Communication device, base station, and communication method

Abstract

A communication device (100) according to an embodiment comprises a communication unit (110) for receiving from a network (10) a radio resource control (RRC) message including a plurality of measurement gap configurations, and a control unit (120) for performing measurement with respect to an object for measurement during each measurement gap configured on the basis of the plurality of measurement gap configurations. The RRC message includes a measurement gap common configuration associated with each of the plurality of measurement gaps and designating a measurement gap common scheme.

Description

Cross - reference to related applications

[0001] This application is based on and claims the benefit of priority from patent application No. 2021 - 172749, filed on October 21, 2021, and all of the contents of that patent application are incorporated herein by reference.

Technical Field

[0002] The present disclosure relates to a communication device, a base station, and a communication method used in a mobile communication system.

Background Art

[0003] In 3GPP (registered trademark; the same shall apply hereinafter) (3rd Generation Partnership Project), which is a standardization project for mobile communication systems, a plurality of measurement gap settings for setting a gap pattern composed of measurement gaps that can interrupt communication with a base station are set in a communication device (see Non - Patent Document 1). Thereby, the communication device can perform measurements on measurement targets other than the serving cell during the measurement gaps set based on the measurement settings while maintaining the connection with the base station (serving cell).

[0004] In recent years, even when there are a plurality of measurement targets to be measured by a communication device, a method of setting a plurality of gap patterns in the communication device has been discussed so that measurements can be performed with an optimal gap pattern for each measurement target (see Non - Patent Document 2).

Prior Art Documents

Non - Patent Documents

[0005]

Non - Patent Document 1

Non - Patent Document 2

Summary of the Invention

[0006] The communication device according to the first aspect includes a communication unit that receives a radio resource control (RRC) message including a plurality of measurement gap settings from a network, and a control unit that performs measurements on a measurement target during each measurement gap set based on the plurality of measurement gap settings. The RRC message includes a measurement gap sharing setting associated with each of the plurality of measurement gaps and specifying a measurement gap sharing scheme.

[0007] The base station according to the second aspect includes a communication unit that transmits a radio resource control (RRC) message including a plurality of measurement gap settings to a communication device. The RRC message includes a measurement gap sharing setting associated with each of the plurality of measurement gaps and specifying a measurement gap sharing scheme.

[0008] The communication method according to the third aspect is a communication method executed by a communication device. The communication method includes a step of receiving a radio resource control (RRC) message including a plurality of measurement gap settings from a network, and a step of performing measurements on a measurement target during each measurement gap set based on the plurality of measurement gap settings. The RRC message includes a measurement gap sharing setting associated with each of the plurality of measurement gaps and specifying a measurement gap sharing scheme.

Brief Description of the Drawings

[0009] The objects, features, advantages, etc. of the present disclosure will become clearer from the following detailed description with reference to the accompanying drawings.

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Embodiments for Carrying Out the Invention

[0010] A mobile communication system according to an embodiment will be described with reference to the drawings. In the description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

[0011] In the current 3GPP technical specification, a plurality of measurement targets can be set in a communication device, while only one gap pattern can be set in the communication device. For this reason, when a plurality of gap patterns are set in the communication device, there is a concern that appropriate measurements cannot be performed. Therefore, one of the objectives of the present disclosure is to provide a communication device, a base station, and a communication method that enable appropriate measurements when a plurality of gap patterns are set.

[0012] (Configuration of Mobile Communication System) With reference to FIG. 1, the configuration of a mobile communication system 1 according to an embodiment will be described. The mobile communication system 1 is, for example, a system compliant with 3GPP's Technical Specification (TS). Hereinafter, as the mobile communication system 1, a 5th Generation System (5GS) of 3GPP standard, that is, a mobile communication system based on NR (New Radio) will be described as an example.

[0013] The mobile communication system 1 includes a network 10 and a user equipment (UE) 100 that communicates with the network 10. The network 10 includes an NG-RAN (Next Generation Radio Access Network) 20, which is a 5G radio access network, and a 5GC (5G Core Network) 30, which is a 5G core network.

[0014] UE100 is an example of a communication device. UE100 may be a mobile wireless communication device. UE100 may be a communication device that communicates via base station 200. UE100 may be a device used by a user. UE100 may be a user equipment defined by the 3GPP technical specifications. UE100 is, for example, a mobile device such as a mobile phone terminal like a smartphone, a tablet terminal, a notebook PC, a communication module, or a communication card. UE100 may be a vehicle (e.g., a car, a train, etc.) or a device provided thereon. UE100 may be a transport aircraft other than a vehicle (e.g., a ship, an airplane, etc.) or a device provided thereon. UE100 may be a sensor or a device provided thereon. Note that UE100 may be called by another name such as a mobile station, a mobile terminal, a mobile device, a mobile unit, a subscriber station, a subscriber terminal, a subscriber device, a subscriber unit, a wireless station, a wireless terminal, a wireless device, a wireless unit, a remote station, a remote terminal, a remote device, or a remote unit.

[0015] NG-RAN20 includes a plurality of base stations 200. Each base station 200 manages at least one cell. A cell constitutes the smallest unit of a communication area. For example, one cell belongs to one frequency (carrier frequency) and is composed of one component carrier. The term "cell" may represent a wireless communication resource or may represent a communication target of UE100. Each base station 200 can perform wireless communication with UE100 present in its cell. The base station 200 communicates with UE100 using the RAN protocol stack. The base station 200 provides NR user plane and control plane protocol terminations towards UE100 and is connected to 5GC30 via the NG interface. Such an NR base station 200 may be referred to as a gNodeB (gNB).

[0016] 5GC30 includes a core network device 300. The core network device 300 includes, for example, an AMF (Access and Mobility Management Function) and / or a UPF (User Plane Function). The AMF performs mobility management of the UE100. The UPF provides functions specialized for user plane processing. The AMF and the UPF are connected to the base station 200 via an NG interface.

[0017] Referring to FIG. 2, a configuration example of a protocol stack in the mobile communication system 1 according to the embodiment will be described.

[0018] The protocol of the radio section between the UE100 and the base station 200 has a physical (PHY) layer, a MAC (Medium Access Control) layer, an RLC (Radio Link Control) layer, a PDCP (Packet Data Convergence Protocol) layer, and an RRC (Radio Resource Control) layer.

[0019] The PHY layer performs encoding / decoding, modulation / demodulation, antenna mapping / demapping, and resource mapping / demapping. Between the PHY layer of the UE100 and the PHY layer of the base station 200, data and control information are transmitted via a physical channel.

[0020] The physical channel is composed of a plurality of OFDM (Orthogonal Frequency Division Multiplexing) symbols in the time domain and a plurality of subcarriers in the frequency domain. One subframe is composed of a plurality of OFDM symbols in the time domain. A resource block is a resource allocation unit and is composed of a plurality of OFDM symbols and a plurality of subcarriers. A frame can be composed of 10 ms and can include 10 subframes composed of 1 ms. The number of slots corresponding to the subcarrier spacing can be included in the subframe.

