CN113068205B - Abnormality repairing method, abnormality repairing device, base station and computer storage medium - Google Patents
Abnormality repairing method, abnormality repairing device, base station and computer storage medium Download PDFInfo
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- CN113068205B CN113068205B CN202110289727.6A CN202110289727A CN113068205B CN 113068205 B CN113068205 B CN 113068205B CN 202110289727 A CN202110289727 A CN 202110289727A CN 113068205 B CN113068205 B CN 113068205B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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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
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- 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
Abstract
The application provides an anomaly repair method, an anomaly repair device, a base station and a computer storage medium, wherein the anomaly repair method comprises the following steps: detecting whether each physical cell is in an abnormal state in real time; determining a corresponding target physical cell for the detected 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; and migrating the communication service of the abnormal physical cell to the corresponding target physical cell. According to the scheme, when the physical cell is in an abnormal state, the communication service of the abnormal physical cell is migrated to the target physical cell, and the communication of the abnormal physical cell is supported through the hardware and the link of the target physical cell, so that the problem that the terminal of the physical cell is off-line due to the abnormality of the associated hardware and link is solved while redundant equipment is not added.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an anomaly repairing method, an anomaly repairing device, a base station, and a computer storage medium.
Background
A base station is an important communication facility in mobile communication, and a base station may include a centralized unit, a radio communication unit, and several pieces of hardware (e.g., a distributed unit and a baseband board mounted on the distributed unit) and links (e.g., a medium-transmission link and a forward-transmission link) for connection between the centralized unit and the radio communication unit.
The coverage area of a base station is generally divided into a plurality of physical cells, and a radio communication unit can receive and send uplink data and downlink data of each physical cell through a wireless channel corresponding to the physical cell, and perform interaction of the uplink data and the downlink data through hardware and a link and a centralized unit associated with the physical cell, so that a terminal of the physical cell can access a wireless network.
In order to improve the reliability of the base station, the problem that the terminal of the corresponding physical cell is disconnected due to the abnormality of the part of hardware or links in the operation process of the base station is solved, redundant hardware and links are generally arranged in the base station as backup at present, and the redundant hardware and links obviously increase the construction cost of the base station and are unfavorable for the development of mobile communication.
Disclosure of Invention
Based on the above-mentioned problems of the prior art, the present application provides an anomaly repair method, apparatus, base station and computer storage medium to provide a highly reliable mobile communication scheme independent of redundant devices.
The first aspect of the present application provides an anomaly repair method, including:
detecting whether each physical cell is in an abnormal state in real time;
determining 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 cells refer to detected physical cells each in an abnormal state;
and migrating the communication service of the abnormal physical cell to a corresponding target physical cell.
Optionally, the detecting, in real time, whether each physical cell is in an abnormal state includes:
detecting whether hardware and a link between a centralized unit and a radio communication unit in a base station are in an abnormal state in real time;
if any hardware or link between the centralized unit and the radio communication unit is detected to be in an abnormal state, detecting that a physical cell associated with the hardware or link in the abnormal state is in the abnormal state.
Optionally, the determining a target physical cell for the abnormal physical cell includes:
identifying at least one physical cell which has the same physical cell identifier as the abnormal physical cell and is in a normal state as an alternative physical cell;
and selecting one alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
Optionally, according to a preset selection policy, selecting an alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell, where the selecting includes:
and selecting the candidate physical cell with the lightest load from at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell.
Optionally, the migrating the communication service of the abnormal physical cell to the corresponding target physical cell includes:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link associated with the target physical cell.
A second aspect of the present application provides an abnormality repairing device including:
the detection unit is used for detecting whether each physical cell is in an abnormal state or not in real time;
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 cells refer to detected physical cells each in an abnormal state;
and the migration unit is used for migrating the communication service of the abnormal physical cell to the corresponding target physical cell.
Optionally, the detecting unit detects in real time whether each physical cell is in an abnormal state, and is specifically configured to:
detecting whether hardware and a link between a centralized unit and a radio communication unit in a base station are in an abnormal state in real time;
if any hardware or link between the centralized unit and the radio communication unit is detected to be in an abnormal state, detecting that a physical cell associated with the hardware or link in the abnormal state is in the abnormal state.
