Handling inconsistencies between idle mode measurement configurations of source and target cells during cell reselection - Patent Application 20070122997

Abstract

To provide a system and a method for handling idle mode measurement configuration mismatches when a wireless device performs cell reselection.SOLUTION: In a cellular communication system, an idle mode measurement method performed by a wireless device 512 obtains a first measurement configuration for a first set of carriers including overlapping carriers and / or non-overlapping carriers in a first cell controlled by a base station 506-A, shifts to a dormant state, performs a cell reselection from a first cell to a second cell controlled by a base station 506-B while in the dormant state and while the idle mode measurement duration timer is running, obtains a second measurement configuration for a second set of carriers including overlapping carriers and / or non-overlapping carriers from a second cell, and takes an action in response to the inconsistency between the first measurement configuration and the second measurement configuration.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] SUMMARY The present disclosure relates to idle mode measurements performed by wireless communication devices in cellular communication systems. [Background technology]

[0002] 1. Carrier Aggregation (CA) and Dual Connectivity (DC) in Long Term Evolution (LTE) CA was introduced in LTE in Release 10, allowing a user equipment (UE) to transmit and / or receive information from multiple carrier frequencies via multiple cells, called secondary cells (SCells), and benefit from the existence of non-contiguous and contiguous carriers. In CA terminology, the primary cell (PCell) is the cell to which the UE establishes a radio resource control (RRC) connection or performs handover. In CA, cells are aggregated at the medium access control (MAC) level. The MAC layer is given a specific cell and multiplexes data from different bearers into one transport block sent to that cell. The MAC layer also controls how this process is performed. This is shown in Figure 1.

[0003] An SCell can be "added" (known as "configuration") to a UE using RRC signaling (e.g., RRCConnectionReconfiguration), which takes on the order of a few hundred milliseconds. The cell configured for a UE becomes the "serving cell" for that UE. An SCell may also be associated with an SCell state. When configured / added via RRC, an SCell starts in a deactivated state. In LTE Release 15, an enhanced or evolved Node B (eNB) can indicate activation at configuration or change state at least in RRCReconfiguration, as shown below, an excerpt from 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 36.331 V15.3.0: 1> For each SCell configured for the UE other than the PSCell: 2> If the received RRCConnectionReconfiguration message contains sCellState for the SCell and indicates activation: 3> Configure the lower layers to consider the SCell to be in the active state; 2> Or if the received RRCConnectionReconfiguration message contains sCellState for the SCell and indicates dormant: 3> Configure lower layers to consider the SCell to be in dormant state; 2> In other cases: 3> Configure the lower layers to consider the SCell to be in the inactive state;

[0004] LTE Release 15 introduces a new intermediate state between the deactivated and activated states for enhanced uplink operation. This state is called the dormant state. The MAC Control Element (CE) can be used to change the SCell state between the three states, as shown in Figure 2. There are also timers within the MAC to move the cell between deactivated / activated / dormant. These timers are: sCellHibernationTimer, which transitions a SCell from the active state to the dormant state; sCellDeactivationTimer, which transitions a SCell from an activated state to a deactivated state; dormantSCellDeactivationTimer, which transitions the SCell from dormant state to deactivation state. Activating a SCell at the MAC level takes approximately 20 to 30 milliseconds (ms).

[0005] Once the network understands the need to configure and / or activate a CA, the question is which cell, if any, to configure and / or activate first and / or whether the cell / carrier is good enough in terms of radio quality / coverage (e.g., Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ)). To understand the conditions for SCells or potential SCells on a given available carrier, the network may configure the UE to perform Radio Resource Management (RRM) measurements.

[0006] In general, the network may be assisted by RRM measurements being reported by the UE. The network may configure the UE with a measurement identity (ID) associated with reportConfig with event A1 (serving cell becomes better than a threshold) if this cell is a configured SCell, or A4 (neighbor cell becomes better than a threshold) for carriers that do not have a configured SCell. The measurement object is associated with the carrier on which the network wants measurements. If the network knows the exact cells on which it wants the UE to measure, it can configure a so-called white cell list in the measurement object, so that the UE is only required to measure these cells on that carrier.

[0007] Figure 3 shows the process by which the network decides to set up CA or DC for the UE. The network then configures the UE to perform measurements, and the UE transmits appropriate measurement reports to the network. Based on the received measurement reports, the network makes a decision on SCell addition or SCell activation, and then configures the UE to add the selected SCell.

[0008] With the introduction of DC in Release 12, it was possible to add what is called a Secondary Cell Group (SGC) configuration to the UE. The main benefit would be that the UE could in principle add cells from another eNB. Protocol-wise, this requires different MAC entities, one for each cell group. The UE would have two cell groups, one associated with the PCell (master node) and one associated with the Primary Secondary Cell (PSCell) (of the secondary eNB), and each group could have its own associated SCell.

[0009] Regarding adding a SCell, if the UE is in single connectivity, the RRCConnectionReconfiguration message may carry the cell index, cell identifier, carrier frequency, common parameters, and state information introduced in Release 15 (active or dormant), such that the MAC identifier is optimized, i.e., shorter.

[0010] SCellToAddModList included in RRCConnectionReconfiguration will be exemplified and described below. TIFF0007729866000001.tif151170JPEG0007729866000002.jpg253170

[0011] The procedure for adding (or modifying) an SCell to a Master Cell Group (MCG) in LTE is described by the following excerpt from 3GPP TS 36.331 V15.3.0: 5.3.5.3 Reception of RRCConnectionReconfiguration without mobilityControlInfo by UE If the RRCConnectionReconfiguration message does not contain mobilityControlInfo and the UE is able to comply with the configuration contained in this message, the UE shall: … 1> If the received RRCConnectionReconfiguration contains sCellToAddModList: 2> Perform SCell additions or modifications as specified in 5.3.10.3b; … 5.3.10.3b SCell Addition / Modification UE: 1> For each sCellIndex value contained in either sCellToAddModList or sCellToAddModListSCG that is not part of the current UE configuration (SCell addition): 2> Add SCell corresponding to cellIdentification according to radioResourceConfigCommonSCell and radioResourceConfigDedicatedSCell, both included in either sCellToAddModList or sCellToAddModListSCG; 2> If sCellState is set for the SCell, indicating activation: 3> Configure the lower layers to consider the SCell to be in the active state; 2> Or if sCellState is set for the SCell and indicates dormant: 3> Configure lower layers to consider the SCell to be in dormant state; 2> In other cases: 3> Configure the lower layers to consider the SCell to be in the inactive state; 2> For each measId in the measIdList in VarMeasConfig: 3> if the SCell is not applicable to the relevant measurement; and 3> If the corresponding SCell is included in the cellsTriggeredList defined in the VarMeasReportList for this measId: 4> Remove the corresponding SCell from the cellsTriggeredList defined in VarMeasReportList for this measId; 1> For each sCellIndex value contained in either the sCellToAddModList or the sCellToAddModListSCG that is part of the current UE configuration (SCell modification): 2> Modify the SCell configuration according to the radioResourceConfigDedicatedSCell contained in either sCellToAddModList or sCellToAddModListSCG;

[0012] 2. Existing Solutions for Initial Measurements at Idle-to-Connected Transition in LTE (Release 15) In LTE Release 15, it is possible to configure the UE to report so-called initial measurements when transitioning from idle to connected state. These measurements are measurements that the UE can perform in idle state according to the configuration provided by the source cell. The intention is that by having the network receive these measurements immediately after the UE becomes connected, the network can quickly set up CA and / or other forms of DC (e.g., EN-DC, MR-DC, etc.) without having to first provide a measurement configuration (measConfig) in RRC_CONNECTED as shown in the section above and then wait hundreds of milliseconds until the measurements are reported to the network.

[0013] 2.1 Measurement configuration for initial measurements at resume in LTE A first aspect of the existing solution, as standardized in Evolved Universal Terrestrial Radio Access (E-UTRA), is described in 3GPP TS 36.331, subclause 5.6.20 Idle Mode Measurements. The UE can receive idle mode measurement configurations in the system information (i.e., in SIB5) in the field MeasIdleConfigSIB-r15. These idle mode measurement configurations can indicate up to eight cells or cell ID ranges on which to perform measurements. In addition, the UE can configure dedicated measurement configurations in the RRCConnectionRelease message with measIdleDedicated-r15, which overrides the broadcasted configurations in SIB5 when transitioning from RRC_CONNECTED to RRC_IDLE. The broadcasted dedicated signaling is shown below: TIFF0007729866000003.tif178170TIFF0007729866000004.tif219170JPEG0007729866000005.jpg122170

[0014] Regarding carrier information and cell list, the UE is provided with a list of carriers (measIdleCarrieListEUTRA) and, optionally, a list of cells (measCellList) on which the UE should perform measurements. The field s-NonIntraSearch of SystemInformationBlockType3 does not affect the UE measurement procedure in IDLE mode.

[0015] Upon receiving the measurement configuration, the UE starts timer T331 with the value provided in measIdleDuration, which can be between 0 and 300 seconds. The timer is stopped upon receiving RRCConnectionSetup, RRCConnectionResume, which indicates a transition to RRC_CONNECTED. The concept exists to limit the amount of time the UE performs measurements for the purpose of initial measurements.

[0016] Another concept introduced in the LTE Release 15 solution is the validity area, which comprises a list of physical cell identities (PCIs). Its intention is to limit the area in which CA or DC may be set up later when the UE resumes / sets up a connection, so that initial measurements are somewhat useful for that purpose. If the validityArea is set and the UE reselects a serving cell whose PCI does not match any entry in the validityArea for the corresponding carrier frequency, timer T331 is stopped. The UE then stops performing IDLE measurements and releases the configuration (i.e., VarMeasIdleConfig). Note that this does not necessarily imply that the UE releases the idle measurements configured and performed in Release; they are still stored and may be requested by the network in some cases. In addition, the UE may continue idle mode measurements according to the SIB5 configuration broadcasted after timer T331 expires or is stopped.

[0017] It is further noted that since cell candidates for CA setup must be within a minimum acceptable threshold, only measurements above a certain threshold (i.e., minimum quality threshold) shall be stored. How the UE performs measurements in IDLE mode is up to the UE implementation as long as the RAN4 requirements for measurement reporting defined in 3GPP TS 36.133 are met.

