Automatic Reconnection Method and Device for Distributed Unit and Central Unit of Base Station

Abstract

The present application discloses an automatic reconnection method and device for a distributed unit and a central unit of a base station. In view of the problem of data loss in the distributed unit, the following technical solutions are provided. When the connection between the first distributed unit and the central unit fails, the first distributed unit scans neighboring cells through the SON function module; in the neighboring cells, the second distributed unit is determined; the first distributed unit and the second distributed unit are communicatively connected through the Xn interface; the first distributed unit sends a request to the second distributed unit to obtain the configuration data of the central unit for configuring the first distributed unit; the second distributed unit responds to the request and sends the configuration data of the central unit for the second distributed unit to the first distributed unit; the first distributed unit reconfigures the first distributed unit according to the configuration data so as to connect to the central unit. Through the SON function module and the Xn interface, the central unit reconfigures the data for the first distributed unit according to the configuration data of the second distributed unit.

Description

Technical Field

[0001] The present invention relates to the field of 5G wireless communication technologies, and more specifically, to a method and device for automatic reconnection between a distributed unit and a central unit of a base station. Background Art

[0002] Mobile communication is a modern technology for wireless communication. Currently, mobile communication technologies have entered the fifth-generation development era (5G mobile communication technologies).

[0003] The main coverage frequency band of the 5G communication system has been increased from 1.8 - 2.3 GHz to 2.6 - 4.9 GHz. As the electromagnetic wave frequency increases, the ability of the electromagnetic wave to cross obstacles decreases. Therefore, more 5G small base stations need to be set up. 5G small base stations not only overcome the above problems from the technical source, but also have the advantages of easy fiber deployment and construction, flexible expansion, support for visual operation and maintenance, etc. At the same time, they can significantly improve the network capacity and network operation and maintenance efficiency.

[0004] Existing 5G base stations adopt an architecture in which a central unit (configured in a central computer room) and a distributed unit (configured in a site computer room) are separated. Site computer rooms are often configured in small base stations. One central computer room is communicatively connected to multiple site computer rooms. Each site computer room is configured with a distributed unit, and multiple distributed units are all communicatively connected to one central unit. The central unit and the distributed unit are divided according to the R15 communication protocol, so that the distributed unit bears part of the functions of the Media Access Control (MAC) function unit or the Physical (PHY) interface transceiver, and the central unit bears the function of the Self Organization Network (SON) function unit. After the central unit transmits data to the distributed unit, the distributed unit can perform the next step of work.

[0005] In the process of implementing the existing technology, the inventor found that:

[0006] When the distributed unit loses data, it cannot re-obtain the lost data, resulting in the inability of the distributed unit to work properly. Therefore, it is necessary to sink part of the SON function of the central unit to the distributed unit, and then through the Xn interface, the distributed unit can re-obtain data from the central unit, so as to automatically recover the lost data and avoid the situation where the work of the distributed unit is blocked due to the loss of data, and there is room for improvement. Summary of the Invention

[0007] Aiming at the deficiencies of the existing technology, the first object of the present invention is to provide an automatic reconnection method for the distributed unit and the central unit of a base station. Through the Xn interface, the configuration data of the second distributed unit is sent to the first distributed unit, and the first distributed unit requests reconfiguration data from the central module according to the configuration data of the second distributed unit by the SON function module, so that the first distributed unit can re-obtain the data.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An automatic reconnection method for the distributed unit and the central unit of a base station, comprising the following steps:

[0010] When the connection between the first distributed unit and the central unit fails, the first distributed unit scans the neighboring cells through the SON function module;

[0011] In the scanned neighboring cells, determine the second distributed unit;

[0012] The first distributed unit and the second distributed unit are communicatively connected through the Xn interface;

[0013] The first distributed unit sends a request to the second distributed unit to obtain the configuration data of the central unit for configuring the first distributed unit;

[0014] The second distributed unit responds to the request and sends the configuration data of the central unit for the second distributed unit to the first distributed unit;

[0015] The first distributed unit reconfigures the first distributed unit according to the configuration data so as to connect to the central unit.

[0016] Further, when the connection between the first distributed unit and the central unit fails, the first distributed unit scans the neighboring cells through the SON function module, specifically including the following steps:

[0017] The first distributed unit detects whether data is obtained. When the first distributed unit obtains data, the first distributed unit detects whether the obtained data is complete;

[0018] When the data is incomplete or no data is obtained, it is determined that the connection between the first distributed unit and the central unit fails;

[0019] When the connection between the first distributed unit and the central unit fails, the first distributed unit starts the SON function module, and the SON function module scans the neighboring cells according to the default operating frequency point.