[0021] Among physical channels, the Physical Downlink Control Channel (PDCCH) plays a central role, for example, for purposes such as downlink scheduling assignment, uplink scheduling grant, and transmission power control.

[0022] In NR, the UE 100 can use a bandwidth narrower than the system bandwidth (i.e., the cell bandwidth). The base station 200 sets a bandwidth part (BWP) consisting of consecutive PRBs for the UE 100. The UE 100 transmits and receives data and control signals in the active BWP. For the UE 100, for example, up to four BWPs can be set. Each BWP may have a different subcarrier spacing or the frequencies may overlap with each other. When multiple BWPs are set for the UE 100, the base station 200 can specify which BWP to activate by control in the downlink. Thereby, the base station 200 can dynamically adjust the UE bandwidth according to, for example, the amount of UE data traffic, etc., and can reduce UE power consumption.

[0023] The base station 200 can set up to three control resource sets (CORESETs) for each of up to four BWPs on the serving cell, for example. The CORESET is a radio resource for control information that the UE 100 should receive. Up to 12 CORESETs can be set for the UE 100 on the serving cell. Each CORESET has an index from 0 to 11. For example, a CORESET is composed of six resource blocks (PRBs) and one, two, or three consecutive OFDM symbols in the time domain.

[0024] The MAC layer performs data priority control, retransmission processing by Hybrid Automatic Repeat reQuest (HARQ), and random access procedures, etc. Between the MAC layer of UE100 and the MAC layer of base station 200, data and control information are transmitted via the transport channel. The MAC layer of base station 200 includes a scheduler. The scheduler determines the uplink and downlink transport formats (transport block size, modulation and coding scheme (MCS)) and the allocated resources for UE100.

[0025] The RLC layer transmits data to the RLC layer on the receiving side by utilizing the functions of the MAC layer and the PHY layer. Between the RLC layer of UE100 and the RLC layer of base station 200, data and control information are transmitted via the logical channel.

[0026] The PDCP layer performs header compression / expansion and encryption / decryption.

[0027] An SDAP (Service Data Adaptation Protocol) layer may be provided as the upper layer of the PDCP layer. The SDAP (Service Data Adaptation Protocol) layer performs the mapping between the IP flow, which is the unit for the core network to perform QoS (Quality of Service) control, and the radio bearer, which is the unit for the AS (Access Stratum) to perform QoS control.

[0028] The RRC layer controls the logical channel, transport channel, and physical channel according to the establishment, re - establishment, and release of the radio bearer. Between the RRC layer of UE100 and the RRC layer of base station 200, RRC signaling for various settings is transmitted. When there is an RRC connection between the RRC of UE100 and the RRC of base station 200, UE100 is in the RRC connected state. When there is no RRC connection between the RRC of UE100 and the RRC of base station 200, UE100 is in the RRC idle state. When the RRC connection between the RRC of UE100 and the RRC of base station 200 is suspended, UE100 is in the RRC inactive state.

[0029] The NAS layer located above the RRC layer manages the session management and mobility management of UE100. Between the NAS layer of UE100 and the NAS layer of core network device 300 (AMF), NAS signaling is transmitted. Note that UE100 has an application layer etc. in addition to the protocol of the radio interface.

[0030] (Assumed Scenario) Referring to FIGS. 3 and 4, the assumed scenario in the mobile communication system 1 according to the embodiment will be described. FIG. 3 shows a sequence of an operation example in an existing 3GPP mobile communication system, that is, a mobile communication system according to the technical specifications before Release 16. Note that UE100 is in the RRC connected state. UE100 communicates with base station 200 in the serving cell managed by base station 200.

[0031] As shown in FIG. 3, in step S11, base station 200 generates a radio resource control (RRC) message. The RRC message is, for example, an RRC re - configuration message, an RRC resume message, etc. Hereinafter, the RRC re - configuration message will be taken as an example for explanation. The RRC re - configuration message is a command for changing the RRC connection.

[0032] As shown in FIG. 4, the RRC message (e.g., RRCReconfiguration) includes a measurement configuration (e.g., MeasConfig) that specifies the measurements to be performed by the UE 100. The measurement configuration includes a list of measurement objects to be added and / or modified (e.g., MeasObjectToAddModList), a list of measurement report configurations to be added and / or modified (e.g., ReportConfigToAddModList), a list of measurement identifiers to be added and / or modified (e.g., MeasIdToAddModList), and a measurement gap configuration (e.g., MeasGapConfig). Further, the measurement configuration may include a list of measurement objects to be removed (e.g., MeasObjectToRemoveList), a list of measurement report configurations to be removed (e.g., ReportConfigToRemoveList), and a list of measurement identifiers to be removed (e.g., MeasIdToRemoveList).

[0033] The list of measurement objects (e.g., MeasObjectToAddModList) may include a plurality of measurement object configurations (e.g., MeasObjectToAddMod) that specify the measurement objects. The measurement object configuration includes a set of a measurement object identifier (e.g., MeasObjectId) and measurement object information (e.g., measObject). The measurement object identifier is used to identify the measurement object configuration. The measurement object information may be information that specifies, for example, a frequency, a reference signal, etc. 。Reference The reference signal may be at least any one of a synchronization signal and a physical broadcast channel block (SSB) composed of a primary synchronization signal (hereinafter, PSS) and a secondary synchronization signal (hereinafter, SSS) and a physical broadcast channel (PBCH), a channel state information reference signal (CSI-RS), and a positioning reference signal (PRS). The measurement object includes, for example, a measurement object (MeasObjectNR) that specifies information applicable to intra-frequency / inter-frequency measurement of an SS / PBCH block and / or intra-frequency / inter-frequency measurement of a CSI-RS.

[0034] The list of measurement report settings (e.g., ReportConfigToAddModList) may include multiple measurement report settings (e.g., ReportConfigToAddMod). The measurement report setting includes a set of a report setting identifier (e.g., ReportConfigId) and a measurement report setting (e.g., reportConfig). The report setting identifier is used to identify the measurement report setting. The measurement report setting may specify a criterion that triggers the reporting of the measurement result.

[0035] The list of measurement identifiers (e.g., MeasIdToAddModList) includes a set of a measurement identifier, a measurement target identifier, and a report setting identifier (e.g., MeasIdToAddMod). Therefore, the measurement identifier is associated with a combination of a measurement target setting and a measurement report setting via the measurement target identifier and the report setting identifier.

[0036] The measurement gap setting (e.g., MeasGapConfig) is used to set up and release a gap pattern (e.g., a measurement gap). The gap pattern is composed of measurement gaps that can interrupt communication. The measurement gap setting may include gapOffset, mgl, mgrp, and mgta. mgl is the measurement gap length of the measurement gap. mgrp is the measurement gap repetition period (MGRP) of the measurement gap. mgta is the measurement gap timing advance. gapOffset is the gap offset of the gap pattern with MGRP.