Optionally, when the determining unit determines a target physical cell for the abnormal physical cell, the determining unit is specifically configured to:
identifying at least one physical cell which has the same physical cell identifier as the abnormal physical cell and is in a normal state as an alternative physical cell;
And selecting one alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
Optionally, when the determining unit selects, according to a preset selection policy, one candidate physical cell from at least one candidate physical cell as the target physical cell corresponding to the abnormal physical cell, the determining unit is specifically configured to:
and selecting the candidate physical cell with the lightest load from at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell.
Optionally, the migration unit migrates the communication service of the abnormal physical cell to the corresponding target physical cell, which is specifically configured to:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link associated with the target physical cell.
A third aspect of the present application provides a base station, comprising:
one or more processors;
a memory having one or more programs stored thereon;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method for exception recovery provided by any one of the first aspects of the present application.
A fourth aspect of the present application provides a computer storage medium storing a computer program which, when executed, is specifically adapted to carry out the abnormality repair method provided in any one of the first aspects of the present application.
The application provides an anomaly repair method, an anomaly repair device, a base station and a computer storage medium, wherein the anomaly repair method comprises the following steps: detecting whether each physical cell is in an abnormal state in real time; configuring a corresponding target physical cell for the detected 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; and migrating the communication service of the abnormal physical cell to the corresponding target physical cell. According to the scheme, when the physical cell is in an abnormal state, the communication service of the abnormal physical cell is migrated to the target physical cell, and the communication of the abnormal physical cell is supported through the hardware and the link of the target physical cell, so that the problem that the terminal of the physical cell is off-line due to the abnormality of the associated hardware and link is solved while redundant equipment is not added.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a mobile internet system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present application;
FIG. 3 is a flowchart of an anomaly repair method according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an abnormality repairing apparatus according to 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 Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to facilitate understanding of the abnormality repairing method provided by the present application, terms related to the method provided by the present application will be described below with reference to the accompanying drawings.
Physical cell and physical cell identity. Referring to fig. 1, fig. 1 is a schematic diagram of a mobile internet system implemented by using a communication satellite. Such systems consist essentially of a base station and an orbiting communication satellite, with one base station being connectable to one or more satellites via a wireless channel (i.e., the feeder link shown in fig. 1). As shown in fig. 1, a satellite may transmit a plurality of beams (the beams correspond to the user links shown in fig. 1, and may be understood as electromagnetic waves transmitted by the satellite in a specific direction), each beam may cover a certain area on the ground, and the ground area covered by one beam transmitted by a communication satellite is a physical cell.
The base station configures a physical cell identifier (Physical Cell Identifier, PCI) for each physical cell of the corresponding communication satellite during the networking phase after start-up.
The effects of PCI include:
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, performs scrambling processing on downlink data (refer to data sent from the base station to a terminal located in the physical cell X) of the physical cell X according to the PCI of the physical cell X, that is, calculates a scrambling code corresponding to the downlink data and the PCI according to a preset calculation mode, obtains downlink data after scrambling processing, and finally sends a data signal carrying the downlink data after scrambling processing and the synchronization signal of the physical cell X as a beam signal of the physical cell X to the communication satellite through the feeder link, and then sends the received beam signal to the physical cell X, thereby completing a process of sending the downlink data to the terminal located in the physical cell X.
On the other hand, the terminal located in the physical cell X may generate, according to the processing manner of the base station on the downlink data, a beam signal composed of a synchronization signal (generated according to the PCI of the physical cell X) and a data signal (carrying uplink data after scrambling processing), and send the beam signal to the communication satellite through the user link, and then the communication satellite sends the beam signal to the base station through the feeder link, so as to implement transmission of the uplink data (referring to the data sent from the terminal to the base station).
In summary, between the base station and the terminal located in the physical cell, the communication satellite is used as a transfer device, and the interaction of data is realized through the radio signal (or electromagnetic wave) carrying uplink data or downlink data, so that the mobile terminal can access the internet. The physical cell identifier PCI determines the manner in which the base station and the terminal generate a radio signal carrying data and parse the carried data from the radio signal.
The terminal can be an onboard communication terminal, an on-board communication terminal and a ship-borne communication terminal which are installed on large-scale mechanical equipment such as an airplane, an automobile and a ship.
