Multi radio access technology spectrum sharing

Abstract

An apparatus for user equipment, UE, comprising: means for receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET,

Description

Technical Field The present disclosure relates, in general, to multi radio access technology (RAT) spectrum sharing (MRSS). Aspects relate to allocation of physical control channel resources in MRSS network cells. Background Due to the scarcity of spectrum, migrating from one generation of mobile communication network to another is not straightforward, especially when the requirement to avoid compromising the experience of existing users is taken into account. For example, a wide range of frequency bands are targeted by the sixth generation of mobile communication networks (6G), including low-band / mid-band as well as the mmWave spectrum band. While new spectrum bands may be allocated for 6G in future, the existing frequency ranges utilized by 5G (new radio, NR) remain important for 6G coverage and capacity. For example, no new low-band spectrum is expected to become available in key 6G markets by the planned implementation date of 2030, and so the ability to leverage existing 5G spectrum will play a pivotal role in the successful and cost efficient migration to 6G Radio Access Technology (RAT). In order to enable such a smooth transition between network technologies without compromising network performance, Multi-RAT Spectrum Sharing (MRSS) is widely considered to be a suitable solution. MRSS enables sharing of the same frequency bands across multiple radio access technologies (RATs). Summary An objective of the present disclosure is to provide an MRSS implementation that enables efficient usage of PDCCH resources by way of a virtual Control Resource Set (CORESET) for 6G UEs. Specifically, non-contiguous control channel elements (CCEs) are mapped to a virtual CORESET that comprises a set of logically contiguous CCEs that are indicated to and utilised by a (e.g., 6G) UE. The foregoing and other objectives are achieved by the features of the independent claims. Further implementation forms are apparent from the dependent claims, the description and the Figures. According to an aspect, there is provided an apparatus for user equipment, comprising: means for receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and means for composing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the apparatus further comprises means for monitoring a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus. In an embodiment, the apparatus further comprises means for blind decoding data received at the apparatus from the node using the set of logically contiguous CORESET resources. In an embodiment, the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications. In an embodiment, the means for receiving, from the network node, are configured to receive, from the network node, mapping information indicating how to map the non contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and wherein the means for composing are configured to compose the set of logically contiguous CORESET resources on the basis of the mapping information. In an embodiment, the means for receiving, from the network node, are configured to receive the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the means for receiving, from the network node, are configured to receive a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. In an embodiment, the means for receiving, from the network node, comprises means for receiving, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the apparatus further comprises means for using, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. According to another aspect, there is provided an apparatus for a network node of a first radio access technology, RAT, the apparatus comprising: means for receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT; means for determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; means for transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus; means for operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; and means for broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET. In an embodiment, the apparatus further comprises means for receiving from the network node of the second RAT, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus. In an embodiment, the apparatus further comprises means for receiving, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources. In an embodiment, the apparatus further comprises means for determining a size of the logically contiguous CORESET resources for the CORESET resource configuration information. In an embodiment, the means for receiving, from the network node of the second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT, comprises means for receiving, from the network node of the second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the apparatus is configured to broadcast the information comprising the time and frequency location of the set of non-contiguous physical resources of the CORESET in a System Information Block message, or Master Information Block message. In an embodiment, the time and frequency location of the set of non-contiguous physical resources of the CORESET is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. In an embodiment, the apparatus is configured for communication with the network node of the second RAT using an inter node interface. In an embodiment, the apparatus is configured for communication with the network node of the second RAT using an internal interface. According to another aspect, there is provided an apparatus for a network node of a second radio access technology, RAT, the apparatus comprising: means for transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus; means for receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of noncontiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; and means for operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus. In an embodiment, the apparatus considers the resources available for the set of logically contiguous CORESET resources for the network node of the first RAT as at least one of the following: semi-statically reserved or protected resources. In an embodiment, the apparatus further comprises means for transmitting, to the network node of the first RAT, dynamic information representing an indication of transmitted resources which are part of overlapping CORESET resources. In an embodiment, the means for transmitting, to the network node of the first RAT, information comprising an indication of a configured set of resources for use by the apparatus, comprises means for transmitting, to the network node of the first RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the apparatus is configured to transmit the CORESET resource configuration information using a System Information Block message, or Master Information Block message. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. In an embodiment, the apparatus is configured for communication with the network node of the first RAT using an inter node interface. In an embodiment, the apparatus is configured for communication with the network node of the first RAT using an internal interface. According to another aspect, there is provided a method comprising: receiving, by user equipment from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and composing, by the user equipment on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the noncontiguous resources of the CORESET of the first radio access technology. In an embodiment, the user equipment monitors a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus. In an embodiment, the user equipment further performs blind decoding data received at the user equipment from the network node using the set of logically contiguous CORESET resources. In an embodiment, the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications. In an embodiment, the user equipment receives, from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and composes the set of logically contiguous CORESET resources on the basis of the mapping information. In an embodiment, the user equipment receives the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the user equipment receives a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. In an embodiment, the user equipment receives, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the user equipment uses, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. According to another aspect, there is provided a method for a network node of a first radio access technology, RAT, the method comprising: receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT; determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus; means for operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; and broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET. In an embodiment, the network node of the first RAT receives from the network node of the second RAT, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus. In an embodiment, the network node of the first RAT receives, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources. In an embodiment, the network node of the first RAT determines a size of the logically contiguous CORESET resources for the CORESET resource configuration information. In an embodiment, the network node of the first RAT receives, from the network node of the second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the network node of the first RAT broadcasts the information comprising the time and frequency location of the set of non-contiguous physical resources of the CORESET in a System Information Block message, or Master Information Block message. In an embodiment, the time and frequency location of the set of non-contiguous physical resources of the CORESET is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. According to another aspect, there is provided a method for a network node of a second radio access technology, RAT, the method comprising: transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus; receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of non-contiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; and operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus. In an embodiment, the network node of the second RAT considers the resources available for the set of logically contiguous CORESET resources for the network node of the first RAT as at least one of the following: semi-statically reserved or protected resources. In an embodiment, the network node of the second RAT transmits, to the network node of the first RAT, dynamic information representing an indication of transmitted resources which are part of overlapping CORESET resources. In an embodiment, the network node of the second RAT transmits, to the network node of the first RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the network node of the second RAT transmits the CORESET resource configuration information using a System Information Block message, or Master Information Block message. