base station

Abstract

The base station includes a control section that performs allocation of downlink or uplink per each time unit divided by time division duplex for both of a downlink band and an uplink band arranged across a guard band in a frequency direction, and a transceiver that transmits and receives data based on the allocation.

Description

Technical Field

[0001] This disclosure relates to base stations that support Frequency Division Duplex (FDD). Background Technology

[0002] The 3rd Generation Partnership Project (3GPP, a registered trademark) standardized the 5th generation mobile communication system (also known as 5G, New Radio (NR), or Next Generation (NG)) and also standardized the next-generation mobile communication system known as Beyond 5G, 5G Evolution, or 6G.

[0003] In 3GPP, techniques such as subband non-overlapping full duplex (SBFD) are known. SBFD is a technique that enables the simultaneous use of downlink (DL) and uplink (UL) by utilizing subbands defined within the band domain of Time Division Duplex (TDD) (Non-Patent Document 1). For example, by applying SBFD to a conventional TDD mode, a UL subband is defined within the band domain of the DL time slot.

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent literature 1: "New WID: Evolution of NR duplex operation: Sub-band fullduplex (SBFD)", RP-234035, 3GPP TSG RAN Meeting #102, 3GPP, December 11-15, 2023 Summary of the Invention

[0007] As mentioned above, TDD, by incorporating SBFD, allows for flexible changes to the DL / UL resource allocation ratio. On the other hand, Frequency Division Duplex (FDD) sometimes sets a guard band between the DL and UL bands, restricting bandwidth changes. That is, the difficulty lies in changing the DL / UL bandwidth and the DL / UL resource allocation ratio by crossing the guard band. Furthermore, in lower frequency bands (e.g., below 2.6 GHz), FDD is sometimes suitable due to the smaller data transmission and reception volumes, and there may be a desire not to simply replace FDD with TDD.

[0008] Therefore, the purpose of this disclosure is to provide a base station that can change the resource allocation ratio of DL / UL even in FDD.

[0009] One disclosed embodiment is a base station comprising: a control unit (control unit 170) that allocates downlink or uplink bandwidth to both downlink and uplink bandwidths separated by guard bands in the frequency direction, according to each time unit divided by time division duplex; and a transceiver unit (wireless signal transceiver unit 110) that transmits and receives data based on the allocation.

[0010] One disclosed embodiment is a base station comprising: a control unit (control unit 170) that allocates a downlink or uplink for one of a downlink band and an uplink band separated by a guard band in the frequency direction, in each time unit divided by time division duplex; and a transceiver unit (wireless signal transceiver unit 110) that transmits and receives data based on the allocation, wherein the control unit allocates the downlink or uplink for the other of the downlink band and the uplink band. Attached Figure Description

[0011] Figure 1 It is a general structural diagram of the wireless communication system.

[0012] Figure 2 This is a diagram showing the frequency ranges used in wireless communication systems.

[0013] Figure 3 This is a diagram illustrating an example of the structure of wireless frames, subframes, time slots, and symbols used in a wireless communication system.

[0014] Figure 4 This is a functional block diagram of a base station.

[0015] Figure 5 This is a functional block diagram of the terminal.

[0016] Figure 6 This is a diagram showing an example of SBFD slots / symbols.

[0017] Figure 7 This is a diagram showing an example of FDD.

[0018] Figure 8 This is a diagram illustrating an example of duplexing based on FDD.

[0019] Figure 9 This is a diagram illustrating an example of duplexing based on FDD.

[0020] Figure 10This is a diagram illustrating an example of duplexing based on FDD.

[0021] Figure 11 This is a diagram illustrating an application example of SBFD in duplex based on FDD.

[0022] Figure 12 This is a diagram illustrating an application example of SBFD in duplex based on FDD.

[0023] Figure 13 This is a diagram illustrating an application example of SBFD in duplex based on FDD.

[0024] Figure 14 This is a diagram illustrating an example of changing the bandwidth in an FDD.

[0025] Figure 15 This is a diagram illustrating an example of changing the bandwidth in an FDD.

[0026] Figure 16 This is a diagram illustrating an example of changing the bandwidth in an FDD.

[0027] Figure 17 This is a diagram illustrating an example of changing the bandwidth in an FDD.

[0028] Figure 18 This is a diagram illustrating an example of the hardware structure of a base station and a terminal.

[0029] Figure 19 This is a diagram showing an example of the structure of a vehicle. Detailed Implementation

[0030] The embodiments are described below based on the accompanying drawings. Furthermore, the same or similar reference numerals are used to denote the same function or structure, and their descriptions are omitted where appropriate.

[0031] (1) Structure of wireless communication system

[0032] Figure 1 The wireless communication system 10 shown is a wireless communication system that follows a method known as 5G. On the other hand, the wireless communication system 10 can also be a wireless communication system that follows a method known as Beyond 5G, 5G Evolution, or 6G.

[0033] The wireless communication system 10 can support massive multiple-input multiple-output (MIMO) systems that generate more directional beams by controlling wireless signals transmitted from multiple antenna elements, carrier aggregation (CA) systems that use multiple component carriers (CC), and dual connectivity (DC) systems that can communicate simultaneously with two base stations.

[0034] like Figure 1 As shown, the wireless communication system 10 includes a base station 100 (hereinafter also referred to as gNodeB (gNB) 100) constituting a Next Generation-Radio Access Network (NG-RAN) 20, and a terminal 200 (hereinafter also referred to as User Equipment (UE) 200) that communicates wirelessly with the gNB 100. The NG-RAN 20 is connected to a core network (CN) not shown. The CN consists of multiple network functions (NFs). NFs include, for example, Access and Mobility Management Function (AMF) and Network Data Analytics Function (NWDAF). The AMF, for example, performs registration for the UE 200. The NWDAF, for example, performs optimization for the CN. Furthermore, the specific structure of the wireless communication system 10, such as the number of gNBs 100 and UEs 200, is not limited to... Figure 1 The example shown. Additionally, NG-RAN 20 and CN can also be simply referred to as "network".

