Wireless communication device and method

Abstract

Improve geographical location of network accessibility. [Solution] A wireless communication device for use in a wireless communication network comprises a communication circuit configured to transmit or receive a wireless signal, and a control circuit configured to control the communication circuit to receive a first wireless signal, the first wireless signal being comprised of downlink control information (DCI), to instruct a waveform to be used by the wireless communication device when transmitting a second wireless signal, and to control the communication circuit to transmit the second wireless signal using the instructed waveform.

Description

[Technical field]

[0001] The present disclosure relates to wireless communication devices and methods. [Background technology]

[0002] The provided "Background" discussion is intended to generally set forth the context of the present disclosure. The inventors' work, to the extent that it is described in the Background section, as well as aspects of the present specification that may not qualify as prior art at the time of filing, are not admitted expressly or impliedly as prior art to the present disclosure.

[0003] Recent generations of mobile communication systems, such as those based on the Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), and 5G New Radio (NR) architectures defined by the 3rd Generation Partnership Project (3GPP(RTM)), can support a wider range of services than the simple voice and messaging services offered by previous generations of mobile communication systems. For example, the improved air interface and enhanced data rates offered by LTE and NR systems enable users to experience high data rate applications, such as mobile video streaming and mobile video conferencing, that were previously only available over fixed-line data connections. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] Holma H. ​​and Toskala A, “LTE for UMTS OFDMA and SC-FDMA based radio access”, John Wiley and Sons, 2009. [Non-Patent Document 2] 3GPP TS 38.214 V15 (Release 15) [Non-Patent Document 3] RP-213579, "New Wl: Further Enhancement of NR Coverage," 3GPP TSG RAN Meeting #94e, December 6-17, 2021 [Non-Patent Document 4] RWS-210307, ​​“Discussion on Release 18 MIMO enhancements”, Ericsson, 3GPP TSG-RAN Rel-18 workshop, 28 June-2 July 2021 [Non-Patent Document 5] 3GPP TS 38.213 V17 (Release 17) Summary of the Invention [Problem to be solved by the invention]

[0005] In addition to supporting these types of advanced services and devices, new generation mobile communication systems such as NR are also proposed to support less complex services and devices that take advantage of the reliable and wide-area coverage of the new generation mobile communication systems without necessarily relying on the high data rates available in the new generation mobile communication systems. For example, less complex devices are small devices equipped with sensors and small batteries. Such less complex devices typically need to transmit sensor data infrequently and / or at low data rates.

[0006] There is therefore a strong desire to deploy such networks and a desire to improve the coverage area of ​​such networks, i.e. the geographic locations from which the networks can be accessed. [Means for solving the problem]

[0007] The present disclosure is defined by the claims.

[0008] Non-limiting embodiments and advantages of the present disclosure are described with reference to the following detailed description taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0009] [Figure 1] 1 illustrates diagrammatically some elements of a wireless communication system of LTE type; [Diagram 2] 1 illustrates diagrammatically some elements of an NR type wireless communication system; [Diagram 3] 3 illustrates generally in more detail some of the components of the wireless communication system shown in FIG. 2; [Figure 4A] 1 illustrates an example of a first method for controlling a wireless communication device. [Figure 4B] 1 illustrates an example of a first method for controlling a wireless communication device. [Figure 5A] 2 illustrates an example of a second method for controlling a wireless communication device. [Figure 5B] 2 illustrates an example of a second method for controlling a wireless communication device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Like reference numbers indicate the same or corresponding parts throughout the drawings.

[0011] Long Term Evolution (LTE) wireless communication system

[0012] 1 is a schematic diagram illustrating some basic features of a mobile communications network / system 6 that generally operates according to LTE principles, but may support other radio access technologies and be adapted to implement embodiments of the present disclosure described herein. Certain aspects of the various elements of FIG. 1 and their respective modes of operation are well known and defined in the relevant standards administered by the 3GPP organization, and are also described in many books on the subject, such as "3GPP LTE Standards for Mobile Communications," IEEE Transactions on Wireless and Wireless Communications (IEEE 802.11b), pp. 1171-1175, 2002. It will be understood that aspects of the operation of the telecommunications network described herein that are not specifically described (e.g., with respect to specific communication protocols and physical channels for communicating between different elements) may be implemented according to any known techniques, such as the relevant standards and known amendments and additions thereto.

[0013] The network 6 includes a number of base stations 1 connected to a core network 2. Each base station provides a coverage area 3 (ie, a cell) in which data communication with a communication device 4 is possible.

[0014] Although each base station 1 is shown as a single entity in Figure 1, those skilled in the art will appreciate that some of the functions of a base station may be performed by separate elements connected to each other, such as antenna(s), remote radio heads, amplifiers, etc. Collectively, one or more base stations can form a radio access network.

[0015] Data is transmitted from the base stations 1 to the communication devices 4 within their respective coverage areas 3 via a radio downlink (DL). Data is transmitted from the communication devices 4 to the base stations 1 via a radio uplink (UL). A core network 2 routes data to and from the communication devices 4 via their respective base stations 1 and provides functions such as authentication, mobility management, charging, etc. The communication devices may also be referred to as mobile stations, user equipment (UE), user terminals, mobile radios, terminal devices, etc.

[0016] Services provided by the core network 2 may include connectivity to the Internet or connectivity to external telephone services. The core network 2 may also track the location of the communication device 4 so that it can efficiently contact (i.e., page) the communication device 4 to transmit downlink data directed to the communication device 4.

[0017] A base station, which is an example of a network infrastructure device, may also be referred to as a transceiver station, nodeB, e-nodeB, eNB, g-nodeB, gNB, etc. (note that g-nodeB and gNB are related to 5G New Radio - see below). In this regard, different terms are often associated with different generations of wireless communication systems for elements that provide broadly equivalent functionality. However, certain embodiments of the present disclosure may be similarly implemented in wireless communication systems of different generations, and for simplicity, a particular terminology may be used regardless of the underlying network architecture. That is, the use of a particular terminology in connection with certain exemplary embodiments is not intended to indicate that these embodiments are limited to a particular generation of networks that may be most relevant to that particular terminology.

[0018] In this disclosure, any device (eg, communication device, infrastructure device, etc.) that transmits and / or receives wireless communication signals in any of the illustrated wireless communication network I systems may be referred to generally as a wireless communication device.

[0019] 5G New Radio (NR) wireless communication system

[0020] An example of the configuration of a wireless communication network using some of the terminology proposed for NR is shown in FIG. 2. In FIG. 2, a number of transmission / reception points (TRP) 10 are connected to distributed control units (DUs) 41, 42 by connection interfaces represented as lines 16. Each of the TRPs 10 is arranged to transmit and receive signals over a radio access interface within the radio frequency bandwidth available in the wireless communication network. Thus, within the range for performing wireless communication over the radio access interface, each of the TRPs 10 forms a cell of the wireless communication network, as represented by a circle 12. In this way, a wireless communication device 14 that is within the wireless communication range provided by the cell 12 can transmit and receive signals to and from the TRP 10 over the radio access interface. Each of the distributed units 41, 42 is connected to a central unit (CU) 40 (sometimes referred to as a control node) via an interface 46. The central unit 40 is then connected to a core network 20 that may include all other functions necessary for data communication between the wireless communication devices and the core network 20. The core network 20 may also be connected to other networks 300.

[0021] The elements of the radio access network illustrated in Figure 2 may operate similarly to the corresponding elements of the LTE network described with respect to the example of Figure 1. It will be understood that operational aspects of the telecommunications network represented in Figure 2, and other networks described herein in accordance with embodiments of the present disclosure, that are not specifically described (e.g., those relating to particular communication protocols and physical channels for communicating between different elements) may be implemented in accordance with any known technique, e.g., in accordance with currently used approaches for implementing such operational aspects of wireless communication systems, e.g., in accordance with relevant standards.

[0022] The TRP 10 of FIG. 2 may have functionality corresponding, in part, to a base station or eNodeB of an LTE network. Similarly, the communication device 14 may have functionality corresponding to a UE device 4 known for operation in an LTE network. It will therefore be understood that operational aspects of an NR network (e.g., aspects related to specific communication protocols and physical channels for communicating between different elements) may differ from those known from LTE or other known mobile communication standards. However, it will also be understood that each of the core network components, base stations, and communication devices of an NR network are functionally similar to the core network components, base stations, and communication devices of an LTE wireless communication network, respectively.

[0023] In terms of broad top-level functionality, the core network 20 connected to the NR telecommunication system depicted in Fig. 2 can be broadly considered to correspond to the core network 2 depicted in Fig. 1, and the central unit 40 and associated DUs 41, 42 / TRP 10 can be broadly considered to provide functionality corresponding to the base station 1 of Fig. 1. The term network infrastructure equipment / access node can be used to encompass these elements as well as traditional base station type elements of a wireless communication system. Scheduling responsibility for transmissions scheduled on the air interface between the respective distributed units and the communication devices lies with the CU 40, the DUs 41, 42 and / or the TRP 10, depending on the application at hand. The communication devices 14 are depicted in Fig. 2 within the coverage area of ​​the respective communication cells 12. These communication devices 14 can therefore send and receive signals to and from the CU 40 via the TRP 10 associated with the respective communication cell 12.

[0024] Furthermore, it will be appreciated that FIG. 2 represents merely one example of a proposed architecture for an NR-based telecommunications system in which an approach consistent with the principles described herein may be employed, and that the functionality disclosed herein may also be applied in relation to wireless communication systems having different architectures.