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. According to an aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus for user equipment, cause the apparatus to perform at least the following: receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and composing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology. According to an aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following: receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT; determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus; operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; and broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET. According to an aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following: transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus; receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of non-contiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; and operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus. These and other aspects of the invention will be apparent from the embodiment(s) described below. Brief Description of the Drawings In order that the present disclosure may be more readily understood, embodiments will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a schematic representation of signaling between a UE and MRSS cells, according to an example; Figure 2 is a schematic representation of a virtual CORESET composition, according to an example; Figure 3 is a schematic representation of CCEs for an MRSS cell, according to an example; Figure 4 is a flowchart of a process, performed by a UE, according to an example; and Figure 5 is a schematic representation of a machine according to an example. Detailed Description Example embodiments are described below in sufficient detail to enable those of ordinary skill in the art to embody and implement the systems and processes herein described. It is important to understand that embodiments can be provided in many alternate forms and should not be construed as limited to the examples set forth herein. Accordingly, while embodiments can be modified in various ways and take on various alternative forms, specific embodiments thereof are shown in the drawings and described in detail below as examples. There is no intent to limit to the particular forms disclosed. On the contrary, all modifications, equivalents, and alternatives falling within the scope of the appended claims should be included. Elements of the example embodiments are consistently denoted by the same reference numerals throughout the drawings and detailed description where appropriate. The terminology used herein to describe embodiments is not intended to limit the scope. The articles “a,” “an,” and “the” are singular in that they have a single referent, however the use of the singular form in the present document should not preclude the presence of more than one referent. In other words, elements referred to in the singular can number one or more, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes,” and / or “including,” when used herein, specify the presence of stated features, items, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, items, steps, operations, elements, components, and / or groups thereof. The term “and / or” is only an association relationship for describing associated objects and represents that three relationships may exist such that A and / or B may indicate that A exists alone, A and B exist at the same time, or B exists alone. The character “ / ” generally represents that the associated objects are in an “or” relationship. Unless otherwise defined, all terms (including technical and scientific terms) used herein are to be interpreted as is customary in the art. It will be further understood that terms in common usage should also be interpreted as is customary in the relevant art and not in an idealized or overly formal sense unless expressly so defined herein. The following contains specific information related to implementations of the present disclosure. The drawings and their accompanying detailed disclosure are merely directed to implementations. However, the present disclosure is not limited to these implementations. Other variations and implementations of the present disclosure will be obvious to those skilled in the art. The phrases “in one implementation,” or “in some implementations,” may each refer to one or more of the same or different implementations. The term “coupled” is defined as connected whether directly or indirectly through intervening components and is not necessarily limited to physical connections. The expression “at least one of A, B and C” or “at least one of the following: A, B and C” means “only A, or only B, or only C, or any combination of A, B and C ” The terms “system” and “network” may be used interchangeably. For the purposes of explanation and non-limitation, specific details such as functional entities, techniques, protocols, and standards are set forth for providing an understanding of the present disclosure. In other examples, detailed disclosure of well-known methods, technologies, systems, and architectures are omitted so as not to obscure the present disclosure with unnecessary details. Persons skilled in the art will immediately recognize that any network function(s) or algorithm(s) disclosed may be implemented by hardware, software or a combination of software and hardware. Disclosed functions may correspond to modules which may be software, hardware, firmware, or any combination thereof. A software implementation may include machine- and / or computer- readable and / or executable instructions stored on a machine- and / or computer-readable medium such as memory or other types of storage devices. One or more microprocessors or general-purpose computers with communication processing capability may be programmed with corresponding executable instructions and perform the disclosed network function(s) or algori thm(s). The microprocessors or general-purpose computers may include Applications Specific Integrated Circuitry (ASIC), programmable logic arrays, and / or using one or more Digital Signal Processor (DSPs). Although some of the disclosed implementations are oriented to software installed and executing on computer hardware, alternative implementations implemented as firmware or as hardware or as a combination of hardware and software are well within the scope of the present disclosure. The computer readable medium includes but is not limited to Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory, Compact Disc Read-Only Memory (CD-ROM), magnetic cassettes, magnetic tape, magnetic disk storage, or any other equivalent medium capable of storing computer-readable instructions. Examples described may be implemented in a communication network, such as any of the following radio access technologies (RATs): Worldwide Interoperability for Micro wave Access (WiMAX), Global System for Mobile communications (GSM, 2G), GSM EDGE radio access Network (GERAN), General Packet Radio Service (GPRS), Universal Mobile Telecommunication System (UMTS, 3G) based on basic wideband-code division multiple access (W-CDMA), high-speed packet access (HSPA), Long Term Evolution (LTE), LTE-Advanced, and enhanced LTE (eLTE), 5G (also called NR), or any future RAT such as 6G. Moreover, communication within the communication network may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiple (OFDM), and / or Discrete Fourier Transform spread OFDM (DFT-s-OFDM). As used herein, the term “network device” or “network node” refers to a node in a communication network via which user equipment may access the network and / or which is capable of controlling radio communication and managing radio resources within a cell. The network node or network device may be referred to as a base station (BS), an access point (AP) or an access node. The network device may be, depending on the applied technology, for example, a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), an NR NB (also referred to as a gNB), a Remote Radio Unit (RRU), a radio head (RH), a remote radio head (RRH), a relay, an Integrated Access and Backhaul (IAB) node, a low power node, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, or an aircraft network device. Moreover, in connection of split radio access network (RAN), the network device may refer to a centralised unit (CU) of a base station and / or a distributed unit (DU) of a base station. An interface between CU and DU may be referred to as an Fl interface in NR. In the split RAN architecture, node operations may be carried out, at least partly, in the central / centralized unit, CU, (e.g. server, host or node) operationally coupled to the DU, (e.g. a radio head / node). One CU may control one or more DUs, acting at least as transmit / receive (Tx / Rx) nodes. In some embodiments, the DUs may comprise e.g. a radio link control (RLC), medium access control (MAC) layer and a physical (PHY) layer, whereas the CU may comprise the layers above RLC layer, such as a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) and an internet protocol (IP) layers. Other functional splits are possible too. In practice, any processing task may be performed in either the CU or the DU and the boundary where the responsibility is shifted between the CU and the DU may depend on the applied implementation. The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example, a terminal device may be referred to as a communication device, user equipment (UE), a Subscriber Station (SS), or a Mobile Station (MS). The terminal device may include a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones a tablet, a wearable terminal device, a personal digital assistant (PDA), portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, USB dongles, an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD), a vehicle, a drone, a medical device and applications (e.g., remote surgery), an industrial device and applications (e.g., a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts), a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. A term “resource”, as used herein, may refer to radio resources in time domain, in frequency domain, in space domain, and / or in code domain. Some examples of resources include e.g. a physical resource block (PRB), a radio frame, a subframe, a time slot, a subband, a frequency region, a sub-carrier, a beam, etc. The term “transmission” and / or “reception” may refer to wirelessly transmitting and / or receiving via a wireless propagation channel on radio resources. Certain acronyms and / or abbreviations may be used herein, such as for example: CCE Control Channel Element CORESET Control Resource Set DCI Downlink Control Information DMRS Demodulation Reference Signal DSS Dynamic Spectrum Sharing DU Distributed Unit MRSS Multi-RAT Spectrum Sharing PDCCH Physical Downlink Control Channel PDSCH Physical Downlink Control Channel PRB Physical Resource Block REG Resource Element Group RNTI Radio Network Temporary Identifier SIB System Information Block UE User Equipment Typically, when deploying a new RAT, operators can implement MRSS on low frequency bands in order to maximise coverage and then supplement these low frequency bands with capacity