CN113068205A - Abnormity repairing method, device, base station and computer storage medium - Google Patents
Abnormity repairing method, device, base station and computer storage medium Download PDFInfo
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Abstract
The application provides an abnormality repairing method, an abnormality repairing device, a base station and a computer storage medium, wherein the 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 identification with the corresponding abnormal physical cell; the abnormal physical cell refers to each detected physical cell in an abnormal state; and transferring 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 can be transferred 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 of terminal off-line of the physical cell caused by the abnormality of the associated hardware and the link is solved without adding redundant equipment.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for repairing an anomaly, 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 central unit, a radio communication unit, and several hardware (e.g., a distribution unit and a baseband board installed on the distribution unit) and links (e.g., a forward link and a forward link) for connection provided between the central unit and the radio communication unit.
The coverage area of a base station is generally divided into a plurality of physical cells, and the radio communication unit may receive and transmit uplink data and downlink data of each physical cell through a radio channel corresponding to the physical cell, and perform interaction of the uplink data and the downlink data through hardware and a link associated with the physical cell and a centralized unit, so that a terminal of the physical cell may access a wireless network.
In order to improve the reliability of the base station and solve the problem that the terminal of the corresponding physical cell is disconnected due to the abnormality of the above-mentioned part of hardware or links in the operation process of the base station, at present, redundant hardware and links are generally arranged in the base station as backups, and the redundant hardware and links obviously increase the construction cost of the base station and are not beneficial to the development of mobile communication.
Disclosure of Invention
Based on the above problems in the prior art, the present application provides an anomaly repairing method, apparatus, base station, and computer storage medium to provide a highly reliable mobile communication scheme that does not rely on redundant devices.
A first aspect of the present application provides an abnormality repairing 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; 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 each detected physical cell in an abnormal state;
and transferring the communication service of the abnormal physical cell to a corresponding target physical cell.
Optionally, the detecting whether each physical cell is in an abnormal state in real time includes:
detecting in real time whether hardware and links between the concentration unit and the radio communication unit in the base station are in an abnormal state;
wherein, if any one of the hardware or the link between the concentration unit and the radio communication unit is detected to be in an abnormal state, it is detected that a physical cell associated with the hardware or the 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 identification as the abnormal physical cell and is in a normal state as a candidate 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, the selecting, according to a preset selection policy, one candidate physical cell from at least one candidate physical cell as a 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.
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 which are associated with the target physical cell.
A second aspect of the present application provides an abnormality repairing apparatus comprising:
the detection unit is used for detecting whether each physical cell is in an abnormal state in real time;
a determining unit, 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 cells refer to each detected physical cell 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, when detecting whether each physical cell is in an abnormal state in real time, the detecting unit is specifically configured to:
detecting in real time whether hardware and links between the concentration unit and the radio communication unit in the base station are in an abnormal state;
wherein, if any one of the hardware or the link between the concentration unit and the radio communication unit is detected to be in an abnormal state, it is detected that a physical cell associated with the hardware or the 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 identification as the abnormal physical cell and is in a normal state as a candidate 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 the at least one candidate physical cell as a 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, when the migration unit migrates the communication service of the abnormal physical cell to the corresponding target physical cell, the migration unit is specifically configured to:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link which are 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;
when executed by the one or more processors, the one or more programs cause the one or more processors to implement the method of 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 for storing a computer program, where the computer program is specifically configured to implement the method for repairing an abnormality provided in any one of the first aspects of the present application when executed.
The application provides an abnormality repairing method, an abnormality repairing device, a base station and a computer storage medium, wherein the 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 identification with the corresponding abnormal physical cell; the abnormal physical cell refers to each detected physical cell in an abnormal state; and transferring 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 can be transferred 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 of terminal off-line of the physical cell caused by the abnormality of the associated hardware and the link is solved without adding redundant equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 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 according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of a method for repairing an anomaly 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 concentration unit of a base station according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
To facilitate understanding of the method for repairing an abnormality provided herein, terms related to the method provided herein will be first described with reference to the drawings.
