Cell and beam activation for L1 measurement

Abstract

This disclosure relates to user equipment, base station equipment, and methods for user equipment and base stations. More specifically, the user equipment comprises a receiver and a circuit. When operating, the receiver receives a first instruction specifying one or more measurement targets, each of which includes one or more beams. When operating, the circuit acquires a set of measurement targets including one or more measurement targets, acquires a subset of measurement targets from the set of measurement targets based on the received first instruction, and performs beam measurements of the beams included in the acquired subset of measurement targets.

Description

[Background technology]

[0001] 1. Technical field This disclosure relates to the transmission and reception of signals in communication systems. In particular, this disclosure relates to methods and apparatus for such transmission and reception.

[0002] 2. Explanation of related technologies 3GPP® is working on the technical specifications for next-generation cellular technologies (also known as 5G) that include New Radio Access Technology (NR), which operates in the frequency range up to 100 GHz. NR is the successor to technologies such as Long Term Evolution (LTE) and LTE Advanced (LTE-A).

[0003] In systems such as LTE and NR, further improvements and options can facilitate the efficient operation of the communication system and specific devices related to it. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 38.300 v15.6.0 [Non-Patent Document 2] 3GPP TS 38.211 [Non-Patent Document 3] 3GPP TR 38.913 [Non-Patent Document 4] 3GPP TS 23.501 [Non-Patent Document 5] 3GPP TS 38.214 v17.3.0 [Non-Patent Document 6] 3GPP TS 38.401 v17.3.0 [Non-Patent Document 7] 3GPP TS 38.473 v17.3.0 [Non-Patent Document 8] 3GPP TS 38.213 v17.4.0 [Non-Patent Document 9] 3GPP TS 38.212 v17.4.0 [Non-Patent Document 10] 3GPP TS 38.331 [Non-Patent Document 11] ITU-R M.2083 [Summary of the Invention]

[0005] One non-limiting and exemplary embodiment facilitates a user equipment to perform improved beam measurements.

[0006] In one embodiment, the technology of the present disclosure features an apparatus (e.g., a user equipment (UE)). The apparatus includes a receiving unit and a circuit. More specifically, the user equipment includes a receiving unit and a circuit. The receiving unit receives, during operation, a first instruction specifying one or more measurement targets, each of the measurement targets including one or more beams. The circuit obtains, during operation, a set of measurement targets, the set of measurement targets including one or more measurement targets, and obtains a subset of the measurement targets from the set of measurement targets based on the received first instruction, and performs beam measurements on the beams included in the measurement targets of the obtained subset of the measurement targets.

[0007] Note that a general embodiment or a specific embodiment can be implemented as a system, a method, an integrated circuit, a computer program, a storage medium, or any optional combination thereof. For example, the integrated circuit can control the processing of the UE or the network node.

[0008] Further advantages and effects of one embodiment of this disclosure will be made apparent from the specification and drawings. Such advantages and / or effects are provided by several embodiments and features described in the specification and drawings, but not all of them are necessarily provided in order to obtain one or more identical features.

[0009] The following exemplary embodiments will be described in more detail with reference to the attached drawings. [Brief explanation of the drawing]

[0010] [Figure 1] Diagram showing a schematic architecture of the 3GPP NR system. [Figure 2] Schematic diagram showing the functional separation between NG-RAN and 5GC. [Figure 3] Sequence diagram of the RRC connection setup / reconfiguration procedure [Figure 4] Schematic diagram illustrating usage scenarios for Extended Mobile Broadband (eMBB), Massive Machine Type Communications (mMTC), and Ultra-Reliable Low-Latency Communications (URLLC). [Figure 5] Block diagram illustrating an exemplary 5G system architecture for a non-roaming scenario. [Figure 6] This diagram illustrates a partitioned gNB architecture in which a gNB is divided into a gNB central unit and one or more gNB distributed units. [Figure 7] A diagram showing a simplified exemplary implementation of a set of synchronization signal blocks distributed across half a frame. [Figure 8] A diagram showing several beams and their corresponding SSB indices, illustrating how the beams are transmitted by gNB in ​​a beam sweeping scheme. [Figure 9] This diagram shows a simplified signaling diagram for switching lower layer cells within a Duty Unit (DU). [Figure 10] Block diagram showing an exemplary functional configuration of base station and user equipment. [Figure 11]Figure 10 is a block diagram showing an exemplary functional structure of a circuit that processes the acquisition of a measurement target, which may be included in an exemplary user device. [Figure 12] Figure 10 is a block diagram showing an exemplary functional structure of a measurement target setting circuit that may be included in an exemplary base station device. [Figure 13] A flowchart illustrating exemplary steps performed by the user's device. [Figure 14] A flowchart illustrating exemplary steps performed by a base station. [Figure 15] A diagram illustrating MAC-CE as the first instruction for specifying an activated SSB beam. [Figure 16] A diagram illustrating MAC-CE as the first instruction for specifying an activated CSI-RS beam. [Figure 17] A diagram illustrating MAC-CE as a first instruction for specifying activated or deactivated cells. [Figure 18] A diagram illustrating MAC-CE as a first instruction, specifying activated or deactivated cells and including instructions for activation or deactivation. [Modes for carrying out the invention]

[0011] <5G NR System Architecture and Protocol Stack> 3GPP is working on the next release of fifth-generation cellular technology (simply called "5G"), which will include the development of a new radio access technology (NR) that will operate at frequencies up to 100 GHz. The first version of the 5G standard will be completed at the end of 2017, which will allow for testing and commercial deployment of smartphones compliant with the 5G NR standard.

[0012] In particular, the overall system architecture envisions an NG-RAN (Next Generation Radio Access Network) with gNBs, which terminate the NG radio access user plane (SDAP / PDCP / RLC / MAC / PHY) protocols and control plane (Radio Resource Control (RRC) protocol) towards the UE. The gNBs are interconnected with each other via the Xn interface. Furthermore, the gNBs are connected to the NGC (Next Generation Core) via the Next Generation (NG) interface, more specifically to the AMF (Access and Mobility Management Function) (e.g., a specific core entity that performs the AMF) via the NG-C interface, and to the UPF (User Plane Function) (e.g., a specific core entity that performs the UPF) via the NG-U interface. The NG-RAN architecture is shown in Figure 1 (see, for example, Section 4 of Non-Patent Document 1).

[0013] The user plane protocol stack in NR (see, for example, Section 4.4.1 of Non-Patent Document 1) includes the PDCP (Paper Data Convergence Protocol, see Section 6.4 of Non-Patent Document 1) sublayer, the RLC (Radio Link Control, see Section 6.3 of Non-Patent Document 1) sublayer, and the MAC (Medium Access Control, see Section 6.2 of Non-Patent Document 1) sublayer, all of which terminate at the gNB on the network side. In addition, a new access layer (AS) sublayer (SDAP, Service Data Adaptation Protocol) is introduced on top of PDCP (see, for example, Section 6.5 of Non-Patent Document 1). A control plane protocol stack is also defined in NR (see, for example, Section 4.4.2 of Non-Patent Document 1). An overview of the Layer 2 functions is described in Section 6 of Non-Patent Document 1. The functions of the PDCP, RLC, and MAC sublayers are described in sections 6.4, 6.3, and 6.2 of Non-Patent Document 1, respectively. The function of the RRC layer is described in section 7 of Non-Patent Document 1.

[0014] For example, the Medium Access Control (MAC) layer handles scheduling and scheduling-related functions, including logical channel multiplexing and processing of various numerologies.

[0015] The Physical Layer (PHY) is responsible for, for example, encoding, PHY HARQ processing, modulation, multi-antenna processing, and mapping signals to appropriate physical time-frequency resources. The Physical Layer also handles the mapping of transport channels to physical channels. The Physical Layer provides services to the MAC layer in the form of transport channels. A physical channel corresponds to a set of time-frequency resources used for transmitting a particular transport channel, and each transport channel is mapped to a corresponding physical channel. For example, physical channels include PRACH (Physical Random Access Channel), PUSCH (Physical Uplink Shared Channel), and PUCCH (Physical Uplink Control Channel) for uplinks, and PDSCH (Physical Downlink Shared Channel), PDCCH (Physical Downlink Control Channel), and PBCH (Physical Broadcast Channel) for downlinks.

[0016] NR use cases / deployment scenarios include enhanced mobile broadband (eMBB), ultra-high reliability, low latency (URLLC), and / or massive machine-type communications (mMTC), and these services have diverse requirements regarding data rate, latency, and coverage. For example, eMBB is expected to support peak data rates of the order of three times that provided by IMT-Advanced (20 Gbps downlink and 10 Gbps uplink) and user-perceived data rates. URLLC, on the other hand, has more stringent requirements, including extremely low latency (user plane latency of 0.5 ms for both UL and DL) and high reliability (1-10 ms within 1 ms). ‐5) and are imposed. Furthermore, in mMTC, a high connection density (1km in urban environments) is required. 2 Preferably, a capacity of 1,000,000 devices per unit, wide coverage in harsh environments, and extremely long-life batteries (15 years) to reduce device costs may be required.

[0017] Therefore, OFDM numerology suitable for one use case (e.g., subcarrier spacing, OFDM symbol length, cyclic prefix (CP) length, number of symbols per scheduling interval) may not work well for another use case. For example, low-latency services may prefer shorter symbol lengths (and thus larger subcarrier spacings) and / or fewer symbols per scheduling interval (also known as TTI) than mMTC services. Furthermore, in configuration scenarios with large channel delay spreads, longer CP lengths may be preferred than in scenarios with shorter delay spreads. To maintain a similar level of CP overhead, the subcarrier spacing should be optimized according to the delay spread. NR may support two or more values ​​for subcarrier spacing. Therefore, currently, subcarrier spacings of 15kHz, 30kHz, 60kHz, ... are being considered. Symbol length T u The subcarrier spacing Δf is given by the equation (Δf = 1 / T u This is directly related. As with LTE systems, the term "resource element" can be used to represent the smallest resource unit consisting of one subcarrier for the length of one OFDM / SC-FDMA symbol.

[0018] In the new radio system 5G-NR, for each numerology and carrier, a resource grid of subcarriers and OFDM symbols is defined for each of the uplink and downlink. Each element in the resource grid is called a resource element and is identified based on the frequency index in the frequency domain and the symbol position in the time domain (see, for example, v15.6.0 of Non-Patent Document 2). For example, downlink transmission and uplink transmission are set in a frame having a time length of 10 ms. Each frame consists of 10 subframes each having a time length of 1 ms. In the implementation of 5G NR, the number of consecutive OFDM symbols per subframe depends on the setting of the subcarrier spacing. For example, in the case of a subcarrier spacing of 15 kHz, the subframe has 14 OFDM symbols (assuming a normal cyclic prefix, similar to an LTE-compliant implementation). On the other hand, in the case of a subcarrier spacing of 30 kHz, the subframe has two slots, and each slot contains 14 OFDM symbols.

[0019] NR supports a plurality of different types of subcarrier spacings labeled by the parameter μ as compared to the new numerology (subcarrier spacing and symbol length) of LTE (in LTE, only a subcarrier spacing of 15 kHz, which corresponds to μ = 0 in NR). The types of NR new numerology are summarized in Non-Patent Document 2 v15.7.0.

[0020] <Functional split of 5G NR functions between NG-RAN and 5GC> Figure 2 shows the functional split between NG-RAN and 5GC. The logical nodes of NG-RAN are gNB or ng-eNB. The logical nodes of 5GC are AMF, UPF, and SMF.

[0021] In particular, gNB and ng-eNB process the following main functions. — Radio Resource Management functions such as Radio Bearer Control, Radio Admission Control, Connection Mobility Control, and dynamic resource allocation (scheduling) to UEs in both uplink and downlink directions. — Compression, encryption, and integrity protection of the IP header of the data. — Selection of AMF when UE attaches, when routing to AMF cannot be determined from the information provided by the UE. — Routing user plane data to UPF — Routing of control plane information to AMF — Establishing and releasing connections — Scheduling and sending paging messages — System broadcast information (scheduled and transmitted from AMF or OAM) — Setting up measurements and measurement reporting for mobility and scheduling — Transport-level packet marking on the uplink ― Session management — Support for network slicing — QoS flow management and mapping to data radio bearers — Support for UEs in the RRC_INACTIVE state — Non-Accessible Layer (NAS) message delivery function — Wireless access network sharing — Dual connectivity — Close interworking between NR and E-UTRA

[0022] The Access and Mobility Management Function (AMF) handles the following key functions: — Termination of Non-Access Layer (NAS) signaling — NAS signaling security — Access Layer (AS) Security Control — Core Network (CN) node-to-node signaling for mobility between 3GPP access networks — Reachability of idle mode UE (including control and execution of paging retransmissions) — Registration Area Management — Support for intra-system and inter-system mobility ― Access Authentication ― Access authentication including roaming rights checks — Mobility management and control (subscriptions and policies) — Support for network slicing — Selection of Session Management Function (SMF)

[0023] Furthermore, the User Plane Function (UPF) handles the following key functions: — Anchor points for mobility within / between RATs (when applicable) — External PDU session points for interconnection with data networks — Packet routing and forwarding — User plane portion of packet inspection and policy rule enforcement — Traffic usage report — Uplink classifier to support routing of traffic flow to data networks — Branching points to support multi-homed PDU sessions — User plane QoS processing (e.g., packet filtering, gating, UL / DL rate enforcement) - Verification of uplink traffic (mapping from SDF to QoS flow) - Downlink packet buffering and triggering of downlink data notification

[0024] Finally, the Session Management Function (SMF) processes the following main functions. - Session management - Allocation and management of UE IP addresses - Selection and control of the UP function - Configuration of traffic steering in the User Plane Function (UPF) for routing traffic to the correct destination - Policy enforcement and QoS control part - Downlink data notification

[0025] <Procedures for establishment and reconfiguration of RRC connection> Figure 3 shows the interactions among the UE, gNB, and AMF (5GC entity) in the NAS part when the UE transitions from RRC_IDLE to RRC_CONNECTED (see, for example, Non-Patent Document 1).

