Measurement precision test methods, communication device, communication system, and storage medium

Abstract

Provided in the embodiments of the present disclosure are measurement precision test methods, a communication device, a communication system, and a storage medium. A measurement precision test method comprises: receiving first information sent by a second device, the first information indicating a plurality of measurement results of the second device for at least one tracking reference signal (TRS) pair; and according to the plurality of measurement results, determining whether the measurement precision of the second device passes a test. The technical solution provided by the embodiments of the present disclosure directly uses the plurality of measurement results of measurement by the second device to determine whether the measurement precision of the second device passes the test, and does not need introduction of reference results, thus achieving easy implementation and achieving high test accuracy for the measurement precision of the second device.

Description

Measurement accuracy test method, communication equipment, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a measurement accuracy testing method, communication equipment, communication system, and storage medium. Background Art

[0002] Tracking Reference Signal (TRS)-based time-domain channel property (TDCP) reports are used by terminals to provide network equipment with information about channel variability. Specifically, the measurement results carried in TDCP reports can be used by network equipment to obtain information about downlink channels. Before a terminal is put into service, its measurement performance needs to be tested to ensure that the TDCP reports submitted to the network equipment after the terminal is put into service are relatively accurate.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide a measurement accuracy testing method, a communication device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a measurement accuracy test method is provided, which is performed by a first device and includes: receiving first information sent by a second device, the first information indicating multiple measurement results of the second device on at least one tracking reference signal TRS pair; and determining whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0006] According to a second aspect of an embodiment of the present disclosure, a measurement accuracy test method is provided, which is performed by a second device and further includes: the second device performs multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; sends first information to a first device, wherein the first information indicates multiple measurement results of the at least one TRS pair; and the multiple measurement results are used to determine whether the measurement accuracy of the second device passes the test.

[0007] According to a third aspect of an embodiment of the present disclosure, a first device is provided, comprising: a receiving module configured to receive first information sent by a second device, wherein the first information indicates multiple measurement results of the second device on at least one tracking reference signal TRS pair; and a processing module configured to determine whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0008] According to a fourth aspect of an embodiment of the present disclosure, a second device is provided, comprising: a processing module configured to perform multiple measurements on at least one tracking reference signal (TRS) pair to obtain multiple measurement results; a sending module configured to send first information to a first device, wherein the first information indicates multiple measurement results of the at least one TRS pair; and the multiple measurement results are used to determine whether the measurement accuracy of the second device passes the test.

[0009] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, wherein the communication device includes: one or more processors; wherein the processor is used to call instructions so that the communication device executes the measurement accuracy test method provided by any technical solution of the aforementioned first aspect and / or second aspect.

[0010] According to a sixth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, which, when executed on a communication device, enable the communication device to execute the measurement accuracy test method provided by the first aspect and / or the second aspect.

[0011] According to a seventh aspect of an embodiment of the present disclosure, a measurement accuracy test method is provided, which includes: a second device measures at least one tracking reference signal TRS pair according to measurement parameters to obtain a measurement result; sends first information to a first device according to the measurement result, the first information being used to indicate the measurement result of at least one TRS pair; the first device receives the first information sent by the second device, the first information being used to indicate the measurement result of at least one tracking reference signal TRS pair; determines a reference result according to the measurement parameters of the measurement result obtained by the second device; determines differential information between the measurement result and the reference result; and determines whether the measurement accuracy of the second device passes the test according to the differential information.

[0012] According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, comprising: a first device for executing the measurement accuracy test method of any technical solution of the first aspect; and a second device for executing the measurement accuracy test method of any technical solution of the second aspect.

[0013] According to the technical solution provided by the embodiment of the present disclosure, the first device receives multiple measurement results of at least one TRS pair from the second device, and determines whether the measurement accuracy of the second device passes the test based on the processing results (such as differential values ​​or distribution probability values) of the multiple measurement results. There is no need to introduce reference results during the test process, and the solution has the advantages of simple implementation and high accuracy in testing the measurement accuracy of the second device.

[0014] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0016] FIG1A is a schematic diagram showing an architecture of a communication system according to an exemplary embodiment;

[0017] FIG1B is a time domain schematic diagram of a TRS pair according to an exemplary embodiment;

[0018] FIG2A is an interactive schematic diagram illustrating a measurement accuracy testing method according to an exemplary embodiment;

[0019] FIG2B is an interactive schematic diagram illustrating a measurement accuracy testing method according to an exemplary embodiment;

[0020] FIG3A is a schematic flow chart showing a measurement accuracy testing method according to an exemplary embodiment;

[0021] FIG3B is a schematic flow chart of a measurement accuracy testing method according to an exemplary embodiment;

[0022] FIG3C is a schematic flow chart showing a measurement accuracy testing method according to an exemplary embodiment;

[0023] FIG4 is a flow chart showing a method for testing measurement accuracy according to an exemplary embodiment;

[0024] FIG5 is an interactive schematic diagram illustrating a measurement accuracy testing method according to an exemplary embodiment;

[0025] FIG6A is a schematic diagram illustrating a probability distribution function (PDF) of estimated correlation values ​​of historical measurements at two different Doppler frequency shifts when an SNR is 15 dB according to an exemplary embodiment;

[0026] FIG6B is a schematic diagram illustrating a cumulative distribution function (CDF) of estimated correlation values ​​of historical measurements at two different Doppler frequency shifts when an SNR is 15 dB according to an exemplary embodiment;

[0027] FIG6C is a schematic diagram showing a PDF of estimated correlation values ​​of historical measurements at two different Doppler frequency shifts when an SNR is 5 dB according to an exemplary embodiment;

[0028] FIG6D is a schematic diagram showing CDFs of estimated correlation values ​​of historical measurements at two different Doppler frequency shifts when an SNR is 5 dB according to an exemplary embodiment;

[0029] FIG7A is a schematic structural diagram of a first device according to an exemplary embodiment;

[0030] FIG7B is a schematic structural diagram of a second device according to an exemplary embodiment;

[0031] FIG8A is a schematic structural diagram of a communication device according to an exemplary embodiment;

[0032] FIG8B is a schematic structural diagram of a chip according to an exemplary embodiment. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure provide a measurement accuracy testing method and apparatus, communication equipment, a communication system, and a storage medium.

[0034] In a first aspect, an embodiment of the present disclosure provides a measurement accuracy test method, which is performed by a first device and includes: receiving first information sent by a second device, wherein the first information indicates multiple measurement results of the second device on at least one tracking reference signal TRS pair; and determining whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0035] Based on the above scheme, the first device will receive multiple measurement results of the second device on at least one TRS pair, and determine whether the measurement accuracy of the second device passes the test based on the processing results (such as differential values ​​or distribution probability values) of the multiple measurement results. There is no need to introduce reference results during the test process, and the implementation is simple and the test accuracy of the measurement accuracy of the second device is high.

[0036] In some embodiments of the first aspect, the measurement result includes at least one of the following: a channel instantaneous correlation value; an average value of multiple channel instantaneous correlation values; a median value of multiple channel instantaneous correlation values; wherein one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one of the TRS pairs.

[0037] Based on the above solution, the measurement result can be at least one of the channel instantaneous correlation value, the average value of the channel instantaneous correlation value and the median value of the channel instantaneous correlation value, which makes it convenient to flexibly select the measurement result according to test needs.

[0038] In some embodiments of the first aspect, the first information includes: a first measurement result of measuring the at least one TRS pair when the Doppler frequency shift is a first frequency shift; and a second measurement result of measuring the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0039] Based on the above scheme, the first device will receive the measurement results of at least one TRS pair measured by the second device under different Doppler frequency shifts, so as to determine the accuracy of the measurement results based on whether the changes in the measurement results corresponding to different Doppler frequency shifts are consistent with the changes in the Doppler frequency shift, thereby improving the feasibility of testing the measurement accuracy of the second device.

[0040] In some embodiments of the first aspect, determining whether the measurement accuracy of the second device passes the test based on the multiple measurement results includes: determining a differential value between the first measurement result and the second measurement result; and determining whether the measurement accuracy of the second device passes the test based on the differential value.

[0041] Based on the above solution, the first device calculates the difference between the measurement results corresponding to different Doppler frequency shifts and determines whether the measurement accuracy of the second device passes the test according to the difference, which has the characteristic of simple implementation.

[0042] In some embodiments of the first aspect, determining whether the measurement accuracy of the second device passes the test based on the differential value includes: determining whether the measurement accuracy of the second device passes the test based on whether the differential value is within a first range.

[0043] Based on the above solution, whether the measurement accuracy of the second device passes the test is determined directly based on whether the differential value is within the first range, which has the characteristics of simple implementation and accuracy.

[0044] In some embodiments of the first aspect, determining whether the measurement accuracy of the second device passes the test based on whether the differential value is within the first range includes at least one of the following: if the differential value is within the first range, determining that the measurement accuracy of the second device passes the test; if the differential value is outside the first range, determining that the measurement accuracy of the second device fails the test.

[0045] Based on the above solution, whether the measurement accuracy of the second device passes the test is determined directly based on whether the differential value is within the first range, which has the characteristics of simple implementation and accuracy.

[0046] In some embodiments of the first aspect, one Doppler shift in the first frequency shift and the second frequency shift is different, and the first range is different.

[0047] Based on the above scheme, the first device will determine the first range corresponding to the two Doppler frequency shifts according to the two Doppler frequency shifts when the second device performs TRS measurement, so that the first range participating in the measurement accuracy test of the second device corresponds to the measurement parameters of the second device measuring TRS, thereby improving the feasibility of the test of the measurement accuracy of the second device while improving the test accuracy.

