Event-triggered reporting

Abstract

An apparatus comprising means for performing a layer one (L1) measurement; determining if a L1 measurement report event is triggered; transmit an identifier of the triggered L1 measurement report event via a L1 resource; transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

Description

[0001] TITLE

[0002] EVENT-TRIGGERED REPORTING.

[0003] TECHNOLOGICAL FIELD

[0004] Examples of the disclosure relate to event-triggered reporting.

[0005] BACKGROUND

[0006] Mobile telecommunication networks are adaptive and rely on measurements to control adaptation.

[0007] Measurements at a terminal apparatus are often made and reported periodically.

[0008] The periodic reporting of a measurement could unnecessarily use resources.

[0009] The periodic reporting of a measurement could be delayed.

[0010] It would be desirable to have event-triggered reporting, where the measurement report is sent when triggered by an event.

[0011] BRIEF SUMMARY

[0012] According to various, but not necessarily all, examples there is provided an apparatus comprising means for performing a layer one (L1 ) measurement; determining if a L1 measurement report event is triggered; transmit an identifier of the triggered L1 measurement report event via a L1 resource; transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0013] In some but not necessarily all examples, the dependency of the uplink resource upon the triggered L1 measurement report event is preconfigured or dynamically configured by a network.

[0014] In some but not necessarily all examples, the identifier of the triggered L1 measurement report event and the L1 resource used for transmission of the identifier are preconfigured by a network. In some but not necessarily all examples, the uplink resource dependent upon the triggered L1 measurement report event is a preconfigured resource selected by the apparatus.

[0015] In some but not necessarily all examples, the uplink resource dependent upon the triggered L1 measurement report event is a resource dynamically configured by a network.

[0016] In some but not necessarily all examples, the apparatus is configured to transmit the event-triggered measurement report for the triggered L1 measurement report event via the uplink resource dependent upon the triggered L1 measurement report event using at least one of: a preconfigured uplink resource associated with the triggered L1 measurement report event, an uplink resource scheduled by the network in dependence upon the identifier of the triggered L1 measurement report event.

[0017] In some but not necessarily all examples, the apparatus is configured to use a periodic resource for the L1 resource.

[0018] In some but not necessarily all examples, the L1 resource used for transmission of the identifier of the triggered L1 measurement report event is controlled to indicate the uplink resource, for transmission of the event-triggered measurement report, dependent upon the triggered L1 measurement report event.

[0019] In some but not necessarily all examples, the apparatus is configured to use a shared resource for the L1 resource and the uplink resource.

[0020] In some but not necessarily all examples, the apparatus is configured to use a periodic resource for the uplink resource.

[0021] In some but not necessarily all examples, the apparatus is configured to use a reporting occasion for the uplink resource, wherein the reporting occasion is dependent upon the triggered L1 measurement report event.

[0022] In some but not necessarily all examples, the apparatus is configured to determine if a L1 measurement report event is triggered based on one or more conditions and a result of the L1 measurement, the one or more conditions are associated with one or more L1 measurements. In some but not necessarily all examples, the apparatus is configured to determine if a L1 measurement report event is triggered by comparing a reception quality of one or more references signals to a threshold.

[0023] In some but not necessarily all examples, the identifier is at least one of: a bitmap comprising a series of multiple independent bits, wherein each independent bit maps to a L1 measurement report event and the value of the bit indicates a trigger-status of the L1 measurement report event or a codepoint comprising a combination of bits that maps, as a combination, to L1 measurement report event outcomes.

[0024] According to various, but not necessarily all, examples there is provided a method comprising: performing a layer one (L1 ) measurement; determining if a L1 measurement report event is triggered; determining to transmit an identifier of the triggered L1 measurement report event via a L1 resource; and determining to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0025] According to various, but not necessarily all, examples there is provided a computer program comprising instruction that when executed by one or more processors of an apparatus cause the apparatus to: perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; and determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0026] According to various, but not necessarily all, examples there is provided an apparatus comprising means for configuring a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; receiving, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; receiving, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

[0027] In some but not necessarily all examples, the dependency of the uplink resource upon the triggered L1 measurement report event is preconfigured by the apparatus before receiving the transmitted identifier or is dynamically configured by the apparatus based on the received transmitted identifier.

[0028] In some but not necessarily all examples, the apparatus comprises means for configuring, before receiving the transmitted identifier, the identifier of the triggered L1 measurement report event and the L1 resource used for transmission of the identifier.

[0029] In some but not necessarily all examples, the apparatus comprises means for configuring a periodic resource for the L1 resource.

[0030] In some but not necessarily all examples, the apparatus comprises means for configuring a shared resource for the L1 resource and the uplink resource dependent upon the triggered L1 measurement report event.

[0031] In some but not necessarily all examples, the apparatus comprises means for configuring a periodic resource for the uplink resource.

[0032] In some but not necessarily all examples, the apparatus comprises means for configuring a reporting occasion for the uplink resource dependent upon the triggered L1 measurement report event. According to various, but not necessarily all, examples there is provided a method comprising: configuring a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; receiving, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; and receiving, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

[0033] According to various, but not necessarily all, examples there is provided a computer program comprising instruction that when executed by one or more processors of an apparatus cause the apparatus to: configure a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; obtain, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; obtain, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event. According to various, but not necessarily all, embodiments there is provided examples as claimed in the appended claims.

[0034] Although the above examples of the disclosure and optional features are described separately, it is to be understood that their provision in all possible combinations and permutations is contained within the disclosure. It is to be understood that various examples of the disclosure can comprise any or all the features described in respect of other examples of the disclosure, and vice versa. Also, it is to be appreciated that any one or more or all the features, in any combination, may be implemented by / comprised in / performable by an apparatus, a method, and / or computer program instructions as desired, and as appropriate. The description of a function should additionally be considered to also disclose any means suitable for performing that function

[0035] BRIEF DESCRIPTION

[0036] Some examples will now be described with reference to the accompanying drawings in which:

[0037] FIG. 1 shows an example of the subject matter described herein;

[0038] FIG. 2 shows another example of the subject matter described herein;

[0039] FIG. 3 shows another example of the subject matter described herein;

[0040] FIG. 4 shows another example of the subject matter described herein;

[0041] FIG. 5 shows another example of the subject matter described herein;

[0042] FIG. 6 shows another example of the subject matter described herein;

[0043] FIG. 7 shows another example of the subject matter described herein;

[0044] FIG. 8 shows another example of the subject matter described herein;

[0045] FIG. 9 shows another example of the subject matter described herein;

[0046] FIG. 10A shows another example of the subject matter described herein;

[0047] FIG. 10B shows another example of the subject matter described herein;

[0048] FIG. 11 shows another example of the subject matter described herein; and FIG. 12 shows another example of the subject matter described herein.

[0049] The figures are not necessarily to scale. Certain features and views of the figures can be shown schematically or exaggerated in scale in the interest of clarity and conciseness. For example, the dimensions of some elements in the figures can be exaggerated relative to other elements to aid explication. Similar reference numerals are used in the figures to designate similar features. For clarity, all reference numerals are not necessarily displayed in all figures.

