Improvements to telecommunications systems and relating thereto

Abstract

The present disclosure relates to a communication method and system for integrating a network of a fifth generation (5G) communication system or a super 5G communication system supporting a higher data rate than a fourth generation (4G) system with an Internet of Things (IoT) technology. The present disclosure can be applied to smart services based on 5G communication technology and IoT-related technologies, such as smart homes, smart buildings, smart cities, smart cars, connected cars, health care, digital education, smart retail, security and safety services. A method for a user equipment (UE) to provide overheat assistance to a telecommunications network is disclosed, wherein the UE is arranged to provide overheat assistance in one of two modes, wherein: in a first mode, the UE reports details related to a first set of auxiliary parameters; and in a second mode, the UE reports details related to a second set of auxiliary parameters, wherein the settings of the first set of parameters depend on the settings of the second set of parameters.

Description

Technical Field

[0001] The present disclosure relates to problems associated with a user equipment (UE) providing information to a radio access network RAN ​​to assist the network in setting up a radio configuration. The assistance provided may be related to overheating in such a UE. On the other hand, the present disclosure also relates to improvements to and related to in-device coexistence (IDC). The present disclosure relates to fifth generation (5G) or new radio (NR) systems, and to networks beyond 5G and other systems and devices that may benefit from embodiments of the present disclosure. Background Art

[0002] In order to meet the increased demand for wireless data traffic since the deployment of the fourth generation (4G) communication system, efforts have been made to develop improved fifth generation (5G) or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also referred to as "beyond 4G networks" or "post-LTE systems."

[0003] Considering that 5G communication systems are implemented in higher frequency millimeter wave (mmWave) bands (e.g., 60 GHz bands) to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional multiple-input multiple-output (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are discussed in 5G communication systems.

[0004] In addition, in the 5G communication system, development of system network improvements is underway based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference cancellation, etc.

[0005] In 5G systems, hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coded modulation (ACM), as well as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0006] The Internet is a human-centered connectivity network in which humans generate and consume information, and is now developing towards the Internet of Things (IoT) in which distributed entities (such as things) exchange and process information without human intervention. The Internet of Everything (IoE) has emerged, in which IoT technology and big data processing technology are combined with cloud server connection. As IoT realizes the requirements for technical elements such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology" and "security technology", sensor networks, machine-to-machine (M2M) communication, machine type communication (MTC), etc. have been recently studied. Such an IoT environment can provide intelligent Internet technology services that create new value for human life by collecting and analyzing data generated between connected things. IoT can be applied to a variety of different fields, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart appliances, and advanced medical services through the integration and combination of existing information technology (IT) with various industrial applications.

[0007] At the same time, UEs are typically portable, battery-powered devices designed to be used by users while performing normal activities. Depending on the functions performed by the UE, the internal temperature of the UE may rise to undesirable levels. The increase in temperature may depend on the amount and / or type of activities performed by the UE. Summary of the invention

[0008]

Technical issues

[0009] In an LTE system, a UE can report that the UE is overheating and request the network to reduce the number of carrier components (CCs) and / or data rate according to a lower UE category, and in response, the network can adjust the UE's radio configuration so that its power consumption can be reduced. In addition, in an LTE system, a UE can report that it is experiencing in-device coexistence (IDC) issues for a specific frequency band or frequency band combination.

[0010] 5G systems differ from LTE systems in some respects. Therefore, the methods used in LTE are either not possible or not advisable.

[0011]

Technical solution

[0012] Embodiments of the present disclosure are intended to address the above-mentioned problems, particularly for a UE configured with EN-DC, i.e., dual connectivity with LTE (EURA) for a primary cell group (MCG) and NR for a secondary cell group (SCG), as well as other issues not specifically mentioned herein.

[0013] Another embodiment of the present disclosure is directed to solving the above-mentioned problems, and other problems not specifically mentioned herein, for a UE connected to LTE (e.g., mobile to NR or for EN-DC) or NR.

[0014]

Beneficial effects

[0015] According to the present disclosure, there are improvements to address or relate to overheating in a UE connected to at least one of LTE or NR. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For a better understanding of the present disclosure, and in order to show how embodiments of the present disclosure may be implemented, reference will now be made, by way of example only, to the attached schematic diagrams, in which:

[0017] Figure 1 The signaling related to overheating information in the first embodiment of the present disclosure is shown;

[0018] Figure 2a and 2b The invention shows the signaling of network control on overheat assistance reporting performed on the UE between the UE and the network in different options according to the operation mode according to an embodiment of the present disclosure;

[0019] Figure 3a and 3b The expansion of the list entries for LTE and NR are shown respectively;

[0020] Figure 4a and 4b The expansion of the configuration list entries of LTE and NR according to the embodiments of the present disclosure are respectively shown;

[0021] Figure 5a , 5b and 5c show the frequency ranges in which the UE is to report the IDC according to the prior art and according to an embodiment of the present disclosure;

[0022] Figure 6 Details related to signaling that allows additional ARFCNs to be configured for IDC reporting according to an embodiment of the present disclosure are shown;

[0023] Figure 7 shows details related to signaling that allows additional ARFCN and BW to be configured for IDC reporting according to an embodiment of the present disclosure; and

[0024] Figure 8 Message exchanges related to IDC reporting according to an embodiment of the present disclosure are shown.

[0025] Fig. 9 is a block diagram of a user equipment (UE) in a wireless communication system according to an embodiment of the present disclosure.

[0026] Fig.10 is a block diagram of a base station in a wireless communication system according to an embodiment of the present disclosure.

[0027] Throughout the drawings, like reference numerals will be understood to refer to like parts, components and structures. DETAILED DESCRIPTION

[0028] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of the various embodiments of the present disclosure as defined by the claims and their equivalents. The following description includes various specific details to assist in understanding, but these are to be considered exemplary only. Therefore, it will be appreciated by those of ordinary skill in the art that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and structures may be omitted for clarity and conciseness.

[0029] The terms and words used in the following description and claims are not limited to the bibliographic meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be clear to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustrative purposes only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0030] It should be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0031] In the following description, for the convenience of description, terms identifying access nodes, terms representing network entities, terms representing messages, terms representing interfaces between network entities, and terms representing various types of identification information have been shown. Therefore, the present disclosure is not limited to the following terms, and other terms representing objects with equivalent technical meanings may be used.

