WO2022193111A1 - Abnormality recovery method and apparatus, and base station and computer storage medium - Google Patents

Abstract

The present application provides an abnormality recovery method and apparatus, and a base station and a computer storage medium. The method comprises: detecting, in real time, whether each physical cell is in an abnormal state; determining a corresponding target physical cell for a detected abnormal physical cell, wherein the target physical cell is in a normal state and has the same physical cell identifier as that of the corresponding abnormal physical cell, and the abnormal physical cell is each physical cell that is detected to be in an abnormal state; and migrating a communication service of the abnormal physical cell to the corresponding target physical cell. By means of this solution, when a physical cell is in an abnormal state, a communication service of the abnormal physical cell can be migrated to a target physical cell, and communication of the abnormal physical cell is supported via hardware and a link of the target physical cell, such that without adding a redundant device, the problem of a terminal of the physical cell being disconnected from a network due to an abnormality of associated hardware and an associated link is solved.

Description

Abnormal repair method, device, base station and computer storage medium technical field

The present invention relates to the field of communication technologies, and in particular, to an abnormality repairing method, device, base station and computer storage medium.

Background technique

A base station is an important communication facility in mobile communication. A base station may include a centralized unit, a radio communication unit, and several hardware (such as a distribution unit and a baseband boards) and links for connection (such as midhaul links and fronthaul links).

The coverage of a base station is generally divided into multiple physical cells, and the radio communication unit can receive and send the uplink data and downlink data of the physical cell through the wireless channel corresponding to each physical cell, and transmit the uplink data and downlink data of the physical cell through the associated hardware and The link and the centralized unit carry out the interaction of uplink data and downlink data, so that the terminal of the physical cell can access the wireless network.

In order to improve the reliability of the base station and solve the problem that the above-mentioned part of the hardware or link is abnormal during the operation of the base station, the terminal of the corresponding physical cell is disconnected from the network. Currently, the base station is generally equipped with redundant hardware and links as backups. These redundant hardware and links will obviously increase the construction cost of the base station, which is not conducive to the development of mobile communications.

SUMMARY OF THE INVENTION

Based on the above problems in the prior art, the present application provides an abnormality repair method, apparatus, base station and computer storage medium, so as to provide a highly reliable mobile communication solution that does not depend on redundant equipment.

A first aspect of the present application provides an abnormality repair method, including:

Real-time detection of whether each physical cell is in an abnormal state;

Determine a corresponding target physical cell for the abnormal physical cell; wherein, the target physical cell is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell; the abnormal physical cell refers to each detected physical cell. A physical cell in an abnormal state;

The communication service of the abnormal physical cell is migrated to the corresponding target physical cell.

Optionally, the real-time detection of whether each physical cell is in an abnormal state includes:

Real-time detection of whether the hardware and link between the centralized unit and the radio communication unit in the base station are in an abnormal state;

Wherein, if it is detected that any hardware or link between the centralized unit and the radio communication unit is in an abnormal state, it is detected that the physical cell associated with the hardware or link in the abnormal state is in an abnormal state.

Optionally, determining a target physical cell for the abnormal physical cell includes:

Identifying at least one physical cell that has the same physical cell identity as the abnormal physical cell and is in a normal state as a candidate physical cell;

According to a preset selection strategy, one candidate physical cell is selected from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell.

Optionally, according to a preset selection strategy, selecting one candidate physical cell from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell, including:

From at least one of the candidate physical cells, the candidate physical cell with the lightest load is selected as the target physical cell corresponding to the abnormal physical cell.

Optionally, migrating the communication service of the abnormal physical cell to the corresponding target physical cell includes:

The uplink data and downlink data of the abnormal physical cell are transmitted through the hardware and link associated with the target physical cell.

A second aspect of the present application provides an abnormality repair device, comprising:

A detection unit, used for real-time detection of whether each physical cell is in an abnormal state;

a determining unit, configured to determine a corresponding target physical cell for the abnormal physical cell; wherein the target physical cell is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell; the abnormal physical cell refers to Each detected physical cell in an abnormal state;

The relocation unit is configured to relocate the communication service of the abnormal physical cell to the corresponding target physical cell.

Optionally, when the detection unit detects in real time whether each physical cell is in an abnormal state, it is specifically used for:

Real-time detection of whether the hardware and link between the centralized unit and the radio communication unit in the base station are in an abnormal state;

Wherein, if it is detected that any hardware or link between the centralized unit and the radio communication unit is in an abnormal state, it is detected that the physical cell associated with the hardware or link in the abnormal state is in an abnormal state.

Optionally, when the determining unit determines a target physical cell for the abnormal physical cell, it is specifically used for:

Identifying at least one physical cell that has the same physical cell identity as the abnormal physical cell and is in a normal state as a candidate physical cell;

According to a preset selection strategy, one candidate physical cell is selected from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell.