[0020] Further, it further includes the following steps:

[0021] When the data detected by the first distributed unit is complete, it is determined that the connection between the first distributed unit and the central unit is successful;

[0022] When the connection between the first distributed unit and the central unit is successful, the first distributed unit provides services for the cell according to the configuration data.

[0023] Furthermore, in the scanned neighboring cells, a second distributed unit is determined, which specifically includes the following steps:

[0024] During the process of the SON function module scanning the neighboring cells, it attempts to establish a connection;

[0025] When the connection fails, the SON function module rescans the neighboring cells;

[0026] When the connection is successful, the second distributed unit is determined, and the SON function module stops scanning the neighboring cells.

[0027] Furthermore, the first distributed unit sends a request to the second distributed unit to obtain the configuration data of the central unit for configuring the first distributed unit, which specifically includes the following steps:

[0028] The first distributed unit sends a signal indicating that the number of cells served by the first distributed unit is zero to the second distributed unit;

[0029] Based on the signal indicating that the number of cells served by the first distributed unit is zero, the second distributed unit determines the signal for the first distributed unit to request the service cell information of the second distributed unit and the address signal of the central unit connected to the second distributed unit, so that the first distributed unit can establish a connection with the central unit.

[0030] Furthermore, the second distributed unit responds to the request and sends the configuration data of the central unit for the second distributed unit to the first distributed unit, which specifically includes the following steps:

[0031] The second distributed unit sends a response signal to the first distributed unit;

[0032] The second distributed unit sends the service cell information signal of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the first distributed unit.

[0033] Furthermore, the first distributed unit reconfigures the first distributed unit according to the configuration data to connect to the central unit, which specifically includes the following steps:

[0034] The first distributed unit obtains the information signal of the service cells of the second distributed unit and the address signal of the central unit connected to the second distributed unit;

[0035] The first distributed unit establishes a connection with the central unit according to the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit;

[0036] The first distributed unit sends the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the central unit;

[0037] According to the correspondence between the information of the serving cell of the second distributed unit and the address of the second distributed unit, the central unit determines that the first distributed unit requests to obtain the information of the serving cell of the first distributed unit corresponding to the address of the first distributed unit;

[0038] The central unit sends the information signal of the serving cell of the first distributed unit to the first distributed unit.

[0039] Aiming at the deficiencies of the prior art, the second object of the present invention is to provide an automatic reconnection device for the distributed unit and the central unit of a base station, which has the advantage of requesting the central unit to reconfigure data when the distributed unit loses data.

[0040] To achieve the above object, the present invention provides the following technical solutions:

[0041] An automatic reconnection device for the distributed unit and the central unit of a base station, comprising:

[0042] A central unit for configuring data;

[0043] A first distributed unit for receiving the configuration data of the central unit and providing services for the cell according to the data;

[0044] The first distributed unit is provided with a SON function module, and the SON function module is used to scan neighboring cells to determine a second distributed unit that establishes an Xn interface and a communication connection with the first distributed unit;

[0045] The second distributed unit is used to provide the configuration data of the central unit for the second distributed unit to the first distributed unit, so that the first distributed unit requests the central unit to reconfigure data for the first distributed unit according to the configuration data of the central unit for the second distributed unit.

[0046] Further, the first distributed unit is provided with a detection data function module, and the detection data function module is used to judge whether the first distributed unit is connected to the central unit.

[0047] Further, the first distributed unit is provided with a detection interface function module, which is used to detect whether other distributed units scanned by the SON function module can establish an Xn interface with the first distributed unit and communicate with each other.

[0048] In summary, the present invention has the following beneficial effects:

[0049] 1. The SON function module has the function of scanning neighboring cells. Through the SON function module, the first distributed unit finds the second distributed unit. Both the first distributed unit and the second distributed unit are provided with Xn interfaces. Since the interfaces of the first distributed module and the second distributed module are the same, the first distributed module and the second distributed unit can communicate with each other. The first distributed unit sends a request to the second distributed unit. The content of the request is to send the service cell information allocated by the central unit to the second distributed unit and the address of the central unit to the first distributed unit. The second distributed unit sends the service cell information allocated by the central unit to the second distributed unit and the address of the central unit to the first distributed unit.

