Conditional access

Abstract

12. An apparatus comprising: means for receiving secondary radio link failure information, the secondary radio link failure information indicating a failure situation in a secondary radio link between a user equipment and at least one source secondary node while the user equipment is configured to conditionally access the at least one target secondary node, the user equipment having dual connectivity with the source master node and the source secondary node; means for determining a plurality of proposed target primary cells of a secondary cell group to be prepared by the at least one target secondary node for conditional access by the user equipment; and means for determining, based at least in part on the received secondary radio link failure information, assistance information that assists the at least one target secondary node in determining which at least one of the plurality of proposed target primary cells of the secondary cell group is to be prepared by the at least one target secondary node for conditional access by the user equipment; and means for directly or indirectly transmitting information indicating the plurality of proposed target primary cells of the secondary cell group and the determined assistance information to the at least one target secondary node.

Description

Technical Field

[0001] Examples of the present disclosure relate to conditional access. Some examples relate to conditional access to target secondary nodes.

Background Art

[0002] A wireless network includes a plurality of network nodes including terminal nodes and access nodes. Communication between the terminal nodes and the access nodes is wireless.

[0003] In some situations, it may be desirable to improve or enhance conditional access by a terminal node to a target secondary node.

Summary of the Invention

[0004] According to various embodiments, although not necessarily all, an apparatus is provided, the apparatus comprising means for receiving secondary wireless link failure information, the secondary wireless link failure information indicating a failure situation in a secondary wireless link between a user equipment and at least one source secondary node while the user equipment is configured to access at least one target secondary node conditionally, the user equipment having dual connectivity with a source master node and the source secondary node, the means for receiving; means for determining a plurality of proposed target primary cells of a secondary cell group prepared by at least one target secondary node for conditional access by the user equipment; A means for determining assistance information based at least in part on received secondary radio link failure information, wherein the assistance information assists at least one target secondary node in determining which at least one of a plurality of proposed target primary cells in a secondary cell group is prepared by at least one target secondary node for conditional access by user equipment, Means for directly or indirectly transmitting multiple proposed target primary cells of a secondary cell group and determined assistance information to at least one target secondary node. It is equipped with.

[0005] In some examples, the assistance information includes priority information for multiple proposed target primary cells in a secondary cell group for preparation by at least one target secondary node for conditional access by the user device.

[0006] In some examples, the assistance information includes information indicating the number of times the proposed target primary cell for the secondary cell group was the correct choice for conditional access by the user's device.

[0007] In some examples, sending information indicating multiple proposed target primary cells for a secondary cell group and determined assistance information includes sending at least one SgNB Change Required message and / or at least one SgNB Addition Request message.

[0008] In some examples, information indicating multiple proposed target primary cells in a secondary cell group includes at least one cell identity.

[0009] In some cases, the means are At least one processor, At least one memory to store instructions and The device is equipped with such a feature, and when an instruction is executed by at least one processor, it results in the execution of the device.

[0010] Methods are provided, though not necessarily all, according to various embodiments, and the methods are Receiving secondary radio link failure information, which indicates the status of a failure in the secondary radio link between the user equipment and at least one source secondary node while the user equipment is configured to conditionally access at least one target secondary node, and the user equipment has dual connectivity with the source master node and the source secondary node, and receiving the information. To determine multiple proposed target primary cells for a secondary cell group prepared by at least one target secondary node for conditional access by user equipment, Determining assistance information based at least in part on received secondary radio link failure information, wherein the assistance information assists at least one target secondary node in determining which at least one of a plurality of proposed target primary cells in a secondary cell group is prepared by at least one target secondary node for conditional access by user equipment. Information indicating multiple proposed target primary cells in a secondary cell group and determined assistance information are transmitted directly or indirectly to at least one target secondary node. Includes.

[0011] In some examples, the assistance information includes priority information for multiple proposed target primary cells in a secondary cell group for preparation by at least one target secondary node for conditional access by the user device.

[0012] In some examples, the assistance information includes information indicating the number of times the proposed target primary cell for the secondary cell group was the correct choice for conditional access by the user's device.

[0013] In some examples, sending information indicating multiple proposed target primary cells for a secondary cell group and determined assistance information includes sending at least one SgNB change required message and / or at least one SgNB Addition Request message.

[0014] In some examples, information indicating multiple proposed target primary cells in a secondary cell group includes at least one cell identity.

[0015] In various embodiments, though not all, a computer program is provided that includes instructions, and the instructions are given to the device at least as follows: Receiving secondary radio link failure information, which indicates the status of a failure in the secondary radio link between the user equipment and at least one source secondary node while the user equipment is configured to conditionally access at least one target secondary node, and the user equipment has dual connectivity with the source master node and the source secondary node, and receiving the information. To determine multiple proposed target primary cells for a secondary cell group prepared by at least one target secondary node for conditional access by user equipment, Determining assistance information based at least in part on received secondary radio link failure information, wherein the assistance information assists at least one target secondary node in determining which at least one of a plurality of proposed target primary cells in a secondary cell group is prepared by at least one target secondary node for conditional access by user equipment. Information indicating multiple proposed target primary cells in a secondary cell group and determined assistance information are transmitted directly or indirectly to at least one target secondary node. This is intended to implement [the necessary measures].

[0016] In some examples, the assistance information includes priority information for multiple proposed target primary cells in a secondary cell group for preparation by at least one target secondary node for conditional access by the user device.

[0017] In some examples, the assistance information includes information indicating the number of times the proposed target primary cell for the secondary cell group was the correct choice for conditional access by the user's device.

[0018] In some examples, sending information indicating multiple proposed target primary cells for a secondary cell group and determined assistance information includes sending at least one SgNB change required message and / or at least one SgNB Addition Request message.

[0019] In some examples, information indicating multiple proposed target primary cells in a secondary cell group includes at least one cell identity.

[0020] According to various embodiments, although not necessarily all, an apparatus is provided, the apparatus means for receiving assistance information configured to assist a target secondary node in determining information indicating a plurality of proposed target primary cells of a secondary cell group prepared by the target secondary node for conditional access by a user equipment, and which of at least one of the plurality of proposed target primary cells of the secondary cell group is prepared by at least one target secondary node for conditional access by the user equipment, the assistance information being determined based at least in part on secondary radio link failure information associated with the target secondary node; means for determining at least one of the plurality of proposed target primary cells of the secondary cell group prepared for conditional access by the user equipment based at least in part on the received assistance information; means for transmitting conditional access configuration information indicating the determined at least one target primary cell of the secondary cell group to a master node; comprising.

[0021] In some examples, the assistance information includes priority information about a plurality of proposed target primary cells of a secondary cell group for preparation by at least one target secondary node for conditional access by a user equipment.

[0022] In some examples, the assistance information includes information indicating the number of times the proposed target primary cell of the secondary cell group was the correct choice for conditional access by the user equipment.

[0023] In some examples, receiving information indicating a plurality of proposed target primary cells of a secondary cell group and assistance information includes receiving at least one SgNB Addition Request message.

[0024] In some examples, the assistance information is generated by a source master node or a source secondary node.

[0025] According to various embodiments, although not necessarily all, a method is provided, the method is Receiving assistance information configured to assist a target secondary node in determining information indicating a plurality of proposed target primary cells of a secondary cell group prepared by the target secondary node for conditional access by a user equipment, and which of at least one of the plurality of proposed target primary cells of the secondary cell group is prepared by at least one target secondary node for conditional access by the user equipment, the assistance information being determined based at least in part on secondary radio link failure information associated with the target secondary node, Determining at least one of the plurality of proposed target primary cells of the secondary cell group prepared for conditional access by the user equipment based at least in part on the received assistance information, Transmitting conditional access configuration information indicating the determined at least one target primary cell of the secondary cell group to a master node including.

[0026] In some examples, the assistance information includes priority information about a plurality of proposed target primary cells of a secondary cell group for preparation by at least one target secondary node for conditional access by a user equipment.

[0027] In some examples, the assistance information includes information indicating the number of times the proposed target primary cell for the secondary cell group was the correct choice for conditional access by the user's device.

[0028] In some cases, receiving information and assistance information indicating multiple proposed target primary cells for a secondary cell group includes receiving at least one SgNB Addition Request message.

[0029] In some cases, assistance information is generated by the source master node or the source secondary node.