[0037] In step S12, the base station 200 transmits the generated RRC message to the UE100. The UE100 receives the RRC message. The UE100 performs settings based on the measurement settings included in the RRC message.

[0038] In step S13, UE100 performs measurements on the measurement target. Specifically, UE100 performs measurements on the measurement target set based on the measurement target setting during the measurement gap set based on the measurement gap setting.

[0039] In step S14, UE100 transmits a measurement report to base station 200. Base station 200 receives the measurement report from UE100. UE100 transmits a measurement report to base station 200 when the measurement report is triggered based on the measurement report setting.

[0040] In recent years, even when there are multiple measurement targets to be measured by UE100, a method of setting multiple gap patterns in UE100 has been discussed so that measurements can be performed with an optimal gap pattern for each measurement target.

[0041] However, in the current 3GPP technical specification, while multiple measurement targets can be set in UE100, only one gap pattern can be set in UE100. For this reason, when multiple gap patterns are set in UE100, there is a concern that appropriate measurements cannot be performed. In particular, when the measurement gaps overlap between two or more gap patterns associated with different measurement targets, UE100 does not know which measurement target to measure during the overlapping measurement gaps, and there is a concern that appropriate measurements cannot be performed. In an embodiment described later, operations for enabling appropriate measurements when multiple gap patterns are set will be described.

[0042] Also, in the current 3GPP, a measurement gap sharing setting (for example, MeasGapSharingConfig) indicating the time ratio when multiple measurement targets share the measurement gap in a time-division manner is set in the communication device. When there are multiple measurement targets in the measurement gap set by the measurement setting, the communication device shares the measurement gap in a time-division manner. Specifically, the communication device performs measurements on each measurement target in the measurement gap shared in a time-division manner at the time ratio based on the measurement gap sharing setting.

[0043] However, in the current 3GPP technical specifications, while multiple measurement targets can be set in a communication device, only one gap pattern can be set in the communication device. Therefore, when multiple gap patterns are set in the communication device, there is a concern that it is not possible to determine which gap pattern the measurement gap sharing setting should be applied to, and appropriate measurements cannot be performed. In an embodiment described later, operations for enabling appropriate measurements when multiple gap patterns are set will be described.

[0044] (Configuration of User Equipment) With reference to FIG. 5, the configuration of the UE 100 according to the embodiment will be described. The UE 100 includes a communication unit 110 and a control unit 120.

[0045] The communication unit 110 performs wireless communication with the base station 200 by transmitting and receiving wireless signals to and from the base station 200. The communication unit 110 has at least one transmission unit 111 and at least one reception unit 112. The transmission unit 111 and the reception unit 112 may be configured to include a plurality of antennas and RF circuits. An antenna converts a signal into an electromagnetic wave and radiates the electromagnetic wave into space. Also, the antenna receives an electromagnetic wave in space and converts the electromagnetic wave into a signal. The RF circuit performs analog processing of the signals transmitted and received via the antenna. The RF circuit may include a high-frequency filter, an amplifier, a modulator, a low-pass filter, and the like.

[0046] The control unit 120 performs various controls in the UE 100. The control unit 120 controls the communication with the base station 200 via the communication unit 110. The operations of the UE 100 described above and below may be operations under the control of the control unit 120. The control unit 120 may include at least one processor capable of executing a program and a memory that stores the program. The processor may execute the program to perform the operations of the control unit 120. The control unit 120 may also include a digital signal processor that performs digital processing of signals transmitted and received via the antenna and the RF circuit. The digital processing includes the processing of the RAN protocol stack. Note that the memory stores a program executed by the processor, parameters related to the program, and data related to the program. The memory may include at least one of ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), RAM (Random Access Memory), and flash memory. All or part of the memory may be included in the processor.

[0047] The UE100 configured as described above communicates with the base station 200. In the UE100, the communication unit 110 receives from the base station 200 a radio resource control (RRC) message including a plurality of measurement gap settings for setting a plurality of gap patterns each composed of a measurement gap capable of interrupting communication. The control unit 120 performs measurements on a measurement target during the measurement gaps set based on the plurality of measurement gap settings. In the RRC message, each of the plurality of measurement gap settings is associated with a measurement gap sharing setting indicating a time ratio when a plurality of measurement targets share the measurement gap in a time-division manner. Thereby, the UE100 (control unit 120) can apply the measurement gap sharing setting to a gap pattern (measurement gap) based on the measurement gap setting associated with the measurement gap sharing setting. As a result, even if the RRC message includes a plurality of measurement gap settings, the gap pattern to which the measurement gap sharing setting should be applied is known, and appropriate measurements can be performed. As a result, when a plurality of gap patterns are set, appropriate measurements become possible.

[0048] (Configuration of Base Station) With reference to FIG. 6, the configuration of the base station 200 according to the embodiment will be described. The base station 200 includes a communication unit 210, a network interface 220, and a control unit 230.

[0049] The communication unit 210 receives, for example, a radio signal from the UE100 and transmits a radio signal to the UE100. The communication unit 210 includes at least one transmission unit 211 and at least one reception unit 212. The transmission unit 211 and the reception unit 212 may be configured to include an RF circuit. The RF circuit performs analog processing of signals transmitted and received via an antenna. The RF circuit may include a high-frequency filter, an amplifier, a modulator, a low-pass filter, and the like.

[0050] The network interface 220 transmits and receives signals to / from the network. The network interface 220 receives signals from an adjacent base station connected via, for example, the Xn interface which is an interface between base stations, and transmits signals to the adjacent base station. Also, the network interface 220 receives signals from the core network device 300 connected via, for example, the NG interface, and transmits signals to the core network device 300.

[0051] The control unit 230 performs various controls in the base station 200. The control unit 230 controls, for example, the communication with the UE 100 via the communication unit 210. Also, the control unit 230 controls the communication with nodes (for example, an adjacent base station, the core network device 300) via, for example, the network interface 220. The operations of the base station 200 described above and below may be operations under the control of the control unit 230. The control unit 230 may include at least one processor capable of executing a program and a memory for storing the program. The processor may execute the program to perform the operations of the control unit 230. The control unit 230 may also include a digital signal processor that performs digital processing of signals transmitted and received via the antenna and the RF circuit. The digital processing includes the processing of the RAN protocol stack. Note that the memory stores the program executed by the processor, the parameters related to the program, and the data related to the program. All or part of the memory may be included in the processor.

