Method, device, equipment and storage medium for determining the cause of RRC reestablishment

Abstract

The present application provides a method, device, equipment and storage medium for determining the cause of RRC reconstruction, which relates to the field of communication technology. The method can realize automatic determination of the cause of RRC reconstruction in the problem cell. The method includes: when the RRC reconstruction belongs to a voice service, the determination device determines the problem cell where RRC reconstruction occurs; obtains signaling data and traffic statistics data of the problem cell; the signaling data is used to characterize the signal quality when the user terminal uses the voice service; the traffic statistics data is used to characterize the network performance indicators of the user terminal; and the cause of the RRC reconstruction in the problem cell is determined based on the signaling data or traffic statistics data. The present application can be used in the process of determining the cause of RRC reconstruction to automatically determine the cause of the RRC reconstruction problem, so as to optimize the user's voice perception according to the cause of the problem.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, apparatus, device, and storage medium for determining the cause of RRC reconstruction. Background Art

[0002] With the continued commercialization of voice over new radio (VONR) technology, users are increasingly concerned about the voice quality of fifth-generation mobile communication technology (5G). Optimizing voice perception with VONR has become a key research priority for operators. Drawing on experience gained from optimizing voice over long-term evolution (VOLTE) technology, VONR is particularly sensitive to the impact of radio resource control (RRC) reestablishment during user voice services. RRC reestablishment aims to restore RRC signaling connections, reduce call drops, and mitigate user perception of dropped calls.

[0003] However, the delay of RRC reconstruction can cause abnormal user perception of voice, such as swallowing words or interruptions, and in severe cases, even call drops. The existing technology improves the user's voice perception by directly optimizing the RRC reconstruction process and reducing the delay of RRC reconstruction. It does not involve determining the cause of the RRC problem and optimizing the RRC reconstruction process based on the cause of the problem. By identifying the cause of the RRC reconstruction problem, the steps that need to be optimized in the RRC reconstruction process can be located more quickly, thereby improving the user's voice perception more quickly. Therefore, how to determine the cause of the RRC reconstruction problem is a problem that needs to be solved urgently. Summary of the Invention

[0004] The present application provides a method, apparatus, device and storage medium for determining the cause of RRC re-establishment, which realizes automatic determination of the cause of RRC re-establishment in a problem cell.

[0005] In the first aspect, the present application provides a method for determining the cause of RRC reconstruction, which is applied to a reconstruction device. The method includes: when the RRC reconstruction belongs to a voice service, determining the problem cell where the RRC reconstruction occurs; obtaining signaling data and traffic statistics data of the problem cell; the signaling data is used to characterize the signal quality when the user terminal uses the voice service; the traffic statistics data is used to characterize the network performance indicators of the user terminal; based on the signaling data or the traffic statistics data, determining the cause of the RRC reconstruction in the problem cell.

[0006] The present application provides a method for determining the cause of RRC reconstruction. When the RRC reconstruction is for a voice service, the determination device determines the problem cell where the RRC reconstruction occurred, thereby obtaining the signaling data and traffic statistics data of the problem cell, and determining the problem cause of the RRC reconstruction in the problem cell based on the signaling data or traffic statistics data. This method automatically determines the cause of the RRC reconstruction in the problem cell. Compared with the existing technology, it can determine the problem cell and the cause of the problem more quickly and accurately, making up for the deficiency of the existing technology that the real problem cell cannot be obtained. This allows managers to optimize the user's voice perception in a targeted manner based on the problem cell and the cause of the problem, thereby improving the efficiency of improving user perception.

[0007] In a possible implementation, before determining the problem cell where the RRC re-establishment occurs, the method further includes: determining a service type to which the RRC re-establishment belongs.

[0008] Another possible implementation method is that the RRC reconstruction process includes a target parameter, which is used to characterize the duration of the retry for the terminal to access the cell; determining the service type to which the RRC reconstruction belongs, including: reducing the value of the target parameter from a preset duration to a first duration, and obtaining a call drop indicator at the quality of service class identifier (QCI) level; the call drop indicator includes a fifth-generation mobile communication technology service quality identifier (5G quality of service identifier, 5QI); when 5QI is the target value, determining that the service type to which the RRC reconstruction belongs is a voice service.

[0009] Another possible implementation manner is to determine the problem cell where RRC reestablishment occurs, including: reducing the value of the target parameter from a first duration to a second duration, and determining a cell having a call drop index greater than a preset threshold as a problem cell.

[0010] Another possible implementation method is to determine the service type to which the RRC reconstruction belongs, including: when the RRC reconstruction is an inter-station reconstruction, obtaining an RRC reconfiguration message; the RRC reconfiguration message includes radio link control (RLC) information; when the RLC information indicates a non-confirmation mode, determining that the service type to which the RRC reconstruction belongs is a voice service.

[0011] Another possible implementation method is to determine the problem cell where RRC reconstruction occurs, including: obtaining an RRC reconstruction request; the RRC reconstruction request includes personal computer interface (PCI) information; and determining that the cell corresponding to the PCI information in the signal coverage range of the base station closest to the reconstruction device is the problem cell.

[0012] In another possible implementation, the signaling data includes at least one of the following parameters: reference signal receiving power (RSRP) and signal to interference plus noise ratio (SINR); according to the signaling data, determining the cause of the RRC reconstruction problem in the problem cell, including: when the RSRP is less than a first threshold, determining that the cause of the problem is weak coverage; when the SINR is less than a second threshold, determining that the cause of the problem is poor SINR quality.

[0013] In another possible implementation, the traffic system data includes at least one of the following parameters: uplink noise floor, sounding reference signal (SRS) interference, last symbol interference, physical uplink shared channel (PUSCH) RSRP and tracking area (TA) distance; based on the traffic system data, determining the cause of the RRC reconstruction in the problem cell, including: when the uplink noise floor is greater than a third threshold, determining that the cause of the problem is full-band interference; when the SRS interference is greater than the third threshold, determining that the cause of the problem is SRS interference; when the last symbol interference is greater than the third threshold, determining that the cause of the problem is far-end interference; when the PUSCH RSRP is greater than a fourth threshold, determining that the cause of the problem is uplink weak coverage; when the TA distance is greater than a fifth threshold, determining that the cause of the problem is cross-area coverage.