A physical cell and a physical cell identity. Referring to fig. 1, fig. 1 is a schematic view of a mobile internet system implemented using a communication satellite. Such systems consist primarily of base stations and orbiting communication satellites, with one base station being connectable to one or more satellites via a wireless channel (i.e., a feeder link as shown in fig. 1). As shown in fig. 1, a satellite may transmit a plurality of beams (a beam corresponds to a user link shown in fig. 1, and may be understood as an electromagnetic wave transmitted from the satellite to a specific direction), each of which covers a certain area on the ground, and a ground area covered by a beam emitted from a communication satellite is a physical cell.
In a networking stage after the base station is started, a Physical Cell Identifier (PCI) is configured for each Physical Cell of the corresponding communication satellite.
The roles of the PCI include:
on 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 performs scrambling processing on downlink data (data sent from the base station to the terminal located in the physical cell X) of the physical cell X according to the PCI of the physical cell X, that is, calculates scrambling codes corresponding to the downlink data and the PCI in a preset calculation mode to obtain scrambled downlink data, and finally sends the data signal carrying the scrambled downlink data 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 the communication satellite sends the received beam signal to the physical cell X, thereby completing the 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 a beam signal composed of 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 manner of the downlink data by the base station, transmit the beam signal to the communication satellite through the user link, and transmit the beam signal to the base station through the feed link by the communication satellite, thereby implementing the transmission of the uplink data (referring to the data transmitted from the terminal to the base station).
In summary, a communication satellite is used as a relay device between a base station and a terminal located in a physical cell, and data interaction is realized through radio signals (or electromagnetic waves) carrying uplink data or downlink data, so that the mobile terminal can access the internet. The physical cell identity PCI determines the way in which the base station and the terminal generate radio signals carrying data and parse the carried data from the radio signals.
The terminal can be an onboard communication terminal, a vehicle-mounted communication terminal and a ship-mounted communication terminal which are arranged on large 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 can be referred to fig. 2. As shown in fig. 2, the base station may include a Central Unit (CU), a plurality of distributed units (DUs, with the number M), each of which 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 via a plurality of intermediate transmission links (which may be understood as lines for transmitting data, the number of which corresponds to the number of DUs), and the data received by the DU can be distributed to each baseband board. The plurality of distribution units are further connected to Radio communication units (RU) via a plurality of fronthaul links (L for data transmission), and a base station may include a Radio communication Unit, which is further connected to a Radio Frequency Unit (Radio Frequency) via an antenna feeder link (L for data transmission), and the Radio Frequency Unit receives and transmits the beam signal to a communication satellite via an antenna of the base station. The above units and baseband boards may be collectively referred to as hardware of the base station.
The central unit CU is used to control the operation of the other units and to perform data interaction between the local base station and the other base stations. The baseband board is used for scrambling the downlink data of the physical cell according to the PCI of the associated physical cell and descrambling the scrambled uplink data sent to the base station by the terminal of the physical cell. And transmitting the uplink data obtained by descrambling to the CU through a middle transmission link of the DU where the baseband board is located, and transmitting the scrambled downlink data obtained by scrambling to the RU through a front transmission link.
One fronthaul link may be used to convey 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 a plurality of radio frequency channels, each radio frequency channel uniquely corresponds to one physical cell, the radio frequency channels are used for generating corresponding beam signals according to scrambled downlink data of the corresponding physical cell, and the beam signals carrying the downlink data are subjected to power amplification and frequency modulation by RF and then are sent to a communication satellite. In addition, the radio frequency channel of the RU is also used to read out 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 fronthaul link.