[0048] In some embodiments of the first aspect, the differential value between the first measurement result and the second measurement result includes at least one of the following: a first differential value, the first differential value being the difference between an average value of multiple channel instantaneous correlation values ​​included in the first measurement result and an average value of multiple channel instantaneous correlation values ​​included in the second measurement result; a second differential value, the second differential value being the difference between a median value of the multiple channel instantaneous correlation values ​​included in the first measurement result and a median value of the multiple channel instantaneous correlation values ​​included in the second measurement result.

[0049] Based on the above scheme, the first differential value can be determined based on the average value of the instantaneous correlation values ​​of multiple channels under different Doppler frequency shifts; and / or, the second differential value can be determined based on the median value of the instantaneous correlation values ​​of multiple channels under different Doppler frequency shifts; and the first differential value and / or the second differential value can be used for testing, so that measurement results and / or differential values ​​can be flexibly and selectively generated later.

[0050] In some embodiments of the first aspect, a first range corresponding to the first differential value is different from a first range corresponding to the second differential value.

[0051] Based on the above scheme, different first ranges are set for the differential values ​​generated by different types of measurement results, so as to determine the corresponding first ranges according to the different types of measurement results and / or differential values, thereby improving the test feasibility of the measurement accuracy of the second device while improving the test accuracy.

[0052] In some embodiments of the first aspect, determining whether the measurement accuracy of the second device passes the test based on the multiple measurement results includes: determining a probability that the measurement values ​​in the multiple measurement results are within a second range; and determining whether the measurement accuracy of the second device passes the test based on whether the probability is within a third range.

[0053] Based on the above solution, by determining the probability that the measurement values ​​in the multiple measurement results sent by the second device are within the second range, whether the measurement accuracy of the second device passes the test is determined according to the probability, which has the characteristics of simple and accurate implementation.

[0054] In some embodiments of the first aspect, the method further includes: determining the second range according to the Doppler frequency shifts corresponding to the multiple measurement results; the second ranges corresponding to different Doppler frequency shifts are different.

[0055] Based on the above scheme, the second range corresponding to the Doppler frequency domain is determined directly according to the Doppler frequency shift corresponding to the multiple measurement results, and the probability that the multiple measurement results under the Doppler frequency shift are within the second range is used to determine whether the measurement accuracy of the second device passes the test, which has the characteristics of simple and accurate implementation.

[0056] In some embodiments of the first aspect, the method further includes: determining the third range according to the Doppler frequency shifts corresponding to the multiple measurement results, where different Doppler frequency shifts correspond to different third ranges.

[0057] Based on the above scheme, the third range corresponding to the Doppler frequency domain is determined directly according to the Doppler frequency shift corresponding to multiple measurement results, and whether the measurement accuracy of the second device passes the test is determined according to whether the probability corresponding to the Doppler frequency shift is within the corresponding third range. This scheme has the characteristics of simple and accurate implementation.

[0058] In some embodiments of the first aspect, the third range is determined based on a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift.

[0059] Based on the above scheme, the distribution probability of measurement results at each Doppler shift is determined based on the cumulative distribution curve of historical measurement results at different Doppler shifts. This facilitates the subsequent determination of the corresponding third range based on the Doppler shift corresponding to the measurement result. Based on whether the probability of multiple measurement results falling within the second range falls within the corresponding third range, the second device's measurement accuracy is determined to have passed the test, thereby improving the feasibility of testing the second device's measurement accuracy while also improving test accuracy.

[0060] In some embodiments of the first aspect, a signal-to-noise ratio corresponding to the measurement result is greater than or equal to a first value.

[0061] Based on the above solution, the accuracy of the test can be further improved by setting the signal-to-noise ratio during measurement.

[0062] In a second aspect, an embodiment of the present disclosure provides a measurement accuracy test method, which is executed by a second device and further includes: the second device performs multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; sends first information to the first device, wherein the first information indicates multiple measurement results of the at least one TRS pair; the multiple measurement results are used to determine whether the measurement accuracy of the second device passes the test.

[0063] Based on the above scheme, the second device performs multiple measurements on at least one TRS pair to obtain multiple measurement results, and sends first information indicating the multiple measurement results to the first device; so that the first device can determine whether the measurement accuracy of the second device passes the test based on the processing results (such as differential values ​​or distribution probability values) of the corresponding processing of the multiple measurement results. The scheme has the advantages of simple implementation and high accuracy in testing the measurement accuracy of the second device.

[0064] In some embodiments of the second aspect, the measurement result includes at least one of the following: a channel instantaneous correlation value; an average value of multiple channel instantaneous correlation values; a median value of multiple channel instantaneous correlation values; wherein one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one of the TRS pairs.

[0065] In some embodiments of the second aspect, the multiple measurement results include at least one of the following: a first measurement result of the at least one TRS pair when the Doppler frequency shift is a first frequency shift; and a second measurement result of the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0066] In some embodiments of the second aspect, a signal-to-noise ratio corresponding to the measurement result is greater than or equal to a first value.

[0067] In a third aspect, an embodiment of the present disclosure provides a first device, comprising: a receiving module configured to receive first information sent by a second device, wherein the first information indicates multiple measurement results of the second device on at least one tracking reference signal TRS pair; and a processing module configured to determine whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0068] In a fourth aspect, an embodiment of the present disclosure provides a second device, which includes: a processing module, configured to perform multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; a sending module, configured to send first information to a first device, wherein the first information indicates multiple measurement results of the at least one TRS pair; the multiple measurement results are used to determine whether the measurement accuracy of the second device passes the test.

[0069] In a fifth aspect, an embodiment of the present disclosure provides a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the measurement accuracy test method described in the optional implementation of the first aspect and / or the second aspect.

[0070] In a sixth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the measurement accuracy test method described in the optional implementation of the first aspect and / or the second aspect.

[0071] In a seventh aspect, an embodiment of the present disclosure provides a communication system, comprising: a first device, configured to execute the aforementioned measurement accuracy test method performed by the first device; and a second device, configured to execute the aforementioned measurement accuracy test method performed by the second device.

[0072] In an eighth aspect, an embodiment of the present disclosure provides a measurement accuracy testing method, wherein the method further includes: the second device performs multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; the second device sends first information to the first device, and the first information indicates multiple measurement results of the at least one TRS pair; the first device determines whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0073] In a ninth aspect, an embodiment of the present disclosure provides a program product. When the program product is executed by a communication device, the communication device executes the measurement accuracy test method described in the optional implementation of the first to sixth aspects.

[0074] In a tenth aspect, an embodiment of the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the measurement accuracy test method described in the optional implementation of the first aspect and / or the second aspect.

[0075] It is understandable that the first device, the second device, the communication system, the program product, and the computer program are all used to execute the method provided by the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0076] The present disclosure provides a measurement accuracy test method, communication device, communication system, and storage medium. In some embodiments, the terms measurement accuracy test method, measurement result processing method, information processing method, etc. are interchangeable.

[0077] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0078] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0079] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0080] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when articles such as "a", "an", "the" in English are used in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0081] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0082] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0083] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "in one case A, in another case B," or "in one case A, in another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, and C.

[0084] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0085] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first category of information" and the "second category of information" can be the same information or different information, and their contents can be the same or different.

[0086] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0087] In some embodiments, terms such as "...", "determine...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0088] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0089] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0090] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0091] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0092] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", 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, etc. can be used interchangeably.

[0093] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0094] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0095] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0096] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0097] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0098] FIG1A is a schematic diagram showing the architecture of a communication system according to an exemplary embodiment.

[0099] As shown in Figure 1A, a communication system 100 includes a terminal 101 and a network device 102. The network device 102 may include an access network device and / or a core network device.

[0100] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0101] In some embodiments, the terminal is also referred to as User Equipment (UE).

[0102] In some embodiments, the access network device may be, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0103] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0104] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0105] In some embodiments, a core network device may be a single device including one or more network elements, or may be multiple devices or a group of devices, each including one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0106] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0107] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0108] The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.18 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (WiMAX (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 (WiMAX (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other measurement accuracy test methods, and next-generation systems based on these. Furthermore, multiple systems may be combined (for example, LTE or LTE-A combined with 5G).

[0109] In some embodiments, when testing the accuracy of a terminal's TDCP report, the difference between the terminal's measurement result (also known as an estimated value) and a reference result (also known as an ideal value) is used as the measurement accuracy. The closer the reference result is to the actual channel correlation, the higher the test accuracy. Therefore, if the reference result differs significantly from the actual channel correlation, the terminal's measurement accuracy is determined to be inaccurate based on the reference result.

[0110] In view of this, FIG2A is an interactive diagram illustrating a measurement accuracy test method according to an exemplary embodiment. As shown in FIG2A , the embodiment of the present disclosure relates to a measurement accuracy test method for a communication system 100, the method comprising:

[0111] Step S2101: The second device performs multiple measurements on at least one TRS pair to obtain multiple measurement results.

[0112] In some embodiments, the second device may be various types of terminals in the communication system as shown in FIG. 1A .

[0113] In some embodiments, the second device may be a terminal. The second device may be a terminal under test.

[0114] FIG1B is a time domain diagram illustrating a TRS pair according to an exemplary embodiment. FIG1B shows two TRS pairs: a first TRS pair consisting of TRS0 and TRS2, and a second TRS pair consisting of TRS1 and TRS3. It can be seen that the two TRSs in a TRS pair have a time interval in the time domain. For example, the two TRSs in a TRS pair shown in FIG1B have a time interval (D) of one time slot between them.

[0115] Because the two TRSs in a TRS pair are transmitted at different time points, the channel changes between the first device and the second device, and the identical transmission parameters of the two TRSs in a TRS pair, the correlation between the measurement values ​​of the two TRSs in the TRS pair by the second device can reflect the channel changes. Here, the transmission parameters of the two TRSs in a TRS pair may include but are not limited to the transmit power, transmit beam, and / or transmit sequence of the TRSs.