[0030] In various embodiments, though not all, a computer program is provided that includes instructions, and the instructions are given to the device at least as follows: Receiving information indicating multiple proposed target primary cells in a secondary cell group prepared by the target secondary node for conditional access by user equipment, and assistance information configured to help the target secondary node determine which of the multiple proposed target primary cells in the secondary cell group is prepared by at least one target secondary node for conditional access by user equipment, wherein the assistance information is determined at least in part on secondary radio link failure information associated with the target secondary node. Based at least partially on the received assistance information, determine at least one of several proposed target primary cells of a secondary cell group to be prepared for conditional access by the user device, Send conditional access configuration information to the master node that indicates at least one determined target primary cell of the secondary cell group. This is intended to implement [the necessary measures].

[0031] In some examples, the assistance information includes priority information for multiple proposed target primary cells in a secondary cell group for preparation by at least one target secondary node for conditional access by the user device.

[0032] In some examples, the assistance information includes information indicating the number of times the proposed target primary cell for the secondary cell group was the correct choice for conditional access by the user's device.

[0033] In some cases, receiving information and assistance information indicating multiple proposed target primary cells for a secondary cell group includes receiving at least one SgNB Addition Request message.

[0034] In some cases, assistance information is generated by the source master node or the source secondary node.

[0035] In various embodiments, though not necessarily all, the apparatus is provided, and the apparatus is At least one processor, At least one memory to store instructions and The device comprises such that, when an instruction is executed by at least one processor, it causes the device to perform at least a portion of one or more of the methods disclosed herein.

[0036] In various embodiments, though not necessarily all, an apparatus is provided that includes means for carrying out at least one or more of the methods disclosed herein.

[0037] Examples of what is claimed in the attached claims are provided, though not necessarily all of them.

[0038] The above examples and any features of this disclosure are described separately, but it is understood that their provision in all possible combinations and arrangements is included within this disclosure. It is understood that various examples of this disclosure may include any or all features of features described with respect to other examples of this disclosure, and vice versa. Similarly, it is recognized that any one, more or all of the features may be implemented, included in, or made enforceable by apparatus, methods, and / or computer program instructions, in any combination, as desired and as necessary.

[0039] The description of the function should also be given further consideration to disclosing any suitable means for performing that function.

[0040] Several examples are illustrated here with reference to the attached drawings. [Brief explanation of the drawing]

[0041] [Figure 1] This figure shows an example of the subject matter described herein. [Figure 2] This figure shows another example of the subject matter described herein. [Figure 3A] This figure shows another example of the subject matter described herein. [Figure 3B] This figure shows another example of the subject matter described herein. [Figure 4] This figure shows another example of the subject matter described herein. [Figure 5] This figure shows another example of the subject matter described herein. [Figure 6] This figure shows another example of the subject matter described herein. [Figure 7A] This figure shows another example of the subject matter described herein. [Figure 7B] This figure shows another example of the subject matter described herein. [Modes for carrying out the invention]

[0042] The figures do not necessarily adhere to a constant proportional scale. Certain features and views in the figures may be shown schematically or their scale may be exaggerated for clarity and conciseness. For example, the dimensions of some elements in the figure may be exaggerated relative to others to aid in explanation. Similar reference figures are used in the figures to specify similar features. For clarity, not all reference figures are necessarily shown in all figures.

[0043] definition Master Node (MN): A network node that provides control plane connectivity to the core network.

[0044] Master Cell Group (MCG): A group of cells associated with an MN, including PCells and SCells.

[0045] Secondary Node (SN): A network node that provides additional wireless resources to the UE, but is not an MN.

[0046] Secondary Cell Group (SCG): A group of cells associated with a SN, including PSCells and SCells.

[0047] PCell: A cell for uplink / downlink connections to the MN. It is the MCG cell used to initiate initial access to the MN.

[0048] PSCell: A cell for uplink / downlink connections to the SN. The SCG cell used to initiate initial access to the SN.

[0049] Conditional Handover (CHO): A handover procedure triggered by the UE only when the configured execution conditions are met for a prepared candidate cell. The conditions are pre-configured by the network. In 3GPP, the conditional handover execution conditions are specified by condExecutionCond in the CondReconfigToAddModList information element within the conditional reconfiguration information element in the RRC reconfiguration message.

[0050] Dual Connectivity (DC): The UE has simultaneous connections to the MN and SN. This is the operating mode of the UE in RRC_CONNECTED, which consists of a master cell group and a secondary cell group.

[0051] Configuration information: Information used to configure the operation of the UE. In 3GPP, configuration information may be provided, for example, within an RRC reconfiguration message. "Configuration information comprising" a term or entity (e.g., handover execution conditions for a primary cell, SN addition conditions for dual connectivity by a primary cell, etc.) can mean that the configuration information contains enough information to retrieve the entity. It may or may not include all of the entity's parameters, it may instead consist of pointers to the entity or its parameters, or it can mean that the configuration includes the entity.

[0052] In 3GPP, an RRC reconfiguration message specifies a conditional reconfiguration information element that provides additional information about the DC. The conditional reconfiguration information element includes the CondReconfigToAddModList information element. The CondReconfigToAddModList information element includes condExecutionCond and condRRCReconfig. Additional conditions for primary secondary cells (PSCell) are specified by condExecutionCond. The RRC reconfiguration message that is applied when the specified conditions are met is provided by condRRCReconfig.

[0053] Measurement configuration Configuration information used to configure the UE to perform measurements. In 3GPP, measurement configurations may be provided, for example, within an RRC reconfiguration message. The term "[entity] measurement configuration" (e.g., source primary cell measurement configuration) can refer to the measurement configuration prepared by an entity.

[0054] A can includes one or more reporting configurations associated with one or more measurement objects and one or more measurement identities.

[0055] can contains MeasConfig information elements as defined in TS 38.331.

[0056] Figure 1 shows an example of a network 100 comprising multiple network nodes, including a terminal node 110, an access node 120, and one or more core nodes 129. The terminal node 110 and the access node 120 communicate with each other. One or more core nodes 129 communicate with the access node 120.

[0057] Network 100, in this example, is a radio telecommunications network in which at least some of the terminal nodes 110 and access nodes 120 communicate with each other using radio waves / signals transmission / reception.

[0058] One or more core nodes 129 may communicate with each other in some examples. One or more access nodes 120 may communicate with each other in some examples.

[0059] Network 100 may be a cellular network having multiple cells 122, each serviced by an access node 120. In this example, the interface between the terminal node 110 defining the cell 122 and the access node 120 is a wireless interface 124.

[0060] Access node 120 is a cellular wireless transceiver. Terminal node 110 is a cellular wireless transceiver.

[0061] In the example shown, the cellular network 100 is a third-generation partnership project (3GPP) network in which terminal nodes 110 are user equipment (UE) and access nodes 120 are base stations.

[0062] In this example, network 100 is an Evolved Universal Terrestrial Radio Access network (E-UTRAN). E-UTRAN consists of E-UTRAN node B (eNB) 120 that provide E-UTRA user plane and control plane (RRC) protocol termination to UE 110. The eNBs 120 are interconnected with each other by an X2 interface 126. The eNBs are also connected to a Mobility Management Entity (MME) 129 by an S1 interface 128.

[0063] In another example, network 100 is a Next Generation Radio Access network (NG-RAN). The NG-RAN consists of g-node B (gNB) 120 that provide user plane and control plane (RRC) protocol termination to UE 110. The gNBs 120 are interconnected with each other by an Xn interface 126. The gNBs are also connected to an Access and Mobility Management Function (AME) by an N2 interface 128.

[0064] In this example, network 100 may include a combination of E-UTRAN and NG-RAN.

[0065] User devices may include mobile devices. When a reference is made to a user device, that reference shall, to the extent possible, include and encompass references to mobile devices.

[0066] UE168 can perform a handover procedure that modifies the serving cell of UE168. In the example, the handover procedure can be a conditional handover procedure.

[0067] A conditional handover (CHO) procedure can be thought of as a handover triggered by UE168 when one or more handover execution conditions are met. One or more handover execution conditions can be pre-configured by network 100.

[0068] In this example, the UE168 can have additional wireless resources using dual connectivity (DC).

[0069] In the DC, the configured set of serving cells for UE168 has two subsets: a Master Cell Group (MCG) containing the serving cells of Master Node (MN) 172, and a Secondary Cell Group (SCG) containing the serving cells of Secondary Node (SN) 170.

[0070] In the example, a conditional modification of the primary cell (PSCell) of a secondary cell group may be configured. UE168 may be configured to have execution conditions for performing an SN modification on one or more target SN166. Thus, UE168 may be configured to conditionally access one or more target SN166.

[0071] In the example, at least one target SN166 may be configured to efficiently and / or intelligently prepare at least one target PSCell for conditional access by UE168.

[0072] Figure 2 shows an example of method 200.

[0073] In the example, Figure 2 could be conceivable to illustrate multiple methods. For example, Figure 2 could show one or more actions in multiple actors / entities. In the example, Figure 2 could be conceivable to illustrate multiple methods performed by individual actors / entities.

