Fail." If the answer is No in step S105, then in step S107 the test result is determined to be "Pass." Note that the test result may also be determined to be "Fail" in step S107.

[0046] 7 is a diagram showing an example of a determination method by a terminal performance test under high load conditions in Example 1-1. The terminal operation within X sec, the terminal operation within Y sec, and the determination results in FIG. 7 correspond to the flowchart in FIG.

[0047] For example, if the terminal 20 issues an alert immediately after applying a load, it is possible that the terminal 20 lacks the ability to suppress the temperature, and therefore, in the terminal operation within X seconds in Fig. 7, the operation of the terminal 20 issuing an alert may be determined as "Fail." If the terminal 20 issues an alert again after issuing an alert, it is possible that the high load state has not been resolved by the alert function, and therefore, in the terminal operation within Y seconds in Fig. 7, the operation of the terminal 20 issuing an alert may be determined as "Fail."

[0048] For example, in case #4 of FIG. 7, the terminal 20 may be judged to be robust to high load conditions and judged as "Pass," or the capability of the alert function may not be confirmed and so the case may be judged as "Fail."

[0049] In this way, according to the method for testing terminal performance of Example 1-1, a load is applied to terminal 20 that has the function of transmitting an alert based on the detection of a high load state of the terminal itself, and it is detected whether an alert has been transmitted from terminal 20 during X seconds (first period) and Y seconds (second period) that are set after the load is applied to terminal 20, and whether terminal 20 has the capability to execute the function of transmitting an alert may be determined based on whether an alert has been transmitted during the X second period and whether an alert has been transmitted during the Y second period. Furthermore, X seconds (first period) may start when a load is applied to terminal 20.

[0050] This makes it possible to define a test method that has not been defined in the past to ensure the terminal's ability to perform an alert function for avoiding / resolving a high load state of the terminal 20. The test method of this embodiment makes it possible to test the terminal's ability to perform the alert function by using whether or not an alert is sent from the terminal 20 and the timing of the transmission, without using the terminal's load, which is difficult or impossible to measure.

[0051] (Example 1-2) The test in Example 1-1 is started at the same time as a load is applied to the terminal 20. On the other hand, since it is expected that it takes time for the influence of the load to reach a certain amount after the load is applied to the terminal 20, the test may be started after the influence of the load reaches a certain amount.

[0052] 8, the test may be started after a load is applied and reaches a certain level, or predetermined periods (X sec and Y sec) may be determined based on the time elapsed since the start of the test. In the test, whether or not an alert is issued within each period may be used as a judgment index, and based on this judgment index, it may be determined whether or not the alert capability is ensured in the terminal 20.

[0053] The determination method in the terminal performance test of the embodiment 1-2 may be the same as the determination method in the embodiment 1-1 shown in FIG.

[0054] In Example 1-2, for example, issuing an alert during the period from when a load is applied until measurement is started may indicate a lack of temperature suppression capability, so the operation of the terminal 20 issuing an alert during the terminal operation within X seconds in Fig. 7 may be determined as "Fail." In Example 1-2, issuing an alert again after issuing an alert means that the high load state has not been resolved by the alert function, so the operation of the terminal 20 issuing an alert during the terminal operation within Y seconds in Fig. 7 may be determined as "Fail."

[0055] In Example 1-2, case #4 in Figure 7 may be judged as "Pass" because the terminal 20 is determined to be robust to high-load conditions, or may be judged as "Fail" because the capability of the alert function cannot be confirmed.

[0056] Thus, according to Example 1-2, X seconds (first period) may start when the load applied to the terminal 20 reaches a predetermined amount.

[0057] (Example 2-1) In the tests in Examples 1-1 and 1-2, issuing an alert again after issuing an alert is considered to be a sign that the high-load state has not been resolved by the alert function. On the other hand, in Example 2-1, it is assumed that it may take some time for the high-load state to settle down after issuing an alert, and a test may be specified to ensure the relevant capability by providing a period during which the test results are not affected even if an alert is issued again.

[0058] 9, in Example 2-1, the test may be started simultaneously with the application of a load to the terminal 20, and predetermined periods (X, X', and Y) may be determined based on the time elapsed since the start of the test. In the test, the presence or absence of an alert being issued within each period may be used as a judgment index, and based on the judgment index, it may be determined whether the alert capability is ensured in the terminal 20.

[0059] FIG. 10 is a diagram showing an example of a determination method based on a terminal performance test under a high load in Example 2-1.

