A method, device and readable storage medium for realizing dual link

Abstract

The present disclosure provides a method, device and readable storage medium for implementing dual link, which are applied to the field of wireless communication technology. The method includes: receiving UE capability information sent by user equipment UE, the UE capability information is used to indicate whether a first capability is supported, the first capability corresponds to a priority of implementing dual link higher than a priority of implementing carrier aggregation in a first network, and the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which a second base station belongs; and executing a processing flow of adding a secondary base station according to the UE capability information. The present disclosure can overcome the problem of dual link registration failure when the UE does not have the capability of directly adding a secondary base station.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technology, and in particular to a method, device and readable storage medium for implementing dual links. Background Art

[0002] 3GPP has defined two solutions for 5G New Radio (NR) networking, namely Standalone (SA) and Non-Standalone (NSA). Among them, non-standalone networking is to anchor the control plane of the new wireless technology to the existing LTE core network, while standalone networking means that the user plane and control plane of NR are independently deployed on 5G. The independent networking mode of 5G New Radio requires independent deployment of 5G end-to-end network, new base stations and core network, so 5G can work without relying on LTE. The non-standalone networking mode can rely on the existing LTE network to meet the first-mover needs of some operators on 5G. Summary of the invention

[0003] The present disclosure provides a method, an apparatus and a readable storage medium for implementing dual links.

[0004] In a first aspect, a method for implementing dual link is provided, which is applied to a first base station and includes:

[0005] receiving UE capability information sent by a user equipment UE, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority of implementing a dual link that is higher than a priority of implementing carrier aggregation in a first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs;

[0006] A process of adding a secondary base station is executed according to the UE capability information.

[0007] In some possible implementations, the receiving UE capability information sent by user equipment UE includes:

[0008] Receive a value UE-MRDC-Capability sent by the UE, where the value UE-MRDC-Capability includes a bit used to indicate whether the first capability is supported.

[0009] In some possible implementations, the process of performing a process of adding a secondary base station according to the UE capability information includes:

[0010] receiving a message sent by the second base station and indicating a failure in adding the secondary base station, where the message includes a failure reason, where the failure reason is that the UE does not have a capability of directly adding the secondary base station;

[0011] It is determined that the UE supports the first capability, and a processing flow of adding a secondary base station is executed according to the dual-link carrier aggregation capability supported by the UE.

[0012] In some possible implementations, the process of performing a process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE includes:

[0013] Determine, according to the frequency band combination in the dual link carrier aggregation capability supported by the UE and the frequency band combination in the first network carrier aggregation capability supported by the UE, at least one frequency band of the first network to be released in the first network carrier aggregation capability;

[0014] Sending indication information to the UE, where the indication information indicates releasing the frequency band of the at least one first network to be released.

[0015] In some possible implementations, determining at least one frequency band of the first network to be released according to the frequency band combination in the dual link carrier aggregation capability supported by the UE and the frequency band combination in the first network carrier aggregation capability supported by the UE includes:

[0016] It is determined that at least one frequency band of the first network to be released is a frequency band that belongs to a frequency band combination in the carrier aggregation capability of the first network and does not belong to a frequency band combination in the dual-link carrier aggregation capability.

[0017] In some possible implementations, the process of performing a process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE further includes:

[0018] A request message is sent to the second base station, where the request message is used to request adding a secondary base station, where the request message includes main cell group MCG configuration information, where the main cell group MCG configuration information includes a first network carrier aggregation frequency band combination corresponding to the UE after release.

[0019] In some possible implementations, the process of performing a process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE further includes:

[0020] A message sent by the second base station to indicate that the secondary base station is added successfully is received, and a radio link control reconfiguration message is sent to the UE, where the radio link control reconfiguration message includes secondary cell group SCG configuration information.

[0021] In some possible implementations, the first base station is an eNB, and the second base station is a gNB.

[0022] In a second aspect, a method for implementing dual link is provided, which is performed by a user equipment UE, and the method includes:

[0023] Sending UE capability information to the first base station, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority for implementing a dual link that is higher than a priority for implementing carrier aggregation in the first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs;

[0024] A process of adding a secondary base station is executed according to the UE capability information.

[0025] In some possible implementations, the sending UE capability information to the first base station includes:

[0026] Sending a value UE-MRDC-Capability to the first base station, where the value UE-MRDC-Capability includes a bit used to indicate whether the first capability is supported.

[0027] In some possible implementations, the process of performing a process of adding a secondary base station according to the UE capability information includes:

[0028] In response to the UE capability information indicating support for the first capability, receiving indication information sent by the first base station, where the indication information indicates release of at least one frequency band of the first network to be released;

[0029] The frequency band indicated by the indication information is released in the first network carrier aggregation capability.

[0030] In some possible implementations, the at least one frequency band of the first network to be released is determined according to a frequency band combination in a dual-link carrier aggregation capability supported by the UE and a frequency band combination in a first network carrier aggregation capability supported by the UE.

[0031] In some possible implementations, the at least one frequency band of the first network to be released is: a frequency band belonging to a frequency band combination in the first network carrier aggregation capability, and does not belong to a frequency band combination in the dual-link carrier aggregation capability.

[0032] In some possible implementations, the method further includes:

[0033] A radio link control reconfiguration message is received from the first base station, where the radio link control reconfiguration message includes secondary cell group (SCG) configuration information.

