terminal

Abstract

The terminal searches for a wireless frequency according to at least one of a channel raster and a synchronization raster. The terminal searches for a wireless frequency according to at least one of a channel raster and a synchronization raster having a wider interval than when the frequency band is used in a different frequency band from a frequency band including one or more frequency ranges.

Description

Technical Field

[0001] The present invention relates to a terminal for performing wireless communication, and more particularly to a terminal for searching a wireless frequency according to at least any one of a channel grid and a synchronization grid. Background Art

[0002] In the 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE) is standardized, and with the aim of further speeding up LTE, standardization of LTE-Advanced (hereinafter referred to as LTE including LTE-Advanced) and the fifth generation mobile communication system (5th generation mobile communication system) (also known as 5G, New Radio (NR) or Next Generation (NG)) are also being carried out.

[0003] In 3GPP Release 15 and Release 16 (NR), the operation of the bands including multiple frequency ranges, specifically FR1 (410MHz to 7.125GHz) and FR2 (24.25GHz to 52.6GHz) is standardized. In the specifications after Release 16, the operation in the band exceeding 52.6GHz is also being studied (Non-Patent Document 1). The target frequency range in the study item (Study Item: SI) is 52.6GHz to 114.25GHz.

[0004] In addition, in Release 15 of 3GPP, the configuration of a channel raster and a synchronization raster applied to FR1 and FR2 is specified (see Non-Patent Documents 2 and 3).

[0005] The channel grid defines the RF reference frequencies (F) that can be used to identify the locations of uplink (UL) and downlink (DL) radio frequency (RF) channels. REF ). In addition, the synchronization grid can show the frequency positions of synchronization signal blocks that can be used by a terminal (User Equipment: UE) to obtain system information in the absence of explicit signaling of the synchronization signal block positions.

[0006] The channel grid is set based on the minimum subcarrier spacing (SCS) applicable to each frequency range (FR) (in the case of 3 GHz and above).

[0007] The synchronization grid is set based on fixed values ​​for each FR (FR1 = 1.44 MHz (above 3 GHz), FR2 = 17.28 MHz). In addition, the synchronization grid is limited so that the bandwidth of the synchronization signal block can be within the bandwidth when the minimum bandwidth carrier is placed in any channel grid.

[0008] Prior art literature

[0009] Non-patent literature

[0010] Non-patent document 1: 3GPP TR 38.807 V0.1.0, 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on requirements for NR beyond 52.6 GHz (Release 16), 3GPP, March 2019

[0011] Non-patent document 2: 3GPP TS 38.101-1 V15.6.0, 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone (Release 15), 3GPP, June 2019

[0012] Non-patent document 3: GPP TS 38.101-2 V15.6.0, 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone (Release 15), 3GPP, June 2019 Summary of the invention

[0013] However, when using a frequency band different from FR1 and FR2, such as a high frequency band exceeding 52.6 GHz, the channel grid and synchronization grid settings of Release 15 described above may not be appropriate.

[0014] Specifically, the channel grid and synchronization grid of Release 15 are defined to be applicable up to 100 GHz, and not to the frequency band exceeding 100 GHz. In addition, in this hetero-frequency band, it is assumed that the applicable subcarrier spacing is different from that of FR1 and FR2.

[0015] Therefore, the present invention has been made in view of such a situation, and an object of the present invention is to provide a terminal capable of using appropriate channel grid and synchronization grid settings even when using a different frequency band from FR1 / FR2.

[0016] One embodiment of the present disclosure is a terminal (UE 200) having a control unit (control unit 270) that searches for a wireless frequency based on at least one of a channel grid and a synchronization grid, wherein the control unit searches for the wireless frequency in a different frequency band (FR3, FR4) from a frequency band including one or more frequency ranges (FR1, FR2) based on the channel grid and at least one of the synchronization grids having a wider interval than when the frequency band is used.

