Wireless communication method, wireless communication device and computer readable medium

Abstract

Disclosed are a wireless communication method, a wireless communication apparatus, and a computer readable medium, and more particularly, methods, systems, and apparatuses related to techniques related to reporting Minimization of Drive Tests (MDT) measurements are disclosed. In one exemplary embodiment, a method for wireless communication includes receiving, from a core network node, a configuration for reducing drive test overhead and receiving, from a terminal, state information indicating a state of the terminal. The method may also include determining a state of the terminal based on state information indicating the state of the terminal. The method may also include sending a measurement report to the network node, the measurement report including state information indicating a state of the terminal.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "2019800986219", application date "July 25, 2019", and title "Reporting Measurements for Minimizing Drive Tests in Wireless Communications". Technical Field

[0002] This patent application relates generally to wireless communications. Background Art

[0003] Mobile communication technologies are driving the world towards an increasingly connected and networked society. The rapid growth of mobile communications and technological advances have led to greater demands for capacity and connectivity. Other aspects such as energy consumption, equipment cost, spectrum efficiency and latency are also important to meet the needs of various communication scenarios. Various technologies are being discussed, including new ways to provide higher quality of service. Summary of the invention

[0004] The present application discloses methods, systems and devices related to digital wireless communications, and more particularly, discloses methods, systems and devices related to technologies related to reporting minimization of drive test (MDT) measurements.

[0005] In an exemplary embodiment, a method for wireless communication includes: receiving a configuration for reducing a path test overhead from a core network node and receiving status information indicating a terminal status from a terminal. The method may also include: determining a status of the terminal based on the status information indicating the terminal status. The method may also include: sending a measurement report to a network node, the measurement report including the status information indicating the terminal status.

[0006] In another exemplary embodiment, a method for wireless communication may include: receiving, by a terminal, a configuration for minimization of drive tests (MDT) from a communication node. The method may also include: determining, by the terminal, that the terminal is in a specific state, wherein the terminal is configured not to perform any measurements when in the specific state, or to send any measurements recorded by the terminal in the specific state together with an indication that the terminal is in the specific state to the communication node.

[0007] In another exemplary embodiment, a method for wireless communication includes: receiving, by a terminal, a log-based MDT configuration for reducing drive test overhead from a communication node. The method may also include: performing, by the terminal, measurements in an idle or inactive state based on the configuration for reducing drive test overhead. The method may also include: recording, by the terminal, all measurement records performed by the terminal in a normal state. The method may also include: sending, by the terminal, the measurement records to a base station.

[0008] In another exemplary embodiment, a method for wireless communication includes: receiving, by a communication node, a log-based MDT configuration for reducing drive test overhead from a network node. The method also includes: sending, by the communication node, a log-based MDT configuration for reducing drive test overhead to a first terminal and a second terminal, wherein the first terminal and the second terminal are configured to perform measurements in an idle or inactive state and record any measurement logs when each of the first terminal and the second terminal is in a normal state. The method also includes: receiving, by the communication node, measurement logs recorded by the first terminal and the second terminal.

[0009] In another exemplary aspect, a method for wireless communication includes: receiving, by a terminal, a log-based MDT configuration for reducing route test overhead from a base station, the log-based MDT configuration including an interval configured for periodic out-of-coverage measurements, wherein the interval configured for the periodic out-of-coverage measurements is different from the interval configured for the log-based MDT configuration. The method also includes: when the terminal enters a state of staying in any cell selection, performing, by the terminal, periodic out-of-coverage measurements, and recording the periodic out-of-coverage measurements at each time instance identified by the interval configured for the periodic out-of-coverage measurements. The method also includes: sending, by the terminal, to the base station, a record of the periodic out-of-coverage measurements recorded by the terminal.

[0010] In another exemplary aspect, a wireless communication device including a processor is disclosed. The processor is configured to implement the methods described herein.

[0011] In yet another exemplary aspect, the various techniques described herein may be embodied as processor-executable code and stored on a computer-readable program medium.

[0012] Some embodiments may preferably implement the following solutions.

[0013] 1. A solution for wireless communication, comprising: receiving, by a communication node, a configuration for reducing a path test overhead from a core network node, and receiving, by a communication node, status information indicating a terminal status from a terminal; determining, by the communication node, a status of the terminal based on the status information; and sending, by the communication node, a measurement report to a network node, the measurement report including the status information indicating the terminal status.

[0014] 2. The solution according to claim 1, wherein the measurement report comprises measurements performed by any one of the terminal or the communication node.

[0015] 3. The solution of claim 1, wherein the configuration for reducing the drive test overhead indicates a first set of measurements and / or a second set of measurements, the first set of measurements to be performed by the communication node, the second set of measurements to be performed by the terminal or any one of the communication nodes communicating with the terminal, wherein the configuration for reducing the drive test overhead comprises a minimization of drive test (MDT) configuration.

[0016] 4. The solution according to claim 3 further includes: receiving, by the communication node, a second set of measurements performed by the terminal and information indicating an update status of the terminal; and forwarding, by the communication node, the second set of measurements and the information indicating the update status of the terminal to the network node, wherein the network node is configured to: perform statistical processing of the second set of measurements based on identifying that the information indicating the update status of the terminal indicates that the terminal is in a specific state.

[0017] 5. The solution according to claim 3, further comprising: forwarding, by the communication node, the received configuration to the terminal, wherein the terminal is configured to perform a second set of measurements based on the configuration.

[0018] 6. The solution according to claim 1 further comprises: receiving, by the communication node, a terminal status report from the terminal indicating that the terminal is in a specific state, wherein the terminal status report is sent based on a trigger of a state change of the terminal or an occurrence of a periodic reporting time instance.

[0019] 7. The solution according to claim 3, further comprising: sending a configuration partial success message by the communication node to the core network node, the configuration partial success message indicating that the first set of measurements can be performed by the communication node, while the second set of measurements cannot be performed by the terminal.

[0020] 8. The solution according to claim 1, further comprising: the communication node sending a configuration failure message to the core network node based on determining that the terminal is in a specific state, the configuration failure message indicating that the terminal cannot perform any measurement.

[0021] 9. The solution of claim 9, further comprising: receiving, by the communication node, an additional configuration including the first set of measurements for the terminal; and performing, by the communication node, the first set of measurements according to the additional configuration.

[0022] 10. The solution according to claim 1 further includes: sending a specific state message indicating that the terminal is in a specific state by the communication node to the core network node; receiving a deactivation message by the communication node from the core network node, the deactivation message including information for deactivating measurement by the terminal; and forwarding the deactivation message by the communication node to the terminal, wherein the terminal is configured to deactivate measurement based on receiving the deactivation message.

[0023] 11. The solution according to claim 3 further includes: the communication node sending a specific state message indicating that the terminal is in a specific state to the core network node; based on the core network node determining that the terminal is in the specific state, the communication node receiving a configuration that does not include measurements that the terminal cannot perform; and the communication node forwarding the configuration to the terminal.

[0024] 12. The solution according to claim 1 further includes: the communication node sending a specific state message to the core network node indicating that the terminal is in a specific state; the communication node receiving a state exit report from the terminal, the received state exit report indicating that the terminal has exited the specific state and has entered a normal state; the communication node forwarding the state exit report to the core network node; and the communication node receiving a second configuration from the core network node based on the core network node receiving the state exit report.

[0025] 13. The solution according to claim 1 further includes: receiving, by the communication node, a specific status report from the second terminal indicating whether the second terminal is in a specific state; receiving, by the communication node, a configuration from an operation administration and maintenance (OAM) node; selecting, by the communication node, the selected terminal based on receiving, by the communication node, the specific status report from the second terminal indicating that the second terminal is not in the specific state; and forwarding, by the communication node, the configuration to the selected terminal.

[0026] 14. The solution of claim 1, wherein the measurements include immediate MDT measurements corresponding to a radio resource control connection state.

[0027] 15. The solution of claim 1, wherein the status information indicates at least one of: the terminal is in an overheat state, the terminal is in a power saving state, the terminal is in a special or normal state, the terminal has entered or exited an overheat state, the terminal has entered or exited a power saving state, the terminal has entered or exited a specific state, a severity level indication, and a measurement list including measurements that cannot be performed.

