Antenna configuration

Abstract

The present disclosure relates to Ambient Internet of Things (AIoT) and more particularly to antenna configuration of reader devices or / and activator devices. A reader 100 or activator 200 transmits a

Description

TECHNOLOGICAL FIELD The present disclosure is related to but not limited to communication networks as defined by the 3GPP standard, such as the 5G and / or 6G standard. The disclosure particularly relates to Internet of Things, loT, in particular Ambient loT, AIoT, and more particularly to antenna configuration of apparatus involved in loT applications, in particular antenna configurations of reader devices and / or activator devices. The disclosure inter alia relates to re-configuration of antenna of such devices. BACKGROUND The number of loT connections has been growing rapidly in recent years and is predicted to be hundreds of billions by 2030. With more and more devices expected to be interconnected for improving production efficiency and increasing comforts of life, it demands further reduction of size, cost, and power consumption for loT devices. A critical issue with existing 3GPP technologies for the target use cases is the capability of energy harvesting considering limited device size. Cellular devices usually consume tens or even hundreds of milliwatts power for transceiver processing. Taking NB-IoT module for example, the typical current consumption for receive processing is about 60mA with supply voltage higher than 3.1V, while 70mA for transmitting processing at OdBm transmit power. Furthermore, the output power provided by typical RF energy harvester is mostly below 1 milliwatt, considering the small size of a few square centimeters for practical devices. Since the available RF power is far less than the consumed power, it is impractical to power cellular devices directly by energy harvesting in most cases. In a new approach, so called tags in the form of Ambient loT devices are used. An AIoT device may harness energy from a wireless signal called carrier wave [CW] it receives. The AIoT device may be both charged by the carrier wave and may further be activated (e.g., in a charged state) in order to reflect a signal (e.g., the carrier wave) while encoding at least one piece of information into the carrier wave, for instance at least an ID of the AIoT device. A typical system architecture around an AIoT device may consist of: 1) The tag device (e.g., the AIoT tag apparatus) which harnesses energy (e.g., over a range of frequencies, e.g., from a carrier wave) and listens for activation signals. Once activated, it may reflect and / or modulate the carrier wave in a predefined way. 2) An activator, i.e. a CW node, user equipment or network device, that provides the CW and may also send an activation signal targeted at waking up the AIoT device. Once both the AIoT device is charged by the activator’s CW and an activation signal is received from a activator, the AIoT device reflects the CW in a predefined way. 3) A reader, i.e. a user equipment or network device that listens and detects the reflected and / or modulated CW and for instance extracts information from it. The reader may or may not be collocated with the activator. SUMMARY OF SOME EXEMPLARY EMBODIMENTS It has been recognized that the interactions between the multiple devices (e.g., activator, reader and activator) are complex and varying over time. This is particularly the case, when some of these devices are changing their location over time and / or when moving obstacles may obscure radio communication paths. It has further been recognized, that at least some devices involved in an (A-)IoT session may support more than one RF-Front-End (RFFE) and / or antenna configuration. Which one of the different antenna configurations is best suited for a current (A-)IoT session, may be challenging to decide. For instance, there may be situations, where one device, for instance an activator, may attempt to activate multiple tag devices where a single antenna configuration of the activator device may not be suitable to activate all of the tag devices. Similarly, a reader device may be unable to receive responses from all of a plurality of (e.g., activated) tag devices with a single antenna configuration. It may be required, for instance within a (e.g., single) (A-)IoT session, to re-configure (e.g., amend at least one antenna configuration of) at least one involved apparatus (e.g., activator), for instance a reader device and / or an activator device. It has been recognized that finding an optimal antenna configuration for a given purpose, for instance for activating a particular tag device or for receiving responses from a particular tag device, may require extensive measuring of radio links between devices. Even if such measurements are carried out, they may quickly become outdated, for instance because of the changing radio environment, for instance because of at least one involved apparatus moving. It is thus inter alia an object of the present disclosure to improve (A-)IoT session success (e.g., successful activation and / or reading of tag devices) wherein at least one involved apparatus supports more than one antenna configuration. According to a first example aspect, a method is disclosed (e.g., performed and / or controlled by a first apparatus, e.g. a reader device)(e.g., during an AIoT session) comprising: providing (e.g., transmitting, e.g., by RRC) a configuration support message indicative of at least two supported (e.g., by the apparatus)(radio frequency front end (RFFE) / ) antenna configurations (e.g., for receiving a response from an AIoT device) to a network node; and obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, (e.g., Ambient loT, AIoT) session from the network node. This method may for instance be performed and / or controlled by an apparatus, for instance a server. Alternatively, this method may be performed and / or controlled by more than one apparatus, for instance a server cloud comprising at least two servers. Alternatively, the method may for instance be performed and / or controlled by an electronic device, e.g. a node in a communication system and / or by a terminal device, e.g., a user equipment [UE], For instance, the method may be performed and / or controlled by using at least one processor of the electronic device. According to a further example aspect, a computer program is disclosed, the computer program when executed by a processor causing an apparatus, for instance a server, a network node or a terminal device, e.g., a UE, to perform and / or control the actions ofthe method according to the first example aspect. The computer program may be stored on computer-readable storage medium, in particular a tangible and / or non-transitory medium. The computer readable storage medium could for example be a disk or a memory or the like. The computer program could be stored in the computer readable storage medium in the form of instructions encoding the computer-readable storage medium. The computer readable storage medium may be intended for taking part in the operation of a device, like an internal or external memory, for instance a Read-(e.g., Only] Memory [ROM] or hard disk of a computer, or be intended for distribution ofthe program, like an optical disc. According to a further example aspect, an apparatus is disclosed, configured to perform and / or control or comprising respective means for performing and / or controlling the method according to the first example aspect. The means of the apparatus can be implemented in hardware and / or software. They may comprise for instance at least one processor for executing computer program code for performing the required functions, at least one memory storing the program code, or both. Alternatively, they could comprise for instance circuitry that is designed to implement the required functions, for instance implemented in a chipset or a chip, like an integrated circuit. In general, the means may comprise for instance one or more processing means or processors. The above-disclosed apparatus according to any aspect may be a module or a component for a device, for example a chip. Alternatively, the disclosed apparatus according to any aspect may be a device, for instance a server or server cloud. The disclosed apparatus according to any aspect may comprise (e.g., only) the disclosed components, for instance means, processor, memory, or may further comprise one or more additional components. A terminal device, e.g., a user equipment (UE) may for instance correspond to a mobile device such as for example a mobile phone, tablet, smartwatch, a laptop, a Personal Digital Assistant (PDA) device, a wearable, an Intemet-of-Things (I0T) device, an HOT (Industrial I0T) device, a vehicle and / or combinations thereof. Such a user equipment may also be referred to as user device. A network node may correspond to a component of a communication network such as for instance a Base Transceiver Station (BTS), a nodeB, an evolved node B (eNB), a Next Generation NodeB (gNB), a distributed unit (DU), a central unit (CU) and / or combinations thereof. An apparatus performing and / or controlling the method according to the first example aspect may take the role of a reader device. For instance, a given apparatus may act as a reader device during a given AIoT session. The apparatus may take a different role (e.g., activator) in other AIoT sessions or additionally or alternatively even switch roles during a (e.g., single) AIoT session. A reader device may receive signals from at least one AIoT device (e.g., tag device). An apparatus performing and / or controlling the method according to the first example aspect may support at least two mutually different (e.g., receive) antenna configurations. Such antenna configurations may also be referred to as radio frequency front end (RFFE) configurations. The apparatus may comprise multiple (e.g. two, three, four or more) receive antennas. A receive antenna configuration may make use of one or a combination of these antennas, and may for instance correspond to a specific receive beamforming configuration. A given antenna (e.g., beamforming) configuration may comprise a filtering (e.g., of received signals on selected antennae) in time and / or phase, a weighting of (e.g., received signals at one or more) antennae and / or combinations thereof. A given antenna configuration may for instance cover (e.g., comprise (e.g., enhanced) sensitivity in) a certain spatial region surrounding the reader device and / or be receptive to a certain frequency range of radio signals. A given antenna configuration may be suited to receive signals from certain activated tag devices (tags). A tag may in particular be a node from a sensor network that is capable of performing a desired action such as gathering, processing and / or communicating information with other connected nodes in a network. The tag may in particular be an ambient loT tag. For instance, the tag may be part of an ecosystem of a large number of objects which are connected into a wireless sensor network using self-powered sensor nodes as tags. The tag may thus in particular be a tag performing energy harvesting. The tag may receive an activation signal and return a response signal based on an identifier (ID) of the tag. For instance, the tag may have limited / or no energy storage and use the activation signal energy to wake up and modulate the activation signal reflection with its ID, e.g. via on-off keying (switching between full reflection (e.g. bit 1) and matched antenna load (bit 0)). The tag may be in matched antenna load condition as default to enable energy harvesting. When the activation signal RF power level at the tag antenna is above a certain threshold, the tag may harvest energy, wake up and start modulating the reflection. As such the activation signal needs to be present for a certain period of time corresponding to the initial tag RF power charge time in addition to the response reflection time and expected propagation delay towards the reader. The tag may continue to harvest RF energy while modulating its response whenever it is in matched condition (bit 0). Thus an activation signal using a specific transmit antenna configuration preferably has a duration accommodating for tag wakeup, response duration and maximum propagation delays and likewise the readers have to be configured for aligned monitor windows. A modulated reflection of a tag may be referred to as a response. A given supported antenna configuration may be suited to receive radio signals (e.g., responses, i.e., backscattered reflections) from at least one activated tag. In some instances, at least one supported antenna configuration of the apparatus performing and / or controlling the first example method maybe suited to receive responses from