[0035] The gNB 100 can also be a base station with a centralized-radio access network (C-RAN) structure, consisting of a distributed unit (DU) for connecting to the UE 200 and a central unit (CU) for connecting to the network. In this case, the gNB 100 can be replaced by a DU, a CU, or both. When the gNB 100 is replaced by a DU, it can also be called gNB-DU. When the gNB 100 is replaced by a CU, it can also be called gNB-CU. When the gNB 100 is replaced by both a DU and a CU, the DU portion can be called gNB-DU, and the CU portion can be called gNB-CU.

[0036] In addition, the wireless communication system 10 can support multiple frequency ranges (FRs). That is, such as Figure 2 As shown, the following FRs can be supported.

[0037] FR1: 410MHz~7.125GHz

[0038] FR2-1: 24.25GHz~52.6GHz

[0039] FR2-2: Over 52.6GHz to 71GHz

[0040] In FR1, a subcarrier spacing (SCS) of 15, 30, or 60 kHz and a bandwidth (BW) of 5–100 MHz can be used. In FR2-1, an SCS of 60 or 120 kHz (or 240 kHz) and a BW of 50–400 MHz can be used.

[0041] In FR2-2, to avoid increasing phase noise, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) or Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) with a larger SCS can be applied.

[0042] In addition, such as Figure 3 As shown, one time slot in the wireless communication system 10 consists of 14 symbols. While maintaining this structure, a larger (wider) SCS results in a shorter symbol period (and time slot period). Furthermore, the SCS is not limited to... Figure 3 The frequency shown can be, for example, 480kHz, 960kHz, etc.

[0043] Furthermore, the number of symbols constituting one time slot does not necessarily have to be 14 symbols; for example, it could be 28 or 56 symbols. Also, the number of time slots in each subframe can vary depending on the SCS.

[0044] (2) Functional block structure of wireless communication system

[0045] (2.1) Functional block structure of base station

[0046] like Figure 4 As shown, the gNB 100 includes a wireless signal transceiver unit 110, an amplifier unit 120, a modem unit 130, and a control signal transceiver unit 140. The reference signal processing unit 140, the encoding / decoding unit 150, the data transceiver unit 160, and the control unit 170 are included.

[0047] The wireless transceiver unit 110 transmits and receives wireless signals with the UE 200. The wireless transceiver unit 110 may also be configured as a transmitting unit that sends wireless signals to the UE 200 and a receiving unit that receives wireless signals from the UE 200. The wireless signals may contain data or may be replaced by data. Transmission may also be replaced by settings, indications, notifications, etc. Reception may also be replaced by reports, notifications, etc. Furthermore, settings may be implemented through setting information (information elements (IE)) at the Radio Resource Control (RRC) layer, and indications may be implemented through control elements (CE) and downlink control information (DCI) at the Media Access Control (MAC) layer.

[0048] The wireless transceiver unit 110 of the embodiment can transmit and receive data based on the downlink (DL) or uplink (UL) allocation performed by the control unit 170 described later. This allocation can be understood as an allocation of the frequency division duplex (FDD) band domain, or as an allocation of the band domain according to each time unit divided by time division duplex (TDD).

[0049] Here, the time unit divided by TDD is, for example, a time slot, but it can also be other time units such as a symbol. Furthermore, within the band of a time unit divided by TDD, a subband with a transmission / reception direction different from that band can be set. That is, SBFD (Simplified Subband Divided by TDD) can also be applied to the time unit divided by TDD. When applying SBFD, for example, a UL subband can be set within the time unit for allocating DL. Therefore, when applying SBFD, the allocation performed by the control unit 170 described above can also be understood as including the allocation of DL and UL within the time unit divided by TDD.

[0050] On the other hand, in addition to using the DL band and UL band of FDD to transmit and receive data, the wireless signal transceiver unit 110 of the embodiment can also use the DL band allocated by the control unit 170 in a portion of the frequency band within the UL band to transmit and receive data.

[0051] In addition, the wireless signal transceiver unit 110 of the embodiment can transmit and receive data using the DL band and UL band of the FDD, in addition to using the UL band allocated by the control unit 170 in a portion of the frequency band within the DL band.

[0052] Furthermore, after receiving data using the UL band domain, the wireless signal transceiver unit 110 of the embodiment can transmit data using the DL band domain, which is allocated to a portion of the frequency band within the UL band domain as described above.

[0053] In addition, when the wireless signal transceiver unit 110 of the embodiment competes with data reception using the UL band domain and data reception using the DL band domain, which allocates a portion of the frequency band within the UL band domain (for example, when scheduling is performed on both the UL band domain and the DL band domain, which allocates a portion of the frequency band within the UL band domain), it can notify the UE 200 to prioritize the use of the UL band domain.

[0054] Furthermore, when the wireless transceiver unit 110 dynamically allocates DL band space for a portion of the frequency band within the UL band space, it can notify the UE 200 of the timing of such allocation. Specifically, the wireless transceiver unit 110 can notify the UE 200 of the timing of such allocation via downlink control information (DCI) or media access control control element (MAC CE).

[0055] The amplification unit 120 includes a power amplifier (PA) and a low-noise amplifier (LNA). The amplification unit 120 amplifies the wireless signal output from the wireless signal transceiver unit 110. Additionally, the amplification unit 120 amplifies the wireless signal output from the modem unit 130.

[0056] The modem 130 performs data modulation / demodulation, transmit power setting, and resource block allocation for each predetermined communication destination (UE 200 or other UE 200). CP-OFDM / DFT-S-OFDM can also be applied in the modem 130. Furthermore, DFT-S-OFDM can be used not only for the uplink (UL) but also for the downlink (DL).

[0057] control signals The reference signal processing unit 140 performs processing of control signals, such as Radio Resource Control (RRC) signaling, that are transmitted and received with the UE 200.

[0058] control signals The reference signal processing unit 140 performs processing on reference signals transmitted and received with the UE 200, such as demodulation reference signal (DMRS), phase tracking reference signal (PTRS), channel state information-reference signal (CSI-RS), sounding reference signal (SRS), and positioning reference signal (PRS).

[0059] In addition, the channels include control channels and data channels. Control channels include the Physical Uplink Control Channel (PUCCH), Physical Downlink Control Channel (PDCCH), Physical Random Access Channel (PRACH), and Physical Broadcast Channel (PBCH). Data channels include the Physical Uplink Shared Channel (PUSCH) and Physical Downlink Shared Channel (PDSCH).

