Conditional access

Abstract

1. A user equipment comprising: means for transmitting, when a secondary radio link failure occurs in the user equipment while the user equipment is configured to conditionally access a target secondary node, information indicating whether at least one measurement report for at least one target primary cell of a secondary cell group of the target secondary node, detectable by the user equipment, was transmitted by the user equipment after the user equipment was configured to conditionally access the target secondary node and before the secondary radio link failure occurred.

Description

Technical Field

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

Background Art

[0002] A wireless network comprises a plurality of network nodes including terminal nodes and access nodes. Communication between a terminal node and an access node 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, a user equipment is provided, and the user equipment means for transmitting information indicating whether at least one measurement report of at least one target primary cell of a secondary cell group of the target secondary node, which is detectable by the user equipment when a secondary radio link failure occurs while the user equipment is configured to conditionally access the target secondary node, has been transmitted by the user equipment before the secondary radio link failure occurs after the user equipment is configured to conditionally access the target secondary node.

[0005] In some examples, the user equipment means for determining that a secondary radio link failure has occurred while the user equipment is configured to conditionally access the target secondary node, and means for determining at least one detectable target primary cell of a secondary cell group of the target secondary node and an associated radio signal measurement at the time of the secondary radio link failure. A means for determining whether, after a user device has been configured to conditionally access a target secondary node, at least one measurement report has been sent for at least one discoverable target primary cell in the secondary cell group before a secondary radio link failure occurs. It is equipped with.

[0006] In some examples, determining at least one detectable target primary cell of a secondary cell group involves determining N target primary cells of the secondary cell group that have the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

[0007] In some cases, transmitting information involves transmitting at least one SCG failure information message.

[0008] Methods are provided, though not necessarily all, according to various embodiments, and the methods are The system includes sending information from the user device to indicate whether, when a secondary radio link failure occurs in the user device while the user device is configured to conditionally access the target secondary node, at least one measurement report for at least one target primary cell in the secondary cell group of the target secondary node, which is detectable by the user device, was sent by the user device after the user device was configured to conditionally access the target secondary node but before the secondary radio link failure occurred.

[0009] In some cases, the method is Determining that a secondary wireless link failure occurred while the user equipment was configured to conditionally access the target secondary node, To determine at least one detectable target primary cell and associated radio signal measurement of the secondary cell group of the target secondary node in the event of a secondary radio link failure, After the user equipment is configured to conditionally access the target secondary node, it is determined whether at least one measurement report was sent for at least one discoverable target primary cell in the secondary cell group before a secondary radio link failure occurred. Includes.

[0010] In some examples, determining at least one detectable target primary cell of a secondary cell group involves determining N target primary cells of the secondary cell group that have the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

[0011] In some cases, transmitting information involves transmitting at least one SCG failure information message.

[0012] In various embodiments, though not necessarily all, a computer program is provided that includes instructions, and the instructions are at least as follows: The purpose is to cause the device to send information from the user device to indicate whether, when a secondary radio link failure occurs in the user device while the user device is configured to conditionally access the target secondary node, at least one measurement report for at least one target primary cell in the secondary cell group of the target secondary node, which is detectable by the user device, was sent after the user device was configured to conditionally access the target secondary node but before the secondary radio link failure occurred.

[0013] In some examples, a computer program contains instructions, and an instruction consists of at least, Determining that a secondary wireless link failure occurred while the user equipment was configured to conditionally access the target secondary node, To determine at least one detectable target primary cell and associated radio signal measurement of the secondary cell group of the target secondary node in the event of a secondary radio link failure, After the user equipment is configured to conditionally access the target secondary node, it is determined whether at least one measurement report was sent for at least one discoverable target primary cell in the secondary cell group before a secondary radio link failure occurred. This is intended to have the device perform the action.

[0014] In some examples, determining at least one detectable target primary cell of a secondary cell group involves determining N target primary cells of the secondary cell group that have the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

[0015] In some cases, transmitting information involves transmitting at least one SCG failure information message.

[0016] In various embodiments, though not necessarily all, the apparatus is provided, and the apparatus is A means for receiving information indicating whether, when a secondary radio link failure occurs in the user device while the user device is configured to conditionally access the target secondary node, at least one measurement report for at least one target primary cell of the secondary cell group of the target secondary node, which is detectable by the user device, was transmitted by the user device after the user device was configured to conditionally access the target secondary node and before the secondary radio link failure occurred, Means for adjusting at least one parameter configured to control a measurement event in a user equipment that triggers the preparation of at least one target primary cell of a secondary cell group of a target secondary node for conditional access by the user equipment, based at least in part on the received information comprises.

[0017] In some examples, the apparatus comprises means for transmitting information for configuring the user equipment using the at least one adjusted parameter.

[0018] In some examples transmitting the information comprises transmitting at least one RRC reconfiguration message.

[0019] In some examples receiving the information comprises receiving information indicating N target primary cells of a secondary cell group of a target secondary node having the strongest radio signal measurement, when a secondary radio link failure occurs, where N is a positive integer.

[0020] In some examples receiving the information comprises receiving at least one SCG failure information message.

[0021] In some examples, the apparatus comprises means for determining, based at least in part on the received information, that at least one measurement report has been transmitted by the user equipment for at least one target primary cell of a secondary cell group of a target secondary node that is detectable by the user equipment when a secondary radio link failure occurs in the user equipment, and that at least one target primary cell of the secondary cell group has not been prepared by the target secondary node for conditional access by the user equipment Adjusting at least one parameter includes adjusting at least one parameter based at least in part on a determination.