[0052] The base station 200 configured as described above communicates with the UE 100. In the base station 200, the control unit 230 generates a radio resource control (RRC) message including a plurality of measurement gap settings for setting a plurality of gap patterns composed of measurement gaps that can interrupt communication. The communication unit 210 transmits the RRC message to the UE 100. In the RRC message, each of the plurality of measurement gap settings is associated with a measurement gap sharing setting indicating a time ratio when a plurality of measurement targets share the measurement gap in a time division manner. As a result, the UE 100 (control unit 120) can apply the measurement gap sharing setting to a gap pattern (measurement gap) based on the measurement gap setting associated with the measurement gap sharing setting. As a result, even if the RRC message includes a plurality of measurement gap settings, the gap pattern to which the measurement gap sharing setting should be applied is known, and appropriate measurements can be performed. As a result, when a plurality of gap patterns are set, appropriate measurements become possible.

[0053] (Operation of Mobile Communication System) (1) First Operation Example Referring to FIGS. 7 to 9, a first operation example of the mobile communication system 1 will be described. Note that the description will mainly focus on the differences from the above description.

[0054] As shown in FIG. 7, in step S101, the base station 200 (control unit 230) generates an RRC message. The RRC message includes a plurality of measurement gap settings. In the RRC message, each of the plurality of measurement gap settings is associated with at least one measurement identifier associated with a combination of a measurement target setting and a measurement report setting.

[0055] In this operation example, the RRC message includes a plurality of measurement configurations. Each of the plurality of measurement configurations includes one measurement gap configuration and at least one measurement identifier associated with the measurement gap configuration. As shown in FIGS. 8 and 9, each of the plurality of measurement configurations includes a set of one measurement gap configuration and a list of measurement identifiers. Thereby, one measurement gap configuration is associated with each measurement identifier in the list of measurement identifiers associated with the measurement gap configuration.

[0056] As shown in FIG. 9, the RRC message may include an existing measurement configuration (MeasConfig) separately from the list of measurement configurations (measConfigList). The existing measurement configuration may be treated as one of the plurality of measurement configurations. The measurement configurations in the list of measurement configurations may be treated as the second and subsequent measurement configurations. Alternatively, the existing measurement configuration may not be available when the RRC message includes a list of measurement configurations. Also, the existing measurement configuration may be available only when the UE 100 does not support the setting of a plurality of gap patterns. When the UE 100 supports the setting of a plurality of gap patterns, the existing measurement configuration may not be available.

[0057] Also, in this operation example, each of the plurality of measurement configurations (MeasConfig) included in the RRC message includes a measurement gap sharing configuration (MeasGapSharingConfig) in addition to the measurement gap configuration (MeasGapConfig) (see FIG. 4). Accordingly, the RRC message includes a set (MeasConfig) of each of the plurality of measurement gap configurations and the measurement gap sharing configuration. Thereby, in the RRC message, each of the plurality of measurement gap configurations is associated with the measurement gap sharing configuration.

[0058] The measurement gap sharing setting indicates the time ratio when a plurality of measurement targets share the measurement gap in a time-division manner. Also, the measurement gap sharing setting specifies a measurement gap sharing scheme. The measurement gap sharing setting may indicate, for example, any one of "scheme 00", "scheme 01", "scheme 10", and "scheme 11". "Scheme 00" indicates that the time ratio of the measurement for the first measurement target (hereinafter, the first measurement) and the time ratio of the measurement for the second measurement target (hereinafter, the 2 measurement) are the same, and may indicate that the priority of the first measurement and the priority of the second measurement are equal. "Scheme 01" may indicate, for example, that the X value used for calculating the time ratio is 25%, and may indicate that the priority of the first measurement (or the second measurement) is higher than the priority of the second measurement (or the first measurement). "Scheme 10" may indicate, for example, that the X value used for calculating the time ratio is 50%, and may indicate that the priority of the first measurement and the priority of the second measurement are equal. "Scheme 11" may indicate, for example, that the X value used for calculating the time ratio is 75%, and may indicate that the priority of the first measurement (or the second measurement) is lower than the priority of the second measurement (or the first measurement).

[0059] In step S102, the base station 200 (control unit 230) transmits an RRC message to the UE 100. The UE 100 (reception unit 112) receives the RRC message from the base station 200. The UE 100 (communication unit 110) performs settings based on a plurality of measurement settings.

[0060] In step S103, UE100 (control unit 120) performs measurements on the measurement target. Specifically, UE100 (control unit 120) performs measurements on the measurement target set based on the measurement target setting during the measurement gap set based on a plurality of measurement gap settings. UE100 (control unit 120) sets a plurality of gap patterns based on a plurality of measurement gap settings. Specifically, when UE100 (control unit 120) performs measurements on a predetermined measurement target, it performs measurements using a gap pattern based on the measurement gap setting associated with the measurement identifier associated with the predetermined measurement target. That is, when UE100 (control unit 120) performs measurements on the measurement target based on the measurement target setting included in any one of the plurality of measurement settings, it performs measurements during the measurement gap according to the gap pattern based on one measurement gap setting within the measurement setting.

[0061] Also, as shown in FIG. 10, when UE100 (control unit 120) communicates with base station 200 at the first frequency (serving cell), a case where a plurality of measurement targets share a measurement gap in a time division manner will be described. For example, UE100 (control unit 120) performs a first measurement on the measurement target at the second frequency and a second measurement on the measurement target at the third frequency during one measurement gap of the gap pattern based on one measurement gap setting.

[0062] Here, UE100 (control unit 120) calculates the time ratio when sharing the measurement gap in a time division manner based on the measurement gap sharing setting associated with the measurement gap setting (that is, the measurement gap sharing setting included in the same measurement setting as the measurement gap setting). Based on the calculated time ratio, UE100 (control unit 120) first performs the first measurement during the measurement gap, and performs the second measurement after the first measurement operation until the measurement gap ends.

[0063] Note that in this operation example, one measurement gap setting, the measurement target setting for the first measurement, and the measurement target setting for the second measurement are included in the same measurement setting.

[0064] In step S104, the UE 100 (communication unit 110) transmits a measurement report to the base station 200. The base station 200 receives the measurement report from the UE 100. The UE 100 transmits a measurement report to the base station 200 when the measurement report is triggered based on the measurement report setting.

[0065] As described above, in the RRC message, each of the plurality of measurement gap settings is associated with at least one measurement identifier. Thereby, the UE 100 (control unit 120) can perform measurements based on a measurement target setting associated with at least one measurement identifier during a measurement gap that constitutes a gap pattern based on the measurement gap setting associated with the measurement identifier. Therefore, even when a plurality of gap patterns are set, the UE 100 (control unit 120) can determine which measurement should be performed in which gap pattern. In addition, the base station 200 (control unit 230) can appropriately control the gap pattern that the UE 100 should use for measurement. As a result, when a plurality of gap patterns are set, appropriate measurements can be performed.

[0066] In addition, the RRC message includes a plurality of measurement settings. Each of the plurality of measurement settings includes one measurement gap setting and at least one measurement identifier associated with the measurement gap setting. Thereby, within each measurement setting, the measurement target is associated via the measurement gap setting and the measurement identifier, so the information structure within the measurement setting is the same as the existing measurement setting. Therefore, since only the measurement settings need to be listed, the impact on the technical specification can be reduced compared to the case of changing the information structure within the measurement setting.

