CN115460648B - Wireless link failure detection method, device, equipment and storage medium - Google Patents

Wireless link failure detection method, device, equipment and storage medium Download PDF

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CN115460648B
CN115460648B CN202211402133.2A CN202211402133A CN115460648B CN 115460648 B CN115460648 B CN 115460648B CN 202211402133 A CN202211402133 A CN 202211402133A CN 115460648 B CN115460648 B CN 115460648B
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message
rrc
unit
distribution unit
terminal
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CN115460648A (en
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范善翔
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Guangzhou Shiju Network Technology Co Ltd
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Guangzhou Shiju Network Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application provides a method, a device, equipment and a storage medium for detecting wireless link failure, which relate to the technical field of mobile communication, and the method comprises the following steps: when the central unit detects a triggering event triggering the radio link detection, the central unit sends an RRC message to the distribution unit; the distribution unit responds to the RRC message, sends a query message to the terminal and monitors a response message corresponding to the query message fed back by the terminal; based on the monitoring result, the distribution unit sends RRC feedback information corresponding to the RRC information to the centralized unit; and the centralized unit determines whether the wireless link fails according to the analysis result of the RRC feedback message. The application provides a more reliable detection scheme, which can effectively identify whether the wireless link connected with the terminal and the base station is invalid or not, release wireless resources in time and avoid the waste of the wireless resources.

Description

Wireless link failure detection method, device, equipment and storage medium
Technical Field
The embodiment of the application relates to the technical field of mobile communication, in particular to a method, a device, equipment and a storage medium for detecting wireless link failure.
Background
The 5G-NR (New Radio, new air interface) is a 5G standard designed based on a New air interface of OFDM (Orthogonal Frequency Division Multiplexing), and in a 5G-NR access network system, terminals of a plurality of users share Radio link resources. When a terminal is off-line, the 5G NR base station is required in the standard to be capable of quickly identifying that the wireless link of the terminal has failed and releasing wireless link resources.
The 5G NR base station includes two logic units, namely, CU (Centralized Unit) and DU (Distributed Unit), and the radio link failure detection adopted by the conventional base station manufacturer is performed by the DU, and the commonly used detection method includes: CSI (Channel State Information), SRS (Sounding Reference Signal), inactivity timer detection, and the like.
However, in practical applications, some low-cost DUs cannot realize complete CSI and SRS functions, and even in industrial applications, there is a situation that the time setting of the inactivity timer is long or even cannot be enabled, so that the base station cannot timely or even cannot recognize that a wireless link connected to the terminal has failed in some scenarios, thereby causing waste of wireless resources.
Disclosure of Invention
The embodiment of the application provides a wireless link failure detection method, a wireless link failure detection device and a wireless link failure detection storage medium, solves the problem that wireless link failure detection cannot be realized in partial scenes, provides a more reliable detection scheme, can effectively identify whether a wireless link connected between a base station and a terminal fails or not, timely releases wireless resources, and avoids waste of the wireless resources.
In a first aspect, an embodiment of the present application provides a method for detecting a radio link failure, where the method is applied to a 5G NR base station, where the 5G NR base station includes a concentration unit and a distribution unit, and the 5G NR base station is in communication connection with a terminal through a radio link, and the method includes:
when the central unit detects a trigger event triggering radio link detection, the central unit sends an RRC message to the distribution unit;
the distribution unit responds to the RRC message, sends a query message to the terminal and monitors a response message corresponding to the query message fed back by the terminal;
based on the monitoring result, the distribution unit sends RRC feedback information corresponding to the RRC information to the centralized unit;
and the centralized unit determines whether the wireless link fails according to the analysis result of the RRC feedback message.
