Configuration method, unit and system of auxiliary carrier, electronic equipment and storage medium

Abstract

Provided are a configuration method, unit and system for a secondary carrier, an electronic device and a storage medium, the method being suitable for a primary distribution unit in a primary base station corresponding to a user equipment (UE), the method comprising: determining a to-be-aggregated secondary carrier according to a secondary cell pre-establishment list cell in a UE context modification request; sending an auxiliary carrier establishment request to an auxiliary distribution unit based on a carrier aggregation cooperative relationship of the auxiliary distribution unit corresponding to the auxiliary carrier to be aggregated, the auxiliary carrier establishment request including a mobility limit list cell in the UE context modification request; and determining a UE context modification response message based on an auxiliary carrier establishment success response message corresponding to the auxiliary carrier establishment request, so that the to-be-aggregated auxiliary carrier is configured for user equipment UE based on the UE context modification response message. According to the method, the direct communication between the main distribution unit and the auxiliary distribution unit is realized, the cross-station auxiliary carrier can be quickly added to the user equipment, and the data information transmission efficiency is remarkably improved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and particularly to a method, unit, system, electronic device, and storage medium for configuring a secondary carrier. Background Art

[0002] A carrier refers to the frequency of an electromagnetic wave used by a base station to transmit information. During the signal transmission process, the signal is not directly transmitted, but is loaded onto a wave with a fixed frequency. The above process is called loading, and the fixed frequency is called the carrier frequency. In other words, a lower signal frequency is modulated onto a relatively higher frequency. The relatively higher frequency modulated by the lower frequency is called the carrier frequency, also known as the base frequency.

[0003] Carrier Aggregation (CA) is a technology that combines multiple independent carrier channels to increase the bandwidth and thereby improve the data rate and capacity. Carrier aggregation is divided into three combination methods: in-band continuous, in-band discontinuous, and inter-band discontinuous, with the implementation complexity increasing in turn. During the operator's network deployment process, there are differences in the coverage capabilities of different frequency bands, and there are often situations where some terminals are simultaneously covered by carriers from different sites. From the perspective of carrier aggregation, there is a need to add cross-site secondary carriers. Summary of the Invention

[0004] The present disclosure provides a method, unit, system, electronic device, and storage medium for configuring a secondary carrier to improve the configuration efficiency of cross-site secondary carriers.

[0005] In a first aspect, an embodiment of the present disclosure provides a method for configuring a secondary carrier, which is applicable to a master distribution unit (DU) included in a master base station corresponding to a user equipment (UE). The method includes:

[0006] Determining the secondary carriers to be aggregated according to the secondary cell pre-establishment list cell in the UE context modification request;

[0007] Based on the carrier aggregation cooperation relationship of the secondary distribution unit corresponding to the secondary carriers to be aggregated, sending a secondary carrier establishment request to the secondary distribution unit, where the secondary carrier establishment request includes the mobility restriction list cell in the UE context modification request;

[0008] Determining a UE context modification response message based on the secondary carrier establishment success response message corresponding to the secondary carrier establishment request, so as to configure the secondary carriers to be aggregated for the user equipment UE based on the UE context modification response message.

[0009] In an alternative implementation, the secondary carrier establishment request further includes: the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit; the secondary carrier establishment success response message includes: the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit.

[0010] In an alternative implementation, when the number of secondary carriers to be aggregated is multiple and the number of secondary distribution units corresponding to the secondary carriers to be aggregated is multiple, before determining the UE context modification response message based on the secondary carrier establishment success response message corresponding to the secondary carrier establishment request, it further includes:

[0011] Perform time-domain staggering processing on the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit according to the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, to obtain the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit;

[0012] Generate cooperative configuration information according to the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, and generate a secondary carrier modification request message according to the cooperative configuration information;

[0013] Send the secondary carrier modification request message to each secondary distribution unit respectively, and receive the secondary carrier modification response message returned by each secondary distribution unit.

[0014] In an alternative implementation, the generating of the cooperative configuration information according to the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit includes:

[0015] Obtain the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit;

[0016] Generate the cooperative configuration information according to the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit, the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit;

[0017] Among them, the collaborative configuration information is used to implement message communication between the MAC layers of any two distributed units.

[0018] In an alternative implementation, after receiving the secondary carrier modification response messages returned by each secondary distribution unit, it further includes:

[0019] In response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determine the primary carrier or secondary carrier corresponding to the uplink control information of the preset type;

[0020] According to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type and the collaborative configuration information in the secondary carrier modification request message, determine the secondary distribution unit corresponding to the uplink control information of the preset type;

[0021] Forward the uplink control information of the preset type to the secondary distribution unit corresponding to the uplink control information.

[0022] In an alternative implementation, the method further includes:

[0023] When the primary distribution unit receives a data transmission instruction, perform data transmission with the RLC layer deployment module included in the secondary distribution unit according to the communication address of the RLC layer deployment module of the secondary carrier.

[0024] In a second aspect, an embodiment of the present disclosure provides a method for configuring a secondary carrier, which is applicable to a secondary distribution unit. The method includes:

[0025] Receive a secondary carrier establishment request sent by a primary distribution unit, which includes a mobility restriction list cell;

[0026] Generate a secondary carrier establishment success response message according to the mobility restriction list cell in the secondary carrier establishment request, and return the secondary carrier establishment success response message to the primary distribution unit, so that the primary distribution unit can obtain a UE context modification response message based on the secondary carrier establishment success response message, and configure the to-be-aggregated secondary carrier for the user equipment UE based on the UE context modification response message.

[0027] In an alternative implementation, generating the secondary carrier establishment success response message according to the mobility restriction list cell includes:

[0028] Match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, and generate a secondary carrier establishment success response message according to the matching result.

[0029] In an alternative implementation, matching the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, and generating a secondary carrier establishment success response message according to the matching result includes:

[0030] Obtain the user group identifier in the UE subscription information corresponding to the mobility restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit;

[0031] Match the user group identifier in the UE subscription information corresponding to the mobility restriction list cell with the user group identifier in the network configuration information;

[0032] If the matching result shows a successful match, generate the secondary carrier establishment success response message according to the successfully matched user group identifier.

[0033] In an alternative implementation, obtaining the user group identifier included in the UE subscription information corresponding to the mobility restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit includes:

[0034] Judge whether the user equipment UE supports the non-public network NPN according to the UE subscription information, and judge whether the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a preset type according to the network configuration information, and obtain a judgment result;

[0035] When the judgment result meets the preset conditions, obtain the user group identifier in the UE subscription information corresponding to the mobility restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit;

[0036] Wherein, the preset conditions include: the user equipment UE supports the non-public network NPN, and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a first preset type; or, the user equipment UE does not support the non-public network NPN, and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a second preset type.

[0037] In an alternative implementation, returning the secondary carrier establishment success response message to the primary distribution unit includes:

[0038] Obtain the initial radio dedicated admission resource of the primary carrier corresponding to the primary distribution unit included in the secondary carrier establishment request;

[0039] Perform time-domain staggering processing on the initial radio dedicated admission resources of the secondary carrier corresponding to the secondary distribution unit according to the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit, to obtain the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit;

[0040] Return a secondary carrier establishment success response message containing the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit to the primary distribution unit.

[0041] In an optional implementation manner, the secondary distribution unit includes: a secondary distribution unit corresponding to the secondary carrier to be aggregated; after returning the secondary carrier establishment success response message containing the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit to the primary distribution unit, it further includes:

[0042] Obtain the cooperative configuration information included in the secondary carrier modification request message of the primary distribution unit;

[0043] Implement message communication between the MAC layers of any two distribution units according to the cooperative configuration information.

[0044] In an optional implementation manner, after returning the secondary carrier modification response message to the primary distribution unit, it further includes:

[0045] In response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determine the primary carrier or secondary carrier corresponding to the uplink control information of the preset type;

[0046] According to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type and the cooperative configuration information, determine the primary distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type;

[0047] Forward the uplink control information of the preset type to the primary distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type.

[0048] In an optional implementation manner, the method further includes:

[0049] When the secondary distribution unit receives a data transmission instruction, perform data transmission with the RLC layer deployment module included in the primary distribution unit according to the communication address of the RLC layer deployment module of the primary carrier.

[0050] In an optional implementation manner, the UE context modification request message further includes: a secondary cell pre-establishment cause value, and configuring the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message includes:

[0051] Determine the priority of the secondary carrier configuration according to the cause value of the secondary cell pre-establishment;

[0052] Configure the secondary carrier to be aggregated for the user equipment UE according to the priority of the secondary carrier configuration.

[0053] In an alternative implementation, the cause value of the secondary cell pre-establishment is at least one of the following:

[0054] The first type of cause value corresponding to the resource congestion on the primary base station side;

[0055] The second type of cause value corresponding to the traffic volume of the user equipment UE;

[0056] The third type of cause value corresponding to the service type of the user equipment UE;

[0057] The fourth type of cause value corresponding to maximizing the estimated cell spectral efficiency;

[0058] The fifth type of cause value corresponding to signal measurement and the sixth type of cause value corresponding to other causes.

[0059] In a third aspect, an embodiment of the present disclosure provides a method for configuring a secondary carrier, which is applicable to a master central unit included in a primary base station corresponding to a user equipment UE. The method includes:

[0060] Send a UE context modification request message to a master distribution unit included in the primary base station; wherein, the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell;

[0061] Receive a UE context modification response message returned by the master distribution unit, and configure the secondary carrier to be aggregated for the user equipment UE according to the UE context modification response message;

[0062] Wherein, the UE context modification response message is generated by the above method.

[0063] In an alternative implementation, before sending the UE context modification request message to the master distribution unit included in the primary base station, it further includes:

[0064] Obtain the mobility restriction list cell, and add the mobility restriction list cell to the UE context modification request message, so that the UE context modification request message includes the mobility restriction list cell.

[0065] In a fourth aspect, an embodiment of the present disclosure provides a master distribution unit, and the master distribution unit includes:

[0066] A determination module, configured to determine a secondary carrier to be aggregated according to a secondary cell pre-establishment list cell in a UE context modification request;

[0067] A sending module, configured to send a secondary carrier establishment request to the secondary distribution unit based on a carrier aggregation cooperation relationship of the secondary distribution unit corresponding to the secondary carrier to be aggregated, where the secondary carrier establishment request includes a mobility restriction list cell in the UE context modification request;

[0068] A configuration module, configured to determine a UE context modification response message based on a secondary carrier establishment success response message corresponding to the secondary carrier establishment request, so as to configure the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

[0069] In a fifth aspect, an embodiment of the present disclosure provides a secondary distribution unit, including:

[0070] A receiving module, configured to receive a secondary carrier establishment request including a mobility restriction list cell sent by a primary distribution unit;

[0071] A response module, configured to generate a secondary carrier establishment success response message according to the mobility restriction list cell in the secondary carrier establishment request, and return the secondary carrier establishment success response message to the primary distribution unit, so that the primary distribution unit obtains a UE context modification response message based on the secondary carrier establishment success response message, so as to configure the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

[0072] In a sixth aspect, an embodiment of the present disclosure provides a primary central unit, including:

[0073] A sending module, configured to send a UE context modification request message to a primary distribution unit included in the primary base station; where the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell;

[0074] A receiving module, configured to receive a UE context modification response message returned by the primary distribution unit, and configure the secondary carrier to be aggregated for the user equipment UE according to the UE context modification response message;

[0075] Wherein, the UE context modification response message is generated by the above method.

[0076] In a seventh aspect, an embodiment of the present disclosure provides a secondary carrier configuration system, including: the primary distribution unit provided in the fourth aspect above, the secondary distribution unit provided in the fifth aspect above, and the primary central unit provided in the sixth aspect above.

[0077] In an eighth aspect, an embodiment of the present disclosure provides an electronic device, which includes a memory and a processor; the memory stores a computer program executable by the processor, and when the computer program is executed by the processor, the configuration method of the secondary carrier provided in any of the above aspects is implemented.

[0078] In a ninth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the configuration method of the secondary carrier provided in any of the above aspects is implemented.

