Apparatus, wireless communication device, and wireless communication method

Abstract

The device includes a communication unit that performs reception of a first signal or transmission of a second signal on a first frequency resource, and a control unit that determines a second frequency resource for transmission of a third signal based on the first frequency resource.

Description

Technical Field

[0001] This disclosure relates to devices, wireless communication apparatuses, and wireless communication methods. Background Technology

[0002] In NR (New Radio) (also known as "5G"), which is the successor system to LTE (Long Term Evolution), technologies are being researched to meet requirements such as high-capacity systems, high-speed data transmission, low latency, simultaneous connection of a large number of terminals, low cost, and power saving (for example, see Non-Patent Literature 1).

[0003] Furthermore, in 3GPP (registered trademark) version 18 (Rel-18), Ambient Internet of Things (A-IoT) is being researched (e.g., see Non-Patent Document 2). In Ambient Internet of Things, the target is devices with extremely simple structures for low-end IoT applications that operate with minimal power consumption.

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 38.300 V17.3.0 (2022-12)

[0007] Non-patent document 2: "Revised SID on Ambient IoT", RP-232404, 3GPP TSG RANMeeting #101, September 2023

[0008] Non-patent document 3: 3GPP TR 38.848 V1.0.0 (2023-09)

[0009] Non-patent document 4: 3GPP TS 36.211 V16.8.0 (2023-09)

[0010] Non-patent literature 5: "Study on solutions for Ambient IoT (Internet of Things) in NR", RP-234058, 3GPP TSG RAN Meeting #102, December 2023 Summary of the Invention

[0011] There is still room for research regarding the determination of resources, including frequency resources, used in communication systems that include Ambient IoT devices. Failure to properly determine resources can lead to inadequate transmission and reception channels and / or signal configuration, raising concerns about system performance degradation.

[0012] One aspect of this disclosure provides a device, a wireless communication apparatus, and a wireless communication method capable of appropriately determining the resources, including frequency resources, used for communication in a communication system comprising environmental IoT devices.

[0013] The apparatus according to one aspect of this disclosure includes: a communication unit for receiving a first signal or transmitting a second signal on a first frequency resource; and a control unit for determining a second frequency resource for transmitting a third signal based on the first frequency resource. Attached Figure Description

[0014] Figure 1 This is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure.

[0015] Figure 2 This is a diagram illustrating Topology 1.

[0016] Figure 3 This is a diagram illustrating topology 2.

[0017] Figure 4 This is a diagram illustrating topology 3 in DL-assisted programming.

[0018] Figure 5 This is a diagram illustrating topology 3 in UL-assisted programming.

[0019] Figure 6 This is a diagram illustrating topology 4.

[0020] Figure 7 This is a diagram illustrating backscattering transmission.

[0021] Figure 8 This is a diagram showing an example of a candidate topology related to CW / R2D / D2R transmission in Topology 1.

[0022] Figure 9 This is a diagram representing an example of a candidate topology related to CW / R2D / D2R transmission in Topology 2.

[0023] Figure 10 This is a diagram showing examples of the options for Proposal 1.

[0024] Figure 11 This is a diagram representing scenarios 1 to 3 of proposal 2.

[0025] Figure 12 This is a diagram representing scenarios 4 to 7 of proposal 2.

[0026] Figure 13 This is a diagram illustrating an example of proposal 3-1.

[0027] Figure 14 This is a diagram representing scenarios 1 to 3 of proposal 5.

[0028] Figure 15 This is a diagram representing scenarios 4 through 7 of proposal 5.

[0029] Figure 16 This is a block diagram illustrating an example of the structure of a base station according to an embodiment of the present disclosure.

[0030] Figure 17 This is a block diagram illustrating an example of the structure of a device involved in an embodiment of the present disclosure.

[0031] Figure 18 This is a diagram illustrating an example of the hardware structure of a base station and device involved in an embodiment of this disclosure.

[0032] Figure 19 This is a diagram illustrating an example of the structure of a vehicle according to an embodiment of this disclosure. Detailed Implementation

[0033] Hereinafter, with reference to the accompanying drawings, an embodiment of one aspect of this disclosure will be described. Furthermore, the embodiment described below is an example, and the application of this disclosure is not limited to the following embodiment.

[0034] In operating the wireless communication system according to the embodiments of this disclosure, existing technology is appropriately used. This existing technology includes, but is not limited to, existing LTE or NR. Furthermore, unless otherwise stated, the term "LTE" as used in this specification is intended to have a broad meaning encompassing LTE-Advanced and subsequent methods.

[0035] Furthermore, in the embodiments of this disclosure described below, the terms SS (synchronization signal), PSS (primary SS), SSS (secondary SS), PBCH (physical broadcast channel), PRACH (physical random access channel), PDCCH (physical downlink control channel), PDSCH (physical downlink shared channel), PUCCH (physical uplink control channel), and PUSCH (physical uplink shared channel) used in existing LTE systems are used. These are for ease of description, and the same signals, functions, etc., can also be referred to by other names. In addition, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used in NR are not necessarily explicitly written as "NR-".

[0036] Furthermore, in the embodiments of this disclosure, the duplex mode can be either TDD (Time Division Duplex), FDD (Frequency Division Duplex), or other modes (e.g., Flexible Duplex).

[0037] Furthermore, in the embodiments of this disclosure, the so-called "configured" wireless parameters can be either specific values ​​that are pre-configured or wireless parameters that are notified from base stations, devices, terminals, etc.

[0038] (Implementation Method)

[0039] Wireless Communication Systems

[0040] Figure 1 This is a diagram illustrating an example of a wireless communication system according to an embodiment of this disclosure. (See diagram for example.) Figure 1 As shown, the wireless communication system 1 includes a base station 10 and a device 20. Figure 1In this diagram, one base station 10 and one device 20 are shown, but this is just one example; multiple base stations and devices may exist. Base stations are also referred to as BS (Base Station), gNB, etc. Device 20 can also be called a terminal (UE: User Equipment), and can be an environmental IoT device that is less complex than NB-IoT (Narrow Band Internet of Things) devices. Environmental IoT devices can also be called environmental IoT terminals, environmental IoT UEs, etc.

[0041] Base station 10 is a communication device that provides one or more cells and communicates wirelessly with device 20. The physical resources of the wireless signal are defined in the time domain and frequency domain. The time domain can also be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols. The frequency domain can also be defined by the number of subcarriers or resource blocks (RBs).

[0042] Base station 10 sends control information, setting information, data, and other DL signals to device 20 in the DL (Downlink) channel. Base station 10 receives control information, information related to the processing capabilities of device 20 (device capability (information) or A-IoT capability (information); for example, capability, device capability, A-IoT capability, A-IoT device capability, etc.), data, and other UL signals from device 20 in the UP (Uplink) channel.

[0043] The channels used in transmitting DL signals include, for example, data channels and control channels. For instance, a data channel may include a Physical Downlink Shared Channel (PDSCH), and a control channel may include a Physical Downlink Control Channel (PDCCH). For example, base station 10 uses the PDCCH to transmit control information to device 20 and uses the PDSCH to transmit DL data signals to device 20. Furthermore, the PDSCH is an example of a downlink shared channel or a data channel, and the PDCCH is an example of a downlink control channel. The PDCCH can also be rewritten to transmit downlink control information (DCI), control information, etc.

[0044] As will be described later, wireless communication systems may also include intermediate nodes, assisting nodes, and / or users (UEs) (see <Device Types and Topologies> below). Additionally, "and / or" will sometimes be abbreviated as " / " below.

[0045] Device 20 is a communication device with wireless communication capabilities, as described above, and can be an environmental IoT device (e.g., a sensor). Hereinafter, environmental IoT devices are also referred to as A-IoT UE.

[0046] Device 20 receives control signals, setting information, data and other DL signals from base station 10 in DL, and sends control signals, device 20 capability information, data and other UL signals to base station 10 in UL.

[0047] The channels used in transmitting UL signals include, for example, data channels and control channels. For instance, a data channel may include a Physical Uplink Shared Channel (PUSCH), and a control channel may include a Physical Uplink Control Channel (PUCCH). For example, device 20 uses the PUCCH to transmit control information and the PUSCH to transmit UL data signals. Furthermore, the PUSCH is an example of an uplink shared channel or a data channel, and the PUCCH is an example of an uplink control channel. Additionally, the PUSCH or PUCCH can be rewritten as uplink control information (UCI), control information, etc., transmitted within the PUSCH or PUCCH.

[0048] <Environmental IoT>

[0049] In Rel-18, research related to environmental IoT that is lower-end than existing NB-IoT (e.g., refer to section 10 of Non-Patent Document 4) was approved (e.g., refer to Non-Patent Document 2). In environmental IoT, the goal is to have ultra-low power consumption and ultra-low complexity devices.

[0050] In environmental IoT, for example, for associated use cases, the following introduction scenarios and characteristics can be studied.

[0051] Indoor or outdoor environment

[0052] • Base station type, such as configuration based on macro / micro / pico cells.

[0053] • The topology involved in connectivity, such as which node—base station, user device (UE), relay, or repeater—communicates with the environmental IoT devices.

[0054] • Whether the duplex mode is TDD or FDD, and whether the frequency band is a licensed or unlicensed band.

[0055] • Coexistence with UEs and network equipment in frequency bands oriented towards existing 3GPP technologies

[0056] • Conceptualization of traffic originating from / calling to the device

[0057] Based on the aforementioned introduction scenarios and characteristics, the following RAN design goals can be formulated, for example.

[0058] Power consumption

[0059] • Complexity

[0060] • Coverage

[0061] Data rate

[0062] • Positioning accuracy

[0063] Based on the introduction scenario suitable for the associated use cases, the feasibility of meeting the design goals is compared and evaluated to determine the supported functions.

[0064] <Device Type and Topology>

[0065] Based on the results of the research project, TR 38.848 (Non-Patent Document 3) was approved. TR 38.848 investigates the following types of environmental IoT devices.

[0066] Device A: Device A does not have power (energy) storage, nor does it have independent signal generation and signal amplification functions. It performs backscattering transmission.

[0067] Device B: Device B has power storage but no independent signal generation function; it performs backscatter transmission. Device B uses the stored power to amplify the reflected signal.

[0068] Device C: Device C has power storage, independent signal generation capabilities, and active RF (radio frequency) components for transmission.

[0069] Furthermore, we envision that device A has a complexity equivalent to that of RFID (Radio Frequency Identification).

[0070] In TR 38.848, topologies 1-4 are defined in the context of environmental IoT networks.

[0071] Figure 2 This is a diagram illustrating Topology 1. For example... Figure 2 As shown, Topology 1 is the structure for communication between the base station (BS) and environmental IoT devices. The environmental IoT devices directly perform bidirectional communication with the base station.

[0072] Figure 3 This is a diagram illustrating Topology 2. For example... Figure 3 As shown, Topology 2 is a structure in which the base station and the environmental IoT device communicate via an intermediate node. The environmental IoT device performs bidirectional communication with the intermediate node configured between the base station and the environmental IoT device. The intermediate node can be, for example, a relay, an IAB (integrated access and backhaul) node, a UE, a repeater, etc.

[0073] Figure 4 This is a diagram illustrating topology 3 in DL-assisted programming. For example... Figure 4 As shown, Topology 3 is a structure that includes communication between the base station and the assistant node, communication between the assistant node and the environmental IoT device, and communication between the environmental IoT device and the base station.

[0074] Auxiliary nodes assist in deep communication. For example, such as... Figure 4 As shown, the auxiliary node receives the DL signal from the base station and transmits the received DL signal to the environmental IoT device. For UL communication, the environmental IoT device transmits the UL signal directly to the base station.

[0075] Figure 5 This is a diagram illustrating topology 3 in UL-assisted implementation. For example... Figure 5 As shown, Topology 3 is a structure that includes communication between the base station and auxiliary nodes, communication between auxiliary nodes and environmental IoT devices, and communication between environmental IoT devices and the base station.

[0076] Auxiliary nodes assist UL communication. For example, such as... Figure 5As shown, the auxiliary node receives the UL signal from the environmental IoT device and sends the received UL signal to the base station. For DL ​​communication, the environmental IoT device directly receives the DL signal from the base station.

[0077] Figure 4 as well as Figure 5 The auxiliary nodes shown can also be relays, IAB nodes, UEs, repeaters, etc.

[0078] Figure 6 This diagram illustrates Topology 4. Topology 4 is the structure for communication between the UE and the environmental IoT devices. The environmental IoT devices and the UE perform bidirectional communication. The communication involved in Topology 4 can also be understood as sidelink (SL) communication.

[0079] In addition, in the topologies 1 to 4 described above, the carrier can also be provided to the environmental IoT device from other nodes inside or outside the topology (see Section 4.2.1 of Non-Patent Document 3).

[0080] In addition to device 20, wireless communication system 1 (wireless communication network) may also include base stations, auxiliary nodes, intermediate nodes, and / or terminals (UEs of topology 4). In this specification, base stations, auxiliary nodes, intermediate nodes, and terminals may also be rewritten as networks or (network) nodes. Furthermore, A-IoT devices are sometimes simply referred to as A-IoT.

[0081] <Backscatter transmission>

[0082] Base stations, intermediate nodes, auxiliary nodes, and other nodes send RF signals to environmental IoT devices. The environmental IoT devices can be activated and receive power from the RF operating field of the base stations, intermediate nodes, auxiliary nodes, and other nodes via inductive coupling.

[0083] Environmental IoT devices switch the reflection coefficient of their antennas to perform backscatter modulation on RF signals received from base stations, intermediate nodes, auxiliary nodes, and other nodes, and then send information to these base stations, intermediate nodes, auxiliary nodes, and other nodes.

[0084] Figure 7 This is a diagram illustrating backscattering. In Figure 7 The image shows an example of an environmental IoT device performing ON-OFF keying and sending information. Figure 7 The area shown by the dashed line can also represent the off interval, corresponding to the information (bit) "0". A sine wave signal can also correspond to the information "1".

[0085] <Rel-19 SID>

[0086] The Rel-19 SID (Study Item Description) investigates necessary and feasible solutions for A-IoT (refer to Section 4.1 of Non-Patent Document 5). The solutions investigated include, for example, determining which functions or processes are necessary and which are unnecessary.

[0087] In addition, several issues were discussed in RAN 1 regarding the deep learning (DL) and long-range (UL) of A-IoT. One of these issues was the scheduling and timing relationships between DL and UL in A-IoT. The discussion of scheduling and timing relationships included examining the following: 1. Traffic Flow, 2. Device Assumptions, and 3. Topology.

[0088] 1. Business Flow

[0089] As a business direction for A-IoT, we are studying the following DT and DO-DTT.

[0090] •DT (Device terminated)

[0091] As a traffic activity, there are transmissions (DL) to the A-IoT UE, but no transmissions (UL) originating from the A-IoT UE. In other words, there is information being sent to the A-IoT UE, but no information being sent from the A-IoT UE. DT, for example, corresponds to a command-type instruction such as an order or command sent to the A-IoT UE.

[0092] • DO-DTT (Device Originated - Device Terminated Triggered)

[0093] As a service, there are triggers from the network (NW) and transmissions from the A-IoT UE (UL). In other words, as a service, there is information transmitted from the A-IoT UE. DO-DTT, for example, corresponds to a sensor information reporting type that transmits sensor information collected by the A-IoT UE.

[0094] Furthermore, in this disclosure, the transmission of information corresponds to the transmission of a signal containing information or the transmission of a signal. Additionally, in this disclosure, transmission to a device X corresponds to the transmission of a signal (or information) to device X. Furthermore, transmission from a device X and transmission from a device X correspond to device X transmitting a signal (or information). Furthermore, reception from a device X corresponds to receiving a signal (or information) transmitted by receiving device X. Furthermore, reception from a device X corresponds to device X receiving a signal (or information).

[0095] 2. Equipment prerequisites

[0096] In A-IoT UE, the following TX (transmit) and FR (frequency range) 1-FDD are assumed.

[0097] TX

[0098] TX is either a backscattered UL transmission without amplifier (amplified) or a normal UL transmission with amplifier. Alternatively, a backscattered UL transmission with amplifier can also be performed.