In a second aspect, an embodiment of the present application provides a radio link failure detection apparatus, including:
a first messaging module configured to send, by the central unit, an RRC message to the distribution unit when the central unit detects a triggering event triggering radio link detection;
the second message receiving and sending module is configured to respond to the RRC message by the distribution unit, send a query message to the terminal and monitor a response message corresponding to the query message and fed back by the terminal;
a message feedback module configured to transmit, based on the monitoring result, an RRC feedback message corresponding to the RRC message to the central unit by the distribution unit;
and the failure detection module is configured to determine whether the radio link fails according to the analysis result of the RRC feedback message by the centralized unit.
In a third aspect, an embodiment of the present application provides a base station device, including:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the radio link failure detection method of the embodiments of the present application.
In a fourth aspect, embodiments of the present application further provide a storage medium storing computer-executable instructions, which when executed by a processor, are configured to perform the radio link failure detection method of the embodiments of the present application.
In the embodiment of the application, the detection on whether the wireless link fails or not is realized by adding the RRC message to the centralized unit, so that the reliability of the link failure detection is ensured, and whether the wireless link connected with the base station and the terminal fails or not can be effectively identified, thereby releasing wireless resources in time and avoiding the waste of the wireless resources; and for the condition that the centralized unit and the distributed unit come from different manufacturers, the scheme can also reduce the dependence of the centralized unit on the detection capability of a physical layer, is favorable for decoupling the centralized unit and the distributed unit, and better accords with the system design of a 5G-NR access network.
Drawings
Fig. 1 is a flowchart illustrating steps of a radio link failure detection method according to an embodiment of the present disclosure.
Fig. 2 is a flowchart illustrating steps of a distribution unit and a terminal according to an embodiment of the present application.
Fig. 3 is a flowchart illustrating steps of detecting a radio link by a centralized unit according to another embodiment of the present application.
Fig. 4 is a schematic diagram of interaction between a 5G NR base station and a terminal according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a radio link failure detection apparatus according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of a base station device according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the embodiments described herein are illustrative of the present application and are not limiting of the present application. It should be further noted that, for the convenience of description, only some of the structures associated with the present application are shown in the drawings, not all of them.
The terms "first", "second", and the like in the description and claims of the present application are used for distinguishing similar objects and are not used to describe a particular order or sequence, e.g., "first" and "second" of a first base station and a second base station are used to distinguish different wireless base stations and may be interchanged as appropriate, so that embodiments of the present application can be implemented in an order other than those illustrated or described below, and the objects distinguished by "first", "second", and the like are generally a class and do not limit the number of objects, e.g., the first object may be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The 5G NR base station is connected with the terminal of the user through establishing RRC (Radio Resource Control) connection to form a wireless link, so that wireless Resource management, control and scheduling are performed through a certain strategy and means, limited wireless network resources are fully utilized as far as possible under the condition of meeting the requirement of service quality, a planned coverage area is ensured to be reached, the service capacity and the Resource utilization rate are improved as far as possible, and the use requirement of the user terminal is met.
The wireless link failure detection method provided by the application can be applied to a 5G NR base station, the 5G NR base station comprises a Central Unit (CU) and a Distribution Unit (DU), and the wireless link failure detection is realized through information interaction between the information interaction base station and the terminal between the CU and the DU. Fig. 1 is a flowchart illustrating steps of a radio link failure detection method according to an embodiment of the present application, where the method includes the following steps:
step S110, when the central unit detects a triggering event triggering radio link detection, the central unit sends an RRC message to the distribution unit.
For the triggering event triggering the radio link detection, it may be a periodic event that the timing meets the triggering period, for example, during the operation of the base station, the central unit may start a timer to perform timing, and each time a triggering period is reached, the central unit detects that the timing of the timer reaches one triggering period, that is, it may be determined that the triggering event triggering the radio link detection is detected, and therefore, the base station may perform the radio link detection periodically.
Of course, for the triggering event triggering the radio link detection, it may also be a triggering request event meeting a preset triggering condition, where the triggering request may be sent by other modules or devices of the base station to the central unit, for example, when the distribution unit does not receive a message of the terminal within more than a default period, the distribution unit sends a triggering request to the central unit to generate the triggering request event, so that the central unit performs a corresponding operation.