[0014] In a second aspect, the present application provides a device for determining the cause of RRC reconstruction, which is applied to a reconstruction device. The device includes: a determination module and an acquisition module.

[0015] The determination module is used to, when the RRC reconstruction belongs to a voice service, determine the problem cell where the RRC reconstruction occurs; the acquisition module is used to obtain signaling data and traffic statistics data of the problem cell; the signaling data is used to characterize the signal quality when the user terminal uses the voice service; the traffic statistics data is used to characterize the network performance indicators of the user terminal; the determination module is also used to determine the cause of the RRC reconstruction problem in the problem cell based on the signaling data or the traffic statistics data.

[0016] In a possible implementation, the determination module is further configured to determine a service type to which the RRC reestablishment belongs.

[0017] Another possible implementation method is that the RRC reconstruction process includes a target parameter, which is used to characterize the duration of the terminal's retry to access the cell; the determination module is specifically used to reduce the value of the target parameter from a preset duration to a first duration to obtain a QCI-level call drop indicator; the call drop indicator includes 5QI; when 5QI is the target value, it is determined that the service type to which the RRC reconstruction belongs is a voice service.

[0018] In another possible implementation, the determination module is specifically configured to reduce the value of the target parameter from the first duration to the second duration, and determine that a cell having a call drop index greater than a preset threshold is a problem cell.

[0019] In another possible implementation, the determination module is specifically used to obtain an RRC reconfiguration message when the RRC reconstruction is an inter-station reconstruction; the RRC reconfiguration message includes RLC information; when the RLC information indicates a non-confirmation mode, determine that the service type to which the RRC reconstruction belongs is a voice service.

[0020] In another possible implementation, the determination module is specifically used to obtain an RRC reconstruction request; the RRC reconstruction request includes PCI information; and determine that the cell corresponding to the PCI information in the signal coverage range of the base station closest to the reconstruction device is the problem cell.

[0021] In another possible implementation, the signaling data includes at least one of the following parameters: RSRP and SINR; the determination module is specifically used to determine that the cause of the problem is weak coverage when RSRP is less than a first threshold; and determine that the cause of the problem is poor SINR quality when SINR is less than a second threshold.

[0022] In another possible implementation, the traffic statistics data includes at least one of the following parameters: uplink noise floor, SRS interference, last symbol interference, PUSCH RSRP and TA distance; the determination module is specifically used to, when the uplink noise floor is greater than a third threshold, determine that the cause of the problem is full-band interference; when the SRS interference is greater than the third threshold, determine that the cause of the problem is SRS interference; when the last symbol interference is greater than the third threshold, determine that the cause of the problem is far-end interference; when the PUSCH RSRP is greater than a fourth threshold, determine that the cause of the problem is uplink weak coverage; when the TA distance is greater than a fifth threshold, determine that the cause of the problem is cross-area coverage.

[0023] In a third aspect, the present application provides an electronic device comprising: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the electronic device implements the method of the first aspect above.

[0024] In a fourth aspect, the present application provides a computer-readable storage medium, which includes: computer software instructions; when the computer software instructions are executed in an electronic device, the electronic device implements the method of the first aspect above.

[0025] In a fifth aspect, the present application provides a computer program product. When the computer program product is run on a computer, it enables the computer to execute the steps of the relevant method described in the first aspect to implement the method of the first aspect.

[0026] The beneficial effects of the second to fifth aspects mentioned above refer to the corresponding description of the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of an application environment of a method for determining the cause of RRC reestablishment provided by this application;

[0028] Figure 2 A flowchart of a method for determining the cause of RRC reestablishment provided by this application;

[0029] Figure 3 A flowchart of another method for determining the cause of RRC reestablishment provided by this application;

[0030] Figure 4 A flowchart of another method for determining the cause of RRC re-establishment provided by this application;

[0031] Figure 5 A flowchart of another method for determining the cause of RRC re-establishment provided by this application;

[0032] Figure 6 A flowchart of another method for determining the cause of RRC re-establishment provided by this application;

[0033] Figure 7 A flowchart of another method for determining the cause of RRC re-establishment provided by this application;

[0034] Figure 8 A flowchart of another method for determining the cause of RRC re-establishment provided by this application;

[0035] Figure 9 A schematic diagram of RRC re-establishment service type identification provided by this application;

[0036] Figure 10 A schematic diagram of an RRC re-establishment to determine a problem cell provided by this application;

[0037] Figure 11 Another schematic diagram of RRC reestablishment to determine problem cells provided by this application;

[0038] Figure 12 A schematic diagram of determining the cause of RRC reestablishment provided by this application;

[0039] Figure 13 A schematic diagram of the composition of a device for determining the cause of RRC re-establishment provided by this application;

[0040] Figure 14 A schematic diagram of the composition of an electronic device provided in this application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] It should be noted that in the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in the embodiments of this application as "exemplarily" or "for example" should not be interpreted as being more preferred or advantageous than other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0043] In order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order.

[0044] According to the 3rd Generation Partnership Project (3GPP) protocol, there are three ways to trigger RRC reestablishment: (1) Handover-triggered RRC reestablishment: When the user equipment UE performs a signaling handover, the T304 timer is started. If the UE cannot complete random access to the target cell before T304 times out, the RRC reestablishment with the cause value of "handover failure" is triggered. (2) RRC reestablishment triggered by RRC reconfiguration: When the user equipment UE is in the state of security mode activated, if the reconfiguration message received cannot be matched or compatible, the reestablishment with the cause value of "reconfiguration failure" is triggered. (3) Other type of reestablishment: The causes of other type of reestablishment are generally three types: 1) The maximum number of uplink RLC retransmissions is reached; 2) Random access fails; 3) The user equipment UE loses synchronization and T310 times out.