[0050] 2. The first distribution unit initiates a connection to the central unit according to the service cell information of the second distributed unit and the address between the second distributed unit and the central unit, and requests the central unit to reconfigure data for the first distributed unit. According to the address information of the connection between the second distributed unit and the central unit, the central unit knows that the service cell information of the second distributed unit is obtained by allocation from the central unit, and thus knows that the first distributed unit wants to re-obtain the cell information served by the first distributed unit from the central unit. The central unit re-sends the data configured for the first distributed unit to the first distributed unit. The first distributed unit obtains complete data. Description of the Drawings

[0051] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0052] Figure 1 It is a schematic flowchart of the method for automatic reconnection of the distributed unit and the central unit of the base station.

[0053] Figure 2 It is Figure 1 a specific schematic flowchart of the first distributed unit scanning neighboring cells through the SON function module when the connection between the first distributed unit and the central unit fails in

[0054] Figure 3 It is Figure 1 a specific schematic flowchart of determining the second distributed unit among the scanned neighboring cells in

[0055] Figure 4 For Figure 1 Figure 1 The specific process schematic diagram of the first distributed unit in [[ID=]] sending a request to the second distributed unit to obtain the configuration data of the first distributed unit of the central unit.

[0056] Figure 5 For Figure 1 Figure 1 The specific process schematic diagram of the second distributed unit in [[ID=]] responding to the request and sending the configuration data of the central unit for the second distributed unit to the first distributed unit.

[0057] Figure 6 For Figure 1 Figure 1 The specific process schematic diagram of the first distributed unit in [[ID=]] reconfiguring the first distributed unit according to the configuration data to connect to the central unit.

[0058] Figure 7 The structural schematic diagram of the automatic reconnecting device between the distributed unit and the central unit of the base station. Detailed implementation manners

[0059] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0060] The present invention provides an automatic reconnecting method between a distributed unit and a central unit of a base station. Refer to Figure 1 , including the following steps:

[0061] S100: When the connection between the first distributed unit and the central unit fails, the first distributed unit scans neighboring cells through the SON function module.

[0062] In the present invention, the first distributed unit is arranged in the site computer room of the 5G base station split architecture. The distributed unit is used to provide wireless communication services for the served cell according to the data allocated by the central unit. The central unit is arranged in the central computer room of the 5G base station split architecture. The central unit is used to configure data for the distributed unit. One central unit is connected to multiple distributed units. One distributed unit can only be connected to one central unit. The distributed unit and the central unit are connected by optical fiber. The first distributed unit is one of the multiple distributed units. The SON function module is a module that realizes the autonomous function of the wireless network. The SON function module has the function of scanning neighboring cells. When the connection between the first distributed unit and the central unit fails, that is, when the first distributed unit cannot receive the data configured by the central unit or the data received by the first distributed unit is incomplete, the first distributed unit starts the SON function module. The SON function module scans the distributed units of the small base stations in the neighboring cells and attempts to establish a connection between the first distributed unit and other distributed units.

[0063] S200: Determine the second distributed unit among the scanned neighboring cells.

[0064] In the present invention, the central units to which the first distributed unit and the second distributed unit are connected may be the same or different, which increases the applicable scope of this method. One distributed unit can only be connected to one central unit. It is determined that the source of the data configured for one distributed unit can only be one central unit to avoid data confusion and thus improve work efficiency. The two distributed units are from the same manufacturer, so the connection interfaces of the two distributed units are the same. A wireless communication connection can be established between two distributed units with the same interface. The SON function module finds that the interface of the second distributed unit is the same as that of the first distributed unit, and thus determines that the second distributed unit can establish a communication connection with the first distributed unit. The first distributed unit prepares to establish a communication connection with the second distributed unit.

[0065] S300: The first distributed unit and the second distributed unit are communicatively connected through the Xn interface.

[0066] In the present invention, the Xn interface is a type of IP interface. The Xn interface is used to connect two communication devices. Both the first distributed unit and the second distributed unit are configured with the Xn interface, so the first distributed unit and the second distributed unit can be communicatively connected.

[0067] S400: The first distributed unit sends a request to the second distributed unit to obtain the configuration data of the first distributed unit configured by the central unit.

[0068] In the present invention, the content of the data is the information of the cell that the distributed unit needs to serve and the address of the central unit. After the first distributed unit establishes a connection with the second distributed unit, the first distributed unit sends a request to the second distributed unit. The content of the request is: the information of the serving cell configured by the central unit for the first distributed unit and the address of the central unit. Specifically, the content of the request may be: the number of serving cells of the first distributed unit is zero.

[0069] S500: The second distributed unit responds to the request and sends the configuration data of the central unit for the second distributed unit to the first distributed unit.