[0050] DETAILED DESCRIPTION

[0051] Fig. 1 illustrates an example of a network 100 comprising a plurality of network entities including terminal apparatus 110, node apparatus 120 and one or more network apparatus 130. The terminal apparatus 110 and node apparatus 120 communicate 124 with each other. The one or more network apparatus 130 communicate 128 with the node apparatus 120.

[0052] In some examples the one or more network apparatus 130 communicate with the terminal apparatus 110. The one or more network apparatus 130 can, in some examples, communicate with each other. The one or more node apparatus 120 can, in some examples, communicate 126 with each other.

[0053] The network 100 can be a cellular network comprising a plurality of cells 122 each served by a node apparatus 120. In this example, the interface between the terminal apparatus 110 and a node apparatus 120 defining a cell 122 is a wireless interface 124.

[0054] The node apparatus 120 comprises one or more cellular radio transceivers. The terminal apparatus 110 comprises one or more cellular radio transceivers.

[0055] In the example illustrated the cellular network 100 is a third generation Partnership Project (3GPP) network in which the terminal apparatus 110 are user equipment (UE) and the node apparatus 120 can be access nodes such as base stations.

[0056] A user equipment comprises a mobile equipment. Where reference is made to user equipment that reference includes and encompasses, wherever possible, a reference to mobile equipment.

[0057] In some examples, during operation, a user equipment 110 comprises a mobile equipment comprising a smart card for authentication / encryption etc. such as a Subscriber Identity Module (SIM). In some examples, during operation, a user equipment 110 comprises mobile equipment comprising circuitry embedded as part of the user equipment 110 for authentication / encryption such as software SIM.

[0058] The node apparatus 120 can be any suitable access node such as a base station or transmission reception point. The node apparatus 120 can be a network element responsible for radio transmission and reception in one or more cells 122, to or from the UE 110. The node apparatus 120 can be a network element in a Radio Access Network (RAN), an Open-Radio Access Network (O-RAN) or any other suitable type of network.

[0059] The network apparatus 130 can be part of a core network. The network apparatus 130 can be configured to manage functions relating to connectivity for the UEs 110. For example, the network apparatus 130 can be configured to manage functions such as connectivity, mobility, authentication, authorization and / or other suitable functions. In some examples the network apparatus 130 can comprise an Access and Mobility management Function (AMF) and / or a User Plane Function (UPF) or any other suitable entities.

[0060] In the example of Fig. 1 the network apparatus 130 is shown as a single entity. In some examples the network apparatus 130 could be distributed across a plurality of entities. For example, the network apparatus 130 could be cloud based or distributed in any other suitable manner. The network apparatus 130 can be a core network node.

[0061] The network 100 can be a 4G or 5G network, for example. It can for example be a New Radio (NR) network that uses gNB or eNB as access nodes 120. New Radio is the 3GPP name for 5G technology. In such cases the node apparatus 120 can comprise gNodeBs (gNBs) 120 configured to provide user plane and control plane protocol terminations towards the UE 110 and / or to perform any other suitable functions. The gNBs 120 are interconnected with each other by means of an X2 / Xn interface 126. The gNBs are also connected by means of the N2 interface 128 to the network apparatus 130. The gNBs can be connected to an AMF or any other suitable network apparatus 130. Other types of networks and interfaces could be used in other examples. Other types of network could comprise next generation mobile and communication network, for example, a 6G network. FIG. 2 illustrates an example of an apparatus 110, for example user equipment 110, comprising means for: performing a layer one (L1 ) measurement 202; determining 204 if a L1 measurement causes a triggered L1 measurement report event 205; transmitting an identifier 206 of the triggered L1 measurement report event 205 via a L1 resource 207; and transmitting an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via an uplink resource 209 dependent upon the triggered L1 measurement report event 205.

[0062] The user equipment 110 performs L1 measurement 202. L1 measurement 202 is measurement at the physical (PHY) layer, which is the lowest layer of the protocol stack.

[0063] In some but not necessarily all examples, the L1 measurement 202 measures a physical layer characteristic of a downlink signal 203. In some but not necessarily all examples, the downlink signal 203 is a reference signal.

[0064] Examples of physical layer characteristics include but are not limited to measurements of received signal strength or power.

[0065] Examples of physical layer characteristics include but are not limited to Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indicator (RSSI).

[0066] In some but not necessarily all examples, the downlink signal 203 is a beam (a directed signal). In 3GPP the synchronization block (SSB) can be used as a wide-beam reference signal and the Channel State Information reference signal (CSI-RS) can be used as a narrow-beam reference signal. In some examples, the CSI-RS may be transmitted using the same beam (or spatial filter) as SSB.

[0067] The user equipment determines 204 if a L1 measurement 202 triggers a L1 measurement report event, referred to as a triggered L1 measurement report event 205. The user equipment 110 therefore determines 204 if a L1 measurement 202 causes a triggered L1 measurement report event 205. A L1 measurement 202 causes a triggered L1 measurement report event 205 if the result of the L1 measurement 202 (or results of L1 measurements 202) satisfy a trigger condition for the L1 measurement report event. If a trigger condition for a L1 measurement report event is satisfied by a measurement 202 then that measurement report event is triggered, causing a triggered L1 measurement report event.

[0068] In at least some examples the trigger condition is based on a signal quality measurement 202.

[0069] In at least some examples the trigger condition is based on a received signal quality of a reference signal compared to an absolute or relative threshold. The relative threshold can be based on received signal quality of the reference signal for another candidate. The received signal quality of a reference signal can be based on a single reference signal or a set of reference signals.

[0070] The triggered L1 measurement report event 205 is used to obtain an associated identifier 206 of the triggered L1 measurement report event 205.

[0071] The user equipment 110 transmits the identifier 206 of the triggered L1 measurement report event 205 via a L1 resource 207.

[0072] In at least some examples, the L1 resource 207 comprises at least one limited time and or frequency resource, for example at least a physical resource block (PRB).

[0073] The triggered L1 measurement report event 205 is used to obtain an uplink resource 209 dependent upon the triggered L1 measurement report event 205. In some examples (e.g. FIGs 4, 5, 6), the uplink resource 209 is preconfigured. In other examples (e.g. FIGs 7, 9) the uplink resource 209 is dynamically configured.

[0074] The user equipment 110 transmits an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via the uplink resource 209 which is dependent upon the triggered L1 measurement report event 205. In some examples, the identifier 206 is transmitted by the user equipment 110 in uplink control information (UCI).The UCI comprises uplink information field for at least one identifier 206 associated with the at least one L1 measurement reporting event. The uplink resource 209 carrying uplink information field for identifier 206 may be a new physical uplink control channel (PUCCH) format.

[0075] In at least some examples, the dependency of the uplink resource 209 upon the triggered L1 measurement report event 205 is configured by the network.

[0076] In at least some examples, the dependency of the uplink resource 209 upon the triggered L1 measurement report event 205 is preconfigured by the network before transmitting the identifier 206 of the triggered L1 measurement report event 205 via a L1 resource 207. Examples are illustrated in FIGs 4, 5, 6.