[0018] The UE behavior as captured in 3GPP TS 36.331 is detailed further below. 5.6.20 Idle Mode Measurements 5.6.20.1 Overview This procedure specifies the measurements made by the UE in RRC_IDLE when it has IDLE mode measurement configuration, and the storage of measurements available to the UE in both RRC_IDLE and RRC_CONNECTED. 5.6.20.2 Start While T331 is running, the UE: 1> Carry out the measurement according to the following: 2> For each entry in measIdleCarrierListEUTRA in VarMeasIdleConfig: 3> If the UE supports carrier aggregation between the serving carrier and the carrier frequency and bandwidth indicated by carrierFreq and allowedMeasBandwidth in the corresponding entry; 4> Perform measurements at the carrier frequency and bandwidth indicated by carrierFreq and allowedMeasBandwidth in the corresponding entry; NOTE: The field s-NonIntraSearch of SystemInformationBlockType3 does not affect the UE measurement procedure in IDLE mode. How the UE performs measurements in IDLE mode is up to the UE implementation, as long as the requirements in TS 36.133

[16] regarding measurement reporting are met. The UE does not need to perform idle measurements unless the SIB2 idle measurement indication is configured. 4> If measCellList is included: 5> Consider the PCell and the cells indicated by each entry in the measCellList as applicable for idle mode measurement reporting; 4> In other cases: 5> Consider the PCell and up to maxCellMeasIdle strongest identified cells whose RSRP / RSRQ measurement results exceed the values ​​provided in the quality threshold (if any) as applicable for idle mode measurement reporting; 4> Store measurement results for cells applicable to idle mode measurement reports in VarMeasIdleReport; 3> In other cases: 4> Carrier frequency is not considered applicable to idle mode measurement reporting; 1> validityArea is set to VarMeasIdleConfig and the UE reselects a serving cell whose physical cell identity does not match any entry in validityArea for the corresponding carrier frequency; 2> Stop T331; 5.6.20.3 T331 Termination or Suspension UE: 1> When T331 is terminated or stopped: 2> Release VarMeasIdleConfig; Note: After T331 is finished or stopped, whether to continue the idle mode configuration according to the SIB5 configuration depends on the UE implementation.

[0019] Note that for the purpose of initial measurements, it is not mandatory for the source node that releases / suspends the UE to provide a dedicated idle measurement configuration. If the UE is released / suspended without being provided with a list of carriers to be measured, the UE shall obtain the list of carriers to be measured from SIB2 as described below. … 1> If the RRCConnectionRelease message contains measIdleConfig: 2> Clear VarMeasIdleConfig and VarMeasIdleReport; 2> Store the received measIdleDuration in VarMeasIdleConfig; 2> Start T331 with the value of measIdleDuration; 2> If measIdleConfig contains measIdleCarrierListEUTRA: 3> Store the received measIdleCarrierListEUTRA in VarMeasIdleConfig; 2> In other cases: 3> Store measIdleCarrierListEUTRA received via SIB5 in VarMeasIdleConfig; 2> Begin conducting idle mode measurements as specified in 5.6.20; …

[0020] Also, if the list is not provided in the RRCConnectionRelease, at each cell reselection the UE performs SIB5 Acquisition and possibly updates its list of carriers to measure as described below. 5.2.2.12 Actions to take when SystemInformationBlockType5 is received Upon receiving SystemInformationBlockType5, the UE shall: … 1> In RRC_IDLE, and if the UE has stored VarMeasIdleConfig, SIB5 contains measIdleConfigSIB, and the UE is capable of IDLE mode measurements for CA: 2> If T331 is running and VarMeasIdleConfig does not contain the measIdleCarrierListEUTRA received from the RRCConnectionRelease message: 3> Store measIdleCarrierListEUTRA of measIdleConfigSIB in VarMeasIdleConfig; 2> Perform idle mode measurements for supported carriers as specified in 5.6.20;

[0021] If the UE enters a cell within its validity area that does not broadcast the measurement configuration of SIB5, the UE continues to perform idle measurements according to the SIB5 obtained in the source cell (i.e., the cell where the UE was suspended or released). 5.3.3.4 Reception of RRCConnectionSetup by the UE NOTE 1: Prior to this, lower layer signaling is used to allocate the C-RNTI. For further details, see TS 36.321 [6]. UE: <<Omitted part>> 1> Set the content of the RRCConnectionSetupComplete message as follows: <<Omitted part>> 2> When the UE is connected to the EPC: 3> For non-NB-IoT: 4> If the UE has radio link failure or handover failure information available in a VarRLF-Report and the RPLMN is included in the plmn-IdentityList stored in the VarRLF-Report: 5> rlf-InfoAvailable included; 4> If the UE has logged measurements of the MBSFN available for E-UTRA and the RPLMN is included in the plmn-IdentityList stored in the VarLogMeasReport: 5> logMeasAvailableMBSFN included; 4> Alternatively, if the UE has logged measurements available for E-UTRA and the RPLMN is included in the plmn-IdentityList stored in the VarLogMeasReport: 5>Include logMeasAvailable; 4> If the UE has Bluetooth logged measurements and the RPLMN is included in the plmn-IdentityList stored in the VarLogMeasReport: 5>Include logMeasAvailableBT; 4> If the UE has logged measurements for an available WLAN and the RPLMN is included in the plmn-IdentityList stored in the VarLogMeasReport: 5> logMeasAvailableWLAN included; 4> If the UE has connection establishment failure information available in VarConnEstFailReport and if the RPLMN is equal to the plmn-Identity stored in VarConnEstFailReport: 5>connEstFailInfoAvailable include; 4> includes mobilityState and sets mobilityState to the mobility state of the UE (as specified in TS 36.304 [4]) just before entering RRC_CONNECTED state; 4> If SIB2 contains idleModeMeasurements and the UE has IDLE mode measurement information available in VarMeasIdleReport: 5> Including idleMeasAvailable; 4> If T331 is running, stop it; 4> If the UE has flight route information available: 5> includes flightPathInfoAvailable; <<Omitted part>> 1> Submit and send the RRCConnectionSetupComplete message to the lower layer; 1> The procedure ends. 5.3.3.4a Reception of RRCConnectionResume by the UE UE: <<Omitted part>> 1> Set the content of the RRCConnectionResumeComplete message as follows: 2> Set selectedPLMN-Identity to the PLMN selected by higher layers from the PLMNs included in the plmn-IdentityList of SystemInformationBlockType1 (see TS 23.122

[11] , TS 24.301

[35] for E-UTRA / EPC, and TS 24.501

[95] for E-UTRA / 5GC); 2> Set dedicatedInfoNAS to contain the information received from upper layers; 2> For non-NB-IoT: 3> When resuming an RRC connection from a suspended RRC connection: <<Omitted part>> 4> If SIB2 contains idleModeMeasurements and the UE has IDLE mode measurement information available in VarMeasIdleReport: 5> Including idleMeasAvailable; 4> If T331 is running, stop it; 4> If the UE has flight route information available: 5> includes flightPathInfoAvailable; <<Omitted part>> 1> Submit and send an RRCConnectionResumeComplete message to lower layers; 1> The procedure ends. 5.3.8.3 Reception of RRCConnectionRelease by the UE UE: <<Omitted part>> 1> If the RRCConnectionRelease message contains measIdleConfig: 2> Clear VarMeasIdleConfig and VarMeasIdleReport; 2> Store the received measIdleDuration in VarMeasIdleConfig; 2> Start T331 with the value of measIdleDuration; 2> If measIdleConfig contains measIdleCarrierListEUTRA: 3> Store the received measIdleCarrierListEUTRA in VarMeasIdleConfig; 3> Begin conducting idle mode measurements as specified in 5.6.20; NOTE 2: If measIdleConfig does not contain measIdleCarrierListEUTRA, the UE may receive measIdleCarrierListEUTRA as specified in 5.2.2.12. 1> For NB-IoT, if the RRCConnectionRelease message contains redirectedCarrierInfor: 2> If redirectedCarrierOffsetDedicated is included in redirectedCarrierInfor: 3> Store the dedicated offset for frequency in redirectedCarrierInfor; 3> Start timer T322 with timer value set according to the value of T322 in redirectedCarrierInfor; 1> If the releaseCause received in the RRCConnectionRelease message indicates loadBalancingTAURequired: 2> Perform actions on leaving RRC_CONNECTED with release cause "Load balancing TAU required" as specified in 5.3.12; 1> Or, if the releaseCause received in the RRCConnectionRelease message indicates cs-FallbackHighPriority: 2> Perform actions when leaving RRC_CONNECTED with release cause "CS Fallback High Priority" as specified in 5.3.12; 1> In other cases: 2> If waitTime exists: 3> Start timer T302 with the timer value set according to waitTime; 3> Inform higher layers that access restrictions are applicable for all access categories other than categories "0" and "2"; 2> if extendedWaitTime exists; and 2> If the UE supports delay-tolerant access or is an NB-IoT UE: 3> Forward extendedWaitTime to upper layer; 2> If extendedWaitTime-CPdata is present and the NB-IoT UE supports only control plane CIoT EPS optimization: 3>Transfer extendedWaitTime-CPdata to upper layer; 2> If the releaseCause received in the RRCConnectionRelease message indicates rrc-Suspend: 3> Perform actions on leaving RRC_CONNECTED with release cause "RRC Pause" as specified in 5.3.12; 2> Or if rrc-InactiveConfig is included: 3> Perform actions upon entering RRC_INACTIVE as specified in 5.3.8.7; 2> In other cases: 3> Perform actions on leaving RRC_CONNECTED or RRC_INACTIVE with release cause "Other" as specified in 5.3.12; 5.6.5.3 Receiving a UEInformationRequest message Upon receiving a UEInformationRequest message, the UE shall, only after successful security activation: <<Omitted part>> 1> If idleModeMeasurementReq is included in UEInformationRequest and the UE contains VarMeasIdleReport: 2> Set measResultListIdle in the UEInformationResponse message to the value of measReportIdle in VarMeasIdleReport; 2> If the delivery of the UEInformationResponse message is successful and confirmed by the lower layer, discard the VarMeasIdleReport; 1> If the flightPathInfoReq field is present and the UE has flight path information available: 2> include flightPathInfoReport and set flightPathInfoReport to contain a list of waypoints along the flight path; 2> If includeTimeStamp is set to TRUE: 3> Set the field timeStamp to the time at which the UE intends to reach each waypoint, if this information is available to the UE; 1> If logMeasReport is included in UEInformationResponse: 2> Submit a UEInformationResponse message to the lower layer and send it via SRB2; 2> Upon successful delivery of the UEInformationResponse message, confirmed by the lower layer, discard the logged measurement entries contained in the logMeasInfoList from VarLogMeasReport; 1> In other cases: 2> Submit a UEInformationResponse message to the lower layer and send it via SRB1;

[0022] 2.2 Current Status of Initial Measurement Setup in Release 16 The initial measurement configuration for Rel-16 is currently under consideration. After RAN2#106, an email study was initiated and a summary of the email study can be found in R2-1908673. It proposed to separate the measurement configuration for frequencies related to cell reselection from those not related to cell reselection (i.e., frequencies that can be used for SCell but not PCell / PSCell). The proposed measurement configuration should be communicated to the UE as shown in Figure 4.