a subset of activated tags (e.g., but not all). Different supported antenna configurations may differ in the (e.g., number and / or subsets of) activated tags they may (e.g., enable the apparatus to) receive. The method according to the first example aspect comprises providing a configuration support message to a network node. The configuration support message may be provided, e.g., transmitted, by a radio resource control, RRC, signaling. For instance, an apparatus performing and / or controlling the method according to the first example aspect may be connected to the network node by RRC (e.g., RRC idle, RRC inactive, and / or RRC connected). The configuration support message may indicate at least two or more antenna configurations supported by the apparatus performing and / or controlling the method according to the first example aspect For instance, the configuration support message may be configured to indicate that the apparatus performing and / or controlling the method according to the first example aspect supports more than one antenna configuration. The configuration support message may for instance be free of information on properties and / or number of the supported antenna configurations and e.g., may instead (e.g., merely) indicate that (e.g., in principle) more than one antenna configuration is supported, e.g., without indicating what antenna configurations are supported. Additionally or alternatively, the configuration support message may indicate a number of supported antenna configurations. Additionally or alternatively, the configuration support message may indicate at least one property of at least one (e.g., or of a subset of the or of all of the) supported antenna configuration, for instance a respective covered spatial area of the antenna configuration. By providing a configuration support message, the apparatus performing and / or controlling the method according to the first example aspect may enable the network node to reconfigure the apparatus for an improved AIoT performance, for instance to the end of receiving signals from a particularly large number of tags. The method according to the first example aspect further comprises obtaining a configuration selection message from the network node. The configuration selection message may be indicative of at least one antenna configuration. For instance, the configuration selection message may indicate at least one (e.g., or a single) of the supported antenna configuration indicated by the configuration support message. The network node may thus for instance select a specific antenna configuration and indicate this selected antenna configuration to the apparatus. Additionally or alternatively, the configuration selection message may be configured to indicate a desired change in antenna configuration. E.g., the configuration selection message may indicate that the apparatus performing and / or controlling the method according to the first example aspect should change its antenna configuration (e.g., use a different antenna configuration than currently used). In this case, the at least one antenna indicated by the configuration selection message may for instance correspond to an unspecific "other configuration". The configuration selection message may indicate the at least one selected antenna configuration for an Internet of Things, loT, in particular for an Ambient loT, AIoT, session. For instance, the method according to the first example aspect may at least partially or entirely be performed within an AIoT session. Additionally or alternatively, the method may be performed across more than one (e.g., two or more) AIoT sessions. An AIoT session may involve at least one activator device, at least one tag (device) and at least one reader device. An AIoT session may further comprise at least one carrier wave provider. The network node may for instance be connected to the at least one activator device and the at least one reader device (e.g., by RRC). The network node may manage the AIoT session, for instance by taking the role of a session control unit. For instance, within a given AIoT session a (e.g., pre-defined) subset of tags is supposed to be activated and / or read. For instance, the network node (e.g., according to the below-disclosed third aspect) may be configured to re-configure activator devices (e.g., according to the below-disclosed second aspect) and / or reader devices (e.g., the apparatus performing and / or controlling the method according to the first aspect) until a given subset (e.g., all) of the tags were activated and / or read and / or until a predefined number of re-configuration has been reached. According to an embodiment of the first example aspect, the method further comprises: selecting an antenna configuration based on the configuration selection message. For instance, the configuration selection message may indicate a specific supported antenna configuration. In this case, the apparatus may implement the indicated specific supported antenna configuration. Additionally or alternatively, the configuration selection message may be free of an indication of a specific supported antenna configuration and may instead indicate a change in antenna configuration (e.g., indicate a network-side selection of an unspecific different antenna configuration] or a desired reception and / or transmission characteristic to be achieved by an antenna configuration. In this case, the apparatus performing and / or controlling the method according to the first example aspect may select the antenna configuration itself, e.g., by implementing an antenna configuration that achieves a (e.g., the best possible] match to the desired reception and / or transmission characteristics and / or in a (pseudo-]random manner and / or in an iterating round-robin approach. According to an embodiment of the third example aspect, the selecting is done at least one of in a (e.g., pseudo] random manner or by iterating through the supported antenna configurations (e.g., round-robin]. According to an embodiment of the first example aspect, the method further comprises: re-configuring at least one antenna (e.g., of the apparatus] based on the configuration selection message; and providing (e.g., transmitting, e.g., by RRC] a re-configuration completion message indicative of a completion of the re-configuring to the network node (e.g., further indicative of a selected antenna configuration]. Re-configuring at least one antenna may for instance be part of applying an antenna configuration, in particular a (e.g., selected] antenna configuration, for instance, the (e.g., at least one] antenna configuration indicated by the configuration selection message. The apparatus performing and / or controlling the method according to the first example aspect may apply an antenna configuration based one (e.g, in response to obtaining] the configuration selection message. For instance, the apparatus performing and / or controlling the method according to the first example aspect may re-configure at least one antenna during an (e.g., ongoing] AIoT session. For instance, within an AIoT session at least two different antenna configurations may be used. By re-configuring at least one antenna, the apparatus performing and / or controlling the method according to the first example aspect may be enabled to receive tag responses from a particularly large number and / or from a spatially particularly wide-spread set of tags. The method may further comprise providing a re-configuration completion message to the network node. The re-configuration completion message may be indicative of re-configuring the at least one antenna (e.g., of applying a (e.g., new] antenna configuration]. The re-configuration completion message may be provided to the network node in response to and / or after completing the re-configuration of at least one antenna (e.g., after applying the antenna configuration]. The re-configuration completion message may for instance indicate a selected antenna configuration. For instance if the re-configuration selection message may leave open which antenna configuration to use, the apparatus may select an antenna configuration itself. In this case, the re-configuration completion message may indicate the selected antenna configuration. By providing the re-configuration completion message to the network node, the network node may be informed of a point in time from which on the re-configuration is complete. After this point in time, the reader may be enabled to receive responses from different tag devices compared to a configuration before the re-configuration, ft has been recognized that re-configuring (e.g., switching between configurations) may take different amounts of time depending on factors such as for instance a power supply of the apparatus, an antenna configuration from which the re-configuration starts and / or a connectivity between the apparatus and the network node. The network node may not be able to predict (e.g., precisely) how long the re-configuration will take. The re-configuration complete message removes this uncertainty and thus enables the network node to allocate resources for activation and reading of tags as soon as re-configuration is complete. According to an embodiment of the first example aspect, the method further comprises: obtaining (e.g., receiving, e.g., by RRC) a configuration-based allocation message indicative of at least one configuration-based allocated radio resource for the loT (e.g., AIoT) session from the network node, wherein the at least one configuration-based allocated radio resource is at least partially based on the at least one selected antenna configuration (e.g., in response to providing the re-configuration completion message). A configuration-based allocation message may indicate allocated (e.g., radio) resources (e.g., in time and / or frequency) to be used by the apparatus performing and / or controlling the method according to the first example aspect in an upcoming AIoT activation and / or reading. The radio resources may at least partially be based on the (e.g., at least one) selected antenna configuration. Alternatively, the radio resources may be independent of the (e.g., at least one) selected antenna configuration. According to an embodiment of the first example aspect, the method further comprises: (e.g., prior to obtaining the configuration selection message) obtaining (e.g., receiving, e.g., by RRC) a default allocation message indicative of at least one default allocated radio resource (e.g., for receiving a response from an loT or AIoT device) (e.g., without receiving an indication of a configuration and / or configuring an antenna) for an initial loT (e.g., AIoT) session from the network node (e.g., wherein the at least one default allocated radio resource is obtained before a reconfiguration of an (e.g., any) antenna configuration and / or is based on an initial antenna configuration). The method according to the first example aspect may further comprise obtaining a default allocation message. The default allocation message may be obtained prior to obtaining the configuration selection message. The default allocation message may be obtained prior (e.g., any) re-configurating of (e.g., any) antenna. The allocation message may be indicative of at least one (e.g., one) default allocated radio resource. The default allocated radio resource may for instance be based on an initialization of the apparatus, for instance by the network node, for instance at a start of the AIoT session. The default allocated radio resource may for instance be based on an initial antenna configuration. The default allocated radio resource may be independent (e.g., chosen (e.g., by the network node) independently) from an antenna configuration. E.g., the network node may be agnostic to an antenna configuration applied by the apparatus performing and / or controlling the first example aspect when selecting the default allocated radio resource. According to an embodiment of the first example aspect, the method further comprises: determining whether an (e.g., any or a specific, e.g., an expected) loT (e.g., AIoT) response is received (e.g., within a predefined time span after obtaining the default allocation message and / or the configuration-dependent allocation message) via the at least one default or the at least one configuration-based allocated radio resource; and means for, if it is determined that the loT (e.g., AIoT) response has not been received (e.g., no loT or AIoT response has been received), providing (e.g., transmitting, e.g., by RRC) a no-signal message, indicating that the loT (e.g., AIoT) response has not been received, to the network node. The method may comprise attempting to receive at least one loT (e.g., AIoT) response within a predefined time span, e.g., after obtaining the