[0099] · FR1-FDD

[0100] FR1-FDD is applied in A-IoT UEs. That is, A-IoT UEs can switch carrier frequencies between the carrier of DL and the carrier of UL. However, this disclosure is not limited to FR1-FDD, and can be applied to TDD, FR2, or FR3.

[0101] In addition, the frequency bands of each FR are as follows.

[0102] FR1: 410MHz~7.125GHz

[0103] • FR2: 24.25GHz~52.6GHz

[0104] • FR3: 7.125GHz~24.25GHz

[0105] In FR1, sub-carrier spacing (SCS) of 15kHz, 30kHz, or 60kHz can be used, with a bandwidth of 5~100MHz (BW). FR2 has a higher frequency than FR1 and can also use SCS of 60kHz or 120kHz (including 240kHz), with a bandwidth of 50~400MHz (BW).

[0106] 3. Topology

[0107] exist Figures 2-6Of the topologies shown, we are focusing on topology 1 and topology 2.

[0108] In Topology 1, UL and / or DL ​​communication occurs between the base station and the A-IoT UE without going through intermediate nodes. Additionally, the base station in Topology 1 can also correspond to a microcell.

[0109] In Topology 2, communication occurs between the base station and the A-IoT UE via an intermediate node. The A-IoT UE and the intermediate node configured between the base station and the A-IoT UE perform bidirectional communication. Furthermore, the base station in Topology 2 can also correspond to a macro cell. Additionally, Topology 2 can also be applied to indoor scenarios. Hereinafter, the intermediate node will also be referred to as intermediate UE, int.UE (intermediate UE), etc.

[0110] <Equipment Type>

[0111] For A-IoT devices, the following three device types are defined: Device 1, Device 2a, and Device 2b.

[0112] • Device 1 (also known as Type 1)

[0113] Device 1 is a device type that consumes peak power below 1 μW. Device 1 has energy storage and an initial sampling frequency offset (SFO) of a maximum of Z [parts per million] (Z is 10 to the power of x, where x is an integer greater than or equal to 0). Furthermore, in Device 1, there is no amplification of either DL or UL. UL transmission in Device 1 is performed via backscattering of an externally provided carrier wave (CW), i.e., an unmodulated wave.

[0114] • Equipment 2a (also known as type 2a)

[0115] Device 2a is a device type that consumes peak power in the hundreds of μW. Device 2a has energy storage and an initial sampling frequency offset of up to Z [ppm] (Z is 10 to the power of x (x is an integer greater than or equal to 0)). Furthermore, in device 2a, DL and / or UL amplification is performed. UL transmission in device 2a is performed via backscattering from an externally provided CW.

[0116] • Equipment 2b (also known as Type 2b)

[0117] Device 2b is a device type that consumes peak power in the hundreds of μW. Device 2b has energy storage and an initial sampling frequency offset of up to Z [ppm] (Z is 10 to the power of x (x is an integer greater than or equal to 0)). Furthermore, DL and / or UL amplification is performed in device 2b. UL transmission in device 2b is performed internally. That is, UL transmission in device 2b can also be performed without backscattering from an externally provided CW.

[0118] <Candidate Topology>

[0119] Next, candidate topologies related to CW / R2D / D2R transmissions will be described.

[0120] Figure 8 This is a diagram showing an example of a candidate topology related to CW / R2D / D2R transmission in Topology 1. Figure 8 The diagram shows topologies 1A, 1B, 1C, 1D, and 1E as examples of candidate topologies.

[0121] like Figure 8 As shown, in topologies 1A~1E, signals for CW / R2D communication to A-IoT devices can be sent and received (in... Figure 8 And below, sometimes referred to as "R2D") / D2R communication signals (in Figure 8 And below, sometimes referred to as "D2R").

[0122] In addition, in this embodiment, DL and R2D (reader to device) can be interchanged, as can UL and D2R (device to reader). Here, the reader corresponds to the BS and / or the intermediate UE, and the device corresponds to the A-IoT device.

[0123] In topology 1A, the node sending CW (first BS) is different from the node receiving the D2R communication signal transmitted by the A-IoT device via backscatter (second BS), while the node sending CW is the same as the node sending R2D communication signals. Furthermore, the node sending R2D communication signals is different from the node receiving the D2R communication signal transmitted by the A-IoT device via backscatter. That is, the R in R2D is different from the R in D2R.

[0124] In topology 1B, the nodes that send CW signals (BS), send R2D communication signals, and receive D2R communication signals sent by A-IoT devices via backscatter are the same.

[0125] In Topology 1C, the node transmitting CW (CW node) is different from the node (BS) transmitting R2D communication signals. Furthermore, in Topology 1C, the node transmitting CW is different from the node (BS) receiving D2R communication signals transmitted by A-IoT devices via backscattering. Additionally, in Topology 1C, the node transmitting R2D communication signals is the same as the node receiving D2R communication signals transmitted by A-IoT devices via backscattering. That is, the R in R2D is the same as the R in D2R. Additionally, the CW node can be a BS / (intermediate) UE / IAB node / NCR (network-controlled repeater) node / relay node / other types of nodes.

[0126] In Topology 1D, the node (BS) that sends the R2D communication signal is the same node that receives the D2R communication signal generated and sent by the A-IoT device. That is, the R in R2D is the same as the R in D2R.

[0127] In topology 1E, the node that sends the R2D communication signal (first BS) is different from the node that receives the D2R communication signal generated and sent by the A-IoT device (second BS). That is, the R in R2D is different from the R in D2R.

[0128] Figure 9 This is a diagram representing an example of a candidate topology related to CW / R2D / D2R transmission in Topology 2. Figure 9 The diagram shows topologies 2A, 2B, 2C, 2D, and 2E as examples of candidate topologies.

[0129] like Figure 9 As shown, in topologies 2A~2E, signals for CW / R2D communication to A-IoT devices can be sent and received (in... Figure 9 The signal recorded as "R2D" / D2R communication (in Figure 9 It is recorded as "D2R" in the text.

[0130] In topology 2A, the node sending CW (first intermediate UE) is different from the node receiving the D2R communication signal transmitted by the A-IoT device via backscatter (second intermediate UE), while the node sending CW is the same as the node sending R2D communication signals. Furthermore, the node sending R2D communication signals is different from the node receiving the D2R communication signal transmitted by the A-IoT device via backscatter. That is, the R in R2D is different from the R in D2R.

[0131] In topology 2B, the node that sends CW (intermediate UE), the node that sends R2D communication signals, and the node that receives D2R communication signals sent by A-IoT devices via backscatter are the same.

[0132] In topology 2C, the node transmitting CW (CW node) is different from the node transmitting R2D communication signals (intermediate UE). Furthermore, in topology 1C, the node transmitting CW is different from the node receiving D2R communication signals transmitted by A-IoT devices via backscattering (BS). Additionally, in topology 1C, the node transmitting R2D communication signals is the same as the node receiving D2R communication signals transmitted by A-IoT devices via backscattering. That is, the R in R2D is the same as the R in D2R. Furthermore, the CW node can be a BS / (intermediate) UE / IAB node / NCR node / relay node / other types of nodes.

[0133] In Topology 2D, the node (intermediate UE) that sends the R2D communication signal is the same node that receives the D2R communication signal generated and sent by the A-IoT device. That is, the R in R2D is the same as the R in D2R.

[0134] In topology 2E, the node that sends the R2D communication signal (the first intermediate UE) is different from the node that receives the D2R communication signal generated and sent by the A-IoT device (the second intermediate UE). That is, the R in R2D is different from the R in D2R.

[0135] <Consensus Matters>

[0136] The following consensus has been reached within 3GPP regarding R2D and D2R communication.

[0137] R2D data transmission can also be achieved via PRDCH (Physical Reader to Device Channel). R2D control information can be transmitted via PRDCH, or via other physical R2D channels different from PRDCH. D2R data transmission can also be achieved via PDRCH (Physical Device to Reader Channel). Furthermore, system information can also be transmitted via PRDCH.

[0138] An R2D preamble can also indicate the start of R2D transmission in the time domain. Furthermore, including an R2D timing acquisition signal (e.g., an R2D preamble) is for timing acquisition and indicating the start of R2D transmission in the time domain. Similarly, including a D2R timing acquisition signal (e.g., a D2R preamble) is for timing acquisition and indicating the start of D2R transmission in the time domain.

[0139] <Analysis>

[0140] The above candidate topologies can be considered in communication systems that include A-IoT devices, but there is still room for research on the notification of frequency resources (or frequency domain resources) used for communication in such systems.

[0141] For example, in the candidate topology described above, notifications are made under the following circumstances. Furthermore, in the following description, A-IoT devices, intermediate UEs, and A-IoT devices will be collectively referred to as wireless communication devices.

[0142] • In the case of R2D transmission from an intermediate UE in topologies 2A~2E, notification is sent from the BS to the intermediate UE.

[0143] • In the case of CW transmission from an intermediate UE or CW node in topology 1C and 2C, notification is sent from the BS to the intermediate UE or CW node.

[0144] • In the case of D2R reception via an intermediate UE in topologies 2A~2E, the BS notifies the intermediate UE.

[0145] • In the case of D2R transmission from A-IoT devices in topologies 1A~1E and 2A~2E, notification is sent from the BS or intermediate UE to the A-IoT devices.

[0146] • In the case of R2D reception via A-IoT devices in topologies 1A~1E and 2A~2E, notification is sent from the BS or intermediate UE to the A-IoT devices.

[0147] However, the details of the aforementioned notification have not yet been clearly specified. For example, if frequency resources are not properly notified to the wireless communication device, the device will be unable to properly determine the frequency resources used for communication. For instance, interference may prevent the device from properly transmitting and receiving channels and / or signals, leading to concerns about system performance degradation.

[0148] Therefore, proposals (Proposals 1-8) for appropriately notifying and determining the resources, including frequency resources, used in a communication system containing A-IoT devices will be described below. Exemplarily, a method for indicating / determining the frequency resources for transmitting / receiving a signal in A-IoT based on its relative position to the frequency resources of other signals will be described below.

[0149] The items described in Proposals 1-8 below can be appropriately combined as long as they do not contradict each other.

[0150] As mentioned above, "R2D" refers to the link from reader to device, and "D2R" refers to the link from device to reader. The reader corresponds to the BS or intermediate UE, and the device corresponds to the A-IoT device.

[0151] R2D reception can also refer to the operation of a device receiving signals / channels / information sent by a reader. Alternatively, R2D reception can also refer to signals / channels / information sent by a reader and received by a device. Furthermore, the operation of a reader sending signals / channels / information to a device, or the receiving of signals / channels / information, can also be referred to as "R2D transmission."

[0152] D2R transmission can also refer to the operation of a device sending a signal / channel / information to a reader. Alternatively, D2R transmission can also refer to a signal / channel / information sent by a device and received by a reader. Furthermore, the operation of a reader receiving a signal / channel / information from a device, or the received signal / channel / information, can also be referred to as "D2R reception."

[0153] In the following text, to distinguish between different R2D receptions, we may sometimes use terms like R2D reception A and R2D reception B. Furthermore, different R2D receptions do not necessarily mean that the signals / channels / information received via R2D are different. For example, different R2D receptions can also correspond to R2D receptions with different receiving timings.

[0154] In the following text, to distinguish between different D2R transmissions, we may sometimes use terms like D2R transmission A and D2R transmission B. Furthermore, different D2R transmissions do not necessarily mean that the signals / channels / information transmitted via D2R are different. For example, different D2R transmissions can also correspond to D2R transmissions with different transmission timings.

[0155] In the following context, "CW / R2D / D2R transmission" can also be referred to as communication in a wireless communication system involving A-IoT devices, communication with A-IoT devices, communication involving A-IoT devices, etc.

[0156] The notification / indication can also be carried in the physical (PHY) layer, the MAC (Medium Access Control) layer, the RRC (Radio Resource Control) layer, and a new layer oriented towards the A-IoT definition.

[0157] Hereinafter, “R2D control” refers to control-related information / signals / channels sent from the reader to the device. “R2D control” can be sent in the PRDCH or in a PHY’s R2D channel that is different from the PRDCH (e.g., a dedicated channel for PHY’s R2D control).

[0158] Furthermore, R2D control and PRDCH are sometimes collectively referred to as "R2D control / PRDCH". "R2D control / PRDCH" can also refer to at least one of R2D control and PRDCH. Alternatively, "R2D control / PRDCH" can also refer to a PRDCH that includes R2D control.

[0159] Hereinafter, "D2R control" refers to control-related information / signals / channels sent from a device to a reader. "D2R control" can be sent in the PDRCH or in a different PHY D2R channel (e.g., a dedicated channel for PHY D2R control).

[0160] Furthermore, D2R control and PDRCH are sometimes collectively referred to as "D2R control / PDRCH". "D2R control / PDRCH" can also refer to at least one of D2R control and PDRCH. Alternatively, "D2R control / PDRCH" can also refer to a PDRCH that includes D2R control.

[0161] Hereinafter, "frequency unit" can refer to multiple subcarriers (or subcarrier groups), or it can be a new frequency unit defined for A-IoT. In the former case, the number of subcarriers contained in a frequency unit can be specified in the specification, can be notified to the wireless communication device by the base station 10, intermediate UE, etc., or it can be preset.

[0162] The terms “subcarrier,” “frequency unit,” and “resource block (RB)” used below may also be referred to as frequency resources (or frequency domain resources). For example, one or a single “subcarrier,” “frequency unit,” and “resource block (RB)” can be an example of a single frequency resource.

[0163] In the following, a “resource block (RB)” may also contain multiple subcarrier / frequency units.

[0164] The bandwidth for A-IoT (also known as A-IoT bandwidth or A-IoT BW) described below can be specified by standards and can be notified to wireless communication devices through base stations 10, intermediate UEs, etc. It can be preset, and the entire A-IoT bandwidth or a part of it can also be used for CW / R2D / D2R transmission. A-IoT bandwidth can also be referred to as bandwidth for CW / R2D / D2R transmission, etc.

[0165] <Proposal 1>

[0166] Proposal 1 describes the frequency resources for receiving R2D timing acquisition signals (e.g., R2D preambles). Furthermore, the reception of R2D timing acquisition signals can also correspond to blind decoding of R2D timing acquisition signals.

[0167] A-IoT devices perform decoding (e.g., blind decoding) of R2D timing acquisition signals (e.g., R2D preambles) at one or more frequency locations defined by a specification including at least one of the following options. Alternatively, "decoding" here can be replaced with other terms such as detection, monitoring, extraction, or searching. Blind decoding can also be referred to as blind detection.

[0168] Figure 10 This is a diagram showing examples of the options for Proposal 1. Figure 10 The vertical axis in each option represents the frequency axis.

[0169] <Option 1 of Proposal 1>

[0170] like Figure 10 As shown in the example of Option 1 of Proposal 1, the frequency position is represented by the absolute position of the frequency. The absolute position refers to frequencies such as X kHz, Y kHz (where X and Y can be above 0). For example, the absolute position can also be defined per band and / or per frequency range. Furthermore, the absolute position can be defined in the specification or predetermined by the system.

[0171] Alternatively, in one example of Option 1 of Proposal 1, in order to perform blind decoding of the R2D preamble on a per-band-domain basis, it is also possible to determine / indicate only one frequency position.

[0172] <Option 2 of Proposal 1>

[0173] In option 2 of proposal 1, the frequency position is represented by its relative position to a reference frequency position. For example, in option 2 of proposal 1, such as... Figure 10As shown in the example of option 2, a certain frequency position F is represented as F = X + N. ΔY. Here, X is the reference frequency location. ΔY is the step size.

[0174] N is a value selected from a set. For example, the set of N can be a set containing at least a subset of integers greater than or equal to 0 (i.e., N = 0, 1, 2, 3, ...), the set of N can be a set containing at least a subset of even numbers greater than or equal to 0 (i.e., N = 0, 2, 4, 6, ...), or the set of N can be a set containing at least a subset of odd numbers greater than or equal to 0 (i.e., N = 1, 3, 5, ...).

[0175] The units of X and ΔY can also be the same. For example, X = x MHz and ΔY = y MHz. Alternatively, the units of X and ΔY can be different. For example, X = x MHz and ΔY = y kHz.