[0067] Further, the base station 200 (control unit 230) generates an RRC message including a plurality of measurement gap settings. The base station 200 (communication unit 210) transmits the RRC message to the UE 100. The UE 100 (communication unit 110) receives an RRC message including a plurality of measurement gap settings from the base station 200. The UE 100 (control unit 120) performs measurements on a measurement target during a measurement gap set based on the plurality of measurement gap settings. In the RRC message, each of the plurality of measurement gap settings is associated with a measurement gap sharing setting indicating a time ratio when a plurality of measurement targets share the measurement gap in a time division manner. Thereby, the UE 100 (control unit 120) can apply the measurement gap sharing setting to a gap pattern (measurement gap) based on the measurement gap setting associated with the measurement gap sharing setting. As a result, even if the RRC message includes a plurality of measurement gap settings, the gap pattern to which the measurement gap sharing setting should be applied is known, and appropriate measurements can be performed. As a result, when a plurality of gap patterns are set, appropriate measurements become possible.

[0068] (2-1) Second operation example With reference to FIGS. 7 and 11 to 13, this operation example will be mainly described with differences from the above-described operation example. In this operation example, in the RRC message, each of the plurality of measurement gap settings is associated with a measurement gap identifier.

[0069] In step S101, the base station 200 (control unit 230) generates an RRC message in the same manner as in the above-described operation example. As shown in FIG. 12, the measurement configuration (MeasConfig) included in the RRC message includes a list (MeasGapToAddModList) of measurement gap settings to be added and / or changed. Note that the measurement configuration may include a list (MeasGapToRemoveList) of measurement gap identifiers to be deleted.

[0070] The list of measurement gap settings (MeasGapToAddModList) includes a set (MeasGapToAddMod) of a measurement gap identifier (MeasGapId) and a plurality of measurement gap settings (MeasGapConfig). The measurement gap identifier is used to identify the measurement gap settings. Thus, each of the plurality of measurement gap settings is associated with a measurement gap identifier.

[0071] Also, as shown in FIG. 12, the set (MeasGapToAddMod) further includes a measurement gap sharing setting (MeasGapSharingConfig). Therefore, the RRC message includes a set of each of the plurality of measurement gap settings and the measurement gap sharing setting. As a result, each of the plurality of measurement gap settings is associated with the measurement gap sharing setting.

[0072] The RRC message includes a set of a measurement identifier and a measurement gap identifier. As shown in FIGS. 11 and 13, in this operation example, the list of measurement identifiers (MeasIdToAddMod) includes a set (MeasIdToAddMod) of a measurement identifier (MeasId) and a measurement gap identifier (MeasGapId). The set further includes a measurement object identifier (MeasObjectId) and a reporting setting identifier (reportConfigId). Thereby, the measurement gap identifier is associated with the measurement identifier. As a result, each of the plurality of measurement settings is associated with the measurement identifier via the measurement gap identifier.

[0073] As shown in FIG. 12, the measurement configuration may include an existing measurement gap configuration (MeasGapConfig) separately from the list of measurement gap configurations. The existing measurement gap configuration may be treated as one of the plurality of measurement gap configurations. The measurement gap configuration in the list of measurement gap configurations may be treated as the second and subsequent measurement gap configurations. Alternatively, the existing measurement gap configuration may not be usable when the list of measurement gap configurations is included in the RRC message. Also, the existing measurement gap configuration may be usable only when the UE 100 does not support the setting of a plurality of gap patterns. When the UE 100 supports the setting of a plurality of gap patterns, the existing measurement gap configuration may not be usable.

[0074] Note that the base station 200 associates the measurement gap configuration with the measurement identifier so that each frequency layer is associated with only one gap pattern. Note that even for the same frequency layer, if the reference signals to be measured (for example, SSB, CSI-RS, PRS) are different, they may be treated as different frequency layers.

[0075] Step S102 is the same as the above-described operation example.

[0076] Step S103 is the same as the above-described operation example. The UE 100 (control unit 120) performs measurement on the measurement target based on the measurement target setting associated with the same measurement identifier via the measurement target identifier in the measurement gap that constitutes the gap pattern based on the measurement gap configuration associated with the measurement identifier in one set (MeasIdToAddMod) via the measurement gap identifier.

[0077] Also, when there are a plurality of measurement targets in one measurement gap, the UE 100 (control unit 120) can perform measurement on each measurement target during the measurement gap based on the measurement gap sharing configuration associated with the measurement gap configuration.

[0078] Step S104 is the same as the above-described operation example.

[0079] As described above, in the RRC message, each of a plurality of measurement gap settings may be associated with a measurement gap identifier. The measurement gap identifier may be associated with a measurement identifier. As a result, it is not necessary to include a plurality of measurement settings in the RRC message. Therefore, it is not necessary to include a plurality of redundant parameters included in the measurement settings, and it is possible to suppress a decrease in signaling efficiency.

[0080] Also, the RRC message may include a set of a measurement identifier and a measurement gap identifier. As a result, the UE 100 (control unit 120) knows that each of the plurality of measurement gap settings is associated with the measurement identifier via the measurement gap identifier. Therefore, even if a plurality of gap patterns are set, the UE 100 can determine which measurement should be performed with which gap pattern. Also, the base station 200 can appropriately control the gap pattern that the UE 100 should use for measurement. As a result, when a plurality of gap patterns are set, appropriate measurement is possible.

[0081] Also, the RRC message may include a set of each of a plurality of measurement gap settings and a measurement gap sharing setting. As a result, since the measurement gap sharing setting applied for each measurement gap setting can be changed, the measurement of the UE 100 can be flexibly controlled. As a result, when a plurality of gap patterns are set, appropriate measurement is possible.

[0082] (2-2) First modification example of the second operation example Referring to FIGS. 14 and 15, the first modification example of the second operation example will be mainly described in terms of differences from the above-described operation example.

[0083] As shown in FIG. 14, the measurement configuration (MeasConfig) included in the RRC message includes a list of measurement gap sharing configurations to be added and / or modified (MeasGapSharingToAddModList). Note that the measurement configuration may include a list of measurement gap sharing identifiers (MeasGapSharingToRemoveList) that identify the measurement gap sharing configurations to be deleted.

[0084] As shown in FIG. 15, the list of measurement gap sharing configurations (MeasGapSharingToAddModList) includes a set of each of a plurality of measurement gap sharing configurations (MeasGapSharingConfig) and a measurement gap sharing identifier (MeasGapSharingId). Thereby, each of the plurality of measurement gap configurations is associated with a measurement gap sharing identifier that identifies the corresponding measurement gap sharing configuration.