[0074] One or more of the features discussed in relation to Figure 2 may be found in one or more of the other figures.

[0075] In the example in Figure 2, multiple devices transmit and / or receive one or more signals and / or one or more messages across and / or through and / or using a network. In the example, any suitable form of communication within any suitable network may be used. For example, at least a portion of network 100 in Figure 1 may be used.

[0076] Therefore, in this example, the multiple devices in Figure 2 form at least a portion of the network 100 described in relation to Figure 1.

[0077] In the example shown, the terminal node 110 and the three access nodes 120 transmit and / or receive one or more signals and / or one or more messages. In the example in Figure 2, the terminal node 110 is UE168, and the three access nodes 120 are source MN172, source SN172, and target SN166.

[0078] In the example shown in Figure 2, UE168 has dual connectivity with source MN172 and source SN170.

[0079] In the example, communication and / or transmission between the elements shown in Figure 2 can proceed through any number of intervening elements, including the absence of intervening elements.

[0080] One UE168 is shown in the example in Figure 2, but the example may include any appropriate number of UE168s.

[0081] Similarly, the example may include any appropriate number of network nodes.

[0082] In the example, method 200 and / or at least a part of method 200 may be considered a method for enhancing conditional access to a target SN.

[0083] In the example, method 200 and / or at least a part of method 200 could be considered a way to enhance the selection of at least one target PSCell for conditional access by the UE.

[0084] In the example, method 200 and / or at least a part of method 200 may be considered a method for providing assistance information to a target SN in order to assist the UE in selecting at least one target PSCell for conditional access.

[0085] In the example shown, the location of the block indicates the entity that performs the action. For example, block 202 is performed by / in source SN170.

[0086] In the example, method 200 is part of a method that allows and / or enables UE168 to be configured to conditionally access at least one target SN166. In some examples, method 200 is part of a conditional PSCell addition and change (CPAC) method / process / procedure. For example, method 200 may be part of a conditional PSCell change (CPC) method / process / procedure or a conditional PSCell addition (CPA) method / process.

[0087] In some cases, method 200 can be considered an SN initiation. That is, in some cases, method 200 can be initiated by source SN170. For example, method 200 can be part of a CPAC method / process / procedure for SN initiation.

[0088] In the example shown, method 200 is an SN initiation, blocks 202, 204, and 206 are performed in / by source SN170, and block 208 includes source SN170.

[0089] In some cases, method 200 can be considered an MN start. That is, in some cases, method 200 can be started by source MN172. For example, method 200 can be part of a CPAC method / process / procedure for MN start.

[0090] In such an example, blocks 202, 204, and 206 are implemented in source MN172 by / , and block 208 is implemented in source MN172 by / .

[0091] In block 202, method 200 includes receiving secondary link failure (S-RLF) information 164, the S-RLF information indicating a failure in the secondary radio link between UE 168 and at least one source SN 170 while UE 168 is configured to conditionally access at least one target SN 166, and UE 168 has dual connectivity with source MN 172 and source SN 170.

[0092] In some examples, Method 200 includes receiving secondary link failure (S-RLF) information 164 associated with at least one target secondary node 166, the S-RLF information indicating a failure status of the secondary radio link between UE 168 and at least one source SN 170 while UE 168 is configured to conditionally access at least one target SN 166, and UE 168 has dual connectivity with source MN 172 and source SN 170.

[0093] Figure 2 shows, for example, one or more actions that receive one or more signals, and therefore also shows that the corresponding transmission / transmission features / actions result from this.

[0094] Similarly, Figure 2 shows that any transmission / transmission feature / action can also result in a corresponding reception / reception feature / action.

[0095] For example, from the perspective of UE168, block 202 could be interpreted as indicating the transmission of S-RLF information 164.

[0096] In some cases, S-RLF information 164 may be considered secondary cell group (SCG) failure information.

[0097] Receiving S-RLF fault information 164 can be done in any appropriate manner using any appropriate method. In an example, receiving S-RLF information 164 includes receiving one or more signals and / or messages.

[0098] In the example, the S-RLF information 164 may be received from any appropriate number of different UEs 168. Thus, in the example, the S-RLF information 164 indicates the status of a secondary radio link failure experienced by multiple different UEs.

[0099] In some examples, in block 202, method 200 includes receiving secondary link failure (S-RLF) information 164, the S-RLF information indicating a secondary radio link failure between multiple UE168 and at least one source SN170 while UE168 is configured to conditionally access at least one target SN170, and UE168 has dual connectivity with source MN172 and source SN170.

[0100] S-RLF information 164 can be received and / or collected over any appropriate period of time. For example, S-RLF information 164 can be received from multiple UEs 168 over a period of time sufficient to allow sufficient S-RLF information 164 to be received so that method 200 can be carried out. For example, S-RLF information 164 can be received over a period of time sufficient to allow sufficient S-RLF information 164 to be received so that assistance information 176 can be determined in block 206.

[0101] In the example, the duration can be 2-3 hours, half a day, 1 day, 2-3 days, 1 week, 2-3 weeks, 1 month, etc.

[0102] In this example, S-RLF information 164 may be received over the period of Key Performance Indicator (KPI) collection.

[0103] The S-RLF information 164 may include any appropriate information. For example, the S-RLF information 164 may include any appropriate information indicating the status of a secondary radio link failure between UE 168 and at least one source SN 170 while UE 168 is configured to conditionally access at least one target SN 166, and UE 168 has dual connectivity with source MN 172 and source SN 170.

[0104] For example, the S-RLF information 164 may include any appropriate information to enable the assistance information 176 to be determined in block 206.

[0105] In the example, the S-RLF information 164 includes SCG fault report information transmitted by the UE168 when the UE168 detects a radio link fault in the connection of the source SN170 to the PSCell.

[0106] S-RLF information 164 may include fault type (e.g., due to downlink or uplink radio problems) and / or location information of UE168 and / or received signal power information and / or time information and / or configuration information of UE168.

[0107] In the example in Figure 2, method 200 is an SN initiation, and S-RLF information 164 is transmitted from UE168 to source MN172, which then forwards it to source SN170.

[0108] However, in the example of MN initiation, S-RLF information 164 may be sent from UE168 to source MN172 without transferring S-RLF information 164 to source SN170, and block 202 is performed in source MN172 by / .

[0109] In the example, S-RLF information 164 is associated with at least one target SN166 and indicates a secondary radio link failure between UE168 and at least one source secondary node 170 while UE168 is configured to conditionally access at least one target SN166.

[0110] S-RLF information 164 can be considered to be associated with target SN166, because S-RLF information 164 was caused by a secondary radio link failure that occurred while UE168 was configured to conditionally access target SN166.

[0111] The status of a secondary wireless link failure can be considered as a failure of the secondary wireless link.

[0112] The status of a secondary radio link failure can be considered as the configuration and / or failure status of the secondary radio link.

[0113] The circumstances of the secondary radio link failure may be considered to be the physical and / or radio conditions that UE168 experienced over a period of time prior to the S-RLF.

[0114] Any appropriate period may be used. For example, any appropriate period that adequately covers the S-RLF situation may be used.

[0115] For example, a period ranging from 5 seconds to 30 minutes may be used.

[0116] For example, a period ranging from 30 seconds to 20 minutes may be used.

[0117] For example, a period ranging from 1 to 15 minutes may be used.

[0118] For example, a period of 5 to 10 minutes may be used.

[0119] In the example, the duration can be at least M seconds, where M is a positive integer.

[0120] In the example, the duration can be at least X minutes, where X is a positive integer.

[0121] As an example, the example in Figure 3A is referenced.

[0122] Figure 3A shows an exemplary scenario. In the example in Figure 3A, UE168 is located within and serviced by source PSCell188.

[0123] In the example shown, UE168 moves along trajectory 196, and as UE168 moves along trajectory 196, the UE detects two PSCells, namely PSCell1 190 and PSCell2 192.

[0124] Figure 3B shows a plot of reference signal received power (RSRP) for source PSCell188, PSCell1 190, and PSCell2 192 as UE168 moves along trajectory 196 shown in the example in Figure 3A.

[0125] Regarding the plot shown in the example in Figure 3B, at time t1, PSCell1 190 reaches a measurable signal intensity that fulfills the RSRP offset 194 configured in UE168, triggering the preparation of PSCell1 190 as a candidate cell for conditional access by UE168, such as CPC.

[0126] At time t2, PSCell2 192 similarly satisfies the RSRP offset 194 readiness criteria configured in UE168, and a measurement event report is sent from UE168 to source PSCell188, which then triggers, for example, a SgNB(conditional) Change Required message to MN and, for example, a SgNB(conditional) Addition Request message from MN to target SN, containing the measurement results for target PSCell1 190 and PSCell2 192.