[0023] For overlapping carriers (i.e., also eligible for cell reselection), the measurement configuration is provided in the SIB, and for non-overlapping frequencies (eligible for cell reselection), the measurement configuration is provided in a SIB (e.g., a new SIB, SIB10) or in a dedicated manner to the UE in the RRCRelease message.

[0024] Thus, the New Radio (NR) RRCRelease message contains: measIdleDuration, and Optionally: 1. A list of overlapping frequencies that the UE must measure in idle / inactive mode; 2. A list of non-overlapping frequencies that the UE must measure in idle / inactive mode, along with the measurement configuration for those frequencies. SIBs for initial measurements (e.g., SIB10) include: 1. A list of overlapping frequencies that the UE must measure in idle / inactive mode, and 2. A list of non-overlapping frequencies that the UE must measure in idle / inactive mode, along with the measurement configuration for those frequencies. Summary of the Invention

[0025] Systems and methods are disclosed herein for handling idle mode measurement configuration mismatches when a wireless device performs cell reselection. Embodiments of the method implemented by a wireless device are disclosed. In one embodiment, a method implemented by a wireless device for idle mode measurements while the wireless device is in an idle or inactive state includes obtaining a first measurement configuration for a first set of carriers in a first cell. The first set of carriers includes one or more overlapping carriers and / or one or more non-overlapping carriers. Overlapping carriers are carriers configured for both idle mode measurements and inter-frequency mobility measurements. Non-overlapping carriers are carriers configured for idle mode measurements but not for inter-frequency mobility measurements. The method further includes transitioning to a dormant state. The method further includes, while in the dormant state, performing cell reselection from the first cell to the second cell while the idle mode measurement duration timer is running, obtaining a second measurement configuration for a second set of carriers from the second cell, the second measurement configuration including one or more overlapping carriers and / or one or more non-overlapping carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration. In this manner, the wireless device handles the inconsistencies.

[0026] In one embodiment, the one or more inconsistencies include a inconsistency between a dedicated measurement configuration in a first cell and a broadcasted measurement configuration in a second cell.

[0027] In one embodiment, the one or more inconsistencies include a inconsistency between a broadcasted measurement configuration in a first cell and a broadcasted measurement configuration in a second cell.

[0028] In one embodiment, the one or more actions include replacing a measurement configuration from among the first measurement configurations with a mismatched measurement configuration from among the second measurement configurations.

[0029] In one embodiment, the one or more actions include retaining a measurement setting from the first measurement setting that is inconsistent with an inconsistent measurement setting from the second measurement setting.

[0030] In one embodiment, the method further includes, while in the dormant state, starting an idle mode measurement duration timer before performing cell reselection, and performing idle mode measurements according to the first measurement configuration while the idle mode measurement duration timer is running.

[0031] In one embodiment, the method further includes, while in the dormant state, before performing cell reselection, performing cell reselection measurements on one or more overlapping carriers of the first set of carriers according to the first measurement configuration.

[0032] In one embodiment, the particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers, a first measurement configuration for the particular carrier in the first cell differs from a second measurement configuration for the particular carrier in the second cell, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes retaining the first measurement configuration for the particular carrier and ignoring the second measurement configuration for the particular carrier.

[0033] In one embodiment, the specific carrier is an overlapping carrier in both the first set of carriers and the second set of carriers, and a first measurement configuration for the specific carrier in the first cell is different from a second measurement configuration for the specific carrier in the second cell, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes replacing the first measurement configuration for the specific carrier with the second measurement configuration for the specific carrier and performing measurements for the specific carrier according to the second measurement configuration for the specific carrier.

[0034] In one embodiment, the particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers, a first measurement configuration for the particular carrier in the first cell differs from a second measurement configuration for the particular carrier in the second cell, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes stopping performance of measurements, including idle mode measurements and, if applicable, inter-frequency mobility measurements, for the particular carrier. In one embodiment, performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration further includes erasing the first and second measurement configurations for the particular carrier.

[0035] In one embodiment, the particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers, a first measurement configuration for the particular carrier in the first cell differs from a second measurement configuration for the particular carrier in the second cell, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes pausing performance of measurements, including idle mode measurements and, if applicable, inter-frequency mobility measurements, for the particular carrier.

[0036] In one embodiment, with respect to a particular carrier, the inconsistency between the first measurement configuration for the particular carrier and the second measurement configuration for the particular carrier comprises a inconsistency between a broadcasted measurement configuration for the particular carrier of the first cell and a broadcasted measurement configuration for the particular carrier of the second cell.

[0037] In one embodiment, the particular carrier is an overlapping carrier in the first set of carriers but not an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes continuing to perform idle mode measurements for the particular carrier in accordance with the first measurement configuration for the particular carrier, and performing measurements for cell reselection for the particular carrier in accordance with the second measurement configuration.

[0038] In one embodiment, a particular carrier is an overlapping carrier in the first set of carriers but is not an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes stopping performance of measurements, including both idle mode measurements and inter-frequency mobility measurements, for the particular carrier.

[0039] In one embodiment, a particular carrier is an overlapping carrier in the first set of carriers but not an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes pausing performance of measurements, including both idle mode measurements and inter-frequency mobility measurements, for the particular carrier.

[0040] In one embodiment, the particular carrier is a non-overlapping carrier in the first set of carriers and the particular carrier is an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more mismatches between the first measurement configuration and the second measurement configuration includes performing measurements on the particular carrier in accordance with the first measurement configuration for the particular carrier. In one embodiment, the first measurement configuration includes a dedicated measurement configuration for the particular carrier received from the first cell, and performing measurements on the particular carrier in accordance with the first measurement configuration for the particular carrier includes performing measurements on the particular carrier in accordance with the dedicated measurement configuration for the particular carrier received from the first cell.

[0041] In one embodiment, the particular carrier is a non-overlapping carrier in the first set of carriers and the particular carrier is an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes replacing the first measurement configuration for the particular carrier with a second measurement configuration for the particular carrier and performing measurements on the particular carrier according to the second measurement configuration for the particular carrier. In one embodiment, the first measurement configuration includes a dedicated measurement configuration for the particular carrier received from the first cell and the second measurement configuration includes a broadcast measurement configuration for the particular carrier received from the second cell, and replacing the first measurement configuration for the particular carrier with the second measurement configuration for the particular carrier includes replacing the dedicated measurement configuration for the particular carrier received from the first cell with the broadcast measurement configuration for the particular carrier received from the second cell.

[0042] In one embodiment, the particular carrier is a non-overlapping carrier in the first set of carriers and the particular carrier is an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes performing idle mode measurements on the particular carrier in accordance with the first measurement configuration for the particular carrier and performing inter-frequency mobility measurements on the particular carrier in accordance with the second measurement configuration for the particular carrier. In one embodiment, the first measurement configuration includes a dedicated measurement configuration for the particular carrier received from the first cell and the second measurement configuration includes a broadcast measurement configuration for the particular carrier received from the second cell, and performing idle mode measurements on the particular carrier in accordance with the first measurement configuration for the particular carrier includes performing idle mode measurements on the particular carrier in accordance with the dedicated measurement configuration for the particular carrier received from the first cell, and performing inter-frequency mobility measurements on the particular carrier in accordance with the second measurement configuration for the particular carrier includes performing inter-frequency mobility measurements on the particular carrier in accordance with the broadcast measurement configuration for the particular carrier received from the source cell.

[0043] In one embodiment, the particular carrier is a non-overlapping carrier in the first set of carriers and the particular carrier is an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes ceasing performance of idle mode measurements for the particular carrier.

[0044] In one embodiment, the particular carrier is a non-overlapping carrier in the first set of carriers and the particular carrier is an overlapping carrier in the second set of carriers, and performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration includes pausing performance of measurements, including both idle mode measurements and inter-frequency mobility measurements, for the particular carrier (612-3E1).

[0045] Corresponding embodiments of wireless devices are also disclosed. In one embodiment, a wireless device for idle mode measurements while the wireless device is in an idle or inactive state is adapted to acquire a first measurement configuration for a first set of carriers including one or more overlapping carriers and / or one or more non-overlapping carriers in a first cell. The wireless device is further adapted to transition to a dormant state. While in the dormant state, the wireless device is further adapted to perform cell reselection from the first cell to a second cell while an idle mode measurement duration timer is running, acquire a second measurement configuration for the second set of carriers including one or more overlapping carriers and / or one or more non-overlapping carriers from the second cell, and perform one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration.

[0046] In one embodiment, a wireless device for idle mode measurements while the wireless device is in an idle or inactive state comprises one or more transmitters, one or more receivers, and a processing circuit associated with the one or more transmitters and the one or more receivers. The processing circuit is configured to cause the wireless device to acquire a first measurement configuration for a first set of carriers in a first cell, the first set including one or more overlapping carriers and / or one or more non-overlapping carriers. The processing circuit is further configured to cause the wireless device to transition to a dormant state. The processing circuit is further configured to cause the wireless device, while in the dormant state, to perform cell reselection from the first cell to a second cell while an idle mode measurement duration timer is running, to acquire a second measurement configuration for a second set of carriers from the second cell, the second set including one or more overlapping carriers and / or one or more non-overlapping carriers, and to perform one or more actions in response to one or more mismatches between the first measurement configuration and the second measurement configuration.