Optionally, when the determining unit selects one candidate physical cell from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell according to a preset selection strategy, it is specifically used for:

From at least one of the candidate physical cells, the candidate physical cell with the lightest load is selected as the target physical cell corresponding to the abnormal physical cell.

Optionally, when the migrating unit migrates the communication service of the abnormal physical cell to the corresponding target physical cell, it is specifically used for:

The uplink data and downlink data of the abnormal physical cell are transmitted through the hardware and link associated with the target physical cell.

A third aspect of the present application provides a base station, including:

one or more processors;

memory on which one or more programs are stored;

When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the exception repair method provided in any one of the first aspect of this application.

A fourth aspect of the present application provides a computer storage medium for storing a computer program, and when the computer program is executed, it is specifically used to implement the abnormality repair method provided in any one of the first aspect of the present application.

The present application provides an abnormality repairing method, device, base station and computer storage medium. The method includes: detecting in real time whether each physical cell is in an abnormal state; configuring a corresponding target physical cell for the detected abnormal physical cell; the target physical cell It is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell; the abnormal physical cell refers to each detected physical cell in an abnormal state; the communication service of the abnormal physical cell is migrated to the corresponding target physical cell . This solution can migrate the communication services of the abnormal physical cell to the target physical cell when the physical cell is in an abnormal state, and support the communication of the abnormal physical cell through the hardware and link of the target physical cell, so as to solve the problem without adding redundant equipment. The problem that the terminal of the physical cell is disconnected from the network caused by the abnormality of the associated hardware and link.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:

1 is a schematic diagram of a mobile Internet system provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a base station provided by an embodiment of the present application;

3 is a flowchart of an abnormality repair method provided by an embodiment of the present application;

4 is a schematic structural diagram of an abnormality repair device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a centralized unit of a base station according to an embodiment of the present application.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

In order to facilitate the understanding of the abnormality repair method provided by the present application, the following first describes the terms involved in the method provided by the present application with reference to the accompanying drawings.

Physical cell and physical cell identity. Please refer to FIG. 1. FIG. 1 is a schematic diagram of a mobile Internet system implemented by using communication satellites. This type of system mainly consists of base stations and communication satellites operating in orbit. A base station can be connected to one or more satellites through a wireless channel (i.e., the feeder link shown in Figure 1). As shown in Figure 1, a satellite can transmit multiple beams (the beam is equivalent to the user link shown in Figure 1, which can be understood as the electromagnetic wave emitted by the satellite in a specific direction), and each beam will cover a certain area on the ground, The ground area covered by a beam emitted by a communication satellite is a physical cell.

In the networking stage after startup, the base station will configure a physical cell identifier (Physical Cell Identifier, PCI) for each physical cell of the corresponding communication satellite.

The role of PCI includes:

On the one hand, for any physical cell X, the base station generates a corresponding synchronization signal according to the PCI of the physical cell X, and according to the PCI of the physical cell X, the downlink data of the physical cell (referring to the downlink data sent from the base station to the terminal located in the physical cell X) data) is scrambled, that is, the downlink data and the scramble code corresponding to the PCI are calculated according to the preset calculation method to obtain the downlink data after scramble processing, and finally the data signal and physical The synchronization signal of cell X is sent as the beam signal of physical cell X to the communication satellite through the feeder link, and the communication satellite then sends the received beam signal to physical cell X, thus completing the transmission of downlink data to the terminal located in physical cell X the process of.

On the other hand, the terminal located in the physical cell X can generate a synchronization signal (generated according to the PCI of the physical cell X) and a data signal (carrying the scrambled uplink data) according to the processing method of the downlink data by the base station. The beam signal is sent to the communication satellite through the user link, and the communication satellite sends the beam signal to the base station through the feeder link, thereby realizing the transmission of uplink data (referring to the data sent from the terminal to the base station).

All in all, between the base station and the terminal located in the physical cell, the communication satellite is used as the relay device, and the data exchange is realized through the radio signal (or electromagnetic wave) carrying the uplink data or the downlink data, so that the mobile terminal can access the Internet. The physical cell identifier PCI determines how the base station and the terminal generate radio signals that carry data, and how to parse the data carried from the radio signals.

The above-mentioned terminals may be installed on aircraft, automobiles, ships and other large mechanical equipment, airborne communication terminals, vehicle communication terminals and shipborne communication terminals.

For the structure of the base station in the mobile Internet system shown in FIG. 1 , reference may be made to FIG. 2 . As shown in Figure 2, the base station may include a centralized unit (Central Unit, CU), multiple distributed units (Distributed Unit, DU, set the number to be M), each DU can be installed with multiple baseband boards (BPB), Each baseband board is uniquely associated with one physical cell. The DU and the CU are connected through multiple mid-transmission links (which can be understood as lines that transmit data, and the number is the same as the number of DUs), and the data received by the DU can be distributed to each baseband board. Several distribution units are also connected to radio communication units (Radio Units, RUs) through multiple fronthaul links (which can be understood as lines for transmitting data, and the number is set as L), and a base station may include a radio communication unit, which is in turn It is connected to the radio frequency unit (Radio Frequency) through an antenna feeder link (which can be understood as a line for transmitting data), and the radio frequency unit receives and transmits the aforementioned beam signal to the communication satellite through the antenna of the base station. The above-mentioned units and the baseband board may be collectively referred to as the hardware of the base station.