The structure of the base station in the mobile internet system shown in fig. 1 may refer to fig. 2. As shown in fig. 2, the base station may include a Central Unit (CU), and a plurality of distribution units (DistributedUnit, DU, set to M), and each DU may be installed with a plurality of baseband boards (BPBs), each of which is uniquely associated with one physical cell. The DU and the CU are connected through a plurality of intermediate transmission links (the number of the lines for transmitting data is consistent with the number of the DU), and the data received by the DU can be distributed to each baseband board. The plurality of distribution units are further connected to a Radio communication Unit (RU) through a plurality of forward links (which may be understood as lines for transmitting data, and the number is L), and a base station may include a Radio communication Unit, which is further connected to a Radio Frequency Unit (Radio Frequency) through an antenna feeder link (which may be understood as lines for transmitting data), and the Radio Frequency Unit receives and transmits the aforementioned beam signal to a communication satellite through an antenna of the base station. The above units and baseband boards may be collectively referred to as hardware of a base station.
The central unit CU is used for controlling the operation of the other units and for performing data interactions between the base station and the other base stations. The baseband board is used for scrambling downlink data of the physical cell according to the PCI of the associated physical cell, and descrambling scrambled uplink data sent to the base station by the terminal of the physical cell. The uplink data obtained by descrambling is transmitted to the CU through a middle transmission link of the DU where the baseband board is located, and the scrambled downlink data obtained by scrambling is transmitted to the RU through a front transmission link.
One forward link may be used to convey scrambled downstream data and scrambled upstream data of one or more physical cells, that is, one forward link may be associated with multiple physical cells.
The RU is divided into a plurality of radio frequency channels, each radio frequency channel uniquely corresponds to one physical cell, and is used for generating a corresponding beam signal according to the scrambled downlink data of the corresponding physical cell, and the beam signal carrying the downlink data is transmitted to the communication satellite after power amplification and frequency modulation by RF. 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 the scrambled uplink data to the baseband board of the DU through the forward link.
Through the above structure and working principle of the mobile internet system and the base station, it can be found that if the hardware (for example, the distribution unit, and the baseband board installed on the distribution unit) or the link (for example, the forward link and the intermediate link) of the base station fails, the physical cells associated with the hardware or the link are in an abnormal state, so that the terminal located in the abnormal physical cell (refer to the physical cell in the abnormal state) cannot perform data interaction with other devices in the internet through the base station, in other words, the terminal located in the abnormal physical cell is separated from the internet (abbreviated as off-line). In order to solve the problem of off-network of a terminal located in an abnormal physical cell caused by the failure of hardware or a link of a base station and improve the reliability of a mobile internet system, the application provides an abnormal repair method which is used for timely recovering the communication service of the abnormal physical cell when the abnormal physical cell occurs, thereby solving the problem of off-network of the terminal of the abnormal physical cell.
The abnormality repairing method provided by any embodiment of the application can be suitable for the base station which manages more physical cells in a centralized way or suitable for the gateway station which manages more physical cells in a satellite communication system.
Referring to fig. 3, the method for repairing an abnormality provided in the embodiment of the present application may include the following steps:
firstly, it should be noted that, in the exception repairing method provided by the embodiment of the present application, the execution body may be regarded as the central unit CU in the base station.
S301, detecting whether each physical cell is in an abnormal state in real time.
If it is detected that at least one physical cell is in an abnormal state, that is, if it is detected that at least one abnormal physical cell is present, step S302 is performed.
If it is detected that each physical cell is in a normal state, that is, if it is detected that there is no abnormal physical cell currently, step S301 is continued until at least one abnormal physical cell is detected.
As described above, a physical cell is in an abnormal state, or the physical cell is an abnormal physical cell, it may be understood that a hardware or a link associated with the physical cell in a base station fails, so that uplink data of a terminal of the physical cell cannot be sent to other devices of the internet through the base station, and downlink data sent to the terminal of the physical cell by other devices of the internet through the base station cannot be received, in other words, the terminal of the physical cell is caused to be disconnected, or communication service of the physical cell is caused to be interrupted.
In the method provided by the application, the hardware associated with one physical cell comprises the following steps:
the base band board is positioned on the distribution unit and used for scrambling downlink data of the physical cell, descrambling the scrambled uplink data of the physical cell and the distribution unit DU to which the base band board associated with the physical cell belongs.
A physical cell associated link comprising:
a forward link between the RU and the DU associated with the physical cell for transmitting scrambled uplink data and scrambled downlink data of the physical cell, and a midamble between the CU and the DU associated with the physical cell for transmitting uplink data and downlink data of the physical cell.
One forward link may be used for the transmission of scrambled uplink data and scrambled downlink data for multiple physical cells, and thus one forward link may be associated with multiple physical cells at the same time.