[0077] In at least some examples, the dependency of the uplink resource 209 upon the triggered L1 measurement report event 205 is post-configured (dynamically configured) by the network after transmitting the identifier 206 of the triggered L1 measurement report event 205 via a L1 resource 207. Examples are illustrated in FIGs 7, 9.

[0078] In at least some examples, the identifier 206 of the triggered L1 measurement report event 205 is preconfigured by the network before transmitting the identifier 206. In at least some examples, the L1 resource 207 for an identifier 206 / triggered L1 measurement report event 205 is preconfigured by the network before transmitting the identifier 206.

[0079] FIG 3 illustrates an example of configuration by the network. In this example a base station 120 transmits a configuration message 220 or multiple configuration messages 220. In at least some examples, the configuration message 220 is a radio resource control configuration message or reconfiguration message.

[0080] In this example, and other examples (FIGs 3 to 9) a configuration message 220 is transmitted by the network before transmitting the identifier 206. In other examples, a configuration message 220 is transmitted by the network after transmitting the identifier 206 (FIGs 7, 9).

[0081] In at least some examples, the configuration by the network configures the L1 measurement 202 and the downlink signal 203.

[0082] In at least some examples, the configuration by the network configures the trigger condition for the triggered L1 measurement report event 205.

[0083] In at least some examples, the configuration by the network configures the identifier 206 for the triggered L1 measurement report event 205.

[0084] In at least some examples, the configuration by the network configures, at least partially, the L1 resource 207 used for transmitting the identifier 206. In at least some examples, the configuration by the network configures a physical channel for transmitting the identifier 206 (FIG 5). In at least some examples, the configuration by the network configures a resource that is shared and used for the L1 resource 207 and for the uplink resource 209 (FIG 5). In at least some examples, the configuration by the network configures a resource that comprises a series of periodic reporting occasions for transmitting the identifier 206 (FIG 6). In at least some examples, the configuration by the network configures one or more specific periodic reporting occasions for different triggered L1 measurement report events 205 for transmitting the identifier 206 of that triggered L1 measurement report event 205 (FIG 6).

[0085] In some but not necessarily all examples, the configuration by the network configures, at least partially, the uplink resource 209 used for transmitting the event-triggered measurement report 210. In at least some examples, the configuration by the network configures a physical channel for transmitting the event-triggered measurement report 210 (FIG 5). In at least some examples, the configuration by the network configures a resource that is shared and used for the L1 resource 207 and for the uplink resource 209 (FIG 5). In at least some examples, the configuration by the network configures an uplink resource 207 that comprises a series of periodic reporting occasions for transmitting the event-triggered measurement report 210 (FIG 6). In at least some examples, the configuration by the network configures a L1 resource 207 comprising one or more specific periodic reporting occasions, for different triggered L1 measurement report events 205, for transmitting an identifier 206 of the triggered L1 measurement report event (FIG 6).

[0086] The configuration by the network can, for example, be achieved using one or more configuration messages 220. These can, for example, include an event configuration, a periodic PUCCH configuration, a resources configuration, a reporting configuration.

[0087] FIG 3 illustrates an example similar to that illustrated in FIG 2. The description of FIG 2 also applies to FIG 3. In FIG 3, the base station 120 transmits a configuration message 220 to the user equipment 110 before measurement 202.

[0088] The user equipment 110 can determine the uplink resource 209 used to transmit the event-triggered measurement report 210 for the triggered L1 measurement report events 205 in dependence upon the triggered L1 measurement report event 205.

[0089] The network 120 can determine the uplink resource 209 used by the user equipment 110 to transmit the event-triggered measurement report 210 for the triggered L1 measurement report event 205 in dependence upon the triggered L1 measurement report event 205 identified by the identifier 206.

[0090] FIG 4 illustrates an example similar to that illustrated in FIG 2 and 3. The description of any or all of FIG 2 and 3 also applies to FIG 4. In FIG 4, the uplink resource 209 for the triggered L1 measurement report event 205 is preconfigured before measurement 202. In at least some examples, uplink resource 209 is preconfigured for the triggered L1 measurement report event 205 by the configuration message 220. The user equipment 110 thus selects the uplink resource 209 based on the configuration message 220 and transmits an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via the uplink resource 209 which is dependent upon the triggered L1 measurement report event 205. FIG 5 illustrates an example similar to that illustrated in FIG 2, 3 and 4. The description of any or all of FIGs 2, 3 and 4 can also apply to FIG 5. In FIG 5, the uplink resource 209 for the triggered L1 measurement report event 205 is a shared resource that is used as the uplink resource 209 for the triggered L1 measurement report event 205 and as the L1 resource 207 used for transmitting the identifier 206 of the triggered L1 measurement report event 205. In at least some examples, uplink resource 209 for the triggered L1 measurement report event 205 and the L1 resource 207 used for transmitting the indicator 206 of the triggered L1 measurement report event 205 are both configured, as a shared resource, by the configuration message 220. The user equipment 110 thus transmits an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via the uplink resource 209 which is dependent upon the triggered L1 measurement report event 205.

[0091] In some examples, the shared resource is a physical uplink channel for example the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH).

[0092] FIG 6 illustrates an example similar to that illustrated in FIG 2, 3, 4 and 5. The description of any or all of FIGs 2, 3, 4 and 5 can also apply to FIG 6. In FIG 6, the uplink resource 209 for the triggered L1 measurement report event 205 is a periodic resource that is used as the uplink resource 209 for the triggered L1 measurement report event 205. In at least some examples, a particular reporting occasion (RO) 209 is used for a particular triggered L1 measurement report event 205 and the reporting occasion (RO) is dependent upon the triggered L1 measurement report event 205. In some examples, the uplink resource 209 for the triggered L1 measurement report event 205 is configured by the configuration message 220. The user equipment 110 thus transmits an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via the uplink resource 209, for example, on the particular RO which is dependent upon the triggered L1 measurement report event 205.

[0093] In some examples, the periodic resource is a physical uplink channel for example the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH). In some examples, this periodic resource is configured by downlink configuration message 220 In some examples, the periodic resource is also a shared resource as described with reference to FIG 5.

[0094] FIG 7 illustrates an example similar to that illustrated in FIG 2 and 3. The description of any or all of FIG 2 and 3 also applies to FIG 7. In FIG 7, the uplink resource 209 for the triggered L1 measurement report event 205 is dynamically configured (scheduled) after measurement 202 in response to the transmission of the identifier 206 of the triggered L1 measurement report event 205.

[0095] The network receives the transmitted identifier 206 of the triggered L1 measurement report event 205 and schedules an uplink resource 209 suitable for transmitting the event- triggered measurement report 210 of that triggered L1 measurement report event 205.

[0096] In at least some examples, uplink resource 209 is configured for the triggered L1 measurement report event 205 by a configuration message 220, for example downlink control information (DCI), sent by the network in response to the transmission of the identifier 206 of the triggered L1 measurement report event 205. The DCI configures the uplink resource 209 which is dependent upon the triggered L1 measurement report event 205 identified by the identifier 206.