[0017] One embodiment of the present disclosure is a terminal (UE 200) having a control unit (control unit 270) that searches for a wireless frequency based on at least one of a channel grid and a synchronization grid, and the control unit determines that the synchronization grid is not set in a different frequency band (FR3, FR4) from a frequency band including one or more frequency ranges (FR1, FR2). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a diagram schematically showing the overall structure of the wireless communication system 10 .

[0019] Figure 2 is a diagram showing a frequency range used in the wireless communication system 10 .

[0020] Figure 3 1 is a diagram showing a configuration example of a radio frame, a subframe, and a time slot used in the wireless communication system 10 .

[0021] Figure 4 It is a diagram showing a configuration example of a channel grid and a synchronization grid set in the wireless communication system 10 .

[0022] Figure 5 is a functional block diagram of UE 200.

[0023] Figure 6 This is a diagram showing a notification example (part 1) of NR-ARFCN involved in setting example 1.

[0024] Figure 7This is a diagram showing a notification example (part 2) of NR-ARFCN involved in setting example 1.

[0025] Figure 8 This is a diagram showing a notification example of NR-ARFCN involved in Setting Example 2.

[0026] Fig. 9 This is a diagram showing an example of the hardware configuration of the UE 200 . DETAILED DESCRIPTION

[0027] Hereinafter, the embodiments will be described based on the drawings. In addition, the same or similar reference numerals are given to the same functions and structures, and the description thereof will be appropriately omitted.

[0028] (1) Overall schematic structure of wireless communication system

[0029] Figure 1 The wireless communication system 10 according to the present embodiment is a general structure diagram of the wireless communication system 10. The wireless communication system 10 is a wireless communication system based on the 5G New Radio (NR), and includes a Next Generation-Radio Access Network (hereinafter referred to as NG-RAN 20) and a terminal 200 (hereinafter referred to as UE 200).

[0030] NG-RAN 20 includes a radio base station 100 (hereinafter, referred to as gNB 100). In addition, the specific structure of the wireless communication system 10 including the number of gNBs and UEs is not limited to Figure 1 Example shown.

[0031] The NG-RAN 20 actually includes a plurality of NG-RAN nodes, specifically, gNB (or ng-eNB), which is connected to a 5G core network (5GC, not shown). In addition, the NG-RAN 20 and 5GC may also be simply referred to as "network".

[0032] The gNB 100 is a 5G-compliant wireless base station and performs 5G-compliant wireless communications with the UE 200. The gNB 100 and the UE 200 can support massive MIMO (Multiple Input Multiple Output) that generates beams with higher directivity by controlling wireless signals transmitted from multiple antenna elements, carrier aggregation (CA) that bundles and uses multiple component carriers (CCs), and dual connectivity (DC) that simultaneously communicates between the UE and two NG-RAN nodes.

[0033] Furthermore, the wireless communication system 10 supports multiple frequency ranges (FR). Figure 2 The frequency range used in the wireless communication system 10 is shown.

[0034] like Figure 2 As shown, the wireless communication system 10 supports FR1 and FR2. The frequency band of each FR is as follows.

[0035] FR1: 410MHz~7.125GHz

[0036] FR2: 24.25 GHz to 52.6 GHz

[0037] In FR1, a sub-carrier spacing (SCS) of 15, 30 or 60 kHz is used, and a bandwidth (BW) of 5 to 100 MHz is used. FR2 has a higher frequency than FR1, and uses an SCS of 60 or 120 kHz (including 240 kHz) and a bandwidth (BW) of 50 to 400 MHz.

[0038] In addition, SCS can also be interpreted as a numerology. The numerology is defined in 3GPP TS38.300 and corresponds to a subcarrier spacing in the frequency domain.

