Measurement reporting

Abstract

There is provided a method performed by a wireless device. The method comprises measuring (302) one or more signals. The one or more signals are associated with one or more cells, and the one or more cells comprise one or more candidate cells for handover of the wireless device. The method comprises determining (304), based on the measurement of the one or more signals, that at least one first signal of the one or more signals meets a first criterion for providing a report to a network node of a serving cell of the wireless device. The report comprises first information indicative of the measurement of the one or more signals, and the wireless device is configured with a first resource for transmitting the report. The method comprises, if (306) a size of the first resource is inadequate for transmitting the report, initiating transmission of a first truncated report.

Description

MEASUREMENT REPORTINGTECHNICAL FIELD

[0001] The present disclosure relates to methods for measurement reporting, and devices and nodes configured to operate in accordance with those methods.BACKGROUND

[0002] Fifth generation (5G) new radio (NR) defines Layer 1 (Ll) / Layer 2 (L2) triggered mobility (LTM) to reduce the handover latency in the legacy Layer 3 (L3) handover by leveraging lower layer signaling. LTM is specified as a lower layer mobility procedure in Third Generation Partnership Project (3GPP) release (Rel-)18 in which a network node (e.g., a gNodeB (gNB)) receives measurement report(s), sent by a user equipment (UE), using LI signaling. The LI -measurement reports are utilized by a network to make different mobility -related decisions, such as an LTM cell switch execution to another target cell by sending an LTM cell switch Medium Access Control (MAC) control element (MAC CE) command.

[0003] Figure 1 is a signaling diagram illustrating an exchange of signals in a system according to an existing technique. In particular, Figure 1 illustrates a step-by-step process for performing LTM . The system of Figure 1 comprises a UE 102 and a gNB 104.

[0004] As illustrated by arrow 106 of Figure 1 the UE 102 sends a Measurement report(s) for measurements performed on one or more cells to the gNB 104. Based on the received measurement report(s), the gNB 104 decides to configure one or more LTM candidate cell(s). This procedure is referred to as LTM preparation.

[0005] As illustrated by arrow 108 of Figure 1, the gNB 104 transmits an radio resource control (RRC) Reconfiguration message to the UE 102 including the LTM candidate configuration(s).

[0006] As illustrated by arrow 110 of Figure 1, the UE 102 stores the LTM candidate configuration(s) and responds to the gNB 104 with an RRC Reconfiguration Complete message.

[0007] As illustrated at block 112 of Figure 1, the UE 102 may perform an early downlink (DL) synchronization with the LTM candidate cell(s) before LTM cell switch execution. The DL pre-synchronization is performed upon reception of a “Candidate Cell TCI States Activation / Deactivation MAC CE” by the UE 102 for the transmission configuration indication (TCI) states in the configured LTM candidate cell(s). Since the DL synchronization is already acquired before the LTM cell switch, the UE 102 is not required to wait for performingsynchronization signal block (SSB) reference signal (RS) measurements after moving to the target cell, which consequently reduces the mobility interruption.

[0008] As illustrated at block 114 of Figure 1, the UE 102 may also perform uplink (UL) pre-synchronization with the LTM candidate cell(s) if it receives a physical downlink control channel (PDCCH) order for early timing advance (TA) acquisition for those candidate cells. This means that the delay occurring in a random-access procedure after the baseline L3-moblity can be reduced from the overall mobility interruption in LTM.

[0009] As illustrated by arrow 116 of Figure 1, the UE 102 performs LI measurements on the configured LTM candidate cell(s) and transmits LI measurement reports to the gNB 104. LI measurement should be performed for the LTM candidate cell(s) which were configured in the step described with reference to arrow 108 of Figure 1.

[0010] As illustrated by arrow 118 of Figure 1, the gNB 104 decides to execute cell switch to a candidate target cell and transmits a MAC CE triggering cell switch by including a candidate configuration index of the LTM target cell. The UE 102 switches to the target cell and applies the LTM candidate configuration indicated by the candidate configuration index.

[0011] As illustrated at block 120 of Figure 1, the UE 102 performs a random-access procedure towards the target cell if the UE 102 does not have a valid timing advance (TA) of the target cell. Otherwise, if the UE 102 receives a valid TA value in the LTM cell switch command using early TA acquisition method (e.g. with reference to block 114 of Figure 1), the UE 102 is not required to perform random-access. Moreover, if the target cell TCI state, which is included in the LTM Cell Switch MAC CE, is different from the TCI state activated in early DL synchronization, the UE 102 may experience some delay in synchronization with the new TCI.

[0012] As illustrated at block 122 of Figure 1, the UE 102 completes the LTM cell switch procedure by sending a RRC Reconfiguration Complete message to the target cell. If the UE has performed a random-access procedure (e.g. as described with reference to block 120 of Figure 1), the UE 102 considers that LTM cell switch execution is successfully completed when the random-access procedure is successfully completed. For RACH-less LTM, the UE 102 considers that LTM cell switch execution is successfully completed when the UE 102 determines that the network has successfully received its first uplink (UL) data (e.g. as described in 3GPP technical specification (TS) 38.300, V18.0.0)

[0013] LTM Measurement Report Scheduling in Rel-18Rel-18 LTM defines four different types of measurement reporting related to the LTM procedures, e.g., early synchronization, LTM cell switch, provided in LTM reportingconfiguration. In Rel-18 LTM, the four types of measurement reporting include periodic reporting on physical uplink control channel (PUCCH), semi-persistent reporting on PUCCH, semi-persistent reporting on physical uplink shared channel (PUSCH), and aperiodic reporting (e.g. as described in 3GPP TS 38.331, V18.0.0). All these measurement reports are carried via uplink control information (UCI). Figure 2 shows LTM measurement report configurations for each of these reporting types. As illustrated in Figure 2, a periodic report in LTM can only be carried via PUCCH. The associated PUCCH resource configuration for report transmission, reporting periodicity, and offset are provided via RRC configuration in the serving cell. The semi-persistent report in LTM can be carried via PUSCH or PUCCH, and the transmission of semi-persistent report is activated via MAC CE. Aperiodic report in LTM can only be carried via PUSCH and the transmission of the aperiodic LTM channel state information (CSI) report is polled via downlink control information (DCI) (e.g. as described in 3GPP TS 38.331, V18.0.0).

[0014] Event-Triggered Reporting in LTM Rel-19

[0015] The Rel-19 work item for LTM aims to remove the limitations in Rel-18 LTM. Some of the objectives for the Rel. 19 work item description (WID) “NR mobility enhancements Phase 4” (RP-241515) are described below:Measurements related enhancements for the purpose of supporting LTM: [RAN2, RANI] • Measurement related enhancements are applicable to Intra-central unit (CU) master cell group (MCG) / secondary cell group (SCG) LTM and Inter-CU MCG / SCG LTM• Specify necessary components to support event triggered LI measurement reporting [RAN2, RANI]• Specify support for CSI reference signal (CSLRS) measurements for LTM procedures and enable CSLRS based beam management [RANI]• Specify CSI acquisition on candidate cell(s) based on CSLRS before or during LTM cell switch [RANI]As part of the “Measurements-related enhancements” in LTM, Rel-19 LTM defines “Event-triggered LI -Reporting” in LTM to address the following issues:• Excessive energy consumption at the UE due to high reporting overhead in periodic and semi-persistent LI -report types in LTM.• Inefficient use of UL resources in periodic and semi-persistent Ll-report types in LTM.• If the reporting interval in the periodic and semi-persistent LI -reports is increased in LTM to enhance energy and UL resource efficiency, it may result in handover failures and / or radio link failures (RLF) due to delayed updates in the channel quality of the network.• Aperiodic Ll-report in LTM may result in RLF if the report is not requested by the network in a timely manner.

[0016] It has been agreed that MAC CE shall be used as a report container to carry event-triggered LTM measurement reports.SUMMARY

[0017] According to recent agreements in the LTM Rel-19 “Measurement-related enhancements” work item (WI), it may be possible to support the transmission of an event-triggered LI measurement report via a truncated MAC CE. However, an available UL grant for sending the report may not be sufficient to carry an entire MAC CE report.

[0018] There has been no discussion and / or agreement on how to support a truncated MAC CE report. A further issue is that logic of truncated MAC CEs is different from that is typically used in MAC procedures. So far, a truncated MAC CE is used in cases where the UE has limited information to send to the network and, to prevent the UE from including a lot of padding bits within the MAC CE, a truncated MAC CE is specified.

[0019] In this case, the truncated MAC CE has been specified to help the UE to send measurements in a faster way, in case the UE has a lot of measurements to transmit, and all such measurements do not fit in the UL grant currently available to the UE. Therefore, in this case, the truncated MAC CE will carry an initial number of measurements, but most likely more measurements associated to the same measurement report will follow.

[0020] The lack of framework for reporting the remaining segments in the event-triggered measurement report MAC CE may cause different challenges.

[0021] For example, the UE has no information about the ways of transmitting the truncated MAC CE report if the available UL grant is not sufficient to carry the report.

[0022] Alternatively, or in addition, the network may get insufficient information about the LTM candidate cell beams / reference signals from the truncated MAC CE report and therefore cannot take suitable handover decisions based on the limited measurements, leading to handover and radio link failures.

[0023] However, currently the network is not aware if more measurements will be sent by the UE and / or how many more reports and / or report segments are to follow.

[0024] The network, upon receiving the truncated MAC CE report, may not be able to determine whether the event-triggered LI report contains all measurements or merely a subset of the measurements in a given truncated MAC CE report.

[0025] The network, upon receiving the truncated MAC CE report, may not be able to create an entire event-triggered LI measurement report from the measurements received in the truncated MAC CEs of the same event-triggered LI measurement reports.

[0026] Certain aspects of the disclosure and their embodiments may provide solutions to these or other challenges..

[0027] According to an aspect of the disclosure, there is provided a first method performed by a wireless device. The first method comprises measuring one or more signals. The one or more signals are associated with one or more cells, and the one or more cells comprise one or more candidate cells for handover of the wireless device. The first method comprises determining, based on the measurement of the one or more signals, that at least one first signal of the one or more signals meets a first criterion for providing a report to a network node of a serving cell of the wireless device. The report comprises first information indicative of the measurement of the one or more signals. The wireless device is configured with a first resource for transmitting the report. The first method comprises, if a size of the first resource is inadequate for transmitting the report, initiating transmission of a first truncated report towards the network node. The first truncated report comprises a first portion of the first information.

[0028] According to an aspect of the disclosure, there is provided a second method performed by a network node. The network node is a network node of a serving cell of a wireless device. The second method comprises configuring the wireless device to measure one or more signals. The one or more signals are associated with one or more cells. The one or more cells comprise one or more candidate cells for handover of the wireless device. The second method comprises configuring the wireless device to determine, based on the measurement of the one or more signals, that one or more conditions are fulfilled for providing a report to the network node. The report comprises first information indicative of the measurement of the one or more signals. The wireless device is configured with a first resource for transmitting the report. The second method comprises configuring the wireless device to, if a size of the first resource is inadequate for transmitting the report, initiate transmission of a first truncated report towards the network node. The first truncated report comprises a portion of the first information.

[0029] According to another aspect of the disclosure, there is provided a method performed by a system. The method performed by the system comprises the first method described earlier and the second method described earlier.

[0030] According to another aspect of the disclosure, there is provided a wireless device comprising processing circuitry configured to operate in accordance with the first method described earlier. In some embodiments, the wireless device may comprise at least one memory for storing instructions which, when executed by the processing circuitry, cause the wireless device to operate in accordance with the first method described earlier.

[0031] According to another aspect of the disclosure, there is provided a network node comprising processing circuitry configured to operate in accordance with the second method described earlier. In some embodiments, the network node may comprise at least one memory for storing instructions which, when executed by the processing circuitry, cause the network node to operate in accordance with the second method described earlier.

[0032] According to another aspect of the disclosure, there is provided a system. The system comprises: at least one wireless device, as described earlier, and at least one network node, as described earlier.

[0033] According to another aspect of the disclosure, there is provided a computer program comprising instructions which, when executed by processing circuitry, cause the processing circuitry to perform one or more of the first method described earlier, and the second method described earlier.

[0034] According to another aspect of the disclosure, there is provided a computer program product comprising a computer readable storage medium. The computer readable storage medium comprises instructions which are executable by processing circuitry to cause: a wireless device to perform the first method described earlier, and / or a network node to perform the second method described earlier.

[0035] Certain embodiments may provide one or more of the following technical advantage(s). The techniques described herein enable a wireless device (e.g. UE) and a network node to transmit and receive a truncated (e.g. MAC CE) report in event-triggered (e.g. Ll-measurement) reporting. Thus, the techniques described herein provide a complete framework for a wireless device (e.g. UE) to transmit one or more truncated (e.g. MAC CE) reports when an available transmission resource (e.g. UL grant) is not sufficient to carry the entire measurement report (e.g. MAC CE). The one or more truncated reports can be related to the same event-triggered LI -measurement report.

[0036] Moreover, the network (e.g. network node) can receive all relevant measurements and hence, complete information about the channel quality of the beam(s) / reference signal(s) in LTM candidate cells.