[0032] For the convenience of description, in the present disclosure, the terms and names defined in the Long Term Evolution (LTE) and New Radio (NR) standards of the Third Generation Partnership Project (hereinafter referred to as "3GPP") are used. However, the present disclosure is not limited to the terms and names, but can also be applied to systems conforming to other standards.

[0033] First, the terms used in this specification are defined.

[0034] In this specification, a radio bearer may include a data radio bearer (DRB) and a signaling radio bearer (SRB).

[0035] For example, a data radio bearer (DRB) provided in a wireless interface between a terminal and a base station is a path through which user plane data is forwarded. A signaling radio bearer (SRB) may be a path through which control plane data (such as a radio resource control (RRC) layer and a non-access stratum (NAS) control message) is forwarded.

[0036] In the present specification, a wireless communication system supported in a network on which a plurality of communication systems interwork may support interworking between heterogeneous technology bands (multi-RAT interworking).

[0037] For example, the radio access technology may be a new radio access network (new RAN) supporting all 4G radio access technologies (E-UTRA), radio access technologies evolved from 4G (Evolved E-UTRA), and 5G radio access technologies (New Radio (NR)).

[0038] In this specification, systems supporting the same or different communication networks can be basically divided into a terminal, a radio access network, and a plurality of core networks (CNs).

[0039] In this specification, the terminal may be an integrated terminal supporting all 4G radio access technologies (E-UTRA), radio access technologies evolved from 4G (Evolved E-UTRA), and 5G radio access technologies (New Radio (NR)).

[0040] In this specification, radio access network, base station and network node may be used as the same meaning. The base station may include a 5G base station (or new radio base station or gNB) using 5G radio access technology (new radio (NR)), a 4G base station (LTE-eNB) using 4G radio access technology (E-UTRA), and a base station (eLTE eNB) using a radio access technology evolved from 4G (evolved E-UTRA). In addition, the base station (eLTE eNB) may support both 4G radio access technology and 5G radio access technology.

[0041] According to the present specification, a wireless communication system in which a terminal can perform communication with at least one cell associated with a first base station and at least one cell associated with a second base station can support dual connectivity between the first base station and the second base station, and the first base station and the second base station support heterogeneous or homogeneous radio access technologies.

[0042] For example, the dual connectivity disclosed in this specification may include a case where both the first base station and the second base station involve dual connectivity with respect to a 4G system, or a case where the first base station involves a 4G system and the second base station supports an NR system (E-UTRA-NR dual connectivity, EN-DC). In addition, even if the wireless communication system disclosed in this specification involves an EN-DC system, the system is not necessarily limited thereto, but may also include a multi-radio dual connectivity (MR-DC) system.

[0043] In the EN-DC system disclosed in this specification, the main base station can be used as the same meaning as the master base station, the master node (MN) or the master eNB (MeNB). The sub-base station can be used as the same meaning as the secondary base station, the secondary node (SN) or the secondary gNB (SgNB).

[0044] In the EN-DC system disclosed in this specification, the terminal can be connected to one eNB operating as a primary base station and one en-gNB operating as a secondary base station.

[0045] The eNB can be connected to the EPC through the S1 interface and can be connected to the en-gNB through the X2 interface, and the en-gNB can be connected to the EPC through the S1. The en-gNB can be connected to the EPC through the X2-U interface or the S1-U interface.

[0046] In homogeneous or heterogeneous networks supporting small cell evolution, there are various requirements related to mobility robustness, increased signaling load due to frequent handovers, improving per-user throughput, system capacity, etc.

[0047] Dual Connectivity (DC) can mean control and data disconnection. For example, while providing high-speed data connectivity through small cells, control signaling for mobility is provided through macro cells.

[0048] Furthermore, disconnection between downlink and uplink and connection between downlink and uplink are provided through other cells.

[0049] In dual connectivity, a UE may be connected to one primary node (MN) and one secondary node (SN).

[0050] In addition, DC in which carrier aggregation (CA) is configured refers to an operation mode of a UE in an RRC connected state, and it consists of a primary cell group and a secondary cell group.

[0051] Here, "cell group" refers to a group of serving cells related to a primary base station or a secondary base station in dual connectivity.

[0052] A "Master Cell Group (MCG)" is a group of serving cells associated with a master base station, and includes a primary cell (PCell) and optionally one or more secondary cells (SCells) in dual connectivity.

[0053] A "Secondary Cell Group (SCG)" refers to a group of serving cells related to a secondary base station, including a primary SCell (PSCell) and one or more optional SCells.

[0054] Here, the "cell" described below should be distinguished from the "cell" which is a general area covered by a base station. That is, the cell means a combination of downlink and selective uplink resources.

[0055] The MCG bearer is a radio protocol located in the primary base station to use only resources provided by the primary base station in dual connectivity, and the SCG bearer is a radio protocol located in the secondary base station to use only resources provided by the secondary base station in dual connectivity.

[0056] Furthermore, the split bearer is a radio protocol located in both the primary base station and the secondary base station to use all resources provided by the primary base station and the secondary base station in dual connectivity.

[0057] NR or 5G radio networks operate over an extended frequency range compared to LTE networks. In particular, NR operates in two different ranges, referred to as Frequency Range 1 (FR1) and Frequency Range 2 (FR2). When reference is made to a lowercase "frequency range" in this application, it is intended to refer to the frequency range over which a device may operate. References to FR1 or FR2 are to be interpreted according to their definitions in the applicable standards. Currently, FR1 is defined as spanning 450Mhz-7.125GHz, and FR2 is defined as spanning 24.25GHz-52.6GHz.

[0058] Here, UE refers to a mobile handset, a smart phone, etc., and RAN refers to different situations, including a network using a fifth generation (5G) or new radio (NR) system or higher system, but other situations are not limited thereto, and other systems and devices can benefit from the embodiments of the present disclosure. Therefore, the present disclosure is not limited to the following terms, and other terms representing objects with equivalent technical meanings may be used.

[0059] The present disclosure relates to problems related to overheating in user equipment (UE) (such as mobile handsets, smart phones, etc.). On the other hand, the present disclosure also relates to improvements to or related to in-device coexistence (IDC). The present disclosure relates to fifth generation (5G) or new radio (NR) systems, and to networks beyond 5G and other systems and devices that can benefit from embodiments of the present disclosure. Therefore, the present disclosure is not limited to the following terms, and other terms representing targets with equivalent technical meanings may be used.