[0022] In some examples, the apparatus comprises means for determining that at least one measurement report for at least one target primary cell of a secondary cell group of a target secondary node, detectable by a user equipment, is not transmitted by the user equipment when a secondary radio link failure occurs in the user equipment based at least in part on received information. Adjusting at least one parameter includes adjusting at least one parameter based at least in part on a determination.

[0023] According to various embodiments, although not necessarily all, a method is provided that receiving information indicating whether at least one measurement report for at least one target primary cell of a secondary cell group of a target secondary node, detectable by a user equipment, was transmitted by the user equipment before a secondary radio link failure occurs after the user equipment is configured to conditionally access the target secondary node and while a secondary radio link failure occurs in the user equipment; and adjusting at least one parameter configured to control a measurement event in the user equipment to trigger preparation of at least one target primary cell of a secondary cell group of the target secondary node for conditional access by the user equipment based at least in part on the received information. comprising.

[0024] In some examples, the method includes transmitting information for configuring the user equipment using the at least one adjusted parameter.

[0025] In some cases, transmitting information involves transmitting at least one RRC reconfiguration message.

[0026] In some examples, receiving information involves receiving information that indicates N target primary cells in a secondary cell group of a target secondary node having the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

[0027] In some cases, receiving information includes receiving at least one SCG failure information message.

[0028] In some cases, the method is Based at least in part on the received information, the system includes determining that when a secondary radio link failure occurs in the user equipment, at least one measurement report was transmitted by the user equipment for at least one target primary cell in the secondary cell group of the target secondary node, which is detectable by the user equipment, and that at least one target primary cell in the secondary cell group was not prepared by the target secondary node for conditional access by the user equipment. Adjusting at least one parameter includes adjusting at least one parameter based at least partially on the determination.

[0029] In some cases, the method is Based at least in part on the received information, the system includes determining that when a secondary radio link failure occurs in the user equipment, at least one measurement report was not transmitted by the user equipment for at least one target primary cell in the secondary cell group of the target secondary node, which is detectable by the user equipment. Adjusting at least one parameter includes adjusting at least one parameter based at least partially on the determination.

[0030] In various embodiments, though not necessarily all, a computer program is provided that includes instructions, and the instructions are at least as follows: When a secondary radio link failure occurs in the user device while the user device is configured to conditionally access the target secondary node, information is received to indicate whether at least one measurement report for at least one target primary cell of the secondary cell group of the target secondary node, which is detectable by the user device, was transmitted by the user device after the user device was configured to conditionally access the target secondary node and before the secondary radio link failure occurred. Based at least in part on the received information, adjust at least one parameter configured to control a measurement event in the user device that triggers the preparation of at least one target primary cell in the secondary cell group of the target secondary node for conditional access by the user device. This is intended to allow the device to perform the action.

[0031] In some examples, a computer program contains instructions, and an instruction consists of at least, This is intended to cause the device to transmit information for configuring user equipment using at least one adjusted parameter.

[0032] In some cases, transmitting information involves transmitting at least one RRC reconfiguration message.

[0033] In some examples, receiving information involves receiving information that indicates N target primary cells in a secondary cell group of a target secondary node having the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

[0034] In some cases, receiving information includes receiving at least one SCG failure information message.

[0035] In some examples, a computer program contains instructions, and an instruction consists of at least, The device is to perform the following actions, at least in part, based on the received information, to determine that when a secondary radio link failure occurs in the user equipment, at least one measurement report has been transmitted by the user equipment for at least one target primary cell in the secondary cell group of the target secondary node, which is detectable by the user equipment, and that at least one target primary cell in the secondary cell group was not prepared by the target secondary node for conditional access by the user equipment. Adjusting at least one parameter includes adjusting at least one parameter based at least partially on the determination.

[0036] In some examples, a computer program contains instructions, and an instruction consists of at least, The purpose is to cause the device to determine, at least partially based on the received information, that when a secondary radio link failure occurs in the user device, at least one measurement report was not transmitted by the user device for at least one target primary cell in the secondary cell group of the target secondary node, which is detectable by the user device. Adjusting at least one parameter includes adjusting at least one parameter based at least partially on the determination.

[0037] 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.

[0038] 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.

[0039] Examples of what is claimed in the attached claims are provided, although not necessarily all examples.

[0040] 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.

[0041] The description of the function should also be given further consideration to disclosing any suitable means for performing that function.

[0042] Several examples are illustrated here with reference to the attached drawings. [Brief explanation of the drawing]

[0043] [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 6A] 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]

[0044] 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.

[0045] definition Master Node (MN): A network node that provides control plane connectivity to the core network.

[0046] Master Cell Group (MCG): A group of cells associated with an MN, including PCells and SCells.

[0047] Secondary Node (SN): A network node that provides additional wireless resources to the UE, but is not an MN.

[0048] Secondary Cell Group (SCG): A group of cells associated with a SN, including PSCells and SCells.

[0049] PCell: A cell for uplink / downlink connections to the MN. It is the MCG cell used to initiate initial access to the MN.

[0050] PSCell: A cell for uplink / downlink connections to the SN. The SCG cell used to initiate initial access to the SN.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] A can includes one or more reporting configurations associated with one or more measurement objects and one or more measurement identities.

