Report recording method and apparatus, and communication system

Abstract

Provided in the embodiments of the present application are a report recording method and apparatus, and a communication system. The apparatus comprises: a receiver, which receives first configuration information for indicating the configuration of a master-secondary cell change, wherein the master-secondary cell change comprises an ordinary master-secondary cell change or a condition-triggered master-secondary cell change; and a processor, which determines the recording of a first report on the basis of the type of the master-secondary cell change, and / or on the basis of related information of a target master-secondary cell, and / or on the basis of the type of a signaling radio bearer (SRB) on which the first configuration information is sent.

Description

Report recording method, device and communication system Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] In dual-connectivity (DC) or multi-connectivity (MC) communications, a terminal device can simultaneously communicate with at least two access network devices, for example, with a primary base station and one or more secondary base stations, where the primary base station manages the master cell group (MCG) and the secondary base station manages the secondary cell group (SCG). The terminal device can obtain the communication services of the primary base station through the cells in the MCG, and can obtain the communication services of the secondary base station through the cells in the SCG. In DC or MC, scenarios involving the addition of primary and secondary cells or changes to secondary cells of terminal devices are frequently involved.

[0003] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

[0004] Summary of the Invention

[0005] The terminal device can record potential failures during the addition or change of primary and secondary cells. However, there is currently no relevant technology to solve the above problems, such as how the terminal device determines whether to record potential failures and what information to record.

[0006] In response to at least one of the above problems or other similar problems, embodiments of the present application provide a report recording method, device, and communication system.

[0007] According to one aspect of an embodiment of the present application, a report recording device is provided, configured in a terminal device (UE), wherein the device includes:

[0008] a receiver configured to receive first configuration information indicating a change in configuration of a primary or secondary cell; the primary or secondary cell change including a normal primary or secondary cell change or a condition-triggered primary or secondary cell change;

[0009] The processor determines to record the first report according to the type of the primary and secondary cell change, and / or according to relevant information of the target primary and secondary cell, and / or according to the signaling radio bearer SRB type for sending the first configuration information.

[0010] According to another aspect of an embodiment of the present application, a report recording method is provided, wherein the method includes:

[0011] The terminal device receives first configuration information for indicating a change in configuration of a primary or secondary cell; the primary or secondary cell change includes a normal primary or secondary cell change or a condition-triggered primary or secondary cell change;

[0012] The terminal device determines to record the first report according to the type of change of the primary and secondary cells, and / or according to the relevant information of the target primary and secondary cells, and / or according to the signaling radio bearer SRB type for sending the first configuration information.

[0013] According to another aspect of an embodiment of the present application, a communication system is provided, including a terminal device, wherein the terminal device includes the report recording apparatus described in the previous aspect.

[0014] One of the beneficial effects of the embodiments of the present application is that: according to the embodiments of the present application, the terminal device can determine the network device that triggers the mobility of the primary and secondary cells, thereby determining whether to record potential failure problems in the mobility process of the primary and secondary cells, and the content of the record, avoiding the recording of erroneous or redundant content, ensuring robustness, and reducing unnecessary signaling overhead.

[0015] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0016] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0017] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0019] FIG1 is a schematic diagram of a primary cell group and a secondary cell group;

[0020] FIG2 is a schematic diagram of a report recording method according to an embodiment of the present application;

[0021] FIG3 is a schematic diagram of a report sending method according to an embodiment of the present application;

[0022] FIG4 is a schematic diagram of a report receiving method according to an embodiment of the present application;

[0023] FIG5 is a schematic diagram of a report recording device according to an embodiment of the present application;

[0024] FIG6 is a schematic diagram of a communication system according to an embodiment of the present application;

[0025] FIG7 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0026] FIG8 is a schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0028] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0029] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0030] In the embodiments of the present application, a scenario involving network devices and / or terminal devices is taken as an example.

[0031] In the above scenario, the network device may include at least one of a core network device, a third-party application device, an operation administration and maintenance (OAM), and an access network device.

[0032] The core network device may refer to a device in the core network (CN) that provides service support for the terminal device. As some examples, the core network device may be at least one of the following: a mobility and management entity (MME), an access and mobility management function (AMF) entity, a session management function (SMF) entity, a user plane function (UPF) entity, a location management function (LMF) entity, and the like, which are not listed here one by one. Among them, the AMF entity may be responsible for the access management and mobility management of the terminal, the SMF entity may be responsible for session management, such as the establishment of a user session, and the UPF entity may be a functional entity of the user plane, mainly responsible for connecting to the external network. The LMF entity may manage the overall coordination and scheduling of resources required for the location of the terminal device registered with the core network device or accessing the core network device. It should be noted that in the embodiment of the present application, the entity may also be referred to as a network element or a functional entity, such as the AMF entity may also be referred to as an AMF network element or an AMF functional entity, and so on.

[0033] The third-party application device can be an OTT service (over the top server) or other third-party device.

[0034] OAM is a network device that performs operations, management, and maintenance on the network according to the actual needs of the operator's network operations.

[0035] The access network device is an access device that the terminal device uses to access the communication system wirelessly. The access network device can be a base station (BS), a node, an evolved NodeB (eNodeB), a transmission reception point (TRP), a base station (next generation NodeB, gNB) in the fifth generation (5G) mobile communication system, a base station in the sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The access network device can also be a module or unit that completes part of the functions of the base station. For example, it can be at least one of the following modules or units: a centralized unit (CU), a distributed unit (DU), a centralized unit control plane (CU control plane, CU-CP), a centralized unit user plane (CU user plane, CU-CP), an integrated access backhaul (IAB) or other modules or units. The embodiments of the present application do not limit the specific technology and / or specific device form adopted by the access network device. The access network equipment can be deployed on land, including indoors / outdoors, and can be handheld or vehicle-mounted; it can also be deployed on the water, on an airplane, on a balloon or on a satellite; the access network equipment can be deployed in a fixed location or on a mobile carrier, and the embodiments of the present application do not limit this.

[0036] In the above scenarios, a terminal device can be a device with wireless transceiver capabilities that can send signals to and / or receive signals from an access network device. A terminal device can also be referred to as a terminal, mobile station, or mobile terminal. A terminal device can be a mobile phone, tablet, or other device with wireless intelligent transceiver capabilities. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), the Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, and various smart scenarios.

[0037] In the above scenarios, access network devices and terminal devices, and terminal devices and terminal devices can communicate via licensed spectrum, unlicensed spectrum, or both. The embodiments of this application do not limit the spectrum resources used for wireless communications.

[0038] For ease of description, the following description is made by taking a base station as an example of a network device. In the following description, "if ...", "under ...", "if ..." and "when ..." can be used interchangeably without causing confusion.

[0039] The embodiments of the present application are mainly described for the multi-link scenario. For ease of understanding, the following takes the multi-link MC including two connections as an example, that is, the DC scenario as an example. It should be noted that the multi-link in the embodiments of the present application can also be called multi-connection, and the dual link can also be called dual connection.

[0040] In a dual-connectivity scenario, as shown in Figure 1, the terminal device is configured with a primary network device and a secondary network device. The group of serving cells associated with the primary network device is called an MCG, and the group of serving cells associated with the secondary network device is called a secondary cell group (SCG). The primary cell group can include a primary cell (PCell), or a primary cell and at least one secondary cell (SCell). The secondary cell group can include a primary secondary cell (PSCell), or a primary secondary cell and at least one secondary cell. The primary cell and the primary secondary cell are also referred to as special cells (spCells).

[0041] In the embodiments of the present application, the primary base station may also be referred to as a master node (MN) or a primary network device. The secondary base station may also be referred to as a secondary node (SN) or a secondary network device. A control plane connection may be established between the primary base station and the core network, and the primary base station and the secondary base station may each establish a data plane connection with the core network.