[0060] In LTE systems, a UE can report that the UE is overheating and request the network to reduce the number of carrier components (CCs) and / or data rate according to a lower UE category, and in response, the network can adjust the UE's radio configuration so that its power consumption can be reduced.

[0061] 5G systems differ from LTE systems in some respects. For example, in 5G, there is no equivalent to "UE Class". In addition, two different frequency ranges are used in NR, each of which is typically supported by separate hardware. In addition, some NR bands include relatively large bandwidths, and the network can configure the UE to operate in a specific portion of the relevant band. Therefore, the methods used in LTE are either impossible or undesirable. Embodiments of the present disclosure are intended to address the above-mentioned problems, particularly for UEs configured with EN-DC, i.e., dual connectivity with LTE (EURA) for a primary cell group (MCG) and NR for a secondary cell group (SCG), as well as other issues not specifically mentioned herein.

[0062] In LTE systems, a UE is able to report that it encounters in-device coexistence (IDC) issues for a particular frequency band or frequency band combination. 5G systems differ from LTE in some respects. In particular, some frequency bands include relatively large bandwidths, and the network may configure the UE to operate in a specific portion of the relevant frequency band. Therefore, using the LTE approach is not desirable. Embodiments of the present disclosure are intended to solve the above-mentioned problems, as well as other problems not specifically mentioned herein, for UEs connected to LTE (e.g., mobile to NR or for EN-DC) or NR.

[0063] According to the present disclosure, there is provided an apparatus and a method as set out in the accompanying claims. Further features of the present disclosure will be apparent from the dependent claims and the subsequent description.

[0064] According to a first aspect of the present disclosure, there is provided a method for a user equipment (UE) to provide overheat assistance to a telecommunications network, wherein the UE is arranged to provide overheat assistance in one of two modes, wherein: in the first mode, the UE reports details related to a first set of assistance parameters; and in the second mode, the UE reports details related to a second set of assistance parameters, wherein settings of the first set of parameters depend on settings of the second set of parameters.

[0065] In one embodiment, the first assistance parameter and the second set of assistance parameters are defined in different versions of a standard specification according to which the UE and the telecommunication network operate.

[0066] In one embodiment, the UE is in dual connectivity DC with the telecommunications network.

[0067] In one embodiment, the first set of auxiliary parameters relates to both primary and auxiliary connections, while the second set of parameters relates specifically to the auxiliary connection.

[0068] In one embodiment, the first set of parameters includes details related to reduced UE categories and reduced maximum number of component carriers, and the second set of parameters includes details of the maximum aggregate bandwidth BW and MIMO layers for each frequency range x (FRx).

[0069] In one embodiment, the UE utilizes the second mode only if the telecommunications network requests the second mode or indicates that the second mode is allowed.

[0070] In one embodiment, the network indication or request is indicated in a system information block, broadcast by the telecommunications network or indicated to the UE through dedicated signaling; wherein the UE indicates support for the function to inform the network that it can use dedicated signaling.

[0071] In one embodiment, the UE changes from the second mode to the first mode upon an explicit request from the network, when network control is accomplished through dedicated signaling, or in other cases when the NR secondary connection is released or when it is determined that the SIB indicates that the second mode is not allowed.

[0072] In one embodiment, if the UE changes from the first mode to the second mode or vice versa, the UE signals the previous value of the auxiliary parameter even if it has not changed.

[0073] According to a second aspect of the present disclosure, there is provided a UE operable to provide overheat assistance to a telecommunications network, wherein the UE is arranged to provide overheat assistance in one of two modes, wherein: in the first mode, the UE reports details related to a first set of assistance parameters; and in the second mode, the UE reports details related to a second set of assistance parameters, wherein the settings of the first set of parameters depend on the settings of the second set of parameters.

[0074] According to a third aspect of the present disclosure, there is provided a telecommunications network operable to signal a UE to provide overheat assistance in one of two modes, wherein: in a first mode, the UE reports details related to a first set of assistance parameters; and in a second mode, the UE reports details related to a second set of assistance parameters, wherein settings of the first set of parameters depend on settings of the second set of parameters.

[0075] According to a fourth aspect of the present disclosure, a system is provided, which includes the UE of the second aspect and the telecommunication network of the third aspect.

[0076] According to a fifth aspect of the present disclosure, there is provided a method for a user equipment UE to provide UE assistance related to reporting IDC issues regarding NR frequencies to a telecommunications network, wherein the UE is configured to report IDC issues regarding one or more parts of a frequency band, wherein: the network indicates each part of the frequency band for which an IDC report is requested by an ARFCN indicating a center frequency for reporting the IDC: the BW of the part can be explicitly signaled by the network, or determined by the UE.

[0077] In one embodiment, when determined by the UE, the BW of the portion may be the BW that the UE is currently configured to use, or may be a BW based on rules according to UE capabilities signaled to the network.

[0078] In another embodiment, the UE may additionally indicate the availability of early measurement results for NR frequencies through a new field in SetupComplete, ResumeComplete.

[0079] According to a sixth aspect of the present disclosure, a method of a telecommunication network is provided, wherein early measurement reporting is extended to cover NR frequencies; wherein an indication is provided by which the network can control how a UE reports availability of relevant measurement results and provide relevant measurement results.

[0080] In one embodiment, the telecommunications network indicates that it supports early measurement reporting for NR frequencies through a new field in the system information block SIB2.

[0081] In one embodiment, the UE additionally indicates the availability of early measurement results for NR frequencies through a new field in SetupComplete, ResumeComplete.

[0082] In a seventh aspect of the present disclosure, there is provided a method for use with a telecommunications network, the method involving signaling a list of multiple occasions, and for each occasion, signaling the same set of additional parameters for each entry of the list, and wherein a single list is used to signal the additional parameters.

[0083] In one embodiment, the size of the list may be the same as the size of each list occurrence, or such that it includes as many entries as all occurrences of the associated lists combined.

[0084] According to the present disclosure, there is provided an apparatus and a method as set out in the accompanying claims. Further features of the present disclosure will be apparent from the dependent claims and the subsequent description.

[0085] While certain preferred embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present disclosure as defined in the appended claims.

[0086] In a first embodiment, the UE provides assistance in one of the following two modes:

[0087] Mode 1 uses the legacy fields available in the defined signalling procedure;

[0088] Mode 2 also uses new fields defined accordingly.