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure. [Brief explanation of the drawings]

[0048] [Figure 1] FIG. 1 illustrates cell aggregation for carrier aggregation (CA) at the medium access control (MAC) level. [Figure 2] FIG. 1 illustrates transitions between activated, inactivated, and dormant cell states. [Figure 3] FIG. 1 illustrates a process by which a network decides to set up CA or dual connectivity (DC) for a user equipment (UE). [Figure 4] FIG. 10 illustrates how measurements are communicated to the UE. [Figure 5]FIG. 1 illustrates an example of a cellular communication system in which embodiments of the present disclosure may be implemented. [Figure 6] 1 illustrates a procedure for handling inconsistencies between measurement configurations, including initial measurement configurations, of source and target cells during cell reselection according to an embodiment of the present disclosure. [Figure 7] 1 is a schematic block diagram illustrating an example embodiment of a radio access node, such as a base station, in accordance with the present disclosure. [Figure 8] 1 is a schematic block diagram illustrating an example embodiment of a radio access node, such as a base station, in accordance with the present disclosure. [Figure 9] 1 is a schematic block diagram illustrating an example embodiment of a radio access node, such as a base station, in accordance with the present disclosure. [Figure 10] FIG. 1 is a schematic block diagram illustrating an example embodiment of a wireless device, such as a UE, in accordance with the present disclosure. [Figure 11] FIG. 1 is a schematic block diagram illustrating an example embodiment of a wireless device, such as a UE, in accordance with the present disclosure. [Figure 12] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 13] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 14] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 15] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 16] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 17] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 18] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 19] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 20] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 21]FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 22] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. [Figure 23] FIG. 7 illustrates an embodiment of step 612 of FIG. 6 according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0049] The embodiments described below represent information that will enable those skilled in the art to practice the embodiments and illustrate the best modes of practicing the embodiments. Upon reading the following description in light of the accompanying drawings, those skilled in the art will understand the concepts of the present disclosure and will recognize applications of those concepts not specifically addressed herein. It should be understood that these concepts and applications are within the scope of the present disclosure.

[0050] In general, all terms used herein should be interpreted according to their original meaning in the relevant art unless a different meaning is clearly given and / or is implied by the context in which the term is used. All references to elements, devices, components, means, steps, etc. should be broadly interpreted as referring to at least one instance of the element, device, component, means, step, etc., unless expressly specified otherwise. The steps of any method disclosed herein need not necessarily be performed in the exact order disclosed, unless a step is explicitly described as occurring before or after another step and / or unless it is implied that a step must occur before or after another step. Any feature of any of the embodiments disclosed herein may be applied to any other embodiment, where appropriate. Similarly, any advantage of any of the embodiments may be applied to any other embodiment, and vice versa. Other objects, features, and advantages of the disclosed embodiments will become apparent from the following description.

[0051] Wireless Node: As used herein, a "wireless node" is either a wireless access node or a wireless device.

[0052] Radio Access Node: As used herein, a "radio access node" or "radio network node" is any node in a radio access network of a cellular communication network that operates to transmit and / or receive signals wirelessly. Some examples of radio access nodes include, but are not limited to, base stations (e.g., a New Radio (NR) base station (gNB) in a 3rd Generation Partnership Project (3GPP) fifth-generation (5G) NR network, or an enhanced or evolved Node B (eNB) in a 3GPP long-term evolution (LTE) network), high-power or macro base stations, low-power base stations (e.g., a micro base station, pico base station, or Home eNB), and relay nodes.

[0053] Core network node: As used herein, a "core network node" is any type of node in a core network or any node that implements a core network function. Some examples of core network nodes include, for example, a Mobility Management Entity (MME), a Packet Data Network Gateway (P-GW), a Service Capability Publication Function (SCEF), a Home Subscriber Server (HSS), etc. Some other examples of core network nodes include nodes that implement Access and Mobility Functions (AMF), a UPF, a Session Management Function (SMF), an Authentication Server Function (AUSF), a Network Slice Selection Function (NSSF), a Network Exposure Function (NEF), a Network Function (NF) Repository Function (NRF), a Policy Control Function (PCF), a Unified Data Management (UDM), etc.

[0054] Wireless Device: As used herein, a "wireless device" is any type of device that has access to (i.e., is served by) a cellular communications network by wirelessly transmitting and / or receiving signals to a wireless access node. Some examples of wireless devices include, but are not limited to, user equipment devices (UE) in 3GPP networks and machine type communications (MTC) devices.

[0055] Network Node: As used herein, a "network node" is any node that is part of either the radio access network or the core network of a cellular communications network / system.

[0056] It should be noted that the remainder of this specification focuses on 3GPP cellular communication systems, and as such, 3GPP terminology or terminology similar to 3GPP terminology is often used, however, the concepts disclosed herein are not limited to 3GPP systems.

[0057] It is important to note that although the description herein may refer to the term "cell," beams may be used instead of cells, particularly with respect to 5G NR concepts, and therefore the concepts disclosed herein are equally applicable to both cells and beams.

[0058] It should be noted that the terms "initial measurement" and "idle mode measurement" are used interchangeably herein. Similarly, the terms "initial measurement configuration" and "idle mode measurement configuration" are used interchangeably herein.

[0059] Currently, a particular challenge exists regarding idle mode measurement configuration: Assume that the UE is transferred to IDLE / INACTIVE mode and configured with a dedicated initial measurement configuration as follows: List of frequencies to measure: Overlapping (f1, f2, f3) Non-overlapping (f4, f5, f6) + measurement settings for these frequencies, and measIdleDuration Further assume that the cell in which the UE goes IDLE / INACTIVE broadcasts measurement configurations for f1, f2, and f3.

[0060] The UE sets timer T331 to the value measIdleDuration, starts timer T331, and begins performing idle mode measurements. For simplicity, it is assumed that the UE can perform DC / CA between the serving cell frequency and all configured frequencies (f1 to f6). Therefore, the UE begins performing idle mode measurements for all frequencies f1 to f6.

[0061] It is assumed that the UE performs cell reselection to another cell that broadcasts the following information: Cell reselection candidate frequencies and their measurement settings: f1, f2 * , f4 In other words, a) the measurement configuration of this cell for f2 is different from the measurement configuration for f2 in the cell where the UE was released (e.g., different synchronization signal block (SSB)-based measurement timing configuration (SMTC) values ​​if the network was not fully synchronized); b) the frequency (f4) that was not eligible for cell reselection in the cell where the UE was released is now eligible for cell reselection in the new cell; and c) The frequency (f3) that was eligible for cell reselection in the cell where the UE was released is now ineligible for cell reselection in the new cell. Currently, there is no mechanism to handle such inconsistencies between idle mode measurement configurations in source and target cells during cell reselection.

[0062] Certain aspects of the present disclosure and their embodiments may provide solutions to the above and other problems. Embodiments of the present disclosure provide a mechanism for handling idle mode measurement configuration mismatches when a UE performs cell reselection while T331 is still running. The mismatch may be between dedicated measurement configurations in the source cell and broadcasted configurations in the target cell, or / and between broadcasted information in the source and target cells.

[0063] With the proposed mechanism, the UE decides, for example: a) whether to prioritize information broadcasted in the source cell or information broadcasted in the source cell; b) whether to prioritize dedicated information received at the source or broadcast information in the target cell; and / or c) Whether to stop or pause measurements whenever there is a discrepancy between the configuration in the source cell (either dedicated or broadcasted configuration) and the broadcasted information in the target cell.

[0064] Particular embodiments may provide one or more of the following technical advantages: For example, embodiments of the present disclosure enable a UE to handle idle mode measurement configurations provided for idle mode measurements for both CA / DC and cell reselection after the UE performs cell reselection to a cell with different configurations.

[0065] In this regard, FIG. 5 illustrates an example of a cellular communication system 500 in which embodiments of the present disclosure may be implemented. In the embodiments described herein, the cellular communication system 500 is a 5G system (5GS) including an NR RAN or an LTE RAN (i.e., an E-UTRA RAN), or an Evolved Packet System (EPS) including an LTE RAN. In this example, the RAN, referred to as an eNB in ​​LTE (when connected to an EPC) or a gNB or NG-RAN node in 5G NR (e.g., an LTE RAN node connected to a 5G NR called an ng-eNB), includes base stations 502-1 and 502-2, which control corresponding (macro) cells 504-1 and 504-2. Base stations 502-1 and 502-2 are generally referred to herein collectively as base stations 502 and individually as base stations 502. Similarly, (macro) cells 504-1 and 504-2 are generally referred to herein collectively as (macro) cells 504 and individually as (macro) cells 504. The RAN may also include multiple low-power nodes 506-1 through 506-4, which control corresponding small cells 508-1 through 508-4. The low-power nodes 506-1 through 506-4 may be small base stations (such as pico or femto base stations) or remote radio heads (RRHs), etc. Notably, although not shown, one or more of the small cells 508-1 through 508-4 may alternatively be provided by the base station 502. The low-power nodes 506-1 through 506-4 are generally referred to herein collectively as low-power nodes 506 and individually as low-power nodes 506. Similarly, the small cells 508-1 through 508-4 are generally referred to herein collectively as small cells 508 and individually as small cells 508. The cellular communication system 500 also includes a core network 510. The base stations 502 (and optionally the low-power nodes 506) are connected to the core network 510.

[0066] Base station 502 and low-power node 506 serve wireless devices 512-1 through 512-5 in corresponding cells 504 and 508. Wireless devices 512-1 through 512-5 are generally referred to herein collectively as wireless devices 512 and individually as wireless devices 512. Wireless devices 512 may also be referred to herein as UEs.

[0067] Some specific example embodiments will now be considered. It should be noted that the embodiments disclosed herein are equally applicable to both LTE and NR. However, for illustrative purposes, most of the following description will refer to LTE. It should also be noted that the names of certain messages (e.g., RRC messages) referenced below with respect to LTE (TS 36.331) are not necessarily the same as the names of corresponding messages (e.g., RRC messages) in NR (TS 38.331). Message names in NR are often shortened compared to corresponding messages in LTE, for example, by removing the word "Connection." For example, LTE uses the name "RRCConnectionRelease," while NR uses the name "RRCRelease," LTE uses the name "RRCConnectionSetup," while NR uses the name "RRCSetup," LTE uses the name "RRCConnectionResumeRequest," while NR uses the name "RRCResumeRequest" or "RRCResumeRequest1," etc. Therefore, it should be noted that the detailed examples given herein with respect to particular RRC messages can also be implemented with corresponding RRC messages in NR.

[0068] Disclosed are embodiments of a method implemented in a wireless device (e.g., a wireless device or UE 512) for handling idle measurements performed for initial reporting while the UE is in a dormant state (IDLE or INACTIVE mode in LTE / NR, IDLE mode including pause in LTE). In this regard, FIG. 6 illustrates operation of a wireless device, in this example a UE 512, and one or more network nodes, in this example a base station 506-A associated with a source cell for cell selection and a base station 506-B associated with a target cell for cell selection, in accordance with some embodiments of the present disclosure. Optional steps are represented by dashed lines or dashed boxes.