[0079] According to a configuration method of a secondary carrier provided by an embodiment of the present disclosure, by adding a mobility restriction list cell to a UE context modification request message and using the mobility restriction list cell as a matching criterion, matching of the network configuration information supported by the secondary distribution unit is achieved, thereby realizing direct communication between the master distribution unit and the secondary distribution unit, improving the efficiency of data information transmission, and then enabling a cross-site secondary carrier to be quickly added to a user equipment UE, improving service performance and efficiency, and significantly enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] In the drawings of the embodiments of the present disclosure:

[0081] Figure 1 A flowchart showing a configuration method of a secondary carrier applicable to a master distribution unit included in a master base station corresponding to a user equipment UE is shown;

[0082] Figure 2 A schematic flowchart showing a configuration method of a secondary carrier applicable to a secondary distribution unit is shown;

[0083] Figure 3 A schematic flowchart showing a configuration method of a secondary carrier applicable to a master central unit included in a master base station corresponding to a user equipment UE is shown;

[0084] Figure 4 A flowchart showing a configuration method of a secondary carrier provided by an embodiment of the present disclosure is shown;

[0085] Figure 5 A schematic diagram showing a secondary carrier modification process on the master distribution unit side is shown;

[0086] Figure 6 A schematic diagram showing a forwarding process of uplink control information on the master distribution unit side is shown;

[0087] Figure 7 A flowchart showing another configuration method of a secondary carrier provided by an embodiment of the present disclosure is shown;

[0088] Figure 8 A schematic diagram showing a sending process of a secondary carrier establishment success response message is shown;

[0089] Figure 9 It shows a schematic diagram of the secondary carrier modification process on the secondary distribution unit side;

[0090] Figure 10 It shows a schematic diagram of the forwarding process of uplink control information on the secondary distribution unit side;

[0091] Figure 11 It is a flowchart of another secondary carrier configuration method provided by an embodiment of the present disclosure;

[0092] Figure 12 It is a block diagram of a main distribution unit provided by an embodiment of the present disclosure;

[0093] Figure 13 It is a block diagram of a secondary distribution unit provided by an embodiment of the present disclosure;

[0094] Figure 14 It is a block diagram of a main central unit provided by an embodiment of the present disclosure;

[0095] Figure 15 It is a block diagram of a secondary carrier configuration system provided by an embodiment of the present disclosure;

[0096] Figure 16 It is a block diagram of an electronic device provided by an embodiment of the present disclosure;

[0097] Figure 17 It is a schematic diagram of downlink splitting of cross-site secondary carriers provided by a specific example of the present disclosure;

[0098] Figure 18 It is a schematic diagram of collaborative link establishment provided by a specific example of the present disclosure;

[0099] Figure 19 It is a schematic diagram of the MAC layer downlink data AN feedback message flow of base station deployment provided by a specific example of the present disclosure;

[0100] Figure 20 It is a flowchart of the cross-site secondary carrier establishment and configuration process provided by a specific example of the present disclosure. Specific embodiments

[0101] To enable those skilled in the art to better understand the technical solutions of the present disclosure, a secondary carrier configuration method, unit, system, electronic device, and storage medium provided by an embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0102] In the following, the present disclosure will be described more fully with reference to the accompanying drawings. However, the illustrated embodiments may be embodied in different forms, and the present disclosure should not be construed as limited to the embodiments set forth below. On the contrary, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0103] The accompanying drawings of the embodiments of the present disclosure are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification. They are used together with the detailed embodiments to explain the present disclosure, and do not constitute a limitation to the present disclosure. By describing the detailed embodiments with reference to the accompanying drawings, the above and other features and advantages will become more obvious to those skilled in the art.

[0104] The present disclosure can be described with reference to the plan view and / or sectional view by means of the ideal schematic diagrams of the present disclosure. Therefore, the example illustrations can be modified according to the manufacturing technology and / or tolerances.

[0105] Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0106] The terms used in the present disclosure are only used to describe specific embodiments and are not intended to limit the present disclosure. As used in the present disclosure, the term "and / or" includes any and all combinations of one or more related listed items. As used in the present disclosure, the singular forms "a" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. As used in the present disclosure, the terms "include" and "made of" specify the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their groups.

[0107] Unless otherwise defined, all terms (including technical and scientific terms) used in the present disclosure have the same meaning as commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted as having an idealized or overly formal meaning unless the present disclosure clearly defines so.

[0108] The present disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the accompanying drawings have schematic attributes, and the shapes of the regions shown in the figures illustrate the specific shapes of the regions of the elements, but are not intended to be restrictive.

[0109] An embodiment of the present disclosure provides a method for configuring a secondary carrier, which is applicable to a master distribution unit (DU) included in a master base station corresponding to a user equipment (UE). Figure 1 The flowchart of the method for configuring a secondary carrier applicable to a master distribution unit included in a master base station corresponding to a user equipment (UE) is shown as Figure 1 shown, and the method includes the following steps:

[0110] Step S110: Determine the secondary carriers to be aggregated according to the secondary cell pre-establishment list cell in the UE context modification request.

[0111] Among them, the UE context modification request can be sent by the master central unit included in the master base station. Correspondingly, the master distributed unit DU included in the master base station receives the UE context modification request message sent by the master central unit included in the master base station, and obtains the secondary cell pre-establishment list cell included in the UE context modification request message.

[0112] Among them, the timing for the master central unit in the master base station to send the UE context modification request can be: when the UE accesses the master base station and needs to add a secondary carrier, the master central unit CU in the master base station can send a UE context modification request message to the master distributed unit DU in the master base station. Among them, the UE context modification request message carries the necessary information required for secondary carrier configuration, so that the master distributed unit DU can implement the subsequent secondary carrier configuration process according to the information carried in the UE context modification request message. For example, the UE context modification request message carries a secondary cell pre-establishment list cell.

[0113] Among them, the secondary cell pre-establishment list cell contains the relevant information of the secondary carriers to be aggregated. Therefore, the master distributed unit DU can determine the secondary carriers to be aggregated according to the secondary cell pre-establishment list cell.

[0114] Step S120: Send a secondary carrier establishment request to the secondary distributed unit based on the carrier aggregation coordination relationship of the secondary distributed unit corresponding to the secondary carriers to be aggregated. The secondary carrier establishment request contains the mobility restriction list cell in the UE context modification request.

[0115] Among them, the carrier aggregation coordination relationship (CA coordination relationship) refers to the cooperative working relationship between different carriers in carrier aggregation. In CA, it is necessary to ensure that each carrier can operate in coordination to achieve higher data transmission rates and network performance. Correspondingly, when it is determined that there is a CA coordination relationship between the master DU and the secondary distributed unit DU based on the carrier aggregation coordination relationship of the secondary distributed unit corresponding to the secondary carriers to be aggregated, a secondary carrier establishment request is sent to the secondary distributed unit.

[0116] Among them, the secondary distributed unit corresponding to the secondary carriers to be aggregated can be directly determined according to the pre-configured carrier aggregation coordination relationship. Since the carrier aggregation coordination relationship records the mapping relationship between the secondary carriers and their corresponding secondary distributed units, the secondary distributed unit corresponding to the secondary carriers to be aggregated can be determined by obtaining the pre-configured carrier aggregation coordination relationship.

[0117] Among them, in this embodiment, the above UE context modification request further includes a mobility restriction list cell. Correspondingly, the secondary carrier establishment request includes the mobility restriction list cell in the UE context modification request.

[0118] Among them, the mobility restriction list cell is used to represent the matching restriction conditions corresponding to the UE context modification request message. The matching restriction conditions are used to limit whether the secondary distribution unit corresponding to the secondary carrier to be aggregated matches the primary distribution unit included in the primary base station corresponding to the user equipment UE. Any information that can be used to represent the matching conditions between the secondary distribution unit corresponding to the secondary carrier to be aggregated and the primary distribution unit can be included in the mobility restriction list cell. For example, the mobility restriction list cell may include UE subscription information. For example, the mobility restriction list cell may include all NPN network subscription information of the UE.

[0119] Step S130: Determine a UE context modification response message based on the secondary carrier establishment success response message corresponding to the secondary carrier establishment request, so as to configure the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

[0120] Among them, the secondary carrier establishment success response message is sent by the secondary distribution unit. According to the secondary carrier establishment success response message, the secondary carrier configuration in the UE context modification response message can be determined. Correspondingly, the master central unit can configure the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

[0121] Among them, the secondary distribution unit corresponding to the secondary carrier to be aggregated is used to determine whether to return a secondary carrier establishment success response message according to the mobility restriction list cell. The above mobility restriction list cell is used to represent the matching restriction conditions corresponding to the UE context modification request message. The matching restriction conditions are used to limit whether the secondary distribution unit corresponding to the secondary carrier to be aggregated matches the primary distribution unit included in the primary base station corresponding to the user equipment UE. Any information that can be used to represent the matching conditions between the secondary distribution unit corresponding to the secondary carrier to be aggregated and the primary distribution unit can be included in the mobility restriction list cell. For example, the mobility restriction list cell may include UE subscription information. Correspondingly, the secondary distribution unit corresponding to the secondary carrier to be aggregated can match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary distribution unit, and determine whether to return a secondary carrier establishment success response message according to the matching result.

[0122] It can be seen that by adding a mobility restriction list cell to the UE context modification request message and using the mobility restriction list cell as a matching criterion, the secondary distribution unit can directly determine whether to return a secondary carrier establishment success response message to the primary distribution unit based on the mobility restriction list cell included in the secondary carrier establishment request. Furthermore, the primary distribution unit can return a UE context modification response message to the primary central unit based on the secondary carrier establishment success response message, thereby achieving the purpose of configuring the secondary carrier to be aggregated for the user equipment (UE). Therefore, with the help of the mobility restriction list cell, the secondary distribution unit can directly determine whether to return a secondary carrier establishment success response message without using the primary central unit (CU) as a transfer station, thus enabling direct communication between the primary DU and the secondary DU and quickly configuring the secondary carrier. This method realizes direct communication between the primary distribution unit and the secondary distribution unit, improves the efficiency of data information transmission, and can quickly add an inter-site secondary carrier for the user equipment (UE), improving service performance and efficiency, and significantly enhancing the user experience.

[0123] In an alternative implementation, to reasonably allocate communication resources and avoid communication interference, the secondary carrier establishment request further includes: the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit. Correspondingly, the secondary carrier establishment success response message further includes: the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit.

[0124] In an alternative implementation, when the number of secondary carriers to be aggregated is multiple and the number of secondary distribution units corresponding to the secondary carriers to be aggregated is multiple, to achieve direct communication between any two distribution units, before determining the UE context modification response message based on the secondary carrier establishment success response message corresponding to the secondary carrier establishment request, the following operations are further performed: perform time-domain staggering processing on the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit according to the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, to obtain the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit; generate collaborative configuration information according to the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, and generate a secondary carrier modification request message according to the collaborative configuration information; send the secondary carrier modification request message to each secondary distribution unit respectively, and receive the secondary carrier modification response message returned by each secondary distribution unit. It can be seen that since the secondary carrier modification request message in this method is generated according to the collaborative configuration information, and the collaborative configuration information contains the basic information required by the two distribution units during mutual communication, each secondary distribution unit can perform message communication based on the collaborative configuration information.

[0125] In an alternative implementation, the collaborative configuration information can be generated in the following manner: Obtain the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit. Generate the above-mentioned collaborative configuration information based on the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit, the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit; wherein, the above-mentioned collaborative configuration information is used to implement message communication between the MAC layers of any two distribution units. Thus, in this method, in addition to including the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, the collaborative configuration information further includes the following four items of information: the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit. Since the information contained in the collaborative configuration information is more numerous and comprehensive, it is possible to more conveniently and accurately establish connections between distribution units, thereby realizing message transmission between any two distribution units.

[0126] Among them, the above four items of information are all sent by the CU. For example, the NR cell global identifier of the primary carrier corresponding to the primary distribution unit and the serving cell index of the primary carrier corresponding to the primary distribution unit can be carried when the UE initially accesses the CU in the primary base station; the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit can be carried by the UE context modification request message transmitted through the F1 interface. In short, this application does not limit the specific acquisition method of the above four items of information. The focus of this embodiment is to generate collaborative configuration information through various information, so as to facilitate the mutual communication between any two distribution units.