Through the structure and the operating principle of the mobile internet system and the base station, it can be found that if hardware (for example, a distribution unit and a baseband board installed in the distribution unit) or links (for example, a forward link and a middle link) of the base station fail, physical cells associated with the hardware or the links are in an abnormal state, so that a terminal located in the abnormal physical cell (which is 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 disconnected from the internet (called offline for short). In order to solve the problem of the terminal offline in the abnormal physical cell caused by the failure of the hardware or the link of the base station and improve the reliability of the mobile internet system, the application provides an abnormal repairing method which is used for recovering the communication service of the abnormal physical cell in time when the abnormal physical cell occurs, thereby solving the problem of the terminal offline of the abnormal physical cell.
The method for repairing the abnormality provided by any embodiment of the present application may be applied to a base station that manages more physical cells in a centralized manner, or may be applied to a gateway station that 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:
it should be noted that, in the anomaly repairing method provided in the embodiment of the present application, an implementation subject of the anomaly repairing method may be regarded as a central unit CU in a base station.
S301, detecting whether each physical cell is in an abnormal state in real time.
If the at least one physical cell is detected to be in an abnormal state, that is, if the at least one abnormal physical cell is detected to be present, step S302 is executed.
If it is detected that each physical cell is in a normal state, that is, it is detected that there is no abnormal physical cell, step S301 is continuously executed until at least one abnormal physical cell is detected.
As described above, when a physical cell is in an abnormal state, or the physical cell is an abnormal physical cell, it can be understood that a hardware or a link in the base station associated with the physical cell fails, so that uplink data of the terminal of the physical cell cannot be sent to other devices in the internet through the base station, and downlink data sent to the terminal of the physical cell by other devices in the internet through the base station cannot be received, in other words, the terminal of the physical cell goes off-line, or communication service of the physical cell is interrupted.
In the method provided by the present application, hardware associated with a physical cell includes:
a baseband board located on the distribution unit and used for scrambling the downlink data of the physical cell and descrambling the scrambled uplink data of the physical cell, and a distribution unit DU to which the baseband board associated with the physical cell belongs.
A physical cell associated link comprising:
a forward link located between the RU and the DU associated with the physical cell and used for transmitting the scrambled uplink data and the scrambled downlink data of the physical cell, and a forward link located between the CU and the DU associated with the physical cell and used for transmitting the uplink data and the downlink data of the physical cell.
One fronthaul link may be used for fronthaul links for transmitting scrambled uplink data and scrambled downlink data of multiple physical cells, and thus, one fronthaul link may be associated with multiple physical cells simultaneously.
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 can be implemented by detecting whether the hardware (including the DU and the baseband board installed in the DU) and the link (including the intermediate transmission link and the forward transmission link) have failed (or are in an abnormal state) in real time.
Therefore, the implementation manner of step S301 may be:
each hardware (including DU and baseband boards) and each link (including fronthaul links and midhaul links) between the central unit and the radio communication units in the base station is detected in real time for a failure.
If any one of the hardware located between the concentration unit and the radio communication unit or any one of the links is detected to be failed, it can be determined that the failed hardware or the physical cell associated with the link is in an abnormal state.
For the detection of the fronthaul link and the middle haul link, the CU may detect the link detection signal of the corresponding link, and if the CU does not receive a response within a preset time after sending the link detection signal through one link, it may determine that the corresponding link fails.
Each DU of the base station may send a heartbeat signal to the CU at a certain periodic timing during normal operation, so that when the CU performs step S301, it may detect whether the CU receives the heartbeat signal sent at the certain timing by each DU in real time, and if it detects that a certain DU sends a heartbeat signal at an undetermined timing, it may determine that the DU has a failure.
Each baseband board of the DU has an operation status identifier for indicating whether the baseband board is operating normally currently, and the CU can determine whether each baseband board has a fault only by regularly detecting the operation status identifier of each baseband board at a certain time interval.
After detecting the abnormal physical cell, the CU may further query a radio frequency channel corresponding to the abnormal physical cell from the RU.
S302, a corresponding target physical cell is determined 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 correspond to the plurality of abnormal physical cells at the same time.
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 configures the same physical cell identifier for a plurality of physical cells in a networking stage. That is, one physical cell identity may correspond to a plurality of physical cells at the same time.