[0026] RRC is a higher-layer signaling protocol used for configuring UEs and gNBs. Specifically, in this transition, the AMF creates UE context data (including, for example, PDU session context, security keys, UE radio capabilities, UE security capabilities, etc.) and sends it to the gNB via an INITIAL CONTEXT SETUP REQUEST. The gNB then enables AS security with the UE, which is done by the gNB sending a SecurityModeCommand message to the UE, and the UE responding to the gNB with a SecurityModeComplete message. Subsequently, the gNB performs a reconfiguration to establish the Signaling Radio Bearer 2 (SRB2) and Data Radio Bearer (DRB), which is done by the gNB sending an RRCReconfiguration message to the UE, and the gNB receiving an RRCReconfigurationComplete from the UE in response. In the case of a signaling-only connection, SRB2 and DRB are not established, so these steps related to RRCReconfiguration are skipped. Finally, the gNB notifies the AMF that the establishment procedure is complete by sending an INITIAL CONTEXT SETUP RESPONSE.

[0027] Accordingly, this disclosure provides a fifth-generation core (5GC) entity (e.g., AMF or SMF) having a control circuit that, in operation, establishes a next-generation (NG) connection with a gNodeB so that a signaling radio bearer is established between the gNodeB and the user equipment (UE), and a transmitter that, in operation, sends an initial context setup message to the gNodeB via the NG connection. In particular, the gNodeB transmits radio resource control (RRC) signaling, including resource allocation setting information elements, to the UE via the signaling radio bearer. The UE then performs an uplink transmit or downlink receive based on this resource allocation setting.

[0028] <IMT Usage Scenarios from 2020 Onward> Figure 4 illustrates some use cases for 5G NR. The 3rd Generation Partnership Project NR (3GPP NR) considers three use cases envisioned to support a wide variety of services and applications through IMT-2020. Phase 1 specifications for Enhanced Mobile Broadband (eMBB) have been finalized. Current and future work includes further expanding eMBB support, as well as standardization for Ultra-Reliable Low-Latency Communications (URLLC) and Massive Machine-Type Communications (mMTC). Figure 4 shows some examples of IMT use scenarios envisioned for 2020 and beyond (see, for example, Figure 2 in Non-Patent Document 11).

[0029] URLLC use cases have stringent requirements regarding capabilities such as throughput, latency, and availability, and are envisioned as one means of realizing future vertical applications such as wireless control of industrial manufacturing or production processes, telemedicine surgery, power distribution automation in smart grids, and transportation safety. The ultra-high reliability of URLLC is supported by identifying the technology to meet the requirements set out in Non-Patent Document 3. For NR URLLC in Release 15, key requirements include a target user plane latency of 0.5 ms for UL (uplink) and 0.5 ms for DL ​​(downlink). Typical URLLC requirements for a single packet transmission are a BLER (block error rate) of 1E-5 for a packet size of 32 bytes with a user plane latency of 1 ms.

[0030] From a physical layer perspective, several ways to improve reliability are possible. Current approaches to reliability improvements include defining separate CQI tables for URLLC, a more compact DCI format, and PDCCH iterations. However, as NR becomes more stable and development progresses (regarding key requirements for NR URLLC), the scope for achieving ultra-high reliability may expand. Specific use cases for NR URLLC in Release 15 include augmented reality / virtual reality (AR / VR), e-health, e-safety, and mission-critical applications.

[0031] Furthermore, the technical enhancements targeted by NR URLLC aim to improve latency and reliability. Technical enhancements for improving latency include configurable numerology, non-slot-based scheduling using flexible mapping, grant-free (configured grant) uplink, slot-level iteration on data channels, and downlink preemption. Preemption means that a transmission for which resources have already been allocated is aborted, and the allocated resources are used for another transmission requested later with lower latency / higher priority requirements. Thus, a transmission that has already been permitted is preempted by a later transmission. Preemption applies regardless of the specific service type. For example, a transmission of service type A (URLLC) can be preempted by a transmission of service type B (e.g., eMBB). Technical enhancements for improving reliability include a dedicated CQI / MCS table for the 1E-5 target BLER.

[0032] The use case for mMTC (Massive Machine Type Communication) is characterized by a very large number of connected devices transmitting relatively small amounts of data, which are generally less affected by latency. These devices need to be low-cost and have extremely long battery life. From a noise reduction (NR) perspective, utilizing a very narrow bandwidth segment is one possible solution to achieve power savings from a UE perspective and enable long battery life.

[0033] As described above, the range of reliability in NR is expected to broaden. One important requirement in all cases, especially for URLLC and mMTC, is high or very high reliability. Several mechanisms can be considered to improve reliability from both a radio and network perspective. In general, there are several important areas that can help improve reliability. These areas include compact control channel information, data channel / control channel repetition, and diversity related to the frequency domain, time domain, and / or spatial domain. These areas are generally applicable to reliability regardless of the specific communication scenario.

[0034] Regarding NR URLLC, further use cases with more stringent requirements are envisioned, such as factory automation, transportation, and power distribution. These stringent requirements include higher reliability (up to 10%), depending on the use case. ‐6 The advantages include higher availability, a maximum packet size of 256 bytes, time synchronization on the order of a few microseconds (values ​​ranging from 1 to several microseconds depending on the frequency range), and low latency on the order of 0.5 to 1 ms (with a target latency of 0.5 ms specifically for the user plane).

[0035] Furthermore, for NR URLLC, several technical enhancements may be possible from the perspective of the physical layer. In particular, enhancements related to the PDCCH (Physical Downlink Control Channel) include compact DCI, repetition of the PDCCH, and increased PDCCH monitoring. Also, enhancements related to UCI (Uplink Control Information) include enhancements to HARQ (Hybrid Automatic Repeat Request) and CSI feedback. Additionally, enhancements to the PUSCH related to mini-slot level hopping and retransmission / repetition have also been recognized. The term "mini-slot" means a transmission time interval (TTI: Transmission Time Interval) with a smaller number of symbols than a slot (a slot contains, for example, 14 symbols).

[0036] <QoS Control> The 5G QoS (Quality of Service) model is based on QoS flows and supports both QoS flows that require a guaranteed flow bit rate (GBR QoS flows) and QoS flows that do not require a guaranteed flow bit rate (non-GBR QoS flows). Therefore, at the NAS level, the QoS flow is the finest granularity for QoS differentiation in a PDU session. A QoS flow is identified within a PDU session by a QoS flow ID (QFI) that is transmitted within the encapsulation header through the NG-U interface.

[0037] 5GC establishes one or more PDU sessions for each UE. NG-RAN establishes at least one Data Radio Bearer (DRB) with each PDU session for each UE, and can then configure additional DRBs for the QoS flow of that PDU session, as described above, for example with reference to Figure 3 (NG-RAN decides when to configure them). NG-RAN maps packets belonging to different PDU sessions to different DRBs. NAS-level packet filtering in the UE and 5GC associates UL and DL packets with QoS flows, and AS-level mapping rules in the UE and NG-RAN associate UL and DL QoS flows with DRBs.

[0038] Figure 5 shows the non-roaming reference architecture for 5G NR (see, for example, Section 4.2.3, v17.5.0, or v18.0.0 of Non-Patent Document 4 v16.9.0). An Application Function (AF) (for example, an external application server that handles 5G services as illustrated in Figure 4) interacts with the 3GPP Core Network for the purpose of providing services. For example, it may support the application's influence on traffic routing, access a Network Exposure Function (NEF), or interact with a policy framework for policy control (for example, QoS control) (see Policy Control Function (PCF)). Based on the operator's deployment, Application Functions (AFs) that are considered trusted by the operator may be allowed to interact directly with the relevant Network Functions. Application Functions (AFs) that are not authorized by the operator to directly access the Network Functions interact with the relevant Network Functions using an external exposure framework via the NEF.

[0039] Figure 5 shows further functional units of the 5G architecture, namely the Network Slice Selection Function (NSSF), Network Repository Function (NRF), Unified Data Management (UDM), Authentication Server Function (AUSF), Access and Mobility Management Function (AMF), Session Management Function (SMF), and Data Network (DN) (e.g., operator services, internet access, or third-party services). All or some of the core network functions and application services may be deployed and run in a cloud computing environment.

[0040] Accordingly, the disclosure provides an application server (e.g., AF in a 5G architecture) having: a transmitter that, when in operation, sends a request including QoS requirements for at least one of the URLLC service, eMMB service, and mMTC service to at least one of the 5GC functions (e.g., NEF, AMF, SMF, PCF, UPF, etc.) and establishes a PDU session including a radio bearer between the gNodeB and the UE in accordance with the QoS requirements; and a circuit that, when in operation, performs a service using the established PDU session.

[0041] <Status of the transmission setting indicator and quasi-co-location> According to Non-Patent Document 5, "Physical layer procedures for data (Release 17)," September 2022, two reference signals can have a quasi-co-located relationship. Two antenna ports are said to be in a quasi-co-located relationship if the characteristics of the channel carrying the symbols on one antenna port can be inferred from the channel carrying the symbols on the other antenna port.

[0042] In 5G NR systems, the Transmission Configuration Indication (TCI) state is used to establish a quasi-collocation (QCL) connection between the target reference signal (RS) and the source RS. Antenna port QCL types are defined as follows:

[0043] Type Description QCL-TypeA Doppler shift, Doppler spread, mean delay, delay spread QCL-TypeB Doppler Shift, Doppler Spread QCL-TypeC Doppler Shift, Mean Latency QCL‐TypeD Spatial Rx parameter The TCI (Telegraphic Coherence Indication) state is set for the PDCCH, PDSCH, and Channel State Information Reference Signal (CSI-RS) to transmit QCL (Quality Classification) indications for each RS (Rapid Signal). In frequency range 1 (FR1, below 7.125 GHz), QCL types A to C are applied, and in frequency range 2 (FR2, above 24.250 GHz), QCL types A to D are applied. QCL type D in FR2 indicates that the PDCCH / PDSCH / CSI-RS is transmitted with the same spatial filter as the reference signal associated with its TCI. In FR2, the network can indicate a change in the transmit beam of the PDSCH or PDCCH by switching the TCI state.

[0044] Each TCI state may include a TCI state identifier, a TCI state ID, and a set of RSs used for QCL reference, or one or more individual RSs. Each RS within a TCI state can be associated with one or more sets of Tx (transmit) beams and / or Rx (receive) beams.

[0045] <Partitioned gNB architecture> According to the 3GPP standard, a gNB can be divided into a gNB-CU (Central Unit) and one or more gNB-DUs (Distributed Units). This is shown in Figure 6.

[0046] gNB-CU is a logical node that provides support for the upper layers of the protocol stack, such as SDAP, PDCP, and RRC. On the other hand, gNB-DU is a logical node that provides support for the lower layers of the protocol stack, such as RLC, MAC, and the physical layer. Also, note that if the CU is connected to the 4G core network, the SDAP layer will not exist because the 5G core network is required to support the SDAP layer.

[0047] Therefore, the PHY layer and MAC layer are terminated with gNB-DU, and layer 3 (RRC) is terminated with gNB-CU.

[0048] There is one CU for each gNB. That is, one gNB-DU is connected to only one gNB-CU. Alternatively, for redundancy, a gNB-DU may be connected to multiple gNB-CUs. One gNB-CU may control multiple gNB-DUs; for example, one gNB-CU may have more than 100 gNB-DUs connected to it. Since each gNB-DU can support one or more cells, one gNB can control hundreds of cells, unlike a 4G BTS. One cell is supported by only one gNB-DU.

[0049] Furthermore, note that the interface between the CU and DU is designated F1 and, according to 3GPP, should be an open interface. In NG-RAN, the NG interface and Xn-C interface for the gNB consisting of gNB-CU and gNB-DU are terminated at gNB-CU. In EN-DC, the S1-U interface and X2-C interface for the gNB consisting of gNB-CU and gNB-DU are terminated at gNB-CU. The gNB-CU and connected gNB-DU are visible only as gNBs to other gNBs and 5GCs.

