User equipment, scheduling node, method for user equipment and method for scheduling node

Abstract

Some exemplary embodiments relate to a communication device, a base station, and corresponding methods for the communication device and the base station. For example, a communication device is a user equipment (UE) including circuitry and a transceiver. The circuitry may be configured to (a) obtain, from the control signaling, an indication of a change in a configuration indicating a transmission opportunity for a resource configuration configured by the UE, where (i) the resource configuration is a configured grant (CG) configuration, a semi-persistent scheduling (SPS) configuration, or a scheduling request (SR) configuration, and (ii) the control signaling is downlink control signaling (DCI) and / or the indication of the change is an indication of a valid time, where (i) the resource configuration is a configuration grant (CG) configuration, a semi-persistent scheduling (SPS) configuration, or a scheduling request (SR) configuration, and (ii) the control signaling is a downlink control signaling (DCI) and / or the indication of the change is an indication of a valid time. The effective time is the effective duration of the transmission opportunity of the resource configuration after the activation of the resource configuration; and (b) changing the configuration of the transmission opportunity by applying the indicated change. The transceiver may be configured to receive control signaling and to receive or transmit a transmission using one of the transmission opportunities of the changed configuration.

Description

Background Art 1. Technical Field

[0001] The present disclosure relates to the transmission and reception of signals in a communication system such as a 3GPP communication system. In particular, the present disclosure relates to methods and apparatus for such transmission and reception.

[0002] 2. Description of Related Technology

[0003] The 3rd Generation Partnership Project (3GPP) works on technical specifications for the next generation of cellular technology, also known as fifth generation (5G), including "New Radio" (NR) radio access technology (RAT) operating in the frequency range up to 100 GHz. NR is a follower of the technology represented by Long Term Evolution (LTE) and LTE-Advanced (LTE-A).

[0004] For systems like LTE and NR, further improvements and options may facilitate efficient operation of the communication systems as well as specific equipment related to the systems. Summary of the invention

[0005] One non-limiting and exemplary embodiment facilitates increasing efficiency in resource usage, particularly in scenarios with periodic traffic.

[0006] In one embodiment, the technology disclosed herein is characterized by an apparatus (e.g., user equipment UE). The apparatus includes a transceiver and a circuit. The circuit: (a) obtains an indication of a change in configuration of a transmission opportunity of a resource configuration from control signaling, and configures the UE with the resource configuration, wherein (i) the resource configuration is a configured grant (CG) configuration, a semi-persistent scheduling (SPS) configuration, or a scheduling request (SR) configuration, and (ii) the control signaling is downlink control signaling (DCI) and / or the indication indicating the change is an indication of a valid time, which is a duration for which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; and (b) changes the configuration of the transmission opportunity by applying the indicated change. The transceiver receives the control signaling and receives or sends a transmission using one of the changed configured transmission opportunities.

[0007] It should be noted that the general or specific embodiments may be implemented as a system, a method, an integrated circuit, a computer program, a storage medium, or any selective combination thereof.

[0008] Additional benefits and advantages of the disclosed embodiments will become apparent from the description and drawings. Benefits and / or advantages may be obtained individually from various embodiments and features of the description and drawings, and all of these embodiments and features do not need to be provided in order to obtain one or more such benefits and / or advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Hereinafter, exemplary embodiments are described in more detail with reference to the accompanying drawings.

[0010] Figure 1 An exemplary architecture of a 3GPP NR system is shown;

[0011] Figure 2 is a schematic diagram showing the functional division between NG-RAN and 5GC;

[0012] Figure 3 is a sequence diagram of the RRC connection establishment / reconfiguration procedure;

[0013] Figure 4 is a schematic diagram illustrating usage scenarios of enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC);

[0014] Figure 5 is a block diagram illustrating an exemplary 5G system architecture for non-roaming;

[0015] Figure 6 The relationship between bandwidth part, control resource set (CORESET), search space, search space set and PDCCH candidates is shown.

[0016] Figure 7 An exemplary time domain structure in a communication system such as 5G NR is shown, including radio frames, subframes, time slots, and OFDM symbols for different subcarrier spacings,

[0017] Figure 8 shows the signaling overhead in the case where the UE uses scheduling requests to dynamically schedule uplink resources for sending XR traffic;

[0018] Fig. 9 It shows that CG uplink resources are over-provisioned to UEs sending XR traffic;

[0019] Fig.10 Over-provisioning of SPS downlink resources to UEs receiving XR traffic is shown;

[0020] Fig.11 is a block diagram of a communication system including a user equipment and a base station having their respective exemplary functional structures;

[0021] Fig.12 is a block diagram showing an exemplary functional structure of a processing circuit on the user equipment side;

[0022] Fig.13 is a block diagram showing an exemplary functional structure of a processing circuit on the base station side;

[0023] Fig.14 is a flow chart illustrating exemplary steps performed by a network node and exemplary steps performed by a user equipment;

[0024] Fig.15 shows the reduction in overhead due to using group-based DCI for each resource configuration of the reconfiguration configuration group;

[0025] Fig.16 shows the reduction in overhead due to configuring the UE with the maximum number of active configuration groups;

[0026] Fig.17 shows a reduction in overhead due to configuring resource configurations with validity times; and

[0027] Fig.18 The reduction in overhead due to the linking of two resource configurations such that one of them activates the other when it itself deactivates is shown. DETAILED DESCRIPTION

[0028] 5G NR system architecture and protocol stack

[0029] 3GPP is already working on the next version of the 5th generation of cellular technology, or 5G for short, including the development of a new radio access technology (NR) operating in the frequency range up to 100 GHz. The first version of the 5G standard was completed at the end of 2017, which allowed trials and commercial deployment of smartphones compliant with the 5G NR standard.

[0030] The overall system architecture assumes, among other things, a NG-RAN (Next Generation Radio Access Network) comprising gNBs, which provide NG-Radio Access user plane (SDAP / PDCP / RLC / MAC / PHY) and control plane (RRC) protocol terminations to the UE. The gNBs are interconnected to each other via an Xn interface. The gNBs are also connected to an NGC (Next Generation Core) by means of a Next Generation (NG) interface, more specifically to an AMF (Access and Mobility Management Function) (e.g., a specific core entity implementing the AMF) by means of an NG-C interface, and to an UPF (User Plane Function) (e.g., a specific core entity implementing the UPF) by means of an NG-U interface. Figure 1 The NG-RAN architecture is shown in (see, for example, 3GPP TS 38.300 v15.6.0, section 4).

[0031] The user plane protocol stack for NR (see, e.g., 3GPP TS 38.300, Section 4.4.1) includes the PDCP (Packet Data Convergence Protocol, see Section 6.4 of TS 38.300), RLC (Radio Link Control, see Section 6.3 of TS 38.300) and MAC (Medium Access Control, see Section 6.2 of TS 38.300) sublayers, which terminate in the gNB on the network side. In addition, a new access stratum (AS) sublayer (SDAP, Service Data Adaptation Protocol) is introduced above PDCP (see, e.g., subclause 6.5 of 3GPP TS 38.300). A control plane protocol stack is also defined for NR (see, e.g., TS 38.300, Section 4.4.2). An overview of the Layer 2 functionality is given in subclause 6 of TS 38.300. The functionality of the PDCP, RLC and MAC sublayers are listed in Sections 6.4, 6.3 and 6.2 of TS 38.300, respectively. The functions of the RRC layer are listed in subclause 7 of TS 38.300.

[0032] For example, the medium access control layer handles logical channel multiplexing as well as scheduling and scheduling-related functions, including handling different parameter sets.

[0033] The physical layer (PHY) is responsible for, for example, coding, PHY HARQ processing, modulation, multi-antenna processing, and mapping signals to appropriate physical time-frequency resources. It 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 to transmit a specific transport channel, and each transport channel is mapped to a corresponding physical channel. For example, physical channels are PRACH (Physical Random Access Channel), PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel) for uplink and PDSCH (Physical Downlink Shared Channel), PDCCH (Physical Downlink Control Channel) and PBCH (Physical Broadcast Channel) for downlink.

[0034] NR use cases / deployment scenarios may include enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine type communications (mMTC), which have different requirements in terms of data rate, latency and coverage. For example, eMBB is expected to support peak data rates (20Gbps for downlink and 10Gbps for uplink) and user experienced data rates that are three times the data rates provided by Advanced IMT. On the other hand, in the case of URLLC, there are requirements for ultra-low latency (0.5ms for both UL and DL for user plane latency) and high reliability (1-10 Mbps within 1ms). -5) puts forward more stringent requirements. Finally, mMTC may preferably require high connection density (1,000,000 devices / km in urban environments) 2 ), wide coverage in harsh environments, and extremely long battery life (15 years) for low-cost devices.

[0035] Therefore, an OFDM parameter set (e.g., subcarrier spacing, OFDM symbol duration, cyclic prefix (CP) duration, number of symbols per scheduling interval) that is suitable for one use case may not be suitable for another use case. For example, low-latency services may preferably require shorter symbol duration (and therefore larger subcarrier spacing) and / or fewer symbols per scheduling interval (also called TTI) compared to mMTC services. In addition, deployment scenarios with large channel delay spread may preferably require longer CP duration than scenarios with short delay spread. The subcarrier spacing should be optimized accordingly to maintain similar CP overhead. NR can support more than one value of subcarrier spacing. Accordingly, subcarrier spacings of 15kHz, 30kHz, 60kHz, ... are being considered at this time. Symbol duration T u and subcarrier spacing Δf by the formula Δf = 1 / T u In a similar manner as in the LTE system, the term "resource element" may be used to denote a minimum resource unit consisting of one subcarrier of the length of one OFDM / SC-FDMA symbol.

[0036] In the new radio system 5G-NR, for each parameter set and carrier, a resource grid of subcarriers and OFDM symbols is defined for uplink and downlink, respectively. Each element in the resource grid is called a resource element and is identified based on a frequency index in the frequency domain and a symbol position in the time domain (see 3GPP TS 38.211v16.2.0, e.g. Section 4). For example, downlink and uplink transmissions are organized into frames with a duration of 10ms, each frame consisting of ten subframes with a duration of 1ms respectively. In a 5g NR implementation, the number of consecutive OFDM symbols per subframe depends on the subcarrier spacing configuration. For example, for a 15-kHz subcarrier spacing, a subframe has 14 OFDM symbols (similar to an implementation compliant with LTE, assuming a normal cyclic prefix). On the other hand, for a 30-kHz subcarrier spacing, a subframe has two slots, each of which includes 14 OFDM symbols.

[0037] Compared to the LTE parameter sets (subcarrier spacing and symbol length), NR supports multiple different types of subcarrier spacing, which are marked by the parameter μ (in LTE, there is only a subcarrier spacing of 15kHz, corresponding to μ=0 in NR). The NR parameter set types are summarized in 3GPP TS38.211, v15.7.0.

[0038] 5G NR functional division between NG-RAN and 5GC

[0039] Figure 2 The functional division between NG-RAN and 5GC is shown. The NG-RAN logical node is gNB or ng-eNB. 5GC has logical nodes AMF, UPF and SMF.

[0040] Specifically, gNB and ng-eNB host the following main functions:

[0041] - Functions for radio resource management, such as radio bearer control, radio admission control, connection mobility control, dynamic allocation of resources to UEs in both uplink and downlink (scheduling);

[0042] -IP header compression, encryption and data integrity protection;

[0043] - When the route to the AMF cannot be determined from the information provided by the UE, the AMF is selected when the UE attaches;

[0044] - Routing user plane data towards UPF;

[0045] - Routing control plane information towards the AMF;

[0046] -Connection establishment and release;

[0047] - Scheduling and transmission of paging messages;

[0048] - Scheduling and transmission of system broadcast information (derived from AMF or OAM);

[0049] - Measurements and measurement reporting configuration for mobility and scheduling;

[0050] -Transport level packet marking in uplink;

[0051] -Session management;

[0052] - Network slicing support;

[0053] -QoS flow management and mapping to data radio bearers;

[0054] - Support for UEs in RRC_INACTIVE state;

[0055] -NAS message distribution function;

[0056] - Radio access network sharing;

[0057] -Dual connectivity;

[0058] - Tight interworking between NR and E-UTRA.

[0059] The Access and Mobility Management Function (AMF) hosts the following key functions:

[0060] - Non-access stratum NAS signaling termination;

[0061] -NAS signaling security;

[0062] -Access layer AS security control;

[0063] - Core Network CN inter-node signalling for mobility between 3GPP access networks;

[0064] - Idle mode UE reachability (including control and operation of paging retransmissions);

[0065] -Registration area management;

[0066] -Support for intra-system and inter-system mobility;

[0067] -Access authentication;

[0068] - Access authorization, including roaming rights checks;

[0069] - Mobility management control (subscription and policy);

[0070] - Network slicing support;

[0071] -Session Management Function, SMF, select.

[0072] Additionally, the User Plane Function (UPF) hosts the following key functions:

[0073] - Anchor point for intra-RAT / inter-RAT mobility (when applicable);

[0074] - External PDU session points for interconnection to data networks;

[0075] -Packet routing and forwarding;

[0076] -Packet inspection and user plane part of policy rule enforcement;

[0077] - Traffic usage reports;

[0078] - an uplink classifier to support routing of traffic flows to the data network;

[0079] -Support branching points for multi-host PDU sessions;

[0080] - QoS processing in the user plane, such as packet filtering, gating, UL / DL rate enforcement;

[0081] - Uplink traffic verification (SDF to QoS flow mapping);

[0082] - Downlink packet buffering and downlink data notification triggering.

[0083] Finally, the session management function SMF hosts the following main functions:

[0084] -Session management;

[0085] -UE IP address allocation and management;

[0086] -UP function selection and control

[0087] -Configure traffic steering at the User Plane Function (UPF) to route traffic to the appropriate destination;

[0088] -Policy implementation and QoS control part;

[0089] - Downlink data notification.

[0090] RRC connection establishment and reconfiguration procedures

[0091] Figure 3 Some interactions between the UE, gNB and AMF (5GC entity) in the context of the UE transitioning from RRC_IDLE to RRC_CONNECTED on the NAS part are shown (see, for example, TS 38.300 v15.6.0).

[0092] RRC is a higher layer signaling (protocol) used for UE and gNB configuration. Specifically, the transition involves the AMF preparing UE context data (including, for example, PDU session context, security keys, UE radio capabilities and UE security capabilities, etc.) and sending it to the gNB along with the Initial Context Setup Request. The gNB then activates AS security with the UE, which is performed by the gNB sending a SecurityModeCommand message to the UE and by the UE responding to the gNB with a SecurityModeComplete message. Thereafter, the gNB performs reconfiguration to establish signaling radio bearer 2, SRB2, and data radio bearer DRB by sending an RRCReconfiguration message to the UE and receiving RRCReconfigurationComplete from the UE by the gNB in ​​response. For signaling-only connections, the steps related to RRCReconfiguration are skipped since SRB2 and DRB are not established. Finally, the gNB notifies the AMF of the completion of the establishment procedure with the Initial Context Setup Response.

[0093] Therefore, in the present disclosure, an entity (e.g., AMF, SMF, etc.) of a fifth generation core (5GC) is provided, the entity including a control circuit and a transmitter, the control circuit establishing a next generation (NG) connection with a gNodeB, the transmitter sending an initial context establishment message to the gNodeB via the NG connection to perform signaling radio bearer establishment between the gNodeB and a user equipment (UE). Specifically, the gNodeB sends a radio resource control RRC signaling containing a resource allocation configuration information element to the UE via the signaling radio bearer. Then, the UE performs uplink transmission or downlink reception based on the resource allocation configuration.