[0045] Since the three methods of triggering RRC reconstruction mentioned above cannot directly distinguish the service type, and due to the influence of statistical rules, the current network cannot directly distinguish the service type to which RRC reconstruction belongs from the traffic system data and signaling data, resulting in the inability to implement accurate problem analysis and optimization of VONR voice perception in a targeted manner, as follows: (1) The wireless manufacturer's traffic system cannot distinguish the number of RRC reconstruction attempts as voice services or data services, resulting in the inability to conduct targeted problem analysis on voice services. (2) RRC reconstruction attempts can only be sent to the RRC reconstruction target cell, and the source side cell information cannot be directly obtained, resulting in the inability to obtain the real problem cell and insufficient optimization guidance. (3) According to the classification of the 3GPP protocol, among the three methods of triggering RRC reconstruction, other type reconstruction accounts for a high proportion in the current network statistics, about 80% or more. It is impossible to directly determine the cause of the other problem from the cause value, which affects the optimization accuracy. Among them, as an example, the proportion of the three methods of triggering RRC reconstruction in the 3GPP protocol is shown in Table 1.

[0046] Table 1

[0047]

[0048] Table 1 shows the proportion of RRC reestablishments in total voice traffic and the proportion of the three triggering methods in total RRC reestablishments. As shown in Table 1, RRC reestablishments accounted for 1.56% of all traffic. Handover failure accounted for 10.62% of all RRC reestablishments, reconfiguration failure accounted for 0.34%, and "other" accounted for 89.04% of all RRC reestablishments. Among them, "other" accounted for the highest proportion.

[0049] Therefore, how to determine the specific reason why the "other" category triggers RRC reestablishment so as to optimize the user's voice perception based on the specific reason is an urgent problem to be solved.

[0050] In summary, there is an urgent need for a method to determine the cause of the problem cell where RRC reconstruction occurs. Based on this, an embodiment of the present application provides a method for determining the cause of RRC reconstruction. In this method, when the RRC reconstruction belongs to a voice service, the determination device determines the problem cell where RRC reconstruction occurs, thereby obtaining the signaling data and voice statistics data of the problem cell, and determining the cause of the RRC reconstruction in the problem cell based on the signaling data or voice statistics data. This method realizes the automatic determination of the cause of RRC reconstruction in the problem cell. Compared with the existing technology, the problem cell and the cause of the problem can be determined faster and more accurately, which makes up for the deficiency of the existing technology that the real problem cell cannot be obtained, so that the management personnel can optimize the user's voice perception in a targeted manner based on the problem cell and the cause of the problem, thereby improving the efficiency of user perception improvement.

[0051] The method for determining the cause of RRC reestablishment provided in this application can be applied to Figure 1 In the application environment shown. Figure 1 As shown, the application environment includes: an RRC reconstruction cause determination device 101 (which may be referred to as a determination device for short), a base station device 102 and a user terminal 103, wherein the determination device 101 and the base station device 102 are interconnected, the determination device 101 and the user terminal 103 are interconnected, and the base station device 102 and the user terminal 103 are interconnected.

[0052] In some embodiments, the determining device 101 may be a server cluster consisting of multiple servers, or a single server, or a computer, or a processor or processing chip in a server or computer, etc. The embodiments of the present application do not limit the specific device form of the determining device 101. Figure 1 It is illustrated as an example that the determining device 101 is a single server.

[0053] In some embodiments, the base station device 102 may be an evolution nodeB (eNB), a next-generation nodeB (gNB), a transmission receive point (TRP), a transmission point (TP), or some other access node. Based on the size of the service coverage area provided, base stations can be further divided into macro base stations for providing macro cells, micro base stations for providing micro cells (Pico cells), and femto base stations for providing femto cells. As wireless communication technology continues to evolve, future base stations may also adopt other names.

[0054] In some embodiments, the user terminal 103 may be a device with wireless transceiver capabilities, such as a mobile phone, tablet computer, wearable device, vehicle-mounted device, augmented reality (AR) / virtual reality (VR) device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA), etc. The embodiment of the present invention does not limit the specific type of the front-end device 102. Figure 1 A mobile phone terminal is used as an example.

[0055] In some embodiments, when it is necessary to determine the cause of an RRC reconstruction problem, the determination device 101 can determine the problem cell during the RRC reconstruction process between the user terminal 103 and the base station device 102, obtain the signaling data and traffic statistics data of the problem cell, and then determine the cause of the RRC reconstruction problem based on the signaling data and traffic statistics data.

[0056] Figure 2 Schematic diagram of a method for determining the cause of RRC reestablishment provided in an embodiment of the present application. Figure 2 As shown, the method for determining the cause of RRC reestablishment provided by the present application can be implemented by the above-mentioned determination device, and specifically includes the following steps:

[0057] S201. When the RRC reestablishment belongs to a voice service, the determining device determines a problem cell where the RRC reestablishment occurs.

[0058] In some embodiments, when determining that the service type of the RRC re-establishment is a voice service, the determining device further determines a problem cell where the RRC re-establishment occurs, so as to analyze the process of the RRC re-establishment.

[0059] Exemplarily, the determining device may shorten the target parameters during the RRC reestablishment process, causing the RRC reestablishment to fail and a call drop to occur, thereby determining the problem cell based on the call drop indicator. The determining device may also obtain PCI information in the RRC reestablishment request and determine that the cell corresponding to the PCI information within the signal coverage range of the base station closest to the reestablishment device is the problem cell.

[0060] It should be understood that in the prior art, during RRC reestablishment, the RRC connection is often reestablished between the user terminal and the target cell. Therefore, the determination device cannot directly obtain source-side cell information based on the RRC reestablishment process, that is, it cannot obtain the actual problem cell. Furthermore, voice perception issues caused by the delay during RRC reestablishment will be reflected in the target cell, not directly in the problem cell. Therefore, the determination device needs to identify the problem cell of the RRC reestablishment in order to optimize voice quality for the problem cell and fundamentally resolve the voice perception issues caused by RRC reestablishment.