[0028] 16. A solution for wireless communication, comprising: receiving, by a terminal, a configuration for reducing a path test overhead from a communication node; and determining, by the terminal, that the terminal is in a specific state based on the received configuration for reducing the path test overhead, wherein the terminal is configured not to perform any measurement when in the specific state, or to send any measurement recorded by the terminal in the specific state together with an indication that the terminal is in the specific state to the communication node.

[0029] 17. A solution for wireless communication, comprising: receiving, by a terminal, a log-based MDT configuration for reducing drive test overhead from a communication node; performing, by the terminal, measurements in an idle or inactive state based on the configuration for reducing drive test overhead; recording, by the terminal, all measurement records performed by the terminal in a normal state; and sending, by the terminal, the measurement records to a base station.

[0030] 18. The solution according to claim 17 further comprises: determining, by the terminal, that the terminal is in a specific state; and discarding, by the terminal, any measurement record recorded by the terminal in the specific state, or sending any measurement record recorded by the terminal in the specific state together with an indication that the terminal is in the specific state, or the terminal does not perform any measurement in the specific state.

[0031] 19. A solution for wireless communication, comprising: receiving, by a communication node, a log-based MDT configuration for reducing drive test overhead from a network node; sending, by the communication node, the log-based MDT configuration for reducing drive test overhead to a first terminal and a second terminal, wherein the first terminal and the second terminal are configured to perform measurements in an idle or inactive state and record any measurement records when each of the first terminal and the second terminal is in a normal state; and receiving, by the communication node, measurement records recorded by the first terminal and the second terminal.

[0032] 20. The solution according to claim 19, wherein, based on receiving the log-based MDT configuration for reducing the drive test overhead, the first terminal and the second terminal are configured to: determine that the first terminal or the second terminal is in a specific state; and discard any measurement record recorded by the terminal in the specific state by the first terminal or the second terminal, or send each measurement record recorded by the first terminal or the second terminal in the specific state together with an indication of being in the specific state by the first terminal or the second terminal, or the first terminal or the second terminal does not perform any measurement in the specific state.

[0033] 21. A solution for wireless communication, comprising: receiving, by a terminal from a base station, a log-based MDT configuration for reducing route test overhead, the log-based MDT configuration comprising an interval configured for periodic out-of-coverage measurements, wherein the interval configured for the periodic out-of-coverage measurements is different from the interval configured for the log-based MDT configuration; when the terminal enters a state of staying in any cell selection, performing, by the terminal, periodic out-of-coverage measurements, and recording the periodic out-of-coverage measurements at each time instance identified by the interval configured for the periodic out-of-coverage measurements; and sending, by the terminal, the periodic out-of-coverage measurement records recorded by the terminal to the base station.

[0034] 22. The solution according to claim 21, wherein the out-of-coverage measurement record includes any one of the following: the terminal is in the out-of-coverage state, the terminal enters the out-of-coverage state, the terminal exits the out-of-coverage state, the terminal location information, the terminal's moving direction, the terminal's moving speed information, the time information of the time when the terminal enters the out-of-coverage state, the time information of the time when the terminal exits the out-of-coverage state, the duration of the terminal in the out-of-coverage state, and the current time information.

[0035] 23. A wireless communication device comprising a processor configured to perform the solution according to any one of claims 1 to 22.

[0036] 24. A non-transitory computer readable medium having stored thereon a code which, when executed by a processor, causes the processor to implement the solution according to any one of claims 1 to 22.

[0037] The details of one or more embodiments are set forth in the accompanying appendices, drawings, and the following description. Other features should be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 An exemplary network architecture is shown.

[0039] Figure 2 An exemplary gNB structure diagram is shown.

[0040] Figure 3 A diagram showing an exemplary signaling process for reporting logged MDT measurement results.

[0041] Figure 4 A diagram showing a signaling procedure for reporting MDT measurements according to the first exemplary embodiment or the second exemplary embodiment.

[0042] Figure 5 A diagram showing a signaling procedure for reporting MDT measurements according to a third exemplary embodiment.

[0043] Figure 6 A diagram showing a signaling procedure for reporting MDT measurements according to a fourth exemplary embodiment.

[0044] Figure 7 A diagram showing a signaling procedure for reporting MDT measurements according to a fifth exemplary embodiment.

[0045] Figure 8 A diagram showing a signaling procedure for reporting MDT measurements according to a sixth exemplary embodiment.

[0046] Fig. 9 A diagram showing a signaling procedure for reporting MDT measurements according to a seventh exemplary embodiment.

[0047] Fig.10 A diagram showing a signaling procedure for reporting MDT measurements according to an eighth exemplary embodiment.

[0048] Fig.11 A diagram showing a signaling procedure for reporting MDT measurements according to a ninth exemplary embodiment.

[0049] Fig.12 A diagram showing a signaling procedure for reporting MDT measurements according to a tenth exemplary embodiment.

[0050] Fig.13 A diagram showing a signaling procedure for reporting MDT measurements according to an eleventh exemplary embodiment.

[0051] Fig.14 A diagram showing a signaling procedure for reporting MDT measurements according to a twelfth exemplary embodiment.

[0052] Fig.15 A diagram showing a signaling procedure for reporting MDT measurements according to the thirteenth exemplary embodiment or the fourteenth exemplary embodiment.

[0053] Fig.16 A diagram showing a signaling procedure for reporting MDT measurements according to a fifteenth exemplary embodiment.

[0054] Fig.17 A diagram showing a signaling procedure for reporting MDT measurements according to the sixteenth exemplary embodiment or the seventeenth exemplary embodiment.

[0055] Fig.18 A diagram showing a signaling procedure for reporting MDT measurements according to an eighteenth exemplary embodiment.

[0056] Fig.19 A block diagram of an exemplary method for reporting MDT measurements is shown.

[0057] Fig. 20 An example of a wireless communication system in which the technology according to one or more embodiments of the present technology can be applied is shown.

[0058] Fig.21 A block diagram representation of a portion of a hardware platform. DETAILED DESCRIPTION

[0059] Section headings are used in this application only to facilitate understanding and do not limit the scope of the embodiments to the sections in which they are described. In addition, although the embodiments are described with reference to 5G examples, the disclosed technology can be applied to wireless systems using protocols other than 5G or 3GPP protocols.

[0060] The development of a new generation of wireless communications (5G New Radio (NR) communications) is part of the ongoing mobile broadband evolution process to meet the growing network demands. NR will provide greater throughput to allow more users to connect simultaneously. Other aspects such as energy consumption, equipment cost, spectrum efficiency and latency are also important to meet the demands of various communication scenarios.

[0061] like Figure 1 As shown, the 5G mobile communication system 100 may include a 5G core network (5GC) and a next generation radio access network (NG-RAN). The 5GC may include network nodes such as an access mobility function (AMF), a session management function (SMF), a user plane function (UPF), NG-RAN, etc. The radio access technology (RAT) in the base station may include any ng-eNB that can continue to be an evolved 4G base station (or eNB) (i.e., the air interface is still 4G-RAT Evolved Universal Terrestrial Radio Access Evolved Universal Terrestrial Radio Access (E-UTRA)), as well as any of the 5G base stations gNB based on 5G RAT or NR. The NG-RAN base station may be connected to the 5GC via the NG interface, and the NG-RAN base station may be connected via the Xn interface.

[0062] like Figure 2 As shown, the gNB can be divided into gNB-CU and multiple gNB-DU network node entities, which can be connected through the F1 interface. After CU / DU separation, the external interface of the gNB may still include NG and Xn interfaces. The base station and the terminal UE can be connected through the air interface (Uu).

[0063] Both 4G and 5G systems support dual connectivity (DC). A dual-connected UE can maintain a connection with two base stations, where one base station can be one of the master nodes (MN) and the other base station is the secondary node (SN). The composition of the primary cell group (e.g., primary cell group (MCG)) involved in the dual connectivity operation in the primary base station, the composition of the secondary cell group (secondary cell group (SCG)) located in the secondary base station, and the primary cell in the primary cell group (primary cell (Pcell)), where the primary cell in the secondary cell group can be referred to as the primary SCG cell (PSCell).

[0064] To measure the time-consuming manual driving of 4G systems from Rel-10 version, Minimization of Drive Test (MDT) can be used. MDT technology can use base stations and UEs to measure various network performance indicators, and then report the measured indicators to the Trace Collection Entity (TCE).