[0060] The encoding / decoding unit 150 performs segmentation / linking and encoding / decoding of the data contained in the wireless signal for each predetermined communication destination (UE 200 or other UE 200).

[0061] Specifically, the encoder / decoder 150 decodes the data output from the modem 130 and concatenates the decoded data. Additionally, the encoder / decoder 150 divides the data output from the data transceiver 160 into predetermined sizes and encodes the divided data.

[0062] The data transceiver unit 160 performs tasks such as assembling and decomposing Protocol Data Units (PDUs) and Service Data Units (SDUs) that constitute data between layers. These layers include the Media Access Control (MAC) layer, the Radio Link Control (RLC) layer, and the Packet Data Convergence Protocol (PDCP) layer. Furthermore, the data transceiver unit 160 performs error correction and retransmission control based on Hybrid Automatic Repeat Request (HARQ).

[0063] The control unit 170 controls the gNB 100. For example, the control unit 170 controls the transmission and reception of wireless signals based on the wireless signal transceiver unit 110, amplification based on the amplification unit 120, data modulation / demodulation based on the modulation / demodulation unit 130, and control signals. The signal processing of the reference signal processing unit 140, the encoding / decoding based on the encoding / decoding unit 150, and the assembly / decomposition of data units based on the data transceiver unit 160.

[0064] The control unit 170 can control the handover (HO) of UE 200. HO can also be understood as, for example, migrating from gNB 100 to which UE 200 is connected to another gNB 100. Furthermore, the gNB 100 to which UE 200 is connected in the HO can be replaced with the cell or beam formed by the gNB 100. Additionally, HO can also be replaced with terms such as cell migration, cell change, or beam change.

[0065] The control unit 170 in this embodiment is capable of allocating either DL or UL bandwidth to both the downlink (DL) and uplink (UL) bands, which are separated by a guard band (GB) in the frequency direction, according to each time unit divided by time division duplex (TDD). In other words, the control unit 170 is capable of allocating either DL or UL bandwidth to both the DL and UL bands of frequency division duplex (FDD) according to each time unit divided by TDD.

[0066] The control unit 170 in this embodiment can allocate DL or UL to one of the downlink (DL) and uplink (UL) bands, which are separated by a guard band (GB) in the frequency direction, on a time unit divided by Time Division Duplex (TDD). In other words, the control unit 170 can allocate DL or UL to one of the DL and UL bands of Frequency Division Duplex (FDD) on a time unit divided by TDD. In this case, the control unit 170 can allocate DL or UL to the other of the DL and UL bands of FDD, similar to conventional FDD, on a band-by-band basis.

[0067] Furthermore, the control unit 170 in the embodiment can also independently perform the above-mentioned allocation, that is, the allocation of DL or UL for each time unit divided by TDD, in the DL band domain and the UL band domain. Therefore, the allocation of DL or UL in the same time unit can be different in the DL band domain and the UL band domain.

[0068] Alternatively, the control unit 170 in the embodiment can also allocate sub-bands of UL within the band domain of allocating DL time units. Conversely, the control unit 170 can also allocate sub-bands of DL within the band domain of allocating UL time units.

[0069] Furthermore, the control unit 170 in the embodiment can also be configured to allow or disallow the allocation of the aforementioned sub-bands. Specifically, the control unit 170 can also independently configure whether or not sub-bands can be allocated in the DL band domain and the UL band domain.

[0070] Furthermore, the allocation performed by the control unit 170 can also be understood as: allocating DL or UL for each time unit of TDD for the FDD band domain units, thereby covering the allocation of band domain units. On the other hand, it can also be understood that the covered DL or UL allocation is one of the predetermined DL or UL allocation modes. That is, the DL or UL allocation setting in the embodiment can be understood as (while maintaining the two band domains of FDD) the allocation setting after covering the allocation setting in FDD by the TDD allocation setting, or it can be understood as one of the predetermined modes (for example, a TDD mode applied to the DL band domain and UL band domain of FDD, or a mode obtained by combining the DL band domain of FDD and the TDD mode applied to the UL band domain).

[0071] On the other hand, the control unit 170 in this embodiment can set downlink (DL) and uplink (UL) bands in the frequency direction, separated by the guard band (GB). Furthermore, the control unit 170 can allocate a portion of the frequency band in the UL band to the DL band. In addition, the control unit 170 can allocate a portion of the frequency band in the DL band to the UL band.

[0072] Furthermore, the control unit 170 in the embodiment is not limited to static or semi-static, and can dynamically perform the above-mentioned allocation, that is, the allocation of the DL band domain for a portion of the UL band domain, or the allocation of the UL band domain for a portion of the DL band domain.

[0073] (2.2) Functional block structure of the terminal

[0074] like Figure 5 As shown, the UE 200 includes a wireless signal transceiver unit 210 and a control unit 220.

[0075] The wireless transceiver unit 210 transmits and receives wireless signals with the gNB 100. The wireless transceiver unit 210 can also be configured as a transmitter sending wireless signals to the gNB 100 and a receiver receiving wireless signals from the gNB 100. The wireless signal can contain data or can be replaced by data. Transmission can also be replaced by reports, notifications, etc. Reception can also be replaced by settings, instructions, notifications, etc. Furthermore, settings can be implemented through setting information (information elements (IE)) at the Radio Resource Control (RRC) layer, and instructions can be implemented through control elements (CE) and downlink control information (DCI) at the Media Access Control (MAC) layer.

[0076] The control unit 220 controls the UE 200. For example, the control unit 220 controls the transmission and reception of wireless signals performed by the wireless signal transceiver unit 210.

[0077] (3) SBFD

[0078] like Figure 6 As shown, SBFD can be applied to each time slot / symbol. In addition, for each time slot / symbol, besides DL and UL, SBFD can also be applied after being set to Flexible (FL) for use as DL or UL.