[0061] S202: The determination device obtains signaling data and traffic statistics data of the problem cell.

[0062] Among them, signaling data is used to characterize the signal quality when the user terminal uses voice services, and traffic statistics data is used to characterize the network performance indicators of the user terminal.

[0063] In some embodiments, after the determining device determines the problem cell where RRC reestablishment occurs, it may obtain signaling data and traffic statistics data of the problem cell, so as to analyze the cause of the problem based on the signaling data or traffic statistics data.

[0064] It should be understood that the signaling data is a signaling set when the RRC reestablishment is performed between the user terminal and the target cell of the base station, and the traffic statistics data is the statistical data of the network performance indicators collected by the network management system when the RRC reestablishment is performed.

[0065] Exemplarily, the determining device may obtain signaling data for RRC reconstruction from a database of the user terminal, and may also obtain call statistics data for RRC reconstruction from a network management system of the base station device.

[0066] S203: The determining device determines the cause of the RRC reestablishment problem in the problem cell according to the signaling data or the traffic statistics data.

[0067] In some embodiments, after the determining device acquires the signaling data and the traffic statistics data, it can determine the cause of the RRC reestablishment problem in the problem cell based on the signaling data or the traffic statistics data.

[0068] For example, since the proportion of RRC reconstruction of other categories is as high as 89.04%, the determination device needs to locate the cause of the problem for RRC reconstruction of other categories, wherein the main reasons for triggering RRC reconstruction of other categories are: maximum RLC retransmission, random access failure and UE desynchronization. These three reasons are ultimately manifested on the air interface side as weak coverage, poor SINR quality, background noise interference, weak uplink coverage and cross-zone coverage, etc. The determination device can perform multi-dimensional data cause association classification processing on the signaling data to determine whether the problem cause of RRC reconstruction is weak coverage and / or poor SINR quality. The determination device can also perform multi-dimensional data cause association classification processing on the dialogue data to determine whether the problem cause of RRC reconstruction is background noise interference and / or weak uplink coverage and / or cross-zone coverage, wherein the multi-dimensional data cause association classification is a type of multi-dimensional data cause association classification algorithm in the prior art, and the embodiments of the present application are not limited to this.

[0069] The technical solutions provided by the above embodiments bring at least the following beneficial effects: the method for determining the cause of RRC reconstruction provided by the embodiments of the present application, in which the determination device determines the problem cell where RRC reconstruction occurs when the RRC reconstruction belongs to a voice service, thereby obtaining the signaling data and traffic statistics data of the problem cell, and determining the problem cause of RRC reconstruction in the problem cell based on the signaling data or traffic statistics data. This method realizes the automatic determination of the cause of RRC reconstruction in the problem cell. Compared with the existing technology, the problem cell and the cause of the problem can be determined more quickly and accurately, making up for the deficiency of the existing technology that the real problem cell cannot be obtained, so that the management personnel can optimize the user's voice perception in a targeted manner based on the problem cell and the cause of the problem, thereby improving the efficiency of user perception improvement.

[0070] The following is a detailed description of the method for determining the cause of RRC reestablishment provided in the embodiment of the present application in combination with specific embodiments and the accompanying drawings.

[0071] like Figure 3 As shown, the method for determining the cause of RRC reestablishment provided by this application may specifically include the following steps:

[0072] S301. A determining device determines a service type to which RRC reestablishment belongs.

[0073] In some embodiments, before determining the problem cell where RRC re-establishment occurs, the determining device may also determine the service type to which the RRC re-establishment belongs. S301 specifically includes the following two possible implementations.

[0074] In a possible implementation, the RRC reestablishment process includes a target parameter, which is used to characterize the duration of the retry performed by the terminal when it intervenes in the cell, such as Figure 4 As shown, S301 can be specifically implemented as follows S401-S402:

[0075] S401: The determination device reduces the target parameter from a preset duration to a first duration to obtain a QCI-level call drop indicator.

[0076] Among them, the call drop indicators include 5QI.

[0077] In some embodiments, the determining device reduces the target parameter in the RRC reestablishment process from a preset duration to a first duration, so that a call drop occurs when the RRC reestablishment fails, thereby obtaining a QCI-level call drop indicator. The preset duration is the duration required for a normal RRC reestablishment, and the first duration is the duration of a call drop that occurs when the RRC reestablishment fails. Both the preset duration and the first duration are set by the administrator based on actual conditions and are not limited in this embodiment of the present application.

[0078] It should be understood that the target parameters include the T311 timer and the T301 timer. When the T311 timer expires, if the RRC re-establishment process is initiated due to a radio link failure or a handover failure, the noSuitableCellFound field in the radio link failure report (VarRLF-Report) is set to true; the user equipment enters the RRC_IDLE state with the release reason being "RRC connection failure". When the T301 timer expires, the user equipment UE considers that the target cell currently undergoing RRC re-establishment is unavailable and enters the RRC_IDLE state with the release reason being "RRC connection failure".

[0079] As an example, after the determining device reduces the target parameter from the preset duration to the first duration, the drop ratio of the voice service and the data service of the target cell changes as shown in Table 2:

[0080] Table 2

[0081]

[0082] Table 2 shows two types of dropped calls: voice and data. The drop rates for voice and data services before and after the adjustment are also shown, along with the difference in the drop rates between before and after the adjustment. Before the adjustment, the drop rates for voice and data were 0.82% and 1.21%, respectively. After the adjustment, the drop rates for voice and data were 1.56% and 2.48%, respectively. The difference in the drop rate for voice and data services before and after the adjustment increased by 0.74%, while the difference in the drop rate for data services increased by 1.27%.

[0083] S402: When 5QI is a target value, the determining device determines that the service type to which the RRC reestablishment belongs is a voice service.

[0084] In some embodiments, after the determination device obtains the call drop index, it can determine the service type of RRC reconstruction based on the value of 5QI in the call drop index. When 5QI is the target value, the service type of RRC reconstruction is determined to be voice service.