[0065] MDT can be divided into management-based MDT and signaling-based MDT. The activation process of management-based MDT can be performed by OAM sending a tracking session activation message including MDT configuration information to the eNB, and the eNB can select an appropriate UE within the area specified by the message to configure MDT. The message can be sent to the selected UE. The signaling-based MDT activation process can track the activation message sent by the OAM configuration information MDT, which includes a user home subscriber server (HSS) to activate MDT measurements for the specified UE. The HSS can then specify the MDT configuration information to be sent to the UE. The core network can send the MDT configuration information of the specified UE to the eNB, and the eNB can forward the MDT configuration information to the specified UE to perform MDT measurements.

[0066] When the UE performs MDT, according to the RRC state, MDT can be divided into log-type MDT (for example, the corresponding UE may be in the idle state RRC_IDLE or the inactive state RRC_INACTIVE) and immediate MDT (for example, corresponding to the connected state RRC_CONNECTED). Log-type MDT can indicate that the UE is in the RRC_IDLE or RRC_INACTIVE state, and according to the relevant MDT configuration information previously received in the connected state (for example, the effective range, logging interval and logging duration of the MDT log), log-type MDT measurement is performed, logged and the measurement result is the MDT log. When the UE returns to the RRC_CONNECTED state, such as Figure 3As shown, an indication of "with measurement record" can be sent to the base station via an appropriate RRC uplink message (such as RRCConnectionSetupComplete). If necessary, the base station can send a UEINFORMATION REQUEST message to the UE to request the MDT record reported by the UE, one or more UEs via a UE INFORMATION REQUEST message (depending on the size of the recorded MDT), or all or part of the MDT log report. After receiving the MDT log, the base station can forward it to the TCE for statistical processing. Immediate MDT can refer to UE measurements (i.e., the measurements can also be in the connected state) and report the measurement results immediately after receiving the connection state information related MDT configuration (for example, the UE's measurement results may not be stored). Some immediate MDT measurements can also be completed by the base station itself without the need for the UE to provide measurements.

[0067] System Overview

[0068] This patent application describes techniques that can be implemented for reporting MDT measurements. When a UE is in a certain state (e.g., overheating, power saving, etc.), an MDT UE may no longer be suitable for other operations. A method for reporting MDT measurements includes at least one of the following:

[0069] 1. When reporting the MDT measurement results, the UE may include the UE's specific state information (indicating that the UE is in a specific state) in the reported MDT measurement results (e.g., some MDT measurement records in the MDT measurement results indicate that the UE is in a specific state). After the MDT measurement results are reported to the network, the network (e.g., base station, TCE, etc.) may decide how to process the MDT measurement records of these UEs in a specific state (e.g., ignore these records).

[0070] 2. The UE may notify the base station of the specific state information of the UE (indicating that the UE is in a specific state) (for example, notifying the base station to enter or leave a specific state, or periodically reporting the state of the UE). The base station may notify the CN of the specific state information of the UE (for example, when receiving the specific state information of the UE from the UE), and the CN may determine how to proceed according to the specific state information of the UE when performing MDT for a specified UE (for example, not for a specified UE to the base station). The MDT configuration information may be sent, or the MDT configuration information that the UE needs to complete may not be included in the MDT configuration information.

[0071] 3. The UE may notify the base station of specific state information of the UE (indicating that the UE is in a specific state) (for example, notifying the base station when entering or leaving a specific state, or periodically reporting the state of the UE). If the base station receives the MDT configuration information of the specified UE from the CN, if the base station finds that the specified UE is in a specific state, the base station may send an MDT configuration fault message carrying a fault cause to the CN, where the fault cause indicates that the UE is in a specific state.

[0072] 4. The UE may notify the base station of the UE's specific state information (indicating that the UE is in a specific state) (for example, notifying the base station when entering or exiting a specific state, or periodically reporting the UE's state). The base station may receive the MDT configuration information of the specified UE from the CN, and if the specified UE is currently in a specific state, the base station may send the MDT configuration information to the UE and the UE's specific state information to the CN, and the CN may decide how to handle the UE's specific state information (for example, deactivating the MDT of the specified UE or deleting the MDT measurement required by the UE in the MDT configuration information of the specified UE).

[0073] 5. The UE may notify the base station of the UE's specific state information (indicating that the UE is in a specific state) (for example, notifying the base station when entering or leaving a specific state), or periodically report the UE's state (specific state or normal state). After receiving the MDT configuration information from the OAM, the base station may not select UEs in a specific state to perform MDT based on the specific state information of each UE.

[0074] 6. The base station may receive MDT configuration information of the specified UE from the CN. The base station may send the MDT configuration information to the UE. The base station may receive specific state information of the UE indicating that the UE is in a specific state from the UE, and the base station sends a TRACEFAILURE INDICATION message to the CN to indicate that the UE is in a specific state.

[0075] 7. The UE may notify the base station of the specific state information of the UE (indicating that the UE is in a specific state), and the base station may notify the CN of the specific state information of the UE. When performing MDT for a specified UE, the CN may determine how to process according to the specific state information of the UE (for example, not targeting the UE, or deleting part or all of the MDT measurements that the UE needs to complete in the MDT configuration information).

[0076] 8. The UE may notify the base station of specific state information of the UE (indicating that the UE is in a specific state), and the specific state information of the UE may include at least one of the following: the state of the UE (e.g., a specific state, a normal state, an overheat state, and a power saving state), the UE entering a specific state (e.g., entering a specific state, entering an overheat state, entering a power saving state), and the UE exiting a specific state (e.g., exiting a specific state, exiting an overheat state, exiting a power saving state), severity (e.g., high, medium, low), and measurement information that may not be performed temporarily.

[0077] 9. The base station may notify the base station of the specific state information of the UE (indicating that the UE is in a specific state), and the specific state information of the UE may include at least one of the following: the state of the UE (for example, a specific state, a normal state, an overheat state, and a power saving state), the UE entering a specific state (for example, entering a specific state, entering an overheat state, entering a power saving state), and the UE exiting a specific state (for example, exiting a specific state, exiting an overheat state, exiting a power saving state), severity (for example, high, medium, low), and measurement information that may not be performed temporarily.

[0078] Example 1

[0079] Figure 4 A diagram showing a signaling process 400 for reporting MDT measurements according to the first exemplary embodiment or the second exemplary embodiment is shown. In step 401, MDT configuration information may be sent from a CN 410 to a base station 420. The CN may send immediate MDT configuration information to the base station and specify a UE for MDT measurements.

[0080] In step 402, the base station 420 sends relevant MDT configuration information to the designated UE 430 according to the MDT configuration information received from the CN. The MDT configuration information sent by the CN to the base station may include multiple measurement information, and some measurements may be completed by the UE, while some measurements may be completed by the base station. The relevant MDT configuration information sent by the base station to the designated UE may only include measurement information that needs to be completed by the UE.

[0081] In step 403, the base station 420 may perform relevant MDT measurements.

[0082] In step 404, UE 430 may perform relevant MDT measurements.

[0083] In step 405 , the base station 420 may send a related MDT measurement result report to the TCE 440 .

[0084] In step 406, the UE 430 reports the relevant MDT measurement result to the base station 420. The MDT measurement result may include multiple MDT measurement records for each MDT measurement record, and if the relevant MDT measurement is performed by a UE in a specific state, the MDT measurement record may include a specific state indication of the UE. The specific state indication of the UE may be used to indicate that the UE is in a specific state such as overheating, power saving, etc.

[0085] In step 407 , the base station 420 forwards the relevant MDT measurement result reported by the UE to the TCE 440 .

[0086] In step 408, the TCE may perform statistical processing on the received MDT measurement results (eg, may include multiple MDT measurement logs), and may ignore the MDT measurement logs including an indication indicating that the UE is in a specific state (ie, do not perform statistical processing on such MDT measurement logs).

[0087] Example 2

[0088] like Figure 4 As shown, the base station 420 may forward the relevant MDT measurement results reported by the UE to the TCE 440, but first checks each MDT measurement record in the MDT measurement results when forwarding, and ignores the MDT measurement record when the MDT measurement record includes a UE-specific status indication. That is, in step 407, the MDT measurement record may not be forwarded to the TCE.

[0089] In step 408 , the TCE 408 may perform statistical processing on the received MDT measurement results.