[0089] Figure 1 A representation of the signal used for Overheat Assistance reporting by a UE in EN-DC, i.e. dual connected to an LTE (EURA) eNB acting as a master node and controlling a Master Cell Group (MCG) and an NR gNB acting as a secondary node and controlling a Secondary Cell Group (SCG) is shown. Overheat Assistance indicates the UE preference on how the UE wants the network to resolve overheating.

[0090] Figure 1 The signals exchanged between the UE 10, the master eNB 20 and the secondary gNB 30 are shown. In the first operation mode, referred to as Mode 1, the information reported by the UE in an overheat event uses only the legacy fields, namely reducedUE-category and reduceMaxCCs, as defined for the case where the UE is not configured for dual connectivity. Here the UE only sets the legacy fields and can therefore only indicate coarse / basic assistance information, for example it can request the network to reduce the total number of CCs, but cannot indicate its preference for the network to reduce the number of carriers in the MCG or SCG.

[0091] In the second operating mode, called Mode 2, the UE may report additional information in the event of overheating, namely using new fields indicating its preference for NR SCG. Overheating assistance for SCG includes the maximum number of component carriers CCs for the SCG and some new fields, namely a) maximum aggregated BW and b) MIMO layers. Only for these new fields related to preference for NR SCG, the UE can provide a value for each frequency range x (FRx), i.e. for the maximum number of CCs, the UE cannot provide a value for each FRx. Here, in Mode 2, the UE has the option of providing more refined assistance, such as requesting a reduction in the aggregated BW or MIMO layers of the NR serving cell in FR2. In such a case, the UE may or may not set the legacy field.

[0092] The value of the UE preference indicated by the legacy field may depend on the preference indicated by the new field for NR SCG. Therefore, UEs supporting Mode 2 should only apply this mode if the network also supports the corresponding new field. Figure 2a and 2b Two options for signaling between the UE 10 and the MeNB 20 are shown, by which the network can indicate to the UE that the new field for NR SCG used in Mode 2 above can be used.

[0093] exist Figure 2a In option a) shown, a field on broadcast (e.g. using system information block 2, SIB2) indicates that the network supports mode 2 (or a newer REL-16 field). This can be achieved by using, for example, an extended field enhOverheatENDC-Support in SIB2,

[0094] exist Figure 2b In option b) shown, the fields in otherConfig may be used, i.e. the network configures the UE to use the new fields to provide UE assistance for NR SCG, i.e. using mode 2. This can be achieved, for example, by extending the field overheatingAssistanceENDC in OtherConFig.

[0095] Since the network should only configure the UE to apply the functions it supports, this option requires corresponding UE capabilities, such as through the extended field enhOverheatENDC-Support in the LTE UE capabilities (1-bit indication, such as in IRAT-ParametersNR).

[0096] The mode (i.e. Mode 1 or Mode 2) to be used by the UE 10 may need to change at least upon setup / release of E-UTRAN New Radio - Dual Connectivity (EN-DC) and other events. Other such events are changing to / from a node supporting Mode 2.

[0097] Table 1 below shows different scenarios and the network options that can be used to indicate the available configuration options.

[0098] The three scenarios are setup / release of EN dual connectivity, moving to an enhanced node, and moving to a legacy node.

[0099] The network has two options regarding signaling the configuration: broadcast or dedicated signaling (see columns a) and b) below).

[0100]

[0101] Table 1

[0102] Note that for option b), the network controls the UE using explicit signaling, i.e., it configures mode 1 when EN-DC is released; configures mode 2 when EN-DC is set; and applies fullConfig to revert to mode 1 when changing to a legacy node. It should be noted that the network can actually indicate whether to report NR SCG overheat assistance, rather than configuring the mode to be used. That is, when the UE is configured to do so, this corresponds to mode 2 operation, and when the UE is configured not to report NR SCG overheat assistance (i.e., release NR SCG reporting), this corresponds to mode 1 operation.

[0103] For option a), the UE autonomously decides which mode to use. That is, the UE action corresponding to option a) is: the UE reverts to mode 1 when it obtains a SIBx indicating unsupported; or when EN-DC is released. The UE switches to mode 2 when: it obtains a SIBx indicating network support (field enhOverthermalENDC-Support) when in EN-DC; and EN-DC is set when SIBx indicates network support (field enhOverheatingENDC-Support).

[0104] UE options for option b): The UE reverts to Mode 1 upon reception of otherConfig (field overheatingAssistanceENDC) indicating Mode 1 / release Mode 2 or upon reception of fullConFig.

[0105] The UE switches to mode 2 when receiving otherConfig indicating mode 2 (setting of the field overheatingAssistanceENDC).

[0106] Option a) offers a slight advantage in that reverting to mode 1 when entering a legacy node does not require fullConfig, i.e. involves a full reset.

[0107] Embodiments of the present disclosure relate to assistance provided by the UE to the network when the mode changes. Legacy parameters are used for both modes. As mentioned above, the values ​​of the UE preferences indicated by these legacy fields may depend on the preferences indicated by the new fields used for the NR SCG. Therefore, it is important to clarify what assistance the UE should provide when the mode changes to ensure that the network correctly understands the UE status regarding overheating. This includes two aspects:

[0108] What should UE include in UE assistance?

[0109] When should the UE initiate the transmission of overheat assistance?

[0110] Whenever the UE provides UE assistance, it shall signal all UE assistance parameters. For example, when moving to a MeNB that supports NRSCG overheat assistance, the UE shall include the legacy overheat parameter even if the value will be the same as its previously indicated value. This also means that the network shall assume that for parameters that are no longer signaled, any previously indicated value will be cleared. Such operation can be illustrated by example:

[0111] At T1, the UE connected to the legacy MeNB reports its preference for the legacy parameter reduceMaxCCs

[0112] At T2, the UE moves to a MeNB that supports NR SCG overheat assistance and now reports only the preference for NR SCG, i.e. maxBW for FR2. In this case, the network should clear the previously reported legacy parameter (i.e. because the UE would have repeated it if it had wanted to keep it)

[0113] At T3, the UE reports only legacy parameters. In such a case, the network shall assume that the previously reported SCG Overheat Assistance will be cleared. This applies regardless of whether the UE moves to a MeNB that does not support NR SCG Overheat Assistance at T3.