[0034] In a third aspect, a device for implementing dual link is provided, which is configured in a first base station and includes:

[0035] a transceiver module, configured to receive UE capability information sent by a user equipment UE, the UE capability information being used to indicate whether a first capability is supported, the first capability corresponding to a priority of implementing a dual link being higher than a priority of implementing carrier aggregation in a first network, the dual link corresponding to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs;

[0036] The processing module is configured to execute a processing flow of adding a secondary base station according to the first capability information.

[0037] In a fourth aspect, a device for implementing dual link is provided, which is configured in a user equipment and includes:

[0038] The transceiver module is configured to send UE capability information to the first base station, where the UE capability information is used to indicate whether a first capability is supported, where the priority of the first capability corresponding to implementing dual links is higher than the priority of implementing carrier aggregation in the first network, and the dual links correspond to a link with the first network to which the first base station belongs and a link with the second network to which the second base station belongs.

[0039] In a fifth aspect, an electronic device is provided, including a processor and a memory, wherein:

[0040] The memory is used to store computer programs;

[0041] The processor is used to execute the computer program to implement the first aspect or any possible design of the first aspect.

[0042] In a sixth aspect, a communication device is provided, including a processor and a memory, wherein:

[0043] The memory is used to store computer programs;

[0044] The processor is used to execute the computer program to implement the second aspect or any possible design of the second aspect.

[0045] In a seventh aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium. When the instructions are called and executed on a computer, the computer executes the first aspect or any possible design of the first aspect.

[0046] In an eighth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are called and executed on a computer, the computer executes the second aspect or any possible design of the second aspect.

[0047] In the present disclosure, the UE capability of the UE can be set to indicate whether the first capability is supported. The first capability is used to indicate that the priority of the UE to realize dual link is higher than the priority of realizing carrier aggregation in the first network. When the UE supports the first capability and the first base station fails to request the second base station to add a secondary base station during the dual link registration process because the UE does not have the ability to directly add the secondary base station, one or more frequency bands of the first network can be released in the carrier aggregation, so that the current carrier aggregation capability of the UE of the first network meets the requirements of the configured dual link carrier aggregation capability, so that the addition is successfully completed by sending the request to add the secondary base station again, and the registration of the dual link is completed. The embodiment of the present disclosure can overcome the problem of dual link registration failure when the UE does not have the ability to directly add the secondary base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The drawings described herein are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of this application. The illustrative embodiments of the embodiments of the present disclosure and their descriptions are used to explain the embodiments of the present disclosure and do not constitute an improper limitation on the embodiments of the present disclosure. In the drawings:

[0049] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the present disclosure, and together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0050] Figure 1 is a schematic diagram of NAS networking in a dual anchor point implementation manner provided by an embodiment of the present disclosure;

[0051] Figure 2 is a schematic diagram of NAS networking in a single anchor point implementation manner provided by an embodiment of the present disclosure;

[0052] Figure 3 is a flowchart of a method for adding a secondary base station in NSA provided by an embodiment of the present disclosure;

[0053] Figure 4 is a schematic diagram of a failure in adding a secondary base station in NSA provided by an embodiment of the present disclosure;

[0054] Figure 5 is a schematic diagram of a method for implementing dual links provided by an embodiment of the present disclosure;

[0055] Figure 6 is a schematic diagram of a method for implementing dual links provided by an embodiment of the present disclosure;

[0056] Figure 7 is a schematic diagram of a method for implementing dual links provided by an embodiment of the present disclosure;

[0057] Figure 8 is a schematic diagram of a device for implementing dual links provided by an embodiment of the present disclosure;

[0058] Fig. 9 is a schematic diagram of a device for implementing dual links provided by an embodiment of the present disclosure;

[0059] Fig.10 is a schematic diagram of a device for implementing dual links provided by an embodiment of the present disclosure;

[0060] Fig.11 It is a schematic diagram of a device for implementing dual links provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0061] The embodiments of the present disclosure are now further described in conjunction with the accompanying drawings and specific implementation methods.

[0062] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0063] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "an" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0064] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at" or "when" or "in response to determination".

[0065] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and cannot be understood as limiting the present disclosure.

[0066] The NSA access network sharing implementation plan requires that both parties build their 4G core networks independently, interconnect their bearer networks, share 5G base stations, and share 4G base stations on demand. The shared base stations are configured with the PLMN numbers of both operators. A single shared base station is virtualized as two base stations, A and B, which are connected to their respective core networks through the base station backhaul network and serve 5G users on both sides at the same time.

[0067] From the perspective of anchor 4G base station settings, the NSA access network sharing solution can be divided into dual-anchor point implementation and single-anchor point implementation.

[0068] like Figure 1 In the dual anchor point implementation shown, the 4G core networks of both parties are built independently, and only the 5G base stations are shared. The 4G base stations are not shared, and the shared 5G base stations are dual-linked to the 4G core networks of both parties. The dual anchor point solution requires that within the 5G coverage area, the 4G base stations of both parties are equipment from the same manufacturer and upgraded to support the anchor point function. The 4G anchor point base station and the 5G shared base station are equipment from the same manufacturer, and the 5G shared base station is required to establish an X2 interface with the 4G anchor point base stations of both parties respectively. The X2 link between the 4G of the sharing party and the 5G base station of the contractor is manually added and maintained.