[0090] Example 3

[0091] Figure 5 A diagram of a signaling process 500 for reporting MDT measurements according to a third exemplary embodiment is shown. In step 501, UE 530 may report to base station 520 that the UE is currently in a specific state such as overheating, power saving, etc. The UE may report to the base station that the UE is currently in a specific state by event triggering or periodic reporting. When reporting to the base station by event triggering reporting mode, the UE may report to the base station that the UE currently enters and exits the specific state when entering and exiting the specific state.

[0092] In step 502 , the CN 510 may send MDT configuration information specifying MDT measurements of the UE to the base station 520 .

[0093] In step 503, the base station 520 may find that the designated UE is currently in a specific state according to the MDT configuration information received from the CN. The MDT configuration information sent by the CN to the base station may include multiple measurement information, and some measurements need to be completed by the UE, while some measurements need to be completed by the base station. The base station may agree to the measurements that can be completed by itself and reject the measurements that need to be completed by the UE. The base station may send information that the MDT configuration is partially successful to the CN, and the information that the MDT configuration is partially successful includes at least one of the following: an identifier of the agreed measurement, a rejected measurement identifier, and a rejection reason (the UE is currently in a specific state).

[0094] In step 504, the base station 520 may perform MDT measurements.

[0095] In step 505 , the base station 520 may send an MDT measurement result report to the TCE 540 .

[0096] In step 506 , the TCE 540 may perform statistical processing of the MDT measurement results.

[0097] Example 4

[0098] Figure 6 A diagram of a signaling process 600 for reporting MDT measurements according to a fourth exemplary embodiment is shown. In step 601, UE 630 may report to base station 620 that the UE is currently in a specific state such as overheating, power saving, etc. The UE may report to the base station that the UE is currently in a specific state by event triggering or periodic reporting. When reporting to the base station by event triggering reporting mode, UE 630 may report to the base station that the UE currently enters and exits the specific state when entering and exiting the specific state.

[0099] In step 602, the CN 610 may send immediate MDT configuration information to the base station 620 and the UE designated for MDT measurement.

[0100] In step 603, the base station 620 may determine that the designated UE is currently in a specific state based on the MDT configuration information received from the CN. The MDT configuration information sent by the CN to the base station may include multiple measurement information, some of which need to be completed by the UE, and some of which need to be completed by the base station. In this embodiment, it can be assumed that all measurements need to be completed by the UE, or that some measurements are still rejected even though they do not need to be completed by the UE. The base station may send an MDT configuration failure message to the CN. The MDT configuration failure message may include at least one of the following: an identifier of the agreed measurement, an identifier of the rejected measurement, and a cause of the failure (the UE is currently in a specific state). The MDT configuration failure message may be a TRACE FAILURE INDICATION message.

[0101] Example 5

[0102] Figure 7 FIG. 7 is a diagram showing a signaling process 700 for reporting MDT measurements according to a fifth exemplary embodiment. Steps 701-703 may be similar to those described with respect to Figure 6 601-603 described above.

[0103] In step 704, CN 710 may send MDT configuration information for a specified UE to the base station according to the fault cause included in the MDT configuration fault message, wherein the MDT configuration information indicates that the UE is currently in a specific state, and the MDT configuration information does not include any MDT measurement that needs to be completed by the UE, and no longer includes rejected MDT measurements.

[0104] In step 705, based on the MDT configuration information received from the CN, the base station 720 may find that the designated UE is currently in a specific state, but the MDT configuration information may not include measurements to be completed by the UE, and does not include measurements to be rejected, and therefore may not send an MDT configuration failure message to the CN. The base station may perform relevant MDT measurements according to the MDT configuration information.

[0105] Example 6

[0106] Figure 8 A diagram of a signaling process 800 for reporting MDT measurements according to a sixth exemplary embodiment is shown. In step 801, UE 830 may report to base station 820 that the UE is currently in a specific state such as overheating, power saving, etc. The UE may report to the base station that the UE is currently in a specific state through event triggering or periodic reporting. When reporting to the base station through the event triggered reporting mode, the UE may report to the base station that the UE currently enters and exits the specific state when entering and exiting the specific state.

[0107] In step 802, the CN 810 may send immediate MDT configuration information to the base station 820 and the designated UE for MDT measurement.

[0108] In step 803, the base station 820 may send relevant MDT configuration information to the designated UE 830 according to the MDT configuration information received from the CN.

[0109] In step 804, the base station 820 may determine that the designated UE is currently in a specific state. The base station may send specific state information of the UE to the CN and notify the CN that the current UE is in a specific state such as overheating, power saving, etc.

[0110] In step 805, the CN 810 may send an MDT deactivation message for a designated UE in a specific state to the base station.

[0111] In step 806, the base station 820 sends MDT deactivation information to the designated UE based on the MDT deactivation message of the designated UE, so that the designated UE stops MDT measurement.

[0112] Example 7

[0113] Fig. 9 FIG. 9 is a diagram showing a signaling process 900 for reporting MDT measurements according to a seventh exemplary embodiment. Steps 901-903 may be similar to those described with respect to Figure 8 The steps 801-803 described.

[0114] In step 904, the base station 920 may determine that the specified UE is currently in a specific state. The base station 920 may send the specific state information of the UE to the CN, and notify the CN that the current UE is in a specific state such as overheating, power saving, etc. The specific state information of the UE may also include at least one of the following: severity (e.g., high, medium, low), temporarily unavailable measurement information.

[0115] In step 905, the CN 910 may determine to deactivate the MDT of the designated UE or delete some MDT measurements according to the received UE specific status information. If it is decided to delete some MDT measurements, the CN 910 may send MDT configuration information to the base station of the designated UE after deleting some MDT measurements.

[0116] In step 906, the base station 920 may send relevant MDT configuration information to the designated UE 930 according to the MDT configuration information received from the CN.

[0117] Example Embodiment 8

[0118] Fig.10 A diagram of a signaling process 1000 for reporting MDT measurements according to an eighth exemplary embodiment is shown. In step 1001, UE 1030 may report to base station 1020 that the UE is currently in a specific state such as overheating, power saving, etc. UE 1030 may report to the base station that the UE is currently in a specific state by event triggering or periodic reporting. When reporting to the base station by event triggering reporting mode, the UE may report to the base station that the UE enters and exits the specific state when entering and exiting the specific state.

[0119] In step 1002, the base station 1020 may send specific status information of the UE to the CN, and notify the CN that the UE is currently in a specific status such as overheating, power saving, etc.

[0120] In step 1003, the CN 1010 may intend to select a designated UE to perform an immediate MDT measurement, but the designated UE may currently be in a specific state and decides not to send MDT configuration information for the designated UE to the base station.

[0121] In step 1004, UE 1030 may report to base station 1020 that the UE has exited a specific state.

[0122] In step 1005, the base station 1020 may send the UE specific state exit information to the CN 1010, and notify the CN that the current UE has exited the specific state.

[0123] In step 1006, the CN 1010 may still intend to select a designated UE 1030 for immediate MDT measurement based on the currently designated UE that has exited the specific state, and decide to send the MDT configuration information of the designated UE to the base station.

[0124] Example Embodiment 9

[0125] Fig.11 A diagram of a signaling process 1100 for reporting MDT measurements according to a ninth exemplary embodiment is shown. In step 1101, UE 2 1140 may report to the base station 1120 that UE 2 is currently in a specific state such as overheating, power saving, etc. The UE may report to the base station that the UE is currently in a specific state by event triggering or periodic reporting. When reporting to the base station by event triggering reporting mode, the UE may report to the base station that the UE is currently entering and exiting a specific state when entering and exiting a specific state.

[0126] In step 1102 , the OAM 1110 may send immediate MDT configuration information to the base station 1020 .

[0127] In step 1103, the base station 1120 may select UEs to perform MDT according to the MDT configuration information, and intends to select UE 1 and UE 2 to perform MDT measurement, but finds that UE 2 is currently in a specific state, and thus UE 2 may not be selected.

[0128] In step 1104 , the base station 1120 may send relevant MDT configuration information to the UE 1 1130 .

[0129] Example Embodiment 10

[0130] Fig.12A diagram showing a signaling process 1200 for reporting MDT measurements according to a tenth exemplary embodiment is shown. In step 1201, the CN 1210 may send configuration information of the logged MDT to the base station 1220 and specify a UE that performs MDT measurements.