[0127] In the example shown, target SN may decide to prepare target PSCell1 190 because target PSCell1 190 has the best reception measurement.

[0128] However, later, in the example in Figure 3B, at time instance t3, UE168 experiences a secondary radio link failure with respect to the current serving PSCell and transmits S-RLF failure information to MN.

[0129] In the example shown, target SN fails to prepare target PSCell2 192 in time, resulting in an S-RLF in source PSCell188 because the conditional access execution criteria for the prepared PSCell1 190 were not met.

[0130] Figures 3A and 3B may be conceivable to illustrate the S-RLF conditions experienced by UE168. In the example in Figure 3, the S-RLF information 164 includes information indicating the conditions, such as the UE trajectory 196 and / or RSRP measurements and / or timing and / or UE configuration.

[0131] In the examples in Figures 3A and 3B, the information contained in the S-RLF information 164 may indicate that target PSCell2 192 should be prepared in this case (because target PSCell2 192 had the best measurement when the S-RLF occurred).

[0132] However, in this example, target SN166 determined, based on the information available at the time, which cells would be prepared as candidates for conditional access by UE168, for example, as candidates for CPAC. Furthermore, the number of cells that can be prepared may be limited.

[0133] Returning to the example in Figure 2, in the example, the S-RLF information 164 indicates a fault condition in the secondary radio link between UE 168 and at least one source secondary node 170 while UE 168 is configured to conditionally access at least one target SN 166.

[0134] UE168 can be configured to conditionally access at least one target SN166 in any appropriate manner using any appropriate method. For example, UE168 can receive any appropriate configuration information to configure UE168 to access at least one target SN166 if at least one criterion is met.

[0135] In the example, UE168 may be configured to have at least one CPAC configuration. For example, UE168 may be configured to have at least one CPC or CPA configuration.

[0136] In the example, accessing a PSCell or any other suitable cell involves performing a random access procedure with respect to the cell.

[0137] In the example, accessing a PSCell or any other suitable cell involves establishing a connection to the cell.

[0138] In the example, source SN170 or source MN172 in the MN initiation example can determine statistics based at least partially on the received S-RLF information 164. For example, source SN170 or source MN172 in the MN initiation example can determine statistics based on a considerable amount of wrong target PSCell preparation observed by the S-RLF information 164; see, for example, Figures 3A and 3B.

[0139] In the example, this can be continued until statistical convergence is achieved.

[0140] In block 204, method 200 includes determining a number of proposed target PSCell 174 prepared by at least one target secondary node 166 for conditional access by UE 168.

[0141] Determining multiple proposed target PSCell174 prepared by at least one target SN166 can be carried out in any suitable manner using any suitable method. For example, determining multiple proposed target PSCell174 in block 204 can be carried out as part of a CPAC method / process / procedure, for example, as part of a CPC method / process / procedure or a CPA method / process / procedure.

[0142] In the example, target SN166 cannot prepare a PSCell for conditional access by UE168 that is not included in the proposed target PSCell174.

[0143] In the example, source SN170 or source MN172 in the MN-start example may determine that a change in PSCell may be required for UE168, and block 206 may be performed based at least in part on that determination. For example, source SN170 (or source MN172) may receive at least one measurement report from UE168, and determine at least in part on the received at least one measurement report that a change in PSCell may be required for UE168.

[0144] UE168 can be the UE168 from which S-RLF information 164 was received, or it can be the UE168 from which S-RLF information 164 was not received.

[0145] In some examples, source SN170 (or source MN172) determines the conditional access execution conditions for each of the multiple proposed target PSCell174. For example, source SN170 (or source MN172) can determine CPAC execution conditions, such as CPC or CPA execution conditions, for each of the multiple proposed target PSCell174.

[0146] In some examples, source SN170 (or source MN) determines the maximum number of target PSCells that can be prepared by target SN166. Thus, in the example, target SN prepares a limited number of target PSCells from a number of proposed target PSCells 174.

[0147] In block 206, method 200 includes determining assistance information 176 based at least in part on received S-RLF information 164, the assistance information being configured to assist and / or assist at least one target SN166 in determining which of a plurality of proposed target PSCell 174 will be prepared by at least one target SN166 for conditional access by UE 168.

[0148] Block 206 can be implemented in any suitable manner using any suitable method. In the example, the received S-RLF information 164 can be used in any suitable manner to determine the assistance information 176.

[0149] For example, S-RLF information 164 can be processed and / or analyzed in any appropriate manner to enable the determination of assistance information 176. For example, statistics determined from S-RLF information 164 can be used when determining assistance information 174.

[0150] Therefore, in the example, determining assistance information 176 based at least in part on the received S-RLF information 164 includes determining assistance information 176 based at least in part on an analysis of the received S-RLF information 164 and / or statistics determined from the received S-RLF information 164.

[0151] For example, in the case of the example in Figure 3, the determined assistance information 176 is configured to help UE 168 prepare candidate PSCell 2 192 instead of candidate PSCell 1 190 for conditional access by UE 168.

[0152] In some cases, determining assistance information involves using mobility robustness optimization algorithms and / or artificial intelligence and / or machine learning techniques.

[0153] The assistance information 176 may include any appropriate information in any appropriate form. For example, the assistance information 176 may include any appropriate information to help at least one target SN166 determine which of several proposed target PSCell 174 is prepared by at least one target SN166 for conditional access by UE 168.

[0154] In the example, the assistance information 176 may include any appropriate information to indicate to the target SN that at least one of the multiple proposed target PSCell 174 is to be prepared preferentially compared to at least one other of the multiple proposed target PSCell 174.

[0155] In the example, the assistance information may include any appropriate information to indicate the ranking of multiple proposed targets PSCell174 for preparation by at least one target SN166 for conditional access by UE168.

[0156] In some examples, assistance information 176 includes priority information for multiple proposed targets PSCell 174 for preparation by at least one target SN166 for conditional access by UE 168.

[0157] Priority information can be thought of as information that indicates to target SN166 that the preparation of at least one specific proposed target PSCell174 out of several proposed target PSCell174s should be prioritized over at least one other proposed target PSCell174.

[0158] For example, priority information can indicate to target SN166 in the example in Figure 3 that the preparation of target PSCell2 192 should be prioritized over target PSCell1 190 for conditional access by UE168.

[0159] Priority information can include any appropriate information in any appropriate form. For example, priority information can include any appropriate information to indicate to target SN166 that the preparation of at least one particular proposed target PSCell174 out of several proposed target PSCell174 should be prioritized over at least one other proposed target PSCell174.

[0160] In the example, priority information may include values ​​associated with each of the multiple proposed target PSCell174 that indicate the priority of the associated target PSCell. For example, priority information may include values ​​between 0 and 100 for the multiple proposed PSCell174, for example, 0 indicating the lowest priority and 100 indicating the highest priority.

[0161] In some examples, assistance information 176 includes information indicating the number of times the proposed target PSCell 174 was the correct choice for conditional access by UE 168.

[0162] In the example, the information indicating the number of times the proposed target PSCell174 was the correct choice for conditional access by UE168 may include any appropriate information in any appropriate form. For example, the information indicating the number of times the proposed target PSCell174 was the correct choice for conditional access by UE168 may indicate the number absolutely or relatively.

[0163] For example, the information can indicate the number of times each of the multiple proposed target PSCell174 was the correct choice, and / or the percentage of time each of the multiple proposed target PSCell174 was the correct choice.

[0164] If, under S-RLF circumstances, conditional access to the target PSCell by UE168 would have prevented S-RLF, then the target PSCell can be considered the correct choice for conditional access by UE168.

[0165] For example, in the example in Figure 3, PSCell2 192 can be considered the correct choice for conditional access by UE168. This is because, under the S-RLF failure scenario in the example in Figure 3, if UE168 had been configured to conditionally access PSCell2 192, the S-RLF would have been prevented.

[0166] In block 208, method 200 includes directly or indirectly transmitting information 178 indicating multiple proposed PSCells 174 and determined assistance information 176 to at least one target SN 166.

[0167] As a result, Figure 2 shows method 200, and method 200 is, Receiving secondary radio link failure information 164, which indicates a failure in the secondary radio link between user equipment 168 and at least one source secondary node 172 while user equipment 168 is configured to conditionally access at least one target secondary node 166, and user equipment 168 has dual connectivity with source master node 172 and source secondary node 170, and receiving this information, To determine multiple proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node for conditional access by user device 168, The assistance information 176 is determined based at least in part on the received secondary radio link failure information 164, wherein the assistance information 176 assists the at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in the secondary cell group is prepared by the at least one target secondary node 166 for conditional access by the user equipment 168. Information 178 indicating multiple proposed target primary cells 174 of the secondary cell group and determined assistance information 176 is transmitted directly or indirectly to at least one target secondary node 166. Includes.