via, e.g., midbands (which could also use MRSS). In the low frequency 5 bands, the bandwidths available are typically small (eg., 5 MHz) and user equipment (UE) can continue to expect pipelined processing such that physical downlink control channel (PDCCH) information is received before that of, e.g., physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH). Accordingly, there is a limitation on the capacity available for PDCCH if spectral efficiency targets are to be kept 10 (or improved) in 6G. MRSS deployments typically employ the same radio unit for NR and 6G. However their baseband processing can be within the same distributed unit (DU) or in different distributed units. There are multiple scenarios where different distributed units may be 15 required for the deployment of MRSS, such as, e.g., a NR distributed unit is short on capacity, or a NR and 6G distributed units are provided by different vendors, or NR DU is located at a cell site and 6G is centralized or in the cloud. In the case of separate DUs for NR and 6G, an interface between the DUs can be used for the exchange of information. This can be, e.g., an Xn interface for semi-static configuration or information. In the context of migration from NR to 6G for example, to enable maximum spectral efficiency for 6G, MRSS cells should minimize the additional PDCCH resources required on top of the already reserved NR PDCCH resources. NR CORESETs are defined on the basis of a number of symbols and Control Channel Elements (CCE). A CCE is a set of 6 Resource Element Groups (REGs) which, e g., consist of 6 consecutive resource blocks (RBs) in one orthogonal frequency division multiplex (OFDM) symbol. A CCE is the minimum amount of physical resources which can be used to transmit PDCCH information, i.e., Downlink Control Information (DCI). An aggregation level comprises a parameter to specify how many CCEs can be grouped together to form a PDCCH candidate, i.e., the number of CCEs that will be used for a DCI transmission. When allocating CCEs for the transmission of a DCI, the CCEs can be interleaved or non-interleaved. If interleaving is employed, 3GPP specifies a pattern for the UE to determine the location of the CCEs. However, CCEs allocated for a UE may no longer be in consecutive order when interleaving is employed. The interleaving process tends to spread the UE’s CCE resources first in the time domain (across all symbols of the CORESET) and then across the frequency domain in order to maximize diversity gains. As NR PDCCH typically applies interleaving, this leads to scenario with a variable amount of unused CCE resources between the CCEs employed by a NR scheduler. Furthermore, the CCEs used per slot in NR will vary depending on the UEs scheduled in UL and DL, their Radio Network Temporary Identifier (RNTI) and their radio conditions which will dictate the number of CCEs each one of them requires. In order to minimize development efforts and impact to NR performance, it is likely that NR would perform its PDCCH scheduling first. However, due to the use of interleaving this means that some unused CCEs will be spread across the CORESET. Accordingly, a 6G PDCCH scheduler would have to find 6G UEs for which the remaining CCEs can be used according to an interleaving pattern and the number of CCEs required for the UEs required aggregation level. However, this is a complex task and can lead to PDCCH blocking. Furthermore, even a combined PDCCH scheduler for NR and 6G would not solve this issue and would still run into the same challenges described above. A lower complexity solution would be to allocate different search spaces for NR and 6G, such that they are not on the symbol of the slot. However, this is also not the most efficient solution even with NR and 6G scheduler coordination. For example, if a NR Search Space is located on symbols 0 and 1 and a 6G Search Space is located in symbol 2 of the slot, the 6G scheduler could inform the 5G scheduler when it is not employing its PDCCH resources in a slot so that the NR scheduler can employ 12 symbol PDSCH instead of 11 symbol PDSCH. However, if the 6G scheduler has to schedule a single CCE, then the remainder of the symbol 2 is a wasted resource. As noted above, MRSS should minimize overheads such that legacy NR users see minimal impact from deployment of MRSS cells and 6G users can obtain similar or better spectral efficiency than NR users on MRSS cells. According to an example, there is provided a more optimal way to enable PDCCH allocation for MRSS cells that is also future proof for when device penetration of 6G surpasses that of NR. In an implementation, efficient usage of PDCCH resources in MRSS cells is based on the establishment of a virtual CORESET for 6G UEs. The virtual CORESET is composed of non-contiguous CCEs which are indicated to the UE. In an example, a virtual CORESET comprises a set of logically contiguous CORESET resources that is composed on the basis of at least a set of non-contiguous resources. As such, reference herein to a virtual CORESET corresponds to a set of logically contiguous CORESET resources. Figure 1 is a schematic representation of signaling between a UE and MRSS cells, according to an example. In the example of figure 1, a 6G UE 100 is in communication with a 6G cell / node 103. At 101, the NR MRSS cell / Node 105 provides the 6G MRSS Cell / Node 103 with information on at least its configured CORESETs and Search Spaces. The NR node could additionally provide information on the PDCCH load. The 6G MRSS Cell / Node 103 uses this information to determine the optimal configuration of the 6G CORESETs and Search Spaces, for example the amount of 6G CCEs which could be overlapped and the amount of 6G CCEs that should not be overlapped (201). At 301, based on the 6G node 103 determination, the 6G node 103 may provide the NR node 105 with information on PDCCH resources it needs reserved for 6G transmission, and the information may be transmitted on, for example, SIB1. The reservation of resources requested for 6G could also include pre-configured resources for a signal comprising information for the time and frequency location of CORESET resource configuration information. Pre-configured resources may be configured to be within the NRPDDCH region. In other examples, the pre-configured resources may be arranged to be within the same symbols as the Search Space or in the preceding or following (subsequent) symbols, but in the same time slot. As a consequence, channel estimation for a signal on the pre-configured resources could be based on the PDCCH DMRS of the time slot. At 401 the UE 100 can be made aware of the location and transmission type (e.g., periodic, aperiodic, both) of the pre-configured resources via, for example, SIB 1. In an alternative example the pre-configured resources for the determination of a virtual CORESET could be provided via other System Information messages or via information relating to an RRC connected state. At 501 UE 100 is configured with an initial 6G CORESET (e g. a CORESET0), initial Search Spaces (which it may have acquired from the 6G SIB1) and is aware of how and when to search for the a PDCCH on a virtual CORESET. At 601 the NR node 105 proceeds with known scheduling processes and determines the CCE resources it will be employing for a slot x. At 701 the NR node 105 shares the CCE resources it plans to use with the 6G node 103. At 801 the 6G node 103 determines if it needs to employ the virtual CORESET for slot x. In an example, the pre-configured signals on the pre-configured resources may not be transmitted every time a 6G UE needs to be scheduled and instead may be transmitted periodically or aperiodically based on 6G scheduler decisions. The scheduler decisions to transmit the pre-configured signals (i.e., to employ the virtual CORESET) can, in an example, be based on: - the possibility to schedule the UEs without the need to employ a virtual CORESET. This could be possible if, for example, CCEs used by NR are localized in an area and there are enough CCEs outside this area to schedule all the required 6G UEs. In this case an aperiodic approach could be employed for example. Depending on the number of UEs the scheduler plans to schedule in UL / DL in the next slot, contiguous resources may be sufficient to meet the required needs. Accordingly, in an example, the scheduler can save the resources associated with a transmission of the indication of the virtual CORESET configuration and save processing at the node 105 and UE 100 by using a contiguous CORESET rather than the virtual CORESET. - for periods of low (NR and 6G) traffic load where a more semi-static approach can be employed with periodic transmission of long periodicity. - for cases where a UE does not detect the pre-configured resources to determine the virtual CORESET the UE can employ the 6G defined CORESET in association with its configured Search Spaces. In an example, a block error rate (BLER) associated with pre-configured resources is <1%, which is aligned with a current targeted PDCCH BLER (of 1 %). Accordingly, if the UE cannot decode the pre-configured resources indication when it is transmitted by the scheduler, the situation would end up being largely the same as one in which there is a PDCCH transmission with errors which the UE cannot recover (so that it ends up requiring a retransmission). At 901 6G node 103 determines the need to employ the virtual CORESET and proceeds to schedule UEs based on the virtual CORESET. At 1001 the amount of resources needed for the pre-configured signal indicating the CCEs available for composition of the virtual CORESET is dependent on the NR CORESET / Search Space and 6G CORESET / Search Space overlap size in at least frequency domain. This can be semi-statically informed to the UE 100 via, e.g., SIB1. For example, a virtual CORESET can be formed by CCEs that are shared between 5G and 6G (see, e.g., 201, 301 of figure 1) and not used by 5G (see, e.g., 701 of figure 1). In cells with small bandwidths, e.g., 10 MHz, the number of CCEs that can be configured for NR are typically small so the amount of information to be indicated by the pre configured resources is also reduced, thereby reducing the overhead imposed by this preconfigured signal. At 1101 and 1201 the UE 100 is relayed information on how to determine the virtual CORESET and the UE 100 uses this information to determine the virtual CORESET (1301) which is used instead of the other configured 6G CORESETs for blind decoding the UE configured Search Spaces (1401). Figure 2 is a schematic representation of a virtual CORESET composition, according to an example. In the example of figure 2, out of available CCEs 211 in a 6G CORESET, some (213, shown diagonal hatching) may be employed by NR. The unused CCE’s 215, which comprise any of the available CCEs 211 that are not employed by NR, are indicated to the UE 100 via a bitmap 216 in the pre-configured resources. The UE 100 can employ this bitmap to compose a virtual CORESET 217 of contiguous CCE resources. The UE 100 and network use the virtual CORESET 217 for scheduling CCEs (CCE numbering and interleaving for example). Note that, given