[0050] The gNB-CU / DU architecture is described in more detail, for example, in Section 6.1 of Non-Patent Document 6. The F1 interface is described in more detail, for example, in Non-Patent Document 7.

[0051] <Synchronization signal block measurement timing setting - SMTC - PSS / SSS, PBCH> NR introduces a so-called synchronization signal block (SSB), which includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) (in practice, PBCH DMRS and PBCH data). The PSS and SSS can be used by the UE to find, synchronize with, and identify the network. The PBCH transmits minimal system information, including instructions on where the rest of the broadcast system information is transmitted.

[0052] In LTE, these three signals (PSS, SSS, and PBCH) were also used, but not as part of a single SSB. The three SSB components are always transmitted together in NR. For example, the three SSB components have the same periodicity. A given SSB can be repeated within an SS burst set and used for gNB beam sweeping transmissions. SS burst sets can be limited to specific time periods, such as a 5ms window (half frame). For initial cell selection, the UE may assume that the default SS burst set period is 20ms.

[0053] 5G NR PSS is a physical layer-specific signal for identifying radio frame boundaries and is a type of m-sequence. 5G NR SSS is also a physical layer-specific signal for identifying subframe boundaries and is an m-sequence. PSS / SSS sequences consist of complex values ​​used by each element / sample of the sequence. Information on current exemplary 5G implementations of PSS and SSS, including their respective sequence generation and mapping to physical resources, is available in sections 7.4.2.2 and 7.4.2.3 of Non-Patent Literature 2 v17.4.0.

[0054] The time-frequency structure of the SS / PBCH block carrying the SSS is described in Section 7.4.3.1 of Non-Patent Literature 2. In such exemplary 5G implementations, in the time domain, the SS / PBCH block consists of four OFDM symbols numbered in ascending order from 0 to 3. The distribution of PSS, SSS, and PBCH signals within the SS / PBCH block is defined by Table 7.4.3.1-1.

[0055] In the frequency domain, an SS / PBCH block consists of 240 consecutive subcarriers, indexed from 0 to 239. The exact subcarriers used for each PSS, SSS, and PBCH signal within an SS / PBCH block are also defined by Table 7.4.3.1-1.

[0056] Figure 7 shows a simplified illustrative diagram of SSB according to the above definition, with the lower part of Figure 7 showing PSS, SSS, and PBCH in the time domain and frequency domain.

[0057] The timing (OFDM symbol) at which an SS block (see Figure 7) is transmitted by the gNB can be defined differently. In particular, the first symbol index (within each half-frame containing an SSB) in which a candidate SSB is initiated is determined according to Section 4.1, “Cell Search,” of Non-Patent Literature 8. An exemplary set of SSBs is shown in Figure 7, assuming initiating OFDM symbols of 2, 8, 16, 22, 30, 36, 44, and 50 for SCS = 30 kHz and frequency > 3 GHz, where the numbering of the associated OFDM symbols starts from 0 in the half-frame. The number of SSBs in a set of SSBs may be limited to a maximum of Lmax. In one example, the set of SSBs may contain 4, 8, or 64 SSBs.

[0058] Candidate SS / PBCH blocks within a half-frame (for example, called a set of SSBs) are indexed in ascending order of time from 0 to Lmax-1. Correspondingly, each SSB within a set of SSBs is assigned a unique number (starting from 0 and increasing by 1).

[0059] The SSB set shown in Figure 7 illustrates the case where all possible candidate SSBs are actually transmitted by the base station. However, it is not necessary to transmit all SSBs. Rather, the gNB can select only some of the SSBs within the set of SSBs based on certain requirements and transmit only those. The SSBs that are actually transmitted by an SSB can be called an SSB pattern. An SSB pattern has essentially the same characteristics as the corresponding SSB set, including periodicity.

[0060] The gNB instructs the UE on the SSB pattern, for example, which SSBs are actually transmitted and which are not. This can be done, for example, by the gNB transmitting an SSB bitmap that defines the SSB pattern, where each bit of the SSB bitmap relates to one SSB and identifies whether or not that SSB is transmitted. The length of the SSB bitmap depends on the applicable SSB set, for example, 4 bits, 8 bits, or 64 bits.

[0061] Simply put, a set of candidate SSBs to be used by the gNB within a cell is configured. Furthermore, from this set of candidate SSBs, the gNB can select all or fewer candidate SSBs to actually transmit, and this is called an SSB pattern.

[0062] All SSBs can be transmitted on all beams in the system. Alternatively, SSBs can be transmitted on different beams, for example, if SSB beamforming is enabled. In this case, each SSB is transmitted on a different spatial beam, as shown in Figure 8. Similar to the exemplary assumption in Figure 7, there are eight SSBs (SSB0 to SSB7), each of which can be transmitted on a different beam, and each beam is transmitted in a different beam direction. Thus, beam sweeping transmission of SSBs is achieved. In other words, the sweeping transmission of beams (and SSBs) is time-division multiplexed and occurs at different times. Two UEs, UE1 and UE2, receive different SSBs at different times. Each beam has a beam index. For example, the beam index corresponds to the SSB index transmitted through that beam.

[0063] UEs use SSB signals (e.g., PSS, SSS, PBCH) in various mechanisms, particularly for measuring serving cells and time / frequency synchronization.

[0064] <Beam Management> Beam management is a set of Layer 1 (PHY) and Layer 2 (MAC) procedures for establishing and maintaining optimal beam pairs for good connectivity. A beam pair consists, for example, a transmit beam and a corresponding receive beam in one link direction.

[0065] Before a UE can communicate with the network, it must perform cell search and selection procedures to obtain initial cell synchronization and system information. The first step in this process is to obtain frame synchronization, find the cell ID, and decode the MIB and SIB1.

[0066] In the case of a multi-antenna system that transmits multiple beams, detecting the beams from the gNB is also part of the initial procedure (for example, if the UE typically detects all beams in the search space).

[0067] Beam management is mainly divided into three steps: • Initial beam establishment, • Beam adjustment (also called beam tracking and beam refinement), • Beam failure recovery (details will be provided later).

[0068] These steps are briefly explained below.

[0069] <Initial beam establishment> Initial beam establishment includes, for example, the procedures and functions by which beam pairs are initially established in the downlink (DL) and uplink transmit (UL) directions when a connection is established. In the current 5G NR standard, this is done via beam sweeping, where different SSBs associated with different transmit (Tx) beams are transmitted with different OFDM symbols.

[0070] During beam sweeping, the gNB transmits beams in all directions in bursts (short bursts) at regularly defined intervals. Whenever the UE is synchronized with the network, the UE reads the synchronization signal block (SSB) and extracts the primary synchronization signal (PSS), secondary synchronization signal (SSS), physical broadcast channel (PBCH), and demodulation reference signal (DMRS).

[0071] A single SSB spans four OFDM symbols in the time domain and 240 subcarriers (20 resource blocks (RBs)) in the frequency domain (see Figure 7). Each SSB corresponds to a specific beam and is beamformed in a different direction. A group of SSBs forms one SS burst set over a 5 ms window. SS bursts repeat with a period of 20 ms, and the maximum number of SSBs in an SS burst set depends on the operating frequency range.

[0072] Subsequently, the UE can search for the strongest DL Tx beam, for example by adjusting the corresponding DL receiving (Rx) beam on the UE side, and report its selection to the gNB via the corresponding RACH occasion and preamble. In this way, the initial beam pair can remain in effect even after the connection has been established and the connection has been set up, until a new beam instruction is received by the UE.

[0073] <Beam adjustment> After the initial beam pair is established, the beam pair may be adjusted at any time to account for UE movement and / or environmental changes. This may be called beam adjustment. Furthermore, beam management may also include improving the beam shape, for example, by using a narrower CSI-RS beam compared to the relatively wide SSB beam used for initial beam establishment.

[0074] The UE measures beam intensity by measuring the received signal power. In idle mode, this is based on the synchronization signal; in connected mode, it is based on the Channel State Information Reference Signal (CSI-RS) in DL and the Sounding Reference Signal (SRS) in UL. The UE periodically searches for the best beam using predetermined threshold criteria defined by the gNB and identifies the beam with the highest Reference Signal Received Power (RSRP). The UE may then perform a beam reporting procedure.

[0075] Because beam tuning is not performed simultaneously by the gNB and UE, it may result in one beam (identified by index) being used for UL or DL ​​communication per procedure. The gNB can use information and recommendations from the UE to enhance beam tuning. Control signaling and data transmission may benefit from the beam selected in the process, as beam tuning aims to improve link quality based on constantly changing radio channel conditions. The gNB is responsible for determining which UL Rx beam and DL Tx beam to use and instructing the UE about those beams. Once the UE knows which beam the gNB is using, it can select its own UL Tx beam and DL Rx beam.

[0076] <Beam malfunction recovery> Beam failures can occur when the beam cannot be tracked using the beam adjustment procedures described above. This can happen, for example, if the current beam pair is unexpectedly and suddenly interrupted, and the beam tracking function cannot react quickly enough. Once a beam failure occurs, beam recovery typically requires the following steps:

[0077] • Beam fault detection, Identifying candidate beams, • Sending a recovery request • Network response to beam recovery requests.

[0078] For example, in the case of a beam failure due to poor channel conditions, a beam recovery process is triggered to acquire a new beam. The UE monitors the reference signal and identifies the beam failure when the failure trigger conditions are met. If a beam failure occurs, the UE selects the next best beam to send a Random Access (RA) preamble. If the first RA attempt fails, the UE sweeps to another beam for another RA procedure. The RA preamble is sent in PRACH. Finally, the UE receives downlink resource allocation and uplink grant in the Physical Downlink Control Channel (PDCCH).

[0079] <Beam measurement and reporting> The general actions performed between one or more steps of the main procedure may include one or more of the following: Beam sweeping, i.e., covering a spatial area with a set of beams transmitted and received according to a predetermined interval and direction. • Beam measurement, i.e., evaluation of the quality of the received signal in gNB or UE. • Beam determination, i.e., selecting an appropriate beam (or multiple beams) in either the gNB or UE according to the measurements obtained by the beam measurement procedure. • Beam reporting, i.e., the procedure used by the UE to send beam quality and beam determination information to the gNB.

[0080] Simply put, beam reporting involves the UE measuring a set of reference signals (e.g., SSB or CSI-RS) corresponding to different downlink Tx beams. The UE reports these measurements to a network (e.g., a serving gNB). Based on the received measurements, the network can determine, for example, the most suitable downlink Tx beam for the UE.

[0081] Measurement and reporting can be based, for example, on a CSI reporting framework, which can generally be thought of as including one part for setting up and another part for triggering CSI reporting.

[0082] Further details regarding measurement and reporting are provided in the following sections.

[0083] <Layer 1-Layer 2 Trigger Mobility (LTM)> When a UE moves from the coverage area of ​​one cell to another, a serving cell change must be performed at some point. According to one possibility, the serving cell change is triggered by an L3 measurement and carried out by a reconfiguration with synchronization process triggered by RRC signaling for PCell and PSCell changes, and also triggered by SCell addition and removal where applicable. Such a procedure involves a complete L2 (and L1) reset and can result in longer latency, greater overhead, and longer downtime than beam switching mobility.

[0084] One of the topics in the ongoing 3GPP Rel.18 mobility extension work is supporting Layer 1-Layer 2 (also known as lower layer) triggered mobility (LTM). The UE is first configured with a set of candidate cells by the RRC (L3). Then, L1 or L2 signaling (e.g., MAC CE (and / or possibly DCI)) is used to trigger the UE's serving cell switching between candidate cells without the need for RRC reconfiguration. In other words, to facilitate continuous cell switching, cell switching should be prepared such that, regardless of which candidate cell becomes the new serving cell, RRC reconfiguration for the UE is not required after the cell switch. The goal is to reduce latency, overhead, and downtime associated with serving cell changes. This applies to both cell switching within a DU and between DUs within a CU. Figure 6 illustrates intra-DU switching between two cells in the same gNB-DU, and inter-DU switching between two cells in different gNB-DUs.

[0085] Figure 9 shows a simplified, exemplary message exchange for LTM cell switching within a DU, in accordance with the ongoing 3GPP Rel.18 work. Correspondingly, it is exemplary assumed that the gNB-DU controls multiple cells, including the current serving cell of the UE. The gNB-DU is connected to the gNB-CU.

[0086] As is evident from this, cell switching is determined based on lower-layer (e.g., Layer 1 RSRP) measurements performed by the UE and reported to the gNB-DU (see "Lower-Layer Measurement Reporting"). More specifically, the UE measures a reference signal from one or more candidate cells in the gNB-DU and reports the results to the gNB-DU. The gNB-DU or gNB-CU can use the received measurement results to decide whether or not to perform LTM on the candidate target cell. A lower-layer cell switching trigger is sent to the UE, enabling the UE to perform a switch from the current cell to another cell in the gNB-DU.