default allocation message and / or the configuration-dependent allocation message. For instance, the predefined time span may be at least or at most Ips, lOps, lOOps, 1ms, 2ms, 5ms, 10ms, 20ms, 50ms, or 100ms. The pre-defined time span may be obtained (e.g., from the network node) and / or may be pre-configured at the apparatus performing and / or controlling the method according to the first example aspect. A no-signal message may be provided to the network node if (e.g., within the predefined time span) at least one of no (A)IoT response is received or a number of AIoT responses is received that deviates from an expected number or (A)IoT responses. For instance, an expected number of (A)IoT responses may be obtained (e.g., from the network node), may be (e.g., determined) based on previously received (A)loT responses and / or may be a predefined (e.g., minimum) number of (A)loT responses. By providing the no-signal message, the apparatus performing and / or controlling the method according to the first example aspect may inform the network node about an unsuccessful AIoT tag activation and / or reading. According to an embodiment, the no-signal message may (e.g., instead of indicating that one or more AIoT responses have not been received] indicate received responses from tags (e.g., as a list of tag IDs], The network node may subsequently determine whether (e.g., all] expected tag responses may have been received or whether response are missing (e.g., due to unsuccessful activation and / or unsuccessful reading]. According to an embodiment of the first example aspect, at least one of the apparatus is a reader device; or the network node comprises a session control unit, SCU. A session control unit may for instance correspond to a functional unit with a network node that manages at least one or more (A]IoT sessions. It may allocate resources, initialize devices (e.g., reader and / or activator] and may request re-configurations and oversee AloT activation and / or reading successes and / or failures. According to an embodiment of the first example aspect, at least one of: the default allocation message is obtained in response to (e.g., after] providing the configuration support message; or the configuration selection message is obtained in response to providing the no-signal message. The default allocation message may be obtained after or before providing the configuration support message. For instance, the network node may initialize the apparatus performing and / or controlling the method according to the first example aspect and may then provide the default allocation message. For instance, the default allocation message may be obtained by the apparatus irrespective of whether it supported more than one antenna configuration or not. Additionally or alternatively, the default allocation message may be obtained after providing the configuration support message. In this case, the default allocation message may be independent from or at least partially depend on the at least one supported antenna configuration indicated by the configuration support message. The configuration selection message may for instance be obtained in response to providing the no-signal message. The network node may determine, e.g., based on (e.g., an obtaining of and / or on the content of] the no-signal message, that re-configuration of at least one antenna of the apparatus performing and / or controlling the method according to the first example aspect may be required. For such a re-configuration, the configuration selection message may be provided by the network node and subsequently obtained by the apparatus. According to an embodiment of the first example aspect, at least one of: the configuration support message is indicative of at least 3,4, 5, 6,7,8,16, 32, 64 or more supported antenna configurations; a supported antenna configuration is indicative of at least one of a (e.g., beamformed) receptive field of at least one or more antenna; one or a subset of antennas to be used; at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; or a frequency of a local oscillator; the configuration selection message is indicative of a change (e.g., a random variation) of antenna configuration (e.g., a change from a current antenna configuration to another supported antenna configuration); or at least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT (e.g., AloT) response or activating an loT (e.g., AloT) device. For instance, the configuration support message may indicate a plurality of antenna configurations. An antenna configuration may comprise information about which antennae to use, filter coefficients and / or local oscillator settings. Additionally or alternatively, an antenna configuration (e.g., as indicated by the configuration support message or by the configuration selection message) may indicate desired reception and / or transmission properties such as for instance, a spatial area to cover (e.g., without specifying the specifics of how to achieve such reception and / or transmission properties). The apparatus performing and / or controlling the method according to the first aspect may use the antenna configuration indicated to configure its antennae. For instance, the apparatus may configure its antennae according to the information (e.g., which antennae, filter coefficients, etc.) and / or may configure its antennae in order to achieve a desired reception and / or transmission properties. The configuration selection message may (e.g., instead of indicating a specific configuration and / or desired transmission and / or reception properties) indicate a change of antenna configuration. For instance, the network node may (e.g., merely) indicate that another antenna configuration is desired than currently used. The configuration selection message may thus be configured to cause a change from a currently active antenna configuration to another, different antenna configuration. The configuration selection message may thus be free of an indication of a specific antenna configuration and instead indicate an unspecific, different antenna configuration. For instance, the configuration selection message may indicate and / or be configured to cause a (pseudo-)random variation in antenna configuration and / or a variation in a round-robin sequence through available antenna configurations. According to a second example aspect, a method is disclosed (e.g., performed and / or controlled by a second apparatus, e.g. an activator device) comprising: providing (e.g., transmitting, e.g., by RRC) a configuration support message indicative of at least two supported (e.g., by the apparatus) (radio frequency front end (RFFE) / ) antenna configurations (e.g., for activating an loT or AloT device) to a network node; and obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, (e.g., AIoT] session from the network node. This method may for instance be performed and / or controlled by an apparatus, for instance a server. Alternatively, this method may be performed and / or controlled by more than one apparatus, for instance a server cloud comprising at least two servers. Alternatively, the method may for instance be performed and / or controlled by an electronic device, e.g. a node in a communication system and / or by a terminal device, e.g., a user equipment [UE], For instance, the method may be performed and / or controlled by using at least one processor of the electronic device. According to a further example aspect, a computer program is disclosed, the computer program when executed by a processor causing an apparatus, for instance a server, a network node or a terminal device, e.g., a UE, to perform and / or control the actions of the method according to the second example aspect. The computer program may be stored on computer-readable storage medium, in particular a tangible and / or non-transitory medium. The computer readable storage medium could for example be a disk or a memory or the like. The computer program could be stored in the computer readable storage medium in the form of instructions encoding the computer-readable storage medium. The computer readable storage medium may be intended for taking part in the operation of a device, like an internal or external memory, for instance a Read-(e.g., Only] Memory [ROM] or hard disk of a computer, or be intended for distribution of the program, like an optical disc. According to a further example aspect, an apparatus is disclosed, configured to perform and / or control or comprising respective means for performing and / or controlling the method according to the second example aspect. The means of the apparatus can be implemented in hardware and / or software. They may comprise for instance at least one processor for executing computer program code for performing the required functions, at least one memory storing the program code, or both. Alternatively, they could comprise for instance circuitry that is designed to implement the required functions, for instance implemented in a chipset or a chip, like an integrated circuit. In general, the means may comprise for instance one or more processing means or processors. The above-disclosed apparatus according to any aspect may be a module or a component for a device, for example a chip. Alternatively, the disclosed apparatus according to any aspect may be a device, for instance a server or server cloud. The disclosed apparatus according to any aspect may comprise (e.g., only] the disclosed components, for instance means, processor, memory, or may further comprise one or more additional components. Features disclosed with respect to the first example aspect are disclosed with respect to the second example aspect as well, where applicable. An apparatus performing and / or controlling the method according to the second example aspect may take the role of an activator device. For instance, a given apparatus may act as an activator device during a given AIoT session. The apparatus may take a different role (e.g., reader) in other AIoT sessions or additionally or alternatively even switch roles during a (e.g., single) AIoT session. An activator device may provide (e.g., transmit) signals to at least one AIoT device (e.g., tag device). An apparatus performing and / or controlling the method according to the second example aspect may support at least two mutually different (e.g., transmit) antenna configurations. Features disclosed with respect to the reader apparatus of the first example aspect regarding receiving signals from an AIoT device (e.g., tag device) through antennae are herewith disclosed for the apparatus performing and / or controlling the method according to the second example aspect regarding transmitting of activation signals to an AIoT device (e.g., tag device). E.g., a spatial area of enhanced sensitivity may correspond to a spatial area of enhanced transmission signal strength. Accordingly, a given supported antenna configuration may be suited to transmit radio signals (e.g., activation signals) to at least one activated tag. In some instances, at least one supported antenna configuration of the apparatus performing and / or controlling the second example method may be suited to transmit responses to a subset of activated tags (e.g., but not all). Different supported antenna configurations may differ in the (e.g., number and / or subsets of) tags they may (e.g., enable the apparatus to) activate. According to an embodiment of the second example aspect, the method further comprises: selecting an antenna configuration based on the configuration selection message. According to an embodiment of the third example aspect, the selecting is done at least one of in a (e.g., pseudo) random manner or by iterating through the supported antenna configurations (e.g., round-robin). According to an embodiment of the second example aspect, the method further comprises: re-configuring at least one antenna (e.g., of the apparatus) based on the configuration selection message; and providing a re-configuration completion message indicative of a completion of the re-configuring to the network node (e.g., further indicative of a selected antenna configuration). By re-configuring at least one antenna, the apparatus performing and / or controlling the method according to the first example aspect may be enabled to receive tag responses from a particularly large number and / or from a spatially particularly wide-spread set of tags. According to an embodiment of the second example aspect, the method further comprises: obtaining a configuration-based allocation message indicative of at least one configuration-based allocated radio resource for an ioT (e.g., AioT] session from the network node, wherein the at least one configuration-based allocated radio resource is at least partially based on the at least one selected antenna