When detecting a trigger event, the central unit sends an RRC message to the distribution unit, so that the distribution unit performs information interaction with the terminal. In some embodiments, the RRC message sent by the central unit to the distribution unit may carry a delivery status request, where the delivery status request is used to indicate that the receiver feeds back a delivery report to the sender.
Step S120, the distribution unit sends a query message to the terminal in response to the RRC message, and monitors a response message corresponding to the query message fed back by the terminal.
It is conceivable that the base station performs information interaction with the terminal through the distribution unit, and after the distribution unit receives the RRC message sent by the central unit, the distribution unit sends an inquiry message to the terminal to confirm whether the radio link between the terminal and the base station is failed. The response message is sent to the distribution unit after the terminal receives the query message, and the distribution unit starts monitoring the response message after the query message is sent out, so as to generate a corresponding RRC feedback message according to a monitoring result.
Step S130, based on the monitoring result, the distribution unit sends an RRC feedback message corresponding to the RRC message to the central unit.
For the monitoring of the response message, the distribution unit records a monitoring result, and adds the monitoring result to the generated RRC feedback message to feed back the result of the information interaction with the terminal to the central unit.
The query message may be a count query message or an RRC heartbeat message. The distribution unit can adopt any one of the messages as the query message to be sent to the terminal, and the byte length of the query message is small, so that the behaviors of the base station and the terminal are not influenced.
In an embodiment, taking query messages as count query messages as an example, as shown in fig. 2, fig. 2 is a flowchart of steps of a distribution unit and a terminal provided in an embodiment of the present application, and the method for detecting radio link failure further includes the following steps:
step S210, the distribution unit transmits a count inquiry message to the terminal on the RLC layer in the AM mode.
Step S220, the distribution unit starts a monitoring period timing, and if the distribution unit receives a query response message corresponding to the counting query message in the monitoring period, the distribution unit generates an RRC feedback message corresponding to the first monitoring result.
Step S230, after the monitoring period is over, if the distribution unit still does not receive the query response message, then the distribution unit generates an RRC feedback message corresponding to the second monitoring result.
It is understood that the information interaction between the distribution unit and the terminal is performed on an RLC (Radio Link Control) layer. The RLC layer, which is located above the MAC layer (medium access control sublayer), provides segmentation and retransmission services for user and control data, and each RLC entity is configured by RRC and has three operating modes according to service types: transparent Mode (TM), unacknowledged Mode (UM), and Acknowledged Mode (AM).
For the counting inquiry message, an AM mode is adopted for transmission, and the RLC layer ensures reliable data transmission. After the distribution unit sends the counting inquiry message to the terminal, the distribution unit starts the timing of a monitoring period, and because the AM mode is adopted, the terminal can feed back a response message, namely an inquiry response message, to the sender (namely the distribution unit) after receiving the counting inquiry message. Therefore, when the distribution unit receives the response message within the listening period, the distribution unit generates an RRC feedback message corresponding to the first listening result, which is supposed to indicate that the distribution unit is currently able to receive the inquiry response message, i.e. the radio link between the base station and the terminal is not failed.
In addition, if the listening period is over, the distribution unit still does not receive the query response message, that is, the distribution unit does not receive the query response message in the whole listening period, and correspondingly, the distribution unit generates an RRC feedback message corresponding to the second listening result, where it is conceivable that the second listening result is used to indicate that the distribution unit cannot receive the query response message currently, that is, the radio link between the base station and the terminal is failed.
Therefore, based on the confirmation mode, the base station can determine whether the current wireless link between the two is failed according to whether the response message of the terminal is received, and the method can more simply and effectively realize the detection of the wireless link.
Step S140, the central unit determines whether the radio link fails according to the analysis result of the RRC feedback message.
When the RRC message sent by the central unit to the distribution unit carries the delivery status request, the RRC feedback message sent by the distribution unit to the central unit may be a delivery report, and a corresponding monitoring result is added to the delivery report.