[0070] In the present invention, the second distributed unit sends the information of the serving cell of the second distributed unit and the address of the central unit to the first distributed unit through the Xn interface. The first distributed unit prepares to communicate with the central unit according to the information of the serving cell of the second distributed unit and the address information of the central unit.

[0071] S600: The first distributed unit reconfigures the first distributed unit according to the configuration data to connect with the central unit.

[0072] In the present invention, the first distributed unit sends the information of the serving cell of the second distributed unit and the address information of the central unit to the central unit. After receiving the information, the central unit resends the cell information of the service area required by the first distributed unit to the first distributed unit. The first distributed unit provides communication services for the served cells according to the cell information resent by the central unit.

[0073] It can be understood that the first distributed unit is provided with an Xn interface. Through the SON function module, the first distributed unit discovers that the second distributed unit is also provided with an Xn interface. Since the interfaces of the first distributed module and the second distributed module are the same, the first distributed module and the second distributed unit can communicate and connect. The first distributed unit sends a request signal to the second distributed unit. The request signal may be that the number of serving cells of the first distributed unit is zero. After receiving the signal, the second distributed unit sends the serving cell information signal of the second distributed unit and the address signal of the central unit to the first distributed unit. The first distributed unit sends the serving cell information signal of the second distributed unit and the address signal of the central unit to the central unit. The central unit sends the serving cell information signal of the first distributed unit to the first distributed unit. After receiving the serving cell information, the first distributed unit starts to provide communication services for the cell.

[0074] Further, referring to Figure 2 , step S100 specifically includes the following steps:

[0075] S101: The first distributed unit detects whether it has obtained data. When the first distributed unit has obtained data, the first distributed unit detects whether the obtained data is complete.

[0076] In the present invention, when the first distributed unit does not receive a signal from the central unit, it is determined that the first distributed unit has not obtained data. The connection between the first distributed unit and the central unit fails. When the first distributed unit receives the information signal of the serving cell sent by the central unit, it detects whether the information is complete. When the information is incomplete, it is determined that the connection between the first distributed unit and the central unit fails. When the information is complete, it is determined that the connection between the first distributed unit and the central unit is successful.

[0077] S102: When the data is incomplete or no data is obtained, it is determined that the connection between the first distributed unit and the central unit fails.

[0078] In the present invention, if the connection between the first distributed unit and the central unit fails, the data received by the first distributed unit is incomplete or no data is obtained. At this time, the first distributed unit is ready to establish a connection with the second distributed unit so that the first distributed unit can obtain the serving cell information of the second distributed unit and the address of the central unit. If the data received by the first distributed unit is complete, the connection between the first distributed unit and the central unit is successful. The first distributed unit provides communication services for the cell according to the complete data.

[0079] S103: When the connection between the first distributed unit and the central unit fails, the first distributed unit activates the SON function module, and the SON function module scans neighboring cells according to the default operating frequency point.

[0080] In the present invention, the connection between the first distributed unit and the central unit fails. That is, the data allocated to the first distributed unit is incomplete or no data is allocated. At this time, the SON function module on the first distributed unit scans the surrounding wireless environment. The SON function module obtains information such as the frequency points of surrounding base stations, IP addresses, and the IP addresses of the cells where the surrounding base stations are located. The frequency point refers to the frequency band information of the base station's operation. The SON function module determines whether the interface of the other distributed unit is an Xn interface according to the scanned frequency points, IP addresses, etc. If it is an Xn interface, the SON function module determines that the other party is the second distributed unit and sends a signal to establish a communication connection with the second distributed unit to the first distributed unit.

[0081] Further, referring to Figure 2 , the following steps are further included:

[0082] S104: When the data detected and obtained by the first distributed unit is complete, it is determined that the connection between the first distributed unit and the central unit is successful.

[0083] In the present invention, if the first distributed unit obtains the information of the served cell in its entirety, it indicates that the connection between the first distributed unit and the central unit is intact. The first distributed unit deploys the required communication services for the corresponding cell according to the information of the served cell in its entirety, so that all cells are served, improving the reliability of the service.

[0084] S105: When the connection between the first distributed unit and the central unit is successful, the first distributed unit provides services for the cell according to the configuration data.

[0085] In the present invention, the service provided for the cell refers to the communication service. The connection between the first distributed unit and the central unit is successful. That is, the first distributed unit obtains the information of the served cell in its entirety. The first distributed unit starts to deploy the work of establishing a communication connection with the AAU / RRU according to the information of the served cell, so as to provide communication services for the specified cell.