[0176] At least one of X, ΔY, and N can also be defined per band and / or per frequency range. Furthermore, at least one of X, ΔY, and N can be defined in a specification or predetermined by the system. For example, X can be defined in a specification, while ΔY and N can be predetermined by the system.

[0177] <Option 3 of Proposal 1>

[0178] In option 3 of proposal 1, similar to option 2, the frequency position is represented by a relative position referenced to a certain frequency position. However, unlike option 2, option 3 uses multiple (e.g., two) steps to represent the relative position. For example, in option 3 of proposal 1, as... Figure 10 As shown in example 3, a certain frequency position F is represented as F = X + N. ΔY+M ΔZ. Here, X is the reference frequency location. ΔY and ΔZ are the step sizes. Furthermore, ΔY and ΔZ can be different values.

[0179] N is a value selected from a set. For example, the set of N can be a set containing at least a subset of integers greater than or equal to 0 (i.e., N = 0, 1, 2, 3, ...), the set of N can be a set containing at least a subset of even numbers greater than or equal to 0 (i.e., N = 0, 2, 4, 6, ...), or the set of N can be a set containing at least a subset of odd numbers greater than or equal to 0 (i.e., N = 1, 3, 5, ...).

[0180] M is a set of values ​​selected from a certain set. For example, the set of M can be a set containing at least a subset of integers greater than or equal to 0 (i.e., M = 0, 1, 2, 3, ...), the set of M can be a set containing at least a subset of even numbers greater than or equal to 0 (i.e., M = 0, 2, 4, 6, ...), or the set of M can be a set containing at least a subset of odd numbers greater than or equal to 0 (i.e., M = 1, 3, 5, ...).

[0181] The units of X, ΔY, and ΔZ can also be the same. For example, X = x MHz, ΔY = y MHz, and ΔZ = z MHz. Alternatively, the unit of at least one of X, ΔY, and ΔZ can be different from the unit of the other at least one. For example, X = x MHz, ΔY = y MHz, and ΔZ = z kHz. Furthermore, for example, X = x MHz, ΔY = y kHz, and ΔZ = z kHz.

[0182] At least one of X, ΔY, ΔZ, N, and M can also be defined per band and / or per frequency range. Furthermore, at least one of X, ΔY, ΔZ, N, and M can be defined in a specification or predetermined by the system. For example, at least one of X, ΔY, ΔZ, N, and M can be defined in a specification, and at least one of the remaining X, ΔY, ΔZ, N, and M can also be predetermined by the system.

[0183] Additionally, in option 3, ΔY can be a larger step size / granularity, and ΔZ can be a finer step size / granularity. For example... Figure 10 As shown in the example of option 3, there are m frequency positions within each frequency bandwidth ΔY (in Figure 10 In the example, there are 8 (the number of frequency positions is 8). The interval between two adjacent frequencies in the m frequency positions is represented by ΔZ. Furthermore, the m frequency positions are the number of candidate values ​​contained in the set M.

[0184] In other words, for each value i, at X+i There can also be m frequency positions surrounding the frequency ΔY. Furthermore, the interval between any two adjacent frequency positions is denoted by ΔZ. Additionally, the m frequency positions represent the number of candidate values ​​contained in the set M.

[0185] As a variation of Option 2 / 3 of Proposal 1, the bandwidth for decoding / detecting the R2D timing acquisition signal (e.g., the R2D preamble) can be explicitly defined by the specification or predefined by the system, etc. For example, the bandwidth starts at frequency point X1 and ends at frequency point X2. The A-IoT device decodes / detects the R2D preamble within this bandwidth. Alternatively, the bandwidth can be implicitly defined by the specification or predefined implicitly by the system, etc. For example, the bandwidth can also be implicitly defined using the ranges of X, ΔY, ΔZ, and N and M.

[0186] According to Proposal 1, A-IoT devices can determine the frequency resources for decoding (e.g., blind decoding) of R2D timing acquisition signals (e.g., R2D preambles), thus enabling appropriate and efficient decoding (e.g., blind decoding) of R2D timing acquisition signals (e.g., R2D preambles).

[0187] <Proposal 2>

[0188] Proposal 2 shows that the frequency resources of a certain R2D receiver are determined based on the frequency resources of a different R2D receiver.

[0189] As shown in Proposal 1, the R2D preamble detected blindly by the A-IoT device is referred to as "reference R2D preamble". Furthermore, R2D control received after or immediately following the reference R2D preamble is referred to as "reference R2D control". Additionally, PRDCH received after or immediately following the reference R2D preamble is referred to as "reference PRDCH". Sometimes, "reference R2D control" and "reference PRDCH" are collectively referred to as "reference R2D control / PRDCH". "Reference R2D control / PRDCH" may also correspond to at least one of reference R2D control and reference PRDCH. Alternatively, "reference R2D control / PRDCH" may also correspond to a reference PRDCH that includes reference R2D control.

[0190] Additionally, R2D control used for system information transmission can also be referred to as "reference R2D control". Furthermore, PRDCH used for system information transmission can also be referred to as "reference PRDCH".

[0191] Regarding the frequency resources for R2D receiver A, the A-IoT device determines them based on their relative relationship with the frequency resources for R2D receiver B. In other words, the A-IoT device determines the frequency resources for R2D receiver A based on the frequency resources of R2D receiver B. Alternatively, the A-IoT device determines the frequency resources for R2D receiver A with reference to the frequency resources of R2D receiver B. Or, the A-IoT device determines the frequency resources for R2D receiver A in association with the frequency resources of R2D receiver B.

[0192] Additionally, R2D receiver A in Proposal 2 may include at least any of the following. For example, the frequency resources of R2D receiver A correspond to frequency resources used for receiving at least any of the following.

[0193] • Reference R2D control

[0194] ·Reference PRDCH

[0195] R2D preamble

[0196] • R2D midamble

[0197] • R2D postamble

[0198] R2D control

[0199] ·PRDCH

[0200] Furthermore, the R2D receiver B in Proposal 2 may include at least any of the following. For example, the frequency resources of the R2D receiver B correspond to frequency resources used for receiving at least any of the following.

[0201] • Refer to R2D preamble

[0202] • Reference R2D control

[0203] ·Reference PRDCH

[0204] • R2D preamble / R2D inode / R2D postode / R2D control / PRDCH

[0205] • R2D preamble / R2D inode / R2D postamble / R2D control / PRDCH before or immediately before receiving A in R2D

[0206] • The last R2D preamble / R2D inode / R2D postode / R2D control / PRDCH received before receiving A in R2D

[0207] • R2D preamble / R2D introductory code / R2D postamble / R2D control / PRDCH associated with R2D receiver A

[0208] • Triggering R2D reception A's R2D preamble / R2D inode / R2D postode / R2D control / PRDCH

[0209] • Scheduling R2D receive A's R2D preamble / R2D introductory / R2D postamble / R2D control / PRDCH

[0210] Next, seven examples illustrating the application of Proposal 2 will be given. However, the application examples of Proposal 2 are not limited to the seven examples shown in the diagram.

[0211] Figure 11 This is a diagram representing scenarios 1 to 3 of proposal 2. Figure 12 This is a diagram representing scenarios 4 to 7 of proposal 2. Figure 11 as well as Figure 12 The horizontal axis in each scenario represents the time axis. Additionally, Figure 11 as well as Figure 12 The various scenarios are not intended to imply identical frequency resources. For example, Figure 11 Case 1 does not require that the frequency resources of the reference R2D preamble be the same as the frequency resources of the reference R2D control / PRDCH.

[0212] In addition, Figure 11 as well as Figure 12 In cases 2 through 6, the combination of R2D preamble and R2D control / PRDCH is exemplarily described as a "signal". However, the combination of R2D preamble and R2D control / PRDCH can also be associated with terms other than "signal". Furthermore, in Figure 11 as well as Figure 12 In scenarios 2 to 6, in order to distinguish the “signals”, identification numbers such as signal #1, signal #2, and signal #3 are added sequentially in the time direction.

[0213] exist Figure 11 In Case 1, the frequency resources of the reference R2D control / PRDCH are determined based on the relative relationship with the frequency resources of the reference R2D preamble immediately preceding the reference R2D control / PRDCH.

[0214] exist Figure 11 In scenario 2, the frequency resources of each of the R2D preambles for signals #2 to #4 are determined based on their relative frequency resources to the reference R2D preamble of signal #1 preceding the R2D preambles for signals #2 to #4. Furthermore, the frequency resources of each of the R2D preambles for signals #2 to #4 are determined based on their relative frequency resources to the same reference R2D preambles, but are not limited to being the same frequency resources. The frequency resources of each of the R2D preambles for signals #2 to #4 can also be different frequency resources.

[0215] exist Figure 11 In scenario 3, the frequency resources of each of the R2D control / PRDCH signals #2 to #4 are determined based on the relative relationship of the frequency resources of the reference R2D preamble of signal #1 preceding the R2D preamble of signals #2 to #4. Furthermore, the frequency resources of the R2D control / PRDCH signals #2 to #4 can also be different from each other.

[0216] exist Figure 12In scenario 4, the frequency resources of the R2D preamble for signal #2 are determined based on the relative relationship with the frequency resources of the R2D preamble for signal #1 preceding the R2D preamble for signal #2. Furthermore, the frequency resources of the R2D preamble for signal #3 are determined based on the relative relationship with the frequency resources of the R2D preamble for signal #2 preceding the R2D preamble for signal #3.

[0217] exist Figure 12 In scenario 5, the frequency resources of the R2D preamble for signal #2 are determined based on the relative relationship with the frequency resources of the R2D control / PRDCH of signal #1 preceding the R2D preamble for signal #2. Furthermore, the frequency resources of the R2D preamble for signal #3 are determined based on the relative relationship with the frequency resources of the R2D control / PRDCH of signal #2 preceding the R2D preamble for signal #3.

[0218] exist Figure 12 In scenario 6, the frequency resources for the R2D control / PRDCH of signal #1 are determined based on the relative relationship with the frequency resources of the R2D preamble of signal #1 preceding the R2D control / PRDCH of signal #1. The frequency resources for the R2D control / PRDCH of signal #2 are determined based on the relative relationship with the frequency resources of the R2D preamble of signal #2 preceding the R2D control / PRDCH of signal #2. The frequency resources for the R2D control / PRDCH of signal #3 are determined based on the relative relationship with the frequency resources of the R2D preamble of signal #3 preceding the R2D control / PRDCH of signal #3.

[0219] exist Figure 12 In scenario 7, the frequency resources of the PRDCH are determined based on their relative relationship with the frequency resources controlled by the R2D prior to the PRDCH.

[0220] In Proposal 2, the A-IoT device determines the frequency resources of R2D receiver A based on the frequency resources of R2D receiver B. Therefore, since the frequency resources of R2D receiver A can be appropriately determined, the transmission and / or reception channels and / or signals can be appropriately configured, avoiding system performance degradation. Furthermore, since the frequency resources of R2D receiver A are determined based on their relative relationship with the frequency resources of R2D receiver B, the overhead of signaling used to indicate / set the frequency resources of R2D receiver A can be reduced.

[0221] Furthermore, in Proposal 2 mentioned above, such as Figure 11 Similar to scenarios 2 and 3, the frequency resources of multiple R2D receivers A can also be determined based on the common frequency resources of R2D receiver B. In this case, the frequency resources of multiple R2D receivers A can be the same or different.

[0222] Furthermore, the same operations as those performed by the A-IoT device in Proposal 2 can also be performed by the reader side (e.g., the BS or intermediate UE). For example, the BS or intermediate UE can also determine the frequency resources for R2D transmission of A based on the frequency resources for R2D transmission of B. And the BS or intermediate UE can also perform R2D transmission of A within the determined frequency resources.

[0223] <Proposal 3>

[0224] In Proposal 3, as a method for determining the frequency resources of R2D receiver A based on the frequency resources of R2D receiver B, the method for determining the location (frequency location) of the frequency resources and the method for determining the bandwidth of the frequency resources are described.

[0225] <Proposal 3-1: Method for Determining Frequency Position>

[0226] Figure 13 This is a diagram illustrating an example of proposal 3-1. Figure 13 The horizontal axis represents the frequency axis. Figure 13 The diagram shows the frequency resources of R2D receiver B and the frequency resources of R2D receiver A, which exist in a position relative to the frequency resources of R2D receiver B. For example... Figure 13 As shown, for each of the frequency resources of R2D receiver A and R2D receiver B, the starting point of the frequency position is shown (in... Figure 13 The middle is the starting point, and the center point is the center point. Figure 13 The center is the middle point, and the end point is the end point. Figure 13 The middle point represents the end point. The starting point represents the frequency of the low-frequency end of the frequency resource, the ending point represents the frequency of the high-frequency end of the frequency resource, and the center point represents the point between the starting point and the ending point.

[0227] As a first method for determining the frequency position, the frequency position of R2D receiver A is determined based on the condition that the center point / start point / end point of the frequency position of R2D receiver A is the same as the center point / start point / end point of the frequency position of R2D receiver B.

[0228] For example, the frequency position of R2D receiver A is determined based on at least one of the following conditions.

[0229] The center point of the frequency position of R2D receiver A is the same as the center point of the frequency position of R2D receiver B.

[0230] The starting point of the frequency position of R2D receiver A is the same as the starting point of the frequency position of R2D receiver B.

[0231] The end point of the frequency position of R2D receiver A is the same as the end point of the frequency position of R2D receiver B.

[0232] The center point of the frequency position of R2D receiver A is the same as the point other than the center point of the frequency position of R2D receiver B (e.g., the start point or the end point).

[0233] The starting point of the frequency position of R2D receiver A is the same as the point other than the starting point of the frequency position of R2D receiver B (e.g., the center point or the end point).

[0234] The end point of the frequency position of R2D receiver A is the same as the point other than the end point of the frequency position of R2D receiver B (e.g., the start point or the center point).

[0235] As a second method for determining the frequency position, the frequency position of R2D receiver A is determined based on the condition that the center point / start point / end point of the frequency position of R2D receiver A is offset relative to the center point / start point / end point of the frequency position of R2D receiver B.

[0236] For example, the frequency position of R2D receiver A is determined based on at least one of the following conditions.

[0237] • The center point of the frequency position of R2D receiver A is offset relative to the center point of the frequency position of R2D receiver B.

[0238] The starting point of the frequency position of R2D receiver A is offset relative to the starting point of the frequency position of R2D receiver B.

[0239] The end point of the frequency position of R2D receiver A is offset relative to the end point of the frequency position of R2D receiver B.

[0240] • The center point of the frequency position of R2D receiver A is offset relative to a point other than the center point of the frequency position of R2D receiver B (e.g., the start point or the end point).

[0241] The starting point of the frequency position of R2D receiver A is offset from a point other than the starting point of the frequency position of R2D receiver B (e.g., the center point or the end point).

[0242] • The end point of the frequency position of R2D receiver A is an offset relative to a point other than the end point of the frequency position of R2D receiver B (e.g., the start point or the center point).

[0243] exist Figure 13 In the example, based on the condition that the center point of the frequency position of R2D receiver A is offset relative to the center point of the frequency position of R2D receiver B, the frequency position of R2D receiver A is determined according to the frequency position of R2D receiver B.

[0244] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0245] In addition, the frequency position of R2D receiver A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the frequency position of R2D receiver B.

[0246] <Proposal 3-2: Methods for determining the bandwidth of frequency resources>

[0247] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources of R2D receiver A is determined based on the condition that the bandwidth of the frequency resources of R2D receiver A is the same as that of R2D receiver B. Alternatively, the bandwidth of frequency resources can be expressed by the number of subcarriers, the number of redundancies (RBs), the number of frequency units, or in units such as kHz or MHz.

[0248] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources of R2D receiver A is determined based on the condition that the bandwidth of the frequency resources of R2D receiver A is offset relative to the bandwidth of the frequency resources of R2D receiver B. Alternatively, the bandwidth of the frequency resources of R2D receiver A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources of R2D receiver B.

[0249] In addition, the offset in the second method for determining the bandwidth of frequency resources can be fixed by specifications, predetermined in the system, or indicated.

[0250] Furthermore, the bandwidth of frequency resources can also be determined based on the start and end points of the frequency resources. In this case, if the start and end points are determined through the aforementioned proposal 3-1, the bandwidth can also be implicitly determined.