The RRC feedback message is used as a report of the monitoring result by the distribution unit, the centralized unit analyzes the RRC feedback message after receiving the distribution unit, and the centralized unit can learn the monitoring result of the response message by the distribution unit through analyzing the RRC message, so that whether the wireless link fails or not is judged.
According to the scheme, the detection on whether the wireless link fails or not is realized by adding the RRC message on the centralized unit, so that the reliability of the detection is ensured, and whether the wireless link connected with the base station and the terminal fails or not can be effectively identified, thereby releasing wireless resources in time and avoiding the waste of the wireless resources; and for the condition that the centralized unit and the distributed unit come from different manufacturers, the scheme can also reduce the dependence of the centralized unit on the detection capability of a physical layer, is favorable for decoupling the centralized unit and the distributed unit, and better accords with the system design of a 5G-NR access network.
Fig. 3 is a flowchart of a step of detecting a radio link by a central unit according to another embodiment of the present application, and as shown in fig. 3, the radio link failure detection method further includes the following steps:
step S310, the central unit parses the received delivery report to determine whether the distribution unit receives the response message.
Step S320, if the central unit determines that the distribution unit does not receive the response message, it determines that the wireless link is invalid.
It can be understood that, when the RRC message sent by the central unit to the distribution unit carries the delivery state request, the RRC feedback message sent by the distribution unit to the central unit may be a delivery report, and a corresponding monitoring result is added to the delivery report.
Therefore, corresponding to the delivery report fed back by the distribution unit, the central unit also needs to parse the delivery report to obtain the monitoring result, so as to determine whether the distribution unit receives the response message, and thus determine whether the wireless link between the base station and the terminal is failed.
For example, if the distribution unit does not receive the response message, the central unit may learn the corresponding monitoring result by analyzing the RRC message, so as to determine that the radio link between the base station and the terminal has failed, and further release the related radio link resource for use by other terminals, thereby avoiding waste of radio resources.
It should be noted that, in some embodiments, when the base station does not receive the response message of the terminal, the base station may further control the central unit to send an RRC message to the distribution unit again, and repeat the above procedure to determine whether there is a radio link failure again.
In addition, for the case of using the RRC heartbeat message as the query message, similarly, the distribution unit may send the RRC heartbeat message to the terminal in an AM mode, and wait for the terminal to feed back the response message within the listening period, that is, the transmission of the query message and the response message may be performed on the basis of the RLC layer, and does not need to be transmitted through the RRC layer. And the length of the byte occupied by the RRC heartbeat message is less than that of the counting inquiry message, so that the RRC heartbeat message can be more simplified, and can be used as a special message for detecting the wireless link failure.
Fig. 4 is a schematic diagram of interaction between a 5G NR base station and a terminal according to an embodiment of the present application, where information interaction between logic units of the base station and interaction between the logic units and the terminal are shown. The 5G NR base station comprises a concentration unit and a distribution unit, wherein the concentration unit and the distribution unit carry out information interaction, and the concentration unit and the distribution unit adopt a confirmation mode to carry out information interaction, namely the distribution unit needs to respond or feed back to a message sent by the concentration unit; similarly, the distribution unit and the terminal may also perform information interaction in a confirmation mode, so as to improve reliability of detecting whether the wireless link fails.
As shown in the figure, the central unit initiates an RRC message downlink transmission Request to the distribution unit, and carries a Delivery Status Request (Delivery Status Request) in the message. After the distribution unit receives the submit status request, the distribution unit sends a count query message (i.e., a Counter Check message) to the terminal. After receiving the counting inquiry message, the terminal feeds back an inquiry response message to the distribution unit. For the distribution unit which receives the inquiry response message fed back by the terminal, the distribution unit adds the corresponding monitoring result to the delivery report and sends the delivery report to the concentration unit, so that the concentration unit can judge whether the wireless link between the current base station and the terminal fails, and the base station can release the corresponding wireless resource after the wireless link fails.