configuration (e.g., in response to providing the re-configuration completion message]. According to an embodiment of the second example aspect, the method further comprises: (e.g., prior to obtaining the configuration selection message] obtaining a default allocation message indicative of at least one default allocated radio resource (e.g., for receiving a response from an IoT or AioT device] (e.g., without receiving an indication of a configuration and / or configuring an antenna] for an initial IoT (e.g., AioT] session from the network node (e.g., wherein the at least one default allocated radio resource is obtained before a re-configuration of an (e.g., any] antenna configuration and / or is based on an initial antenna configuration].. According to an embodiment of the second example aspect, at least one of the apparatus is an activator device; or the network node comprises a session control unit, SCU. According to an embodiment of the second example aspect, the default allocation message is obtained in response to (e.g., after] providing the configuration support message. According to an embodiment of the second example aspect, at least one of: the configuration support message is indicative of at least 3,4, 5, 6,7,8,16, 32, 64 or more supported antenna configurations; a supported antenna configuration is indicative of at least one of a (e.g., beamformed] receptive field of at least one or more antenna; one or a subset of antennas to be used; at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; or a frequency of a local oscillator; the configuration selection message is indicative of a change (e.g., a random variation] of antenna configuration (e.g., a change from a current antenna configuration to another supported antenna configuration]; or at least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an IoT (e.g., AioT] response or activating an IoT (e.g., AioT] device. According to a third example aspect, a method is disclosed (e.g., performed and / or controlled by a third apparatus, e.g., a network node, e.g., comprising an SCU) comprising: obtaining (e.g., receiving, e.g., by RRC) a configuration support message indicative of at least two supported (e.g., by the second apparatus)(radio frequency front end (RFFE) / ) antenna configurations (e.g., for receiving a response from and / or for activating an loT or AIoT device) from a second apparatus (e.g., performing and / or controlling the method according to the first or the second example aspect); selecting one antenna configuration from the at least two supported antenna configurations; and providing a configuration selection message indicative of the one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, (e.g., AIoT) session to the second apparatus. This method may for instance be performed and / or controlled by an apparatus, for instance a server. Alternatively, this method may be performed and / or controlled by more than one apparatus, for instance a server cloud comprising at least two servers. Alternatively, the method may for instance be performed and / or controlled by an electronic device, e.g. a node in a communication system and / or by a terminal device, e.g., a user equipment (UE). For instance, the method may be performed and / or controlled by using at least one processor of the electronic device. According to a further example aspect, a computer program is disclosed, the computer program when executed by a processor causing an apparatus, for instance a server, a network node or a terminal device, e.g., a UE, to perform and / or control the actions of the method according to the third example aspect. The computer program may be stored on computer-readable storage medium, in particular a tangible and / or non-transitory medium. The computer readable storage medium could for example be a disk or a memory or the like. The computer program could be stored in the computer readable storage medium in the form of instructions encoding the computer-readable storage medium. The computer readable storage medium may be intended for taking part in the operation of a device, like an internal or external memory, for instance a Read-(e.g., Only) Memory (ROM) or hard disk of a computer, or be intended for distribution of the program, like an optical disc. According to a further example aspect, an apparatus is disclosed, configured to perform and / or control or comprising respective means for performing and / or controlling the method according to the third example aspect. The means of the apparatus can be implemented in hardware and / or software. They may comprise for instance at least one processor for executing computer program code for performing the required functions, at least one memory storing the program code, or both. Alternatively, they could comprise for instance circuitry that is designed to implement the required functions, for instance implemented in a chipset or a chip, like an integrated circuit. In general, the means may comprise for instance one or more processing means or processors. The above-disclosed apparatus according to any aspect may be a module or a component for a device, for example a chip. Alternatively, the disclosed apparatus according to any aspect may be a device, for instance a server or server cloud. The disclosed apparatus according to any aspect may comprise (e.g., only] the disclosed components, for instance means, processor, memory, or may further comprise one or more additional components. Features disclosed with respect to the first and second example aspect are herewith disclosed for the third example aspect as well, where applicable. By obtaining a configuration support message from a second apparatus (e.g., a reader or activator device), the apparatus performing and / or controlling the method according to the third aspect may be informed that the second apparatus supports multiple antenna configurations and / or about which the configurations are supported by the second apparatus. Based on this information it may decide to reconfigure the second apparatus. The method according to the third aspect comprises selecting one antenna configuration for the at least two supported antenna configurations. For instance, the selecting may comprise evaluating whether an activation or a reading of a tag device and / or of a subset of tag devices has been successful based on a previous antenna configuration of the second apparatus. Such evaluation may at least partially based on obtaining a no-signal message from the second apparatus indicating that at least some tag responses have not been received by the second apparatus. The apparatus performing and / or controlling the method according to the third example aspect may select an (e.g., one specific) antenna configuration from the antenna configurations supported by the second apparatus that may enable an activation and / or reading of tag devices previously not read and / or activated. The configuration selection message may in this case indicate the selected (e.g., specific) antenna configuration and the second apparatus may implement the selected (e.g., specific) antenna configuration. Additionally or alternatively, selecting may involve determining that a different antenna configuration than previously used may be required yet may be free of a determination of a specific configuration. Selecting at least one supported antenna configuration may thus (e.g., only) extend to selecting another antenna configuration. In this case the configuration selection message may indicate a change in antenna configuration to the second apparatus. The second apparatus may the select a specific antenna configuration. According to an embodiment of the third example aspect, the method further comprises: obtaining a re-configuration completion message indicative of a completion of an antenna reconfiguring from the second apparatus (e.g., further indicative of a selected antenna configuration). By obtaining the re-configuration completion message, the apparatus performing and / or controlling the method according to the third example aspect is informed that the second apparatus is ready to obtain activate a tag and / or receive responses from a tag and thus to obtain resource allocation information. According to an embodiment of the third example aspect, the method further comprises: providing (e.g., transmitting, e.g., by RRC) an configuration-based allocation message indicative of at least one configuration-based allocated radio resource for the loT (e.g., AloT) session to the second apparatus, wherein the at least one configuration-based allocated radio resource is at least partially based on the selected antenna configuration (e.g., in response to determining that the loT or AloT activation was unsuccessful and / or that the loT or AloT response has not been received and / or in response to receiving the no-signal message and / or in response to obtaining the re-configuration complete message). According to an embodiment of the third example aspect, the method further comprises: (e.g., prior to providing the configuration selection message) providing (e.g., transmitting, e.g., by RRC) a default allocation message indicative of at least one default allocated radio resource (e.g., for receiving a response from and / or for activating an loT or AloT device)(e.g., prior to providing any indication of a configuration and / or configuring an antenna) for an initial loT (e.g., AloT) session to the second apparatus (e.g., wherein the at least one default allocated radio resource is obtained before a re-configuration of an (e.g., any) antenna configuration and / or is based on an initial antenna configuration).. According to an embodiment of the third example aspect, the method further comprises: determining whether at least one of an loT (e.g., AloT) response (e.g., a set of expected loT or AloT responses, e.g., based on the default or configuration-based allocated resource) has been received or whether an loT (e.g., AloT) device has been activated (e.g., within a predefined time span after obtaining the first allocation message) via the at least one default or the at least one configurationbased allocated radio resource. The determining may be based on obtaining a no-signal message from the second apparatus. Additionally or alternatively, the determining may involve not obtaining a no-signal message within a predefined time span, e.g., within least or at most Ips, lOps, lOOps, 1ms, 2ms, 5ms, 10ms, 20ms, 50ms, or 100ms. According to an embodiment of the third example aspect, the method further comprises: means of repeating (e.g., until it is determined that the loT or AIoT response has been received and / or that the loT or AIoT device has been activated and / or a predefined number of (e.g., all of) the supported antenna configurations have been used, e.g., in the current AIoT session) selecting one supported antenna configuration; providing a configuration selection message indicative of the one selected antenna configuration; and providing a configuration-based allocation message indicative of at least one configurationbased allocated radio resource for an loT or AIoT session, wherein the at least one configuration-based allocated radio resource is at least partially based on the selected antenna configuration. By repeating the steps, the method according to the third example aspect may iteratively configure a second apparatus with different antenna configurations and thus increase chances of a successful tag activation and read-out The iterative approach may not require an elaborate selection procedure of an ideal or even well-suited antenna configuration. Instead, for instance, even a simple trial and error approach may be implemented by which different antenna configurations are (e.g., randomly or iteratively selected and) attempted and, if no satisfactory success (i.e., activation of tag devices and / or reception of responses from tag devices) is achieved, another antenna configuration is selected. As a consequence, a low-complexity approach is proposed which is adapted to (e.g., often unpredictable) changes in the radio environment. According to an embodiment of the third example aspect, at least one of the second apparatus is an activator; the second apparatus is a reader; or the apparatus comprises a session control unit, SCU. According to an embodiment of the third example aspect, the selecting is done at least one of in a (e.g., pseudo) random manner or by iterating through the supported antenna configurations (e.g., round-robin). According to an embodiment of the third example aspect, the determining comprises receiving (e.g., or not receiving within a predefined time span) a no-signal message, indicating that no loT (e.g., AIoT) response has been received, from the second apparatus. According to an embodiment of the third example aspect, at