[0097] In at least some examples, the configuration message 220 for dynamic configuration comprises the previously received identifier 206.

[0098] The user equipment 110 thus transmits an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via the uplink resource 209 which is dependent upon the triggered L1 measurement report event 205.

[0099] The uplink resource 209 can, for example, be a physical uplink channel, for example the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH). The uplink resource 209 can, for example, be used to transmit a medium access control (MAC) control element (CE) or L1 report (PUCCH report or PUSCH report).

[0100] FIG 8 illustrates that in some examples, the user equipment has means for transmitting an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via an uplink resource 209 dependent upon the triggered L1 measurement report event 205 using a preconfigured uplink resource associated with the triggered L1 measurement report event 205 or an uplink resource dynamically configured (e.g. scheduled) by the network.

[0101] In FIG 8 the user equipment has means for determining whether to transmit an event- triggered measurement report 210 for the triggered L1 measurement report event 205 via a preconfigured uplink resource 209 associated with the triggered L1 measurement report event 205 or an uplink resource 209 scheduled by the network in dependence upon the triggered L1 measurement report event 205.

[0102] If the user equipment 110 determines to use a preconfigured uplink resource 209 associated with the triggered L1 measurement report event 205 then it transmits the event-triggered measurement report 210 via the_preconfigured uplink resource 209 (FIG 4, 5 or 6).

[0103] If the user equipment 110 determines to use an uplink resource 209 scheduled by the network in dependence upon the triggered L1 measurement report event 205, the user equipment 110 receives a configuration message 220 configuring the uplink resource 209 and transmits an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via that configured uplink resource 209 scheduled by the network in dependence upon the triggered L1 measurement report event 205.

[0104] In some examples, the user equipment 110 can provide an indication via the message comprising the identifier 206 transmitted to the network indicating that it requires dynamic configuration of an uplink resource 209.

[0105] In other examples, the user equipment 110 and the network share the same rules for determining to use a preconfigured uplink resource 209 or a dynamically configured uplink resource 209. The user equipment 110 thus knows to expect to receive a configuration message 220 dynamically configuring the uplink resource 209 and the network 120 thus knows to send a configuration message 220 dynamically configuring the uplink resource 209.

[0106] In the preceding examples, operation has been explained with reference to one triggered L1 measurement report event 205 and transmitting one identifier 206 of the one triggered L1 measurement report event 205 via a L1 resource 207 and transmitting one event- triggered measurement report 210 for the one triggered L1 measurement report event 205 via an uplink resource 209 dependent upon the one triggered L1 measurement report event 205.

[0107] However, in some of these examples and in other examples, there is a set of possible triggered L1 measurement report events 205. In some of these examples, multiple measurement report events are triggered. An identifier 206 of the multiple triggered L1 measurement report events 205 can be transmitted via the L1 resource 207 and a single event-triggered measurement report 210 for the multiple triggered L1 measurement report events 205 can be transmitted via an uplink resource 209 dependent upon at least one of the multiple triggered L1 measurement report events 205.

[0108] In some examples the user equipment 110 comprises means for receiving from the network 120 a configuration for multiple triggered L1 measurement report events 205 comprising identifiers 206 for respective triggered L1 measurement report events 205 and comprises means for transmitting the identifier 206 of the triggered L1 measurement report event 205 via L1 resource 207 in dependence upon triggering at least one of the multiple configured measurement report events.

[0109] In some examples the transmitted identifier 206 identifies multiple triggered L1 measurement report events 205.

[0110] In some examples, the identifier 206 is a bitmap comprising a series of multiple independent bits, wherein each independent bit maps to a measurement report event and the value of the bit indicates a trigger-status of the measurement report event. In another example, a bit may map to specific event identifier of the reporting configuration. In one example, a bit may map to specific identifier of a reporting configuration identifier. The trigger status can be triggered or not triggered. In one example, the triggered status maybe indicated by setting a bit to first value (e.g. 1 ). In one example, the triggered status maybe indicated by setting a bit to a second value (e.g. 0).

[0111] In some examples, the identifier 206 is a codepoint comprising a combination of bits that maps, as a combination, to measurement report event outcomes. The outcomes can be that specific measurement report events have / have not been triggered. The outcomes can, for example, include no event triggered, one of multiple events triggered, or one of multiple configurations of multiple triggered events.

[0112] It will be appreciated from the foregoing that the base station 120 comprises means for configuring a user equipment 110 to perform a layer one (L1 ) measurement 202; determine 204 if a L1 measurement 202 causes a triggered measurement report event 205; determine to transmit an identifier 206 of the triggered L1 measurement report event 205 via a L1 resource 207; determine to transmit an event-triggered measurement report 210 for the triggered L1 measurement report event 205 via an uplink resource dependent upon the triggered L1 measurement report event 205; receiving, via the configured L1 resource 207, the transmitted identifier 206 of the triggered L1 measurement report event 205; receiving, via the uplink resource dependent upon the triggered L1 measurement report event 205, the transmitted event-triggered measurement report 210 for the triggered L1 measurement report event 205.

[0113] In some examples, the dependency of the uplink resource 209 upon the triggered L1 measurement report event 205 is preconfigured by the base station 120 before receiving the transmitted identifier 206 or is dynamically configured by the base station 120 based on the received transmitted identifier 206. In some examples, the base station 120 configures, before receiving the transmitted identifier, the identifier 206 of the triggered L1 measurement report event 205 and the L1 resource 207 used for transmission of the identifier 206.

[0114] In some examples, the base station 120 configures, a periodic resource for the L1 resource 207.

[0115] In some examples, the base station 120 configures, a shared resource for the L1 resource 207 and the uplink resource 209 dependent upon the triggered L1 measurement report event.

[0116] In some examples, the base station 120 configures a periodic resource for the uplink resource 209.

[0117] Event-triggered Layer 1 measurements 202 can for example be used in 3GPP for Lower Layer Triggered Mobility (LTM) also known as L1 / L2 triggered mobility and for MIMO and event-driven beam management.

[0118] 3GPP has defines L1 reporting for LTM as part of the CSI reporting framework (38.214, V18.1.0):

[0119] Each Reporting Setting CSI-ReportConfig is associated with a single downlink BWP (indicated by higher layer parameter BWP-ld) given in the associated CSI- ResourceConfig for channel measurement and contains the parameter(s) for one CSI reporting band: codebook configuration including codebook subset restriction, timedomain behavior, frequency granularity for CQI and PMI, measurement restriction configurations, and the CSI-related quantities to be reported by the UE such as the layer indicator (LI), L1 -RSRP, L1 -SINR, CRI, SSBRI (SSB Resource Indicator), Capabilityindex and TDCP.

[0120] Each Reporting Setting [LTM-CSI-ReportConfig] is associated with a [LTM-CSI- ResourceConfig] for channel measurement and contains the parameters(s) for timedomain behavior, the number of cells and the number of reference signals per cell provided by [noOfReportedCells], and [noOfReportedRSPerCell], respectively, comprising L1 measurement results associated with current SpCell by SpCelllnclusion.