[0057] can contains MeasConfig information elements as defined in TS 38.331.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Access node 120 is a cellular wireless transceiver. Terminal node 110 is a cellular wireless transceiver.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] In this example, network 100 may include a combination of E-UTRAN and NG-RAN.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] In this example, the UE168 can have additional wireless resources using dual connectivity (DC).

[0071] 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.

[0072] In the example, a change to the primary cell of a secondary cell group (SCG) may be configured. UE168 may be configured with execution conditions for a handover to implement an SN change to one or more target SN166. Thus, UE168 may be configured to conditionally access one or more target SN166.

[0073] In the example, a starting node, for example, source MN172 or source SN170, may be configured to control a measurement event in UE168 that triggers the preparation of at least one target primary cell (PSCell) in a secondary cell group of target SN166 for conditional access by UE168, and / or to efficiently and / or intelligently determine at least one parameter involved in controlling it.

[0074] Figure 2 shows an example of method 200.

[0075] In the example, Figure 2 could be conceivable to illustrate multiple methods. For example, Figure 2 could illustrate 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.

[0076] One or more of the features discussed in relation to Figure 2 may be found in one or more of the other figures.

[0077] 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.

[0078] 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.

[0079] In the example shown, the terminal node 110 and the three access nodes 120 can send 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 SN170, and target SN166.

[0080] In the example shown in Figure 2, the UE168 has dual connectivity with both source MN172 and source SN170. However, in some examples, the UE168 does not have dual connectivity.

[0081] In the example shown in Figure 2, UE168 is configured to conditionally access target SN166.

[0082] UE168 can be configured to conditionally access target SN166 in any appropriate manner using any appropriate method. For example, UE168 can receive any appropriate configuration information to configure UE168 to access target SN166 if at least one criterion is met.

[0083] 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.

[0084] In the example, accessing a PSCell or any other suitable cell involves performing a random access procedure with respect to the cell.

[0085] In the example, accessing a PSCell or any other suitable cell involves establishing a connection to the cell.

[0086] 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.

[0087] One UE168 is shown in the example in Figure 2, but the example may include any appropriate number of UE168s.

[0088] Similarly, the example may include any appropriate number of network nodes.

[0089] 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.

[0090] In the example, Method 200 and / or at least a part of Method 200 may be considered a method for enhancing or improving measurement reporting by UE.

[0091] In the example, method 200 and / or at least a part of method 200 may be considered a method for enhancing or improving the determination of parameters about the configuration of the UE for conditional access to the target SN.

[0092] In the example shown, the location of the block indicates the entity that performs the action. For example, block 202 is performed by / in UE168.

[0093] 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.

[0094] In some cases, method 200 can be considered an SN initiation; that is, in some cases, method 200 can be initiated by and / or include source SN170. For example, method 200 can be part of a CPAC method / process / procedure for SN initiation.

[0095] In the example shown, method 200 is an SN initiation, block 210 is carried out by source SN, and block 208 includes source SN170.

[0096] In some cases, method 200 can be considered an MN initiation. That is, in some cases, method 200 can be initiated by source MN172 and / or without the involvement of source SN170. For example, method 200 can be part of a CPAC method / process / procedure for MN initiation.

[0097] In such an example, block 210 is implemented in source MN172, while block 208 does not involve source SN170.

[0098] In block 202, method 200 includes determining that a secondary radio link failure (S-RLF) has occurred while UE168 is configured to conditionally access target SN166.

[0099] Determining whether S-RLF has occurred can be done in any appropriate manner using any appropriate method.

[0100] S-RLF can be any type of S-RLF that occurs for any valid reason. For example, S-RLF can occur while connected to source SN170 or when performing random access to target PSCell.

[0101] In the example, UE168 could be configured to conditionally access target SN166 when UE168 receives and / or applies configuration information to configure UE168 to access target SN166 when at least one criterion is met.

[0102] In the example, UE168 may be configured to conditionally access target SN166 if UE168 is configured with at least one CPAC configuration, for example, if UE168 is configured with at least one CPC or CPA configuration.

[0103] As an example, the example in Figure 3 is referenced.

[0104] Figure 3A shows an exemplary scenario. In the example in Figure 3A, UE168 is located within and serviced by source PSCell188.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] In the example shown, target SN may decide to prepare target PSCell1 190 because target PSCell1 190 has the best reception measurement.

[0110] 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.

[0111] 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.

[0112] Figures 3A and 3B may be used to illustrate S-RLF and S-RLF situations experienced by UE168.

[0113] In the example in Figure 3, the preparation of target PSCells 190 and 192 was premature, as the measurement did not reflect the actual radio state during conditional access execution. Therefore, in the example in Figure 3, S-RLF could have been avoided if the parameters controlling the measurement event in the UE that triggers the preparation of target PSCells had been adjusted / different.

[0114] Returning to the example in Figure 2, in block 204, method 200 includes determining at least one detectable target PSCell 228 and associated radio signal measurement of target SN166 during S-RLF. The radio signal measurement may include a radio signal power measurement.

[0115] Determining at least one detectable target PSCell228 and associated radio signal measurement of target SN166 during S-RLF can be carried out in any suitable manner using any suitable method.

[0116] In the example, a detectable target PSCell228 is a target PSCell228 from which UE168 can receive at least one signal.

[0117] In the example, a detectable target PSCell228 is a target PSCell228 for which UE168 can determine at least one radio signal measurement.