[0079] SBFD is a type of full-duplex duplexing based on Time Division Duplex (TDD), which can simultaneously utilize multiple subbands constituting the TDD band domain. In addition, SBFD can also be described as a duplexing method that defines multiple subbands within the TDD band domain, or as a duplexing method that allocates UL and DL non-overlapping in the frequency direction within the TDD time unit, or as full-duplexing of subbands.

[0080] The time slots / symbols for which SBFD is applied are also referred to as SBFD time slots / symbols. "Applying SBFD" can also be understood as applying SBFD in at least a portion of the scheduling. That is, "time slots / symbols for which SBFD is applied" can also be understood as time slots / symbols for which SBFD is applied within a scheduling that applies SBFD (SBFD time slots / symbols). Additionally, "time units for which non-SBFD is applied" can also be understood as time slots / symbols for which SBFD is not applied within a scheduling that applies SBFD (non-SBFD time slots / symbols).

[0081] like Figure 6 As shown, each sub-band (SBFD sub-band) constituting the SBFD time slot / symbol is assigned either DL or UL. Hereinafter, sub-bands assigned DL will be referred to as DL sub-bands, and sub-bands assigned UL will be referred to as UL sub-bands. Figure 6 In the diagram, time slots / symbols or subbands marked with "D" are DL time slots / symbols or DL ​​subbands, and time slots / symbols or subbands marked with "U" are UL time slots / symbols or UL subbands. Additionally, time slots / symbols marked with "F" in other diagrams are FL time slots / symbols.

[0082] Non-SBFD time slots / symbols and SBFD time slots / symbols can also be understood as time units. For example, a non-SBFD time slot / symbol can be understood as a time unit for applying TDD, and an SBFD time slot / symbol can be understood as a time unit that can utilize multiple subbands that constitute the TDD band (or, subbands within the TDD band whose transmission and reception directions are different from those of the TDD band).

[0083] Non-SBFD time slots / symbols and SBFD time slots / symbols can also be understood as resources observed from the time direction. For example, non-SBFD time slots / symbols can be understood as resources for applying TDD, and SBFD time slots / symbols can be understood as resources that can utilize multiple subbands that constitute the TDD band (or, subbands within the TDD band whose transmission and reception directions are different from the TDD band).

[0084] (4) Operation of wireless communication system

[0085] (4.1) Topic

[0086] TDD, by incorporating SBFD, allows for flexible changes to the DL / UL resource allocation ratio. On the other hand, Frequency Division Duplex (FDD) sometimes sets a guard band between the DL and UL bands, restricting bandwidth changes. Specifically, the difficulty lies in changing the DL / UL bandwidth and resource allocation ratio by bypassing the guard band. Furthermore, in lower frequency bands (e.g., below 2.6 GHz), FDD is sometimes suitable due to the smaller data transmission and reception volumes, and there may be a desire not to simply replace FDD with TDD.

[0087] (4.2) Example of an action

[0088] The following describes an example of the implementation method. Furthermore, as a prerequisite for this implementation method, both gNB 100 and UE200 support FDD and TDD.

[0089] (4.2.1) Action Example 1

[0090] Reference Figures 7 to 10 Example 1 will be explained. Example 1 extends the resource allocation in the conventional FDD band domains (DL band domain and UL band domain). Furthermore, as... Figure 7 As shown, a guard band (GB) is provided between the DL band and UL band of the FDD to prevent interference between the transceiver and receiver.

[0091] (4.2.1.1) Option 1

[0092] like Figure 8 As shown, the gNB 100 can use FDD bands (DL bands and UL bands) separately for TDD. Specifically, it can allocate DL or UL to the DL and UL bands according to each time unit divided by TDD, ignoring the DL and UL allocated on a band-by-band-specific basis. The allocation of each time unit can be the same as the previous TDD mode, or it can be a newly defined mode.

[0093] The TDD mode in the DL band and the TDD mode in the UL band can be like... Figure 8It can be the same as shown, or as... Figure 9 As shown, it is different. Furthermore, "same" can be understood as the same DL or UL within the same time unit, and "different" can be understood as different DL or UL within the same time unit.

[0094] The TDD mode setting can be set statically / semi-statically / dynamically in both the DL and UL band domains, or it can be set statically / semi-statically / dynamically independently in both the DL and UL band domains.

[0095] Transmission and reception in the DL band domain and in the UL band domain are prevented from interfering with each other by guarding the band domain, so they can be performed simultaneously regardless of changes in the DL or UL in the same time unit.

[0096] (4.2.1.2) Option 2

[0097] like Figure 10 As shown, the gNB 100 can use either the DL or UL band domains of the FDD as TDD. Specifically, it can allocate DL or UL to either the DL or UL band domain for each time unit divided by TDD, ignoring the DL or UL allocated on a band domain basis. The allocation of each time unit can be the same as the conventional TDD mode, or it can be a newly defined mode. Furthermore, the TDD mode can be set statically, semi-statically, or dynamically.

[0098] Additionally, the other party in a DL or UL band domain can be used as a resource allocated on a band domain basis. Furthermore, similar to option 1, transmission and reception in the DL band domain and in the UL band domain can also be performed simultaneously.

[0099] Furthermore, the two band fields (DL band field and UL band field) in Action Example 1 can be defined as one band field or redefined as two band fields. For example, if the two band fields are defined as band field X as band field X in FDD, they can also be defined as band field X even when used as TDD, or they can be redefined as band field X-1 and band field X-2.

[0100] (4.2.2) Action Example 2

[0101] Reference Figures 11 to 13 Example 2 will be explained. Example 2 applies SBFD to the band field that was used as TDD in Example 1.

[0102] like Figure 11 as well as Figure 12As shown, gNB 100 can further apply SBFD in option 1 of action example 1. Specifically, it can allocate UL sub-bands within the time unit where DL is assigned. Furthermore, although not shown, it can also allocate DL sub-bands within the time unit where UL is assigned. Additionally, whether SBFD can be applied and whether there are sub-bands can be set independently for each band domain, just like the allocation of DL or UL for each time unit. Similarly, as... Figure 13 As shown, gNB 100 can further apply SBFD in option 2 of action example 1.

[0103] Furthermore, the presence or absence of sub-bands can be dynamically changed. This allows the ratio of DL / UL resources to change dynamically.