[0037] Advantageously, in some examples, the network (e.g. network node) can be informed of an expected number of truncated (e.g. MAC CE) report(s) which are to be transmitted by the wireless device (e.g. UE) to create an entire measurement report.BRIEF DESCRIPTION OF THE DRAWINGS

[0038] For a better understanding of the embodiments of the present disclosure, and to show how it may be put into effect, reference will now be made, by way of example only, to the accompanying drawings, in which:

[0039] Figure 1 is a signaling diagram illustrating an exchange of signals in an LTM signaling procedure;

[0040] Figure 2 is an example of an LTM measurement report configuration for a plurality of reporting types;

[0041] Fig. 3 is a flow chart illustrating a method performed by a wireless device in accordance with some embodiments;

[0042] Fig. 4 is a flow chart illustrating a method performed by a network node in accordance with some embodiments;

[0043] Fig. 5 shows an example of a communication system in accordance with some embodiments;

[0044] Fig. 6 shows an example of another communication system in accordance with some embodiments;

[0045] Fig. 7 shows a wireless device in accordance with some embodiments;

[0046] Fig. 8 shows a network node in accordance with some embodiments; and

[0047] Fig. 9 is a block diagram illustrating a virtualization environment in which functions implemented by some embodiments may be virtualized.DETAILED DESCRIPTION

[0048] Some of the embodiments contemplated herein will now be described more fully with reference to the accompanying drawings. Embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art.

[0049] Figure 3 depicts a method in accordance with particular embodiments. The method may be performed by a wireless device (e.g. UE 512, station 612 or wireless device 700 as described later with reference to Figures 5, 6 and 7 respectively). The wireless device may be a UE according to some examples. The wireless device may be referred to herein as a UE. The method performed by the wireless device can be configured by the network referred to herein. For example, as described with reference to Figure 4, the network node referred to herein can configure the wireless device to perform the method as described with reference to Figure 3.

[0050] The method begins at step 302, in which the wireless device measures one or more signals. The one or more signals are associated with one or more cells. The one or more cells comprise one or more candidate cells for handover of the wireless device. Measuring the one or more signals may comprise performing measurements on the one or more signals. The one or more signals may comprise one or more beams. Alternatively, or in addition, the one or more signals may comprise one or more reference signals. The one or more signals may comprise one or more SSBs of a (e.g. LTM) candidate cell and / or of the serving cell of the wireless device. The wireless device may perform the measurement of the one or more signals according to a measurement configuration (e.g. that the wireless device receives). The one or more candidate cells may comprise one or more LTM candidate cells (e.g. one or more LTM cells), as defined herein. The wireless device may be configured with the one or more candidate cells (e.g. by the network node referred to herein). For example, the wireless device may receive a candidate cell configuration from the network node.

[0051] At step 304, the wireless device determines, based on the measurement of the one or more signals, that at least one first signal of the one or more signals meets a first criterion for providing a report to a network node of a serving cell of the wireless device. The report comprises first information indicative of the measurement of the one or more signals. The wireless device is configured with a first resource for transmitting the report. The first criterion may be met if one or more conditions, as defined herein, are met (e.g. for an event).

[0052] At step 306, if a size of the first resource is inadequate for transmitting the report, the wireless device initiates transmission of a first truncated report towards the network node. The first truncated report comprises a first portion of the first information, as defined herein. The report referred to herein may be an event-triggered LTM measurement report. In some examples, the first resource may be inadequate for transmitting the report if the available (e.g. data) size of the first resource is not enough to accommodate the entire report (e.g. an event-triggered LI measurement report MAC CE). In some examples, the first resource may be aUL grant resource. In these examples, the first resource may be inadequate for transmitting the report if the (e.g. available) UL grant resource is unable (e.g. not large enough) to carry the entire report (e.g. MAC CE). In some examples, the first resource referred to herein may be a PUS CH resource

[0053] A truncated report may be understood to refer to a segment and / or a fraction of the report referred to herein. As described herein, the report comprises first information. As also described herein, the first truncated report comprises a first portion of the first information. As such, the first portion of the first information can correspond to a fraction and / or a segment of the first information. For example, the first portion can correspond to only some of the first information. As described herein, in some examples, the wireless device may initiate transmission of a plurality of truncated reports towards the network node in order to transmit the entirety of the first information. The report referred to herein may be a measurement report. For example, the report referred to herein may be a MAC CE report. Any truncated report (e.g. the first truncated report) referred to herein may be a (e.g. truncated) measurement report and / or a MAC CE report.

[0054] The measurement of the one or more signals referred to herein may be performed according to a measurement configuration. The measurement configuration may be an LTM measurement resource configuration. The measurement configuration may indicate a set of (e.g. reference) signals to measure (e.g., each indicated by an SSB index and its associated LTM candidate cell ID). In some examples, the wireless device may receive the measurement configuration from the network node referred to herein.

[0055] The first criterion may be associated with one or more conditions to be fulfilled by the one or more signals. The first criterion may be met if the one or more conditions are fulfilled (e.g. based on measurement of the one or more signals). The first criterion may be comprised in and / or associated with a (e.g. LTM) reporting configuration. The reporting configuration may comprise information indicative of one or more (e.g. LTM) events. The first criterion may be considered to be met if one or more of the events are determined (e.g. by the wireless device) to have occurred. As such, the report referred to herein may be an event-triggered LTM measurement report. The one or more events may be associated with one or more conditions to be evaluated by the UE (e.g. based on the measurement of the one or more signals). In some examples, the wireless device may receive information indicative of the first criterion from the network node. For example, the wireless device may determine the first criterion based on a reporting configuration, as defined herein, received from the network node.

[0056] In some examples, the wireless device may select the first portion of the first information to be comprised in the first truncated report. For example, the wireless device (e.g. UE) may select (e.g. release and / or remove) certain signals and / or measurements of the one or more signals, as defined herein, to be included in the first truncated report. In some examples, the wireless device may select one or more LTM candidate cell beam measurements and / or one or more LTM candidate reference signal measurements to be included in the first truncated report (e.g. if the entire report does not fit the first resource). If the wireless device determines to send the first truncated (e.g. MAC CE) report, the wireless device may select a subset of the available measurements (e.g. on beam(s) and / or reference signal(s)) for the first truncated report. In some examples, the wireless device can store (e.g. retain) the remaining measurements not included in the first truncated (e.g. MAC CE) report.

[0057] In some examples, the first portion of the first information may comprise measurement information corresponding to the at least one first signal, as defined herein. The first portion of the first information may only comprise measurement information corresponding to the at least one first signal, according to some examples. Thus, in some examples, the wireless device may only include the at least one signal that caused the first criterion to be met in the first truncated report.

[0058] In some examples, the first truncated report can comprise information indicative of an identifier of the at least one first signal. The identifier indicative of the identifier of the at least one first signal may comprise a Synchronization Signal Block (SSB) Resource Indicator (SSBRI) and / or a CSLRS Resource Indicator (CRI). Alternatively, or in addition, the first truncated report can comprise information indicative of an identifier indicative of the first criterion referred to herein. In some examples, the at least one first signal can comprise a beam and / or a triggered beam, as defined herein. As such, the first truncated report can comprise beam and / or triggered beam information. In scenarios in which the at least one first signal comprises a beam and / or a triggered beam, the first truncated report can comprise information indicative of an identifier of the beam and / or triggered beam (e.g. beam ID). In some examples, the first truncated report can comprise information indicative of an identifier indicative of the first criterion. For example, the first truncated report can comprise a configuration ID and / or an event configuration ID.

[0059] In some examples, the UE may only include reference signal measurements of triggered beam(s) (e.g. the beam(s) which fulfil an event condition(s) of an associated LTM event in a LTM reporting configuration which has pointers towards the measurement resource configuration, containing the triggered beam(s)). To measure this (e.g. in a test labenvironment), multiple simulations may be performed in which the wireless device is provided with at least a candidate configuration which comprises multiple reference signals to be measured. In this case, event condition(s) can be set so that there is always a sub-set of beams which would fulfill the event condition(s), and it would be observed whether the wireless device only reports the beam / reference signal measurements which have fulfilled the event.

[0060] In some examples, the wireless device may prioritize the transmission of signal (e.g. beam / reference signal) measurements which have fulfilled the event condition(s) of the triggering LTM event (e.g. met the first criterion). These signal measurements may be transmitted in a first X truncated MAC CE reports (where X is a positive integer), and if there are any other signal (e.g. non-triggered beam / reference signal) measurements, they can be transmitted in later truncated MAC CE reports.

[0061] To measure this (e.g. in a test lab environment), multiple simulations may be performed in which the UE is provided with at least a candidate configuration which can comprise multiple reference signals to be measured. In this case, event condition(s) can be set so that there is always a sub-set of beams which would fulfill the event condition(s) and another subset of beams which do not fulfil the event condition(s). The UE may first report the beam / reference signal measurements which have fulfilled the event condition(s) and then report the non-triggered beam / reference signal measurements in later truncated segments of the MAC CE report.

[0062] In some examples, selecting the first portion of the first information may comprise selecting the first portion of the first information based on a measurement quality of the one or more signals. The first portion may comprise measurement information corresponding to at least one second signal of the one or more signals. The at least one second signal can be associated with a highest measurement quality of the one or more signals. In some examples, the measurement quality of the one or more signals may be a LI - Reference Signal Received Quality (Ll-RSRQ), and / or be based on a Ll-Reference signal received power (Ll-RSRP). Thus, in some examples, the UE may sort the one or more signals (e.g. beam(s) / reference signal(s)) in decreasing order of their measurement quality (e.g., Ll-RSRP). The UE may and only report the best X beam / reference signal measurements in the first truncated (e.g. MAC CE) report (e.g. such that the first truncated report fits the first resource, such as an available UL grant for transmission). A number of truncated reports may be sent until a maximum possible event triggered measurement report size is reached.

[0063] To measure this (e.g. in a test lab environment), the UE may be provided with at least a candidate configuration which comprises multiple reference signals to be measured. Inthis case, some of the beams / reference signals may measure better than others (e.g., have higher Ll-RSRP). The UE can first report the beam / reference signal measurements with better quality in the first segments of the truncated MAC CE report. In some examples, the first truncated report can comprise information indicative of at least some of the one or more signals (e.g. the second signal). For example, the first truncated report can comprise information indicative of a Ll-RSRP associated with at least some of the one or more signals (e.g. the second signal).

[0064] In some examples, the wireless device may perform a (e.g. early) synchronization procedure with at least one first candidate cell of the one or more candidate cells. The first portion of the first information can comprise measurement information associated with at least one third signal. The at least one third signal can be associated with the at least one first candidate cell. The synchronization procedure may comprise a UL synchronization procedure, and / or a DL synchronization procedure. The synchronization procedure can be an early synchronization procedure. In some examples, the UE may only include signals and / or signal measurements (e.g. triggered or non-triggered beam(s) / reference signal(s)), for which an early UL and / or DL synchronization has been performed, in the first truncated (e.g. MC CE) report.

[0065] To measure this (e.g. in a test lab environment), multiple simulations may be performed in which the UE is provided with at least a candidate configuration which can comprise multiple reference signals to be measured. In this case, an early DL synchronization procedure could be triggered (e.g. activating a TCI state which is related to a beam) and / or an early UL synchronization procedure could be triggered for the candidate cell, and from the measurement report received by the UE it would be observed whether the UE has included the measurements (e.g., Ll-RSRP) for the beams / reference signals which were used in early UL / DL synchronization.

[0066] In some examples, the UE may determine (e.g. calculate) an average measurement on a (e.g. LTM) candidate cell and sort the candidate cells in a descending order according to the averaged measurements over the cell. The UE may (e.g. start to) include in the first truncated report the best candidate cell and all the signal(s) (e.g. beam(s)) related to this candidate cell. Additional truncated reports may be sent based on the second best (e.g. LTM) candidate cell, and so on. The average measurement on a (e.g. LTM) candidate cell can correspond to an average of the best N beams in the cell (where N is a positive integer). In some cases, if there is a single beam associated with the cell, the average measurement can correspond to the measurement of the single beam. In some scenarios, the average measurement may be an average measurement on the best beam in a cell.

[0067] In some examples, if the size of the first resource is adequate for transmitting the report, the wireless device may initiate transmission of the report towards the network node. The report comprises the first information, as defined herein. The size of the first resource can be adequate for transmitting the report if a data size of the first resource is greater than or equal to a data size of the first information. For example, if the first resource (e.g. available UL grant size) is sufficient to accommodate the entire report (e.g. event-triggered LI measurement report MAC CE), as defined herein, the wireless device may send the (e.g. complete) report. In some examples, the size of the first resource may be inadequate for transmitting the report if a data size of the first resource is less than a data size of the first information.

[0068] In some examples, the wireless device may separate the first information into the first portion of the first information, as defined herein, and a remaining portion of the first information. The first portion and the remaining portion can be different. The separation of the first information can be based on a (e.g. data) size of the first resource (e.g. a UL grant size). In some examples, the wireless device may store the remaining portion of the first information (e.g. in a memory of the wireless device). The UE may store (e.g. not discard) the remaining portion (e.g. comprising the rest of the LTM candidate cell beam(s) / reference signal(s) measurements) if the entire (e.g. MAC CE) report does not fit the available first resource (e.g. UL grant). The remaining portion (e.g. stored LTM candidate cell beam(s) / reference signal(s) measurement) can be sent in one or more additional truncated reports (e.g. a second truncated MAC CE) of the same (e.g. event-triggered LI measurement) report.

[0069] In some examples, if the size of the first resource is inadequate for transmitting the report, the wireless device may initiate transmission of one or more additional truncated reports towards the network node. The transmission of the one or more additional truncated reports can be initiated after transmission of the first truncated report. Each additional truncated report of the one or more additional truncated reports can comprise at least a part of the remaining portion of the first information. In some examples, the wireless device may determine a transmission priority for the one or more additional truncated reports. The transmission priority can be determined based on the at least the part of the remaining portion comprised in each additional truncated report of the one or more additional truncated reports.