Similarly, one midamble is used to transmit uplink data and downlink data of multiple physical cells associated with one DU, so that one midamble can be associated with multiple physical cells at the same time.
In summary, the real-time detection of whether each physical cell is in an abnormal state in step S301 may be implemented by detecting whether the hardware (including the DU and the baseband board installed in the DU) and the link (including the intermediate link and the forward link) fail (or are in an abnormal state) in real time.
Therefore, the implementation of step S301 may be:
it is detected in real time whether each hardware (including DU and baseband board) and each link (including forward link and intermediate link) located between the centralized unit and the radio communication unit in the base station has failed.
If any one of the hardware located between the centralized unit and the radio communication unit, or any one of the links fails, it may be determined that the failed hardware or the physical cell associated with the link is in an abnormal state.
For detection of the forward link and the intermediate link, the CU may implement the detection of the link by the link detection signal of the corresponding link, and if the CU receives no response within a preset time after issuing the link detection signal by one link, it may determine that the corresponding link fails.
Each DU of the base station will send a heartbeat signal to the CU at a certain period timing during normal operation, so when the CU executes step S301, it can detect in real time whether itself receives the heartbeat signal sent at each DU timing, and if detecting that a certain DU does not send a heartbeat signal at a certain timing, it can determine that the DU fails.
Each baseband board of the DU has an operation state identifier for indicating whether the baseband board is normally operated at present, and the CU can judge whether each baseband board is faulty or not only by detecting the operation state identifier of each baseband board at regular time intervals.
After detecting the abnormal physical cell, the CU may further query the RU for a radio frequency channel corresponding to the abnormal physical cell.
S302, determining 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, in step S302, a corresponding target physical cell is determined for each abnormal physical cell detected in step S301. When a plurality of abnormal physical cells are detected in step S301, one target physical cell may simultaneously correspond to the plurality of abnormal physical cells.
In the mobile internet system applying the method provided by the embodiment of the application, the base station performs physical cell networking according to a single cell networking mode, and the same physical cell identifier is configured for a plurality of physical cells in the networking stage. That is, one physical cell identity may correspond to a plurality of physical cells at the same time.
In general, the strategy of configuring the physical cell identifier may be to configure the same physical cell identifier for the same-frequency physical cell preferentially, configure different physical cell identifiers for different-frequency physical cells, and on this basis, combine PCIs with the number of corresponding physical cells being less than or equal to a preset number threshold, so as to ensure that the number of physical cells corresponding to each PCI is greater than the number threshold.
For example, after the number threshold is set to be 5 and the PCI is configured for the first time, 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 may be combined, and the same PCI may be configured for the 7 physical cells, for example, the PCIs of the 7 physical cells may be determined to be PCI-1, so that it is ensured that each PCI corresponds to at least 5 physical cells, that is, it is ensured that each physical cell has at least four physical cells having the same PCI as the physical cell.
The reason for configuring the physical cell identifier is that the repairing method provided by the application mainly transfers the communication service of the abnormal physical cell to the target physical cell which has the same PCI as the abnormal physical cell and is in a normal state, and the communication service of the abnormal physical cell is quickly recovered in the mode. Therefore, the method for configuring the PCI needs to be adopted to ensure that each time an abnormal physical cell is detected, a target physical cell meeting the above conditions can be found for each abnormal physical cell.
The specific implementation procedure of step S302 may include:
And identifying at least one physical cell which has the same PCI as the abnormal physical cell and is in a normal state as an alternative physical cell of the abnormal physical cell aiming at each abnormal physical cell, and then selecting one alternative physical cell from the identified at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
The first selection policy 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 policy 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 indexes can be used to measure the load degree of a physical cell. For example, the amount of data to be transmitted in a unit time of the physical cell may be detected, and the larger the amount of data to be transmitted in the unit time is, the heavier the load of the physical cell is, and vice versa, the lighter the load is.
The number of terminals accessing the physical cell (the number of the terminals in the physical cell can be understood) can be detected respectively, the amount of time-frequency resources occupied by each accessed terminal is converted into the load fraction of the physical cell according to a preset conversion formula, wherein the higher the number of the terminals accessing the physical cell is, the higher the load fraction of the physical cell is, and the load is heavier; the higher the amount of time-frequency resources occupied by each terminal, the higher the load fraction of the physical cell, and the heavier the load.
For the second selection strategy, the accuracy of the data of one physical cell in the communication process can be used for reflecting the communication quality of the physical cell, and the higher the accuracy is, the better the communication quality of the physical cell is, whereas the lower the accuracy is, the worse the communication quality is.