[0069] like Figure 2 In the single anchor point implementation shown, the 4G core networks of both parties are built independently, the 5G base station and the 4G anchor base station are shared at the same time, and the dual uplinks are connected to the 4G core networks of both parties. The single anchor point implementation requires that the shared 5G base station and the 4G anchor base station are equipment from the same manufacturer and establish an X2 interface; the shared 4G anchor base station broadcasts the PLMN of both parties at the same time.

[0070] NSA (Non-Standalone) networking based on EPC (Evolved Packet Core) is a terminal with NSA dual-link capability connected to LTE base station and NR base station (LTE-NR NSA DC), using the wireless resources of the two base stations for transmission. It supports data split transmission between the two base stations, and the carriers on the eNodeB side and the gNodeB side are aggregated separately before dual linking.

[0071] like Figure 3 As shown, the method for adding a secondary base station in NSA includes:

[0072] S301, user equipment (UE) completes the attachment process in the 4G network, and the 4G base station sends a 5G measurement configuration to the UE.

[0073] S302, UE performs 5G measurement and reports the measurement results.

[0074] S303, the 5G base station sends NR configuration parameters to the UE.

[0075] S304, UE searches for SSB in the 5G network and completes downlink synchronization.

[0076] S305, the UE completes the random access process in the 5G network.

[0077] Among them, in the process of UE initial attachment, after the UE completes the LTE initial access process, it also includes:

[0078] S1, NR measurement control is sent down through RRC reconfiguration: including measurement event B1 and related thresholds, NR absolute frequency point number, etc.;

[0079] S2: The UE replies that the RRC connection reconfiguration is complete, indicating that the UE performs measurement configuration on the RRC protocol side of the UE according to the measurement control issued by the eNodeB, and sends an RRC Connection Reconfigration Complete message to the eNodeB to indicate that the measurement configuration is complete.

[0080] S3: UE starts measurement. When a NR cell that meets the conditions is found, the UE reports the PCI and RSRP of the NR cell through measurement reporting.

[0081] S4: After receiving the B1 measurement report, the eNB triggers the gNB Addition process and adds the NR cell in the B1 measurement report to the gNB Addition Request message and sends it to the gNB. The gNB selects the NR cell with the strongest RSRP in the report. The request message carries the split bearer mode (MCG Split Bearer or SCG Split Bearer), E-RAB information, etc. In addition, the eNB includes the MCG configuration (DRB configuration, cell configuration, encryption algorithm of SCG bearer, etc.) and UE capabilities in the SCG-Config Info.

[0082] S5: When the gNB determines that the admission is complete and allocates resources, it returns a gNB Addition RequestAcknowledge response message to the eNB.

[0083] S6: The eNB sends an RRC Connection Reconfiguration message to the UE, including an NR RRC Reconfig message, to configure the PCI, frequency and other information of the secondary cell to be added.

[0084] S7: After receiving the RRC reconfiguration message, the UE completes the reconfiguration and sends back an RRC ConnectionReconfiguration Complete message, including an NR RRC response message, to the eNB.

[0085] S8: The eNB confirms to the gNB that the UE has completed the reconfiguration process by sending a gNB Reconfiguration Complete message to the gNB, which contains the NR RRC response message.

[0086] S9: UE performs synchronization to the gNB PSCell and initiates a random access procedure to the gNB.

[0087] S10: For bearer type change scenarios, data forwarding between eNB and gNB is required to reduce the current service interruption time.

[0088] S11: For SCG Split Bearer offload mode, the user plane path between gNB and EPC is updated. That is, the core network is instructed to connect the S1-U interface of E-RAB to gNB through E-RAB Modification Indication.

[0089] like Figure 4 As shown, after the UE reports the measurement report of the B1 event on the 5G network, the gNB's response to the gNB addition request (gNB Addition Request) is completely dependent on the network side (i.e., the access network) behavior. If the gNB determines that the gNB addition cannot be completed, the gNB Addition Request Reject (gNB Addition Request Reject) responded by the gNB will not include the admission and resource allocation completion flags, and the subsequent UE will not be able to add the SCG, and thus will not be able to enter the dual-link state.

[0090] For example, the dual-link carrier aggregation capability of the UE includes two capabilities: B1+B3+N78 and B1+B7+N78, where B1, B3, and B7 are frequency bands in the 4G network, and N78 is a frequency band in the 5G network. When the UE performs initial registration in the LTE network, the configured LTE carrier aggregation capability is B1+B3+B7. When the gNB receives the gNB addition request from the UE and the UE supports B1+B3+B7+N78, it determines that the addition can be completed and returns an addition success message.

[0091] After the UE reports the measurement results of the NR cell, the gNB learns from the UE capabilities that the UE's dual-link carrier aggregation capability does not support B1+B3+B7+N78, and the SCG addition cannot be completed. The gNB responds with a gNB Addition Request Reject, which does not include the admission and resource allocation completion flags. After that, whether the eNB releases the secondary cell of B3 or B7 depends entirely on the implementation of the network side (access network), which results in the UE being unable to register for NSA, affecting the user experience.

[0092] In view of the above-mentioned situation in which the first base station fails to request the second base station to add an auxiliary base station during the dual-link registration process because the UE does not have the ability to directly add the auxiliary base station. A method for implementing dual links is provided in an embodiment of the present disclosure, in which the dual links are links with a first network and a second network. The first base station belongs to the first network, and the second base station belongs to the first network. After the UE accesses the first network, the base station of the second network is added as an auxiliary base station. The present disclosure proposes a method in which one or more frequency bands of the first network can be released in carrier aggregation, so that the current carrier aggregation capability of the UE of the first network meets the requirements of the configured dual-link carrier aggregation capability, so that the addition is successfully completed by sending the request to add the auxiliary base station again, and the dual-link registration is completed, thereby overcoming the problem of dual-link registration failure when the UE does not have the ability to directly add the auxiliary base station.