[0070] In some scenarios, the UE may have an overall list of measured one or more signals (e.g. LTM candidate cell beam(s) / reference signal(s) measurements) and, in scenarios in which the first resource is not sufficient to send all the measurements within one report, these measurements can be split into multiple reports. In this case, each truncated measurementreport can include a subset of the first information (e.g. overall LTM candidate cell beam(s) / reference signal(s) measurements). In some examples, a (e.g. specific) measurement may be included only in one (e.g. a single) truncated report. For example, the same measurement(s) may not be comprised (e.g. repeated) in two (e.g. different) truncated (e.g. MAC CE) reports.

[0071] The UE may prioritize the (e.g. reference) signal measurements of triggered beam(s) or beam(s) which fulfil event condition(s) of an associated LTM event in a LTM reporting configuration which has pointers towards a measurement resource configuration, containing the triggered beam(s) for transmission in the truncated MAC CE report.

[0072] In some examples, transmission priority can be determined based on a measurement quality associated with measurement information comprised in the remaining portion of the first information. The UE can sort the beam(s) / reference signal(s) in a decreasing order of their measurement quality (e.g., Ll-RSRP) and prioritize the best X beam / reference signal measurements for transmission in the first N truncated (e.g. MAC CE) reports.

[0073] In some examples, the transmission priority can be determined based on a UL synchronization status and / or a DL synchronization status of measurement information comprised in the remaining portion of the first information. The UE can prioritize, for transmission in the first N truncated (e.g. MAC CE) reports, the corresponding signal measurements (e.g. of triggered or non-triggered beam(s) / reference signal(s)) for which an early UL and / or DL synchronization has been performed.

[0074] In some examples, the transmission priority can be determined based on the fulfillment of an event condition status of measurement information comprised in the remaining portion of the first information. In some examples, the transmission priority can be determined based on a cell associated with measurement information comprised in the remaining portion of the first information.

[0075] The wireless device may initiate transmission of the one or more additional truncated reports based on the determined transmission priority.

[0076] The UE may determine to send the first truncated (e.g. MAC CE) report (e.g. as indicated above, when the UL grant size is not sufficient to send the complete report), and the UE may select (e.g. to be included in the first truncated report) a first subset of available measurements on the one or more signals (e.g. beam(s) / reference signal(s) of the associated resource configuration). The wireless device may store (e.g. keep) a second subset of measurements (e.g. remaining measurements) for signals of the one or more signals (e.g. beam(s) / reference signal(s)) not included in the first truncated report.

[0077] The UE can include measurements of the second subset (e.g. of beam(s) / reference signal(s)) (remaining measurements) in a second truncated (e.g. MAC CE) report. The UE can include a subset of the measurements on the second subset (e.g. of beam(s) / reference signal(s)) (remaining measurements) in a second truncated MAC CE report. The UE can include the remaining measurements in the second truncated (e.g. MAC CE) report if the UE has an adequate transmission resource to do so, otherwise the UE may perform a further selection of measurements, in the manner described herein.

[0078] The UE may store the remaining signal (e.g. LTM candidate cell beam(s) / reference signal(s)) measurements (e.g. when the UE selects a first subset to be transmitted in the first truncated (e.g. MAC CE) report) and use them for filtering later measurements on the same resource set and / or for later reporting. For example, in case a later UL grant is sufficient to fit more measurements and / or in case of an event triggered periodic reporting, remaining signal measurements can be transmitted in a further instance of the same truncated MAC CE report. The UE can send a first subset in a first truncated (e.g. MAC CE) report, and a second subset in a second truncated (e.g. MAC CE) report, and so on.

[0079] The associated resource configuration can configure the UE to select reference signals / beams among the reference signals / beams of the LTM candidate cells configured in the same LTM resource configuration with the resource configuration identity included in the reporting configuration in which the event-triggered LI report is configured.

[0080] In some examples, the one or more signals referred to herein may comprise one or more synchronization signal blocks (SSBs) and / or one or more channel state information reference signals (CSLRS). In some examples, the one or more cells may comprise the serving cell of the wireless device. In some examples, the one or more signals may comprise one or more of a reference signal, and a beam. In some examples, initiating transmission of the first truncated report cam be performed using the first resource referred to herein.

[0081] In some examples, the first truncated report can comprise information indicative of whether the first truncated report is a truncated report. The first truncated report can comprise information indicative of whether one or more additional truncated reports are to be transmitted by the wireless device. The information indicative of whether one or more additional truncated reports are to be transmitted can be referred to as a separate indication. The UE can use the separate indication in the first (e.g. event-triggered measurement) truncated report to notify the network (e.g. the network node) that the first truncated report is only one of a total number of truncated (e.g. MAC CE) reports to be sent.

[0082] The information indicative of whether one or more additional truncated reports are to be transmitted by the wireless device can comprise a flag indicator, information indicative of a total number of truncated reports to be transmitted by the wireless device, and / or information indicative of an amount of the first information.

[0083] In some examples, the separate indication can be a one-bit field (e.g. a flag). The one-bit field can be set to “1” to indicate that the given truncated report is a first or intermediate report of a total number of truncated (e.g. MAC CE) reports. As such, the one-bit field can indicate to the network whether the UE will continue transmitting remaining truncated (e.g. MAC CE) reports. The one-bit field (e.g. flag) can be set to “0” to either indicate that the entire (e.g. MAC CE) report has been transmitted or that a truncated (e.g. MAC CE) report is a last one to be transmitted. Thus, the one-bit field can be used to indicate that all of the first information has been transmitted via one or more truncated reports.

[0084] The separate indication, as referred to herein, may comprise information indicative of a total number of truncated (e.g. MAC CE) reports to be transmitted and / or a total number of signal measurements (e.g. LTM candidate cell beam(s) / reference signal(s) measurements) to be transmitted. In this way, the network can keep track of the total amount of truncated (e.g. MAC CE) reports and / or signal measurements (e.g. LTM candidate cell beam(s) / reference signal(s) measurements) that have been sent. For example, the network node may determine which truncated report is the last truncated report (e.g. based on the separate indication). In some examples, the network may (e.g. continue to) indicate the first and last truncated (e.g. MAC) report explicitly. As such, the network may not need to determine itself which is the last truncated report.

[0085] The UE can be configured with a parameter indicating a number of report instances for a given reporting configuration (e.g. in case of event-triggered periodic report). When an event is triggered, the UE can send a first truncated (e.g. MAC CE) report, then after the periodicity duration another one, and so on, until the configured number of report instances are reached. In scenarios in which the UE determines that the n-th report is a truncated report, and measurements are available and not selected to be transmitted in that truncated report, the UE can include at least one of these remaining measurements in the (n+l)-th report.

[0086] As described herein, the one or more candidate cells can comprise one or more LTM candidate cells.

[0087] In some examples, the measurement configuration referred to herein may comprise information identifying the one or more signals, as defined herein. The information identifying the one or more signals can comprise an SSB index associated with a signal of the one or moresignals, a reference signal (RS) index associated with a signal of the one or more signals, a channel state information reference signal (CSI-RS) index associated with a signal of the one or more signals, and / or a cell ID associated with a cell of the one or more cells.

[0088] In some examples, measuring the one or more signals can comprise performing one or more LI measurements on the one or more signals.

[0089] Figure 4 depicts a method in accordance with particular embodiments. The method may be performed by a network node (e.g. network node 510, access point 610 or network node 800 as described later with reference to Figures 5, 6 and 8 respectively). The method performed by the network node can involve configuring the wireless device, as referred to herein, to perform the method as described with reference to Figure 3. The network node may configure the wireless device to perform any and / or all of the method steps performed by the wireless device as described herein. The network node referred to herein can be a network node of a serving cell of the wireless device referred to herein.

[0090] The method begins at step 402, in which the network node configures the wireless device. Configuring the wireless device may comprise initiating transmission of configuration information towards the wireless device. The configuration information may comprise instructions which can be executed by the wireless device to perform the method described herein in respect of the wireless device. The network node can configure the wireless device to measure one or more signals. The one or more signals are associated with one or more cells, as defined herein. The one or more cells comprise one or more candidate cells for handover of the wireless device, as defined herein.

[0091] The network node can configure the wireless device to determine, based on the measurement of the one or more signals, that one or more conditions are fulfilled for providing a report to the network node. The report comprises first information indicative of the measurement of the one or more signals, as defined herein. The wireless device is configured with a first resource for transmitting the report, as defined herein.

[0092] The network node can configure the wireless device to, if a size of the first resource is inadequate for transmitting the report, initiate transmission of a first truncated report towards the network node. The first truncated report comprises a portion of the first information, as defined herein.

[0093] In some examples, the network node may initiate transmission of a measurement configuration towards the wireless device, as defined herein. In some examples, the network node may initiate transmission of information indicative of the first criterion towards the wireless device, as defined herein. In some examples, the network node may, if the size of thefirst resource is inadequate for transmitting the report, receive the first truncated report from the wireless device, as defined herein. In some examples, the network node may select the one or more candidate cells, as defined herein. In some examples, the network node may initiate transmission of information indicative of the one or more candidate cells towards the wireless device. Thus, the network node may configure the wireless device with the one or more candidate cells. In some examples, the network node may configure the wireless device to select the first portion of the first information to be comprised in the first truncated report, as defined herein.

[0094] The network node may configure the wireless device to, if the size of the first resource is adequate for transmitting the report, initiate transmission of the (e.g. entire) report, as defined herein, towards the network node. If the size of the first resource is adequate for transmitting the report, the network node may receive the report from the wireless device.

[0095] The network node may configure the wireless device to separate the first information into the first portion of the first information and a remaining portion of the first information, as defined herein.

[0096] The network node may configure the wireless device to store the remaining portion of the first information, as defined herein. The network node may configure the wireless device to, if the size of the first resource is inadequate for transmitting the report, initiate transmission of one or more additional truncated reports, as defined herein, towards the network node. The transmission of the one or more additional truncated reports can be initiated after transmission of the first truncated report, and each additional truncated report of the one or more additional truncated reports can comprise at least a part of the remaining portion of the first information.

[0097] If the size of the first resource is inadequate for transmitting the report, the network node may receive the one or more additional truncated reports from the wireless device. The network node may configure the wireless device to determine a transmission priority for the one or more additional truncated reports, as defined herein.

[0098] The network node may configure the wireless device with the one or more candidate cells (e.g. one or more LTM candidate cells), as defined herein. The network node can configure the wireless device with an LTM measurement resource configuration which indicates a set of one or more signals (e.g. one or more reference signals) to measure (e.g. each indicated by an SSB index and its associated LTM candidate cell ID). The network node can configure the wireless device with an LTM reporting configuration configuring one or more LTM events (e.g. an event-triggered LTM measurement report). Each event can be associated with one or more conditions to be evaluated by the wireless device.

[0099] The network node can indicate to the UE to only include the reference signal measurements of triggered beam(s) (e.g. beam(s) which fulfil the event condition(s) of the associated LTM event in LTM reporting configuration which has pointers towards the measurement resource configuration, containing the triggered beam(s)) in the first truncated report.

[0100] In some examples, the network node may indicate to the UE to sort the beam(s) / reference signal(s) in a decreasing order of their measurement quality (e.g., Ll-RSRP) and only report the best Abeam / reference signal measurements in the first truncated MAC CE report such that the first truncated MAC CE report fits the available first resource (e.g. UL grant for transmission).

[0101] In some examples, the network node may configure the UE to report on the triggered or non-triggered beam(s) / reference signal(s) for which an early UL and / or DL synchronization has been performed.

[0102] In some examples, the network node may configure the UE to calculate the average measurement on an LTM candidate cell and sort the LTM candidate cells in a descending order according to the averaged measurements over the LTM cell such that the best LTM candidate cell and all the beam(s) related to this LTM candidate cell first is included first, and then the second LTM candidate cell and so on.

[0103] The network node referred to herein may be a source gNB-DU, a source gNB-CU, and / or a source gNB.

[0104] The methods described herein are applicable to LTM. As mentioned herein L1 / L2 based inter-cell mobility (LTM) is defined in 3GPP Release 18. It will be understood that, herein, the wording L1 / L2 based inter-cell mobility (LTM) may be used interchangeably with one or more of the wording L1 / L2 mobility, Ll-mobility, LI based mobility, Ll / L2-centric inter-cell mobility, L1 / L2 inter-cell mobility Ll / L2-Triggered Mobility (LTM), Lower-layer triggered Mobility, and LTM (e.g. as more widely used). In some examples, the UE may receive a lower layer signaling from the network (e.g., a MAC Control Element - MAC CE). The lower layer signaling may be received from the network node, as defined herein. The lower layer signaling may indicate to the UE a change (e.g. a switch and / or activation) of the serving cell (i.e., PCell or PSCell) of the UE. In some examples, a lower layer signaling can comprise a message and / or signaling communicated (e.g. carried) via a lower layer protocol. The lower layer signaling may be referred to as an L1 / L2 inter-cell mobility execution command or LTM cell switch command. As described herein, the wireless device (e.g. UE) can be configured (e.g. by the network) with one or more LTM candidate cell configurations. For example, thewireless device may receive a (e.g. RRC Reconfiguration) message comprising information indicative of at least one LTM candidate cell configuration. The wireless device may receive the message from the network node referred to herein. Thus, in some examples, the network node may initiate transmission of a message comprising information indicative of the at least one LTM candidate cell configuration towards the wireless device. In this way, the network node may configure the wireless device with at least one LTM candidate cell (e.g. a candidate cell for handover of the wireless device). An LTM candidate cell configuration may include parameters in an IE CellGroupConfig per candidate cell and / or an embedded RRC Reconfiguration per LTM candidate cell. An LTM configuration may include one or multiple elements. Each element can comprise a configuration of one aspect of LTM. The elements may include any one or more of the following:• LTM candidate cell configuration(s)• Inter-CU LTM candidate cell configuration(s)• Lower layer information. The lower layer information may comprise a physical layer configuration, a MAC layer configuration, an RLC layer configuration, a Cell Group configuration, and / or a serving cell configuration• Higher layer information. The higher layer information may comprise one or more RRC protocol parameters, such as timer values, a PDCP layer configuration, a radio bearer configuration, and / or measurement configuration• Configuration of measurements for LTM• Configuration for measurement reports for LTM• CSI resource configuration(s) for LTM• CSI report configuration for LTM• Configurations of early synchronization procedures. The configurations of early synchronization procedures may comprise configurations for DL pre-sync for LTM, such as configurations for early TCI state activation. In some examples, configurations of early synchronization procedures may comprise configurations for UL pre-sync for LTM, such as configurations for reception of PDCCH ordered triggered preamble transmission and reception of TA• Configurations for the execution of an LTM cell switch procedure for a given LTM candidate cell configuration or inter-CU LTM candidate cell configuration (e.g. whether to perform random access procedure, whether to perform RLC reestablishment, or MACreset, or PDCP recovery), a timer value, configured UL grants, and / or dedicated RA preambles• A configuration which the UE needs to start to operate accordingly when it performs an LTM cell switch procedure to an LTM candidate cell which is controlled by a different base station, e.g. gNB, from the current source base station (e.g. serving gNB of the UE) • Information to perform security key refresh (e.g. the RRC IE MasterKeyUpdate or a RRC IE RadioBearerConfig) that includes SecurityConfig with Security AlgorithmConfig • Indication to perform a full configuration (e.g. the RRC field fullConfig)• Indication to perform L2 re-establishment, such as an indication to perform PDCP reestablishment for one or multiple bearers.