[0094] IMT use cases in 2020 and beyond

[0095] Figure 4 Some use cases for 5G NR are shown. In the 3rd Generation Partnership Project New Radio (3GPP NR), three use cases are being considered, which have been envisioned to support various services and applications of IMT-2020. The specification of Phase 1 of enhanced mobile broadband (eMBB) has been finalized. In addition to further extending eMBB support, current and future work will involve the standardization of ultra-reliable and low-latency communications (URLLC) and massive machine-type communications. Figure 4 Some examples of envisaged usage scenarios for IMT for 2020 and beyond are shown (see for example ITU-R M.2083 Figure 2 ).

[0096] URLLC use cases have stringent requirements on capabilities such as throughput, latency, and availability, and have been envisioned as one of the enablers for future vertical applications such as wireless control of industrial manufacturing or production processes, telemedicine surgery, distribution automation in smart grids, transportation safety, etc. Ultra-reliability for URLLC will be supported by identifying technologies that meet the requirements set by TR 38.913. For NR URLLC in Release 15, key requirements include a target user plane latency of 0.5ms for UL (uplink) and a target user plane latency of 0.5ms for DL ​​(downlink). The general URLLC requirement for one transmission of a packet is a BLER (block error rate) of 1E-5 for a packet size of 32 bytes with a user plane latency of 1ms.

[0097] From a physical layer perspective, reliability can be improved in a number of possible ways. The current scope for improving reliability involves defining a separate CQI table for URLLC, a more compact DCI format, repetition of PDCCH, etc. However, as NR becomes more stable and developed (for NR URLLC key requirements), the scope for achieving ultra-reliability can be expanded. Specific use cases for NR URLLC in Rel.15 include augmented reality / virtual reality (AR / VR), e-health, e-safety, and mission-critical applications.

[0098] In addition, the technical enhancements targeted by NR URLLC are aimed at latency improvement and reliability improvement. Technical enhancements for latency improvement include configurable parameter sets, non-slot-based scheduling with flexible mapping, unlicensed (configured authorization) uplink, slot-level repetition for data channels, and downlink preemption. Preemption means that the transmission for which resources have been allocated is stopped, and the allocated resources are used for another transmission requested later but with lower latency / higher priority requirements. Therefore, the authorized transmission is preempted by the later transmission. Preemption is applicable independently 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 reliability improvement include a dedicated CQI / MCS table with a target BLER of 1E-5.

[0099] The use case of mMTC (massive machine type communications) is characterized by a very large number of connected devices that typically send relatively small amounts of non-delay sensitive data. The devices need to be low cost and have very long battery life. From the NR perspective, utilizing very narrow bandwidth portions is a possible solution to save power from the UE's perspective and achieve long battery life.

[0100] As mentioned above, the reliability range in NR is expected to become wider. A key requirement for all cases, and a key requirement that is particularly necessary for URLLC and mMTC is high reliability or ultra-reliability. Several mechanisms can be considered to improve reliability from a radio perspective and a network perspective. In general, there are several key potential areas that can help improve reliability. These areas include compact control channel information, data / control channel repetition, and diversity with respect to the frequency domain, time domain, and / or spatial domain. These areas are generally applicable to reliability, regardless of the specific communication scenario.

[0101] For NR URLLC, further use cases with more stringent requirements have been identified, such as factory automation, transportation industry and power distribution. The more stringent requirements are higher reliability (up to 10 -6 level), higher availability, packet sizes up to 256 bytes, time synchronization down to the order of a few μs (where the value can be one or a few μs, depending on the frequency range), and short latency on the order of 0.5 to 1 ms (specifically a target user plane latency of 0.5 ms, depending on the use case).

[0102] In addition, for NR URLLC, several technical enhancements have been identified from a physical layer perspective. They are PDCCH (Physical Downlink Control Channel) enhancements associated with compact DCI, PDCCH repetition, and increased PDCCH monitoring. In addition, UCI (Uplink Control Information) enhancements are associated with enhanced HARQ (Hybrid Automatic Repeat Request) and CSI feedback enhancements. PUSCH enhancements associated with mini-slot level hopping and retransmission / repetition enhancements have also been identified. The term "mini-slot" refers to a transmission time interval (TTI) that includes a smaller number of symbols than a slot (a slot including fourteen symbols).

[0103] QoS Control

[0104] The 5G QoS (Quality of Service) model is based on QoS flows and supports QoS flows that require guaranteed flow bit rate (GBR QoS flows) and QoS flows that do not require guaranteed flow bit rate (non-GBR QoS flows). At the NAS level, QoS flows are therefore the finest granularity of QoS differentiation within a PDU session. QoS flows are identified within a PDU session by the QoS Flow ID (QFI) carried in the encapsulation header on the NG-U interface.

[0105] For each UE, the 5GC establishes one or more PDU Sessions. For each UE, the NG-RAN establishes at least one Data Radio Bearer (DRB) together with the PDU Session, and may subsequently configure additional DRBs for QoS flows for that PDU Session (when to do so is determined by the NG-RAN), e.g., as described above with reference to Figure 3 As shown. NG-RAN maps packets belonging to different PDU sessions to different DRBs. NAS-level packet filters in the UE and in the 5GC associate UL and DL packets with QoS flows, while AS-level mapping rules in the UE and in the NG-RAN associate UL and DL QoS flows with DRBs.

[0106] Figure 5 The 5G NR non-roaming reference architecture is shown (see TS 23.501 v16.1.0, section 4.23). Figure 4 The application function (AF) exemplarily described in (e.g., an external application server hosting 5G services) interacts with the 3GPP core network to provide services, such as to support applications that affect traffic routing, access network exposure functions (NEFs), or interact with policy frameworks for policy control (see Policy Control Function, PCF, such as QoS control). Based on operator deployment, application functions that are considered to be trusted by the operator may be allowed to interact directly with related network functions. Application functions that are not allowed by the operator to directly access network functions use external exposure frameworks via NEFs to interact with related network functions.

[0107] Figure 5 Other functional units of the 5G architecture are shown, namely, 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), such as operator services, Internet access or third-party services. All or part of the core network functions and application services can be deployed and run on a cloud computing environment.

[0108] Therefore, in the present disclosure, an application server (e.g., AF of a 5G architecture) is provided, which includes a transmitter and a control circuit, which sends a request containing QoS requirements of at least one of URLLC, eMMB and mMTC services to at least one of the functions of 5GC (e.g., NEF, AMF, SMF, PCF, UPF, etc.) to establish a PDU session including a radio bearer between a gNodeB and a UE according to the QoS requirements, and the control circuit performs the service using the established PDU session.

[0109] Uplink / Downlink / Sidelink

[0110] The present disclosure may be applied to any one of an uplink, a downlink, and a sidelink.

[0111] The present disclosure can be applied to, for example, uplink channels (such as PUSCH, PUCCH and PRACH), downlink channels (such as PDSCH, PDCCH and PBCH), and sidelink channels (such as physical sidelink shared channel (PSSCH), physical sidelink control channel (PSCCH) and physical sidelink broadcast channel (PSBCH)).

[0112] PDCCH, PDSCH, PUSCH and PUCCH are examples of downlink control channels, downlink data channels, uplink data channels and uplink control channels, respectively. PSCCH and PSSCH are examples of sidelink control channels and sidelink data channels, respectively. PBCH and PSBCH are examples of broadcast channels, respectively, and PRACH is an example of a random access channel.

[0113] Data channel / control channel

[0114] The present disclosure may be applied to any one of a data channel and a control channel. The channels in the present disclosure may be replaced with data channels including PDSCH, PUSCH and PSSCH and / or control channels including PDCCH, PUCCH, PBCH, PSCCH and PSBCH.

[0115] Reference signal

[0116] In the present disclosure, a reference signal is a signal known to both a base station and a mobile station, and each reference signal may be referred to as a reference signal (RS) or sometimes referred to as a pilot signal. The reference signal may be any of a DMRS, a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a phase tracking reference signal (PTRS), a cell-specific reference signal (CRS), and a sounding reference signal (SR).

[0117] Time interval

[0118] In the present disclosure, the time resource unit is not limited to one or a combination of a time slot and a symbol, and may be a time resource unit such as a frame, a superframe, a subframe, a time slot, a time slot subslot, a microslot, or a time resource unit such as a symbol, an orthogonal frequency division multiplexing (OFDM) symbol, a single carrier frequency division multiplexing access (SC-FDMA) symbol, or other time resource units. The number of symbols included in a time slot is not limited to any number of symbols illustrated in the above embodiments, and may be other numbers of symbols.

[0119] frequency band

[0120] The present disclosure may be applicable to any of licensed frequency bands and unlicensed frequency bands.

[0121] communication

[0122] The present disclosure can be applied to any of the communication between a base station and a terminal (Uu link communication), the communication between terminals (sidelink communication), and the vehicle-to-everything (V2X) communication. The channels in the present disclosure can be replaced with PSCCH, PSSCH, physical sidelink feedback channel (PSFCH), PSBCH, PDCCH, PUCCH, PDSCH, PUSCH, and PBCH.

[0123] In addition, the present disclosure can be applied to any one of a terrestrial network or a network other than a terrestrial network, using a satellite or a high altitude pseudo satellite (HAPS) (NTN: non-terrestrial network). In addition, the present disclosure can be applied to a network with a large cell size, and a terrestrial network with a large delay compared to a symbol length or a time slot length, such as an ultra-wideband transmission network.

[0124] Antenna Port

[0125] An antenna port refers to a logical antenna (antenna group) formed by one or more physical antennas. That is, an antenna port does not necessarily refer to one physical antenna, and sometimes refers to an array antenna formed by multiple antennas, etc. For example, it is not defined how many physical antennas form an antenna port, but the antenna port is defined as the minimum unit through which the terminal is allowed to send a reference signal. The antenna port can also be defined as the minimum unit for multiplication of precoding vector weights.

[0126] Downlink Control Channel Monitoring PDCCH DCI

[0127] Many functions operated by the UE involve monitoring a downlink control channel (eg, PDCCH, see 3GPP TS 38.300 v15.6.0, section 5.2.3) to receive, for example, specific control information or data destined for the UE.

[0128] A non-exhaustive list of these features is given below:

[0129] - Paging message monitoring function,

[0130] -System information acquisition function,

[0131] - signalling monitoring operation for interrupting reception of DRX function,

[0132] - Inactivity monitoring operation for interrupting the reception of DRX functions,

[0133] - Random access response reception for random access functionality,

[0134] -Reordering function of Packet Data Convergence Protocol PDCP layer.

[0135] As described above, PDCCH monitoring is performed by the UE in order to identify and receive information intended for the UE, such as control information and user traffic (eg, DCI on the PDCCH, and user data on the PDSCH indicated by the PDCCH).

[0136] The control information in the downlink (which may be referred to as downlink control information DCI) has the same purpose in 5G NR as DCI in LTE, namely a special set of control information for scheduling downlink data channels (e.g., PDSCH) or uplink data channels (e.g., PUSCH). In 5G NR, many different DCI formats have been defined (see TS38.212v15.6.0 Section 7.3.1).

[0137] The DCI format indicates a predetermined format for forming and transmitting corresponding information. Specifically, DCI formats 0_1 and 1_1 are used for scheduling PUSCH and PDSCH in one cell, respectively.

[0138] The PDCCH monitoring of each of these functions serves a specific purpose and therefore starts and ends. PDCCH monitoring is usually controlled based on at least a timer operated by the UE. The timer has the purpose of controlling PDCCH monitoring, such as limiting the maximum amount of time the UE is to monitor the PDCCH. For example, the UE may not need to monitor the PDCCH indefinitely, but may stop monitoring after a period of time in order to be able to save power.

[0139] As mentioned above, one of the purposes of DCI on PDCCH is the dynamic scheduling of resources in the downlink or uplink or even the sidelink. Specifically, some formats of DCI are provided to carry an indication of the resources (resource allocation, RA) allocated to the data channel of a specific user. Resource allocation may include resource specifications in the frequency domain and / or time domain.

[0140] Physical Resource Block

[0141] In general, the term "physical resource block" (PRB) refers to the smallest allocatable resource unit that can be used for (user) data transmission. In LTE and NR, a PRB has a predetermined number (e.g., 12) of consecutive subcarriers in the frequency domain and a predetermined number of symbols in the time domain (e.g., 14 OFDM symbols in LTE).

[0142] Bandwidth Part - BWP

[0143] The NR system will support a maximum channel bandwidth (e.g., 100 MHz) that is much wider than the 20 MHz bandwidth of LTE. Wideband communications are also supported in LTE via carrier aggregation (CA) of up to 20-MHz component carriers. By defining a wider channel bandwidth in NR, frequency resources can be dynamically allocated via scheduling, which can be more efficient and flexible than LTE's carrier aggregation operation, whose activation / deactivation is based on MAC control elements. Having a single wideband carrier also has advantages in terms of low control overhead, as it only requires a single control signaling (carrier aggregation requires separate control signaling for each aggregated carrier).

[0144] In addition, similar to LTE, NR can also support aggregation of multiple carriers via carrier aggregation or dual connectivity.

[0145] Since UEs do not always require high data rates, the use of wide bandwidths may result in higher idle power consumption from the RF and baseband signal processing perspective. In this regard, the newly developed concept of bandwidth portions of NR provides a means to operate UEs with a bandwidth smaller than the configured channel bandwidth in order to provide an energy efficient solution despite supporting wideband operation. Any low-end terminals that cannot access the entire bandwidth of NR can benefit from this.

[0146] A bandwidth part (BWP) is a subset of the total cell bandwidth of a cell, defined, for example, by the location and number of consecutive physical resource blocks (PRBs). It can be defined separately for uplink and downlink. Furthermore, each bandwidth part can be associated with a specific set of OFDM parameters, such as subcarrier spacing and cyclic prefix. Bandwidth adaptation is achieved, for example, by configuring the UE with a BWP and by telling the UE which of the configured BWPs is currently the active BWP.

[0147] Exemplarily, in 5G NR, a specific BWP is configured only for a UE in the RRC_Connected state. For example, in addition to the initial BWP (e.g., one for UL and one for DL, respectively), the BWP only exists for a UE in the connected state. To support the initial data exchange between the UE and the network, for example, during the process of moving the UE from the RRC_IDLE or RRC_INACTIVE state to the RRC_CONNECTED state, the initial DL BWP and the initial UL BWP are configured in the minimum system information.

[0148] Although a UE may be configured with more than one BWP (e.g., up to 4 BWPs per serving cell, as currently defined for NR), the UE has only one active DL BWP at a time.

[0149] More information on BWP operation can be found in Section 5.15 of 3GPP TS 38.321 (eg, v16.6.0).

[0150] Switching between configured BWPs can be achieved in different ways. The operation of bandwidth parts in the uplink and downlink is defined, for example, in a 5G NR compliant implementation in Section 5.15 of 3GPP 38.321 (e.g., v16.8.0). The BWP can be switched, for example, by downlink control information (DCI) (e.g., using bandwidth part indicators in DCI format 0_1 ​​(UL authorization) and DCI format 1_1 (DL scheduling)), using BWP-inactivity timers, using RRC signaling, and by the MAC entity itself when initiating a random access procedure. For the primary cell (PCell), the initial BWP is the BWP used for initial access and the default BWP is the initial BWP unless another initial BWP is explicitly configured. For the secondary cell (SCell), the initial BWP is always explicitly configured and a default BWP can also be configured. When a default BWP is configured for a serving cell, the expiration of the inactivity timer associated with the cell switches the active BWP to the default BWP.