[0127] In an alternative implementation, after receiving the secondary carrier modification response messages returned by each secondary distribution unit, the following operations are further performed: in response to the uplink control information of the user equipment (UE), when the information type of the uplink control information is a preset type, determine the primary carrier or secondary carrier corresponding to the uplink control information of the preset type; according to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type and the collaborative configuration information in the secondary carrier modification request message, determine the secondary distribution unit corresponding to the uplink control information of the preset type; forward the uplink control information of the preset type to the secondary distribution unit corresponding to the uplink control information. Wherein, the uplink control information (UCI) is the uplink control information fed back by the UE to the base station, and the uplink control information of the preset type may include: CSI reporting and / or downlink data AN feedback information. In this method, when the uplink control information of the preset type is received, the secondary distribution unit corresponding to the uplink control information of the preset type can be determined according to the collaborative configuration information, so as to realize communication with the secondary distribution unit, and then forward the uplink control information of the preset type to the secondary distribution unit corresponding to the uplink control information. Thus, it can be seen that with the help of the collaborative configuration information, direct communication between the two distribution units can be realized.

[0128] In an alternative implementation, the above method further includes: when the primary distribution unit receives a data transmission instruction, perform data transmission with the RLC layer deployment module included in the secondary distribution unit according to the communication address of the RLC layer deployment module of the secondary carrier. Thus, in this embodiment, data transmission between the primary distribution unit and any secondary distribution unit can be realized through the communication address of the RLC layer deployment module. For example, the secondary carrier establishment request further includes: the communication address of the RLC layer deployment module of the primary carrier included in the primary distribution unit; and the secondary carrier establishment response message further includes: the communication address of the RLC layer deployment module of the secondary carrier included in the secondary distribution unit corresponding to the secondary carrier. Correspondingly, data transmission between the RLC layer deployment module included in the primary distribution unit and any secondary distribution unit can be realized through the communication address of the RLC layer deployment module.

[0129] Another embodiment of the present application further provides a method for configuring a secondary carrier, which is applicable to a secondary distribution unit. Figure 2 The flowchart showing the method for configuring a secondary carrier applicable to a secondary distribution unit is as Figure 2 shown, and the method includes the following steps:

[0130] Step S210: Receive a secondary carrier establishment request sent by the primary distribution unit and containing a mobile restriction list cell.

[0131] Among them, this step is executed by the secondary distribution unit, and the secondary carrier establishment request can be generated in the following manner: the primary distribution unit receives the UE context modification request message sent by the primary central unit included in the primary base station, and obtains the secondary cell pre-establishment list cell and the mobility restriction list cell included in the UE context modification request message; and determines the secondary carriers to be aggregated according to the secondary cell pre-establishment list cell, and generates a secondary carrier establishment request when there is a carrier aggregation cooperation relationship between the secondary distribution unit corresponding to the secondary carriers to be aggregated and the primary distribution unit.

[0132] Step S220: Generate a secondary carrier establishment success response message according to the mobility restriction list cell in the secondary carrier establishment request, and return the secondary carrier establishment success response message to the primary distribution unit, so that the primary distribution unit can obtain the UE context modification response message based on the secondary carrier establishment success response message, and configure the secondary carriers to be aggregated for the user equipment UE based on the UE context modification response message.

[0133] Among them, the secondary distribution unit determines whether to return a secondary carrier establishment success response message according to the mobility restriction list cell. The above mobility restriction list cell is used to represent the matching restriction conditions corresponding to the UE context modification request message, and the matching restriction conditions are used to limit whether the secondary distribution unit corresponding to the secondary carriers to be aggregated matches the primary distribution unit included in the primary base station corresponding to the user equipment UE. Any information that can be used to represent the matching conditions between the secondary distribution unit corresponding to the secondary carriers to be aggregated and the primary distribution unit can be included in the mobility restriction list cell. For example, the mobility restriction list cell may include UE subscription information. Correspondingly, the secondary distribution unit corresponding to the secondary carriers to be aggregated can match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary distribution unit, and determine whether to return a secondary carrier establishment success response message according to the matching result.

[0134] In an optional implementation manner, when generating a secondary carrier establishment success response message according to the mobility restriction list cell, the UE subscription information corresponding to the mobility restriction list cell is matched with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, and a secondary carrier establishment success response message is generated according to the matching result. Among them, the UE subscription information is used to represent whether the user equipment UE supports a non-public network NPN and the type of the supported non-public network NPN (Non-Public NetWork), and the network configuration information is used to represent the network type of the secondary carrier corresponding to the secondary distribution unit. For example, the network configuration information is used to represent whether the secondary carrier corresponding to the secondary distribution unit belongs to an NPN CAG-only cell or a CAG cell and the type of the supported non-public network NPN.

[0135] In an alternative implementation, the process of matching the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit and generating a secondary carrier establishment success response message specifically includes the following: Obtain the user group identifier in the UE subscription information corresponding to the mobility restriction list cell and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit; Match the user group identifier in the UE subscription information corresponding to the mobility restriction list cell with the user group identifier in the network configuration information; If the matching result shows a successful match, generate a secondary carrier establishment success response message based on the successfully matched user group identifier.

[0136] In an alternative implementation, obtaining the user group identifier included in the UE subscription information corresponding to the mobility restriction list cell and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit includes: Judging whether the user equipment UE supports the non-public network NPN according to the UE subscription information, and judging whether the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a preset type according to the network configuration information, to obtain a judgment result; When the judgment result meets the preset conditions, obtain the user group identifier in the UE subscription information corresponding to the mobility restriction list cell and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit.

[0137] Among them, the above-mentioned user group identifier can specifically be: For a user equipment UE that supports the NPN network, it can be the PLMN information and the NPN network identifier; For an ordinary UE, it can be the PLMN information.

[0138] Among them, the preset conditions include: The user equipment UE supports the non-public network NPN, and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a first preset type; Or, the user equipment UE does not support the non-public network NPN, and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a second preset type.

[0139] For example, the following three situations all belong to the situations that meet the preset conditions:

[0140] In the first situation, the user equipment UE supports the SNPN, and the user group cell of the first preset type is the SNPN cell;

[0141] In the second situation, the user equipment UE supports the PNI-NPN, and the user group cell of the first preset type is the CAG-only cell or the CAG cell;

[0142] In the third case, the user equipment UE does not support the NPN (i.e., the user equipment UE is a common UE), and the user group cell of the second preset type is a CAG cell or a common cell.

[0143] In an optional implementation manner, the secondary carrier establishment success response message is returned to the master distribution unit in the following manner: obtaining the initial radio dedicated admission resource of the primary carrier corresponding to the master distribution unit included in the secondary carrier establishment request; performing time domain staggering processing on the initial radio dedicated admission resource of the secondary carrier corresponding to the secondary distribution unit according to the initial radio dedicated admission resource of the primary carrier corresponding to the master distribution unit, to obtain the radio dedicated admission resource of the staggered secondary carrier corresponding to the secondary distribution unit; returning a secondary carrier establishment success response message including the radio dedicated admission resource of the staggered secondary carrier corresponding to the secondary distribution unit to the master distribution unit.

[0144] In an optional implementation manner, the secondary distribution unit includes: a secondary distribution unit corresponding to the secondary carrier to be aggregated. Correspondingly, after returning a secondary carrier establishment success response message including the radio dedicated admission resource of the staggered secondary carrier corresponding to the secondary distribution unit to the master distribution unit, further obtaining the cooperative configuration information included in the secondary carrier modification request message of the master distribution unit; implementing message communication between the MAC layers of any two distribution units according to the cooperative configuration information. The specific generation manner of the cooperative configuration information may refer to the description of the corresponding part in the previous embodiment, and will not be elaborated here.

[0145] In an optional implementation manner, after returning a secondary carrier modification response message to the master distribution unit, the following operations are further performed: in response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determining the primary carrier or secondary carrier corresponding to the uplink control information of the preset type; determining the master distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type according to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type and the cooperative configuration information; forwarding the uplink control information of the preset type to the master distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type.

[0146] In an optional implementation manner, the above method further includes the following operation: when the secondary distribution unit receives a data transmission instruction, performing data transmission with the RLC layer deployment module included in the master distribution unit according to the communication address of the RLC layer deployment module of the primary carrier.

[0147] In an alternative implementation, the UE context modification request message further includes: a secondary cell pre-establishment cause value. Correspondingly, when configuring the secondary carriers to be aggregated for the user equipment UE based on the UE context modification response message, the priority of the secondary carrier configuration can be determined according to the secondary cell pre-establishment cause value; and the secondary carriers to be aggregated for the user equipment UE are configured according to the priority of the secondary carrier configuration.

[0148] In an alternative implementation, the secondary cell pre-establishment cause value includes at least one of the following: a first type of cause value corresponding to resource congestion on the primary base station side; a second type of cause value corresponding to the traffic volume of the user equipment UE; a third type of cause value corresponding to the service type of the user equipment UE; a fourth type of cause value corresponding to maximizing the estimated cell spectral efficiency; a fifth type of cause value corresponding to signal measurement; and a sixth type of cause value corresponding to other causes.

[0149] Another embodiment of the present application further provides a method for configuring secondary carriers, which is applicable to the master central unit included in the primary base station corresponding to the user equipment UE. Figure 3 The flowchart of the method for configuring secondary carriers applicable to the master central unit included in the primary base station corresponding to the user equipment UE is shown, as Figure 3 shown, the method includes the following steps:

[0150] Step S310: Send a UE context modification request message to the master distribution unit included in the primary base station; wherein, the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell.

[0151] Step S320: Receive the UE context modification response message returned by the master distribution unit, and configure the secondary carriers to be aggregated for the user equipment UE according to the UE context modification response message; wherein, the UE context modification response message is generated by the method in the above embodiment.

[0152] In an alternative implementation, before sending the UE context modification request message to the master distribution unit included in the primary base station, the mobility restriction list cell is further obtained and added to the UE context modification request message to make the UE context modification request message include the mobility restriction list cell.

[0153] The implementation manner of the above method will be introduced below in conjunction with the accompanying drawings:

[0154] In some related technologies, when a user equipment (UE) accesses a base station, the central unit (CU) sends a UE context setup request message (UE CONTEXT SETUP REQUEST, a signaling message used to establish the UE instance context on the distributed unit (DU) side in 3GPP 38.473) through the F1 interface to notify the DU side to establish all the secondary carriers indicated by the configuration instruction. After the DU side successfully configures the corresponding secondary carriers, it sends a UE context setup response message (UE CONTEXT SETUP RESPONSE) carrying the result of the secondary carrier configuration information to the CU. After the CU obtains it, it configures the user equipment UE (terminal) through an RRC reconfiguration (RRCReconfiguration, a 3GPP 38.331 signaling message) message. In the related technologies, in the process of configuring cross-site secondary carriers, only the CU can be used as a transfer station to implement the transmission of signaling messages between cross-site DUs. Compared with the direct communication between DUs, the communication delay is longer, which is not conducive to the scheduling of the MAC layer, affects the user traffic, and thus affects the user experience. To solve the above problems, the embodiments of the present disclosure provide a method, unit, system, electronic device, and storage medium for configuring secondary carriers. By implementing direct communication between DUs, the configuration efficiency of cross-site secondary carriers is improved, the data information transmission efficiency is improved, and thus the user experience is improved.

[0155] Figure 4 It is a flowchart of a method for configuring a secondary carrier provided by an embodiment of the present disclosure. Refer to Figure 4 An embodiment of the present disclosure provides a method for configuring a secondary carrier, which is applicable to a main distributed unit included in a main base station corresponding to a user equipment UE. The method includes:

[0156] Step S410: Receive a UE context modification request message sent by a main central unit included in the main base station, and obtain a secondary cell pre-establishment list cell and a mobility restriction list cell included in the UE context modification request message.

[0157] A base station, that is, a public mobile communication base station, is an interface device for mobile devices to access the Internet and is also a form of radio station. It refers to a radio transceiver station that transmits and receives information between a mobile phone terminal through a mobile communication switching center in a certain radio coverage area.