[0105] An LTM candidate cell can be a cell on which the UE may be configured to perform (e.g. lower layer) measurements. The measurements may be a Layer 1 (LI) reference signal received power (RSRP) measurement, on a synchronization signal block (SSB), and / or a channel state information reference signal (CSLRS) measurement (e.g. an LTM CSI measurement). Lower layer measurements can be measurements reported to support lower layer procedures, such as beam management, TCI state activations and / or deactivations, early timing advance (TA) acquisition, and / or link adaptation. Lower layer measurements may not be filtered based on Layer 3 (L3) parameters. In some examples, lower layer measurements may (or may not) experience some filtering based on lower layer parameters. As described herein, the wireless device (e.g. UE) can report the measurements to the network (e.g. network node referred to herein). As such, the network (e.g. network node) may determine (e.g. take an educated decision) on which beam (e.g. TCI state) and / or cell the wireless device (e.g. UE) is to be switched to. In the case of an LTM fast failure recovery, when a failure is detected, the UE may select a cell, and when the cell is an LTM candidate cell, the UE does not have to perform re-establishment but can instead perform an LTM cell switch towards the selected LTM candidate cell. The UE may perform the cell switch by applying the LTM candidate cell configuration associated with the selected LTM candidate cell.

[0106] An LTM cell switch procedure and / or LTM execution procedure may be triggered in the UE by reception of an LTM cell switch command (e.g. LTM Cell Switch MAC CE). In some cases, an LTM cell switch procedure and / or LTM execution procedure may be triggered in response to detection of a failure (e.g. in case of LTM fast failure recovery). A candidate cell, as referred to herein, may be an LTM candidate cell. An LTM candidate cell may be a cell that the UE is configured with when configured with L1 / L2 -triggered mobility. For example,a (e.g. LTM) candidate cell may be a cell the UE can move to in a (e.g. LTM) cell switch procedure (e.g. upon reception of an LTM cell switch command). A candidate cell may be referred to herein as a candidate cell(s), a candidate, a candidate target cell, an implied target cell, a mobility candidate, a non-serving cell, an additional cell, and / or a deactivated cell. A candidate cell may also pertain to a candidate cell in a 5G Radio Access Technology (e.g. NR) and / or a future 6G Radio Access Technology.

[0107] As described herein, the wireless device can measure one or more signals (e.g. one or more reference signals). The measurements performed by the wireless device may be lower layer measurements. The one or more (e.g. reference) signals on which lower layer measurements are performed can be provided in a LTM CSLSSB Resource Set, under LTM CSI Resource Configuration. A resource identifier for a reference signal resource, such as a serving cell or an LTM candidate cell SSB-Index or CSLRS -Re source ID, may uniquely identify the resource in the LTM configuration and among all the serving and LTM candidate cells. The resource identifier can be understood by both the UE and the serving gNB. The information identifying the one or more signals, as referred to herein, may comprise a resource identifier. In the context of LTM, an example of the reference signal resource identifier is described by the field LTM-CSI-SSB-ResourceSet in TS 38.331 vl8.2.0:LTM-CSI-SSB-ResourceSet-rl8 ::= SEQUENCE {ltm-CSI-SSB-ResourceList-rl8 SEQUENCE (SIZE (L.maxNrofLTM-CSI-SSB- ResourcesPerSet-rl8)) OF SSB-Index,ltm-CandidateIdList-rl8 SEQUENCE (SIZE (L.maxNrofLTM-CSI-SSB- ResourcesPerSet-rl8)) OF LTM-CandidateId-rl8,}

[0108] In the example illustrated above, the ith position of the list in the field Itm-CSL SSB-ResourceList can indicate the SSB ID of the reference signal resource, while the same ith position of the list in the field Itm-CandidateldList can indicate to which LTM candidate configuration index the SSB belongs.

[0109] A ‘measurement configuration’ is mentioned herein. The measurement configuration may correspond to an LTM resource configuration (and / or a resource set configuration) which the UE (e.g. wireless device) receives in an RRC Reconfiguration (or RRC Resume) message. Each ‘LTM resource’ to be measured and to be possibly reported (e.g.depending on further rules disclose herein) can correspond to a Reference Signal indication (e.g. an SSB index and / or a CSI-RS resource indication) and / or its associated LTM Candidate Identity (ID), to indicate a specific RS (e.g., SSB index) of an LTM candidate.

[0110] Herein, the measurement configuration (i.e. resource configuration, resource set configuration) can be associated with a reporting configuration (or LTM reporting configuration), as referred to herein. For example, an indication of a resource configuration (and / or a resource set configuration) can be included in a reporting configuration. For example, when the reporting configuration is configured in an IE LTM-ReportConfig, the instance of the IE LTM-ReportConfig can include a resource configuration (and / or resource set configuration) identifier, pointing to the associated measurement configuration.[OHl] The reporting configuration referred to herein may be referred to as a measurement reporting configuration. The reporting configuration can correspond to an LTM reporting configuration the UE receives in an RRC Reconfiguration (or RRC Resume) message, in which an event for triggering an LTM measurement report (e.g. over MAC CE and / or UCI) is configured. The first criterion referred to herein can correspond to an event for triggering an LTM measurement report. An event, for example, can be defined as a measurement quantity (e.g. LI RSRP) of a (e.g. SSB and / or CSLRS) beam of a (e.g. LTM) candidate cell becoming an offset better than the same measurement quantity (e.g. LI RSRP) of a serving cell (e.g. SSB of the PCell associated to an activated and / or indicated TCI state). Actual SSBs of the LTM candidate cell(s) to be measured can be configured in the measurement configuration (and / or resource set or resource configuration) associated to that LTM reporting configuration. It could also be said that the event definition is like one or more conditions to be evaluated. As per Rel-18 LTM, the different types of measurement reports in LTM can include periodic reporting, semi-persistent reporting, and aperiodic reporting. However, Rel-19 also introduces event-triggered report type in LTM which can be transmitted upon the fulfilment of the associated event condition(s).

[0112] An LI event type in LTM is a class of events, e.g. LTM2, LTM3, LTM4, LTM5. An LI event or event instance is an instance of an event type, e.g. an LTM3 event configured with certain parameters like offset, threshold, time-to-trigger (TTT) etc., and associated with an LTM resource configuration. An LI event identifier can uniquely identify an event instance and can be understood by both the UE and the serving gNB. The condition(s) defined in the LTM events can also be referred to as triggering condition(s), event condition(s), LTM event condition(s), event trigger condition(s) or simply trigger condition(s) in the text.

[0113] A measurement quantity can refer to one or more of:Ll-RSRP from SS-RSRP or CSLRSRP,LI- signal -to-interference and noise ratio (SINR) from SS-SINR or CSLSINR, and LI- reference signal received quality (RSRQ) from SS-RSRQ or CSLRSRQ.

[0114] Measurement quantity value can refer to a value which the UE reports for the measurement quantity of an SSB or a CSLRS resource. In Rel-18 LTM LI -reporting, the measurement quantity is primarily the SS-RSRP for the LTM measurement resource with the highest measurement and differential SS-RSRP value(s) with respect to the highest SS-RSRP measurement. A triggering measurement quantity value for an event can be a measurement quantity value that meets the conditions for the event throughout a TTT duration and can hence trigger the UE to send the measurement report.

[0115] The report referred to herein can be an LTM report. An LTM report can be referred to as a lower layer report, lower layer measurement report, lower layer reporting, LI -report, LI -measurement report, LI event triggered measurement report, LI -reporting, and / or LTM measurement report. An event-triggered LTM report can be referred to herein as an event-triggered LI -report, event-triggered LI -measurement report, event-triggered lower layer measurement report, event-triggered lower layer reporting, event-triggered LI -reporting, Ll-measurement report, LI event triggered measurement report, LTM measurement report, and / or LTM event triggered measurement report.

[0116] Herein, the term “cell” can be used to identify a location (and / or coverage area) in which the wireless device can be located. However, the term “cell” can also be exchanged without any loss of meaning with the terms “radio resources”, “beams”, “TCI state”, or “tracking reference signal (TRS)”. As such, the disclosure is not limited to scenarios involving cells. It will be understood that the technique described herein can be applied to scenarios when a wireless device (e.g. UE) uses a set of source radio resources and needs to switch to a target set of radio resources. In such a case, a radio resource can also identify a set of configurations, field, parameters, ASN.l structures, and / or IES. Herein, terms such as non-fulfilling beams and non-fulfilling reference signals are mentioned. Non-fulfilling reference signals may be SSB-RS / CSLRS which do not fulfil the condition(s) defined for a given LTM event. The network node referred to herein may be a source cell, a serving cell, a source gNB-DU, and / or a S-DU. The network node referred to herein may be referred to as a first network node.

[0117] A “triggered cell”, as referred to herein, can be understood to be a triggered LTM candidate cell, which is an LTM candidate cell for which a beam, or Reference Signal (e.g. CSLRS, SSB) or Synchronization Signal (e.g., SSB) transmitted in a beam, fulfills a triggering condition for transmitting a measurement report (e.g. the report referred to herein). A triggeredLTM candidate cell may be configured as part of an LTM resource configuration, as defined herein.

[0118] Herein, a “triggered beam” can refer to a beam of a triggered LTM candidate cell. For example, a triggered beam may be a beam, a Reference Signal (e.g. CSLRS, SSB) and / or a Synchronization Signal (e.g. SSB) transmitted in a beam, which fulfills a triggering condition for transmitting an LTM measurement report. A triggered beam may be configured as part of an LTM resource configuration and / or associated to an LTM candidate cell.

[0119] Herein, a “non-triggered cell” can refer to a non-triggered LTM candidate cell. A non-triggered cell can be a cell for which any beam, or Reference Signal (e.g. CSLRS, SSB) or Synchronization Signal (e.g. SSB) transmitted in a beam, does not fulfill the triggering condition the UE is configured with, for transmitting an LTM measurement report. A nontriggered LTM candidate cell may be configured as part of an LTM resource configuration.

[0120] Herein, a “non-triggered beam” may refer to a beam, or Reference Signal (e.g., CSLRS, SSB) or Synchronization Signal (e.g., SSB) transmitted in a beam, which does not fulfill a triggering condition for transmitting an LTM measurement report. A non-triggered beam may have been configured as part of an LTM resource configuration and / or associated to an LTM candidate cell. For a given LTM measurement report, triggered to be transmitted according to a specific triggering condition configured in a specific reporting configuration, a non-triggered beam can be a beam which does not fulfill that condition.

[0121] Herein, the terms “LTM”, “LTM candidate cell”, “LTM event”, “LTM measurement configuration (e.g. LTM CSLSSB Resource Set)”, and “LTM reporting configuration” are mentioned. It will be understood that all the methods described herein can be equally applied to a case in which LTM is “conditional”. In such a case, a difference between an LTM candidate cell and a conditional LTM (CLTM) candidate cell is that, when the LTM candidate cell configuration includes execution conditions, the UE can trigger an LTM cell switch procedure when such conditions are fulfilled. Therefore, the methods described herein can be applied also to “CLTM”, “CLTM candidate cell”, “CLTM event”, “CLTM resource configuration”, and / or “CLTM reporting configuration”.

[0122] Herein, the term “truncated report” and “segmented report” are mentioned. The truncated report may be a truncated MAC CE report according to some examples, and / or the segmented report may be a segmented MAC CE report according to some examples. Both truncated and segmented terminologies can be used to identify the case in which the wireless device has a list of signal measurements (e.g. LTM candidate cell beam(s) measurements or reference signal(s) measurements) to be transmitted, but such measurements do not fit in asingle measurement report (e.g. because the available UL grant is too small). In this case, the UE may decide to divide the overall number of (e.g. the LTM candidate cell beam(s) / reference signal(s)) measurements into multiple reports which can be referred to as truncated reports and / or segmented reports. This terminology can be used to identify one of multiple (e.g. MAC CE) reports sent by the wireless device referred to herein.

[0123] Figure 5 shows an example of a communication system 500 in accordance with some embodiments.