[0085] Exemplarily, the value of 5QI may be 1, 6, 7, 8 and 9. When the value of 5QI is 1, the service type reconstructed by RRC is voice service. When the value of 5QI is 6, 7, 8 or 9, the service type reconstructed by RRC is data service.

[0086] In another possible implementation, Figure 5 As shown, S301 can be specifically implemented as follows S501-S502:

[0087] S501. When the RRC reconfiguration is an inter-station reconfiguration, the determining device obtains an RRC reconfiguration message.

[0088] The RRC reconfiguration message includes RLC information.

[0089] In some embodiments, after the determining device detects that the RRC reconstruction is an inter-station reconstruction, it can obtain an RRC reconfiguration message sent by the base station to the user terminal during the RRC reconstruction process.

[0090] It should be understood that RRC reestablishment is divided into two categories: intra-site reestablishment and inter-site reestablishment. In the case of intra-site RRC reestablishment, the determination device can confirm the service type based on the time correspondence of the signaling during the RRC reestablishment. However, in the case of inter-site RRC reestablishment, due to the change of the cell ID cellID after the inter-site reestablishment and the large number of users in the cell, it is impossible to confirm the correlation between the previous and next time points, and thus it is impossible to identify the voice service.

[0091] S502: When the RLC information indicates an unconfirmed mode, the determining device determines that the service type to which the RRC reestablishment belongs is a voice service.

[0092] In some embodiments, after the determination device obtains the RRC reconfiguration message, it can determine the service type to which the RRC reconstruction belongs based on the RLC information in the RRC reconfiguration message. When the RLC information is in a non-confirmation mode, it is determined that the service type to which the RRC reconstruction belongs is a voice service.

[0093] Exemplarily, RLC information includes two modes: unacknowledged mode (UM mode) and acknowledged mode (AM mode), wherein voice service is UM mode and data service is AM mode. Therefore, based on the same cell ID cellID, the determination device can distinguish voice service and data service based on RLC message. As an example, determining the service type according to RLC information is as follows: Figure 9 As shown, the UUAP_RRC_RECFG signaling on the left contains RLC information (u1-UM-RLC), i.e., voice service. The UUAP_RRC_RECFG signaling on the right contains another type of RLC information (u1-AM-RLC), i.e., data service.

[0094] It should be understood that the prior art cannot determine the service type to which RRC reestablishment belongs, and thus cannot specifically optimize the voice perception of the user's voice service. Therefore, the determination device determines the service type to which RRC reestablishment belongs, which can more specifically analyze the cause of the RRC reestablishment problem in the voice service, thereby more accurately optimizing the user's voice perception.

[0095] S302: When the RRC reestablishment belongs to a voice service, the determining device determines a problem cell where the RRC reestablishment occurs.

[0096] In some embodiments, after determining the service type of the RRC reestablishment, the determining device may determine the problem cell where the RRC reestablishment occurs if the RRC reestablishment belongs to a voice service. S302 specifically includes the following two possible implementations.

[0097] In one possible implementation, the determining device reduces the target parameter in step S401 from the first duration to a second duration, and determines that a cell having a call drop index greater than a preset threshold is a problem cell. The second duration is the duration during which RRC reestablishment fails to reach the target cell and an interruption occurs when the user terminal sends RRC reestablishment signaling to the target cell. The preset threshold is used to indicate the degree of call drop in the user's voice service. The second duration and the preset threshold are set by a management personnel based on actual conditions and are not limited in this embodiment of the present application.

[0098] It should be understood that since modifying the duration of the target parameters will cause serious call drops for users, data services will not be greatly affected due to insensitive perception, but will have a greater impact on voice services. Therefore, after the determination device determines that the problem cell where RRC reconstruction occurs, it is necessary to modify the target parameters from the second duration back to the preset duration as soon as possible to ensure the normal use of the user's voice service and avoid serious damage to user perception.

[0099] As an example, the determining device reduces the target parameter from the first duration to the second duration, and determines that the problem cell is Figure 10As shown, when timer T311 and timer T301 are the preset duration (i.e., normal configuration), the RRC reconstruction process proceeds normally and is not counted as a dropped call. When timer T311 and timer T301 are the second duration (i.e., shortened timer), RRC reconstruction fails and is counted as a dropped call on the source side, thereby determining the problem cell.

[0100] In another possible implementation, Figure 6 As shown, S302 can be specifically implemented as follows S601-S602:

[0101] S601. The determination device obtains an RRC re-establishment request.

[0102] The RRC re-establishment request includes PCI information.

[0103] In some embodiments, after the determining device confirms that the service type to which the RRC reestablishment belongs is a voice service, it can obtain an RRC reestablishment request sent by the user terminal to the target cell of the base station.

[0104] S602: The determining device determines that a cell corresponding to the PCI information in a signal coverage range of a base station closest to the reconstruction device is a problem cell.

[0105] In some embodiments, after the determination device obtains the RRC reconstruction request, it determines, based on the PCI information in the RRC reconstruction request, that the cell with the same PCI information as in the RRC reconstruction request within the signal coverage range of the base station closest to the reconstruction device is the problem cell.

[0106] Exemplarily, the determining device determines the problem cell according to the PCI information such as Figure 11 As shown in FIG, the RRC reestablishment request carries the PCI information (physCellId: 0x88(136)) of the source side cell (ie, the problem cell), as shown in FIG. Figure 11 As shown, within the signal coverage range of the base station near the reconstruction device, there are two cells with PCI information of 136. The 5G base station (gNodeB) and cell identification code (cellID) of the cell closest to the reconstruction device are obtained, and the problem cell is determined based on the gNodeB and cellID.

[0107] S303: The determination device obtains signaling data and traffic statistics data of the problem cell.

[0108] Among them, signaling data is used to characterize the signal quality when the user terminal uses voice services, and traffic statistics data is used to characterize the network performance indicators of the user terminal.

[0109] For the related description of S303 above, please refer to the description of S202 above, which will not be repeated here.

[0110] S304: The determining device determines the cause of the RRC reestablishment problem in the problem cell according to the signaling data or the traffic statistics data.