[0025] Thus, certain embodiments of the present disclosure described herein may be implemented in wireless communication systems / networks according to a variety of different architectures, such as the exemplary architectures shown in Figures 1 and 2. Thus, it will be understood that the particular wireless communication architecture in any given implementation is not of primary importance to the principles described herein. In this regard, certain embodiments of the present disclosure may be generally described in the context of communication between network infrastructure equipment / access nodes and communication devices, with the particular nature of the network infrastructure equipment / access nodes and communication devices depending on the network infrastructure of the implementation at hand. For example, in some scenarios, the network infrastructure equipment / access nodes may consist of base stations, such as the LTE type base station 1 as shown in Figure 1, adapted to provide functionality in accordance with the principles described herein, while in other examples, the network infrastructure equipment may consist of CU 40, DU 41, 42 and I or TRP 10 of the type shown in Figure 2, adapted to provide functionality in accordance with the principles described herein.

[0026] A more detailed view of some of the constituent elements of the network shown in Figure 2 is provided by Figure 3. In Figure 3, the TRP 10 as shown in Figure 2 comprises, as a simplified representation, a radio transmitter 30, a radio receiver 32, and a controller or control processor 34 configured to control the transmitter 30 and the receiver 32 to transmit radio signals to and receive radio signals from one or more UEs 14 in the cell 12 formed by the TRP 10. As shown in Figure 3, an exemplary UE 14 is shown to include a corresponding radio transmitter 49, a radio receiver 48, and a controller or control processor 44 configured to control the transmitter 49 to transmit signals representing uplink data to a wireless communication network via a radio access interface formed by the TRP 10 and to control the receiver 48 to receive downlink data as signals transmitted by the transmitter 30.

[0027] The transmitters 30, 49 and receivers 32, 48 (as well as other transmitters, receivers and transceivers described in connection with examples and embodiments of the present disclosure) may include radio frequency filters and amplifiers as well as signal processing components and devices to transmit and receive wireless signals, for example, according to the 5G / NR standard. The controllers 34, 44 (as well as other controllers described in connection with examples and embodiments of the present disclosure) may be, for example, a microprocessor, a CPU or a dedicated chipset, and are configured to execute instructions stored in a computer-readable medium, such as a non-volatile memory. The processing steps described herein may be implemented, for example, by a microprocessor in conjunction with a random access memory operating according to instructions stored in a computer-readable medium.

[0028] 3, the TRP 10 also includes a network interface 50 that connects to the DU 42 via the physical interface 16. The network interface 50 thus provides a communication link for data and signaling traffic from the TRP 10 to the core network 20 via the DU 42 and the CU 40.

[0029] The interface 46 between the DU 42 and the CU 40 is known as the F1 interface, which may be a physical interface or a logical interface. The F1 interface 46 between the CU and the DU may operate according to the specifications 3GPP TS 38.470 and 3GPP TS 38.473, and may be formed, for example, from optical fiber or other wired high bandwidth connections. In one example, the connection 16 from the TRP 10 to the DU 42 is optical fiber. The connection between the TRP 10 and the core network 20 may generally be referred to as the backhaul, which consists of the interface 16 from the network interface 50 of the TRP 10 to the DU 42 and the F1 interface 46 from the DU 42 to the CU 40.

[0030] It is desirable to be able to improve cell coverage, especially for UEs located at the edge of the cell. 3GPP has already finalized the basic version of 5G in 3GPP Release 15, known as NR (New Radio), with further enhancements being added in 3GPP Releases 16 and 17. In these releases, downlink transmissions are based on CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveforms, while the uplink can use either CP-OFDM or DFT-S-OFDM (Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing) waveforms.

[0031] The advantage of supporting DFT-S-OFDM in the uplink is that it has a lower PAPR (Peak-to-Average Power Ratio) than CP-OFDM, which improves coverage, especially when the UE is at the cell edge. The lower PAPR allows the UE to transmit at a higher average power, improving UL coverage. DFT-S-OFDM is also known as Single Carrier-Frequency Division Multiple Access (SC-FDMA) or transform precoding. Alternatively, the power amplifier in the UE can be operated with less backoff, so the UE can transmit in a more efficient manner, at the same radiated power level. However, DFT-S-OFDM implemented in 3GPP Release 15 to Release 17 only supports single stream / layer transmission to reduce implementation complexity.

[0032] In terms of informing the UE which waveform to use in the uplink, the UE receives higher layer "broadcast" signaling (e.g., in System Information Block 1 (SIB1)) to enable or disable the use of DFT-S-OFDM for Message 3 (Msg3) transmission during the random access procedure. Alternatively, the UE may receive dedicated (e.g., RRC) signaling as part of the PUSCH (Physical Uplink Shared Channel) configuration for UL transmission. Configuration details for supporting both CP-OFDM and DFT-S-OFDM in the uplink are described, for example, in section 6.1.3 of 3GPP TS 2013-01-13444.

[0033] However, these methods of specifying the use of CP-OFDM or DFT-S-OFDM waveforms in the uplink have proven to be relatively limited and inflexible, and more dynamic switching is desired, for example to allow UEs located at the cell edge to more easily switch to using the DFT-S-OFDM waveform to improve cell coverage.

[0034] In 3GPP Release 18, a new Work Item (WI) (3GPP Release 18) was approved to provide justification for enhancing the use of DFT-S-OFDM in the uplink. It also highlights the shortcomings of current approaches (e.g., SIB1-based and RRC-based) and the need for enhancements to support dynamic switching between DFT-S-OFDM and CP-OFDM. 3GPP Release 18 also goes into more detail on the technical considerations and potential benefits of such dynamic switching.

[0035] The present technology helps to solve this problem of how to allow a UE to dynamically switch the waveform it uses for its next uplink transmission.

[0036] The present technology provides a number of efficient ways to dynamically switch between DFT-S-OFDM and CP-OFDM uplink waveforms. For example, the uplink waveform may be indicated for each scheduled UL transmission (e.g., by being explicitly or implicitly indicated in the scheduled downlink control information (DCI)). In another example, the uplink waveform is semi-persistently scheduled, and the indicated waveform is applied for a pre-determined period or until a waveform update is signaled. In another example, the uplink waveform is semi-stationarily configured, but there is an opportunity for the network scheduler to flexibly change the uplink waveform. These examples are described in detail below.

[0037] To support dynamic switching between DFT-S-OFDM and CP-OFDM waveforms according to an embodiment, signaling is required to indicate which waveform the UE can employ for UL transmission.

[0038] Explicit indication by Scheduling DCI

[0039] In a first example, the uplink waveform of each scheduled UL transmission is explicitly indicated in the scheduling DCI.

[0040] In an embodiment, one bit in the DCI is used to indicate either a DFT-S-OFDM waveform or a CP-OFDM waveform. For a Configured Grant (CG) PUSCH, more specifically for CG type 2, the activation DCI / command may include a bit to inform the UE that the CG PUSCH transmission should apply either a DFT-S-OFDM waveform or a CP-OFDM waveform. Such a one-bit indicator may also be used in the activation DCI for a Semi-Persistent Scheduling (SPS) Physical Downlink Shared Channel (PDSCH), and is applied to the waveform of the Physical Uplink Control Channel (PUCCH) used to carry Hybrid Automatic Repeat Request (HARQ) feedback (such as HARQ-ACK / NACK) for the SPS PDSCH.

[0041] In an embodiment, if the activation DCI indicates a CG-PUSCH type 2 or SPS PDSCH waveform, the indicated waveform is applied to the first M transmissions or M transmission opportunities. The CG-PUSCH and SPS PDSCH are semi-statically configured periodic resources in the UL and DL, respectively. They are used for periodic traffic, reducing the need for constant UL Grant or DL ​​Grant transmission, respectively. It should be understood that these periodic UL and DL resources may not be used for transmission. However, these periodic resources provide transmission opportunities that the UE (in the UL case) or gNB (in the DL case) can use when it has data to transmit. In this embodiment, only the first M transmissions or M transmission opportunities use the indicated waveform, and the remaining transmissions use the semi-statically configured waveform. This recognizes that the UE's condition may change and a waveform that was beneficial when the activation DCI was transmitted may not be beneficial after M transmissions.

[0042] For example, the UE may initially be at the cell edge when it receives the activation DCI, but then after some periods of CG-PUSCH / SPS PDSCH, it may move towards the cell center. For example, the UE is configured with a default semi-static waveform, such as CP-OFDM, for the PUSCH. If M=1 and the activation DCI for the CG-PUSCH indicates to use a DFT-S-OFDM waveform, then the UE applies DFT-S-OFDM in the first CG-PUSCH transmission after receiving the activation DCI for that CG-PUSCH, and uses CP-OFDM (i.e., the default semi-static waveform) in the remaining transmissions (i.e., the second, third, fourth, etc. CG-PUSCH transmissions). The value M may, for example, be configured by the RRC, specified in the specification, or dynamically indicated in the activation DCI.

[0043] In an embodiment, the NR Time Domain Resource Allocation (TDRA) field is used for waveform representation. TDRA is a field in the DCI that indicates the number of symbols in a slot that the UE is assigned to transmit the PUSCH. TDRA is specified in a table entry. For example, the default table described in 3GPP TS 2013-010112, clause 6.1.2.1.1-2, is shown as Table 1 (Figure 6) (columns are added as described below). The default table includes a number of parameters, such as the PUSCH mapping type, the time difference between the UL scheduling DCI and the corresponding PUSCH (K2), the starting symbol of the PUSCH (S) and the PUSCH duration in slots (L). In this example, an additional column (the right-most column) is added to the table to indicate whether the allocation defined in each row applies to DFT-S-OFDM or CP-OFDM. Thus, based on the table index indicated in the TDRA field, the UE can determine whether the waveform of the PUSCH should be DFT-S-OFDM or CP-OFDM. [Table 1]

[0044] Table 2 shows a variation of Table 1. In Table 1, each indication of DFT-S-OFDM or CP-OFDM is associated with a different value of "PUSCH mapping type, K2, S, L", whereas in Table 2, DFT-S-OFDM or CP-OFDM can be indicated for the same value of "PUSCH mapping type, K2, S, L". [Table 2]

[0045] A DL grant that schedules a PDSCH also schedules a PUCCH that carries the HARQ-ACK / NACK for that PDSCH. One of the PUCCH scheduling fields used in a DL grant is the PUCCH Resource Indicator (PRI). The PRI points to an index in a PUCCH resource set table, where each index is mapped to a PUCCH resource (e.g., frequency resource) and a PUCCH format for the scheduled PUCCH. In one embodiment, a new parameter is set in the PUCCH resource set that also indicates the waveform that the UE should use. For example, a subset of the PUCCH resource set indexes indicates DFT-S-OFDM and another subset indicates CP-OFDM.