[0093] The embodiments of the present disclosure are applicable to but not limited to eutra-nr dual connection (ENDC), wherein the first base station is an eNB and the first network is an LTE network; the second base station is a gNB and the second network is a 5G network.

[0094] Figure 5 is a flowchart showing a method of implementing dual links according to an exemplary embodiment. Figure 5 As shown, the method includes steps S501-S513: This method includes:

[0095] S501, UE sends UE capability information (UE Capability Information) to the first base station.

[0096] The UE capability information is used to indicate whether a first capability is supported, and the first capability corresponds to a priority of implementing dual link that is higher than a priority of implementing carrier aggregation in the first network.

[0097] In some possible implementations, the UE sends UE capability information to the first base station, and an additional information field MRDC_mandatory_indicator is added to the value UE-MRDC-Capability IE in the UE capability information. This information field may occupy one or more bits to indicate whether the first capability is supported.

[0098] In an example, when the value of the information field MRDC_mandatory_indicator is 1, it indicates that the first capability is supported. When the value of the information field MRDC_mandatory_indicator is 0, it indicates that the first capability is not supported.

[0099] S502: The UE sends a measurement report (Measurement Report) to the first base station, where the measurement report is a measurement report of the second network.

[0100] S503: The first base station sends a request message to the second base station, where the request message is used to request to add a secondary base station.

[0101] In some possible implementations, the first base station sends a secondary base station adding request (gNBAddition Request) to the second base station.

[0102] S504, the second base station determines whether the secondary base station can be added, if yes, executes the corresponding process, if not, executes step S505.

[0103] In one example, the dual-link carrier aggregation capability of the UE includes two capabilities: B1+B3+N78 and B1+B7+N78, where B1, B3, and B7 are frequency bands in the 4G network, and N78 is a frequency band in the 5G network. When the UE performs initial registration in the LTE network, the configured LTE carrier aggregation capability is B1+B3+B7. When the UE supports B1+B3+B7+N78, the gNB determines that the addition can be completed and returns an addition success message.

[0104] In S504, since the dual-link carrier aggregation capability of the UE cannot support B1+B3+B7+N78, it is determined that the secondary base station cannot be added directly.

[0105] S505: The second base station sends a message to the first base station indicating that adding the secondary base station fails.

[0106] In some possible implementations, the first base station sends a gNB Addition Request Reject message to the second base station.

[0107] The message also includes a failure reason, which is that the UE does not have the capability of directly adding a secondary base station.

[0108] S506, the first base station determines whether the UE supports the first capability, if yes, executes step S506, if no, executes according to the original processing mechanism.

[0109] S507: The first base station determines at least one frequency band of the first network to be released according to the frequency band combination in the dual-link carrier aggregation capability supported by the UE and the frequency band combination in the first network carrier aggregation capability supported by the UE.

[0110] In some possible implementations, a method for determining at least one frequency band of the first network to be released is: a frequency band belonging to a frequency band combination in the carrier aggregation capability of the first network, and not belonging to a frequency band combination in the dual-link carrier aggregation capability.

[0111] According to this method, a releasable frequency band can be accurately selected. After releasing this frequency band, the first network carrier aggregation capability currently satisfied by the UE meets the dual-link carrier aggregation capability that the UE can support, so that the secondary base station can be successfully added after initiating a request to add a secondary base station again.

[0112] According to the above example, the determined frequency band of the first network to be released is B3 or B7.

[0113] S508: The first base station sends indication information to the UE, where the indication information indicates to release the at least one frequency band of the first network to be released.

[0114] For example, the indication information is RRC Connection Reconfiguration, which includes sCellToAddReleaseList-r10 for indicating the frequency band of at least one first network to be released determined in the previous step.

[0115] According to the above example, the instruction information indicates to release B3 or B7.

[0116] S509: The UE releases the frequency band indicated by the indication information in the first network carrier aggregation capability.

[0117] According to the above example, when the indication information indicates to release B3, the UE releases B3 in the first network carrier aggregation capability, so that the first network carrier aggregation capability of the UE is B1 + B7. When the indication information indicates to release B7, the UE releases B3 in the first network carrier aggregation capability, so that the first network carrier aggregation capability of the UE is B1 + B3.

[0118] S510, the UE sends a confirmation response to the first base station.

[0119] For example: the UE sends an RRC Connection Reconfiguration Complete to the first base station.

[0120] S511. The first base station sends a request message to the second base station, where the request message is used to request to add a secondary base station.

[0121] In some possible implementations, the first base station sends a secondary base station adding request (gNBAddition Request) to the second base station.

[0122] The request message includes the main cell group MCG configuration information, and the main cell group MCG configuration information includes a first network carrier aggregation frequency band combination corresponding to the UE after the release is executed.

[0123] S512: The second base station sends an adding success response to the first base station.

[0124] In some possible implementations, the first base station sends a secondary base station addition request (gNBAddition Request Acknowledge) to the second base station.

[0125] S513: The first base station sends a radio link control reconfiguration message to the UE, where the radio link control reconfiguration message includes secondary cell group SCG configuration information.