[0151] Some DCI formats do not contain a BWP ID (such as formats 0_0 and 1_0), while in other DCI formats, the number of bits of the BWP ID is RRC configurable and can be 0, 1, or 2 bits (such as for formats 0_1, 0_2, 1_1, and 1_2).

[0152] Figure 6 A scenario of configuring three different BWPs is shown, BWP1 having a frequency bandwidth of 40 MHz and a subcarrier spacing of 15 kHz, BWP2 having a width of 10 MHz and a subcarrier spacing of 15 kHz, and BWP3 having a width of 20 MHz and a subcarrier spacing of 60 kHz.

[0153] Different BWPs may be configured, for example, using appropriate information elements of the RRC protocol.A carrier bandwidth part is a contiguous set of physical resource blocks selected from a contiguous subset of common resource blocks for a given set of parameters (u) on a given carrier.

[0154] According to an exemplary 5G NR compatible implementation compliant with 3GPP 38.331 (e.g., v16.8.0), different RRCReconfiguration information elements may be used.

[0155] Control Signal

[0156] In the present disclosure, the downlink control signal (information) related to the present disclosure may be a signal (information) transmitted through the PDCCH of the physical layer, or may be a signal (information) transmitted through the MAC control element (CE) or RRC of a higher layer. The downlink control signal may be a predefined signal (information).

[0157] The uplink control signal (information) related to the present disclosure may be a signal (information) transmitted through the PUCCH of the physical layer, or may be a signal (information) transmitted through the MAC CE or RRC of the higher layer. In addition, the uplink control signal may be a predefined signal (information). The uplink control signal may be replaced with uplink control information (UCI), first stage link control information (SCI), or second stage SCI.

[0158] Control Information-Search Space Set

[0159] PDCCH monitoring is done by the UE in order to identify and receive information intended for the UE, such as control information and user traffic (eg, DCI on the PDCCH, and user data on the PDSCH indicated by the PDCCH).

[0160] The control information in the downlink (e.g., may be referred to as downlink control information DCI) has essentially the same purpose in 5GNR as DCI in LTE, i.e., a special set of control information for, for example, scheduling a downlink data channel (e.g., PDSCH) or an uplink data channel (e.g., PUSCH). In an exemplary 5G NR-compliant implementation, a number of different DCI formats have been defined (see TS 38.212, e.g., v17.1.0 Section 7.3.1). An overview is given by the following table.

[0161]

[0162] In 5G NR, PDCCH is sent in a radio resource region called a Control Resource Set (CORESET). In LTE, the concept of a CORESET does not exist explicitly. Instead, PDCCH in LTE uses the full carrier bandwidth in the first 1-3 OFDM symbols (four OFDM symbols for most narrowband cases). In contrast, a CORESET in 5G NR can occur anywhere within a timeslot and anywhere in the frequency range of the carrier, except for CORESETs where the UE is not expected to process outside of its active bandwidth part (BWP).

[0163] Therefore, the UE performs a monitoring operation of the PDCCH, for example, as defined in 3GPP TS 38.213 (e.g., version 17.1.0, sections 10 and 11). As exemplarily defined therein, the UE monitors a PDCCH candidate set, which is defined according to a PDCCH search space set. The search space set may be a common search space set (CSS set) or a UE-specific search space set (USS set).

[0164] As exemplarily defined by 3GPP TS 38.213 section 10.1, the UE monitors PDCCH candidates in one or more of the following CSS and USS sets:

[0165] -Type0-PDCCH CSS set, configured by pdcch-ConfigSIB1 in MIB or by searchSpaceSIB1 in PDCCH-ConfigCommon or by searchSpaceZero in PDCCH-ConfigCommon, for DCI format with CRC scrambled by SI-RNTI on primary cell of MCG

[0166] -Type0A-PDCCH CSS set, configured by searchSpaceOtherSystemInformation in PDCCH-ConfigCommon, for DCI format with CRC scrambled by SI-RNTI on the primary cell of the MCG

[0167] -Type1-PDCCH CSS set, configured by ra-SearchSpace in PDCCH-ConfigCommon, for DCI formats with CRC scrambled by RA-RNTI, MsgB-RNTI or TC-RNTI on the primary cell

[0168] -Type2-PDCCH CSS set, configured by pagingSearchSpace in PDCCH-ConfigCommon, for DCI format with CRC scrambled by P-RNTI on the primary cell of MCG

[0169] - Type3-PDCCH CSS set, configured by SearchSpace in PDCCH-Config with searchSpaceType=common, for DCI formats with CRC scrambled by INT-RNTI, SFI-RNTI, TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, TPC-SR-RNTI or CI-RNTI, and for primary cell only, for formats with CRC scrambled by C-RNTI, MCS-C-RNTI, CS-RNTI or PS-RNTI, and

[0170] -USS set, configured by SearchSpace in PDCCH-Config with searchSpaceType=ue-Specific, for DCI format with CRC scrambled by C-RNTI, MCS-C-RNTI, SP-CSI-RNTI, CS-RNTI, SL-RNTI, SL-CS-RNTI or SL semi-persistent scheduling V-RNTI.

[0171] The search space sets are monitored in one or more CORESETs on the active DLBWP on each activated serving cell configured with PDCCH monitoring using the corresponding search space sets, where monitoring means decoding each PDCCH candidate according to the monitored DCI format.

[0172] Conceptually, Figure 6 An exemplary illustration of the relationship between bandwidth parts, CORESETs, search spaces, search space sets, and PDCCH candidates that a UE can monitor is provided. Figure 6 As is apparent in FIG, one CORESET is shown per BWP, but more than one CORESET is possible. Each CORESET may then have several search spaces for one or more PDCCH candidates of a specific aggregation level (such as AL 2, 4, or 8), which may then be grouped into search space sets, such as a common SS set and a UE-specific SS set.

[0173] Time Domain in 5G NR

[0174] In the time domain, transmissions in 5G NR are organized into frames of 10ms length, each of which is divided into 10 equally sized subframes of 1ms length. A subframe is in turn divided into one or more slots, each consisting of 14 OFDM symbols. The duration of a slot in milliseconds depends on the parameter set. For example, with a 15kHz subcarrier spacing, the NR slot thus has the same structure as an LTE subframe with a normal cyclic prefix. The subframes in 5G NR serve as a parameter set-independent time reference, which is useful, especially in cases where multiple parameter sets are mixed on the same carrier, while the slot is a typical dynamically scheduled unit. This frame structure, on which 3GPP 5G NR communications are based, is described in [3GPP 5G NR Regulations]. Figure 7 It is shown as an example in FIG.

[0175] 5G NR provides multiple slot formats, and the slot format indicates how each symbol within a single slot is used. It defines which symbols within a specific slot are used for uplink and which symbols are used for downlink. In LTE TDD, if a subframe (equivalent to a slot in NR) is configured for DL ​​or UL, all symbols within the subframe should be used as DL or UL. But in NR, each symbol within a slot can be configured differently as DL or UL. There are also flexible symbols that can be configured as DL or UL. In an exemplary 5G NR-compliant implementation, the gNB uses a slot format indicator (SFI) to inform the UE of the slot format to be used (see also TS 38.213v16.7.0 Section 11.1.1). For example, the slot format indicator includes an index value associated with the slot format (e.g., in the form of a table).

[0176] Uplink Control Information and Scheduling Request (SR) in 5G NR

[0177] Although downlink control information is carried by PDCCH (see explanation above), uplink control information (UCI) may be sent on PUCCH or PUSCH depending on the situation. Uplink control information may be channel state information (CSI), ACK / NACK information, and scheduling requests. Not all of these need to be carried by a single PUCCH transmission. For example, CSI may be carried alone, or ACK / NACK may be carried alone, or SR may be carried alone, or CSI and ACK / NACK may be sent together in PUCCH, etc.

[0178] There are a number of different PUCCH formats that can be used to send UCI, and there are currently five PUCCH formats 0-4. Two of the formats (0 and 2) are sometimes called short PUCCH formats because they occupy a maximum of 2 OFDM symbols. In many cases, the last one or two OFDM symbols in a slot are used for PUCCH transmissions, for example, to send hybrid ARQ acknowledgments (ACK / NACK) for downlink data transmissions.

[0179] The three of the formats, 1, 3, and 4, are sometimes referred to as long PUCCH formats because they occupy 4 to 14 OFDM symbols. The reason for having a longer duration than the previous two formats is coverage. If the duration of one or two OFDM symbols does not provide enough receive energy for reliable reception, a longer duration is needed and one of the long PUCCH formats can be used.

[0180] Which PUCCH format to use may be determined, for example, based on how many bits of UCI should be sent and how many symbols (duration of PUCCH) may be used, as exemplarily shown in the following table (see, for example, 3GPP TS 38.211, e.g., v17.1.0, section 6.3.2).

[0181] UCI can be flexibly sent on PUCCH in the time domain and frequency domain using specially assigned radio resources (e.g., PUCCH resource sets). The UE can be configured with up to 4 PUCCH resource sets, where the PUCCH resource set is associated with a PUCCH resource set index. Specifically, a PUCCH resource set contains at least four PUCCH resource configurations, where each resource configuration contains the PUCCH format to be used and all transmission parameters required for the format. The configuration of such resources can be done by, for example, different information elements of the RRC protocol layer (such as the PUCCH-Config information element) (see, for example, 3GPP TS 38.331, e.g., v16.7.0, such as Section 6.3.2).

[0182] As mentioned above, up to four PUCCH resource sets can be configured for a UE, each of which corresponds to a certain range of UCI feedback to be sent. For example, PUCCH resource set 0 can handle up to two bits of UCI payload and therefore only contains PUCCH formats 0 and 1, while the remaining PUCCH resource sets can contain any PUCCH format except formats 0 and 1.

[0183] Current reporting of UCI in PUCCH is defined in 3GPP TS 38.213 (eg, v17.1.0, section 9.2).

[0184] The PUCCH resource may include one or more of the following parameters:

[0185] PUCCH resource index

[0186] The index of the first PRB (Physical Resource Block) before frequency hopping and without frequency hopping

[0187] Index of the first PRB after frequency hopping

[0188] Indication for frequency hopping within a time slot

[0189] PUCCH format configuration

[0190] PUCCH resources are assigned by the gNB so that they are different for each UE. The UE uses the pre-configured PUCCH resources without any coordination from the gNB. By assigning different PUCCH resources to the UEs, it is ensured that the UEs can use these resources simultaneously without causing conflict or interference with each other.

[0191] The transmission of scheduling requests using PUCCH is defined in 3GPP TS 38.213 (e.g., v17.1.0, Section 9.2.4). The UE is configured with specific parameters for determining the scheduling request radio resources to be used for sending a scheduling request (SR). For example, periodicity and offset are defined for SR transmission and are used to determine the time slot and / or frame number of the SR transmission opportunity based on the configured PUCCH resource set.

[0192] In the aspect, the configuration of such SR resources may be accomplished by, for example, different information elements of the RRC protocol layer, such as the SchedulingRequestConfig information element and the SchedulingRequestResourceConfig information element (see, for example, 3GPP TS 38.331 v16.7.0, such as section 6.3.2).

[0193] In short, a scheduling request is basically a flag generated by a user equipment to request uplink resources from the uplink scheduler at the base station. Since the device requesting resources has no PUSCH resources available, a scheduling request is sent on the PUCCH using a pre-configured and periodically recurring PUCCH resource dedicated to the UE. The serving base station can then assign radio resources to the user equipment.

[0194] Unlike LTE, 5G NR supports the configuration of multiple scheduling requests from a single device. A logical channel can be mapped to zero or more scheduling request configurations. This provides the gNB with information not only about the presence of data waiting to be transmitted in the device, but also what type of data is waiting to be transmitted. This can be useful information for the gNB to consider the various traffic types that 5G NR is designed to support. For example, the gNB may want to schedule a user equipment for transmission of latency critical information, but not for non-latency critical information.

[0195] Each device can be assigned a dedicated PUCCH scheduling request resource with a periodicity ranging from every other OFDM symbol to support very latency critical services, up to every 80ms for low overhead. Only one scheduling request can be sent at a given time, i.e., in the case where multiple logical channels have data to send, an exemplary behavior is to trigger a scheduling request corresponding to the highest priority logical channel. It can only be requested in repeated and subsequent resources (up to a configurable limit) until a grant is received from the gNB. An inhibit timer can also be configured, controlling how often a scheduling request can be sent. In the case of multiple scheduling request resources, both configurations are done per scheduling request resource.

[0196] Semi-persistent scheduling (SPS) in downlink and configured grant (CG) in uplink

[0197] In the downlink, the gNB can dynamically allocate resources to the UE via the C-RNTI on the PDCCH (see, e.g., DCI above). Similarly, in the uplink, the gNB can dynamically allocate resources to the UE via the C-RNTI on the PDCCH (see, e.g., DCI above). In addition to the dynamic allocation of downlink and uplink resources, 5G NR also provides scheduling enhancements according to which resource allocation in 5G NR can be implemented based on semi-persistent scheduling (SPS) in the downlink and based on configured grants (CG) in the uplink.

[0198] In the downlink, the semi-persistent scheduling (SPS) function is adopted in 5G NR as a further development of the SPS of the previous communication system for LTE, where it is applicable to both uplink and downlink. In addition, in LTE, the SPS configuration is usually dedicated to a single device. If the device does not need the allocated periodic resources (for example, only sending data for specific events (such as collision warnings)), the SPS resources not used by the UE are wasted.

[0199] According to an example implementation consistent with 5G NR, RRC defines SPS related parameters. The RRC information element SPS-Config is defined in 3GPP 38.331 (e.g., V16.7.0) for configuring downlink semi-persistent transmission. For example, RRC defines the periodicity of the configured downlink assignment, the number of HARQ processes, MCS, etc.

[0200] DL SPS supports different periodicities, for example, common to all subcarrier spacing (SCS) or dependent on the subcarrier spacing. An example of the periodicity currently defined in TS 38.331 (when dependent on SCS) is as follows:

[0201] For 15kHz SCS: {1, 2, 3…, 640} ms

[0202] For 30kHz SCS: 0.5x{1, 2, 3…, 1280}ms

[0203] For 60kHz SCS: 0.25x{1, 2, 3…, 2560}ms

[0204] For 120kHz SCS: 0.125×{1, 2, 3…, 5120}ms

[0205] The UE may be configured with several (e.g. up to 8) active configured downlink assignments for one BWP of the serving cell. When more than one is configured:

[0206] - The network decides which of these configured downlink assignments are active at each time (including all of them); and

[0207] - Each configured downlink assignment is activated individually using a DCI command, and deactivation of a configured downlink assignment is done using a DCI command, which may deactivate a single configured downlink assignment or deactivate multiple configured downlink assignments jointly.

[0208] A PDCCH addressed to the CS-RNTI may signal and activate a configured downlink assignment, whereas a PDCCH addressed to the CS-RNTI may indicate that a downlink assignment may be implicitly reused according to an RRC defined periodicity until deactivated. Retransmissions are explicitly scheduled, e.g., on the PDCCH, when needed.

[0209] SPS is particularly useful for periodic downlink data transmission such as Voice over IP (VoIP) services. The base station configures SPS radio resources, and the UE can use these periodic radio resources without additional scheduling request procedures.

[0210] Uplink data transmission typically requires a resource request by the UE, followed by a packaged scheduling decision and resource allocation by the scheduling side (e.g., base station). Allocation periodicity causes additional delays and signaling. Radio resource allocation delays between the UE and the base station can be avoided by allowing the UE to use radio resources without previously requesting radio resources from the base station. This can be implemented through the so-called configured grant (CG).