By setting different selection strategies, when the communication service of the abnormal physical cell is restored, the target physical cell can be selected according to the requirement of the abnormal physical cell, if the communication service of one abnormal physical cell requires as high a data transmission rate as possible, the target physical cell can be selected according to the first selection strategy, and if one abnormal physical cell requires as good a communication quality as possible, the target physical cell can be selected according to the second selection strategy.
Further, when there are a plurality of abnormal physical cells corresponding to the same PCI among the plurality of abnormal physical cells detected in step S301, the process of determining the target physical cell for the abnormal physical cells corresponding to the same PCI may be:
first, assume that K physical cells are provided, where the physical cell identifiers are all PCI-N, in step S301, it is detected that X physical cells among the K physical cells are abnormal physical cells, and Y physical cells are normal physical cells (i.e., physical cells in a normal state, x+y=k).
When step S302 is executed to determine the corresponding target physical cells for the X abnormal physical cells, the Y normal physical cells may be ranked according to the degree of loading first, the load is light, and then the load is heavy, and in addition, the X abnormal physical cells may be ranked according to the degree of loading when in the normal state, the load is heavy, and then the load is light.
After the sorting is finished, if X is smaller than or equal to Y, selecting the first X normal physical cells from the sorted Y normal physical cells, and determining each normal physical cell as a target physical cell of the abnormal physical cell at the corresponding position. That is, among the physical cells corresponding to PCI-N, the normal physical cell with the lightest load is determined as the abnormal physical cell with the heaviest load originally, the normal physical cell with the second lightest load is determined as the abnormal physical cell with the second heaviest load originally, and so on.
If X is larger than Y, firstly, aiming at the first Y abnormal physical cells in the ordered X abnormal physical cells, determining corresponding target physical cells one by one according to a method when the X is smaller than or equal to Y, then selecting the first Y abnormal physical cells from the rest abnormal physical cells of which the target physical cells are not determined, repeating the method when the X is smaller than or equal to Y to determine the corresponding target physical cells one by one, and so on until each abnormal physical cell has the corresponding target physical cell. It can be seen that in case X is larger than Y, one target physical cell may correspond to a plurality of abnormal physical cells.
S303, the communication service of the abnormal physical cell is migrated to the corresponding target physical cell.
Step S303 may 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 following describes a method for migrating communication traffic from both the transmission of uplink data and the transmission of downlink data, respectively.
In a first aspect, for uplink data (i.e. data sent from a terminal to a base station), migrating communication traffic of an abnormal physical cell to a corresponding target physical cell may include:
The central unit CU sends a first control instruction to the radio communication unit RU, where the first control instruction carries a radio frequency channel associated with an abnormal physical cell and a radio frequency channel associated with a corresponding target physical cell. After receiving the first control instruction, the RU sends the scrambled uplink data output by the radio frequency channel of the abnormal physical cell and the scrambled uplink data output by the radio frequency channel of the target physical cell to the DU associated with the target physical cell through the forward link associated with the target physical cell.
On the other hand, the CU sends a second control instruction to the baseband board associated with the target physical cell, so as to control the baseband board of the target physical cell to perform descrambling processing on the scrambled uplink data of the target physical cell and the scrambled uplink data of the abnormal physical cell at the same time, and send the uplink data of the target physical cell and the uplink data of the abnormal physical cell to the central unit CU together through the intermediate link associated with the target physical cell.
In this way, the uplink data of the abnormal physical cell can be transmitted to the central unit CU through the hardware and link associated with the target physical cell, and then transmitted to other devices of the internet through the central unit CU.
In the above processing method, it is considered that the uplink data of the abnormal physical cell and the uplink data of the corresponding target physical cell are combined.
In a second aspect, for downlink data (i.e., data sent from a base station to a terminal), migrating communication traffic of an abnormal physical cell to a corresponding target physical cell may include:
the CU sends downlink data of the abnormal physical cell and downlink data of the target physical cell to the DU associated with the target physical cell through the intermediate transmission link associated with the target physical cell, and simultaneously controls the baseband board associated with the target physical cell to scramble the downlink data of the target physical cell and the downlink data of the abnormal physical cell through the second control instruction to obtain scrambled downlink data, and the scrambled downlink data of the abnormal physical cell and the scrambled downlink data of the target physical cell are sent to the RU through the forward transmission link associated with the target physical cell.