Generally, the strategy for configuring the physical cell identifier may be to preferentially configure the same physical cell identifier for the same-frequency physical cell and configure different physical cell identifiers for different-frequency physical cells, and on this basis, the PCIs of which the number of the corresponding physical cells is smaller than or equal to a preset number threshold are merged, thereby ensuring that the number of the physical cells corresponding to each PCI is greater than the number threshold.
For example, the number threshold is set to 5, after the PCI is initially configured, 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 merged, and the same PCI is configured for the 7 physical cells, for example, the PCIs of the 7 physical cells may all be determined to be PCI-1, and in this way, it is ensured that each PCI corresponds to at least 5 physical cells, in other words, 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 repair method provided by the present application mainly migrates 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 thus, the communication service of the abnormal physical cell is quickly recovered. Therefore, the above method for configuring the PCI needs to be adopted to ensure that the target physical cell meeting the above conditions can be found for each abnormal physical cell every time the abnormal physical cell is detected.
The specific implementation process of step S302 may include:
and aiming at each abnormal physical cell, identifying at least one physical cell which has the same PCI with the abnormal physical cell and is in a normal state as a candidate physical cell of the abnormal physical cell, and then selecting one candidate physical cell from the identified at least one candidate physical cell as a target physical cell corresponding to the abnormal physical cell according to a preset selection strategy.
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 indexes can be used to measure the degree of load of a physical cell. For example, the amount of data that needs to be transmitted in a unit time of the physical cell may be detected, and the larger the amount of data that needs to be transmitted in the unit time is, the heavier the load of the physical cell is, otherwise, the lighter the load is.
The number of terminals accessing the physical cell (which can be understood as the number of terminals located in the physical cell) can be detected, the amount of time-frequency resources occupied by each accessed terminal is converted into the load score of the physical cell according to a preset conversion formula, wherein the more the number of terminals accessing the physical cell is, the higher the load score of the physical cell is, and the heavier the load is; the higher the quota of the time-frequency resource occupied by each terminal is, the higher the load score of the physical cell is, and the heavier the load is.
For the second selection strategy, the communication quality of a physical cell can be reflected by the accuracy of data of the physical cell in the communication process, the higher the accuracy is, the better the communication quality of the physical cell is, otherwise, the lower the accuracy is, the worse the communication quality is.
By setting different selection strategies, a target physical cell can be selected according to the requirement of the abnormal physical cell when the communication service of the abnormal physical cell is recovered, if the communication service of one abnormal physical cell requires the data transmission rate as high as possible, the target physical cell can be selected according to a first selection strategy, and if one abnormal physical cell requires the communication quality as good as possible, the target physical cell can be selected according to a 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, and the physical cell identities of the K physical cells are PCI-N, in step S301, it is detected that X physical cells are abnormal physical cells and Y physical cells are normal physical cells (i.e., physical cells in a normal state, where X + Y is K).
In step S302, when determining the corresponding target physical cells for the X abnormal physical cells, the Y normal physical cells may be ranked according to the degree of the load, where the load is lighter before the target physical cell and the load is heavier after the target physical cell, and the X abnormal physical cells may be ranked according to the degree of the load when the target physical cell is in the normal state, where the target physical cell is heavier before the target physical cell and the target physical cell is lighter after the target physical cell.
After sorting is finished, if X is smaller than or equal to Y, the first X normal physical cells are selected from the Y normal physical cells which are sorted, and each normal physical cell is determined 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 original abnormal physical cell with the heaviest load, the normal physical cell with the second lightest load is determined as the original abnormal physical cell with the second heaviest load, and so on.
If X is larger than Y, the corresponding target physical cells are determined one by one according to the method when the previous X is smaller than or equal to Y aiming at the first Y abnormal physical cells in the sequenced X abnormal physical cells, then the first Y abnormal physical cells are selected from the abnormal physical cells of the rest undetermined target physical cells, the method when the previous X is smaller than or equal to Y is repeated 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 the case where X is greater than Y, one target physical cell may correspond to a plurality of abnormal physical cells.