[0086] It can be understood that by detecting whether the first distributed unit receives data and whether the received data is complete, the first distributed unit obtains the judgment result of the connection situation with the central unit. This method ensures that when it is determined that the connection between the first distributed unit and the central unit is disconnected, the first distributed unit starts the scanning step of the SON function module. This method also ensures that when it is determined that the connection between the first distributed unit and the central unit is normal, the first distributed unit starts to provide communication services for the configured cell, increasing the reliability of communication.

[0087] Further, referring to Figure 3 , S200 specifically includes the following steps:

[0088] S201: During the process of the SON function module scanning neighboring cells, it attempts to establish a connection.

[0089] In the present invention, the SON function module scans the surrounding wireless environment to obtain information such as the frequency points, IDs, and cell IDs of the surrounding small base stations. The SON function module determines whether there is an interface that is the same as the interface of the first distributed unit according to the obtained information, so that the first distributed unit can establish a communication connection with other surrounding distributed units.

[0090] S202: When the connection fails, the SON function module re-scans the neighboring cells.

[0091] In the present invention, the SON function module determines whether the communication interface of the distributed unit of the other party is an Xn interface according to the frequency point, ID, and cell ID information signal of the surrounding small base stations. When the communication interface of the other party is not an Xn interface, the first distributed unit cannot establish a communication connection with the other party. The connection between the first distributed unit and the other party fails. The SON function module continues to scan, searches for the next distributed unit, and attempts to establish a connection to ensure that the first distributed unit can communicate with other distributed units.

[0092] S203: When the connection is successful, determine the second distributed unit, and the SON function module stops scanning the neighboring cells.

[0093] In the present invention, when the SON function module determines that the communication interface of the distributed unit of the other party is an Xn interface, the first distributed unit can establish a communication connection with the other party. Two distributed units with the same Xn interface can communicate signals according to the same communication protocol. The SON function module marks the distributed unit being connected as the second distributed unit. At this time, the SON function module completes the search work and stops scanning the surrounding wireless environment.

[0094] It can be understood that the SON function module continuously scans the distributed units in the surrounding wireless environment. When a distributed unit that can also use the Xn interface is found, the SON function module stops the scanning work and marks the found distributed unit as the second distributed unit to ensure that the first distributed unit can communicate with other distributed units, thereby ensuring that the first distributed unit obtains the serving cell information of the second distributed unit.

[0095] Further, referring to Figure 4 , S400 specifically includes the following steps:

[0096] S401: The first distributed unit sends a signal indicating that the number of cells served by the first distributed unit is zero to the second distributed unit.

[0097] In the present invention, since the data configured by the first distributed unit is incomplete or no data is configured, the number of cells served by the first distributed unit is zero. The first distributed unit sends a signal indicating that the number of cells served is zero to the second distributed unit.

[0098] S402: According to the signal indicating that the number of cells served by the first distributed unit is zero, the second distributed unit determines the signal for the first distributed unit to request to obtain the serving cell information of the second distributed unit and the address signal of the central unit connected to the second distributed unit, so that the first distributed unit can establish a connection with the central unit.

[0099] In the present invention, the second distributed unit receives the signal sent by the first distributed unit. According to the information that the number of cells served by the first distributed unit is zero, the second distributed unit sends the service cell information signal of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the first distributed unit.

[0100] It can be understood that the first distributed unit cannot obtain the number of serving cells from incomplete data or no data. Therefore, the number of cells served by the first distributed unit is zero. According to the information that the number of serving cells of the first distributed unit is zero, the second distributed unit sends the service cell information signal of the second distributed unit and the connection address signal between the second distributed unit and the central unit to the first distributed unit. The first distributed unit sends the information of the service cells of the second distributed unit and the connection address between the second distributed unit and the central unit to the central unit, so that the central unit sends the service cell information signal of the first distributed unit to the first distributed unit.

[0101] Further, referring to Figure 5 , S500 specifically includes the following steps:

[0102] S501: The second distributed unit sends a response signal to the first distributed unit.

[0103] In the present invention, the second distributed unit sends a response signal to the first distributed unit, so that the first distributed unit is ready to receive the service cell information signal of the second distributed unit and the address signal of the central unit, thereby enabling the first distributed unit to determine that a connection has been established with the second distributed unit.

[0104] S502: The second distributed unit sends the service cell information signal of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the first distributed unit.

[0105] In the present invention, after sending the response signal, the second distributed unit sends the service cell information signal of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the first distributed unit, so that the first distributed unit can obtain the data configured by the central unit for the second distributed unit.