[0087] The advantage achieved by performing measurement and reporting using Layer 1 is low latency.

[0088] In the current L1 beam measurement framework, the target of measurement (referring to a set of RSs, e.g., SSB and / or CSI-RS) is semi-statically configured by the RRC. If the same mechanism is used for LTM, frequent RRC reconfiguration is required to change the target of measurement when candidate cells are changed, which can cause signaling overhead and latency. As the number of candidate cells pre-configured by the RRC increases, the measurement burden on the UE may increase, potentially exceeding the UE's capabilities to some extent.

[0089] <Lower Layer Measurement Report> As described above, the lower-layer mobility procedure is based on the UE performing measurements and reporting the measurement results to the UE's serving gNB (serving gNB-DU and / or serving gNB-CU). To achieve this, the UE can be configured with the necessary parameters and information by the serving gNB. For example, the configuration of the UE for performing measurements and reporting the measurement results is conceptually as follows: • The quantity or set of quantities to be reported, • Downlink resources for each cell on which measurements should be performed to derive the reported quantity. • How the actual reporting is performed, for example, the timing of the reporting and the uplink channel used for reporting.

[0090] For example, measurement and reporting can be based on a CSI reporting framework, which can generally be thought of as having two parts: a part for setting up and a part for triggering CSI reporting.

[0091] The CSI-MeasConfig IE is the top-level IE for CSI configuration, and it configures not only L1-RSRP related measurements / reports for beam management, but also conventional CSI related measurements / reports (e.g., CQI) to determine appropriate MIMO precoding, modulation, and coding.

[0092] CSI-MeasConfig IE primarily configures three types of lists: 1) List of RS resource sets Each RS resource set in the list contains one or more RS resources. For example, multiple CSI-RS resources may be configured by, for example, NZP-CSI-RS-Resource IE and then grouped into an RS resource set by NZP-CSI-RS-ResourceSet IE. Other possible RS resources are defined by IEs CSI-IM-Resource and SSB-Index.

[0093] 2) List of CSI-ResourceConfig IE • Different CSI-ResourceConfigs in a list can contain one or more different RS resource sets selected from list element 1). These include NZP-CSI-RS-ResourceSet, CSI-IM-ResourceSet, and / or CSI-SSB-ResourceSet, each identified by its appropriate ID (see, for example, NZP-CSI-RS-ResourceSetId, CSI-IM-ResourceSetId, and / or CSI-SSB-ResourceSetId).

[0094] 3) List of CSI-ReportConfig IEs.

[0095] • Different CSI-ReportConfigs in the list configure different CSI report instances. This is an informational element that links the reporting settings of this CSI-ReportConfig (such as those by PUCCH or PUSCH) to the measurement resource set (i.e., one CSI-ResourceConfig in the list element 2 above). The CSI-ResourceConfigID contained in the CSI-ReportConfig IE identifies the CSI-ResourceConfig IE being used.

[0096] Measurements and reports may be performed periodically, semi-periodicly, or aperiodically. Measurement results are reported by the UE to the gNB, for example, as uplink control information in PUCCH or PUSCH. In one 5G-compliant example, CSI reporting is performed by the UE based on the definition given in Section 6.3 of Non-Patent Literature 9.

[0097] In current 3GPP 5G systems, there are two types of reference signals available for measurement: SSB (see SSB-Index above) and CSI-RS (Channel State Information-Reference Signal; see NZP-CSI-RS-Resource IE and CSI-IM-Resource IE above). SSB is always transmitted by the network and is not specific to the UE, thus lacking flexibility. For example, SSB can be used in relation to a relatively wide beam. CSI-RS, on the other hand, can be configured specifically for the UE and is very flexible regarding when and how often it is transmitted (time domain) and frequency domain resources. CSI-RS can be configured for only one or a few UEs, so it can be used in relation to a relatively narrow beam.

[0098] Reporting CSI in 5G NR involves several reporting components (i.e., several different types of CSI), some of which are based on Section 5.2.1 of Non-Patent Document 5.

[0099] ·CQI (Channel Quality Information), ·PMI (Precoding Matrix Indicator), • CRI (CSI-RS Resource Indicator) • SSBRI (SS / PBCH Resource Block Indicator) · LI (Layer Indicator) · RI (Rank Indicator) • L1-RSRP, and / or ·Ability indicators.

[0100] UE may report one or more metrics, or a combination of different metrics. Generally, these metrics can be grouped into two types.

[0101] - L1-RSRP related quantities (e.g., cri-RSRP and SSB-Index-RSRP, see IE CSI-Report Config below) - CSI-related data (e.g., other information included in the IE CSI-Report Config) L1-RSRP-related quantities are new, first introduced in NR(Rel-15), and one of their purposes is to facilitate beam management. In contrast, CSI-related quantities (e.g., CQI) are conventional and already exist in LTE. These conventional CSI-related quantities can be used by base stations, for example, to select appropriate MIMO precoding, modulation, and coding sizes to suit channel conditions.

[0102] An exemplary implementation may include, for example, the following information elements (IE) in accordance with the current definition of the 5G 3GPP standard as defined in Non-Patent Document 10:

[0103] CellGroupConfig, CSI‐MeasConfig, CSI‐ReportConfig, CSI‐ResourceConfig, NZP‐CSI‐RS‐Resource, and NZP‐CSI‐RS‐ResourceSet.

[0104] Simply put, measurement and reporting for LTM can be performed based on the 5G CSI reporting framework. In particular, the information elements "CSI-MeasConfig" and "CSI-ReportConfig" indicate the parameters of the CSI reporting framework that can be used by the UE to measure and then report the measurement results.

[0105] One possible subsequent sequence of IEs that defines measurement and reporting according to the CSI framework includes: [Table 1] Details of this framework are described, for example, in Section 6.3.2 of Non-Patent Document 10.

[0106] <Technical Terms> The following describes new radio access technologies envisioned for 5G mobile communication systems, including UEs, base stations, and their respective procedures, to meet these needs, but which can also be used in conventional LTE-based mobile communication systems and future (e.g., 6G) mobile communication systems. Various implementations and variations are also described. The following disclosures are facilitated by, and can be based on, at least in part on, the above discussions and findings.

[0107] It should be noted that, in general, many assumptions are made herein to enable a clear, concise, and easily understandable explanation of the principles underlying this disclosure. These assumptions are merely examples made herein for illustrative purposes and are not necessarily essential to the invention, and therefore should not limit the scope of this disclosure. It will be apparent to those skilled in the art that the principles described in the following disclosure and claims may be applicable to different scenarios and may be applicable in ways not expressly described herein.

[0108] Furthermore, some of the terms used below, such as procedures, entities, and layers, are closely related to the designated terminology used in LTE / LTE-A systems or current 3GPP 5G standardization, although specific terminology used in the context of new radio access technologies for the next communication systems has not yet been fully determined or may ultimately change. Therefore, terminology may change in the future without affecting the functionality of each function and solution. Accordingly, those skilled in the art will recognize that the solutions and the scope of their protection should not be limited to specific terms used exemplary herein due to the lack of new or finally agreed-upon terminology, but should be understood more broadly in terms of the underlying functions and concepts of the solutions described in this disclosure.

[0109] For example, a "mobile station," "mobile node," "user terminal," or "user equipment (UE)" is a physical entity (physical node) in a communication network. A single node may have several functional entities. A functional entity refers to a software or hardware module that implements and / or provides a predetermined set of functions to the same node, other nodes, or other functional entities in the network. A node may have one or more interfaces that allow it to attach to a communication facility or medium that enables it to communicate. Similarly, a network entity may have logical interfaces that allow a functional entity to attach to a communication facility or medium that enables it to communicate with other functional entities or corresponding nodes.

[0110] The terms “base station” or “radio base station” used here refer to a physical entity within a communication network. Similar to a mobile station, a base station may have several functional entities. Functional entities refer to software or hardware modules that implement and / or provide a predetermined set of functions to the same node, other nodes, or other functional entities in the network. Physical entities perform several control tasks related to communication devices, including one or more of scheduling and configuration. It should be noted that base station functions and communication device functions can also be integrated within a single device. For example, a mobile terminal may also implement base station functions for other terminals. The term used in LTE is eNB (or eNodeB), while the term currently used in 5G NR is gNB. Furthermore, a base station may also be a gNB in ​​an NR system on a non-terrestrial network (NTN).

[0111] Communication between the UE and the base station is typically standardized and can be defined by various layers such as PHY, MAC, and RRC (see the explanation of background technologies above).

[0112] <Embodiment> In general, as already mentioned, it is sometimes desirable to improve the efficiency of instructing the UE (User Engineer) on the object to be measured, for example, for LTM (Long-Term Measurement).

[0113] This disclosure provides network nodes and user equipment, along with corresponding methods and programs. For example, an integrated circuit can control processing at a UE or base station. As shown in Figure 10, user equipment 1010 and network node 1060 may communicate with each other via a radio channel in a wireless communication system. For example, user equipment may be NR user equipment, and network node may be a base station or scheduling node such as an eNB, or an NR gNB, and in particular may be a gNB in ​​an NTN (Non-Terrestrial Network) NR system. An example of such a communication system is shown in Figure 10. Communication system 1000 may be a wireless communication system according to the 5G technical specifications, in particular an NR communication system. However, this disclosure is not limited to 3GPP NR and may also apply to other wireless systems such as NTN or cellular systems.

[0114] Figure 10 shows a general and simplified exemplary block diagram of a user device 1010 (also called a communication device) and a network node 1060 (e.g., a base station 1060 such as an eNB / gNB). However, typically, the scheduling device can be a terminal in the case of a side-link connection between two terminals. Furthermore, particularly with respect to URLLC, eMBB, and mMTC use cases, the user device 1010 may be a sensor device, a wearable device, or a controller for a connected vehicle or an automated machine in an industrial plant. The user device 1010 may also be capable of functioning as a relay between the network node 1060 and other communication devices (e.g., not limited to communication "terminals" or user "terminals").

[0115] UE1010 and eNB / gNB1060 may communicate with each other via (wireless) physical channel 1050 using their respective transceivers 1020 (UE side) and 1070 (network node side). Network node 1060 and terminal 1010 form a communication system 1000. The communication system 1000 may further include other entities as shown in Figure 1.

[0116] As shown in Figure 10 (left side), according to the first exemplary embodiment, a user device (UE) 1010 is provided. The UE 1010 comprises a receiving unit and a circuit 1030. The receiving unit may be included in a transmitting / receiving unit 1020.

[0117] The receiving unit, when in operation, receives a first instruction specifying one or more measurement targets, each of which includes one or more beams.

[0118] The object of measurement includes, for example, (i) a cell containing one or more beams, (ii) a set of beams, (iii) a beam, or (iv) any combination thereof. For example, the object of measurement may be a set of SSB beams and / or a set of CSI-RS beams. Such beams may be represented, for example, by their respective RS IDs or TCI status IDs. Such TCI status IDs point to SSB or CSI-RS as the QCL source. Further details are disclosed in "States of Transmit Setting Indicators and Pseudo Collocations".

[0119] Receiving a first instruction may include, for example, receiving a MAC-CE message specifying one or more objects to measure. In other words, the first instruction may be a MAC-CE message specifying one or more objects to measure. However, the present invention is not limited to MAC-CE messages. In general, other signaling from other layers, such as L1(PDCCH) signaling or RRC signaling, may be used, as long as they are suitable for specifying a set of objects to measure. For example, higher-layer signaling for specifying objects to measure, such as RRC signaling, may be smaller in size than higher-layer messages for setting up a complete set of objects to measure, such as RRC messages.

[0120] Furthermore, circuit 1030 acquires a set of objects to measure during operation. The set of objects to measure includes one or more objects to measure indicated by a first instruction. For example, such a set of objects to measure may be acquired by receiving additional instructions, e.g., higher-layer instructions, e.g., an RRC message, which may indicate PCI (physical cell ID) or logical cell ID, time-domain settings (e.g., SSB position in SMTC or periodic and burst), frequency-domain position (e.g., center frequency), and SCS (subcarrier spacing). As another example, UE1010 may acquire a set of objects to measure by performing a blind detection of available objects, e.g., an SSB beam. In other words, UE1010 may sense or detect the presence of a signal, such as an SSB beam, without prior knowledge of the signal characteristics or channel information. As a further example, the detection of available measurement targets may be aided by several pieces of supporting information, one or more of the following: PCI or logical cell ID, time domain setting (e.g., SMTC or SSB position in periodicity and bursts), frequency domain position (e.g., center frequency), and SCS.

[0121] Furthermore, during operation, circuit 1030 acquires a subset of the set of items to be measured from the set of items to be measured based on the first instruction received. Such a subset of items to be measured may include, for example, one or more cells, one or more beams, or a combination thereof. In other words, UE1010 may select a subset from the acquired set of items to be measured. For example, the first instruction includes information about the subset. For example, the first instruction may specify one or more cells containing beams for performing beam measurements. For example, the first instruction specifies one or more beams for performing beam measurements.