[0069] As shown, the base station 506-A optionally provides measurement configurations to the UE 512 (step 600). This may be done, for example, via broadcast (e.g., in system information). Examples of measurement configurations are provided above and therefore will not be repeated here. The measurement configurations (also referred to herein as broadcast measurement configurations) include measurement configurations for one or more overlapping carriers (e.g., idle mode measurement configurations and cell reselection measurement configurations) and / or measurement configurations for one or more non-overlapping carriers (e.g., idle mode measurement configurations). As described above, "overlapping carriers" are carriers that are configured for both initial measurement reporting (i.e., idle mode measurements) and inter-frequency mobility measurements (e.g., cell reselection measurements). As will be appreciated by those skilled in the art, "inter-frequency mobility measurements" are inter-frequency measurements for mobility purposes, one example of which is cell selection / reselection measurements, such as RSRP or RSRQ measurements. Conversely, "non-overlapping carriers" are carriers that are configured for initial measurement reporting but not for inter-frequency mobility measurements.

[0070] Optionally, in some embodiments, the base station 506 transmits a message (e.g., an RRCRelease message) to the UE 512, thereby triggering a transition to a dormant state (e.g., IDLE or INACTIVE mode in LTE / NR, IDLE mode with pause in LTE) (step 602). Note that in some embodiments, this message may include measurement configurations (e.g., idle mode measurement configurations), as described above. These measurement configurations (also referred to herein as dedicated measurement configurations) include measurement configurations for one or more overlapping carriers (e.g., idle mode measurement configurations and cell reselection measurement configurations) and / or measurement configurations for one or more non-overlapping carriers (e.g., idle mode measurement configurations).

[0071] The measurement configuration obtained by UE 512 in step 600 and / or step 602 may be referred to herein as a measurement configuration for a set of carriers, where the set of carriers includes one or more non-overlapping carriers and / or one or more overlapping carriers.

[0072] The UE 512 transitions from the connected state to the dormant state (e.g., upon receiving the message of step 602) (step 604). Upon entering the dormant state, the UE 512 starts an idle mode measurement duration timer, which in this example is a T331 timer set with the IdleMeasDuration value from the idle mode measurement configuration, and performs idle mode measurements until the measurement duration timer expires or the measurements are otherwise stopped (step 606). Note that although shown as a single block, it should be understood that performing idle mode measurements is a continuous process that continues until the idle mode measurement duration timer expires or the measurements are otherwise stopped.

[0073] In this example, (e.g., while a timer is running and the UE 512 is performing idle mode measurements), the UE 512 performs cell reselection measurements (e.g., for overlapping carriers according to their respective measurement configurations) (step 608) and performs cell reselection to a target cell, which in this example is served by base station 506-B (step 610). In connection with cell reselection to the target cell, the UE 512 acquires system information regarding the target cell, including a measurement configuration. The measurement configuration (also referred to herein as a broadcast measurement configuration) includes measurement configurations for one or more overlapping carriers (e.g., idle mode measurement configuration and cell reselection measurement configuration) and / or measurement configurations for one or more non-overlapping carriers (e.g., idle mode measurement configuration). The measurement configuration acquired by the UE 512 from the target cell may be referred to herein as a measurement configuration for a set of carriers, where the set of carriers includes one or more non-overlapping carriers and / or one or more overlapping carriers.

[0074] The UE 512 performs one or more actions in response to one or more inconsistencies between the measurement configuration from the source cell and the measurement configuration from the target cell (step 612). Various embodiments of one or more actions performed by the UE 512 in response to a mismatch between the measurement configuration obtained from the source cell and the measurement configuration obtained from the target cell are described below. Generally, these actions handle or address how the UE 512 performs measurements for a particular carrier for which there is a measurement mismatch. In other words, the UE 512 determines that there is one or more inconsistencies between the measurement configuration obtained from the source cell for each set of carriers for the measurement configuration and the measurement configuration obtained from the target cell for each set of carriers for the measurement configuration. Various actions that may be performed by the UE 512 in response to a detected inconsistency are described below. The action performed may depend on the type of inconsistency.

[0075] Optionally, the UE 512 subsequently receives a message (e.g., RRC connection setup or RRC connection resumption) from the base station 506-B serving the target cell (step 614). Optionally, the UE 512 transmits a message to the base station 506, in this example including an indication that idle mode measurements are available (step 616). Optionally, the UE 512 transmits the idle mode measurements to the base station 506, e.g., in each report (step 618). Optionally, the base station 506 utilizes the idle mode measurements (step 620).

[0076] Next, a description of various embodiments is provided of how the UE 512 performs one or more actions to handle any inconsistency between the idle mode measurement configuration for the source cell and the idle mode measurement configuration of the target cell.

[0077] The UE 512 receives an RRCRelease (or RRCConnectionRelease) message in the source cell (e.g., in step 602). This message contains dedicated idle mode measurement configuration for overlapping (applicable to both cell reselection and idle mode measurements) and / or non-overlapping (applicable to idle mode measurements only) frequencies on which measurements will be performed. For the example used in the following description, the UE 512 receives the dedicated idle mode measurement configuration in the RRCRelease message indicating: Overlapping frequencies (f1, f2, f3), Non-overlapping frequencies (f4, f5, f6), and Measurement settings for non-overlapping frequencies (f4, f5, f6). The UE 512 obtains the measurement configuration for the overlapping frequencies (f1, f2, f3) from the information broadcasted in the source cell (eg, in step 600).

[0078] UE 512 starts the T331 timer based on the received measIdleDuration in the RRCRelease message and starts idle mode measurements on the frequencies indicated for initial measurements in RRCRelease (e.g., in step 606) based on the dedicated configuration for cells that are not candidates for cell reselection included in RRCRelease and the broadcasted configuration for cells that are candidates for cell reselection.

[0079] The UE 512 performs cell reselection to the target cell (eg, at step 610), eg, based on legacy cell reselection criteria.

[0080] In some embodiments, the one or more actions performed by UE 512 (e.g., in step 612) in response to a mismatch in measurement settings between the source cell and the target cell include any one or more of the following actions: For each frequency (also referred to herein as a carrier) that is a candidate for cell reselection in both the source cell and the target cell (i.e., an overlapping carrier) and where the configuration broadcasted in the source cell differs from the configuration broadcasted in the target cell, if the UE receives an instruction to perform initial measurements on the frequency, a) The UE continues to use the old broadcasted measurement configuration from the source cell for both initial measurements and cell reselection measurements for this frequency. Thus, the UE ignores the broadcasted measurement configuration for this frequency received from the target cell. Thus, in one embodiment as shown in Figure 12, step 612 of Figure 6 includes retaining the measurement configuration for the frequency (carrier) received from the source cell (step 612-1A1) and ignoring the measurement configuration for the frequency (carrier) received from the target cell (step 612-1A2). For example, if a source cell provides broadcasted measurement configurations for frequencies (f1, f2, f3), but a target cell provides a different measurement configuration for, say, f2 (but the same configuration for f1 and f3) (i.e., [f1, f2 * ,f3]), UE uses [f1,f2,f3] to * Continue to ignore. b) The UE replaces the broadcasted measurement configuration from the source cell with the broadcasted measurement configuration from the target cell and performs measurements accordingly. Thus, in one embodiment as shown in Figure 13, step 612 of Figure 6 includes replacing the (broadcasted) measurement configuration for the frequency (carrier) received from the source cell with the (broadcasted) measurement configuration for the frequency (carrier) received from the target cell (step 612-1B1), and performing measurements for the frequency (carrier) in accordance with the (broadcasted) measurement configuration for the frequency (carrier) received from the target cell (step 612-1B2). For example, if a source cell provides broadcasted measurement configurations for frequencies (f1, f2, f3), but a target cell provides a different measurement configuration for, say, f2 (but the same configuration for f1 and f3) (i.e., [f1, f2 * ,f3]), UE is [f1,f2 * , f3] and ignore the old f2. c) The UE stops measuring the frequency and clears the measurement configuration for the frequency. Thus, in one embodiment as shown in Figure 14, step 612 of Figure 6 includes stopping performing measurements on the frequency (carrier) (step 612-1C1) and clearing the measurement configuration for the frequency (carrier) (step 612-1C2). For example, if a source cell provides broadcasted measurement configurations for frequencies (f1, f2, f3), but a target cell provides a different measurement configuration for, say, f2 (but the same configuration for f1 and f3) (i.e., [f1, f2 * , f3]), the UE will stop measurements for f2 for both initial measurements and cell reselection, but will continue measurements for f1 and f3. The UE will also erase the configuration for f2. d) The UE pauses measurements on that frequency while camping on the target cell. Thus, in one embodiment as shown in Figure 15, step 612 of Figure 6 includes pausing measurements on the frequency (carrier) (step 612-1D1). If the UE reselects back to the source cell or reselects another cell with the same configuration for that frequency as the source cell, the UE continues measuring that frequency. For example, if a source cell provides broadcasted measurement configurations for frequencies (f1, f2, f3), but a target cell provides a different measurement configuration for, say, f2 (but the same configuration for f1 and f3) (i.e., [f1, f2 *, f3]), the UE stops measurements for f2 for both initial measurements and cell reselection, but continues measurements for f1 and f3. However, the UE retains the measurement configuration for f2, and when the UE returns to the source cell, the UE resumes measurements using the stored configuration.

[0081] If the UE receives an instruction to perform initial measurements from the source cell for each frequency that was a candidate for cell reselection in the source cell but was not a candidate in the target cell, a) The UE continues to perform initial measurements using the old broadcasted measurement configuration from the source cell and uses the broadcasted configuration from the target for cell reselection. Thus, in one embodiment as shown in Figure 16, step 612 of Figure 6 includes continuing to perform idle mode measurements on frequencies (carriers) in accordance with the measurement configuration for the frequencies (carriers) received from the source cell (step 612-2A1), and performing measurements for cell reselection on frequencies (carriers) in accordance with the measurement configuration for the frequencies (carriers) received from the target cell (step 612-2A2). For example, if the source cell provided broadcasted overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provides measurement configurations only for f1 and f3, the UE will continue to use [f1, f2, f3, f4, f5, f6] for the initial configuration, but will perform cell reselection only to (f1, f2). b) The UE stops measurements on that frequency (i.e., neither cell reselection nor initial measurements). Thus, in one embodiment as shown in Figure 17, step 612 of Figure 6 includes stopping performing measurements on the frequency (carrier) (step 612-2B1) and clearing (releasing) the measurement configuration for the frequency (carrier) (step 612-2B2). For example, if the source cell provided broadcasted overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provides measurement configurations only for f1 and f3, the UE will continue to use [f1, f3, f4, f5, f6] for the initial configuration, but will perform cell reselection only to (f1, f3), and the UE will release the measurement configuration for f2. c) The UE pauses measurements on that frequency while camping on the target cell. Thus, in one embodiment as shown in Figure 18, step 612 of Figure 6 includes pausing measurements on the frequency (carrier) (step 612-2C1). If the UE reselects back to the source cell or reselects another cell whose frequency is also eligible for cell reselection, the UE continues measuring that frequency. For example, if the source cell provided broadcast overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provides measurement configurations only for f1 and f3, the UE will continue to use [f1, f3, f4, f5, f6] for the initial configuration, but will perform cell reselection only to (f1, f3), and the UE will retain the measurement configuration for f2 so that it can continue the initial measurements using those configurations if the UE returns to the source cell.