[0126] S514: Complete the NSA registration process according to the secondary cell group SCG configuration information.

[0127] In the embodiment of the present disclosure, the UE capability of the UE can be set to indicate whether the first capability is supported. The first capability is used to indicate that the priority of the UE to realize dual link is higher than the priority of realizing carrier aggregation in the first network. When the UE supports the first capability and the first base station fails to request the second base station to add a secondary base station during the dual link registration process because the UE does not have the ability to directly add the secondary base station, one or more frequency bands of the first network can be released in the carrier aggregation, so that the current carrier aggregation capability of the first network of the UE meets the requirements of the configured dual link carrier aggregation capability, so that the addition is successfully completed by sending the request to add the secondary base station again, and the registration of the dual link is completed. The embodiment of the present disclosure can overcome the problem of dual link registration failure when the UE does not have the ability to directly add the secondary base station.

[0128] In an embodiment of the present disclosure, a method for implementing dual links is provided, wherein the dual links are links with a first network and a second network. The first base station belongs to the first network, and the second base station belongs to the first network. After the UE accesses the first network, the base station of the second network is added as a secondary base station.

[0129] The embodiments of the present disclosure are applicable to but not limited to eutra-nr dual connection (ENDC), wherein the first base station is an eNB and the first network is an LTE network; the second base station is a gNB and the second network is a 5G network.

[0130] Figure 6 is a flowchart of implementing dual link according to an exemplary embodiment, which is executed by the first base station, such as Figure 6 As shown, the method includes steps S601-S607: This method includes:

[0131] S601, receiving UE capability information sent by a user equipment UE, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority of implementing a dual link that is higher than a priority of implementing carrier aggregation in a first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which a second base station belongs;

[0132] In some possible implementations, the method for receiving UE capability information sent by user equipment UE includes:

[0133] Receive a value UE-MRDC-Capability sent by the UE, where the value UE-MRDC-Capability includes a bit used to indicate whether the first capability is supported.

[0134] S602: Execute a process of adding a secondary base station according to the UE capability information.

[0135] In some possible implementations, the process of adding a secondary base station according to the UE capability information in S602 includes:

[0136] S602-1, receiving a message sent by the second base station to indicate a failure in adding a secondary base station, where the message includes a failure reason, where the failure reason is that the UE does not have a capability of directly adding the secondary base station;

[0137] S602-2: In response to the UE supporting the first capability, executing a process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE.

[0138] In some possible implementations, the process of performing a process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE in S602-2 includes:

[0139] S602-2-1, determine at least one frequency band of the first network to be released in the first network carrier aggregation capability according to the frequency band combination in the dual-link carrier aggregation capability supported by the UE and the frequency band combination in the first network carrier aggregation capability supported by the UE.

[0140] In some possible implementations, at least one frequency band of the first network to be released is determined to be: a frequency band belonging to a frequency band combination in the first network carrier aggregation capability, and not a frequency band belonging to a frequency band combination in the dual-link carrier aggregation capability.

[0141] In one example, the dual-link carrier aggregation capability of the UE includes two capabilities: B1+B3+N78 and B1+B7+N78, where B1, B3, and B7 are frequency bands in the 4G network, and N78 is a frequency band in the 5G network. When the UE performs initial registration in the LTE network, the configured LTE carrier aggregation capability is B1+B3+B7. When the UE supports B1+B3+B7+N78, the gNB determines that the addition can be completed and returns a successful addition message. However, since the dual-link carrier aggregation capability of the UE cannot support B1+B3+B7+N78, it is determined that the secondary base station cannot be added directly.

[0142] The determined frequency band of the first network to be released is B3 or B7. When the indication information indicates to release B3, the UE releases B3 in the first network carrier aggregation capability, so that the first network carrier aggregation capability of the UE is B1+B7. When the indication information indicates to release B7, the UE releases B3 in the first network carrier aggregation capability, so that the first network carrier aggregation capability of the UE is B1+B3.

[0143] S602-2-2: Send indication information to the UE, where the indication information indicates releasing the frequency band of the at least one first network to be released.

[0144] S602-2-3, send a request message to the second base station, the request message is used to request to add a secondary base station, the request message includes the main cell group MCG configuration information, the main cell group MCG configuration information includes the first network carrier aggregation frequency band combination corresponding to the UE after the release is executed.

[0145] Among them, S602-2-2 and S602-2-3 can be executed simultaneously, or the order is not limited.

[0146] S602-2-4, receiving a message sent by the second base station to indicate that the secondary base station is added successfully, and sending a radio link control reconfiguration message to the UE, wherein the radio link control reconfiguration message includes secondary cell group SCG configuration information.

[0147] In an embodiment of the present disclosure, a method for implementing dual links is provided, wherein the dual links are links with a first network and a second network. The first base station belongs to the first network, and the second base station belongs to the first network. After the UE accesses the first network, the base station of the second network is added as a secondary base station.

[0148] The embodiments of the present disclosure are applicable to but not limited to eutra-nr dual connection (ENDC), wherein the first base station is an eNB and the first network is an LTE network; the second base station is a gNB and the second network is a 5G network.