[0060] In the case of #1 in Figure 10, if an alert is detected by the terminal 20 within X seconds, it is determined that the terminal operation within X' seconds does not affect the test result, and an alert is detected by the terminal 20 within Y seconds, the test result may be determined to be "Fail".

[0061] In the case of #2 in Figure 10, if an alert is detected by the terminal 20 within X seconds, it is determined that the terminal operation within X' seconds does not affect the test result, and no alert is detected by the terminal 20 within Y seconds, the test result may be determined to be "Pass."

[0062] In the case of #3 in Figure 10, no alert is detected by the terminal 20 within X seconds, and the terminal operation within X' seconds is not taken into consideration because no alert was detected within X seconds. If an alert is detected by the terminal 20 within Y seconds, the test result may be determined to be "Fail".

[0063] 10, no alert issuance by the terminal 20 is detected within X seconds, and the terminal operation within X' seconds is not taken into consideration because no alert issuance is detected within X seconds, and if no alert issuance by the terminal 20 is detected within Y seconds, the test result may be determined as "Pass" or "Fail." Case #4 may be determined as Pass because the terminal 20 is determined to be robust to high-load conditions, or as Fail because the capability of the alert function cannot be confirmed.

[0064] In the judgment made by the test in Example 2-1, it may be considered that issuing an alert immediately after a load is applied is undesirable because it may result in a lack of temperature suppression capability.

[0065] In the judgment based on the test in Example 2-1, it may be assumed that it takes time for the high load state to settle down after the issuance of an alert, and it may be considered that an alert may be issued again during the X' period.

[0066] In the judgment based on the test in Example 2-1, it may be considered that the issuance of an alert again during the response period (Y) after the issuance of an alert means that the high load state has not been resolved by the alert function.

[0067] (Example 2-2) In the test of Example 2-1, the test is started simultaneously with the application of a load to the terminal 20. On the other hand, in Example 2-2, it is assumed that it takes time for the influence of the load to reach a certain amount after the load is applied, and the test may be started after the influence of the load reaches a certain amount.

[0068] 11, in Example 2-2, the test may be started after a load is applied to the terminal 20 and the load reaches a certain amount, or the predetermined periods (X, X', and Y) may be determined based on the elapsed time from the start of the test. In the test, whether or not an alert is issued within each period may be used as a judgment index, and based on the judgment index, it may be determined whether or not the alert capability is guaranteed in the terminal 20.

[0069] The determination method by the terminal performance test in Example 2-2 may be the same as the determination method in Example 2-1 shown in FIG.

[0070] In determining the results of the test in Example 2-2, it may be considered that issuing an alert during the period from when a load is applied to the terminal 20 until measurement is started may result in a lack of temperature suppression capability.

[0071] In the judgment based on the test in Example 2-2, it may be assumed that it takes time for the high load state to settle down after the issuance of an alert, and it may be considered that an alert may be issued again during the X' period.

[0072] In the judgment based on the test in Example 2-2, it may be considered that the issuance of an alert again during the response period (Y) after the issuance of an alert means that the high load state has not been resolved by the alert function.

[0073] In the test judgment in Example 2-2, Case #4 in Figure 10 may be judged as Pass because the terminal 20 is judged to be robust to high-load conditions, or it may be judged as Fail because the capability of the alert function cannot be confirmed.

[0074] (Example 3-1) In the tests of Examples 2-1 and 2-2 described above, the time shifted to X' seconds when an alert was confirmed within X seconds, but in Example 3-1, the time shifted to X' seconds after X seconds had elapsed.

[0075] 12, the test may be started simultaneously with the application of a load to the terminal 20, and predetermined periods (X, X', and Y) may be determined based on the time elapsed since the start of the test. In the test, whether or not an alert is issued within each period may be used as a judgment index, and based on this judgment index, it may be determined whether or not the alert capability is ensured in the terminal 20.

[0076] FIG. 13 is a diagram showing an example of a determination method based on a terminal performance test under a high load in Example 3-1.

[0077] In the case of #1 in FIG. 13, if an alert is detected by the terminal 20 within X seconds, it is determined that the terminal operation within X' seconds does not affect the test result, and an alert is detected by the terminal 20 within Y seconds, the test result may be determined to be "Fail."

[0078] In the case of #2 in Figure 13, if an alert is detected by the terminal 20 within X seconds, it is determined that the terminal operation within X' seconds does not affect the test result, and no alert is detected by the terminal 20 within Y seconds, the test result may be determined to be "Pass."

[0079] In the case of #3 in Figure 13, no alert is detected by the terminal 20 within X seconds, and the terminal operation within X' seconds is not taken into consideration because no alert was issued within X seconds. If an alert is detected by the terminal 20 within Y seconds, the test result may be determined to be "Fail".