[0251] In Proposal 3, the A-IoT device determines that the location of the frequency resource for R2D receiver A is the same as the frequency resource for R2D receiver B, or the location is determined based on the frequency resource of R2D receiver B. Furthermore, in Proposal 3, the A-IoT device determines that the bandwidth of the frequency resource for R2D receiver A is the same as the bandwidth of the frequency resource for R2D receiver B, or the bandwidth is determined based on the bandwidth of the frequency resource for R2D receiver B. Therefore, since the frequency resource for R2D receiver A can be appropriately determined, the transmission and reception channels and / or signals can be appropriately sent, avoiding system performance degradation. Moreover, since the frequency resource for R2D receiver A is determined based on its relative relationship with the frequency resource for R2D receiver B, the signaling overhead for indicating / setting the frequency resource for R2D receiver A can be reduced.

[0252] <Proposal 4>

[0253] Proposal 4 specifies the bandwidth for R2D reception. Furthermore, the frequency resources used for R2D reception are included in this bandwidth (hereinafter referred to as R2D bandwidth). Proposal 4 describes a method for determining the frequency location of the band having R2D bandwidth. Additionally, in the following description, "R2D bandwidth" corresponds to a band having R2D bandwidth and capable of R2D reception.

[0254] The frequency position of the R2D bandwidth is determined based on its relative relationship with respect to the reference R2D preamble / reference R2D control / reference PRDCH. For example, the frequency position of the R2D bandwidth can also be determined by the A-IoT device. Furthermore, the reference R2D preamble / reference R2D control / reference PRDCH is equivalent to at least one of the reference R2D preamble, reference R2D control, and reference PRDCH. Additionally, the frequency position of the R2D bandwidth can also refer solely to the R2D bandwidth.

[0255] For example, similar to Proposal 3-1, the frequency position of the R2D bandwidth can also be determined. Exemplarily, as a first method for determining the frequency position of the R2D bandwidth, the frequency position of the R2D bandwidth is determined based on the condition that the center point / start point / end point of the frequency position of the R2D bandwidth is the same as the center point / start point / end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0256] For example, the frequency position of the R2D bandwidth is determined based on at least one of the following conditions.

[0257] The center point of the frequency position of the R2D bandwidth is the same as the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0258] The starting point of the frequency position of the R2D bandwidth is the same as the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0259] The end point of the frequency position of the R2D bandwidth is the same as the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0260] The center point of the frequency position of the R2D bandwidth is the same as the point other than the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH (e.g., the start point or the end point).

[0261] The starting point of the frequency position of the R2D bandwidth is the same as the point other than the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH (e.g., the center point or the end point).

[0262] The end point of the frequency position of the R2D bandwidth is the same as the point other than the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH (e.g., the start point or center point).

[0263] As a second method for determining the frequency position of the R2D bandwidth, the frequency position of the R2D bandwidth is determined based on the condition that the center point / start point / end point of the frequency position of the R2D bandwidth is offset relative to the center point / start point / end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0264] For example, the frequency position of the R2D bandwidth is determined based on at least one of the following conditions.

[0265] The center point of the frequency position of the R2D bandwidth is offset relative to the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0266] The starting point of the frequency position of the R2D bandwidth is the offset relative to the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0267] The end point of the frequency position of the R2D bandwidth is the offset relative to the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH.

[0268] • The center point of the frequency position of the R2D bandwidth is an offset from a point other than the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH (e.g., the start point or the end point).

[0269] The starting point of the frequency position of the R2D bandwidth is an offset from a point other than the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH (e.g., the center point or the end point).

[0270] • The end point of the frequency position of the R2D bandwidth is an offset from a point other than the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH (e.g., the start point or center point).

[0271] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0272] In Proposal 4, the A-IoT device determines the location of the R2D bandwidth, which includes the frequency resources of R2D receiver A, based on the frequency resources of R2D receiver B. Therefore, since the frequency resources of R2D receiver A can be appropriately determined, the transmission and / or reception channels and / or signals can be appropriately sent, avoiding system performance degradation. Furthermore, since the frequency resources of R2D receiver A are determined according to their relative relationship with the frequency resources of R2D receiver B, the overhead of signaling used to indicate / set the frequency resources of R2D receiver A can be reduced.

[0273] <Proposal 5>

[0274] Proposal 5 shows that the frequency resources for a D2R transmission are determined based on the frequency resources of a D2R transmission that are different from those for R2D reception and / or the D2R transmission itself.

[0275] Here, similar to Proposal 2, the R2D preamble blindly detected by the A-IoT device is referred to as "Reference R2D Preamble". Furthermore, R2D control received after or immediately following the Reference R2D Preamble is referred to as "Reference R2D Control". Additionally, PRDCH received after or immediately following the Reference R2D Preamble is referred to as "Reference PRDCH". Furthermore, "Reference R2D Control" and "Reference PRDCH" are sometimes collectively referred to as "Reference R2D Control / PRDCH". "Reference R2D Control / PRDCH" may also correspond to at least one of Reference R2D Control and Reference PRDCH. Alternatively, "Reference R2D Control / PRDCH" may also correspond to a Reference PRDCH that includes Reference R2D Control.

[0276] Additionally, R2D control used for system information transmission can also be referred to as "reference R2D control". Furthermore, PRDCH used for system information transmission can also be referred to as "reference PRDCH".

[0277] Furthermore, the D2R preamble following or immediately after the reference R2D preamble / reference R2D control / reference PRDCH is referred to as "reference D2R preamble". Similarly, the D2R control following or immediately after the reference R2D preamble / reference R2D control / reference PRDCH is referred to as "reference D2R control". Furthermore, the PDRCH following or immediately after the reference R2D preamble / reference R2D control / reference PRDCH is referred to as "reference PDRCH". Additionally, the D2R preamble, D2R control, and PDRCH used to send responses during the initial access procedure can also be referred to as "reference D2R preamble", "reference D2R control", and "reference PDRCH", respectively. Here, the initial access process refers to the process by which the reader performs actions to identify the device. For example, an A-IoT device intends to be identified by the reader through the initial access process.

[0278] The following examples illustrate how, in Proposal 5-1, the frequency resources for D2R transmission A are determined by an A-IoT device based on their relative relationship to the frequency resources for R2D reception B. In Proposal 5-2, the frequency resources for D2R transmission A are determined by an A-IoT device based on their relative relationship to the frequency resources of the CW (carrier wave) used for D2R transmission A. In Proposal 5-3, the frequency resources for D2R transmission A are determined by an A-IoT device based on their relative relationship to the frequency resources for D2R transmission B. In Proposal 5-4, the frequency resources for CW (carrier wave) reception are determined by an A-IoT device based on their relative relationship to the frequency resources for R2D reception B. In Proposal 5-5, the frequency resources for CW (carrier wave) reception are determined by an A-IoT device based on their relative relationship to the frequency resources for D2R transmission B.

[0279] <Proposal 5-1>

[0280] In Proposal 5-1, the frequency resources for D2R transmission of A are determined by the A-IoT device based on their relative relationship with the frequency resources for R2D reception of B. In other words, the A-IoT device determines the frequency resources for D2R transmission of A based on the frequency resources of R2D reception of B. Alternatively, the A-IoT device determines the frequency resources for D2R transmission of A with reference to the frequency resources of R2D reception of B. Or, the A-IoT device determines the frequency resources for D2R transmission of A in association with the frequency resources of R2D reception of B.

[0281] Additionally, D2R transmission A in Proposal 5-1 may include at least one of the following. For example, the frequency resources of D2R transmission A correspond to frequency resources used for transmission of at least one of the following.

[0282] • Refer to D2R preamble

[0283] • Reference D2R control

[0284] ·Reference PDRCH

[0285] • D2R timing signal acquisition (D2R preamble)

[0286] D2R guide code

[0287] D2R postcode

[0288] D2R control

[0289] ·PDRCH

[0290] Furthermore, the R2D receiver B in Proposal 5-1 may include at least any of the following. For example, the frequency resources of the R2D receiver B correspond to frequency resources used for receiving at least any of the following.

[0291] • Refer to R2D preamble

[0292] • Reference R2D control

[0293] ·Reference PRDCH

[0294] • R2D preamble / R2D inode / R2D postode / R2D control / PRDCH

[0295] • R2D preamble / R2D inode / R2D postode / R2D control / PRDCH before or immediately before sending A in D2R.

[0296] • The last received R2D preamble / R2D inode / R2D postamble / R2D control / PRDCH before D2R sends A.

[0297] • R2D preamble / R2D introductory / R2D postamble / R2D control / PRDCH associated with D2R transmission A

[0298] • Triggering D2R transmission of A: R2D preamble / R2D intermezzo / R2D postamble / R2D control / PRDCH

[0299] • Scheduling D2R transmission of A's R2D preamble / R2D inode / R2D postamble / R2D control / PRDCH

[0300] <Proposal 5-2>

[0301] In Proposal 5-2, the frequency resources for D2R transmission A are determined by the A-IoT device based on their relative relationship to the frequency resources of the CW (carrier wave) used for D2R transmission A. In other words, the A-IoT device determines the frequency resources for D2R transmission A based on the frequency resources of the CW used for D2R transmission A. Alternatively, the A-IoT device determines the frequency resources for D2R transmission A with reference to the frequency resources of the CW used for D2R transmission A. Or, the A-IoT device determines the frequency resources for D2R transmission A in association with the frequency resources of the CW used for D2R transmission A.

[0302] Furthermore, the node transmitting CW (e.g., BS or intermediate UE) can be the same as or different from the reader node performing R2D transmission / D2R reception. The node transmitting CW (e.g., BS or intermediate UE) can exist inside or outside the topology.

[0303] The frequency resources of the CW (carrier wave) used for D2R transmission A correspond to the frequency resources of the CW (carrier wave) received for D2R transmission A. Furthermore, CW reception is sometimes simply referred to as CW reception.

[0304] In addition, the D2R transmission A in Proposal 5-2 can be the same as the D2R transmission A shown in Proposal 5-1 above.

[0305] <Proposal 5-3>

[0306] In Proposal 5-3, the frequency resources for D2R transmission A are determined by the A-IoT device based on their relative relationship with the frequency resources for D2R transmission B.

[0307] In addition, the D2R transmission A in Proposal 5-3 can be the same as the D2R transmission A shown in Proposal 5-1 above.

[0308] Furthermore, the D2R transmission B in Proposal 5-3 may include at least one of the following. For example, the frequency resources of the D2R transmission B correspond to frequency resources used for transmission of at least one of the following.

[0309] • Refer to D2R preamble

[0310] • Reference D2R control

[0311] ·Reference PDRCH

[0312] • D2R preamble / D2R inode / D2R postode / D2R control / PDRCH

[0313] • D2R preamble / D2R introductory / D2R postcode / D2R control / PDRCH before or immediately before sending A in D2R

[0314] • The last D2R preamble / D2R intermezzo / D2R postamble / D2R control / PDRCH sent before sending A in D2R

[0315] • D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH associated with D2R transmission A

[0316] Here, the D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH associated with D2R transmission A can be, for example, the D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH that transmits the same information as D2R transmission A, and / or the D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH corresponding to a repetition of D2R transmission A.

[0317] <Proposal 5-4>

[0318] In Proposal 5-4, the frequency resources for CW (carrier wave) reception are determined by the A-IoT device based on their relative relationship to the frequency resources of R2D receiver B. In other words, the A-IoT device determines the frequency resources for CW (carrier wave) reception based on the frequency resources of R2D receiver B. Alternatively, the A-IoT device determines the frequency resources for CW (carrier wave) reception with reference to the frequency resources of R2D receiver B. Or, the A-IoT device determines the frequency resources for CW (carrier wave) reception in association with the frequency resources of R2D receiver B.

[0319] Additionally, the R2D receiver B in Proposal 5-4 may include at least any of the following. For example, the frequency resources of the R2D receiver B correspond to frequency resources used for receiving at least any of the following.

[0320] • Refer to R2D preamble

[0321] • Reference R2D control

[0322] ·Reference PRDCH

[0323] • R2D preamble / R2D inode / R2D postode / R2D control / PRDCH

[0324] • R2D preamble / R2D introductory / R2D postamble / R2D control / PRDCH before or immediately before CW reception

[0325] • The last R2D preamble / R2D inode / R2D postamble / R2D control / PRDCH received before CW reception

[0326] • R2D preamble / R2D introductory code / R2D postamble / R2D control / PRDCH associated with CW receiver

[0327] • R2D preamble / R2D introductory code / R2D postamble / R2D control / PRDCH that trigger CW reception

[0328] • Scheduling CW reception of R2D preamble / R2D introductory / R2D postamble / R2D control / PRDCH

[0329] <Proposal 5-5>

[0330] In Proposal 5-5, the frequency resources for CW (carrier wave) reception are determined by the A-IoT device with reference to the frequency resources of D2R transmission B. In other words, the A-IoT device determines the frequency resources for CW (carrier wave) reception based on the frequency resources of D2R transmission B. Alternatively, the A-IoT device determines the frequency resources for CW (carrier wave) reception with reference to the frequency resources of D2R transmission B. Or, the A-IoT device determines the frequency resources for CW (carrier wave) reception in association with the frequency resources of D2R transmission B.

[0331] Additionally, the D2R transmission B in Proposal 5-5 may include at least one of the following. For example, the frequency resources of the D2R transmission B correspond to frequency resources used for transmission of at least one of the following.

[0332] • Refer to D2R preamble

[0333] • Reference D2R control

[0334] ·Reference PDRCH

[0335] • D2R preamble / D2R inode / D2R postode / R2D control / PRDCH

[0336] • D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH before or immediately before CW reception

[0337] • The last D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH sent before CW reception

[0338] • D2R preamble / D2R introductory code / D2R postamble / D2R control / PDRCH associated with CW reception

[0339] Next, seven examples illustrating the application of Proposal 5 will be given. However, the application examples of Proposal 5 are not limited to the seven examples shown in the diagram.

[0340] Figure 14 This is a diagram representing scenarios 1 to 3 of proposal 5. Figure 15 This is a diagram representing scenarios 4 through 7 of proposal 5. Figure 14 as well as Figure 15 The horizontal axis in each scenario represents the time axis. Additionally, Figure 14 as well as Figure 15 The various scenarios are not intended to imply identical frequency resources. For example, Figure 14 Case 1 is not limited to the frequency resources of the reference R2D preamble being the same as the frequency resources of the reference R2D control / PRDCH.

[0341] In addition, Figure 14 as well as Figure 15 In cases 1 through 6, the combination of R2D preamble and R2D control / PRDCH, and the combination of D2R preamble and D2R control / PDRCH, are sometimes exemplarily described as "signals." However, the combination of R2D preamble and R2D control / PRDCH, and the combination of D2R preamble and D2R control / PDRCH, can also be associated with terms other than "signals." Furthermore, in Figure 14 as well as Figure 15 In cases 1 to 6, in order to distinguish the “signals”, identification numbers such as signal #1, signal #2, and signal #3 are added sequentially in the time direction.

[0342] Figure 14Cases 1 to 3 correspond to Proposal 5-1, in which the frequency resources for D2R to transmit A are determined by the A-IoT device based on the relative relationship with the frequency resources for R2D to receive B. Figure 15 Scenarios 4 to 7 correspond to Proposal 5-3, in which the frequency resources for D2R transmission A are determined by the A-IoT device based on the relative relationship with the frequency resources for D2R transmission B.

[0343] exist Figure 14 In Case 1, the frequency resources of the D2R preambles for signals #2 to #4 are determined based on their relative relationship with the frequency resources of the reference R2D preamble for signal #1 preceding the D2R preambles for signals #2 to #4. Furthermore, the frequency resources of each of the D2R preambles for signals #2 to #4 are determined based on their relative relationship with the frequency resources of their respective reference R2D preambles, but are not limited to being identical frequency resources. The frequency resources of each of the D2R preambles for signals #2 to #4 can also be different frequency resources.

[0344] exist Figure 14 In scenario 2, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #2 are determined based on the relative relationship between the frequency resources of the D2R preamble and the R2D preamble of signal #1 preceding the D2R control / PDRCH of signal #2. Furthermore, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #4 are determined based on the relative relationship between the frequency resources of the D2R preamble and the R2D preamble of signal #3 preceding the D2R control / PDRCH of signal #4. Additionally, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #2 can be different from each other. Furthermore, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #4 can also be different from each other.