[0118] In the example, the detectable target PSCell228 is a target PSCell from which UE168 can receive at least one signal having a received signal power of a certain value or greater. Any appropriate value can be used.

[0119] In some examples, a detectable target PSCell228 is a target PSCell from which UE168 can receive at least one signal having a received signal power of -156 dBm or greater.

[0120] A detectable target PSCell228 can be thought of as a measurable target PSCell and / or identifiable target PSCell and / or observable target PSCell and / or distinguishable target PSCell and / or perceptible target PSCell, etc.

[0121] A detectable target PSCell228 can be considered a target PSCell that can be detected by UE168 when S-RLF occurs.

[0122] The radio signal measurement 230 may include any one or more appropriate measurements. For example, the radio signal measurement 230 may include any one or more appropriate measurements indicating the radio power of at least one signal received from and / or in relation to the target SN166 and / or target PSCell.

[0123] In the example, the radio signal measurement 230 includes at least one received signal received power (RSRP) and / or at least one reference signal received quality (RSRQ) and / or at least one signal-to-interference and noise ratio (SINR) measurement.

[0124] In the example, the radio signal measurement 230 can be considered in relation to the target PSCell of target SN166, because the radio signal measurement 230 is performed with respect to and / or in relation to at least one signal received from the target PSCell of target SN166.

[0125] In the example, the radio signal measurement 230 can be considered in relation to the target PSCell of target SN166, because the radio signal measurement indicates, for example, the power of at least one received radio signal from the target PSCell.

[0126] In the example, the S-RLF period includes the period before and / or after the S-RLF occurs and / or the period before and when the S-RLF occurs. Therefore, in the example, the S-RLF period includes the period before the S-RLF occurs and / or the period after the S-RLF occurs.

[0127] Any suitable period before and / or after the occurrence of S-RLF may be used. For example, any suitable period provides appropriate information regarding at least one detectable target PSCell228 of target SN166 and associated radio signal measurements.

[0128] For example, a period ranging from 1 second to 30 minutes may be used.

[0129] For example, a period ranging from 30 seconds to 20 minutes may be used.

[0130] For example, a period ranging from 1 to 15 minutes may be used.

[0131] For example, a period of 5 to 10 minutes may be used.

[0132] In the example, the duration can be at least Z microseconds, where Z is a positive integer.

[0133] In the example, the duration can be at least Y milliseconds, where Y is a positive integer.

[0134] In the example, the duration can be at least M seconds, where M is a positive integer.

[0135] In the example, the duration can be at least X minutes, where X is a positive integer.

[0136] Therefore, in the example, block 204 may be thought to include determining at least one detectable target PSCell228 and associated radio signal measurement of target SN166 within the period including when the S-RLF occurred.

[0137] In the example, block 204 includes determining at least one target PSCell from which UE168 can receive at least one signal, and determining at least one radio signal measurement for each of the at least one target PSCell.

[0138] For example, in the example shown in Figure 3, UE168 can determine that target PSCell1 190 and target PSCell2 192 are detectable during S-RLF, and can determine the associated radio signal measurement for PSCell1 190 and PSCell2 192 when S-RLF occurs.

[0139] In some examples, determining at least one detectable target PSCell228 involves determining N target PSCells that have the strongest radio signal measurement during S-RLF, where N is a positive integer.

[0140] N can be any suitable positive integer. For example, N can be in the range of 1 to 64.

[0141] For example, in the example in Figure 3, if N is equal to 1, UE168 will determine PSCell2 192 because PSCell2 192 has the strongest radio signal measurement during S-RLF.

[0142] In block 206, method 200 includes determining whether at least one measurement report 226 for at least one detectable target PSCell 228 was sent after UE 168 is configured to conditionally access target SN 166, but before S-RLF occurs.

[0143] In the example, block 206 includes determining whether at least one measurement report 226 for at least one detectable target PSCell 228 was reported to a network node, such as source MN172 or source SN170, after UE168 is configured to conditionally access target SN166, but before S-RLF occurs.

[0144] In the example, block 206 includes determining whether at least one measurement report 226 for at least one detectable target PSCell 228 has been sent to the network, for example, source MN172 or source SN170, after UE168 is configured to conditionally access target SN166, but before S-RLF occurs.

[0145] Block 206 can be implemented in any suitable manner using any suitable method.

[0146] In the example, in block 206, UE168 determines from logged / stored information whether UE168 sent / reported at least one measurement report 226 for at least one detectable target PSCell228 during the period between when UE168 is configured to conditionally access target SN166 and when S-RLF occurs.

[0147] For example, UE168 can determine from logged / stored information whether it sent / reported at least one measurement report 226 for at least one detectable target PSCell228 during the period between when UE168 is configured to conditionally access target SN166 and when S-RLF occurs.

[0148] For example, in the example in Figure 3, UE168 will determine whether it has reported / sent at least one measurement report 226 for PSCell1 190 and PSCell2 192 after UE168 has been configured to conditionally access target SN166 and before S-RLF occurs.

[0149] A measurement report can be considered any appropriate indication of one or more measurements performed by the UE168. In an example, the measurement report includes an indication of at least one radio signal measurement for at least one target PSCell.

[0150] In the example, the measurement report may include a measurement report as defined in 3GPP TS 38.331.

[0151] In block 208, method 200 includes transmitting information 224 that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was transmitted by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred, when an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166.