[0042] The following involves SN-related mobility scenarios (which can be referred to as secondary base station mobility or primary and secondary cell mobility or secondary cell group mobility). The description is based on the "primary and secondary cell" as an example. The description related to the primary and secondary cells can be extended to the description of the secondary cell group or the secondary network device, which is not limited in this embodiment of the present application.

[0043] The scenarios of primary and secondary cell mobility may include at least one of the following:

[0044] Adding primary and secondary cells: In a wireless communication system, the terminal device is only configured with a primary cell or a primary cell group, and the primary cell or the primary cell group belongs to the primary network device. The primary network device adds primary and secondary cells for the terminal device. Possible ways of adding are: the primary network device configures the terminal device to add a target primary and secondary cell, and the terminal device immediately executes the target primary and secondary cell adding process, hereinafter referred to as the ordinary (or traditional legacy) primary and secondary cell adding mechanism; or, the primary network device configures a candidate primary and secondary cell for the terminal device, and configures the corresponding execution conditions. When the execution conditions corresponding to the candidate primary and secondary cells are met, the terminal device adds the candidate primary and secondary cells that meet the execution conditions as the target primary and secondary cells, that is, the terminal device executes the target primary and secondary cell adding process, hereinafter referred to as the condition-triggered primary and secondary cell adding mechanism;

[0045] Change of primary and secondary cells: It can also be called change of primary and secondary cells. In a wireless communication system, a terminal device can be configured with dual connections, and the terminal device can establish connections with the primary network device and the secondary network device respectively. The primary network device can be called the source primary network device, and the secondary network device can be called the source secondary network device. When the primary network device of the terminal device remains unchanged, the secondary network device or the primary and secondary cells or the secondary cell group of the terminal device can be changed; the above changes can be triggered by the primary network device or the source secondary network device. The change of primary and secondary cells can be across the secondary network device or within the source and secondary network device. Taking the network device as a base station as an example, the primary network device can be an MN, and the secondary network device can be an SN or a source SN. The change of the primary and secondary cells across the secondary network devices can be called an inter-SN primary and secondary cell change. In addition, the new secondary network device can be called a target SN; the change of the primary and secondary cells within the source and secondary network devices can be called an intra-SN primary and secondary cell change. As an example, the target SN and the source SN are the same in this scenario. Similarly, the above-mentioned change method can be a normal primary and secondary cell change mechanism, that is, the network device configures the target primary and secondary cells of the terminal device, and the terminal device immediately executes the target primary and secondary cell change process, or it can be a condition-triggered primary and secondary cell change mechanism, that is, the network device configures candidate primary and secondary cells for the terminal device and configures corresponding execution conditions. When the execution conditions corresponding to the candidate primary and secondary cells are met, the terminal device selects the target primary and secondary cells from the candidate primary and secondary cells that meet the execution conditions and executes the target primary and secondary cell change process. In the condition-triggered change mechanism, the primary network device and the source and secondary network device can configure the candidate primary and secondary cells and execution conditions separately or simultaneously. However, in the normal primary and secondary cell mobility scenario, configuration can only be performed by the primary network device or the secondary network device. It can be understood that in the embodiment of the present application, when primary and secondary cells / SNs / secondary network devices appear, if they are not explicitly described as "target" primary and secondary cells / SNs / secondary network devices, they are all understood as "source" primary and secondary cells / SNs / secondary network devices.

[0046] In summary, possible scenarios for primary and secondary cell mobility include:

[0047] 1) Adding primary and secondary cells - MN triggered / configured

[0048] 2) Change of primary and secondary cells of ordinary intra-SN - SN triggered / configured

[0049] 3) Common inter-SN primary and secondary cell change - SN triggered / configured

[0050] 4) Common primary and secondary cell changes - MN triggered / configured

[0051] 5) Condition-triggered intra-SN primary and secondary cell change - SN triggered / configured

[0052] 6) Condition-triggered inter-SN primary and secondary cell changes - SN triggered / configured

[0053] 7) Condition-triggered primary and secondary cell changes - MN triggered / configured

[0054] 3GPP R18 introduced the successful PSCell report (SPR) to identify potential failures in the process of secondary base station mobility or primary and secondary cell mobility or secondary cell group mobility. In order to enable the terminal device to record the SPR, the network device can configure the triggering conditions of the SPR for the terminal device. It can be understood that if the network device triggers / configures the primary and secondary cell mobility, the network device can also configure the triggering conditions of the SPR for the terminal device. For example, in the primary and secondary cell change scenario, correspondingly, the primary network device and the source and secondary network device can configure the corresponding SPR triggering conditions for the terminal device.

[0055] The inventors have discovered that in the primary and secondary cell change scenario, both the primary network device and the secondary network device can configure the primary and secondary cell change for the terminal device. Correspondingly, both the primary network device and the secondary network device can configure the corresponding SPR triggering conditions for the terminal device. Therefore, the terminal device needs to determine which network device triggers and / or configures the primary and secondary cell change process and / or the triggering conditions of the SPR it uses. If the terminal device always records the SPR according to the configuration of both the primary network device and the source secondary network device when recording the SPR, unnecessary signaling overhead will be incurred. Alternatively, if the primary and secondary cell change process of the terminal device is triggered / configured by the primary network device (or the source secondary network device), but the terminal device determines the SPR recording according to the triggering conditions of the SPR configured by the source secondary network device (or the primary network device), and / or records the SPR according to the configuration of the source secondary network device (or the primary network device), the primary network device may not be able to optimize the mobility parameters of the primary and secondary cell change triggered / configured by the corresponding primary network device according to the SPR. To address at least one of the above problems, the embodiments of the present application propose a report recording method, device, and communication system.

[0056] The embodiments of the present application are described below with reference to the accompanying drawings and specific implementation methods.

[0057] Embodiments of the first aspect

[0058] An embodiment of the present application provides a report recording method, which is described from the perspective of a terminal device.

[0059] FIG2 is a schematic diagram of a report recording method according to an embodiment of the present application. As shown in FIG2 , the method includes:

[0060] 201. A terminal device receives first configuration information indicating a change in configuration of a primary or secondary cell; the primary or secondary cell change includes a normal primary or secondary cell change or a condition-triggered primary or secondary cell change.

[0061] 202. The terminal device determines to record the first report according to the type of change of the primary and secondary cells, and / or according to the relevant information of the target primary and secondary cells, and / or according to the signaling radio bearer SRB type for sending the first configuration information.

[0062] It is worth noting that FIG2 above only schematically illustrates an embodiment of the present application, and the present application is not limited thereto. For example, other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the description of FIG2 above.

[0063] In some embodiments, the implementation of a normal primary and secondary cell change or a condition-triggered primary and secondary cell change is as described above and will not be repeated here. That is, the first configuration information can be a normal primary and secondary cell change configuration, including target primary and secondary cell information. Alternatively, the first configuration information can be a condition-triggered primary and secondary cell change configuration, where the condition-triggered primary and secondary cell change configuration includes candidate primary and secondary cell information and execution condition information.

[0064] In some embodiments, the first configuration information is used by the terminal device to determine the target primary and secondary cells (after the change). If the first configuration information is a normal primary and secondary cell change configuration, the normal primary and secondary cell change configuration includes the information of the target primary and secondary cells. The terminal device can directly determine the target primary and secondary cells based on the information of the target primary and secondary cells, and perform the corresponding change process. If the first configuration information is a condition-triggered primary and secondary cell change configuration, the condition-triggered primary and secondary cell change configuration includes candidate primary and secondary cell information and execution condition information. For example, the condition-triggered primary and secondary cell change configuration may include at least one candidate primary and secondary cell information and execution condition information. The terminal device determines whether the candidate primary and secondary cells in the candidate primary and secondary cell list meet the execution conditions in the execution condition information, selects the target primary and secondary cell from the candidate primary and secondary cells that meet the conditions, and performs the corresponding change process. The above-mentioned change process can refer to the relevant technology and will not be repeated here.