[0046] Scheduling Implicit instructions via PCI

[0047] In a second example, the uplink waveform for each scheduled UL transmission is implicitly indicated in the scheduling DCI.

[0048] In NR, there are two types of DCI: fallback DCI and normal DCI. Fallback DCI applies not only when the UE is in connected mode, but also during initial access. The content and size of fallback DCI do not change (i.e., the content and size are fixed) during initial access and when the UE transitions to connected mode. On the other hand, normal DCI is only used when the UE is in connected mode, and its content and size are configurable by RRC signaling. In one embodiment, to support dynamic switching between DFT-S-OFDM and CP-OFDM waveforms, fallback DCI is associated with DFT-S-OFDM and normal DCI is associated with CP-OFDM (or vice versa). For example, if the UE schedules a PUSCH using fallback DCI, the UE transmits the PUSCH using DFT-s-OFDM waveform, and if the UE schedules it using normal DCI, the UE transmits it using CP-OFDM waveform.

[0049] In the current specification, a UE in connected mode can monitor DCI masked with different UE-specific Radio Network Temporary Identifiers (RNTIs), such as C-RNTI, CS-RNTI, MCS-C-RNTI, and SP-CSI-RNTI. Masking of the DCI can be achieved in various ways, including masking the Cyclic Redundancy Check (CRC) of the DCI with the RNTI (e.g., XORing the CRC with the RNTI) or generating a scrambling sequence as a function of the RNTI and XORing the bits carried by the DCI with the scrambling sequence. In one embodiment, the use of these RNTIs indicates CP-OFDM, while a new RNTI is designated to indicate DFT-S-OFDM. The new RNTIs may be named, for example, DFT-C-RNTI, DFT-CS-RNTI, DFT-MCS-C-RNTI, and DFT-SP-CSI-RNTI (i.e., the DFT-S-OFDM equivalents of the existing RNTIs, where CP-OFDM is the default designation), or the existing RNTIs may be designated to indicate DFT-S-OFDM and the new RNTIs to indicate CP-OFDM.

[0050] In an embodiment, the legacy MCS-C-RNTI is used to distinguish between DFT-S-OFDM and CP-OFDM. In 3GPP Release 15, the UE may be dynamically signaled (e.g., by masking the DCI) via the MCS-C-RNTI indicating the use of a more robust MCS table (e.g., to provide higher reliability) or via the C-RNTI indicating the use of a default MCS table (e.g., designed for traffic such as enhanced mobile broadband (eMBB)). The more robust MCS table associated with the MCS-C-RNTI is beneficial for cell-edge UEs (as such a table has modulation and coding scheme (MCS) entries with lower code rates compared to the default MCS table). The more robust MCS table can further extend cell-edge coverage by using DFT-S-OFDM. Therefore, if the DL / UL grant has CRC (Cyclic Redundancy Check) masked with MCS-C-RNTI, a more robust MCS table is used and DFT-S-OFDM is used, otherwise (i.e., if C-RNTI is used), the default MCS table is used and CP-OFDM is used.

[0051] If the UE is at the cell edge, it is likely that the UE will be configured with repetition to increase coverage. In one embodiment, the repetition information is associated with whether to use DFT-S-OFDM. For example, whenever the UE is scheduled with a repetition having a repetition factor (e.g., number of repetitions) greater than a threshold X, the UE applies DFT-S-OFDM for scheduled UL transmissions. Otherwise (i.e., when the repetition factor is less than or equal to X), the UE uses CP-OFDM. The value of X can be fixed in the specification, such as X=1, or can be configured by RRC.

[0052] In an embodiment, the first Y repetitions may use one waveform (e.g., an implicitly or explicitly indicated waveform), and the remaining repetitions after the first Y repetitions may use another waveform. For example, if the PUSCH has 4 repetitions and Y=2, the first and second repetitions may use DFT-S-OFDM, and the third and fourth repetitions may use CP-OFDM. This allows some repetitions to benefit from the low PAPR offered by DFT-S-OFDM. At the same time, since the use of DFT-S-OFDM requires a contiguous set of resource blocks (i.e., a set of resources that is contiguous in the frequency domain), the use of CP-OFDM (which does not require a contiguous set of resource blocks) for the remaining repetitions means that the frequency resources used for these remaining repetitions may be fragmented. This allows for more flexible use of frequency resources. For example, the scheduler may have contiguous resources available in the first Y iterations (these contiguous resources are suitable for DFT-S-OFDM), but only non-contiguous resources available in the next iteration (or it is not yet known whether the available resources are contiguous or non-contiguous). In this case, the network can schedule DFT-S-OFDM in the Y iterations that are known to be contiguous, and schedule CP-OFDM in the other iterations.

[0053] In one embodiment, alternating waveforms can be used for the repeated transmission sets. For example, the first M repetitions use DFT-S-OFDM, the next N repetitions use CP-OFDM, the next M repetitions use DFT-S-OFDM, etc. M and N can be the same value. In the example, M=N=1, so a different waveform is used for each alternating repetition.

[0054] In the current specification, there are four PUCCH resource sets. Each set contains a list of 8 or 32 PUCCH resources that the UE can use to carry UCI (uplink control information), such as SR (scheduling request), CSI (channel state information) and HARQ-ACK / NACK. The UE determines the PUCCH resource set, and the PRI is used to indicate which of the 8 or 32 PUCCH resources in the determined PUCCH resource set the UE should use. The PUCCH resource set is determined using the total number of UCI bits that the UE needs to transmit in one PUCCH. In one embodiment, each PUCCH resource set is also associated with a waveform. Thus, by determining the PUCCH resource set, the UE also knows which waveform to use for the PUCCH. As an example, it should be noted that some PUCCH formats, such as format 0 and 1, use sequence-based waveforms, so that the associated waveforms (DFT-S-OFDM or CP-OFDM) are not applicable for these PUCCH formats. Therefore, the waveform (DFT-S-OFDM or CP-OFDM) associated with a PUCCH resource set is only applied to those PUCCH resources in the set that do not use PUCCH formats 0 or 1.

[0055] Semi-persistent UL waveform

[0056] In semi-persistent indication of UL waveforms, the indication provides the UE with, for example, a waveform or a timetable of which waveform to use in which OFDM symbols, thereby reducing the amount of signaling required (e.g., compared to when the waveform is signaled using a DL or UL grant).

[0057] In the current specification, the Slot Format Indicator (SFI) carried by the Group Common DCI (GC-DCI) can change the FL symbol (flexible symbol) to either DL or UL symbol (see 3GPP Release 17). In one embodiment, additional information is added to the SFI to indicate the change of waveform to DFT-S-OFDM or CP-OFDM. The GC-DCI carrying the new SFI can, for example, use a different RNTI (e.g., mask its CRC) than the GC-DCI carrying the legacy SFI. The new SFI provides the UE with a time pattern indicating which waveform to use for which symbol.

[0058] It should be noted that the SFIs mentioned above are either new SFIs carrying both 3GPP Release 17 information and waveform (DFT-S-OFDM vs. CP-OFDM) information or new additional SFIs carrying only waveform (DFT-S-OFDM vs. CP-OFDM) information. When the new additional SFI is used, the UE combines the information of the legacy (3GPP Release 17) SFI and the additional SFI to determine whether a given slot is UL or DL ​​from the legacy SFI and to determine the waveform from the new additional SFI. The information of the SFI can be applied on a slot-by-slot basis or to all slots to which the SFI applies. For example, one bit of the SFI can indicate whether all UL symbols in the slot to which the SFI applies (or all UL and FL symbols in the slot) should use CP-OFDM or DFT-S-OFDM.

[0059] In an embodiment, different UEs are configured to monitor different GC-DCIs carrying SFIs. For example, a cell-center UE may be configured to monitor a legacy GC-DCI whose waveform is not dynamically changed between DFT-s-OFDM and CP-OFDM. Meanwhile, a cell-edge UE may be configured to monitor a GC-DCI carrying an SFI that allows dynamic switching between DFT-s-OFDM and CP-OFDM. Cell-center UEs and cell-edge UEs can be differentiated, for example, by configuring an RSRP threshold (e.g., such that a UE measuring an RSRP below the threshold is considered a cell-edge UE, and a UE measuring an RSRP above the threshold is considered a cell-center UE).

[0060] The activation DCI is used to activate a type 2 CG-PUSCH or an SPS PDSCH. When activated, the UE is provided with a periodic PUSCH resource of the CG-PUSCH or a periodic PDSCH resource of the SPS PDSCH. In one embodiment, the activation DCI also indicates the waveform that the UE should use for UL transmission. That is, the activation DCI for type 2 CG-PUSCH indicates the waveform of the activated CG-PUSCH, and the activation DCI for SPS PDSCH indicates the waveform to use for the corresponding PUCCH carrying HARQ-ACK / NACK of the SPS PDSCH.