[0211] In addition, by using configured grants, multiple devices (UEs) can be allowed to share periodic radio resources (this helps reduce the waste of periodic radio resources compared to LTE SPS). On the other hand, there is also the possibility that the gNB defines periodic radio resources in such a way that the periodic radio resources are not shared or fully shared among multiple UEs. The gNB allocates the configured granted radio resources to one or more UEs, and then these UEs randomly utilize these periodic radio resources when they have to send data (e.g., small data). With CG, the network eliminates the packet transmission delay caused by a specific scheduling request procedure, which must be executed in a certain way before data can be sent. Thereby, the utilization of the allocated periodic radio resources can also be increased.

[0212] Two types of grant-free configuration schemes are supported in 3GPP Release 16 and Release 17, namely Type 1 and Type 2 (see 3GPP 38.300, e.g., v16.8.0: "NR; NR and NG-RAN Overall Description; Stage 2 (Release 16)", Section 10.3). According to this exemplary embodiment of 3GPP TS 38.300, using Type 1 CG, RRC directly provides the configured uplink grant to the UE, e.g., including its periodicity.

[0213] With the permission of Type2 configuration, RRC defines the periodicity of the configured uplink grant, and the PDCCH message addressed to the CS-RNTI of the UE can signal and activate the configured uplink grant, or deactivate it; the PDCCH indication addressed to the CS-RNTI can implicitly reuse the uplink grant according to the periodicity defined by RRC until deactivated. In other words, additional L1 signaling (e.g., PDCCH) is introduced, where the uplink is semi-persistently scheduled by an RRC-based uplink grant, which is activated / deactivated by an activation (deactivation) DCI. RRC provides higher-layer parameters for CG configuration.

[0214] In both cases, according to an exemplary 3GPP implementation, the RRC provides the grant configuration to the UE via a higher layer parameter called ConfiguredGrantConfig (see 3GPP TS 38.331 v16.7.0, section 6.3.2 "Radio resource control information elements").

[0215] The resource configuration for the CG may include, for example, physical resources and / or reference signal (RS) parameters in the time domain and / or frequency domain. The configuration parameters may also include a modulation and coding scheme (MCS) and / or a number of repetitions and / or a cyclic periodicity and / or a transport block size.

[0216] Retransmissions other than repetitions are explicitly allocated via the PDCCH or via configuration of a retransmission timer.

[0217] UL CG supports different periodicities, which may depend on the subcarrier spacing. An example of the periodicity currently defined in TS 38.331 (when depending on the SCS) is as follows:

[0218] For 15kHz SCS: multiples of 1ms up to 640ms, or multiples of 2 symbols (1 / 7ms), or multiples of 7 symbols (0.5ms)

[0219] For 30kHz SCS: multiples of 1 / 2ms up to 640ms, or multiples of 2 symbols (1 / 14ms), or multiples of 7 symbols (0.25ms)

[0220] Extended Reality in XR-Rel.18

[0221] The 3GPP study item deals with Extended Reality (XR) in RAN 1 and RAN 2. The aim is to provide efficient communication for augmented reality (AR), virtual reality (VR), mixed reality (MR) and cloud gaming. Specifically, technologies for XR (Extended Reality) are studied, for example, to adapt to XR service characteristics such as periodicity, multi-stream, jitter, latency, reliability, etc. The considered XR applications require high data rates in downlink (DL) and uplink (UL), as well as relatively strict packet delay budgets (PDB). In addition, some XR applications run on energy-limited devices such as wearable glasses or handheld devices. Therefore, energy efficiency is an important issue.

[0222] XR applications impose various data traffic, including video streaming. Video frames are quite large and have varying sizes. They are characterized as quasi-periodic because video frames arrive over a time window. Furthermore, the periodicity of the time window is non-integer with respect to radio frames / time slots / symbols.

[0223] Packet size: For high quality video streaming, after compression of 8K video, the frame size will be about 1M bits. This results in packets with large size.

[0224] • Varying size: The frame size may vary due to I-frames or P-frames / B-frames.

[0225] • Periodicity: Video streams typically produce 60 / 90 / 120 FPS, which correspond to periodicities of 16.667, 11.111, and 8.333 ms, respectively.

[0226] Jitter: Frame packets will arrive at the gNB / UE within a [-4, 4] ms time window or even larger.

[0227] Latency budget: The latency budget for delivering XR packets can be tight, e.g., 10ms for AR / VR and 15ms for cloud gaming.

[0228] UE power saving enhancements for NR

[0229] User experience is key to the success of 5G / NR, not only in terms of experienced data rate and latency, but importantly in terms of UE power consumption. Therefore, UE power saving enhancements are critical to the success of 5G / NR. In Rel-16, several useful power saving schemes are specified, including power saving signaling / DCI as an enhancement to connected mode DRX (cDRX), additional adaptation to the maximum number of MIMO layers, SCell sleep behavior and cross-slot scheduling as an enhancement to the BWP framework, RRM relaxation as an enhancement to idle / inactive mode power consumption, and UE assistance information.

[0230] In Rel-17, additional enhancements are needed to address outstanding issues in Rel-16, including idle / inactive mode power consumption in NR SA deployments, consideration of eMBB UEs and reduced-capability NR devices, connected mode power consumption with FR2 deployments, etc. A specific example is to study and specify an extension to Rel-16’s DCI-based power saving adaptation during DRX active time for active BWPs, including reduced PDCCH monitoring (at RAN1) when C-DRX is configured.

[0231] Another power saving study item relates to XR specific power saving in RAN 1 and RAN 2. Specifically, power saving techniques are studied for XR (Extended Reality), for example to adapt to XR service characteristics such as periodicity, multiple flows, jitter, latency, reliability, etc. One technique may involve enhancing PDCCH monitoring. A further study item related to XR relates to XR specific capacity improvements in RAN 1 and RAN 2, and involves studying mechanisms to provide more efficient resource allocation and scheduling for XR service characteristics such as periodicity, multiple flows, jitter, latency, reliability, etc. Techniques may be related to SPS and CG enhancements and dynamic scheduling / grant enhancements.

[0232] Energy saving can be implemented for UE, including mechanisms for:

[0233] UE-specific BWP adaptation and use of dormant SCells (using DCI format 0_1 ​​(for UL) and DCI format 1_1 (for DL)),

[0234] UE or UE group specific time domain adaptation via DRX and using DCI format 2_6

[0235] UE group specific CSI-RS / TRS availability indication for idle / inactive UEs via DCI format 2_7 and paging

[0236] DCI-based PDCCH monitoring adaptation through PDCCH skipping and SSSG (search space set group) switching

[0237] Further Improvements

[0238] In the above, the research projects of XR are briefly presented. However, the current 5G NR version cannot effectively support XR traffic, especially video streaming. This is due to the non-integer periodicity of video packets, the varying arrival of packets, and the large and varying packet sizes.

[0239] The UE may use dynamic scheduling for XR traffic. In one example for the uplink, this would first involve transmitting a scheduling request from the UE to the base station to request uplink resources. The base station may then send a dynamic uplink grant to the UE for transmission of uplink XR traffic. In the downlink, the base station may send a downlink resource assignment on a suitable downlink control channel (such as PDCCH), indicating the downlink resources that the base station will use to send downlink XR traffic. Therefore, the use of dynamic scheduling for XR traffic increases the signaling overhead and imposes the requirement that the UE must frequently monitor PDCCH opportunities, resulting in high power consumption at the UE. It also increases network power consumption for PDCCH transmissions.

[0240] Figure 8This solution based on uplink dynamic scheduling is shown. Specifically, Figure 8 An exemplary scenario is shown according to which the UE does not have periodic CG resources available in the uplink, but must request uplink resources using a scheduling request. In the aspect, the UE has a scheduling request configuration with periodic uplink resources for sending scheduling requests, for example, via an uplink control channel (such as PUCCH). Assume that the SR resources have a periodicity of 4ms. Assume a 60fps video stream, so that a video frame is generated every 1 / 60=16,6666ms. The video frames are generated on the UE side over a jitter window of 8ms. Figure 8 It shows how four video frames arrive at different times within corresponding jitter windows.

[0241] As from Figure 8 As is evident in Figure 1, when a video frame arrives within the jitter window, the UE uses the next SR uplink opportunity to send a scheduling request to the base station. Upon receiving the scheduling request, the base station can dynamically grant the UE appropriate uplink resources and send the corresponding uplink grant to the UE (in Figure 8 The UE may then use the granted uplink resources to send the video frames to the base station in a timely manner.

[0242] Unused SR uplink resources are shown with empty boxes, while SR uplink resources used for sending SR are shown with striped boxes. Additional striped boxes show dynamically allocated uplink resources used for sending video frames.

[0243] In order to avoid dynamic scheduling of XR traffic, periodically configured resources (e.g., SPS or CG) can be used to deliver XR data. This is achieved by reserving periodic resources for the transmission of periodic traffic (e.g., XR traffic). In this way, better reliability with reduced signaling overhead can be achieved because there is no need to send DCI indicating the individual scheduled resources. For example, the semi-persistent scheduling (SPS) and / or configured grant (CG) explained above can be used to deliver periodic traffic in DL and UL, respectively. For example, a UE can be configured with one or more SPS and CG configurations. Specifically, since the current 5G NR only supports integer periodicity represented by radio frames / time slots / symbols for SPS and CG configurations, this approach may however require reserving too many resources, which is not resource and power efficient, and will reduce the number of supported devices.

[0244] Fig. 9 An exemplary scenario is shown, which avoids dynamic scheduling, as Figure 8 For ease of explanation and understanding, Figure 8Similar assumptions include an 8ms jitter window and a 4ms periodicity of CG uplink resources. Fig. 9 It is shown that CG uplink resources are over-provisioned to the UE for sending a 60fps video stream in the uplink. The UE knows when the jitter window occurs, at least at its application. Fig. 9 It shows how four video frames arrive at different times within the corresponding jitter windows and are then sent by available CG uplink resources within and outside the jitter windows. Unused CG uplink resources are shown with empty boxes, while CG uplink resources used to send video frames are shown with striped boxes.

[0245] from Fig. 9 It can also be seen in that, exemplarily, it is assumed that there is only one active CG configuration, here with a periodicity of 4 ms. The periodicity of the CG uplink resources (4 ms) and the video frames (16,6666 ms) do not overlap, and result in a relative shift of the appearance of the CG uplink resources with respect to the jitter window within which the video frames are generated.

[0246] To avoid long delays, the UE is provided with sufficient opportunities to send video frames as early as possible. In this example, a configured uplink grant with a periodicity of 4 ms is assumed. Fig. 9 As shown, over-provisioning of CG resources can achieve low latency, but it leads to low resource utilization.

[0247] also, Fig.10 It is shown that the UE is over-provisioned with SPS downlink resources to be able to receive the video stream, in this case also receiving the video stream at 60fps. Fig. 9 Similar assumptions are made, including an 8 ms jitter window and a 4 ms periodicity for the SPS downlink resources. Fig.10 Again, frames 1-4 are shown arriving at the base station. From the UE's perspective, the UE does not necessarily know the location of the jitter window, and does not necessarily know when the video frames are generated at the base station. Instead, the UE periodically monitors all periodic downlink resources according to the SPS configuration shown, and will be able to receive Fig.10 XR video frames 1-4 are shown in . Fig.10 As is also apparent in FIG. 1 , a video frame, although arriving (eg, being generated) at a base station within the jitter window, may be sent by the base station outside the jitter window.

[0248] However, XR and video streaming are only specific exemplary scenarios where the above disadvantages exist. There are other scenarios as well. Therefore, the present invention and its solutions are not only applicable to XR and video streaming.

[0249] Example

[0250] Therefore, the inventors have identified the possibility of providing an improved procedure to allow one or more of the above-mentioned disadvantages to be avoided. The present invention relates to different solutions and variants for such an improved procedure. Therefore, the present disclosure provides techniques for improving the efficiency of resource usage, in particular in scenarios with periodic traffic (such as XR traffic). In particular, techniques are disclosed that allow more efficient support of non-integer periodicity.

[0251] The present disclosure specifically provides a scheduling device, a corresponding method for a scheduling device, a user device, a corresponding method for a user device, a communication system including such a scheduling device and a user device, and an integrated circuit for controlling a process of the scheduling device / user device to execute the corresponding method.

[0252] the term

[0253] In the following, UE, base station and program will be described for the new radio access technology envisioned for 5G mobile communication system, but it can also be used in LTE mobile communication system or future mobile communication system. Different implementations and variants will also be explained. The following disclosure is facilitated by the discussion and discovery as described above, and may be based on at least a part thereof, for example.

[0254] In general, it should be noted that many assumptions have been made herein in order to be able to explain the basic principles of the present disclosure in a clear, concise and understandable manner. However, these assumptions should be understood as examples made herein for illustrative purposes only, which are not necessarily required for the present invention and therefore should not limit the scope of the present disclosure. Those skilled in the art will appreciate that the principles of the following disclosure and the principles set forth in the claims can be applied to different scenarios and in ways not explicitly described herein.

[0255] In addition, some of the terms for procedures, entities, layers, etc. used below are closely related to the terms used in LTE / LTE-A systems or the current 3GPP 5G standardization, even though the specific terms used in the context of new radio access technologies for the next communication system have not yet been fully determined or may eventually change. Therefore, the terms may be changed in the future without affecting the functionality of the embodiments. Therefore, the technicians realize that the embodiments and their scope of protection should not be limited to the specific terms used exemplarily herein due to the lack of updated or finally agreed terms, but should be understood more broadly in terms of the functions and concepts that form the basis of the functions and principles of the present disclosure. Specifically:

[0256] terminal

[0257] In LTE and NR, a terminal or user terminal or user equipment or mobile station or mobile node is referred to as a user equipment (UE). This can be a mobile device or communication device with the functionality of a user equipment, such as a wireless phone, a smart phone, a tablet computer or a USB (Universal Serial Bus) stick. However, the term mobile device is not limited to this, and generally, a relay can also have the functionality of such a mobile device, and a mobile device can also work as a relay. For example, a terminal is a physical entity (physical node) in a communication network. In addition, a communication device can be a communication device of any machine type, such as an Internet of Things device, etc. A node can 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 other functional entities of the same or another node or network. A node may have one or more interfaces that connect the node to a communication facility or medium through which the node can communicate. Similarly, a network entity may have a logical interface that attaches a functional entity to a communication facility or medium, through which the network entity can communicate with other functional entities or communication nodes.

[0258] Base Station

[0259] In the present disclosure, for example, a base station may be a transmission reception point (TRP), a cluster head, an access point, a remote radio head (RRH), an eNodeB (eNB), a gNodeB (gNB), a base station (BS), a base transceiver station (BTS), a basic unit, or a gateway. In addition, in sidelink communication, a terminal may be used to replace the base station. A base station may be a relay device that relays communications between a higher node and a terminal. A base station may also be a roadside unit. A base station may be a scheduling node or a network node, for example, forming part of a network for providing services to a terminal. Specifically, a base station may provide wireless access to a terminal. Communications between a terminal and a base station are generally standardized and may be defined by different layers, such as PHY, MAC, RRC, and the like. In LTE and NR, the wireless interface protocol stack includes a physical layer, a medium access layer (MAC), and higher layers. In the control plane, a higher layer protocol radio resource control protocol is provided. Via RRC, the base station may control the configuration of the terminal, and the terminal may communicate with the base station to perform control tasks, such as connection and bearer establishment, modification, etc., measurements, and other functions. The term used in LTE is eNB (or eNodeB), while the term currently used in 5G NR is gNB. The term "base station" or "radio base station" here refers to a physical entity in a communication network. Like a mobile station, a base station can 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 other functional entities of the same or another node or network. The physical entity performs some control tasks regarding the communication device, including one or more of scheduling and configuration. Note that the base station function and the communication device function can also be integrated in a single device. For example, a mobile terminal can also implement the functions of a base station for other terminals. The term used in LTE is eNB (or eNodeB), while the term currently used in 5GNR is gNB. Specifically, a base station can also be a gNB in ​​a non-terrestrial network (NTN) NR system.