[0065] In some embodiments, the primary / secondary cell change configuration in the first configuration information is configured by the (source) primary network device (primary cell), or by the (source) secondary network device (primary / secondary cell), or by the (source) primary network device and the (source) secondary network device. In other words, the primary / secondary cell change is triggered by the (source) primary network device, or by the (source) secondary network device, or by the (source) primary network device and the (source) secondary network device.

[0066] In some embodiments, optionally, the first configuration information may further include maximum operating duration information of at least one timer, where the at least one timer includes T304, T310, and / or T312. For ease of understanding, several timers involved in this application are described below:

[0067] Timer T304 (hereinafter referred to as T304):

[0068] The running time of T304 indicates the time from when the terminal device performs the addition or change of the target primary and secondary cells (including common and condition-triggered scenarios) to when the UE successfully completes the random access process between the target primary and secondary cells.

[0069] Timer T310 (hereinafter referred to as T310):

[0070] The running time of T310 indicates the duration of time that the UE detects that there are physical layer problems (physical layer problems) between the UE and the network device (e.g., the source auxiliary network device or the main network device) (the problem is usually that the downlink desynchronization indications received continuously exceed a certain threshold). After starting T310, if the radio link is restored during the running of T310, the timer T310 is stopped. If the running time of T310 is greater than or equal to a certain threshold, the UE determines that a radio link failure has occurred between the UE and the network device (e.g., the source auxiliary network device or the main network device).

[0071] Timer T312 (hereinafter referred to as T312):

[0072] The maximum operating time information of T312 can be at the frequency level or the measurement identifier level. When the network device configures the T312 start indication information and the maximum operating time information of T312 for the frequency or the measurement identifier, if the terminal device sends the measurement report corresponding to the frequency or the measurement identifier, the terminal device starts the corresponding T312. Furthermore, the terminal device can determine whether to start T312 based on whether T310 is running. For example, if T310 is running, the frequency or the frequency corresponding to the measurement identifier is configured with T312 start indication information and the maximum operating time information of T312, if the terminal device sends the measurement report corresponding to the frequency or the measurement identifier, the terminal device starts the corresponding T312. In the primary and secondary cell mobility scenario, the terminal device starts the T312 corresponding to the frequency or measurement identifier of the target primary and secondary cell.

[0073] The maximum running time information of the above at least one timer can also be configured by other high-level parameters, and the embodiments of the present application are not limited to this.

[0074] In some embodiments, the first configuration information also includes a record trigger configuration for the first report, and the record trigger configuration information is used by the terminal device to determine whether to record the first report. Among them, the first report can be the aforementioned primary and secondary cell success report (SPR), but the embodiment of the present application is not limited to this name. The record trigger configuration is used for the terminal device to determine whether a potential failure has occurred in the process of the primary and secondary cell mobility, or the terminal device needs to determine whether the first report needs to be recorded based on the record trigger configuration. The following describes how to determine whether the first report needs to be recorded based on the record trigger configuration. Recording the first report indicates that the terminal device stores information related to the mobility of the primary and secondary cells.

[0075] In some embodiments, the recording trigger configuration may include a trigger threshold of at least one timer, and the at least one timer includes T304, T310 and / or T312. The terminal device determines whether it is necessary to record the first report based on the recording trigger configuration: if the terminal device determines that the information related to the running length of the timer corresponding to the recording trigger configuration is greater than or equal to the trigger threshold corresponding to the timer, the terminal device determines to record the first report, otherwise the first report is not recorded. The above-mentioned trigger threshold can be absolute time length information or ratio information. As an implementation method, if the above-mentioned trigger threshold is ratio information, when the terminal device determines that the ratio between the running length of the timer and the maximum running length of the timer is greater than or equal to the trigger threshold corresponding to the timer, the terminal device determines to record the first report.

[0076] For example, if the ratio of the running time of T304 to the maximum running time of T304 is greater than or equal to the T304 trigger threshold, the UE records the first report. If the ratio of the running time of T310 (corresponding to the source primary and secondary cells) to the maximum running time of T310 is greater than or equal to the T310 trigger threshold, the UE records the first report. If the ratio of the running time of T312 (corresponding to the target primary and secondary cells) to the maximum running time of T312 is greater than or equal to the T312 trigger threshold, the UE records the first report.

[0077] In some embodiments, the recording trigger configuration is configured by the (source) primary network device, or by the (source) secondary network device, or by the (source) primary network device and the (source) secondary network device respectively. The recording trigger configuration and the primary and secondary cell change configuration are carried by the same or different signaling, and this embodiment is not limited to this.

[0078] As mentioned above, in the scenario where the primary and secondary cells are changed, both the primary network device and the secondary network device can configure the primary and secondary cell changes for the terminal device. Correspondingly, both the primary network device and the secondary network device can configure the corresponding record trigger configuration for the terminal device. That is to say, when the terminal device determines whether to record the first report, in order to avoid recording errors or to avoid increasing the signaling overhead caused by redundant records, the conditions that need to be considered should include distinguishing which network device triggered and / or configured the corresponding configuration, which is explained in detail below.

[0079] In some embodiments, a first indication information may be introduced, and the first indication information is used to indicate by which network device the first configuration information is configured (by which network device the primary and secondary cell change is triggered). If the first indication information is used to indicate that the first configuration information is configured by the secondary network device (the primary and secondary cell change is triggered by the secondary network device), the first configuration information may include the first indication information or may not include the first indication information, or the first indication information may be configured or not configured. When the first configuration information includes the first indication information (when the first indication information is configured), it indicates that the first configuration information (primary and secondary cell change configuration) is configured by the secondary network device; when the first configuration information does not include the first indication information (when the first indication information is not configured), it indicates that the first configuration information (primary and secondary cell change configuration) is configured by the primary network device. That is, the terminal device determines which network device triggers and / or configures the primary and secondary cell change configuration based on whether the first indication information is configured, and then determines whether to record the first report based on the record triggering configuration of the determined network device. The first indication information and the aforementioned primary and secondary cell change configuration may be carried by the same or different signaling, or the first indication information may be included in the primary and secondary cell change configuration, and the embodiments of the present application are not limited thereto.

[0080] As a possible implementation method (hereinafter referred to as implementation method one), taking the first indication information used to indicate that the first configuration information is configured by the (source) secondary network device (the primary and secondary cell change is triggered by the (source) secondary network device) as an example, the first indication information is only used to indicate that the ordinary primary and secondary cell change configuration is configured by the (source) primary and secondary cell or configured by the (source) secondary network device, including the scenario where the corresponding primary and secondary cell change configuration (first configuration information) is sent through SRB1 and SRB3. That is to say, only when the ordinary primary and secondary cell change configuration is sent, the first indication information can be configured (including being configured (when configured by the (source) primary and secondary cell or when configured by the (source) secondary network device) or not configured (when configured by the (source) primary cell or when configured by the (source) primary network device)), and under the condition-triggered primary and secondary cell change configuration, the first indication information will not be configured.