[0114] The following table Table 2 relates to the assistance information provided by the UE to the network upon mode change, and the meaning of the information provided. This table clarifies what information the UE should include whenever overheat assistance is signaled to the UE.

[0115]

[0116] Table 2

[0117] In a second embodiment of the present disclosure, various signaling protocols include lists, such as a list of cells, supported frequency band combinations (with some parameters in each). When a new parameter is introduced, in order to signal each entry in the list, a parallel list can be created with the same number of entries listed in the same order. This requires little overhead, but requires more lines in the specification and creates problems when specifying such new parameters.

[0118] Sometimes, there may be several lists for which the same information is to be signaled, for example to expand the list size or to support more entries or to include entries not relevant for legacy nodes.

[0119] Examples include Figure 3a and 3b As shown, two examples are shown, a first example for LTE and a second example for New Radio (NR).

[0120] When more than one list is used for the original field, a single list is used for the new parameter. The number of entries in this single list is equal to the total number of entries in the multiple lists of the original field, and are listed in the order in which they are defined.

[0121] Clarification is provided regarding total size and ordering, as shown in the following example.

[0122] If the network / UE includes xxListComb, the number of entries included corresponds to the total entries in xxListYy and xxListYy2, and the entries corresponding to xxListYy2 are placed after the entries corresponding to xxListYy, and the entries in the first part are in the same order as in xxListYy, and similarly, the entries in the second part are listed in the same order as in xxListYy2.

[0123] Benefits of such an approach include helping to avoid errors due to forgetting to extend some of the multiple lists (as in the NR BC example, Figure 3b ) and helps reduce the size of the specification (as shown for the LTE example, Figure 3a In addition, the signaling overhead is slightly reduced (i.e., since the list has only a single length determinant)

[0124] Figure 4a and 4b The results for two different cases are shown Figure 3a and 3b In the first case, in Figure 4aThe additional parameters added in v1310 are replaced by a single combinatorial list (freqPriorityListCombEUTRA) with a larger number of entries (i.e. 16 instead of 8 frequencies) because the list has been extended (i.e. covering the original list size, the first 8 entries and its extension, i.e. the additional 8 entries).

[0125] If the network includes freqPriorityListCombEUTRA, the number of entries included corresponds to the total entries in freqPriorityListEUTRA and freqPriorityListExtEUTRA, and the entries corresponding to freqPriorityListExtEUTRA are placed after the entries corresponding to freqPriorityListEUTRA, and the entries in the first part are in the same order as in freqPriorityListEUTRA, and similarly, the entries in the second part are listed in the same order as in freqPriorityListExtEUTRA.

[0126] exist Figure 4b In this case, the UE includes two parts in supportedBandCombinationList-v15x0, namely first the entry corresponding to supportedBandCombinationList (again, listed in the same order as this field), and then the entry corresponding to supportedBandCombinationListNEDC-Only (again, listed in the same order as this field)

[0127] Another embodiment of the present disclosure relates to signaling aspects related to so-called early measurements that the network can configure the UE to perform. These early measurements are performed when the UE is in idle or inactive mode. The latest results of these measurements are stored by the UE. If stored, the UE indicates the availability of the measurement results when establishing or resuming a connection with the network. The network can then request the UE to provide the results using a UE information procedure including request and response messages. Alternatively, the network can request the UE to provide the results during connection recovery, in which case the network makes the request blindly, i.e., it does not yet know whether the UE has available results. In the event that the UE does not have available results, it simply ignores the blind request.

[0128] The early measurement reporting function was introduced in Release 14 (R15) of the 3GPP LTE / EUTRA standard. R15 of the 3GPP standard introduced support for 5G or NR. Correspondingly, R15 of the LTE standard was extended to cover early measurement reporting for NR frequencies, mainly to help the network speed up the configuration of dual connectivity (i.e. EN-DC) with LTE (EUTRA) for the primary cell group (MCG) and NR for the secondary cell group (SCG).

[0129] The R14 early measurement procedure involves the following signaling:

[0130] SIB2 includes a field by which a network can basically indicate that it supports early measurements

[0131] The UE can indicate the availability of the result when switching to a connection, i.e. through the fields in SetupComplete and ResumeComplete.

[0132] UEInformationRequest includes fields through which the network can request the UE to provide early measurement results.

[0133] UEInformationResponse includes fields through which the UE can provide early measurement results.

[0134] This embodiment relates to different ways of extending signaling to support early measurement reporting for NR frequencies taking into account a tradeoff between flexibility and simplicity.

[0135] In the simplest first option, an additional field is introduced: an additional field in SIB2 indicating that the network supports early measurement reporting for NR frequencies. In this case, the process is as follows:

[0136] For both LTE and NR frequencies, the UE uses an existing field to indicate the availability of early measurement results. That is, even if the UE only has results for NR frequencies, this field will be used

[0137] The network uses existing fields to request early measurement results. When receiving the request, the UE provides measurement results for the LTE frequencies, as in R14. In addition, the UE also includes results for NR frequencies where available, but only if the new NR-specific field in SIB2 indicates network support for this.

[0138] In the second option, another additional field is introduced, specifically indicating the availability of the result for NR frequencies. In this case, more changes to the standard specification are required, and the process becomes as follows:

[0139] UE uses existing field to indicate availability of early measurement results for LTE frequencies. UE uses new field to indicate availability of results for NR frequencies

[0140] The network requests early measurement results using an existing field. If this field is set, the UE provides measurement results in the same way as the first option above.

[0141] In the second option, the network knows whether the UE has results only for NR frequencies and can therefore avoid initiating information acquisition when such results are not of interest.

[0142] As mentioned earlier, IDC is of interest and other issues arise in NR because its frequency band comprises a relatively large bandwidth and the network can configure the UE to operate in a specific portion of such a frequency band.

[0143] Figure 5a-5c shows some of the issues involved, namely:

[0144] What does the ARFCN (Absolute Radio Frequency Channel Number) indicate exactly?

[0145] UE operation with respect to the portion of the band reporting IDC depends on whether the network signals the bandwidth parameter

[0146] In the prior art, Figure 5a As shown, the ARFCN signaled to the UE is interpreted as indicating only the frequency band, and the network may set it to some defined reference frequency within the frequency band, such as the center of the frequency band or the so-called pointA defined in the 3GPP standard. In such a case, the UE may have to provide an IDC indication whenever it detects an IDC problem anywhere in the relevant frequency band, even if the IDC problem is only related to a limited part of the frequency band (i.e. a limited frequency range). In this case, for a given frequency band, the network only signals a single ARFCN.