[0116] For example, assuming that the network device sending the TRS is fixed on the ground and does not change, after the first device moves, the relative position between the first device and the network device sending the TRS changes, and the channel transmission changes.

[0117] In some embodiments, the measurement results of at least one TRS pair may include any information indicating a correlation between the measurement results of two TRSs in a TRS pair.

[0118] For example, the second device measures the phase of each TRS in a TRS pair, and calculates a correlation value based on the difference in the measured phases of the two TRSs using a correlation formula. This correlation may include a channel instantaneous correlation value.

[0119] In some embodiments, the measurement result may also be referred to as an estimation result. The measured instantaneous channel correlation value may also be referred to as an estimated correlation value.

[0120] For example, the channel instantaneous correlation value may be calculated using the following formula:

[0121] c(t,△t) is the instantaneous correlation of the channel.

[0122] t may be the sending time of the first TRS sent in a TRS pair.

[0123] Δt may be the time interval between the transmission times of two TRSs in a TRS pair, which may be one time slot or multiple symbols as shown in FIG1B .

[0124] N may be the number of subcarriers occupied when a TRS is transmitted.

[0125] h n (t) may be the measured value of the TRS sent on the nth subcarrier at time t.

[0126] h n (t+Δt) may be a measured value of the TRS sent at time t+Δt on the nth subcarrier.

[0127] Can be h n The conjugate of (t).

[0128] In some embodiments, the multiple measurement results of at least one TRS pair may indicate time-domain channel properties (TDCP) of the downlink channel.

[0129] In some embodiments, the second device performs multiple measurements on at least one TRS pair according to the measurement parameters to obtain multiple measurement results.

[0130] In some embodiments, the second device receives second information sent by the first device, where the second information includes a measurement parameter.

[0131] For example, the measurement parameters may include but are not limited to at least one of the following:

[0132] Doppler information, at least for indicating a plurality of Doppler frequency shifts when determining a measurement result based on a measurement of the TRS pair;

[0133] Signal-to-noise ratio information, at least used to indicate a signal-to-noise ratio used when determining a measurement result based on a measurement of the TRS pair;

[0134] The first indication is used to indicate the number of TRS pairs corresponding to the measurement result;

[0135] a second indication, used by the second device to determine a type of the measurement result;

[0136] A third indication is used by the second device to determine the number of measurement results that need to be sent to the first device in a test report;

[0137] The fourth indication is used for the number of measurements performed by the second device.

[0138] For example, F1 = f*v*c*cosθ, where F1 represents the Doppler shift frequency. The Doppler shift frequency can also be referred to as the frequency of the Doppler effect. F is the carrier frequency transmitting the TRS, v is the velocity of the first device, and c is the propagation velocity of the carrier. Typically, the propagation velocity of the carrier is equal to the speed of light. θ can be the angle formed by the direction of movement of the first device relative to the line connecting the first device and the network device transmitting the TRS.

[0139] In some embodiments, the Doppler information may be used to control the movement rate of the second device when performing the TRS test.

[0140] In some embodiments, the type of measurement result may include, but is not limited to, at least one of the following:

[0141] Instantaneous channel correlation values ​​corresponding to two TRSs in each TRS pair in at least one TRS pair;

[0142] an average value of multiple channel instantaneous correlation values ​​of at least one TRS pair;

[0143] The median value of multiple channel instantaneous correlation values ​​of at least one TRS pair.

[0144] In some embodiments, the signal-to-noise ratio information is used to indicate a minimum signal-to-noise ratio requirement when the second device obtains the measurement result of the at least one TRS pair.

[0145] The signal-to-noise ratio of the second device when measuring at least one TRS pair should meet the minimum signal-to-noise ratio requirement, so that the first device can determine the measurement accuracy of the second device based on the measurement result of at least one TRS pair measured by the second device.

[0146] In some embodiments, the minimum signal-to-noise ratio requirement may be that the signal-to-noise ratio (SNR) corresponding to the measurement result is greater than or equal to a first value. For example, the signal-to-noise ratio (SNR) corresponding to the measurement result should be greater than or equal to 15 dB.

[0147] Of course, the above is merely an example of measuring parameters, and the specific implementation is not limited to the above example.

[0148] In some embodiments, the plurality of measurement results include:

[0149] a first measurement result of the at least one TRS pair when the Doppler frequency shift is a first frequency shift;

[0150] a second measurement result of the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0151] In some embodiments, the second device measures at least one TRS pair when the Doppler frequency shift is a first frequency shift to obtain a first measurement result; and measures at least one TRS pair when the Doppler frequency shift is a second frequency shift to obtain a second measurement result.

[0152] It should be noted that during communication between a first device and a second device, the relative motion between the first and second devices causes a frequency offset between the transmit and receive frequencies. This difference is called the Doppler shift. The magnitude of the Doppler shift indicates the effect of the speed of movement on the time-domain variation of the channel.

[0153] It is worth noting that when the Doppler shift changes significantly, the time-domain channel characteristics of the downlink channel also change significantly, causing the measurement results of at least one TRS pair measured by the second device at different Doppler shifts to change. Therefore, the accuracy of the measurement results can be determined based on whether the changes between the multiple measurement results corresponding to different Doppler shifts reflect the changes in the Doppler shift.

[0154] Step S2102: The second device sends the first information.

[0155] In some embodiments, the second device sends the first information to the first device.

[0156] In some embodiments, the second device broadcasts, multicasts, or unicasts the first information to the first device.

[0157] In some embodiments, the first information is used to indicate a plurality of measurement results of at least one tracking reference signal (TRS) pair.

[0158] In some embodiments, the plurality of measurement results are used by the first device to determine whether the measurement accuracy of the second device passes a test.

[0159] In some embodiments, the measurement result includes at least one of the following:

[0160] Channel instantaneous correlation value;

[0161] The average value of the instantaneous correlation values ​​of multiple channels;

[0162] The median value of the instantaneous correlation values ​​of multiple channels.

[0163] Exemplarily, the second device may directly send the measured multiple channel instantaneous correlation values ​​of at least one TRS pair to the first device, and the first device determines the average or median value of the multiple channel instantaneous correlation values ​​based on the multiple channel instantaneous correlation values ​​of at least one TRS pair.

[0164] As another example, after the second device measures and obtains multiple channel instantaneous correlation values ​​of at least one TRS pair, it can determine the average value or median value of the multiple channel instantaneous correlation values ​​based on the multiple channel instantaneous correlation values ​​of at least one TRS pair; and send the average value or median value of the multiple channel instantaneous correlation values ​​to the first device.

[0165] In some embodiments, the first information includes: a first measurement result of measuring the at least one TRS pair when the Doppler frequency shift is a first frequency shift; and a second measurement result of measuring the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0166] In some embodiments, the difference between the first frequency shift and the second frequency shift is greater than the second value.

[0167] It should be noted that by limiting the difference between the first frequency shift and the second frequency shift to be greater than the second value, the measurement result of at least one TRS pair measured by the second device can reflect the change in Doppler shift, that is, the change from a low Doppler shift to a high Doppler shift. For example, the first frequency shift may be 10 Hz, and the second frequency shift may be 300 Hz.

[0168] Step S2103: The first device determines a difference value between a plurality of measurement results corresponding to different Doppler frequency shifts.

[0169] In some embodiments, the first device may be a test device used to test the measurement performance of the terminal. For example, the first device may be any device used to test the measurement accuracy of the second device.

[0170] In some embodiments, the first device may be a network device. For example, the first device may correspond to an access network device.

[0171] In some embodiments, the first device determines a difference between the first measurement and the second measurement.

[0172] In some embodiments, the difference value between the multiple measurement results is used to at least indicate a change in the time-domain channel characteristics of the downlink channel measured by the second device.

[0173] In some embodiments, the difference between the first measurement result and the second measurement result includes at least one of the following:

[0174] a first differential value, where the first differential value is a difference between an average value of a plurality of channel instantaneous correlation values ​​included in the first measurement result and an average value of a plurality of channel instantaneous correlation values ​​included in the second measurement result;

[0175] A second differential value, where the second differential value is a difference between a median value of a plurality of channel instantaneous correlation values ​​included in the first measurement result and a median value of a plurality of channel instantaneous correlation values ​​included in the second measurement result.

[0176] If the measurement result reported by the second device is the average value of multiple channel instantaneous correlation values ​​measured by at least one TRS pair under different Doppler frequency shifts, the first device can perform a difference on the average values ​​of the channel instantaneous correlation values ​​corresponding to the multiple Doppler frequency shifts to obtain a first differential value.

[0177] If the measurement result reported by the second device is multiple channel instantaneous correlation values ​​measured by at least one TRS pair under different Doppler frequency shifts, the first device can first determine the average value of the multiple channel instantaneous correlation values ​​corresponding to each Doppler frequency shift; then subtract the average values ​​of the channel instantaneous correlation values ​​corresponding to the multiple Doppler frequency shifts to obtain a first differential value.

[0178] If the measurement result reported by the second device is the median value of multiple channel instantaneous correlation values ​​measured by at least one TRS pair under different Doppler frequency shifts, the first device can subtract the median values ​​of the channel instantaneous correlation values ​​corresponding to the multiple Doppler frequency shifts to obtain a second differential value.

[0179] If the measurement result reported by the second device is multiple channel instantaneous correlation values ​​measured by at least one TRS pair under different Doppler frequency shifts, the first device can first determine the median value of the multiple channel instantaneous correlation values ​​corresponding to each Doppler frequency shift; then subtract the median values ​​of the channel instantaneous correlation values ​​corresponding to the multiple Doppler frequency shifts to obtain a second differential value.