The centralized unit CU is used to control the work of other units and to perform data interaction between the base station and other base stations. The baseband board is configured to perform scramble processing on downlink data of the physical cell according to the PCI of the associated physical cell, and descramble the scrambled uplink data sent by the terminal of the physical cell to the base station. The descrambled uplink data is transmitted to the CU through the intermediate transmission link of the DU where the baseband board is located, and the scrambled downlink data obtained by the scramble processing is transmitted to the RU through the front transmission link.

One fronthaul link may be used to transmit scrambled downlink data and scrambled uplink data of one or more physical cells, that is, one fronthaul link may be associated with multiple physical cells.

The RU is divided into multiple radio frequency channels. Each radio frequency channel uniquely corresponds to a physical cell. The radio frequency channel is used to generate a corresponding beam signal according to the scrambled downlink data of the corresponding physical cell. The beam signal carrying the downlink data is sent by the RF channel. After power amplification and frequency modulation, it is sent to communication satellites. In addition, the radio frequency channel of the RU is also used to read the scrambled uplink data carried by the beam signal from the beam signal of the physical cell received by the base station, and transmit it to the baseband board of the DU through the fronthaul link.

Through the structure and working principle of the above-mentioned mobile Internet system and base station, it can be found that if the hardware of the base station (such as the distribution unit and the baseband board installed in the distribution unit) or the link (such as the fronthaul link and the midhaul link) fails , will cause the physical cells associated with these hardware or links to be in an abnormal state, so that the terminals located in the abnormal physical cells (referring to the physical cells in the abnormal state) cannot exchange data with other devices in the Internet through the base station. The terminals of the physical cell are disconnected from the Internet (abbreviated as offline). In order to solve the problem that the terminal located in the abnormal physical cell is disconnected from the network caused by the failure of the hardware or link of the base station, and improve the reliability of the mobile Internet system, the present application provides an abnormal repair method, which is used for timely repairing when an abnormal physical cell occurs. The communication service of the abnormal physical cell is restored, thereby solving the problem that the terminal of the abnormal physical cell is disconnected from the network.

The abnormality repair method provided by any embodiment of the present application may be applicable to a base station that centrally manages more physical cells, or a gateway station that manages more physical cells in a satellite communication system.

Referring to FIG. 3 , the abnormality repair method provided by the embodiment of the present application may include the following steps:

First of all, it should be noted that the execution subject of the abnormality repair method provided by the embodiment of the present application may be considered as the centralized unit CU in the base station.

S301. Detect in real time whether each physical cell is in an abnormal state.

If it is detected that at least one physical cell is in an abnormal state, that is, if it is detected that there is at least one abnormal physical cell, step S302 is executed.

If it is detected that each physical cell is in a normal state, that is, it is found that there is no abnormal physical cell currently, step S301 is continued until at least one abnormal physical cell is detected.

As mentioned above, if a physical cell is in an abnormal state, or the physical cell is an abnormal physical cell, it can be understood that the hardware or link associated with the physical cell in the base station is faulty, resulting in the uplink data of the terminal in the physical cell. Other devices that cannot be sent to the Internet through the base station, and cannot receive the downlink data sent by other devices on the Internet to the terminal of the physical cell through the base station, in other words, the terminal of the physical cell is disconnected from the network, or the terminal of the physical cell is disconnected. Communication services are interrupted.

In the method provided by this application, the hardware associated with a physical cell includes:

A baseband board located on the distribution unit and used for performing scramble processing on the downlink data of the physical cell and descrambling processing on the scrambled uplink data of the physical cell, and the distribution to which the baseband board associated with the physical cell belongs unit DU.

Links associated with a physical cell, including:

located between the RU and the DU associated with the physical cell, and used to transmit the scrambled uplink data and the scrambled downlink data of the physical cell on the fronthaul link, and between the CU and the DU associated with the physical cell, The medium transmission link used to transmit the uplink data and downlink data of the physical cell.

One fronthaul link can be used to transmit the scrambled uplink data and the scrambled downlink data of multiple physical cells. Therefore, one fronthaul link can be associated with multiple physical cells at the same time.

Similarly, a mid-haul link is used to transmit uplink data and downlink data of multiple physical cells associated with one DU, so one mid-haul link can be associated with multiple physical cells at the same time.