[0080] 13, no alert issuance by the terminal 20 is detected within X seconds, and the terminal operation within X' seconds is not taken into consideration because no alert issuance is detected within X seconds, and if no alert issuance by the terminal 20 is detected within Y seconds, the test result may be determined as "Pass" or "Fail." Case #4 may be determined as Pass because the terminal 20 is determined to be robust to high-load conditions, or as Fail because the capability of the alert function cannot be confirmed.

[0081] In the judgment based on the test of Example 3-1, it may be considered that issuing an alert immediately after a load is applied to the terminal 20 may result in a lack of temperature suppression capability.

[0082] In the judgment based on the test of Example 3-1, it may be assumed that it takes time for the high load state to settle down after the issuance of an alert, and it may be considered that an alert may be issued again during the X' period.

[0083] In the judgment based on the test in Example 3-1, it may be considered that issuing an alert again after X period of time may result in a lack of temperature suppression capability.

[0084] In the judgment based on the test of Example 3-1, it may be considered that the issuance of an alert again during the response period (Y) after the issuance of an alert means that the high load state has not been resolved by the alert function.

[0085] (Example 3-2) In the test of Example 3-1, the test is started simultaneously with the application of a load to the terminal 20. On the other hand, in Example 3-2, it is assumed that it takes time for the influence of the load to reach a certain amount after the load is applied to the terminal 20, and the test may be started after the influence of the load reaches a certain amount.

[0086] 14, the test may be started after a load is applied to the terminal 20 and the load reaches a certain amount, or predetermined periods (X, X', and Y) may be determined based on the elapsed time from the start of the test. In the test, whether or not an alert is issued within each period may be used as a judgment index, and based on the judgment index, it may be determined whether or not the alert capability is ensured in the terminal 20.

[0087] The determination method based on the terminal performance test in Example 3-2 may be the same as the determination method in Example 3-1 shown in FIG.

[0088] In the judgment based on the test of Example 3-2, it may be considered that issuing an alert during the period from when a load is applied until measurement is started may result in a lack of temperature suppression capability.

[0089] In the judgment based on the test of Example 3-2, it may be assumed that it takes time for the high load state to settle down after the issuance of an alert, and it may be considered that an alert may be issued again during the X' period.

[0090] In the judgment based on the test in Example 3-2, it may be considered that issuing an alert again after X period of time after issuing an alert may result in a lack of temperature suppression capability.

[0091] In the judgment based on the test of Example 3-2, it may be considered that the issuance of an alert again during the response period (Y) after the issuance of an alert means that the high load state has not been resolved by the alert function.

[0092] In the judgment based on the test of Example 3-2, case #4 in Figure 13 may be judged as Pass because it is determined that the terminal 20 is robust to high-load conditions, or it may be judged as Fail because the capability of the alert function cannot be confirmed.

[0093] In the test to ensure the alert capability of each of the above embodiments, if the terminal 20 does not issue an alert within X seconds and does not issue an alert within Y seconds (case #4 in FIGS. 7, 10, and 13), it is possible to ensure that the terminal 20 is robust to high-load conditions, but it is not possible to test the capability of the alert function itself of the terminal 20.

[0094] The test result for Case #4 in Figures 7, 10 and 13 is described as "either Pass, which indicates that the terminal is robust to high load conditions, or Fail, which indicates that the alert function capability cannot be confirmed." However, assuming that additional tests will be conducted when it is not possible to determine whether the result is Pass or Fail in a single test, the test to ensure the alert capability may be specified in a multi-stage configuration.

[0095] Example 1: If a test result is obtained in one test, there is no need to conduct additional tests, etc. Example 2: If a test result is not obtained in one test, additional tests may be conducted, etc. (multi-stage testing) Example 2-1: If the additional test results in case #1 (test result: Fail), case #2 (test result: Pass) or case #3 (test result: Fail), the test results for each case may be used, etc. Example 2-2: If the additional test results in case #4, further additional tests may be conducted, or the terminal may be judged to be robust to high load conditions and be judged as Pass, or it may be judged as Fail in the sense that the capabilities of the alert function cannot be confirmed, etc.

[0096] As another example, the test may be one that suppresses the occurrence of Case #4 itself, or a test may be specified that assumes the load on the terminal in a real environment, applies loads other than those from the perspective of wireless communication in addition to those from the perspective of wireless communication (set as parameters), and ensures the ability to issue alerts.