[0061] In NR, a UE can be configured with multiple DL and UL Bandwidth Parts (BWPs). Up to four BWPs can be configured for each DL and UL direction, and only one BWP for each direction can be active at a given time. Activation can be done, for example, by the network scheduling PDCCH, bwp inactivity timer, RRC signaling, or the MAC (medium access control) entity at the start of a random access procedure indicating a downlink assignment or uplink grant to a particular BWP. BWPs are described, for example, in 3GPP TS 2011-01-13213 (2011).

[0062] In an embodiment, a particular BWP may be associated with either a DFT-S-OFDM waveform or a CP-OFDM waveform, meaning that the symbols and slots within that BWP are assigned to either the DFT-S-OFDM waveform or the CP-OFDM waveform.

[0063] For scheduling, the network can dynamically (e.g., via DCI) assign a BWP denoted as "DFT-S-OFDM" to cell edge UEs. However, for non-cell edge UEs, the network can instruct the UE to use a BWP denoted as "CP-OFDM". Thus, by assigning the UL BWP to either (1) a DFT-S-OFDM UL BWP or (2) a CP-OFDM UL BWP and using the dynamic BWP switching mechanism of previous 3GPP releases, it is possible to dynamically switch between DFT-S-OFDM and CP-OFDM with minimal impact to the specifications.

[0064] In the current specification, when a UE switches from one BWP to another, there is a stabilization time due to frequency separation, which the UE must take into account (known as BWP switching time). In one embodiment, two BWPs can be mapped to the same frequency resource, one BWP is used for DFT-S-OFDM and the other BWP is used for CP-OFDM. When moving from a BWP using CP-OFDM to a BWP using DFT-S-OFDM (or vice versa), the UE does not change frequency resources, so no BWP switching time is required or the BWP switching time can be reduced. Thus, faster BWP switching can be achieved (resulting in less delay). Also, the difference between the two BWPs is the waveform configuration, but other parameters of the two BWPs may also be different.

[0065] Semi-static flexible display

[0066] In semi-static flexible indication, the UE is semi-statically provided (e.g., via RRC signaling) with a predefined time pattern from which the UE knows which waveform to use in which OFDM symbol without further dynamic signaling. In NR, a slot format is an arrangement of OFDM symbols within a slot, and each OFDM symbol (sometimes simply called a "symbol") can be configured as "downlink" (DL), "flexible" (F / FL), or "uplink" (UL). The UE receives in DL symbols and transmits in UL symbols. FL symbols can be further instructed to be used in DL or UL, as appropriate.

[0067] In the current specification, for the slot format configuration, a table is defined that contains different combinations of DL, UL, and FL symbols in a slot, as in Section 11.1.1 of Non-Patent Document 5. This table is shown in Table 3. [Table 3]

[0068] From Table 3, it can be seen that a UL symbol can be used for either a DFT-S-OFDM waveform or a CP-OFDM waveform. The waveforms are semi-statically configured as above. However, in an embodiment, to support waveform switching between DFT-S-OFDM and CP-OFDM, the above table is updated to include additional information added to each UL symbol of the existing slot format to indicate whether the symbol can be used only for a DFT-S-OFDM waveform or a CP-OFDM waveform.

[0069] An example is shown in Table 4 (based on a truncated version of Table 3 for brevity). As can be seen for slot format 1 and slot format 48, the uplink symbol "U" is replaced with either "U_DFT" or "U_CP" to indicate whether each UL symbol should be used for a DFT-S-OFDM waveform or a CP-OFDM waveform, respectively. [Table 4]

[0070] In another embodiment, some of the reserved formats, e.g., slot format 56-254, are used to indicate whether the UE should use DFT-S-OFDM or CP-OFDM, where, for example, existing formats, i.e., slot formats 0-55, use an RRC configured waveform (configured per UE), whereas new entries (in slot formats 56-254) use DFT-S-OFDM or CP-OFDM depending on the format index and an indication of "U_DFT" or "U_CP" for each UL symbol associated with that format index.

[0071] The slot format signaling indication indicating the use of DFT-S-OFDM or CP-OFDM for each UL symbol can be semi-statically configured, for example by reusing the existing tdd-UL-DL-Configuration Common or tdd-UL-DL-Configuration Dedicated from higher layers.

[0072] Furthermore, when used for UL, FL symbols can use either waveform, and the network can provide signaling indicating whether such FL symbols use DFT-S-OFDM or CP-OFDM for UL transmission. For example, a scheduling DCI is used to indicate that a FL symbol is changed to a UL symbol and additionally indicates the waveform employed to perform the UL transmission. In another example, an existing GC-DCI carrying a slot format indicator (SFI) can be used to dynamically indicate that a FL symbol is changed to a UL symbol and additionally indicates the waveform employed to perform the UL transmission. The network can, for example, dynamically schedule symbols labeled "U_DFT" (corresponding to a DFT-S-OFDM waveform) for cell edge UEs and dynamically schedule symbols labeled "U_CP" (corresponding to a CP-OFDM waveform) for non-cell edge UEs.

[0073] Thus, as described, the FL symbol(s) associated with the SFI indicated by the GC-DCI may be changed to an UL symbol and the use of DFT-S-OFDM or CP-OFDM for uplink transmission may be specified. In an embodiment, the semi-static slot format configuration is maintained (so that each symbol is semi-statically configured as DL, UL or FL). However, a new SFI configuration or a new DCI is used to change the UL and FL symbols to UL using CP-OFDM or DFT-S-OFDM. The GC-DCI carrying the new SFI may use a different RNTI (e.g., mask the CRC) than the GC-DCI carrying the legacy SFI.

[0074] In an embodiment, the granularity of the waveform indication can be greater than the symbol level. For example, all UL symbols in a slot can be assigned by the network to either DFT-S-OFDM or CP-OFDM. As illustrated in Table 5, all uplink symbols with a "U" in slot format 1 are assigned to "U_CP" (indicating that CP-OFDM should be used for all UL symbols in the slot), and all uplink symbols with a "U" in slot format 48 are assigned to "U_DFT" (indicating that DFT-S-OFDM should be used for all UL symbols in the slot). [Table 5]

[0075] In another example, the signaling is indicated per slot (rather than per symbol as in Table 5) in one or more radio frames. This is illustrated in Table 6, where an additional column is added to indicate whether DFT-S-OFDM or CP-OFDM should be applied to the UL symbols of each slot. This provides another way of indicating, for example, that CP-OFDM should be used for all UL symbols in a slot with slot format 1 and DFT-S-OFDM should be used for all UL symbols in a slot with slot format 48. [Table 6]

[0076] In an embodiment, for scheduling, the network may dynamically assign slot formats labeled "DFT-S-OFDM" to cell-edge UEs and "CP-OFDM" to non-cell-edge UEs (again, each UE is determined as cell-edge or non-cell-edge based, for example, on the UE's RSRP measurements and RSRP thresholds). In one embodiment, the network can schedule both cell-edge and non-cell-edge UEs with DFT-S-OFDM. This can help provide improved coverage for both UE types, for example, when both UE types have urgent data.

[0077] While the examples in Tables 4 through 6 have shown the reassignment of existing slot format indicators (i.e., SFI=0-55) to include a mix of CP-OFDM and DFT-S-OFDM UL waveforms, new rows in the SFI table (i.e., SFI=56-254) could also be used. For example, according to the set of slot formats shown in Table 7 below, if the UE is signaled to use SFI=1, it will transmit using CP-OFDM in the UL, and if the UE is signaled to use SFI=56, it will transmit using DFT-S-OFDM in the UL. This allows for different slot formats (using different SFIs) with the same composition of DL, UL and FL symbols, but differentiated by the use of either CP-OFDM or DFT-S-OFDM. [Table 7]

[0078] In an embodiment, the UE may be signaled an SFI that includes symbols configured for CP-OFDM and other symbols configured for DFT-S-OFDM, and thus the UE has different options regarding which CP-OFDM or DFT-S-OFDM symbols to use for UL transmission in a slot.

[0079] In one example, the RRC signaling indicates whether the UE should transmit using symbols indicated by the SFI as DFT-S-OFDM or CP-OFDM. This is useful, for example, for CG-PUSCH transmissions and PUSCH transmissions scheduled by compact DCI that does not specify the symbols at which the PUSCH allocation starts and stops, but rather just gives a slot-based allocation (a slot has some DFT-S-OFDM symbols and some CP-OFDM symbols indicated by the SFI).

[0080] In one example, if the RRC signals transformPrecoder in the pusch-Config as valid, the UE transmits using symbols indicated by the SFI as DFT-S-OFDM, otherwise the UE transmits using symbols indicated by the SFI as CP-OFDM.

[0081] In one example, the UE transmits using DFT-S-OFDM in symbols indicated by the SFI as DFT-S-OFDM and transmits using CP-OFDM in symbols indicated by the SFI as CP-OFDM.

[0082] For example, a single transport block can be transmitted where the transport block is mapped to both DFT-S-OFDM and CP-OFDM symbols. Multiplexing the transport block in this way interleaves the transport block across the two symbol types. This helps to provide diversity in cases where one of the "DFT-S-OFDM, CP-OFDM" is more robust than the other (e.g., the DFT-S-OFDM symbol may be more robust if it can be transmitted at a higher power or if it is transmitted as a single layer transmission).

[0083] Alternatively, a separate transport block can be transmitted in each symbol set, i.e. one transport block is transmitted in a set of DFT-S-OFDM symbols and another transport block is transmitted in a set of CP-OFDM symbols.

[0084] In one example, the UE selects whether CP-OFDM or DFT-S-OFDM is more appropriate (e.g., more likely to be reliable) and transmits in the appropriate CP-OFDM or DFT-S-OFDM symbol of the slot. For example, the UE can determine whether it is located at a cell edge or a cell center (again, e.g., by measuring RSRP and comparing it to a threshold) and based on this determine whether DFT-S-OFDM or CP-OFDM is the most appropriate waveform. Again, this is useful, e.g., for CG-PUSCH transmissions and PUSCH transmissions scheduled by compact DCI.