[0104] (4.2.3) Action Example 3

[0105] Reference Figure 14 as well as Figure 15 Example 3 will now be explained. Example 3 modifies the bandwidth of the existing FDD bands (DL band and UL band) (setting them to be unbalanced). Alternatively, the DL band in Example 3 can be replaced with the UL band, and vice versa.

[0106] (4.2.3.1) Option 1

[0107] like Figure 14 As shown, the gNB 100 can change the bandwidth of the FDD bands (DL bands and UL bands). Furthermore, in this case, the location of the guard band is also changed.

[0108] The changed center frequency and bandwidth of each band can be defined in the specification, or preset (e.g., as an assigned band), or notified via signaling. When using signaling, the center frequency (or band) of the DL and UL bands can be dynamically notified. Additionally, when using signaling, the bandwidth of the protection band remains constant, and the center frequency of the protection band can also be notified.

[0109] (4.2.3.2) Option 2

[0110] like Figure 15 As shown, gNB 100 can, for the FDD band field (DL band field (corresponding to DL band field A in the figure) and UL band field), without changing the position of the protection band field, for example, for the UL band field, allow the DL band field (corresponding to DL band field B in the figure) to coexist.

[0111] The following constraints can be set for the DL band field B.

[0112] • Cannot be transmitted and received simultaneously with UL band domain

[0113] (For example, when scheduling exists in both the DL and UL band domains, priorities can also be set. Priority can be set to prioritize UL, or a priority flag can be used to indicate this.)

[0114] • It may also be possible to map only specific channels (e.g., data channels).

[0115] • You can also further configure GB between DL band B and UL band, or notify others of this information.

[0116] (4.2.4) Action Example 4

[0117] Reference Figure 16 as well as Figure 17 Example 4 will be explained below. Example 4 dynamically changes the bandwidth as in Example 3. Alternatively, the DL band field in Example 4 can be replaced with the UL band field, and vice versa.

[0118] (4.2.4.1) Option 1

[0119] like Figure 16 As shown, the gNB 100 can dynamically change the bandwidth of the FDD bands (DL bands and UL bands). Furthermore, in this case, the position of the guard band is also changed.

[0120] Changes in the center frequency and bandwidth of each band can also be notified via signaling. When using signaling, the center frequency (or frequency band) of the DL and UL bands can be dynamically notified. Additionally, when using signaling, the bandwidth of the guard band remains constant, and the center frequency of the guard band can also be notified. Furthermore, the signaling can be, for example, DCI or MAC CE, in which case the notification can be understood as an activation / deactivation.

[0121] Furthermore, depending on time resources, both the DL and UL band domains can be set to DL or UL. Alternatively, in this case, a guard band domain can be omitted.

[0122] (4.2.4.2) Option 2

[0123] like Figure 17 As shown, gNB 100 can dynamically mix and exist the DL bands without changing the position of the protection bands for the FDD bands (DL bands and UL bands).

[0124] Furthermore, depending on time resources, both the DL and UL band domains can be set to DL or UL. Alternatively, in this case, a guard band domain can be omitted.

[0125] In addition, similar to Action Example 3, the following constraints can be set for DL ​​band domains that coexist in the UL band domain.

[0126] • Cannot be transmitted and received simultaneously with UL band domain

[0127] (For example, when scheduling exists in both the DL and UL band domains, priorities can also be set. Priority can be set to prioritize UL, or a priority flag can be used to indicate this.)

[0128] • It may also be possible to map only specific channels (e.g., data channels).

[0129] • GB can also be further set between the DL domain and the UL domain that exist in the UL domain, and this information can also be notified.

[0130] (5) Other implementation methods

[0131] The present invention has been described above according to the embodiments, but the present invention is not limited to these descriptions and various modifications and improvements can be made, which will be obvious to those skilled in the art.

[0132] In the above action example, UE 200 can also perform actions using the conventional TDD. For example, the multiple band domains supported by the gNB 100 can be scheduled for different UE 200s.

[0133] The above examples of actions can be combined and used in combination as long as they do not contradict each other.

[0134] Furthermore, the block diagrams used in the description of the above embodiments illustrate blocks based on function. These functional blocks (structural units) are implemented through any combination of at least one of hardware and software. Additionally, there are no particular limitations on the implementation method of each functional block. 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., using wired, wireless, etc.) connecting two or more physically or logically separate devices. Functional blocks can also be implemented by combining software within one or more of the aforementioned devices.

[0135] 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 part) that performs the sending function is called the transmitting unit or transmitter. In short, as mentioned above, there are no particular limitations on the implementation method.

[0136] For example, in one embodiment of this disclosure, the base station 100, terminal 200, etc., 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 a base station 100 and a terminal 200 according to one embodiment of this disclosure. The base station 100 and the terminal 200 described above may also be configured as a computer device that physically includes 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.

[0137] Furthermore, in the following description, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware structure of base station 100 and terminal 200 can be configured to include one or more of the devices shown in the figures, or it can be configured to not include any of them.

[0138] The functions of the base station 100 and the terminal 200 are implemented by reading predetermined software (programs) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls the communication of the communication device 1004 or controls at least one of reading out and writing data in the memory 1002 and the storage device 1003.

[0139] The processor 1001 controls the computer as a whole, for example, by instructing the operating system to operate. The processor 1001 may also be a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic devices, registers, etc.

[0140] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one direction of memory 1002 in the storage device 1003 and the communication device 1004, and performs various processes accordingly. The program is used to cause the computer to perform at least a portion of the actions described in the above embodiments. Although it has been described that the various processes described above are performed by one processor 1001, the various processes described above can also be performed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be implemented using one or more chips. In addition, the program can also be transmitted from a network via a telecommunications line.

[0141] The memory 1002 is a computer-readable recording medium, and may be composed of at least one of the following: read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), and random access memory (RAM). The memory 1002 may be referred to as a register, cache, main memory (main storage device), etc. The memory 1002 can store programs (program code), software modules, etc., that are executable for implementing the wireless communication method according to one embodiment of this disclosure.