To sum up, the real-time detection of whether each physical cell is in an abnormal state described in step S301 can be performed by real-time detection of the above-mentioned hardware (including the DU and the baseband board installed in the DU) and links (including the midhaul link and the fronthaul link). road) whether there is a fault (or whether it is in an abnormal state).

Therefore, the implementation of step S301 may be:

It is detected in real time whether every hardware (including DU and baseband board) and every link (including fronthaul link and midhaul link) located between the centralized unit and the radio communication unit in the base station is faulty.

If any piece of hardware or any link between the central unit and the radio communication unit is detected to be faulty, it can be determined that the physical cell associated with the faulty hardware or link is in an abnormal state.

For the detection of the fronthaul link and the midhaul link, the CU can implement the link detection signal of the corresponding link. If the CU does not receive a response within the preset time after sending the link detection signal through a link, it can It is determined that the corresponding link is faulty.

Each DU of the base station will periodically send a heartbeat signal to the CU at a certain period during normal operation. Therefore, when the CU performs step S301, it can detect in real time whether it has received the heartbeat signal periodically sent by each DU. If the heartbeat signal of the DU is not sent regularly, it can be determined that the DU is faulty.

Each baseband board of the DU will have a running status flag, which is used to indicate whether the baseband board is currently running normally. Whether the baseband board is faulty.

After detecting the abnormal physical cell, the CU can further query the radio frequency channel corresponding to the abnormal physical cell from the RU.

S302. Determine a corresponding target physical cell for the abnormal physical cell.

The target physical cell is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell.

It should be noted that, step S302 is to determine a corresponding target physical cell for each abnormal physical cell detected in step S301. When multiple abnormal physical cells are detected in step S301, one target physical cell may simultaneously correspond to multiple abnormal physical cells.

In the mobile Internet system to which the method provided by the embodiment of the present application is applied, the base station performs physical cell networking in a single-cell networking manner, and in the networking stage, multiple physical cells are configured with the same physical cell identifier. That is to say, one physical cell identity may correspond to multiple physical cells at the same time.

In general, the strategy for configuring physical cell identifiers may be to preferentially configure the same physical cell identifier for intra-frequency physical cells and configure different physical cell identifiers for inter-frequency physical cells. On this basis, the number of corresponding physical cells is less than or a PCI combination equal to a preset number threshold, thereby ensuring that the number of physical cells corresponding to each PCI is greater than the number threshold.

For example, if the number threshold is set to 5, after the initial configuration of PCI, assuming that the number of physical cells corresponding to PCI-1 is 3 and the number of physical cells corresponding to PCI-2 is 4, the physical cells corresponding to PCI-1 and The physical cells corresponding to PCI-2 are merged, and the same PCI is configured for the seven physical cells. For example, the PCI of the seven physical cells can be determined as PCI-1. In other words, it is ensured that each physical cell has at least four physical cells with the same PCI as the physical cell.

The reason for configuring the physical cell identifier in this way is that the repair method provided by the present application mainly migrates the communication services of the abnormal physical cell to the target physical cell that has the same PCI as the abnormal physical cell and is in a normal state. To quickly restore the communication service of the abnormal physical cell. Therefore, it is necessary to adopt the above-mentioned method of configuring PCI to ensure that every time an abnormal physical cell is detected, a target physical cell that satisfies the above conditions can be found for each abnormal physical cell.

The specific execution process of step S302 may include:

For each abnormal physical cell, at least one physical cell that has the same PCI as the abnormal physical cell and is in a normal state is identified as a candidate physical cell of the abnormal physical cell, and then according to the preset selection strategy, from the identified physical cells One candidate physical cell is selected as the target physical cell corresponding to the abnormal physical cell from among the at least one candidate physical cell.

The first selection strategy may be to obtain the current load of each candidate physical cell, and then select the candidate physical cell with the lightest load as the target physical cell corresponding to the abnormal physical cell.

The second selection strategy may be to obtain the current communication quality of each candidate physical cell, and select the candidate physical cell with the best communication quality as the target physical cell corresponding to the abnormal physical cell.

For the first selection strategy, various indicators can be used to measure the load degree of a physical cell. For example, the amount of data to be transmitted per unit time of the physical cell can be detected, and the larger the amount of data to be transmitted per unit time, the heavier the load of the physical cell, and the lighter the load otherwise.

It is also possible to detect the number of terminals accessing the physical cell (which can be understood as the number of terminals located in the physical cell), the amount of time-frequency resources occupied by each terminal that is accessed, and convert the two according to the preset conversion formula. The index is converted into the load score of the physical cell, where the more terminals that access the physical cell, the higher the load score of the physical cell and the heavier the load; the more time-frequency resources each terminal occupies, the more high, the higher the load score of the physical cell, the heavier the load.

For the second selection strategy, the correct rate of data of a physical cell in the communication process can be used to reflect the communication quality of the physical cell. The higher the correct rate, the better the communication quality of the physical cell. The worse the quality.