[0121] The time domain behavior of the CSI-ReportConfig is indicated by the higher layer parameter reportConfigType and can be set to 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', or 'periodic'. For 'periodic' and 'semiPersistentOnPUCCH' / 'semiPersistentOnPUSCH' CSI reporting, the configured periodicity and slot offset applies in the numerology of the UL BWP in which the CSI report is configured to be transmitted on. The higher layer parameter reportQuantity indicates the CSI-related, L1 -RSRP-related, L1-SINR-related, Capabilitylndex-related or TDCP-related quantities to report. The reportFreqConfiguration indicates the reporting granularity in the frequency domain, including the CSI reporting band and if PMI / CQI reporting is wideband or sub-band. The timeRestrictionForChannelMeasurements parameter in CSI-ReportConfig can be configured to enable time domain restriction for channel measurements and timeRestrictionForlnterferenceMeasurements can be configured to enable time domain restriction for interference measurements.

[0122] The time domain behavior of [LTM-CSI-ReportConfig] is indicated by the higher layer parameter [reportConfigType] and can be set to 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', or 'periodic'. For 'periodic' and 'semiPersistentOnPUCCH' / 'semiPersistentOnPUSCH' CSI reporting, the configured periodicity and slot offset applies in the numerology of the UL BWP in which the CSI report is configured to be transmitted on.

[0123] Each CSI Resource Setting CSI-ResourceConfig contains a configuration of a list of S>1 CSI Resource Sets (given by higher layer parameter csi-RS-ResourceSetList), where the list is comprised of references to either or both of NZP CSI-RS resource set(s) and SS / PBCH block set(s) or the list is comprised of references to CSI-IM resource set(s). Each CSI Resource Setting is located in the DL BWP identified by the higher layer parameter BWP-id, and all CSI Resource Settings linked to a CSI Report Setting have the same DL BWP. Each LTM CSI Resource Setting [LTM-CSI-ResourceConfig] contains configuration of a [LTM-CSI-SSB-ResourceSef\ which comprises of a list of Z > 1 SS / PBCH blocks indices (given by [LTM-csi-SSB-ResourceList\) and a list of Z [PCI indices] (given by [LTM- Candidateld-list]) referring to cells associated with the SS / PBCH block indices. The UE determines the time domain behavior of a SS / PBCH block from ssb-Periodicity and ssb- PositionsInBurst and the frequency domain behavior of a SS / PBCH block is determined by the higher layer parameters subcarrierspacing, ssbFrequency.

[0124] Currently the L1 reporting framework (Beam Management, LTM) does not support event based reporting. In typical reporting mode the UE may send periodical L1 reports which consumes uplink resources. Event based triggering may be used to reduce the used uplink resources since UE can be configured to report information on need basis i.e. according to configured event thus the resources may not be configured to be available unless UE indicates that specific event has occurred.

[0125] An uplink resource (e.g. new PUCCH format, periodical availability) is configured that carries an uplink control information field, wherein the field carries an identifier associated with event based L1 -reporting

[0126] The uplink information field carries an indication of an identifier associated with the information to be reported.

[0127] The identifier is mapped to the reporting configuration ( the identifier in UCI is mapped to one event / condition configured in the L1 measurement reporting configuration) o The identifier is provided by the UE when one or more event(s) for reporting (e.g. CSI information ) is triggered (It can be provided for example in UCI or in a general UL resource)

[0128] The identifier can be provided in form of a bitmap i.e. the message format of the information conveyed in the UL resource is in form of a bitmap, each bitmap mapping to specific reporting event or,

[0129] The identifier can be provided in form of a codepoint values: i.e. the message format of the information conveyed in the UL resource is in form of a codepoint value, each codepoint value mapping to specific reporting event. The identifier indicated by the UE in an UL information field tells the network (NW) that UE indicates triggered report: either the UE provides the report in a predetermined (e.g. periodical) UL resource (reporting resource) or the network schedules the UL resource.

[0130] The event identifier indicated in the uplink information field is further mapped to an uplink reporting resource (PUSCH or PUCCH) that may be periodically available and used as reporting occasion based on the identifier (such as the event ID or event based report ID or a ID field mapping event based reporting configuration) in the uplink information field, or

[0131] The uplink resource reporting resource is the resource for transmitting the L1 measurement report after transmitting UCI. The UL reporting resource may be periodical and associated with the L1 measurement reporting event, thus the UE will use the associated periodical UL report resource to transmit the L1 measurement report for the triggered event.

[0132] The event identifier indicated in the uplink information field is associated with dynamically scheduled uplink grant configuration wherein the control channel scheduling the uplink grant indicates the event / configuration identifier for which the UL grant is scheduled in the same format as signaled in the UL information field.

[0133] The network schedules the UL resource and indicates / reflects the identifier provisioned by the UE in the UL information field

[0134] DCI indicates UE the scheduled UL grant is associated with the triggered event reported in UCI, then UE will use the schedule UL grant for transmitting the L1 measurement report for the triggered event. DCI indicates that for which of the triggered events indicated in the UCI the NW requests report.

[0135] In one embodiment an event based reporting configuration may contain an identifier (e.g., configuration identifier) to uniquely identify the report or reporting event

[0136] • event(s) / condition(s) which the UE is expected to track and upon the triggering of such event, the UE may send a report

[0137] Reference signals - which are considered for measurements to check whether the configured condition is met and then reported if the condition is met

[0138] In one embodiment, an uplink resource (e.g. new PUCCH format, periodical availability) is configured to carry an uplink information field which contains a bitmap wherein the one or more bitfields associate with specific reporting configuration identifier for event-based reporting. the event triggered reporting configuration identifiers are mapped to the bitfields in ascending order of the configuration identifiers. o first bitfield (most or least significant bit) is associated with the lowest configuration identifier that is configured for event based reporting, second bitfield is associated with the second lowest and so on. when a bit is set in the bitmap it indicates the network a specific event associated with specific reporting configuration identifier has been triggered. in one example, no event triggered can also be assigned a bitfield

[0139] In one embodiment, the uplink information field carries N-bit payload wherein the N bit information are codepoint values, each mapping to the specific event triggered reporting configuration identifiers. when event is triggered, the UE indicates the codepoint in the uplink information field first codepoint maps to the lowest configuration identifier for event based reporting, second codepoint in one example, no event triggered can also be assigned a codepoint the N, number of bits is determined based on the number of configured reporting configurations (e.g. 2 reporting configurations -> 1 bit value or 2 bit value if no event is also assigned a codepoint, 4 reporting configuration -> 2 bit value or 3 bit value if no event is also assigned a codepoint) In one embodiment, the event identifier value or reporting configuration identifier is associated with event based reporting, wherein: the uplink resource configured to carry the uplink information field may be periodically configured

[0140] The uplink information field is associated with: o an uplink resource reporting resource that may be periodically available and used as reporting occasion based on the indicated information in the uplink information field, or o dynamically scheduled / aperiodic reporting wherein the control channel scheduling the uplink grant indicates the event / configuration identifier for which the UL grant is scheduled

[0141] By transmitting the uplink information (event identifier) on the uplink resource, the UE indicates it will provide the report associated with reporting configuration with the identifier provided in the uplink information or expects DCI scheduling the UL resource allocation associated with indicated event.