[0149] Figure 7 is a flowchart showing a method of implementing dual link according to an exemplary embodiment, which is executed by a user equipment, such as Figure 7 As shown, the method includes steps S701-S707: This method includes:

[0150] S701, sending UE capability information to a first base station, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority for implementing a dual link that is higher than a priority for implementing carrier aggregation in a first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which a second base station belongs;

[0151] In some possible implementations, the sending UE capability information to the first base station includes:

[0152] Sending a value UE-MRDC-Capability to the first base station, where the value UE-MRDC-Capability includes a bit used to indicate whether the first capability is supported.

[0153] S702: Execute a process of adding a secondary base station according to the UE capability information.

[0154] In some possible implementations, the process of performing a process of adding a secondary base station according to the UE capability information includes:

[0155] In response to the UE capability information indicating support for the first capability, receiving indication information sent by the first base station, where the indication information indicates release of at least one frequency band of the first network to be released;

[0156] The frequency band indicated by the indication information is released in the first network carrier aggregation capability.

[0157] The at least one frequency band of the first network to be released is determined according to a frequency band combination in a dual-link carrier aggregation capability supported by the UE and a frequency band combination in a first network carrier aggregation capability supported by the UE.

[0158] For example, the at least one frequency band of the first network to be released is a frequency band belonging to a frequency band combination in the carrier aggregation capability of the first network, and does not belong to a frequency band combination in the dual-link carrier aggregation capability.

[0159] In some possible implementations, the process of performing the process of adding a secondary base station according to the UE capability information includes: receiving a radio link control reconfiguration message sent by the first base station, wherein the radio link control reconfiguration message includes secondary cell group SCG configuration information.

[0160] Based on the same concept as the above method embodiment, the embodiment of the present disclosure also provides a communication device, which can have the function of the first base station in the above method embodiment, and is used to execute the steps performed by the first base station provided in the above embodiment. The function can be implemented by hardware, or by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0161] In one possible implementation, Figure 8 The communication device 800 shown can be used as the first base station involved in the above method embodiment, and execute the steps performed by the first base station in the above method embodiment.

[0162] The communication device 800 includes a transceiver module 801 and a processing module 802 .

[0163] The transceiver module 801 is configured to receive UE capability information sent by a user equipment UE, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority for implementing a dual link that is higher than a priority for implementing carrier aggregation in a first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs;

[0164] The processing module 802 is configured to execute a process of adding a secondary base station according to the UE capability information.

[0165] In some possible implementations, the transceiver module 801 is further configured to receive valueUE-MRDC-Capability sent by the UE, where the value UE-MRDC-Capability includes a bit for indicating whether the first capability is supported.

[0166] In some possible implementations, the transceiver module 801 is further configured to receive a message sent by the second base station to indicate a failure in adding the secondary base station, where the message includes a failure cause, where the failure cause is that the UE does not have the ability to directly add the secondary base station;

[0167] The processing module 802 is configured to determine whether the UE supports the first capability, and execute a processing flow of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE.

[0168] In some possible implementations, the processing module 802 is further configured to determine, according to the frequency band combination in the dual-link carrier aggregation capability supported by the UE and the frequency band combination in the first network carrier aggregation capability supported by the UE, a frequency band of at least one first network to be released in the first network carrier aggregation capability;

[0169] The transceiver module 801 is further configured to send indication information to the UE, where the indication information indicates to release the frequency band of the at least one first network to be released.

[0170] In some possible implementations, the processing module 802 is further configured to determine that at least one frequency band of the first network to be released is: a frequency band belonging to a frequency band combination in the first network carrier aggregation capability, and a frequency band that does not belong to a frequency band combination in the dual-link carrier aggregation capability.

[0171] In some possible implementations, the transceiver module 801 is also configured to send a request message to the second base station, the request message is used to request the addition of a secondary base station, the request message includes the main cell group MCG configuration information, and the main cell group MCG configuration information includes a first network carrier aggregation frequency band combination corresponding to the UE after the release is executed.

[0172] In some possible implementations, the transceiver module 801 is further configured to receive a message sent by the second base station to indicate that the secondary base station is added successfully, and send a radio link control reconfiguration message to the UE, where the radio link control reconfiguration message includes secondary cell group SCG configuration information.

[0173] When the communication device is a first base station, its structure may also be as follows: Fig. 9 As shown. The structure of the communication device is described by taking the network device 101 as a base station as an example. Fig. 9 As shown, the device 900 includes a memory 901, a processor 902, a transceiver component 903, and a power supply component 906. The memory 901 is coupled to the processor 902, and can be used to store the programs and data necessary for the communication device 900 to implement various functions. The processor 902 is configured to support the communication device 900 to perform the corresponding functions in the above method, and this function can be implemented by calling the program stored in the memory 901. The transceiver component 903 can be a wireless transceiver, which can be used to support the communication device 900 to receive signaling and / or data through a wireless air interface, and send signaling and / or data. The transceiver component 903 can also be called a transceiver unit or a communication unit. The transceiver component 903 may include a radio frequency component 904 and one or more antennas 905, wherein the radio frequency component 904 may be a remote radio unit (RRU), which can be specifically used for the transmission of radio frequency signals and the conversion of radio frequency signals and baseband signals, and the one or more antennas 905 can be specifically used for the radiation and reception of radio frequency signals.

[0174] When the communication device 900 needs to send data, the processor 902 can perform baseband processing on the data to be sent, and then output the baseband signal to the RF unit. The RF unit performs RF processing on the baseband signal and then sends the RF signal in the form of electromagnetic waves through the antenna. When data is sent to the communication device 900, the RF unit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 902. The processor 902 converts the baseband signal into data and processes the data.