[0180] Step S2104: The first device determines whether the measurement accuracy of the second device passes the test.

[0181] In some embodiments, the first device determines whether the measurement accuracy of the second device passes the test based on the difference values ​​between the multiple measurement results.

[0182] In some embodiments, the first device may determine whether the measurement accuracy of the second device passes the test based on whether the differential value is within the first range.

[0183] In some embodiments, the first device may determine the corresponding first range according to a plurality of Doppler frequency shifts corresponding to the plurality of measurement results.

[0184] In some embodiments, the first device may determine a plurality of Doppler frequency shifts corresponding to the plurality of measurement results according to the measurement parameter.

[0185] In some embodiments, the first device determines a plurality of Doppler frequency shifts corresponding to the plurality of measurement results according to measurement parameters configured by the first device for the second device.

[0186] In other embodiments, the first device determines multiple Doppler shifts corresponding to multiple measurement results based on measurement parameters or information indicating measurement parameters reported by the second device. For example, the second device may select the Doppler shift for measurement based on a protocol or independently. In this case, no prior configuration by the first device is required. Therefore, the second device sends both the measurement results and the measurement parameters to the first device.

[0187] In some embodiments, the first device may determine the corresponding first range according to the first frequency shift corresponding to the first measurement result and the second frequency shift corresponding to the second measurement result.

[0188] In some embodiments, one of the first frequency shift and the second frequency shift has a different Doppler shift, and the first range has a different range.

[0189] For example, the first range corresponding to when the Doppler frequency shift is 10 Hz and 300 Hz is different from the first range corresponding to when the Doppler frequency shift is 10 Hz and 200 Hz.

[0190] In some embodiments, the first device may store multiple first ranges, and after receiving the first information sent by the second device, may determine the corresponding first range according to the fifth indication in the first information.

[0191] It is understandable that the first device may pre-store multiple first ranges, each first range corresponds to two Doppler frequency shifts; and at least one of the two Doppler frequency shifts corresponding to different first ranges is different.

[0192] After receiving the first information sent by the second device, the first device may obtain a first range corresponding to the Doppler frequency shift of the plurality of measurement results from the stored plurality of first ranges; and determine the measurement accuracy of the second device based on the first range.

[0193] In some embodiments, the first range is determined based on a difference between measurement results of historical measurements under corresponding multiple Doppler shifts.

[0194] It is worth noting that the first device can determine the difference between multiple historical measurement results based on the measurement results of multiple historical measurements under multiple Doppler frequency shifts corresponding to the measurement results, and determine the first range of multiple Doppler frequency shifts corresponding to the measurement results according to the difference.

[0195] In some embodiments, the first range may be determined by a first threshold.

[0196] For example, if the difference value is greater than or equal to the first threshold, it can be considered that the measurement accuracy of the second device has passed the test.

[0197] In some embodiments, the first threshold is determined based on a difference between a plurality of measurement results of historical measurements at corresponding plurality of Doppler shift frequencies.

[0198] Exemplarily, the first threshold is determined based on a first difference between average values ​​of a plurality of channel instantaneous correlation values ​​historically measured under corresponding plurality of Doppler frequency shifts.

[0199] As another example, the first threshold is determined based on a second difference between median values ​​of a plurality of channel instantaneous correlation values ​​historically measured under corresponding plurality of Doppler frequency shifts.

[0200] In some embodiments, the first range may be determined by the sum of the first threshold and the margin.

[0201] For example, if the difference value is greater than or equal to the sum of the first threshold and the margin, it can be considered that the measurement accuracy of the second device has passed the test.

[0202] In some embodiments, the first range corresponding to the first differential value is different from the first range corresponding to the second differential value.

[0203] For example, the first range corresponding to the first difference value may be determined by a first threshold value determined based on the first difference value, and the first range corresponding to the second difference value may be determined by a first threshold value determined based on the second difference value; because the first threshold value determined by the first difference value and the first threshold value determined by the second difference value are different, the first range corresponding to the first difference value and the first range corresponding to the second difference value are different.

[0204] In some embodiments, determining whether the measurement accuracy of the second device passes the test based on whether the difference value is within the first range includes at least one of the following:

[0205] The difference value is within a first range, and it is determined that the measurement accuracy of the second device passes the test;

[0206] The difference value is outside the first range, and it is determined that the measurement accuracy of the second device fails the test.

[0207] Since the first range is determined based on the first threshold, if the differential value is greater than or equal to the first threshold, it indicates that the differential value is within the first range, and the second device can be determined to have passed the measurement accuracy test. If the differential value is less than the first threshold, it indicates that the differential value is outside the first range, and the second device can be determined to have failed the measurement accuracy test.

[0208] It is worth noting that step S2102 is optional. For example, the second device may not send the first information to the first device. Instead, the second device may determine the difference between the multiple measurement results corresponding to different Doppler shifts and then determine whether its own measurement accuracy passes the test based on the difference. For detailed descriptions of the steps for the second device to determine the difference between the multiple measurement results corresponding to different Doppler shifts and to determine whether it passes the test, refer to the corresponding steps performed by the first device.

[0209] FIG2B is an interactive diagram illustrating a measurement accuracy test method according to an exemplary embodiment. As shown in FIG2B , the embodiment of the present disclosure relates to a measurement accuracy test method for a communication system 100, the method comprising:

[0210] Step S2201: The second device performs multiple measurements on at least one TRS pair to obtain multiple measurement results.

[0211] In some embodiments, the optional implementation of step S2201 can refer to the optional implementation of step S2101 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0212] Step S2202: The second device sends the first information.

[0213] In some embodiments, the second device sends the first information to the first device.

[0214] In some embodiments, the second device broadcasts, multicasts, or unicasts the first information to the first device.

[0215] In some embodiments, the first information is used to indicate a plurality of measurement results of at least one tracking reference signal (TRS) pair.

[0216] In some embodiments, the plurality of measurement results are used by the first device to determine whether the measurement accuracy of the second device passes a test.

[0217] In some embodiments, the measurement result includes: a plurality of channel instantaneous correlation values ​​of at least one TRS pair; wherein one channel instantaneous correlation value corresponds to the correlation of the measurement values ​​of two TRSs in a TRS pair.

[0218] In some embodiments, the first information includes at least one of the following:

[0219] Measuring a first measurement result of the at least one TRS pair under a Doppler frequency shift of a first frequency shift;

[0220] A second measurement result of the at least one TRS pair is measured at a second Doppler frequency shift.

[0221] In some embodiments, the difference between the first frequency shift and the second frequency shift is greater than the second value.

[0222] It should be noted that by limiting the difference between the first frequency shift and the second frequency shift to be greater than the second value, the measurement result of at least one TRS pair measured by the second device can reflect the change in Doppler shift, that is, the change from a low Doppler shift to a high Doppler shift. For example, the first frequency shift may be 10 Hz, and the second frequency shift may be 300 Hz.

[0223] Step S2203: The first device determines the probability that the measurement values ​​in the plurality of measurement results are within the second range.

[0224] In some embodiments, the second range may be determined based on measuring a Doppler shift of the TRS pair.

[0225] In some embodiments, the second ranges corresponding to different Doppler frequency shifts are the same.

[0226] It is worth noting that the second ranges corresponding to different Doppler frequency shifts are the same, and the third ranges corresponding to different Doppler frequency shifts are different.

[0227] In some embodiments, the second range may be determined based on a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under any of the Doppler frequency shifts.

[0228] In some embodiments, the second range may be determined based on a channel instantaneous correlation value corresponding to a probability threshold in a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under any of the Doppler frequency shifts.

[0229] In some embodiments, the first device may determine a channel instantaneous correlation value corresponding to a probability threshold based on a cumulative distribution CDF curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift, and determine the channel instantaneous correlation value corresponding to the probability threshold as a first threshold value. The second range is determined by the first threshold value.

[0230] For example, if the measurement value reported by the second device is less than or equal to the first threshold value, it can be considered that the measurement value is within the second range.

[0231] In some embodiments, the probability threshold is less than or equal to the third value, for example, the probability threshold is less than or equal to 10%.

[0232] In some embodiments, the first device may determine a third range corresponding to different Doppler frequency shifts based on the second range.

[0233] In some embodiments, the third range may be determined based on a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift.

[0234] In some embodiments, the third range may be determined based on a probability threshold corresponding to the first threshold value in a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift.

[0235] Exemplarily, the first device may determine the channel instantaneous correlation value corresponding to the first probability threshold of the first frequency shift based on the CDF curve of the channel instantaneous correlation value historically measured under the first frequency shift; determine the channel instantaneous correlation value corresponding to the first probability threshold of the first frequency shift as the first threshold value; and determine the second probability threshold corresponding to the first threshold value based on the CDF curve of the channel instantaneous correlation value historically measured under the second frequency shift.

[0236] Thus, the second range corresponding to the first frequency shift and the second frequency shift is determined by the first threshold value; the third range corresponding to the first frequency shift is determined by the first probability threshold value, and the third range corresponding to the second frequency shift is determined by the second probability threshold value.

[0237] It is worth noting that, for different Doppler frequency shifts, the first device uses the second range determined by the same first threshold value when determining the probability that the measurement values ​​in the multiple measurement results corresponding to the multiple Doppler frequency shifts are within the second range.

[0238] In some embodiments, different Doppler frequency shifts correspond to different second ranges.

[0239] It is worth noting that the second ranges corresponding to different Doppler frequency shifts are the same, and the third ranges corresponding to different Doppler frequency shifts are the same.

[0240] In some embodiments, the second range corresponding to each Doppler frequency shift may be determined based on a channel instantaneous correlation value corresponding to a probability threshold in a CDF curve of historically measured channel instantaneous correlation values ​​under the corresponding Doppler frequency shift.