[0085] In one example, the DCI indicates which symbols the UE will use for PUSCH transmission. For example, the network can assign specific symbols to the UE using a Start and Length Indicator (SLIV) field in the TDRA of the DCI. The UE then transmits on those symbols using DFT-S-OFDM or CP-OFDM as appropriate, for example based on information in the slot format indicator (SFI) discussed above. The network (e.g., gNB) can signal SLIVs indicating, for example, only DFT-S-OFDM symbols or only CP-OFDM symbols. The network (e.g., gNB) may also not signal SLIVs indicating a combination of DFT-S-OFDM and CP-OFDM symbols, as this combination of different symbol types leads to inconsistencies at the UE. In one example, the UL transmission maintains the use of the waveform associated with the first symbol of the UL transmission. For example, a slot having 14 OFDM symbols can be configured such that symbols 0 to 7 are CP-OFDM and symbols 8 to 13 are DFT-S-OFDM. If PUSCH#1 is scheduled to start at symbol 6 and end at symbol 13, then PUSCH#1 will use CP-OFDM throughout (even from symbols 8 to 13) because the first symbol of PUSCH#1 is symbol 6 which is CP-OFDM.

[0086] Multiple Complex Waveform Signaling

[0087] In an embodiment, the UE is equipped with one or more different types of waveform indications. For example, the UE may be equipped with an explicit DCI indication and a semi-static flexible configuration. Thus, the UE may implement, for example, the following rules:

[0088] Symbols with semi-static configured waveforms cannot be modified by dynamic indicators (i.e., indicators related to a particular scheduled UL transmission, e.g., explicit or implicit DCI indicators) or semi-persistent indicators. Thus, only OFDM symbols that do not have a semi-static configured waveform (such as UL and FL symbols that do not have such an indication waveform) can be overwritten by a dynamic or semi-persistent configured waveform.

[0089] Symbols with semi-persistent constituent waveforms cannot be changed by the dynamic indicator, therefore only OFDM symbols that do not have a semi-persistent constituent waveform can be overwritten by a dynamic constituent waveform.

[0090] That is, the dynamic indicator can configure the waveform of any symbol except those having a semi-static or semi-persistent waveform configuration. The semi-persistent indicator can configure the waveform of any symbol except those having a semi-static waveform configuration.

[0091] 4A and 4B show a corresponding method according to an embodiment.

[0092] FIG. 4A illustrates a method performed by a wireless communication device (eg, a UE 14) according to one embodiment.

[0093] The method begins at step 400 .

[0094] In step 401, the control circuitry (e.g., controller 44) controls the communication circuitry (e.g., transmitter 49 and / or receiver 48) to receive a first wireless signal. The first wireless signal consists of a DCI (e.g., a scheduling DCI, an activation DCI, or a GC-DCI) and indicates a waveform (e.g., CP-OFDM or DFT-S-OFDM) to be used by the wireless communication device when transmitting a second wireless signal (e.g., a PUSCH or a PUCCH). In step 402, the control circuitry controls the communication circuitry to transmit the second wireless signal using the indicated waveform.

[0095] The method ends at step 403.

[0096] FIG. 4B illustrates a method performed by a wireless communication device (e.g., a TRP10, such as a gNB) according to one embodiment.

[0097] The method begins at step 404 .

[0098] In step 405, the control circuitry (e.g., the controller 34) controls the communication circuitry (e.g., the transmitter 30 and / or the receiver 32) to transmit a first wireless signal to a second wireless communication device (e.g., the UE 14). The first wireless signal comprises a DCI (e.g., a scheduling DCI, an activation DCI or a GC-DCI) indicating a waveform (e.g., CP-OFDM or DFT-S-OFDM) to be used by the second wireless communication device when transmitting a second wireless signal (e.g., a PUSCH or a PUCCH).

[0099] The method ends in step 406.

[0100] 5A and 5B show a corresponding method according to an embodiment.

[0101] FIG. 5A illustrates a method performed by a wireless communication device (eg, a UE 14) according to one embodiment.

[0102] The method begins at step 500 .

[0103] In step 501, the control circuit (e.g., the controller 44) controls the communication circuit (e.g., the transmitter 49 and / or the receiver 48) to receive a first wireless signal. The first wireless signal is configured with RRC signaling and indicates a waveform (e.g., CP-OFDM or DFT-S-OFDM) to be used by the wireless communication device when transmitting a second wireless signal (e.g., PUSCH or PUCCH). The indicated waveform is indicated based on an SFI (e.g., an SFI indicating any row of Tables 4 to 7) transmitted by the RRC signaling.

[0104] In step 502, the control circuitry controls the communications circuitry to transmit a second radio signal in a slot formatted according to the SFI using a prescribed waveform.

[0105] The method ends at step 503.

[0106] FIG. 5B illustrates a method performed by a wireless communication device (e.g., a TRP10, such as a gNB) according to one embodiment.

[0107] The method starts at step 504. In step 505, the control circuit (e.g., the controller 34) controls the communication circuit (e.g., the transmitter 30 and / or the receiver 32) to transmit a first wireless signal to a second wireless communication device (e.g., the UE 14). The first wireless signal is configured with RRC signaling and indicates a waveform (e.g., CP-OFDM or DFT-S-OFDM) to be used by the second wireless communication device when transmitting the second wireless signal (e.g., PUSCH or PUCCH). The indicated waveform is indicated based on the SFI (e.g., the SFI indicating any row of Tables 4 to 7) transmitted by the RRC signaling.

[0108] The method ends in step 506.

[0109] Thus, the present technology provides many improved ways to dynamically and / or flexibly adjust the waveform type (eg, CP-OFDM or DFT-S-OFDM) of the uplink transmission.

[0110] Embodiments of the present disclosure are defined by the following numbered clauses:

[0111] (1) 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; controlling the communication circuit to receive a first wireless signal; the first wireless signal comprises downlink control information (DCI) indicating a waveform for the wireless communication device to use when transmitting a second wireless signal; Controlling the communication circuit to transmit a second wireless signal using a command waveform. A control circuit configured as follows: A wireless communication device comprising:

[0112] (2) The wireless communication device according to (1), The command waveform is commanded by a bit included in the DCI. Wireless communication device.

[0113] (3) The wireless communication device according to (1) or (2), the DCI is an activation DCI, The wireless communication resource used to transmit the second wireless signal is a configured grant (CG) activated by the DCI, which is part of a physical uplink shared channel (PUSCH). Wireless communication device.

[0114] (4) The wireless communication device according to (1) or (2), the DCI is an activation DCI, The DCI activates a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH); The wireless communication resource used to transmit the second wireless signal is a part of a physical uplink control channel (PUCCH) for transmitting a hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the SPS PDSCH. Wireless communication device.

[0115] (5) The wireless communication device according to (1), the radio communication resource used to transmit the second radio signal is a part of a physical uplink shared channel (PUSCH) scheduled by the DCI; The instruction waveform is indicated by a time domain resource allocation (TDRA) index in the TDRA field of the DCI. Wireless communication device.

[0116] (6) The wireless communication device according to (1), The DCI schedules a physical downlink shared channel (PDSCH) and a physical uplink control channel (PUCCH) for transmitting a hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the PDSCH; the wireless communication resource used for transmitting the second wireless signal is a part of the PUCCH for transmitting the HARQ-ACK / NACK, The instruction waveform is indicated by a PUCCH resource indicator (PRI) index in the PRI field of the DCI. Wireless communication device.

[0117] (7) The wireless communication device according to (1), The command waveform is commanded based on whether the DCI is a normal DCI or a fallback DCI. Wireless communication device.

[0118] (8) The wireless communication device according to (1), The instruction waveform is instructed based on a Radio Network Temporary Identifier (RNTI) used to mask the DCI. Wireless communication device.

[0119] (9) The wireless communication device according to (1), The instruction waveform is instructed based on the number of repetitions of the transmission of the second radio signal scheduled by the DCI. Wireless communication device.

[0120] (10) The wireless communication device according to any one of (1) to (9), The control circuit controls the communication circuit, Repeatedly transmitting the second radio signal a number of times; Transmitting the second wireless signal using the instruction waveform for some of the multiple repetitions. It is configured as follows: Wireless communication device.

[0121] (11) The wireless communication device according to (10), The portion is a first transmitted portion of the plurality of repetitions. Wireless communication device.

[0122] (12) The wireless communication device according to (10) or (11), The control circuitry is configured to control the communication circuitry to alternate between transmitting the second wireless signal using the instruction waveform and transmitting the second wireless signal using another waveform over the multiple repetitions. Wireless communication device.

[0123] (13) The wireless communication device according to (1), the radio communication resource used to transmit the second radio signal is a part of a physical uplink control channel (PUCCH) scheduled by the DCI; the wireless communication resource is part of a PUCCH resource set; The instruction waveform is instructed based on the PUCCH resource set. Wireless communication device.

[0124] (14) The wireless communication device according to (1), The DCI is a group common DCI (GC-DCI). Wireless communication device.

[0125] (15) The wireless communication device according to (14), The command waveform is commanded based on a slot format indicator (SFI) carried by the GC-DCI. Wireless communication device.

[0126] (16) The wireless communication device according to (15), The GC-DCI carrying the SFI for which the instruction waveform is indicated is a first type GC-DCI; The first type of GC-DCI has characteristics that distinguish it from a second type of GC-DCI that does not command the command waveform. Wireless communication device.

[0127] (17) The wireless communication device according to (16), The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

[0128] (18) The wireless communication device according to (1), The command waveform is commanded based on an activation bandwidth portion BWP. Wireless communication device.

[0129] (19) The wireless communication device according to (18), The command waveform is commanded by activation of a first BWP; Another waveform is commanded by the activation of a second BWP, The first and second BWPs are mapped to the same frequency resource. Wireless communication device.