[0122] In exemplary implementations, a subset of the measured object may exhibit activation and / or deactivation at the beam level and / or cell level. Such activation and / or deactivation are described in detail below in "Cell-Level Activation and Deactivation" and "Beam-Level Activation."

[0123] Furthermore, during operation, circuit 1030 performs beam measurements on the beams included in the acquired subset of measurement targets.

[0124] For example, a subset of the measurement target may consist of one or more beams. Beam measurements may be performed on each of these one or more beams.

[0125] For example, a subset of the measurement target may indicate one or more cells as the measurement target. Beam measurements may be performed on the detected beams contained in those one or more cells. Alternatively, beam measurements may be performed on one or more beams acquired in those one or more cells by additional instructions such as the RRC message described above. In this case, the set of measurement targets indicated by the additional instructions may include both cells and beams.

[0126] Beam measurements were described in detail in the sections "Beam Measurement" and "Layer 1-Layer 2 Trigger Mobility (LTM)" above. Furthermore, measurements are not limited to intra-frequency measurements but can also be used for inter-frequency measurements. For example, this allows for setting different frequency ranges for serving cells and non-serving cells.

[0127] By specifying a subset of the measurement targets, the RRC can be configured to set a reasonable number of L1 measurement targets for the UE1010 without requiring the UE1010 to measure all of them. Depending on the state of the UE, such as its location, movement, power status, or capabilities, the L1 measurement targets can be dynamically adjusted without resetting the RRC.

[0128] Generally, circuit 1030 controls the transceiver unit 1020 to receive and / or transmit data. This is indicated by arrow 1025, which schematically shows the interface between circuit 1030 and the transceiver unit 1020, and control is performed through this interface. For example, circuit 1030 can instruct the transceiver unit 1020 to receive the instructions via the interface 1025.

[0129] Figure 11 shows an exemplary functional structure of the circuit 1035 shown in Figure 10. As shown, the target acquisition circuit 1035 may include a target subset acquisition circuit 1136. For example, the target acquisition circuit 1035 may include a beam measurement circuit 1137. More specifically, the circuit 1137 may determine when and / or how to perform the beam measurement, for example, as described in "Beam Measurement" and "Layer 1-Layer 2 Trigger Mobility (LTM)" above.

[0130] In response to the UE1010 described above, a method for receiving configuration instructions from user equipment is provided. As shown in Figure 13, this method includes the following steps: Step S1310 involves receiving a first instruction (S1310) specifying one or more measurement targets, wherein each measurement target includes one or more beams, Step S1320 involves obtaining the set of items to be measured, Step S1330, based on the first instruction received, to obtain a subset of the items to be measured from the set of items to be measured, Step S1340: Perform beam measurements on the beams included in the acquired subset of measurement targets.

[0131] As shown in Figure 10 (right side), a base station 1060 is provided. The base station 1060 comprises a transmitting unit and a circuit 1080. The transmitting unit may be included in the transceiver unit 1070. When in operation, the circuit 1080 acquires a set of objects to be measured, and the objects to be measured in the set of objects to be measured include one or more beams. The circuit 1080 generates an instruction to specify a subset of objects to be measured from the set of objects to be measured.

[0132] The transmitting unit sends instructions to specify a subset of the items to be measured during operation.

[0133] Generally, circuit 1080 controls the transceiver 1070 to receive and / or transmit data. This is indicated by arrow 1075, which schematically shows the interface between circuit 1080 and the transceiver 1070, and control is performed through this interface. For example, circuit 1080 can instruct the transceiver 1070 to transmit the aforementioned instructions.

[0134] Figure 12 shows an exemplary functional structure of the measurement target setting circuit 1085 shown in Figure 10. In particular, the measurement target setting circuit 1085 may include a measurement target subset setting circuit 1236. For example, the measurement target setting circuit 1085 may include an instruction transmission circuit 1237. Circuit 1237 may be responsible for transmitting an instruction to specify a subset of the measurement target.

[0135] Furthermore, in accordance with the base station 1060 described above, a communication method performed by the base station 1060 is provided. As shown in Figure 14, this method includes the following steps: Step S1410 is to obtain a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams, Step S1420 generates instructions to specify a subset of the set to be measured from the set of the set to be measured, Step S1430: Sends instructions to specify a subset of the items to be measured.

[0136] UE1010 comprises a transceiver unit 1020 and a (processing) circuit 1030, and network node 1060 comprises a transceiver unit 1070 and a (processing) circuit 1080. The transceiver unit 1010 comprises a receiver and / or a transmitter, and / or may function as a receiver and / or a transmitter. In other words, in this disclosure, the term “transceiver unit” is used for hardware and / or software components that enable the communication device 1010 or base station 1060 to transmit and / or receive radio signals via radio channel 1050, respectively. Thus, the transceiver unit can correspond to a receiver, a transmitter, or a combination of a receiver and a transmitter. Typically, it is assumed that base stations and communication devices can both transmit and receive radio signals. However, for some applications of eMBB, mMTC, and URLLC (e.g., smart homes, smart cities, industrial automation), devices such as sensors may only transmit signals. Furthermore, the term “circuit” includes processing circuits formed by one or more processors or processing units. Circuits 1030 and 1080 (or processing circuits) may be one or more hardware such as processors, or any hardware such as LSIs. Input / output points (or nodes) exist between the transmitting / receiving unit and the processing circuit, and the processing circuit controls the transmitting / receiving unit through these input / output points (or nodes) during operation, that is, it controls the receiving and / or transmitting unit and can exchange received / transmitted data.

[0137] The transmitting and receiving unit may include an RF front, which may consist of one or more antennas, amplifiers, radio frequency (RF) modulators / demodulators, etc., as a transmitting and receiving unit. The processing circuit may perform control tasks such as controlling the transmitting and receiving unit to transmit user data and control data provided by the processing circuit, and / or to receive user data and control data that is further processed by the processing circuit. The processing circuit may also be responsible for performing other processes such as judgment, determination, calculation, and measurement. The transmitting unit may be responsible for performing the transmission process and other processes related thereto. The receiving unit may be responsible for performing the reception process and other processes related thereto, such as monitoring channels.

[0138] Furthermore, each of the processes / operations / methods described below may be implemented or controlled by circuit 1030 (UE side) and / or circuit 1080 (base station side).

[0139] In the following description, unless otherwise explicitly stated or specifically stated in the context, the descriptions of user equipment, base stations, and methods, as well as their respective embodiments, apply to each. Each of the steps described below may be included as code instructions in a program, or they may be executed by one or more processors (e.g., circuit 1030 and / or circuit 1080).

[0140] As described above, the UE1010 may receive a second instruction. The second instruction specifies a pre-configured set of objects to be measured. In other words, the second instruction includes information about one or more cells, each containing one or more beams. The cells and / or beams may be pre-configured by one or more base stations, networks, etc. For example, the UE1010 may receive information about a set of objects to be measured, such as at least one cell containing beams or sets of beams, for beam measurement.

[0141] Base station 1060 may generate such a second instruction. Base station 1060 may also transmit the second instruction to UE 1010.

[0142] A second instruction may be received in addition to the first instruction. For example, a UE may receive a second instruction before receiving the first instruction. Receiving a second instruction may include receiving a Radio Resource Control (RRC) message that specifies a pre-configured set of items to measure. In other words, the second instruction may be an RRC message that specifies a pre-configured set of items to measure. However, the present invention is not limited to RRC messages. In general, it may be any other message suitable for specifying a set of items to measure.

[0143] For SSB beams, the RRC setting may indicate which SSBs in which cells are available for measurement by the UE. For example, the RRC setting may provide the PCI (Physical Cell ID), SSB period, and position in the burst. For example, the RRC setting may instruct the UE1010 to perform autonomous detection using or without minimal information about the SSB to be measured. As an example, IE MeasObjectNR specifies information applicable to in-frequency and inter-frequency measurements of an SS / PBCH block (see Non-Patent Literature 10).

[0144] For CSI-RS beams, the RRC configuration may provide the UE with detailed RS configuration. For example, in the IE NZP-CSI-RS-Resource, the following configuration information is provided: RS ID, CSI-RS resource mapping, power control offset, scrambling ID, periodicity and offset, and TCI-State ID (for QCL sources). Examples of NZP-CSI-RS-Resource IE and TCI-State IE are shown below, taken from section 6.3.2 of Non-Patent Document 10: -NZP-CSI-RS-Resource The IE NZP-CSI-RS-Resource is used to configure the Non-Zero-Power (NZP) CSI-RS transmitted in the cell containing the IE. This NZP-CSI-RS can be configured to be measured by the UE (see Non-Patent Document 5

[19] , Section 5.2.2.3.1). Changing the NZP-CSI-RS-Resource between periodic, semi-permanent, and aperiodic configurations is not supported unless an undo and add operation is performed.

[0145] [Table 2]

[0146] -TCI-State The IE TCI-State associates one or two DL reference signals with the corresponding pseudo-collocation (QCL) type.

[0147] [Table 3]

[0148] Based on the second instruction received, the UE1010 may acquire a set of measurements. In other words, the UE1010 acquires information about at least one cell, which includes a set of objects to be measured, such as a beam or a set of beams. This set may provide objects to be measured that are available for beam measurements.

[0149] One or more target measurement objects are selected (acquired) from a set of measurement objects based on the information contained in the first instruction. For example, UE may perform beam measurements on each beam included in the set of measurement objects. For example, UE1010 may perform beam measurements on one or more beams included in a subset of measurement objects. For example, UE1010 may perform beam measurements on a single beam included in the measurement object indicated by the second instruction.

[0150] For example, UE1010 may transmit beam measurement information to base station 1060.

[0151] <Beam level activation> As described above, the first instruction specifying one or more measurement targets may indicate the activation of the measurement targets at the beam level.

[0152] For example, the reception of a first instruction includes the reception of a beam instruction specifying a set of activated beams as one or more objects to be measured. The set of activated beams may include one or more beams. If there are two or more beams, the two or more beams may be in the same cell or in different cells. In other words, the first beam of the two or more beams may be in the first cell, and the second beam of the two or more beams may be in the same first cell or in a second cell different from the first cell.

[0153] During beam measurement, the circuit performs measurements of the activated beams while in operation. For example, measurements may be performed on each of the activated beams. For example, measurements may be performed on each activated beam that satisfies additional conditions such as a signal intensity threshold for RSRP.

[0154] In the first exemplary implementation, measurements may be performed for each beam in the set of activated beams. In addition, tracking may be performed for each beam in the set of activated beams. Beam tracking is described in detail in the Beam Management and Beam Tuning section. In particular, tracking means that the UE always performs DL synchronization to the beam, including, for example, obtaining a DL timing reference and adjusting the spatial filter for DL ​​reception so that the UE is prepared for receiving DL control and data channels using the tracked beam.

[0155] In other words, the UE1010 may perform tracking, as well as measurement, only on activated beams. Activated beams form a subset of the beam set. The beam set may be pre-configured by the RRC setting or acquired by blind detection. For example, the UE does not need to perform beam measurement and / or tracking on beams that are not activated by the first instruction.

[0156] For example, in the first exemplary implementation, the beams of the activated beam set are either Synchronization Signal Block (SSB) beams or Channel State Information Reference Signal (CSI-RS) beams.

[0157] In a first example of the first exemplary implementation, one or more SSB beams may be activated for a cell for L1 measurement. A list of cells may be set by the RRC. A first instruction, for example, a MAC-CE message, may refer to a cell in the list of cells. If the list of cells is not set by the RRC, the first instruction may refer to the PCI of a cell.

[0158] Figure 15 illustrates exemplary MAC-CE messages indicating a set of activated SSB beams. In other words, Figure 15 shows an example of beam designation using MAC-CE messages. The exemplary MAC-CE messages are candidate cell IDs. i The field contains 1510, where i is an integer between 0 and N, and N is the total number of candidate cells in MAC-CE minus 1. Candidate Cell ID i Field 1510 indicates the identifier of the candidate cell to which the SSB beam activation will be applied. In this example, the length is 5 bits, meaning that up to 32 cells can be indicated by field 1510.

[0159] Furthermore, an exemplary MAC-CE message may include, for each candidate cell, for the i-th candidate cell, an additional bit C indicating whether there is a (i+1)-th candidate cell in the MAC-CE. i For example, if this C i field is set to 1, an octet containing candidate cell i+1 exists. If the field is 0, there are no more cells in this MAC CE. FIG. 15 shows the C0 field 1511 in the first octet and the C N field 1512 in an exemplary (M-2)-th octet.