[0175] Based on the same concept as the above method embodiment, the embodiment of the present disclosure also provides a communication device, which may have the function of the user equipment in the above method embodiment, and is used to execute the steps performed by the user equipment provided in the above embodiment. The function can be implemented by hardware, or by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0176] In one possible implementation, Fig.10 The communication device 1000 shown can be used as the user equipment involved in the above method embodiment, and execute the steps performed by the user equipment in the above method embodiment.

[0177] The communication device 1000 includes a transceiver module 1001 and a processing module 1002 .

[0178] The transceiver module 1001 is configured to send UE capability information to the first base station, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority for implementing a dual link that is higher than a priority for implementing carrier aggregation in the first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs;

[0179] The processing module 1002 is configured to execute a process of adding a secondary base station according to the UE capability information.

[0180] In a possible implementation manner, the transceiver module 1001 is configured to send a value UE-MRDC-Capability to the first base station, where the value UE-MRDC-Capability includes a bit for indicating whether the first capability is supported.

[0181] In a possible implementation manner, the transceiver module 1001 is further configured to, in response to the UE capability information indicating support for the first capability, receive indication information sent by the first base station, where the indication information indicates release of at least one frequency band of the first network to be released;

[0182] The processing module 1002 is further configured to release the frequency band indicated by the indication information in the first network carrier aggregation capability.

[0183] In a possible implementation manner, the frequency band of the at least one first network to be released is determined according to a frequency band combination in a dual-link carrier aggregation capability supported by the UE and a frequency band combination in a first network carrier aggregation capability supported by the UE.

[0184] In a possible implementation manner, the at least one frequency band of the first network to be released is: a frequency band belonging to a frequency band combination in the carrier aggregation capability of the first network, and does not belong to a frequency band combination in the dual-link carrier aggregation capability.

[0185] In a possible implementation, the transceiver module 1001 is further configured to receive a radio link control reconfiguration message sent by the first base station, where the radio link control reconfiguration message includes secondary cell group SCG configuration information.

[0186] When the communication device is a user equipment, its structure may also be as follows Fig.11 shown.

[0187] Fig.11 1 is a block diagram of a device 1100 for implementing dual links according to an exemplary embodiment. For example, the device 1100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0188] Reference Fig.11 , the device 1100 may include one or more of the following components: a processing component 1102 , a memory 1104 , a power component 1106 , a multimedia component 1108 , an audio component 1110 , an input / output (I / O) interface 1112 , a sensor component 1114 , and a communication component 1116 .

[0189] The processing component 1102 generally controls the overall operation of the device 1100, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1102 may include one or more processors 1120 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 1102 may include one or more modules to facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.

[0190] The memory 1104 is configured to store various types of data to support operations on the device 1100. Examples of such data include instructions for any application or method operating on the device 1100, contact data, phone book data, messages, pictures, videos, etc. The memory 1104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0191] The power component 1106 provides power to the various components of the device 1100. The power component 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 1100.

[0192] The multimedia component 1108 includes a screen that provides an output interface between the device 1100 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1108 includes a front camera and / or a rear camera. When the device 1100 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0193] The audio component 1110 is configured to output and / or input audio signals. For example, the audio component 1110 includes a microphone (MIC), and when the device 1100 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1104 or sent via the communication component 1116. In some embodiments, the audio component 1110 also includes a speaker for outputting audio signals.

[0194] I / O interface 1112 provides an interface between processing component 1102 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0195] The sensor assembly 1114 includes one or more sensors for providing various aspects of the status assessment of the device 1100. For example, the sensor assembly 1114 can detect the open / closed state of the device 1100, the relative positioning of components, such as the display and keypad of the device 1100, the sensor assembly 1114 can also detect the position change of the device 1100 or a component of the device 1100, the presence or absence of user contact with the device 1100, the orientation or acceleration / deceleration of the device 1100, and the temperature change of the device 1100. The sensor assembly 1114 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1114 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1114 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0196] The communication component 1116 is configured to facilitate wired or wireless communication between the device 1100 and other devices. The device 1100 can access a wireless network based on a communication standard, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 1116 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0197] In an exemplary embodiment, the device 1100 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above methods.

[0198] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1104 including instructions, and the instructions can be executed by the processor 1120 of the device 1100 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0199] Those skilled in the art will readily appreciate other implementations of the disclosed embodiments after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosed embodiments, which follow the general principles of the disclosed embodiments and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the disclosed embodiments are indicated by the following claims.

[0200] It should be understood that the embodiments of the present disclosure are not limited to the precise structures described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

Claims

1. A method for implementing dual link, performed by a first base station, the method include: receiving UE capability information sent by a user equipment UE, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority of implementing a dual link that is higher than a priority of implementing carrier aggregation in a first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs; A processing flow for adding a secondary base station is executed according to the UE capability information, so as to instruct the user equipment UE to release at least one frequency band of the first network to be released when the user equipment UE supports the first capability and does not have the capability of directly adding a secondary base station, so that the current first network carrier aggregation capability of the user equipment UE meets the requirements of the configured dual-link carrier aggregation capability.

2. The method according to claim 1, in, The receiving UE capability information sent by the user equipment UE includes: Receive a value UE-MRDC-Capability sent by the UE, where the value UE-MRDC-Capability includes a bit used to indicate whether the first capability is supported.