least one of: the default allocation message is provided in response to (e.g., after) obtaining the configuration support message; or the configuration selection message is provided based on the determining whether at least one of an loT (e.g., AIoT) response has been received or an loT (e.g., AIoT) device has been activated (e.g., in response to determining that a response been received or an activation has not been successful; e.g., in response to obtaining a no-signal message from the second apparatus). According to an embodiment of the third example aspect, at least one of: the configuration support message is indicative of at least 3,4, 5, 6,7,8,16, 32, 64 or more supported antenna configurations; a supported antenna configuration is indicative of at least one of a (e.g., beamformed) receptive field of at least one or more antenna; one or a subset of antennas to be used; at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; or a frequency of a local oscillator; the configuration selection message is indicative of a change (e.g., a random variation) of antenna configuration (e.g., a change from a current antenna configuration to another supported antenna configuration); or at least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT (e.g., AIoT) response or activating an loT (e.g., AIoT) device. According to a fourth example aspect, a method is disclosed (e.g., performed and / or controlled by a system comprising a reader device, an activator device and / or a network node), comprising by a first apparatus (e.g., reader device), comprising providing (e.g., transmitting, e.g., by RRC) a configuration support message indicative of at least two supported (e.g., by the apparatus) (radio frequency front end (RFFE) / ) antenna configurations (e.g., for receiving a response from an AIoT device) to a network node; and obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, (e.g., Ambient loT, AIoT) session from the network node; and by a second apparatus (e.g., activator device), comprising providing (e.g., transmitting, e.g., by RRC) a configuration support message indicative of at least two supported (e.g., by the apparatus) (radio frequency front end (RFFE) / ) antenna configurations (e.g., for activating an loT or AIoT device) to the network node; and obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, (e.g., AIoT) session from the network node; and by a third apparatus (e.g., network node, e.g., comprising an SCU), comprising obtaining (e.g., receiving, e.g., by RRC) a configuration support message indicative of at least two supported (e.g., by the second apparatus) (radio frequency front end (RFFE) / ) antenna configurations (e.g., for receiving a response from and / or for activating an loT or AIoT device) from the first or the second apparatus; selecting one antenna configuration from the at least two supported antenna configurations; and providing a configuration selection message indicative of the one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, (e.g., AloT) session to the first or the second apparatus. Any providing and obtaining disclosed in the first, second, third and fourth example aspect may for instance be implemented by an uplink scheduling request, UL SR, a Medium Access Control Control Element, MAC CE, a Radio Resource Control, RRC, signaling,, or a Non Access Stratum, NAS, signaling or combinations thereof. Features disclosed with respect to the first, second and third example aspect are herewith disclosed for the fourth example aspect as well, where applicable. BRIEF DESCRIPTION OF THE FIGURES Fig. la,b show schematic diagrams illustrating example radio environments in which example embodiments of the present disclosure may be performed; Fig. 2a,b shows an signaling diagram in which example aspects of the disclosure are illustrated; Fig. 3 shows a flow chart illustrating an embodiment according to the first example aspect of the disclosure; Fig. 4 shows a flow chart illustrating an embodiment according to the second example aspect of the disclosure; Fig. 5 shows a flow chart illustrating an embodiment according to the third example aspect of the disclosure; Fig. 6 shows a block diagram illustrating an embodiment according to the first example aspect of the disclosure; Fig. 7 shows a block diagram illustrating an embodiment according to the second example aspect of the disclosure; Fig. 8 shows a block diagram illustrating an embodiment according to the third example aspect of the disclosure; Fig. 9 shows a schematic illustration of examples of tangible and non-transitory computer- readable storage media. DETAILED DESCRIPTION OF THE FIGURES The following description serves to deepen the understanding of the present disclosure and shall be understood to complement and be read together with the description of example embodiments of the present disclosure as provided in the above SUMMARY section of this specification. Fig. la and lb show connectivity topologies for Ambient loT networks and devices. In both of these topologies, the Ambient loT device 400 may be provided with a carrier wave from other node(s) either inside or outside the topology. The links in each topology may be bidirectional or unidirectional. A network node, or base station, BS, 300, a user equipment, UE, an assisting node, or intermediate node could be multiple BSs or UEs, respectively. The mixture of indoor and outdoor placement of such nodes may be regarded as a network implementation choice. In a first topology (shown in Fig. 1), the Ambient loT device may directly and bidirectionally communicate with a base station 300. The communication between the base station 300 and the ambient loT device 400 may include Ambient loT data and / or signalling. This topology includes the possibility that the BS 300 transmitting to the Ambient loT device 400 is a different from the BS 300 receiving from the Ambient loT device 400. In a second topology 2 (shown in Fig. 2), the Ambient loT device 400 communicates bidirectionally with an intermediate node between the device 400 and base station 300. In this topology, the intermediate node can be a relay, IAB node, UE, repeater, etc. which is capable of Ambient loT. The intermediate node transfers the information between BS 300 and the Ambient loT device 400. This topology includes the possibility that the intermediate node between the device 400 and base station 300 transmitting to the Ambient loT device 400 is a different from the intermediate node between the device 400 and base station 300 receiving from the Ambient loT device 400. It has been recognized that having an A-IoT session deployed in a dynamic environment with moving and / or rotating activators and readers may call for a particularly fast (e.g., reader and / or activator) device RFFE / antenna re-configuration. This holds in particular in comparison to static and / or semi-static cases. A maximum allowed (e.g., UE) re-configuration time may for some applications (e.g., Carrier Aggregation, CA) be a few milliseconds. CA may require a full re-configuration of the RFFE / Antenna of under 5 ms (e.g., for Frequency range 1, FR1). Many mobile activators or readers may be capable of re-configuring their RFFE / Antennas much faster than that. However, the actual re-configuration speed is not known by a given session control unit, SCU. The SCU may subsequently wait at least 5 ms for a respective re-configuration. A re-configuration of an RFFE in a UE, e.g., in a smartphone, may be a complicated process, for instance because a smartphone can have 10s of thousands different RF configurations to support world-wide operators and CA combinations. The time required for a re-configuration of the RFFE / Antenna is dynamic and will depend one or more of the following: The power supply of the smartphone will determine how fast it can raise the power from a digital 0 to a digital 1 in order to re-program the active components in the RFFE. An RF switch can switch within a few ns, but the power supply might need several 100 ps of output settling prior to actual re-programming of such a switch. The RFFE / antenna configuration the smartphone is switching from. Some configuration switches will be faster than others. Other active carriers: the activator and reader may require to be RRC connected to a gNB (e.g., comprising the SCU) via the UE-RAN radio interface, UU, interface. (The SCU might not know the configuration of the UU connection) Specific considerations for Activator and Reader re-configuration may apply. Regarding an activator reconfiguration: An RFFE / Antenna re-configuration for the activation signal at a UE, e.g., a smartphone, might not be straight forward, as the smartphone may be required to maintain its RRC connection to the gNB. As such, reconfiguration of the RFFE / Antenna used for the activation signal will have different degrees of freedom dependent on, inter alia, whether the UU connection and the activation signal are in different band groups (LB, MHB, UHB); a high flexibility as the UE can use two different power amplifiers, PAs, for such a scenario (one PA supporting the band group for the UU connection and a different PA supporting the band group for the A-IoT activation). However, the two transmitted signals may not be able to be routed to the same antenna, e.g., due to a risk of spurious emission generated in the antenna tuners. The UU connection and the A-IoT activation are within the same band group. Both signals may be generated by the same PA and may share the same antenna. If the UU connection is time division duplex, TDD, or frequency division duplex, FDD, this will also affect the possible combinations and reconfiguration times. Reader re-configuration: In some cases, reader re-configuration may be omittable as the reader may be capable of receiving the Ambient loT device (Tag) reply simultaneously on its (e.g., all) RF receiver chains. However, one or more of the receiver chains may be configured for the RRC connection to one or more gNBs (multi-Rx connections). Therefore not all of the receiver chains may be directly available for the A-loT session, without a re-configuration of the RFFE. It is thus one of the objects of the present disclosure to utilize the multiple Tx and Rx RFFE / Antenna configurations of a UE, e.g., smartphone, in particular when operating in a dynamic environment An SCU may be enabled to request an RFFE / antenna re-configuration and may subsequently be informed when such a re-configuration is finalized. By this, it may be avoided that the next A-IoT activation session is performed with the same RFFE / antenna configuration at the UE, e.g., smartphone, or that the UE, e.g., smartphone, is in the process of re-configuring its RFFE / Antenna and therefore is not capable of transmitting or receiving any signals. As such, it may be avoided to allocate resources that will just repeat the last A-IoT activation session or will not be utilized at all. Fig. 2 shows a signaling chart of an embodiment of the present disclosure relating to all example aspects. In general, an activator 200 (e.g., according to the second example aspect) and a reader 100 (e.g., according to the first example aspect) may inform the SCU 300 (e.g., comprised by a network node; e.g., according to the third example aspect), e.g., in an A-IoT capability report, that they support more than one, e.g., different RFFE / antenna configurations for transmitting an activation signal and / or receiving a response from the A-loT Tag 400. Activator and reader may at this stage not provide a specific number of re-configuration options, or configuration relations / limitations. The SCU 300 may (e.g., before or after obtaining the AIoT capability report) setup a first A-IoT session with no specific request to the activator 200 and reader 100 regarding the RFFE / Antenna configuration. If replies from some, e.g., all expected, A-IoT tags 400 are received successfully (e.g., by the reader 100), the SCU 300 may end the current AIoT session, However, if one or more replies from expected A-loTTags 400 are missing, the SCU 300 may proceed to the next step. The SCU 300 may request the activator 200 and / or reader 100 to re-configure their RFFE / Antennas for a next A-loT session (e.g., targeting the A-IoTTags 400 that the SCU 300 didn’t receive a reply from). The SCU 300 may wait for re-configuration acknowledgement from the activator 200 and / or reader 100 before it allocates the resources for a second A-loT activation session. The procedure may ensure a resource- and time-efficient re-configuration of the activator 200 and reader 100 when operating in a dynamic environment where a measurement-based mapping may quickly become invalid. These advantages may in particular be obtained since the required sequential A-loT Tag activation sessions are performed timely when RFFE / Antenna re-configurations