[0130] (20) The wireless communication device according to any one of (1) to (19), The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

[0131] (twenty one) 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; controlling the communication circuit to receive a first wireless signal; the first wireless signal comprises radio resource control (RRC) signaling indicating a waveform for use by the wireless communication device when transmitting a second wireless signal; The indication waveform is indicated based on a slot format indicator (SFI) carried by the RRC signaling; Using the instruction waveform, control the communication circuitry to transmit the second radio signal in a slot formatted according to the SFI. A control circuit configured as follows: A wireless communication device comprising:

[0132] (twenty two) The wireless communication device according to (21), The command waveform is commanded for each symbol. Wireless communication device.

[0133] (twenty three) The wireless communication device according to (21), The command waveform is commanded for each slot. Wireless communication device.

[0134] (twenty four) The wireless communication device according to any one of (21) to (23), The slot format indicated by the SFI comprises one or more flexible symbols that can be updated to an uplink symbol for use in the indicated waveform. Wireless communication device.

[0135] (twenty five) The wireless communication device according to (24), The flexible symbols of the slot format indicated by the SFI are updatable based on scheduling downlink control information (DCI). Wireless communication device.

[0136] (26) The wireless communication device according to (24), The flexible symbols of the slot format indicated by the SFI are updatable based on Group Common Downlink Control Information (GC-DCI). Wireless communication device.

[0137] (27) The wireless communication device according to (26), the GC-DCI carries a new SFI indicating a new slot format; the new slot format indicated by the new SFI is the slot format indicated by the SFI carried by the RRC signaling; The one or more flexible symbols are updated to uplink symbols for use with the instruction waveform. Wireless communication device.

[0138] (28) The wireless communication device according to (27), the GC-DCI carrying the new SFI is indicated by a GC-DCI of a first type; The first type of GC-DCI has characteristics that distinguish it from a second type of GC-DCI that does not exhibit the new SFI. Wireless communication device.

[0139] (29) The wireless communication device according to (28), The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

[0140] (30) The wireless communication device according to any one of (21) to (29), a first uplink symbol of the formatted slot is for use with a first instruction waveform; A second uplink symbol of the formatted slot is for use with a second waveform. Wireless communication device.

[0141] (31) The wireless communication device according to (30), The second wireless signal is transmitted using the first uplink symbol or the second uplink symbol based on RRC signaling received by the communication circuit. Wireless communication device.

[0142] (32) The wireless communication device according to (30), The second radio signal transmits a transport block mapped to both the first and second uplink symbols. Wireless communication device. (33)

[0143] The wireless communication device according to (30), The second radio signal transmits a transport block mapped to only one of the first and second uplink symbols. Wireless communication device.

[0144] (34) The wireless communication device according to (30), The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on a location of the wireless communication device. Wireless communication device.

[0145] (35) The wireless communication device according to (30), The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on the downlink control information DCI received by the communication circuit. Wireless communication device.

[0146] (36) The wireless communication device according to (35), When a first portion of the second radio signal is transmitted using the first uplink symbol, the second radio signal is transmitted using the first instruction waveform; When a first portion of the second radio signal is transmitted using the second uplink symbol, the second radio signal is transmitted using the second instruction waveform. Wireless communication device.

[0147] (37) The wireless communication device according to any one of (21) to (36), The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

[0148] (38) 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; a control circuit configured to control the communication circuit to transmit a first wireless signal to a second wireless communication device; Equipped with The first wireless signal is comprised of downlink control information (DCI) that indicates a waveform to be used by the second wireless communication device when transmitting a second wireless signal. Wireless communication device.

[0149] (39) The wireless communication device according to (38), The command waveform is commanded by a bit included in the DCI. Wireless communication device.

[0150] (40) The wireless communication device according to (38) or (39), the DCI is an activation DCI, The wireless communication resource used to transmit the second wireless signal is a configured grant (CG) activated by the DCI, which is part of a physical uplink shared channel (PUSCH). Wireless communication device.

[0151] (41) The wireless communication device according to (38) or (39), The DCI is an activation DCI, The DCI activates semi-persistent scheduling (SPS), a physical downlink shared channel (PDSCH), The wireless communication resource used to transmit the second wireless signal is a part of a physical uplink control channel (PUCCH) for carrying a hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the SPS PDSCH. Wireless communication device.

[0152] (42) The wireless communication device according to (38), the radio communication resource used to transmit the second radio signal is a part of a physical uplink shared channel (PUSCH) scheduled by the DCI; The indication waveform is indicated by a time domain resource allocation (TDRA) index in the TDRA field of the DCI. Wireless communication device.

[0153] (43) The wireless communication device according to (38), The DCI schedules a physical downlink shared channel (PDSCH) and a physical uplink control channel (PUCCH) for transmitting a hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the PDSCH; the wireless communication resource used for transmitting the second wireless signal is a portion of the PUCCH for transmitting the HARQ feedback; The indication waveform is indicated by a PUCCH resource indicator (PRI) index in the PRI field of the DCI. Wireless communication device.

[0154] (44) The wireless communication device according to (38), The command waveform is commanded based on whether the DCI is a normal DCI or a fallback DCI. Wireless communication device.

[0155] (45) The wireless communication device according to (38), The instruction waveform is instructed based on a Radio Network Temporary Identifier (RNTI) used to mask the DCI. Wireless communication device.

[0156] (46) The wireless communication device according to (38), The instruction waveform is instructed based on the number of repetitions of the transmission of the second radio signal scheduled by the DCI. Wireless communication device.

[0157] (47) The wireless communication device according to any one of (38) to (46), the second radio signal is repeatedly transmitted a number of times; A portion of the plurality of repetitions are transmitted using the instruction waveform. Wireless communication device.

[0158] (48) The wireless communication device according to (47), The portion is a first transmitted portion of the plurality of repetitions. Wireless communication device.

[0159] (49) The wireless communication device according to (47) or (48), The second radio signal is transmitted alternately using the instruction waveform and using another waveform over the multiple repetitions. Wireless communication device.

[0160] (50) The wireless communication device according to (38), the radio communication resource used to transmit the second radio signal is a part of a physical uplink control channel (PUCCH) scheduled by the DCI; the wireless communication resource is part of a PUCCH resource set; The instruction waveform is instructed based on the PUCCH resource set. Wireless communication device.

[0161] (51) The wireless communication device according to (38), The DCI is a group common DCI (GC-DCI). Wireless communication device.

[0162] (52) The wireless communication device according to (51), The command waveform is commanded based on a slot format indicator (SFI) carried by the GC-DCI. Wireless communication device.

[0163] (53) The wireless communication device according to (52), The GC-DCI carrying the SFI for which the instruction waveform is indicated is a first type GC-DCI; The first type of GC-DCI has characteristics that distinguish it from a second type of GC-DCI that does not command the command waveform. Wireless communication device.

[0164] (54) The wireless communication device according to (53), The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

[0165] (55) The wireless communication device according to (38), The command waveform is commanded based on an activation bandwidth portion (BWP). Wireless communication device.

[0166] (56) The wireless communication device according to (55), The command waveform is commanded by activation of a first BWP; Another waveform is commanded by the activation of a second BWP, The first and second BWPs are mapped to the same frequency resource. Wireless communication device.

[0167] (57) The wireless communication device according to (38) or (56), The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

[0168] (58) 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; a control circuit configured to control the communication circuit to transmit a first wireless signal to a second wireless communication device; Equipped with the first wireless signal comprises radio resource control (RRC) signaling indicating a waveform to be used by the second wireless communication device when transmitting a second wireless signal; The indication waveform is indicated based on a slot format indicator (SFI) carried by the RRC signaling. Wireless communication device.

[0169] (59) The wireless communication device according to (58), The command waveform is commanded for each symbol. Wireless communication device.

[0170] (60) The wireless communication device according to (58), The command waveform is commanded for each slot. Wireless communication device.

[0171] (61) The wireless communication device according to any one of (58) to (60), The slot format indicated by the SFI comprises one or more flexible symbols that can be updated to an uplink symbol for use in the indicated waveform. Wireless communication device.

[0172] (62) The wireless communication device according to (61), The flexible symbols of the slot format indicated by the SFI are updatable based on downlink control information (DCI) during scheduling. Wireless communication device.

[0173] (63) The wireless communication device according to (61), The flexible symbols of the slot format indicated by the SFI are updatable based on Group Common Downlink Control Information (GC-DCI). Wireless communication device.

[0174] (64) The wireless communication device according to (63), the GC-DCI carries a new SFI indicating a new slot format; the new slot format indicated by the new SFI is the slot format indicated by the SFI carried by the RRC signaling; The one or more flexible symbols are updated to uplink symbols for use with the instruction waveform. Wireless communication device.

[0175] (65) The wireless communication device according to (64), the GC-DCI carrying the new SFI is indicated by the first type of GC-DCI; The first type of GC-DCI has characteristics that distinguish it from a second type of GC-DCI that does not exhibit the new SFI. Wireless communication device.

[0176] (66) The wireless communication device according to (65), The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

[0177] (67) The wireless communication device according to any one of (58) to (66), a first uplink symbol of the formatted slot is for use with a first instruction waveform; A second uplink symbol of the formatted slot is for use with a second waveform. Wireless communication device.

[0178] (68) The wireless communication device according to (67), The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on RRC signaling transmitted by the communication circuit to the second wireless communication device. Wireless communication device.

[0179] (69) The wireless communication device according to (67), The second radio signal is transmitted in a transport block that is mapped to both the first and second uplink symbols. Wireless communication device.

[0180] (70) The wireless communication device according to (67), The second radio signal is transmitted in a transport block that is mapped to only one of the first and second uplink symbols. Wireless communication device.