[0160] For each candidate cell, the exemplary MAC-CE message in FIG. 15 includes at least one SSB index, the SSB index i,j The SSB index i,j indicates the j-th SSB index activated in the i-th cell among (N+1) cells, where j is an integer in the range from 0 to M, and M is the value obtained by subtracting 1 from the total number of candidate SSB indices in the i-th cell existing in the MAC-CE. For example, for the first candidate cell, the MAC-CE includes indices for two SSB beams, namely, the SSB index 0,1 1530 and the SSB index 0,2 1531. The length of the SSB index i,j is 6 bits in this example, meaning that it can indicate a maximum of 64 SSB beams per cell.

[0161] Furthermore, the exemplary MAC-CE message may include, for each SSB index, an additional bit S i,j The additional bit S i,j indicates whether the (j+1)-th SSB beam is included in the MAC-CE for the i-th candidate cell. For example, this S i,jIf the field is set to 1, there is an octet containing the (j+1)th SSB beam for the i-th candidate cell. If the field is 0, there are no further SSB beams for that cell in this MAC CE. For example, bit S 0,1 1520 and bit S N,1 1521 is set to 1, which means the SSB index 0,2 and SSB index N,2 Each of the SSB beams possessing this characteristic is shown to be present in this exemplary MAC-CE message.

[0162] In an example MAC-CE message, the bit indicated as "R" is a spare bit and may have a default value of 0.

[0163] In a second example of the first exemplary implementation, one or more CSI-RS beams may be activated for cells for L1 measurement. The list of cells is first set by the RRC, and then the MAC CE may refer to the cells in the list.

[0164] Figure 16 shows MAC-CE messages indicating a set of activated CSI-RS beams. The exemplary MAC-CE messages in Figure 16 are similar to the MAC-CE messages in Figure 15. In particular, the exemplary MAC-CE messages indicate the candidate cell ID. i It may include a field indicating 1610, where i is an integer between 0 and N, and N is the total number of candidate cells in MAC-CE minus 1. Candidate Cell ID i 1610 indicates the identifier of the candidate cell to which the CSI-RS beam activation will be applied. In this example, it is the candidate cell ID. i The field length is 5 bits, and it can represent up to 32 cells.

[0165] Furthermore, a MAC-CE message indicating a set of activated CSI-RS beams may include a BWP ID field 1640 indicating the Bandwidth Part (BWP) to which RS activation is applied.

[0166] Furthermore, the exemplary MAC-CE message in Figure 16 includes an additional bit C for each candidate cell. i It may include the following additional bit C. i This indicates whether the (i+1)th candidate cell exists in MAC-CE for the i-th candidate cell. For example, this C i If the field is set to 1, there is an octet containing candidate cell i+1. If the field is 0, there are no further cells in this MAC CE. Figure 16 shows the C0 field 1611 in the first octet and the example C in the (M-2)th octet. N This indicates field 1612.

[0167] For each candidate cell, the exemplary MAC-CE message in Figure 16 contains at least one CSI-RS instruction RS ID i,j May include, CSI-RS instruction RS ID i,j This indicates the CSI-RS ID activated in the i-th cell. Here, j is an integer in the range of 0 to M, and M is the total number of candidate CSI-RS indications in the i-th cell present in MAC-CE minus 1. For example, for the first candidate cell, MAC-CE is the index of the two CSI-RS beams, i.e., the RS ID 0,1 1630 and RS ID 0,2 1631 may be included. In this example, each CSI-RS indicator RS ID i,j The length is 7 bits, meaning that up to 128 CSI-RS beams can be represented per cell.

[0168] Furthermore, the example MAC-CE message has an additional bit S for each CSI-RS ID. i,j This may include and indicate whether the (j+1)th RS beam is included in MAC-CE for the i-th candidate cell. For example, this S i,jIf the field is set to 1, there is an octet containing the (j+1)th RS beam for the i-th candidate cell. If the field is 0, there are no further RS ​​beams for that cell in this MAC CE. For example, bit S 0,1 1520 and bit S N,1 1621 is set to 1, which means RS ID 0,2 and RS ID N,2 It is shown that each RS beam with the index is present in this exemplary MAC-CE message.

[0169] Similar to Figure 15, the bit labeled "R" is a spare bit and may have a default value of 0.

[0170] In a second exemplary implementation, the activated beam may form a subset from a set of beams, which is acquired by UE1010. In particular, UE1010 may acquire a predetermined set of beams. This predetermined set of beams may be determined by receiving a second instruction from base station 1060, for example, by receiving an RRC message containing a set of measurements pre-configured as the predetermined set of beams. This predetermined set of beams may be determined by blind detection performed by UE1010.

[0171] In a second exemplary implementation, the beam measurement may include performing a measurement on each beam in a given set of beams. Furthermore, the beam measurement may include performing a track on each beam in a set of activated beams.

[0172] In other words, the UE1010 may maintain (perform) tracking of the activated SSB beam. Furthermore, the UE1010 may measure the beam based on the RRC setting, which may include an unactivated beam. By measuring and reporting the unactivated beam, the UE (and therefore the gNB based on the UE report) may discover a new beam suitable for communication.

[0173] For example, in the second exemplary implementation, the beams of the activated beam set may be SSB beams. An example of a first instruction specifying a subset of activated SSB beams, such as a MAC-CE message, is shown in Figure 15, with a corresponding detailed explanation given above.

[0174] <Activation and deactivation at the cell level> As described above, the first instruction specifying one or more measurement targets may indicate the activation of the measurement targets at the cell level.

[0175] In a third exemplary implementation, the reception of a first instruction includes the reception of a cell instruction specifying a set of cells as one or more objects of measurement. The set of cells may include one or more cells.

[0176] The cell indication may specify whether a cell in a set of cells is deactivated or not. The UE1010, in particular the circuit, may measure the beam contained in cells that are not deactivated.

[0177] In other words, the cell can be deactivated for L1 measurement. The UE does not need to perform L1 measurement on any beam from a deactivated cell.

[0178] For cells that have not been deactivated for L1 measurement, UE1010 may measure the SSB beam based on the RRC setting, for example, the indicated set of SSBs, or the blindly detected SSBs. The indicated set of SSBs may be received in an RRC message transmitted by base station 1060.

[0179] If a pre-configured CSI-RS beam exists, the UE1010 may measure the CSI-RS beam based on the RRC settings.

[0180] For example, a list of cells may be set by an RRC message, and then a MAC CE message may be used to deactivate the cells in the list.

[0181] An example of a cell list is an LTM candidate cell list. However, the present invention is not limited to the above LTM candidate cell list. In general, any cell list set by RRC can be used. When such a list is used, a logical cell ID that references that list may be used in MAC CE. If a cell list has not been set by RRC before MAC CE cell deactivation, a PCI (physical cell ID) may be used in MAC CE.

[0182] Figure 17 shows an example of cell indication using MAC-CE messages for deactivation. Each bit in the MAC-CE message corresponds to a cell in the list. In other words, each bit corresponds to a set candidate cell for the L1 measurement. The exemplary MAC-CE message supports up to 32 cells. For a cell, C i The field value is either 1 or 0.

[0183] For example, in the third exemplary implementation, a value of 0 indicates that the cell is deactivated, and a value of 1 indicates that the cell is not deactivated. For example, bit C0 1710 (or field C0 1710) may be indicated for a first cell in the list, and the value of bit C0 1710 may indicate whether the first cell is deactivated or not. Similarly, bit C1 1711 may be indicated for a second cell in the list, and the value of bit C1 1711 may indicate whether the second cell is deactivated or not.

[0184] Alternatively, multiple cells may be grouped into a cell group, and each bit in the exemplary MAC-CE message in Figure 17 may indicate the deactivation of one cell group.

[0185] In the fourth exemplary implementation, as in the third exemplary implementation, the reception of the first instruction includes the reception of a cell instruction specifying a set of cells as one or more objects of measurement. The set of cells may include one or more cells.

[0186] In a fourth exemplary embodiment, the cell indication may specify, for a cell in a set of cells, whether or not that cell is activated. The UE1010, in particular the circuit, may perform measurements on the beam contained in the activated cell. In other words, with respect to the beam contained in the activated cell, the circuit performs measurements on the beam contained in the activated cell during operation.

[0187] In other words, a cell can be activated for L1 measurement. The UE does not need to perform L1 measurement on any beam from an unactivated cell.

[0188] For a cell activated for L1 measurement, UE1010 may measure the SSB beam based on an RRC setting, e.g., a specified set of SSBs, or a blindly detected SSB. The specified set of SSBs may be received in an RRC message transmitted by base station 1060.

[0189] Furthermore, for cells activated for L1 measurement, the UE1010 may maintain tracking of at least one SSB beam for the activated cell. The selection of the beam to track may be performed by the UE itself, for example, based on the results of beam measurement.

[0190] If a pre-configured CSI-RS beam exists, the UE1010 may measure the CSI-RS beam based on the RRC settings for the activated cell.

[0191] Similar to the third exemplary implementation, in the fourth exemplary implementation, the list of cells may be set by RRC messages. MAC-CE messages may be used to activate the cells in the list.

[0192] Figure 17 also shows an exemplary MAC-CE message for a fourth exemplary implementation. In particular, each bit in the MAC-CE message may correspond to a cell in the list. The exemplary MAC-CE message supports up to 32 cells. For a cell, C i The field value is either 1 or 0, i is an integer between 0 and N, and N is the total number of cells supported by MAC-CE minus 1 (in this example, N=31).

[0193] For example, in the fourth exemplary implementation, a value of 1 indicates that the cell is activated, and a value of 0 indicates that the cell is not activated. For example, bit C0 1710 may indicate whether a first cell in the list is activated or not. Bit C1 1711 may indicate whether a second cell in the list is activated or not.

[0194] Alternatively, multiple cells may be grouped into a cell group, and each bit in the exemplary MAC-CE message in Figure 17 may indicate the activation of one cell group.

[0195] In a fifth exemplary implementation based on the third and fourth exemplary implementations, the cell indication further includes a status indication. Such a status indication may be a field of the MAC-CE message.

[0196] For example, a cell may have the following states: • Activated, • Inactivated, or Neither activated nor deactivated.

[0197] For the first value of the state indicator, the cell indicator may specify whether each cell in the set of cells is deactivated or not. For the second value of the state indicator, the cell indicator may specify whether each cell in the set of cells is activated or not.

[0198] For example, an exemplary MAC-CE message, such as the one shown in Figure 18, may include bit A / D 1820 (or the A / D field). This bit A / D 1820 may indicate whether the indicated cell is activated or deactivated. For example, a value of 1 for bit A / D 1820 corresponds to the indicated cell being activated, and a value of 0 corresponds to the cell being deactivated in the MAC-CE message.

[0199] Each bit C i (or C i The field corresponds to the set candidate cell for L1 measurement. For each cell, C i The field is either 1 or 0, i is an integer between 1 and N, and N represents the total number of cells supported by MAC-CE (in this example, N=31). For example, for cell activation (i.e., A / D=1), bit C1 1810 may indicate whether the first cell in the list is activated or not. Bit C2 1811 may indicate whether the second cell in the list is activated or not.

[0200] For example, in the case of cell deactivation (i.e., A / D=0), bit C1 1810 may indicate whether the first cell in the list is deactivated or not. Bit C2 1811 may indicate whether the second cell in the list is deactivated or not.

[0201] The example MAC-CE message in Figure 18 supports up to 31 cells.

[0202] If A / D is activated (i.e., A / D=1), then C i =1 indicates that the cell is activated, C i =0 indicates that the cell is not activated. If A / D indicates inactivation (i.e., A / D=0), then C i =1 indicates that the cell is deactivated, Ci =0 indicates that the cell is not deactivated.

[0203] The indication for a cell that is neither activated nor deactivated is, in the first MAC-CE with A / D=1 (i.e., activated), C for that cell. i In a second MAC-CE containing =0 and A / D=0 (i.e., inactive), C for the cell i =0 is allowed.

[0204] Alternatively, multiple cells can be grouped into a cell group, and each bit C in the exemplary MAC-CE message in Figure 18 can be represented. i This may indicate the activation or deactivation of a single cell group.

[0205] The activation and deactivation of a cell can be controlled separately, for example, by two MAC CEs containing the state indicator.

[0206] In the fifth implementation, during the execution of beam measurements of a beam, the UE, in particular the circuit, may perform the measurement of the beam on a cell that is not deactivated while in operation. If the cell is deactivated for L1 measurement, the UE does not need to measure any of the beams in the cell.

[0207] If the beam is contained within an activated cell, the beam may be measured and tracked. For example, if a cell is activated for L1 measurement, the UE measures the SSB beam (and the CSI-RS beam (if configured)) based on the RRC settings.

[0208] In the RRC configuration, if only one of the activated cell's SSB beams is configured to be measured by the UE, the UE may maintain tracking of this SSB beam.

[0209] If the RRC configuration has one or more SSB beams from activated cells that the UE is configured to measure, or if the RRC configuration indicates that the UE may autonomously detect SSB beams, the UE may maintain tracking of at least one SSB beam from an activated cell. The selection of the beam to track may be made by the UE, for example, based on the results of beam measurements.