Fig. 5 is a schematic diagram of a radio link failure detection apparatus according to an embodiment of the present application, where the apparatus is configured to execute the radio link failure detection method according to the foregoing embodiment, and has functional modules and beneficial effects corresponding to the execution method. As shown in the figure, the device specifically includes: a first messaging module 501, a second messaging module 502, a message feedback module 503, and a failure detection module 504.
Wherein the first messaging module 501 is configured to send an RRC message to the distribution unit by the concentration unit when the concentration unit detects a triggering event triggering radio link detection;
the second messaging module 502 is configured to send a query message to the terminal by the distribution unit in response to the RRC message, and monitor a response message corresponding to the query message fed back by the terminal;
the message feedback module 503 is configured to, based on the monitoring result, the distribution unit sends an RRC feedback message corresponding to the RRC message to the central unit;
the failure detection module 504 is configured to determine, by the central unit, whether the radio link fails according to a result of parsing the RRC feedback message.
According to the scheme, the first message receiving and sending module and the failure detection module serve as functional modules included in the centralized unit, the second message receiving and sending module and the message feedback module serve as functional modules included in the distribution unit, the first message receiving and sending module sends the RRC message to the second message receiving and sending module, so that when the centralized unit detects the trigger event, wireless link failure detection is started, and the effectiveness of identification on whether the wireless link fails or not is improved on the basis of a reliable transmission mode between the first message receiving and sending module and the second message receiving and sending module, wireless resources are released under the condition that the wireless link fails, and waste of the wireless resources is avoided.
On the basis of the above embodiment, the trigger events for triggering link detection include a periodic event timed to meet a trigger period and a trigger request event meeting a preset trigger condition.
On the basis of the above embodiment, the centralized unit and the distributed unit use the confirmation mode to perform information interaction.
On the basis of the above embodiments, the query message includes a counting query message or an RRC heartbeat message.
On the basis of the above embodiment, when the query message is a counting query message, the second messaging module 502 is further configured to:
the distribution unit transmits a counting inquiry message to the terminal on an RLC layer in an AM mode;
the distribution unit starts monitoring period timing, and if receiving a query response message corresponding to the counting query message in a monitoring period, the distribution unit generates an RRC feedback message corresponding to a first monitoring result;
and after the monitoring period is finished, if the distribution unit does not receive the query response message, generating an RRC feedback message corresponding to the second monitoring result.
On the basis of the above embodiments, the RRC message includes a delivery status request, where the delivery status request is used to instruct the receiver to feed back a delivery report to the sender.
Based on the foregoing embodiment, the RCC feedback message is a delivery report, and the failure detection module 504 is further configured to:
the centralized unit analyzes the received submitted report to determine whether the distributed unit monitors the response message;
and if the centralized unit determines that the distributed unit does not monitor the response message, determining that the wireless link fails.
It should be noted that, in the embodiment of the foregoing wireless link failure detection apparatus, each included functional module is only divided according to functional logic, but is not limited to the above division, as long as the corresponding function can be implemented; in addition, specific names of the functional modules are only used for distinguishing one functional module from another, and are not used for limiting the protection scope of the application.
Fig. 6 is a schematic structural diagram of a base station device according to an embodiment of the present application, as shown in the figure, the device includes a processor 601, a memory 602, an input device 603, and an output device 604, where the number of the processors 601 in the device may be one or more, and one processor 601 is taken as an example in the figure; the processor 601, the memory 602, the input device 603 and the output device 604 of the apparatus may be connected by a bus or other means, and are illustrated as being connected by a bus. The memory 602 is a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the radio link failure detection method in the embodiments of the present application. The processor 601 executes software programs, instructions and modules stored in the memory 602 so as to execute various functional applications and data processing of the device, that is, to implement the above-described radio link failure detection method.
The memory 602 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the gateway apparatus, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 602 may further include memory located remotely from the processor 601, which may be connected to the terminal device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 603 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the apparatus, such as the response message described above. The output means 604 may be used to send or display key signal outputs related to user settings and function control of the device, such as the query message described above.