[0111] In some embodiments, after the determination device obtains the signaling data and the traffic statistics data, it can determine the cause of the RRC reestablishment in the problem cell based on the signaling data or the traffic statistics data. S304 specifically includes the following two possible implementations.

[0112] In a possible implementation, the determining device determines whether the cause of the RRC reestablishment in the problem cell is related to the signal quality based on the signaling data, and the signaling data includes at least one of the following parameters: RSRP and SINR, such as Figure 7 As shown, S304 can be specifically implemented as follows S701-S702:

[0113] S701: When the RSRP is less than a first threshold, the determining device determines that the cause of the problem is weak coverage.

[0114] In some embodiments, when the RSRP in the signaling data is less than a first threshold, the determining device determines that the cause of the RRC reestablishment in the problem cell is weak coverage. The first threshold is -110 dBm and can be adjusted by the management personnel according to actual conditions. This embodiment of the present application is not limited to this.

[0115] S702: When the SINR is less than a second threshold, the determining device determines that the cause of the problem is poor SINR quality.

[0116] In some embodiments, when the SINR in the signaling data is less than a second threshold, the determining device determines that the cause of the RRC reestablishment in the problem cell is poor SINR quality. The second threshold is -3dB and can be adjusted by the management personnel according to actual conditions. This embodiment of the present application is not limited to this.

[0117] Exemplarily, the determining device determines the cause of the problem according to RSRP and SINR. Figure 12 As shown, the RSRP in UUAP_RRC_MEAS_RPRT is 0x41 (65) (greater than the first threshold), and the SINR is 0x49 (73) (greater than the second threshold). Therefore, the determination device determines that the cause of the problem of the cell is not related to weak coverage and poor SINR quality.

[0118] In another possible implementation, the determining device determines whether the cause of the RRC reestablishment in the problem cell is related to the network indicator based on the traffic statistics data, and the traffic statistics data includes at least one of the following parameters: uplink noise floor, SRS interference, last symbol interference, PUSCH RSRP and TA distance, such as Figure 8As shown, S304 can be specifically implemented as follows S801-S805:

[0119] S801: When the uplink noise floor is greater than a third threshold, the determining device determines that the cause of the problem is full-band interference.

[0120] In some embodiments, when the uplink noise floor in the traffic system data is greater than a third threshold, the determination device determines that the cause of the RRC reestablishment in the problem cell is full-band interference. The third threshold is -100 dBm and can be adjusted by management personnel based on actual conditions. This embodiment of the present application is not limited to this.

[0121] S802: When the SRS interference is greater than a third threshold, the determining apparatus determines that the cause of the problem is SRS interference.

[0122] In some embodiments, the determining device determines that the cause of the RRC reestablishment in the problem cell is SRS interference when the SRS interference in the traffic statistics data is greater than a third threshold.

[0123] S803: When the last symbol interference is greater than a third threshold, the determining device determines that the cause of the problem is far-end interference.

[0124] In some embodiments, the determining device determines that the cause of the RRC reestablishment in the problem cell is far-end interference when the last symbol interference in the traffic statistics data is greater than a third threshold.

[0125] It should be understood that the above-mentioned full-band interference, SRS interference and far-end interference all belong to background noise interference.

[0126] S804: When the PUSCH RSRP is greater than a fourth threshold, the determining device determines that the cause of the problem is weak uplink coverage.

[0127] In some embodiments, when the PUSCH RSRP in the traffic statistics data is greater than a fourth threshold, the determining device determines that the cause of the RRC reestablishment in the problem cell is weak uplink coverage. The fourth threshold is 40%, i.e., the percentage of PUSCH RSRP below -130dBm is greater than 40%. This threshold can be adjusted by management personnel based on actual conditions and is not limited in this embodiment of the present application.

[0128] S805: When the TA distance is greater than a fifth threshold, the determining device determines that the cause of the problem is out-of-area coverage.

[0129] In some embodiments, when the TA distance in the traffic statistics data is greater than a fifth threshold, the determining device determines that the cause of the RRC reestablishment in the problem cell is out of coverage. The fifth threshold is 2 km and can be adjusted by management personnel based on actual conditions. This embodiment of the present application is not limited to this.

[0130] Exemplarily, the determining device determines the corresponding problem cause according to the traffic statistics data as shown in Table 3.

[0131] Table 3

[0132]

[0133] Table 3 includes the causes categorized as: background noise interference, weak uplink coverage, and out-of-range coverage. Based on traffic statistics, the phenomenon association identification includes uplink background noise greater than -100dBm as full-band interference, SRS interference greater than -100dBm as SRS interference, last symbol interference greater than -100dBm as far-end interference, PUSCH RSRP less than -130dBm for greater than 40% of the time as poor uplink coverage, and TA distance greater than 2km as far-end coverage, or out-of-range coverage. Full-band interference, SRS interference, and far-end interference all fall under background noise interference.

[0134] It should be understood that the determining device can determine the cause of the problem in the problem cell that sent the RRC reestablishment according to the above method. The determining device can determine the proportion of various problem causes in the problem cell based on multiple voice services of multiple users in the problem cell over a period of time. As an example, the proportion of problem causes in cells A and B over a period of time is shown in Table 4.

[0135] Table 4

[0136]

[0137]

[0138] Table 4 includes the number of other-type RRC reestablishments for problem cells A and B, and the percentage of RRC reestablishment reasons. The reasons are: weak coverage, uplink coverage issues (i.e., the aforementioned weak uplink coverage), poor SINR quality, cross-zone issues (i.e., the aforementioned cross-zone coverage), and background noise interference. The number of other-type RRC reestablishments for problem cell A was 21, with weak coverage accounting for 68.20%, uplink coverage issues accounting for 10.91%, poor SINR quality accounting for 11.26%, cross-zone coverage accounting for 7.94%, and background noise interference accounting for 1.69%. The number of other-type RRC reestablishments for problem cell B was 17, with weak coverage accounting for 47.35%, uplink coverage issues accounting for 11.25%, poor SINR quality accounting for 29.76%, cross-zone coverage accounting for 10.73%, and background noise interference accounting for 0.91%.