[0147] In a first embodiment of the present disclosure, the ARFCN does not indicate the entire frequency band, but rather indicates a specific center frequency within the relevant frequency band for which the UE is requested to report IDC. In this case, the UE provides an IDC indication when it detects an IDC problem within a limited portion centered around the indicated ARFCN. In this case, the network does not signal the bandwidth to be monitored, and different UEs may monitor IDC problems in different bandwidth portions, for example depending on their capabilities. Figure 5b This shows that Figure 5b It shows how two UEs (UE1 and UE2) given the same ARFCN will actually monitor different bandwidths depending on their own configurations. Figure 5bIt is also shown that for a given frequency band, the network can actually signal multiple ARFCNs, such as ARFCN 1 and ARFCN 2 In this way, the network can determine that although the UE is in the ARFCN 1 IDC issues are encountered around, but it may be in ARFCN 2 There is no IDC problem in the frequency band portion centered.

[0148] In a second embodiment of the present disclosure, the network explicitly signals the ARFCN in addition to the bandwidth BW over which the UE should report the IDC problem. In this case, there is no doubt about the exact frequency range over which the UE needs to report the IDC problem. Furthermore, if the UE provides an IDC report, the network clearly knows which part of the frequency band is affected by the IDC problem and should therefore be avoided. Namely, this concerns the part centered around ARFCN-2 and having the indicated bandwidth BW. This is accomplished by Figure 5c Shown, Figure 5c It is also shown that the network can still request different UEs to report IDC around different ARFCNs and / or for different BWs. Note that for each ARFCN, the portion of the frequency band for UE2 is different, indicating that UE2 is required to monitor a different bandwidth for each ARFCN.

[0149] In another embodiment of the present disclosure, in the case where the BW is not indicated to the UE as described above, the BW used for UE reporting is derived from the UE capabilities. If this is derived from the UE capabilities according to some defined rule, the network will know which BW the UE used when reporting the IDC problem.

[0150] The UE capabilities specify what BW the UE can support for different possible configurations, in particular for different supported band combinations (BCs). One option is that the BW that the UE uses to report IDC for a certain band can be the maximum BW it supports for the relevant band among all supported band combinations (including the relevant band indicated in the UE capabilities). As an example, if band b1 is supported for 3 BCs (BC-a, BC-b, BC-c), the BW values ​​are 10, 20 and 10 MHz respectively. In such a case, if an IDC problem is detected or expected within a BW of 20 MHz, the UE reports IDC.

[0151] If in the example above, the IDC problem is outside the center 10MHz, the UE will suffer from IDC problems only for BC-a and BC-c and not for BC-b. However, when more details are not known, the network may have to avoid configuring any of the three BCs.

[0152] Another option would be for the UE to apply the BW supported by the UE to the relevant band including all supported BCs of the relevant band. In the example above this would be 10 MHz. But other options are not excluded.

[0153] In case the UE is configured with a band combination including the band for which it is requested to report an IDC issue, another option would be for the UE to apply the BW portion (or BWP) that the UE is actually configured to use. Alternatively, even if configured with a BC including the band in question, the UE may still use the BW for IDC reporting according to rules based on UE capabilities as described above. If the ARFCN indicated in the IDC configuration is outside the frequency range / BWP currently used by the UE, then an alternative option may be more appropriate.

[0154] The following concerns LTE IDC for the NR BW portion, and the signaling associated with it.

[0155] In the first case, the network indicates an ARFCN for each BW portion to be monitored. Prior art signaling may be sufficient. However, a greater number of ARFCNs may be required, for example, four ARFCNs may be configured to a specific frequency band. ASN.1 variants implementing the same or similar are also applicable.

[0156] Figure 6 An example of a configuration illustrating this first case is shown.

[0157] In the second case, the network indicates the ARFCN plus the BW for each BW portion to be monitored.The known prior art signalling needs to be extended, at least to indicate the BW.

[0158] As mentioned above, a greater number of ARFCNs may be required, so, for example, four ARFCNs may be assigned to a particular frequency band. ASN.1 variants that implement the same or similar are also applicable.

[0159] Figure 7 An example of a configuration illustrating this second case is shown.

[0160] Figure 8 A representation of the message exchange between the UE and the network is shown, illustrating the setup of the IDC configuration, the reporting of the initial reporting changes.

[0161] Fig. 9 A block diagram of a user equipment (UE) in a wireless communication system according to an embodiment of the present disclosure is shown.

[0162] refer to Fig. 9 UE 900 may include a processor 910, a transceiver 920, and a memory 930. However, not all of the components shown are required. UE 900 may include: Fig. 9The components shown may be implemented with more or fewer components. In addition, according to another embodiment, the processor 910 and the transceiver 920 and the memory 930 may be implemented as a single chip.

[0163] The above-mentioned components will now be described in detail.

[0164] The processor 910 may include one or more processors or other processing devices that control the proposed functions, processes and / or methods. The operations of the UE 900 may be implemented by the processor 910.

[0165] In one embodiment, the processor 910 may detect overheating (ie, IDC problem) and control the transceiver 920 to transmit assistance information for overheating to the base station.

[0166] In one embodiment, the processor 910 may monitor the BW portion associated with the ARFCN and control the transceiver 920 to provide an IDC report associated with the ARFCN to the base station.

[0167] The transceiver 920 may include an RF transmitter for up-converting and amplifying a transmission signal, and an RF receiver for down-converting the frequency of a reception signal. However, according to another embodiment, the transceiver 920 may be implemented by more or fewer components than those shown in the components.

[0168] The transceiver 920 may be connected to the processor 910 and transmit and / or receive signals. The signal may include control information and data. In addition, the transceiver 920 may receive a signal through a wireless channel and output the signal to the processor 910. The transceiver 920 may transmit a signal output from the processor 910 through a wireless channel.

[0169] The memory 930 may store control information or data included in a signal obtained by the UE 900. The memory 930 may be connected to the processor 910 and store at least one instruction or protocol or parameter for the proposed function, process and / or method. The memory 930 may include a read-only memory (ROM) and / or a random access memory (RAM) and / or a hard disk and / or a CD-ROM and / or a DVD and / or other storage devices.