[0345] exist Figure 14In scenario 3, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #2 are determined based on the relative relationship between the frequency resources of the R2D control / PRDCH of signal #1 preceding the D2R preamble and D2R control / PDRCH of signal #2. Furthermore, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #4 are determined based on the relative relationship between the frequency resources of the R2D control / PRDCH of signal #3 preceding the D2R preamble and D2R control / PDRCH of signal #4. Additionally, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #2 can be different from each other. Furthermore, the frequency resources for the D2R preamble and D2R control / PDRCH of signal #4 can also be different from each other.

[0346] exist Figure 15 In scenario 4, the frequency resources of the D2R preamble for signal #2 are determined based on the relative relationship with the frequency resources of the R2D preamble for signal #1 preceding the D2R preamble for signal #2. Furthermore, the frequency resources of the D2R preamble for signal #3 are determined based on the relative relationship with the frequency resources of the R2D preamble for signal #1 preceding the D2R preamble for signal #3. Additionally, the frequency resources of the D2R preamble for signal #2 and the D2R preamble for signal #3 can be different from each other.

[0347] exist Figure 15 In scenario 5, the frequency resources of the D2R preamble for signal #2 are determined based on the relative relationship with the frequency resources of the D2R preamble for signal #1 preceding the D2R preamble for signal #2. Furthermore, the frequency resources of the D2R preamble for signal #3 are determined based on the relative relationship with the frequency resources of the D2R preamble for signal #2 preceding the D2R preamble for signal #3.

[0348] exist Figure 15 In scenario 6, the frequency resources of the D2R preamble for signal #2 are determined based on the relative relationship with the frequency resources of the D2R control / PDRCH of signal #1 preceding the D2R preamble for signal #2. Furthermore, the frequency resources of the D2R preamble for signal #3 are determined based on the relative relationship with the frequency resources of the D2R control / PDRCH of signal #2 preceding the D2R preamble for signal #3.

[0349] exist Figure 15 In scenario 7, the frequency resources for D2R control / PDRCH are determined based on the relative relationship with the frequency resources of the D2R preamble preceding D2R control / PDRCH.

[0350] In Proposal 5, the A-IoT device determines the frequency resources for D2R transmission A based on the frequency resources of R2D reception (B), D2R transmission (B), or CW reception. Furthermore, in Proposal 5, the A-IoT device determines the frequency resources for CW reception based on the frequency resources of R2D reception (B) or D2R transmission (B). Therefore, since the frequency resources for D2R transmission A and CW reception can be appropriately determined, the transmission and reception channels and / or signals can be appropriately configured, avoiding system performance degradation. Moreover, since the frequency resources for D2R transmission A are determined based on the relative relationship with the frequency resources of R2D reception (B), D2R transmission (B), and CW reception, the signaling overhead for indicating / setting the frequency resources for D2R transmission A can be reduced.

[0351] In addition, in Proposal 5 above, such as Figure 14 Similar to scenarios 1 through 3, the frequency resources for multiple D2R transmitters A can also be determined based on the common frequency resources for R2D receivers B. In this case, the frequency resources for multiple D2R transmitters A can be the same or different. Furthermore, as... Figure 14 Similar to scenario 4, the frequency resources for multiple D2R transmitters A can also be determined based on the common frequency resources for D2R transmitters B. In this case, the frequency resources for multiple D2R transmitters A can be the same or different.

[0352] Furthermore, the same actions as those performed by the A-IoT device in Proposal 5 can also be performed by the reader side (e.g., BS or intermediate UE). For example, the BS or intermediate UE can determine the frequency resources for D2R reception of A based on the frequency resources for R2D transmission of B, D2R reception of B, or CW transmission. And the BS or intermediate UE can also perform D2R reception of A within the determined frequency resources.

[0353] <Proposal 6>

[0354] Proposal 6 describes a method for determining the frequency resource location (frequency location) and a method for determining the frequency resource bandwidth, which are methods for determining the frequency resources for D2R transmission based on R2D reception B, CW reception, or D2R transmission B.

[0355] Furthermore, the following describes, in turn, the cases where the frequency resources for D2R transmission of A are determined based on the frequency resources of R2D reception of B (hereinafter, Case A1), the cases where the frequency resources for D2R transmission of A are determined based on the frequency resources of CW reception (hereinafter, Case A2), and the cases where the frequency resources for D2R transmission of A are determined based on the frequency resources of D2R transmission of B (hereinafter, Case A3). Case A1 corresponds to Proposal 5-1, Case A2 corresponds to Proposal 5-2, and Case A3 corresponds to Proposal 5-3. In addition, the cases where the frequency resources for CW reception are determined based on the frequency resources of R2D reception of B (hereinafter, Case B1) and the cases where the frequency resources for CW reception are determined based on the frequency resources of D2R transmission of B (hereinafter, Case B2) will be described in turn. Case B1 corresponds to Proposal 5-4, and Case B2 corresponds to Proposal 5-5.

[0356] <Proposal 6-1 for Scenario A1: Method for Determining Frequency Position>

[0357] As a first method for determining the frequency position, the frequency position of D2R transmitting A is determined based on the condition that the center point / start point / end point of the frequency position of D2R transmitting A is the same as the center point / start point / end point of the frequency position of R2D receiving B.

[0358] For example, the frequency position for D2R transmission of A is determined based on at least one of the following conditions.

[0359] • The center point of the frequency position of D2R transmitting A is the same as the center point of the frequency position of R2D receiving B.

[0360] The starting point of the frequency position for D2R transmitting A is the same as the starting point of the frequency position for R2D receiving B.

[0361] The end point of the frequency position for transmitting A in D2R is the same as the end point of the frequency position for receiving B in R2D.

[0362] • The center point of the frequency location of D2R transmitting A is the same as the point (e.g., the start point or the end point) of the frequency location of R2D receiving B.

[0363] The starting point of the frequency position for D2R transmitting A is the same as the starting point of the frequency position for R2D receiving B, except for the point (e.g., the center point or the end point).

[0364] • The end point of the frequency position of D2R transmitting A is the same as the point other than the end point of the frequency position of R2D receiving B (e.g., the start point or the center point).

[0365] In the second method for determining the frequency position, the frequency position of D2R transmission A is determined based on the condition that the center point / start point / end point of the frequency position of D2R transmission A is offset relative to the center point / start point / end point of the frequency position of R2D reception B.

[0366] For example, the frequency position for D2R transmission of A is determined based on at least one of the following conditions.

[0367] • The center point of the frequency position of D2R transmitting A is offset relative to the center point of the frequency position of R2D receiving B.

[0368] The starting point of the frequency position of D2R transmitting A is offset relative to the starting point of the frequency position of R2D receiving B.

[0369] The end point of the frequency position of D2R transmitting A is offset relative to the end point of the frequency position of R2D receiving B.

[0370] • The center point of the frequency position of D2R transmitting A is offset from a point other than the center point of the frequency position of R2D receiving B (e.g., the start point or the end point).

[0371] • The starting point of the frequency position of D2R transmitting A is offset from a point other than the starting point of the frequency position of R2D receiving B (e.g., the center point or the end point).

[0372] • The end point of the frequency position of D2R transmitting A is an offset relative to a point other than the end point of the frequency position of R2D receiving B (e.g., the start point or the center point).

[0373] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0374] In addition, the frequency position of D2R transmission A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for R2D reception B.

[0375] <Proposal 6-2 for Scenario A1: Method for determining the bandwidth of frequency resources>

[0376] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources used for D2R transmission of A is determined based on the condition that the bandwidth of the frequency resources used for R2D reception of B is the same. Alternatively, the bandwidth of frequency resources can be expressed in terms of the number of subcarriers, the number of redundancies (RBs), the number of frequency units, or in units such as kHz or MHz.

[0377] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources for D2R transmission A is determined based on the condition that the bandwidth of the frequency resources for D2R transmission A is offset relative to the bandwidth of the frequency resources for R2D reception B. Alternatively, the bandwidth of the frequency resources for D2R transmission A can also be determined through specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources for R2D reception B.

[0378] In addition, the offset in the second method for determining the bandwidth of frequency resources can be fixed by specifications, predetermined in the system, or indicated.

[0379] <Proposal 6-1 for Scenario A2: Method for Determining Frequency Position>

[0380] As a first method for determining the frequency position, the frequency position of D2R transmission of A is determined based on the condition that the center point / start point / end point of the frequency position of D2R transmission of A is the same as the center point / start point / end point of the frequency position of CW reception.

[0381] For example, the frequency position for D2R transmission of A is determined based on at least one of the following conditions.

[0382] • The center point of the frequency position for D2R transmission A is the same as the center point of the frequency position for CW reception.

[0383] • The starting point of the frequency position for D2R transmission of A is the same as the starting point of the frequency position for CW reception.

[0384] • The end point of the frequency position for D2R transmission A is the same as the end point of the frequency position for CW reception.

[0385] • The center point of the frequency location for D2R transmission A is the same as the point other than the center point of the frequency location for CW reception (e.g., the start point or the end point).

[0386] • The starting point of the frequency position for D2R transmission A is the same as the point other than the starting point of the frequency position for CW reception (e.g., the center point or the end point).

[0387] • The end point of the frequency position of D2R transmission A is the same as the point other than the end point of the frequency position of CW reception (e.g., the start point or the center point).

[0388] In the second method for determining the frequency position, the frequency position of D2R transmission A is determined based on the condition that the center point / start point / end point of the frequency position of D2R transmission A is offset relative to the center point / start point / end point of the frequency position of CW reception.

[0389] For example, the frequency position for D2R transmission of A is determined based on at least one of the following conditions.

[0390] • The center point of the frequency position for D2R transmission A is offset relative to the center point of the frequency position for CW reception.

[0391] • The starting point of the frequency position for D2R transmission A is offset relative to the starting point of the frequency position for CW reception.

[0392] • The end point of the frequency position of D2R transmission A is offset relative to the end point of the frequency position of CW reception.

[0393] • The center point of the frequency position for D2R transmission A is offset relative to a point other than the center point of the frequency position for CW reception (e.g., the start point or the end point).

[0394] • The starting point of the frequency position for D2R transmission A is an offset relative to a point other than the starting point of the frequency position for CW reception (e.g., the center point or the end point).

[0395] • The end point of the frequency position of D2R transmission A is an offset relative to a point other than the end point of the frequency position of CW reception (e.g., the start point or center point).

[0396] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0397] In addition, the frequency position of D2R transmission A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the frequency position of CW reception.

[0398] <Proposal 6-2 for Scenario A2: Method for determining the bandwidth of frequency resources>

[0399] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources used for D2R transmission of A is determined based on the condition that the bandwidth of the frequency resources used for CW reception is the same. Alternatively, the bandwidth of frequency resources can be expressed through the number of subcarriers, the number of redundancies (RBs), the number of frequency units, or in units such as kHz or MHz.

[0400] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources for D2R transmission A is determined based on the condition that the bandwidth of the frequency resources for D2R transmission A is an offset relative to the bandwidth of the frequency resources for CW reception. Alternatively, the bandwidth of the frequency resources for D2R transmission A can also be determined through specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources for CW reception.

[0401] In addition, the offset in the second method for determining the bandwidth of frequency resources can be fixed by specifications, predetermined in the system, or indicated.

[0402] <Proposal 6-1 for Scenario A3: Method for Determining Frequency Position>

[0403] As a first method for determining the frequency position, the frequency position of D2R transmission A is determined based on the condition that the center point / start point / end point of the frequency position of D2R transmission A is the same as the center point / start point / end point of the frequency position of D2R transmission B.

[0404] For example, the frequency position for D2R transmission of A is determined based on at least one of the following conditions.

[0405] The center point of the frequency position for D2R transmission of A is the same as the center point of the frequency position for D2R transmission of B.

[0406] The starting point of the frequency position for D2R transmission of A is the same as the starting point of the frequency position for D2R transmission of B.

[0407] The end point of the frequency position for D2R transmission of A is the same as the end point of the frequency position for D2R transmission of B.

[0408] • The center point of the frequency position of D2R transmission A is the same as the point other than the center point of the frequency position of D2R transmission B (e.g., the start point or the end point).

[0409] • The starting point of the frequency position for D2R transmission A is the same as the point other than the starting point of the frequency position for D2R transmission B (e.g., the center point or the end point).

[0410] • The end point of the frequency position of D2R transmission A is the same as the point other than the end point of the frequency position of D2R transmission B (e.g., the start point or the center point).

[0411] In the second method for determining the frequency position, the frequency position of D2R transmission A is determined based on the condition that the center point / start point / end point of the frequency position of D2R transmission A is offset relative to the center point / start point / end point of the frequency position of D2R transmission B.

[0412] For example, the frequency position for D2R transmission of A is determined based on at least one of the following conditions.

[0413] • The center point of the frequency position of D2R transmission A is offset relative to the center point of the frequency position of D2R transmission B.

[0414] The starting point of the frequency position for D2R transmission A is offset relative to the starting point of the frequency position for D2R transmission B.

[0415] The end point of the frequency position of D2R transmission A is offset relative to the end point of the frequency position of D2R transmission B.

[0416] • The center point of the frequency position of D2R transmission A is offset relative to a point other than the center point of the frequency position of D2R transmission B (e.g., the start point or the end point).

[0417] • The starting point of the frequency position of D2R transmission A is offset from a point other than the starting point of the frequency position of D2R transmission B (e.g., the center point or the end point).

[0418] • The end point of the frequency position of D2R transmission A is an offset relative to a point other than the end point of the frequency position of D2R transmission B (e.g., the start point or the center point).

[0419] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0420] In addition, the frequency position of D2R transmission A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the frequency position of D2R transmission B.

[0421] <Proposal 6-2 for Scenario A3: Method for determining the bandwidth of frequency resources>

[0422] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources used for D2R transmission of A is determined based on the condition that the bandwidth of the frequency resources used for D2R transmission of B is the same. Alternatively, the bandwidth of frequency resources can be expressed through the number of subcarriers, the number of redundancies (RBs), the number of frequency units, or in units such as kHz or MHz.

[0423] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources for D2R transmission A is determined based on the condition that the bandwidth of the frequency resources for D2R transmission A is an offset relative to the bandwidth of the frequency resources for D2R transmission B. Alternatively, the bandwidth of the frequency resources for D2R transmission A can also be determined through specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources for D2R transmission B.

[0424] In addition, the offset in the second method for determining the bandwidth of frequency resources can be fixed by specifications, predetermined in the system, or indicated.

[0425] <Proposal 6-1 for Scenario B1: Method for Determining Frequency Position>

[0426] As a first method for determining the frequency location, the frequency location of the CW receiver is determined based on the condition that the center point / start point / end point of the frequency location of the CW receiver is the same as the center point / start point / end point of the frequency location of the R2D receiver B.

[0427] For example, the frequency location for CW reception is determined based on at least one of the following conditions.

[0428] The center point of the frequency position of the CW receiver is the same as the center point of the frequency position of the R2D receiver B.

[0429] The starting point of the frequency position for CW reception is the same as the starting point of the frequency position for R2D reception B.

[0430] The end point of the frequency position for CW reception is the same as the end point of the frequency position for R2D reception B.

[0431] • The center point of the frequency location of the CW receiver is the same as the point other than the center point of the frequency location of the R2D receiver B (e.g., the start point or the end point).

[0432] The starting point of the frequency position for CW reception is the same as the point other than the starting point of the frequency position for R2D reception B (e.g., the center point or the end point).

[0433] • The end point of the frequency position of the CW receiver is the same as the point other than the end point of the frequency position of the R2D receiver B (e.g., the start point or the center point).

[0434] In the second method for determining the frequency position, the frequency position of the CW receiver is determined based on the condition that the center point / start point / end point of the frequency position of the CW receiver is offset relative to the center point / start point / end point of the frequency position of the R2D receiver B.

[0435] For example, the frequency location for CW reception is determined based on at least one of the following conditions.

[0436] • The center point of the frequency position of the CW receiver is offset relative to the center point of the frequency position of the R2D receiver B.