[0097] For example, existing applications (e.g., games, cameras, videos, telephones) may be used to apply loads other than those related to wireless communication, or 3GPP-specific applications may be developed and used to apply loads.

[0098] By combining the above, a test may be specified in which the load applied is changed between the first stage and subsequent tests.

[0099] Example 1: In the first stage of testing, a load from the perspective of wireless communication is applied, and in subsequent additional tests, loads other than those from the perspective of wireless communication are also applied. Example 2: From the first stage of testing, loads other than those from the perspective of wireless communication are also applied in addition to loads from the perspective of wireless communication.

[0100] (Variation) As a variation of this embodiment, instead of measuring the "load", any terminal performance (for example, throughput) may be measured, and a test may be defined to ensure the alert capability of the terminal 20 by using the timing of alerts based on an increase or decrease in the measured terminal performance.

[0101] The modified example of this embodiment may be implemented independently or in combination with the above-described embodiments.

[0102] For example, the success or failure of the test may be determined based on the operation of the terminal 20 within a period set according to the timing when the measured terminal performance falls below (or exceeds) a predetermined threshold. The measurement of the terminal performance may be started simultaneously with the application of a load to the terminal 20, or may be started after the load applied to the terminal 20 reaches a certain amount.

[0103] For example, as shown in FIG. 15, a high throughput state may be maintained with a load applied to the terminal 20, and it may be monitored whether an alert is issued within a period (X) until the terminal performance falls below a predetermined threshold.

[0104] For example, as shown in FIG. 16, it may be possible to monitor whether an alert is issued within a predetermined period of time after the terminal performance falls below a predetermined threshold.

[0105] For example, after the terminal 20 issues an alert, a period (X') may be set during which the test results will not be affected even if the terminal 20 issues an alert again.

[0106] The above-mentioned predetermined threshold may be based on the maximum measured throughput of the terminal. For example, the predetermined threshold may be a value defined relatively, such as X% of the maximum throughput (peak throughput (peak rate)). The predetermined threshold may be a value defined based on the relative value of the peak rate calculated from given parameters.

[0107] <Base Station> Fig. 17 is a diagram showing an example of the functional configuration of the base station 10 in this embodiment. As shown in Fig. 17, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 17 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations according to this embodiment.

[0108] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The transmitter 110 also transmits inter-network node messages to other network nodes. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. The receiver 120 also receives inter-network node messages from other network nodes.

[0109] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20. The setting information includes, for example, information related to Doppler frequency shift correction.

[0110] As described in the embodiments, the control unit 140 performs control related to Doppler frequency shift correction. The functional unit of the control unit 140 related to signal transmission may be included in the transmitting unit 110, and the functional unit of the control unit 140 related to signal reception may be included in the receiving unit 120.

[0111] <Terminal> Fig. 18 is a diagram showing an example of the functional configuration of the terminal 20 in this embodiment. As shown in Fig. 18, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 18 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations according to this embodiment.

[0112] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, and the like transmitted from the base station 10. For example, the transmitter 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 220 receives the PSCCH, PSSCH, PSDCH, or PSBCH, and the like, from the other terminal 20.

[0113] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. The setting unit 230 also stores setting information that is set in advance. The setting information includes, for example, information related to Doppler frequency shift correction.

[0114] As described in the embodiments, the control unit 240 performs control related to Doppler frequency shift correction. The function unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the function unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

[0115] (Hardware Configuration) The block diagrams (FIGS. 17 and 18) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0116] Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0117] For example, the base station 10, the terminal 20, the information processing device 40, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 19 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0118] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configurations of the base station 10, the terminal 20, and the information processing device 40 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0119] Each function in the base station 10, the terminal 20 and the information processing device 40 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0120] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0121] Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002 and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 17 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIG. 18 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may also be transmitted from a network via a telecommunications line.

[0122] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0123] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0124] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0125] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0126] Furthermore, each device, such as the processor 1001 and the storage device 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0127] Furthermore, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0128] Fig. 20 shows an example configuration of a vehicle 2001. As shown in Fig. 20, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0129] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0130] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0131] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0132] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013 or the like to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001. The information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that output information to the outside.