the mapping of the physical (215) to virtual CORESET (217) is based on potentially variable gaps between CCEs, the interleaving gains for 6G may, in some instances, be smaller than those of NR. The 6G scheduler may lose some control of the spacing between the interleaved CCEs. Figure 3 is a schematic representation of CCEs for an MRSS cell, according to an example. In the example of figure 3, some CCEs of NR and 6G Search Space are overlapping or shared from network point of view. In the example of figure 3 there are 7 such shared CCEs, hence the information on available CCEs could be provided with a bitmap of 7 bits, where each bit indicates the availability of a CCE (similarly to the bitmap illustrated in figure 2). In an example, this information can be transmitted to the UE 100 over pre-configured resources which could span, e.g., 4 PRBs (providing this provides enough coding rate for reliable decoding at the UE 100). In cells with large bandwidths, e.g., 100 MHz, this framework could be leveraged to reduce overheads when NR UEs are few and there is a high penetration of 6G UEs. This would allow for overhead reduction. In cells with large bandwidth the amount of information to be provided via the pre-configured resources could be larger due to the higher number of CCEs available. To minimize the overhead of the pre-configured resources in this case, each bit in the bitmap could indicate the usage of more than one CCE, i.e., the granularity of each bit in the bitmap can, in an example, correspond to the availability of, e.g., 2 or 4 CCE’s. This allows for a tradeoff between the imposed overhead of the framework and the achievable gains. Note as also mentioned previously the overlap region between NR and 6G Search Spaces could be reduced to decrease the bitmap size. Information used to relay available CCEs to a UE for determination of a virtual CORESET could be using a bitmap as described above, or alternatively, by specifying a starting position of a gap and a length for example (depending on the number of gaps in the overlapped region and their size). Figure 4 is a flowchart of a process, performed by a UE, according to an example. In block 400 UE 100 is configured with a 6G CORESET and Search Spaces, as described with reference to 501 of figure 1 for example. That is, in block 400, UE 100 is configured with an initial 6G CORESET (e.g. a CORESET0), initial Search Spaces (which it may have acquired from the 6G SIB1) and is aware of how and when the resources to determine a virtual CORESET will be transmitted. In block 403, UE 100 receives a configuration of pre-configured resources for indication of available CCEs for determination of a virtual CORESET. With reference to 401 of figure 1, for example, UE 100 is therefore made aware of the location and transmission type (e.g., periodic, aperiodic, both) of the pre-configured resources via, for example, SIB1. That is, UE 100 receives, from a network node 103, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of at least one set a of non-contiguous resources of a CORESET of a first radio access technology, wherein the at least one set of non-contiguous resources of the CORESET of the first radio access technology is interleaved with at least one set of noncontiguous resources of a CORESET of a second radio access technology. In block 405, it is determined whether the UE 100 has successfully decoded information from the pre-configured resources. If not, in block 409, UE 100 monitors the search space using the existing 6G CORESET and can perform blind decoding for DCIs as normal. That is, UE 100 can employ a 6G defined CORESET in association with its configured Search Spaces. Otherwise, in block 407, UE 100 can employ the decoded information for the determination of a virtual CORESET, which is used instead of the other configured 6G CORESETs for blind decoding the UE configured Search Spaces (block 413). Accordingly, better sharing of PDCCH resources between NR and 6G MRSS cells is provided, whilst enabling lower overheads for MRSS, with the potential to maintain NR spectral efficiency and boost 6G spectral efficiency. According to an example, there is better re-use of NR resources when NR device penetration is very low in comparison to 6G device penetration. Furthermore, complexity is minimized at both a UE and node (e.g., gNB) side. According to an example, an MRSS cell serving 6G and NR UEs can be configured with an overlapping Search Space. The CORESET may be different for 6G and NR UEs, but there can be some overlapping area to leverage efficiencies in scheduling PDCCH. As described above, a NR MRSS cell (105) can inform a 6G MRSS cell (103) of its CORESET and Search Space configurations per slot. For deployment scenarios where NR and 6G are deployed on separate DU’s, this information can be semi-statically exchanged via, e.g., an Xn interface since it is not expected to dynamically vary. A NR scheduler can perform PDCCH scheduling for NR UEs, and can inform a 6G scheduler about CCEs it plans to schedule for NR UEs in a slot x. In an example, a 6G PDCCH scheduler can determine a virtual CORESET based on the 6G Search Space and the unused NR CCES within the 6G Search Space. The virtual CORESET can be composed by aggregating all the available CCEs for 6G UEs in a contiguous manner, whereby to for a set of logically contiguous CORESET resources. A 6G PDCCH scheduler can perform PDCCH allocations for slot x for 6G UEs based on this virtual CORESET, including interleaving if required, and can inform 6GUEs about the resources employed in the virtual CORESET via a preconfigured set of resources. The preconfigured set of resources could be provided via, e.g., 6G SIB1. A 6G SIB1 may not employ the virtual CORESET and, given its transmission pattern is well established, resources for a 6G SIB1 could be agreed to be semi-statically reserved between NR and 6G cells (e.g., via Xn for sperate DU scenario). In an example, the set of resources could be in the same slot as scheduling information for the slot (slot x) or in a previous slot (slot x-n, with n=l for example). If the set of resources is in the same slot as the scheduling information, it could be allocated above, or below CORESET or outside symbols employed for the CORESET. The preconfigured resources used to indicate to the UE 100 information to compose a virtual CORESET can impose an additional overhead, but it can be more than compensated for by the gains of sharing CCEs between NR and 6G. In an example, UE 100 receives a pre-configuration of resources via which it can determine how to compose a virtual CORESET within the CORESET it is configured with. These preconfigured resources can be obtained via SIB1 for example. In an example, the pre-configuration includes the location of the resources in time and frequency with respect to a slot(s) where the UE may be scheduled. UE 100 can decode the pre-configured resources to determine the CCEs which it should employ to determine the virtual CORESET. If UE 100 successfully decodes the pre-configured resources with an indication of available CCEs, UE 100 can employ a virtual CORESET for blind decodes within its configured Search Spaces. If the UE 100 cannot decode the preconfigured resources with the indication of available CCE’s, the UE 100 considers all CCEs as available for 6G. 6G PDCCH DMRS mapping can be based on the 6G Virtual CORESET and the 6G UE could employ NR and 6G DMRS PDCCH for channel estimation. Examples in the present disclosure can be provided as methods, systems or machine-readable instructions, such as any combination of software, hardware, firmware or the like. Such machine-readable instructions may be included on a computer readable storage medium (including but not limited to disc storage, CD-ROM, optical storage, etc.) having computer readable program codes therein or thereon. The present disclosure is described with reference to flow charts and / or block diagrams of the method, devices and systems according to examples of the present disclosure. Although the flow diagrams described above show a specific order of execution, the order of execution may differ from that which is depicted. Blocks described in relation to one flow chart may be combined with those of another flow chart. In some examples, some blocks of the flow diagrams may not be necessary and / or additional blocks may be added. It shall be understood that each flow and / or block in the flow charts and / or block diagrams, as well as combinations of the flows and / or diagrams in the flow charts and / or block diagrams can be realized by machine readable instructions. The machine-readable instructions may, for example, be executed by a machine such as a general-purpose computer, a platform comprising user equipment such as a smart device, e.g., a smart phone, a special purpose computer, an embedded processor or processors of other programmable data processing devices to realize the functions described in the description and diagrams. In particular, a processor or processing apparatus may execute the machine-readable instructions. Thus, modules of apparatus may be implemented by a processor executing machine readable instructions stored in a memory, or a processor operating in accordance with instructions embedded in logic circuitry. The term 'processor' is to be interpreted broadly to include a CPU, processing unit, ASIC, logic unit, or programmable gate set etc. The methods and modules may all be performed by a single processor or divided amongst several processors. Such machine-readable instructions may also be stored in a computer readable storage that can guide the computer or other programmable data processing devices to operate in a specific mode. For example, the instructions may be provided on a non-transitory computer readable storage medium encoded with instructions, executable by a processor. Figure 5 is a schematic representation of a machine according to an example. The machine 500 can be, e.g., a system or apparatus, network node, user equipment, or parts thereof. The machine 500 comprises a processor 503, and a memory 505 to store instructions 502, executable by the processor 503. The machine comprises a storage 509 that can be used to store data 511 representing, e.g., configuration information, resources, virtual CORESET information, pre-configuration resources and so on. In an example, the instructions 507, executable by the processor 503, can cause the machine 500 (e.g., a UE 100) to receive, from a network node (e.g., node 103), information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of at least one set of non-contiguous resources of a CORESET of a first radio access technology, wherein the at least one set of noncontiguous resources of the CORESET of the first radio access technology is interleaved with at least one set of non-contiguous resources of a CORESET of a second radio access technology, and compose, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of at least the set of non-contiguous resources of the CORESET of the first radio access technology. In an example, the instructions 507, executable by the processor 503, can cause the machine 500 (e.g., a