[0139] In addition, after the determination device determines the cause of the RRC reestablishment problem in the problem cell, the management personnel can optimize the voice perception of users in the problem cell according to the cause of the problem to improve the quality of user voice perception.

[0140] The technical solutions provided by the above embodiments bring at least the following beneficial effects: the method for determining the cause of RRC reconstruction provided by the embodiments of the present application, in which the determination device determines the problem cell where RRC reconstruction occurs when the RRC reconstruction belongs to a voice service, thereby obtaining the signaling data and traffic statistics data of the problem cell, and determining the problem cause of RRC reconstruction in the problem cell based on the signaling data or traffic statistics data. This method realizes the automatic determination of the cause of RRC reconstruction in the problem cell. Compared with the existing technology, the problem cell and the cause of the problem can be determined more quickly and accurately, making up for the deficiency of the existing technology that the real problem cell cannot be obtained, so that the management personnel can optimize the user's voice perception in a targeted manner based on the problem cell and the cause of the problem, thereby improving the efficiency of user perception improvement.

[0141] Furthermore, the determination device can also pre-determine the service type to which the RRC reconstruction belongs. When the service type is a voice service, the cause of the RRC reconstruction problem is further analyzed, so that the location of the cause of the problem is directly related to the user's voice service, so as to improve the user's voice perception quality in a more targeted manner.

[0142] In an exemplary embodiment, the present application further provides a device for determining the cause of RRC re-establishment. The device for determining the cause of RRC re-establishment may include one or more functional modules for implementing the method for determining the cause of RRC re-establishment of the above method embodiment.

[0143] For example, Figure 13 A schematic diagram of the composition of a device for determining the cause of RRC reestablishment provided in an embodiment of the present application. Figure 13 As shown, the RRC re-establishment cause determination device includes: a determination module 1301 and an acquisition module 1302.

[0144] Determination module 1301 is configured to, when the RRC reestablishment is for voice services, determine the problem cell in which the RRC reestablishment occurred. Acquisition module 1302 is configured to acquire signaling data and traffic statistics data of the problem cell. The signaling data is used to characterize the signal quality of user terminals using voice services, and the traffic statistics data is used to characterize network performance indicators of user terminals. Determination module 1301 is further configured to, based on the signaling data or traffic statistics data, determine the cause of the RRC reestablishment in the problem cell.

[0145] In some embodiments, the determination module 1301 is further configured to determine the service type to which the RRC reestablishment belongs.

[0146] In other embodiments, the RRC reestablishment process includes a target parameter, which is used to represent the duration of the terminal's retry attempts to access the cell. Determination module 1301 is specifically configured to reduce the target parameter from a preset duration to a first duration, obtain a QCI-level call drop index, the call drop index including a 5QI, and determine that the service type to which the RRC reestablishment belongs is a voice service when the 5QI is the target value.

[0147] In some further embodiments, the determining module 1301 is specifically configured to reduce the target parameter from the first duration to the second duration, and determine that a cell having a call drop index greater than a preset threshold is a problem cell.

[0148] In some further embodiments, the determination module 1301 is specifically used to obtain an RRC reconfiguration message when the RRC reconstruction is an inter-station reconstruction, the RRC reconfiguration message including RLC information, and to determine that the service type to which the RRC reconstruction belongs is a voice service when the RLC information indicates a non-confirmation mode.

[0149] In some other embodiments, the determination module 1301 is specifically used to obtain an RRC reconstruction request including PCI information, and determine that the cell corresponding to the PCI information in the signal coverage range of the base station closest to the reconstruction device is a problem cell.

[0150] In some further embodiments, the signaling data includes at least one of the following parameters: RSRP and SINR. The determination module 1301 is specifically configured to determine that the cause of the problem is weak coverage when RSRP is less than a first threshold; and determine that the cause of the problem is poor SINR quality when SINR is less than a second threshold.

[0151] In some further embodiments, the traffic statistics data includes at least one of the following parameters: uplink noise floor, SRS interference, last symbol interference, PUSCH RSRP, and TA distance. The determination module 1301 is specifically configured to, when the uplink noise floor is greater than a third threshold, determine that the cause of the problem is full-band interference; when the SRS interference is greater than the third threshold, determine that the cause of the problem is SRS interference; when the last symbol interference is greater than the third threshold, determine that the cause of the problem is far-end interference; when the PUSCH RSRP is greater than a fourth threshold, determine that the cause of the problem is uplink weak coverage; and when the TA distance is greater than a fifth threshold, determine that the cause of the problem is cross-area coverage.

[0152] In an exemplary embodiment, the present application also provides an electronic device, which may be the device for determining the cause of RRC re-establishment in the above method embodiment. Figure 14 This is a schematic diagram of the composition of an electronic device provided in an embodiment of the present application. Figure 14As shown, the electronic device may include: a processor 1401 and a memory 1402; the memory 1402 stores instructions executable by the processor 1401; when the processor 1401 is configured to execute the instructions, the electronic device or network device or manager implements the method described in the aforementioned method embodiment.

[0153] In an exemplary embodiment, the present application also provides a computer-readable storage medium having computer program instructions stored thereon; when the computer program instructions are executed by a computer, the computer implements the method described in the aforementioned embodiment. The computer-readable storage medium can be a non-transitory computer-readable storage medium, for example, a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0154] In an exemplary embodiment, the present application also provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related method steps to implement the method for determining the cause of RRC re-establishment in the above-mentioned embodiment.