[0142] Storage device 1003 is a computer-readable recording medium, and may be composed of at least one of the following: optical discs such as CD-ROM (Compact Disc ROM), hard disks, floppy disks, magneto-optical discs (e.g., compact discs, digital multipurpose discs, Blu-ray discs), smart cards, flash memory (e.g., cards, sticks, key drives), floppy disks, magnetic stripes, etc. Storage device 1003 may also be referred to as an auxiliary storage device. The aforementioned storage medium may be, for example, a database, server, or other suitable media that includes at least one of memory 1002 and storage device 1003.

[0143] The communication device 1004 is hardware (transceiver) 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. The communication device 1004 may, for example, be configured to include a high-frequency switch, duplexer, filter, frequency synthesizer, etc., to implement at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

[0144] 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, etc.). Furthermore, input device 1005 and output device 1006 can also be integrated (e.g., a touch panel).

[0145] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communication of information. The bus 1007 can be configured as a single bus or as different buses between devices.

[0146] Furthermore, the base station 100 and the terminal 200 can be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field-programmable gate array (FPGA), which can be used to implement some or all of the functional blocks. For example, the processor 1001 can also be implemented using at least one of these hardware components.

[0147] The notification of information is not limited to the forms / implementations described in this disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or combinations thereof. Additionally, RRC signaling may also be referred to as RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0148] The various forms / implementations described in this disclosure can also be applied to systems utilizing LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is, for example, an integer or a decimal), Future Radio Access (FRA), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE At least one of 802.20, Ultra-Wideband (UWB), Bluetooth (registered trademark), other suitable systems, and next-generation systems based on, modified, generated, or specified from these systems. Additionally, multiple systems may be combined (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.) for application.

[0149] The processing procedures, timing, and flow of the various forms / implementations described in this disclosure may be changed in order, provided there is no contradiction. For example, the elements of various steps are indicated using an illustrative order in the methods described in this disclosure, but are not limited to the specific order indicated.

[0150] In this disclosure, certain actions performed by the base station are sometimes also performed by its upper node, depending on the circumstances. In a network consisting of one or more network nodes having a base station, it is obvious that various actions performed to communicate with a terminal can be performed by at least one of the base station and other network nodes besides the base station (e.g., considering an MME or S-GW, but not limited to these). The above illustration depicts a case where there is only one other network node besides the base station, but it can also be a combination of multiple other network nodes (e.g., an MME and an S-GW).

[0151] It can output information and signals (information, etc.) from a higher (or lower) level to a lower (or higher) level. It can also be input or output through multiple network nodes.

[0152] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0153] The determination can be made by the value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by comparing numerical values ​​(e.g., comparing with a predetermined value).

[0154] The various forms / implementations described in this disclosure can be used individually or in combination, and can be switched depending on the execution. Furthermore, the notification of predetermined information (e.g., a "It is X" notification) is not limited to being explicit, but can also be implicit (e.g., not notifying the predetermined information).

[0155] Software, whether called software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted as referring to commands, command sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0156] In addition, software, commands, information, etc., can be sent and received via a transmission medium. For example, when software is sent from a webpage, 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 a transmission medium.

[0157] The information, signals, etc., described in this disclosure can also be represented using any of a variety of different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc., that may be involved in the above description as a whole can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0158] Furthermore, the terms used in this disclosure and 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 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 carrier frequency, cell, frequency carrier, etc.

[0159] The terms “system” and “network” as used in this disclosure are used interchangeably.

[0160] Furthermore, the information, parameters, etc., described in this disclosure can be represented using absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources can be indicated using indexes.

[0161] The names used for the above parameters are non-limiting in any respect. Furthermore, the formulas, etc., 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 all appropriate names, therefore the various names assigned to these channels and information elements are non-limiting in any respect.

[0162] 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. Sometimes, terms such as macro cell, small cell, femtocell, and picocell are also used to refer to base stations.

[0163] A base station can accommodate one or more (e.g., three) cells (also called sectors). 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)). The terms "cell" or "sector" refer to a portion or the entire coverage area of ​​at least one of the base station and base station subsystem providing communication services within that coverage area.

[0164] In this disclosure, the base station sending information to the terminal can also be replaced by the base station instructing the terminal on information-based control / actions.

[0165] In this disclosure, the terms "terminal", "user terminal", "mobile station (MS)" and "user equipment (UE)" are used interchangeably.

[0166] For mobile stations, those skilled in the art sometimes also use the following terms: 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, handheld device, user agent, mobile client, client, or some other appropriate terms.

[0167] At least one of the base station and mobile station can also be referred to as a transmitting device, receiving device, communication device, etc. Furthermore, at least one of the base station and 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 with an arbitrary speed of movement. It also includes situations where the mobile body is stationary. Examples of mobile bodies include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, rear cars, rickshaws, ships (ships and other watercraft), airplanes, rockets, artificial satellites, Drone (registered trademark), multi-rotor helicopters, quadcopter helicopters, balloons, and objects mounted on them. Additionally, 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., car, airplane), a mobile body that moves unmanned (e.g., drone, autonomous vehicle), or a robot (humanized or unmanned). Furthermore, at least one of the base station and mobile station also includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station can be an IoT (Internet of Things) device such as a sensor.

[0168] Furthermore, the base station in this disclosure can also be replaced by a terminal. For example, various forms / implementations of this disclosure can be applied to a structure that replaces the communication between the base station and the terminal with communication between multiple terminals (e.g., also referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminal 200 can also be configured to have the functions of the base station 100 described above. In addition, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "side"). For example, uplink channel, downlink channel, etc., can also be replaced with side channel.

[0169] Similarly, the terminal in this disclosure can also be replaced by a base station. In this case, the base station 100 can also be configured to have the functions of the terminal 200 described above.

[0170] Figure 19 An example of the structure of vehicle 2001 is shown. For example... Figure 19As 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, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013.

[0171] The drive unit 2002 may consist of, for example, an engine, a motor, or a hybrid power system of an engine and a motor.

[0172] The steering unit 2003 includes at least a steering wheel (also called a steering wheel) configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0173] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (I / O port) 2033. Signals from various sensors 2021 to 2027 of the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 can also be referred to as an Electronic Control Unit (ECU).