[0131] In step 1202, the base station 1220 may send relevant MDT configuration information to the designated UE 1230 according to the MDT configuration information received from the CN.

[0132] In step 1203, the UE may enter the RRC_IDLE or RRC_INACTIVE state, and the UE may perform relevant MDT measurements and record the measurement results. For each MDT measurement record, if the relevant MDT measurement is performed by the UE in a specific state, the MDT measurement record may include a specific state indication of the UE, or the UE does not save the MDT measurement record. The UE specific state indication may be used to indicate that the UE is in a specific state such as overheating, power saving, etc.

[0133] In step 1204, the UE may report the measurement result of the related logging MDT to the base station.

[0134] Example Embodiment 11

[0135] Fig.13 A diagram showing a signaling process 1300 for reporting MDT measurements according to an eleventh exemplary embodiment is shown. In step 1301 , the OAM 1310 may send configuration information of the Logged MDT to the base station 1320 .

[0136] In step 1302 , the base station 1320 selects UE 1 and UE 2 to perform MDT measurement according to the MDT configuration information received from the OAM 1310 , and may send relevant MDT configuration information to UE 1 and UE 2 .

[0137] In step 1303, UE 1 1330 and UE 2 1340 may enter the RRC_IDLE or RRC_INACTIVE state, and UE 1 and UE 2 may respectively perform relevant MDT measurements and may record the measurement results. For each MDT measurement record, if the relevant MDT measurement is performed by a UE in a specific state, the MDT measurement record may include a specific state indication of the UE, or the UE does not save the MDT measurement record. The specific state indication of the UE may be used to indicate that the UE is in a specific state such as overheating, power saving, etc.

[0138] In step 1304 , UE 1 1330 and UE 2 1340 may report related log-based MDT measurement results to base station 1320 .

[0139] Example 12

[0140] Fig.14 A diagram of a signaling process 1400 for reporting MDT measurements according to a twelfth exemplary embodiment is shown. In step 1401, the CN 1410 may send configuration information of the log-based MDT to the base station 1420 and specify a UE that performs MDT measurements. The configuration information of the log-based MDT may include two logging intervals (or log intervals), one interval for the log-based MDT measurement and the other for the out-of-coverage measurement.

[0141] In step 1402, the base station 1420 may send relevant MDT configuration information to a designated UE according to the MDT configuration information received from the CN.

[0142] In step 1403, UE 1430 may enter the RRC_IDLE or RRC_INACTIVE state and remain in a normal state (Camped Normally), and the UE may perform measurement and record the measurement result according to the interval configured for the measurement record of the log-based MDT.

[0143] In step 1404, UE 1430 may enter the Camped on Any Cell state (i.e., Out Of Coverage state), and the UE performs measurement and records the measurement result each time the interval is crossed according to the interval configured for the Out Of Coverage measurement log. Each Out Of Coverage measurement record may include at least one of the following: the UE currently in the Out Of Coverage state, UE location information, UE moving direction information, UE moving speed information, and current time information.

[0144] In step 1405, UE 1430 may enter the Camped on Any Cell state, and the UE may record the state. The Camped on Any Cell state record may include at least one of the following: an indication of the UE in the Camped on Any Cell state, location information of entering the Camped on Any Cell state, moving direction information of entering the Camped on Any Cell state, moving speed information of entering the Camped on Any Cell state, location information of exiting the Camped on Any Cell state, moving direction information of exiting the Camped on Any Cell state, moving speed information of exiting the Camped on AnyCell state, time information of entering the Camped on Any Cell state, time information of exiting the Camped on AnyCell state, and duration information in the Camped on Any Cell state. When the UE exits the Camped on Any Cell state, the location information of exiting the Camped on Any Cell state, the moving direction information of exiting the Camped on Any Cell state, the moving speed information of exiting the Camped on Any Cell state, the time information of exiting the Camped on AnyCell state, and the duration information in the Camped on Any Cell state may be filled in.

[0145] In step 1406, UE 1430 may report relevant log-based MDT measurement results to the base station, which may include any of the following:

[0146] (1) The UE may send an indication of out-of-coverage measurement records to the base station. The base station sends a UEINFORMATION REQUEST message to the UE. The UE INFORMATION REQUEST message includes an indication of requesting to obtain out-of-coverage measurement records. The UE sends the out-of-coverage measurement records to the base station through a UE INFORMATION RESPONSE message.

[0147] (2) The UE may send an indication indicating the existence of a Camped on Any Cell record to the base station, and the base station may send a UE INFORMATION REQUEST message to the UE, the UE INFORMATION REQUEST message including an indication requesting to obtain a Camped on Any Cell status record, and the UE may send the Camped on Any Cell status record to the base station using a UE INFORMATION RESPONSE message.

[0148] (3) The UE may send an indication of a log-based MDT measurement record to the base station, and the base station may send a UEINFORMATION REQUEST message to the UE, and the UE INFORMATION REQUEST message may include an indication indicating a request for obtaining the log-based MDT measurement record, and the log-based MDT measurement record is sent to the base station via a UE INFORMATION RESPONSE message. The log-based MDT measurement record may only include measurement records of the UE when the UE is in a normal state (Camped Normally), that is, it may not include measurement records of the UE in the Any Cell Selection state and the Camped on Any Cell state.

[0149] (4) The UE may send an indication of a log-based MDT measurement record to the base station, and the base station may send an INFORMATION REQUEST message to the UE, which may include an indication indicating a request to obtain the log-based MDT measurement record, and the log-based MDT measurement record is sent to the base station via a UE INFORMATION RESPONSE message. The log-based MDT measurement record may include all measurement records recorded when the UE is camped normally, in the Any Cell Selection state, and in Camped on Any Cell.

[0150] Example 13

[0151] Fig.15 A diagram showing a signaling process 1500 for reporting MDT measurements according to the thirteenth exemplary embodiment or the fourteenth exemplary embodiment is shown. In step 1501, the CN 1510 may send log-type MDT configuration information to the base station 1520 and specify a UE that performs MDT measurements. The log-type MDT configuration information may include an indication for configuring a triggering event (event trigger) for out of coverage measurements.

[0152] In step 1502, the base station 1520 may send relevant MDT configuration information to the designated UE 1530 according to the MDT configuration information received from the CN.

[0153] In step 1503, the UE may enter the RRC_IDLE or RRC_INACTIVE state and remain in CampedNormally, and the UE performs measurement and records the measurement result each time according to the configured log-type MDT measurement logging interval.

[0154] In step 1504, UE 1530 may enter the Any Cell Selection state (i.e., the Out Of Coverage state), and the UE triggers the Out Of Coverage measurement according to the configured trigger event, which may indicate that a measurement has been performed and the measurement result has been recorded. The Out Of Coverage measurement record may include at least one of the following: an indication that the UE enters the Out Of Coverage state, location information of entering the Out Of Coverage state, moving direction information of entering the Out Of Coverage state, moving speed information of entering the Out Of Coverage state, and time information of entering the Out Of Coverage state.

[0155] In step 1505, the UE may exit the Any Cell Selection state, and the UE triggers an Out Of Coverage measurement according to a configured event. The Out Of Coverage measurement may indicate that a measurement was performed and the measurement result was recorded. The Out Of Coverage measurement record may include at least one of the following: an indication that the UE exits the Out Of Coverage state, location information of exiting the Out Of Coverage state, information about the moving direction of exiting the Out Of Coverage state, moving speed information of exiting the Out Of Coverage state, and time information when exiting the Out Of Coverage state. This Out Of Coverage measurement record and the Out Of Coverage measurement record in step 1504 may be recorded as two separate records.

[0156] Example Embodiment 14

[0157] In step 1504, the UE may enter the Any Cell Selection state (i.e., the Out Of Coverage state), and the UE triggers the Out Of Coverage measurement according to the configured event. The configured event indicates that a measurement was performed and the measurement result was recorded. The Out Of Coverage measurement record may include at least one of the following: an indication that the UE is in the Out Of Coverage state, location information of entering the Out Of Coverage state, moving direction information of entering the Out Of Coverage state, moving speed information of entering the Out Of Coverage state, and time information of entering the Out Of Coverage state.