[0170] Fig.10 1 is a block diagram of a base station in a wireless communication system according to an embodiment of the present disclosure. In one embodiment of the present disclosure, the base station includes a master node (MN) or a secondary node (SN). In one embodiment of the present disclosure, the base station uses a radio access technology based on at least one of LTE or NR.

[0171] refer to Fig.10, the base station 1000 may include a processor 1010, a transceiver 1020, and a memory 1030. However, not all of the components shown are required. The base station 1000 may include: Fig.10 The components shown may be implemented with more or fewer components. In addition, according to another embodiment, the processor 1010, the transceiver 1020, and the memory 1030 may be implemented as a single chip.

[0172] The above-mentioned components will now be described in detail.

[0173] The processor 1010 may include one or more processors or other processing devices that control the proposed functions, processes and / or methods. The operations of the base station 1000 may be implemented by the processor 1010.

[0174] In one embodiment, processor 1010 may generate a configuration to include information indicating an ARFCN associated with the BW portion.

[0175] In one embodiment, the processor 1010 may control the configuration of the transceiver 1020 to transmit overheating assistance information to the UE.

[0176] In one embodiment, the processor 1010 may control the transceiver 1020 to receive assistance information from the UE and control a radio configuration of the UE based on the assistance information.

[0177] The transceiver 1020 may include an RF transmitter for up-converting and amplifying a transmission signal, and an RF receiver for down-converting the frequency of a reception signal. However, according to another embodiment, the transceiver 1020 may be implemented by more or less components than those shown in the components.

[0178] The transceiver 1020 may be connected to the processor 1010 and transmit and / or receive signals. The signal may include control information and data. In addition, the transceiver 1020 may receive a signal through a wireless channel and output the signal to the processor 1010. The transceiver 1020 may transmit a signal output from the processor 1010 through a wireless channel.

[0179] The memory 1030 may store control information or data included in a signal obtained by the base station 1000. The memory 1030 may be connected to the processor 1010 and store at least one instruction or protocol or parameter for the proposed function, process and / or method. The memory 1030 may include a read-only memory (ROM) and / or a random access memory (RAM) and / or a hard disk and / or a CD-ROM and / or a DVD and / or other storage devices.

[0180] At least some of the example embodiments described herein may be constructed in part or in whole using dedicated special hardware. Terms such as "component", "module" or "unit" used herein may include but are not limited to hardware devices, such as circuits, field programmable gate arrays (FPGAs) or application specific integrated circuits (ASICs) in the form of discrete or integrated components, which perform specific tasks or provide associated functions. In some embodiments, the described element 01 may be configured to reside on a tangible, persistent, addressable storage medium and may be configured to execute on one or more processors. In some embodiments, these functional elements may, for example, include components (such as software components, object-oriented software components, class components and task components), processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcodes, circuits, data, databases, data structures, tables, arrays and variables. Although example embodiments have been described with reference to components, modules and units discussed herein, these functional elements may be combined into fewer elements or separated into additional elements. Various combinations of optional features have been described herein, and it should be understood that the described features may be combined in any suitable combination. In particular, the features of any one exemplary embodiment may be combined with the features of any other embodiment as appropriate, unless such combinations are mutually exclusive. Throughout the specification, the term "comprise" or "includes" means including the specified (one or more) components, but does not exclude the presence of other components.

[0181] Attention is paid to all documents and files which are filed concurrently with or before this specification in connection with this application and which are open to public inspection with this specification, and the contents of all these documents and files are incorporated herein by reference.

[0182] All features disclosed in this specification (including any accompanying claims, abstract and drawings), and / or all steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0183] Unless otherwise expressly stated, each feature disclosed in this specification (including any attached claims, abstracts and drawings) may be replaced by alternative features for the same, equivalent or similar purpose. Therefore, unless otherwise expressly stated, each feature disclosed is only an example of a general series of equivalent or similar features.

[0184] The present disclosure is not limited to the details of the foregoing (one or more) embodiments. The present disclosure extends to any novel feature or any novel combination of features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel step or any novel combination of steps of any method or process so disclosed.

[0185] In the above detailed embodiments of the present disclosure, the elements included in the present disclosure can be expressed in singular or plural form according to the proposed detailed embodiments. However, singular or plural expressions have been appropriately selected for the situation proposed for the convenience of description, and the present disclosure is not limited to singular or plural elements. Although the element has been expressed in plural form, it can be configured as a singular form. Although the element has been expressed in singular form, it can be configured as a plural form. The embodiments described in this specification have been described separately, but two or more embodiments can be combined and implemented.

[0186] Although detailed embodiments have been described in the detailed description of the present disclosure, the present disclosure may be modified in various ways without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the above embodiments, but should be limited not only by the claims but also by their equivalents.

[0187] The terms used in the embodiments and embodiments of the present disclosure are not intended to limit the technology described herein to specific embodiments, but should be interpreted as including various changes, equivalents and / or substitutes of corresponding embodiments. Regarding the description of the accompanying drawings, similar reference numerals may be used for similar elements. Unless otherwise clearly defined in the context, the expression of the singular may include the expression of the plural number. In this document, expressions such as "A or B", "at least one of A or / and B", "A, B or C" or "at least one of A, B and / or C" may include all possible combinations of listing items together. Expressions such as "first", "second", "the first" and "the second" may modify the corresponding elements, regardless of order and / or importance, and are only used to distinguish one element from another element, without limiting the corresponding elements. When describing a (e.g., first) element "(operably or communicatively) connected" to other (e.g., second) elements or "connected" to other (e.g., second) elements, an element may be directly connected to the other elements or may be connected to the other elements by another element (e.g., the third element).

[0188] The "module" used in the present disclosure includes a unit configured with hardware, software or firmware, and can be used interchangeably with terms such as logic, logic block, component or circuit. A module can be an integrated part, a minimum unit that performs one or more functions, or a part thereof. For example, a module can be configured with an application-specific integrated circuit (ASIC).

[0189] Various embodiments of the present disclosure may be implemented as a machine (e.g., computer) readable storage medium (e.g., software (e.g., program) including instructions stored in an internal memory or an external memory). A device is a device capable of acquiring instructions stored in a storage medium and operating according to the acquired instructions, and may include a base station or a UE according to various embodiments. If the instructions are received by a processor (e.g., Fig. 9 Processor 910 or Fig.10 If the instruction is executed by the processor 1020 of the processor, the function corresponding to the instruction can be directly executed by the processor, or can be executed using other elements under the control of the processor. The instruction may include code generated or executed by a compiler or interpreter.