[0158] The 5th Generation Mobile Communication Technology (abbreviated as 5G, also known as NR, New Radio, new air interface) is a new generation of broadband mobile communication technology featuring high speed, low latency, and large connection capabilities. 5G communication facilities are the network infrastructure for realizing the interconnection of humans, machines, and things. 5G base stations (the next Generation Node B, abbreviated as gNB) are the core devices of the 5G network, providing wireless coverage and enabling wireless signal transmission between wired communication networks and wireless terminals.

[0159] The functions of 5G gNB are reconstructed into two functional entities: the Centralized Unit (CU) and the Distributed Unit (DU). In the specific implementation solution, the CU device is implemented using a general platform, mainly including non-real-time radio high-layer protocol stack functions, which can not only support radio network functions but also have the ability to support core network functions and edge applications; the DU device is implemented using a dedicated platform or a general + dedicated hybrid platform, supporting high-density mathematical operation capabilities, and mainly processing physical layer functions and layer 2 (data link layer) functions with real-time requirements.

[0160] Among them, each base station contains only one centralized unit, and one centralized unit can control multiple distributed units. Therefore, when determining the primary centralized unit (primary CU) and the primary distributed unit (primary DU) included in the primary base station (primary gNB) corresponding to the user equipment UE, the other DUs included in this primary gNB and the DUs included in other gNBs are all secondary distributed units (secondary DUs).

[0161] Each Distributed Unit (DU) can support one or more cells. A cell refers to a wireless coverage area identified by the BaseStation Identity Code (BSIC) or the Cell Global ldentifier (CGI).

[0162] During the process of operator network deployment, there are differences in the coverage capabilities of different frequency bands, and there are often situations where certain terminals are covered by carriers from different sites simultaneously. From the perspective of carrier aggregation, there is a need to add cross-site secondary carriers. During the process of adding a secondary carrier to the user equipment UE, when the UE accesses the primary gNB composed of the primary CU and the primary DU, the primary CU sends a UE context modification request message to the corresponding primary DU through the F1 interface.

[0163] Among them, the UE CONTEXT MODIFICATION REQUEST is a signaling message used to modify the UE context on the DU side in 3GPP 38.473. The UE CONTEXT MODIFICATION REQUEST message carries the SCell To Be Setup List information element and the Mobility RestrictionList (3GPP 38.423) information element.

[0164] Among them, the SCell To Be Setup List contains the relevant information of the secondary carriers to be aggregated, including: the sCellIndex (3GPP 38.473) of the secondary carriers to be aggregated, the NR cell global identifier NRCGI of the secondary carriers to be aggregated, the CA type (whether uplink CA is supported), and the servingCellMo (3GPP 38.473) of the serving cell, etc.

[0165] Step S420: Determine the secondary carriers to be aggregated according to the SCell To Be Setup List information element. When there is a carrier aggregation coordination relationship between the secondary distribution unit corresponding to the secondary carriers to be aggregated and the primary distribution unit, send a secondary carrier establishment request containing the Mobility RestrictionList information element to the secondary distribution unit.

[0166] Among them, determine the secondary carriers to be aggregated and their corresponding gNB and CA types according to the relevant information of the carriers contained in the SCell To Be Setup List information element.

[0167] Among them, the carrier aggregation coordination relationship (CA coordination relationship) refers to the collaborative working relationship between different carriers in carrier aggregation. In CA, it is necessary to ensure that each carrier can operate coordinately to achieve higher data transmission rates and network performance. For two cells supported by the primary DU and the secondary DU respectively, only when there is a CA coordination relationship between the primary DU and the secondary DU, the carrier corresponding to the secondary DU is added as the secondary carrier of the UE corresponding to the primary DU, that is, whether there is a CA coordination relationship between different-site DUs determines whether the primary DU can communicate with the secondary DU. Among them, before the process of configuring and adding secondary carriers starts, a CA coordination relationship between the primary DU and other DUs is established in advance, so as to judge whether the secondary DU corresponding to the secondary carriers to be aggregated has already established a CA coordination relationship with the primary DU in step S420.

[0168] Among them, the secondary carrier establishment request includes: a secondary cell pre-establishment list cell, a mobility restriction list cell, the identifier of the base station to which the master DU belongs, i.e., Global gNB ID, the identifier of the base station to which the secondary DU belongs, i.e., Global gNB ID, the NR cell global identifier (NR CGI) of the primary carrier corresponding to the master DU, UE capability information, and the UE radio bearer configuration information included in the secondary carrier corresponding to the secondary DU (the bearer configuration content is aligned with the RLC-BearerConfig in 3GPP 38.331 protocol).

[0169] Step S430: When receiving a secondary carrier establishment success response message returned by the secondary distribution unit corresponding to the secondary carrier to be aggregated, return a UE context modification response message to the master central unit according to the secondary carrier establishment success response message, so that the master central unit can configure the secondary carrier to be aggregated for the user equipment UE according to the UE context modification response message.

[0170] Among them, the secondary distribution unit corresponding to the secondary carrier to be aggregated is used to match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary distribution unit, and determine whether to return a secondary carrier establishment success response message according to the matching result. Among them, the UE subscription information corresponding to the mobility restriction list is used as the judgment criterion for whether the secondary carrier to be aggregated can be added and configured as the secondary carrier of the current UE.

[0171] In an optional implementation manner, the UE subscription information is used to indicate whether the user equipment UE supports a non-public network (NPN) and the type of the supported non-public network (NPN). And the network configuration information is used to indicate whether the secondary carrier corresponding to the secondary distribution unit belongs to an NPN CAG-only cell or a CAG cell and the type of the supported non-public network NPN. Among them, a CAG (Closed Access Group) cell refers to a cell under whose coverage CAG members can obtain normal communication services, and an NPN CAG-only cell is an NPN-only private network cell defined in 3GPP 38.300 and 38.331 protocols. And in the case of a successful match, obtain the UE NPN network identifier and PLMN (Public Land Mobile Network) corresponding to the matched user equipment UE, so as to obtain the corresponding base station configuration information for admission according to the matched UE NPN network identifier and PLMN in the scenario where the public network (or a public network supporting network sharing) and the NPN private network coexist. Among them, the base station configuration information is used to indicate the radio resource allocation ratio of the secondary carrier corresponding to the secondary distribution unit.

[0172] In an alternative implementation, the above matching result is specifically the result of matching and admitting the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary DU. When the UE subscription information corresponding to the mobility restriction list cell matches and is successfully admitted to the network configuration information supported by the secondary carrier corresponding to the secondary DU (at least one secondary carrier in the secondary DU matches and is successfully admitted), the primary DU receives a secondary carrier establishment success response message returned by the secondary DU corresponding to the secondary carrier to be aggregated. Conversely, the primary DU receives a secondary carrier establishment failure response message returned by the secondary DU corresponding to the secondary carrier to be aggregated. The secondary carrier establishment success response message is used to indicate that a connection is successfully established between the primary DU and the secondary DU, and then the process of adding the carrier corresponding to the secondary DU as the secondary carrier of the UE corresponding to the primary DU can be further completed through subsequent operation steps.

[0173] Among them, the UE context modification response message (UE CONTEXT MODIFICATION RESPONSE) is a feedback message corresponding to the UE context modification request message (UE CONTEXT MODIFICATION REQUEST), and is used by the primary DU to feedback the relevant information of the cross-site secondary carrier corresponding to the established secondary DU to the primary CU.

[0174] In summary, according to a method for configuring a secondary carrier provided by an embodiment of the present disclosure, the method is applicable to a master distribution unit included in a master base station corresponding to a user equipment (UE). First, a UE context modification request message sent by a master central unit included in the master base station is received, and a secondary cell pre-establishment list cell and a mobility restriction list cell included in the UE context modification request message are obtained. Secondly, a secondary carrier to be aggregated is determined according to the secondary cell pre-establishment list cell. When there is a carrier aggregation cooperation relationship between a secondary distribution unit corresponding to the secondary carrier to be aggregated and the master distribution unit, a secondary carrier establishment request including the mobility restriction list cell is sent to the secondary distribution unit. Finally, when a secondary carrier establishment success response message returned by the secondary distribution unit corresponding to the secondary carrier to be aggregated is received, a UE context modification response message is returned to the master central unit according to the secondary carrier establishment success response message, so that the master central unit configures the secondary carrier to be aggregated for the user equipment UE according to the UE context modification response message. Wherein, the secondary distribution unit corresponding to the secondary carrier to be aggregated is used to match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary distribution unit, and determine whether to return a secondary carrier establishment success response message according to the matching result. It can be seen that by adding a mobility restriction list cell to the UE context modification request message and using the UE subscription information corresponding to the mobility restriction list cell as a matching criterion, the matching of the network configuration information supported by the secondary distribution unit is realized, so as to realize the direct communication between the master distribution unit and the secondary distribution unit, improve the efficiency of data information transmission, and then quickly add a cross-site secondary carrier for the user equipment UE, improve service performance and efficiency, and significantly improve the user experience. Therefore, the method can be applicable to various DRAN (Distributed Radio Access Network) and CRAN (Centralized Radio Access Network) networking scenarios, and can quickly configure multiple cross-site secondary carriers, significantly improving the user experience.

[0175] In an alternative implementation, the UE subscription information is used to indicate whether the user equipment UE supports a non-public network (NPN) and the type of the supported non-public network NPN. And, the network configuration information is used to indicate whether the secondary carrier corresponding to the secondary distribution unit belongs to an NPN CAG-only cell or a CAG cell and the type of the supported non-public network NPN. Then, the UE subscription information is specifically the subscribed UE NPN network identification information or PLMN information. And, the above matching result is specifically the result of matching and acceptance of the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary DU.

[0176] Therefore, the specific implementation manner of the process of matching the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit and determining whether to return a secondary carrier establishment success response message according to the matching result is as follows:

[0177] First, determine whether the user equipment (UE) supports a non-public network (NPN) according to the UE subscription information.

[0178] If the UE supports the NPN, obtain the NPN network identifier and the public land mobile network (PLMN) included in the UE subscription information corresponding to the mobility restriction list cell; if the UE does not support the NPN, obtain the PLMN included in the UE subscription information corresponding to the mobility restriction list cell.

[0179] Second, determine whether the secondary carrier corresponding to the secondary distribution unit belongs to an NPN CAG-only cell or a CAG cell according to the network configuration information.

[0180] If the secondary carrier corresponding to the secondary distribution unit belongs to an NPN CAG-only cell or a CAG cell, obtain the NPN network identifier and the PLMN included in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit.

[0181] Finally, for the UE that supports the NPN network, match the NPN network identifier and the PLMN included in the UE subscription information with the NPN network identifier and the PLMN included in the network configuration information; for an ordinary UE, match the serving PLMN of the UE with the PLMN included in the network configuration information (i.e., match the PLMN included in the UE subscription information with the PLMN included in the network configuration information). If the match is successful, configure the secondary carrier according to the successfully matched "user group identifier" (i.e., the NPN network identifier and the PLMN), and return a secondary carrier establishment success response message. Among them, the non-public network NPN serves private entities such as enterprises, and can be specifically deployed as a completely independent network, or can be managed by the PLMN and provide services according to the PLMN. According to the requirements of the NPN network, an unsubscribed and unauthorized UE cannot attempt to access under the NPN network; at the same time, it can also be restricted that only the UE that supports the NPN cannot access under the public network. In addition, it is possible that an authorized UE is allowed to access both under the public network and the NPN network. In the current 3GPP standard, the NPN network types include the following two: PNI-NPN (Public Network Integrated Non-Public Network) and SNPN (Stand-alone Non-Public Network).

[0182] It can be seen from this that through the method for configuring a secondary carrier provided in the above embodiment, in a scenario where the public network and the NPN coexist, it is possible to quickly add an inter-site secondary carrier by implementing direct communication between the primary DU and the secondary DU, further broadening the usage scenario of the method for configuring a secondary carrier provided in the embodiments of the present disclosure.

[0183] In an alternative implementation, in order to reasonably allocate communication resources and avoid communication interference, the secondary carrier establishment request further includes: the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of other non-this-carrier; and the secondary carrier establishment success response message further includes: the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to the secondary distribution unit.

[0184] Among them, the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to the secondary distribution unit are obtained through the following method: the secondary distribution unit performs time-domain staggering processing on the initial radio dedicated admission resources of the secondary carrier corresponding to the secondary distribution unit according to the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of other non-this-carrier, so as to obtain the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to the secondary distribution unit.