node 103) to receive, from a network node of a second RAT (e.g., node 105), information comprising an indication of a configured set of resources for use by the network node of the second RAT, determine, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus, and transmit, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus. In an example, the instructions 507, executable by the processor 503, can cause the machine 500 (e.g., a node 105) to transmit, to a network node of a first RAT (e.g., node 103), information comprising an indication of a configured set of resources for use by the apparatus, and receive, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for a set of logically contiguous CORESET resources for the network node of the first RAT. Accordingly, the machine 500 can implement a method for efficient usage of PDCCH resources in MRSS cells on the basis of the establishment of a virtual CORESET for 6G UEs. Such machine-readable instructions may also be loaded onto a computer or other programmable data processing devices, so that the computer or other programmable data processing devices perform a series of operations to produce computer-implemented processing, thus the instructions executed on the computer, or other programmable devices provide an operation for realizing functions specified by flow(s) in the flow charts and / or block(s) in the block diagrams. Further, the teachings herein may be implemented in the form of a computer or software product, such as a non-transitory machine-readable storage medium, the computer software or product being stored in a storage medium and comprising a plurality of instructions, e.g., machine readable instructions, for making a computer device implement the methods recited in the examples of the present disclosure. In some examples, some methods can be performed in a cloud-computing or networkbased environment. Cloud-computing environments may provide various services and applications via the Internet. These cloud-based services (e.g., software as a service, platform as a service, infrastructure as a service, etc.) may be accessible through a web browser or other remote interface of the user equipment for example. Various functions described herein may be provided through a remote desktop environment or any other cloud-based computing environment. A first option of the present disclosure provides apparatuses, methods and computer programs as described below. There is provided an apparatus for user equipment, comprising means for receiving, from a network node, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology, and means for composing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the apparatus can further comprise means for monitoring a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus. In an embodiment, the set of logically contiguous CORESET resources comprise a virtual CORESET that comprises an aggregation of available CCEs for, e.g., 6G UEs in a contiguous manner, thereby enabling a sharing of CCEs between, e.g., NR and 6G. In an embodiment, the apparatus can further comprise means for blind decoding data received at the apparatus from the node using the set of logically contiguous CORESET resources. The network node can be a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources can be derived for sixth generation wireless, 6G, communications. The means for receiving, from the network node, can be configured to receive, from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and the means for composing can be configured to compose the set of logically contiguous CORESET resources on the basis of the mapping information. In some embodiments, the means for receiving, from the network node, can be configured to receive the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. The means for receiving, from the network node, can be configured to receive a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. The means for receiving, from the network node, can comprise means for receiving, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information can be proportional to a number of non-contiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. The information comprising the time and frequency location of the CORESET resource configuration information can be located within frequency resources configured for the CORESET of the first radio access technology, or within time domain or frequency resources prior to the CORESET of the first radio access technology, or in time domain resources contiguous to the CORESET of the first radio access technology, or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. The apparatus can further comprise means for using, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. There is also provided an apparatus for a network node of a first radio access technology, RAT, the apparatus comprising means for receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT, means for determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus, and means for transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus. In an implementation of the second aspect, the first RAT can comprise a sixth generation wireless, 6G, RAT, and the second RAT can comprise a fifth generation wireless, 5G, RAT. In an embodiment, the apparatus can further comprise means for receiving from the network node of the second RAT, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus. The apparatus can further comprise means for receiving, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources. The apparatus can further comprise means for determining a size of the logically contiguous CORESET resources for the CORESET resource configuration information. The means for receiving, from the network node of the second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT, can comprise means for receiving, from the network node of the second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. The apparatus can transmit the CORESET resource configuration information using a System Information Block message, or Master Information Block message. In an embodiment, the apparatus can further comprise means for providing, to user equipment, information comprising a time and frequency location of the CORESET resource configuration information, wherein the time and frequency location of the CORESET resource configuration information is located within frequency resources configured for the CORESET of the first radio access technology, or within time domain or frequency resources prior to the CORESET of the first radio access technology, or in time domain resources contiguous to the CORESET of the first radio access technology, or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. The apparatus can be configured for communication with the network node of the second RAT using an inter node interface. The apparatus can be configured for communication with the network node of the second RAT using an internal interface. There is also provided an apparatus for a network node of a second radio access technology, RAT, the apparatus comprising means for transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus, and means for receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing resources available for a set of logically contiguous CORESET resources for the network node of the first RAT. In an embodiment, the apparatus can consider the resources available for the set of logically contiguous CORESET resources for the network node of the first RAT as at least one of the following: semi-statically reserved or protected resources. The apparatus can further comprise means for transmitting, to the network node of the first RAT, dynamic information representing an indication of transmitted resources which are part of overlapping CORESET resources. The means for transmitting, to the network node of the first RAT, information comprising an indication of a configured set of resources for use by the apparatus, can comprise means for transmitting, to the network node of the first RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the apparatus can transmit the CORESET resource configuration information using a System Information Block message, or Master Information Block message. The first RAT can comprise a sixth generation wireless, 6G, RAT, and the second RAT can comprise a fifth generation wireless, 5G, RAT. The apparatus can communicate with the network node of the first RAT using an inter node interface. The apparatus can communicate with the network node of the first RAT using an internal interface. A first option also covers methods as provided below. Methods may be implemented by computer program code executed on a process of the apparatus for the user equipment. Accordingly, there are provide computer program products and computer program distribution media for executing the methods. There is provided a method comprising: receiving, by user equipment from a network node, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and composing, by the user equipment on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the method comprises monitoring a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus. In an embodiment, the method comprises blind decoding data received at the apparatus from the node using the set of logically contiguous CORESET resources. In an embodiment, the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications. In an embodiment, the receiving, from the network node, comprises receiving, from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and the the set of logically contiguous CORESET resources is composed on the basis of the mapping information. In an embodiment, the mapping information is received in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, a pre-configuration of time-frequency resources of the mapping information is received by the user equipment before receiving the mapping information. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is received via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. There is also provided a method comprising: receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT, determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus, and transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus. In an embodiment, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus is received from the network node of the second RAT. In an embodiment, the method further comprises receiving, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources. In an embodiment, the method further comprises determining a size of the logically contiguous CORESET resources for the CORESET resource configuration information. In an embodiment, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT is received from the network node of the second RAT. In an embodiment, the CORESET resource configuration information is transmitted to the user equipment using a System Information Block message, or Master Information Block message. In an embodiment, the method further comprises providing, to user equipment, information comprising a time and frequency location of the CORESET resource configuration information, wherein the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. A second option of the present disclosure provides apparatuses, methods and computer programs as described below. According to an aspect of the second option, there is provided an apparatus for user equipment, comprising: means for receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and means for composing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the apparatus further comprises means for monitoring a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus. In an embodiment, the apparatus further comprises means for blind decoding data received at the apparatus from the node using the set of logically contiguous CORESET resources. In an embodiment, the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications. In an embodiment, the means for receiving, from the network node, are configured to receive, from the network node, mapping information indicating how to map the noncontiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and wherein the means for composing are configured to compose the set of logically contiguous CORESET resources on the basis of the mapping information. In an embodiment, the means for receiving, from the network node, are configured to receive the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the means for receiving, from the network node, are configured to receive a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. In an embodiment, the means for receiving, from the network node, comprises means for receiving, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the apparatus further comprises means for using, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. According to another aspect of the second option, there is provided an apparatus for a network node of a first radio access technology, RAT, the apparatus comprising: means for receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT; means for determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; means for transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus; means for operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; and means for broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET. In an embodiment, the apparatus further comprises means for receiving from the network node of the second RAT, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus. In an embodiment, the apparatus further comprises means for receiving, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources. In an embodiment, the apparatus further comprises means for determining a size of the logically contiguous CORESET resources for the CORESET resource configuration information. In an embodiment, the means for receiving, from the network node of the second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT, comprises means for receiving, from the network node of the second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the apparatus is configured to broadcast the information comprising the time and frequency location of the set of non-contiguous physical resources of the CORESET in a System Information Block message, or Master Information Block message. In an embodiment, the time and frequency location of the set of non-contiguous physical resources of the CORESET is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. In an embodiment, the apparatus is configured for communication with the network node of the second RAT using an inter node interface. In an embodiment, the apparatus is configured for communication with the network node of the second RAT using an internal interface. According to another aspect of the second option, there is provided an apparatus for a network node of a second radio access technology, RAT, the apparatus comprising: means for transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus; means for receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of non-contiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; and means for operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus. In an embodiment, the apparatus considers the resources available for the set of logically contiguous CORESET resources for the network node of the first RAT as at least one of the following: semi-statically reserved or protected resources. In an embodiment, the apparatus further comprises means for transmitting, to the network node of the first RAT, dynamic information representing an indication of transmitted resources which are part of overlapping CORESET resources. In an embodiment, the means for transmitting, to the network node of the first RAT, information comprising an indication of a configured set of resources for use by the apparatus, comprises means for transmitting, to the network node of the first RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the apparatus is configured to transmit the CORESET resource configuration information using a System Information Block message, or Master Information Block message. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. In an embodiment, the apparatus is configured for communication with the network node of the first RAT using an inter node interface. In an embodiment, the apparatus is configured for communication with the network node of the first RAT using an internal interface. According to another aspect of the second option, there is provided a method comprising: receiving, by user equipment from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and composing, by the user equipment on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the noncontiguous resources of the CORESET of the first radio access technology. In an embodiment, the user equipment monitors a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus. In an embodiment, the user equipment further performs blind decoding data received at the user equipment from the network node using the set of logically contiguous CORESET resources. In an embodiment, the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications. In an embodiment, the user equipment receives, from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and composes the set of logically contiguous CORESET resources on the basis of the mapping information. In an embodiment, the user equipment receives the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the user equipment receives a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. In an embodiment, the user equipment receives, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the user equipment uses, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. According to another aspect of the second option, there is provided a method for a network node of a first radio access technology, RAT, the method comprising: receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT; determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus; means for operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; and broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET. In an embodiment, the network node of the first RAT receives from the network node of the second RAT, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus. In an embodiment, the network node of the first RAT receives, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources. In an embodiment, the network node of the first RAT determines a size of the logically contiguous CORESET resources for the CORESET resource configuration information. In an embodiment, the network node of the first RAT receives, from the network node of the second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the network node of the first RAT broadcasts the information comprising the time and frequency location of the set of non-contiguous physical resources of the CORESET in a System Information Block message, or Master Information Block message. In an embodiment, the time and frequency location of the set of non-contiguous physical resources of the CORESET is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. According to another aspect of the second option, there is provided a method for a network node of a second radio access technology, RAT, the method comprising: transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus; receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of noncontiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; and operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus. In an embodiment, the network node of the second RAT considers the resources available for the set of logically contiguous CORESET resources for the network node of the first RAT as at least one of the following: semi-statically reserved or protected resources. In an embodiment, the network node of the second RAT transmits, to the network node of the first RAT, dynamic information representing an indication of transmitted resources which are part of overlapping CORESET resources. In an embodiment, the network node of the second RAT transmits, to the network node of the first RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT. In an embodiment, the network node of the second RAT transmits the CORESET resource configuration information using a System Information Block message, or Master Information Block message. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. According to an aspect of the second option, there is provided a computer program comprising instructions, which, when executed by an apparatus for user equipment, cause the apparatus to perform at least the following: receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; and composing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology. According to an aspect of the second option, there is provided a computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following: receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT; determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus; operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; and broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET. According to an aspect of the second option, there is provided a computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following: transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus; receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of noncontiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; and operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus. A third option of the present disclosure provides apparatuses, methods and computer programs as described below. According to an aspect of the third option, there is provided an apparatus for user equipment, comprising: means for receiving, from a network node, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; means for receiving, from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, means for composing the set of logically contiguous CORESET resources on the basis of the mapping information; and means for configuring, based on the received information, at least one CORESET search space in the non-contiguous resources of the CORESET of the first radio access technology, and for performing blind decoding of signals received in the at