[0210] If the beam in question is contained within a cell that is neither activated nor deactivated, the beam may be measured. For example, if a cell is neither activated nor deactivated, the UE measures the SSB (and the CSI-RS beam, if configured) based on the RRC settings. The UE is not required to maintain tracking of any SSB beams in an unactivated cell.

[0211] In other words, the circuit, when in operation, measures and tracks the beam contained in activated cells and measures the beam contained in cells that are neither activated nor deactivated.

[0212] <Initial state> Once a candidate cell is set in the UE, an initial state associated with the set cell may be determined. The initial state can be one of the following: activated, deactivated, or neither activated nor deactivated. For flexibility, the initial state may be set separately in the UE for each candidate cell. Such a setting may be included, for example, in the candidate cell setting. Alternatively, the initial state may be set separately and applied to all set cells in the UE. Another alternative approach is for a standard specification, such as a 3GPP technical specification, to define the initial state in order to reduce additional setting signaling overhead.

[0213] <Activation of cell and beam levels> In addition to the cell-level (de)activation described above, beam-level activation may be performed, for example, according to any of the third to fifth exemplary implementations.

[0214] For example, receiving the first instruction includes receiving a beam instruction in addition to the cell instruction. The beam instruction designates a set of activated beams as one or more measurement targets. The set of activated beams may include one or more beams. Such a beam instruction may be either the example or the exemplary implementation described in the above "beam-level activation".

[0215] When cell-level deactivation is indicated, beam-level activation may be applied to cells that are not deactivated. When cell-level activation is indicated, beam-level activation may be applied to the cells to be activated. When both cell-level activation and deactivation are indicated, beam-level activation may be applied to cells that are not deactivated.

[0216] When a beam is included in a cell that is not deactivated, or when the beam is included in a cell to be activated, measurements can be performed on the beam. In performing the measurement of the beam, when the beam is an activated beam, beam tracking is performed.

[0217] When a beam or a set of beams is activated in an activated cell, the UE does not need to maintain the tracking of self-selected beams other than the activated beams of that cell.

[0218] <Beam Selection for Measurement> To further reduce the measurement load of the UE, one or more beams may be selected according to one or more rules.

[0219] For example, UE1010, particularly, the circuit may obtain a threshold value for at least one of the measurement target or the serving cell during operation. Such a threshold value may be, for example, a reference signal received power (RSRP) threshold value, a reference signal received quality (RSRQ) threshold value, or a signal-to-noise and interference ratio (SINR) threshold value. With such a threshold value, a measurement target such as a beam, a set of beams, a cell, etc. may be referred to.

[0220] Beam measurement may be performed when the measurement target has an RSRP value, an RSRQ value, or an SINR value that exceeds the corresponding RSRP, RSRQ, or SINR threshold value of the measurement target. Alternatively, or in addition to this, beam measurement may be performed when the RSRP value, the RSRQ value, or the SINR value of the serving cell is below the corresponding RSRP, RSRQ, or SINR threshold value of the serving cell.

[0221] For example, the beam threshold value of L3 RSRP applicable to the beam of a non-serving cell may be provided to the UE, for example, by RRC configuration. The UE may perform L1 measurement on a beam that exceeds the threshold value, such as an SSB beam or a CSI-RS beam. Such L3 measurement may correspond to long-term measurement results such as time averaging.

[0222] For example, the cell threshold value of L3 RSRP applicable to the cell of a non-serving cell may be provided to the UE, for example, by RRC configuration. The UE may perform L1 measurement on the beams included in the cell that exceed the threshold value, such as an SSB beam or a CSI-RS beam.

[0223] For example, the cell threshold value of L3 RSRP applied to the serving cell is provided to the UE, for example, by RRC configuration. When the L3 RSRP value of the serving cell is lower than the threshold value, the UE performs L1 measurement on a beam, such as an SSB beam or a CSI-RS beam.

[0224] Any of the above thresholds may be absolute thresholds or relative thresholds (for example, between a serving cell and a non-serving cell, or between the best and worst beams with respect to the highest / lowest values ​​of RSRP or SINR).

[0225] For example, such a threshold may be expressed using the parameter ThresholdNR.

[0226] [Table 4]

[0227] ThresholdNR is defined in Non-Patent Document 10 and integrates a subset of eligible beams to derive cell measurement results. ThresholdNR can be reused to indicate whether or not an L1 measurement should be performed (either at the cell level or the beam level).

[0228] For example, a UE, in particular a circuit, may activate a timer when it receives a first instruction during operation. In other words, the timer is activated after the UE receives an activate / deactivate command. Such a timer may be pre-configured by the received settings (e.g., RRC settings) or standards. When the timer reaches a pre-configured time threshold, the activated / deactivated state of one or more meter is reset to a default value (e.g., initial state). In other words, when the timer expires, the state of the meter indicated by the first instruction is set to a default value. Such default values ​​may include, for example, deactivation for non-serving cells, deactivation of the beam in a non-serving cell (and therefore no beam tracking in a non-serving cell). Such default values ​​may depend on the number of meter included in the set of meter (e.g., RRC configured).

[0229] For example, if cell switching does not occur after a certain period of time, in other words, if the UE is static (i.e., not moving), the L1 measurement may be stopped to conserve power to the UE.

[0230] After a cell switch, the activated / deactivated state of one or more metric parameters may be maintained for the non-serving cell. Alternatively, the state of the non-serving cell may be reset to its default value. Meanwhile, the previous serving cell may remain activated or not deactivated because the UE may still be present within the coverage of the previous serving cell. The possibility that the UE may need to be switched back to the previous serving cell cannot be ignored.

[0231] The reception of an activation command, i.e., a first instruction, can be used to indicate a change in the periodicity of a beam, such as an SSB beam. For example, when a cell or SSB beam is activated, a shorter periodicity is applied. When a cell or SSB beam is deactivated, a longer periodicity is applied. This provides an opportunity for cell DTX (Discontinuous Transmission) to save energy in the network.

[0232] <Implementation of this disclosure through hardware and software> This disclosure can be implemented as software, hardware, or software in conjunction with hardware. Each functional block used in the description of the above embodiments may be implemented partially or entirely as an integrated circuit (LSI), and each process described in the above embodiments may be controlled partially or entirely by a single LSI or a combination of LSIs. An LSI may consist of individual chips, or it may consist of a single chip that includes some or all of the functional blocks. An LSI may have data inputs and outputs. Depending on the degree of integration, LSIs may be referred to as ICs, system LSIs, super LSIs, or ultra LSIs. The method of integrated circuit implementation is not limited to LSIs, and may also be implemented with dedicated circuits, general-purpose processors, or dedicated processors. Furthermore, an FPGA (Field Programmable Gate Array) that can be programmed after LSI manufacturing, or a reconfigurable processor that can reconfigure the connections and settings of circuit cells inside the LSI, may be used. This disclosure may be implemented as digital or analog processing. Furthermore, if advancements in semiconductor technology or other derived technologies lead to the emergence of integrated circuit technologies that replace LSIs, then naturally, it would be possible to use those technologies to integrate functional blocks. The application of biotechnology, for example, is a possibility.

[0233] This disclosure is applicable to all types of devices, systems, and equipment with communication capabilities (collectively referred to as communication equipment).

[0234] The communication device may include a wireless transceiver (transmitting unit) and a processing / control circuit. The wireless transceiver may include a receiving unit and a transmitting unit, or both as functions. The wireless transceiver (transmitting unit, receiving unit) may include an RF (Radio Frequency) module and one or more antennas. The RF module may include an amplifier, an RF modulator / demodulator, or something similar.

[0235] Non-limiting examples of communication devices include telephones (mobile phones, smartphones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital still / video cameras, etc.), digital players (digital audio / video players, etc.), wearable devices (wearable cameras, smartwatches, tracking devices, etc.), game consoles, digital book readers, telehealth / telemedicine (remote healthcare / medicine prescription) devices, vehicles or mobile transportation means with communication functions (automobiles, airplanes, ships, etc.), and combinations of the various devices described above.

[0236] The communication device is not limited to portable or movable ones, and includes all kinds of devices, devices, systems that cannot be carried or are fixed, for example, smart home devices (home appliances, lighting devices, smart meters or measuring devices, control panels, etc.), vending machines, and all other "Things" that may exist on the IoT (Internet of Things) network.

[0237] Communication includes data communication by cellular systems, wireless LAN systems, communication satellite systems, etc., as well as data communication by combinations of these.

[0238] The communication device also includes devices such as controllers and sensors that are connected or linked to a communication device that executes the communication functions described in this disclosure. For example, controllers and sensors that generate control signals and data signals used by the communication device that executes the communication functions of the communication device are included.

[0239] The communication device also includes infrastructure facilities, such as base stations, access points, and all other devices, devices, systems that communicate with or control the various non-limiting devices described above.

[0240] Furthermore, various embodiments may be implemented by software modules, which are executed by a processor or directly in hardware. Combinations of software modules and hardware implementations are also possible. The software modules can be stored in any type of computer-readable storage medium. In particular, other implementations provide non-temporary computer-readable recording media. When executed by one or more processors, the recording media stores a program that causes one or more processors to perform steps of the method according to this disclosure.

[0241] As an unrestricted example, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices, or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code in the form of instructions or data structures and can be accessed by a computer. Any connection is also referred to as computer-readable media, as appropriate. For example, if instructions are transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media. However, it should be understood that computer-readable storage media and data storage media do not include connections, carriers, signals, or other temporary media, but instead refer to non-temporary tangible storage media. The discs used herein include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy discs, and Blu-ray discs. "Disk" typically refers to a medium that reproduces data magnetically, while "disc" refers to a medium that reproduces data optically using a laser. Any combination of the above should also be included within the scope of computer-readable media.

[0242] Furthermore, it should be noted that individual features of several different embodiments can be the subject of other embodiments, individually or in any combination. Those skilled in the art will understand that various changes and / or modifications can be made to the specific embodiments of this disclosure without departing from the broadly defined concept or scope of the invention. Therefore, the embodiments described herein are illustrative in all respects and are not intended to limit the invention.

[0243] <Further aspects> According to a first embodiment, a user device (UE) is provided. The user device comprises a receiver and a circuit. More specifically, the user device comprises a receiver and a circuit. When operating, the receiver receives a first instruction specifying one or more objects to measure, each of which includes one or more beams. When operating, the circuit acquires a set of objects to measure, each set of objects to measure includes one or more objects, and acquires a subset of objects to measure from the set of objects based on the received first instruction, and performs beam measurements of the beams included in the objects of the acquired subset of objects to measure.

[0244] A second embodiment is provided in conjunction with the first embodiment, wherein the receiving unit, during operation, receives a second instruction specifying a preset set of objects to be measured before receiving the first instruction, and the acquisition of the set of objects to be measured includes acquiring the set of objects to be measured based on the received second instruction.

[0245] The third aspect is provided in conjunction with the first or second aspect, wherein the object to be measured is A cell containing one or more beams, Beam setup, and beam, It is one of the following.

[0246] A fourth aspect is provided in conjunction with any one of the first to third aspects, wherein the reception of the first instruction includes the reception of a MAC (Medium Access Control) CE (Control Element) message specifying one or more measurement targets.

[0247] A fifth aspect is provided in conjunction with either the second or third aspect, wherein the reception of the second instruction includes the reception of an RRC (Radio Resource Control) message specifying the pre-configured set of measurement targets.

[0248] A sixth embodiment is provided in conjunction with any one of the first to fifth embodiments, wherein the reception of the first instruction includes receiving a beam instruction specifying a set of activated beams as the one or more objects to be measured, the set of activated beams includes one or more beams, and in performing the beam measurement, the circuit, when operating, performs measurements of the activated beams included in the set of activated beams.

[0249] A seventh aspect is provided in conjunction with the sixth aspect, wherein, in performing the beam measurement, the circuit, in operation, performs a measurement of each beam in the set of activated beams and performs a track of each beam in the set of activated beams.

[0250] The eighth aspect is provided in conjunction with the seventh aspect, wherein the beams of the activated set of beams are either synchronization signal block (SSB) beams or channel state information reference signal (CSI-RS) beams.

[0251] A ninth aspect is provided in conjunction with the sixth aspect, wherein, in acquiring the set of objects to be measured, the circuit, in operation, acquires a predetermined set of beams, the predetermined set of beams is included in the set of objects to be measured, and in performing the beam measurement, the circuit, in operation, performs a measurement of each beam in the predetermined set of beams and performs a tracking of each beam in the activated set of beams.

[0252] A tenth aspect is provided in conjunction with the ninth aspect, wherein the beams of the set of activated beams are SSB beams.

[0253] An eleventh aspect is provided in conjunction with any one of the first to fifth aspects, wherein the reception of the first instruction includes the reception of a cell instruction specifying a set of cells as the one or more objects to be measured, the set of cells comprising one or more cells, the cell instruction specifying for a cell in the set of cells whether or not the cell is deactivated, and in the execution of the beam measurement for a beam contained in an undeactivated cell, the circuit, when operating, performs the measurement of the beam contained in the undeactivated cell.