By setting different selection strategies, the target physical cell can be selected according to the needs of the abnormal physical cell when the communication service of the abnormal physical cell is restored. One selection strategy selects the target physical cell. If an abnormal physical cell requires the best possible communication quality, the target physical cell can be selected according to the second selection strategy.

Further, when there are multiple abnormal physical cells corresponding to the same PCI among the multiple abnormal physical cells detected in step S301, the process of determining the target physical cell for these abnormal physical cells corresponding to the same PCI may be:

First, it is assumed that there are K physical cells, and their physical cell identifiers are all PCI-N. In step S301, it is detected that among the K physical cells, X physical cells are abnormal physical cells, and Y physical cells are normal physical cells. (ie a physical cell in a normal state, X+Y=K).

When performing step S302, when determining the corresponding target physical cells for the X abnormal physical cells, firstly, the Y normal physical cells may be sorted according to the degree of load, the lighter load is first, and the heavier load is last. In addition, The X abnormal physical cells are also sorted according to the degree of load when they are in a normal state.

After the sorting is completed, if X is less than or equal to Y, the first X normal physical cells are selected from the sorted Y normal physical cells, and each normal physical cell is determined as the target physical cell of the abnormal physical cell at the corresponding location. That is to say, among these physical cells corresponding to PCI-N, the normal physical cell with the lightest load is determined as the original abnormal physical cell with the heaviest load, and the normal physical cell with the second lightest load is determined as the original abnormal physical cell. The abnormal physical cell with the second heaviest load, and so on.

If X is greater than Y, for the first Y abnormal physical cells in the sorted X abnormal physical cells, the corresponding target physical cells are determined one by one according to the method when X is less than or equal to Y, and then the remaining undetermined target physical cells are determined one by one. In the abnormal physical cells of the physical cells, select the first Y abnormal physical cells, repeat the method when X is less than or equal to Y to determine the corresponding target physical cells one by one, and so on, until each abnormal physical cell has a corresponding target up to the physical area. It can be found that when X is greater than Y, one target physical cell may correspond to multiple abnormal physical cells.

S303. Migrate the communication service of the abnormal physical cell to the corresponding target physical cell.

Step S303 can be understood as transmitting uplink data and downlink data of the abnormal physical cell through the hardware and link associated with the target physical cell.

The method for migrating a communication service will be described below from two aspects of transmission of uplink data and transmission of downlink data.

In the first aspect, for uplink data (that is, data sent from the terminal to the base station), migrating the communication service of the abnormal physical cell to the corresponding target physical cell may include:

The centralized unit CU sends a first control instruction to the radio communication unit RU, where the first control instruction carries the radio frequency channel associated with the abnormal physical cell and the radio frequency channel associated with the corresponding target physical cell. After receiving the first control instruction, the RU sends the scrambled uplink data output from the radio frequency channel of the abnormal physical cell and the scrambled uplink data output from the radio frequency channel of the target physical cell through the fronthaul chain associated with the target physical cell. route to the DU associated with the target physical cell.

On the other hand, the CU sends the second control instruction to the baseband board associated with the target physical cell, thereby controlling the baseband board of the target physical cell to be used for the scrambled uplink data of the target physical cell and the scrambled data of the abnormal physical cell at the same time. The uplink data is descrambled, and the uplink data of the target physical cell and the uplink data of the abnormal physical cell are sent to the centralized unit CU together through the intermediate transmission link associated with the target physical cell.

In this way, the uplink data of the abnormal physical cell can be transmitted to the centralized unit CU through the hardware and links associated with the target physical cell, and then transmitted to other devices on the Internet through the centralized unit CU.

The above processing method can be considered as combining the uplink data of the abnormal physical cell with the uplink data of the corresponding target physical cell.

In the second aspect, for downlink data (that is, data sent from the base station to the terminal), migrating the communication service of the abnormal physical cell to the corresponding target physical cell may include:

The CU sends the downlink data of the abnormal physical cell and the downlink data of the target physical cell together to the DU associated with the target physical cell through the intermediate link associated with the target physical cell, and controls the association of the target physical cell through the aforementioned second control instruction. The baseband board scrambles the downlink data of the target physical cell and the downlink data of the abnormal physical cell together to obtain the scrambled downlink data, and the scrambled downlink data of the abnormal physical cell and the downlink data of the target physical cell are scrambled. The scrambled downlink data is sent to the RU through the fronthaul link associated with the target physical cell.

Meanwhile, after receiving the aforementioned first control instruction, the RU copies the scrambled downlink data sent from the baseband board associated with the target physical cell to the radio frequency channel corresponding to the abnormal physical cell. In this way, the radio frequency channel corresponding to the target physical cell will output the beam signal carrying the downlink data of the abnormal physical cell and the downlink data of the target physical cell, and send it to the terminal of the target physical cell through the communication satellite. The radio frequency channel will also output the beam signal carrying the downlink data of the abnormal physical cell and the downlink data of the target physical cell, and send it to the terminal of the abnormal physical cell through the communication satellite.