least one CORESET search space in order to find scheduling information addressed to the user equipment. In an embodiment, the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications. In an embodiment, the means for receiving, from the network node, are configured to receive the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the means for receiving, from the network node, are configured to receive a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. In an embodiment, the means for receiving, from the network node, comprises means for receiving, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located: within frequency resources configured for the CORESET of the first radio access technology; or within time domain or frequency resources prior to the CORESET of the first radio access technology; or in time domain resources contiguous to the CORESET of the first radio access technology; or in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the apparatus further comprises means for using, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. According to another aspect of the third option, there is provided an apparatus for a network node of a first radio access technology, RAT, the apparatus comprising: means for receiving, from a network node of a second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT; means for determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; and means for transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of physical control channel resources to be reserved for the apparatus and the first RAT; means for broadcasting, to user equipment, information comprising a time and frequency location of the set of physical control channel resources and at least one CORESET search space configuration on the set of physical control channel resources; means for receiving, from the network node of the second RAT, information representing an indication of physical resources reserved for a CORESET of the second RAT; means for determining, based on the received information, to map the set of logically contiguous CORESET resources to a set of non-contiguous resources of a CORESET of a first RAT; means for transmitting, to the user equipment, mapping information indicating how to map the non-contiguous resources of the CORESET of the first RAT to the set of logically contiguous CORESET resources; and means for transmitting, to the user equipment, scheduling information in a search space using the non-contiguous resources of the CORESET of the first RAT. In an embodiment, the time and frequency location of the CORESET resource configuration information is located within frequency resources configured for the CORESET of the first radio access technology. In an embodiment, the time and frequency location of the CORESET resource configuration information is located within time domain or frequency resources prior to the CORESET of the first radio access technology. In an embodiment, the time and frequency location of the CORESET resource configuration information is located in time domain resources contiguous to the CORESET of the first radio access technology. In an embodiment, the time and frequency location of the CORESET resource configuration information is located in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. According to another aspect of the third option, there is provided a method comprising: receiving, by user equipment from a network node, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; receiving, by the user equipment from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources; composing, by the user equipment, the set of logically contiguous CORESET resources on the basis of the mapping information; and configuring, by the user equipment based on the received information, at least one CORESET search space in the non-contiguous resources of the CORESET of the first radio access technology, and for performing blind decoding of signals received in the at least one CORESET search space in order to find scheduling information addressed to the user equipment. In an embodiment, the user equipment receives the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the user equipment receives a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information. In an embodiment, the user equipment receives, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message. In an embodiment, a number of bits in the information is proportional to a number of noncontiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located within frequency resources configured for the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located within time domain or frequency resources prior to the CORESET of the first radio access technology In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located in time domain resources contiguous to the CORESET of the first radio access technology. In an embodiment, the information comprising the time and frequency location of the CORESET resource configuration information is located in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the method further comprising using, by the user equipment on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node. According to another aspect of the third option, there is provided a method for a network node of a first radio access technology, RAT, the method comprising: receiving, from a network node of a second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT; determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; and transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of physical control channel resources to be reserved for the apparatus and the first RAT; broadcasting, to user equipment, information comprising a time and frequency location of the set of physical control channel resources and at least one CORESET search space configuration on the set of physical control channel resources; receiving, from the network node of the second RAT, information representing an indication of physical resources reserved for a CORESET of the second RAT; determining, based on the received information, to map the set of logically contiguous CORESET resources to a set of non-contiguous resources of a CORESET of a first RAT; transmitting, to the user equipment, mapping information indicating how to map the noncontiguous resources of the CORESET of the first RAT to the set of logically contiguous CORESET resources; and transmitting, to the user equipment, scheduling information in a search space using the non-contiguous resources of the CORESET of the first RAT. In an embodiment, the time and frequency location of the CORESET resource configuration information is located within frequency resources configured for the CORESET of the first radio access technology. In an embodiment, the time and frequency location of the CORESET resource configuration information is located within time domain or frequency resources prior to the CORESET of the first radio access technology. In an embodiment, the time and frequency location of the CORESET resource configuration information is located in time domain resources contiguous to the CORESET of the first radio access technology. In an embodiment, the time and frequency location of the CORESET resource configuration information is located in the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology. In an embodiment, the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT. According to another aspect of the third option, there is provided a computer program comprising instructions, which, when executed by an apparatus for user equipment, cause the apparatus to perform at least the following: receiving, from a network node, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; receiving, from the network node, mapping information indicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, composing the set of logically contiguous CORESET resources on the basis of the mapping information; and configuring, based on the received information, at least one CORESET search space in the non-contiguous resources of the CORESET of the first radio access technology, and for performing blind decoding of signals received in the at least one CORESET search space in order to find scheduling information addressed to the user equipment. According to another aspect of the third option, there is provided a computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following: receiving, from a network node of a second RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT; determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus; and transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of physical control channel resources to be reserved for the apparatus and the first RAT; broadcasting, to user equipment, information comprising a time and frequency location of the set of physical control channel resources and at least one CORESET search space configuration on the set of physical control channel resources; receiving, from the network node of the second RAT, information representing an indication of physical resources reserved for a CORESET of the second RAT; determining, based on the received information, to map the set of logically contiguous CORESET resources to a set of non-contiguous resources of a CORESET of a first RAT; transmitting, to the user equipment, mapping information indicating how to map the non-contiguous resources of the CORESET of the first RAT to the set of logically contiguous CORESET resources; and transmitting, to the user equipment, scheduling information in a search space using the non-contiguous resources of the CORESET of the first RAT. While various embodiments have been described and / or illustrated herein in the context of fully functional computing systems, one or more of these exemplary embodiments may be distributed as a program product in a variety of forms, regardless of the particular type of computer-readable-storage media used to actually carry out the distribution. The embodiments disclosed herein may also be implemented using software modules that perform certain tasks. These software modules may include script, batch, or other executable files that may be stored on a computer-readable storage medium or in a computing system. In some embodiments, these software modules may configure a computing system to perform one or more of the exemplary embodiments disclosed herein. In addition, one or more of the modules described herein may transform data, physical devices, and / or representations of physical devices from one form to another. The preceding description has been provided to enable others skilled in the art to best utilize various aspects of the exemplary embodiments disclosed herein. This exemplary 5 description is not intended to be exhaustive or to be limited to any precise form disclosed. Many modifications and variations are possible without departing from the spirit and scope of the instant disclosure. The embodiments disclosed herein should be considered in all respects illustrative and not restrictive. Reference should be made to the appended claims and their equivalents in determining the scope of the instant disclosure.