[0174] 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 input signals obtained by accelerator pedal sensor 2029, brake pedal input signals obtained by brake pedal sensor 2026, gear lever operation signals obtained by gear lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0175] The Information Service Unit 2012 consists of various devices such as a car navigation system, audio system, speakers, television, and radio, which provide (output) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information obtained from external devices via communication modules 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.

[0176] The Information Services Department 2012 may include input devices that accept input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that implement output to external sources (e.g., monitor, speaker, LED light, touch panel, etc.).

[0177] The Driver Assistance System 2030 comprises various devices used to prevent accidents or reduce driver workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning devices (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 2030 transmits and receives various information via the communication module 2013 to achieve driver assistance or autonomous driving functions.

[0178] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 2001 via the communication port. For example, the communication module 2013 can send and receive data with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axle 2009, microprocessor 2031 in the electronic control unit 2010, memory (ROM, RAM) 2032, and sensors 2021 to 2029 in the vehicle 2001 via the communication port 2033.

[0179] The communication module 2013, controlled by the microprocessor 2031 of the electronic control unit 2010, is a communication device capable of communicating with external devices. For example, it can transmit and receive various types of information with external devices via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. External devices can be, for example, base stations, mobile stations, etc.

[0180] The communication module 2013 can 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, information obtained based on those signals, and information obtained via the information service unit 2012 based on input from an external source (user). 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 by the communication module 2013 can contain information based on the aforementioned input.

[0181] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) sent from external devices and displays it on the information service unit 2012 provided by the vehicle. 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 by the communication module 2013 (or the data / information decoded from the PDSCH).

[0182] In addition, the communication module 2013 stores various information received from external devices in a memory 2032 available to the microprocessor 2031. The microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axles 2009, sensors 2021 to 2029, etc., of the vehicle 2001 based on the information stored in the memory 2032.

[0183] As used in this disclosure, terms such as "determining" and "determining" sometimes encompass a variety of actions. For example, "determining" or "determining" may include actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), and ascertaining, which are considered as actions of "determining" or "determining." Furthermore, "determining" or "determining" may include actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, and accessing (e.g., accessing data in memory), which are considered as actions of "determining" or "determining." Additionally, "determining" or "determining" may include actions such as resolving, selecting, choosing, establishing, and comparing, which are considered as actions of "determining" or "determining." That is, "judgment" and "decision" can include matters that are considered as having been "judged" or "decided". In addition, "judgment (decision)" can also be replaced by "assuming", "expecting", "considering", etc.

[0184] The terms “connected,” “coupled,” or any variations thereof are intended to indicate any direct or indirect connection or combination between two or more elements, including cases where there is one or more intermediate elements between the two elements that are “connected” or “coupled.” The combination or connection between elements can be physical, logical, or a combination of these. For example, “access” can be used instead of “connected.” In the context of this disclosure, it can be understood that two elements are “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, and, as some non-limiting and non-inclusive examples, using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible regions) to “connect” or “couple” to each other.

[0185] The reference signal can also be abbreviated as RS, or, depending on the standard applied, as a pilot.

[0186] As used in this disclosure, the word "based on" does not mean "based on only" unless otherwise expressly stated. In other words, the word "based on" means both "based on only" and "based on at least".

[0187] Any reference to elements using the designations "first," "second," etc., as used in this disclosure does not necessarily limit the number 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 can be taken, or that the first element must precede the second element in any form.

[0188] Alternatively, the "unit" in the structure of the above devices can be replaced with "section", "circuit", "equipment", etc.

[0189] When the terms "include," "including," and their variations are used in this disclosure, these terms, like the term "comprising," imply inclusion. Furthermore, the term "or" as used in this disclosure does not refer to XOR.

[0190] A radio frame can consist of one or more frames in the time domain. Each frame in the time domain can be called a subframe. A subframe can also consist of one or more time slots in the time domain. A subframe can be a fixed duration (e.g., 1 ms) independent of the parameter set (numerology).

[0191] A parameter set can be communication parameters applied to at least one of the transmission and reception of a signal or channel. For example, a parameter set can 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 transceiver in the frequency domain, and specific windowing processing performed by the transceiver in the time domain.

[0192] In the time domain, a time slot can 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 be a time unit based on a set of parameters.

[0193] A time slot can contain multiple mini-time slots. Each mini-time slot can consist of one or more symbols in the time domain. Additionally, a mini-time slot can also be called a sub-time slot. A mini-time slot can consist of fewer symbols than a time slot. PDSCH (or PUSCH) transmitted in time units larger than mini-time slots can be called PDSCH (or PUSCH) mapping type (type) A. PDSCH (or PUSCH) transmitted using mini-time slots can be called PDSCH (or PUSCH) mapping type (type) B.

[0194] 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 each be referred to by other corresponding names.

[0195] For example, a single subframe can be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and a single time slot or a single mini-time slot can also be called a TTI. In other words, at least one of a subframe or TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., symbols 1-13), or a period longer than 1ms. Furthermore, the unit representing TTI can also be called a time slot, mini-time slot, etc., instead of a subframe.

[0196] 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 the allocation of radio resources (bandwidth, transmit power, etc., available to each terminal) to each terminal in units of TTI. However, the definition of TTI is not limited to this.

[0197] The Time Interval (TTI) can be a unit of time for transmitting channel-coded data packets (transmission blocks), code blocks, codewords, etc., or it can be a processing unit such as scheduling or link adaptation. Furthermore, when a TTI is given, the actual time interval (e.g., the number of symbols) that the transmission block, code block, codeword, etc., are mapped to can be shorter than that TTI.

[0198] Furthermore, when one time slot or one 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 become the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit for scheduling can also be controlled.

[0199] A TTI with a duration of 1ms can also be called a normal TTI (TTI in LTE Rel.8-12), a long TTI, a normal subframe, a long subframe, or a time slot. A TTI shorter than a normal TTI can also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini time slot, a sub-time slot, or a time slot.

[0200] Furthermore, for long TTIs (e.g., normal TTIs, subframes, etc.), they can be replaced with TTIs with a duration of more than 1ms. For short TTIs (e.g., shortened TTIs, etc.), they can be replaced with TTIs with a duration of less than long TTIs but more than 1ms.