[0437] • The starting point of the frequency position of the CW receiver is offset relative to the starting point of the frequency position of the R2D receiver B.

[0438] • The end point of the frequency position of the CW receiver is the offset relative to the end point of the frequency position of the R2D receiver B.

[0439] • The center point of the frequency position of the CW receiver is offset from a point other than the center point of the frequency position of the R2D receiver B (e.g., the start point or the end point).

[0440] • The starting point of the frequency position of the CW receiver is an offset from a point other than the starting point of the frequency position of the R2D receiver B (e.g., the center point or the end point).

[0441] • The end point of the frequency position of the CW receiver is an offset from a point other than the end point of the frequency position of the R2D receiver B (e.g., the start point or the center point).

[0442] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0443] In addition, the frequency position of the CW receiver can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the frequency position of the R2D receiver B.

[0444] <Proposal 6-2 for Scenario B1: Method for determining the bandwidth of frequency resources>

[0445] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources for CW reception is determined based on the condition that the bandwidth of the frequency resources for CW reception is the same as the bandwidth of the frequency resources for R2D reception. Alternatively, the bandwidth of frequency resources can be expressed in terms of the number of subcarriers, the number of redundancies (RBs), the number of frequency units, or in units such as kHz or MHz.

[0446] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources received by CW is determined based on the condition that the bandwidth of the frequency resources received by CW is an offset relative to the bandwidth of the frequency resources received by R2D receiver B. Alternatively, the bandwidth of the frequency resources received by CW can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources received by R2D receiver B.

[0447] In addition, the offset in the second method for determining the bandwidth of frequency resources can be fixed by specifications, predetermined in the system, or indicated.

[0448] <Proposal 6-1 for Scenario B2: Method for Determining Frequency Position>

[0449] As a first method for determining the frequency location, the frequency location of CW reception is determined based on the condition that the center point / start point / end point of the frequency location of CW reception is the same as the center point / start point / end point of the frequency location of D2R transmission B.

[0450] For example, the frequency location for CW reception is determined based on at least one of the following conditions.

[0451] • The center point of the frequency location received by CW is the same as the center point of the frequency location transmitted by D2R B.

[0452] • The starting point of the frequency position for CW reception is the same as the starting point of the frequency position for D2R transmission of B.

[0453] • The end point of the frequency position received by CW is the same as the end point of the frequency position transmitted by D2R B.

[0454] • The center point of the frequency location received by CW is the same as the point other than the center point of the frequency location transmitted by D2R B (e.g., the start point or the end point).

[0455] • The starting point of the frequency position received by CW is the same as the point other than the starting point of the frequency position transmitted by D2R (e.g., the center point or the end point).

[0456] • The end point of the frequency position received by CW is the same as the point other than the end point of the frequency position transmitted by D2R (e.g., the start point or the center point).

[0457] In the second method for determining the frequency position, the frequency position for CW reception is determined based on the condition that the center point / start point / end point of the frequency position for CW reception is offset relative to the center point / start point / end point of the frequency position for D2R transmission B.

[0458] For example, the frequency location for CW reception is determined based on at least one of the following conditions.

[0459] • The center point of the frequency position received by CW is offset relative to the center point of the frequency position of D2R transmitted by B.

[0460] • The starting point of the frequency position for CW reception is offset from the starting point of the frequency position for D2R transmission B.

[0461] • The end point of the frequency position received by CW is offset relative to the end point of the frequency position transmitted by D2R B.

[0462] • The center point of the frequency position received by CW is offset from a point other than the center point of the frequency position of D2R transmitted by B (e.g., the start point or the end point).

[0463] • The starting point of the frequency position for CW reception is an offset from a point other than the starting point of the frequency position for D2R transmission B (e.g., the center point or the end point).

[0464] • The end point of the frequency position received by CW is an offset from a point other than the end point of the frequency position of D2R transmitted by B (e.g., the start point or the center point).

[0465] In addition, the offset in the second method of determining the frequency position can be fixed by a specification, predetermined in the system, or indicated.

[0466] In addition, the frequency position of CW reception can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the frequency position of D2R transmission B.

[0467] <Proposal 6-2 for Scenario B2: Method for determining the bandwidth of frequency resources>

[0468] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources received by CW is determined based on the condition that the bandwidth of the frequency resources for CW reception is the same as the bandwidth of the frequency resources for D2R transmission of B. Alternatively, the bandwidth of frequency resources can be expressed in terms of the number of subcarriers, the number of RBs, the number of frequency units, or in units such as kHz or MHz.

[0469] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources received by CW is determined based on the condition that the bandwidth of the frequency resources received by CW is an offset relative to the bandwidth of the frequency resources transmitted by D2R B. Alternatively, the bandwidth of the frequency resources received by CW can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources transmitted by D2R B.

[0470] In addition, the offset in the second method for determining the bandwidth of frequency resources can be fixed by specifications, predetermined in the system, or indicated.

[0471] In Proposal 6, the A-IoT device determines the location of the frequency resource for D2R transmission A to be the same as, or determined based on, the frequency resource of R2D reception B, CW reception B, or D2R transmission B. Furthermore, in Proposal 6, the A-IoT device determines the bandwidth of the frequency resource for D2R transmission A to be the same as, or determined based on, the bandwidth of the frequency resource of R2D reception B, CW reception B, or D2R transmission B. Therefore, since the frequency resource for D2R transmission A can be appropriately determined, the transmission and reception channels and / or signals can be appropriately transmitted, avoiding system performance degradation. Moreover, since the frequency resource for D2R transmission A is determined based on its relative relationship with other frequency resources, the signaling overhead for indicating / setting the frequency resource for D2R transmission A can be reduced.

[0472] Furthermore, in Proposal 6, the A-IoT device determines the location of the frequency resource for CW reception to be the same as, or determined based on, the frequency resource of either R2D receiver B or D2R transmitter B. Additionally, in Proposal 6, the A-IoT device determines the bandwidth of the frequency resource for CW reception to be the same as, or determined based on, the bandwidth of either R2D receiver B or D2R transmitter B. Therefore, since the frequency resource for CW reception can be appropriately determined, the transmission and reception channels and / or signals can be appropriately transmitted and received, avoiding system performance degradation. Furthermore, since the frequency resource for CW reception is determined based on its relative relationship with other frequency resources, the signaling overhead for indicating / setting the frequency resource for CW reception can be reduced.

[0473] <Proposal 7>

[0474] Proposal 7 specifies the bandwidth for D2R transmission. Furthermore, the resources used for D2R transmission are included in this bandwidth (hereinafter referred to as D2R bandwidth). Proposal 7 also describes a method for determining the frequency location of a band having D2R bandwidth. Additionally, in the following description, "D2R bandwidth" corresponds to a band having D2R bandwidth and capable of D2R transmission.

[0475] The frequency position of the D2R bandwidth is determined by reference to the R2D preamble / R2D control / PRDCH / D2R preamble / D2R control / PDRCH / R2D bandwidth. For example, the frequency position of the D2R bandwidth can also be determined by an A-IoT device. Furthermore, the R2D preamble / R2D control / PRDCH / D2R preamble / D2R control / PDRCH / R2D bandwidth is equivalent to at least one of the following: R2D preamble, R2D control, PRDCH, D2R preamble, D2R control, PDRCH, and R2D bandwidth. Additionally, the R2D preamble / R2D control / PRDCH is shown in Proposal 2, the D2R preamble / D2R control / PDRCH is shown in Proposal 5, and the R2D bandwidth is shown in Proposal 4. Moreover, the frequency position of the D2R bandwidth can also refer only to the D2R bandwidth.

[0476] For example, similar to Proposal 6-1, the frequency position of the D2R bandwidth can also be determined. Exemplarily, as a first method for determining the frequency position of the D2R bandwidth, the frequency position of the D2R bandwidth is determined based on the condition that the center point / start point / end point of the frequency position of the D2R bandwidth is the same as the center point / start point / end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0477] For example, the frequency location of the D2R bandwidth is determined based on at least one of the following conditions.

[0478] The center point of the frequency position of the D2R bandwidth is the same as the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0479] The starting point of the frequency position of the D2R bandwidth is the same as the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0480] The end point of the frequency position of the D2R bandwidth is the same as the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0481] The center point of the frequency position of the D2R bandwidth is the same as the point other than the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth (e.g., the start point or the end point).

[0482] The starting point of the frequency position of the D2R bandwidth is the same as the point other than the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth (e.g., the center point or the end point).

[0483] The end point of the frequency position of the D2R bandwidth is the same as the point other than the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth (e.g., the start point or center point).

[0484] As a second method for determining the frequency position of the D2R bandwidth, the frequency position of the D2R bandwidth is determined based on the condition that the center point / start point / end point of the frequency position of the D2R bandwidth is offset relative to the center point / start point / end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0485] For example, the frequency location of the D2R bandwidth is determined based on at least one of the following conditions.

[0486] The center point of the frequency position of the D2R bandwidth is the offset relative to the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0487] The starting point of the frequency position of the D2R bandwidth is the offset relative to the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0488] The end point of the frequency position of the D2R bandwidth is the offset relative to the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth.

[0489] • The center point of the frequency position of the D2R bandwidth is an offset from a point other than the center point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth (e.g., the start point or the end point).

[0490] • The starting point of the frequency position of the D2R bandwidth is an offset from a point other than the starting point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth (e.g., the center point or the end point).

[0491] • The end point of the frequency position of the D2R bandwidth is an offset from the end point of the frequency position of the reference R2D preamble / reference R2D control / reference PRDCH / reference D2R preamble / reference D2R control / reference PDRCH / R2D bandwidth (e.g., the start point or center point).

[0492] In addition, the offset in the second method can be fixed by a specification, predetermined in the system, or indicated.

[0493] In Proposal 7, the A-IoT device determines the location of the D2R bandwidth, which includes the frequency resources for D2R transmission A, based on the frequency resources of R2D reception B / D2R transmission B. Therefore, since the frequency resources for D2R transmission A can be appropriately determined, the transmission and reception channels and / or signals can be appropriately configured, avoiding system performance degradation. Furthermore, since the frequency resources for D2R transmission A are determined based on the relative relationship with the frequency resources of R2D reception B / D2R transmission B, the overhead of signaling used to indicate / set the frequency resources for D2R transmission A can be reduced.

[0494] <Proposal 8>

[0495] Proposal 8 shows that the frequency resources for a certain R2D reception are determined based on the frequency resources for D2R transmission.

[0496] The frequency resources for R2D reception of A are determined by the A-IoT device based on their relative relationship with the frequency resources for D2R transmission of B. In other words, the A-IoT device determines the frequency resources for R2D reception of A based on the frequency resources for D2R transmission of B. Alternatively, the A-IoT device determines the frequency resources for R2D reception of A with reference to the frequency resources for D2R transmission of B. Or, the A-IoT device determines the frequency resources for R2D reception of A in association with the frequency resources for D2R transmission of B.

[0497] Additionally, R2D receiver A in Proposal 8 may include at least any of the following. For example, the frequency resources of R2D receiver A correspond to frequency resources used for receiving at least any of the following.

[0498] R2D preamble

[0499] ·R2D guide code

[0500] R2D postcode

[0501] R2D control

[0502] ·PRDCH

[0503] Furthermore, the D2R transmission B in Proposal 8 may include at least one of the following. For example, the frequency resources of the D2R transmission B correspond to frequency resources used for transmission of at least one of the following.

[0504] • Refer to D2R preamble

[0505] • Reference D2R control

[0506] ·Reference PDRCH

[0507] • D2R preamble / D2R inode / D2R postode / D2R control / PDRCH

[0508] • D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH before or immediately before receiving A in R2D.

[0509] • The last D2R preamble / D2R introductory / D2R postamble / D2R control / PDRCH sent before receiving A in R2D

[0510] In Proposal 8, the A-IoT device determines the frequency resources for R2D reception (A) based on the frequency resources of D2R transmission (B). Therefore, since the frequency resources for R2D reception (A) can be appropriately determined, the transmission and reception channels and / or signals can be appropriately configured, avoiding system performance degradation. Furthermore, since the frequency resources for R2D reception (A) are determined based on the relative relationship with the frequency resources of D2R transmission (B), the overhead of signaling used to indicate / set the frequency resources for R2D reception (A) can be reduced.

[0511] Furthermore, in Proposal 8 above, the frequency resources for multiple R2D receivers A can also be determined based on the common frequency resources for D2R transmitters B. In this case, the frequency resources for multiple R2D receivers A can be the same or different.

[0512] Furthermore, the same operations as those performed by the A-IoT device in Proposal 8 can also be performed by the reader side (e.g., the BS or intermediate UE). For example, the BS or intermediate UE can determine the frequency resources for R2D transmission of A based on the frequency resources of D2R reception of B. And the BS or intermediate UE can also perform R2D transmission of A within the determined frequency resources.

[0513] <Options for Proposal 8>

[0514] As a method for determining the frequency resources of R2D receiving A based on the frequency resources of D2R transmitting B, the method for determining the location (frequency location) of the frequency resources and the method for determining the bandwidth of the frequency resources are explained.

[0515] <Option 1 of Proposal 8: Method for determining frequency position>

[0516] As a first method for determining the frequency position, the frequency position of R2D receiver A is determined based on the condition that the center point / start point / end point of the frequency position of R2D receiver A is the same as the center point / start point / end point of the frequency position of D2R transmitter B.

[0517] For example, the frequency position of R2D receiver A is determined based on at least one of the following conditions.

[0518] The center point of the frequency position of R2D receiving A is the same as the center point of the frequency position of D2R transmitting B.

[0519] The starting point of the frequency position of R2D receiving A is the same as the starting point of the frequency position of D2R transmitting B.

[0520] The end point of the frequency position of R2D receiving A is the same as the end point of the frequency position of D2R transmitting B.

[0521] • The center point of the frequency location of R2D receiver A is the same as the point (e.g., the start point or the end point) of the frequency location of D2R transmitter B.

[0522] The starting point of the frequency position of R2D receiving A is the same as the starting point of the frequency position of D2R transmitting B (e.g., the center point or the end point).

[0523] • The end point of the frequency position of R2D receiving A is the same as the point other than the end point of the frequency position of D2R transmitting B (e.g., the start point or the center point).

[0524] As a second method for determining the frequency position, the frequency position of R2D receiver A is determined based on the condition that the center point / start point / end point of the frequency position of R2D receiver A is offset relative to the center point / start point / end point of the frequency position of D2R transmitter B.

[0525] For example, the frequency position of R2D receiver A is determined based on at least one of the following conditions.

[0526] • The center point of the frequency position of R2D receiver A is offset relative to the center point of the frequency position of D2R transmitter B.

[0527] The starting point of the frequency position of R2D receiver A is offset relative to the starting point of the frequency position of D2R transmitter B.

[0528] The end point of the frequency position of R2D receiving A is offset relative to the end point of the frequency position of D2R transmitting B.

[0529] • The center point of the frequency position of R2D receiver A is offset from a point other than the center point of the frequency position of D2R transmitter B (e.g., the start point or the end point).

[0530] • The starting point of the frequency position of R2D receiver A is an offset from a point other than the starting point of the frequency position of D2R transmitter B (e.g., the center point or the end point).

[0531] • The end point of the frequency position of R2D receiver A is an offset from the end point of the frequency position of D2R transmitter B (e.g., the start point or center point).

[0532] In addition, the offset in the second method can be fixed by a specification, predetermined in the system, or indicated.

[0533] In addition, the frequency position of R2D receiver A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the frequency position of D2R transmitter B.

[0534] <Option 2 of Proposal 8: Method for determining the bandwidth of frequency resources>

[0535] As a primary method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources for R2D reception A is determined based on the condition that the bandwidth of the frequency resources for R2D reception A is the same as the bandwidth of the frequency resources for D2R transmission B. Alternatively, the bandwidth of frequency resources can be expressed in terms of the number of subcarriers, the number of redundancies (RBs), the number of frequency units, or in units such as kHz or MHz.