It can be seen that after the communication service of the abnormal physical cell is migrated to the target physical cell, the terminal of the abnormal physical cell can read the downlink data from other devices on the Internet from the received beam signal.

The above processing method can be considered as copying the downlink data output by the baseband board corresponding to the target physical cell to the radio frequency channel corresponding to the abnormal physical cell.

All in all, after the communication service of the abnormal physical cell is migrated to the target physical cell, the hardware and links associated with the target physical cell are used to process and transmit the data of the target physical cell and the data of the abnormal physical cell.

It should be noted that when a target physical cell corresponds to a plurality of abnormal physical cells, the migration of the communication service performed in step S303 refers to, for a target physical cell, transferring the data of all abnormal physical cells corresponding to the target physical cell. All communication services are migrated to this target physical cell.

The abnormal repair method provided by the present application has the following beneficial effects:

In the first aspect, after detecting an abnormal physical cell, the CU can timely migrate the communication services of the abnormal physical cell to the corresponding target physical cell, so that the terminal of the abnormal physical cell can be even in the case of hardware or link failures in the base station. It can also access the mobile Internet through the base station, thereby improving the reliability of the base station.

In addition, since the abnormal physical cell and the target physical cell have the same physical cell identifier, the base station and the terminal use the hardware and links associated with the target physical cell to perform data interaction with the terminal of the abnormal physical cell. The method of the radio signal (specifically including the synchronization signal used, and the scrambling code used for scrambling and descrambling) is the same as when the hardware and links associated with the abnormal physical cell are used for data exchange. Correspondingly, the terminal of the abnormal physical cell There is no need to leave the original mobile network and re-register to the new mobile network because the physical cell identity is changed, and the time required to complete the migration of the communication service is very short.

Further, since the abnormal physical cell and the target physical cell belong to the same centralized unit CU, and the influence of the DU associated with the abnormal physical cell and the target physical cell does not need to be considered when migrating communication services, the time required to complete the migration of communication services is further shortened. time. To sum up, the user of the terminal located in the abnormal physical cell will not feel disconnected from the network for a long time, and a better user experience can be obtained.

On the other hand, the method provided by this application is mainly to use the hardware and link associated with the target physical cell to simultaneously support the data of the terminals of the target physical cell and the abnormal physical cell when the hardware or link associated with the abnormal physical cell fails. For interaction, in the case where the base station does not have a corresponding abnormal physical cell, each hardware and each link of the base station is used to support data interaction between terminals in the associated physical cell in a normal state. That is to say, using the method provided by the present application to achieve abnormal repair, it is not necessary to add redundant hardware and redundant links that do not function in a normal state (that is, not used to support data interaction of terminals) in the base station. High reliability while avoiding increasing the construction cost of the base station.

In order to facilitate the understanding of the abnormality repair method provided by the embodiment of the present application, the execution process of the method is described below with reference to an example.

Assume that during the operation of the base station, three fronthaul links are detected to be faulty, and the data transmission through the three fronthaul links cannot be performed. Correspondingly, it can be determined that the physical cells associated with the three fronthaul links are abnormal physical cells. The physical cells associated with the fronthaul link, that is, the detected abnormal physical cells, are physical cell A1, physical cell B1, physical cell B2, physical cell C1, physical cell C2, and physical cell C3.

The physical cell identifier of the physical cell A1 is denoted as PCI-A, and in addition to the abnormal physical cell A1, PCI-A also corresponds to four normal physical cells, which are denoted as physical cells A2 to A4 in sequence.

The physical cell identifiers of the physical cell B1 and the physical cell B2 are both PCI-B, and the PCI-B also corresponds to three normal physical cells, which are sequentially recorded as physical cells B3 to B5.

The physical cell identifiers of the physical cells C1 to C3 are all PCI-C, and the PCI-C also corresponds to two normal physical cells, namely C4 and C5.

For the abnormal physical cell A1, it can be found that its corresponding candidate physical cells include physical cells A2 to A5. Therefore, one candidate physical cell with the lightest load can be selected from the four candidate physical cells as the abnormal physical cell A1 the target physical cell, and then migrate the communication service of the abnormal physical cell A1 to the determined target physical cell.

For the abnormal physical cells B1 and B2, because the number of candidate physical cells corresponding to the same physical cell identifier PCI-B is more than the number of abnormal physical cells, the candidate physical cells B3, B4 and B5 can be classified according to the weight of the load. Sorting, selecting two candidate physical cells with light load among them as target physical cells of abnormal physical cells B1 and B2 respectively, and then performing the migration of communication services.