[0158] In step 1505, the UE may exit the Any Cell Selection state, and the UE triggers an Out Of Coverage measurement according to a configured event. The configured event may indicate that a measurement was performed and the measurement result was recorded. The Out Of Coverage measurement record may include at least one of the following: location information of exiting the Out Of Coverage state, information of the moving direction of exiting the Out Of Coverage state, moving speed information of exiting the Out Of Coverage state, time information when exiting the Out Of Coverage state, and duration information of the Out Of Coverage state. This Out Of Coverage measurement record and the Out Of Coverage measurement record in step 1504 may be the same record. When the UE exits the Any Cell Selection state, the relevant measurement information may be added to the Out Of Coverage measurement record recorded in step 1504.

[0159] Example 15

[0160] Fig.16A diagram of a signaling process 1600 for reporting MDT measurements according to a fifteenth exemplary embodiment is shown. In step 1601, the CN 1610 may send log-type MDT configuration information to the base station 1 1620 and specify a UE that performs MDT measurements. The log-type MDT configuration information may include RAT information (e.g., RAT1) for performing MDT measurements.

[0161] In step 1602, the base station 1620 may send relevant MDT configuration information to the designated UE 1630 according to the MDT configuration information received from the CN.

[0162] In step 1603, the CN 1610 may send the log-type MDT configuration information to the base station 1 1620 and specify the UE to perform the MDT measurement. The log-type MDT configuration information may include RAT information (eg, RAT2) for performing the MDT measurement.

[0163] In step 1604, the base station 1620 may send relevant MDT configuration information to the designated UE according to the MDT configuration information received from the CN.

[0164] In step 1605 , the UE 1630 may enter the RRC_IDLE or RRC_INACTIVE state and camp on a cell of RAT1 , and the UE performs measurement according to the logged MDT configuration information of RAT1 and records the measurement result.

[0165] In step 1606, the UE may camp on a cell of RAT2, and the UE may perform measurement according to the log-type MDT configuration information of RAT2, and record the measurement result.

[0166] In step 1607 , the UE may enter the RRC_CONNECTED state and access the cell of RAT1 (eg, the cell of base station 1 ), and the UE may report the MDT measurement result of RAT1 to base station 1 .

[0167] In step 1608, the UE accesses the RAT2 cell (e.g., the cell of base station 2) or the UE accesses the RAT1 cell (e.g., the cell of base station 1), and the UE may enter DC operation, the RAT2 base station (e.g., base station 2) may be used as a secondary node (SN), and the UE may report the MDT measurement results of RAT2 to base station 2.

[0168] Example Embodiment 16

[0169] Fig.17A diagram showing a signaling process 1700 for reporting MDT measurements according to the sixteenth exemplary embodiment or the seventeenth exemplary embodiment is shown. In step 1701, the base station 1720 may send a UE Information Request message to the UE, wherein the indication includes a request to obtain a connection establishment failure report.

[0170] In step 1702, UE 1710 may send a UE Information Response message to the base station. The UE Information Response message may include a connection establishment failure report. The connection establishment failure report may include one or more connection establishment failure records. When the connection establishment failure report may include only one connection establishment failure record, the record may include at least one of the following: one or more cell identifiers of one or more cells where the connection establishment failure occurs, one or more pieces of location information of the UE when the connection establishment failure occurs, and one or more pieces of time information when the connection failure occurs. When the connection establishment failure report includes multiple connection establishment failure records, each record may include at least one of the following: a cell identifier of a cell where the connection establishment failure occurs, location information of the UE when the failure occurs, UE moving direction information when the failure occurs, UE moving speed information when the failure occurs, and time information when the failure occurs.

[0171] Example Embodiment 17

[0172] In step 1701, the base station may send a UE Information Request message to the UE, where the indication may include a request for obtaining a mobility history report.

[0173] In step 1702, the UE may send a UE Information Response message including a mobility history report (Mobility History Report) to the base station. The mobility history report may include one or more records, each record including at least one of the following: an identifier of a cell where the UE stayed, a time spent in the cell, a beam identifier of a beam where the UE stayed, a time spent in the beam, an identifier of a PSCell where the UE stayed, and a length of time spent in the PSCell.

[0174] Example Embodiment 18

[0175] Fig.18A diagram showing a signaling process for reporting MDT measurements according to an eighteenth exemplary embodiment is shown. In step 1801, the CN 1810 may send MDT configuration information to the CU 1820 and specify a UE that performs MDT measurements. The MDT configuration information may include at least one of the following: RAT information for performing MDT measurements, a logging interval (log interval) specifically used to configure periodic measurements of out of coverage (Out OfCoverage), and an indication of an event trigger (event trigger) specifically used to configure measurements of out of coverage (Out OfCoverage).

[0176] In step 1802, CU 1820 may send relevant MDT configuration information to DU 1830 through the F1 interface according to the received MDT configuration information. The relevant MDT configuration information may include at least one of the following: RAT information for performing MDT measurement, a logging interval (log interval) specifically used for configuring out of coverage periodic measurement, and an indication of event triggering (event triggering) specifically used for configuring out of coverage measurement.

[0177] In step 1803, the DU 1830 may send relevant MDT configuration information to the designated UE 1840 according to the received MDT configuration information. The relevant MDT configuration information may include at least one of the following: RAT information for performing MDT measurement, a logging interval (log interval) specifically used for configuring Out Of Coverage periodic measurement, and an indication of an event trigger (event trigger) specifically used for configuring Out Of Coverage measurement.

[0178] Fig.19 A flow chart 1900 of a method for reporting MDT measurements is shown. The method 1900 may include receiving a configuration for reducing drive test overhead from a core network node and receiving status information indicating a terminal status from a terminal (block 1902). The configuration for reducing drive test overhead may include a minimization of drive test (MDT) configuration as discussed in this embodiment.

[0179] The method may further include determining a state of the terminal based on state information indicative of the state of the terminal (block 1904). The method may further include sending a measurement report to a network node, the measurement report including state information indicative of the state of the terminal (block 1906).

[0180] In some embodiments, the measurement report includes measurements performed by either the terminal or the communication node.

[0181] In some embodiments, the configuration for reducing drive test overhead indicates a first set of measurements and / or a second set of measurements, the first set of measurements will be performed by the communication node, and the second set of measurements will be performed by the terminal or any one of the communication nodes communicating with the terminal, wherein the configuration for reducing drive test overhead includes a minimization of drive test (MDT) configuration.

[0182] In some embodiments, a method for wireless communication may include: receiving, by a terminal, a configuration for minimization of drive tests (MDT) from a communication node. The method may also include: determining, by the terminal, that the terminal is in a specific state, wherein the terminal is configured not to perform any measurements when in the specific state, or to send any measurements recorded by the terminal in the specific state together with an indication that the terminal is in the specific state to the communication node.

[0183] In some embodiments, the method includes: receiving, by a communication node, a second set of measurements performed by a terminal and information indicating an update status of the terminal, and forwarding, by the communication node, the second set of measurements and the information indicating the update status of the terminal to a network node, wherein the network node is configured to: perform statistical processing of the second set of measurements based on identifying that the information indicating the update status of the terminal indicates that the terminal is in a specific state.

[0184] In some embodiments, the method comprises: forwarding, by the communications node, the received configuration to the terminal, wherein the terminal is configured to perform a second set of measurements based on the configuration.

[0185] In some embodiments, the method includes: receiving, by the communication node, a terminal status report from the terminal indicating that the terminal is in a specific state, wherein the terminal status report is sent based on a trigger of a state change of the terminal or an occurrence of a periodic reporting time instance.

[0186] In some embodiments, the method includes: sending, by the communication node to the core network node, a configuration partial success message indicating that the first set of measurements can be performed by the communication node, and the second set of measurements cannot be performed by the terminal.

[0187] In some embodiments, the method includes: sending, by the communication node, a configuration failure message to a core network node based on determining that the terminal is in a specific state, the configuration failure message indicating that the terminal cannot perform any measurement.

[0188] In some embodiments, the method includes receiving, by the communications node, an additional configuration including a first set of measurements for the terminal; and performing, by the communications node, the first set of measurements according to the additional configuration.

[0189] In some embodiments, the method includes: sending, by a communication node, a specific status message to a core network node indicating that the terminal is in a specific status; receiving, by the communication node, a deactivation message from the core network node, the deactivation message including information for deactivating measurement by the terminal; and forwarding, by the communication node, the deactivation message to the terminal, wherein the terminal is configured to deactivate measurement based on receiving the deactivation message.