[0536] As a second method for determining the bandwidth of frequency resources, the bandwidth of the frequency resources for R2D receiver A is determined based on the condition that the bandwidth of the frequency resources for R2D receiver A is offset relative to the bandwidth of the frequency resources for D2R transmitter B. Alternatively, the bandwidth of the frequency resources for R2D receiver A can also be determined by specific operations (e.g., multiplying by a coefficient, dividing by a coefficient, etc.) for the bandwidth of the frequency resources for D2R transmitter B.

[0537] In addition, the offset in the second method can be fixed by a specification, predetermined in the system, or indicated.

[0538] <Changes>

[0539] For the above proposals and their options, different methods can also be applied for each type of A-IoT device (e.g., different proposals and / or different options of the proposals). For example, the type of device that transmits via a carrier wave (CW) – i.e., the backscatter of an unmodulated wave – can also use the methods for determining the frequency resources for CW reception, such as Proposal 5-4 and Proposal 5-5.

[0540] For the above proposals and their options, different methods can be applied for different topologies (e.g., different proposals and / or different options of the proposals). For example, different methods can be applied depending on whether the reader is a BS or an intermediate UE (e.g., different proposals and / or different options of the proposals). Alternatively, different methods can be applied depending on whether the CW is provided from outside the topology (e.g., different proposals and / or different options of the proposals).

[0541] For each of the above proposals and their options, different methods can be applied depending on the type of R2D reception. Furthermore, the type of R2D reception can be the type of signal received, or it can be a difference between the R2D reader and the intermediate UE.

[0542] For each of the above proposals and their options, different methods can be applied depending on the type of D2R transmission. Furthermore, the type of D2R transmission can be the type of signal transmitted by the D2R service provider, or it can be a difference between the reader transmitting the D2R transmission and the intermediate UE.

[0543] In this disclosure, A / B may also mean at least one of A and B. In this disclosure, "A / B / C" may also mean "at least one of A, B and C".

[0544] In this disclosure, higher-level signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

[0545] MAC signaling can also use MAC Control Element (MAC CE) or MAC Protocol Data Unit (PDU). Broadcast information can also be Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), or Other System Information (OSI).

[0546] Physical layer signaling can also be, for example, downlink control information (DCI).

[0547] Next, the structures of base station 10 and device 20 will be described. Furthermore, the structures of base station 10 and device 20 described below illustrate one example of the functions associated with this embodiment. Base station 10 and device 20 may also have functions not shown. Moreover, the functional divisions and / or names of functional units are not limited as long as the function performs the operations involved in this embodiment.

[0548] <Base station structure>

[0549] Figure 16 This is a block diagram illustrating an example of the structure of a base station 10 according to an embodiment. The base station 10 includes, for example, a transmitting unit 101, a receiving unit 102, and a control unit 103. The base station 10 communicates wirelessly with device 20 (see reference 103). Figure 17 The base station 10 can also be a terminal (an intermediate UE that communicates with the device 20) or a CW node.

[0550] The transmitting unit 101 transmits a downlink (DL) signal to the device 20. For example, the transmitting unit 101 transmits the DL signal under the control of the control unit 103.

[0551] The DL signal may include, for example, downlink data signals and control information (e.g., DCI (Downlink Control Information)). Furthermore, the DL signal may include scheduling information related to signal transmission by device 20 (e.g., UL authorization). Additionally, the DL signal may also include higher-layer control information (e.g., RRC (Radio Resource Control) control information). Furthermore, the DL signal may also include reference signals.

[0552] The channels used for transmitting DL signals may include, for example, data channels and control channels. For instance, the data channel may include a PDSCH (Physical Downlink Shared Channel), and the control channel may include a PDCCH (Physical Downlink Control Channel). For example, base station 10 uses the PDCCH to transmit control information and the PDSCH to transmit downlink data signals for device 20.

[0553] The reference signals included in the DL signal may include at least one of the following: DMRS (Demodulation Reference Signal), PTRS (Phase Tracking Reference Signal), CSI-RS (Channel State Information-Reference Signal), SRS (Sounding Reference Signal), and PRS (Positioning Reference Signal) for location information. For example, reference signals such as DMRS and PTRS are used for demodulation of downlink data signals and are transmitted using PDSCH.

[0554] The receiving unit 102 receives uplink (UL) signals transmitted from the device 20. For example, the receiving unit 102 receives UL signals under the control of the control unit 103.

[0555] The control unit 103 controls the communication operations of the base station 10, which includes the transmission processing of the transmission unit 101 and the reception processing of the reception unit 102. For example, the control unit 103 performs operations other than transmission and reception as described in the above embodiments (in addition, these operations may also be performed by the reception unit 102 and / or the transmission unit 101).

[0556] For example, control unit 103 acquires data and control information from higher layers and outputs it to transmission unit 101. Furthermore, control unit 103 outputs data and control information received from receiving unit 102 to higher layers.

[0557] For example, the control unit 103 allocates resources (or channels) used for transmitting and receiving DL signals and / or UL signals based on signals received from the device 20 (e.g., data and control information) and / or data and control information obtained from higher layers. Information related to the allocated resources may be included in the control information sent to the device 20.

[0558] As an example of resource allocation used in the transmission and reception of UL signals, the control unit 103 sets the PUCCH resources. Information related to the PUCCH setting, such as the PUCCH cell timing pattern (PUCCH setting information), can be notified to the device 20 via RRC.

[0559] Here, the transmitting unit 101 and the receiving unit 102 (which can also be collectively referred to as the communication unit) communicate with the device 20.

[0560] For example, the transmitting unit 101 can also send information related to the frequency resources used in the communication involving the A-IoT device to the device 20, etc.

[0561] In addition, for example, the communication unit can also use the aforementioned frequency resources to conduct communication involving A-IoT devices.

[0562] For example, the transmitting unit 101 can also transmit R2D under the control of the control unit 103, and the receiving unit 102 can also receive D2R under the control of the control unit 103. For example, R2D transmission includes transmitting at least one of the aforementioned R2D preamble, R2D introductory code, R2D postcode, R2D control, and PDRCH. Furthermore, for example, D2R reception includes receiving at least one of the following: D2R preamble, R2D introductory code, R2D postcode, D2R control, and PDRCH. The control of the control unit 103 includes determining the resources used for transmission or reception.

[0563] For example, the communication unit of the base station 10 (an example of a wireless communication device) according to this embodiment performs R2D transmission (an example of transmitting a first signal) or D2R reception (an example of receiving a second signal) on the first frequency resource. Furthermore, the control unit 103 of the base station 10 determines the second frequency resource for R2D transmission (an example of transmitting a third signal) based on the first frequency resource.

[0564] For example, the communication unit of the base station 10 (an example of a wireless communication device) according to this embodiment performs R2D transmission (an example of transmitting a first signal) or D2R reception (an example of receiving a second signal) on the first frequency resource. Furthermore, the control unit 103 of the base station 10 determines the second frequency resource for D2R reception (an example of receiving a third signal) based on the first frequency resource.

[0565] <Equipment Structure>

[0566] Figure 17 This is a block diagram illustrating an example of the structure of the device 20 according to an embodiment. The device 20 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. The device 20 communicates with the base station 10 wirelessly, for example. The device 20 may also be a terminal (e.g., an intermediate UE) or a CW node.

[0567] The receiving unit 201 receives the DL signal transmitted from the base station 10. For example, the receiving unit 201 receives the DL signal under the control of the control unit 203.

[0568] The transmitting unit 202 transmits a UL signal to the base station 10. For example, the transmitting unit 202 transmits the UL signal under the control of the control unit 203.

[0569] The UL signal may include, for example, uplink data signals and control information (e.g., UCI (Uplink Control Information)). For instance, it may include information related to the processing capabilities of device 20 (e.g., A-IoT capability). Furthermore, the UL signal may also include reference signals.

[0570] The channels used in transmitting UL signals may include, for example, data channels and control channels. For instance, the data channel may include a PUSCH (Physical Uplink Shared Channel), and the control channel may include a PUCCH (Physical Uplink Control Channel). For example, device 20 uses the PUCCH to transmit control information to base station 10 and uses the PUSCH to transmit uplink data signals.

[0571] The reference signals included in the UL signal may include at least one of DMRS, PTRS, CSI-RS, SRS, and PRS. For example, reference signals such as DMRS and PTRS are used for demodulation of uplink data signals and are transmitted using an uplink channel (e.g., PUSCH).

[0572] The control unit 203 controls the communication operations of the device 20, which includes the receiving processing in the receiving unit 201 and the transmitting processing in the transmitting unit 202. For example, the control unit 203 performs operations other than transmitting and receiving as described in the above embodiments (in addition, these operations may also be performed by the receiving unit 201 and / or the transmitting unit 202).

[0573] For example, control unit 203 acquires data and control information from higher layers and outputs it to transmitting unit 202. Furthermore, control unit 203 may output data and control information received from receiving unit 201 to higher layers, for example.

[0574] For example, control unit 203 controls the transmission of information fed back to base station 10. The information fed back to base station 10 may include, for example, HARQ ACK / NACK, Channel State Information (CSI), and Scheduling Request (SR). The information fed back to base station 10 may also be included in UCI. UCI is transmitted, for example, within the resources of PUCCH.

[0575] The control unit 203 configures the PUCCH resources based on the configuration information received from the base station 10 (e.g., configuration information such as the PUCCH cell timing mode notified via RRC and / or DCI). The control unit 203 determines the PUCCH resources used in transmitting the information fed back to the base station 10. The transmitting unit 202, under the control of the control unit 203, transmits the information fed back to the base station 10 using the PUCCH resources determined by the control unit 203.

[0576] Furthermore, the channels used in transmitting DL signals and UL signals are not limited to the examples described above. For instance, the channels used in transmitting DL signals and UL signals may include RACH (Random Access Channel) and PBCH (Physical Broadcast Channel). RACH, for example, can be used for transmitting DCIs that include RA-RNTI (Random Access Radio Network Temporary Identifier).

[0577] Here, the receiving unit 201 and the transmitting unit 202 (which can also be collectively referred to as the communication unit) communicate with the base station 10, intermediate UEs, and other networks.

[0578] For example, receiving unit 201 can also perform R2D reception under the control of control unit 203, and transmitting unit 202 can also perform D2R transmission under the control of control unit 203. For example, R2D reception includes receiving at least one of the aforementioned R2D preamble, R2D introductory code, R2D postcode, R2D control, and PDRCH. Furthermore, for example, D2R transmission includes transmitting at least one of the following: D2R preamble, R2D introductory code, R2D postcode, D2R control, and PDRCH. Control of control unit 203 includes determining the resources used for transmission or reception.

[0579] For example, the communication unit of the device 20 according to this embodiment performs R2D reception (an example of receiving a first signal) or D2R transmission (an example of transmitting a second signal) on the first frequency resource. Furthermore, the control unit 203 of the device 20 determines a second frequency resource for R2D reception (an example of receiving a third signal) based on the first frequency resource.

[0580] For example, the communication unit of the device 20 according to this embodiment performs R2D reception (an example of receiving a first signal) or D2R transmission (an example of transmitting a second signal) on the first frequency resource. Furthermore, the control unit 203 of the device 20 determines a second frequency resource for D2R transmission (an example of transmitting a third signal) based on the first frequency resource.

[0581] The above provides an explanation of this disclosure. Furthermore, the division of items in the above explanation is not essential in this disclosure; items described in two or more items may be combined as needed, and items described in one item may be applied to items described in other items (as long as there is no contradiction).

[0582] <Hardware structure, etc.>

[0583] The block diagrams used in the description of the above embodiments illustrate functional units. These functional blocks (structural units) are implemented through any combination of at least one of hardware and software. Furthermore, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented using a single device that is physically or logically combined, or by directly or indirectly (e.g., wired, wireless, etc.) connecting two or more physically or logically separate devices, and implementing it using these multiple devices. A functional block can also be implemented by combining the aforementioned single device or multiple devices with software.

[0584] The functions include judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, receiving, sending, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning, but are not limited to these. For example, the functional block (structural unit) that implements the sending function is called a transmitting unit or a transmitter. Both are described above, and the implementation method is not particularly limited.

[0585] For example, the base station, device, etc. in one embodiment of this disclosure can also function as a computer for processing the wireless communication method of this disclosure. Figure 18 This diagram illustrates an example of the hardware structure of the base station and device involved in the implementation. The base station 10 and device 20 described above can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0586] Additionally, in the following description, the term "device" can be replaced with circuit, device, unit, etc. The hardware structure of base station 10 and device 20 can be configured to include one or more of the devices shown in the figure, or it can be configured to exclude some of the devices.

[0587] Regarding the various functions in base station 10 and device 20, specific software (programs) are read into hardware such as processor 1001 and memory 1002, so that processor 1001 performs calculations and controls communication based on communication device 1004, or controls at least one of reading out and writing data in memory 1002 and storage device 1003, thereby achieving the following:

[0588] The processor 1001 enables the operating system to operate and control the computer as a whole. The processor 1001 may also be a central processing unit (CPU) comprising interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the control unit 103 and control unit 203 described above may also be implemented by the processor 1001.

[0589] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and performs various processes accordingly. As a program, a program that causes the computer to perform at least a portion of the operations described in the above embodiments can be used. For example, the control unit 103 of the base station 10 and the control unit 203 of the device 20 can also be implemented by control programs stored in the memory 1002 and operated by the processor 1001; similarly, other functional blocks can be implemented. The various processes described above have been explained as being executed by one processor 1001, but they can also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be implemented using more than one chip. Additionally, the program can be transmitted from a network via an electrical communication line.

[0590] The memory 1002 is a computer-readable recording medium, and may be composed of at least one of the following: ROM (Read-Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory). The memory 1002 may also be referred to as a register, cache, main memory (main storage device), etc. The memory 1002 can store executable programs (program code), software modules, etc., for implementing the wireless communication method according to an embodiment of this disclosure.

[0591] Storage 1003 is a computer-readable recording medium, and may be comprised of at least one of the following: CD-ROM (Compact Disc ROM) or other optical discs; hard disk drives; flexible discs; optical discs (e.g., compact discs, digital multifunction discs, Blu-ray discs); smart cards; flash memory (e.g., cards, sticks, key drives); floppy disks; magnetic stripes; etc. Storage 1003 may also be referred to as an auxiliary storage device. The aforementioned storage medium may also be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0592] The communication device 1004 is hardware (transmitting and receiving device) used for communication between computers via at least one of a wired network and a wireless network. It is also referred to as a network device, network controller, network interface card (NIC), communication module, etc. To implement at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the aforementioned transmitting unit 101, receiving unit 102, receiving unit 201, and transmitting unit 202 can also be implemented using the communication device 1004.

[0593] Input device 1005 is an input device that accepts input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). Output device 1006 is an output device that performs output to external sources (e.g., display, speaker, LED light, etc.). Alternatively, input device 1005 and output device 1006 can also be an integrated structure (e.g., touch panel).

[0594] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 can be configured using a single bus or different buses between the devices.

[0595] Furthermore, the base station 10 and the device 20 can also be configured with hardware including microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), FPGAs (Field Programmable Gate Arrays), etc., and can also implement some or all of the functional blocks through such hardware. For example, the processor 1001 can also be implemented using at least one of these hardware components.

[0596] <Information notification and signaling>

[0597] The notification of information is not limited to the implementation methods described in this disclosure, and can also be performed by other methods. For example, the notification of information can also be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Media Access Control) signaling, broadcast information (MIB (Master Information Block)), SIB (System Information Block)), other signals, or combinations thereof. In addition, RRC signaling can also be referred to as RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0598] <Application Systems>

[0599] The implementations described in this disclosure can also be applied to LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), FRA (Future Radio Access), NR (New Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE At least one of 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), systems utilizing other suitable systems, and next-generation systems derived from them through enhancement, modification, creation, or specification. Furthermore, multiple systems may be combined (e.g., a combination of LTE and at least one of LTE-A with 5G, etc.) for application.

[0600] <Processing procedures, etc.>

[0601] The processing procedures, timing, flowcharts, etc., of the various methods / implementations described in this disclosure may be rearranged as long as they do not contradict each other. For example, for the methods described in this disclosure, an illustrative order is used to indicate the elements of various steps, but the order in which they are indicated is not limited.