[0241] In some embodiments, the first device may determine a channel instantaneous correlation value corresponding to a probability threshold based on a CDF curve of historically measured channel instantaneous correlation values ​​under the corresponding Doppler frequency shift; and determine the channel instantaneous correlation value corresponding to the probability threshold as a second threshold value corresponding to the Doppler frequency shift. The second range corresponding to the Doppler frequency shift is determined by the second threshold value corresponding to the Doppler frequency shift.

[0242] For example, if the measurement value under any Doppler frequency shift reported by the second device is less than or equal to the second threshold value corresponding to the Doppler frequency shift, it can be considered that the measurement value is within the second range.

[0243] In some embodiments, the probability threshold is less than or equal to the third value, for example, the probability threshold is less than or equal to 10%.

[0244] In some embodiments, the third range corresponding to different Doppler frequency shifts may be determined by a probability threshold.

[0245] It is worth noting that, for different Doppler frequency shifts, when determining the probability that the measurement values ​​in the multiple measurement results corresponding to the multiple Doppler frequency shifts are within the second range, the first device respectively uses the second range determined by the second threshold value corresponding to the Doppler frequency shift.

[0246] In some embodiments, the first device determines a probability that a measurement value in the plurality of measurement results is within a second range, including:

[0247] Determine a first probability that the channel instantaneous correlation value included in the first measurement result is within a second range;

[0248] A second probability is determined that the instantaneous channel correlation value included in the second measurement result is within a second range.

[0249] Step S2204: The first device determines whether the measurement accuracy of the second device passes the test.

[0250] In some embodiments, the first device determines whether the measurement accuracy of the second device passes the test based on whether the probability that the measurement values ​​in the plurality of measurement results are within the second range is within a third range.

[0251] In some embodiments, the first device determines whether the measurement accuracy of the second device passes the test based on whether the probability that the measurement value in the plurality of measurement results is within the second range is within the third range, including:

[0252] The probability that the measurement values ​​in the plurality of measurement results are within the second range is within the third range, and determining that the measurement accuracy of the second device passes the test;

[0253] The probability that the measurement values ​​in the multiple measurement results are within the second range is outside the third range, and it is determined that the measurement accuracy of the second device has failed the test.

[0254] In some embodiments, the measurement accuracy of the second device is tested to meet at least one of the following requirements:

[0255] A first probability corresponding to the first measurement result is within a third range corresponding to the first frequency shift; the first probability is a probability that the instantaneous channel correlation value included in the first measurement result is less than or equal to the first threshold value;

[0256] The second probability corresponding to the second measurement result is within the third range corresponding to the second frequency shift; the second probability is the probability that the channel instantaneous correlation value included in the second measurement result is less than or equal to the first threshold value.

[0257] Here, the third range corresponding to the first frequency shift is different from the third range corresponding to the second frequency shift, and the first threshold value corresponding to the first frequency shift is the same as the first threshold value corresponding to the second frequency shift.

[0258] In other embodiments, the measurement accuracy of the second device must meet at least one of the following requirements:

[0259] A third probability corresponding to the first measurement result is within a third range; the third probability is a probability that the channel instantaneous correlation value included in the first measurement result is less than or equal to the second threshold value corresponding to the first frequency shift;

[0260] The fourth probability corresponding to the second measurement result is within the third range; the fourth probability is the probability that the channel instantaneous correlation value included in the first measurement result is less than or equal to the second threshold value corresponding to the second frequency shift.

[0261] Here, the second threshold value corresponding to the first frequency shift is different from the second threshold value corresponding to the second frequency shift, and the third range corresponding to the first frequency shift is the same as the third range corresponding to the second frequency shift.

[0262] It is worth noting that step S2202 is optional. For example, the second device may not send the first information to the first device. Instead, the second device may determine the probability that the measurement values ​​in the multiple measurement results are within the second range and then determine whether its own measurement accuracy passes the test based on the probability. For detailed descriptions of the steps for the second device to determine the probability that the measurement values ​​in the multiple measurement results are within the second range and to determine whether it passes the test, refer to the corresponding steps performed by the first device.

[0263] FIG3A is a flow chart of a measurement accuracy test method according to an exemplary embodiment. As shown in FIG3A , the embodiment of the present disclosure relates to a measurement accuracy test method, which is executed by a first device and includes:

[0264] Step S3101: Receive first information sent by the second device.

[0265] In some embodiments, the optional implementation of step S3101 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0266] Step S3102: Determine the difference between a plurality of measurement results corresponding to different Doppler shifts.

[0267] In some embodiments, the optional implementation of step S3102 can refer to the optional implementation of step S2103 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0268] Step S3103: Determine whether the measurement accuracy of the second device passes the test.

[0269] In some embodiments, the optional implementation of step S3103 can refer to the optional implementation of step S2104 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0270] FIG3B is a flow chart of a measurement accuracy test method according to an exemplary embodiment. As shown in FIG3B , the embodiment of the present disclosure relates to a measurement accuracy test method, which is executed by a first device and includes:

[0271] Step S3201: Receive first information sent by the second device.

[0272] In some embodiments, the optional implementation of step S3201 can refer to the optional implementation of step S2102 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0273] Step S3202: Determine the probability that the measurement values ​​in the plurality of measurement results are within the second range.

[0274] In some embodiments, the optional implementation of step S3202 can refer to the optional implementation of step S2103 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0275] Step S3203: Determine whether the measurement accuracy of the second device passes the test.

[0276] In some embodiments, the optional implementation of step S3203 can refer to the optional implementation of step S2104 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0277] FIG3C is a flow chart of a measurement accuracy test method according to an exemplary embodiment. As shown in FIG3C , the embodiment of the present disclosure relates to a measurement accuracy test method, which is performed by a first device and includes:

[0278] Step S3301: Receive first information sent by the second device.

[0279] In some embodiments, the first information indicates a plurality of measurement results of at least one tracking reference signal (TRS) pair by the second device.

[0280] Step S3302: Determine whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0281] In some embodiments, the measurement result includes at least one of the following:

[0282] Channel instantaneous correlation value;

[0283] The average value of the instantaneous correlation values ​​of multiple channels;

[0284] The median value of the instantaneous correlation values ​​of multiple channels;

[0285] Wherein, one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one TRS pair.

[0286] In some embodiments, the first information includes:

[0287] Measuring a first measurement result of the at least one TRS pair under a Doppler frequency shift of a first frequency shift;

[0288] A second measurement result of the at least one TRS pair is measured at a second Doppler frequency shift.

[0289] In some embodiments, determining whether the measurement accuracy of the second device passes the test based on the multiple measurement results includes:

[0290] determining a difference between the first measurement result and the second measurement result;

[0291] According to the difference value, it is determined whether the measurement accuracy of the second device passes the test.

[0292] In some embodiments, determining whether the measurement accuracy of the second device passes the test based on the difference value includes:

[0293] Whether the measurement accuracy of the second device passes the test is determined according to whether the difference value is within the first range.

[0294] In some embodiments, determining whether the measurement accuracy of the second device passes the test based on whether the differential value is within the first range includes at least one of the following:

[0295] The difference value is within a first range, and it is determined that the measurement accuracy of the second device passes the test;

[0296] The difference value is outside the first range, and it is determined that the measurement accuracy of the second device fails the test.

[0297] In some embodiments, one of the first frequency shift and the second frequency shift has a different Doppler shift, and the first range has a different range.

[0298] In some embodiments, the difference between the first measurement result and the second measurement result includes at least one of the following:

[0299] a first differential value, where the first differential value is a difference between an average value of a plurality of channel instantaneous correlation values ​​included in the first measurement result and an average value of a plurality of channel instantaneous correlation values ​​included in the second measurement result;

[0300] A second differential value, where the second differential value is a difference between a median value of a plurality of channel instantaneous correlation values ​​included in the first measurement result and a median value of a plurality of channel instantaneous correlation values ​​included in the second measurement result.

[0301] In some embodiments, the first range corresponding to the first differential value is different from the first range corresponding to the second differential value.

[0302] In some embodiments, determining whether the measurement accuracy of the second device passes the test based on the multiple measurement results includes:

[0303] determining a probability that a measurement value in the plurality of measurement results is within a second range;

[0304] According to whether the probability is within a third range, it is determined whether the measurement accuracy of the second device passes the test.

[0305] In some embodiments, the method further comprises:

[0306] The second range is determined according to the Doppler frequency shifts corresponding to the multiple measurement results; different Doppler frequency shifts correspond to different second ranges.

[0307] In some embodiments, the method further comprises:

[0308] The third range is determined according to the Doppler frequency shifts corresponding to the multiple measurement results, and different Doppler frequency shifts correspond to different third ranges.

[0309] In some embodiments, the third range is determined based on a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift.

[0310] In some embodiments, the signal-to-noise ratio corresponding to the measurement result is greater than or equal to a first value.

[0311] FIG4 is a flow chart of a measurement accuracy test method according to an exemplary embodiment. As shown in FIG4 , the embodiment of the present disclosure relates to a measurement accuracy test method, which is performed by a second device and includes:

[0312] Step S4101: perform multiple measurements on at least one TRS pair to obtain multiple measurement results.

[0313] In some embodiments, the optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0314] In some embodiments, the optional implementation of step S4101 can refer to the optional implementation of step S2201 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0315] Step S4102: Send the first message.

[0316] In some embodiments, the optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2A and other related parts of the embodiment involved in Figure 2A, which will not be repeated here.

[0317] In some embodiments, the optional implementation of step S4102 can refer to the optional implementation of step S2202 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.