[0133] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0134] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0135] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0136] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0137] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0138] (Summary of the embodiment) (Section 1) A method for testing terminal performance includes the steps of applying a load to a terminal having a function of transmitting a signal based on detection of a high load state of the terminal itself, detecting whether the signal has been transmitted from the terminal during a first period and a second period set after the load is applied to the terminal, and determining whether the terminal has the capability to execute the function based on whether the signal has been transmitted from the terminal during the first period and whether the signal has been transmitted from the terminal during the second period. (Section 2) In the method for testing terminal performance described in Section 1, the first period starts when the load is applied. (Section 3) In the method for testing terminal performance described in Section 1, the first period starts when the applied load reaches a predetermined amount. (Section 4) In the method for testing terminal performance described in Section 1, the second period starts when the signal is transmitted from the terminal during the first period. (Clause 5) A method for testing terminal performance comprises the steps of applying a load to a terminal having a function of transmitting a signal based on detection of a high-load state of the terminal, measuring the terminal performance of the terminal, detecting whether the measured terminal performance has fallen below a predetermined threshold during a period set after the load was applied to the terminal, and determining whether the terminal has the capability to execute the function based on whether the measured terminal performance has fallen below the predetermined threshold during the period. (Clause 6) An information processing device comprises: a receiving unit that receives a signal from a terminal having a function of transmitting a signal based on detection of a high-load state of the terminal, and a control unit that detects whether the signal has been transmitted from the terminal during a first period and a second period set after the load was applied to the terminal, and the control unit determines whether the terminal has the capability to execute the function based on whether the signal has been transmitted from the terminal during the first period and the second period.

[0139] Any of the above configurations can specify a test method for ensuring the terminal's ability to perform an alert function to avoid or resolve a high-load state. The above configurations make it possible to appropriately determine whether a function for avoiding or resolving a high-load state in a terminal under high load is operating normally, without using terminal loads that are difficult or impossible to measure. Furthermore, the above configurations enable terminal performance testing under high load conditions to be realized without hindering vendors' freedom in implementing terminals.

[0140] (Supplementary Notes on the Embodiments) Although the present embodiment has been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (as long as there is no contradiction). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to this embodiment and the software operated by the processor of the terminal 20 according to this embodiment may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

[0141] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0142] Each aspect / embodiment described in the present disclosure may be implemented using any of the following standards: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.34 ( The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of LTE and / or LTE-A with 5G).

[0143] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be rearranged unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0144] In this specification, a specific operation described as being performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0145] The information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0146] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0147] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0148] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0149] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0150] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0151] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0152] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0153] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0154] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0155] In the present disclosure, terms such as "base station (BS)," "radio base station," "base station device," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0156] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage.

[0157] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0158] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0159] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0160] At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0161] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0162] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0163] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0164] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0165] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0166] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0167] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0168] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0169] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0170] A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0171] Numerology may be communication parameters that apply to the transmission and / or reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, etc.

[0172] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0173] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0174] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0175] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0176] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0177] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0178] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0179] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0180] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0181] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

[0182] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0183] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0184] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0185] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0186] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0187] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0188] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various changes may be made to the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.

[0189] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0190] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0191] The aspects / embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Notification of predetermined information (e.g., notification that "X is true") is not limited to explicit notification, but may be implicit (e.g., not notifying the predetermined information).

[0192] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0193] 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheels 2008 Rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotation speed sensor 2023 Tire pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. A method for testing terminal performance, comprising the steps of: applying a load to a terminal that has the function of transmitting a signal based on the detection of a high load state of the terminal itself; detecting whether the signal has been transmitted from the terminal during a first period and a second period that are set after the load has been applied to the terminal; and judging whether the terminal has the ability to execute the function based on whether the signal has been transmitted from the terminal during the first period and whether the signal has been transmitted from the terminal during the second period.

2. The method for testing terminal performance according to claim 1, wherein the first period begins when the load is applied.

3. The method for testing terminal performance according to claim 1, wherein the first period begins when the applied load reaches a predetermined amount.

4. The method for testing terminal performance according to claim 1, wherein the second period begins at the time of transmission of the signal from the terminal within the first period.

5. A method for testing terminal performance, comprising the steps of: applying a load to a terminal having a function of transmitting a signal based on the detection of a high load state of the terminal itself; measuring the terminal performance of the terminal; detecting whether the measured terminal performance has fallen below a predetermined threshold within a period set after the load is applied to the terminal; and determining whether the terminal has the ability to execute the function based on whether the measured terminal performance has fallen below the predetermined threshold within the period.

6. An information processing device comprising: a receiving unit that receives a signal from a terminal that has the function of transmitting a signal based on the detection of a high load state of the terminal; and a control unit that detects whether the signal has been transmitted from the terminal during a first period and a second period that are set after the load is applied to the terminal, wherein the control unit determines whether the terminal has the ability to execute the function based on whether the signal has been transmitted from the terminal during the first period and whether the signal has been transmitted from the terminal during the second period.

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