Meanwhile, after receiving the first control instruction, the RU copies the scrambled downlink data sent by 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 outputs the beam signal carrying the downlink data of the abnormal physical cell and the downlink data of the target physical cell, and sends the beam signal to the terminal of the target physical cell through the communication satellite.
Therefore, 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 downlink data from other devices of the Internet from the received beam signal.
The above processing method may be considered that the downlink data output by the baseband board corresponding to the target physical cell is copied to the radio frequency channel corresponding to the abnormal physical cell.
In summary, after the communication service of the abnormal physical cell is migrated to the target physical cell, the hardware and the link associated with the target physical cell are used for processing and transmitting the data of the target physical cell and also used for processing and transmitting the data of the abnormal physical cell.
When there are a plurality of abnormal physical cells corresponding to one target physical cell, the migration of the communication service performed in step S303 means that, for one target physical cell, all the communication services of the abnormal physical cells corresponding to the target physical cell are migrated to the target physical cell.
The abnormality repairing method provided by the application has the following beneficial effects:
in the first aspect, after detecting the abnormal physical cell, the CU may timely migrate the communication service of the abnormal physical cell to the corresponding target physical cell, so that the terminal of the abnormal physical cell may access the mobile internet through the base station even in the case of a related hardware or link failure in the base station, thereby improving the reliability of the base station.
In addition, because the abnormal physical cell and the target physical cell have the same physical cell identifier, the manner (specifically including the used synchronization signal and the scrambling code used during scrambling and descrambling) of generating and analyzing the radio signal by the base station and the terminal in the process of carrying out data interaction with the terminal of the abnormal physical cell by utilizing the hardware and the link associated with the target physical cell by the base station is the same as that of carrying out data interaction by utilizing the hardware and the link associated with the abnormal physical cell originally, and correspondingly, the terminal of the abnormal physical cell does not need to be separated from the original mobile network and re-registered to the new mobile network because the physical cell identifier is changed, so that the time required for completing the migration of the communication service is very short.
Furthermore, because the abnormal physical cell and the target physical cell belong to the same central unit CU, and the influence of DUs associated with the abnormal physical cell and the target physical cell is not required to be considered when the communication service is migrated, the time required for completing the migration of the communication service is further shortened. In summary, the user of the terminal located in the abnormal physical cell does not feel the long-time disconnection, and a better user experience can be obtained.
On the other hand, the method provided by the application mainly uses the hardware and the link associated with the target physical cell to simultaneously support the data interaction of the terminal of the target physical cell and the terminal of the abnormal physical cell when the hardware or the link associated with the abnormal physical cell is in failure, and under the condition that the base station does not have the corresponding abnormal physical cell, each hardware and each link of the base station are used for supporting the data interaction of the terminal of the physical cell associated under the normal state. That is, the method provided by the application realizes the exception repair without adding redundant hardware and redundant links which do not play a role in a normal state (namely, are not used for supporting the data interaction of the terminal) in the base station, thereby ensuring that the base station has higher reliability and avoiding increasing the construction cost of the base station.
In order to facilitate understanding of the method for repairing an exception provided in the embodiment of the present application, the following describes an execution procedure of the method in combination with an example.
In the operation process of the base station, it is assumed that three forward links are detected to have faults, and data transmission originally performed through the three forward links cannot be performed, and corresponding physical cells associated with the three forward links can be determined to be abnormal physical cells, and it is assumed that the physical cells associated with the three forward links, namely the detected abnormal physical cells, are respectively a physical cell A1, a physical cell B2, a physical cell C1, a physical cell C2 and a physical cell C3.
The physical cell identifier of the physical cell A1 is denoted as PCI-a, and besides the abnormal physical cell A1, the PCI-a also corresponds to four normal physical cells, which are sequentially denoted as physical cells A2 to A4.
The physical cell identifiers of the physical cell B1 and the physical cell B2 are PCI-B, and the PCI-B also corresponds to three normal physical cells, which are sequentially marked as physical cells B3 to B5.
The physical cell identifiers of the physical cells C1 to C3 are PCI-C, and the PCI-C also corresponds to two normal physical cells, namely C4 and C5 respectively.
For the abnormal physical cell A1, it may be found that the corresponding candidate physical cells include physical cells A2 to A5, and therefore, one candidate physical cell with the lightest load may be selected from the four candidate physical cells as the target physical cell of the abnormal physical cell A1, and then the communication traffic of the abnormal physical cell A1 is migrated to the determined target physical cell.