[0085] Also, the list of measurement identifiers (MeasIdToAddModList) includes a set (MeasIdToAddMod) of a measurement identifier, a measurement target identifier, a reporting configuration identifier, a measurement gap identifier, and a measurement gap sharing identifier. Therefore, the measurement gap identifier is associated with the measurement gap sharing identifier. As a result, each of the plurality of measurement gap configurations is associated with the measurement gap sharing configuration via the measurement gap identifier and the measurement gap sharing identifier. Thereby, even if the RRC message includes a plurality of measurement gap configurations, the UE 100 (control unit 120) can know the gap pattern to which the measurement gap sharing configuration should be applied and perform appropriate measurements. As a result, appropriate measurements are possible when a plurality of gap patterns are set. Also, since the measurement gap sharing configuration applied for each measurement gap configuration can be changed, the measurements of the UE 100 can be flexibly controlled.

[0086] (2-3) Second Modification Example of the Second Operation Example Regarding the second modification example of the second operation example, the differences from the above-described operation example will be mainly described.

[0087] In the RRC message, all of the multiple measurement gap settings may be associated with one and the same measurement gap sharing setting. Specifically, the measurement configuration (MeasConfig) may include only one measurement gap sharing setting. Thereby, even if a plurality of gap patterns based on the multiple measurement gap settings are set, the UE 100 (control unit 120) can share the measurement gaps in a time division manner based on the same measurement gap sharing setting. As a result, since it is not necessary to include a plurality of measurement gap sharing settings in the RRC message, the amount of information included in the RRC message can be reduced.

[0088] (3) Third operation example Referring to FIGS. 7, 16, and 17, the third operation example will be mainly described in terms of differences from the above-described operation examples. In the third operation example, each of the multiple measurement report settings includes a measurement gap identifier.

[0089] In step S101, the base station 200 (control unit 230) generates an RRC message in the same manner as in the above-described operation example. The RRC message includes a plurality of measurement report settings configured by the measurement report settings. Specifically, the measurement configuration (MeasConfig) in the RRC message includes a list (ReportConfigToAddModList) of measurement report settings. Further, the RRC message includes a list (MeasGapToAddModList) of measurement gap settings in the same manner as in the second operation example.

[0090] As shown in FIGS. 16 and 17, each of the multiple measurement report settings includes a measurement gap identifier. Specifically, the measurement report setting includes a set of a report type (reportType) indicating the type of the measurement report setting and a measurement gap identifier (MeasGapId). Thereby, the measurement gap identifier is associated with the measurement identifier via the measurement report identifier associated with the measurement report setting including the measurement gap identifier. As a result, each of the multiple measurement settings is associated with the measurement identifier via the measurement gap identifier.

[0091] Note that the measurement gap sharing setting may be included in the RRC message, similar to any of the above-described operation examples.

[0092] Step S102 is the same as the above-described operation example.

[0093] Step S103 is the same as the above-described operation example. UE100 (control unit 120) performs measurement on the measurement target based on the measurement target setting associated with the same measurement identifier via the measurement target identifier within the measurement gap that constitutes the gap pattern based on the measurement gap setting associated with the measurement identifier via the reporting setting identifier and the measurement gap identifier.

[0094] Step S104 is the same as the above-described operation example.

[0095] As described above, the RRC message may include a plurality of measurement report settings configured by the measurement report setting. Each of the plurality of measurement report settings may include a measurement gap identifier. Each of the plurality of measurement gap settings is associated with the measurement identifier via the reporting setting identifier and the measurement gap identifier. Therefore, even if a plurality of gap patterns are set, UE100 can determine which measurement should be performed with which gap pattern. Also, the base station 200 can appropriately control the gap pattern that UE100 should use for measurement. As a result, appropriate measurement becomes possible when a plurality of gap patterns are set.

[0096] (4) Fourth operation example Referring to FIGS. 7, 18, and 19, the fourth operation example will be mainly described in terms of differences from the above-described operation examples. In the fourth operation example, each of the plurality of measurement target settings includes a measurement gap identifier.

[0097] In step S101, the base station 200 (control unit 230) generates an RRC message in the same manner as in the above-described operation example. The RRC message includes a plurality of measurement target settings configured by measurement target settings. Specifically, the measurement settings (MeasConfig) in the RRC message include a list of measurement targets (MeasObjectToAddModList). Also, the RRC message includes a list of measurement gap settings (MeasGapToAddModList) in the same manner as in the second operation example.

[0098] As shown in FIGS. 18 and 19, each of the plurality of measurement target settings includes a measurement gap identifier. Specifically, the measurement target setting (MeasObjectNR) includes a set of measurement target information (e.g., ssbFrequency, ssbSubcarrierSpacing, smtc1, smtc2, refFreqCSI-RS, referenceSignalConfig, etc.) and a measurement gap identifier. Thereby, the measurement gap identifier is associated with the measurement identifier via the measurement target identifier associated with the measurement target setting including the measurement gap identifier. As a result, each of the plurality of measurement settings is associated with the measurement identifier via the measurement gap identifier.

[0099] Note that the measurement gap sharing setting may be included in the RRC message in the same manner as in any of the above-described operation examples.

[0100] Step S102 is the same as in the above-described operation example.

[0101] Step S103 is the same as in the above-described operation example. The UE 100 (control unit 120) performs measurement on the measurement target based on the measurement target setting associated with the measurement target identifier included in the same measurement target setting within the measurement gap that configures the gap pattern based on the measurement gap setting associated with the measurement gap identifier included in the measurement target setting.

[0102] Step S104 is the same as in the above-described operation example.

[0103] As described above, the RRC message may include a plurality of measurement object settings configured by measurement object settings. Each of the plurality of measurement object settings may include a measurement gap identifier. Each of the plurality of measurement gap settings is associated with a measurement identifier via a measurement object identifier and a measurement gap identifier. In addition, each of the plurality of measurement gap settings is associated with a measurement object setting within the same measurement object setting via a measurement gap identifier. Therefore, even if a plurality of gap patterns are set, the UE 100 can determine which measurement should be performed with which gap pattern. In addition, the base station 200 can appropriately control the gap pattern that the UE 100 should use for measurement. As a result, appropriate measurement is possible when a plurality of gap patterns are set.

[0104] In addition, since one measurement gap setting is associated with one measurement object setting, each frequency layer can be associated with only one gap pattern.

[0105] (5) Fifth operation example With reference to FIGS. 7 and 20, the fifth operation example will be mainly described with differences from the above-described operation examples. In the fifth operation example, the measurement gap identifier is independently set for the measurement object setting for the first reference signal and the measurement object setting for the second reference signal.

[0106] In step S101, the base station 200 (control unit 230) generates an RRC message in the same manner as in the above-described operation example. The RRC message includes a list of measurement objects (MeasObjectToAddModList) and a list of measurement gap settings (MeasGapToAddModList) as in the fourth operation example.