[0124] In the example, the communication system 500 includes a telecommunications network 502 that includes an access network 504, such as a radio access network (RAN), and a core network 506, which includes one or more core network nodes 508. The access network 504 includes one or more access network nodes or base stations of various types, access network nodes 510A and 510B are depicted (which may be collectively referred to as network nodes 510), or any other similar 3rdGeneration Partnership Project (3GPP) access nodes or non-3GPP access points (APs). Some embodiments of the access network 504 may include more than one access network technology. The network nodes 510 of access network 504 facilitate direct or indirect connection of wireless devices, also referred to as user equipments (UEs), such as by connecting UEs 512A, 512B, 512C, and 512D (one or more of which may be generally referred to as UEs 512) to the core network 506 over one or more wireless connections.

[0125] Moreover, a network node is not necessarily limited to an implementation in which a radio portion and a baseband portion are supplied and integrated by a single vendor. Thus, it will be understood that network nodes include disaggregated implementations or portions thereof. For example, in some embodiments, the telecommunications network 502 includes one or more Open-RAN (ORAN) network nodes. An ORAN network node is a network node in the telecommunications network 502 that supports an ORAN specification (e.g., a specification published by the O-RAN Alliance, or any similar organization) and may operate alone or together with other network nodes to implement one or more functionalities of any network node in the telecommunications network 502, including one or more access network nodes 510 and / or core network nodes 508.

[0126] Examples of an ORAN network node include an open radio unit (O-RU), an open distributed unit (O-DU), an open central unit (O-CU), including an O-CU control plane (O-CU-CP) or an O-CU user plane (O-CU-UP), a RAN intelligent controller (near-real time or non-real time) hosting software or software plug-ins, such as a near-real time control application (e.g., xApp) or a non-real time control application (e.g., rApp), or any combinationthereof (the adjective “open” designating support of an ORAN specification). An ORAN network node may support a specification by, for example, supporting an interface defined by the ORAN specification, such as an Al, Fl, Wl, El, E2, X2, Xn interface, an open fronthaul user plane interface, or an open fronthaul management plane interface. Moreover, an ORAN network node may be a logical node in a physical node. Furthermore, an ORAN network node may be implemented in a virtualization environment (described further below) in which one or more network functions are virtualized. For example, the virtualization environment may include an O-Cloud computing platform orchestrated by a Service Management and Orchestration Framework via an 0-2 interface defined by the 0-RAN Alliance or comparable technologies.

[0127] The network nodes 510 facilitate direct or indirect connection of one or more UEs 512 to the core network 506 over one or more wireless connections. Example wireless communications over a wireless connection include transmitting and / or receiving wireless signals using electromagnetic waves, radio waves, infrared waves, and / or other types of signals suitable for conveying information without the use of wires, cables, or other material conductors. Moreover, in different embodiments, the communication system 500 may include any number of wired or wireless networks, network nodes, UEs, and / or any other components or systems that may facilitate or participate in the communication of data and / or signals whether via wired or wireless connections. The communication system 500 may include and / or interface with any type of communication, telecommunication, data, cellular, radio network, and / or other similar type of system.

[0128] The UEs 512 may be any of a wide variety of communication devices, including wireless devices arranged, configured, and / or operable to communicate wirelessly with the network nodes 510 and other communication devices. Similarly, the network nodes 508, 510 are arranged, capable, configured, and / or operable to communicate directly or indirectly (e.g., via other devices of telecommunications network 502) with the UEs 512 and / or with other network nodes or equipment in the telecommunications network 502 to enable and / or provide network access, such as wireless network access, and / or to perform other functions, such as administration in the telecommunications network 502. More specifically, UEs 512 may send messages, data, and / or other signals to network nodes 508, 510 or other elements of the telecommunications network 502 by transmitting such signals to the relevant device directly without the signals passing through any intervening devices or by transmitting such signals to the relevant device indirectly through an intervening device (or multiple intervening devices) that then transmit the signal to the relevant device. Similarly, network nodes 508, 510 may sendmessages, data, and other signals to UEs 5122, other network nodes 508, 510, and other devices in telecommunications network 502 directly or indirectly. As one specific example, a core network node 108 may transmit a particular message to a UE 512 by transmitting the message to an access network node 510 that will then transmit the message to the intended UE 512. Similarly, a core network node 108 may receive a particular message from a UE 512 by receiving the message from an access network node 510 that itself received the message from the UE 512.

[0129] In the depicted example, the core network 506 connects elements of the access network 504 (e.g., one or more of the network nodes 510) to one or more host computing systems, such as host 516. These connections may be direct or indirect via one or more intermediary networks or devices. In other examples, network nodes may be directly coupled to hosts. The core network 506 includes one or more core network nodes (e.g., core network node 508) of various types, one or more of which may be generally referred to as network nodes 508. Network nodes 508 are structured with hardware and software components. Features of these components may be substantially similar to those described with respect to the UEs, access network nodes, and / or hosts, such that the descriptions thereof are generally applicable to the corresponding components of the core network node 508. Example core network nodes provide functions of one or more of a Mobile Switching Center (MSC), Mobility Management Entity (MME), Home Subscriber Server (HSS), Access and Mobility Management Function (AMF), Session Management Function (SMF), Authentication Server Function (AUSF), Subscription Identifier De-concealing function (SIDF), Unified Data Management (UDM), Security Edge Protection Proxy (SEPP), Network Exposure Function (NEF), and / or a User Plane Function (UPF).

[0130] The host 516 may be under the ownership or control of a service provider other than an operator or provider of the access network 504 and / or the telecommunications network 502. The host 516 may be operated by the service provider or on behalf of the service provider. The host 516 may host a variety of applications to provide one or more service. Examples of such applications include live and pre-recorded audio / video content, data collection services such as retrieving and compiling data on various ambient conditions detected by a plurality of UEs, analytics functionality, social media, functions for controlling or otherwise interacting with remote devices, functions for an alarm and surveillance center, or any other such function performed by a server.

[0131] As a whole, the communication system 500 of Figure 5 enables connectivity between the UEs, network nodes, and hosts. In that sense, the communication system 500 maybe configured to operate according to predefined rules or procedures, such as specific standards that include, but are not limited to: Global System for Mobile Communications (GSM); Universal Mobile Telecommunications System (UMTS); Long Term Evolution (LTE), and / or other suitable 2G, 3G, 4G, 5G standards, or any applicable future generation standard (e.g., 6G); wireless local area network (WLAN) standards, such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards (Wi-Fi); and / or any other appropriate wireless communication standard, such as the Worldwide Interoperability for Microwave Access (Wi-Max), Bluetooth, Z-Wave, Near Field Communication (NFC) ZigBee, Li-Fi, and / or any low-power wide-area network (LPWAN) standards such as LoRa and Sigfox. Moreover, the communication system 500 may be configured to support multiple different standards, protocols, or other rule sets, with individual components supporting all of the relevant rule sets or with different components or sub-systems within the communication system 500 supporting different standards, protocols, or rule sets.

[0132] As one example, in certain embodiments, access network 504 may contain some access network nodes 510 that support 3GPP radio access technologies (RAT), such as LTE or NR, while other access network nodes 510 support (or the same access network nodes 510 additionally support) non-3GPP RATs, such as Wi-Fi or a proprietary RAT. As another example, telecommunications network 502 may support multiple generations of related communication standards (e.g., 4G and 5G 3GPP communication standards) and, as a result, may include an access network 104 and / or a core network 106 that supports multiple different standard generations or may include multiple access networks 104 and / or multiple core networks 106 with individual networks 104, 106 supporting different standard generations.

[0133] Telecommunications network 502 may support network slicing to provide different logical networks to different devices that are connected to the telecommunications network 502. For example, the telecommunications network 502 may provide Ultra Reliable Low Latency Communication (URLLC) services to some UEs, while providing Enhanced Mobile Broadband (eMBB) services to other UEs, and / or Massive Machine Type Communication (mMTC) / Massive loT services to yet further UEs.

[0134] In some examples, one or more of the UEs 512 are configured to transmit and / or receive information without direct human interaction. For instance, a UE may be designed to transmit information to the access network 504 on a predetermined schedule, when triggered by an internal or external event, or in response to requests from the access network 504. Additionally, a UE may be configured for operating in single- or multi-RAT or multi-standard mode. For example, a UE may operate with any one or combination of Wi-Fi, NR (New Radio)and LTE, i.e. being configured for multi-radio dual connectivity (MR-DC), such as E-UTRAN (Evolved-UMTS Terrestrial Radio Access Network) New Radio - Dual Connectivity (EN-DC).

[0135] In the example, the hub 514 communicates with the access network 504 to facilitate indirect communication between one or more UEs (e.g., UE 512C and / or 512D) and network nodes (e.g., network node 510B). In some examples, the hub 514 may be a controller, router, content source and analytics, or any of the other communication devices described herein regarding UEs. For example, the hub 514 may be a broadband router enabling access to the core network 506 for the UEs. As another example, the hub 514 may be a controller that sends commands or instructions to one or more actuators in the UEs. Commands or instructions may be received from the UEs, network nodes 510, or by executable code, script, process, or other instructions in the hub 514.

[0136] As another example, the hub 514 may be a data collector that acts as temporary storage for UE data and, in some embodiments, may perform analysis or other processing of the data. As another example, the hub 514 may be a content source. For example, for a UE that is a VR headset, display, loudspeaker or other media delivery device, the hub 514 may retrieve VR assets, video, audio, or other media or data related to sensory information via a network node, which the hub 514 then provides to the UE either directly, after performing local processing, and / or after adding additional local content. In still another example, the hub 514 acts as a proxy server or orchestrator for the UEs, in particular if one or more of the UEs are low energy loT devices.

[0137] The hub 514 may have a constant / persistent or intermittent connection to the network node 510B. The hub 514 may also allow for a different communication scheme and / or schedule between the hub 514 and UEs (e.g., UE 512C and / or 512D), and between the hub 514 and the core network 506. In other examples, the hub 514 is connected to the core network 506 and / or one or more UEs via a wired connection. Moreover, the hub 514 may be configured to connect to an M2M service provider over the access network 504 and / or to another UE over a direct connection. In some scenarios, UEs may establish a wireless connection with the network nodes 510 while still connected via the hub 514 via a wired or wireless connection. In some embodiments, the hub 514 may be a dedicated hub - that is, a hub whose primary function is to route communications to / from the UEs from / to the network node 510B. In other embodiments, the hub 514 may be a non-dedicated hub - that is, a device which is capable of operating to route communications between the UEs and network node 510B, but which isadditionally capable of operating as a communication start and / or end point for certain data channels.

[0138] Figure 6 is another example of a communication system 600 according to some embodiments. As used herein, the communication system 600 includes multiple access points (APs) 610 (with four exemplary APs 610A, 610B, 610C, and 610D being depicted) and multiple wireless devices, referred to in the context of communication system 600 as stations (STAs) 612 (referred to individually as ST A 612A, ST A 612B, ST A 612C, ST A 612D, and STA 612E). STA 612A is served by AP 610A in a first basic service set (BSS) 620A. STA 610B and STA 610C are served by AP 610B in a second BSS, BSS 620B. STA 612D is served by AP 610C in a third BSS, BSS 620C. STA 612E is served by AP 610D in a fourth BSS, BSS 620D. Stations 612 may be non-AP STAs and correspond to various kinds of wireless devices, for example, user terminals, such as mobile or stationary computing devices like smartphones, laptop computers, desktop computers, tablet computers, gaming devices, head-mounted displays (HMDs) for Augmented Reality (AR) or Virtual Reality (VR), or the like. Further, stations 612 could, for example, correspond to other kinds of equipment like smart home devices, printers, multimedia devices, data storage devices, or the like.

[0139] Each of STAs 612 may connect through a radio link to one of APs 610. For example, depending on location or channel conditions experienced by a given STA 612, the STA may select an appropriate AP and BSS for establishing the radio link. The radio link may be based on one or more orthogonal frequency-division multiplexing (OFDM) carriers from a frequency spectrum that is shared on the basis of a contention-based mechanism, e.g., an unlicensed or license exempt band like 2.4 GHz Industrial, Scientific, and Medical (ISM) band, the 5 GHz band, the 6 GHz band, or the 60 GHz band.

[0140] Each AP 610 may provide data connectivity to STAs 612 connected to a particular AP 610. As illustrated, APs 610 may be connected to a data network 630. In this way, APs 610 may also provide data connectivity between STAs 612 and other entities, e.g., to one or more servers, service providers, data sources, data sinks, user terminals, or the like. Accordingly, the radio link established between a given STA 612 and its serving AP 610 may be used for providing various kinds of services to STA 612, e.g., a voice service, a multimedia service, or other data service. Such services may be based on applications that are executed on STA 612 and / or on a device linked to STA 612. By way of example, Figure 6 illustrates an application service platform 632 provided in data network 630. The application(s) executed on STA 612 and / or on one or more other devices linked to STA 612 may use the radio link for datacommunication with one or more other STA 612 and / or the application service platform 632, thereby enabling utilization of the corresponding service(s) at STA 612.

[0141] Figure 7 shows a wireless device 700, which may be configured to operate in communication system 500 of Figure 5 or in communication system 600 of Figure 6. The wireless device 700 may be alternatively referred to as a UE 700, like a UE 512 within the context of communication system 500, or as a station (STA) 700 or as a non-access-point station (non-AP STA) 700, like a STA 612 within the context of the communication system 600, in accordance with respective embodiments. As used herein, a wireless device refers to a device capable, configured, arranged and / or operable to communicate wirelessly with network nodes and / or other wireless devices. Examples of a wireless device include, but are not limited to, a smart phone, mobile phone, cell phone, voice over IP (VoIP) phone, wireless local loop phone, desktop computer, personal digital assistant (PDA), wireless cameras, gaming console or device, music storage device, playback appliance, wearable terminal device, wireless endpoint, mobile station, tablet, laptop, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), smart device, wireless customer-premise equipment (CPE), vehicle, vehicle-mounted or vehicle embedded / integrated wireless device, and wireless terminal. Other examples include any type of UE identified by the 3rd Generation Partnership Project (3GPP), including a narrow band internet of things (NB-IoT) UE, a machine type communication (MTC) UE, and / or an enhanced MTC (eMTC) UE.