are finalized (e.g., based on the re-configuration completion message). Re-configuration may for instance be performed in a blind round-robin procedure, for instance terminated when replies from all A-loT Tag 400 are received by the SCU 300 or a time for the full A-loT session has expired. Step S101: Initialization of the activator 200, where the activator 200 may inform the SCU 300 that it supports one or more, in particular at least two, RFFE / antenna configurations for transmitting an activations signal. Initialization may comprise e.g., implicitly informing the SCU 300 when a request for a RFFE / antenna re-configuration is finalized. Step S102: Initialization of the reader 100, where the reader 100 informs the SCU 300 that it supports one or more, in particular at least two, RFFE / antenna configurations for receiving the response from the A-loT Tag 400 and, e.g. implicitly, that it can and / or will inform the SCU 300 when a request for an RFFE / antenna re-configuration is finalized. Step S103: The SCU 300 will allocate resources for the first activation session of A-loT Tags 400. Step S104: The allocated resources are communicated to the activator 200. Step S105: The allocated resources are communicated to the reader 100. Step S106: A first error scenario #1 may occur, wherein the activation signal is not detected at the A-loT Tag 400. The SCU 300 may or may not be aware of this and may or may not use such knowledge for enhanced and / or improved activator 200 and / or reader 100 RFFE / antenna re-configuration. Step S107: A second error scenario #2 may occur, wherein the activation signal is detected at the A-loT Tag 400. In step S108, still belonging to error scenario #2, the backscattered response from the A-loT Tag 400 is not received at the reader 100. The SCU 300 may or may not be aware of this (e.g., by a no-signal message) and may or may not use such knowledge for best activator 200 and / or reader 100 RFFE / Antenna reconfiguration. Step S109: The reader 100 informs the SCU 300 that it didn’t receive replies for all the expected A-loT tags 400 (e.g., if that information is available at the reader 100). The reader 100 may for instance additionally or alternatively, send the received replies from A-IoT tags 400 (if any) to the SCU 300. The SCU 300 may then know if the received replies from A-IoT Tags 400 are as expected or not. Step S110: In a first correction option #1, the SCU 300 may request the activator 200 for an RFFE / antenna re-configuration. This may be a preferred option if the SCU 300 has derived that the A-IoT Tag 400 was not activated by the activation signal of the activator 200. In a step Sill, still belonging to correction option #1, the activator 200 re-configures its RFEE / Antenna to a different state. The activator 200 and / or reader 100 may for instance keep track of these states (e.g., antenna configurations)(e.g., their respectively used antenna configurations). In other words, the activator 200 and / or reader 100 may store a history of respective selected antenna configurations and / or change antenna configurations according to a (e.g., deterministic) sequence. The activator 200 and / or reader 100 may shuffle between valid RFFE / antenna configuration when receiving a request for a re-configuration from the SCU 300. In a step S112, still part of correction option#!, the activator 200 may inform the SCU 300 thatthe RFFE / antenna re-configuration is finalized (e.g., re-configuration completion message). Step SI 13: In a second correction option #2, the SCU 300 may request the reader 100 for an RFFE / antenna re-configuration. This option may be preferred if the SCU 300 has derived that the A-IoT tag 400 reply was not received at the reader 100, e.g., despite a reception of the activation signal at the AIoT tag 400. In a step S114, still part of correction option#2, the reader 100 may re-configure its RFFE / antenna to a different state (e.g., antenna configuration). The reader 100 may be expected to keep track of these states and / or for instance shuffle between valid RFFE / antenna configurations when receiving a request for a reconfiguration from the SCU 300. In a step S115, still part of correction option #2, the reader 100 informs the SCU 300 that the RFFE / antenna re-configuration is finalized (e.g., re-configuration complete message). Step S116: The SCU 300 may allocate resources for the second activation session of A-IoT Tags 400. Fig. 3 shows a flowchart of an example embodiment according to the first example aspect, for instance performed and / or controlled by an apparatus (e.g., reader device). In a first step M100, the method comprises providing a configuration support message to a network node, for instance comprising an SCU (e.g., according to the third example aspect). The configuration support message indicates support for at least two antenna configurations. In a second step M102, the method comprising obtaining a configuration selection message from the SCU. The configuration selection message may indicate a specific supported antenna configuration to use by the reader device or may additionally or alternatively indicate that a different antenna configuration is to be selected by the reader device. Fig. 4 shows a flowchart of an example embodiment according to the second example aspect, for instance performed and / or controlled by an apparatus (e.g., activator device]. In a first step M200, the method comprises providing a configuration support message to a network node, for instance comprising an SCU (e.g., according to the third example aspect]. The configuration support message indicates support for at least two antenna configurations. In a second step M202, the method comprising obtaining a configuration selection message from the SCU. The configuration selection message may indicate a specific supported antenna configuration to use by the reader device or may additionally or alternatively indicate that a different antenna configuration is to be selected by the activator device. Fig. 5 shows a flowchart of an example embodiment according to the third example aspect, for instance performed and / or controlled by an apparatus (e.g., network node, e.g., comprising an SCU], In a first step M300, the method comprises obtaining a configuration support message from a second apparatus, for instance from a reader device (e.g., according to the first example aspect] or from an activator device (e.g., according to the second example aspect]. The configuration support message indicates support of the second apparatus for at least two antenna configurations. In a second step M302, the method comprises selecting one antenna configuration for the second apparatus. Selecting may comprise selecting a specific antenna configuration to be used by the second apparatus of may additionally or alternatively comprise determining that a different antenna configuration is to be selected by the second apparatus. In a third step M304, the method comprises providing a configuration selection message to the second apparatus. The configuration selection message may indicate a specific supported antenna configuration to use by the reader device or may additionally or alternatively indicate that a different antenna configuration is to be selected by the second apparatus. Fig. 6 shows an example block diagram of a reader 100 (e.g., according to the first example aspect]. The reader 100 may perform a method according to the first example aspect. The reader may comprise a user interface A160, a program memory A110, a main memory A120, and a data memory A140. Further, it comprises a processor A130. The reader 100 may further comprise functional units configuration support message provider A131 and configuration selection message obtainer A132 which correspond to the respective actions M100, M102 as shown in the flowchart of figure 3, respectively. A functional unit may for instance correspond to a code block within a memory A110, A120, A140. The functional units A131, A132 may for instance be connected to and / or control the communication interface A150. Fig. 7 shows an example block diagram of an activator 200 (e.g., according to the second example aspect]. The activator 200 may perform a method according to the second example aspect. The activator may comprise a user interface A260, a program memory A210, a main memory A220, and a data memory A240. Further, it comprises a processor A230. The activator 200 may further comprise functional units configuration support message provider A231 and configuration selection message obtainer A232 which correspond to the respective actions M200, M202 as shown in the flowchart of figure 4, respectively. A functional unit may for instance correspond to a code block within a memory A210, A220, A240. The functional units A231, A232 may for instance be connected to and / or control the communication interface A250. Fig. 8 shows an example block diagram of a network node 300, e.g., comprising an SCU, (e.g., according to the third example aspect). The network node 300 may perform a method according to the third example aspect. The network node may comprise a user interface A360, a program memory A310, a main memory A320, and a data memory A340. Further, it comprises a processor A330. The activator 200 may further comprise functional units configuration support message obtainer A331, antenna configuration selector A332 and configuration selection message provider A333 which correspond to the respective actions M300, M302 and M304 as shown in the flowchart of figure 5, respectively. A functional unit may for instance correspond to a code block within a memory A310, A320, A340. The functional units A331, A333 may for instance be connected to and / or control the communication interface A350. Fig. 9 is a schematic illustration of examples of tangible and non-transitory computer-readable storage media according to the present invention that may for instance be used to implement program and / or main memory A110, A120, A140, A210, A220, A240, A310, A320, A340 of the apparatus 100, 200 and / or 300 of Fig. 6 to 8. Fig. 9 shows a flash memory 900, which may for instance be soldered or bonded to a printed circuit board, a solid-state drive 901 comprising a plurality of memory chips (e.g. Flash memory chips), a magnetic hard drive 902, a Secure Digital (SD) card 903, a Universal Serial Bus (USB) memory stick 904, an optical storage medium 905 (such as for instance a CD-ROM or DVD) and a magnetic storage medium 906. Some embodiments comprise: Embodiment 1: A first method comprising: providing a configuration support message indicative of at least two supported antenna configurations to a network node; and obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session from the network node. Embodiment 2: The first method of embodiment 1, further comprising re-configuring at least one antenna based on the configuration selection message; and providing a re-configuration completion message indicative of a completion of the re-configuring to the network node. Embodiment 3: The first method of embodiment 1 or 2, further comprising obtaining a configuration-based allocation message indicative of at least one configuration-based allocated radio resource for the loT session from the network node, wherein the at least one configuration-based allocated radio resource is at least partially based on the at least one selected antenna configuration. Embodiment 4: The first method of any of embodiments 1 to 3, further comprising obtaining a default allocation message indicative of at least one default allocated radio resource for an initial loT session from the network node. Embodiment 5: The first method of any of embodiments 1 to 4, further comprising determining whether an loT response is received via the at least one default or the at least one configuration-based allocated radio resource; and means for, if it is determined that the loT response has not been received, providing a no-signal message, indicating that the loT response has been not been received, to the network node. Embodiment 6: The first method of any of embodiments 1 to 5, wherein at least one of the apparatus is a reader device; or the network node comprises a session control unit, SCU. Embodiment 7: The first method of any of embodiments 1 to 6, wherein at least one of: the default allocation message is obtained in response to providing the configuration support message; or the configuration selection message is obtained in response to providing the no-signal message. Embodiment 8: The first method of any of embodiments 1 to 7, wherein at least one of: the configuration support message is indicative of at least 3,4, 5, 6,7,8,16, 32, 64 or more supported antenna configurations; a supported antenna configuration is indicative of at least one of a receptive field of