[0181] (71) The wireless communication device according to (67), The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on a location of the wireless communication device. Wireless communication device.

[0182] (72) The wireless communication device according to (67), The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on downlink control information DCI transmitted to the second radio communication device by the communication circuit. Wireless communication device.

[0183] (73) The wireless communication device according to (72), When a first portion of the second radio signal is transmitted using the first uplink symbol, the second radio signal is transmitted using the first instruction waveform; When a first portion of the second radio signal is transmitted using the second uplink symbol, the second radio signal is transmitted using the second instruction waveform. Wireless communication device.

[0184] (74) The wireless communication device according to any one of (58) to (73), The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

[0185] (75) 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to receive a first wireless signal; the first radio signal comprises downlink control information (DCI); indicating a waveform for the wireless communication device to use when transmitting a second wireless signal; Transmitting the second radio signal using the instruction waveform. method.

[0186] (76) 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to receive a first wireless signal; the first wireless signal comprises radio resource control (RRC) signaling indicating a waveform for the wireless communication device to use when transmitting a second wireless signal; The instruction waveform is instructed based on a slot format indicator (SFI) carried in the RRC signaling; Transmitting the second radio signal in a slot formatted according to the SFI using the instruction waveform. method.

[0187] (77) 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to transmit a first wireless signal to a second wireless communication device; The first wireless signal is comprised of downlink control information (DCI) that indicates a waveform to be used by the second wireless communication device when transmitting a second wireless signal. method.

[0188] (78) 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to transmit a first wireless signal to a second wireless communication device; the first wireless signal comprises radio resource control (RRC) signaling indicating a waveform to be used by the second wireless communication device when transmitting a second wireless signal; The indication waveform is indicated based on a slot format indicator (SFI) carried by the RRC signaling. method.

[0189] (79) A program for controlling a computer to execute the method according to any one of (75) to (78) above.

[0190] (80) A storage medium storing the program described in (79) above.

[0191] Numerous modifications and variations of the present disclosure are possible in light of the above teachings. It is therefore understood that, within the scope of the claims, the present disclosure may be implemented in ways other than as specifically described herein. To the extent that embodiments of the present disclosure have been described as being implemented, at least in part, by one or more software-controlled information processing devices, it will be understood that machine-readable media (especially non-transitory machine-readable media) bearing such software, such as optical disks, magnetic disks, semiconductor memories, and the like, are also considered to represent embodiments of the present disclosure. In particular, the present disclosure should be understood to include non-transitory storage media that include code elements that cause a computer to perform any of the disclosed methods.

[0192] It will be appreciated that for clarity the above description has described the embodiments with reference to different functional units, circuits and / or processors. However, it will be apparent that any suitable distribution of functionality between different functional units, circuits and / or processors may be used without deviating from the embodiments.

[0193] The described embodiments may be implemented in any suitable form including hardware, software, firmware or any combination of these. The described embodiments may optionally be implemented at least in part as computer software running on one or more computer processors (e.g., data processors and / or digital signal processors). The elements and components of any embodiment may be physically, functionally and logically implemented in any suitable way. Indeed functionality may be implemented in a single unit, in multiple units or as part of other functional units. Thus, the disclosed embodiments may be implemented in a single unit or may be physically and functionally distributed between different units, circuits and / or processors.

[0194] Although the present disclosure has been described in conjunction with several embodiments, it is not intended to be limited to these embodiments. Moreover, while certain features may appear to be described in conjunction with particular embodiments, those skilled in the art will recognize that the various features of the described embodiments can be combined in any manner suitable for practicing the present disclosure.

Claims

1. 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; controlling the communication circuit to receive a first wireless signal; the first wireless signal is comprised of downlink control information (DCI) indicating a waveform for the wireless communication device to use when transmitting a second wireless signal; Controlling the communication circuit to transmit a second wireless signal using a command waveform. A control circuit configured as follows: A wireless communication device comprising:

2. 2. The wireless communication device according to claim 1, The instruction waveform is indicated by a bit included in the DCI. Wireless communication device.

3. 2. The wireless communication device according to claim 1, the DCI is an activation DCI, The radio communication resource used to transmit the second radio signal is a part of a configured grant (CG), a physical uplink shared channel (PUSCH), activated by the DCI. Wireless communication device.

4. 2. The wireless communication device according to claim 1, the DCI is an activation DCI, The DCI activates a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH); The wireless communication resource used to transmit the second wireless signal is a part of a physical uplink control channel (PUCCH) for transmitting a hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the SPS PDSCH. Wireless communication device.

5. 2. The wireless communication device according to claim 1, the radio communication resource used for transmitting the second radio signal is a part of a physical uplink shared channel (PUSCH) scheduled by the DCI; The instruction waveform is indicated by a time domain resource allocation (TDRA) index in the TDRA field of the DCI. Wireless communication device.

6. 2. The wireless communication device according to claim 1, The DCI schedules a physical downlink shared channel (PDSCH) and a physical uplink control channel (PUCCH) for transmitting hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the PDSCH; the radio communication resource used for transmitting the second radio signal is a part of the PUCCH for transmitting the HARQ-ACK / NACK; The instruction waveform is indicated by a PUCCH resource indicator (PRI) index in the PRI field of the DCI. Wireless communication device.

7. 2. The wireless communication device according to claim 1, The instruction waveform is instructed based on whether the DCI is a normal DCI or a fallback DCI. Wireless communication device.

8. 2. The wireless communication device according to claim 1, The instruction waveform is instructed based on a Radio Network Temporary Identifier (RNTI) used to mask the DCI. Wireless communication device.

9. 2. The wireless communication device according to claim 1, The instruction waveform is instructed based on the number of repetitions of the transmission of the second radio signal scheduled by the DCI. Wireless communication device.

10. 2. The wireless communication device according to claim 1, The control circuit controls the communication circuit, Repeatedly transmitting the second radio signal a number of times; Transmitting the second wireless signal using the instruction waveform for some of the multiple repetitions. It is configured as follows: Wireless communication device.

11. 11. The wireless communication device according to claim 10, The portion is a first transmitted portion of the plurality of repetitions. Wireless communication device.

12. 11. The wireless communication device according to claim 10, The control circuitry is configured to control the communication circuitry to alternate between transmitting the second wireless signal using the instruction waveform and transmitting the second wireless signal using another waveform during the multiple repetitions. Wireless communication device.

13. 2. The wireless communication device according to claim 1, the radio communication resource used for transmitting the second radio signal is a part of a physical uplink control channel (PUCCH) scheduled by the DCI; the wireless communication resource is part of a PUCCH resource set; The instruction waveform is instructed based on the PUCCH resource set. Wireless communication device.

14. 2. The wireless communication device according to claim 1, The DCI is a group common DCI (GC-DCI). Wireless communication device.

15. 15. The wireless communication device of claim 14, The instruction waveform is instructed based on a slot format indicator (SFI) carried by the GC-DCI. Wireless communication device.

16. 16. The wireless communication device of claim 15, The GC-DCI carrying the SFI for which the indication waveform is indicated is a first type of GC-DCI; The first type of GC-DCI has a characteristic that distinguishes it from a second type of GC-DCI that does not indicate the indicated waveform. Wireless communication device.

17. 17. The wireless communication device of claim 16, The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

18. 2. The wireless communication device according to claim 1, The command waveform is commanded based on an activation bandwidth portion BWP. Wireless communication device.

19. 20. The wireless communication device of claim 18, The command waveform is commanded by activation of a first BWP; Another waveform is dictated by activation of a second BWP, The first and second BWPs are mapped to the same frequency resource. Wireless communication device.

20. 2. The wireless communication device according to claim 1, The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

21. 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; controlling the communication circuit to receive a first wireless signal; the first wireless signal is comprised of Radio Resource Control (RRC) signaling indicating a waveform for use by the wireless communication device when transmitting a second wireless signal; The indication waveform is indicated based on a slot format indicator (SFI) carried by the RRC signaling; Using the instruction waveform, control the communication circuitry to transmit the second radio signal in a slot formatted according to the SFI. A control circuit configured as follows: A wireless communication device comprising:

22. 22. The wireless communication device of claim 21, The command waveform is commanded for each symbol. Wireless communication device.

23. 22. The wireless communication device of claim 21, The command waveform is commanded for each slot. Wireless communication device.

24. 22. The wireless communication device of claim 21, The slot format indicated by the SFI comprises one or more flexible symbols that can be updated to an uplink symbol for use in the indicated waveform. Wireless communication device.

25. 25. The wireless communication device of claim 24, The flexible symbols of the slot format indicated by the SFI are updatable based on scheduling downlink control information (DCI). Wireless communication device.

26. 25. The wireless communication device of claim 24, The flexible symbols of the slot format indicated by the SFI are updatable based on Group Common Downlink Control Information (GC-DCI). Wireless communication device.

27. 27. The wireless communication device of claim 26, The GC-DCI carries a new SFI indicating a new slot format; the new slot format indicated by the new SFI is the slot format indicated by the SFI carried by the RRC signaling, The one or more flexible symbols are updated to uplink symbols for use with the instruction waveform. Wireless communication device.

28. 28. A wireless communication device according to claim 27, the GC-DCI carrying the new SFI is indicated by a GC-DCI of a first type; The first type of GC-DCI has a characteristic that distinguishes it from a second type of GC-DCI that does not indicate the new SFI. Wireless communication device.

29. 29. The wireless communication device of claim 28, The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

30. 22. The wireless communication device of claim 21, a first uplink symbol of the formatted slot is for use with a first instruction waveform; A second uplink symbol of the formatted slot is for use with a second waveform. Wireless communication device.

31. 31. The wireless communication device of claim 30, The second wireless signal is transmitted using the first uplink symbol or the second uplink symbol based on RRC signaling received by the communication circuit. Wireless communication device.