[0168] The information 178, which shows multiple proposed PSCell 174s and determined assistance information 176, may include any appropriate information.

[0169] In some examples, information 178 indicating multiple proposed target PSCell174 includes at least one cell identity, such as at least one physical cell identity (PCI) and / or at least one global cell identity.

[0170] Block 208 can be implemented in any suitable way using any suitable method. In the example, transmitting information 178 in block 208 includes transmitting at least one signal and / or message.

[0171] In some SN initiation examples, information 178 of block 208 is sent from source SN170 to source MN172, which then forwards it to at least one target SN166.

[0172] In some MN initiation examples, information 178 of block 208 is sent from source MN172 to at least one target SN166.

[0173] In some examples, sending information 178 indicating multiple proposed target PSCell 174s and determined assistance information 176 includes sending at least one SgNB Change Required message and / or at least one SgNB Addition Request message.

[0174] In the example, from the perspective of target SN166, block 208 includes receiving information 178 indicating a plurality of proposed target PSCells 174 prepared by target SN166 for conditional access by UE168, and assistance information 176 configured to help target SN166 determine which of the plurality of proposed target PSCells is prepared by target SN166 for conditional access by UE168, the assistance information 176 being determined at least in part on S-RLF information 164 associated with target SN166.

[0175] In the example, receiving information 178 indicating multiple proposed target PSCell174s and assistance information 176 from the perspective of target SN166 includes receiving at least one SgNB Addition Request message.

[0176] In the example, assistance information 176 is generated by source MN172 or source SN170.

[0177] Block 210 includes determining at least one of several proposed target PSCell 174 to be prepared for conditional access by UE 168, based at least in part on the received assistance information 176.

[0178] Block 210 can be implemented in any suitable manner using any suitable method.

[0179] In the example, assistance information 176 may be used in any appropriate way to help target SN166 determine which of several proposed target PSCell174 is prepared for conditional access by UE168.

[0180] In some examples, assistance information 176 is used by target SN166 to determine which of several proposed target PSCell174 should be preferentially prepared for conditional access by UE168, compared to at least one of several proposed target PSCell174.

[0181] In the example, target SN166 can determine, at least in part, based on assistance information 176, which of the multiple proposed targets PSCell174 has one or more highest priorities for preparation for conditional access by UE168.

[0182] For example, in at least some cases where the assistance information 176 includes priority information, the target SN166 can determine which at least one of the multiple proposed targets PSCell174 has one or more associated highest priority values.

[0183] For example, in at least several cases where the assistance information includes information indicating the number of times a proposed target PSCell174 was the correct choice for conditional access by UE168, target SN166 can determine which of the multiple proposed PSCell174s has the maximum number of associations.

[0184] For example, in the case of the example in Figure 3A, the assistance information 176 may include a priority value of 80 for PSCell2 192 and a priority value of 20 for PSCell1 190, thereby helping target SN166 to preferentially prepare PSCell2 192 for conditional access by UE168, while avoiding S-RLF.

[0185] In the example, target SN166 can prepare at least one of several proposed target PSCell174 for conditional access by UE168. Target SN166 can prepare at least one of several proposed target PSCell174 for CPAC, for example, for CPC or CPA.

[0186] In the example, target SN166 can prepare conditional access configuration information 186 for at least one of several proposed targets PSCell174.

[0187] The conditional access configuration information 186 may include any appropriate information. For example, the conditional access configuration information 186 may include any appropriate information to configure UE168 to access at least one of several proposed target PSCell174 when at least one criterion is met.

[0188] In the example, conditional access configuration information 186 may include CPAC configuration information. For example, conditional access configuration information 186 may include CPA or CPC configuration information.

[0189] In some examples, the conditional access configuration information 186 includes a CPAC configuration, such as a CPA or CPC configuration, for each of the determined at least one of the multiple proposed target PSCell 174.

[0190] In block 210, method 200 includes sending conditional access configuration information 186 indicating the determined at least one target PSCell to MN172. In the example, the determined at least one target PSCell is the at least one target PSCell determined in / in block 210.

[0191] As a result, Figure 2 shows method 200, and method 200 is, Receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by the target secondary node 166 for conditional access by the user device 168, and assistance information 176 configured to help the target secondary node 166 determine which of the plurality of proposed target primary cells 174 of the secondary cell group is prepared by the target secondary node 166 for conditional access by the user device 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure information 164 associated with the target secondary node 166. Based at least in part on the received assistance information 176, determine at least one of several proposed target primary cells 174 of the secondary cell group to be prepared for conditional access by the user device 168, To send conditional access configuration information 186 indicating at least one determined target primary cell of the secondary cell group to the master node 172 and Includes.

[0192] In the example, the conditional access configuration information 186 may be considered as the conditional access configuration information 186 for and / or for at least one determined target PSCell.

[0193] Block 210 can be implemented in any suitable way using any suitable method. In the example, sending conditional access configuration information 186 indicating at least one determined target PSCell to MN172 includes sending at least one signal and / or message.

[0194] In some examples, target SN166 sends identifiers of the prepared target PSCell, such as cell identity, such as physical cell identity (PCI) and / or global cell identity, to MN172.

[0195] In the example, method 200 may then proceed according to a conditional access method / process / procedure to configure the UE to conditionally access target SN165 based at least in part on the information transmitted in block 212.

[0196] For example, Method 200 can then proceed according to a CPAC method / process / procedure such as a CPA or CPC method / process / procedure. See, for example, Figure 6.

[0197] In the example, method 200 can be repeated any appropriate number of times.

[0198] As mentioned above, the example can utilize a mobility robustness optimization algorithm. In this regard, a Self-Organizing Network (SON) is a network that can automatically adjust wireless network parameters based on statistics collected from the network. Mobility Robustness Optimization (MRO) is an example of a SON that deals with adjusting parameters that control cell changes (e.g., changes in PSCells).

[0199] In MRO, the network collects statistics (incident reports can be one of these statistics) over a specific period, for example, indicated by the KPI collection period. During each KPI collection period, for example, the KPI statistics are processed by the network, and decisions are made to make changes. The network applies the changes to assistance information, for example, and collects new statistics about the changes within the new KPI collection period.

[0200] This process may be repeated by the network until the KPI collection period is reached, and the process determines that nothing needs to be done (e.g., the problem has been resolved, or it is no longer possible to adjust the threshold / offset).

[0201] In this case, it can be considered that MRO has converged. In the example, the performance metric values ​​collected during each KPI collection period should be statistically significant (large statistics) in order to have reliable network decisions when making changes.

[0202] The examples in this disclosure are advantageous and provide technical benefits.

[0203] For example, an example of this disclosure allows a target SN to select an appropriate target PSCell from among the proposed target PSCells.

[0204] For example, an example of this disclosure reduces wireless link failures caused by preparing incorrect candidate PSCells.

[0205] Figure 4 shows an example of method 400.

[0206] In the example, Method 400 may be carried out by any suitable apparatus having any suitable means for carrying out Method 400. For example, the apparatus described in relation to Figures 7A and / or 7B.

[0207] In the example, method 400 can be carried out by source SN170, such as source SN in Figure 2.

[0208] In the example, method 400 can be carried out by source MN172, such as source MN in Figure 2.

[0209] In block 402, method 400 includes receiving secondary radio link failure information 164, which indicates a failure in the secondary radio link between user equipment 168 and at least one source secondary node 170 while user equipment 168 is configured to conditionally access at least one target secondary node 166, and user equipment 168 has dual connectivity with source master node 172 and source secondary node 170.

[0210] In block 404, method 400 includes determining a plurality of proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node 166 for conditional access by user equipment 168.

[0211] In block 406, method 400 includes determining assistance information 176 based at least in part on received secondary radio link failure information 164, the assistance information 176 assisting at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in a secondary cell group is prepared by at least one target secondary node 166 for conditional access by user equipment 168.

[0212] In block 408, method 400 includes directly or indirectly transmitting information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group and determined assistance information 176 to at least one target secondary node 166.