at least one or more antenna; one or a subset of antennas to be used; at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; or a frequency of a local oscillator; the configuration selection message is indicative of a change of antenna configuration; or at least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT response or activating an loT device. Embodiment 9: A second method comprising: providing a configuration support message indicative of at least two supported antenna configurations to a network node; and obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session from the network node. Embodiment 10: The second method of embodiment 9, further comprising re-configuring at least one antenna based on the configuration selection message; and providing a re-configuration completion message indicative of a completion of the re-configuring to the network node. Embodiment 11: The second method of embodiment 9 or 10, further comprising obtaining a configuration-based allocation message indicative of at least one configuration-based allocated radio resource for an loT session from the network node, wherein the at least one configuration-based allocated radio resource is at least partially based on the at least one selected antenna configuration. Embodiment 12: The second method of any of embodiments 9 to 11, further comprising obtaining a default allocation message indicative of at least one default allocated radio resource for an initial loT session from the network node. Embodiment 13: The second method of any of embodiments 9 to 12, wherein at least one of the apparatus is an activator device; or the network node comprises a session control unit, SCU. Embodiment 14: The second method of any of embodiments 9 to 13, wherein the default allocation message is obtained in response to providing the configuration support message. Embodiment 15: The second method of any of embodiments 9 to 14, wherein at least one of: the configuration support message is indicative of at least 3, 4, 5,6, 7,8,16, 32, 64 or more supported antenna configurations; a supported antenna configuration is indicative of at least one of a receptive field of at least one or more antenna; one or a subset of antennas to be used; at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; or a frequency of a local oscillator; the configuration selection message is indicative of a change of antenna configuration; or at least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT response or activating an loT device. Embodiment 16: A third method comprising: obtaining a configuration support message indicative of at least two supported antenna configurations from a second apparatus; selecting one antenna configuration from the at least two supported antenna configurations; and providing a configuration selection message indicative of the one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session to the second apparatus. Embodiment 17: The third method of embodiment 16, further comprising obtaining a re-configuration completion message indicative of a completion of an antenna reconfiguring from the second apparatus. Embodiment 18: The third method of embodiment 16 or 17, further comprising providing an configuration-based allocation message indicative of at least one configuration-based allocated radio resource for the loT session to the second apparatus, wherein the at least one configuration-based allocated radio resource is at least partially based on the selected antenna configuration. The third method of any of embodiments 16 to 18, further comprising providing a default allocation message indicative of at least one default allocated radio resource for an initial loT [e.g., AIoT]session to the second apparatus. Embodiment 20: The third method of any of embodiments 16 to 19, further comprising determining whether at least one of an loT response has been received or whether an loT device has been activated via the at least one default or the at least one configuration-based allocated radio resource. Embodiment 21: The third method of any of embodiments 16 to 20, further comprising means of repeating selecting one supported antenna configuration; providing a configuration selection message indicative of the one selected antenna configuration; and providing a configuration-based allocation message indicative of at least one configurationbased allocated radio resource for an loT or AIoT session, wherein the at least one configuration-based allocated radio resource is at least partially based on the selected antenna configuration. Embodiment 22: The third method of any of embodiments 16 to 21, wherein at least one of: the second apparatus is an activator; the second apparatus is a reader; or the apparatus comprises a session control unit, SCU. Embodiment 23: The third method of any of embodiments 16 to 22, wherein the selecting is done at least one of in a random manner or by iterating through the supported antenna configurations. Embodiment 24: The third method of any of embodiments 16 to 23, wherein the determining comprises receiving a no-signal message, indicating that no loT response has been received, from the second apparatus. Embodiment 25: The third method of any of embodiments 16 to 24, wherein at least one of: the default allocation message is provided in response to obtaining the configuration support message; or the configuration selection message is provided based on the determining whether at least one of an loT response has been received or an loT device has been activated. Embodiment 26: The third method of any of embodiments 16 to 25, wherein at least one of: the configuration support message is indicative of at least 3, 4, 5, 6, 7,8,16, 32, 64 or more supported antenna configurations; a supported antenna configuration is indicative of at least one of a receptive field of at least one or more antenna; one or a subset of antennas to be used; at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; or a frequency of a local oscillator; the configuration selection message is indicative of a change of antenna configuration; or at least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT response or activating an loT device. Embodiment 27: A first apparatus, e.g., a UE and / or a reader device, comprising respective means for performing the method of any of Embodiments 1 to 8. Embodiment 28: An first apparatus, e.g., a UE and / or a reader device, comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform and / or control the method according any of embodiments 1 to 8. Embodiment 29: A second apparatus, e.g., a UE and / or an activator device, comprising respective means for performing the method of any of Embodiments 9 to 15. Embodiment 30: An second apparatus, e.g., a UE and / or an activator device, comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform and / or control the method according any of embodiments 9 to 15. A third apparatus, e.g., a network node, e.g., comprising an SCU, comprising respective means for performing the method of any of Embodiments 16 to 26. Embodiment 32: An third apparatus, e.g., a network node, e.g., comprising an SCU, comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform and / or control the method according any of embodiments 16 to 26. Embodiment 33: A computer program, the computer program when executed by a processor causing an apparatus, e.g. the apparatus according to embodiment 2 7 or 28, to perform and / or control the actions and / or steps of the method of any of embodiments 1 to 8. Embodiment 34: A computer program product comprising a computer program according to embodiment 33. Embodiment 35: A computer program, the computer program when executed by a processor causing an apparatus, e.g. the apparatus according to embodiment 29 or 30, to perform and / or control the actions and / or steps of the method of any of embodiments 9 to 15. Embodiment 36: A computer program product comprising a computer program according to embodiment 35. Embodiment 37: A computer program, the computer program when executed by a processor causing an apparatus, e.g. the apparatus according to embodiment 31 or 32, to perform and / or control the actions and / or steps of the method of any of embodiments 16 to 26. Embodiment 38: A computer program product comprising a computer program according to embodiment 37. Embodiment 39: A system comprising: at least one first apparatus according to any of the embodiments 27 or 28,; at least one second apparatus according to any of the embodiments 29 or 30; and at least one third apparatus according to any of the embodiments 31 or 32. Any presented connection in the described embodiments is to be understood in a way that the involved components are operationally coupled. Thus, the connections can be direct or indirect with any number or combination of intervening elements, and there may be merely a functional relationship between the components. Further, as used in this text, the term ‘circuitry* refers to any of the following: (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) (b) combinations of circuits and software (and / or firmware), such as: (i) to a combination of processor(s) or (ii) to sections ofprocessor(s) / software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a mobile phone, to perform various functions) and (c) to circuits, such as a microprocessor(s) or a section of a microprocessor (s), that re-quire software or firmware for operation, even if the software or firmware is not physically present. This definition of 'circuitry' applies to all uses of this term in this text, including in any claims. As a further example, as used in this text, the term ‘circuitry* also covers an implementation of merely a processor (or multiple processors) or section of a processor and its (or their) accompanying software and / or firmware. The term ‘circuitry’ also covers, for example, a baseband integrated circuit or applications processor integrated circuit for a mobile phone. Any of the processors mentioned in this text, in particular but not limited to processors 130, 230, 330 of Figs. 9 to 15, could be a processor of any suitable type. Any processor may comprise but is not limited to one or more microprocessors, one or more processor (s) with accompanying digital signal processor(s), one or more processor(s) without accompanying digital signal processor(s), one or more special-purpose computer chips, one or more field-programmable gate arrays (FPGAS), one or more controllers, one or more application-specific integrated circuits (ASICS), or one or more computer(s). The relevant structure / hardware has been programmed in such a way to carry out the described function. Moreover, any of the actions or steps described or illustrated herein may be implemented using executable instructions in a general-purpose or special-purpose processor and stored on a computer-readable storage medium (e.g., disk, memory, or the like) to be executed by such a processor. References to ‘computer-readable storage medium’ should be understood to encompass specialized circuits such as FPGAs, ASICs, signal processing devices, and other devices. Moreover, any of the actions described or illustrated herein may be implemented using executable instructions in a general-purpose or special-purpose processor and stored on a computer-readable storage medium (e.g., disk, memory, or the like) to be executed by such a processor. References to ‘computer-readable storage medium’ should be understood to encompass specialized circuits such as FPGAs, ASICs, signal processing devices, and other devices. The wording "A, or B, or C, or a combination thereof’ or "at least one of A, B and C" may be understood to be not exhaustive and to include at least the following: (i) A, or (ii) B, or (iii) C, or (iv) A and B, or (v) A and C, or (vi) B and C, or (vii) A and B and C. It will be understood that the embodiments disclosed herein are only exemplary, and that any feature presented for a particular exemplary embodiment may be used with any aspect of the present disclosure on its own or in combination with any feature presented for the same or another particular exemplary embodiment and / or in combination with any other feature not mentioned. It will further be understood that any feature presented for an example embodiment in a particular category may also be used in a corresponding manner in an example embodiment of any other category. LIST OF ABBREVIATIONS AIoT ambient I0T R2D reader to device (Activation signal) D2R device to reader (Response signal) BPSK binary phase shift keying SFO Sampling Frequency Offset CC component carrier CA carrier aggregation CW Carrier Wave scu Session Control Unit RFFE RF Front End CA Carrier Aggregation TDD Time Division Duplex FDD Frequency Division Duplex LB Low Band MHB Mid-High Band UHB Ultra-High Band PA Power Amplifier