[0142] In one embodiment, the reporting configuration may be configured with aperiodic or semi- persistent reporting., As an another example, the event based reporting configuration may be configured to be reported on scheduled UL resource. As an example, after the transmission of uplink information field indicating the uplink information (e.g. configuration identifier / event identifier) for an event based reporting, the UE monitors DCI carried by Physical Downlink Control Channel (PDCCH), wherein the DCI indicates the at least one of: resource allocation for the event triggered report (e.g, uplink resource for reporting the measurements) the at least one provisioned value of the uplink information field or associated with the uplink information field that identifies the indicated event / the reporting configuration associated with the indicated event.

[0143] FIG 9 illustrates an example similar to that illustrated in FIG 7. The description of FIG 7 also applies to FIG 9. In FIG 9, there is initial no event trigger after measurement 202. In this example, the user equipment 110 transmits an indication that there has been a L1 measurement 202 but does not indicate a triggered L1 measurement report event in message 251 . The message 251 uses L1 resource 252. This message 251 can, for example, be sent on L1 resource 207 which is the resource used to transmit the identifier 206.

[0144] The message 251 can, for example, be a N-bit UCI on PUCCH indicating no event. In some example cases the message 251 may not be transmitted (by the UE 110) to indicating no event (is triggered).

[0145] The identifier 206 can be a N-bit UCI on PUCCH indicating a specific event, e.g. event ID 1 . In on example, the value N may be determined based on the number of event-based reporting configurations or the value N maybe configured by the network.

[0146] The network, for example base station 120, determines whether an event is triggered based on the specific event indicated by the received message 251 . The network may not transmit the configuration message 220 (DCI) to schedule UL resource 209 for the measurement report 210 if the network determines that no event is triggered at the UE.

[0147] The UE may continue performing the measurement 202, and determine 204 if a L1 measurement 202 causes a triggered L1 measurement report event 205. The UE may determine to transmit an identifier 206 of the triggered L1 measurement report event 205 via a L1 resource 207.

[0148] The network, for example base station 120, determines whether the event identified by transmitted identifier 206 is associated with configured UL resource or whether UL grant is to be scheduled based on the identifier 206.

[0149] In this example, the network uses configuration message 220 (DCI) to schedule UL resource 209 for the measurement report 210. The configuration message 220 comprises the identifier 206.

[0150] The report 210 associated with the event 205 indicated by the DCI 220, is transmitted on the UL resource scheduled by the DCI 220. In one embodiment, the event based reporting is carried as MAC CE or PUSCH or PUCCH.

[0151] In one embodiment the event reporting configuration may be associated with a UL resource that is activated / can be used / is indicated to be used by the UE for measurement reporting upon transmitting the uplink information field.

[0152] -the UL resource may be specifically associated with one or more event based reporting configuration.

[0153] - when the event / reporting configuration is indicated by the uplink information field the specific event / reporting resource may be utilized for reporting of the event triggered measurements associated with that identifier).

[0154] In one embodiment the uplink resource carrying uplink information field for event based reporting indication may be a new PUCCH format.

[0155] In one example (non-limiting) the events for which the event triggered reporting may be configured may be signal quality measurement based: a) measured quality (e.g. RSRP / SINR) of a reference signal (or one or more) is worse than a configured threshold. b) measured quality (e.g. RSRP / SINR) of at least one reference signal, becomes / is a threshold value (e.g. offset) better than the a specific reference signal (e.g. reference signal corresponding to PDCCH ) c) Offset may be configurable (e.g. -3dB, 0, 3dB)measured quality (e.g. RSRP / SINR) of at least one reference signal is better than a configured threshold. d) measured quality (e.g. RSRP / SINR) of at least one reference signal is worse than a threshold 1 , and measured quality (e.g. RSRP / SINR) of at least one other reference signal is better than a threshold 2.

[0156] RS Reference Signal

[0157] MAC Medium Access Control LTM Lower Layer Triggered Mobility

[0158] BM Beam Management

[0159] CSI Channel State Information

[0160] UCI Uplink Control Information

[0161] RSRP Reference Signal Received Power

[0162] SINR Signal to Interference plus noise ratio

[0163] SSBRI SSB Resource Indicator

[0164] CRI CSI-RS Resource Indicator

[0165] FIG 10A illustrates an example of a method 500.

[0166] The method 500 comprises, at block 502, performing a layer one (L1 ) measurement;

[0167] The method 500 comprises, at block 504, determining if a L1 measurement report event is triggered;

[0168] The method 500 comprises, at block 506, determining to transmit an identifier of the triggered L1 measurement report event via a L1 resource. The method 500 comprises, at block 506, determining to transmit an event identifier / reporting configuration identifier associated with the triggered L1 measurement report event via a L1 resource.

[0169] The method 500 comprises, at block 508, determining to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0170] FIG 10B illustrates an example of a method 510.

[0171] The method 510 comprises, at block 512, configuring a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0172] The method 510 comprises, at block 504, receiving, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event. The method 510 comprises, at block 516, receiving, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

[0173] Fig 11 illustrates an example of a controller 400 suitable for use in an apparatus, for example a user equipment 110 or a base station 120. Implementation of a controller 400 may be as controller circuitry. The controller 400 may be implemented in hardware alone, have certain aspects in software including firmware alone or can be a combination of hardware and software (including firmware).

[0174] As illustrated in Fig 11 the controller 400 may be implemented using instructions that enable hardware functionality, for example, by using executable instructions 406 in a general-purpose or special-purpose processor 402 that may be stored on a machine readable storage medium (disk, memory etc.) to be executed by such a processor 402.

[0175] The processor 402 is configured to read from and write to the memory 404. The processor 402 may also comprise an output interface via which data and / or commands are output by the processor 402 and an input interface via which data and / or commands are input to the processor 402.

[0176] The memory 404 stores instructions, program, or code 406 that controls the operation of the apparatus when loaded into the processor 402. The computer program instructions, program or code am 406, provide the logic and routines that enables the apparatus to perform the methods illustrated in the accompanying FIGs. The processor 402 by reading the memory 404 is configured to load and execute the instructions, program, or code 406.

[0177] In at least some examples, a user equipment apparatus 110 comprises: at least one processor 402; and at least one memory 404 storing instructions that, when executed by the at least one processor 402, cause the apparatus at least to: perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; and determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0178] In at least some examples, a base station apparatus 120 comprises: at least one processor 402; and at least one memory 404 storing instructions that, when executed by the at least one processor 402, cause the apparatus at least to: configure a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; obtain, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; and obtain, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

[0179] As illustrated in Fig 12, the instructions, program, or code 406 may arrive at the apparatus via any suitable delivery mechanism 408. The delivery mechanism 408 may be, for example, a machine readable medium, a computer-readable medium, a non-transitory computer-readable storage medium, a computer program product, a memory device, a record medium such as a Compact Disc Read-Only Memory (CD-ROM) or a Digital Versatile Disc (DVD) or a solid-state memory, an article of manufacture that comprises or tangibly embodies the computer program 406. The delivery mechanism may be a signal configured to reliably transfer the computer program 406. The apparatus may propagate or transmit the computer program 406 as a computer data signal. The term “non-transitory” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal ) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM).