[0260] As described above, the present disclosure provides a base station and a user equipment. The present disclosure also provides a system including a scheduled and a scheduling device, and a corresponding method and program. An example of such a communication system is Fig.11 The communication system 1100 may be a wireless communication system according to the technical specifications of 5G, specifically an NR communication system. However, the present disclosure is not limited to 3GPP NR terrestrial networks (TNs) and may also be applied to NTN or other wireless or cellular systems.

[0261] Fig.11A general, simplified and exemplary block diagram of a communication device 1110 (here exemplarily assumed to be a UE) and a scheduling device 1160 (here exemplarily assumed to be located in a base station, such as an LTE eNB (alternatively referred to as ng-eNB) or a gNB in ​​5G NR) is shown. However, in general, in the case of a sidelink connection between two terminals, the scheduling device may also be a terminal. In addition, in particular with regard to the use cases of URLLC, eMBB and mMTC, the communication device 1110 may also be a sensor device, a wearable device, or a connected vehicle, or a controller of an automated machine in a factory. In addition, the communication device 1110 may act as a relay between a base station and another communication device (e.g., the present disclosure is not limited to a communication "terminal" or a user "terminal"). As Fig.11 As shown, the communication device 1110 and the scheduling device 1160 (eNB / gNB) can communicate with each other through the (wireless) physical channel 1150 using their transceivers 1120 (UE side) and 1170 (base station side), respectively. The scheduling device 1160 and the terminal 1110 together form a communication system 1100. The communication system 1100 may also include such as Figure 1 Other entities shown. The communication between the communication device (UE) and the scheduling device (base station) is generally standardized and may be defined by different layers, such as PHY, MAC, RRC, etc. (see the background discussion above).

[0262] like Fig.11As shown in (left hand side), the communication device may include a transceiver and a circuit (or processing circuit), and the scheduling device may include a transceiver and a (processing) circuit. The transceiver may include and / or be used as a receiver and a transmitter. In the present disclosure, in other words, the term "transceiver" is used to allow a communication device or a base station to send and / or receive radio signals through a wireless channel, respectively. Hardware and software components. Therefore, a transceiver corresponds to a receiver, a transmitter, or a combination of a receiver and a transmitter. Generally, it is assumed that the base station and the communication device are capable of sending and receiving radio signals. However, in particular with respect to some applications of eMBB, mMTC, and URLLC (smart home, smart city, industrial automation, etc.), it is conceivable that a device (such as a sensor) only receives a signal. In addition, the term "circuit" includes a processing circuit formed by one or more processors or processing units, etc. The transmitter may be responsible for executing the transmission process and other processes related thereto. The receiver may be responsible for executing the reception process and other processes related thereto, such as monitoring a channel. The circuit or processing circuit may be one or more hardware, such as one or more processors or any LSI. There may be an input / output point (or node) between the transceiver and the processing circuit, through which the processing circuit can control the transceiver, i.e., control the receiver and / or transmitter and exchange receive / transmit data. As a transceiver and transmitter, the receiver may include an RF (radio frequency) front end, which includes one or more antennas, amplifiers, RF modulators / demodulators, etc. The processing circuit may implement control tasks, such as controlling the transceiver to send user data and control data provided by the processing circuit and / or receiving user data and control data further processed by the processing circuit. The processing circuit may also be responsible for performing other processing, such as determining, deciding, calculating, measuring, etc.

[0263] According to an exemplary embodiment, there is provided, for example, Fig.11 A communication device 1110 (e.g., UE) is shown. The communication device 1110 includes a transceiver 1120 and a circuit (or processing circuit) 1130. The circuit 1130 (i) obtains (e.g., by extracting and / or parsing) a configuration change indication from control signaling, and (ii) changes the configuration of a transmission opportunity by applying the indicated change. The transceiver (i) receives the control signaling, and (ii) receives or sends one (or more) transmissions using one (or more) transmission opportunities of the changed configuration.

[0264] Note that the circuit 1130 may implement more functions than the above-mentioned acquisition and change, because it may, for example, further control the transceiver 1120 to receive control signaling and / or receive or send data. Therefore, the circuit 1130 is exemplarily considered to include a transmission opportunity circuit 1135, which is configured to perform the acquisition and change. This configuration can be provided by hardware adaptation and / or by software.

[0265] Fig.12 1 shows an exemplary functional structure of the transmission opportunity circuit 1135. Specifically, the transmission opportunity circuit 1135 may include a configuration change indication obtaining circuit 1210, which may obtain a configuration change indication from control signaling; and a configuration change circuit 1220, which may apply the indicated configuration change to the transmission opportunity (or change the configuration of the transmission opportunity according to the configuration change indication). Note that the transmission opportunity circuit 1135 may also implement more functions, because it may also be responsible for determining a new transmission opportunity (rather than just changing an already configured transmission opportunity), for example.

[0266] Corresponding to the above communication device, a communication method performed by the communication device is provided. Fig.14 As shown, the method includes the following steps: (i) receiving S1440 control signaling; (ii) obtaining S1450 a configuration change indication from the control signaling; (iii) changing S1460 the configuration of a transmission opportunity by applying the indicated change; and (iv) receiving or sending S1470 one (or more) transmissions using one (or more) transmission opportunities of the changed configuration.

[0267] Also like Fig.11 As shown on the right-hand side, according to another exemplary embodiment, a scheduling device 1160 is provided. The scheduling device 1160 includes a transceiver 1170 and (or a processing circuit) a circuit 1180. The circuit 1180 determines a change in the configuration of a transmission opportunity of a resource configuration and generates a control signaling including an indication of the change. The transceiver 1170 (i) sends the control signaling, and (ii) uses one (or more) of the transmission opportunities of the changed configuration to receive or send one (or more) transmissions. Note that the circuit 1180 can implement more functions than the above-mentioned determination and generation, because it can, for example, further control the transceiver 1170 to send control signaling and / or receive or send data. Therefore, the circuit 1180 is exemplarily considered to include a transmission opportunity circuit 1185, which is configured to perform the determination and generation. This configuration can be provided by hardware adaptation and / or by software.

[0268] Fig.13 An exemplary functional structure of the transmission opportunity circuit 1185 is shown in FIG. Specifically, the transmission opportunity circuit 1185 may include: a configuration change determination circuit 1310, which may determine a configuration change; and a control signaling generation circuit 1330, which may generate a control signaling indicating the configuration change (e.g., by including a configuration change indication). Note that the scheduling circuit 1135 may also implement more functions, because it may, for example, also be responsible for determining new transmission opportunities (rather than just determining whether and / or how to change an already configured transmission opportunity).

[0269] In addition, corresponding to the above-mentioned scheduling device, a communication method performed by the scheduling device is provided. Fig.14 As shown, the method includes the step of (i) determining S1400 a change in the configuration of a transmission opportunity of a resource configuration; (ii) generating S1410 a control signaling including an indication of the change; (iii) sending the control signaling step S1420; and (iv) receiving or sending S1430 one (or more) transmissions using one (or more) transmission opportunities of the changed configuration.

[0270] In addition, it should be noted that since the present disclosure relates to resource usage and scheduling, both entities (the scheduled device (typically a communication device / transceiver device) and the scheduling device (typically a network node)) are involved. Therefore, in the further description, unless explicitly stated or the context indicates otherwise, the details and embodiments apply to each of the communication device, the scheduling device (or scheduling node) and the method (and may be implemented by them). Specifically, any steps / operations described below may be performed or controlled by circuit 1130 (on the UE side) and / or circuit 1180 (on the base station side). In addition, any receiving and transmitting steps may be performed by transceiver 1120 (on the UE side) and / or transceiver circuit 1170 (on the base station side) (e.g., by being controlled by the corresponding circuits).

[0271] Transfer Opportunities

[0272] First, note that the term "transmission opportunity" is not limited to a specific direction of transmission (uplink / downlink / sidelink). In other words, a transmission opportunity can be an opportunity (for a given device) to receive or send data (e.g., control signaling typically used for SR and / or payload typically used for CG / SPS). Therefore, the UE and the scheduling device can receive or send data in steps S1470 and S1430, respectively (if they are communicating with each other, one of them is receiving and one of them is sending). It is worth noting that in the case of SR, the transmission opportunity is used to request uplink resources. In other words, the transmission opportunity for the transmission of periodic traffic is used to transmit control information / signaling for the periodic traffic, and not for transmitting data for the periodic traffic.

[0273] Furthermore, it is noted that a transmission opportunity generally refers to a time-frequency resource reserved for transmission / reception of a corresponding device and that the corresponding device can use (or more precisely, should monitor in the case of reception). Generally, a transmission opportunity corresponds to a resource of a resource configuration.

[0274] Furthermore, as indicated by the word "opportunity", a transmission opportunity may not actually be used for transmission. Specifically, typically only some (e.g., one or more) transmission opportunities are used, but not necessarily all transmission opportunities are used. For example, as explained above with respect to XR traffic, when a certain transmission opportunity occurs, the next transmission may not be ready, and a later transmission opportunity, preferably in the same jitter window, may be used. If the transmission opportunity is an opportunity to receive a transmission, the transmission opportunity corresponds to a time-frequency resource in which the transmission may be received and thus monitored.

[0275] Resource Configuration

[0276] Generally, the term "resource configuration" refers to a plurality of time-frequency resources with which the communication device 1110 is configured. If the resources of the resource configuration are known, the UE may be considered to be configured with the resource configuration (for example, the parameters of the mode on which the resources of the resource configuration are based may have been notified to the UE). Generally, the UE may be configured with the resource configuration via control signaling received from a scheduling device. This may be the same control signaling or another control signaling that includes a configuration change indication. Such control signaling will include an indication of the resources (for example, time-frequency resources) of the resource configuration. Specifically, the control signaling including the configuration change indication may be RRC signaling, which includes an indication of the resource configuration and / or specifically includes an indication of the resources indicating the resource configuration. For example, if the resource configuration is a CG configuration, an SPS configuration, or an SR configuration, the control signaling including the configuration change indication may be an RRC that configures the CG configuration, the SPS configuration, or the SR configuration, respectively. This is particularly applicable to the case where the configuration change indication is an indication of the effective time (further explained below), in which case the resources and effective time of the transmission opportunity of the resource configuration will be configured together. In other words, the validity time can be configured by RRC as part of the SPS / CG / CG configuration (the validity time applies to the SPS / CG / CG configuration).

[0277] The resources of a resource configuration (i.e., the resources specified by the resource configuration) may be given according to a certain pattern that may repeat itself in the time domain. For example, the resources may be evenly spaced in the time domain: every two directly consecutive resources (in the time domain) may be separated by the same time distance, so that the resources may be given / specified / indicated by a time reference point, a common length / duration for all resources, and the same time distance (some of these three parameters may be predefined / predetermined / preconfigured, so that explicit signaling may not be required when configuring the UE with the resource configuration). For example, the resource configuration may be a CG configuration, an SPS configuration, or an SR configuration. In other words, the resources of the resource configuration may be resources of a CG configuration, an SPS configuration, or an SR configuration.

[0278] Note that the resources of a resource configuration may correspond to corresponding transmission opportunities. These are also referred to herein as transmission opportunities of the resource configuration. If the resources of a resource configuration correspond to transmission opportunities, the resources are allocated to the UE and (i) the UE may use them to send data or control information (e.g., a scheduling request as in the case of an SR configuration), or (ii) the UE may be assumed to monitor these resources because it may receive transmissions in these resources.

[0279] However, (all, some or none) of the resources specified / defined by the resource configuration may not correspond to the corresponding transmission opportunity. For example, the resource configuration may be deactivated so that no resources correspond to the transmission opportunity. When the resource configuration or the corresponding transmission opportunity is deactivated, the UE mainly remains configured with the resource configuration, which may allow the corresponding transmission opportunity to be quickly activated.

[0280] Control signaling

[0281] Typically, the control signaling including the configuration change indication may be downlink control signaling (DCI), a radio resource control (RRC) message, or some different control signaling.

[0282] Configuration changes

[0283] It should be noted that the term "configuration change" refers to a change in the configuration of a transmission opportunity of a resource configuration (i.e. to a change of said transmission opportunity). Thus, a configuration change comprises a change of a resource configuration, i.e. a change of a resource of a resource configuration, but is not limited thereto. As mentioned above, a resource of a resource configuration does not necessarily correspond to a transmission opportunity, for example if said resource and / or if the entire resource configuration is deactivated. Thus, a change in the configuration of a transmission opportunity may also occur when a resource / transmission opportunity is activated or deactivated. In general, a configuration change may therefore be a change of:

[0284] (i) configuring resources (e.g., by changing resource parameters), and / or

[0285] (ii) Activation / deactivation of resource configuration.

[0286] Configuration change indication

[0287] The term "configuration change indication" refers to an indication indicating a change in the configuration of transmission opportunities of a resource configuration, i.e., to an indication indicating a change in transmission opportunities. Thus, a "configuration of transmission opportunities" refers to a plurality of transmission opportunities, which may be changed by: (a) changing the resources of the transmission opportunities and / or (b) removing / adding transmission opportunities by activating / deactivating resources of the resource configuration (and thus activating / deactivating transmission opportunities corresponding to the activated / deactivated resources, thereby adding / removing transmission opportunities from a plurality of transmission opportunities). In general, a configuration change indication may thus be an indication of:

[0288] (i) a change in the configuration of said resources,

[0289] (ii) activation / deactivation of said resource configuration, and / or

[0290] (iii) an indication of the period of validity.

[0291] In other words, with respect to (ii) and (iii), the configuration change indication may therefore also be an indication of a change in the activation state of the resource configuration.

[0292] With respect to the case where the configuration change indication is an indication of a validity time (point (iii) above), it should be noted that such an indication is also an indication of activation / deactivation of a resource configuration (point (ii) above). However, point (ii) above refers to an indication of activation or deactivation of a resource configuration (e.g., directly in response to a configuration change indication). As discussed further below, the change indicated by the validity time is a change (i.e., deactivation) of a transmission opportunity following (i.e., any / each) activation of a transmission opportunity once the validity time (since the corresponding activation) has passed. In other words, the indication of the validity time indicates that the transmission opportunity will be changed (i.e., deactivated, become invalid) once the validity time has passed since the activation. In other words, in the case of activation, the indication of the validity time changes the transmission opportunity relative to the transmission opportunity that the UE would have had if the validity time was not indicated.

[0293] Furthermore, it should be noted that a configuration change indication may not be (but may be) an indication of a change of the validity time, e.g. from an already set value to another value indicated by the configuration change indication: the configuration change indication may also be an initial setting of the validity time.

[0294] Therefore, secondly, first note that in the above cases (i) and (iii), the configuration change indication itself (or alone) does not usually change the transmission opportunities of the UE. More specifically, in these cases, the transmission opportunities usually change only when or once the resource configuration is active / enabled. Therefore, only together with the activation of the resource configuration, the change of the validity time and / or resources will cause the change of the transmission opportunities.