32. 31. The wireless communication device of claim 30, The second radio signal transmits a transport block mapped to both the first and second uplink symbols. Wireless communication device.

33. 31. The wireless communication device of claim 30, The second radio signal transmits a transport block mapped to only one of the first and second uplink symbols. Wireless communication device.

34. 31. The wireless communication device of claim 30, The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on a location of the wireless communication device. Wireless communication device.

35. 31. The wireless communication device of claim 30, The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on the downlink control information DCI received by the communication circuit. Wireless communication device.

36. 36. The wireless communication device of claim 35, when a first portion of the second radio signal is transmitted using the first uplink symbol, the second radio signal is transmitted using the first instruction waveform; When a first portion of the second radio signal is transmitted using the second uplink symbol, the second radio signal is transmitted using the second instruction waveform. Wireless communication device.

37. 22. The wireless communication device of claim 21, The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

38. 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; a control circuit configured to control the communication circuit to transmit a first wireless signal to a second wireless communication device; Equipped with The first wireless signal is comprised of downlink control information (DCI) that indicates a waveform to be used by the second wireless communication device when transmitting a second wireless signal. Wireless communication device.

39. 39. The wireless communication device of claim 38, The instruction waveform is indicated by a bit included in the DCI. Wireless communication device.

40. 39. The wireless communication device of claim 38, the DCI is an activation DCI, The radio communication resource used to transmit the second radio signal is part of a configured grant (CG), a physical uplink shared channel (PUSCH), activated by the DCI. Wireless communication device.

41. 39. The wireless communication device of claim 38, The DCI is an activation DCI, The DCI activates Semi-Persistent Scheduling (SPS), a Physical Downlink Shared Channel (PDSCH), The radio communication resource used to transmit the second radio signal is a part of a physical uplink control channel (PUCCH) for carrying hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the SPS PDSCH. Wireless communication device.

42. 39. The wireless communication device of claim 38, the radio communication resource used for transmitting the second radio signal is a part of a physical uplink shared channel (PUSCH) scheduled by the DCI; The indicated waveform is indicated by a Time Domain Resource Allocation (TDRA) index in the TDRA field of the DCI. Wireless communication device.

43. 39. The wireless communication device of claim 38, The DCI schedules a physical downlink shared channel (PDSCH) and a physical uplink control channel (PUCCH) for transmitting hybrid automatic repeat request feedback (HARQ-ACK / NACK) for the PDSCH; the radio communication resource used for transmitting the second radio signal is a part of the PUCCH for transmitting the HARQ feedback; The indication waveform is indicated by a PUCCH resource indicator (PRI) index of a PRI field of the DCI. Wireless communication device.

44. 39. The wireless communication device of claim 38, The instruction waveform is instructed based on whether the DCI is a normal DCI or a fallback DCI. Wireless communication device.

45. 39. The wireless communication device of claim 38, The instruction waveform is instructed based on a Radio Network Temporary Identifier (RNTI) used to mask the DCI. Wireless communication device.

46. 39. The wireless communication device of claim 38, The instruction waveform is instructed based on the number of repetitions of the transmission of the second radio signal scheduled by the DCI. Wireless communication device.

47. 39. The wireless communication device of claim 38, the second radio signal is repeatedly transmitted a plurality of times; A portion of the plurality of repetitions are transmitted using the instruction waveform. Wireless communication device.

48. 48. A wireless communication device as claimed in claim 47, comprising: The portion is a first transmitted portion of the plurality of repetitions. Wireless communication device.

49. 48. A wireless communication device as claimed in claim 47, comprising: The second radio signal is transmitted alternately using the instruction waveform and using another waveform over the multiple repetitions. Wireless communication device.

50. 39. The wireless communication device of claim 38, the radio communication resource used for transmitting the second radio signal is a part of a physical uplink control channel (PUCCH) scheduled by the DCI; the wireless communication resource is part of a PUCCH resource set; The instruction waveform is instructed based on the PUCCH resource set. Wireless communication device.

51. 39. The wireless communication device of claim 38, The DCI is a group common DCI (GC-DCI). Wireless communication device.

52. 52. The wireless communication device of claim 51, The instruction waveform is instructed based on a slot format indicator (SFI) carried by the GC-DCI. Wireless communication device.

53. 53. The wireless communication device of claim 52, The GC-DCI carrying the SFI for which the indication waveform is indicated is a first type of GC-DCI; The first type of GC-DCI has a characteristic that distinguishes it from a second type of GC-DCI that does not indicate the indicated waveform. Wireless communication device.

54. 54. The wireless communication device of claim 53, The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

55. 39. The wireless communication device of claim 38, The command waveform is commanded based on an activation bandwidth portion (BWP). Wireless communication device.

56. 56. A wireless communication device as claimed in claim 55, The command waveform is commanded by activation of a first BWP; Another waveform is dictated by activation of a second BWP, The first and second BWPs are mapped to the same frequency resource. Wireless communication device.

57. 39. The wireless communication device of claim 38, The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

58. 1. A wireless communication device for use in a wireless communication network, comprising: a communication circuit configured to transmit or receive wireless signals; a control circuit configured to control the communication circuit to transmit a first wireless signal to a second wireless communication device; Equipped with the first wireless signal is configured with Radio Resource Control (RRC) signaling indicating a waveform to be used by the second wireless communication device when transmitting a second wireless signal; The indicated waveform is indicated based on a slot format indicator (SFI) carried by the RRC signaling. Wireless communication device.

59. 59. The wireless communication device of claim 58, The command waveform is commanded for each symbol. Wireless communication device.

60. 59. The wireless communication device of claim 58, The command waveform is commanded for each slot. Wireless communication device.

61. 59. The wireless communication device of claim 58, The slot format indicated by the SFI comprises one or more flexible symbols that can be updated to an uplink symbol for use in the indicated waveform. Wireless communication device.

62. 62. The wireless communication device of claim 61, The flexible symbols of the slot format indicated by the SFI are updatable based on downlink control information (DCI) during scheduling. Wireless communication device.

63. 62. The wireless communication device of claim 61, The flexible symbols of the slot format indicated by the SFI are updatable based on Group Common Downlink Control Information (GC-DCI). Wireless communication device.

64. 64. The wireless communication device of claim 63, The GC-DCI carries a new SFI indicating a new slot format; the new slot format indicated by the new SFI is a slot format indicated by the SFI carried by the RRC signaling, The one or more flexible symbols are updated to uplink symbols for use with the instruction waveform. Wireless communication device.

65. 65. A wireless communication device as claimed in claim 64, comprising: the GC-DCI carrying the new SFI is indicated by the first type GC-DCI; The first type of GC-DCI has a characteristic that distinguishes it from a second type of GC-DCI that does not indicate the new SFI. Wireless communication device.

66. 66. A wireless communication device as claimed in claim 65, The characteristic that distinguishes the first type of GC-DCI from the second type of GC-DCI is a Radio Network Temporary Identifier (RNTI) that is used to mask the GC-DCI. Wireless communication device.

67. 59. The wireless communication device of claim 58, a first uplink symbol of the formatted slot is for use with a first instruction waveform; A second uplink symbol of the formatted slot is for use with a second waveform. Wireless communication device.

68. 68. A wireless communication device as claimed in claim 67, comprising: The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on RRC signaling transmitted by the communication circuit to the second wireless communication device. Wireless communication device.

69. 68. A wireless communication device as claimed in claim 67, comprising: The second radio signal is transmitted in a transport block that is mapped to both the first and second uplink symbols. Wireless communication device.

70. 68. A wireless communication device as claimed in claim 67, comprising: The second radio signal is transmitted in a transport block that is mapped to only one of the first and second uplink symbols. Wireless communication device.

71. 68. A wireless communication device as claimed in claim 67, comprising: The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on a location of the wireless communication device. Wireless communication device.

72. 68. A wireless communication device as claimed in claim 67, comprising: The second radio signal is transmitted using the first uplink symbol or the second uplink symbol based on downlink control information DCI transmitted to the second radio communication device by the communication circuit. Wireless communication device.

73. 73. The wireless communication device of claim 72, when a first portion of the second radio signal is transmitted using the first uplink symbol, the second radio signal is transmitted using the first instruction waveform; When a first portion of the second radio signal is transmitted using the second uplink symbol, the second radio signal is transmitted using the second instruction waveform. Wireless communication device.

74. 59. The wireless communication device of claim 58, The instruction waveform is either a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-S-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform. Wireless communication device.

75. 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to receive a first wireless signal; the first radio signal comprises downlink control information (DCI); indicating a waveform for the wireless communication device to use when transmitting a second wireless signal; Transmitting the second radio signal using the instruction waveform method.

76. 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to receive a first wireless signal; the first wireless signal comprises Radio Resource Control (RRC) signaling indicating a waveform for the wireless communication device to use when transmitting a second wireless signal; The indication waveform is indicated based on a slot format indicator (SFI) carried in the RRC signaling; Transmitting the second radio signal in a slot formatted according to the SFI using the instruction waveform. method.

77. 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to transmit a first wireless signal to a second wireless communication device; The first wireless signal is comprised of downlink control information (DCI) that indicates a waveform to be used by the second wireless communication device when transmitting a second wireless signal. method.

78. 1. A method for controlling a wireless communication device for use in a wireless communication network, comprising: Controlling the wireless communication device to transmit a first wireless signal to a second wireless communication device; the first wireless signal is configured with Radio Resource Control (RRC) signaling indicating a waveform to be used by the second wireless communication device when transmitting a second wireless signal; The indicated waveform is indicated based on a slot format indicator (SFI) carried by the RRC signaling. method.

79. 79. A program for controlling a computer to carry out a method according to any one of claims 75 to 78.

80. A storage medium storing the program according to claim 79.

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