[0152] The result. Figure 2 shows method 200, and method 200 is, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, the system includes transmitting information 224 that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was transmitted by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred.

[0153] When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, information 224 indicating whether at least one measurement report 226 for at least one target PSCell 228 of SN166, detectable by UE168, was sent by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred, may include any appropriate information.

[0154] For example, information 224 may include any appropriate information to enable a network node, such as source SN172 or source MN170, to determine whether at least one measurement report was sent by UE168 while UE168 was configured to conditionally access target SN166 and before S-RLF occurred, for each target PSCell228 of SN166 that can be detected by UE168 at the time of S-RLF.

[0155] In the example, information 224 may include a value for each detectable target PSCell228 that indicates the number of measurement reports sent by UE168 for each detectable target PSCell228 while UE168 is configured to conditionally access target SN166 and before S-RLF occurs.

[0156] In the example, information 224 may include a binary indicator for each detectable target PSCell 228 that indicates whether at least one measurement report 226 was sent by UE 168 while UE 168 is configured to conditionally access target SN 166 and before S-RLF occurs.

[0157] In some examples, method 200 includes transmitting associated radio signal measurements for at least one detectable target PSCell 228. The associated radio signal measurements for at least one detectable target PSCell 228 may be transmitted in block 208 together with information 224.

[0158] Block 208 can be implemented in any suitable way using any suitable method. In the example, transmitting information 224 in block 208 includes transmitting at least one signal and / or message.

[0159] In some cases, transmitting information 224 includes transmitting at least one SCG failure information message.

[0160] Information 224 may be transmitted in block 208 and may be sent to any suitable network node, for example, source MN172 or source SN170. Therefore, in some examples, transmitting information 224 includes sending information 224 to source MN172 or source SN170.

[0161] In the example, from the perspective of source SN170 or source MN172, block 208 includes receiving information 224 that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN166 and before the S-RLF occurs, when an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166.

[0162] In the example, receiving information 224 from the perspective of source SN170 or source MN172 involves receiving information 224 that, in S-RLF, indicates N target PSCells of target SN166 having the strongest radio signal measurement, where N is a positive integer.

[0163] In the example, receiving information 224 includes receiving at least one SCG failure information message.

[0164] In the example, information 224 may be received from any appropriate number of different UE168s.

[0165] In the example, information 224 may be received and / or collected over any appropriate period of time. For example, information 224 may be received from multiple UEs 168 over a period long enough to allow sufficient information 224 to be received to enable method 200 to be carried out. For example, information 224 may be received over a period long enough to allow sufficient information 224 to be received to enable at least one parameter 232 to be adjusted in block 204.

[0166] 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.

[0167] In the example, information 224 may be received over the period of Key Performance Indicator (KPI) collection.

[0168] In block 210, method 200 includes adjusting at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168, at least in part, based on the received information 224.

[0169] As a result, Figure 2 shows method 200, and method 200 is, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, information 224 is received that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN and before the S-RLF occurs. Based at least in part on the received information 224, adjust at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168. Includes.

[0170] Adjusting at least one parameter 232 can be thought of as changing and / or modifying and / or correcting and / or adjusting and / or adapting at least one parameter 232.

[0171] Block 210 can be implemented in any suitable manner using any suitable method.

[0172] In the example, adjusting at least one parameter 232 based at least in part on the received information 224 includes adjusting at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168, and as a result, target SN166 receives relevant radio measurements for the preparation of at least one target PSCell, for example, radio measurements that more accurately reflect the radio conditions at at least one previous S-RLF.

[0173] In the example, adjusting at least one parameter 232 based at least in part on the received information 224 includes adjusting at least one parameter 232 configured to control a measurement event in UE 168 that triggers the preparation of at least one target PSCell of target SN 166 for conditional access by UE 168, so that the measurement event occurs when a radio measurement of the strongest detectable target PSCell 228 indicated in the information 224 reflects the conditions when at least one previous S-RLF occurred.

[0174] In other words, in the example, at least one parameter 232 is adjusted to cause the measurement event that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168 to at least one UE168 from which information 224 is received to occur earlier or later, in order to allow S-RLF to be avoided.

[0175] For example, in the example in Figure 3, at least one parameter such as A3_prep_offset may be adjusted so that the measurement event that triggers the preparation of the target PSCell occurs after time t2', at which time PSCell2 192 has the strongest radio measurement, allowing PSCell2 192 to be prepared for conditional access by UE168 and avoiding S-RLF occurring for UE168 in a similar situation.

[0176] In the example, it can be assumed that the statistics collected remain nearly constant over the collection period. For example, a user typically moves along a fixed street pedestrian lane that is deterministic and not random.

[0177] In the example, adjusting at least one parameter 232 includes adjusting at least one parameter in the configuration information for UE168. For example, adjusting at least one parameter 232 could include adjusting at least one of the A3 measurement event offset, hysteresis, or time-to-trigger (TTT).

[0178] For example, adjusting at least one parameter 232 could include adjusting at least one of the threshold, hysteresis, or TTT of the A4 and / or A5 and / or B1 measurement events.

[0179] In some examples, adjusting at least one parameter 232 includes sending information to configure the UE168 using the adjusted at least one parameter 232.

[0180] UE168 can be the UE168 from which information 224 was received, or it can be the UE168 from which information 224 was not received.