[0107] As shown in FIG. 20, each of the plurality of measurement target settings may include measurement target settings for a plurality of reference signals (i.e., measurement target information). For example, each of the plurality of measurement target settings may include measurement target settings for a first reference signal (e.g., SSB) (e.g., ssbFrequency, ssbSubcarrierSpacing, smtc1, smtc2, etc.) and a second 2 measurement target settings for a reference signal (e.g., CSI-RS) (e.g., refFreqCSI-RS, etc.).

[0108] In addition, each of the plurality of measurement target settings includes a measurement gap identifier. The measurement gap identifier is set independently for each of the plurality of reference signals. Specifically, the measurement gap identifier is set independently for the measurement target setting for the first reference signal and the measurement target setting for the second reference signal. As shown in FIG. 20, for example, for the measurement target setting for SSB, a measurement gap identifier for SSB (measGapIdSsb) is set, and for the measurement target setting for CSI-RS, a measurement gap identifier for CSI-RS (measGapIdCSI-RS) is set.

[0109] Note that the measurement gap sharing setting may be included in the RRC message in the same manner as any of the above-described operation examples.

[0110] Step S102 is the same as the above-described operation example.

[0111] Step S103 is the same as the above-described operation example. UE100 (control unit 120) performs measurements on the measurement target based on the measurement target setting for the first reference signal associated with the measurement target identifier included in the same measurement target setting during the measurement gap that constitutes the gap pattern based on the measurement gap setting associated with the measurement gap identifier for the first reference signal. Similarly, UE100 (control unit 120) performs measurements on the measurement target based on the measurement target setting for the second reference signal associated with the measurement target identifier included in the same measurement target setting during the measurement gap that constitutes the gap pattern based on the measurement gap setting associated with the measurement gap identifier for the second reference signal.

[0112] Step S104 is the same as the above-described operation example.

[0113] As described above, each of the plurality of measurement target settings may further include a measurement target setting for the first reference signal and a measurement target setting for the second reference signal. The measurement gap identifier may be set independently for the measurement target setting for the first reference signal and the measurement target setting for the second reference signal. Thereby, while associating one measurement gap setting with one measurement target setting, different measurement gap settings can be applied for each reference signal to be measured.

[0114] (Other Embodiments) In the above-described embodiments, in the second to fifth operation examples, the measurement gap identifier was associated with the measurement identifier, but it is not limited thereto. Instead of the measurement gap identifier, the measurement gap setting itself may be associated with the measurement identifier. Therefore, the measurement gap identifier may be replaced with the measurement gap setting. In this case, the measurement setting can be configured not to include a list (MeasGapToAddModList) of measurement gap settings to be added and / or changed. Also, the measurement setting may include a list of measurement gap settings to be deleted instead of a list (MeasGapToRemoveList) of measurement gap identifiers to be deleted.

[0115] Also, in the third operation example, each of a plurality of measurement report configurations (ReportConfigNR) included a measurement gap identifier (MeasGapId), but it is not limited to this. For example, within a list of measurement report configurations (ReportConfigToAddModList), each measurement report configuration (ReportConfigToAddMod), which is an information element higher than the measurement report configuration (ReportConfigNR), may be associated with a measurement gap identifier (MeasGapId) or a measurement gap configuration (MeasGapConfig). For example, the list of measurement report configurations may include a set of a measurement report configuration (ReportConfigToAddMod) and a measurement gap identifier (MeasGapId) or a measurement gap configuration (MeasGapConfig). The measurement report configuration (ReportConfigToAddMod) may include a measurement gap identifier (MeasGapId) or a measurement gap configuration (MeasGapConfig) outside the measurement report configuration (ReportConfigNR).

[0116] Also, in the fourth and fifth operation examples, each of a plurality of measurement object configurations (MeasObjectNR) included a measurement gap identifier (MeasGapId), but it is not limited to this. For example, within a list of measurement object configurations (MeasObjectToAddModList), each measurement object configuration (MeasObjectToAddMod), which is an information element higher than the measurement object configuration (MeasObjectNR), may be associated with a measurement gap identifier (MeasGapId) or a measurement gap configuration (MeasGapConfig). For example, the list of measurement object configurations may include a set of a measurement object configuration (MeasObjectToAddMod) and a measurement gap identifier (MeasGapId) or a measurement gap configuration (MeasGapConfig). The measurement object configuration (MeasObjectToAddMod) may include a measurement gap identifier (MeasGapId) or a measurement gap configuration (MeasGapConfig) outside the measurement object configuration (MeasObjectNR).

[0117] The operation sequence (and operation flow) in the above-described embodiments does not necessarily have to be executed in time series in accordance with the order described in the flowchart or sequence diagram. For example, the steps in the operation may be executed in an order different from the order described as the flowchart or sequence diagram, or may be executed in parallel. Also, some of the steps in the operation may be deleted, and additional steps may be added to the process. Further, the operation sequence (and operation flow) in the above-described embodiments may be implemented separately and independently, or two or more operation sequences (and operation flows) may be combined and implemented. For example, some steps of one operation flow may be added to another operation flow, or some steps of one operation flow may be replaced with some steps of another operation flow.

[0118] In the above-described embodiment, the mobile communication system 1 has been described by taking a mobile communication system based on NR as an example. However, the mobile communication system 1 is not limited to this example. The mobile communication system 1 may be a system compliant with any one of LTE (Long Term Evolution) or other generation systems of the 3GPP standard (for example, the sixth generation). The base station 200 may be an eNB that provides E-UTRA user plane and control plane protocol termination to the UE 100 in LTE. The mobile communication system 1 may be a system compliant with a TS of a standard other than the 3GPP standard. The base station 200 may be an IAB (Integrated Access and Backhaul) donor or an IAB node.

[0119] A program may be provided that causes a computer to execute each process performed by the UE 100 or the base station 200. The program may be recorded on a computer-readable medium. By using a computer-readable medium, it is possible to install the program in a computer. Here, the computer-readable medium on which the program is recorded may be a non-transitory recording medium. The non-transitory recording medium is not particularly limited, and may be, for example, a recording medium such as a CD-ROM (Compact Disk Read Only Memory) or a DVD-ROM (Digital Versatile Disc Read Only Memory). Further, a circuit that executes each process performed by the UE 100 or the base station 200 may be integrated, and at least a part of the UE 100 or the base station 200 may be configured as a semiconductor integrated circuit (chip set, SoC (System On Chip)).