3. The method according to claim 1, in, The process of performing the process of adding a secondary base station according to the UE capability information includes: receiving a message sent by the second base station and indicating a failure in adding the secondary base station, where the message includes a failure reason, where the failure reason is that the UE does not have a capability of directly adding the secondary base station; It is determined that the UE supports the first capability, and a processing flow of adding a secondary base station is executed according to the dual-link carrier aggregation capability supported by the UE.

4. The method according to claim 3, in, The process of performing the process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE includes: Determine, according to the frequency band combination in the dual link carrier aggregation capability supported by the UE and the frequency band combination in the first network carrier aggregation capability supported by the UE, at least one frequency band of the first network to be released in the first network carrier aggregation capability; Sending indication information to the UE, where the indication information indicates releasing the frequency band of the at least one first network to be released.

5. The method according to claim 4, in, The determining, according to a frequency band combination in a dual-link carrier aggregation capability supported by the UE and a frequency band combination in a first network carrier aggregation capability supported by the UE, at least one frequency band of the first network to be released includes: It is determined that at least one frequency band of the first network to be released is a frequency band that belongs to a frequency band combination in the carrier aggregation capability of the first network and does not belong to a frequency band combination in the dual-link carrier aggregation capability.

6. The method according to claim 4, in, The process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE further includes: A request message is sent to the second base station, where the request message is used to request adding a secondary base station, where the request message includes main cell group MCG configuration information, where the main cell group MCG configuration information includes a first network carrier aggregation frequency band combination corresponding to the UE after release.

7. The method according to claim 6, in, The process of adding a secondary base station according to the dual-link carrier aggregation capability supported by the UE further includes: A message sent by the second base station to indicate that the secondary base station is added successfully is received, and a radio link control reconfiguration message is sent to the UE, where the radio link control reconfiguration message includes secondary cell group SCG configuration information.

8. A method for implementing dual link, performed by a user equipment UE, the method include: Sending UE capability information to the first base station, where the UE capability information is used to indicate whether a first capability is supported, where the first capability corresponds to a priority for implementing a dual link that is higher than a priority for implementing carrier aggregation in the first network, where the dual link corresponds to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs; The processing flow of adding a secondary base station is executed according to the UE capability information to release at least one frequency band of the first network to be released when the first capability is supported and there is no ability to directly add a secondary base station, so that the current first network carrier aggregation capability meets the requirements of the configured dual-link carrier aggregation capability.

9. The method according to claim 8, in, The sending UE capability information to the first base station includes: Sending a value UE-MRDC-Capability to the first base station, where the value UE-MRDC-Capability includes a bit used to indicate whether the first capability is supported.

10. The method according to claim 8, in, The process of performing the process of adding a secondary base station according to the UE capability information includes: In response to the UE capability information indicating support for the first capability, receiving indication information sent by the first base station, where the indication information indicates release of at least one frequency band of the first network to be released; The frequency band indicated by the indication information is released in the first network carrier aggregation capability.

11. The method according to claim 10, in, The at least one frequency band of the first network to be released is determined according to a frequency band combination in a dual-link carrier aggregation capability supported by the UE and a frequency band combination in a first network carrier aggregation capability supported by the UE.

12. The method according to claim 11, in, The at least one frequency band of the first network to be released is a frequency band that belongs to a frequency band combination in the carrier aggregation capability of the first network and does not belong to a frequency band combination in the dual-link carrier aggregation capability.

13. The method according to claim 10, in, The method further comprises: A radio link control reconfiguration message is received from the first base station, where the radio link control reconfiguration message includes secondary cell group (SCG) configuration information.

14. A device for implementing dual link, configured in a first base station, include: a transceiver module, configured to receive UE capability information sent by a user equipment UE, the UE capability information being used to indicate whether a first capability is supported, the first capability corresponding to a priority of implementing a dual link being higher than a priority of implementing carrier aggregation in a first network, the dual link corresponding to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs; The processing module is configured to execute a processing flow of adding a secondary base station according to the first capability information, so as to instruct the user equipment UE to release at least one frequency band of the first network to be released when the user equipment UE supports the first capability and does not have the ability to directly add a secondary base station, so that the current first network carrier aggregation capability of the user equipment UE meets the requirements of the configured dual-link carrier aggregation capability.

15. A device for implementing dual link, configured in a user equipment, include: a transceiver module, configured to send UE capability information to the first base station, the UE capability information being used to indicate whether a first capability is supported, the first capability corresponding to a priority of implementing a dual link being higher than a priority of implementing carrier aggregation in the first network, the dual link corresponding to a link with a first network to which the first base station belongs and a link with a second network to which the second base station belongs; The processing module executes the processing flow of adding the secondary base station according to the UE capability information, so as to release at least one frequency band of the first network to be released when the user equipment UE supports the first capability and does not have the ability to directly add the secondary base station, so that the current first network carrier aggregation capability of the user equipment UE meets the requirements of the configured dual-link carrier aggregation capability.

16. A communication device comprising a processor and a memory, in, The memory is used to store computer programs; The processor is configured to execute the computer program to implement the method according to any one of claims 1 to 7.

17. A communication device comprising a processor and a memory, in, The memory is used to store computer programs; The processor is configured to execute the computer program to implement the method according to any one of claims 8 to 13.

18. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are called and executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 7.

19. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are called and executed on a computer, the computer is caused to execute the method according to any one of claims 8 to 13.

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