[0181] Sending information to configure the UE168 with at least one adjusted parameter 232 can be done in any suitable way using any suitable method.

[0182] In the example, transmitting information to configure UE168 using at least one adjusted parameter 232 includes transmitting configuration information.

[0183] In some examples, transmitting information to configure UE168 with at least one adjusted parameter 232 includes transmitting at least one RRC reconfiguration message.

[0184] In the example, tuning at least one parameter 232 in block 210 involves using a mobility robustness optimization algorithm and / or artificial intelligence and / or machine learning techniques.

[0185] Any one or more appropriate parameters 232 may be adjusted. For example, any one or more appropriate parameters 232 may be adjusted to control a measurement event in UE168 that triggers the preparation of at least one PSCell of target SN166 for conditional access by UE168.

[0186] For example, parameters may include offset, hysteresis, threshold, and / or TTT.

[0187] In the example, the measurement event in UE168 that triggers the preparation of at least one PSCell can include any suitable measurement event. For example, the measurement event could include A3, A4, A5 and / or B1 measurement events.

[0188] In the example, a measurement event in UE168 that triggers the preparation of at least one PSCell includes, for example, a measurement event that causes UE168 to send at least one signal and / or message to source MN172 or source SN170, resulting in the preparation of at least one target PSCell.

[0189] For example, a measurement event in UE168 can cause the UE168 to send at least one measurement report message to, for example, source MN172 or source SN170.

[0190] For example, a measurement event in UE168 could include a measurement event in UE168 that causes at least one measurement report to be sent to UE168.

[0191] In the example, the measurement event in UE168 may include the measurement signal intensity for at least one target PSCell that is within a predetermined value of the measurement signal intensity of the source PSCell.

[0192] In some cases, a measurement event in UE168 may include a measurement signal intensity for at least one target PSCell that is greater than a certain threshold.

[0193] In some examples, a measurement event in UE168 may include the measured signal intensity for at least one target PSCell greater than a certain threshold and the measured signal intensity for source PSCells less than another threshold.

[0194] In some examples, Method 200 includes determining by Source SN170 or Source MN172, at least in part, based on the received information 224, that when an S-RLF occurs in UE168, at least one measurement report 226 has been sent by UE168 for at least one target PSCell 228 of target SN166 that is detectable by the UE, and that at least one target PSCell 228 has not been prepared by target SN166 for conditional access by UE168, and adjusting at least one parameter 232, at least in part based on the determination.

[0195] In the example, source SN170 or source MN172 can determine, in any appropriate manner using any appropriate method, that at least one target PSCell228 was not prepared by target SN166 for conditional access by UE168.

[0196] In the example, source SN170 or source MN172 may receive information indicating whether target SN166 has been prepared for conditional access by UE168. For example, source SN170 or source MN172 may (or may not) receive conditional access configuration information for target PSCell228.

[0197] If, at least in part, based on the received information 224, it is determined that when S-RLF occurs in UE168, at least one measurement report 226 was sent by UE168 for at least one detectable target PSCell228, and at least one target PSCell227 was not prepared by target SN166 for conditional access by UE168, then at least one parameter 232 may be adjusted in any appropriate manner.

[0198] For example, at least one parameter 232 may be adjusted so that UE168 performs a measurement event that later triggers the preparation of at least one PSCell in target SN166 in a similar situation.

[0199] This is advantageous in examples such as the one shown in Figure 3A.

[0200] In some examples, method 200 includes determining by source SN170 or source MN172, at least in part, based on the received information 224, that when an S-RLF occurs in UE168, at least one measurement report 226 was not sent by UE168 for at least one target PSCell 228 of target SN166 that is detectable by UE168, and adjusting at least one parameter 232, at least in part, based on the determination.

[0201] Based at least in part on the received information 224, if it is determined that when S-RLF occurs in UE168, at least one measurement report 226 was not sent by UE168 for at least one target PSCell 228 of target SN166 that is detectable by UE168, then at least one parameter 232 may be adjusted in any appropriate manner.

[0202] For example, at least one parameter 232 may be adjusted so that UE168 performs a measurement event that triggers the preparation of at least one PSCell in target SN166 early in a similar situation.

[0203] This is advantageous in cases of rapid degradation of serving / source PSCell wireless link quality, where the measurement event does not trigger the transmission of a measurement report.

[0204] In the example, method 200 can then proceed according to a conditional access method / process / procedure using the adjusted parameters in UE168 to trigger UE168 to prepare at least one target PSCell for conditional access and configure UE168 to conditionally access target SN166.

[0205] 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, Figures 6A and 6B.

[0206] In the example, method 200 can be repeated any appropriate number of times.

[0207] 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).

[0208] 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.

[0209] 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).

[0210] 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.

[0211] The examples in this disclosure are advantageous and provide technical benefits.

[0212] For example, the disclosure allows for the intelligent control of the trigger for preparing the target PSCell in order to avoid S-RLF.

[0213] For example, the disclosure illustrates how to mitigate wireless link failures caused by preparing incorrect candidate PSCells.

[0214] Figure 4 shows an example of method 400.

[0215] 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.

[0216] In the example, method 400 may be carried out by a UE168 such as the UE168 in Figure 2.

[0217] In block 402, method 400 includes transmitting information 224 that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was transmitted by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred, when an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166.

[0218] As a result, Figure 4 shows method 400, and method 400 is, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, the system includes transmitting information 224 that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was transmitted by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred.