[0081] As a possible implementation method (hereinafter referred to as implementation method two), taking the first indication information used to indicate that the first configuration information is configured by the (source) secondary network device (the primary and secondary cell change is triggered by the (source) secondary network device) as an example, the first indication information is only used to indicate that the ordinary primary and secondary cell change configuration is configured by the (source) primary and secondary cell or configured by the (source) secondary network device, but only includes the scenario where the corresponding primary and secondary cell change configuration (first configuration information) is sent through SRB1. That is, only when the ordinary primary and secondary cell change configuration is sent through SRB1, the first indication information can be configured (including being configured (when configured by the (source) primary and secondary cell or when configured by the (source) secondary network device) or not configured (when configured by the (source) primary cell or when configured by the (source) primary network device)), and in other scenarios, the first indication information will not be configured. In other words, when the first configuration information is sent through SRB1, the first configuration information can also include the first indication information.

[0082] As a possible implementation method (hereinafter referred to as implementation method three), taking the first indication information used to indicate the relevant information of the target primary and secondary cells or the first configuration information is configured by the (source) secondary network device (the primary and secondary cell change is triggered by the (source) secondary network device) as an example, the first indication information is used to indicate that the normal and / or conditionally triggered primary and secondary cell change configuration is configured by the (source) primary and secondary cells or by the (source) secondary network device, including the scenario where the corresponding primary and secondary cell change configuration (first configuration information) is sent through SRB1 and SRB3. The first indication information can be configured (including being configured (when configured by the (source) primary and secondary cells or when configured by the (source) secondary network device) or not configured (when configured by the (source) primary cell or when configured by the (source) primary network device)).

[0083] In the above-mentioned embodiment 1, for ordinary primary and secondary cell changes (such as the aforementioned scenario 2) or scenario 3) or scenario 4), it is possible to determine which network device triggered and / or configured the primary and secondary cell change configuration based on the first indication information. For conditionally triggered primary and secondary cell changes (such as the aforementioned scenario 5) or scenario 6) or scenario 7), there is a problem in which the corresponding network device cannot be determined based on the first indication information.

[0084] Similarly, in the above-mentioned second embodiment, for ordinary changes in primary and secondary cells, there is also a problem that the corresponding network device cannot be determined based on the first indication information alone. For condition-triggered changes in primary and secondary cells (such as the aforementioned scenario 5) or scenario 6) or scenario 7), there is still a problem that the corresponding network device cannot be determined based on the first indication information.

[0085] Similarly, in the third embodiment above, the types of configuration changes of the primary and secondary cells are not distinguished. Therefore, there is also a problem that the corresponding network device cannot be determined based on only the first indication information.

[0086] Therefore, in addition to using the first indication information as a judgment condition, the embodiment of the present application also proposes to distinguish which network device triggers and / or configures the primary and secondary cell change configuration based on the type of primary and secondary cell change, and / or based on the relevant information of the target primary and secondary cell, and / or based on the signaling radio bearer SRB type that sends the first configuration information, and then determine whether to record the first report based on the record trigger configuration of the network device, and determine the content of the first report based on the relevant configuration of the network device. The following is a detailed description.

[0087] As some possible implementations, the first report can be determined to be recorded based on the type of primary and secondary cell change and the relevant information of the target primary and secondary cell, or based on the first indication information, the type of primary and secondary cell change and the relevant information of the target primary and secondary cell. For example, in the above-mentioned implementation modes one, two or three, if the type of primary and secondary cell change is a conditionally triggered primary and secondary cell change, when the terminal device determines that the relevant information of the target primary and secondary cell is configured by the first network device, it determines to record the first report based on the record trigger configuration of the first report configured by the first network device; further, the terminal device can also determine the content that needs to be recorded in the first report based on the relevant configuration of the first network device. The first network device is a (source) primary network device or a (source) secondary network device. Among them, the terminal device determines that the relevant information of the target primary and secondary cell is configured by the first network device, including: the target primary and secondary cell is configured by the first network device (for example, the target primary and secondary cell is one of the candidate primary and secondary cells in the primary and secondary cell change configuration configured by the first network device), or, the execution condition corresponding to the target primary and secondary cell is configured by the first network device (for example, the target primary and secondary cell is a cell that meets the execution condition in the primary and secondary cell change configuration configured by the first network device), or, the first indication information related to the target primary and secondary cell is configured, and the first indication information is used to indicate that the target primary and secondary cell and / or the execution condition corresponding to the target primary and secondary cell is configured by the first network device (for example, the target primary and secondary cell is one of the candidate primary and secondary cells in the primary and secondary cell change configuration configured by the first network device, and the first indication information related to the target primary and secondary cell is configured, and the first indication information is used to indicate that the target primary and secondary cell or the execution condition of the target primary and secondary cell is configured by the first network device).

[0088] For example, the main network device (MN) and the secondary network device (SN) respectively send condition-triggered primary and secondary cell change (CPC) configuration and record trigger configuration through SRB1, wherein the CPC configuration configured by MN to the UE includes: {PSCell1, execution condition 1}; the CPC configuration configured by SN to the UE includes {PSCell1, execution condition 2}, {PSCell2, execution condition 3}, or, the CPC configuration configured by SN to the UE includes {PSCell1, execution condition 2, first indication information}, {PSCell2, execution condition 3, first indication information} (at this time, the first indication information is used to indicate that the CPC configuration is configured by SN); the UE determines that the target primary and secondary cell is PSCell1; if the target primary and secondary cell PSCell1 meets execution condition 1, the UE believes that this CPC is configured by MN, and the UE determines whether to record the first report based on the record trigger configuration related to MN. If the target primary and secondary cell is PSCell2, the UE believes that this CPC is configured by the SN, or the UE believes that this CPC is configured by the SN based on the first indication information related to PSCell2. The UE determines whether to record the first report based on the SN-related record trigger configuration.

[0089] In this implementation, the terminal device can determine which network device configured the record trigger configuration based on the relevant information element information or sending method or second indication information in the record trigger configuration. For example, the name of the information element information of the record trigger configuration configured by the main network device is different from the name of the information element information of the record trigger configuration configured by the auxiliary network device. The terminal device can determine which network device configured the record trigger configuration based on the information element information (name) of the record trigger configuration (for example, it can be applied to scenarios 6) and 7) in implementation modes one and two); for another example, if the record trigger configuration is included in the same message as the primary and secondary cell change configuration and is sent, the terminal device can determine that the record trigger configuration information is configured by the network device that triggers / configures the primary and secondary cell change configuration (for example, it can be applied to scenarios 5), 6) and 7) in implementation modes one and two). ; It can be understood that the terminal device can determine the triggering / configuring network device of the primary and secondary cell change configuration based on the information element information or sending method of the execution condition in the condition-triggered primary and secondary cell change configuration; for example, the second indication information can be used to indicate which network device configured the record trigger configuration (for example, applicable to scenarios 6) and 7) in implementation modes one and two); It can be understood that the second indication information and the first indication information are the same information element (for example, applicable to scenarios 5), 6) and 7) in implementation mode three), or they can be different information elements. The implementation mode of the second indication information is similar to that of the first indication information, which will not be repeated here. The terminal device configures the record trigger configuration of the first report according to the first network device, including: the terminal device can determine the record trigger configuration configured by the first network device according to the relevant information element information or sending method or the second indication information in the record trigger configuration.

[0090] In this implementation, when determining to record the first report, the content of the first report may also be determined based on the type of primary and secondary cell change and the relevant information of the target primary and secondary cell. That is, when it is determined that the relevant information is configured by the first network device, the content of the first report is determined based on the relevant configuration configured by the first network device. The relevant configuration configured by the first network device may include a measurement object and / or a location information acquisition configuration. If the relevant configuration configured by the first network device includes a measurement object configuration, the first report includes measurement result information of the measurement object configured by the first network device; and / or, if the relevant configuration configured by the first network device includes a location information acquisition configuration, the first report includes location information determined based on the location information acquisition configuration. The measurement result information includes at least one of the following information: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Reference Signal Strength Indicator (RSSI), Signal to Interference plus Noise Ratio (SINR), or other signal quality information.