[0295] Thus, a "changed configured transmission opportunity" is a transmission opportunity corresponding to: (i) resources that are changed according to a configuration change indication (if the configuration change indication indicates a change in resources, otherwise the resources remain unchanged), (ii) resources that are within the validity time since the last activation (if the validity time has been configured by a configuration change indication or other signaling).

[0296] Configuration Change Indicator - Resource Change

[0297] As described above, generally, the configuration change indication may be an indication of a change in a resource of a resource configuration: specifically, the configuration change indication may be an indication of:

[0298] (i) the values ​​of the resource configuration parameters,

[0299] (ii) the time offset of the resource to be applied to the resource configuration,

[0300] (iii) the frequency offset to be applied to the resource of the resource configuration,

[0301] (iv) periodic changes in configured resources, and / or

[0302] (v) Modulation and Coding Scheme (MCS) index (eg, to be used for transmissions using the resources and transmission opportunities of the resource configuration).

[0303] The UE (e.g., its circuit 1130) will then obtain the indication from the control signaling and individually change the transmission opportunities by changing the configured resources in the following manner:

[0304] - Updates the configured parameters to the indicated values,

[0305] -apply a time offset to the configured resources,

[0306] -apply frequency offset to configured resources,

[0307] - the periodicity with which configured resources are updated, and / or

[0308] - Update the configured MCS index to the indicated MCS index.

[0309] More specifically, a time offset is applied to the resources of the resource configuration, for example by adding a (positive or negative) offset to the time of each resource of the resource configuration. In addition, a frequency offset will be applied to the resources of the resource configuration, for example by adding a (positive or negative) offset to the frequency of each resource of the resource configuration. For example, a positive / negative time allocation offset (e.g., time slot / mini-time slot / symbol) and / or a positive / negative frequency offset (e.g., RE) can be indicated by control signaling and applied by the UE to an existing allocation offset of the SPS / CG / SR configuration. In other words, a positive / negative frequency offset (e.g., RE) can be applied to an existing frequency domain allocation of the SPS / CG / SR configuration. The new MCS index indicated by the configuration change indication can, for example, replace an existing (i.e., current) MCS of the SPS / CG configuration.

[0310] Indication of periodic changes

[0311] Typically, resource configurations may have a certain periodicity. More specifically, as in the case of, for example, a CG / SPS / SR configuration, the resources of the resource configuration may have a certain periodicity. For example, every two consecutive (e.g., directly consecutive) resources of the resource configuration may be separated (in the time domain) by the same time distance. Such a time distance may, for example, be the time between the start times of two consecutive resources, the time between the end of the first resource time and the start of the second resource (the first and second resources in chronological order), or the time between two end times of a resource. In other words, resources may be equally or evenly spaced in the time domain. Therefore, a resource may be specified in the time domain by a point in time and the time distance (e.g., completely). More specifically, in general, the time instance of a resource (and / or the indicated transmission time) may be given by: t+n*x; n={0, 1, 2, ..}, where "*" indicates multiplication, t is an offset value in the time domain, the start of changing the resource, e.g. from the start of a frame, x is the "same time distance" by which the resources are separated, and n is a label of the resource ordered in time (i.e., the (n+1)th resource time would be t+n*x). Thus, the value of t and / or x may be indicated by control signaling configuring the resource configuration. The units of t and / or x (time slots, ms, frames, etc.) may also be indicated or be predetermined and / or predefined.

[0312] Thus, the indication of a change in the periodicity or frequency of occurrence of a resource configuration may be an indication of a change in time between two resources of the resource configuration. For example, the indication may be an indication of a new value of the variable x, which will then be used, for example, to determine the resources up to a certain time. The indication may also be an indication of the number of transmissions in / per a certain time interval (e.g., the number of transmissions per second).

[0313] Changing of transmission opportunity (S1470) and generation of signaling (S1410)

[0314] Regarding the determination of the transmission opportunity by the scheduling device in step S1400 and the change of the transmission opportunity by the UE according to the configuration change indication in step S1460, it is noted that since the UE and the scheduling device form a communication system, the two steps should generally produce the same result (i.e., the same transmission opportunity). In other words, the two devices should know the same transmission opportunity.

[0315] However, the UE's determination may differ from the scheduling device's determination in several respects. First, the scheduling device's determination may be the step where the opportunity is set (e.g. where it is determined that the transmission opportunity is to be changed and / or how it is changed), whereas the UE typically only infers the transmission opportunity determined / changed by the scheduling device. Second, the scheduling device's determination may therefore take into account other / additional parameters, such as available resources, quality of service, requests from the UE, received channel state information, traffic load, battery status of the UE, etc. Some (but typically not all) of these parameters may be known to the UE, or may even be indicated via a transmission from the UE to the scheduling device.

[0316] Specifically, the scheduling device may attempt to optimize all of these parameters and find the most appropriate transmission opportunity based on all of these parameters. Thus, typically, the scheduling device is the device that decides on the transmission opportunities in its determination, whereas the UE typically only determines / infers the transmission opportunities set by the base station. The changes applied by the UE are based on the control signaling obtained by the UE from the control signaling in step S1450.

[0317] Since the result of the UE's change S1460 should produce the same result as the determination of the scheduling device, the method according to the present disclosure is generally applicable to the UE and the base station side (network node, scheduling device). However, the specific configuration change indication disclosed herein involves the base station in a different way: the base station must generate (step S1410) control signaling so that the UE can / will determine the expected / correct transmission opportunity based on the generated control signaling. Therefore, the generated control signaling should allow the UE to determine the correct transmission opportunity. In other words, the UE's determination of the transmission opportunity directly corresponds to the generation of the control signaling by the scheduling device.

[0318] Configuration Group

[0319] Typically, a UE may be configured with one or more configuration groups. As described above, a UE may be configured with several SPS / CG / SR configurations (e.g., via RRC). More specifically, the term "configuration group" therefore refers to a plurality of resource configurations that are grouped or linked together. In other words, each configuration group includes a plurality of resource configurations. The resource configurations of a particular configuration may generally be of the same type, for example, all CG configurations, all SPS configurations, or all SR configurations.

[0320] The configuration group may be configured, for example, via RRC, DCI, and / or other control signaling. Such control signaling for configuring a UE with one or more configuration groups is referred to herein as "configuration group control signaling". Typically, the configuration group control signaling includes an indication indicating which resource configurations are in the configuration group of the resource configuration. Therefore, the UE may obtain such indication from the configuration group control signaling. Typically, the configuration group control signaling may be control signaling different from (i) control signaling for configuring resource configurations and / or (ii) control signaling for indicating configuration changes. However, the present invention is not limited to any specific scenario. Any two or more of these control signalings may be part of the same control signaling.

[0321] The configuration group control signaling may also indicate that a change in the configuration of a transmission opportunity of one (any one) of the resource configurations of the configuration group will (also) apply to the transmission opportunities of other resource configurations of the configuration group (e.g., including an indication indicating the foregoing). In other words, the configuration group control signaling may indicate that any change to a member of the configuration group applies to each member of the configuration group.

[0322] For example, the UE may receive control signaling indicating (i) which (already configured) resource configurations form a configuration group, and / or (ii) specific resource configurations form a configuration group (i.e., a specified configuration group). There may also be control signaling to add resource configurations to a configuration group and / or remove resource configurations from a configuration group. By assigning several resource configurations (e.g., SPS / CG / SR configurations) to the same configuration group, these several resource configurations may be linked to each other.

[0323] Configuration groups allow the same configuration changes to be applied to multiple resource configurations at once (e.g., all configurations in the same group) without the need to separately indicate configuration changes for each resource configuration in the configuration group. In other words, when a configuration parameter of one of the SPS / CG / SR changes, the change is also applied to the other linked SPS / CG / SR configurations (i.e., the change is applied to each resource configuration in the same configuration group). For example, a DCI can be sent to reconfigure several SPS / CG / SR configurations at the same time. This can be faster and / or have less latency than other signaling types. This DCI (also referred to herein as "group-based DCI") can, for example, include indications of: (i) the value of a configured parameter, (ii) a positive or negative time allocation offset (e.g., time slot / mini-slot / symbol), (iii) a positive or negative frequency offset, (iv) a change in the periodicity of the configured resources, and / or (v) a new MCS index. These new parameters based on the indications of the SPS / CG / SR group can be applied to the SPS / CG / SR configuration group. As described below with respect to Fig.15As further explained, the time offset can, for example, be used to compensate for drift between CG resources and jitter windows for non-integer periodic traffic, and has the benefit of reducing signaling overhead compared to a separate DCI for each resource configuration or configuration group.

[0324] Typically, the control signaling indicating a configuration change may also indicate that the configuration change indication applies to each resource configuration in a configuration group of resource configurations. In other words, the control signaling may indicate whether it is group signaling, for example, it may indicate whether the DCI is a group DCI that applies to each resource configuration in a configuration group (of the resource configuration explicitly indicated by the DCI). The control signaling indicating the configuration may also typically include an indication of the group ID of the configuration group to which the configuration change applies. This may be the case in particular if the resource configuration may be in multiple (i.e., more than one) configuration groups.

[0325] More specifically, if the configuration change indication indicates a change of the transmission opportunities of a specific resource configuration, the change may also be applied (by the UE in change S1460) to the configuration of the transmission opportunities of other resource configurations of the group. Here, "other resource configurations" refer to resource configurations in the configuration group other than the specific resource configuration. In other words, the indicated change will be applied to each configuration of the transmission opportunities in the group of the specific resource configuration (explicitly indicated). Therefore, the transmission opportunities of each resource configuration in the configuration group are changed according to the configuration change indication.

[0326] Furthermore, typically, a resource configuration may also be part of more than one configuration group (i.e., included in more than one configuration group). In this case, the configuration change indication may include an indication of one or more of the configuration groups to which the configuration change indication applies. The UE then applies the change configuration to each resource configuration in at least one of the indicated configuration groups.

[0327] Fig.15 An example of reducing overhead when using configuration groups and group-based DCI is shown: The UE is configured with three different CG configurations, CG1, CG2 and CG3, for example for a 60fps video stream (corresponding to a periodicity of 50 / 3ms=16.66667ms). The periodicity of each CG configuration is 16ms. Fig.15 The row (a) of shows the arrival of frames on the UE side over a jitter window of 8 ms. Due to the non-integer periodicity of the video stream (the average periodicity is 1 / 60fps≈16.6666ms), the video stream and the CG resource have different periodicities, and there is a relative drift between the CG resource and the jitter window. In the absence of a configuration group, in order to compensate for this drift, the CG configuration must be reconfigured by sending a separate DCI, such as Fig.15In contrast, using configuration groups, group-based DCI can be used to simultaneously reconfigure three CG configurations, such as Fig.15 Here, the sent DCI is used to adjust the time offset of the CG configuration.

[0328] Configuration change indication - activation / deactivation of resource configuration

[0329] As described above, the configuration change indication may generally be (or include) an indication for activating or deactivating a transmission opportunity of a resource configuration. More specifically, if the configuration change indication is an indication for activating a transmission opportunity of a resource configuration, the UE may activate the transmission opportunity of the resource configuration in the configuration group of the resource configuration; and (ii) if the indication indicating the change is an indication for deactivating a transmission opportunity of a resource configuration, the UE may deactivate the transmission opportunity of the resource configuration in the configuration group of the resource configuration. Here, "deactivation" or "release" means that the corresponding transmission opportunity may no longer be used by the UE (or may no longer be monitored by the UE in the case of, for example, SPS). Therefore, the transmission opportunity is disabled and stops being a transmission opportunity (i.e., they become invalid). Correspondingly, "activation" means that the resources of the resource configuration become valid and the UE can now use them (or should now monitor them in the case of, for example, SPS). Therefore, the enabled resources of the resource configuration now correspond to the transmission opportunity. It should also be noted that there may be a predetermined / preconfigured or indicated duration between receiving the signaling indicating activation / deactivation and the time when the activation / deactivation is applied.

[0330] Note that the indication of activating or deactivating a transmission opportunity may also be used in general without a configuration group. However, as described above, it may be particularly advantageous to group together, for example, several SPS / CG / SR configurations and send a group DCI to activate / release the SPS / CG / SR configuration group (i.e., each of them).

[0331] Regarding the case where a configuration is included in more than one configuration group, as described above, the configuration change indication may indicate to the UE the configuration group to which it applies. Then, if the configuration change indication is an indication to activate transmission opportunities, the UE may (i) activate transmission opportunities for resource configurations in the indicated (one or more) configuration groups, and (ii) not activate transmission opportunities for resource configurations not included in the indicated (one or more) configuration groups. In other words, the UE may only activate resource configurations in the indicated (one or more) configuration groups. Accordingly, if in this case, the configuration change indication is an indication to deactivate transmission opportunities, the UE may (i) deactivate transmission opportunities for resource configurations in the indicated (one or more) configuration groups, and (ii) not deactivate transmission opportunities for resource configurations not included in the indicated (one or more) configuration groups.

[0332] Automatic deactivation

[0333] Typically, a UE may be configured to have a resource configuration of at most one resource configuration active at a time (i.e., at any given time, e.g., until the configuration is revoked). When such a UE then receives an indication to activate a particular resource configuration, it may activate the particular resource configuration and deactivate other resource configurations. For example, a DCI may activate one of the SPS / CG / SR configurations and release the remaining SPS / CG / SR configurations. However, the present invention is not limited to this, since typically a UE may also be configured to have only a certain number (which may be 1, but may also be an integer greater than 1) of resource configurations active at a given time. Then, if the UE receives an indication to activate one or more resource configurations, the UE will activate one or more of these indicated resource configurations and deactivate the resource configurations so as not to exceed the maximum number of configured active resource configurations. The deactivated resource configuration may, for example, be the resource configuration that has been activated for the longest time among the currently active resource configurations.

[0334] In addition, if the UE is configured with a configuration group, the UE may also be configured to make at most one resource configuration in its configured configuration group active at a given time. Alternatively, if the UE has a configured configuration group, the UE may be configured to make at most one resource configuration in a specific subset of its configured configuration group active at a given time. If the UE receives an indication to activate a transmission opportunity of a resource configuration in this case (i.e., the configuration change indication is an indication to activate the transmission opportunity of the resource configuration), the UE may deactivate the transmission opportunities of the resource configuration that are not in the configuration group of the resource configuration. The UE also activates the transmission opportunities of the resource configuration in the configuration group of the indicated resource configuration (if they are not already active).

[0335] Regarding the case where the resource configuration may be part of more than one configuration group, the configuration change indication may indicate to the UE the configuration group to which it applies. Then, if the configuration change indication is an activation indication, the UE may:

[0336] (i) activating a transmission opportunity for a resource configuration in the indicated configuration group, and

[0337] (ii) Deactivate transmission opportunities of resource configurations that are not of the indicated configuration group.

[0338] In other words, if a resource configuration may be part of more than one group, only the resource configuration of the (eg, a single, one) group may be activated, and the remaining resource configurations that are not in the group may be released.

[0339] In addition, if the UE is configured with configuration groups, the UE may also be configured to only have a certain number (which may be 1, but may also be an integer greater than 1) of configuration groups active at a given time. Then, if the UE receives an indication to activate one or more configuration groups, the UE will (i) activate the resource configurations of the indicated one or more configuration groups (if they are not already active), and (ii) deactivate the resource configurations of the configuration groups so that the maximum number of configurations of the active configuration groups is not exceeded. The deactivated resource configurations may, for example, be the configuration group that has been activated for the longest time in the currently active configuration group. If a certain configuration group is deactivated, then generally only the resource configurations in the certain configuration groups that are not in any other remaining active configuration groups are deactivated.