[0201] A resource block (RB) is a unit of resource allocation in both the time and frequency domains. In the frequency domain, it can contain one or more consecutive subcarriers. The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can also be determined based on the parameter set.

[0202] In addition, the time domain of an RB can contain one or more symbols, which can be a time slot, a mini-time slot, a subframe, or a TTI in length. A TTI, a subframe, etc., can each be composed of one or more resource blocks.

[0203] In addition, one or more RBs can also be called Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB pair, etc.

[0204] In addition, a resource block can consist of one or more resource elements (REs). For example, one RE can be a radio resource area consisting of one subcarrier and one symbol.

[0205] The Bandwidth Part (BWP) (also known as partial bandwidth, etc.) can represent a subset of contiguous common resource blocks (RBs) used for a certain parameter set in a given carrier. Here, common RBs can be determined by indexing RBs based on a common reference point of that carrier. PRBs can be defined and numbered within a BWP.

[0206] A BWP can include a UL BWP and a DL BWP. One or more BWPs can be set for a UE within a single carrier.

[0207] At least one of the configured BWPs can be active, and the UE may not intend to transmit or receive predetermined signals / channels outside of the active BWP. Furthermore, the terms "cell," "carrier," etc., used in this disclosure can be replaced with "BWP."

[0208] The structures of radio frames, subframes, time slots, mini-time slots, and symbols described above are merely illustrative. For example, the number of subframes contained in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots contained within a time slot, the number of symbols and RBs contained in a time slot or mini-time slot, the number of subcarriers contained in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, and other structures can be varied in many ways.

[0209] 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, or the rated maximum transmit power.

[0210] In this disclosure, for example, in cases where articles are added through translation, such as in English (e.g., a, an, and the), this disclosure may also include cases where the noun following these articles is in a plural form.

[0211] In this disclosure, the phrase "A and B are different" can mean "A and B are not the same." Furthermore, this phrase 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."

[0212] The present disclosure has been described in detail above, but it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the present disclosure is for illustrative purposes only and is not intended to be limiting.

[0213] (Postscript)

[0214] The aforementioned disclosure can also be expressed as follows.

[0215] The first feature is a base station comprising: a control unit that allocates downlink or uplink to both a downlink band and an uplink band separated by a guard band in the frequency direction, according to each time unit divided by time division duplex; and a transceiver unit that transmits and receives data based on the allocation.

[0216] The second feature is that, in the first feature, the control unit performs the allocation independently in the downlink band domain and the uplink band domain.

[0217] The third feature is a base station comprising: a control unit that allocates a downlink or an uplink for one of a downlink band and an uplink band separated by a guard band in the frequency direction, in each time unit divided by time division duplex; and a transceiver unit that transmits and receives data based on the allocation, wherein the control unit allocates the downlink or the uplink for the other of the downlink band and the uplink band.

[0218] The fourth feature is that, in any of the first to third features, the control unit allocates the subband of the uplink within the band domain of the time unit allocated to the downlink.

[0219] The fifth feature is that, in the fourth feature, the control unit independently sets whether or not the subband can be allocated in the downlink band domain and the uplink band domain.

[0220] The sixth feature is that, in the third feature, the control unit allocates the uplink subband within the band domain of the time unit allocated to the downlink.

[0221] Label Explanation

[0222] 10 Wireless Communication Systems

[0223] 20 NG-RAN

[0224] 100 base stations

[0225] 110 Wireless Signal Transceiver Unit

[0226] 120 Enlarged Section

[0227] 130 Modulation and Demodulation Section

[0228] 140 Control Signal & Reference Signal Processing Unit

[0229] 150 Encoding / Decoding Unit

[0230] 160 Data Transceiver Department

[0231] 170 Control Department

[0232] 200 terminals

[0233] 210 Wireless Signal Transceiver Unit

[0234] 220 Control Department

[0235] 1001 processor

[0236] 1002 Memory

[0237] 1003 Storage device

[0238] 1004 Communication device

[0239] 1005 Input Device

[0240] 1006 Output Device

[0241] 1007 bus

[0242] Vehicle 2001

[0243] 2002 Drive Unit

[0244] 2003 Steering Unit

[0245] 2004 Accelerator Pedal

[0246] 2005 Brake Pedal

[0247] 2006 gearshift lever

[0248] Front wheels around 2007

[0249] 2008 rear wheels (left and right)

[0250] 2009 axle

[0251] 2010 Electronic Control Department

[0252] 2012 Information Service Department

[0253] 2013 Communication Module

[0254] 2021 Current Sensor

[0255] 2022 Speed ​​Sensor

[0256] 2023 Barometric Pressure Sensor

[0257] 2024 vehicle speed sensor

[0258] 2025 Accelerometer

[0259] 2026 Brake Pedal Sensor

[0260] 2027 Gearshift sensor

[0261] 2028 Object Detection Sensor

[0262] 2029 Accelerator Pedal Sensor

[0263] 2030 Driver Assistance Systems Department

[0264] 2031 microprocessor

[0265] 2032 Memory (ROM, RAM)

[0266] 2033 Communication Port (IO Port)

Claims

1. A base station, comprising: The control unit allocates downlink or uplink bandwidth to both the downlink and uplink bands, which are separated by a guard band in the frequency direction, according to each time unit divided by time division duplex; and The transceiver unit sends and receives data based on the allocation.

2. The base station according to claim 1, wherein, The control unit performs the allocation independently in the downlink band domain and the uplink band domain.

3. A base station, comprising: The control unit allocates downlink or uplink bandwidth for one of the downlink and uplink bandwidths separated by a guard band in the frequency direction, according to each time unit divided by time division duplex; and The transceiver unit, which sends and receives data based on the aforementioned allocation, The control unit allocates the downlink or the uplink to the other of the downlink band and the uplink band.

4. The base station according to claim 1, wherein, The control unit allocates the uplink subband within the band of the time unit allocated to the downlink.

5. The base station according to claim 4, wherein, The control unit independently sets whether or not the subband can be allocated in the downlink band domain and the uplink band domain.

6. The base station according to claim 3, wherein, The control unit allocates the uplink subband within the band of the time unit allocated to the downlink.

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