[0142] A wireless device 700 may support device-to-device (D2D) communication, for example by implementing a 3 GPP standard for sidelink communication, Dedicated Short-Range Communication (DSRC), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), or vehicle-to-everything (V2X). In other examples, wireless device 700 may not necessarily have a user in the sense of a human user who owns and / or operates the relevant device. Instead, wireless device 700 may represent a device that is intended for sale to, or operation by, a human user but which may not, or which may not initially, be associated with a specific human user (e.g., a smart sprinkler controller). Alternatively, wireless device 700 may represent a device that is not intended for sale to, or operation by, an end user but which may be associated with or operated for the benefit of a user (e.g., a smart power meter).

[0143] In particular embodiments, wireless device 700 includes processing circuitry 702 that is operatively coupled via a bus 704 to an input / output interface 706, a power source 708, a memory 710, a communication interface 712, and / or any other component, or any combination thereof. Certain embodiments of wireless device 700 may include all or a subset of the components shown in Figure 7. The level of integration between the components mayvary from one embodiment of wireless device 700 to another. In general, in a particular embodiment of wireless device 700, processing circuitry 702, input / output interface 706, power source 708, memory 710, and communication interface 712 may, in whole or in part, represent or include physical components common to or shared by one or more of the other elements of wireless device 700. Further, certain embodiments of wireless devices 700 may contain multiple instances of a component, such as multiple processors, memories, transceivers, transmitters, receivers, etc.

[0144] The processing circuitry 702 is configured to process instructions and data and may be configured to implement any sequential state machine operative to execute instructions stored as machine-readable computer programs in the memory 710. The processing circuitry 702 may be implemented as one or more hardware-implemented state machines (e.g., in discrete logic, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), etc.); programmable logic together with appropriate firmware; one or more stored computer programs, general-purpose processors, such as a microprocessor or digital signal processor (DSP), together with appropriate software; or any combination of the above. For example, the processing circuitry 702 may include multiple central processing units (CPUs). The processing circuitry 702 may be configured to cause the wireless device 700 to perform the methods as described with reference to Figure 3.

[0145] In the example, the input / output interface 706 may be configured to provide an interface or interfaces to an input device, output device, or one or more input and / or output devices. Examples of an output device include a speaker, a sound card, a video card, a display, a monitor, a printer, an actuator, an emitter, a smartcard, another output device, or any combination thereof. An input device may allow a user to capture information into wireless device 700. Examples of an input device include a touch-sensitive or presence-sensitive display, a camera (e.g., a digital camera, a digital video camera, a web camera, etc.), a microphone, a sensor, a mouse, a trackball, a directional pad, a trackpad, a scroll wheel, a smartcard, and the like. The presence-sensitive display may include a capacitive or resistive touch sensor to sense input from a user. A sensor may be, for instance, an accelerometer, a gyroscope, a tilt sensor, a force sensor, a magnetometer, an optical sensor, a proximity sensor, a biometric sensor, etc., or any combination thereof. An output device may use the same type of interface port as an input device. For example, a Universal Serial Bus (USB) port may be used to provide an input device and an output device.

[0146] In some embodiments, the power source 708 is structured as a battery or battery pack. Other types of power sources, such as an external power source (e.g., an electricityoutlet), photovoltaic device, or power cell, may be used to supply power to circuitry or to charge an associated battery. The power source 708 may further include power circuitry for delivering power from the power source 708 itself, and / or an external power source, to the various parts of wireless device 700 via input circuitry or an interface such as an electrical power cable. Power source 708 may perform any formatting, converting, or other modification to make accessible power suitable for the respective components of the wireless device 700 to which power is supplied.

[0147] The memory 710 may be or be configured to include memory such as random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic disks, optical disks, hard disks, removable cartridges, flash drives, and so forth. In one example, the memory 710 includes one or more programs 714, such as an operating system, web browser application, a widget, gadget engine, or other application, and corresponding data 716. The memory 710 may store, for use by wireless device 700, any of a variety of various operating systems or combinations of operating systems.

[0148] The memory 710 may be configured to include a number of physical drive units, such as redundant array of independent disks (RAID), flash memory, USB flash drive, external hard disk drive, thumb drive, pen drive, key drive, high-density digital versatile disc (HD-DVD) optical disc drive, internal hard disk drive, Blu-Ray optical disc drive, holographic digital data storage (HDDS) optical disc drive, external mini-dual in-line memory module (DIMM), synchronous dynamic random access memory (SDRAM), external micro-DIMM SDRAM, smartcard memory such as tamper resistant module in the form of a universal integrated circuit card (UICC) including one or more subscriber identity modules (SIMs), such as a USIM and / or ISIM, other memory, or any combination thereof. The UICC may for example be an embedded UICC (eUICC), integrated UICC (iUICC) or a removable UICC commonly known as ‘SIM card.’ The memory 710 may allow wireless device 700 to access instructions, programs and the like, stored on transitory or non-transitory memory media, to off-load data, or to upload data. An article of manufacture, such as one utilizing a communication system may be tangibly embodied as or in the memory 710, which may be or comprise a device-readable storage medium.

[0149] The processing circuitry 702 may be configured to communicate with an access network or other network via or using the communication interface 712. The communication interface 712 may comprise one or more communication subsystems and may include or becommunicatively coupled to an antenna 722. The communication interface 712 may include one or more transceivers used to communicate, such as by communicating with one or more remote transceivers of another device capable of wireless communication (e.g., another wireless device or a network node in an access network). Each transceiver may include a transmitter 718 and / or a receiver 720 appropriate to provide network communications (e.g., optical, electrical, frequency allocations, and so forth). Moreover, the transmitter 718 and receiver 720 may be coupled to one or more antennas (e.g., antenna 722) and may share circuit components, software or firmware, or alternatively be implemented separately.

[0150] In the illustrated embodiment, communication functions of the communication interface 712 may include cellular communication, Wi-Fi communication (e.g., according to an IEEE 802.11 family standard), LPWAN communication, data communication, voice communication, multimedia communication, short-range communications such as Bluetooth, near-field communication, location-based communication such as the use of the global positioning system (GPS) to determine a location, another like communication function, or any combination thereof. Communications may be implemented according to one or more communication protocols and / or standards, such as IEEE 802.11, Code Division Multiplexing Access (CDMA), Wideband Code Division Multiple Access (WCDMA), GSM, LTE, New Radio (NR), UMTS, WiMax, Ethernet, transmission control protocol / internet protocol (TCP / IP), synchronous optical networking (SONET), Asynchronous Transfer Mode (ATM), QUIC, Hypertext Transfer Protocol (HTTP), and so forth.

[0151] In particular embodiments, wireless device 700 may provide an output of data captured via a sensor, through its communication interface 712, via a wireless connection to a network node, and / or in any appropriate manner. Data captured by sensors of a wireless device 700 can be communicated through a wireless connection to a network node via another wireless device 700. In particular embodiments, such output may be periodic (e.g., once every 15 minutes if it reports the sensed temperature), random (e.g., to even out the load from reporting from several sensors), in response to a triggering event (e.g., when moisture is detected an alert is sent), in response to a request (e.g., a user initiated request), or a continuous stream (e.g., a live video feed of a patient).

[0152] As another example, wireless device 700 comprises an actuator, a motor, or a switch, related to a communication interface configured to receive wireless input from a network node via a wireless connection. In response to the received wireless input the states of the actuator, the motor, or the switch may change. For example, wireless device 700 may comprise a motor that adjusts the control surfaces or rotors of a drone in flight according to thereceived input or to a robotic arm performing a medical procedure according to the received input.

[0153] Wireless device 700, when in the form of an Internet of Things (loT) device, may be a device for use in one or more application domains, these domains comprising, but not limited to, wearable technology, extended industrial application and healthcare. Non-limiting examples of such an loT device are a device which is or which is embedded in: a connected refrigerator or freezer, a TV, a connected lighting device, an electricity meter, a robot vacuum cleaner, a voice controlled smart speaker, a home security camera, a motion detector, a thermostat, a smoke detector, a door / window sensor, a flood / moisture sensor, an electrical door lock, a connected doorbell, an air conditioning system like a heat pump, an autonomous vehicle, a surveillance system, a weather monitoring device, a vehicle parking monitoring device, an electric vehicle charging station, a smart watch, a fitness tracker, a wearable for tactile augmentation or sensory enhancement, a water sprinkler, an animal- or item-tracking device, a sensor for monitoring a plant or animal, an industrial robot, an Unmanned Aerial Vehicle (UAV), and any kind of medical device, like a heart rate monitor or a remote controlled surgical robot. In particular embodiments, wireless device 700 represents an loT device that comprises circuitry and / or software in dependence of the intended application of the loT device in addition to other components as described in relation to the example embodiment of wireless device 700 shown in Figure 7.

[0154] As yet another specific example, in an loT scenario, wireless device 700 may represent a machine or other device that performs monitoring and / or measurements, and transmits the results of such monitoring and / or measurements to another wireless device and / or a network node. Wireless device 700 may in this case be an M2M device, which may in a 3GPP context be referred to as an MTC device. As one particular example, wireless device 700 may implement the 3GPP NB-IoT standard. In other scenarios, wireless device 700 may represent a vehicle, such as a car, a bus, a truck, a ship and an airplane, or other equipment that is capable of monitoring and / or reporting on its operational status or other functions associated with its operation.

[0155] In practice, any number of wireless devices 700 may be used together with respect to a single use case. For example, a first wireless device 700 might be or be integrated in a drone and provide the drone’s speed information (obtained through a speed sensor) to a second wireless device 700 that is a remote controller operating the drone. When a user makes changes from the remote controller, the first wireless device 700 may adjust the throttle on the drone (e.g. by controlling an actuator) to increase or decrease the drone’s speed. The first and / or thesecond wireless device 700 can also include more than one of the functionalities described above. For example, wireless device 700 might comprise the sensor and the actuator, and handle communication of data for both the speed sensor and the actuators.

[0156] Figure 8 shows a network node 800 in accordance with some embodiments. As used herein, network node refers to equipment capable, configured, arranged and / or operable to communicate directly or indirectly with a UE and / or with other network nodes or equipment, in a telecommunications network. In accordance with respective embodiments, network node 800 may be configured to operate in communication system 500 of Figure 5, like network nodes 508 or 510, or in communication system 600 of Figure 6, like an AP 610 or a station 612. Examples of network nodes include, but are not limited to, access points (APs) (e.g., radio access points), base stations (BSs) (e.g., radio base stations, Node Bs, evolved Node Bs (eNBs) and NR NodeBs (gNBs)), O-RAN nodes or components of an O-RAN node (e.g., O-RU, O-DU, O-CU).

[0157] Network nodes 800 may be categorized based on the amount of coverage they provide (or, stated differently, their transmit power level) and so, depending on the provided amount of coverage, may be referred to as femto base stations, pico base stations, micro base stations, or macro base stations. Network node 800 may be a relay node or a relay donor node controlling a relay. Network nodes 800 may also include one or more (or all) parts of a distributed radio base station such as centralized digital units, distributed units (e.g., in an O-RAN access node) and / or remote radio units (RRUs), sometimes referred to as Remote Radio Heads (RRHs). Such remote radio units may or may not be integrated with an antenna as an antenna integrated radio. Parts of a distributed radio base station may also be referred to as nodes in a distributed antenna system (DAS).

[0158] Other examples of network nodes 800 include multiple transmission point (multi-TRP) 5G access nodes, multi-standard radio (MSR) equipment such as MSR BSs, network controllers such as radio network controllers (RNCs) or base station controllers (BSCs), base transceiver stations (BTSs), transmission points, transmission nodes, multi-cell / multicast coordination entities (MCEs), Operation and Maintenance (O&M) nodes, Operations Support System (OSS) nodes, Self-Organizing Network (SON) nodes, positioning nodes (e.g., Evolved Serving Mobile Location Centers (E-SMLCs)), and / or Minimization of Drive Tests (MDTs).

[0159] In particular embodiments, network node 800 includes a processing circuitry 802, a memory 804, a communication interface 806, and a power source 808. In general, in a particular embodiment of network node 800, processing circuitry 802, memory 804, communication interface 806, and power source 808 may, in whole or in part, represent orinclude physical components common to or shared by one or more of the other elements of network node 800.

[0160] The network node 800 may be composed of multiple distinct network entities (e.g., a NodeB entity and a RNC entity, or a BTS entity and a BSC entity, etc.), which may each have or utilize their own respective physical components. In certain scenarios in which the network node 800 comprises multiple such entities (e.g., BTS and BSC), one or more of the separate entities may be shared among several network nodes. For example, a single RNC may control multiple NodeBs. In such a scenario, each unique NodeB and RNC pair, may in some instances be considered a single separate network node. In some embodiments, the network node 800 may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may be duplicated (e.g., separate memories 804 or portions of memory 804 for different RATs) and some components may be reused (e.g., a same antenna 810 may be shared by different RATs). The network node 800 may also include multiple sets of the various illustrated components for different wireless technologies integrated into network node 800, for example GSM, WCDMA, LTE, NR, Wi-Fi (e.g., according to an IEEE 802.11 family standard), Zigbee, Z-wave, LoRaWAN, Radio Frequency Identification (RFID) or Bluetooth wireless technologies. These wireless technologies may be integrated into the same or different chip or set of chips and other components within network node 800.