[0219] Figure 5 shows an example of method 500.

[0220] 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 Figure 7A and / or Figure 7B.

[0221] In the example, method 500 can be carried out by source SN170, such as source SN170 in Figure 2.

[0222] In the example, method 500 may be carried out by source MN172, such as source MN172 in Figure 2.

[0223] In block 502, method 500 includes receiving information 224 that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN166 and before the S-RLF occurs, when an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166.

[0224] In block 504, method 500 includes adjusting at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168, at least in part based on the received information 224.

[0225] As a result, Figure 5 shows method 500, which is: When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, information 224 is received that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN and before the S-RLF occurs. Based at least in part on the received information 224, adjust at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168. Includes.

[0226] Figure 6 shows an example of method 600.

[0227] Some examples relate to the Third Generation Partnership Project (3GPP) network. Figure 6 can be considered to illustrate some such examples.

[0228] The following explanation may be considered to illustrate some such examples.

[0229] 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.

[0230] 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.

[0231] 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 2, 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.

[0232] In the example shown in Figure 6, UE168 has dual connectivity with source MN172 and source SN170.

[0233] 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.

[0234] One UE168 is shown in the example in Figure 6, but the example may include any appropriate number of UE168s.

[0235] Similarly, the example may include any appropriate number of network nodes.

[0236] A high-level flowchart is shown in Figure 6.

[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 device 130 is At least one processor 132, At least one memory 134 containing computer program code and Equipped with, At least one memory 134 and computer program code are, at least, by at least one processor 132. When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, the device 130 is configured to transmit information 224 indicating whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, which is detectable by UE168, was transmitted by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred.

[0243] In this example, the device 130 is At least one processor 132, At least one memory 134 containing computer program code and Equipped with, At least one memory 134 and computer program code are, at least, by at least one processor 132. When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, information 224 is received that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN and before the S-RLF occurs. Based at least in part on the received information 224, adjust at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168. The device 130 is configured to perform this action.

[0244] In this example, the device 130 is At least one processor 132, At least one memory 134 containing computer program code and Equipped with, At least one memory stores instructions, and when an instruction is executed by at least one processor 132, the device provides at least, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, the UE168 causes it to send information 224 indicating whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, which is detectable by UE168, was sent by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred.

[0245] In this example, the device 130 is At least one processor 132, At least one memory 134 containing computer program code and Equipped with, At least one memory stores instructions, and when an instruction is executed by at least one processor 132, the device provides at least, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, information 224 is received that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN and before the S-RLF occurs. Based at least in part on the received information 224, adjust at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168. To make 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 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] At least the following, namely, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, the UE168 transmits information 224 indicating whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was transmitted by UE168 after UE168 was configured to conditionally access target SN166 and before the S-RLF occurred. A computer program instruction that causes a device to perform an action, or is intended to perform such an action.

[0248] At least the following, namely, When an S-RLF occurs in UE168 while UE168 is configured to conditionally access target SN166, information 224 is received that indicates whether at least one measurement report 226 for at least one target PSCell 228 of target SN166, detectable by UE168, was sent by UE168 after the UE is configured to conditionally access target SN and before the S-RLF occurs. Based at least in part on the received information 224, adjust at least one parameter 232 configured to control a measurement event in UE168 that triggers the preparation of at least one target PSCell of target SN166 for conditional access by UE168. A computer program instruction that causes a device to perform an action, or is intended to perform such an action.

[0249] Computer program instructions may be contained within a computer program, a non-temporary computer-readable medium, a computer program product, or a machine-readable medium. 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 unit, it may be implemented as one or more separate components / circuit units, 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 7B.

[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 having software (including a digital signal processor), software, and one or more memories that work together to enable a device such as a mobile phone or server to perform various functions, (c) Hardware circuits and / or processors, such as a microprocessor or a part of a microprocessor, that require software (e.g., firmware) for operation, but may not be present when the software is not required for operation. This may refer to one, more, or all of them.

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

[0256] The blocks shown in the attached diagram may represent steps and / or sections of code of a method within the computer program 136. The examples of specific orders for the blocks do not necessarily imply that there is a required or preferred order for the blocks, and the order and arrangement of the blocks may vary. Furthermore, some blocks may be omitted.

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

[0258] Therefore, the apparatus 130 can, for example, When an S-RLF occurs in the UE 168 while the UE 168 is configured to conditionally access the target SN 166, information 224 indicating whether at least one measurement report 226 for at least one target PSCell 228 of the target SN 166, which is detectable by the UE 168, has been transmitted by the UE 168 after the UE 168 is configured to conditionally access the target SN 166 and before the S-RLF occurs.

[0259] Therefore, the apparatus 130 can, for example, Means for receiving information 224 indicating whether at least one measurement report 226 for at least one target PSCell 228 of the target SN 166, which is detectable by the UE 168, has been transmitted by the UE 168 after the UE is configured to conditionally access the target SN and before the S-RLF occurs when an S-RLF occurs in the UE 168 while the UE 168 is configured to conditionally access the target SN 166; and Means for adjusting at least one parameter 232 configured to control a measurement event in the UE 168 to trigger the preparation of at least one target PSCell of the target SN 166 for conditional access by the UE 168 based at least in part on the received information 224 can be provided.