[0190] The machine-readable storage medium may be provided in the form of a non-transitory storage medium. In this case, the term "non-transitory" means that the storage medium does not include a signal and is tangible, and is not limited to whether data is stored in the storage medium semi-permanently or temporarily.

[0191] The methods according to various embodiments disclosed in the present disclosure may be included in a computer program product and provided. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed online in the form of a device-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)) or through an application store (e.g., PlayStore). In the case of online distribution, at least some computer program products may be at least temporarily stored or temporarily generated in a storage medium (such as a memory of a manufacturer's server, an application store's server, or a relay server).

[0192] Each element (e.g., module or program) according to various embodiments may be configured with a single entity or multiple entities. Some of the above sub-elements may be omitted, and other sub-elements may be further included in various embodiments. Alternatively or additionally, some elements (e.g., modules or programs) may be integrated into one entity, and the functions performed identically or similarly by each corresponding element before integration may be performed.

[0193] Operations performed by modules, programs or other elements according to various embodiments may be performed sequentially, in parallel, repeatedly or heuristically, or at least some operations may be performed in a different order or may be omitted, or other operations may be added.

[0194] Figures 1 to 10 The methods of the embodiments shown in FIG. 1 may include a combination of methods from more than one of the illustrated embodiments.

[0195] While the invention has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A method performed by a base station in a wireless communication system, the method comprising: Sending configuration information about in-device coexistence IDC assistance to the terminal, including a list of information about candidate service frequency ranges, the information about the candidate service frequency ranges including first information about a first center frequency of the candidate frequency ranges and second information about a first bandwidth of the candidate frequency ranges, wherein the first information indicates an absolute radio frequency channel number ARFCN value for which the terminal is requested to report an IDC problem; and receiving, based on the configuration information, IDC assistance information from the terminal, the IDC assistance information comprising information about an affected carrier frequency associated with the IDC problem, the information about the affected carrier frequency comprising third information about a second center frequency of the affected carrier frequency and fourth information about a second bandwidth of the affected carrier frequency, The second center frequency of the affected carrier frequency is located within the first bandwidth of the candidate frequency range.

2. The method according to claim 1, wherein: In case that a plurality of frequency bands are configured for the terminal and the candidate serving frequency range is included in the frequency band combinations supported by the terminal, the information about the affected carrier frequencies includes information indicating at least one frequency band combination affected by the IDC problem.

3. The method according to claim 2, in, The information indicating the at least one frequency band combination includes bandwidth information of each of the at least one frequency band combination.

4. A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, configuration information about in-device coexistence IDC assistance, including a list of information about candidate serving frequency ranges, the information about the candidate serving frequency ranges including first information about a first center frequency of the candidate frequency ranges and second information about a first bandwidth of the candidate frequency ranges, wherein the first information indicates an absolute radio frequency channel number (ARFCN) value for which the terminal is requested to report an IDC problem; Based on the configuration information, identifying an affected carrier frequency for which the terminal detects an IDC problem, wherein a second center frequency of the affected carrier frequency is within a first bandwidth of the candidate frequency range; and sending IDC assistance information including information about affected carrier frequencies to a base station, The information about the affected carrier frequency includes third information about the second center frequency of the affected carrier frequency and fourth information about the second bandwidth of the affected carrier frequency.

5. The method according to claim 4, wherein: In case that a plurality of frequency bands are configured for the terminal and the candidate serving frequency range is included in the frequency band combinations supported by the terminal, the information about the affected carrier frequencies includes information indicating at least one frequency band combination affected by the IDC problem.

6. The method according to claim 5, in, The information indicating the at least one frequency band combination includes bandwidth information of each of the at least one frequency band combination.

7. A base station in a wireless communication system, the base station comprising: Transceiver; as well as The controller is configured as: controlling the transceiver to send configuration information about in-device coexistence IDC assistance to the terminal, including a list of information about candidate service frequency ranges, the information about the candidate service frequency ranges including first information about a first center frequency of the candidate frequency ranges and second information about a first bandwidth of the candidate frequency ranges, wherein the first information indicates an absolute radio frequency channel number (ARFCN) value for which the terminal is requested to report an IDC problem, and Based on the configuration information, control the transceiver to receive IDC assistance information from the terminal, the IDC assistance information including information about an affected carrier frequency associated with the IDC problem, the information about the affected carrier frequency including third information about a second center frequency of the affected carrier frequency and fourth information about a second bandwidth of the affected carrier frequency, The second center frequency of the affected carrier frequency is within the first bandwidth of the candidate frequency range.

8. The base station according to claim 7, wherein: In case that a plurality of frequency bands are configured for the terminal and the candidate serving frequency range is included in the frequency band combinations supported by the terminal, the information about the affected carrier frequencies includes information indicating at least one frequency band combination affected by the IDC problem.

9. The base station according to claim 8, in, The information indicating the at least one frequency band combination includes bandwidth information of each of the at least one frequency band combination.

10. A terminal in a wireless communication system, the terminal comprising: Transceiver; as well as The controller is configured as: controlling the transceiver to receive configuration information about in-device coexistence IDC assistance from a base station, including a list of information about candidate service frequency ranges, the information about the candidate service frequency ranges including first information about a first center frequency of the candidate frequency ranges and second information about a first bandwidth of the candidate frequency ranges, wherein the first information indicates an absolute radio frequency channel number (ARFCN) value for which the terminal is requested to report an IDC problem, identifying, based on the configuration information, an affected carrier frequency for which the terminal detects an IDC problem, wherein a second center frequency of the affected carrier frequency is within a first bandwidth of the candidate frequency range, and controlling the transceiver to send IDC assistance information including information about affected carrier frequencies to a base station, The information about the affected carrier frequency includes third information about the second center frequency of the affected carrier frequency and fourth information about the second bandwidth of the affected carrier frequency. The terminal according to claim 10 , wherein: In case that a plurality of frequency bands are configured for the terminal and the candidate serving frequency range is included in the frequency band combinations supported by the terminal, the information about the affected carrier frequencies includes information indicating at least one frequency band combination affected by the IDC problem.

12. The terminal according to claim 11, in, The information indicating the at least one frequency band combination includes bandwidth information of each of the at least one frequency band combination.

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