[0106] Further, referring to Figure 6 , S600 specifically includes the following steps:

[0107] S601: The first distributed unit obtains the service cell information signal of the second distributed unit and the address signal of the central unit connected to the second distributed unit.

[0108] In the present invention, the first distributed unit obtains the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit, so that the first distributed unit prepares for the connection between the first distributed unit and the central unit.

[0109] S602: According to the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit, the first distributed unit establishes a connection with the central unit.

[0110] In the present invention, according to the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit, the first distributed unit establishes a connection with the central unit, so that the first distributed unit prepares for the communication with the central unit.

[0111] S603: The first distributed unit sends the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the central unit.

[0112] In the present invention, the first distributed unit sends the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the central unit, so that the central unit prepares for providing the serving cell information for the first distributed unit.

[0113] S604: According to the correspondence between the information of the serving cell of the second distributed unit and the address of the second distributed unit, the central unit determines that the first distributed unit requests to obtain the information of the serving cell of the first distributed unit corresponding to the address of the first distributed unit.

[0114] In the present invention, the central unit determines that the first distributed unit requests to obtain the information of the serving cell of the first distributed unit corresponding to the address of the first distributed unit according to the information of the serving cell of the second distributed unit and the correspondence between the information of the serving cell of the second distributed unit and the address of the second distributed unit, so that the central unit prepares for reconfiguring the data for the first distributed unit.

[0115] It can be understood that there is a mapping relationship between the address of the distributed unit and the serving cell of the distributed unit in the database of the central unit. That is to say, the address of the second distributed unit and the information of the serving cell of the second distributed unit conform to the corresponding function mapping relationship.

[0116] In a specific embodiment provided by the present application, when the second distributed unit sends the address of the second distributed unit, the serving cell information of the second distributed unit, and the address of the first distributed unit to the central unit, the central unit, according to the preset identification rules, identifies the missing information as the serving cell information of the first distributed unit. The central unit obtains the serving cell information corresponding to the address of the first distributed unit from the database, sends it to the second distributed unit, and the second distributed unit forwards it to the first distributed unit. It should be noted that the serving cell information of the first distributed unit here is only a specific configuration data and should not be construed as a substantial limitation on the protection scope of the present application. Similarly, the way for the central unit to identify the default configuration data is also a specific example and should not be regarded as a substantial limitation on the protection scope of the present application.

[0117] S605: The central unit sends the serving cell information signal of the first distributed unit to the first distributed unit.

[0118] In the present invention, after receiving the request signal from the first distributed unit, the central unit sends the serving cell information signal of the first distributed unit to the first distributed unit so that the first distributed unit can re-obtain the complete serving cell information.

[0119] It can be understood that the first distribution unit establishes a connection with the central unit according to the serving cell information of the second distributed unit and the address between the second distributed unit and the central unit to request the central unit to reconfigure data for the first distributed unit. The central unit prepares the cell information served by the first distributed unit according to the serving cell information of the second distributed unit and the address information of the connection between the second distributed unit and the central unit. The central unit re-sends the cell information signal served by the first distributed unit to the first distributed unit. The first distributed unit starts to provide communication services for the cell according to the complete data.

[0120] The present invention also provides an automatic reconnection device for the distributed unit and the central unit of a base station, which is adapted to an automatic reconnection method for the distributed unit and the central unit of a base station. See Figure 7 , including:

[0121] A central unit for configuring data;

[0122] A first distributed unit for receiving the configuration data from the central unit and providing services for the cell according to the data;

[0123] The first distributed unit is provided with a SON function module, and the SON function module is used to scan neighboring cells to determine the second distributed unit that establishes an Xn interface and a communication connection with the first distributed unit;

[0124] The second distributed unit is used to provide the configuration data of the central unit for the first distributed unit, so that the first distributed unit requests the central unit to reconfigure the data for the first distributed unit according to the configuration data of the central unit for the second distributed unit.

[0125] In the present invention, the central unit is arranged in the central computer room of the 5G base station separation architecture. The central unit is used to configure data for the distributed unit. The distributed unit is arranged in the site computer room of the 5G base station separation architecture. The distributed unit is used to provide wireless communication services for the served cell according to the data allocated by the central unit. One central unit is connected to multiple distributed units. One distributed unit can only be connected to one central unit. The distributed unit and the central unit are connected by optical fiber. The first distributed unit is one of the multiple distributed units.