[0254] A twelfth aspect is provided in conjunction with any one of the first to fifth aspects, wherein the reception of the first instruction includes the reception of a cell instruction specifying a set of cells as the one or more objects to be measured, the set of cells comprising one or more cells, the cell instruction specifying for a cell in the set of cells whether or not the cell is activated, and in the performance of the beam measurement, the circuit performs the measurement of the beam contained in the activated cell when in operation.

[0255] A thirteenth aspect is provided in conjunction with the eleventh or twelfth aspect, wherein the cell indicator further includes a state indicator, for a first value of the state indicator, the cell indicator specifies whether each cell in the set of cells is deactivated or not, and for a second value of the state indicator, the cell indicator specifies whether each cell in the set of cells is activated or not.

[0256] A fourteenth aspect is provided in conjunction with the thirteenth aspect, wherein, in performing the beam measurement of the beam, the circuit, while operating, performs measurement and tracking of the beam contained in activated cells and performs measurement of the beam contained in cells that are neither activated nor deactivated.

[0257] The 15th aspect is that the reception of the first instruction in the 11th to 14th aspects includes, in addition to the reception of the cell instruction, the reception of a beam instruction specifying a set of activated beams as one or more objects to be measured, the set of activated beams includes one or more beams, and in the performance of the measurement of the beams, the circuit performs tracking when the beams are activated beams.

[0258] The 16th embodiment is provided in conjunction with any one of the 11th to 15th embodiments, wherein the circuit, in operation, acquires a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, or a Signal-to-Noise and Interference Ratio (SINR) threshold for at least one of the objects under measurement or serving cells, and the beam measurement is performed if the object under measurement has an RSRP value, RSRQ value, or SINR value that is greater than the RSRP threshold, RSRQ threshold, or SINR threshold corresponding to the object under measurement, or if the RSRP value, RSRQ value, or SINR value of the serving cell is less than the RSRP threshold, RSRQ threshold, or SINR threshold corresponding to the serving cell.

[0259] The 17th embodiment is provided in conjunction with any one of the first to 16th embodiments, wherein, during operation, upon receiving the first instruction, the circuit activates a preset timer, and upon the expiration of the timer, sets the state of the object to be measured, as indicated by the first instruction, to a default value.

[0260] An 18th aspect is provided in conjunction with any one of the first through 17th aspects, wherein the reception of the first instruction further indicates a change in a specific beam period included in the subset of the objects being measured.

[0261] According to the 19th aspect, a base station is provided. The base station comprises a transmitting unit and a circuit. When operating, the circuit acquires a set of objects to be measured, the objects to be measured in the set of objects to be measured include one or more beams, and generates an instruction to specify a subset of objects to be measured from the set of objects to be measured. The transmitting unit transmits the instruction specifying the subset of objects to be measured.

[0262] According to a 20th aspect, a method is provided for performing beam measurements using a user device (UE). This method includes receiving a first instruction specifying one or more objects to measure, each of which includes one or more beams; acquiring a set of objects to measure, the set of objects to measure includes the one or more objects to measure; acquiring a subset of objects to measure from the set of objects based on the received first instruction; and performing beam measurements of the beams included in the acquired subset of objects to measure.

[0263] According to a 21st aspect, a method is provided for transmitting a setting instruction by a base station. This method includes acquiring a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams; generating an instruction specifying a subset of objects to be measured from the set of objects to be measured; and transmitting the instruction specifying the subset of objects to be measured.

[0264] According to the 22nd aspect, an integrated circuit is provided. This integrated circuit controls the processing of a user device during operation, and the processing is performed by the user device. A step of receiving a first instruction specifying one or more measurement targets, each of which includes one or more beams, A step of acquiring a set of objects to be measured, wherein the set of objects to be measured includes one or more objects to be measured. Based on the first instruction received, the steps include obtaining a subset of the objects to be measured from the set of objects to be measured, The steps include: performing beam measurements on the beams included in the acquired subset of the target to be measured; Includes.

[0265] According to the 23rd embodiment, an integrated circuit is provided. This integrated circuit controls the processing of a base station during operation, and the processing is performed by the base station. A step of acquiring a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams. The steps include generating an instruction to specify a subset of the items to be measured from the set of items to be measured, The steps include: transmitting the instruction specifying the subset of the object to be measured; Includes.

[0266] According to the 24th aspect, a program stored in a storage medium and including code instructions, wherein when the code instructions are executed on one or more processors of a user device, the one or more processors A step of receiving a first instruction specifying one or more measurement targets, each of which includes one or more beams, A step of acquiring a set of objects to be measured, wherein the set of objects to be measured includes one or more objects to be measured. Based on the first instruction received, the steps include obtaining a subset of the objects to be measured from the set of objects to be measured, The steps include: performing beam measurements on the beams included in the acquired subset of the target to be measured; Make it run.

[0267] According to the 25th aspect, a program stored in a storage medium and including code instructions, wherein when the code instructions are executed in one or more processors of a base station, the one or more processors A step of acquiring a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams. The steps include generating an instruction to specify a subset of the items to be measured from the set of items to be measured, The steps include: transmitting the instruction specifying the subset of the object to be measured; Make it run.

[0268] In summary, this disclosure relates to user equipment, base station equipment, and methods for user equipment and base stations. More specifically, the user equipment comprises a receiver and a circuit. When operating, the receiver receives a first instruction specifying one or more measurement targets, each of which includes one or more beams. When operating, the circuit acquires a set of measurement targets including one or more measurement targets, acquires a subset of measurement targets from the set of measurement targets based on the received first instruction, and performs beam measurements of the beams included in the acquired subset of measurement targets.

Claims

1. A receiving unit that receives a first instruction specifying one or more measurement targets during operation, wherein each of the measurement targets includes one or more beams, and the receiving unit A circuit, wherein the circuit operates as follows: A set of objects to be measured is obtained, and the set of objects to be measured includes one or more of the objects to be measured. Based on the first instruction received, a subset of the measurement targets is obtained from the set of measurement targets, A circuit that performs beam measurements on the beams included in the acquired subset of the target to be measured, User equipment (UE) that includes the following features.

2. When the receiving unit is in operation, before receiving the first instruction, it receives a second instruction that specifies a preset set of measurement targets. The acquisition of the set of objects to be measured includes acquiring the set of objects to be measured based on the second instruction received. The user device according to claim 1.

3. The object to be measured is, A cell containing one or more beams, Beam setup, and beam, It is one of the following: The user device according to claim 1 or 2.

4. The reception of the first instruction includes the reception of a MAC (Medium Access Control) CE (Control Element) message specifying one or more measurement targets. The user device according to claim 1.

5. The reception of the second instruction includes receiving an RRC (Radio Resource Control) message specifying the set of pre-configured measurement targets, The user device according to claim 2.

6. Receiving the first instruction includes receiving a beam instruction specifying a set of activated beams as one or more measurement targets, wherein the set of activated beams includes one or more beams. In performing the beam measurement, the circuit, when operating, performs a measurement of the activated beams included in the set of activated beams. The user device according to claim 1.

7. During the execution of the beam measurement, the circuit operates as follows: Perform measurements on each beam of the set of activated beams, Perform tracking of each beam in the set of activated beams. The user device according to claim 6.

8. The beams in the set of activated beams are either a Synchronization Signal Block (SSB) beam or a Channel State Information Reference Signal (CSI-RS) beam. The user device according to claim 7.

9. In acquiring the set of objects to be measured, the circuit acquires a predetermined set of beams during operation, and the predetermined set of beams is included in the set of objects to be measured. During the execution of the beam measurement, the circuit operates as follows: Perform measurements on each beam of the predetermined set of beams, Perform tracking of each beam in the set of activated beams. The user device according to claim 6.

10. The beams in the aforementioned set of activated beams are SSB beams. The user device according to claim 9.

11. The reception of the first instruction includes the reception of a cell instruction specifying a set of cells as one or more measurement targets, the set of cells including one or more cells, The cell instruction specifies whether or not a cell in the set of cells is deactivated. With respect to the beam contained in the non-deactivated cell, in the execution of the beam measurement, the circuit performs the measurement of the beam contained in the non-deactivated cell when it is in operation. The user device according to claim 1.

12. The reception of the first instruction includes the reception of a cell instruction specifying a set of cells as one or more measurement targets, the set of cells including one or more cells, The cell instruction specifies whether or not a cell in the set of cells is activated. With respect to the beam contained in the activated cell, in the execution of the beam measurement, the circuit performs the measurement of the beam contained in the activated cell when it is in operation. The user device according to claim 1.

13. The cell indication further includes a state indication, With respect to the first value of the state indication, the cell indication specifies whether or not the cell in the set of cells is deactivated. With respect to the second value of the state indication, the cell indication specifies whether or not the cell is activated for each cell in the set of cells. User device according to claim 11 or 12.

14. In performing the beam measurement of the beam, the circuit operates as follows: Perform measurements and tracking of the beam contained in the activated cell. Perform measurements of the beam contained in cells that are neither activated nor deactivated. The user device according to claim 13.

15. The reception of the first instruction includes, in addition to the reception of the cell instruction, the reception of a beam instruction specifying a set of activated beams as one or more measurement targets, wherein the set of activated beams includes one or more beams. In performing the measurement of the beam, the circuit performs tracking if the beam is an activated beam during operation. The user device according to claim 11.

16. During operation, the circuit acquires, for at least one of the objects to be measured or serving cells, a Reference Signal Received Power (RSRP) threshold, a Reference Signal Received Quality (RSRQ) threshold, or a Signal-to-Noise and Interference Ratio (SINR) threshold. The aforementioned beam measurement is performed If the object to be measured has an RSRP value, RSRQ value, or SINR value that exceeds the RSRP threshold, RSRQ threshold, or SINR threshold corresponding to the object to be measured, or If the RSRP value, RSRQ value, or SINR value of the serving cell falls below the RSRP threshold, RSRQ threshold, or SINR threshold corresponding to the serving cell, Executed The user device according to claim 11.

17. The circuit, when in operation, Upon receiving the first instruction, the pre-set timer is activated. When the timer expires, the state of the object to be measured, as indicated by the first instruction, is set to the default value. The user device according to claim 1.

18. The reception of the first instruction further indicates a change in the period of the beam included in the subset of the measurement target. The user device according to claim 1.

19. A circuit, wherein the circuit operates as follows: A set of objects to be measured is obtained, and each object in the set of objects to be measured includes one or more beams. A circuit that generates an instruction to specify a subset of the set of items to be measured from the set of items to be measured, During operation, a transmission unit transmits the instruction to specify the subset of the object to be measured, A base station equipped with the necessary components.

20. A method for performing beam measurements using user equipment (UE), Receiving a first instruction specifying one or more measurement targets, each of which includes one or more beams, The acquisition of a set of objects to be measured, wherein the set of objects to be measured includes one or more of the objects to be measured. Based on the received first instruction, a subset of the measurement targets is obtained from the set of measurement targets, Perform beam measurements on the beams included in the acquired subset of measurement targets, Methods that include...

21. A method for transmitting configuration instructions from a base station, The acquisition involves obtaining a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams. The process involves generating instructions to specify a subset of the items to be measured from the aforementioned set of items to be measured, Sending the instruction to specify the subset of the object to be measured, Methods that include...

22. An integrated circuit that controls the processing of user equipment during operation, The above process is performed by the user device. A step of receiving a first instruction specifying one or more measurement targets, wherein each of the measurement targets includes one or more beams, A step of acquiring a set of objects to be measured, wherein the set of objects to be measured includes one or more objects to be measured. Based on the first instruction received, the steps include obtaining a subset of the measurement targets from the set of measurement targets, The steps include: performing beam measurements on the beams included in the acquired subset of the target to be measured; An integrated circuit, including

23. An integrated circuit that controls the processing of a base station during operation, The above process is performed by the base station. A step of acquiring a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams. The steps include generating an instruction to specify a subset of the items to be measured from the set of items to be measured, The steps include: transmitting the instruction specifying the subset of the object to be measured; An integrated circuit, including

24. A program stored on a storage medium and containing code instructions, When the code instruction is executed on one or more processors of the user device, the one or more processors will: A step of receiving a first instruction specifying one or more measurement targets, wherein each of the measurement targets includes one or more beams, A step of acquiring a set of objects to be measured, wherein the set of objects to be measured includes one or more objects to be measured. Based on the first instruction received, the steps include obtaining a subset of the measurement targets from the set of measurement targets, The steps include: performing beam measurements on the beams included in the acquired subset of the target to be measured; A program that executes something.

25. A program stored on a storage medium and containing code instructions, When the code instruction is executed on one or more processors of the network node, the one or more processors will: A step of acquiring a set of objects to be measured, wherein the objects to be measured in the set of objects to be measured include one or more beams. The steps include generating an instruction to specify a subset of the items to be measured from the set of items to be measured, The steps include: transmitting the instruction specifying the subset of the object to be measured; A program that executes something.

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