[0318] In some embodiments, the measurement result includes at least one of the following:

[0319] Channel instantaneous correlation value;

[0320] The average value of the instantaneous correlation values ​​of multiple channels;

[0321] The median value of the instantaneous correlation values ​​of multiple channels;

[0322] Wherein, one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one TRS pair.

[0323] In some embodiments, the plurality of measurement results include at least one of the following:

[0324] a first measurement result of the at least one TRS pair when the Doppler frequency shift is a first frequency shift;

[0325] a second measurement result of the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0326] In some embodiments, the signal-to-noise ratio corresponding to the measurement result is greater than or equal to a first value.

[0327] The present disclosure also provides a method, which is performed by a terminal whose measurement accuracy has passed the test. The method includes:

[0328] Acquire third information; the third information includes at least one of the following: channel state information and terminal state information; determine whether the sending conditions of the TDCP report are met according to the third information; and perform a first operation according to whether the sending conditions of the TDCP report are met.

[0329] In some embodiments, the channel state information indicates the channel state and / or channel state change of the current channel of the terminal.

[0330] In some embodiments, the terminal status information indicates the current status of the terminal, exemplarily, the current motion status of the terminal and the current network coverage status of the terminal.

[0331] In some embodiments, determining whether a condition for sending a TDCP report is met according to the third information may include:

[0332] determining, based on the third information, whether the terminal is currently capable of generating a TDCP report that meets the requirements;

[0333] When a TDCP report meeting the requirements can be generated, determining that a condition for sending the TDCP report is met;

[0334] When a TDCP report meeting the requirements cannot be generated, it is determined that a condition for sending the TDCP report is not met.

[0335] Exemplarily, if the current channel state deteriorates severely or the terminal cannot obtain a communication service with a low bit error rate under the current channel state, it may be determined that the conditions for sending the TDCP report are not met.

[0336] As another example, if the terminal detects that the SNR is lower than a specified value, it may determine that the conditions for sending the TDCP report are not met.

[0337] In some embodiments, the condition configuration for determining whether the TDCP report transmission condition is met may be provided by a network device or agreed upon by a protocol.

[0338] In some embodiments, the terminal obtaining the third information by measuring accuracy through testing includes but is not limited to at least one of the following:

[0339] The terminal under test measures the accuracy of the measurement by measuring the reference signal sent by the network device to obtain the third information including the measurement value;

[0340] The terminal under test obtains third-party information based on the historical measurement results of TRS.

[0341] If the terminal under the measurement accuracy test detects that the duration of network connection interruption is greater than or equal to the specified duration, the terminal generates third information indicating that the TDCP report sending condition is not met.

[0342] The measurement values ​​include, but are not limited to, the reference signal received power, reference signal received quality, and / or signal to interference and noise ratio of the following reference signals; TRS; Channel State Information-Reference Signal (CSI-RS); Synchronization Signal and Physical Broadcaset Channel block (SSB).

[0343] For example, if the measurement value is less than or equal to a specified threshold, third information indicating that the TDCP report sending condition is not met is obtained.

[0344] In some embodiments, performing the first operation according to whether the TDCP report sending condition is met may include at least one of the following:

[0345] If the TDCP report sending conditions are met, a TDCP report is sent to the network device;

[0346] If the conditions for sending TDCP reports are not met, the sending of TDCP reports to the network device is stopped;

[0347] The fourth information is sent to the network device according to whether the TDCP report sending condition is met.

[0348] In some embodiments, the fourth information is used to indicate whether the network device is capable of receiving the TDCP report of the terminal or reconfiguring the measurement configuration corresponding to the TDCP report.

[0349] In some embodiments, the fourth information is used to indicate at least one of the following:

[0350] Whether the terminal will send TDCP reports;

[0351] Whether the accuracy of the TDCP report sent by the terminal meets the requirements;

[0352] The time domain location at which the terminal can send TDCP reports;

[0353] Whether the network device needs to reconfigure the measurement configuration corresponding to the TDCP report.

[0354] When the conditions for sending TDCP reports are not met, the terminal stops sending TDCP reports or adjusts the time domain position of TDCP reports to reduce unnecessary TDCP report transmission, thereby reducing the amount of data transmitted between the terminal and the network device. By sending the fourth information, the network device can easily know whether the terminal will report TDCP reports and adaptively adjust the base station behavior, such as reducing the waiting time for receiving TDCP reports.

[0355] The present disclosure also provides a method, which is performed by a network device, comprising:

[0356] A conditional configuration is sent to the terminal whose measurement accuracy passes the test.

[0357] In some embodiments, the condition configuration may be used by a terminal undergoing a measurement accuracy test to determine whether a condition for sending a TDCP report is met.

[0358] The sending condition of the TDCP report can be found in the above embodiment and will not be repeated here.

[0359] The embodiment of the present disclosure also provides a method, which is executed by a network device and may include: receiving fourth information sent by a terminal whose measurement accuracy is being tested.

[0360] In some embodiments, the fourth information is used to indicate whether the network device is capable of receiving the TDCP report of the terminal or reconfiguring the measurement configuration corresponding to the TDCP report.

[0361] In some embodiments, the fourth information is used to indicate at least one of the following: whether the terminal will send a TDCP report; whether the accuracy of the TDCP report sent by the terminal meets the requirements; the time domain location at which the terminal can send the TDCP report; whether the network device needs to reconfigure the measurement configuration corresponding to the TDCP report.

[0362] In some embodiments, before receiving the fourth information, the method may further include: sending a conditional configuration to the terminal whose measurement accuracy passes the test.

[0363] In some embodiments, the condition configuration may be used for the terminal whose measurement accuracy passes the test to determine whether the condition for sending the TDCP report is met. Exemplarily, if the condition for sending the TDCP report is agreed upon by the protocol, this step is optional.

[0364] FIG5 is an interactive diagram illustrating a measurement accuracy test method according to an exemplary embodiment. As shown in FIG5 , the embodiment of the present disclosure relates to a measurement accuracy test method for a communication system 100, and the method includes one of the following steps:

[0365] Step S5101: The second device performs multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results.

[0366] Step S5102: The second device sends first information to the first device.

[0367] In some embodiments, the first information indicates a plurality of measurement results of the at least one TRS pair.

[0368] Step S5103: The first device determines whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0369] In some embodiments, the above method may include the methods of the above embodiments on the communication system side, the first device side, the second device side, etc., which will not be repeated here.

[0370] TRS-based time-domain channel attribute reporting provides access network devices with information about channel variability. Before sending TDCP reports, terminals must perform TRS measurements and perform evaluation calculations based on these TRS measurements to generate measurement results. This incurs significant workload for the terminal.

[0371] In some cases, the TDL-A model can be used to verify the terminal's channel measurement results. The accuracy test of TDCP reports can take advantage of the fact that the correlation value varies with Doppler shift.

[0372] In some embodiments, the accuracy test for TDCP reports aims to verify that the estimated correlation value changes with Doppler shifts. Therefore, there's no need to compare the estimated correlation value with the ideal correlation value. Instead, the difference between the two estimated correlation values ​​at two Doppler shifts should be of interest. For example, when the Doppler shift changes from 10 Hz to 300 Hz, the correlation value reported by the UE will change.

[0373] When the low Doppler shift frequency changes to a high Doppler shift frequency, the following two optional methods can be used to determine whether the accuracy of the measurement value reported by the UE passes the test:

[0374] Option 1: Based on the difference between the average or median values ​​of the estimated correlation values ​​under two Doppler frequency shifts;

[0375] Option 2: Estimating the statistical distribution of correlation values ​​under Doppler frequency shift.

[0376] For option 1:

[0377] As shown in Table 1, Table 1 provides average values ​​and median values ​​of estimated correlation values ​​under different Doppler frequency shifts; wherein, the signal-to-noise ratio (SNR) when obtaining the estimated correlation values ​​is 15 dB.

[0378] Table 1 shows the mean and median values ​​of the estimated correlation values ​​for different Doppler frequency shifts when the SNR is 15 dB.

[0379] Table 1

[0380] As can be seen from Table 1, for 10Hz and 300Hz:

[0381] The difference between the average values ​​of the estimated correlation values ​​under the two Doppler frequency shifts is about 0.21; the difference between the median values ​​of the estimated correlation values ​​under the two Doppler frequency shifts is about 0.17.

[0382] For 10Hz and 200Hz:

[0383] The difference between the average values ​​of the estimated correlation values ​​under two Doppler frequency shifts is approximately 0.15; the difference between the median values ​​of the estimated correlation values ​​under two Doppler frequency shifts is approximately 0.1.

[0384] It is worth noting that the difference between the estimated correlation value when the Doppler shift is 10 Hz and the estimated correlation value when the Doppler shift is 300 Hz is more obvious.

[0385] In view of this, the difference between the estimated correlation value corresponding to the low Doppler frequency shift and the estimated correlation value corresponding to the high Doppler frequency shift can be determined as the threshold of the accuracy test.

[0386] For example, the threshold value of the accuracy test may be 0.21, i.e., the difference between the mean values ​​of the estimated correlation values ​​corresponding to 10 Hz and 300 Hz. Alternatively, the threshold value of the accuracy test may be 0.17, i.e., the difference between the median values ​​of the estimated correlation values ​​corresponding to 10 Hz and 300 Hz.

[0387] In other embodiments, the threshold of the accuracy test may be determined according to the sum of the difference value and the margin.

[0388] For example, the threshold of the accuracy test may be 0.21+X, where X is the margin.