[0185] In an alternative implementation, when the number of secondary carriers to be aggregated is multiple and the number of secondary distribution units corresponding to the secondary carriers to be aggregated is multiple, in order to implement direct communication between secondary distribution units, before returning the UE context modification response message to the master central unit according to the secondary carrier establishment success response message, a secondary carrier modification process is further performed. Figure 5 The schematic diagram of the secondary carrier modification process is shown, as Figure 5 shown, the secondary carrier modification process specifically includes the following steps:

[0186] Step S510: Perform time-domain staggering processing on the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit according to the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to each secondary distribution unit, so as to obtain the radio dedicated admission resources of the primary carrier after staggered processing corresponding to the primary distribution unit.

[0187] Step S520: Generate cooperative configuration information according to the radio dedicated admission resources of the primary carrier after staggered processing corresponding to the primary distribution unit, the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to each secondary distribution unit, the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit, and generate a secondary carrier modification request message according to the cooperative configuration information.

[0188] Step S530: Send a secondary carrier modification request message containing the cooperative configuration information to each secondary distribution unit respectively, and receive the secondary carrier modification response message returned by each secondary distribution unit.

[0189] It can be seen from this that in a method for configuring a secondary carrier implemented in this way, when the number of secondary carriers to be aggregated is multiple and the number of secondary DUs corresponding to the secondary carriers to be aggregated is multiple, each secondary carrier establishment request sent to the target secondary DU includes, in addition to the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit, the radio dedicated admission resources of the added secondary carriers, so that the target secondary DU can perform time domain staggering processing on the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit, the radio dedicated admission resources of the added secondary carriers, and its own radio dedicated admission resources, obtain the radio dedicated admission resources of the secondary carriers after the staggering processing corresponding to the target secondary DU, and return them to the primary DU. Furthermore, the radio dedicated admission resources of the secondary carriers after the staggering processing corresponding to the target secondary DU this time can be added to the secondary carrier establishment request and sent to the next target secondary DU, and the above operations such as time domain staggering processing are repeated in the next target secondary DU to obtain the radio dedicated admission resources of the secondary carriers after the staggering processing corresponding to the next target secondary DU, and finally obtain the radio dedicated admission resources of the secondary carriers after the staggering processing corresponding to each secondary DU. The above process realizes direct communication between secondary DUs, further improving the transmission efficiency of data information.

[0190] In an optional implementation manner, the coordinated configuration information further includes the physical cell identifier and carrier identifier of each secondary carrier to be aggregated, which are used to implement message communication between the MAC layers of any two distribution units. In order to realize service coordinated interaction between the user equipment UE and the MAC layer of the DU based on the coordinated configuration information, after receiving the secondary carrier modification response message returned by each secondary distribution unit, when the secondary carrier configuration of the user equipment UE is successful and activated, and the user equipment UE generates an upload or download service, the forwarding process of the uplink control information is further executed. Figure 6 FIG. shows a schematic diagram of the forwarding process of the uplink control information, as Figure 6 shown, the above method includes the following steps:

[0191] Step S610: In response to the received uplink control information of a preset type sent by the user equipment UE, determine the primary carrier or secondary carrier corresponding to the uplink control information of the preset type.

[0192] Step S620: According to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type, and in combination with the coordinated configuration information included in the secondary carrier modification request message, determine the secondary distribution unit corresponding to the uplink control information of the preset type.

[0193] Step S630: Forward the uplink control information of the preset type to the secondary distribution unit corresponding to the uplink control information of the preset type.

[0194] In the configuration method of the secondary carrier implemented based on the above method, the secondary carrier establishment request further includes: the PHY layer configuration information (PhysicalCellGroupConfig information, corresponding to the cell in 3GPP 38.331 protocol, the secondary station physical layer configuration of the UE secondary carrier) and MAC layer configuration information (MAC-CellGroupConfig information, corresponding to the cell in 3GPP 38.331 protocol, the media access control layer configuration of the UE secondary carrier) included in the secondary DU, and the cell radio network temporary identifier C-RNTI (Cell Radio Network Temporary Identifier, 3GPP cell radio network temporary identifier).

[0195] Among them, the uplink control information (Uplink Control Information, UCI) is the uplink control information fed back by the UE to the base station, including CSI (Channel State Information, channel state information), ACK / NACK (Acknowledgement / Negative Acknowledgement), and SR (Scheduling Request, uplink scheduling request). Among them, the uplink control information carrying the CSI content includes the identifier of the configured UE carrier (including the primary carrier or the secondary carrier). In an optional implementation manner, the preset type of uplink control information includes: CSI reporting and / or downlink data AN feedback information.

[0196] It can be seen that according to the configuration method of the secondary carrier implemented based on the above method, a cooperative link can be established between the MAC layers of the DUs, so as to realize direct communication between the MAC layers of the primary DU and the secondary DU, or between the secondary DUs, which is beneficial to the faster transmission of subsequent internal UE scheduling information in the MAC layer, thereby improving user traffic.

[0197] In an optional implementation manner, the secondary carrier establishment request further includes: the communication address (IP address) of the RLC layer deployment module of the primary carrier included in the primary distribution unit; and, the secondary carrier establishment success response message further includes: the communication address of the RLC layer deployment module of the secondary carrier included in the secondary distribution unit corresponding to the secondary carrier.

[0198] Among them, the communication address of the RLC layer deployment module is used to implement data transmission between the RLC layer deployment modules included in the primary distribution unit and any secondary distribution unit.

[0199] It can be seen from this that according to the configuration method of the secondary carrier implemented in the above manner, by realizing direct communication between DUs at the signaling level, the master DU can obtain the IP address of the secondary carrier configured by the secondary DU, and realize direct data communication between DUs at the RLC layer. For example, after the addition configuration process of the secondary carrier is completed, direct transmission of data packets can be realized, and traffic can be split based on the IP address when there is an upload or download service.

[0200] In an alternative implementation, the UE context modification request message further includes: a secondary cell pre-establishment reason value, and the secondary cell pre-establishment reason value includes at least one of the following: a first type of reason value corresponding to resource congestion on the master base station side, a second type of reason value corresponding to the traffic volume of the user equipment UE, a third type of reason value corresponding to the service type of the user equipment UE, a fourth type of reason value corresponding to maximizing the estimated cell spectrum efficiency, a fifth type of reason value corresponding to signal measurement, and a sixth type of reason value corresponding to other reasons; wherein, the secondary cell pre-establishment reason value is used to determine the priority of secondary carrier configuration. When enabling the function of adding a secondary cell of the UE under the condition of integrating multiple secondary cell establishment reasons, resource priority acceptance of the DU on the secondary base station side is achieved through the transmission of the secondary cell pre-establishment reason value.

[0201] Figure 7 It is a flowchart of another configuration method of the secondary carrier provided by an embodiment of the present disclosure. Refer to Figure 7 An embodiment of the present disclosure provides a configuration method of a secondary carrier, which is applicable to a secondary distribution unit, and the method includes:

[0202] Step S710: Receive a secondary carrier establishment request containing a mobile restriction list cell sent by the master distribution unit.

[0203] Wherein, the secondary carrier establishment request is generated in the following manner: the master distribution unit receives a UE context modification request message sent by a master central unit included in the master base station, obtains a secondary cell pre-establishment list cell and a mobile restriction list cell included in the UE context modification request message; and determines the secondary carrier to be aggregated according to the secondary cell pre-establishment list cell, and generates a secondary carrier establishment request when there is a carrier aggregation cooperation relationship between the secondary distribution unit corresponding to the secondary carrier to be aggregated and the master distribution unit.

[0204] Step S720: Match the corresponding UE subscription information with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit.

[0205] Step S730: When the UE subscription information corresponding to the cell matches successfully with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, return a secondary carrier establishment success response message to the primary distribution unit, so that the primary distribution unit can notify the primary central unit to configure the secondary carrier to be aggregated for the user equipment (UE) according to the secondary carrier establishment success response message.

[0206] In an alternative implementation, Figure 8 shows a schematic diagram of the sending process of the secondary carrier establishment success response message. As Figure 8 shown, the secondary carrier establishment success response message can be returned to the primary distribution unit through the following steps:

[0207] Step S810: Obtain the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit included in the secondary carrier establishment request.

[0208] Step S820: Perform time-domain staggering processing on the initial radio dedicated admission resources of the secondary carrier corresponding to the secondary distribution unit according to the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit, to obtain the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit.

[0209] Step S830: Return a secondary carrier establishment success response message to the primary distribution unit, which includes the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit.

[0210] In an alternative implementation, the secondary distribution unit includes: the secondary distribution unit corresponding to the secondary carrier to be aggregated.

[0211] Thus, after returning a secondary carrier establishment success response message that includes the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit to the primary distribution unit, further execute Figure 9 the secondary carrier modification process shown in Figure 9 As shown, the secondary carrier modification process on the secondary distribution unit side includes the following steps:

[0212] Step S910: Receive the secondary carrier modification request message sent by the primary distribution unit, and obtain the collaborative configuration information included in the secondary carrier modification request message.

[0213] Step S920: Return a secondary carrier modification response message to the primary distribution unit.

[0214] Among them, the collaborative configuration information includes the physical cell identifier and carrier identifier of the secondary carrier to be aggregated, which is used to implement message communication between the MAC layers of any two distributed units. Moreover, the collaborative configuration information is generated in the following manner: The master distributed unit performs time-domain staggering processing on the initial radio dedicated admission resources of the primary carrier corresponding to the master distributed unit according to the radio dedicated admission resources of the secondary carrier after staggering processing corresponding to the slave distributed unit, so as to obtain the radio dedicated admission resources of the primary carrier after staggering processing corresponding to the master distributed unit; According to the radio dedicated admission resources of the primary carrier after staggering processing corresponding to the master distributed unit, the radio dedicated admission resources of the secondary carrier after staggering processing corresponding to the slave distributed unit, the NR cell global identifier of the primary carrier corresponding to the master distributed unit, the NR cell global identifier of the secondary carrier corresponding to the slave distributed unit, the serving cell index of the primary carrier corresponding to the master distributed unit, and the secondary cell pre-establishment list cell corresponding to the secondary carrier of the slave distributed unit, the collaborative configuration information is generated.

[0215] In an alternative implementation, Figure 10 The figure shows a schematic diagram of the forwarding process of the uplink control information on the side of the slave distributed unit. Correspondingly, after returning the secondary carrier modification response message to the master distributed unit, the following steps are performed:

[0216] Step S1010: In response to receiving the preset type of uplink control information sent by the user equipment UE, determine the primary carrier or secondary carrier corresponding to the preset type of uplink control information;

[0217] Step S1020: According to the primary carrier or secondary carrier corresponding to the preset type of uplink control information, and in combination with the collaborative configuration information, determine the master distributed unit or slave distributed unit corresponding to the preset type of uplink control information;

[0218] Step S1030: Forward the preset type of uplink control information to the master distributed unit or slave distributed unit corresponding to the preset type of uplink control information.

[0219] In an alternative implementation, the secondary carrier establishment request further includes: the communication address of the RLC layer deployment module of the primary carrier included in the master distributed unit; and the secondary carrier establishment success response message further includes: the communication address of the RLC layer deployment module of the secondary carrier included in the secondary distributed unit corresponding to the secondary carrier. Among them, the communication address of the RLC layer deployment module is used to implement data transmission between the RLC layer deployment modules included in the master distributed unit and any secondary distributed unit.

[0220] Each step in the above method embodiments applicable to the secondary distribution unit corresponds to the steps included in the method embodiments applicable to the primary distribution unit included in the primary base station corresponding to the user equipment UE. For the specific implementation manners and details, reference may be made to the descriptions of the corresponding parts of the method embodiments applicable to the primary distribution unit included in the primary base station corresponding to the user equipment UE, which will not be elaborated here.

[0221] In a third aspect, Figure 11 is a flowchart of another secondary carrier configuration method provided by an embodiment of the present disclosure. Referring to Figure 11 , an embodiment of the present disclosure provides a secondary carrier configuration method, which is applicable to a primary central unit included in a primary base station corresponding to a user equipment UE. The method includes:

[0222] Step S1110: Send a UE context modification request message to the primary distribution unit included in the primary base station; wherein, the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell.