S303, transferring the communication service of the abnormal physical cell to the corresponding target physical cell.
In step S303, it can be understood that the uplink data and the downlink data of the abnormal physical cell are transmitted through the hardware and the link associated with the target physical cell.
The following describes a method for migrating a communication service from both the transmission of uplink data and the transmission of downlink data.
In a first aspect, for uplink data (i.e., data sent from a terminal to a base station), migrating a communication service 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 the radio frequency channel associated with the abnormal physical cell and the radio frequency channel associated with the corresponding target physical cell. And 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 that the baseband board of the target physical cell is controlled to be simultaneously used for descrambling the scrambled uplink data of the target physical cell and the scrambled uplink data of the abnormal physical cell, and the uplink data of the target physical cell and the uplink data of the abnormal physical cell are sent to the CU 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 central unit CU through the hardware and link associated with the target physical cell, and then transferred to other devices on the internet through the central unit CU.
In the above processing method, it can be considered that the uplink data of the abnormal physical cell and the uplink data of the corresponding target physical cell are merged.
In a second aspect, for downlink data (i.e., data transmitted from a base station to a terminal), migrating a communication service of an abnormal physical cell to a 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 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 through the second control instruction to perform scrambling processing on the downlink data of the target physical cell and the downlink data of the abnormal physical cell 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 both sent to the RU through the forward transmission link associated with the target physical cell.
And simultaneously, 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. Therefore, 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, and meanwhile, the radio frequency channel corresponding to the abnormal physical cell also 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 abnormal 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 the downlink data from other devices of the internet from the received beam signal.
The processing method may be considered to copy downlink data output by the baseband board corresponding to the target physical cell 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 link associated with the target physical cell are used for processing and transmitting data of the target physical cell and data of the abnormal physical cell.
It should be noted that, when one target physical cell corresponds to a plurality of abnormal physical cells, the migration of the communication service performed in step S303 means that, for one target physical cell, the communication services of all abnormal physical cells corresponding to the target physical cell are migrated to the target physical cell.
The abnormity repairing method provided by the application has the following beneficial effects:
in the first aspect, after detecting the abnormal physical cell, the CU can migrate the communication service of the abnormal physical cell to the corresponding target physical cell in time, so that the terminal of the abnormal physical cell can access the mobile internet through the base station even if the related hardware or link in the base station fails, thereby improving the reliability of the base station.
Moreover, since 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) in which the base station and the terminal generate and analyze the radio signal in the process of performing data interaction with the terminal of the abnormal physical cell by using the hardware and the link associated with the target physical cell by the base station is the same as that in the process of performing data interaction by using 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 a new mobile network due to the change of the physical cell identifier, and the time required for completing the migration of the communication service is short.
Furthermore, because the abnormal physical cell and the target physical cell both belong to the same central 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 transferring the communication service, the time required for completing the transfer of the communication service is further shortened. In summary, the user of the terminal located in the abnormal physical cell does not experience a long-time network outage, and better user experience can be obtained.
On the other hand, the method provided by the application is mainly characterized in that when the hardware or the link associated with the abnormal physical cell fails, the hardware and the link associated with the target physical cell simultaneously support data interaction of the terminal of the target physical cell and the terminal of the abnormal physical cell, 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 data interaction of the terminal of the physical cell associated in a normal state. That is to say, the method provided by the present application is used to implement the abnormal recovery, and it is not necessary to add redundant hardware and redundant link that do not function in the normal state (i.e. are not used to support data interaction of the terminal) in the base station, so as to avoid increasing the construction cost of the base station while ensuring the higher reliability of the base station.
In order to facilitate understanding of the abnormality repairing method provided in the embodiment of the present application, an implementation process of the method is described below with reference to an example.