[0389] The steps of determining whether the accuracy of the measurement value reported by the UE passes the test include:

[0390] During a period from T1 to T2, when the Doppler shift is 10 Hz, the UE measures at least one TRS pair to obtain multiple first measurement results, and reports the multiple first measurement results to the network device;

[0391] From time T2 to T3, when the Doppler shift is 300 Hz, the UE measures at least one TRS pair to obtain multiple second measurement results, and reports the multiple second measurement results to the network device;

[0392] The network device may determine a difference between the first measurement result and the second measurement result based on an average value of the plurality of first measurement results and an average value of the plurality of second measurement results; and compare the difference with a threshold value of the accuracy test. If the difference is greater than the threshold value of the accuracy test, it indicates that the accuracy of the measurement value reported by the UE has passed the test.

[0393] Alternatively, the network device may determine a differential value between the first measurement result and the second measurement result based on the median value of multiple first measurement results and the median value of multiple second measurement results; compare the differential value with a threshold value of the accuracy test; if the differential value is greater than the threshold value of the accuracy test, it indicates that the accuracy of the measurement value reported by the UE passes the test.

[0394] For option 2:

[0395] FIG6A is a schematic diagram showing a PDF of estimated correlation values ​​of historical measurements at two different Doppler frequency shifts when an SNR is 15 dB according to an exemplary embodiment, wherein the two Doppler frequency shifts are 10 Hz and 300 Hz, respectively.

[0396] As can be seen from FIG6A , the probability density distributions corresponding to the two Doppler frequency shifts partially overlap, but a threshold can be set to distinguish the estimated correlation values ​​corresponding to the two Doppler frequency shifts.

[0397] First, the same threshold can be set for different Doppler shifts. Specifically:

[0398] The threshold setting should meet the following conditions:

[0399] For the case of low Doppler frequency shift, the probability that the estimated correlation value in the multiple measurement results reported by the UE is less than the threshold should meet 5% or 10%; in other words, the probability that the estimated correlation value in the multiple measurement results reported by the UE is greater than or equal to the threshold should meet 95% or 90%.

[0400] In the case of high Doppler frequency shift, the probability that the estimated correlation value among the multiple measurement results reported by the UE is less than the threshold should satisfy x%.

[0401] The threshold determination process may include: the network device may draw a CDF curve corresponding to low Doppler frequency shift based on historical measurement results under low Doppler frequency shift; draw a CDF curve corresponding to high Doppler frequency shift based on historical measurement results under high Doppler frequency shift; based on the CDF curve corresponding to low Doppler frequency shift, determine a point with a cumulative distribution probability of 5% or 10%; and set the estimated correlation value corresponding to the point as the threshold.

[0402] According to the CDF curve corresponding to the high Doppler shift, a point in the CDF curve corresponding to the high Doppler shift with an estimated correlation value being a threshold is determined; and the cumulative distribution probability x% corresponding to the point is set as the probability threshold corresponding to the high Doppler shift.

[0403] Based on this, the steps of determining whether the accuracy of the measurement value reported by the UE passes the test include:

[0404] From time T1 to T2, when the Doppler frequency shift is 10 Hz, the network determines whether the probability that the multiple estimated correlation values ​​reported by the UE are less than the threshold is less than 5%. If it is less than 5%, it indicates that the accuracy of the measurement value reported by the UE passes the test.

[0405] From time T2 to T3, when the Doppler shift is 300 Hz, the network determines whether the probability that the multiple estimated correlation values ​​reported by the UE are less than the threshold is less than x%. If so, the accuracy of the measurement values ​​reported by the UE passes the test.

[0406] For example, when the Doppler shift is 10 Hz, the threshold corresponding to the Doppler shift of 10 Hz may be set to satisfy: the probability that the estimated correlation value in the multiple measurement results reported by the UE is less than the threshold is less than 5%.

[0407] As shown in FIG6B , FIG6B is a schematic diagram showing CDFs of estimated correlation values ​​of historical measurements at two different Doppler frequency shifts when an SNR is 15 dB according to an exemplary embodiment, wherein the two Doppler frequency shifts are 10 Hz and 300 Hz, respectively.

[0408] As shown in Figure 6B, in the CDF curve for a Doppler shift of 10 Hz, the cumulative distribution probability corresponding to point A is 5%, and the corresponding estimated correlation value is 0.83. This indicates that when the Doppler shift is 10 Hz, the probability that the estimated correlation value in multiple historical measurement results reported by the UE is less than 0.83 should be 5%. Based on this, the threshold corresponding to a Doppler shift of 10 Hz can be set to 0.83.

[0409] In this way, the network device can determine whether the accuracy of the measurement value reported by the UE passes the test based on whether the probability that the correlation value is less than 0.83 in multiple measurement results reported by the UE when the Doppler shift is 10 Hz is 5%.

[0410] In the CDF curve for a Doppler shift of 300 Hz, point B corresponds to a cumulative distribution probability of 60%, and the corresponding estimated correlation value is 0.83. This indicates that when the Doppler shift is 300 Hz, the probability that the estimated correlation value in the multiple historical measurement results reported by the UE is less than 0.83 should be 60%. Based on this, the threshold corresponding to a Doppler shift of 300 Hz can be set to 0.83.

[0411] In this way, the network device can determine whether the accuracy of the measurement value reported by the UE passes the test based on whether the probability that the estimated correlation value is less than 0.83 in multiple measurement results reported by the UE when the Doppler shift is 300 Hz is 60%.

[0412] Second, different thresholds can be set for different Doppler shifts. Specifically:

[0413] The setting of the threshold should meet the following conditions: for the case of low Doppler frequency shift, the probability that the estimated correlation value in the multiple measurement results reported by the UE is less than the first threshold should meet 5% or 10%; in other words, the probability that the estimated correlation value in the multiple measurement results reported by the UE is greater than or equal to the first threshold should meet 95% or 90%.

[0414] In the case of high Doppler frequency shift, the probability that the estimated correlation value in the multiple measurement results reported by the UE is less than the second threshold should meet 5% or 10%.

[0415] The threshold determination process may include: the network device may draw a CDF curve corresponding to low Doppler frequency shift based on historical measurement results under low Doppler frequency shift; draw a CDF curve corresponding to high Doppler frequency shift based on historical measurement results under high Doppler frequency shift; based on the CDF curve corresponding to low Doppler frequency shift, determine a point with a cumulative distribution probability of 5% or 10%; and set the estimated correlation value corresponding to the point as the first threshold.

[0416] According to the CDF curve corresponding to the high Doppler frequency shift, a point where the cumulative distribution probability is 5% or 10% is determined; and the estimated correlation value corresponding to the point is set as the second threshold.

[0417] It is worth noting that the SNR when the UE obtains the estimated correlation value should be greater than or equal to 15dB.

[0418] As shown in Figures 6C and 6D, Figure 6C is a schematic diagram illustrating a PDF of estimated correlation values ​​from historical measurements at two different Doppler shift frequencies when an SNR of 5 dB is provided, according to an exemplary embodiment. Figure 6D is a schematic diagram illustrating a CDF of estimated correlation values ​​from historical measurements at two different Doppler shift frequencies when an SNR of 5 dB is provided, according to an exemplary embodiment. The two Doppler shift frequencies are 10 Hz and 300 Hz, respectively.

[0419] As shown in Figure 6C, the probability density distributions corresponding to the two Doppler frequency shifts have a large overlapping area. As shown in Figure 6D, when the estimated correlation value is 0.3, the cumulative distribution probability corresponding to a Doppler frequency shift of 10 Hz is 5%; and the cumulative distribution probability corresponding to a Doppler frequency shift of 300 Hz is 18%.

[0420] It's worth noting that in this case, the probability that multiple estimated correlation values ​​reported by the UE are less than the threshold when the Doppler shift is 300 Hz is only 18%. This probability is so low that it's difficult to distinguish between the two estimated correlation values ​​corresponding to the Doppler shift using the threshold. Therefore, the SNR when the UE measures at least one TRS pair should be greater than or equal to 15 dB to ensure that the network equipment can determine whether the UE's reported measurement values ​​pass the test based on the multiple measurement values ​​reported by the UE.

[0421] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0422] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0423] The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device or a core network device) in any of the above methods.

[0424] It should be understood that the division of the various units or modules in the above devices is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above devices, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0425] In the embodiments of the present disclosure, a processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0426] Figure 7A is a structural diagram of a first device according to an exemplary embodiment. As shown in Figure 7A, the first device includes: a receiving module 701, configured to receive first information sent by a second device, wherein the first information indicates multiple measurement results of the second device on at least one tracking reference signal TRS pair; and a processing module 702, configured to determine whether the measurement accuracy of the second device passes the test based on the multiple measurement results.

[0427] It is worth noting that the receiving module 701 of the first device can perform any steps related to information reception in the measurement accuracy testing method performed by the first device. The processing module 702 can be used for any steps related to information processing in the measurement accuracy testing method performed by the first device.

[0428] In some embodiments, the first device further includes a sending module, which can be used to perform any step related to sending in the measurement accuracy test method executed by the terminal.

[0429] In some embodiments, the measurement result includes at least one of the following: a channel instantaneous correlation value; an average value of multiple channel instantaneous correlation values; a median value of multiple channel instantaneous correlation values; wherein one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one of the TRS pairs.

[0430] In some embodiments, the first information includes: a first measurement result of measuring the at least one TRS pair when the Doppler frequency shift is a first frequency shift; and a second measurement result of measuring the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0431] In some embodiments, the processing module 702 is further configured to: determine a difference between the first measurement result and the second measurement result; and determine whether the measurement accuracy of the second device passes the test based on the difference.

[0432] In some embodiments, the processing module 702 is further configured to: determine whether the measurement accuracy of the second device passes the test according to whether the differential value is within the first range.

[0433] In some embodiments, the processing module 702 is further configured to perform at least one of the following: if the differential value is within the first range, determining that the measurement accuracy of the second device passes the test; if the differential value is outside the first range, determining that the measurement accuracy of the second device fails the test.