[0223] Step S1120: Receive a UE context modification response message returned by the primary distribution unit, and configure the secondary carriers to be aggregated for the user equipment UE according to the UE context modification response message.

[0224] Wherein, the UE context modification response message is generated by the above-mentioned secondary carrier configuration method applicable to the primary distribution unit included in the primary base station to which the user equipment UE belongs.

[0225] Each step in the above method embodiments applicable to the primary central unit included in the primary base station corresponding to the user equipment UE corresponds to the steps included in the method embodiments applicable to the primary distribution unit included in the primary base station corresponding to the user equipment UE. For the specific implementation manners and the meanings of the terms included therein, reference may be made to the descriptions of the corresponding parts of the method embodiments applicable to the primary distribution unit included in the primary base station corresponding to the user equipment UE, which will not be elaborated here.

[0226] In a fourth aspect, Figure 12 is a block diagram of a primary distribution unit provided by an embodiment of the present disclosure. Referring to Figure 12 , an embodiment of the present disclosure provides a primary distribution unit 40, which may be included in a primary base station corresponding to a user equipment UE and includes:

[0227] A determination module 41, configured to determine the secondary carriers to be aggregated according to the secondary cell pre-establishment list cell in the UE context modification request;

[0228] A sending module 42, configured to send a secondary carrier establishment request to the secondary distribution unit based on the carrier aggregation cooperation relationship of the secondary distribution unit corresponding to the secondary carrier to be aggregated, where the secondary carrier establishment request includes a mobility restriction list cell in the UE context modification request;

[0229] A configuration module 43, configured to determine a UE context modification response message based on the secondary carrier establishment success response message corresponding to the secondary carrier establishment request, so as to configure the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

[0230] In an optional implementation manner, the secondary carrier establishment request further includes: the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit; the secondary carrier establishment success response message includes: the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit.

[0231] In an optional implementation manner, when the number of secondary carriers to be aggregated is multiple and the number of secondary distribution units corresponding to the secondary carriers to be aggregated is multiple, the configuration module is further configured to:

[0232] Perform time domain staggering processing on the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit according to the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, to obtain the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit;

[0233] Generate cooperative configuration information according to the radio dedicated admission resources of the staggered primary carrier corresponding to the primary distribution unit and the radio dedicated admission resources of the staggered secondary carrier corresponding to each secondary distribution unit, and generate a secondary carrier modification request message according to the cooperative configuration information;

[0234] Send the secondary carrier modification request message to each secondary distribution unit respectively, and receive the secondary carrier modification response message returned by each secondary distribution unit.

[0235] In an optional implementation manner, the configuration module is specifically adapted to:

[0236] Obtain the NR cell global identifier of the primary carrier corresponding to the primary distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the primary carrier corresponding to the primary distribution unit, and the secondary cell pre-establishment list cell corresponding to each secondary distribution unit;

[0237] Generate the cooperative configuration information based on the radio dedicated admission resources of the main carrier after staggered processing corresponding to the main distribution unit, the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to each secondary distribution unit, the NR cell global identifier of the main carrier corresponding to the main distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the main carrier corresponding to the main distribution unit, and the secondary cell pre - establishment list cell corresponding to each secondary distribution unit;

[0238] Among them, the cooperative configuration information is used to implement message communication between the MAC layers of any two distribution units.

[0239] In an optional implementation manner, the main distribution unit 40 further includes: a first cooperative configuration module 44;

[0240] Among them, the first cooperative configuration module 44 is used for:

[0241] In response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determine the main carrier or secondary carrier corresponding to the uplink control information of the preset type;

[0242] According to the main carrier or secondary carrier corresponding to the uplink control information of the preset type and the cooperative configuration information in the secondary carrier modification request message, determine the secondary distribution unit corresponding to the uplink control information of the preset type;

[0243] Forward the uplink control information of the preset type to the secondary distribution unit corresponding to the uplink control information.

[0244] In a fifth aspect, Figure 13 This is a block diagram of a secondary distribution unit provided by an embodiment of the present disclosure. Refer to Figure 13 , an embodiment of the present disclosure provides a secondary distribution unit 50, including:

[0245] A receiving module 51, configured to receive a secondary carrier establishment request including a mobility restriction list cell sent by the main distribution unit;

[0246] A response module 52, configured to generate a secondary carrier establishment success response message according to the mobility restriction list cell in the secondary carrier establishment request, and return the secondary carrier establishment success response message to the main distribution unit, so that the main distribution unit can obtain a UE context modification response message based on the secondary carrier establishment success response message, and configure the to - be - aggregated secondary carrier for the user equipment UE based on the UE context modification response message.

[0247] In an alternative implementation, the secondary distribution unit 50 further includes: a matching module 53, configured to match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, and the response module is specifically configured to generate a secondary carrier establishment success response message according to the matching result.

[0248] In an alternative implementation, the UE context modification request message further includes: a secondary cell pre-establishment cause value, and the matching module 53 is further configured to:

[0249] Determine the priority of the secondary carrier configuration according to the secondary cell pre-establishment cause value;

[0250] Configure the secondary carrier to be aggregated for the user equipment UE according to the priority of the secondary carrier configuration.

[0251] In an alternative implementation, the secondary cell pre-establishment cause value is at least one of the following:

[0252] A first type of cause value corresponding to resource congestion on the primary base station side;

[0253] A second type of cause value corresponding to the traffic volume of the user equipment UE;

[0254] A third type of cause value corresponding to the service type of the user equipment UE;

[0255] A fourth type of cause value corresponding to maximizing the estimated cell spectral efficiency;

[0256] A fifth type of cause value corresponding to signal measurement and a sixth type of cause value corresponding to other causes.

[0257] In an alternative implementation, the matching module 53 is specifically configured to:

[0258] Obtain the user group identifier in the UE subscription information corresponding to the mobility restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit;

[0259] Match the user group identifier in the UE subscription information corresponding to the mobility restriction list cell with the user group identifier in the network configuration information;

[0260] Then the response module is specifically configured to: when the matching result shows a successful match, generate the secondary carrier establishment success response message according to the successfully matched user group identifier.

[0261] In an alternative implementation, the matching module 53 is specifically configured to:

[0262] Determine whether the user equipment (UE) supports a non-public network (NPN) according to the UE subscription information, and determine whether the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a preset type according to the network configuration information, to obtain a determination result;

[0263] When the determination result meets a preset condition, obtain the user group identifier in the UE subscription information corresponding to the mobility restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit;

[0264] Wherein, the preset condition includes: the user equipment (UE) supports a non-public network (NPN), and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a first preset type; or, the user equipment (UE) does not support a non-public network (NPN), and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a second preset type.

[0265] In an optional implementation manner, the response module 52 is specifically configured to:

[0266] Obtain the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit included in the secondary carrier establishment request;

[0267] Perform time domain staggering processing on the initial radio dedicated admission resources of the secondary carrier corresponding to the secondary distribution unit according to the initial radio dedicated admission resources of the primary carrier corresponding to the primary distribution unit, to obtain the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit;

[0268] Return a secondary carrier establishment success response message including the radio dedicated admission resources of the staggered secondary carrier corresponding to the secondary distribution unit to the primary distribution unit.

[0269] In an optional implementation manner, the secondary distribution unit includes: a secondary distribution unit corresponding to the secondary carrier to be aggregated; the response module 52 is further configured to:

[0270] Obtain the coordination configuration information included in the secondary carrier modification request message of the primary distribution unit;

[0271] Implement message communication between the MAC layers of any two distribution units according to the coordination configuration information.

[0272] In an optional implementation manner, the secondary distribution unit 50 further includes: a second coordination configuration module 54, wherein the second coordination configuration module 54 is used for:

[0273] In response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determine the primary carrier or secondary carrier corresponding to the uplink control information of the preset type;

[0274] According to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type and the coordinated configuration information, determine the primary distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type;

[0275] Forward the uplink control information of the preset type to the primary distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type.

[0276] In a sixth aspect, Figure 14 A block diagram of the composition of a master central unit provided by an embodiment of the present disclosure is shown. Referring to Figure 14 An embodiment of the present disclosure provides a master central unit 60, which may be included in the master base station corresponding to the user equipment UE, and includes:

[0277] A sending module 61, configured to send a UE context modification request message to the primary distribution unit included in the master base station; wherein, the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell;

[0278] A receiving module 62, configured to receive a UE context modification response message returned by the primary distribution unit, and configure the to-be-aggregated secondary carrier for the user equipment UE according to the UE context modification response message;

[0279] Wherein, the UE context modification response message is generated by the above method.

[0280] Wherein, the sending module 61 is further configured to: obtain the mobility restriction list cell, and add the mobility restriction list cell to the UE context modification request message, so that the UE context modification request message includes the mobility restriction list cell.

[0281] For the specific structures and working principles of the above respective modules, reference may be made to the descriptions of the corresponding parts of the method embodiments, which will not be elaborated here.

[0282] In a seventh aspect, Figure 15 A block diagram of the composition of a secondary carrier configuration system provided by an embodiment of the present disclosure is shown. Referring to Figure 15 An embodiment of the present disclosure provides a secondary carrier configuration system 70, including: the primary distribution unit 40 provided in the fourth aspect above, the secondary distribution unit 50 provided in the fifth aspect above, and the master central unit 60 provided in the sixth aspect above.

[0283] In an eighth aspect, referring toFigure 16 , embodiments of the present disclosure provide an electronic device, which includes at least one processor 801; at least one memory 802; and one or more I / O interfaces 803 connected between the processor 801 and the memory 802; wherein, the memory 802 stores one or more computer programs executable by at least one processor 801, and the one or more computer programs are executed by at least one processor 801 to enable at least one processor 801 to execute the configuration method of the secondary carrier provided in any of the above aspects.

[0284] In a ninth aspect, embodiments of the present disclosure provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the configuration method of the secondary carrier provided in any of the above aspects.

[0285] For ease of understanding, the following takes a specific example to introduce the specific implementation details in the above embodiments in detail.

[0286] Figure 17 It is a schematic diagram of downlink splitting of cross-site secondary carriers provided for a specific example of the present disclosure.

[0287] According to the 3GPP protocol, carrier aggregation is performed at the data link layer. Based on the optional2 RAN logical architecture provided in Chapter 11 of the 3GPP 38.801 protocol, Figure 17 It is shown that in this specific example, carrier aggregation data splitting is performed in the RLC_H protocol deployment unit.

[0288] Refer to Figure 17 , RLC_H, RLC_L, MAC, and PHY are respectively the RLC layer protocol deployment unit, MAC layer protocol deployment unit, and PHY layer protocol deployment unit using the 3GPP standard. The functions of each service layer deployed by the base station are as follows:

[0289] RLC_H: functions such as PDU packet assembly and ARQ;

[0290] RLC_L: SDU segmentation, PDU header revision, etc.;

[0291] MAC: data frame scheduling and resource allocation, HARQ (Hybrid Automatic Repeat Request) processing, MAC layer control signaling transmission;

[0292] PHY: wireless signal modulation and demodulation, scheduling and resource allocation;

[0293] The RLC PDU is identified as the radio link control protocol data unit.

[0294] Figure 18 It is a schematic diagram of collaborative link establishment provided for a specific example of the present disclosure.

[0295] After each logical station cell is successfully established, the configuration of the cell coordination relationship is triggered for the cell supporting CA. The DU control plane coordination link management unit triggers the establishment of the coordination cell relationship used by the UE process control unit; the establishment process is linked to trigger the establishment of the MAC layer coordination link management unit.

[0296] The control plane collaborative link management unit is responsible for managing the control plane collaborative link. After the control plane collaborative link is established, it is mainly used for the source station DU and the target station DU to exchange NR auxiliary carrier establishment, modification and release messages.

[0297] The control plane collaborative link establishment request message includes: the source base station Global gNB ID, and the NR CGI of all cells configured to support CA; the control plane collaborative link establishment success response message includes: the target base station Global gNB ID, and the NR CGI of all cells configured to support CA.