[0126] The SON function module is a module that realizes the autonomous functions of the wireless network. The SON function module has the function of scanning neighboring cells. The Xn interface is a kind of interface belonging to the IP interface. The Xn interface is used to connect two communication devices. During the process of scanning neighboring cells, the SON function module obtains information such as the frequency points of surrounding base stations, IP addresses, and the IP addresses of the cells where the surrounding base stations are located. The frequency point refers to the frequency band information of the base station working.

[0127] When the connection between the first distributed unit and the central unit fails, that is, when the first distributed unit cannot receive the configuration data of the central unit or the data received by the first distributed unit is incomplete, the first distributed unit starts the SON function module. The SON function module scans the distributed units of small base stations in neighboring cells. The SON function module detects whether the interface of the other party's distributed unit is an Xn interface according to the scanned frequency points, IP addresses and other information. If it is an Xn interface, the SON function module determines that the other party is the second distributed unit and attempts to establish a communication connection between the first distributed unit and the second distributed unit, so that the first distributed unit prepares for the communication with the second distributed unit.

[0128] The data configured by the central unit for the first distributed unit and the second distributed unit are respectively: the information of the cell that the first distributed unit needs to serve, and the information of the cell that the second distributed unit needs to serve.

[0129] After the first distributed unit establishes a connection with the second distributed unit, the first distributed unit sends an information signal of the serving cell of the first distributed unit to the first distributed unit. After receiving the signal, the second distributed unit sends an information signal of the serving cell of the second distributed unit and an address information signal of the central unit to the first distributed unit. The first distributed unit sends the information signal of the serving cell of the second distributed unit and the address information signal of the central unit to the central unit. After receiving the signal, the central unit sends an information signal of the serving cell of the first distributed unit to the first distributed unit. The first distributed unit reacquires the complete data.

[0130] It can be understood that through the SON function module, the first distributed unit finds the second distributed unit. Both the first distributed unit and the second distributed unit can use the Xn interface. Since the interfaces of the first distributed module and the second distributed module are the same, the first distributed module and the second distributed unit can communicate and connect. The first distributed unit sends a request to the second distributed unit. The content of the request is to send the information signal of the serving cell allocated by the central unit to the second distributed unit and the address signal of the central unit to the first distributed unit. The second distributed unit sends the information signal of the serving cell of the second distributed unit and the address signal of the central unit to the first distributed unit. The first distributed unit sends the information signal of the serving cell of the second distributed unit and the address signal of the central unit to the central unit. The central unit reallocates the information of the cell served by the first distributed unit to the first distributed unit. The first distributed unit obtains the information of the serving cell allocated by the central unit and can provide communication services for the allocated cell.

[0131] Further, referring to Figure 7 , the first distributed unit is provided with a detection data function module, and the detection data function module is used to determine whether the first distributed unit is connected to the central unit.

[0132] It can be understood that when the detection data function module detects that the first distributed unit does not receive the configured data, the detection data function module determines that the first distributed unit is not connected to the central unit. When the detection data function module detects that the first distributed unit receives the configured data, the detection data function module detects whether the configured data of the first distributed unit is complete. When the detection data function module detects that the configured data of the first distributed unit is incomplete, the detection data function module determines that the first distributed unit is not connected to the central unit. When the detection data function module detects that the configured data of the first distributed unit is complete, the detection data function module determines that the first distributed unit is normally connected to the central unit. When the first distributed unit is not connected to the central unit, the first distributed module is ready to perform the next scan of the SON function module to connect the first distributed module and the second distributed module.

[0133] Further, referring to Figure 7 , the first distributed unit is further provided with a detection interface function module, and the detection interface function module is used to detect whether other distributed units scanned by the SON function module can establish an Xn interface and a communication connection with the first distributed unit.

[0134] It can be understood that the detection interface function module determines whether the interface of the other distributed unit is an Xn interface according to the information such as the frequency points and IP addresses scanned by the SON function module. If it is an Xn interface, the detection interface function module sends a signal indicating that the interface of the other distributed unit is an Xn interface to the SON function module. After receiving the signal, the SON function module determines that the other party is the second distributed unit and attempts to establish a communication connection between the first distributed unit and the second distributed unit, so as to prepare the first distributed unit for communication with the second distributed unit.

[0135] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0136] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A method for automatic reconnection between a distributed unit and a central unit of a base station, characterized in that, it includes the following steps: When the connection between the first distributed unit and the central unit fails, the first distributed unit scans neighboring cells through the SON function module; In the scanned neighboring cells, determine the second distributed unit; The first distributed unit and the second distributed unit are communicatively connected through the Xn interface; The first distributed unit sends a request to the second distributed unit to obtain the configuration data of the central unit for configuring the first distributed unit; The second distributed unit responds to the request and sends the configuration data of the central unit for the second distributed unit to the first distributed unit; The first distributed unit reconfigures the first distributed unit according to the configuration data so as to connect to the central unit.