[0213] As a result, Figure 4 shows method 400, and method 400 is, Receiving secondary radio link failure information 164, which indicates a failure in the secondary radio link between the user device 168 and at least one source secondary node 170 while the user device 168 is configured to conditionally access at least one target secondary node 166, and the user device 168 has dual connectivity with the source master node 172 and the source secondary node 170, is also included. To determine multiple proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node 166 for conditional access by user device 168, The assistance information 176 is determined based at least in part on the received secondary radio link failure information 164, wherein the assistance information 176 assists the at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in the secondary cell group is prepared by the at least one target secondary node 166 for conditional access by the user equipment 168. Information 178 indicating multiple proposed target primary cells 174 of the secondary cell group and determined assistance information 176 is transmitted directly or indirectly to at least one target secondary node 166. Includes.

[0214] Figure 5 shows an example of method 500.

[0215] In the example, method 500 may be carried out by any suitable apparatus having any suitable means for carrying out method 500. For example, the apparatus described in relation to Figures 7A and / or 7B.

[0216] In the example, method 500 may be carried out by target SN166, such as target SN166 in Figure 2.

[0217] In block 502, method 500 includes receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by the target secondary node 166 for conditional access by user equipment 168, and assistance information 176 configured to help the target secondary node 166 determine which of the plurality of proposed target primary cells 174 of the secondary cell group is prepared by the target secondary node 166 for conditional access by user equipment 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure 164 information associated with the target secondary node 166.

[0218] In block 504, method 500 includes determining at least one of a plurality of proposed target primary cells 174 of a secondary cell group to be prepared for conditional access by user equipment 168, based at least in part on the received assistance information 176.

[0219] In block 506, method 500 includes sending conditional access configuration information 186 indicating at least one determined target primary cell of the secondary cell group to the master node 172.

[0220] As a result, Figure 5 shows method 500, which is: Receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by the target secondary node 166 for conditional access by the user device 168, and assistance information 176 configured to help the target secondary node 166 determine which of the plurality of proposed target primary cells 174 of the secondary cell group is prepared by the target secondary node 166 for conditional access by the user device 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure information 164 associated with the target secondary node 166. Based at least in part on the received assistance information 176, determine at least one of several proposed target primary cells 174 of the secondary cell group to be prepared for conditional access by the user device 168, To send conditional access configuration information 186 indicating at least one determined target primary cell of the secondary cell group to the master node 172 and Includes.

[0221] Figure 6 shows an example of method 600.

[0222] Some examples relate to the Third Generation Partnership Project (3GPP) network. Figure 6 can be considered to illustrate some such examples.

[0223] The following explanation may be considered to illustrate some such examples.

[0224] In the example in Figure 6, multiple devices transmit and / or receive one or more signals and / or one or more messages across and / or through and / or using a network. In the example, any suitable form of communication within any suitable network may be used. For example, at least a portion of network 100 in Figure 1 may be used.

[0225] Therefore, in this example, the multiple devices in Figure 6 form at least a portion of the network 100 described in relation to Figure 1.

[0226] In the example shown, the terminal node 110 and four or more access nodes 120 transmit and / or receive one or more signals and / or one or more messages. In the example in Figure 6, the terminal node 110 is UE168, and the four or more access nodes 120 are source MN172, source SN170, target SN166, and other possible target nodes 166n.

[0227] In the example shown in Figure 6, UE168 has dual connectivity with source MN172 and source SN170.

[0228] In the example, communication and / or transmission between the elements shown in Figure 6 can proceed through any number of intervening elements, including the absence of intervening elements.

[0229] One UE168 is shown in the example in Figure 6, but the example may include any appropriate number of UE168s.

[0230] Similarly, the example may include any appropriate number of network nodes.

[0231] A high-level flowchart is shown in Figure 6, and a CPC (Critical Process Control) is performed at the start of SN (Single Network). However, in the example, a CPC at the start of MN (Manual Network) may also be performed.

[0232] Block 1: The source SN uses SCG failure information reports received from the UE to collect information / statistics about "wrong CPC preparation list" and updates its priority / information to be sent to other nodes in the event of an SN change.

[0233] Appearance 1 Block 2: The source SN initiates inter-SN PSCell modification by providing a priority for each proposed target PSCell, thereby indicating to prioritizing the preparation of a particular target PSCell over other target PSCells. Block 3 / 4: The MN forwards the received priority along with the SgNB Addition Request to the target SN.

[0234] Embodiment 2: Note that this embodiment may be implemented in addition to or independently of Embodiment 1. Block 5: The source SN initiates inter-SN PSCell modification by indicating information about the probability of success of each proposed target PSCell being the correct PSCell to the target SN. This number can be an absolute number or a percentage. Block 6 / 7: The MN forwards the received information to the target SN along with the SgNB Addition Request.

[0235] Block 8 / 9: Target SN / Other possible target nodes prioritize target PSCells with higher priority or higher probability of success, as indicated by the source SN, when selecting target PSCells for CPC configuration.

[0236] In blocks 10 / 11: The target SN sends the CPC configuration for each target PSCell to be prepared and the ID of the target PSCell to be prepared to the MN. In block 12, the MN sends the conditional (re)configuration, including the CPC configuration of the candidate target PSCell, to the UE along with the CPC execution conditions. In block 13, the UE sends a message to the MN acknowledging receipt of the conditional configuration, and the MN then acknowledging the source SN's readiness for SN changes in block 14. In block 15, the UE evaluates the CPC execution conditions for the prepared target PSCell. In block 16, the CPC execution conditions are met for the PSCell candidates within target SN1. The UE sends a message to the MN in block 17 indicating the execution of the CPC configuration. The message includes the completion of the embedded SN RRC reconstruction to target SN1, which is sent in block 18. • UE terminates random access at block 19.

[0237] Figure 7A shows an example of device 130. Device 130 may be a device controller for a terminal node 110, such as a UE168, or network elements 172, 170, and / or 166 such as an eNB or gNB. Device 130 may be considered a controller.

[0238] The implementation of 130 may be a controller circuit. The controller 130 may be implemented in hardware alone, in a specific form in software including only firmware, or in a combination of hardware and software (including firmware).

[0239] As shown in Figure 7A, the controller 130 may be implemented by using instructions that enable hardware functions, for example, by using executable instructions of a computer program 136 in a general-purpose or dedicated processor 132, the executable instructions may be stored on a computer-readable storage medium (disk, memory, etc.) for execution by such processor 132.

[0240] The processor 132 is configured to read from and write to memory 134. The processor 132 may also have an output interface through which data and / or commands are output by the processor 132, as well as an input interface through which data and / or commands are input to the processor 132.

[0241] Memory 134 stores a computer program 136, which contains computer program instructions (computer program code). When loaded into the processor 132, the computer program 136 controls the operation of the device 130. The computer program instructions of the computer program 136 provide logic and routines that enable the device to perform the actions shown in the attached diagram. The processor 132 can load and execute the computer program 136 by reading from memory 134.

[0242] In this example, the apparatus 130 is At least one processor 132, At least one memory 134 containing computer program code and The device 130 is equipped with at least one memory 134 and computer program code, and at least one processor 132 provides at least, Receiving secondary radio link failure information 164, which indicates a failure in the secondary radio link between the user device 168 and at least one source secondary node 170 while the user device 168 is configured to conditionally access at least one target secondary node 166, and the user device 168 has dual connectivity with the source master node 172 and the source secondary node 170, To determine multiple proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node 166 for conditional access by user device 168, Determining assistance information 176 based at least in part on the received secondary radio link failure information 164, wherein the assistance information 176 assists at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in the secondary cell group is prepared by at least one target secondary node 166 for conditional access by user equipment 168, and To transmit, directly or indirectly, information 178 indicating multiple proposed target primary cells 174 of the secondary cell group and determined assistance information 176 to at least one target secondary node 166. It was configured to carry out the following.

[0243] In this example, the apparatus 130 is At least one processor 132, At least one memory 134 containing computer program code and The device 130 is equipped with at least one memory 134 and computer program code, and at least one processor 132 provides at least, Receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by the target secondary node 166 for conditional access by the user device 168, and assistance information 176 configured to help the target secondary node 166 determine which of the plurality of proposed target primary cells of the secondary cell group is prepared by the target secondary node 166 for conditional access by the user device 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure information 164 associated with the target secondary node 166. Based at least in part on the received assistance information 176, determine at least one of several proposed target primary cells 174 of the secondary cell group prepared for conditional access by the user device 168, and Send conditional access configuration information 186 indicating at least one determined target primary cell of the secondary cell group to the master node 172. It was configured to carry out the following.