[0091] For example, both the primary network device (MN) and the secondary network device (SN) send relevant configurations via SRB1, wherein the relevant configurations sent by the MN to the UE include: {frequencies 1, 2, 3, location information acquisition configuration 1}; the relevant configurations sent by the SN to the UE include: {frequencies 4, 5, 6, location information acquisition configuration 2}; if it is determined that the primary and secondary cell mobility is triggered / configured by the MN, the UE determines to record the first report according to the recording trigger configuration configured by the MN, and the UE records the measurement results of frequencies 1, 2, 3 and / or location 1 in the first report. If the primary and secondary cell mobility is triggered / configured by the (source) SN, the UE determines to record the first report according to the recording trigger configuration configured by the (source) SN, and the UE records the measurement results of frequencies 4, 5, 6 and / or location 2 in the first report.

[0092] As some possible implementation methods, for example, in the above-mentioned second embodiment, it is also possible to determine the first report to be recorded based on the type of the signal wireless bearer SRB that sends the first configuration information; further, determine the content of the first report. For the scenario of ordinary primary and secondary cell changes, if the first configuration information is carried in SRB3, the terminal device can directly determine that the primary and secondary cell change configuration is a secondary network device configuration (the primary and secondary cell change is triggered by the secondary network device), and determine the first report to be recorded based on the record triggering configuration of the (source) secondary network device; for the scenario of ordinary primary and secondary cell changes, if the SRB carrying the primary and secondary cell configuration is SRB1, the terminal device can further determine which network device triggered the primary and secondary cell change based on the first indication information. When determining the first report, it is also possible to determine the content of the first report to be recorded based on the relevant configuration corresponding to the network device that triggered the primary and secondary cell change. If the first configuration information is carried in SRB3, the terminal device determines the content of the first report record based on the record triggering configuration of the (source) secondary network device, and the terminal device determines the content of the first report record based on the relevant configuration of the (source) secondary network device. The relevant configuration is as described above and will not be repeated here.

[0093] As some possible implementation methods, for example, in the above-mentioned embodiment three, when distinguishing the network devices that trigger the change of primary and secondary cells based on the first indication information, it is also necessary to consider the type of primary and secondary cell change and determine to record the first report, wherein, if the type of the primary and secondary cell change is an ordinary primary and secondary cell change, and the first indication information is configured, the terminal device can directly determine that the primary and secondary cell change configuration is a secondary network device configuration (the primary and secondary cell change is triggered by the secondary network device), and can determine to record the first report based on the record trigger configuration of the source secondary network device; and / or, if the primary and secondary cell change is an ordinary primary and secondary cell change, and the first indication information is not configured, the terminal device can directly determine that the primary and secondary cell change configuration is a primary network device configuration (the primary and secondary cell change is triggered by the primary network device), and can determine to record the first report based on the record trigger configuration of the source primary network device. In this implementation method, when determining the first report, if the type of the primary and secondary cell change is an ordinary primary and secondary cell change, and the first indication information is configured, the terminal device can directly determine that the primary and secondary cell change configuration is a secondary network device configuration (the primary and secondary cell change is triggered by the secondary network device), and can also determine the content of the first report record based on the relevant configuration of the source secondary network device; and / or, if the type of the primary and secondary cell change is an ordinary primary and secondary cell change, and the first indication information is not configured, the terminal device can directly determine that the primary and secondary cell change configuration is a primary network device configuration (the primary and secondary cell change is triggered by the primary network device), and can also determine the content of the first report record based on the relevant configuration of the source primary network device. Wherein, if the type of the primary and secondary cell change is a conditionally triggered primary and secondary cell change, and the first indication information is configured, and the first indication information related to the target primary and secondary cell is configured, the terminal device determines that it can record the first report based on the recorded trigger configuration of the source secondary network device; and / or, if the primary and secondary cell change is a conditionally triggered primary and secondary cell change, and the first indication information related to the target primary and secondary cell is not configured, the terminal device can determine to record the first report based on the recorded trigger configuration of the source primary network device. In this implementation, when determining the first report, if the type of the primary and secondary cell change is a conditionally triggered primary and secondary cell change, and the first indication information related to the target primary and secondary cell is configured, the terminal device determines that the conditionally triggered primary and secondary cell change is triggered by the secondary network device, and can also determine the content of the first report record based on the relevant configuration of the source secondary network device; and / or, if the type of the primary and secondary cell change is a conditionally triggered primary and secondary cell change, and the first indication information related to the target primary and secondary cell is not configured, the terminal device can directly determine that the conditionally triggered primary and secondary cell change is triggered by the primary network device, and can also determine the content of the first report record based on the relevant configuration of the source primary network device. The relevant configuration is as described above and will not be repeated here.

[0094] In some embodiments, in the above three possible implementation methods, if the terminal device needs to record the first report, the content of the first report also includes: if the terminal device has the global cell identifier and tracking area code of the source primary and secondary cells, the first report includes the source primary and secondary cell information as the global cell identifier and tracking area code; if there is no global cell identifier and / or tracking area code of the source primary and secondary cells, the first report includes the physical cell identifier (PCI) and frequency information of the source primary and secondary cells.

[0095] The following provides examples of how to determine whether to record the first report and how to determine the content of the first report in the first, second and third implementation modes described above.

[0096] (1) Implementation Method 1

[0097] The following describes a mechanism by which the terminal device determines whether to record the first report.

[0098] If the terminal device determines that the ratio of the running time of T304 to the maximum running time of T304 is greater than or equal to the T304 trigger threshold, the UE stores the information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0099] If the first indication information is configured, or if, in a conditionally triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or, if in a conditionally triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), and if the ratio of the running time of T310 to the maximum running time of T310 is greater than or equal to the T310 trigger threshold configured by the source primary and secondary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0100] If the first indication information is configured (for example, in a normal primary and secondary cell change scenario), or (in a conditionally triggered primary and secondary cell change scenario), if in the conditionally triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or if in the conditionally triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), and if the ratio of the running duration of T312 corresponding to the frequency point or measurement identification information corresponding to the target cell to the maximum running duration of T312 is greater than or equal to the T312 triggering threshold configured for the corresponding source primary and secondary cell, the UE stores the information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report;

[0101] As an example, before the UE executes the last primary and secondary cell mobility configuration, the UE is connected to the source primary and secondary cell. If in the conditionally triggered CPC scenario, the target PSCell selected by the UE is configured by the source primary and secondary cell, or the execution condition satisfied by the target PSCell selected by the UE is configured by the source primary and secondary cell, the terminal device determines whether to record the first report based on the record trigger configuration of the source primary and secondary cell configuration (for example, T310 trigger threshold, T312 trigger threshold or at least one of other timer trigger thresholds).

[0102] or,

[0103] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario), or if in a condition-triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary cell (also referred to as the source primary network device), and if the ratio of the running time of T310 to the maximum running time of T310 is greater than or equal to the T310 trigger threshold configured by the source primary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0104] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario), or if in a conditionally triggered primary and secondary cell change scenario, the target primary and secondary cell determined by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the execution condition satisfied by the target primary and secondary cell determined by the terminal device is configured by the source primary cell (also referred to as the source primary network device), and if the ratio of the T312 operating duration corresponding to the frequency point or measurement identification information corresponding to the target cell and the maximum operating duration of the T312 is greater than or equal to the T312 trigger threshold configured by the corresponding source primary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report.