[0082] For each frequency for which the UE received a dedicated initial measurement configuration in the RRCRelease message that was not a candidate for cell reselection in the source cell but was a candidate in the target cell (i.e., for each frequency that is a non-overlapping carrier with respect to the source cell but an overlapping carrier with respect to the target cell), a) The UE continues to perform initial measurements and / or cell selection using the old dedicated configuration received with the RRCRelease at the source cell. Thus, in one embodiment as shown in Figure 19, step 612 of Figure 6 includes performing idle mode measurements and / or cell reselection measurements on a frequency (carrier) in accordance with the (dedicated) measurement configuration for that frequency (carrier) received from the source cell (step 612-3A1). For example, if a source cell provided broadcast overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provided only broadcast overlapping measurement configurations for frequencies (f4, f5, f6), * If f1 also provides broadcasted measurement configurations for f1, f2, f3, f4, f5, f6, the UE will continue to use [f1, f2, f3, f4, f5, f6] for the initial configuration and will use the old configuration (i.e., f1, f2, f3, f4) for cell reselection if f4 is received dedicated to the source cell. b) The UE replaces the old dedicated configuration from the source cell with the broadcasted configuration in the target cell and performs measurements accordingly. Thus, in one embodiment as shown in Figure 20, step 612 of Figure 6 comprises replacing the (dedicated) measurement configuration for the frequency (carrier) received from the source cell with the (broadcast) measurement configuration for the frequency (carrier) received from the target cell (step 612-3B1) and performing measurements for the frequency (carrier) accordingly (step 612-3B2). For example, if a source cell provided broadcast overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provided only broadcast overlapping measurement configurations for frequencies (f4, f5, f6), * If the UE also provides broadcasted measurement configuration for [f1,f2,f3,f4 * ,f5,f6] and f4 * is broadcast to the target cell and received, the new configuration (i.e., f1, f2, f3, f4) is used for cell reselection.* ) to use. c) The UE performs idle mode measurements according to the dedicated initial measurement configuration received in the source cell and performs cell reselection measurements according to the broadcast configuration in the target cell. Thus, in one embodiment as shown in Figure 21, step 612 of Figure 6 includes performing idle mode measurements on frequencies (carriers) according to the (dedicated) initial measurement configuration received from the source cell (step 612-3C1) and performing cell reselection measurements on frequencies (carriers) according to the (broadcast) measurement configuration received from the target cell (step 612-3C2). For example, if a source cell provided broadcast overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provided only broadcast overlapping measurement configurations for frequencies (f4, f5, f6), * If the UE also provides measurement configuration for f1, f2, f3, f4, f5, f6, then the UE uses [f1, f2, f3, f4, f5, f6] for the initial setting and * is broadcast to the target cell and received, the new configuration (i.e., f1, f2, f3, f4) is used for cell reselection. * ) to use. d) The UE stops measuring that frequency for initial setup. Thus, in one embodiment as shown in Figure 22, step 612 of Figure 6 includes stopping making initial (i.e., idle mode) measurements on the frequency (carrier) (step 612-3D1). For example, if a source cell provided broadcast overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provided only broadcast overlapping measurement configurations for frequencies (f4, f5, f6), * If the UE also provides measurement configurations for f1, f2, f3, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14, f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26, f27, f28, f29, f30, f31, f32, f33, f34, f35, f36, f37, f38, f39, f40, f41, f42, f43, f44, f45, f46, f47, f48, f49, f49, f50, f51, f52, f53, f54, f55, f56, f57, f58, f59, f60, f61, f62, f63, f * (Use e) The UE pauses measurements on that frequency while camping on the target cell. Thus, in one embodiment as shown in Figure 23, step 612 of Figure 6 includes pausing measurements on the frequency (carrier) (step 612-3E1). If the UE reselects back to the source cell or reselects another cell whose frequency is not eligible for cell reselection (i.e., there is no measurement configuration for that frequency in the SIB), the UE continues measuring that frequency. For example, if a source cell provided broadcast overlapping measurement configurations for frequencies (f1, f2, f3) and dedicated non-overlapping measurement configurations for frequencies (f4, f5, f6), but the target cell provided only broadcast overlapping measurement configurations for frequencies (f4, f5, f6), * If the UE also provides measurement configurations for f1, f2, f3, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14, f15, f16, f17, f18, f19, f20, f21, f22, f23, f24, f25, f26, f27, f28, f29, f30, f31, f32, f * If the UE reselects back to the source cell, it continues measurements according to f4.

[0083] Generally, FIG. 6 may be considered to describe a method implemented by a UE or wireless device for idle mode measurements while the UE is in an idle or inactive state, the method including the following steps: acquiring a first measurement configuration for a first set of carriers in a first cell, the first set of carriers comprising: one or more overlapping carriers, which are carriers configured for both idle mode measurements and inter-frequency mobility measurements; obtaining a first measurement configuration including one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers, where the carriers are configured for idle mode measurements but not for inter-frequency mobility measurements; transitioning to a dormant state; In the dormant state, performing cell reselection from the first cell to the second cell while an idle mode measurement duration timer is running; acquiring, from a second cell, a second measurement configuration for a second set of carriers, the second set including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers that overlap with each one of the carriers of the first set of carriers, and / or one or more non-overlapping carriers that do not overlap with any of the carriers of the first set; Performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration.

[0084] It should be noted that overlapping carriers are carriers that are included in both the first set and the second set, and non-overlapping carriers are carriers that are included in only one of the sets.

[0085] As mentioned above, overlapping carriers may be applicable to both cell reselection and idle mode measurements, while non-overlapping carriers are applicable only to idle mode measurements.

[0086] 7 is a schematic block diagram of a wireless access node 700 in accordance with some embodiments of the present disclosure. The wireless access node 700 may be, for example, a base station 502 or 506. As shown, the wireless access node 700 includes a control system 702 including one or more processors 704 (e.g., a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), and / or the like), a memory 706, and a network interface 708. The one or more processors 704 are also referred to herein as processing circuits. In addition, the wireless access node 700 includes one or more radio units 710, each including one or more transmitters 712 and one or more receivers 714 coupled to one or more antennas 716. The radio units 710 may be referred to as or be part of air interface circuitry. In some embodiments, the radio units 710 are external to the control system 702 and are connected to the control system 702, for example, via a wired connection (e.g., an optical cable). However, in some other embodiments, the radio unit 710 and potentially the antenna 716 are integrated with the control system 702. The one or more processors 704 operate to provide one or more functions of the radio access node 700 as described herein (e.g., one or more functions of the base station 506-A or 506-B described above with respect to FIG. 6). In some embodiments, the functions are implemented in software, for example, stored in the memory 706 and executed by the one or more processors 704.

[0087] 8 is a schematic block diagram illustrating a virtualized embodiment of a radio access node 700 in accordance with some embodiments of the present disclosure. The discussion herein is equally applicable to other types of network nodes. Furthermore, other types of network nodes may have similar virtualization architectures.

[0088] As used herein, a "virtualized" radio access node is an implementation of a radio access node 700 in which at least a portion of the functionality of the radio access node 700 is implemented as a virtual component (e.g., via a virtual machine executing on a physical processing node of a network). As shown, in this example, the radio access node 700 includes a control system 702 including one or more processors 704 (e.g., CPUs, ASICs, FPGAs, and / or the like), memory 706, a network interface 708, and one or more radio units 710 each including one or more transmitters 712 and one or more receivers 714 coupled to one or more antennas 716, as described above. The control system 702 is connected to the radio units 710, for example, via an optical cable or the like. The control system 702 is connected via the network interface 708 to one or more processing nodes 800 coupled to or included as part of a network 802. Each processing node 800 includes one or more processors 804 (e.g., CPUs, ASICs, FPGAs, and / or the like), memory 806 , and a network interface 808 .

[0089] In this example, the functionality 810 of the radio access node 700 described herein (e.g., one or more functions of base station 506-A or 506-B, as described above with respect to FIG. 6 ) is implemented in one or more processing nodes 800 or is distributed across the control system 702 and one or more processing nodes 800 in any desired manner. In some particular embodiments, some or all of the functionality 810 of the radio access node 700 described herein are implemented as virtual components executed by one or more virtual machines, which are implemented in a virtual environment hosted by the processing nodes 800. As will be recognized by those skilled in the art, additional signaling or communication between the processing nodes 800 and the control system 702 is used to implement at least a portion of the desired functionality 810. Notably, in some embodiments, the control system 702 may not be included, in which case the radio unit 710 communicates directly with the processing nodes 800 via an appropriate network interface.

[0090] In some embodiments, a computer program is provided that includes instructions that, when executed by at least one processor, cause the at least one processor to perform functionality of the radio access node 700 or a node (e.g., processing node 800) that implements one or more of the functions 810 of the radio access node 700 in the virtual environment in accordance with any of the embodiments described herein. In some embodiments, a carrier is provided that comprises the above-mentioned computer program product. The carrier is one of an electronic signal, an optical signal, a radio signal, or a computer-readable storage medium (e.g., a non-transitory computer-readable medium such as a memory).

[0091] 9 is a schematic block diagram of a radio access node 700 in accordance with some other embodiments of the present disclosure. The radio access node 700 includes one or more modules 900, each implemented in software. The modules 900 provide the functionality of the radio access node 700 described herein (e.g., one or more functions of base station 506-A or 506-B, described above with respect to FIG. 6 ). This discussion is equally applicable to the processing nodes 800 of FIG. 8 , where the modules 900 may be implemented on one of the processing nodes 800, or distributed across multiple processing nodes 800, and / or distributed across the processing nodes 800 and the control system 702.

[0092] 10 is a schematic block diagram of a UE 1000 according to some embodiments of the present disclosure. As shown, the UE 1000 includes one or more processors 1002 (e.g., CPUs, ASICs, FPGAs, and / or the like), a memory 1004, and one or more transceivers 1006, each including one or more transmitters 1008 and one or more receivers 1010 coupled to one or more antennas 1012. The transceiver 1006 includes radio front-end circuitry connected to the antenna 1012 configured to condition signals communicated between the antenna 1012 and the processor 1002, as will be appreciated by those skilled in the art. The processor 1002 is also referred to herein as a processing circuit. The transceiver 1006 is also referred to herein as a radio circuit. In some embodiments, the functionality of the UE 1000 described above (e.g., one or more functions of a UE, e.g., UE 512, described above with respect to FIG. 6 ) may be implemented, in whole or in part, in software stored in the memory 1004 and executed by the processor 1002. It should be noted that UE1000 may include additional components not shown in FIG. 10, such as, for example, one or more user interface components (e.g., input / output interfaces including a display, buttons, touch screen, microphone, speaker, and / or the like, and / or any other components that enable information to be input to UE1000 and / or enable information to be output from UE1000), a power source (e.g., a battery and associated power circuitry), etc.