For abnormal physical cells C1 to C3, the number of candidate physical cells corresponding to PCI-C is less than the number of abnormal physical cells, assuming that among the two candidate physical cells C4 and C5, physical cell C4 has a lighter load, therefore, Determine the physical cell C4 as the target physical cell of the abnormal physical cells C1 and C2, determine the physical cell C5 as the target physical cell of the abnormal physical cell C3, and then migrate the communication services of the abnormal physical cells C1 and C2 to the physical cell C4 , the communication service of the abnormal physical cell C3 is migrated to the physical cell C5.

It can be seen from the abnormality recovery method provided by the above embodiment that to realize the abnormality recovery method provided by the present application, it is necessary to configure the same physical cell identifier for a plurality of different physical cells in advance in the networking stage.

In addition to the aforementioned configuration method for configuring the same physical cell identifier for the same frequency physical cell preferentially, and configuring different physical cell identifiers for the inter-frequency physical cell, in this application, the physical cell identifier can also be configured in the following manner:

A physical cell identifier is configured for the physical cell according to the communication priority preset for each physical cell.

The number of co-identified cells in each physical cell is positively correlated with the communication priority of the physical cell. A cell with the same ID refers to a physical cell that has the same physical cell ID as the physical cell.

That is to say, when configuring the physical cell identifier, if the communication priority of a certain physical cell is higher, a PCI corresponding to more physical cells is configured for this physical cell; otherwise, if the communication priority of a certain physical cell is higher If the level is lower, a PCI corresponding to fewer physical cells is configured for this physical cell.

The reason for this configuration is:

In this application, when an abnormal physical cell occurs, the hardware and links of other physical cells with the same PCI as the abnormal physical cell are used as the backup hardware and backup links of the abnormal physical cell. The greater the number of identified cells, the greater the number of backup hardware and backup links in the physical cell. Relatively, when an abnormality occurs in the physical cell, it is easier for the communication service of the physical cell to migrate to other normal physical cells.

Therefore, configuring the PCI according to the communication priority of the physical cell in the above manner can ensure that the physical cell with a higher communication priority has more spare hardware and spare links, so that these communications are given priority under limited communication resources. The communication services of the higher-level physical cells have higher reliability.

The communication priority of a physical cell is used to characterize the importance of the signal connection of the physical cell. For example, the signal connection of terminal equipment in facilities such as public security bureaus and hospitals in a city is more important, and the communication priority of the physical cell where these facilities are located can be determined. Set to high priority, on the contrary, the communication priority of physical cells that do not contain such facilities can be set to low priority.

In combination with the abnormality repair method provided by the embodiment of the present application, the embodiment of the present application further provides an abnormality repairing device, which can be considered as a functional module integrated in the centralized unit CU of the base station, please refer to FIG. 4 , the device may include the following unit:

The detection unit 401 is configured to detect in real time whether each physical cell is in an abnormal state.

The determining unit 402 is configured to determine a corresponding target physical cell for the abnormal physical cell.

The target physical cell is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell; the abnormal physical cell refers to each detected physical cell in an abnormal state.

The relocation unit 403 is configured to relocate the communication service of the abnormal physical cell to the corresponding target physical cell.

When the detection unit 401 detects in real time whether each physical cell is in an abnormal state, it is specifically used for:

Real-time detection of whether the hardware and link between the centralized unit and the radio communication unit in the base station are in an abnormal state;

Wherein, if any hardware or link between the centralized unit and the radio communication unit is detected to be in an abnormal state, it is detected that the physical cell associated with the hardware or link in the abnormal state is in an abnormal state.

When the determining unit 402 determines a target physical cell for the abnormal physical cell, it is specifically used for:

Identifying at least one physical cell that has the same physical cell identity as the abnormal physical cell and is in a normal state as a candidate physical cell;

According to a preset selection strategy, one candidate physical cell is selected from at least one candidate physical cell as the target physical cell corresponding to the abnormal physical cell.

When the determining unit 402 selects one candidate physical cell from at least one candidate physical cell as the target physical cell corresponding to the abnormal physical cell according to the preset selection strategy, it is specifically used for:

From at least one candidate physical cell, the candidate physical cell with the lightest load is selected as the target physical cell corresponding to the abnormal physical cell.

When the relocation unit 403 relocates the communication service of the abnormal physical cell to the corresponding target physical cell, it is specifically used for:

The uplink data and downlink data of the abnormal physical cell are transmitted through the hardware and link associated with the target physical cell.

For the specific working principle of the abnormality repairing device provided in the embodiment of the present application, reference may be made to the relevant steps in the abnormality repairing method provided by any embodiment of the present application, which will not be described in detail here.

The application provides an abnormality repairing device. The detection unit 401 detects in real time whether each physical cell is in an abnormal state; the determination unit 402 determines a corresponding target physical cell for the detected abnormal physical cell; the target physical cell is in a normal state and corresponds to The abnormal physical cells have the same physical cell identifier; the abnormal physical cell refers to each detected physical cell in an abnormal state; the migration unit 403 migrates the communication service of the abnormal physical cell to the corresponding target physical cell. This solution can migrate the communication services of the abnormal physical cell to the target physical cell when the physical cell is in an abnormal state, and support the communication of the abnormal physical cell through the hardware and link of the target physical cell, so as to solve the problem without adding redundant equipment. The problem that the terminal of the physical cell is disconnected from the network caused by the abnormality of the associated hardware and link.