[0105] As an example, before the UE executes the last primary and secondary cell mobility configuration, the UE is connected to the source primary and secondary cell. If in the conditionally triggered CPC scenario, the target PSCell selected by the UE is configured by the source primary cell, or the execution condition satisfied by the target PSCell selected by the UE is configured by the source primary cell, the terminal device determines whether to record the first report based on the record trigger configuration configured by the source primary cell.

[0106] The following describes how the terminal device determines the content of the first report:

[0107] If the first indication information is configured (for example, in a normal primary and secondary cell change scenario), or, (in a condition-triggered primary and secondary cell change scenario) if the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the execution condition satisfied by the determined or selected target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), the terminal device determines the content of the first report based on the relevant configuration of the source primary and secondary cell. For example, the terminal device records the measurement result information corresponding to the measurement object information in the relevant configuration of the source primary and secondary cell in the first report, and / or, the terminal device sets the location information in the first report based on the relevant configuration of the source primary and secondary cell; or,

[0108] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario), or if the terminal device determines that the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or if, in a condition-triggered primary and secondary cell change scenario, the determined or selected target primary and secondary cell is configured by the source primary cell (also referred to as the source primary and secondary network device), or the determined or selected target primary and secondary cell satisfies the execution condition configured by the source primary cell (also referred to as the source primary network device), the terminal device determines the content of the first report based on the relevant configuration of the source primary cell. For example, the terminal device records the measurement result information corresponding to the measurement object information configured by the source primary cell in the first report, and / or the terminal device sets the location information in the first report based on the relevant configuration of the source primary cell.

[0109] If the terminal device needs to record the first report, the content of the first report also includes: if there is a global cell identifier and tracking area code of the source primary and secondary cells, the first report includes the source primary and secondary cell information as the global cell identifier and tracking area code; if there is no global cell identifier and / or tracking area code of the source primary and secondary cells, the first report includes the physical cell identifier (PCI) and frequency information of the source primary and secondary cells.

[0110] (2) Implementation Method 2

[0111] The following describes a mechanism by which the terminal device determines whether to record the first report.

[0112] If the terminal device determines that the ratio of the running time of T304 to the maximum running time of T304 is greater than or equal to the T304 trigger threshold, the UE stores the information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0113] If the first indication information is configured, or (when the first indication information is not configured) if the primary and secondary cell mobility received by the terminal device is carried in SRB3, or, if in the condition-triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or, if in the condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), and, if the ratio of the running time of T310 to the maximum running time of T310 is greater than or equal to the T310 trigger threshold configured by the source primary and secondary cell, the UE stores the information related to the primary and secondary cell mobility (i.e., records the first report), and / or determines the content of the first report; or,

[0114] If the first indication information is configured, or (when the first indication information is not configured) if the primary and secondary cell mobility bearer received by the terminal device is in SRB3, or, if in the condition-triggered primary and secondary cell change scenario, if in the condition-triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source auxiliary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source auxiliary network device), or, if in the condition-triggered primary and secondary cell change scenario, the terminal device determines or selects The target primary and secondary cell selected is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), and if the ratio of the running time of T312 corresponding to the frequency point or measurement identification information corresponding to the target cell and the maximum running time of T312 is greater than or equal to the T312 trigger threshold configured in the corresponding source primary and secondary cell, the UE stores the information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0115] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario), or if in a condition-triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary cell (also referred to as the source primary network device), and if the ratio of the running time of T310 to the maximum running time of T310 is greater than or equal to the T310 trigger threshold configured by the source primary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0116] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario) (or, if in a conditionally triggered primary and secondary cell change scenario, the target primary and secondary cell determined by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the execution condition satisfied by the target primary and secondary cell determined by the terminal device is configured by the source primary cell (also referred to as the source primary network device), and if the ratio of the T312 operating duration corresponding to the frequency point or measurement identification information corresponding to the target cell and the maximum operating duration of the T312 is greater than or equal to the T312 trigger threshold configured by the corresponding source primary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report.

[0117] The following describes how the terminal device determines the content of the first report:

[0118] If the first indication information is configured, or (when the first indication information is not configured) if the primary and secondary cell mobility bearer received by the terminal device is in SRB3, or, if the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the terminal device determines that the execution conditions satisfied by the target primary and secondary cell are configured by the source primary and secondary cell (also referred to as the source secondary network device), or, if in the condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the execution conditions satisfied by the determined or selected target primary and secondary cell are configured by the source primary and secondary cell (also referred to as the source secondary network device), the terminal device determines the content of the first report based on the relevant configuration of the source primary and secondary cell. For example, the terminal device records the measurement result information corresponding to the measurement object information in the relevant configuration of the source primary and secondary cell in the first report, and / or, the terminal device sets the location information in the first report based on the relevant configuration of the source primary and secondary cell; or,

[0119] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario), or if the terminal device determines that the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or if, in a condition-triggered primary and secondary cell change scenario, the determined or selected target primary and secondary cell is configured by the source primary cell (also referred to as the source primary and secondary network device), or the determined or selected target primary and secondary cell satisfies the execution condition configured by the source primary cell (also referred to as the source primary network device), the terminal device determines the content of the first report based on the relevant configuration of the source primary cell. For example, the terminal device records the measurement result information corresponding to the measurement object information in the relevant configuration of the source primary cell in the first report, and / or the terminal device sets the location information in the first report based on the relevant configuration of the source primary cell.

[0120] If the terminal device needs to record the first report, the content of the first report also includes: if there is a global cell identifier and tracking area code of the source primary and secondary cells, the first report includes the source primary and secondary cell information as the global cell identifier and tracking area code; if there is no global cell identifier and / or tracking area code of the source primary and secondary cells, the first report includes the physical cell identifier (PCI) and frequency information of the source primary and secondary cells.

[0121] (3) Implementation Method 3

[0122] The following describes a mechanism by which the terminal device determines whether to record the first report.

[0123] If the terminal device determines that the ratio of the running time of T304 to the maximum running time of T304 is greater than or equal to the T304 trigger threshold, the UE stores the information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0124] If, in a normal primary and secondary cell change scenario, the first indication information is configured, or, (in a conditionally triggered primary and secondary cell change scenario) if, in a conditionally triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or, in a conditionally triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or, the terminal device determines that the first indication information related to the target primary and secondary cell is configured, and, if the ratio of the running time of T310 to the maximum running time of T310 is greater than or equal to the T310 trigger threshold configured by the source primary and secondary cell, the UE stores information related to the mobility of the source primary and secondary cell (i.e., records the first report), and / or determines the content of the first report; or,

[0125] If in a normal primary and secondary cell change scenario, the first indication information is configured, or if in a condition-triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source auxiliary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell configuration (also referred to as the source auxiliary network device), or if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source auxiliary network device), Or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell configuration (also referred to as the source secondary network device), or the terminal device determines that the first indication information related to the target primary and secondary cell is configured, and if the ratio of the running time of T312 corresponding to the frequency point or measurement identification information corresponding to the target cell and the maximum running time of T312 is greater than or equal to the T312 trigger threshold configured in the corresponding source primary and secondary cell, the UE stores the information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0126] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario, or a condition-triggered primary and secondary cell change scenario), or, if in a condition-triggered primary and secondary cell change scenario, the terminal device determines that the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or, if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the execution condition satisfied by the target primary and secondary cell determined or selected by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or, the terminal device determines that the first indication information related to the target primary and secondary cell is not configured, and, if the ratio of the running time of T310 to the maximum running time of T310 is greater than or equal to the T310 trigger threshold configured by the source primary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report; or,

[0127] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario, or a condition-triggered primary and secondary cell change scenario), or if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the execution condition satisfied by the target primary and secondary cell determined by the terminal device is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the first indication information related to the target primary and secondary cell is not configured, and if the ratio of the operating duration of T312 corresponding to the frequency point or measurement identification information corresponding to the target cell and the maximum operating duration of T312 is greater than or equal to the T312 trigger threshold configured by the corresponding source primary cell, the UE stores information related to the mobility of the primary and secondary cells (i.e., records the first report), and / or determines the content of the first report.