[0093] In some embodiments, a computer program is provided that includes instructions that, when executed by at least one processor, cause the at least one processor to perform functionality of the UE 1000 according to any of the embodiments described herein (e.g., one or more functions of a UE, e.g., UE 512, described above with respect to FIG. 6, etc.). In some embodiments, a carrier is provided that comprises the above-mentioned computer program product. The carrier is one of an electronic signal, an optical signal, a wireless signal, or a computer-readable storage medium (e.g., a non-transitory computer-readable medium such as a memory).

[0094] 11 is a schematic block diagram of a UE 1000 according to some other embodiments of the present disclosure. The UE 1000 includes one or more modules 1100, each implemented in software. The modules 1100 provide the functionality of the UE 1000 described herein (e.g., one or more functions of a UE, e.g., UE 512, described above with respect to FIG. 6).

[0095] Any suitable steps, methods, features, functions, or benefits described herein may be implemented through one or more functional units or modules of one or more virtual devices. Each virtual module may comprise many of these functional units. These functional units may be realized via processing circuitry, which may include one or more microprocessors or microcontrollers, as well as other digital hardware, which may include digital signal processors (DSPs), dedicated digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or more types of memory, such as read-only memory (ROM), random access memory (RAM), cache memory, flash memory devices, optical storage devices, and the like. The program code stored in memory includes program instructions for executing one or more telecommunications and / or data communication protocols, as well as instructions for implementing one or more of the techniques described herein. In some implementations, the processing circuitry may be used to cause each functional unit to perform a corresponding function in accordance with one or more embodiments of the present disclosure.

[0096] While the processes in the figures may indicate a particular order of operations performed by certain embodiments of the present disclosure, it should be understood that such orders are exemplary (e.g., alternative embodiments may perform operations in a different order, combine certain operations, overlap certain operations, etc.).

[0097] Some exemplary embodiments of the present disclosure are as follows.

[0098] Embodiment 1: In a first cell, acquiring (600 and / or 602) a first measurement configuration for a first set of carriers including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers; Transitioning to a dormant state (604); In the dormant state, Performing cell reselection (610) from the first cell to the second cell (e.g., while an idle mode measurement duration timer is running); acquiring (610) a second measurement configuration for a second set of carriers from a second cell, the second set including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers; and performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration.

[0099] Embodiment 2: The method of embodiment 1, further comprising, while in a dormant state, starting an idle mode measurement duration timer (606) before performing cell reselection (608), and performing idle mode measurements according to a first measurement configuration (e.g., while the idle mode measurement duration timer is running) (606).

[0100] Embodiment 3: The method of embodiment 1 or 2, further comprising, while in a dormant state, performing (608) cell reselection measurements on one or more overlapping carriers of the first set of carriers according to a first measurement configuration before performing (610) cell reselection.

[0101] Embodiment 4: A specific carrier frequency is in both the first set of carriers and the second set of carriers; a first measurement configuration for a particular carrier in a first cell is different from a second measurement configuration for a particular carrier in a second cell; Performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration; maintaining a first measurement configuration for a particular carrier (e.g., for both idle mode measurements and cell reselection measurements); 4. The method of any one of embodiments 1 to 3, comprising: ignoring a second measurement configuration for a particular carrier (eg, for both idle mode measurements and cell reselection measurements).

[0102] Embodiment 5: A specific carrier frequency is in both the first set of carriers and the second set of carriers; a first measurement configuration for a particular carrier in a first cell is different from a second measurement configuration for a particular carrier in a second cell; Performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration; replacing a first measurement configuration for a specific carrier (e.g., for both idle mode measurements and cell reselection measurements) with a second measurement configuration for a specific carrier (e.g., for both idle mode measurements and cell reselection measurements); and 4. The method of any one of embodiments 1 to 3, comprising: performing measurements (eg, both idle mode measurements and cell reselection measurements) on the specific carrier according to a second measurement configuration on the specific carrier.

[0103] Embodiment 6: A specific carrier frequency is in both the first set of carriers and the second set of carriers; a first measurement configuration for a particular carrier in a first cell is different from a second measurement configuration for a particular carrier in a second cell; Performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration; Stopping idle mode measurements (and e.g. cell reselection measurements) for a particular carrier; 4. The method of any one of embodiments 1 to 3, further comprising (optionally) erasing the first and second measurement configurations for the particular carrier.

[0104] Embodiment 7: A specific carrier frequency is in both the first set of carriers and the second set of carriers; a first measurement configuration for a particular carrier in a first cell is different from a second measurement configuration for a particular carrier in a second cell; 4. The method of any one of embodiments 1 to 3, wherein performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration (612) includes pausing performance of idle mode measurements (and, for example, cell reselection measurements) for a particular carrier.

[0105] Embodiment 8: A particular carrier frequency is an overlapping carrier in the first set of carriers but not an overlapping carrier in the second set of carriers; Performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration; continuing to perform idle mode measurements on the particular carrier according to the first measurement configuration for the particular carrier; 4. The method of any one of embodiments 1 to 3, comprising: performing measurements for cell reselection for the specific carrier according to the second measurement configuration.

[0106] Embodiment 9: A particular carrier frequency is an overlapping carrier in the first set of carriers but not an overlapping carrier in the second set of carriers; 4. The method of any one of embodiments 1 to 3, wherein performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration (612) includes stopping performance of measurements (e.g., idle mode measurements and cell reselection measurements) for a particular carrier.

[0107] Embodiment 10: A particular carrier frequency is an overlapping carrier in the first set of carriers but not an overlapping carrier in the second set of carriers; 4. The method of any one of embodiments 1 to 3, wherein performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration (612) includes pausing performance of measurements (e.g., idle mode measurements and cell reselection measurements) for a particular carrier.

[0108] Embodiment 11: A particular carrier frequency is not an overlapping carrier in the first set of carriers, but is a non-overlapping carrier in the first set of carriers; the particular carrier frequency is an overlapping carrier in the second set of carriers; 4. The method of any one of embodiments 1 to 3, wherein performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration (612) includes performing measurements (e.g., idle mode measurements and / or cell reselection measurements) on a particular carrier according to the first measurement configuration for the particular carrier.

[0109] Embodiment 12: A particular carrier frequency is not an overlapping carrier in the first set of carriers, but is a non-overlapping carrier in the first set of carriers; the particular carrier frequency is an overlapping carrier in the second set of carriers; Performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration; replacing a first measurement configuration for a particular carrier with a second measurement configuration for the particular carrier; 4. The method of any one of embodiments 1 to 3, comprising: performing measurements (eg, idle mode measurements and / or cell reselection measurements) on the specific carrier according to a second measurement configuration for the specific carrier.

[0110] Embodiment 13: A particular carrier frequency is not an overlapping carrier in the first set of carriers, but is a non-overlapping carrier in the first set of carriers; the particular carrier frequency is an overlapping carrier in the second set of carriers; Performing (612) one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration; performing idle mode measurements on a particular carrier according to a first measurement configuration for the particular carrier; 4. The method of any one of embodiments 1 to 3, comprising: performing cell reselection measurements on the specific carrier according to a second measurement configuration for the specific carrier.

[0111] Embodiment 14: A particular carrier frequency is not an overlapping carrier in the first set of carriers, but is a non-overlapping carrier in the first set of carriers; the particular carrier frequency is an overlapping carrier in the second set of carriers; 4. The method of any one of embodiments 1 to 3, wherein performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration (612) includes stopping performance of measurements (e.g., idle mode measurements and cell reselection measurements) for a particular carrier.

[0112] Embodiment 15: A particular carrier frequency is not an overlapping carrier in the first set of carriers, but is a non-overlapping carrier in the first set of carriers; the particular carrier frequency is an overlapping carrier in the second set of carriers; 4. The method of any one of embodiments 1 to 3, wherein performing one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration (612) includes pausing performance of measurements (e.g., idle mode measurements and cell reselection measurements) for a particular carrier.

[0113] Embodiment 16: A wireless device comprising a processing circuit configured to perform any of the steps in any of the embodiments of group A, and a power supply circuit configured to supply power to the wireless device.

[0114] Embodiment 17: A user equipment (UE) comprising: an antenna configured to transmit and receive radio signals; a radio front-end circuit connected to the antenna and the processing circuit and configured to condition signals communicated between the antenna and the processing circuit; a processing circuit configured to perform any of the steps in any of the embodiments of Group A; an input interface connected to the processing circuit and configured to enable information input to the UE to be processed by the processing circuit; an output interface connected to the processing circuit and configured to output information processed by the processing circuit from the UE; and a battery connected to the processing circuit and configured to provide power to the UE.

Claims

1. 1. A method performed by a wireless device (512) for idle mode measurements while the wireless device is in an idle or inactive state, comprising: Obtaining (600 and / or 602) a first measurement configuration for a first set of carriers in a first cell, the first set of carriers comprising: one or more overlapping carriers, which are carriers configured for both idle mode measurements and inter-frequency mobility measurements; one or more non-overlapping carriers that are configured for idle mode measurements but not for inter-frequency mobility measurements; or Obtaining a first measurement configuration (600 and / or 602) that includes both one or more overlapping carriers and one or more non-overlapping carriers; Transitioning to a dormant state (604); In the dormant state, performing cell reselection from the first cell to a second cell while an idle mode measurement duration timer is running (610); Obtaining (610) a second measurement configuration for a second set of carriers from the second cell, the second set including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers; one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration, (a) retaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration; (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; or (c) stopping or pausing measurements on a particular carrier, wherein the first measurement configuration for the particular carrier is inconsistent with the second measurement configuration for the particular carrier. and performing (612) one or more actions, including:

2. The method of claim 1 , wherein the one or more inconsistencies include a inconsistency between a dedicated measurement configuration in the first cell and a broadcasted measurement configuration in the second cell.

3. The method of claim 1 or 2, wherein the one or more inconsistencies include an inconsistency between a broadcasted measurement configuration in the first cell and a broadcasted measurement configuration in the second cell.