[0244] In this example, the apparatus 130 is At least one processor 132, At least one memory 134 containing computer program code and The device is equipped with at least one memory which stores instructions, and when an instruction is executed by at least one processor 132, the device provides at least, Receiving secondary radio link failure information 164, which indicates a failure in the secondary radio link between the user device 168 and at least one source secondary node 170 while the user device 168 is configured to conditionally access at least one target secondary node 166, and the user device 168 has dual connectivity with the source master node 172 and the source secondary node 170, To determine multiple proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node 166 for conditional access by user device 168, Determining assistance information 176 based at least in part on the received secondary radio link failure information 164, wherein the assistance information 176 assists at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in the secondary cell group is prepared by at least one target secondary node 166 for conditional access by user equipment 168, and To transmit, directly or indirectly, information 178 indicating multiple proposed target primary cells 174 of the secondary cell group and determined assistance information 176 to at least one target secondary node 166. Have them do it.

[0245] In this example, the apparatus 130 is At least one processor 132, At least one memory 134 containing computer program code and The device is equipped with at least one memory which stores instructions, and when an instruction is executed by at least one processor 132, the device provides at least, Receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by the target secondary node 166 for conditional access by the user device 168, and assistance information 176 configured to help the target secondary node 166 determine which of the plurality of proposed target primary cells 174 of the secondary cell group is prepared by the target secondary node 166 for conditional access by the user device 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure information 164 associated with the target secondary node 166. Based at least in part on the received assistance information 176, determine at least one of several proposed target primary cells 174 of the secondary cell group prepared for conditional access by the user device 168, and Send conditional access configuration information 186 indicating at least one determined target primary cell of the secondary cell group to the master node 172. Have them do it.

[0246] As shown in Figure 7A, the computer program 136 may arrive at the device 130 by any suitable delivery mechanism 162. The delivery mechanism 162 may be, for example, a machine-readable medium, a computer-readable medium, a non-temporary computer-readable storage medium, a computer program product, a memory device, a recording medium such as a Compact Disc Read-Only Memory (CD-ROM) or Digital Versatile Disc (DVD) or solid memory, or a manufactured product comprising or tangibly embodying the computer program 136. The delivery mechanism may also be a signal configured to reliably transfer the computer program 136. The device 130 may propagate or transmit the computer program 136 as a computer data signal.

[0247] The device must have at least the following, namely, Receiving secondary radio link failure information 164, which indicates a failure in the secondary radio link between the user device 168 and at least one source secondary node 170 while the user device 168 is configured to conditionally access at least one target secondary node 166, and the user device 168 has dual connectivity with the source master node 172 and the source secondary node 170, To determine multiple proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node 166 for conditional access by user device 168, Determining assistance information 176 based at least in part on the received secondary radio link failure information 164, wherein the assistance information 176 assists at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in the secondary cell group is prepared by at least one target secondary node 166 for conditional access by user equipment 168, and To transmit, directly or indirectly, information 178 indicating multiple proposed target primary cells 174 of the secondary cell group and determined assistance information 176 to at least one target secondary node 166. A computer program instruction for causing, or at least for causing, a certain action.

[0248] The device must have at least the following, namely, Receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by the target secondary node 166 for conditional access by the user device 168, and assistance information 176 configured to help the target secondary node 166 determine which of the plurality of proposed target primary cells 174 of the secondary cell group is prepared by the target secondary node 166 for conditional access by the user device 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure information 164 associated with the target secondary node 166. Based at least in part on the received assistance information 176, determine at least one of several proposed target primary cells 174 of the secondary cell group prepared for conditional access by the user device 168, and Send conditional access configuration information 186 indicating at least one determined target primary cell of the secondary cell group to the master node 172. A computer program instruction for causing, or at least for causing, a certain action.

[0249] Computer program instructions may be contained within computer programs, non-temporary computer-readable media, computer program products, or machine-readable media. In some, but not all, computer program instructions may be distributed across two or more computer programs.

[0250] Although memory 134 is shown as a single component / circuit, it may be implemented as one or more separate components / circuits, some or all of which may be integrated / removable and / or provide permanent / semi-permanent / dynamic / cached storage.

[0251] In this example, memory 134 comprises random access memory 158 and read-only memory 160. In this example, computer program 136 may be stored in read-only memory 158. See, for example, Figure 8B.

[0252] The processor 132 is shown as a single component / circuit, but may be implemented as one or more separate components / circuits, some or all of which may be integrated / removable. The processor 132 may be a single-core or multi-core processor.

[0253] References to "computer-readable storage medium," "computer program product," "tangibly embodied computer program," or "controller," "computer," and "processor" should be understood to encompass not only computers with different architectures such as single / multiprocessor architectures and sequential (von Neumann) / parallel architectures, but also dedicated circuits such as field-programmable gate arrays (FPGAs), application-specific circuits (ASICs), signal processing devices, and other processing circuit sections. References to computer programs, instructions, and code should be understood to encompass software for programmable processors, such as instructions for processors, configuration settings for fixed-function devices, gate arrays, or programmable logic devices, or firmware such as programmable content for hardware devices.

[0254] As used in this application, the term "circuitry" means, namely, (a) Circuit implementation configurations consisting only of hardware (such as implementation configurations consisting only of analog and / or digital circuitry), and (b) A combination of hardware circuits and software, for example (where applicable), (i) A combination of analog circuitry and / or digital hardware circuitry having software / firmware, (ii) Any part of a hardware processor (including a digital signal processor) having software, the software, and one or more memories that work together to implement various functions on a device such as a mobile phone or a server, and (c) A hardware circuit and / or processor such as a microprocessor or a part of a microprocessor that requires software (e.g., firmware) for operation, but the software may not be present when not required for operation may refer to one or more or all of them.

[0255] This definition of circuitry applies to all uses of this term in this application, including those in any claim. As a further example, as used in this application, the term circuitry also covers mere hardware circuits or processors and their (or their) accompanying software and / or firmware implementations. The term circuitry covers, for example, and when applicable to elements of a particular claim, a baseband integrated circuit for a mobile device or a similar integrated circuit within a server, a cellular network device, or other computing or network devices.

[0256] The blocks shown in the accompanying drawings may represent steps of a method and / or sections of code within a computer program 136. An example of a particular order for the blocks does not necessarily imply that there is a required or preferred order for the blocks, and the order and arrangement of the blocks may vary. Additionally, some blocks may be omitted.

[0257] When a structural feature is described, the structural feature may be replaced by means for implementing one or more of the functions of the structural feature, whether the function or functions are explicitly or implicitly described.

[0258] Therefore, device 130, in the example, Means for receiving secondary radio link failure information 164, wherein the secondary radio link failure information 164 indicates a failure status in the secondary radio link between the user device 168 and at least one source secondary node 170 while the user device 168 is configured to conditionally access at least one target secondary node 166, and the user device 168 has dual connectivity with the source master node 172 and the source secondary node 170, and the receiving means Means for determining multiple proposed target primary cells 174 of a secondary cell group prepared by at least one target secondary node 166 for conditional access by user device 168, A means for determining assistance information 176 based at least in part on received secondary radio link failure information 164, wherein the assistance information 176 assists at least one target secondary node 166 in determining which at least one of a plurality of proposed target primary cells 174 in a secondary cell group is prepared by at least one target secondary node 166 for conditional access by user equipment 168. Means for directly or indirectly transmitting information 178 indicating multiple proposed target primary cells 174 of a secondary cell group and determined assistance information 176 to at least one target secondary node 166. It can be equipped with.

[0259] Therefore, in this example, the apparatus 130 is, A means for receiving information 178 indicating a plurality of proposed target primary cells 174 of a secondary cell group prepared by a target secondary node 166 for conditional access by a user device 168, and assistance information 176 configured to assist the target secondary node 166 in determining which at least one of the plurality of proposed target primary cells 174 of the secondary cell group is prepared by the target secondary node 166 for conditional access by the user device 168, wherein the assistance information 176 is determined at least in part on secondary radio link failure 164 information associated with the target secondary node 166. A means for determining at least one of a plurality of proposed target primary cells 174 of a secondary cell group prepared for conditional access by user equipment 168, based at least in part on the received assistance information 176, Means for transmitting conditional access configuration information 186 indicating at least one determined target primary cell of a secondary cell group to the master node 172 It can be equipped with.

[0260] In the example, the apparatus 130 may include means for carrying out one or more methods or at least a part of one or more methods, as described herein.

[0261] In the example, the apparatus 130 may be configured to carry out one or more methods or at least a part of one or more methods as described herein.

[0262] Systems, devices, methods, and computer programs may utilize machine learning, which may include statistical learning. Machine learning is a branch of computer science that gives computers the ability to learn without being explicitly programmed. A computer learns from experience E with respect to a certain class of tasks T and performance measure P if its performance on a task T, measured by P, improves with experience E. Computers can often learn from conventional training data to make predictions about future data. Machine learning includes supervised learning, either entirely or partially, and unsupervised learning, either entirely or partially. Machine learning may enable discrete outputs (e.g., classification, clustering) and continuous outputs (e.g., regression). Machine learning may be implemented, for example, using different approaches such as cost function minimization, artificial neural networks, support vector machines, and Bayesian networks. Cost function minimization may be used, for example, in linear and polynomial regression and K-means clustering. For example, an artificial neural network with one or more hidden layers models the complex relationship between input vectors and output vectors. Support vector machines may be used for supervised learning. A Bayesian network is a directed acyclic graph that demonstrates the conditional independence of multiple random variables.