[0190] In some embodiments, the method includes: sending, by a communication node, a specific status message to a core network node indicating that the terminal is in a specific state; based on the core network node determining that the terminal is in a specific state, receiving, by the communication node, a configuration that does not include measurements that the terminal cannot perform; and forwarding, by the communication node, the configuration to the terminal.

[0191] In some embodiments, the method includes: sending, by a communication node, a specific status message to a core network node indicating that the terminal is in a specific status; receiving, by the communication node, a status exit report from the terminal, the received status exit report indicating that the terminal has exited the specific status and has entered a normal status; forwarding, by the communication node, the status exit report to the core network node; and receiving, by the communication node, a second configuration from the core network node based on the core network node receiving the status exit report.

[0192] In some embodiments, the method includes: receiving, by the communication node, a specific status report from a second terminal indicating whether the second terminal is in a specific state; receiving, by the communication node, a configuration from an operations administration and maintenance (OAM) node; selecting, by the communication node, a selected terminal based on receiving, by the communication node, a specific status report from the second terminal indicating that the second terminal is not in a specific state; and forwarding, by the communication node, the configuration to the selected terminal.

[0193] In some embodiments, the measurements include immediate MDT measurements corresponding to a radio resource control connection state.

[0194] In some embodiments, the status information indicates at least one of: the terminal is in an overheat state, the terminal is in a power saving state, the terminal is in a special or normal state, the terminal has entered or exited an overheat state, the terminal has entered or exited a power saving state, the terminal has entered or exited a specific state, a severity level indication, and a measurement list including measurements that cannot be performed.

[0195] In another embodiment, a method for wireless communication includes: receiving, by a terminal, a log-based MDT configuration for reducing drive test overhead from a communication node. The method may also include: performing, by the terminal, measurements in an idle or inactive state based on the configuration for reducing drive test overhead. The method may also include: recording, by the terminal, all measurement records performed by the terminal in a normal state. The method may also include: sending, by the terminal, the measurement records to a base station.

[0196] In some embodiments, the method includes: determining, by the terminal, that the terminal is in a specific state; and discarding, by the terminal, any measurement record recorded by the terminal in the specific state, or sending any measurement record recorded by the terminal in the specific state together with an indication that the terminal is in the specific state, or the terminal does not perform any measurement in the specific state.

[0197] In another embodiment, a method for wireless communication includes: receiving, by a communication node, a log-based MDT configuration for reducing drive test overhead from a network node. The method also includes: sending, by the communication node, the log-based MDT configuration for reducing drive test overhead to a first terminal and a second terminal, wherein the first terminal and the second terminal are configured to perform measurements in an idle or inactive state and record any measurement logs when each of the first terminal and the second terminal is in a normal state. The method also includes receiving, by the communication node, measurement logs recorded by the first terminal and the second terminal.

[0198] In some embodiments, each of the first terminal and the second terminal is configured to: determine that the first terminal or the second terminal is in a specific state; and discard, by the first terminal or the second terminal, any measurement record recorded by the terminal in the specific state, or send, by the first terminal or the second terminal, each measurement record recorded by the first terminal or the second terminal in the specific state together with an indication of being in the specific state, or the first terminal or the second terminal does not perform any measurement in the specific state.

[0199] In another embodiment, a method for wireless communication includes: receiving, by a terminal, a log-based MDT configuration for reducing route test overhead from a base station, the log-based MDT configuration including an interval configured for periodic out-of-coverage measurements, wherein the interval configured for periodic out-of-coverage measurements is different from the interval configured for the log-based MDT configuration. The method also includes: when the terminal enters a state of staying in any cell selection, performing, by the terminal, periodic out-of-coverage measurements, and recording the periodic out-of-coverage measurements at each time instance identified by the interval configured for the periodic out-of-coverage measurements. The method also includes sending, by the terminal, to the base station, a periodic out-of-coverage measurement record recorded by the terminal.

[0200] In some embodiments, the periodic out-of-coverage measurement record includes: any one of the terminal being in an out-of-coverage state, terminal location information, terminal moving direction, terminal moving speed information, and current time information.

[0201] Fig. 20An example of a wireless communication system in which the technology according to one or more embodiments of the present technology can be applied is shown. The wireless communication system 2000 may include one or more base stations (BS) 2005a, 2005b, one or more wireless devices 2010a, 2010b, 2010c, 2010d, and a core network 2025. The base stations 2005a, 2005b may provide wireless services to the wireless devices 2010a, 2010b, 2010c, and 2010d in one or more wireless sectors. In some embodiments, the base stations 2005a, 2005b include directional antennas to generate two or more directional beams to provide wireless coverage in different sectors.

[0202] In the above method, the terminal may be, for example, a UE or a wireless device as described herein. In the above method, the communication node may be, for example, a base station. In the above method, the network node may be a TCE, a base station or a nodeB. For example, a core network node may be a CN node or a server located in a core network of a wireless system.

[0203] The core network 2025 can communicate with one or more base stations 2005a, 2005b. The core network 2025 provides connections with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases for storing information related to the contracted wireless devices 2010a, 2010b, 2010c and 2010d. The first base station 2005a can provide wireless services based on the first radio access technology, and the second base station 2005b can provide wireless services based on the second radio access technology. According to the deployment scenario, the base stations 2005a and 2005b can be quasi-co-located, or can be installed separately on site. The wireless devices 2010a, 2010b, 2010c and 2010d can support a variety of different radio access technologies. In some embodiments, the base stations 2005a, 2005b can be configured to implement some of the technologies described in this application. The wireless devices 2010a to 2010d can be configured to implement some of the technologies described in this application.

[0204] Fig.21A block diagram representation of a portion of a hardware platform. A hardware platform 2105 such as a network device or communication node or base station or wireless device (or UE) or terminal may include a processor electronic device 2110 such as a microprocessor that implements one or more technologies presented in this application. The hardware platform 2105 may include a transceiver electronic device 2115 to send and / or receive wired or wireless signals through one or more communication interfaces such as an antenna 2120 or a wired interface. The hardware platform 2105 may implement other communication interfaces with defined protocols for sending and receiving data. The hardware platform 2105 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some embodiments, the processor electronic device 2110 may include at least a portion of the transceiver electronic device 2115. In some embodiments, at least some of the disclosed technologies, modules or functions and network nodes are implemented using the hardware platform 2105.

[0205] From the foregoing, it should be understood that, for illustrative purposes, specific embodiments of the disclosed technology are described herein, but various modifications may be made without departing from the scope of the invention. Therefore, the disclosed technology is not to be limited except as set forth in the appended claims.

[0206] The embodiments disclosed in the present application and other embodiments, modules and functional operations described can be implemented in digital electronic circuits, or in computer software, firmware or hardware including the structures disclosed in the present application and their equivalent structures, or in a combination of one or more of them. The disclosed embodiments and other embodiments can be implemented as one or more computer program products, that is, one or more modules of computer program instructions encoded on a computer-readable medium, for execution by a data processing device or controlling the operation of the data processing device. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a storage device, a composition that affects a machine-readable propagation signal, or a combination of one or more of them. The term "data processing device" covers all devices, equipment and machines for processing data, including, for example, a programmable processor, a computer or multiple processors or computers. In addition to hardware, the device may include code that creates an execution environment for the computer program in question, for example, code that constitutes a processor firmware, a protocol stack, a database management system, an operating system or a combination of one or more of them. A propagation signal is an artificially generated signal, for example, a machine-generated electrical signal, an optical signal or an electromagnetic signal, which is generated to encode information for transmission to a suitable receiver device.

[0207] A computer program (also referred to as a program, software, software application, script, or code) may be written in any form of programming language, including compiled or interpreted languages, and it may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple collaborative files (e.g., files storing one or more modules, subroutines, or portions of code). A computer program may be deployed to be executed on one computer, or on multiple computers located at one site or distributed across multiple sites and interconnected by a communications network.