[0161] The processing circuitry 802 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software and / or encoded logic operable to provide, either alone or in conjunction with other components, such as the memory 804, to provide network node 800 functionality. For example, the processing circuitry 802 may be configured to cause the network node 800 to perform the methods as described with reference to Figure 4.

[0162] In some embodiments, the processing circuitry 802 includes a system on a chip (SOC). In some embodiments, the processing circuitry 802 includes one or more of radio frequency (RF) transceiver circuitry 812 and baseband processing circuitry 814. In some embodiments, the RF transceiver circuitry 812 and the baseband processing circuitry 814 may be on separate chips (or sets of chips), boards, or units, such as radio units and digital units. In alternative embodiments, part or all of RF transceiver circuitry 812 and baseband processing circuitry 814 may be on the same chip or set of chips, boards, or units.

[0163] The memory 804 may comprise any form of volatile or non-volatile computer-readable memory including, without limitation, persistent storage, solid-state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), mass storage media (for example, a hard disk), removable storage media (for example, a flash drive, a Compact Disk (CD) or a Digital Video Disk (DVD)), and / or any other volatile or non-volatile, non-transitory device-readable and / or computerexecutable memory devices that store information, data, and / or instructions that may be used by the processing circuitry 802. The memory 804 may store any suitable instructions, data, or information, including a computer program, software, an application including one or more of logic, rules, code, tables, and / or other instructions capable of being executed by the processing circuitry 802 and utilized by the network node 800. The memory 804 may be used to store any calculations made by the processing circuitry 802 and / or any data received via the communication interface 806. In some embodiments, the processing circuitry 802 and memory 804 is integrated.

[0164] The communication interface 806 is used in wired or wireless communication of signaling and / or data with UEs, other network nodes, and / or any other network equipment. In the illustrated embodiment, communication interface 806 comprises port(s) / terminal(s) 816 to send and receive data, for example to and from a network over a wired connection. In particular embodiments, network node 700 may be capable of wireless communication and communication interface 806 may also include radio front-end circuitry 818 that may be coupled to, or in certain embodiments a part of, an antenna 810. Particular embodiments of radio front-end circuitry 818 include filter(s) 820 and amplifier(s) 822. The radio front-end circuitry 818 may be connected to an antenna 810 and processing circuitry 802. The radio frontend circuitry may be configured to condition signals communicated between antenna 810 and processing circuitry 802. The radio front-end circuitry 818 may receive digital data that is to be sent out to other network nodes or UEs via a wireless connection. The radio front-end circuitry 818 may convert the digital data into a radio signal(s) having the appropriate channel and bandwidth parameters using a combination of filters 820 and / or amplifiers 822. The radio signal(s) may then be transmitted via the antenna 810. Similarly, when receiving data, the antenna 810 may collect radio signals which are then converted into digital data by the radio front-end circuitry 818. The digital data may be passed to the processing circuitry 802. In other embodiments, the communication interface may comprise different components and / or different combinations of components.

[0165] In certain alternative embodiments, network node 800 may be capable of wireless communication but does not include separate radio front-end circuitry 818, instead, the processing circuitry 802 includes radio front-end circuitry and is connected to the antenna 810. Similarly, in some embodiments, all or some of the RF transceiver circuitry 812 is part of the communication interface 806. In still other embodiments, the communication interface 806 includes one or more ports or terminals 816, the radio front-end circuitry 818, and the RF transceiver circuitry 812, as part of a radio unit (not shown), and the communication interface 806 communicates with the baseband processing circuitry 814, which is part of a digital unit (not shown).

[0166] The antenna 810 may include one or more antennas, or antenna arrays, configured to send and / or receive wireless signals. The antenna 810 may be coupled to the radio front-end circuitry 818 and may be any type of antenna capable of transmitting and receiving data and / or signals wirelessly. In certain embodiments, the antenna 810 is separate from the network node 800 and connectable to the network node 800 through one or more interfaces or ports.

[0167] The antenna 810, communication interface 806, and / or the processing circuitry 802 may be configured to perform some or all of the receiving operations and / or obtaining operations described herein as being performed by the network node 800. Any information, data and / or signals may be received from a UE, another network node and / or any other network equipment. Similarly, the antenna 810, the communication interface 806, and / or the processing circuitry 802 may be configured to perform some or all of the transmitting or sending operations described herein as being performed by the network node 800. Any information, data and / or signals may be transmitted to a UE, another network node and / or any other network equipment.

[0168] The power source 808 provides power to the various components of network node 800 in a form suitable for the respective components (e.g., at a voltage and current level needed for each respective component). The power source 808 may further comprise, or be coupled to, power management circuitry to supply the components of the network node 800 with power for performing the functionality described herein. For example, the network node 800 may be connectable to an external power source (e.g., the power grid, an electricity outlet) via an input circuitry or interface such as an electrical cable, whereby the external power source supplies power to power circuitry of the power source 808. As a further example, the power source 808 may comprise a source of power in the form of a battery or battery pack which is connected to, or integrated in, power circuitry. The battery may provide backup power should the external power source fail.

[0169] Embodiments of the network node 800 may include additional components beyond those shown in Figure 8 for providing certain aspects of the network node’s functionality, including any of the functionality described herein and / or any functionality necessary to support the subject matter described herein. For example, the network node 800 may include user interface equipment to allow input of information into the network node 800 and to allow output of information from the network node 800. This may allow a user to perform diagnostic, maintenance, repair, and other administrative functions for the network node 800.

[0170] Figure 9 is a block diagram illustrating a virtualization environment 900 in which functions implemented by some embodiments may be virtualized. In the present context, virtualizing means creating virtual versions of apparatuses or devices which may include virtualizing hardware platforms, storage devices and networking resources. As used herein, virtualization can be applied to any device described herein, or components thereof, and relates to an implementation in which at least a portion of the functionality is implemented as one or more virtual components. Some or all of the functions described herein may be implemented as virtual components executed by one or more virtual machines (VMs) implemented in one or more virtual environments 900 hosted by one or more of hardware nodes, such as a hardware computing device that operates as an access network node, UE, core network node, or host. Further, in embodiments in which a virtual node does not require radio connectivity (e.g., a core network node or host), then the node may be entirely virtualized. In some embodiments, the virtualization environment 900 includes components defined by the O-RAN Alliance, such as an O-Cloud environment orchestrated by a Service Management and Orchestration Framework via an O-2 interface.

[0171] Applications 902 (which may alternatively be called software instances, virtual appliances, network functions, virtual nodes, virtual network functions, etc.) are run in the virtualization environment Q400 to implement some of the features, functions, and / or benefits of some of the embodiments disclosed herein.

[0172] Hardware 904 includes processing circuitry, memory that stores software and / or instructions executable by hardware processing circuitry, and / or other hardware devices as described herein, such as a network interface, input / output interface, and so forth. Software may be executed by the processing circuitry to instantiate one or more virtualization layers 906 (also referred to as hypervisors or virtual machine monitors (VMMs)), provide VM 908A and VM 908B (which may be collectively referred to as VMs 908), and / or perform any of the functions, features and / or benefits described in relation with some embodiments describedherein. The virtualization layer 906 may present a virtual operating platform that appears like networking hardware to one or more of the VMs 908.

[0173] The VMs 908 comprise virtual processing, virtual memory, virtual networking or interface and virtual storage, and may be run by virtualization layer 906. Different embodiments of the instance of a virtual appliance 902 may be implemented on one or more of VMs 908, and the implementations may be made in different ways. Virtualization of the hardware is in some contexts referred to as network function virtualization (NFV). NFV may be used to consolidate many network equipment types onto industry standard high volume server hardware, physical switches, and physical storage, which can be located in data centers, and customer premise equipment.

[0174] In the context of NFV, each of the VMs 908 may be a software implementation of a physical machine that runs programs as if they were executing on a physical, non-virtualized machine. Each of the VMs 908, and that part of hardware 904 that executes that VM, be it hardware dedicated to that VM and / or hardware shared by that VM with others of the VMs, forms separate virtual network elements. Still in the context of NFV, a virtual network function is responsible for handling specific network functions that run in one or more of the VMs 908 on top of the hardware 904 and corresponds to an application 902.

[0175] Hardware 904 may be implemented in a standalone network node with generic or specific components. Hardware 904 may implement some functions via virtualization. Alternatively, hardware 904 may be part of a larger cluster of hardware (e.g. such as in a data center or CPE) where many hardware nodes work together and are managed via management and orchestration 910, which, among others, oversees lifecycle management of applications 902. In some embodiments, hardware 904 is coupled to one or more radio units that each include one or more transmitters and one or more receivers that may be coupled to one or more antennas. Radio units may communicate directly with other hardware nodes via one or more appropriate network interfaces and may be used in combination with the virtual components to provide a virtual node with radio capabilities, such as a radio access node or a base station. In some embodiments, some signaling can be provided with the use of a control system 912 which may alternatively be used for communication between hardware nodes and radio units.

[0176] Although the computing devices described herein (e.g., UEs, network nodes, hosts) may include the illustrated combination of hardware components, other embodiments may comprise computing devices with different combinations of components. It is to be understood that these computing devices may comprise any suitable combination of hardware and / or software needed to perform the tasks, features, functions and methods disclosed herein.Determining, calculating, obtaining or similar operations described herein may be performed by processing circuitry, which may process information by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored in the network node, and / or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination. Moreover, while components are depicted as single boxes located within a larger box, or nested within multiple boxes, in practice, computing devices may comprise multiple different physical components that make up a single illustrated component, and functionality may be partitioned between separate components. For example, a communication interface may be configured to include any of the components described herein, and / or the functionality of the components may be partitioned between the processing circuitry and the communication interface. In another example, non-computationally intensive functions of any of such components may be implemented in software or firmware and computationally intensive functions may be implemented in hardware.

[0177] In certain embodiments, some or all of the functionality described herein may be provided by processing circuitry executing instructions stored on in memory, which in certain embodiments may be a computer program product in the form of a non-transitory computer-readable storage medium. In alternative embodiments, some or all of the functionality may be provided by the processing circuitry without executing instructions stored on a separate or discrete device-readable storage medium, such as in a hard-wired manner. In any of those particular embodiments, whether executing instructions stored on a non-transitory computer-readable storage medium or not, the processing circuitry can be configured to perform the described functionality. The benefits provided by such functionality are not limited to the processing circuitry alone or to other components of the computing device, but are enjoyed by the computing device as a whole, and / or by end users and a wireless network generally.

Claims

CLAIMS1. A method performed by a wireless device, the method comprising:measuring (302) one or more signals, wherein the one or more signals are associated with one or more cells, and wherein the one or more cells comprise one or more candidate cells for handover of the wireless device;determining (304), based on the measurement of the one or more signals, that at least one first signal of the one or more signals meets a first criterion for providing a report to a network node of a serving cell of the wireless device, wherein the report comprises first information indicative of the measurement of the one or more signals, and wherein the wireless device is configured with a first resource for transmitting the report; andif (306) a size of the first resource is inadequate for transmitting the report, initiating transmission of a first truncated report towards the network node, wherein the first truncated report comprises a first portion of the first information.

2. The method of claim 1, wherein the measurement of the one or more signals is performed according to a measurement configuration.

3. The method of claim 2, further comprising:receiving the measurement configuration from the network node.

4. The method of any of the previous claims, further comprising:receiving information indicative of the first criterion from the network node.

5. The method of any of the previous claims, further comprising:selecting the first portion of the first information to be comprised in the first truncated report.

6. The method of claim 5, wherein the first portion of the first information comprises measurement information corresponding to the at least one first signal.

7. The method of claim 6, wherein the first portion of the first information only comprises measurement information corresponding to the at least one first signal.

8. The method of claim 5, wherein selecting the first portion of the first informationcomprises selecting the first portion of the first information based on a measurement quality of the one or more signals.

9. The method of claim 8, wherein the first portion comprises measurement information corresponding to at least one second signal of the one or more signals, wherein the at least one second signal is associated with a highest measurement quality of the one or more signals.

10. The method of claim 8 or 9, wherein the measurement quality of the one or more signals is:a LI- Reference Signal Received Quality, Ll-RSRQ; and / orbased on a Ll-Reference signal received power, Ll-RSRP.

11. The method of claim 5, the method comprising:performing a synchronization procedure with at least one first candidate cell of the one or more candidate cells, wherein the first portion of the first information comprises measurement information associated with at least one third signal, and wherein the at least one third signal is associated with the at least one first candidate cell.

12. The method of claim 11, wherein the synchronization procedure comprises an uplink, UL, synchronization procedure, and / or a downlink, DL, synchronization procedure.

13. The method of claim 11 or 12, wherein the synchronization procedure is an early synchronization procedure.

14. The method of any of the previous claims, further comprising:if the size of the first resource is adequate for transmitting the report, initiating transmission of the report towards the network node, wherein the report comprises the first information.

15. The method of claim 14, wherein the size of the first resource is adequate for transmitting the report if a data size of the first resource is greater than or equal to a data size of the first information.

16. The method of any of the previous claims, wherein the size of the first resource isinadequate for transmitting the report if a data size of the first resource is less than a data size of the first information.

17. The method of any of the previous claims, further comprising:separating the first information into the first portion of the first information and a remaining portion of the first information.

18. The method of claim 17, wherein the first portion of the first information and the remaining portion of the first information are different.

19. The method of claim 17 or 18, wherein the separation of the first information is based on a size of the first resource.

20. The method of any of claims 17 to 19, further comprising:storing the remaining portion of the first information.

21. The method of claim 20, wherein the remaining portion of the first information is stored in a memory of the wireless device.