[0260] Systems, devices, methods, and computer programs may use machine learning, which can include statistical learning. Machine learning is a field of computer science that gives a computer the ability to learn without being explicitly programmed. A computer learns from experience E with respect to a class of tasks T and a performance measure P if its performance on the task T measured by P improves with experience E. A computer can often learn from past training data to predict future data. Machine learning includes supervised learning, either wholly or in part, and unsupervised learning, either wholly or in part. Machine learning may enable discrete outputs (e.g., classification, clustering) and continuous outputs (e.g., regression). Machine learning may be implemented using different approaches such as, for example, 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 having one or more hidden layers models a complex relationship between an input vector and an output vector. Support vector machines may be used for supervised learning. A Bayesian network is a directed acyclic graph that represents conditional independence of multiple random variables.

[0261] The examples described above apply as implementable components of automotive systems, telecommunications systems, electronic systems including consumer electronic products, distributed computing systems, audio, visual, and audiovisual content, as well as media systems that produce 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.

[0262] 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.

[0263] 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."

[0264] 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.

[0265] 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.

[0266] 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.

[0267] 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.

[0268] The features described in the preceding explanation may be used in combinations other than those explicitly described above.

[0269] While the functions were described with reference to specific features, those functions may be implementable by other features, whether described or not.

[0270] The features were explained by referring to specific examples, but those features may exist in other examples, whether explained or not.

[0271] The terms “a,” “an,” or “the” are used in this document with an inclusive, not exclusive, meaning. That is, a reference to X having a “a” / an / the Y indicates that X may have only one Y or may have two or more Y, unless explicitly indicated otherwise in the context. If “a,” “an,” or “the” is intended to be used with an exclusive meaning, it will be evident in the context. In some situations, the use of “at least one” or “one or more” may be used to emphasize the inclusive meaning, but the absence of these terms should not be considered to infer any exclusive meaning.

[0272] The presence of a feature (or combination of features) in a claim is a reference to that feature or (combination of features) itself, and similarly to features (equivalent features) that achieve substantially the same technical effect. Equivalent features include, for example, variations of features 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.

[0273] In this explanation, various examples have been referenced using adjectives or adjective phrases to describe their characteristics. Such descriptions of characteristics related to the examples indicate that the characteristics are present in some of the examples specifically described and in other examples substantially described.

[0274] 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.

[0275] 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 user device including at least one memory that stores instructions, When the instruction is executed by the at least one processor, the user device will be: A user device that, when a secondary radio link failure occurs in the user device while the user device is configured to conditionally access the target secondary node, transmits information indicating whether at least one measurement report for at least one target primary cell of the secondary cell group of the target secondary node, which is detectable by the user device, was transmitted by the user device after the user device was configured to conditionally access the target secondary node and before the secondary radio link failure occurred.

2. The user device is Determining that a secondary wireless link failure occurred while the user device was configured to conditionally access the target secondary node, In the event of a secondary radio link failure, determine the at least one detectable target primary cell and associated radio signal measurement of the secondary cell group of the target secondary node, After the user device is configured to conditionally access the target secondary node, it is determined whether at least one measurement report for at least one discoverable target primary cell in the secondary cell group was transmitted before the secondary radio link failure occurred. The user device according to claim 1, which can be further made to perform the following.

3. The user device according to claim 2, wherein determining the at least one detectable target primary cell of a secondary cell group includes determining N target primary cells of the secondary cell group having the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

4. The user device according to claim 1, wherein transmitting the aforementioned information includes transmitting at least one SCG failure information message.

5. 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: When a secondary radio link failure occurs in the user device while the user device is configured to conditionally access the target secondary node, information is received to indicate whether at least one measurement report for at least one target primary cell of the secondary cell group of the target secondary node, detectable by the user device, was transmitted by the user device after the user device was configured to conditionally access the target secondary node and before the secondary radio link failure occurred. Based at least in part on the received information, adjust at least one parameter configured to control a measurement event in the user device that triggers the preparation of at least one target primary cell in the secondary cell group of the target secondary node for conditional access by the user device. A device that performs an action.

6. The apparatus is The apparatus according to claim 5, further capable of transmitting information for configuring user equipment using the adjusted at least one parameter.

7. The apparatus according to claim 6, wherein transmitting the aforementioned information includes transmitting at least one RRC reconstruction message.

8. The apparatus according to claim 5, wherein receiving the aforementioned information includes receiving information indicating N target primary cells of the secondary cell group of the target secondary node having the strongest radio signal measurement in the event of a secondary radio link failure, where N is a positive integer.

9. The apparatus according to claim 5, wherein receiving the aforementioned information includes receiving at least one SCG failure information message.

10. The aforementioned device is Based at least in part on the received information, the user device is further made to determine that, when the secondary radio link failure occurs in the user device, at least one measurement report has been transmitted by the user device for at least one target primary cell in the secondary cell group of the target secondary node, and that at least one target primary cell in the secondary cell group has not been prepared by the target secondary node for conditional access by the user device. The apparatus according to claim 5, wherein adjusting the at least one parameter includes adjusting the at least one parameter based at least in part on the determination.

11. The aforementioned device is Based at least in part on the received information, when the secondary radio link failure occurs in the user equipment, the user equipment is further required to determine that, for at least one target primary cell in the secondary cell group of the target secondary node, the at least one measurement report was not transmitted by the user equipment, which is detectable by the user equipment. The apparatus according to claim 5, wherein adjusting the at least one parameter includes adjusting the at least one parameter based at least in part on the determination.

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