[0208] The processes and logic flows described in this application can be performed by one or more programmable processors, which execute one or more computer programs to perform functions by operating on input data and generating output. Special purpose logic circuits can also be used to perform the processes and logic flows, and the device can also be implemented as a special purpose logic circuit, for example, an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0209] For example, processors suitable for executing computer programs include general-purpose microprocessors and special-purpose microprocessors, and any one or more processors of any kind of digital computer. In general, the processor will receive instructions and data from a read-only memory or a random access memory or both. The necessary elements of a computer are a processor for executing instructions and one or more memory devices for storing instructions and data. In general, the computer will also include or be operably coupled to one or more mass storage devices for storing data, such as magnetic disks, magneto-optical disks, or optical disks, to receive data from the mass storage device or to transfer data to the mass storage device, or both. However, the computer does not need to have such a device. Computer-readable media suitable for storing computer program instructions and data include various forms of non-volatile memory, media, and memory devices, including, for example, semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and CD ROM and DVD-ROM optical disks. The processor and memory can be supplemented by or incorporated into a dedicated logic circuit.

[0210] Although this patent application contains many details, these should not be interpreted as limitations on the scope of the claimed invention or the scope of what may be claimed, but should be understood as descriptions of features for specific embodiments of specific inventions. Certain features described in this patent application in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although the above-mentioned features may be described as working in certain combinations and even initially claimed as such, in some cases, one or more features from the combination may be deleted from the combination, and the combination may involve sub-combinations or variations of sub-combinations.

[0211] Similarly, although operations are described in a particular order in the drawings, this should not be understood as requiring that the operations be performed in the particular order or sequence shown, or that all of the operations shown be performed, in order to achieve the desired results. In addition, the separation of various system components in the embodiments described in this patent application should not be understood as requiring such separation in all embodiments.

[0212] Only a few implementations and examples are described, and other implementations, enhancements, and variations may be made based on what is described and illustrated in this patent application.

Claims

1. A wireless communication method, comprising: The base station sends a UE information request message to the user equipment UE, where the UE information request message includes a request for obtaining a mobility history report; as well as The base station receives a UE information response message from the UE, where the UE information response message includes the mobility history report.

2. The method according to claim 1, in, The mobility history report includes a plurality of records, The first record in the plurality of records includes a first identifier of the cell where the UE stays and a length of time the UE stays in the cell, and The second record among the multiple records includes a second identifier of the primary and secondary cell group cell PSCell where the UE stays and the length of time the UE stays in the PSCell.

3. The method according to claim 1, further comprising: The base station receives state information from the UE, the state information indicating any one or more of: a state of the UE, entry of the UE into the state, exit of the UE into the state, a severity level, or a measurement list including measurements that cannot be performed; and The base station sends the status information of the UE to the core network.

4. The method according to claim 3, wherein: The state of the UE includes a special state, a normal state, an overheat state or a power saving state.

5. The method according to claim 1, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report including multiple records, Among them, each record of the multiple records includes any one or more of the following: a cell identifier of the cell where the connection establishment failure occurs, location information of the UE when the connection establishment failure occurs, moving direction information of the UE when the connection establishment failure occurs, moving speed information of the UE when the connection establishment failure occurs, or time information when the connection establishment failure occurs.

6. The method according to claim 1, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report, in response to which the connection establishment failure report contains only one record, the one record including one or more cell identifiers of one or more cells where the connection establishment failure is located, one or more location information of the UE at the time of the connection establishment failure, and one or more time information at the time of the connection establishment failure.

7. A wireless communication method, comprising: The user equipment UE receives a UE information request message from the base station, where the UE information request message includes a request for obtaining a mobility history report; as well as The UE sends a UE information response message to the base station, where the UE information response message includes the mobility history report.

8. The method according to claim 7, in, The mobility history report includes a plurality of records, The first record in the plurality of records includes a first identifier of the cell where the UE stays and a length of time the UE stays in the cell, and The second record among the multiple records includes a second identifier of the primary and secondary cell group cell PSCell where the UE stays and the length of time the UE stays in the PSCell.

9. The method according to claim 7, further comprising: The UE sends state information to the base station, the state information indicating any one or more of: a state of the UE, entry of the UE into the state, exit of the UE into the state, a severity level, or a measurement list including measurements that cannot be performed; and The status information of the UE is also sent to the core network through the base station.

10. The method according to claim 9, wherein: The state of the UE includes a special state, a normal state, an overheat state or a power saving state.

11. The method according to claim 7, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report including multiple records, Among them, each record of the multiple records includes any one or more of the following: a cell identifier of the cell where the connection establishment failure occurs, location information of the UE when the connection establishment failure occurs, moving direction information of the UE when the connection establishment failure occurs, moving speed information of the UE when the connection establishment failure occurs, or time information when the connection establishment failure occurs.

12. The method according to claim 7, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report, in response to which the connection establishment failure report contains only one record, the one record including one or more cell identifiers of one or more cells where the connection establishment failure is located, one or more location information of the UE at the time of the connection establishment failure, and one or more time information at the time of the connection establishment failure.

13. A wireless communication device, comprising one or more processors, wherein the one or more processors are configured to cause the device to perform the following operations: Sending a UE information request message to a user equipment UE, wherein the UE information request message includes a request for obtaining a mobility history report; and A UE information response message is received from the UE, the UE information response message including the mobility history report.

14. The device according to claim 13, in, The mobility history report includes a plurality of records, The first record in the plurality of records includes a first identifier of the cell where the UE stays and a length of time the UE stays in the cell, and The second record among the multiple records includes a second identifier of the primary and secondary cell group cell PSCell where the UE stays and the length of time the UE stays in the PSCell.

15. The device according to claim 13, wherein: The one or more processors are further configured to cause the apparatus to perform the following operations: receiving state information from the UE, the state information indicating any one or more of: a state of the UE, entry of the UE into the state, exit of the UE into the state, a severity level, or a measurement list including measurements that cannot be performed; as well as Send the status information of the UE to the core network.

16. The device according to claim 15, wherein: The state of the UE includes a special state, a normal state, an overheat state or a power saving state.

17. The device according to claim 13, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report including multiple records, Among them, each record of the multiple records includes any one or more of the following: a cell identifier of the cell where the connection establishment failure occurs, location information of the UE when the connection establishment failure occurs, moving direction information of the UE when the connection establishment failure occurs, moving speed information of the UE when the connection establishment failure occurs, or time information when the connection establishment failure occurs.

18. The device according to claim 13, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report, in response to which the connection establishment failure report contains only one record, the one record including one or more cell identifiers of one or more cells where the connection establishment failure is located, one or more location information of the UE at the time of the connection establishment failure, and one or more time information at the time of the connection establishment failure.

19. A wireless communication device, comprising one or more processors, wherein the one or more processors are configured to cause the device to perform the following operations: receiving a user equipment UE information request message from a base station, the UE information request message including a request for obtaining a mobility history report; and A UE information response message is sent to the base station, where the UE information response message includes the mobility history report.

20. The device according to claim 19, in, The mobility history report includes a plurality of records, The first record in the plurality of records includes a first identifier of the cell where the UE stays and a length of time the UE stays in the cell, and The second record among the multiple records includes a second identifier of the primary and secondary cell group cell PSCell where the UE stays and the length of time the UE stays in the PSCell.

21. The device according to claim 19, wherein The one or more processors are further configured to cause the apparatus to perform the following operations: sending state information to the base station, the state information indicating any one or more of: a state of the UE, the UE entering the state, the UE exiting the state, a severity level, or a measurement list including measurements that cannot be performed; and The status information of the UE is also sent to the core network through the base station.

22. The device according to claim 21, wherein The state of the UE includes a special state, a normal state, an overheat state or a power saving state.

23. The device according to claim 19, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report including multiple records, Among them, each record of the multiple records includes any one or more of the following: a cell identifier of the cell where the connection establishment failure occurs, location information of the UE when the connection establishment failure occurs, moving direction information of the UE when the connection establishment failure occurs, moving speed information of the UE when the connection establishment failure occurs, or time information when the connection establishment failure occurs.

24. The device according to claim 19, in, The UE information request message includes a request to obtain a connection establishment failure report, and The UE information response message includes a connection establishment failure report, in response to which the connection establishment failure report contains only one record, the one record including one or more cell identifiers of one or more cells where the connection establishment failure is located, one or more location information of the UE at the time of the connection establishment failure, and one or more time information at the time of the connection establishment failure.

25. A computer readable medium having code stored thereon which, when executed by a processor, causes the processor to implement the method of any one of claims 1 to 12.

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