[0340] Reference now Fig.16 The advantages of automatic deactivation are shown. Fig.16 In the example of , it is assumed that the UE is configured with 4 CG configurations for 60fps video stream, denoted as CG1 to CG4. The CG configurations are grouped as follows:

[0341] CG group 1: {CG1, CG2, CG3},

[0342] CG group 2: {CG2, CG3, CG4},

[0343] CG Group 3: {CG3, CG4, CG1}, and

[0344] CG group 4: {CG4, CG1, CG2}.

[0345] In other words, the UE is configured with four of these configuration groups, denoted CG Group 1 to CG Group 4. Assume that at the start of this example, the only active group is CG Group 1.

[0346] Fig.16 The row (a) of shows the frame arrival on the jitter window at the UE side. Fig.16 As can be seen in rows (b) and (c) of , starting from frame 2, resource configuration CG1 starts to drift out of the jitter window. In addition, resource configuration CG4 drifts closer to the jitter window. Therefore, the base station sends signaling to activate resource configuration CG4 and deactivate resource configuration CG1.

[0347] Fig.16 Row (b) shows the traditional DCI transmission for activating / releasing CG configuration without using automatic deactivation and grouping. It can be seen that two DCIs are sent, one for activating CG4 (ie, DCI1) and one for releasing CG1 (ie, DCI2).

[0348] exist Fig.16In row (c) of , it is further assumed that the UE is configured to have only (or at most) one of the four configuration groups active at a given time. In other words, the UE is also configured to have a single active CG group at a time. Therefore, when the DCI indicates an active CG group (i.e., the activated group), all CG configuration members of that CG group become active, while the remaining CG configurations are released (i.e., using automatic deactivation). Therefore, when an indication to activate a configuration group is received, the UE deactivates all configuration groups except the configuration group to be activated. Therefore, in Fig.16 In the example, the base station sends signaling, such as DCI, to activate CG group 4 (and CG4 configuration 4 as part of CG group 4) and deactivate CG group 1 (including CG4 configuration 1). It can be seen that sending one DCI (i.e., DCI3) to activate CG group #2 activates CG2, CG3, and CG4. In addition, DCI3 also releases CG1 (without further signaling). The benefit of group-based configuration and automatic deactivation is reduced signaling overhead.

[0349] Furthermore, note that the signaling overhead can also be reduced by configuring the UE to have a maximum of three of the four resource configurations active and using DCI3 to instruct the UE to activate CG4. In order not to exceed the maximum of the three active resource configurations, the UE can then deactivate resource configuration CG1, for example, because CG1 has been active for the longest time among the resource configurations (alternatively, the linking described below can also be used).

[0350] Configuration change indication-valid time

[0351] As described above, in general, the transmission opportunity may be changed based on the effective time. Thus, the configuration change indication may be an indication of the effective time. The effective time may be configured, for example, by RRC as part of the SPS / CG / SR configuration, or indicated by DCI. In other words, the control signaling indicating the effective time may be DCI or RRC signaling. In general, the effective time may be defined / indicated for (one) resource configuration or resource configuration group.

[0352] Note that the terms "validity time", "validity timer" or "validity duration" refer to the duration that a transmission opportunity of, for example, a resource configuration is valid after activation of the resource configuration. In other words, the validity time indicates or corresponds to the duration that the resources of (one or more) resource configurations are valid after activation. For example, a validity time may be defined for an SPS / CG / SR configuration or an SPS / CG / SR configuration group, indicating the duration that the SPS / CG / SR resources are valid after activation. More specifically, if the UE receives activation control signaling (i.e., control signaling indicating activation of a resource configuration or a resource configuration group; the activation control signaling may be a configuration change indication indicating activation, as described above), the UE (e.g., its circuitry) may

[0353] (i) obtaining an indication of activating a resource configuration (or resource configuration group) from activation control signaling; and

[0354] (ii) Activating a transmission opportunity of the resource configuration within a time interval having a length corresponding to the validity time.

[0355] In other words, the validity time may prevent activation of transmission opportunities of resource configurations that are not within the validity time (starting from activation). Thus, only transmission opportunities within the interval given by the activation and validity times are activated.

[0356] The effective time may be indicated or given according to the number of transmission opportunities provided to the UE for each activation of the resource configuration. In other words, the effective duration may be indicated as the number of resource opportunities provided to the UE by the activation of the resource configuration. However, the present invention is not limited thereto, as the effective time may also be given / specified / indicated as a duration. For example, the effective duration may be indicated according to a time unit (e.g., in ms, frames, time slots, mini-time slots, symbols).

[0357] The validity time may be indicated together with the activation control signaling, or may be a separate signaling. In other words, the configuration change indication may include (i) an indication of the activation of a resource configuration or resource configuration group, and (ii) an indication of the validity time corresponding to the activation. Such a combination or even joint indication may increase flexibility, since a different validity time may be easily indicated for each activation.

[0358] The use of valid time can avoid the need to send an explicit release DCI signal, as shown in Fig.17 More specifically, Fig.17 Row (a) shows the frame arrival of a 60fps video stream over the jitter window at the UE side.

[0359] like Fig.17As shown in row (b), in order to carry a 60fps video stream, the UE receives four DCIs, DCI1 to DCI4, which activate resource configurations CG1 to CG4, respectively. Each of these DCIs activates the corresponding CG configuration and carries an indication of the corresponding activated active opportunity (AO). AO is the number of active CG resource opportunities (i.e., the number of transmission opportunities activated by the corresponding DCI). More specifically, DCI1 activates resource configuration CG1 for 2 transmission opportunities, DCI2 activates resource configuration CG2 for 10 transmission opportunities, DCI3 activates resource configuration CG4 for 18 transmission opportunities, and DCI4 activates resource configuration CG4 for 18 transmission opportunities. As also shown in row (b), since A0=2 is indicated for CG1, CG1 is released after two opportunities. This avoids the transmission of an additional DCI to release the resources of CG1, whose resources drift out of the jitter window after frame 1 and may therefore no longer be needed. For CG2, A0=10. Therefore, CG2 will be released after 10 resource opportunities.

[0360] Resource configuration link

[0361] A resource configuration with a defined validity time can additionally be linked to another resource configuration (ie a resource configuration different from the one with a defined validity time). When the validity time of the first configuration expires, the related resources are released and at the same time, the second (linked) resource configuration is activated.

[0362] More specifically, the UE may receive signaling, denoted herein as "resource configuration linked control signaling". The resource configuration linked control signaling may be (but not necessarily is) part of the same control signaling indicating the validity time and / or the control signaling activating the resource configuration. The resource configuration linked control signaling includes an indication indicating that a transmission opportunity of another resource configuration is to be activated when a transmission opportunity of a resource configuration is deactivated. Thus, the UE activates the transmission opportunity of the another resource configuration after the time interval during which the transmission opportunity of the resource configuration was active.

[0363] Note that the second resource configuration may also have a validity period. Therefore, it is not necessary to activate all transmission opportunities of the second resource configuration after the validity interval of the first configuration.

[0364] The second resource configuration can also be linked to the resource configuration. The resource configuration linked to the second resource configuration can even be the first resource configuration. Alternatively, a larger cycle of three or more resource configurations can be configured, wherein the first resource configuration is finally activated again and the cycle repeats. In addition, configuration groups can be linked. For example, there can be four configuration groups, each with an effective time (same or different), the first group can be linked to the second group, the second group can be linked to the third group, the third group can be linked to the fourth group, and the fourth group can be linked to the first group. If the first configuration group is active and its effective time expires, the first group will be (automatically / in the absence of further signaling) deactivated and the second configuration group is activated. Then, after the effective time of the second group expires, the second group will be activated, and the third group will be activated, the expiration of the first group will then activate the fourth group, and the fourth group then activates the first group again after its timer expires, repeating the cycle of four configuration groups.

[0365] Linking of resource configurations may avoid the need to send explicit activation and / or release DCI signals. Fig.18 The advantages of linking of CG configurations for carrying a 60fps video stream are shown. More specifically, CG1 is configured with an effective time of two active opportunities. In addition, CG1 is connected to CG4. Therefore, CG1 is released after two opportunities. Then, CG4 is activated.

[0366] Hardware and software implementations of the present disclosure

[0367] The present disclosure can be implemented by software, hardware or software and hardware cooperation. Each functional block used in the description of each of the above embodiments can be partially or entirely implemented by an LSI such as an integrated circuit, and each process described in each embodiment can be partially or entirely controlled by the same LSI or a combination of LSIs. LSI can be formed as a chip alone, or a chip can be formed to include some or all functional blocks. LSI may include data input and output coupled thereto. Depending on the degree of integration, the LSI here may be referred to as IC, system LSI, super LSI or ultra LSI. However, the technology for implementing integrated circuits is not limited to LSI, and can be implemented by using a dedicated circuit, a general-purpose processor or a dedicated processor. In addition, an FPGA (field programmable gate array) that can be programmed after manufacturing LSI can be used, or a reconfigurable processor in which the connection and setting of the circuit unit arranged inside the LSI can be reconfigured. The present disclosure can be implemented as digital processing or analog processing. If future integrated circuit technology replaces LSI due to the advancement of semiconductor technology or other derivative technologies, future integrated circuit technology can be used to integrate functional blocks. Biotechnology can also be applied.

[0368] The present disclosure may be implemented by any kind of device, apparatus, or system having a communication function, which is referred to as a communication device.

[0369] The communication device may include a transceiver and a processing / control circuit. The transceiver may include and / or function as a receiver and a transmitter. As a transceiver and a transmitter, the receiver may include an RF (radio frequency) module including an amplifier, an RF modulator / demodulator, etc., and one or more antennas.

[0370] Some non-limiting examples of such communication devices include phones (e.g., cellular (cell) phones, smart phones), tablets, personal computers (PCs) (e.g., laptops, desktop computers, netbooks), cameras (e.g., digital still / video cameras), digital players (digital audio / video players), wearable devices (e.g., wearable cameras, smart watches, tracking devices), game consoles, digital book readers, telehealth / telemedicine (remote health and medicine) devices, and vehicles providing communication capabilities (e.g., cars, airplanes, ships), and various combinations thereof.

[0371] Communication devices are not limited to portable or transportable, and may also include any kind of device, equipment, or system that is non-portable or fixed, such as smart home devices (e.g., appliances, lighting, smart meters, control panels), vending machines, and any other "things" in an "Internet of Things (IoT)" network.

[0372] Communications may include exchanging data via, for example, cellular systems, wireless LAN systems, satellite systems, etc., and various combinations thereof.

[0373] The communication apparatus may include a device such as a controller or a sensor coupled to a communication device that performs the communication functions described in the present disclosure. For example, the communication apparatus may include a controller or a sensor that generates a control signal or a data signal used by the communication device that performs the communication functions of the communication apparatus.

[0374] The communication apparatus may also include infrastructure such as base stations, access points, and any other apparatus, device, or system that communicates with or controls apparatuses such as those in the above non-limiting examples.

[0375] In addition, various embodiments may also be implemented by means of software modules executed by a processor or directly in hardware. Combinations of software modules and hardware implementations are also possible. Software modules may be stored on any type of computer-readable storage medium. Specifically, according to another embodiment, a non-transitory computer-readable recording medium is provided. The recording medium stores a program that, when executed by one or more processors, causes one or more processors to perform the steps of the method according to the present disclosure.

[0376] By way of example and not limitation, 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 media that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer. In addition, any connection is appropriately referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared, radio, and microwave), then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of the medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other temporary media, but are actually directed to non-temporary tangible storage media. As used herein, disks and optical disks include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVDs), floppy disks, and Blu-ray disks, where disks typically reproduce data magnetically, while optical disks reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0377] It should also be noted that the various features of the different embodiments may be used alone or in any combination as the subject of another embodiment. It will be appreciated by those skilled in the art that many changes and / or modifications may be made to the disclosure as shown in the specific embodiments. Therefore, the present embodiments are considered to be illustrative and non-restrictive in all respects.

[0378] Other aspects

[0379] According to a first aspect, a user equipment UE is provided, comprising a circuit and a transceiver. The circuit: (a) obtains an indication of a change in configuration of a transmission opportunity of a resource configuration configured by the UE from control signaling, wherein (i) the resource configuration is a configured grant CG configuration, a semi-persistent scheduling SPS configuration or a scheduling request SR configuration, and (ii) the control signaling is a downlink control signaling DCI, and / or the indication indicating the change is an indication of a valid time, which is a duration for which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; and (b) changes the configuration of the transmission opportunity by applying the indicated change. The transceiver: receives the control signaling, and receives or sends a transmission using one of the changed configured transmission opportunities.

[0380] According to a second aspect provided in addition to the first aspect, the UE is configured with one or more configuration groups, each configuration group in the configuration groups includes a plurality of resource configurations, each resource configuration (included in one of the configuration groups) is a CG configuration, an SPS configuration or an SR configuration, and the resource configuration is part of a configuration group in the configuration group. In addition, the circuit also changes the configuration of transmission opportunities of other resource configurations of the configuration group by applying the indicated change to the configuration, the other resource configurations being resource configurations in the configuration group other than the resource configuration.

[0381] According to a third aspect provided in addition to the second aspect, the transceiver receives configuration group control signaling; and the circuit obtains an indication indicating which resource configurations are in a configuration group of resource configurations from the configuration group control signaling.

[0382] According to a fourth aspect provided in addition to the third aspect, an indication indicating which resource configurations are in a configuration group of resource configurations (for example, also) indicates that a change in configuration of a transmission opportunity of one of the resource configurations of the configuration group will be applied to transmission opportunities of other resource configurations of the configuration group, or a circuit obtains an indication of a change from control signaling to be applied to each resource configuration in the configuration group of the resource configuration.

[0383] According to a fifth aspect provided in addition to one of the first to fourth aspects, the control signaling is a DCI, and the indication indicating the change is an indication of: (i) a value of a configured parameter, (ii) a time offset to be applied to the configured resources, (iii) a frequency offset to be applied to the configured resources, (iv) a change in the periodicity of the configured resources, and / or (v) a modulation and coding scheme MCS index. In addition, when changing the configuration of the transmission opportunity, the circuit changes the configured resources to change the transmission opportunity by: (i) updating the configured parameter to the indicated value, (ii) applying the time offset to the configured resources, (iii) applying the frequency offset to the configured resources, (iv) updating the periodicity of the configured resources, and / or (v) updating the configured MCS index to the indicated MCS index.

[0384] According to a sixth aspect provided in addition to the second or third aspect, the control signaling is a DCI, and the indication indicating the change is an indication of activating or deactivating a transmission opportunity of a resource configuration. In addition, the circuit, when changing the configuration of the transmission opportunity: (i) if the indication indicating the change is an indication of activating the transmission opportunity of the resource configuration, activate the transmission opportunity of the resource configuration in the configuration group of the resource configuration, and (ii) if the indication indicating the change is an indication of deactivating the transmission opportunity of the resource configuration, deactivate the transmission opportunity of the resource configuration in the configuration group of the resource configuration.

[0385] According to the seventh aspect provided in addition to the sixth aspect, the UE is configured to activate the resource configuration of at most one configuration group in the configuration group at a time; and if the indication indicating the change is an indication of activating the transmission opportunity of the resource configuration, the circuit deactivates the transmission opportunity of the resource configuration that is not in the configuration group of the resource configuration.