22. The method of any of claims 17 to 21, further comprising:if the size of the first resource is inadequate for transmitting the report:initiating transmission of one or more additional truncated reports towards the network node, wherein the transmission of the one or more additional truncated reports is initiated after transmission of the first truncated report, and wherein each additional truncated report of the one or more additional truncated reports comprises at least a part of the remaining portion of the first information.

23. The method of claim 22, further comprising:determining a transmission priority for the one or more additional truncated reports, wherein the transmission priority is determined based on the at least the part of the remaining portion comprised in each additional truncated report of the one or more additional truncated reports.

24. The method of claim 23, wherein the transmission priority is determined based on a measurement quality associated with measurement information comprised in the remaining portion of the first information.

25. The method of claim 23, wherein the transmission priority is determined based on an uplink, UL, synchronization status and / or a downlink, DL, synchronization status of measurement information comprised in the remaining portion of the first information.

26. The method of claim 23, wherein the transmission priority is determined based on the fulfillment of an event condition status of measurement information comprised in the remaining portion of the first information.

27. The method of claim 23, wherein the transmission priority is determined based on a cell associated with measurement information comprised in the remaining portion of the first information.

28. The method of any of claims 23 to 27, further comprising:initiating transmission of the one or more additional truncated reports based on the determined transmission priority.

29. The method of any of the previous claims, wherein the report is a measurement report.

30. The method of any of the previous claims, wherein the report is a medium access control, MAC, control element, MAC CE, report.

31. The method of any of the previous claims, wherein the one or more signals comprise:one or more synchronization signal blocks, SSBs, and / orone or more channel state information reference signals, CSI-RS.

32. The method of any of the previous claims, wherein the one or more cells comprises the serving cell of the wireless device.

33. The method of any of the previous claims, wherein the one or more signals comprise oneor more of:a reference signal; anda beam.

34. The method of any of the previous claims, wherein the first truncated report comprises information indicative of:an identifier of the at least one first signal, andan identifier indicative of the first criterion.

35. The method of any of the previous claims, wherein the first resource comprises one or more of:an uplink, UL, grant; anda Physical Uplink Shared Channel, PUSCH, resource.

36. The method of any of the previous claims, wherein initiating transmission of the first truncated report is performed using the first resource.

37. The method of any of the previous claims, wherein the first truncated report comprises information indicative of whether the first truncated report is a truncated report.

38. The method of any of the previous claims, wherein the first truncated report comprises information indicative of whether one or more additional truncated reports are to be transmitted by the wireless device.

39. The method of claim 38, wherein the information indicative of whether one or more additional truncated reports are to be transmitted by the wireless device comprises:a flag indicator;information indicative of a total number of truncated reports to be transmitted by the wireless device; and / orinformation indicative of an amount of the first information.

40. The method of any of the previous claims, wherein the one or more candidate cells comprise one or more L1 / L2 triggered mobility, LTM, candidate cells.

41. The method of any of the previous claims, when directly or indirectly dependent on claim 2, wherein the measurement configuration comprises information identifying the one or more signals.

42. The method of claim 41, wherein the information identifying the one or more signals comprises:a synchronization signal block, SSB, index associated with a signal of the one or more signals;a reference signal, RS, index associated with a signal of the one or more signals;a channel state information reference signal, CSI-RS, index associated with a signal of the one or more signals; and / ora cell ID associated with a cell of the one or more cells.

43. The method of any of the previous claims, wherein measuring the one or more signals comprises performing one or more LI measurements on the one or more signals.

44. The method of any of the previous claims, further comprising:providing user data; andforwarding the user data to a host via the transmission to the network node.

45. A method performed by a network node, wherein the network node is a network node of a serving cell of a wireless device, the method comprising:configuring (402) the wireless device to:measure one or more signals, wherein the one or more signals are associated with one or more cells, and wherein the one or more cells comprise one or more candidate cells for handover of the wireless device;determine, based on the measurement of the one or more signals, that one or more conditions are fulfilled for providing a report to the network node, wherein the report comprises first information indicative of the measurement of the one or more signals, and wherein the wireless device is configured with a first resource for transmitting the report; andif a size of the first resource is inadequate for transmitting the report, initiate transmission of a first truncated report towards the network node, wherein the first truncated report comprises a portion of the first information.

46. The method of claim 45, wherein the measurement of the one or more signals is performed according to a measurement configuration.

47. The method of claim 45 or 46, further comprising:initiating transmission of the measurement configuration towards the wireless device.

48. The method of any of claims 45 to 47, further comprising:initiating transmission of information indicative of the first criterion towards the wireless device.

49. The method of any of claims 45 to 48, further comprising:if the size of the first resource is inadequate for transmitting the report, receiving the first truncated report from the wireless device.

50. The method of any of claims 45 to 49, further comprising:selecting the one or more candidate cells.

51. The method of claim 50, further comprising:initiating transmission of information indicative of the one or more candidate cells towards the wireless device.

52. The method of any of claims 45 to 51, further comprising:configuring the wireless device to:select the first portion of the first information to be comprised in the first truncated report.

53. The method of claim 52, wherein the first portion of the first information comprises measurement information corresponding to the at least one first signal.

54. The method of 53, wherein the first portion of the first information only comprises measurement information corresponding to the at least one first signal.

55. The method of claim 52, wherein selecting the first portion of the first informationcomprises selecting the first portion of the first information based on a measurement quality of the one or more signals.

56. The method of the claim 55, wherein the first portion comprises measurement information corresponding to at least one second signal of the one or more signals, wherein the at least one second signal is associated with a highest measurement quality of the one or more signals.

57. The method of claim 55 or 56, wherein the measurement quality of the one or more signals is:a LI- Reference Signal Received Quality, Ll-RSRQ; and / orbased on a Ll-Reference signal received power, Ll-RSRP.

58. The method of claim 52, the method comprising:configuring the wireless device to:perform a synchronization procedure with at least one first candidate cell of the one or more candidate cells, wherein the first portion of the first information comprises measurement information associated with at least one third signal, and wherein the at least one third signal is associated with the at least one first candidate cell.

59. The method of claim 58, wherein the synchronization procedure comprises an uplink, UL, synchronization procedure, and / or a downlink, DL, synchronization procedure.

60. The method of claim 58 or 59, wherein the synchronization procedure is an early synchronization procedure.

61. The method of any of claims 45 to 60, further comprising:configuring the wireless device to:if the size of the first resource is adequate for transmitting the report, initiate transmission of the report towards the network node, wherein the report comprises the first information.

62. The method of claim 61, further comprising:if the size of the first resource is adequate for transmitting the report, receiving the reportfrom the wireless device.

63. The method of claim 62 or 63, wherein the size of the first resource is adequate for transmitting the report if a data size of the first resource is greater than or equal to a data size of the first information.

64. The method of any of claims 45 to 63, wherein the size of the first resource is inadequate for transmitting the report if a data size of the first resource is less than a data size of the first information.

65. The method of any of claims 45 to 64, further comprising:configuring the wireless device to:separate the first information into the first portion of the first information and a remaining portion of the first information.

66. The method of claim 65, wherein the first portion of the first information and the remaining portion of the first information are different.

67. The method of claim 65 or 66, wherein the separation of the first information is based on a size of the first resource.

68. The method of any of claims 65 to 67, further comprising:configuring the wireless device to:store the remaining portion of the first information.

69. The method of claim 68, wherein the remaining portion of the first information is stored in a memory of the wireless device.

70. The method of any of claims 65 to 69, further comprising:configuring the wireless device to:if the size of the first resource is inadequate for transmitting the report: initiate transmission of one or more additional truncated reports towards the network node, wherein the transmission of the one or more additional truncatedreports is initiated after transmission of the first truncated report, wherein each additional truncated report of the one or more additional truncated reports comprises at least a part of the remaining portion of the first information.

71. The method of claim 70, further comprising:if the size of the first resource is inadequate for transmitting the report, receiving the one or more additional truncated reports from the wireless device.

72. The method of claim 71, further comprising:configuring the wireless device to:determine a transmission priority for the one or more additional truncated reports, wherein the determination of transmission priority is based on the at least the part of the remaining portion comprised in each additional truncated report of the one or more additional truncated reports.

73. The method of claim 72, wherein the transmission priority is determined based on a measurement quality associated with measurement information comprised in the remaining portion of the first information.

74. The method of claim 72, wherein the transmission priority is determined based on an uplink, UL, synchronization status and / or a downlink, DL, synchronization status of measurement information comprised in the remaining portion of the first information.

75. The method of claim 72, wherein the transmission priority is determined based on the fulfillment of an event condition status of measurement information comprised in the remaining portion of the first information.

76. The method of claim 72, wherein the transmission priority is determined based on a cell associated with measurement information comprised in the remaining portion of the first information.

77. The method of any of claims 72 to 76, further comprising:configuring the wireless device to:initiate transmission of the one or more additional truncated reports based on thedetermined transmission priority.

78. The method of any of claims 45 to 77, wherein the report is a measurement report.

79. The method of any of claims 45 to 78, wherein the report is a medium access control, MAC, control element, MAC CE, report.

80. The method of any of claims 45 to 79, wherein the one or more signals comprise:one or more synchronization signal blocks, SSBs, and / orone or more channel state information reference signals, CSI-RS.

81. The method of any of claims 45 to 80, wherein the one or more cells comprises the serving cell of the wireless device.

82. The method of any of claims 45 to 81, wherein the one or more signals comprise one or more of:a reference signal; anda beam.

83. The method of any of claims 45 to 82, wherein the first truncated report comprises information indicative of:an identifier of the at least one first signal, andan identifier indicative of the first criterion.

84. The method of any of claims 45 to 83, wherein the first resource comprises one or more of:an uplink, UL, grant; anda Physical Uplink Shared Channel, PUSCH, resource.

85. The method of any of claims 45 to 84, wherein initiating transmission of the first truncated report is performed using the first resource.

86. The method of any of claims 45 to 85, wherein the first truncated report comprises information indicative of whether the first truncated report is a truncated report.

87. The method of any of claims 45 to 86, wherein the first truncated report comprises information indicative of whether one or more additional truncated reports are to be transmitted by the wireless device.

88. The method of claim 87, wherein the information indicative of whether one or more additional truncated reports are to be transmitted by the wireless device comprises:a flag indicator;information indicative of a total number of truncated reports to be transmitted by the wireless device; and / orinformation indicative of an amount of the first information.

89. The method of any of claims 45 to 88, wherein the one or more candidate cells comprise one or more L1 / L2 triggered mobility, LTM, candidate cells.

90. The method of any of claims 45 to 89, when directly or indirectly dependent on claim 43, wherein the measurement configuration comprises information identifying the one or more signals.

91. The method of claim 89, wherein the information identifying the one or more signals comprises:a synchronization signal block, SSB, index associated with a signal of the one or more signals;a reference signal, RS, index associated with a signal of the one or more signals;a channel state information reference signal, CSI-RS, index associated with a signal of the one or more signals; and / ora cell ID associated with a cell of the one or more cells.

92. The method of any of claims 45 to 91, whereinthe network node is a gNodeB, gNB.

93. The method of any of claims 45 to 92, wherein configuring the wireless device comprises initiating transmission of configuration information towards the wireless device.

94. The method of any of claims 45 to 93, wherein measuring the one or more signals comprises performing one or more LI measurements on the one or more signals.

95. The method of any of claims 45 to 94, further comprising:obtaining user data; andforwarding the user data to a host or a user equipment.

96. A method performed by a network node, wherein the network node is a network node of a serving cell of a wireless device, the method comprising:configuring the wireless device to perform any of the operations of any claims 1 to 44.

97. The method of claim 96, wherein configuring the wireless device to perform any of the operations of any of claims 1 to 44 comprises:initiating transmission of configuration information, wherein the configuration information is for configuring the wireless device to perform any of the operations of claims 1 to 44.

98. A wireless device (512, 612, 700), comprising:processing circuitry (702) configured to cause the wireless device to:measure one or more signals, wherein the one or more signals are associated with one or more cells, and wherein the one or more cells comprise one or more candidate cells for handover of the wireless device;determine, based on the measurement of the one or more signals, that at least one first signal of the one or more signals meets a first criterion for providing a report to a network node of a serving cell of the wireless device, wherein the report comprises first information indicative of the measurement of the one or more signals, and wherein the wireless device is configured with a first resource for transmitting the report; andif a size of the first resource is inadequate for transmitting the report, initiate transmission of a first truncated report towards the network node, wherein the first truncated report comprises a first portion of the first information.

99. The wireless device (512, 612, 700) as claimed in claim 98, wherein the processing circuitry (702) is configured to perform any of the operations of claims 2 to 44.

100. A network node (510, 610, 800), wherein the network node is a network node of a serving cell of a wireless device, the network node comprising:processing circuitry (802) configured to cause the network node to:configure the wireless device to:measure one or more signals, wherein the one or more signals are associated with one or more cells, and wherein the one or more cells comprise one or more candidate cells for handover of the wireless device;determine, based on the measurement of the one or more signals, that one or more conditions are fulfilled for providing a report to the network node, wherein the report comprises first information indicative of the measurement of the one or more signals, and wherein the wireless device is configured with a first resource for transmitting the report; andif a size of the first resource is inadequate for transmitting the report, initiate transmission of a first truncated report towards the network node, wherein the first truncated report comprises a portion of the first information.

101. The network node (510, 610, 800) as claimed in claim 100, wherein the processing circuitry is configured to perform any of the operations of any of claims 46 to 95, and / or any of claims 96 or 97.

102. A computer program product comprising a non-transitory computer-readable medium having computer-readable code embodied therein, the computer-readable code being configured such that, on execution by a suitable computer or processing circuitry, the computer or processing circuitry is caused to perform the method of any of claims 1 to 44, any of claims 45 to 95, and / or any of claims 96 or 97.

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