Claims

1. An apparatus comprising:means for providing a configuration support message indicative of at least two supported antenna configurations to a network node; andmeans for obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session from the network node.

2. The apparatus according to claim 1, further comprising:means for re-configuring at least one antenna based on the configuration selection message; and means for providing a re-configuration completion message indicative of a completion of the reconfiguring to the network node.

3. The apparatus according to claim 1 or 2, further comprising:means for obtaining a configuration-based allocation message indicative of at least one configuration-based allocated radio resource for the loT session from the network node, wherein the at least one configuration-based allocated radio resource is at least partially based on the at least one selected antenna configuration.

4. The apparatus according to any of claims 1 to 3, further comprising:means for obtaining a default allocation message indicative of at least one default allocated radio resource for an initial loT session from the network node.

5. The apparatus according to any of claims 1 to 4, further comprising:means for determining whether an loT response is received via the at least one default or the at least one configuration-based allocated radio resource; andmeans for, if it is determined that the loT response has not been received, providing a no-signal message, indicating that the loT response has been not been received, to the network node.

6. The apparatus according to any of claims 1 to 5, wherein at least one ofthe apparatus is a reader device; orthe network node comprises a session control unit, SCU.

7. The apparatus according to any of claims 4 to 6, wherein at least one of:the default allocation message is obtained in response to providing the configuration support message; orthe configuration selection message is obtained in response to providing the no-signal message.

8. The apparatus according to any of claims 1 to 7, wherein at least one of:the configuration support message is indicative of at least 3, 4, 5,6,7,8,16, 32, 64 or more supported antenna configurations;a supported antenna configuration is indicative of at least one ofa receptive field of at least one or more antenna;one or a subset of antennas to be used;at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; ora frequency of a local oscillator;the configuration selection message is indicative of a change of antenna configuration; orat least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT response or activating an loT device.

9. An apparatus comprising:means for providing a configuration support message indicative of at least two supported antenna configurations to a network node; andmeans for obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session from the network node.

10. The apparatus according to claim 9, further comprising:means for re-configuring at least one antenna based on the configuration selection message; and means for providing a re-configuration completion message indicative of a completion of the reconfiguring to the network node.

11. The apparatus according to claim 9 or 10, further comprising:means for obtaining a configuration-based allocation message indicative of at least one configuration-based allocated radio resource for an loT session from the network node, wherein the at least one configuration-based allocated radio resource is at least partially based on the at least one selected antenna configuration.

12. The apparatus according to any of claims 9 to 11, further comprising:means for obtaining a default allocation message indicative of at least one default allocated radio resource for an initial loT session from the network node.

13. The apparatus according to any of claims 9 to 12, wherein at least one ofthe apparatus is an activator device; orthe network node comprises a session control unit, SCU.

14. The apparatus according to claim 12 or 13, whereinthe default allocation message is obtained in response to providing the configuration support message.

15. The apparatus according to any of claims 9 to 14, wherein at least one of:the configuration support message is indicative of at least 3,4, 5, 6,7,8,16, 32, 64 or more supported antenna configurations;a supported antenna configuration is indicative of at least one ofa receptive field of at least one or more antenna;one or a subset of antennas to be used;at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; ora frequency of a local oscillator;the configuration selection message is indicative of a change of antenna configuration; orat least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT response or activating an loT device.

16. An apparatus comprising:means for obtaining a configuration support message indicative of at least two supported antenna configurations from a second apparatus;means for selecting one antenna configuration from the at least two supported antenna configurations; andmeans for providing a configuration selection message indicative of the one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session to the second apparatus.

17. The apparatus according to claim 16, further comprisingmeans for obtaining a re-configuration completion message indicative of a completion of an antenna re-configuring from the second apparatus.

18. The apparatus according to claim 16 or 17, further comprising:means for providing an configuration-based allocation message indicative of at least one configuration-based allocated radio resource for the loT session to the second apparatus, wherein the at least one configuration-based allocated radio resource is at least partially based on the selected antenna configuration.

19. The apparatus according to any of claims 16 to 18, further comprising:means for providing a default allocation message indicative of at least one default allocated radio resource for an initial loT [e.g., AIoT]session to the second apparatus.

20. The apparatus according to any of claims 16 to 19, further comprising:means for determining whether at least one of an loT response has been received or whether an loT device has been activated via the at least one default or the at least one configuration-based allocated radio resource.

21. The apparatus according to any of claims 16 to 20, further comprising:means of repeatingselecting one supported antenna configuration;providing a configuration selection message indicative of the one selected antenna configuration; andproviding a configuration-based allocation message indicative of at least one configurationbased allocated radio resource for an loT or AIoT session, wherein the at least one configuration-based allocated radio resource is at least partially based on the selected antenna configuration.

22. The apparatus according to any of claims 16 to 21, wherein at least one ofthe second apparatus is an activator;the second apparatus is a reader; orthe apparatus comprises a session control unit, SCU.

23. The apparatus according to any of claims 16 to 22, whereinthe selecting is done at least one of in a random manner or by iterating through the supported antenna configurations.

24. The apparatus according to any of claims 16 to 23, whereinthe determining comprises receiving a no-signal message, indicating that no loT response has been received, from the second apparatus.

25. The apparatus according to any of claims 16 to 24, wherein at least one of:the default allocation message is provided in response to obtaining the configuration support message; orthe configuration selection message is provided based on the determining whether at least one of an loT response has been received or an loT device has been activated.

26. The apparatus according to any of claims 16 to 25, wherein at least one of:the configuration support message is indicative of at least 3, 4, 5, 6, 7,8,16, 32, 64 or more supported antenna configurations;a supported antenna configuration is indicative of at least one ofa receptive field of at least one or more antenna;one or a subset of antennas to be used;at least one filter coefficient of a digital filter to be applied to signals received at at least one antenna; ora frequency of a local oscillator;the configuration selection message is indicative of a change of antenna configuration; orat least one of the default allocation message or the configuration-based allocation message indicates at least one radio resource in at least one of time or frequency for at least one of reading an loT response or activating an loT device.

27. A system comprisinga first apparatus, comprisingmeans for providing a configuration support message indicative of at least two supported antenna configurations to a network node; andmeans for obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session from the network node; anda second apparatus, comprisingmeans for providing a configuration support message indicative of at least two supported antenna configurations to the network node; andmeans for obtaining a configuration selection message indicative of at least one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session from the network node; anda third apparatus, comprisingmeans for obtaining a configuration support message indicative of at least two supported antenna configurations from the first or the second apparatus;means for selecting one antenna configuration from the at least two supported antenna configurations; andmeans for providing a configuration selection message indicative of the one selected antenna configuration of the at least two supported antenna configurations for an Internet of Things, loT, session to the first or the second apparatus.

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