[0386] According to an eighth aspect provided in addition to the sixth aspect, the resource configuration is part of more than one configuration group. In addition, the circuit obtains an indication of one of the configuration groups as part of an indication indicating a change of the resource configuration from control signaling, the indication indicating the change applies to the one configuration group, and the indicated one configuration group is one of the configuration groups of which the resource configuration is a part. In addition, when changing the configuration of the transmission opportunity, if the indication indicating the change is an indication to activate the transmission opportunity of the indicated one configuration group, the circuit: (i) activates the transmission opportunity of the resource configuration in the indicated one configuration group, and (ii) does not activate the transmission opportunity of the resource configuration not included in the indicated one configuration group. In addition, if the indication indicating the change is an indication to deactivate the transmission opportunity of the indicated one configuration group, the circuit: (i) deactivates the transmission opportunity of the resource configuration in the indicated one configuration group, and (ii) does not deactivate the transmission opportunity of the resource configuration not included in the indicated one configuration group.

[0387] According to the eighth aspect provided in addition to the sixth aspect, each UE is configured to activate the resource configuration of at most one configuration group in the configuration group at a time; and if the indication indicating the change is an indication to activate the transmission opportunity of the indicated one configuration group, the circuit deactivates the transmission opportunity of the resource configuration that is not in the configuration group of the resource configuration.

[0388] According to a tenth aspect provided in addition to any one of the first to fourth aspects, the control signaling is DCI or radio resource control RRC signaling; the indication indicating the change is an indication of a valid time; the transceiver receives activation control signaling; and the circuit: (i) obtains an indication of activating resource configuration from the activation control signaling; and (ii) activates a transmission opportunity of the resource configuration within a time interval having a length corresponding to the valid time.

[0389] According to the eleventh aspect provided in addition to the tenth aspect, the UE is configured with multiple resource configurations, each resource configuration is a CG configuration, an SPS configuration or an SR configuration, and the multiple resource configurations include resource configurations; the transceiver receives resource configuration link control signaling; the circuit obtains from the resource configuration link control signaling an indication of a transmission opportunity of another resource configuration to be activated when the transmission opportunity of the resource configuration is deactivated, and the other resource configuration is a resource configuration other than the resource configuration in the multiple resource configurations; and the circuit activates the transmission opportunity of the other resource configuration after the time interval in which the transmission opportunity of the resource configuration is active.

[0390] According to a twelfth aspect provided in addition to the tenth or eleventh aspect, the control signaling is RRC signaling; and the circuit obtains an indication of a resource indicating the resource configuration from the RRC signaling, thereby configuring the UE with the resource configuration.

[0391] According to the thirteenth aspect, a method for a user equipment UE is provided. The method comprises the following steps: (i) receiving control signaling; (ii) obtaining an indication of a change in the configuration of a transmission opportunity of a resource configuration configured by the UE from the control signaling, wherein (a) the resource configuration is a configured licensed CG configuration, a semi-persistent scheduling SPS configuration, or a scheduling request SR configuration, and (b) the control signaling is a downlink control signaling DCI, and / or the indication indicating the change is an indication of a valid time, which is a duration for which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; (iii) changing the configuration of the transmission opportunity by applying the indicated change; and (iv) receiving or sending a transmission using one of the transmission opportunities of the changed configuration.

[0392] According to a fourteenth aspect, a scheduling device is provided. The scheduling device includes a circuit and a transceiver. The circuit: (i) determines a change in the configuration of a transmission opportunity of a resource configuration; and (i) generates control signaling including an indication indicating the change, wherein (a) the resource configuration is a configured license CG configuration, a semi-persistent scheduling SPS configuration, or a scheduling request SR configuration, and (b) the control signaling is a downlink control signaling DCI, and / or the indication indicating the change is an indication of a valid time, which is the duration during which the transmission opportunity of the resource configuration is valid after activation of the resource configuration. The transceiver: (i) sends the control signaling, and (ii) receives or sends a transmission using one of the changed configured transmission opportunities.

[0393] According to a fifteenth aspect, a method for scheduling a device is provided. The method comprises the following steps: (i) determining a change in configuration of a transmission opportunity of a resource configuration; (ii) generating control signaling including an indication of the change, wherein (a) the resource configuration is a configured license CG configuration, a semi-persistent scheduling SPS configuration, or a scheduling request SR configuration, and (b) the control signaling is a downlink control signaling DCI, and / or the indication of the change is an indication of a valid time, which is a duration during which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; (iii) sending the control signaling; and (iv) receiving or sending a transmission using one of the transmission opportunities of the changed configuration.

[0394] Further aspects are provided for the method according to the thirteenth aspect, which correspond to the steps performed by any one of the first to twelfth aspects or the above-mentioned UE.

[0395] Further aspects of the scheduling device according to the fourteenth aspect are provided, wherein the circuit is operated by any of the network nodes described above (in the specific aspect that the circuit of the scheduling device generates and the transceiver sends control signaling including any of the above indications).

[0396] Further aspects are provided for the method according to the fifteenth aspect, which correspond to the steps performed by any of the network nodes above (in the specific aspect comprising the steps of generating and sending control signaling including any of the indications above).

[0397] According to a sixteenth aspect, a program stored on a (non-temporary) storage medium and comprising code instructions, which when executed on one or more processors of a user device cause the one or more processors to perform the steps of any of the above methods.

[0398] According to the seventeenth aspect, an integrated circuit is provided, comprising a processing circuit and an interface to a (possibly external) transceiver. The processing circuit is configured (by hardware and / or software) to (a) obtain an indication of a change in the configuration of a transmission opportunity of a resource configuration configured by the UE from control signaling, wherein (i) the resource configuration is a configured authorized CG configuration, a semi-persistent scheduling SPS configuration, or a scheduling request SR configuration, and (ii) the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a valid time, the valid time being the duration for which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; and (b) change the configuration of the transmission opportunity by applying the indicated change. The processing circuit may receive the control signaling through an interface to the transmitter, and receive or send a transmission using one of the changed configured transmission opportunities.

[0399] According to an eighteenth aspect, an integrated circuit is provided, comprising a processing circuit and an interface to a (possibly external) transceiver. The processing circuit is configured (by hardware and / or software) to (i) determine a change in the configuration of a transmission opportunity of a resource configuration; and (i) generate control signaling including an indication indicating the change, wherein (a) the resource configuration is a configured authorized CG configuration, a semi-persistent scheduling SPS configuration, or a scheduling request SR configuration, and (b) the control signaling is a downlink control signaling DCI, and / or the indication indicating the change is an indication of a valid time, which is the duration for which the transmission opportunity of the resource configuration is valid after activation of the resource configuration. The processing circuit can (i) send the control signaling through the interface to the transmitter, and (ii) receive or send a transmission using one of the changed configured transmission opportunities.

[0400] In summary, some exemplary embodiments relate to a communication device, a base station, and corresponding methods for the communication device and the base station. For example, the communication device is a user equipment (UE) including a circuit and a transceiver. The circuit can be configured to (a) obtain an indication of a change in the configuration of a transmission opportunity of a resource configuration configured by the UE from control signaling, wherein (i) the resource configuration is a configured grant (CG) configuration, a semi-persistent scheduling (SPS) configuration, or a scheduling request (SR) configuration, and (ii) the control signaling is downlink control signaling (DCI) and / or the indication indicating the change is an indication of a valid time, which is the duration of time that the transmission opportunity of the resource configuration is valid after the activation of the resource configuration; and (b) change the configuration of the transmission opportunity by applying the indicated change. The transceiver can be configured to receive the control signaling and receive or send a transmission using one of the changed configured transmission opportunities.

Claims

1. A user equipment UE, comprising: A circuit which: - obtaining an indication of a change in the configuration of a transmission opportunity of a resource configuration configured by the UE from control signaling, wherein o The resource configuration is a configured Granted CG configuration, a Semi-Persistent Scheduling SPS configuration, or a Scheduling Request SR configuration, and o the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a validity time, the validity time being a duration during which a transmission opportunity of the resource configuration is valid after activation of the resource configuration; and - changing said configuration of said transmission opportunities by applying the indicated changes; and A transceiver that: - receiving said control signaling, and - receiving or sending a transmission using one of said transmission opportunities of the changed configuration.

2. The UE according to claim 1, wherein The UE is configured with one or more configuration groups, each configuration group includes a plurality of resource configurations, each resource configuration is a CG configuration, an SPS configuration or an SR configuration, and the resource configuration is part of a configuration group in the configuration group; and The circuitry also changes the configuration of transmission opportunities of other resource configurations of the configuration group by applying the indicated change also, the other resource configurations being resource configurations in the configuration group other than the resource configuration.

3. The UE according to claim 2, wherein The transceiver receives configuration group control signaling; and The circuit obtains an indication from configuration group control signaling indicating which resource configurations are in a configuration group of resource configurations.

4. The UE according to claim 3, wherein the indication indicating which resource configurations are in the configuration group of the resource configurations indicates that a change to the configuration of a transmission opportunity of one of the resource configurations in the configuration group is to be applied to transmission opportunities of the other resource configurations in the configuration group, or The circuitry obtains from the control signaling an indication that the change applies to each resource configuration in the group of configurations of the resource configuration.

5. The UE according to any one of claims 1 to 4, wherein The control signaling is a DCI, and the indication indicating the change is the following indication: - the values ​​of the configured parameters, - a time offset of said resource to be applied to said configuration, - a frequency offset to be applied to said resource of said configuration, - periodic changes of said resources of said configuration, and / or - Modulation and Coding Scheme MCS index; and When changing the configuration of the transmission opportunity, the circuit changes the transmission opportunity by changing the configured resource in the following manner: - updating said parameters of said configuration to the indicated values, - applying said time offset to said resources of said configuration, - applying said frequency offset to said resources of said configuration, - updating said periodicity of said resources of said configuration, and / or -Update the configured MCS index to the indicated MCS index.

6. The UE according to claim 2 or 3, wherein: The control signaling is a DCI, and the indication indicating the change is an indication of activating or deactivating the transmission opportunity of the resource configuration; and The circuit, when changing the configuration of the transmission opportunity: - if said indication indicating said change is an indication to activate said transmission opportunity of said resource configuration, activating a transmission opportunity of a resource configuration in said configuration group of said resource configuration, and - if said indication indicating said change is an indication to deactivate said transmission opportunities of said resource configuration, deactivating said transmission opportunities of said resource configuration in said configuration group of said resource configuration.

7. The UE according to claim 6, wherein: The UE is configured to have resource configurations of at most one of the configuration groups active at a time; and If the indication indicating the change is an indication to activate a transmission opportunity of a resource configuration, the circuitry deactivates a transmission opportunity of a resource configuration that is not in a configuration group of the resource configuration.

8. The UE according to claim 6, wherein: The resource configuration is part of more than one of the configuration groups; The circuit: - obtaining from said control signalling an indication of one of said configuration groups as part of said indication indicating said change of said resource configuration, said indication indicating that said change applies to said one of said configuration groups, said indicated one of said configuration groups being one of said configuration groups of which said resource configuration is a part; In changing the configuration of the transmission opportunity: - if the indication indicating the change is an indication to activate the transmission opportunity of the indicated one of the configuration groups, then: oactivate a transmission opportunity for a resource configuration in the indicated one of the configuration groups, and o not activating transmission opportunities of resource configurations that are not included in the indicated one of the configuration groups; and - if the indication indicating the change is an indication to deactivate the transmission opportunities of the indicated one of the configuration groups, then: o deactivate the transmission opportunities of the resource configurations in the indicated one configuration group, and o Transmission opportunities of resource configurations not included in the indicated one of the configuration groups are not deactivated.

9. The UE according to claim 8, wherein: The UE is configured to have resource configurations of at most one of the configuration groups active at a time; and If the indication indicating the change is an indication to activate transmission opportunities of the indicated one configuration group, the circuitry deactivates transmission opportunities of resource configurations that are not in the configuration group of the resource configurations.

10. The UE according to any one of claims 1 to 4, wherein The control signaling is DCI or radio resource control RRC signaling; said indication indicating said change is an indication of said effective time; The transceiver receives activation control signaling; and The circuit: - obtaining an indication to activate the resource configuration from the activation control signaling; and - activating transmission opportunities of said resource configuration within a time interval having a length corresponding to said validity time.

11. The UE according to claim 10, wherein: The UE is configured with a plurality of resource configurations, each resource configuration is a CG configuration, an SPS configuration or an SR configuration, and the plurality of resource configurations include the resource configuration; The transceiver receives resource configuration link control signaling; the circuitry obtaining, from the resource configuration link control signaling, an indication indicating that a transmission opportunity of another resource configuration is to be activated when a transmission opportunity of the resource configuration is deactivated, the another resource configuration being a resource configuration other than the resource configuration in a plurality of resource configurations; and The circuit activates a transmission opportunity of another resource configuration following a time interval during which the transmission opportunity of the resource configuration was active.

12. The UE according to claim 10 or 11, wherein: The control signaling is the RRC signaling; and The circuit obtains an indication of resources indicative of a resource configuration from RRC signaling, thereby configuring the UE with the resource configuration.

13. A method for a user equipment UE, the method comprising the following steps: receiving control signaling; obtaining, from the control signaling, an indication of a change in configuration of a transmission opportunity of a resource configuration configured by the UE, wherein - the resource configuration is a configured grant CG configuration, a semi-persistent scheduling SPS configuration or a scheduling request SR configuration, and - the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a validity time, the validity time being a duration during which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; changing the configuration of the transmission opportunities by applying the indicated changes; and A transmission is received or sent using one of the transmission opportunities of the changed configuration.

14. A scheduling device, comprising: A circuit which: - determining a change in the configuration of transmission opportunities of a resource configuration; and - generating control signaling comprising an indication indicating said change, wherein o The resource configuration is a configured Granted CG configuration, a Semi-Persistent Scheduling SPS configuration, or a Scheduling Request SR configuration, and o the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a validity time, the validity time being a duration during which a transmission opportunity of the resource configuration is valid after activation of the resource configuration; and A transceiver that: - sending said control signaling, and - receiving or sending a transmission using one of said transmission opportunities of the changed configuration.

15. A method for scheduling a device, the method comprising the following steps: determining a change in configuration of a transmission opportunity of a resource configuration; generating control signaling including an indication indicating the change, wherein - the resource configuration is a configured grant CG configuration, a semi-persistent scheduling SPS configuration or a scheduling request SR configuration, and - the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a validity time, the validity time being a duration during which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; sending the control signaling; as well as A transmission is received or sent using one of the transmission opportunities of the changed configuration.

16. An integrated circuit controlling a process of a user equipment UE, the process comprising the following steps: receiving control signaling; obtaining, from the control signaling, an indication of a change in configuration of a transmission opportunity of a resource configuration configured by the UE, wherein - the resource configuration is a configured grant CG configuration, a semi-persistent scheduling SPS configuration or a scheduling request SR configuration, and - the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a validity time, the validity time being a duration during which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; changing the configuration of the transmission opportunities by applying the indicated changes; and A transmission is received or sent using one of the transmission opportunities of the changed configuration.

17. An integrated circuit controlling a process of scheduling a device, the process comprising the steps of: determining a change in configuration of a transmission opportunity of a resource configuration; generating control signaling including an indication indicating the change, wherein - the resource configuration is a configured grant CG configuration, a semi-persistent scheduling SPS configuration or a scheduling request SR configuration, and - the control signaling is downlink control signaling DCI, and / or the indication indicating the change is an indication of a validity time, the validity time being a duration during which the transmission opportunity of the resource configuration is valid after activation of the resource configuration; Sending the control signaling; as well as A transmission is received or sent using one of the transmission opportunities of the changed configuration.

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