For the abnormal physical cells B1 and B2, since the number of candidate physical cells corresponding to the same physical cell identity PCI-B is greater than the number of abnormal physical cells, the candidate physical cells B3, B4 and B5 may be sorted by the load, two candidate physical cells of which the load is lighter are selected as target physical cells of the abnormal physical cells B1 and B2, respectively, and then the migration of the communication traffic is performed.
For the abnormal physical cells C1 to C3, the number of candidate physical cells corresponding to the PCI-C is smaller than the number of the abnormal physical cells, and it is assumed that the load of the physical cell C4 is lighter in the two candidate physical cells C4 and C5, and therefore, the physical cell C4 is determined as the target physical cell of the abnormal physical cells C1 and C2, the physical cell C5 is determined as the target physical cell of the abnormal physical cell C3, and then, the communication traffic of both the abnormal physical cells C1 and C2 is migrated to the physical cell C4, and the communication traffic of the abnormal physical cell C3 is migrated to the physical cell C5.
The method for repairing the abnormality provided by the embodiment can be seen from the above, and the same physical cell identifier needs to be configured for a plurality of different physical cells in advance in the networking stage.
In addition to the above-mentioned configuration method for configuring the same physical cell identifier preferentially for the same frequency physical cell and configuring different physical cell identifiers for different frequency physical cells, in the present application, the physical cell identifiers may be configured in the following manner:
and configuring physical cell identifiers for the physical cells according to the preset communication priority of each physical cell.
Wherein the number of identified cells of each physical cell is positively correlated with the communication priority of the physical cell. The same identity cell refers to a physical cell having the same physical cell identity as the physical cell.
That is, 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 the physical cell, otherwise, if the communication priority of a certain physical cell is lower, a PCI corresponding to less physical cells is configured for the physical cell.
The reason for this configuration is that:
in practice, when an abnormal physical cell occurs, the hardware and the links of the physical cells with the same PCI as those of other abnormal physical cells are used as the spare hardware and the spare links of the abnormal physical cell, so that the more the number of the same-identification cells corresponding to one physical cell is, the more the number of the spare hardware and the spare links of the physical cell is, and the easier the communication service of the physical cell is migrated to other normal physical cells when the physical cell is abnormal.
Therefore, configuring the PCI according to the communication priority of the physical cell in the above manner can ensure that the physical cell with higher communication priority has more standby hardware and standby links, thereby enabling the communication service of the physical cell with higher communication priority to have higher reliability under the limited communication resources.
The communication priority of the physical cell is used for representing the importance degree of signal communication of the physical cell, such as signal communication of terminal equipment in facilities such as public security bureau in city, hospital and the like is important, the communication priority of the physical cell where the facilities are located can be set to be high priority, and the communication priority of the physical cell which does not contain the facilities can be set to be low priority.
In combination with the method for repairing an abnormality provided by the embodiment of the present application, the embodiment of the present application also provides an abnormality repairing device, which may be considered as a functional module of a centralized unit CU integrated in a base station, referring to fig. 4, the device may include the following units:
a detecting unit 401, configured to detect in real time whether each physical cell is in an abnormal state.
A determining unit 402, 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.
And a migration unit 403, configured to migrate the communication service of the abnormal physical cell to the corresponding target physical cell.
The detecting unit 401 detects in real time whether each physical cell is in an abnormal state, specifically:
detecting whether hardware and a link between a centralized unit and a radio communication unit in a base station are in an abnormal state in real time;
if any hardware or link between the centralized unit and the radio communication unit is detected to be in an abnormal state, the physical cell associated with the hardware or link in the abnormal state is detected to be in the abnormal state.
The determining unit 402 is specifically configured to, when determining a target physical cell for the abnormal physical cell:
identifying at least one physical cell which has the same physical cell identifier as the abnormal physical cell and is in a normal state as an alternative physical cell;
and selecting one alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
The determining unit 402 is specifically configured to, according to a preset selection policy, select one candidate physical cell from at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell:
and selecting the candidate physical cell with the lightest load from at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell.
The migration unit 403 is specifically configured to, when migrating the communication traffic of the abnormal physical cell to the corresponding target physical cell:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link associated with the target physical cell.
The specific working principle of the abnormality repairing device provided by the embodiment of the present application may refer to the relevant steps in the abnormality repairing method provided by any embodiment of the present application, and will not be described in detail herein.