[0180] In at least some examples, computer program 406 comprises instructions for causing a user equipment apparatus 110 to perform at least the following or for performing at least the following: perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; and determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

[0181] In at least some examples, computer program 406 comprises instructions for causing a base station apparatus 120 to perform at least the following or for performing at least the following: configure a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; obtain, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; obtain, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event. The computer program instructions may be comprised in a computer program, a non- transitory computer readable medium, a computer program product, a machine readable medium. In some but not necessarily all examples, the computer program instructions may be distributed over more than one computer program.

[0182] Although the memory 404 is illustrated as a single component / circuitry it may be implemented as one or more separate components / circuitry some or all of which may be integrated / removable and / or may provide permanent / semi-permanent / dynamic / cached storage.

[0183] Although the processor 402 is illustrated as a single component / circuitry it may be implemented as one or more separate components / circuitry some or all of which may be integrated / removable. The processor 402 may be a single core or multi-core processor.

[0184] References to ‘computer-readable storage medium’, ‘computer program product’, ‘tangibly embodied computer program’ etc. or a ‘controller’, ‘computer’, ‘processor’ etc. should be understood to encompass not only computers having different architectures such as single / multi- processor architectures and sequential (Von Neumann) / parallel architectures but also specialized circuits such as field-programmable gate arrays (FPGA), application specific circuits (ASIC), signal processing devices and other processing circuitry. References to computer program, instructions, code etc. should be understood to encompass software for a programmable processor or firmware such as, for example, the programmable content of a hardware device whether instructions for a processor, or configuration settings for a fixed-function device, gate array or programmable logic device etc.

[0185] As used in this application, the term ‘circuitry’ may refer to one or more or all the following:

[0186] (a) hardware-only circuitry implementations (such as implementations in only analog and / or digital circuitry) and

[0187] (b) combinations of hardware circuits and software, such as (as applicable): i. a combination of analog and / or digital hardware circuit(s) with software / firmware and ii. any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory or memories that work together to cause an apparatus, such as a mobile phone or server, to perform various functions and

[0188] (c) hardware circuit(s) and or processor(s), such as a microprocessor(s) or a portion of a microprocessor(s), that requires software (for example, firmware) for operation, but the software may not be present when it is not needed for operation.

[0189] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the claim element, a baseband integrated circuit for a mobile device or a similar integrated circuit in a server, a cellular network device, or other computing or network device.

[0190] The blocks illustrated in the accompanying Figs may represent steps in a method and / or sections of code in the computer program 406. The illustration of a particular order to the blocks does not necessarily imply that there is a required or preferred order for the blocks and the order and arrangement of the block may be varied. Furthermore, it may be possible for some blocks to be omitted.

[0191] As used here ‘module’ refers to a unit or apparatus that excludes certain parts / components that would be added by an end manufacturer or a user. The apparatus can, for example be a module. A controller 400 of the apparatus can, for example be a module.

[0192] Where a structural feature has been described, it may be replaced by means for performing one or more of the functions of the structural feature whether that function or those functions are explicitly or implicitly described.

[0193] The above-described examples find application as enabling components of: automotive systems; telecommunication systems; electronic systems including consumer electronic products; distributed computing systems; media systems for generating or rendering media content including audio, visual and audio visual content and mixed, mediated, virtual and / or augmented reality; personal systems including personal health systems or personal fitness systems; navigation systems; user interfaces also known as human machine interfaces; networks including cellular, non-cellular, and optical networks; ad-hoc networks; the internet; the internet of things; virtualized networks; and related software and services.

[0194] The apparatus can be provided in an electronic device, for example, a mobile terminal, according to an example of the present disclosure. It should be understood, however, that a mobile terminal is merely illustrative of an electronic device that would benefit from examples of implementations of the present disclosure and, therefore, should not be taken to limit the scope of the present disclosure to the same. While in certain implementation examples, the apparatus can be provided in a mobile terminal, other types of electronic devices, such as, but not limited to: mobile communication devices, hand portable electronic devices, wearable computing devices, portable digital assistants (PDAs), pagers, mobile computers, desktop computers, televisions, gaming devices, laptop computers, cameras, video recorders, GPS devices and other types of electronic systems, can readily employ examples of the present disclosure. Furthermore, devices can readily employ examples of the present disclosure regardless of their intent to provide mobility.

[0195] The term ‘comprise’ is used in this document with an inclusive not an exclusive meaning. That is any reference to X comprising Y indicates that X may comprise only one Y or may comprise more than one Y. If it is intended to use ‘comprise’ with an exclusive meaning then it will be made clear in the context by referring to ‘comprising only one...’ or by using ‘consisting.’

[0196] In this description, the wording ‘connect’, ‘couple’ and ‘communication’ and their derivatives mean operationally connected / coupled / in communication. It should be appreciated that any number or combination of intervening components can exist (including no intervening components), i.e., to provide direct or indirect connection / coupling / communication. Any such intervening components can include hardware and / or software components.

[0197] As used herein, the term "determ ine / determining" (and grammatical variants thereof) can include, not least: calculating, computing, processing, deriving, measuring, investigating, identifying, looking up (for example, looking up in a table, a database, or another data structure), ascertaining and the like. Also, "determining" can include receiving (for example, receiving information), accessing (for example, accessing data in a memory), obtaining and the like. Also, " determine / determining" can include resolving, selecting, choosing, establishing, and the like.

[0198] In this description, reference has been made to various examples. The description of features or functions in relation to an example indicates that those features or functions are present in that example. The use of the term ‘example’ or ‘for example’ or ‘can’ or ‘may’ in the text denotes, whether explicitly stated or not, that such features or functions are present in at least the described example, whether described as an example or not, and that they can be, but are not necessarily, present in some of or all other examples. Thus ‘example’, ‘for example’, ‘can’, or ‘may’ refers to a particular instance in a class of examples. A property of the instance can be a property of only that instance or a property of the class or a property of a sub-class of the class that includes some but not all the instances in the class. It is therefore implicitly disclosed that a feature described with reference to one example but not with reference to another example, can where possible be used in that other example as part of a working combination but does not necessarily have to be used in that other example.

[0199] As used herein, “at least one of the following: ” and “at least one of ” and similar wording, where the list of two or more elements are joined by “and” or “or” mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.

[0200] Although examples have been described in the preceding paragraphs with reference to various examples, it should be appreciated that modifications to the examples given can be made without departing from the scope of the claims.

[0201] Features described in the preceding description may be used in combinations other than the combinations explicitly described above.