[0263] The examples described above apply to automotive systems, telecommunications systems, electronic systems including consumer electronic products, distributed computing systems, audio, visual, and audiovisual content, as well as media systems that generate or render media content including mixed reality, mediated reality, virtual reality, and / or augmented reality, personal systems including personal health systems or personal fitness systems, navigation systems, user interfaces also known as human-machine interfaces, networks including cellular, non-cellular, and optical networks, ad-hoc networks, the Internet, the Internet of Things, virtualized networks, and related software and services as enabling components.

[0264] The device may be installed in an electronic device, such as a mobile terminal, in accordance with the examples of this disclosure. However, it should be understood that a mobile terminal is merely an illustration of an electronic device that would benefit from the examples of implementations of this disclosure, and therefore should not be considered to limit the scope of this disclosure to mobile terminals. In the examples of certain implementations, the device may be installed in a mobile terminal, but other types of electronic devices, such as, but not limited to, mobile communication devices, hand-portable electronic devices, wearable computing devices, portable digital assistants (PDAs), pagers, mobile computers, desktop computers, televisions, gaming devices, laptop computers, cameras, video recorders, GPS devices, and other types of electronic systems, can readily use the examples of this disclosure. Furthermore, the device can readily use the examples of this disclosure regardless of whether it is intended to be a device that provides mobility.

[0265] The term "comprise" is used in this document with a non-exclusive, inclusive meaning. That is, any reference to "X comprises Y" indicates that X may have only one Y, or it may have two or more Ys. If "comprise" is intended to be used in an exclusive sense, it will be clarified in context by referring to "comprising only one" or by using "consisting."

[0266] In this explanation, the terms “connect,” “couple,” and “communication,” as well as their derivatives, mean being in an operationally connected / coupled / communicating state. That is, it should be recognized that any number or any combination of intervening components may exist (including the absence of intervening components) to provide direct or indirect connection / coupling / communication. Any such intervening components may include hardware and / or software components.

[0267] As used herein, the terms “determine / determining” (and their grammatical variations) may include at least the following: calculating, computing, processing, deriving, measuring, investigating, identifying, looking up (e.g., looking up in a table, database, or other data structure), ascertaining, etc. Similarly, the term “decision” may include the following: receiving (e.g., receiving information), accessing (e.g., accessing data in memory), obtaining, etc. Similarly, “determine / determining” may include the following: resolving, selecting, choosing, establishing, etc.

[0268] In this explanation, references are made to various examples. Descriptions of features or functions related to an example indicate that those features or functions are present in that example. The use of the terms “example,” “for example,” “can,” or “may,” whether explicitly stated or not, indicates that such features or functions are present in at least the example being described, and that, whether described or not, they may, though not necessarily, be present in some or all, other examples. Thus, “example,” “for example,” “can,” or “may” refer to a specific instance in an example of a certain class. The characteristics of an instance can be characteristics of that instance alone, characteristics of the class, or characteristics of a subclass of a class that contains some but not all instances of that class. Therefore, a feature described by referring to one example but not another implicitly discloses that, if possible, it may be used in that other example as part of a practical combination, but is not necessarily required to be used in that other example.

[0269] Examples have been described in the preceding paragraphs with reference to various examples, but it should be recognized that modifications to the given examples can be made without departing from the scope of the claims.

[0270] The features described in the preceding explanation may be used in combinations other than those explicitly described above.

[0271] While the functions were described with reference to specific features, those functions may be implementable by other features, whether described or not.

[0272] The features were explained by referring to specific examples, but those features may exist in other examples, whether explained or not.

[0273] The terms "a", "an", or "the" are used in this document in an inclusive rather than exclusive sense. That is, a reference to X having an / a / the Y is intended to indicate that X may have only one Y or may have two or more Ys, unless the context clearly indicates to the contrary. When it is intended to use "a", "an", or "the" with an exclusive meaning, it will be apparent from the context. In some situations, the use of "at least one" or "one or more" may be used to emphasize an inclusive meaning, but the absence of these terms should not be taken to imply any exclusive meaning.

[0274] The presence of a feature (or combination of features) in a claim is a reference to that feature or (combination of features) itself and, likewise, to features (equivalent features) that achieve substantially the same technical effect. Equivalent features include, for example, modifications that achieve substantially the same result in substantially the same way. Equivalent features include, for example, features that perform substantially the same function in substantially the same way to achieve substantially the same result.

[0275] In this description, in order to describe the characteristics of examples, adjectives or adjective phrases have been used to make references to various examples. Such descriptions of characteristics related to an example are intended to indicate that the characteristic exists in some of the examples that have been precisely described and in other examples that are substantially described.

[0276] The above description illustrates some examples of the present disclosure; however, those skilled in the art will know of possible alternative structures and methods, which provide equivalent functionality to certain examples of such structures and methods described herein and have been omitted from the above description for brevity and clarity. Nevertheless, the above description should be read as implicitly including references to such alternative structures and methods, which provide equivalent functionality unless such alternative structures or methods are explicitly excluded in the above description of the examples of the present disclosure.

[0277] While the above specification endeavors to draw attention to features considered important, it should be understood in advance that the applicant may seek protection under the claims for any patentable feature or combination of features, whether or not it is emphasized, with reference to and / or shown in the drawings.

Claims

1. At least one processor, and A device including at least one memory that stores instructions, When the instruction is executed by the at least one processor, the device: Receiving secondary radio link failure information, wherein the secondary radio link failure information indicates a failure in the secondary radio link between the user equipment and at least one source secondary node while the user equipment is configured to conditionally access at least one target secondary node, and the user equipment has dual connectivity with the source master node and the source secondary node, To determine a plurality of proposed target primary cells in a secondary cell group prepared by at least one target secondary node for conditional access by user equipment, Determining assistance information based at least in part on the received secondary radio link failure information, wherein the assistance information assists the at least one target secondary node in determining which at least one of the plurality of proposed target primary cells in the secondary cell group is prepared by the at least one target secondary node for conditional access by user equipment. Transmit, directly or indirectly, information indicating the plurality of proposed target primary cells of the secondary cell group and the determined assistance information to at least one target secondary node. A device that performs an action.

2. The apparatus according to claim 1, wherein the assistance information includes priority information for the plurality of proposed target primary cells in the secondary cell group for preparation by the at least one target secondary node for conditional access by user equipment.

3. The apparatus according to claim 1 or 2, wherein the assistance information includes information indicating the number of times the proposed target primary cell in the secondary cell group was the correct choice for conditional access by the user device.

4. The apparatus according to claim 1, wherein transmitting information indicating the plurality of proposed target primary cells of the secondary cell group and the determined assistance information includes transmitting at least one SgNB Change Required message and / or at least one SgNB Addition Request message.

5. The apparatus according to claim 1, wherein the information indicating the plurality of proposed target primary cells in the secondary cell group includes at least one cell identity.

6. At least one processor, and A device including at least one memory that stores instructions, When the instruction is executed by the at least one processor, the device: Receiving information indicating a plurality of proposed target primary cells in a secondary cell group prepared by the target secondary node for conditional access by user equipment, and assistance information configured to help the target secondary node determine which of the plurality of proposed target primary cells in the secondary cell group is prepared by the target secondary node for conditional access by user equipment, wherein the assistance information is determined at least in part on secondary radio link failure information associated with the target secondary node. Based at least in part on the received assistance information, determine at least one of the multiple proposed target primary cells of the secondary cell group to be prepared for conditional access by the user device, To send conditional access configuration information indicating the at least one determined target primary cell of the secondary cell group to the master node. A device equipped with the following features.

7. The apparatus according to claim 6, wherein the assistance information includes priority information for the plurality of proposed target primary cells in the secondary cell group for preparation by the at least one target secondary node for conditional access by a user device.

8. The apparatus according to claim 6, wherein the assistance information includes information indicating the number of times the proposed target primary cell of the secondary cell group was the correct choice for conditional access by the user device.

9. The apparatus according to claim 6, wherein receiving the information indicating the plurality of proposed target primary cells in the secondary cell group and the assistance information includes receiving at least one SgNB Addition Request message.

10. The apparatus according to claim 6, wherein the assistance information is generated by a source master node or a source secondary node.

Images