2. The method for automatic reconnection between a distributed unit and a central unit of a base station according to claim 1, characterized in that, When the connection between the first distributed unit and the central unit fails, the first distributed unit scans neighboring cells through the SON function module, which specifically includes the following steps: The first distributed unit detects whether data is obtained. When the first distributed unit obtains data, the first distributed unit detects whether the obtained data is complete; When the data is incomplete or no data is obtained, it is determined that the connection between the first distributed unit and the central unit fails; When the connection between the first distributed unit and the central unit fails, the first distributed unit activates the SON function module, and the SON function module scans neighboring cells according to the default operating frequency point.

3. The method for automatic reconnection between a distributed unit and a central unit of a base station according to claim 2, characterized in that, It further includes the following steps: When the data obtained by the first distributed unit is complete, it is determined that the connection between the first distributed unit and the central unit is successful; When the connection between the first distributed unit and the central unit is successful, the first distributed unit provides services for the cell according to the configuration data.

4. The method for automatic reconnection between a distributed unit and a central unit of a base station according to claim 1, characterized in that, In the scanned neighboring cells, determining the second distributed unit specifically includes the following steps: During the process of the SON function module scanning neighboring cells, it attempts to establish a connection; When the connection fails, the SON function module re-scans the neighboring cells; When the connection is successful, determine the second distributed unit, and the SON function module stops scanning neighboring cells.

5. The method for automatic reconnection between a distributed unit and a central unit of a base station according to claim 1, characterized in that, The first distributed unit sending a request to the second distributed unit to obtain the configuration data of the central unit for configuring the first distributed unit specifically includes the following steps: The first distributed unit sends a signal indicating that the number of cells served by the first distributed unit is zero to the second distributed unit; According to the signal indicating that the number of cells served by the first distributed unit is zero, the second distributed unit determines the signal for the first distributed unit to request to obtain the service cell information of the second distributed unit and the address signal of the central unit connected to the second distributed unit, so that the first distributed unit can establish a connection with the central unit.

6. The method for automatic reconnection between a distributed unit and a central unit of a base station according to claim 1, characterized in that, In response to the request, the second distributed unit sends the configuration data of the central unit for the second distributed unit to the first distributed unit, which specifically includes the following steps: The second distributed unit sends a response signal to the first distributed unit. The second distributed unit sends the serving cell information signal of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the first distributed unit.

7. The method for automatic reconnection between the distributed unit and the central unit of the base station according to claim 1, wherein, The first distributed unit reconfigures the first distributed unit to connect to the central unit according to the configuration data, which specifically includes the following steps: The first distributed unit obtains the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit. According to the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit, the first distributed unit establishes a connection with the central unit. The first distributed unit sends the information signal of the serving cell of the second distributed unit and the address signal of the central unit connected to the second distributed unit to the central unit. According to the correspondence between the serving cell information of the second distributed unit and the address of the second distributed unit, the central unit determines that the first distributed unit requests to obtain the information of the serving cell of the first distributed unit corresponding to the address of the first distributed unit. The central unit sends the information signal of the serving cell of the first distributed unit to the first distributed unit.

8. An apparatus for automatic reconnection between the distributed unit and the central unit of a base station, wherein, it includes: A central unit for configuring data; A first distributed unit for receiving the configuration data of the central unit and providing services for the cell according to the data; The first distributed unit is provided with a SON function module, and the SON function module is used to scan neighboring cells to determine a second distributed unit that establishes an Xn interface and a communication connection with the first distributed unit; The second distributed unit is used to provide the configuration data of the central unit for the second distributed unit to the first distributed unit, so that the first distributed unit requests the central unit to reconfigure the data for the first distributed unit according to the configuration data of the central unit for the second distributed unit.

9. The apparatus for automatic reconnection between the distributed unit and the central unit of the base station according to claim 8, wherein, The first distributed unit is provided with a detection data function module, and the detection data function module is used to determine whether the first distributed unit is connected to the central unit.

10. The apparatus for automatic reconnection between the distributed unit and the central unit of the base station according to claim 8, wherein, The first distributed unit is further provided with a detection interface function module, and the detection interface function module is used to detect whether other distributed units scanned by the SON function module can establish an Xn interface and a communication connection with the first distributed unit.

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