The application provides an abnormality repairing device, and the detecting unit 401 detects whether each physical cell is in an abnormal state in real time; the determining unit 402 determines a corresponding target physical cell for the detected 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 migration unit 403 migrates the communication traffic of the abnormal physical cell to the corresponding target physical cell. According to the scheme, when the physical cell is in an abnormal state, the communication service of the abnormal physical cell is migrated to the target physical cell, and the communication of the abnormal physical cell is supported through the hardware and the link of the target physical cell, so that the problem that the terminal of the physical cell is off-line due to the abnormality of the associated hardware and link is solved while redundant equipment is not added.
Embodiments of the present application also provide a base station that may include various hardware and links as shown in fig. 2, where the central unit of the base station may include a processor 501 and a memory 502 as shown in fig. 5.
The processor 501 may be a single processor or a processor group formed by a plurality of processors.
Memory 502 may store one or more programs.
Processor 501 may execute one or more programs stored in memory 502 to implement the exception repair method provided by any of the embodiments of the present application.
The embodiment of the application also provides a computer storage medium for storing a computer program, which is specifically used for realizing the abnormality repair method provided by any embodiment of the application when being executed.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between different devices, modules, or units and not for limiting the order or interdependence of the functions performed by such devices, modules, or units.
Those skilled in the art will be able to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An anomaly repair method, comprising:
detecting whether each physical cell is in an abnormal state in real time;
determining a corresponding target physical cell for the abnormal physical cell; when a plurality of abnormal physical cells are detected, one target physical cell corresponds to the plurality of abnormal physical cells at the same time;
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 cells refer to detected physical cells each in an abnormal state; one physical cell identifier corresponds to a plurality of common-frequency physical cells larger than a preset quantity threshold;
Migrating the communication service of the abnormal physical cell to a corresponding target physical cell;
the real-time detection of whether each physical cell is in an abnormal state includes:
detecting whether hardware and a link between a centralized unit and a radio communication unit in a base station are in an abnormal state in real time;
if any hardware or link between the centralized unit and the radio communication unit is detected to be in an abnormal state, detecting that a physical cell associated with the hardware or link in the abnormal state is in the abnormal state;
the determining a target physical cell for the abnormal physical cell includes:
identifying at least one physical cell which has the same physical cell identifier as the abnormal physical cell and is in a normal state as an alternative physical cell;
and selecting one alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
2. The method according to claim 1, wherein selecting, according to a preset selection policy, one candidate physical cell from at least one candidate physical cell as the target physical cell corresponding to the abnormal physical cell includes:
And selecting the candidate physical cell with the lightest load from at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell.
3. The method of claim 1, wherein the migrating the traffic of the abnormal physical cell to the corresponding target physical cell comprises:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link associated with the target physical cell.
4. An abnormality repairing device, comprising:
the detection unit is used for detecting whether each physical cell is in an abnormal state or not in real time;
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 cells refer to detected physical cells each in an abnormal state; one physical cell identifier corresponds to a plurality of common-frequency physical cells larger than a preset quantity threshold;
a migration unit, configured to migrate the communication service of the abnormal physical cell to a corresponding target physical cell;
The detection unit detects in real time whether each physical cell is in an abnormal state, and is specifically configured to:
detecting whether hardware and a link between a centralized unit and a radio communication unit in a base station are in an abnormal state in real time;
if any hardware or link between the centralized unit and the radio communication unit is detected to be in an abnormal state, detecting that a physical cell associated with the hardware or link in the abnormal state is in the abnormal state;
the determining unit is specifically configured to, when determining a target physical cell for the abnormal physical cell:
identifying at least one physical cell which has the same physical cell identifier as the abnormal physical cell and is in a normal state as an alternative physical cell;
and selecting one alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
5. The apparatus of claim 4, wherein the determining unit is configured to, according to a preset selection policy, select one candidate physical cell from at least one candidate physical cell as the target physical cell corresponding to the abnormal physical cell:
And selecting the candidate physical cell with the lightest load from at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell.
6. The apparatus of claim 4, wherein the migration unit is configured to migrate the communication traffic of the abnormal physical cell to a corresponding target physical cell when:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link associated with the target physical cell.
7. A base station, comprising:
one or more processors;
a memory having one or more programs stored thereon;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the anomaly repair method of any one of claims 1 to 3.
8. A computer storage medium storing a computer program, which when executed is adapted to carry out the anomaly repair method of any one of claims 1 to 3.
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