[0298] The MAC layer collaborative link management unit is responsible for establishing the collaborative link of the MAC layer protocol deployment unit. The MAC layer collaborative link establishment request message includes: all carrier IDs supporting CA and the corresponding physical cell IDs, NR CGI; the collaborative link establishment success response message replied by the other end includes: all carrier IDs configured to support CA and the corresponding physical cell IDs, NR CGI of the other end base station.

[0299] Reference Figure 18 , UE accesses Pcell1, and adds auxiliary carriers scell_1, scell_2, scell_3 and scell_4 as cross-site auxiliary carriers. DU_1 sends UE-level auxiliary carrier configuration processing messages to DU_2, DU_3 and DU_4 respectively, including UE auxiliary carrier establishment request and response messages, UE auxiliary carrier modification request and response messages and UE auxiliary carrier reconfiguration completion indication notification messages. The signaling message flow is marked with arrows 1, 2 and 3. Before the UE-level auxiliary carrier configuration message is exchanged, each DU will exchange non-UE-level configuration messages to obtain the corresponding collaborative neighboring cell information, including service layer collaborative link establishment request and response messages between DU_1, DU_2, DU_3 and DU_4. Among them, Figure 18The signaling 1 in it represents the signaling for transmitting various requests or messages between DU_1 (i.e., the primary DU) and DU_2 (i.e., the secondary DU). The signaling 2 represents the signaling for transmitting various requests or messages between DU_1 (i.e., the primary DU) and DU_3 (i.e., the secondary DU). The signaling 3 represents the signaling for transmitting various requests or messages between DU_1 (i.e., the primary DU) and DU_4 (i.e., the secondary DU). Correspondingly, the signaling 4 represents the signaling for transmitting various requests or messages between DU_2 and DU_3. The signaling 5 represents the signaling for transmitting various requests or messages between DU_2 and DU_4. The signaling 6 represents the signaling for transmitting various requests or messages between DU_3 and DU_4.

[0300] After the cross-site secondary carrier configuration is completed, the DUs where each cross-site secondary carrier is located send secondary carrier activation or deactivation messages to DU_1 where the primary carrier is located. MAC layer service coordination scheduling messages are transmitted between the primary DU and the secondary DUs and between the secondary DUs.

[0302] Figure 19 It is a schematic diagram of the MAC layer downlink data AN feedback message flow for a specific example of the present disclosure.

[0303] Refer to Figure 19 , DU_2, DU_3, and DU_4 send downlink data transmissions to the UE. After DU_1 receives the UL ACK / NACK feedback message of the downlink data of the terminal UE, DU_1 distributes the downlink feedback confirmation messages corresponding to each secondary carrier to DU_2, DU_3, and DU_4.

[0304] Figure 20 It is a flowchart of a cross-site secondary carrier establishment and configuration process for a specific example of the present disclosure. Refer to Figure 20 , this process includes the following operations:

[0305] After the UE accesses the gNodeB_1 composed of CU_1 and DU_1, CU_1 sends a UE context modification request message of the F1 interface carrying a secondary cell pre-establishment list cell and a mobility restriction list cell to DU_1.

[0306] The UE process control unit on the DU_1 side determines that the sCell (secondary carrier) in the secondary cell pre-establishment list cell is not within the cell range configured by gNodeB_1, but the gNodeB to which the sCell belongs has a CA cooperation relationship with this gNodeB_1. DU_1 sends a secondary carrier establishment request 1 message to DU_2 where scell_1 and scell_2 are located, carrying message cells including: the Global gNB ID of the primary base station where the UE accesses the primary cell, the Global gNB ID of the secondary base station where the secondary cell is located, the NR CGI of the primary cell, UE secondary carrier related information: the identifier of the secondary carrier within the UE (sCellIndex), the NR CGI of the requested added secondary cell scell, the CA type (whether uplink CA is supported), etc., the PhysicalCellGroupConfig information and MAC-CellGroupConfig information for configuring the secondary carrier of this UE on the cross-site gNB DU_2 side, C-RNTI (Cell Radio Network Temporary Identifier), UE capability information and mobile restriction list information, the admission reference resources of scell_1 and scell_2 in DU_2: the radio dedicated admission resources of the UE primary cell (spCellConfigDedicated information, corresponding to the cell in 3GPP38.331 protocol, the dedicated cell configuration of the UE primary carrier), the RLC-BearerConfig information of the SRB (signalling radio bearer) and DRB (data radiobearer) of this UE in the secondary carrier and the source DU primary carrier RLC_H shunt IP address and other information. After processing, DU_2 replies with a secondary carrier establishment response 1 message to the UE process control unit of the master DU_1. The secondary carrier establishment response 1 message carries the radio dedicated admission resources of the secondary cells of scell_1 and scell_2 allocated by the target station (sCellConfigDedicated information, corresponding to the cell in 3GPP38.331 protocol, the dedicated cell configuration of the UE secondary carrier) and the RLC_L layer shunt IP addresses of scell_1 and scell_2 allocated by the target station.

[0307] The master DU_1 receives the secondary carrier establishment response 1 message (also called the secondary carrier establishment success response message) replied by DU_2.

[0308] DU_1 sends the secondary carrier establishment request 2 message to DU_3 where scell_3 is located, carrying the following information elements: the Global gNB ID of the primary base station where the UE accesses the primary cell, the Global gNB ID of the secondary base station where the secondary cell is located, the NR CGI of the primary cell, UE secondary carrier related information: the identifier of the secondary carrier within the UE, the NR CGI of the secondary cell scell whose addition is requested, the CA type (whether uplink CA is supported), etc., the PhysicalCellGroupConfig information and MAC-CellGroupConfig information for configuring the secondary carrier of this UE on the cross-site gNB DU_3 side, C-RNTI, UE capability information and mobility restriction list information, the admission reference resources of scell_3 in DU_3: the radio dedicated admission resources of the UE primary cell and the radio dedicated admission resources of the admission responses of the secondary cells scell_1 and scell_2, the RLC-BearerConfig information of the SRB and DRB of this UE in the secondary cell and the source DU primary cell RLC_H split IP address, etc. After processing, DU_3 replies with the secondary carrier establishment response 2 message to the UE process control unit of the master DU_1. The response message 2 carries the radio dedicated admission resources of the secondary cell of scell_3 allocated by the target station and the RLC_L layer split IP address of scell_3 allocated by the target station.

[0309] DU_3 replies with the secondary carrier establishment response 2 message (also called the secondary carrier establishment success response message), carrying the UE radio dedicated admission resource configuration of scell_3.

[0310] After the master DU_1 receives the secondary carrier establishment response 2 message replied by DU_3, the master DU_1 sends a secondary carrier establishment request 3 message to DU_4 where scell_4 is located, carrying information elements including: the Global gNBID of the primary base station where the UE accesses the primary cell, the Global gNB ID of the secondary base station where the secondary cell is located, the NR CGI of the primary cell, UE secondary carrier related information: the identifier of the secondary carrier within the UE, the NR CGI of the requested secondary cell scell to be added, the CA type (whether uplink CA is supported), etc., the PhysicalCellGroupConfig information and MAC-CellGroupConfig information of the UE secondary carrier configured on the cross-site gNB DU_4 side, C-RNTI, UE capability information and mobile restriction list information, the admission reference resources of scell_4 in DU_4: the radio dedicated admission resources of the UE primary cell and the radio dedicated admission resources of the admission responses of scell_1, scell_2, scell_3 in the secondary cell, the RLC-BearerConfig information of the SRB and DRB of the UE in the secondary cell and the RLC_H split IP address of the source DU primary carrier, etc. After DU_4 processes it, it replies a secondary carrier establishment response 3 message to the UE process control unit of the master DU_1. The secondary carrier establishment response 3 message carries the radio dedicated admission resources of the secondary cell of scell_4 allocated by the target station and the RLC_L layer split IP address of scell_4 allocated by the target station.

[0311] DU_4 scell_4 replies the secondary carrier establishment response 3 message carrying the UE radio dedicated admission resource configuration of scell_4.

[0312] After the master DU_1 collects the UE radio dedicated admission resource configurations of scell_1, scell_2, scell_3 and scell_4, it performs staggering and configuration processing with the resources of the primary cell cell_1; at the same time, it notifies the RLC layer deployment module of the master DU_1 where the primary carrier is located of the RLC split target IP addresses of the other DUs where the scells are located that have been collected.

[0313] The master DU_1 sends a secondary carrier modification request message to DU_2, DU_3, and DU_4 to notify their respective coordination information. Specifically, the master DU_1 sends a secondary carrier modification request 1 to DU_2, a secondary carrier modification request 2 to DU_3, and a secondary carrier modification request 3 to DU_4. Correspondingly, DU_2 returns a secondary carrier modification response 1 to the master DU_1, DU_3 returns a secondary carrier modification response 2 to the master DU_1, and DU_4 returns a secondary carrier modification response 3 to the master DU_1. The coordination request message for each sCell includes: the radio dedicated admission resource spCellConfigDedicated of the UE's primary carrier, the radio dedicated admission resource sCellConfigDedicated information of other secondary carriers of the UE, the physical cell identifier, carrier identifier, NR cell global identifier of the primary carrier, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index (3GPP 38.473 protocol ServCellIndex) of the primary carrier corresponding to the primary distribution unit, and the pre-established list of secondary cells corresponding to each secondary distribution unit.

[0314] The master DU_1 replies with an F1 interface UE context modification response message carrying a cell group configuration information element (3GPP 38.331 protocol cellGroupConfig information element) containing the sCell configuration to the CU. The CU issues an RRC reconfiguration message (3GPP 38.331 protocol RRCReconfiguration) to the terminal UE, and subsequently completes the configuration addition of the inter-site sCell upon receiving the RRCReconfigurationComplete message from the terminal UE.

[0315] The secondary carrier establishment request message sent by the master DU_1 to the DUs where each sCell is located carries the mobility restriction list information passed by CU_1 to each DU. After receiving it, each DU uses the subscription information of the user equipment UE in the mobility restriction list and combines it with the network configuration information supported by each DU's secondary cell to perform the admission decision for each sCell. If the match is successful, a secondary carrier establishment success response message is returned; if the match fails, a secondary carrier establishment failure response message carrying the NPN network failure cause value is returned. As shown in the figure, the master DU_1 sends a secondary carrier reconfiguration completion confirmation request 1 to DU_2, a secondary carrier reconfiguration completion confirmation request 2 to DU_3, and a secondary carrier reconfiguration completion confirmation request 3 to DU_4. Correspondingly, DU_2 returns a secondary carrier reconfiguration completion confirmation response 1 to the master DU_1, DU_3 returns a secondary carrier reconfiguration completion confirmation response 2 to the master DU_1, and DU_4 returns a secondary carrier reconfiguration completion confirmation response 3 to the master DU_1.

[0316] In summary, a method and system for configuring a secondary carrier provided by a specific example of an embodiment of the present disclosure have the following beneficial effects:

[0317] (1) By adding a mobility restriction list cell to the F1 interface UE context modification request message, it is possible to directly communicate between DUs to configure cross-site secondary carriers, so that the addition and configuration of cross-site secondary carriers are adapted to the scenario where a public network and an NPN private network coexist, further broadening the application scenario of this method.

[0318] (2) By using the direct communication technology between DUs to quickly add cross-site secondary carriers, including the direct communication between the master DU and the secondary DU and the direct communication between secondary DUs, the present invention is applicable to the addition of multiple cross-site secondary carriers in various networking scenarios of CRAN and DRAN, improving the service traffic and significantly enhancing the user experience.

[0319] (3) By deploying a UE process control unit on the DU to achieve direct communication between the UE service process control units between DUs, the addition of cross-site secondary carriers is made more rapid and efficient; similarly, the establishment of a MAC layer cooperative link between DUs is conducive to the faster transmission of subsequent internal UE scheduling information at the MAC layer, thereby improving user traffic and further expanding the application of this method to the addition of cross-site secondary carriers in various CRAN and DRAN networking modes.

[0320] Among them, the processor is a device with data processing capabilities, including but not limited to a central processing unit (CPU), etc.; the memory is a device with data storage capabilities, including but not limited to a random access memory (RAM, more specifically such as SDRAM, DDR, etc.), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory (FLASH); the I / O interface (read / write interface) is connected between the processor and the memory and can realize the information interaction between the memory and the processor, including but not limited to a data bus (Bus), etc.