Claims

1. An apparatus for user equipment, comprising:means for receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; andmeans for composing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the noncontiguous resources of the CORESET of the first radio access technology.

2. The apparatus of claim 1, further comprising:means for monitoring a search space in the set of logically contiguous CORESET resources for a scheduling message for the apparatus.

3. The apparatus of claim 1 or 2, further comprising:means for blind decoding data received at the apparatus from the node using the set of logically contiguous CORESET resources.

4. The apparatus of any preceding claim, wherein the network node is a Multi-Radio-Access-Technology Spectrum Sharing, MRSS, node and the logically contiguous CORESET resources are derived for sixth generation wireless, 6G, communications.

5. The apparatus of any preceding claim, wherein the means for receiving, from the network node, are configured to receive, from the network node, mapping informationindicating how to map the non-contiguous resources of the CORESET of the first radio access technology to the set of logically contiguous CORESET resources, and wherein the means for composing are configured to compose the set of logically contiguous CORESET resources on the basis of the mapping information.

6. The apparatus of claim 5, wherein the means for receiving, from the network node,are configured to receive the mapping information in the same time slot but in a different symbol than that of the non-contiguous resources of the CORESET of the first radio access technology.

7. The apparatus of claim 5 or 6, wherein the means for receiving, from the network node, are configured to receive a pre-configuration of time-frequency resources of the mapping information before receiving the mapping information.

8. The apparatus of any preceding claim, wherein the means for receiving, from the network node, comprises means for receiving, from the network node, the information comprising the time and frequency location of the CORESET resource configuration information via a System Information Block message or a Master Information Block message.

9. The apparatus of any preceding claim, wherein a number of bits in the information is proportional to a number of non-contiguous subsets of resources in the non-contiguous resources of the CORESET of the first radio access technology.

10. The apparatus of any preceding claim, wherein the information comprising the time and frequency location of the CORESET resource configuration information is located:within frequency resources configured for the CORESET of the first radio access technology; orwithin time domain or frequency resources prior to the CORESET of the first radio access technology; orin time domain resources contiguous to the CORESET of the first radio access technology; orin the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology.

11. The apparatus of any preceding claim, further comprising:means for using, on the basis of a failure to decode the CORESET resource configuration information, a configured CORESET of the network node.

12. An apparatus for a network node of a first radio access technology, RAT, the apparatus comprising:means for receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT;means for determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus;means for transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus;means for operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; andmeans for broadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the CORESET.

13. The apparatus of claim 12, further comprising:means for receiving from the network node of the second RAT, information representing an indication of a set of semi-statically reserved resources available for the set of logically contiguous CORESET resources for the apparatus.

14. The apparatus of claim 12 or 13, further comprising:means for receiving, from the network node of the second RAT, dynamic information representing an indication of transmitted resources which are part of the overlapping CORESET resources.

15. The apparatus of any of claims 12 to 14, further comprising:means for determining a size of the logically contiguous CORESET resources for the CORESET resource configuration information.

16. The apparatus of any of claims 12 to 15, wherein the means for receiving, from the network node of the second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT, comprises means for receiving, from the network node of the second RAT, information comprisingCORESET and Search Space configurations employed for use by the network node of the second RAT.

17. The apparatus of any of claims 12 to 16, wherein the apparatus is configured to broadcast the information comprising the time and frequency location of the set of noncontiguous physical resources of the CORESET in a System Information Block message, or Master Information Block message.

18. The apparatus of any of claims 12 to 17, wherein the time and frequency location of the set of non-contiguous physical resources of the CORESET is located:within frequency resources configured for the CORESET of the first radio access technology; orwithin time domain or frequency resources prior to the CORESET of the first radio access technology; orin time domain resources contiguous to the CORESET of the first radio access technology; orin the same symbol as the CORESET of the first radio access technology but in frequency resources outside the CORESET of the first radio access technology.

19. The apparatus of any of claims 12 to 18, wherein the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT.

20. The apparatus of any of claims 12 to 19, wherein the apparatus is configured for communication with the network node of the second RAT using an inter node interface.

21. The apparatus of any of claims 12 to 19, wherein the apparatus is configured for communication with the network node of the second RAT using an internal interface.

22. An apparatus for a network node of a second radio access technology, RAT, the apparatus comprising:means for transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus;means for receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of non-contiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; andmeans for operating at least one cell of the second RAT by using the configured set of resources for use by the apparatus.

23. The apparatus of claim 22, wherein the apparatus considers the resources available for the set of logically contiguous CORESET resources for the network node of the first RAT as at least one of the following: semi-statically reserved or protected resources.

24. The apparatus of claim 22 or 23, further comprising:means for transmitting, to the network node of the first RAT, dynamic information representing an indication of transmitted resources which are part of overlapping CORESET resources.

25. The apparatus of any of claims 22 to 24, wherein the means for transmitting, to the network node of the first RAT, information comprising an indication of a configured set of resources for use by the apparatus, comprises means for transmitting, to the networknode of the first RAT, information comprising CORESET and Search Space configurations employed for use by the network node of the second RAT.

26. The apparatus of any of claims 22 to 25, wherein the apparatus is configured to transmit the CORESET resource configuration information using a System Information Block message, or Master Information Block message.

27. The apparatus of any of claims 22 to 26, wherein the first RAT comprises a sixth generation wireless, 6G, RAT, and wherein the second RAT comprises a fifth generation wireless, 5G, RAT.

28. The apparatus of any of claims 22 to 27, wherein the apparatus is configured for communication with the network node of the first RAT using an inter node interface.

29. The apparatus of any of claims 22 to 27, wherein the apparatus is configured for communication with the network node of the first RAT using an internal interface.

30. A method comprising:receiving, by user equipment from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; andcomposing, by the user equipment on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology.

31. A computer program comprising instructions, which, when executed by an apparatus for user equipment, cause the apparatus to perform at least the following:receiving, from a network node on a broadcast channel, information comprising a time and frequency location of control resource set, CORESET, resource configuration information, wherein the CORESET resource configuration information comprises an indication of non-contiguous resources of a CORESET of a first radio access technology, wherein the non-contiguous resources of the CORESET of the first radio access technology are interleaved with at least one set of resources of a CORESET of a second radio access technology; andcomposing, on the basis of the CORESET resource configuration information, a set of logically contiguous CORESET resources on the basis of the non-contiguous resources of the CORESET of the first radio access technology.

32. A method comprising:receiving, by a network node of a first radio access technology, RAT, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT;determining, by the network node of the first RAT on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus;transmitting, by the network node of the first RAT to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprisesinformation representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus;operating, by the network node of the first RAT, at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; andbroadcasting, by the network node of the first RAT in the at least one cell of the first RAT, information comprising a time and frequency location of the set of noncontiguous physical resources of the CORESET.

33. A computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following:receiving, from a network node of a second RAT, information comprising an indication of a configured set of resources for use by the network node of the second RAT;determining, on the basis of the information, resources available for a set of logically contiguous CORESET resources for the apparatus;transmitting, to the network node of the second RAT, on the basis of the determined resources available for the set of logically contiguous CORESET resources for the apparatus, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of resources available for the set of logically contiguous CORESET resources for the apparatus;operating at least one cell of the first RAT by using the resources available for the set of logically contiguous CORESET resources for the apparatus, wherein the resources form a set of non-contiguous physical resources of a CORESET for the apparatus; andbroadcasting, in the at least one cell of the first RAT, information comprising a time and frequency location of the set of non-contiguous physical resources of the34. A method comprising:transmitting, to a network node of a first radio access technology, RAT, by a network node of a second RAT, information comprising an indication of a configured set of resources for use by the apparatus;receiving, by the network node of the second RAT from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of noncontiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; andoperating, by the network node of the second RAT, at least one cell of the second RAT by using the configured set of resources for use by the apparatus.

35. A computer program comprising instructions, which, when executed by an apparatus for a network node of a first radio access technology, RAT, cause the apparatus to perform at least the following:transmitting, to a network node of a first RAT, information comprising an indication of a configured set of resources for use by the apparatus;receiving, from the network node of the first RAT, CORESET resource configuration information, wherein the CORESET resource configuration information comprises information representing a set of non-contiguous physical resources available for a set of logically contiguous CORESET resources for the network node of the first RAT; andoperating at least one cell of the second RAT by using the configured set of resources for use by the apparatus.

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