[0120] In the above embodiments, "transmit" may mean performing processing on at least one layer within the protocol stack used for transmission, or may mean physically transmitting a signal wirelessly or via wire. Alternatively, "transmit" may mean a combination of performing the processing on the at least one layer and physically transmitting a signal wirelessly or via wire. Similarly, "receive" may mean performing processing on at least one layer within the protocol stack used for reception, or may mean physically receiving a signal wirelessly or via wire. Alternatively, "receive" may mean a combination of performing the processing on the at least one layer and physically receiving a signal wirelessly or via wire. Similarly, "obtain / acquire" may mean obtaining information from stored information, may mean obtaining information from information received from other nodes, or may mean obtaining the information by generating the information. Similarly, the descriptions "based on" and "depending on / in response to" do not mean "only based on" and "only in response to" unless otherwise specified. The description "based on" means both "only based on" and "at least partially based on". Similarly, the description "depending on" means both "only depending on" and "at least partially depending on". Similarly, "include" and "comprise" do not mean including only the listed items, and may mean including only the listed items or may mean including additional items in addition to the listed items. Similarly, in the present disclosure, "or" does not mean exclusive disjunction and means disjunction. Further, any reference to elements using designations such as "first", "second", etc. used in the present disclosure does not generally limit the quantity or order of those elements. These designations may be used in the present disclosure as a convenient way to distinguish between two or more elements.Accordingly, references to the first and second elements do not mean that only two elements can be employed there, or that the first element must precede the second element in some form. In this disclosure, for example, when articles are added by translation, such as a, an, and the in English, these articles shall be construed to include pluralities unless the context clearly indicates otherwise.

[0121] This disclosure has been described with reference to embodiments, but it is understood that the disclosure is not limited to these embodiments and structures. This disclosure also encompasses various modifications and variations within the equivalent scope. In addition, various combinations and forms, as well as other combinations and forms including only one element, more than one element, or less than one element thereof, fall within the scope and spirit of this disclosure.

[0122] (Appendix) The features regarding the above-described embodiments are appended.

[0123] (Appendix 1) A communication unit that receives a Radio Resource Control (RRC) message including a plurality of measurement gap settings from a network, A control unit that performs measurements on a measurement target during each measurement gap set based on the plurality of measurement gap settings, and The RRC message includes a measurement gap sharing setting associated with each of the plurality of measurement gaps and specifying a measurement gap sharing scheme A communication device.

[0124] (Appendix 2) The RRC message includes a set of each of the plurality of measurement gap settings and the measurement gap sharing setting The communication device according to Appendix 1.

[0125] (Appendix 3) The measurement gap sharing setting indicates a time ratio when a plurality of measurement targets share the measurement gap in a time-division manner The communication device according to Appendix 1 or 2.

[0126] (Appendix 4) The control unit performs the measurement based on the measurement gap sharing setting. The communication device according to any one of Appendices 1 to 3.

[0127] (Appendix 5) A communication unit that transmits a radio resource control (RRC) message including a plurality of measurement gap settings to a communication device, The RRC message includes a measurement gap sharing setting that is associated with each of the plurality of measurement gaps and specifies a measurement gap sharing scheme. Base station.

[0128] (Appendix 6) A communication method executed by a communication device, Receiving, from a network, a radio resource control (RRC) message including a plurality of measurement gap settings; Performing a measurement on a measurement target during each measurement gap set based on the plurality of measurement gap settings. The RRC message includes a measurement gap sharing setting that is associated with each of the plurality of measurement gaps and specifies a measurement gap sharing scheme. Communication method.

Claims

A receiving unit (112) that receives, from a base station (200) using a radio resource control (RRC) message, a measurement setting including first information used to set one measurement target included in a list of measurement targets to be added, and second information used to set each of a plurality of gap patterns, the second information including information indicating a repetition period of a measurement gap and information indicating an offset of the gap pattern associated with the repetition period of the measurement gap. A control unit (120) that executes measurement based on the SSB in a measurement gap of one of the plurality of gap patterns based on information indicating a measured synchronization signal and a physical broadcast channel block (SSB) included in the first information, and a first measurement gap identifier indicating a measurement gap for measurement based on the SSB included in the first information; and executes measurement based on the CSI-RS in a measurement gap of one of the plurality of gap patterns based on information indicating a measured channel state information reference signal (CSI-RS) included in the first information, and a second measurement gap identifier indicating a measurement gap for measurement based on the CSI-RS included in the first information. The receiving unit receives, from the base station, information indicating a measurement gap sharing scheme applied to each of the plurality of gap patterns set using the second information. Based on reception of the information indicating the measurement gap sharing scheme, the control unit executes measurement based on the measurement gap sharing scheme. A communication device.

2. The information indicating the SSB includes information indicating the frequency of the SSB. The communication device according to claim 1. A transmitting unit (211) that transmits, to a communication device (100) using a radio resource control (RRC) message, a measurement setting including first information used to set one measurement target included in a list of measurement targets to be added, and second information used to set each of a plurality of gap patterns, the second information including information indicating a repetition period of a measurement gap and information indicating an offset of the gap pattern associated with the repetition period of the measurement gap. Receive, from the communication device, a measurement report based on the SSB measured in a measurement gap of one of the plurality of gap patterns, based on information indicating the measured synchronization signal and the physical broadcast channel block (SSB) included in the first information, and a first measurement gap identifier indicating a measurement gap for measurement based on the SSB included in the first information, and receive, from the communication device, a measurement report based on the CSI-RS measured in a measurement gap of one of the plurality of gap patterns, based on information indicating the measured channel state information reference signal (CSI-RS) included in the first information, and a second measurement gap identifier indicating a measurement gap for measurement based on the CSI-RS included in the first information. A receiving unit (212); The transmitting unit transmits, to the communication device, information indicating a measurement gap sharing scheme applied to each of the plurality of gap patterns set using the second information. The receiving unit receives, from the communication device, a measurement report based on the measurement gap sharing scheme, based on the transmission of the information indicating the measurement gap sharing scheme. Base station.

4. The information indicating the SSB includes information indicating the frequency of the SSB. The base station according to claim 3.

5. A communication method executed by a communication device (100), comprising: receiving, from a base station (200), a measurement setting including first information used to set one measurement target included in a list of additional measurement targets, and second information used to set each of a plurality of gap patterns, the second information including information indicating a repetition period of a measurement gap and information indicating an offset of the gap pattern with the repetition period of the measurement gap, using a radio resource control (RRC) message; Based on information indicating the measured synchronization signal and the physical broadcast channel block (SSB) included in the first information, and a first measurement gap identifier indicating a measurement gap for measurement based on the SSB included in the first information, executing a measurement based on the SSB in the measurement gap of one of the plurality of gap patterns. ​ Based on the information indicating the measured channel state information reference signal (CSI-RS) included in the first information and the second measurement gap identifier indicating a measurement gap for measurement based on the CSI-RS included in the first information, performing a measurement based on the CSI-RS in a measurement gap of one of the plurality of gap patterns; Receiving, from the base station, information indicating a measurement gap sharing scheme applied to each of the plurality of gap patterns set using the second information; Based on the reception of the information indicating the measurement gap sharing scheme, performing a measurement based on the measurement gap sharing scheme. Communication method. According to claim 6, the information indicating the SSB includes information indicating the frequency of the SSB. The communication method according to claim 5.

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