[0321] Those of ordinary skill in the art can understand that all or some of the steps, systems, and functional modules / units in the devices disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof.

[0322] In the hardware implementation, the division of the functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component can have multiple functions, or a function or step can be executed by several physical components in cooperation.

[0323] Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit (CPU), a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-temporary medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH) or other disk storage; read-only compact disk (CD-ROM), digital versatile disk (DVD) or other optical disk storage; magnetic cassettes, magnetic tapes, disk storage or other magnetic storage; any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0324] The present disclosure has disclosed example embodiments, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for limiting purposes. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly stated, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, those skilled in the art will appreciate that various changes in form and detail may be made without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

1. A method for configuring a secondary carrier, characterized in that, it is applicable to a master distributed unit (DU) included in a master base station corresponding to a user equipment (UE), and the method includes: determining a secondary carrier to be aggregated according to a secondary cell pre - establishment list cell in a UE context modification request; sending a secondary carrier establishment request to the secondary distributed unit based on a carrier aggregation cooperation relationship of the secondary distributed unit corresponding to the secondary carrier to be aggregated, where the secondary carrier establishment request includes a mobility restriction list cell in the UE context modification request; determining a UE context modification response message based on a secondary carrier establishment success response message corresponding to the secondary carrier establishment request, so that the secondary carrier to be aggregated is configured for the user equipment (UE) based on the UE context modification response message.

2. The method according to claim 1, characterized in that, the secondary carrier establishment request further includes: an initial radio dedicated admission resource of the primary carrier corresponding to the master distributed unit; the secondary carrier establishment success response message includes: a radio dedicated admission resource of the staggered - processed secondary carrier corresponding to the secondary distributed unit.

3. The method according to claim 2, characterized in that, when the number of secondary carriers to be aggregated is multiple and the number of secondary distributed units corresponding to the secondary carriers to be aggregated is multiple, before determining the UE context modification response message based on the secondary carrier establishment success response message corresponding to the secondary carrier establishment request, it further includes: performing time - domain staggering processing on the initial radio dedicated admission resource of the primary carrier corresponding to the master distributed unit according to the radio dedicated admission resource of the staggered - processed secondary carrier corresponding to each secondary distributed unit, to obtain the radio dedicated admission resource of the staggered - processed primary carrier corresponding to the master distributed unit; generating cooperative configuration information according to the radio dedicated admission resource of the staggered - processed primary carrier corresponding to the master distributed unit and the radio dedicated admission resource of the staggered - processed secondary carrier corresponding to each secondary distributed unit, and generating a secondary carrier modification request message according to the cooperative configuration information; sending the secondary carrier modification request message to each secondary distributed unit respectively, and receiving a secondary carrier modification response message returned by each secondary distributed unit.

4. The method according to claim 3, characterized in that, generating the cooperative configuration information according to the radio dedicated admission resource of the staggered - processed primary carrier corresponding to the master distributed unit and the radio dedicated admission resource of the staggered - processed secondary carrier corresponding to each secondary distributed unit includes: obtaining a NR cell global identifier of the primary carrier corresponding to the master distributed unit, NR cell global identifiers of the secondary carriers corresponding to each secondary distributed unit, a serving cell index of the primary carrier corresponding to the master distributed unit, and the secondary cell pre - establishment list cell corresponding to each secondary distributed unit; Generate the collaborative configuration information based on the radio dedicated admission resources of the main carrier after staggered processing corresponding to the main distribution unit, the radio dedicated admission resources of the secondary carrier after staggered processing corresponding to each secondary distribution unit, the NR cell global identifier of the main carrier corresponding to the main distribution unit, the NR cell global identifier of the secondary carrier corresponding to each secondary distribution unit, the serving cell index of the main carrier corresponding to the main distribution unit, and the secondary cell pre - establishment list cell corresponding to each secondary distribution unit; Among them, the collaborative configuration information is used to enable message communication between the MAC layers of any two distribution units.

5. The method according to claim 3, characterized in that, after receiving the secondary carrier modification response messages returned by each secondary distribution unit, it further includes: In response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determine the main carrier or secondary carrier corresponding to the uplink control information of the preset type; According to the main carrier or secondary carrier corresponding to the uplink control information of the preset type and the collaborative configuration information in the secondary carrier modification request message, determine the secondary distribution unit corresponding to the uplink control information of the preset type; Forward the uplink control information of the preset type to the secondary distribution unit corresponding to the uplink control information.

6. The method according to any one of claims 1 - 5, characterized in that, the method further includes: When the main distribution unit receives a data transmission instruction, perform data transmission with the RLC layer deployment module included in the secondary distribution unit according to the communication address of the RLC layer deployment module of the secondary carrier.

7. A method for configuring a secondary carrier, characterized in that, being applicable to a secondary distribution unit, the method includes: Receive a secondary carrier establishment request sent by the main distribution unit, which includes a mobility restriction list cell; Generate a secondary carrier establishment success response message according to the mobility restriction list cell in the secondary carrier establishment request, and return the secondary carrier establishment success response message to the main distribution unit, so that the main distribution unit can obtain a UE context modification response message based on the secondary carrier establishment success response message, and configure the to - be - aggregated secondary carrier for the user equipment UE based on the UE context modification response message.

8. The method according to claim 7, characterized in that, the generating a secondary carrier establishment success response message according to the mobility restriction list cell includes: Match the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, and generate a secondary carrier establishment success response message according to the matching result.

9. The method according to claim 8, characterized in that, the matching the UE subscription information corresponding to the mobility restriction list cell with the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit, and generating a secondary carrier establishment success response message according to the matching result includes: Obtain the user group identifier in the UE subscription information corresponding to the mobile restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit; Match the user group identifier in the UE subscription information corresponding to the mobile restriction list cell and the user group identifier in the network configuration information; If the matching result shows a successful match, generate a secondary carrier establishment success response message according to the successfully matched user group identifier.

10. The method according to claim 9, wherein, The obtaining the user group identifier included in the UE subscription information corresponding to the mobile restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit includes: Judge whether the user equipment UE supports the non-public network NPN according to the UE subscription information, and judge whether the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a preset type according to the network configuration information, to obtain a judgment result; When the judgment result meets the preset conditions, obtain the user group identifier in the UE subscription information corresponding to the mobile restriction list cell, and the user group identifier in the network configuration information supported by the secondary carrier corresponding to the secondary distribution unit; wherein, the preset conditions include: the user equipment UE supports the non-public network NPN, and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a first preset type; or, the user equipment UE does not support the non-public network NPN, and the secondary carrier corresponding to the secondary distribution unit belongs to a user group cell of a second preset type.

11. The method according to claim 7, wherein, The returning a secondary carrier establishment success response message to the master distribution unit includes: Obtain the initial radio dedicated admission resource of the primary carrier corresponding to the master distribution unit included in the secondary carrier establishment request; Perform time-domain staggering processing on the initial radio dedicated admission resource of the secondary carrier corresponding to the secondary distribution unit according to the initial radio dedicated admission resource of the primary carrier corresponding to the master distribution unit, to obtain the radio dedicated admission resource of the staggered secondary carrier corresponding to the secondary distribution unit; Return a secondary carrier establishment success response message to the master distribution unit, which includes the radio dedicated admission resource of the staggered secondary carrier corresponding to the secondary distribution unit.

12. The method according to claim 11, wherein, The secondary distribution unit includes: a secondary distribution unit corresponding to the secondary carrier to be aggregated; after returning a secondary carrier establishment success response message including the radio dedicated admission resource of the staggered secondary carrier corresponding to the secondary distribution unit to the master distribution unit, further includes: Obtain the cooperative configuration information included in the secondary carrier modification request message of the master distribution unit; Implement message communication between the MAC layers of any two distribution units according to the cooperative configuration information.

13. The method according to claim 12, wherein, After returning a secondary carrier modification response message to the master distribution unit, further includes: In response to the uplink control information of the user equipment UE, when the information type of the uplink control information is a preset type, determine the primary carrier or secondary carrier corresponding to the uplink control information of the preset type; According to the primary carrier or secondary carrier corresponding to the uplink control information of the preset type and the collaborative configuration information, determine the primary distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type; Forward the uplink control information of the preset type to the primary distribution unit or secondary distribution unit corresponding to the uplink control information of the preset type.

14. The method according to any one of claims 7-13, wherein, the method further includes: When the secondary distribution unit receives a data transmission instruction, perform data transmission with the RLC layer deployment module included in the primary distribution unit according to the communication address of the RLC layer deployment module of the primary carrier.

15. The method according to any one of claims 7-13, wherein, The UE context modification request message further includes: a secondary cell pre-establishment cause value, and configuring the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message includes: Determine the priority of the secondary carrier configuration according to the secondary cell pre-establishment cause value; Configure the secondary carrier to be aggregated for the user equipment UE according to the priority of the secondary carrier configuration.

16. The method according to claim 15, wherein, The secondary cell pre-establishment cause value is at least one of the following: A first type of cause value corresponding to resource congestion on the primary base station side; A second type of cause value corresponding to the traffic volume of the user equipment UE; A third type of cause value corresponding to the service type of the user equipment UE; A fourth type of cause value corresponding to maximizing the estimated cell spectral efficiency; A fifth type of cause value corresponding to signal measurement and a sixth type of cause value corresponding to other causes.

17. A method for configuring a secondary carrier, wherein, It is applicable to the primary central unit included in the primary base station corresponding to the user equipment UE, and the method includes: Send a UE context modification request message to the primary distribution unit included in the primary base station; wherein, the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell; Receive the UE context modification response message returned by the primary distribution unit, and configure the secondary carrier to be aggregated for the user equipment UE according to the UE context modification response message; wherein, the UE context modification response message is generated by the method according to any one of claims 1-6.

18. The method according to claim 16, wherein, Before sending the UE context modification request message to the primary distribution unit included in the primary base station, it further includes: Obtain the mobility restriction list cell, and add the mobility restriction list cell to the UE context modification request message so that the UE context modification request message includes the mobility restriction list cell.

19. A primary distribution unit, wherein, The primary distribution unit includes: A determination module, configured to determine a secondary carrier to be aggregated according to a secondary cell pre-establishment list cell in a UE context modification request; A sending module, configured to send a secondary carrier establishment request to the secondary distribution unit based on a carrier aggregation cooperation relationship of the secondary distribution unit corresponding to the secondary carrier to be aggregated, where the secondary carrier establishment request includes a mobility restriction list cell in the UE context modification request; A configuration module, configured to determine a UE context modification response message based on a secondary carrier establishment success response message corresponding to the secondary carrier establishment request, so as to configure the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

20. A secondary distribution unit, characterized in that, the secondary distribution unit includes: A receiving module, configured to receive a secondary carrier establishment request including a mobility restriction list cell sent by a primary distribution unit; A response module, configured to generate a secondary carrier establishment success response message according to the mobility restriction list cell in the secondary carrier establishment request, and return the secondary carrier establishment success response message to the primary distribution unit, so that the primary distribution unit obtains a UE context modification response message based on the secondary carrier establishment success response message, and configures the secondary carrier to be aggregated for the user equipment UE based on the UE context modification response message.

21. A master central unit, characterized in that, the master central unit includes: A sending module, configured to send a UE context modification request message to a primary distribution unit included in the primary base station; wherein, the UE context modification request message includes a secondary cell pre-establishment list cell and a mobility restriction list cell; A receiving module, configured to receive a UE context modification response message returned by the primary distribution unit, and configure the secondary carrier to be aggregated for the user equipment UE according to the UE context modification response message; wherein, the UE context modification response message is generated by the method according to any one of claims 1-6.

22. A secondary carrier configuration system, characterized in that, it includes: the primary distribution unit according to claim 19, the secondary distribution unit according to claim 20, and the master central unit according to claim 21.

23. An electronic device, characterized in that, it includes a memory and a processor; the memory stores a computer program executable by the processor, and when the computer program is executed by the processor, it implements the secondary carrier configuration method according to any one of claims 1 to 18.

24. A computer-readable storage medium, characterized in that, a computer program is stored thereon, and when the computer program is executed by a processor, it implements the secondary carrier configuration method according to any one of claims 1 to 18.

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