[0155] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for determining the cause of radio resource control (RRC) re-establishment, applied to a re-establishment device, characterized in that: The method comprises: In the case where the RRC reestablishment is for voice services, determining a problem cell where the RRC reestablishment occurs; Acquiring signaling data and traffic statistics data of the problem cell; the signaling data is used to characterize the signal quality of the user terminal when using the voice service; the traffic statistics data is used to characterize the network performance index of the user terminal; Determining a cause of the RRC reestablishment in the problem cell according to the signaling data or the traffic statistics data; The signaling data includes at least one of the following parameters: a reference signal received power (RSRP) and a signal to interference plus noise ratio (SINR); and determining, based on the signaling data, a cause of the RRC reestablishment problem in the problem cell, including: When the RSRP is less than a first threshold, determining that the problem cause is weak coverage; When the SINR is less than a second threshold, determining that the problem is caused by poor SINR quality; The traffic statistics data includes at least one of the following parameters: uplink noise floor, sounding reference signal (SRS) interference, last symbol interference, physical uplink shared channel (PUSCH) RSRP, and tracking area (TA) distance; and determining, based on the traffic statistics data, a cause of the RRC reestablishment problem in the problem cell, including: When the uplink noise floor is greater than a third threshold, determining that the cause of the problem is full-band interference; When the SRS interference is greater than the third threshold, determining that the cause of the problem is SRS interference; When the last symbol interference is greater than the third threshold, determining that the cause of the problem is far-end interference; When the PUSCH RSRP is greater than a fourth threshold, determining that the problem cause is uplink weak coverage; When the TA distance is greater than a fifth threshold, it is determined that the cause of the problem is out-of-area coverage.

2. The method according to claim 1, characterized in that Before determining the problem cell where the RRC reestablishment occurs, the method further includes: Determine the service type to which the RRC reestablishment belongs.

3. The method according to claim 2, characterized in that The RRC reestablishment process includes a target parameter, which is used to represent the duration of the terminal's retry attempts to access the cell; The determining the service type to which the RRC reestablishment belongs includes: Reducing the value of the target parameter from the preset duration to the first duration, and obtaining a call drop indicator of a quality of service level identifier (QCI); The call drop indicator includes the fifth generation mobile communication technology service quality indicator 5QI; When the 5QI is a target value, it is determined that the service type to which the RRC reconstruction belongs is a voice service.

4. The method according to claim 3, characterized in that The determining the problem cell where the RRC reestablishment occurs includes: The value of the target parameter is reduced from the first duration to a second duration, and a cell whose call drop index is greater than a preset threshold is determined as the problem cell.

5. The method according to claim 2, characterized in that The determining the service type to which the RRC reestablishment belongs includes: In a case where the RRC re-establishment is an inter-station re-establishment, obtaining an RRC reconfiguration message; the RRC reconfiguration message includes radio link control RLC information; In a case where the RLC information indicates an unconfirmed mode, it is determined that the service type to which the RRC reestablishment belongs is a voice service.

6. The method according to claim 1, characterized in that The determining the problem cell where the RRC reestablishment occurs includes: Obtaining an RRC reconstruction request; the RRC reconstruction request includes peripheral interconnection standard PCI information; Determine that the cell corresponding to the PCI information in the signal coverage range of the base station closest to the reconstruction device is the problem cell.

7. A device for determining the cause of RRC re-establishment, applied to a re-establishment device, characterized in that: The device includes: a determination module and an acquisition module; The determining module is configured to, when the RRC reestablishment belongs to a voice service, determine a problem cell in which the RRC reestablishment occurs; The acquisition module is used to obtain signaling data and traffic statistics data of the problem cell; the signaling data is used to characterize the signal quality of the user terminal when using the voice service; the traffic statistics data is used to characterize the network performance index of the user terminal; The determining module is further configured to determine, based on the signaling data or the traffic statistics data, a cause of the RRC reestablishment problem in the problem cell; The signaling data includes at least one of the following parameters: RSRP and SINR; the determining module is specifically configured to, when the RSRP is less than a first threshold, determine that the cause of the problem is weak coverage; when the SINR is less than a second threshold, determine that the cause of the problem is poor SINR quality; The traffic statistics data includes at least one of the following parameters: uplink noise floor, SRS interference, last symbol interference, PUSCH RSRP and TA distance; the determination module is specifically used to, when the uplink noise floor is greater than a third threshold, determine that the cause of the problem is full-band interference; when the SRS interference is greater than the third threshold, determine that the cause of the problem is SRS interference; when the last symbol interference is greater than the third threshold, determine that the cause of the problem is far-end interference; when the PUSCH RSRP is greater than a fourth threshold, determine that the cause of the problem is uplink weak coverage; when the TA distance is greater than a fifth threshold, determine that the cause of the problem is cross-zone coverage.

8. The device according to claim 7, characterized in that The determining module is further configured to determine the service type to which the RRC reestablishment belongs.

9. The device according to claim 8, characterized in that The RRC reconstruction process includes a target parameter, which is used to characterize the duration of the terminal's retry to access the cell; the determination module is specifically used to reduce the value of the target parameter from a preset duration to a first duration to obtain a QCI-level call drop index; the call drop index includes 5QI; when the 5QI is the target value, it is determined that the service type to which the RRC reconstruction belongs is a voice service.

10. The device according to claim 9, characterized in that The determining module is specifically configured to reduce the value of the target parameter from the first duration to a second duration, and determine that the cell whose call drop index is greater than a preset threshold is the problem cell.

11. The device according to claim 8, characterized in that The determination module is specifically used to, when the RRC reconstruction is an inter-station reconstruction, obtain an RRC reconfiguration message; the RRC reconfiguration message includes RLC information; when the RLC information indicates a non-confirmation mode, determine that the service type to which the RRC reconstruction belongs is a voice service.

12. The device according to claim 7, characterized in that The determination module is specifically configured to obtain an RRC reconstruction request; the RRC reconstruction request includes PCI information; and determine that a cell corresponding to the PCI information in a signal coverage range of a base station closest to the reconstruction device is the problem cell.

13. An electronic device, characterized in that: The electronic device includes: a processor and a memory; The memory stores instructions executable by the processor; When the processor is configured to execute the instructions, the electronic device implements the method according to any one of claims 1 to 6.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium includes: computer software instructions; When the computer software instructions are executed in an electronic device, the electronic device is enabled to implement the method according to any one of claims 1 to 6.

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