[0128] The following describes how the terminal device determines the content of the first report:

[0129] If in a normal primary and secondary cell change scenario, the first indication information is configured, or, (in a condition-triggered primary and secondary cell change scenario) if the terminal device determines that the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, if in a condition-triggered primary and secondary cell change scenario, the target primary and secondary cell determined or selected by the terminal device is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the execution condition satisfied by the determined or selected target primary and secondary cell is configured by the source primary and secondary cell (also referred to as the source secondary network device), or, the terminal device determines that the first indication information related to the target primary and secondary cell is configured, the terminal device determines the content of the first report according to the relevant configuration of the source primary and secondary cell. For example, the terminal device records the measurement result information corresponding to the measurement object information of the relevant configuration of the source primary and secondary cell in the first report, and / or, the terminal device sets the location information in the first report according to the relevant configuration of the source primary and secondary cell; or,

[0130] If the first indication information is not configured (for example, in a normal primary and secondary cell change scenario), or if the terminal device determines that the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the execution condition satisfied by the target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or if, in a condition-triggered primary and secondary cell change scenario, the determined or selected target primary and secondary cell is configured by the source primary cell (also referred to as the source primary and secondary network device), or the execution condition satisfied by the determined or selected target primary and secondary cell is configured by the source primary cell (also referred to as the source primary network device), or the terminal device determines that the first indication information related to the target primary and secondary cell is not configured, the terminal device determines the content of the first report according to the relevant configuration of the source primary cell. For example, the terminal device records the measurement result information corresponding to the measurement object information of the relevant configuration of the source primary cell in the first report, and / or the terminal device sets the location information in the first report according to the relevant configuration of the source primary cell.

[0131] If the terminal device needs to record the first report, the content of the first report also includes: if there is a global cell identifier and tracking area code of the source primary and secondary cells, the first report includes the source primary and secondary cell information as the global cell identifier and tracking area code; if there is no global cell identifier and / or tracking area code of the source primary and secondary cells, the first report includes the physical cell identifier (PCI) and frequency information of the source primary and secondary cells.

[0132] In some embodiments, the method may further include sending the first report to the network device.

[0133] FIG3 is a schematic diagram of a report sending method according to an embodiment of the present application. As shown in FIG3 , the method includes:

[0134] 301, the terminal device receives the primary and secondary cell change configuration;

[0135] 302, the terminal device receives the record trigger configuration;

[0136] 303, the terminal device receives the aforementioned related configuration;

[0137] 304, the terminal device determines whether to record the first report;

[0138] 305. The terminal device determines to record the content of the first report;

[0139] 306. The terminal device sends the first report to the network device.

[0140] The implementation of steps 301-306 is as described above and will not be repeated here. Optionally, the method may further include: the terminal device receives first indication information. For details, please refer to the aforementioned embodiment and will not be repeated here. The configuration in steps 301-303 and the first indication information may be carried by the same signaling or information element, or by different signaling or information elements, and the embodiments of the present application are not limited thereto.

[0141] It is worth noting that Figures 2 and 3 above only illustrate the embodiments of the present application, and the present application is not limited thereto. For example, other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the descriptions of Figures 2 and 3 above.

[0142] The above embodiments are merely exemplary descriptions of the methods of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used individually, or one or more of the above embodiments may be combined.

[0143] According to the embodiment of the present application, the terminal device can determine the network device that triggers the mobility of the primary and secondary cells, thereby determining whether to record potential failure problems in the mobility process of the primary and secondary cells, as well as the content of the record, avoiding the recording of erroneous or redundant content, ensuring robustness, and reducing unnecessary signaling overhead.

[0144] Embodiments of the second aspect

[0145] An embodiment of the present application provides a report receiving method, which is described from the perspective of a network device.

[0146] FIG4 is a schematic diagram of a report receiving method according to an embodiment of the present application. As shown in FIG4 , the method includes:

[0147] 401. The network device receives a first report sent by the terminal device, and the content of the first report is determined at least according to the type of change of the primary and secondary cells, and / or according to the relevant information of the target primary and secondary cells, and / or according to the signaling radio bearer SRB type for sending the first configuration information.

[0148] It is worth noting that FIG4 above only schematically illustrates an embodiment of the present application, and the present application is not limited thereto. For example, other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the description of FIG4 above.

[0149] For the implementation of the first report, please refer to the embodiment of the first aspect and will not be repeated here.

[0150] According to the embodiment of the present application, the terminal device can determine the network device that triggers the mobility of the primary and secondary cells, thereby determining whether to record potential failure problems in the mobility process of the primary and secondary cells, as well as the content of the record, avoiding the recording of erroneous or redundant content, ensuring robustness, and reducing unnecessary signaling overhead.

[0151] Embodiments of the third aspect

[0152] An embodiment of the present application provides a report recording device.

[0153] FIG5 is a schematic diagram of a report recording device according to an embodiment of the present application. This device may be, for example, a terminal device or one or more components or assemblies configured on a network device. Because the principle of solving the problem of this device is the same as that of the embodiment of the first aspect, its specific implementation can refer to the implementation of the method of the embodiment of the first aspect, and the same content will not be repeated here.

[0154] As shown in FIG5 , the apparatus 500 includes:

[0155] A receiver 501 receives first configuration information indicating a change in configuration of a primary and secondary cell; the primary and secondary cell change includes a normal primary and secondary cell change or a condition-triggered primary and secondary cell change;

[0156] The processor 502 determines to record a first report according to a type of primary and secondary cell change, and / or relevant information of a target primary and secondary cell, and / or a signaling radio bearer (SRB) type for sending the first configuration information.

[0157] For the implementation of the receiver 501 and the processor 502, reference may be made to the embodiment of the first aspect and will not be repeated here.

[0158] The above embodiments of the present application are illustrative, but the present application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0159] It is worth noting that the above description only describes the components or modules related to this application, but this application is not limited thereto. The above-mentioned device may also include other components or modules. For the specific content of these components or modules, please refer to the relevant art. In addition, the above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0160] According to the embodiment of the present application, the terminal device can determine the network device that triggers the mobility of the primary and secondary cells, thereby determining whether to record potential failure problems in the mobility process of the primary and secondary cells, as well as the content of the record, avoiding the recording of erroneous or redundant content, ensuring robustness, and reducing unnecessary signaling overhead.

[0161] Embodiments of the fourth aspect

[0162] An embodiment of the present application also provides a communication system, including a network device and / or a terminal device.

[0163] FIG6 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in FIG6 , a communication system 600 may include a network device 601 and a terminal device 602 .

[0164] In some embodiments, the terminal device 602 is configured to execute the method described in the embodiment of the first aspect. Since the method has been described in detail in the embodiment of the first aspect, its content is incorporated herein and will not be repeated.

[0165] An embodiment of the present application also provides a terminal device.

[0166] Figure 7 is a schematic diagram of a terminal device according to an embodiment. As shown in Figure 7 , terminal device 700 may include a processor 710 and a memory 720. Memory 720 stores data and programs and is coupled to processor 710. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

[0167] For example, the processor 710 may be configured to execute a program to implement the method in the embodiment of the first aspect.