[0602] <Base Station Operation>

[0603] In this disclosure, specific operations purported to be performed by a base station may sometimes be performed by its upper node, depending on the circumstances. Clearly, in a network consisting of one or more network nodes having a base station, various operations performed for communication with a terminal can also be performed by at least one of the base station and other network nodes besides the base station (e.g., consider MME or S-GW, but not limited to these). In the above, other network nodes besides the base station are exemplified as one case, but it could also be a combination of multiple other network nodes (e.g., MME and S-GW).

[0604] <Direction of input / output>

[0605] Information (see the items under "Information, Signals") can also be output from higher (or lower) layers to lower (or higher) layers. It can also be input and output via multiple network nodes.

[0606] <Processing of input and output information>

[0607] Input and output information can be stored in a specific location (e.g., memory) or managed using a management table. Input and output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0608] <Judgment Method>

[0609] The determination can be made by a value represented by a single bit (0 or 1), by a true or false value (Boolean: true or false), or by a numerical comparison (e.g., a comparison with a specific value).

[0610] <Changes in methods, etc.>

[0611] The various methods / implementations described in this disclosure can be used individually or in combination, and can be switched as needed during execution. Furthermore, notification of specific information (e.g., a "It is X" notification) is not limited to explicit notification, but can also be done implicitly (e.g., without notifying the recipient of that specific information).

[0612] The present disclosure has been described in detail above, but it will be apparent to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented with modifications and variations without departing from the spirit and scope defined by the claims. Therefore, the description in this disclosure is for illustrative purposes and is not intended to be restrictive in any way.

[0613] <Software>

[0614] Whether software is called software, firmware, middleware, microcode, hardware description language, or any other name, it should be broadly interpreted to refer to instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0615] Furthermore, software, instructions, and information can also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of transmission medium.

[0616] <Information, Signals>

[0617] The information, signals, etc., described in this disclosure can also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be mentioned throughout the above description, can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0618] Furthermore, the terms described in this disclosure, as well as those necessary for understanding this disclosure, may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and the symbol may also be a signal (signaling). Additionally, a signal may also be a message. Furthermore, a component carrier (CC) may also be referred to as a carrier frequency, cell, frequency carrier, etc.

[0619] <Systems, Networks>

[0620] The terms “system” and “network” are used interchangeably in this disclosure.

[0621] <Parameters, Channel Name>

[0622] Furthermore, the information, parameters, etc., described in this disclosure can be represented by absolute values, relative values ​​with respect to a specific value, or other corresponding information. For example, wireless resources can also be indicated by an index.

[0623] The names used for the parameters described above are not limiting names in any respect. Furthermore, the mathematical expressions using these parameters sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name; therefore, the various names assigned to these various channels and information elements are not limiting names in any respect.

[0624] <Base Station>

[0625] In this disclosure, the terms "base station (BS)," "wireless base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" are used interchangeably. There are also instances where terms such as macro cell, small cell, femtocell, and picocell are used to refer to base stations.

[0626] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the base station and base station subsystem providing communication services within that coverage area.

[0627] In this disclosure, the information sent by the base station to the terminal can also be rewritten as the base station instructing the terminal to perform information-based control and operation.

[0628] <Mobile Station>

[0629] In this disclosure, the terms “Mobile Station (MS),” “user terminal,” “user equipment (UE),” and “terminal” are used interchangeably.

[0630] There are also instances where a mobile station is referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or several other appropriate terms.

[0631] <Base station / Mobile station>

[0632] At least one of the base station and the mobile station can also be referred to as a transmitting device, a receiving device, a communication device, etc. Furthermore, at least one of the base station and the mobile station can also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object whose speed of movement is arbitrary. This also includes situations where the mobile body is stationary. Examples of mobile bodies include vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trailers, rickshaws, ships (boats and other watercraft), airplanes, rockets, artificial satellites, drones (registered trademark), multi-rotor aircraft, quadcopter aircraft, balloons, and objects mounted on them, and are not limited to these. Furthermore, the mobile body can also be a mobile body that moves autonomously based on operating commands. It can be a means of transportation (e.g., vehicles, airplanes, etc.), a mobile body that moves unmanned (e.g., drones, autonomous vehicles, etc.), or a robot (humanized or unmanned). In addition, at least one of the base station and the mobile station also includes a device that is not necessarily mobile during communication operations. For example, at least one of the base station and the mobile station can also be an Internet of Things (IoT) device such as a sensor.

[0633] Furthermore, the base station in this disclosure can also be rewritten as a terminal. For example, embodiments of this disclosure can also be applied to structures where communication between the base station and the terminal is replaced by communication between multiple terminals (e.g., also referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, it can also be configured such that the device 20 has the functions of the base station 10 described above. In addition, terms such as "uplink" and "downlink" can also be rewritten as terms corresponding to communication between terminals (e.g., "side"). For example, uplink channel, downlink channel, etc., can also be rewritten as side channel.

[0634] Similarly, the terminal in this disclosure can also be rewritten as a base station. In this case, it can also be configured such that the base station 10 has the functions of the aforementioned device 20.

[0635] Figure 19 An example of the structure of vehicle 2001 is shown. For example... Figure 19 As shown, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a gear shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013. The various methods / implementations described in this disclosure can also be applied to a communication device mounted on the vehicle 2001, for example, to the communication module 2013.

[0636] The drive unit 2002 is configured, for example, as an engine, a motor, or a combination of an engine and a motor. The steering unit 2003 is configured to include at least a steering wheel (also called a handlebar) and to steer at least one of the front and rear wheels based on the operation of the steering wheel by the user.

[0637] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. The electronic control unit 2010 receives signals from various sensors 2021-2029 of the vehicle 2001. The electronic control unit 2010 can also be referred to as an ECU (Electronic Control Unit).

[0638] The signals from various sensors 2021 to 2029 include current signals from current sensor 2021 that senses the current of the motor, speed signals of the front and rear wheels obtained by speed sensor 2022, air pressure signals of the front and rear wheels obtained by air pressure sensor 2023, vehicle speed signals obtained by vehicle speed sensor 2024, acceleration signals obtained by acceleration sensor 2025, accelerator pedal depress amount signals obtained by accelerator pedal sensor 2029, brake pedal depress amount signals obtained by brake pedal sensor 2026, gear shift lever operation signals obtained by gear shift lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0639] The information service unit 2012 consists of various devices such as a car navigation system, audio system, speakers, television, and radio, used to provide (output) various information such as driving information, traffic information, and entertainment information, as well as one or more ECUs that control these devices. The information service unit 2012 uses information obtained from external devices via the communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.

[0640] The information service unit 2012 may include input devices (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) that accept input from the outside, and output devices (e.g., display, speaker, LED light, touch panel, etc.) that implement output to the outside.

[0641] The driver assistance system unit 2030 comprises various devices used to provide functions such as preventing accidents or reducing the driver's workload, including millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyroscope systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. Furthermore, the driver assistance system unit 2030 sends and receives various information via a communication module 2013 and implements driver assistance or autonomous driving functions.

[0642] The communication module 2013 can communicate with the microprocessor 2031 and the constituent elements of the vehicle 2001 via the communication port. For example, the communication module 2013 sends and receives data with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, front wheel 2007, rear wheel 2008, axle 2009, microprocessor 2031 in the electronic control unit 2010, and memory (ROM, RAM) 2032 and sensors 2021-29 in the vehicle 2001 via the communication port 2033.

[0643] The communication module 2013 can be controlled by the microprocessor 2031 of the electronic control unit 2010 and is a communication device capable of communicating with external devices. For example, it can send and receive various types of information wirelessly with external devices. The communication module 2013 can be located either inside or outside the electronic control unit 2010. External devices can be, for example, base stations, mobile stations, etc.

[0644] The communication module 2013 can also wirelessly transmit to an external device at least one of the signals input to the electronic control unit 2010 from the various sensors 2021-2029 described above, information obtained based on these signals, and information based on input from an external source (user) obtained via the information service unit 2012. The electronic control unit 2010, the various sensors 2021-2029, and the information service unit 2012 can also be referred to as input units that receive input. For example, the PUSCH transmitted via the communication module 2013 can also include information based on the aforementioned input.

[0645] The communication module 2013 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) sent from external devices and displays it on the information service unit 2012 of the vehicle 2001. The information service unit 2012 can also be referred to as an output unit that outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH received through the communication module 2013 (or data / information decoded from the PDSCH).

[0646] Furthermore, the communication module 2013 stores various information received from external devices in a memory 2032 that can be utilized by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc., provided by the vehicle 2001.

[0647] <Meaning and Explanation of Terms>

[0648] The terms "determining" and "determining" as used in this disclosure encompass a wide variety of actions. For example, "determining" and "determining" can include actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), and ascertaining. Furthermore, "determining" and "determining" can include actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, and accessing (e.g., accessing data in memory). Additionally, "determining" and "determining" can include actions such as resolving, selecting, choosing, establishing, and comparing. That is, "judgment" and "decision" can include situations where certain actions are regarded as having been "judged" or "decided". In addition, "judgment (decision)" can also be rewritten as "assuming", "expecting", "considering", etc.

[0649] The terms “connected,” “coupled,” or any variations thereof, refer to all direct or indirect connections or combinations between two or more elements, and can include cases where there is one or more intermediate elements between two mutually “connected” or “coupled” elements. The connection or combination between elements can be physical, logical, or a combination thereof. For example, “connected” can also be rewritten as “access.” In the context of this disclosure, it is possible to consider two elements being mutually “connected” or “coupled” using at least one or more wires, cables, or printed electrical connections, and, as several non-limiting and non-exclusive examples, being mutually “connected” or “coupled” using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, and light (both visible and invisible) region.

[0650] <Reference Signal>

[0651] The reference signal can also be simply referred to as RS (Reference Signal), or it can be called a pilot depending on the standard applied.

[0652] <The meaning of "based on">

[0653] As used in this disclosure, the term "based on" does not mean "based on only" unless otherwise specified. In other words, the term "based on" means both "based on only" and "based on at least".

[0654] <"First", "Second">

[0655] Any reference to elements using the designations "first," "second," etc., as used in this disclosure does not comprehensively limit the quantity or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, references to the first and second elements do not imply that only two elements may be used, or that the first element must precede the second element in some form.

[0656] <Unit>

[0657] Alternatively, the "unit" in the structure of the above devices can be replaced with "section", "circuit", "equipment", etc.

[0658] <Open format>

[0659] In this disclosure, the terms "include," "including," and variations thereof, as well as the term "comprising," refer to inclusion. Furthermore, the term "or" as used in this disclosure does not mean XOR.

[0660] <Time units such as TTI, frequency units such as RB, and radio frame structure>

[0661] A wireless frame can also consist of one or more frames in the time domain. These frames can also be referred to as subframes in the time domain. Furthermore, a subframe can also consist of one or more time slots in the time domain. A subframe can also be a fixed time length (e.g., 1 ms) independent of the parameter set (numerology).

[0662] A parameter set can also be a set of communication parameters applied in at least one of the transmission and reception of a signal or channel. For example, a parameter set can also represent at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, and specific windowing processing performed by the transmitter and receiver in the time domain.

[0663] In the time domain, a time slot can also be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.). A time slot can also be a time unit based on a set of parameters.

[0664] A time slot can also comprise multiple mini-time slots. Each mini-time slot can also consist of one or more symbols in the time domain. Furthermore, a mini-time slot can also be called a sub-time slot. A mini-time slot can also consist of fewer symbols than a time slot. PDSCH (or PUSCH) transmitted in a time unit larger than a mini-time slot can also be called PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using mini-time slots can also be called PDSCH (or PUSCH) mapping type B.

[0665] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols can also be referred to by their respective other names.

[0666] For example, a subframe can also be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and a time slot or a mini-time slot can also be called a TTI. That is, at least one of a subframe and a TTI can be a subframe in existing LTE (1ms), a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. In addition, the unit representing TTI may not be called a subframe, but a time slot, mini-time slot, etc.

[0667] Here, TTI refers, for example, to the smallest unit of time for scheduling in wireless communication. For instance, in an LTE system, the base station schedules radio resources (frequency bandwidth, transmit power, etc., available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0668] TTI can also be a unit of time for transmitting channel-coded data packets (transmission blocks), code blocks, codewords, etc., and can also be a unit of processing such as scheduling and link adaptation. In addition, when a TTI is given, the actual time interval (e.g., the number of symbols) mapped to transmission blocks, code blocks, codewords, etc. can be shorter than the TTI.

[0669] Additionally, where a time slot or a mini-time slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini-time slot) can also serve as the minimum time unit for scheduling. Furthermore, the number of time slots (mini-time slots) constituting the minimum time unit of the schedule can also be controlled.

[0670] A TTI with a duration of 1ms can also be referred to as a normal TTI (TTI in LTE Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI can also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub-time slot, a time slot, etc.

[0671] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be rewritten as a TTI with a duration of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be rewritten as a TTI with a duration of less than a long TTI but more than 1 ms.

[0672] A resource block (RB) is a unit of resource allocation in both the time and frequency domains. In the frequency domain, it can also include one or more consecutive subcarriers. The number of subcarriers included in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers included in an RB can also be determined based on the parameter set.

[0673] Furthermore, the time domain of an RB can also include one or more symbols, or it can be the length of a time slot, a mini-time slot, a subframe, or a TTI. A TTI, a subframe, etc., can also be composed of one or more resource blocks.

[0674] In addition, one or more RBs can also be referred to as Physical Resource Blocks (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0675] Furthermore, a resource block can also consist of one or more resource elements (REs). For example, an RE can also be a radio resource area consisting of a subcarrier and a symbol.

[0676] The Bandwidth Part (BWP) (also known as partial bandwidth, etc.) can also represent a subset of consecutive common resource blocks (RBs) used for a certain parameter set in a certain carrier. Here, common RBs can also be determined by the index of RBs based on the common reference point of that carrier. PRBs can also be defined in a BWP and appended with numbers within that BWP.

[0677] A BWP can also include a UL BWP and a DL BWP. For a UE, one or more BWPs can also be set within a single carrier.

[0678] At least one of the configured BWPs can be active, and the UE may not intend to transmit or receive specific signals / channels outside of the active BWPs. Furthermore, the terms "cell," "carrier," etc., used in this disclosure may be replaced with "BWP."

[0679] The structures described above, such as radio frames, subframes, time slots, mini-time slots, and symbols, are merely illustrative. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, and the number of symbols in a TTI, symbol length, and cyclic prefix (CP) length can be varied in many ways.

[0680] <Maximum Transmit Power>

[0681] The term "maximum transmit power" as used in this disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0682] <Article>

[0683] In this disclosure, for example, in cases where articles are added through translation, such as in English (a, an, and the), this disclosure may also include cases where the noun following these articles is in a plural form.

[0684] <"Differences">

[0685] In this disclosure, the term "A is different from B" can also mean "A and B are different from each other." Additionally, the term can also mean "A and B are each different from C." Terms such as "separate" and "combined" can also be interpreted in the same way as "different."

[0686] Industrial availability

[0687] One aspect of this disclosure is useful for wireless communication systems.

[0688] Explanation of reference numerals in the attached figures

[0689] 10 base stations

[0690] 20 devices

[0691] Transmitting Units 101 and 202

[0692] Receiver units 102 and 201

[0693] 103, 203 Control Units.

Claims

1. A device comprising: The communication unit receives a first signal or transmits a second signal on a first frequency resource; and The control unit determines a second frequency resource for transmitting the third signal based on the first frequency resource.

2. The device according to claim 1, wherein, The control unit determines whether the location of the second frequency resource is the same as the location of the first frequency resource, or a location determined based on the location of the first frequency resource.

3. The device according to claim 1, wherein, The control unit determines that the bandwidth of the second frequency resource is the same as the bandwidth of the first frequency resource, or a bandwidth determined based on the bandwidth of the first frequency resource.

4. The device according to claim 1, wherein, When the communication unit receives the first signal on the first frequency resource, the control unit determines the location of the frequency band including the second frequency resource based on the location of the first frequency resource.

5. A wireless communication device, comprising: The communication unit transmits a first signal or receives a second signal on a first frequency resource; and The control unit determines a second frequency resource for receiving the third signal based on the first frequency resource.

6. A wireless communication method, wherein, The device receives a first signal or transmits a second signal on a first frequency resource; and Based on the first frequency resource, the device determines the second frequency resource for transmitting the third signal.

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