Assuming that three fronthaul links are detected to have faults in the operation process of the base station, data transmission originally performed through the three fronthaul links cannot be performed, it can be correspondingly determined that physical cells associated with the three fronthaul links are abnormal physical cells, and assuming that physical cells associated with the three fronthaul links, that is, detected abnormal physical cells, are a physical cell a1, a physical cell B1, a physical cell B2, a physical cell C1, a physical cell C2 and a physical cell C3, respectively.
The physical cell id of the physical cell a1 is denoted as PCI-a, and in addition to the abnormal physical cell a1, the PCI-a corresponds to four normal physical cells, which are denoted as physical cells a2 to a4 in sequence.
The physical cell identities of the physical cell B1 and the physical cell B2 are PCI-B, and the PCI-B corresponds to three normal physical cells which are sequentially marked as physical cells B3 to B5.
The physical cell identities of the physical cells C1-C3 are PCI-C, which also corresponds to two normal physical cells, C4 and C5, respectively.
For the abnormal physical cell a1, it may be found that the candidate physical cells corresponding to the abnormal physical cell a1 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 a target physical cell of the abnormal physical cell a1, and then the communication service of the abnormal physical cell a1 is migrated 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 identity PCI-B is greater than the number of abnormal physical cells, the candidate physical cells B3, B4, and B5 may be sorted according to the weight of the load, two candidate physical cells with lighter load are selected as target physical cells of the abnormal physical cells B1 and B2, respectively, and then the migration of the communication service is performed.
For the 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, and assuming that the load of physical cell C4 is light in the two candidate physical cells C4 and C5, physical cell C4 is determined as the target physical cell of abnormal physical cells C1 and C2, physical cell C5 is determined as the target physical cell of abnormal physical cell C3, then, the communication traffic of both abnormal physical cells C1 and C2 is migrated to physical cell C4, and the communication traffic of abnormal physical cell C3 is migrated to physical cell C5.
As can be seen from the anomaly repairing method provided in the foregoing embodiment, in order to implement the anomaly repairing method provided in the present application, the same physical cell identifier needs to be configured in advance for multiple different physical cells in a networking stage.
In addition to the configuration method for preferentially configuring the same physical cell identifier 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 identification for the physical cells according to the preset communication priority of each physical cell.
The number of the identified cells of each physical cell is positively correlated with the communication priority of the physical cell. The co-identified 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, and conversely, 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 the application, when an abnormal physical cell occurs, the hardware and the link of the physical cell having the same PCI with other abnormal physical cells are used as the standby hardware and the standby link of the abnormal physical cell, so that the greater the number of the identified cells corresponding to one physical cell is, the greater the number of the standby hardware and the standby link of the physical cell is, and the more easily 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 spare hardware and spare 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 to represent the importance of signal communication of the physical cell, such as signal communication of terminal devices in facilities such as a public security bureau in a city and a hospital, and the like, and the communication priority of the physical cell in which the facilities are located can be set to be high priority, and the communication priority of the physical cell not including 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, an embodiment of the present application further provides an apparatus for repairing an abnormality, which may be considered as a functional module of a central unit CU integrated in a base station, please refer to fig. 4, and the apparatus may include the following units:
a detecting unit 401, configured to detect whether each physical cell is in an abnormal state in real time.
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.
A migration unit 403, configured to migrate the communication service of the abnormal physical cell to a corresponding target physical cell.
When detecting whether each physical cell is in an abnormal state in real time, the detecting unit 401 is specifically configured to:
detecting in real time whether hardware and links between the concentration unit and the radio communication unit in the base station are in an abnormal state;
wherein, if it is detected that any one of hardware or links located between the concentration unit and the radio communication unit is in an abnormal state, it is detected that a physical cell associated with the hardware or link in the abnormal state is in the abnormal state.
When the determining unit 402 determines a target physical cell for the abnormal physical cell, it is specifically configured to:
identifying at least one physical cell which has the same physical cell identification as the abnormal physical cell and is in a normal state as a candidate physical cell;
and according to a preset selection strategy, selecting one alternative physical cell from at least one alternative physical cell as a target physical cell corresponding to the abnormal physical cell.