[0434] In some embodiments, one of the first frequency shift and the second frequency shift has a different Doppler shift, and the first range has a different range.

[0435] In some embodiments, the differential value between the first measurement result and the second measurement result includes at least one of the following: a first differential value, the first differential value being the difference between an average value of multiple channel instantaneous correlation values ​​contained in the first measurement result and an average value of multiple channel instantaneous correlation values ​​contained in the second measurement result; a second differential value, the second differential value being the difference between a median value of multiple channel instantaneous correlation values ​​contained in the first measurement result and a median value of multiple channel instantaneous correlation values ​​contained in the second measurement result.

[0436] In some embodiments, the first range corresponding to the first differential value is different from the first range corresponding to the second differential value.

[0437] In some embodiments, the processing module 702 is further configured to: determine a probability that a measurement value in the plurality of measurement results is within a second range; and determine whether the measurement accuracy of the second device passes the test based on whether the probability is within a third range.

[0438] In some embodiments, the processing module 702 is further configured to: determine the second range according to the Doppler frequency shifts corresponding to the multiple measurement results; different Doppler frequency shifts correspond to different second ranges.

[0439] In some embodiments, the processing module 702 is further configured to: determine the third range according to the Doppler frequency shifts corresponding to the multiple measurement results, and different Doppler frequency shifts correspond to different third ranges.

[0440] In some embodiments, the third range is determined based on a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift.

[0441] In some embodiments, the signal-to-noise ratio corresponding to the measurement result is greater than or equal to a first value.

[0442] Figure 7B is a structural diagram of a second device according to an exemplary embodiment; as shown in Figure 7B, the second device includes: a processing module 711, configured to perform multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; a sending module 712, configured to send first information to the first device, wherein the first information indicates multiple measurement results of the at least one TRS pair; the multiple measurement results are used to determine whether the measurement accuracy of the second device passes the test.

[0443] It is worth noting that the processing module 711 of the second device can execute any steps related to information processing in the measurement accuracy test method executed by the second device. The sending module 712 can be used to execute any steps related to sending in the measurement accuracy test method executed by the second device.

[0444] In some embodiments, the measurement result includes at least one of the following: a channel instantaneous correlation value; an average value of multiple channel instantaneous correlation values; a median value of multiple channel instantaneous correlation values; wherein one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one of the TRS pairs.

[0445] In some embodiments, the multiple measurement results include at least one of the following: a first measurement result of the at least one TRS pair when the Doppler frequency shift is a first frequency shift; a second measurement result of the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

[0446] In some embodiments, the signal-to-noise ratio corresponding to the measurement result is greater than or equal to a first value.

[0447] An embodiment of the present disclosure further provides a communication device, which may include: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the measurement accuracy test method that can be implemented in any of the aforementioned embodiments.

[0448] 8A is a schematic diagram of the structure of a communication device 8100 provided in an embodiment of the present disclosure. The communication device 8100 also includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0449] The communication device may be the aforementioned terminal and network device. In some embodiments, the network device may be a master node and / or an auxiliary node.

[0450] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the communication steps such as sending and receiving in the above method are performed by the transceiver 8103, and the other steps are performed by the processor 8101.

[0451] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0452] Optionally, the communication device 8100 further includes one or more interface circuits 8104, which are connected to the memory 8102. The interface circuits 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuits 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0453] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0454] FIG8B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0455] The chip 8200 includes one or more processors 8201 , and the processor 8201 is used to call instructions to enable the chip 8200 to execute any of the above measurement accuracy testing methods.

[0456] In some embodiments, chip 8200 further includes one or more interface circuits 8202, which are connected to memory 8203. Interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and can be used to send signals to memory 8203 or other devices. For example, interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0457] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0458] The present disclosure also provides a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but may also be a transient storage medium.

[0459] The present disclosure further provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any one of the above measurement accuracy testing methods. Optionally, the program product is a computer program product.

[0460] The present disclosure also provides a computer program, which, when executed on a computer, enables the computer to execute any one of the above measurement accuracy testing methods.

[0461] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0462] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A measurement accuracy test method, wherein: Executed by a first device, the method includes: receiving first information sent by a second device, where the first information indicates a plurality of measurement results of the second device on at least one tracking reference signal TRS pair; According to the plurality of measurement results, it is determined whether the measurement accuracy of the second device passes the test.

2. The method according to claim 1, wherein: The measurement result includes at least one of the following: Channel instantaneous correlation value; The average value of the instantaneous correlation values ​​of multiple channels; The median value of the instantaneous correlation values ​​of multiple channels; Among them, one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one of the TRS pairs.

3. The method according to claim 1 or 2, wherein: The first information includes: Measuring a first measurement result of the at least one TRS pair at a Doppler frequency shift of a first frequency shift; A second measurement result of the at least one TRS pair is measured at a second Doppler frequency shift.

4. The method according to claim 3, wherein: The step of determining, according to the plurality of measurement results, whether the measurement accuracy of the second device passes the test comprises: determining a difference between the first measurement result and the second measurement result; According to the difference value, it is determined whether the measurement accuracy of the second device passes the test.

5. The method according to claim 4, wherein: The step of determining, according to the differential value, whether the measurement accuracy of the second device passes the test comprises: Whether the measurement accuracy of the second device passes the test is determined according to whether the difference value is within the first range.

6. The method according to claim 5, wherein: The step of determining whether the measurement accuracy of the second device passes the test according to whether the differential value is within the first range comprises at least one of the following: The difference value is within a first range, and it is determined that the measurement accuracy of the second device passes the test; The difference value is outside the first range, and it is determined that the measurement accuracy of the second device has failed the test.

7. The method according to claim 5 or 6, wherein: One Doppler shift in the first frequency shift and the second frequency shift is different, and the first range is different.

8. The method according to any one of claims 4 to 7, wherein: The difference between the first measurement result and the second measurement result includes at least one of the following: a first differential value, where the first differential value is a difference between an average value of a plurality of channel instantaneous correlation values ​​included in the first measurement result and an average value of a plurality of channel instantaneous correlation values ​​included in the second measurement result; A second differential value, where the second differential value is a difference between a median value of a plurality of channel instantaneous correlation values ​​included in the first measurement result and a median value of a plurality of channel instantaneous correlation values ​​included in the second measurement result.

9. The method according to claim 8, wherein: A first range corresponding to the first differential value is different from a first range corresponding to the second differential value.

10. The method according to claim 1, wherein: The step of determining, according to the plurality of measurement results, whether the measurement accuracy of the second device passes the test comprises: determining a probability that a measurement value in the plurality of measurement results is within a second range; According to whether the probability is within a third range, it is determined whether the measurement accuracy of the second device passes the test.

11. The method according to claim 10, wherein: The method further comprises: The second range is determined according to the Doppler frequency shifts corresponding to the multiple measurement results; different Doppler frequency shifts correspond to different second ranges.

12. The method according to claim 10 or 11, wherein: The method further comprises: The third range is determined according to the Doppler frequency shifts corresponding to the multiple measurement results, and the third ranges corresponding to different Doppler frequency shifts are different.

13. The method according to claim 12, wherein: The third range is determined based on a cumulative distribution curve of channel instantaneous correlation values ​​historically measured under the corresponding Doppler frequency shift.

14. The method according to any one of claims 1 to 13, wherein: The signal-to-noise ratio corresponding to the measurement result is greater than or equal to the first value.

15. A measurement accuracy test method, wherein: Executed by a second device, the method includes: The second device performs multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; Sending first information to a first device, wherein the first information indicates a plurality of measurement results of the at least one TRS pair; The measurement result is used to determine whether the measurement accuracy of the second device passes the test.

16. The method according to claim 15, wherein: The measurement result includes at least one of the following: Channel instantaneous correlation value; The average value of the instantaneous correlation values ​​of multiple channels; The median value of the instantaneous correlation values ​​of multiple channels; Among them, one of the channel instantaneous correlation values ​​corresponds to the correlation of the measurement values ​​of two TRSs in one of the TRS pairs.

17. The method according to claim 15 or 16, wherein: The multiple measurement results include at least one of the following: a first measurement result of the at least one TRS pair when the Doppler frequency shift is a first frequency shift; A second measurement result of the at least one TRS pair when the Doppler frequency shift is a second frequency shift.

18. The method according to any one of claims 15 to 17, wherein: The signal-to-noise ratio corresponding to the measurement result is greater than or equal to the first value.

19. A first device, wherein: include: A receiving module, configured to receive first information sent by a second device, where the first information indicates a plurality of measurement results of the second device on at least one tracking reference signal TRS pair; The processing module is configured to determine whether the measurement accuracy of the second device passes the test according to the multiple measurement results.

20. A second device, wherein: include: A processing module is configured to perform multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; The sending module is configured to send first information to the first device, where the first information indicates multiple measurement results of the at least one TRS pair; the multiple measurement results are used to determine whether the measurement accuracy of the second device passes the test.

21. A communication device, wherein: The communication device comprises: one or more processors; The processor is used to call instructions to enable the communication device to execute the measurement accuracy test method according to any one of claims 1 to 14 and / or claims 15 to 18.

22. A measurement accuracy test method, wherein: include: The second device performs multiple measurements on at least one tracking reference signal TRS pair to obtain multiple measurement results; The second device sends first information to the first device, where the first information indicates a plurality of measurement results of the at least one TRS pair; The first device determines whether the measurement accuracy of the second device passes the test according to the multiple measurement results.

23. A communication system, wherein: include: A first device, configured to perform the measurement accuracy test method according to any one of claims 1 to 14; The second device is used to perform the measurement accuracy test method described in any one of 15 to 18.

24. A storage medium, wherein: The storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the measurement accuracy test method according to any one of claims 1 to 14 and / or claims 15 to 18.

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