An embodiment of the present application further provides a base station, where the base station may include various hardware and links as shown in FIG. 2 , wherein the centralized unit of the base station may include the processor 501 and the memory 502 shown in FIG. 5 .

The processor 501 may be a single processor or a processor group composed of multiple processors.

Memory 502 may store one or more programs.

The processor 501 may execute one or more programs stored in the memory 502, thereby implementing the exception repair method provided by any embodiment of the present application.

An embodiment of the present application further provides a computer storage medium for storing a computer program, and when the computer program is executed, it is specifically used to implement the abnormality repair method provided by any embodiment of the present application.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

Memory may include non-persistent memory in computer readable media, random access memory (RAM) and/or non-volatile memory in the form of, for example, read only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media includes both persistent and non-permanent, removable and non-removable media, and storage of information may be implemented by any method or technology. Information may be computer readable instructions, data structures, modules of programs, 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 Disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.

It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.

It will be appreciated by those skilled in the art that the embodiments of the present application may be provided as a method, a system or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The above are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims (12)

A method for repairing abnormality, comprising: Real-time detection of whether each physical cell is in an abnormal state; Determine a corresponding target physical cell for the abnormal physical cell; wherein, the target physical cell is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell; the abnormal physical cell refers to each detected physical cell. A physical cell in an abnormal state; The communication service of the abnormal physical cell is migrated to the corresponding target physical cell. The method according to claim 1, wherein the detecting in real time whether each physical cell is in an abnormal state comprises: Real-time detection of whether the hardware and link between the centralized unit and the radio communication unit in the base station are in an abnormal state; Wherein, if it is detected that any hardware or link between the centralized unit and the radio communication unit is in an abnormal state, it is detected that the physical cell associated with the hardware or link in the abnormal state is in an abnormal state. The method according to claim 1, wherein the determining a target physical cell for the abnormal physical cell comprises: Identifying at least one physical cell that has the same physical cell identity as the abnormal physical cell and is in a normal state as a candidate physical cell; According to a preset selection strategy, one candidate physical cell is selected from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell. The method according to claim 3, wherein, according to a preset selection strategy, selecting one candidate physical cell from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell, include: From at least one of the candidate physical cells, the candidate physical cell with the lightest load is selected as the target physical cell corresponding to the abnormal physical cell. The method according to claim 1, wherein the migrating the communication service of the abnormal physical cell to the corresponding target physical cell comprises: The uplink data and downlink data of the abnormal physical cell are transmitted through the hardware and link associated with the target physical cell. An abnormality repair device, characterized in that it includes: A detection unit, used for real-time detection of whether each physical cell is in an abnormal state; a determining unit, configured to determine a corresponding target physical cell for the abnormal physical cell; wherein the target physical cell is in a normal state and has the same physical cell identifier as the corresponding abnormal physical cell; the abnormal physical cell refers to Each detected physical cell in an abnormal state; The relocation unit is configured to relocate the communication service of the abnormal physical cell to the corresponding target physical cell. The device according to claim 6, wherein when the detection unit detects in real time whether each physical cell is in an abnormal state, it is specifically used for: Real-time detection of whether the hardware and link between the centralized unit and the radio communication unit in the base station are in an abnormal state; Wherein, if it is detected that any hardware or link between the centralized unit and the radio communication unit is in an abnormal state, it is detected that the physical cell associated with the hardware or link in the abnormal state is in an abnormal state. The device according to claim 6, wherein when the determining unit determines a target physical cell for the abnormal physical cell, it is specifically used for: Identifying at least one physical cell that has the same physical cell identity as the abnormal physical cell and is in a normal state as a candidate physical cell; According to a preset selection strategy, one candidate physical cell is selected from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell. The apparatus according to claim 8, wherein the determining unit selects, according to a preset selection strategy, one candidate physical cell from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell When the cell is used, it is specifically used for: From at least one of the candidate physical cells, the candidate physical cell with the lightest load is selected as the target physical cell corresponding to the abnormal physical cell. The device according to claim 6, wherein when the relocation unit relocates the communication service of the abnormal physical cell to the corresponding target physical cell, it is specifically used for: The uplink data and downlink data of the abnormal physical cell are transmitted through the hardware and link associated with the target physical cell. A base station, characterized in that it includes: one or more processors; memory on which one or more programs are stored; When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the exception repair method as claimed in any one of claims 1 to 5 . A computer storage medium, characterized in that it is used to store a computer program, and when the computer program is executed, it is specifically used to implement the abnormality repair method according to any one of claims 1 to 5.

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