The determining unit 402, according to a preset selection policy, specifically configured to, when one candidate physical cell is selected from the 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.
When the migration unit 403 migrates the communication service of the abnormal physical cell to the corresponding target physical cell, the migration unit is specifically configured to:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link which are associated with the target physical cell.
The specific working principle of the abnormality repairing device provided in the embodiment of the present application may refer to relevant steps in the abnormality repairing method provided in any embodiment of the present application, and details are not described here.
The application provides an abnormal recovery device, wherein a detection unit 401 detects whether each physical cell is in an abnormal state in real time; determining section 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 identification with 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 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 can be transferred 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 of terminal off-line of the physical cell caused by the abnormality of the associated hardware and the link is solved without adding redundant equipment.
Embodiments of the present application also provide a base station, which may include various hardware and links as shown in fig. 2, wherein a 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 consisting of a plurality of processors.
The memory 502 may store one or more programs.
The processor 501 may execute one or more programs stored in the memory 502 to implement the exception recovery method provided by any of the embodiments of the present application.
The embodiment of the present application further provides a computer storage medium, which is used to store a computer program, and when the computer program is executed, the computer program is specifically used to implement the abnormality repairing method provided in any embodiment of the present application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.
Those skilled in the art can make or use the present 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 (12)
1. An abnormality repairing 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; 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 each detected physical cell in an abnormal state;
and transferring the communication service of the abnormal physical cell to a corresponding target physical cell.
2. The method of claim 1, wherein the detecting whether each physical cell is in an abnormal state in real time comprises:
detecting in real time whether hardware and links between the concentration unit and the radio communication unit in the base station are in an abnormal state;
wherein, if any one of the hardware or the link between the concentration unit and the radio communication unit is detected to be in an abnormal state, it is detected that a physical cell associated with the hardware or the link in the abnormal state is in the abnormal state.
3. The method of claim 1, wherein determining a target physical cell for the abnormal physical cell comprises:
identifying at least one physical cell which has the same physical cell identification as the abnormal physical cell and is in a normal state as a candidate 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.
4. The method according to claim 3, wherein said selecting, according to a preset selection policy, one candidate physical cell from at least one of the candidate physical cells as a target physical cell corresponding to the abnormal physical cell comprises:
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.
5. The method of claim 1, wherein the migrating the communication service 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 which are associated with the target physical cell.
6. An abnormality repair device, comprising:
the detection unit is used for detecting whether each physical cell is in an abnormal state in real time;
a determining unit, 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 cells refer to each detected physical cell 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.
7. The apparatus according to claim 6, wherein the detecting unit is configured to, when detecting whether each physical cell is in an abnormal state in real time, specifically:
detecting in real time whether hardware and links between the concentration unit and the radio communication unit in the base station are in an abnormal state;
wherein, if any one of the hardware or the link between the concentration unit and the radio communication unit is detected to be in an abnormal state, it is detected that a physical cell associated with the hardware or the link in the abnormal state is in the abnormal state.
8. The apparatus according to claim 6, wherein the determining unit, when determining a target physical cell for the abnormal physical cell, is specifically configured to:
identifying at least one physical cell which has the same physical cell identification as the abnormal physical cell and is in a normal state as a candidate 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.
9. The apparatus according to claim 8, wherein the determining unit is configured to, when selecting, according to a preset selection policy, one candidate physical cell from at least one of the candidate physical cells as the target physical cell corresponding to the abnormal physical cell, specifically:
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.
10. The apparatus according to claim 6, wherein the migration unit, when migrating the communication service of the abnormal physical cell to the corresponding target physical cell, is specifically configured to:
and transmitting the uplink data and the downlink data of the abnormal physical cell through the hardware and the link which are associated with the target physical cell.
11. 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 exception repair method of any of claims 1 to 5.
12. A computer storage medium storing a computer program which, when executed, is particularly adapted to implement the method of anomaly recovery according to any one of claims 1 to 5.
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