[0168] As shown in Figure 7 , the terminal device 700 may further include: a communication module 730 (receiver or transmitter), an input unit 740, a display 750, and a power supply 760. The functions of these components are similar to those in the prior art and are not described in detail here. It is worth noting that the terminal device 700 does not necessarily include all of the components shown in Figure 7 , and these components are not essential. Furthermore, the terminal device 700 may also include components not shown in Figure 7 , for which reference may be made to the prior art.

[0169] An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

[0170] Figure 8 is a schematic diagram of a network device according to an embodiment of the present application. As shown in Figure 8 , network device 800 may include a processor 801 and a memory 802 ; the memory 802 is coupled to the processor 801 . The memory 802 may store various data and may also store an information processing program 803 , which is executed under the control of the processor 801 .

[0171] In some embodiments, the processor 801 may be configured to control the transceiver to execute the method described in the second aspect, the contents of which are incorporated herein and will not be repeated here.

[0172] Furthermore, as shown in FIG8 , network device 800 may further include a transceiver 804 and an antenna 805. The functions of these components are similar to those in the prior art and are not described in detail here. It is worth noting that network device 800 does not necessarily include all of the components shown in FIG8 ; furthermore, network device 800 may also include components not shown in FIG8 , for which reference may be made to the prior art.

[0173] An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the method described in the embodiment of the second aspect.

[0174] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the method described in the embodiment of the second aspect.

[0175] An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the first aspect.

[0176] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the first aspect.

[0177] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0178] The methods / apparatus described in conjunction with the embodiments of the present application may be directly embodied as hardware, software modules executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figures and / or one or more combinations of functional block diagrams may correspond to either software modules of a computer program flow or hardware modules. These software modules may correspond to the steps shown in the figures. These hardware modules may be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0179] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0180] One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0181] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0182] 1. A report receiving method, wherein the method comprises:

[0183] The network device receives a first report sent by the terminal device, and the content of the first report is determined at least based on the type of change in the primary and secondary cells, and / or based on the relevant information of the target primary and secondary cells, and / or based on the signaling radio bearer SRB type of the first configuration information.

[0184] 2. A network device comprising:

[0185] A receiver that receives a first report sent by a terminal device, wherein the content of the first report is determined at least according to the type of change of the primary and secondary cells, and / or according to the relevant information of the target primary and secondary cells, and / or according to the signaling radio bearer SRB type of the first configuration information.

Claims

1. A reporting and recording device, applied to a terminal device, comprising: a receiver, which receives first configuration information for indicating a primary and secondary cell change configuration; the primary and secondary cell change includes an ordinary primary and secondary cell change or a condition-triggered primary and secondary cell change; a processor, which determines to record a first report according to the type of the primary and secondary cell change, and / or according to the relevant information of the target primary and secondary cell, and / or according to the signaling radio bearer SRB type for sending the first configuration information.

2. The device according to claim 1, wherein The first configuration information includes a recording trigger configuration for the first report, and the recording trigger configuration information is used for the terminal device to determine whether to record the first report.

3. The device according to claim 1, wherein The first configuration information is configured by a (source) primary network device and / or by a (source) secondary network device.

4. The device according to any one of claims 1 to 3, wherein The processor determines to record the first report according to the type of the primary and secondary cell change, and / or according to the relevant information of the target primary and secondary cell, including: If the type of the primary and secondary cell change is a condition-triggered primary and secondary cell change, and when the processor determines that the relevant information of the target primary and secondary cell is configured by a first network device, the processor determines to record the first report according to the recording trigger configuration configured by the first network device; the first network device is a (source) primary network device or a (source) secondary network device.

5. The apparatus according to claim 4, wherein The processor determines that the relevant information of the target primary and secondary cell is configured by the first network device, including: the target primary and secondary cell is configured by the first network device, or, the execution condition corresponding to the target primary and secondary cell is configured by the first network device, or, the first indication information related to the target primary and secondary cell is configured.

6. The device according to claim 4, wherein When the processor determines that the relevant information is configured by the first network device, the processor also determines the content of the first report recording according to the relevant configuration configured by the first network device.

7. The device according to any one of claims 1 to 3, wherein The first configuration information further includes first indication information or does not include first indication information, and the first indication information is used to indicate that the first configuration information is configured by a secondary network device.

8. The apparatus according to claim 7, wherein When the first configuration information is sent through SRB1, the first configuration information further includes the first indication information.

9. The device according to claim 8, wherein, The processor determines to record the first report according to the signaling radio bearer SRB type for sending the first configuration information, including: If the first configuration information is carried on SRB3, the processor determines to record the first report according to the recording trigger configuration of the (source) secondary network device.

10. The apparatus according to claim 9, wherein, If the first configuration information is carried on SRB3, the processor also determines the content of the first report recording according to the relevant configuration of the (source) secondary network device.

11. The device according to claim 7, wherein, The processor determines to record the first report according to the type of the primary and secondary cell change, including: If the type of the primary and secondary cell change is an ordinary primary and secondary cell change, and when the first indication information is configured, the processor determines to record the first report according to the recording trigger configuration of the source secondary network device; and / or, if the primary and secondary cell change is an ordinary primary and secondary cell change, and when the first indication information is not configured, the processor determines to record the first report according to the recording trigger configuration of the source primary network device.

12. The device according to claim 11, wherein If the type of the primary-secondary cell change is a normal primary-secondary cell change and the first indication information is configured, the processor further determines the content of the first report record according to the relevant configuration of the source secondary network device; and / or, If the type of the primary-secondary cell change is a normal primary-secondary cell change and the first indication information is not configured, the processor further determines the content of the first report record according to the relevant configuration of the source primary network device.

13. The device according to claim 6 or 10 or 12, wherein, The relevant configuration includes a measurement object configuration, and the first report includes measurement result information of the measurement object; and / or, The relevant configuration includes a location information acquisition configuration, and the first report includes location information determined by the location information acquisition configuration.

14. The device according to claim 6 or 10 or 12, wherein The content of the first report further includes: If there are the global cell identifier and the tracking area code of the source primary-secondary cell, the first report includes that the source primary-secondary cell information is the global cell identifier and the tracking area code; if there is no global cell identifier and / or tracking area code of the source primary-secondary cell, the first report further includes the physical cell identifier and frequency point information of the source primary-secondary cell.

15. A reporting and recording method, wherein, The method includes: A terminal device receives first configuration information for indicating a primary-secondary cell change configuration; the primary-secondary cell change includes a normal primary-secondary cell change or a condition-triggered primary-secondary cell change; The terminal device determines to record a first report according to the type of the primary-secondary cell change, and / or according to relevant information of the target primary-secondary cell, and / or according to the signaling radio bearer SRB type for sending the first configuration information.

16. The method according to claim 15, wherein, Determining to record the first report according to the type of the primary-secondary cell change, and / or according to relevant information of the target primary-secondary cell includes: If the type of the primary-secondary cell change is a condition-triggered primary-secondary cell change and it is determined that the relevant information of the target primary-secondary cell is configured by a first network device, the terminal device determines to record the first report according to a record trigger configuration configured by the first network device; the first network device is a (source) primary network device or a (source) secondary network device.

17. The method according to claim 16, wherein, The terminal device determining that the relevant information of the target primary-secondary cell is configured by the first network device includes: the target primary-secondary cell is configured by the first network device, or, the execution condition corresponding to the target primary-secondary cell is configured by the first network device, or, the first indication information related to the target primary-secondary cell is configured.

18. The method according to claim 16, wherein, ​ ​ 19. The method according to claim 15, wherein ​ ​ ​

Images