4. In the dormant state, before performing the cell reselection (608), starting the idle mode measurement duration timer (606); 4. The method of claim 1, further comprising: performing (606) idle mode measurements according to the first measurement configuration while the idle mode measurement duration timer is running.

5. 5. The method of claim 1, further comprising: performing (608) cell reselection measurements on the one or more overlapping carriers of the first set of carriers according to the first measurement configuration while in the dormant state before performing (610) the cell reselection.

6. a particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers; the first measurement configuration for the particular carrier in the first cell is different from the second measurement configuration for the particular carrier in the second cell; In response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (a) retaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration; maintaining the first measurement configuration for the particular carrier (612-1A1); and ignoring (612-1A2) the second measurement configuration for the particular carrier.

7. a particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers; the first measurement configuration for the particular carrier in the first cell is different from the second measurement configuration for the particular carrier in the second cell; In response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; replacing the first measurement configuration for the specific carrier with the second measurement configuration for the specific carrier (612-1B1); and performing measurements on the specific carrier according to the second measurement configuration for the specific carrier (612-1B2).

8. a particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers; the first measurement configuration for the particular carrier in the first cell is different from the second measurement configuration for the particular carrier in the second cell; 6. The method of claim 1, wherein in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (c) stopping or pausing performance of measurements on a particular carrier comprises: stopping performance of measurements (612-1C1) for the particular carrier, including idle mode measurements and, if applicable, inter-frequency mobility measurements.

9. The method of claim 8 , further comprising clearing the first and second measurement configurations for the particular carrier.

10. a particular carrier is an overlapping carrier in both the first set of carriers and the second set of carriers; the first measurement configuration for the particular carrier in the first cell is different from the second measurement configuration for the particular carrier in the second cell; 6. The method of claim 1, wherein in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (c) stopping or pausing performance of measurements on a particular carrier comprises pausing performance of measurements (612-1D1) for the particular carrier, including idle mode measurements and, if applicable, inter-frequency mobility measurements.

11. 11. The method of claim 6, wherein, for the specific carrier, the inconsistency between the first measurement configuration for the specific carrier and the second measurement configuration for the specific carrier comprises an inconsistency between a broadcasted measurement configuration for the specific carrier of the first cell and a broadcasted measurement configuration for the specific carrier of the second cell.

12. a particular carrier is in the first set of carriers as an overlapping carrier but is not in the second set of carriers as an overlapping carrier; In response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (a) retaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration; continuing to perform idle mode measurements on the particular carrier according to the first measurement configuration for the particular carrier (612-2A1); and performing measurements for cell reselection for the particular carrier according to the second measurement configuration (612-2A2).

13. a particular carrier is in the first set of carriers as an overlapping carrier but is not in the second set of carriers as an overlapping carrier; 6. The method of claim 1, wherein in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (b) replacing a measurement configuration of the first measurement configuration with an inconsistent measurement configuration of the second measurement configuration comprises: stopping (612-2B1) performance of measurements, including both idle mode measurements and inter-frequency mobility measurements, for the particular carrier.

14. a particular carrier is in the first set of carriers as an overlapping carrier but is not in the second set of carriers as an overlapping carrier; 6. The method of claim 1, wherein in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (c) stopping or pausing performance of measurements on a specific carrier comprises pausing performance of measurements (612-2C1), including both idle mode measurements and inter-frequency mobility measurements, for the specific carrier.

15. a particular carrier is in the first set of carriers as a non-overlapping carrier; the particular carrier is in the second set of carriers as an overlapping carrier; 6. The method of claim 1, wherein, in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (a) maintaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration comprises: performing measurements on the specific carrier in accordance with the first measurement configuration for the specific carrier (612-3A1).

16. 16. The method of claim 15, wherein the first measurement configuration includes a dedicated measurement configuration for the particular carrier received from the first cell, and performing measurements on the particular carrier in accordance with the first measurement configuration for the particular carrier includes performing measurements on the particular carrier in accordance with the dedicated measurement configuration for the particular carrier received from the first cell.

17. a particular carrier is in the first set of carriers as a non-overlapping carrier; the particular carrier is in the second set of carriers as an overlapping carrier; In response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; replacing the first measurement configuration for the specific carrier with the second measurement configuration for the specific carrier (612-3B1); and performing measurements on the specific carrier according to the second measurement configuration for the specific carrier (612-3B2).

18. the first measurement configuration includes a dedicated measurement configuration for the particular carrier received from the first cell; the second measurement configuration includes a broadcasted measurement configuration for the particular carrier received from the second cell; 18. The method of claim 17, wherein replacing the first measurement configuration for the specific carrier with the second measurement configuration for the specific carrier comprises replacing the dedicated measurement configuration for the specific carrier received from the first cell with the broadcast measurement configuration for the specific carrier received from the second cell.

19. a particular carrier is in the first set of carriers as a non-overlapping carrier; the particular carrier is in the second set of carriers as an overlapping carrier; In response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; performing idle mode measurements on the specific carrier according to the first measurement configuration for the specific carrier (612-3C1); and performing inter-frequency mobility measurements for the specific carrier according to the second measurement configuration for the specific carrier (612-3C2).

20. the first measurement configuration includes a dedicated measurement configuration for the particular carrier received from the first cell; the second measurement configuration includes a broadcasted measurement configuration for the particular carrier received from the second cell; performing idle mode measurements on the specific carrier in accordance with the first measurement configuration for the specific carrier comprises performing idle mode measurements on the specific carrier in accordance with the dedicated measurement configuration for the specific carrier received from the first cell; 20. The method of claim 19, wherein performing inter-frequency mobility measurements on the specific carrier in accordance with the second measurement configuration for the specific carrier comprises performing inter-frequency mobility measurements on the specific carrier in accordance with the broadcasted measurement configuration for the specific carrier received from a source cell.

21. a particular carrier is in the first set of carriers as a non-overlapping carrier; the particular carrier is in the second set of carriers as an overlapping carrier; 6. The method of claim 1, wherein in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (c) stopping or pausing performance of measurements on a particular carrier comprises: stopping performance of idle mode measurements for the particular carrier (612-3D1).

22. a particular carrier is in the first set of carriers as a non-overlapping carrier; the particular carrier is in the second set of carriers as an overlapping carrier; 6. The method of claim 1, wherein in response to the one or more inconsistencies between the first measurement configuration and the second measurement configuration, (c) stopping or pausing performance of measurements on a particular carrier comprises pausing performance of measurements (612-3E1), including both idle mode measurements and inter-frequency mobility measurements, for the particular carrier.

23. A wireless device (512; 1000) for idle mode measurements while the wireless device (512; 1000) is in an idle or inactive state, comprising: Obtaining (600 and / or 602) a first measurement configuration for a first set of carriers in a first cell, the first set of carriers comprising: one or more overlapping carriers, which are carriers configured for both idle mode measurements and inter-frequency mobility measurements; one or more non-overlapping carriers that are configured for idle mode measurements but not for inter-frequency mobility measurements; or Obtaining a first measurement configuration (600 and / or 602) that includes both one or more overlapping carriers and one or more non-overlapping carriers; Transitioning to a dormant state (604); In the dormant state, performing cell reselection from the first cell to a second cell while an idle mode measurement duration timer is running (610); Obtaining (610) a second measurement configuration for a second set of carriers from the second cell, the second set including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers; one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration, (a) retaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration; (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; or (c) stopping or pausing measurements on a particular carrier, wherein the first measurement configuration for the particular carrier is inconsistent with the second measurement configuration for the particular carrier. and performing one or more actions (612) including:

24. The wireless device (512; 1000) of claim 22, wherein said wireless device (512; 1000) is further adapted to perform a method according to any one of claims 2 to 23.

25. A wireless device (512; 1000) for idle mode measurements while the wireless device (512; 1000) is in an idle or inactive state, comprising: one or more transmitters (1008); one or more receivers (1010); a processing circuit (1002) associated with the one or more transmitters (1008) and the one or more receivers (1010), wherein the processing circuit (1002) transmits to the wireless device (512; 1000): Obtaining (600 and / or 602) a first measurement configuration for a first set of carriers in a first cell, the first set of carriers comprising: one or more overlapping carriers, which are carriers configured for both idle mode measurements and inter-frequency mobility measurements; one or more non-overlapping carriers that are configured for idle mode measurements but not for inter-frequency mobility measurements; or Obtaining a first measurement configuration (600 and / or 602) that includes both one or more overlapping carriers and one or more non-overlapping carriers; Transitioning to a dormant state (604); In the dormant state, performing cell reselection from the first cell to a second cell while an idle mode measurement duration timer is running (610); Obtaining (610) a second measurement configuration for a second set of carriers from the second cell, the second set including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers; one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration, the one or more actions comprising: (a) retaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration; (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; or (c) stopping or pausing measurements on a particular carrier, wherein the first measurement configuration for the particular carrier is inconsistent with the second measurement configuration for the particular carrier. and performing one or more actions (612) including:

26. 23. A computer program comprising instructions which, when executed on at least one processor, cause said at least one processor to perform the method of any one of claims 1 to 22.

27. 27. A computer readable storage medium containing a computer program according to claim 26.

28. A non-transitory computer-readable medium comprising instructions executable by a processing circuit (1002) of a wireless device (512; 1000), whereby said wireless device (512; 1000) Obtaining (600 and / or 602) a first measurement configuration for a first set of carriers in a first cell, the first set of carriers comprising: one or more overlapping carriers, which are carriers configured for both idle mode measurements and inter-frequency mobility measurements; one or more non-overlapping carriers that are configured for idle mode measurements but not for inter-frequency mobility measurements; or Obtaining a first measurement configuration (600 and / or 602) that includes both one or more overlapping carriers and one or more non-overlapping carriers; Transitioning to a dormant state (604); In the dormant state, performing cell reselection from the first cell to a second cell while an idle mode measurement duration timer is running (610); Obtaining (610) a second measurement configuration for a second set of carriers from the second cell, the second set including one or more overlapping carriers, one or more non-overlapping carriers, or both one or more overlapping carriers and one or more non-overlapping carriers; one or more actions in response to one or more inconsistencies between the first measurement configuration and the second measurement configuration, (a) retaining a measurement configuration of the first measurement configuration that is inconsistent with a measurement configuration of the second measurement configuration; (b) replacing a measurement configuration from the first measurement configuration with an inconsistent measurement configuration from the second measurement configuration; or (c) stopping or pausing measurements on a particular carrier, wherein the first measurement configuration for the particular carrier is inconsistent with the second measurement configuration for the particular carrier. and performing (612) one or more actions, including:

Images