The embodiments of the present application also provide a storage medium storing computer-executable instructions, which when executed by a processor, are configured to perform operations related to the method for detecting a radio link failure according to any of the embodiments of the present application.
Computer-readable storage media, including persistent and non-persistent, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of many obvious modifications, rearrangements and substitutions without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims (7)

1. A wireless link failure detection method is applied to a 5GNR base station, the 5G NR base station comprises a concentration unit and a distribution unit, and the 5GNR base station is in communication connection with a terminal through a wireless link, and the method comprises the following steps:
when the central unit detects a triggering event triggering radio link detection, the central unit sends an RRC message to the distribution unit;
the distribution unit responds to the RRC message, sends a query message to the terminal and monitors a response message which is fed back by the terminal and corresponds to the query message, and the distribution unit sends the query message to the terminal in an AM mode, wherein the query message comprises a counting query message or an RRC heartbeat message;
based on the monitoring result, the distribution unit sends an RRC feedback message corresponding to the RRC message to the concentration unit;
the centralized unit determines whether the radio link fails according to the analysis result of the RRC feedback message;
the RRC message comprises a delivery state request, wherein the delivery state request is used for indicating a receiving direction to a sender to feed back a delivery report, and the RRC feedback message is the delivery report;
the determining, by the central unit, whether the radio link fails according to the analysis result of the RRC feedback message includes:
the centralized unit analyzes the received submission report to determine whether the distributed unit receives the response message;
and if the centralized unit determines that the distributed unit does not receive the response message, the centralized unit determines that the wireless link fails.
2. The method of claim 1, wherein the triggering event for triggering the radio link detection comprises a periodic event that counts to meet a triggering period and a triggering request event that meets a preset triggering condition.
3. The method of claim 1, wherein the centralized unit and the distributed unit use an acknowledgement mode for information exchange.
4. The method of claim 1, wherein when the query message is a counting query message, the distributing unit sends the query message to the terminal in response to the RRC message, and monitors a response message corresponding to the query message fed back by the terminal, and the method comprises:
the distribution unit transmits the counting inquiry message to the terminal on an RLC layer in an AM mode;
the distribution unit starts monitoring period timing, and if the distribution unit receives a query response message corresponding to the counting query message in the monitoring period, the distribution unit generates an RRC feedback message corresponding to a first monitoring result;
and after the monitoring period is finished, if the distribution unit does not receive the query response message, generating an RRC feedback message corresponding to a second monitoring result.
5. A radio link failure detection apparatus applied to a 5G NR base station, the 5G NR base station including a concentration unit and a distribution unit, the 5G NR base station being communicatively connected to a terminal through a radio link, the apparatus comprising:
a first messaging module configured to send, by the central unit, an RRC message to the distribution unit when the central unit detects a triggering event that triggers radio link detection;
a second message transceiver module, configured to, in response to the RRC message, the distribution unit sends a query message to the terminal and monitors a response message corresponding to the query message fed back by the terminal, and the distribution unit sends the query message to the terminal in an AM mode, where the query message includes a counting query message or an RRC heartbeat message;
a message feedback module configured to, based on a monitoring result, the distribution unit send an RRC feedback message corresponding to the RRC message to the concentration unit;
a failure detection module configured to determine, by the central unit, whether the radio link fails according to a result of analyzing the RRC feedback message;
the RRC message comprises a delivery state request, wherein the delivery state request is used for indicating a receiving direction to a sender to feed back a delivery report, and the RRC feedback message is the delivery report;
the failure detection module is further configured to:
the centralized unit analyzes the received submission report to determine whether the distribution unit receives the response message;
and if the centralized unit determines that the distributed unit does not receive the response message, the centralized unit determines that the wireless link fails.
6. A base station apparatus, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by one or more of said processors, cause the one or more processors to carry out a method of radio link failure detection according to any one of claims 1-5.
7. A storage medium storing computer-executable instructions, which when executed by a processor, are configured to perform the radio link failure detection method of any of claims 1-5.
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