[0202] Although functions have been described with reference to certain features, those functions may be performable by other features whether described or not. The description of a feature, such as an apparatus or a component of an apparatus, configured to perform a function, or for performing a function, should additionally be considered to also disclose a method of performing that function. For example, description of an apparatus configured to perform one or more actions, or for performing one or more actions, should additionally be considered to disclose a method of performing those one or more actions with or without the apparatus.

[0203] Although features have been described with reference to certain examples, those features may also be present in other examples whether described or not.

[0204] The term ‘a’, ‘an’ or ‘the’ is used in this document with an inclusive not an exclusive meaning. That is any reference to X comprising a / an / the Y indicates that X may comprise only one Y or may comprise more than one Y unless the context clearly indicates the contrary. If it is intended to use ‘a’, ‘an’ or ‘the’ with an exclusive meaning then it will be made clear in the context. In some circumstances the use of ‘at least one’ or ‘one or more’ may be used to emphasis an inclusive meaning but the absence of these terms should not be taken to infer any exclusive meaning.

[0205] The presence of a feature (or combination of features) in a claim is a reference to that feature or (combination of features) itself and to features that achieve substantially the same technical effect (equivalent features). The equivalent features include, for example, features that are variants and achieve substantially the same result in substantially the same way. The equivalent features include, for example, features that perform substantially the same function, in substantially the same way to achieve substantially the same result.

[0206] In this description, reference has been made to various examples using adjectives or adjectival phrases to describe characteristics of the examples. Such a description of a characteristic in relation to an example indicates that the characteristic is present in some examples exactly as described and is present in other examples substantially as described.

[0207] The above description describes some examples of the present disclosure however those of ordinary skill in the art will be aware of possible alternative structures and method features which offer equivalent functionality to the specific examples of such structures and features described herein above and which for the sake of brevity and clarity have been omitted from the above description. Nonetheless, the above description should be read as implicitly including reference to such alternative structures and method features which provide equivalent functionality unless such alternative structures or method features are explicitly excluded in the above description of the examples of the present disclosure.

[0208] Whilst endeavoring in the foregoing specification to draw attention to those features believed to be of importance the Applicant may seek protection via the claims in respect of any patentable feature or combination of features hereinbefore referred to and / or shown in the drawings whether or not emphasis has been placed thereon.

Claims

l / we claim:1 . An apparatus comprising means for performing a layer one (L1 ) measurement; determining if a L1 measurement report event is triggered; transmit an identifier of the triggered L1 measurement report event via a L1 resource; transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

2. The apparatus as claimed in claim 1 , wherein the dependency of the uplink resource upon the triggered L1 measurement report event is preconfigured or dynamically configured by a network.

3. The apparatus as claimed in claim 1 or 2, wherein the identifier of the triggered L1 measurement report event and the L1 resource used for transmission of the identifier are preconfigured by a network.

4. The apparatus as claimed in claim 1 , 2 or 3, wherein the uplink resource dependent upon the triggered L1 measurement report event is a preconfigured resource selected by the apparatus.

5. The apparatus as claimed in any of claims 1 , 2 or 3, wherein the uplink resource dependent upon the triggered L1 measurement report event is a resource dynamically configured by a network.

6. The apparatus as claimed in any of claims 1 , 2 or 3, configured to transmit the event- triggered measurement report for the triggered L1 measurement report event via the uplink resource dependent upon the triggered L1 measurement report event using at least one of: a preconfigured uplink resource associated with the triggered L1 measurement report event, an uplink resource scheduled by the network in dependence upon the identifier of the triggered L1 measurement report event.

7. The apparatus as claimed in any preceding claim, configured to use a periodic resource for the L1 resource.

8. The apparatus as claimed in any preceding claim, wherein the L1 resource used for transmission of the identifier of the triggered L1 measurement report event is controlled to indicate the uplink resource, for transmission of the event-triggered measurement report, dependent upon the triggered L1 measurement report event.

9. The apparatus as claimed in any preceding claim, configured to use a shared resource for the L1 resource and the uplink resource.

10. The apparatus as claimed in any preceding claim, configured to use a periodic resource for the uplink resource.11 . The apparatus as claimed in claim 9, configured to use a reporting occasion for the uplink resource, wherein the reporting occasion is dependent upon the triggered L1 measurement report event.

12. The apparatus as claimed in any preceding claim, configured to determine if a L1 measurement report event is triggered based on one or more conditions and a result of the L1 measurement, the one or more conditions are associated with one or more L1 measurements.

13. The apparatus as claimed in any preceding claim, configured to determine if a L1 measurement report event is triggered by comparing a reception quality of one or more references signals to a threshold.

14. The apparatus as claimed in any preceding claim, wherein the identifier is at least one of:a bitmap comprising a series of multiple independent bits, wherein each independent bit maps to a L1 measurement report event and the value of the bit indicates a trigger-status of the L1 measurement report event or a codepoint comprising a combination of bits that maps, as a combination, to L1 measurement report event outcomes.

15. A method comprising: performing a layer one (L1 ) measurement; determining if a L1 measurement report event is triggered; determining to transmit an identifier of the triggered L1 measurement report event via a L1 resource; and determining to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

16. A computer program comprising instruction that when executed by one or more processors of an apparatus cause the apparatus to: perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; and determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event.

17. An apparatus comprising means for configuring a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource;determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; receiving, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; receiving, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

18. The apparatus as claimed in claim 17, wherein the dependency of the uplink resource upon the triggered L1 measurement report event is preconfigured by the apparatus before receiving the transmitted identifier or is dynamically configured by the apparatus based on the received transmitted identifier.

19. The apparatus as claimed in claim 17 or 18, comprising means for configuring, before receiving the transmitted identifier, the identifier of the triggered L1 measurement report event and the L1 resource used for transmission of the identifier.

20. The apparatus as claimed in claim 17, 18 or 19, comprising means for configuring a periodic resource for the L1 resource.21 . The apparatus as claimed in claim 17, 18 or 19, comprising means for configuring a shared resource for the L1 resource and the uplink resource dependent upon the triggered L1 measurement report event.

22. The apparatus as claimed in claim 17, 18 or 19, comprising means for configuring a periodic resource for the uplink resource.

23. The apparatus as claimed in claim 17, 18 or 19, comprising means for configuring a reporting occasion for the uplink resource dependent upon the triggered L1 measurement report event.

24. A method comprising:configuring a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; receiving, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; and receiving, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

25. A computer program comprising instruction that when executed by one or more processors of an apparatus cause the apparatus to: configure a user equipment to perform a layer one (L1 ) measurement; determine if a L1 measurement report event is triggered; determine to transmit an identifier of the triggered L1 measurement report event via a L1 resource; determine to transmit an event-triggered measurement report for the triggered L1 measurement report event via an uplink resource dependent upon the triggered L1 measurement report event; obtain, via the L1 resource, the transmitted identifier of the triggered L1 measurement report event; obtain, via the uplink resource dependent upon the triggered L1 measurement report event, the transmitted event-triggered measurement report for the triggered L1 measurement report event.

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