[0039] Furthermore, the wireless communication system 10 also supports a frequency band higher than that of FR2. Specifically, the wireless communication system 10 supports a frequency band exceeding 52.6 GHz up to 114.25 GHz. Here, for convenience, such a high frequency band is referred to as "FR4". FR4 belongs to the so-called EHF (also known as extremely high frequency, millimeter wave). In addition, FR4 is a temporary name and may also be referred to by other names.

[0040] In addition, FR4 can be further divided. For example, FR4 can be divided into a frequency range below 70 GHz and a frequency range above 70 GHz. Alternatively, FR4 can also be divided into more frequency ranges and can also be divided in frequencies other than 70 GHz.

[0041] In addition, here, for convenience, the frequency band between FR1 and FR2 is referred to as “FR3.” FR3 is a frequency band exceeding 7.125 GHz and less than 24.25 GHz.

[0042] In the present embodiment, FR3 and FR4 are different from the frequency band including FR1 and FR2, and are referred to as different frequency bands.

[0043] In particular, in high frequency bands such as FR4, as described above, the increase in phase noise between carriers becomes a problem, and therefore, it may be necessary to apply a larger (wider) SCS or a single carrier waveform.

[0044] In addition, due to the increased propagation loss, narrower beams (i.e., more beams) may be required. Also, due to the increased sensitivity to PAPR and power amplifier nonlinearity, a larger (wider) SCS (and / or a smaller number of FFT points), PAPR reduction mechanisms, or single carrier waveforms may be required.

[0045] In order to solve such a problem, in this embodiment, when using a band exceeding 52.6 GHz, cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) / discrete Fourier transform-spread OFDM (DFT-S-OFDM) with a larger sub-carrier spacing (SCS) can be applied.

[0046] However, as the SCS increases, the symbol / cyclic prefix (CP) period and the slot period become shorter (when the structure of 14 symbols / slot is maintained). Figure 3 1 and 2 show configuration examples of radio frames, subframes, and time slots used in the wireless communication system 10. Table 1 shows the relationship between the SCS and the symbol period.

[0047] [Table 1]

[0048]

[0049] As shown in Table 1, while maintaining the structure of 14 symbols / time slot, the larger (wider) the SCS is, the shorter the symbol period (and the time slot period) is.

[0050] Figure 4 FIG. 2 shows an example of a channel grid and a synchronization grid configured in the wireless communication system 10. Figure 4 As shown in FIG. 1 , the channel raster corresponds to the center frequency of the carrier. The channel raster can also be interpreted as the minimum setting unit when determining the center frequency of the carrier within the channel bandwidth. For example, in the case of a 60kHz channel raster, the center frequency can be set in units of 60kHz.

[0051] Specifically, the channel grid defines a radio frequency (RF) reference frequency (F) that can be used to identify the location of uplink (UL) and downlink (DL) radio frequency (RF) channels. REF ). In addition, the channel grid may also be referred to as a frequency grid or a frequency channel grid, etc.

[0052] F REFIt is specified by the NR Absolute Radio Frequency Channel Number (NR-ARFCN). REF The following provisions are made: The NR absolute radio frequency channel number may be abbreviated to a frequency channel number or the like.

[0053] F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs )

[0054] Here, N REF is NR-ARFCN. ΔF Global Indicates the granularity of the channel grid. REF-Offs and N REF-Offs It is used to calculate F REF The offset is assigned through the table specified in 3GPP TS38.101-1 (FR1) or 38.101-2 (FR2).

[0055] In FR1 and FR2, the channel grid is as follows.

[0056] (FR1)

[0057] 0~3GHz: every 5kHz

[0058] 3~24.25GHz: every 15kHz

[0059] (FR2)

[0060] 24.25~100GHz:every 60kHz

[0061] The synchronization raster can show the frequency position of the synchronization signal block (SS / PBCH Block) that can be used by the UE 200 to obtain system information, specifically, to obtain the system information block 1 (also referred to as the remaining minimum system information (RMSI)). The synchronization raster can also be interpreted as a frequency position for searching for the presence of a synchronization signal (SS) when the UE 200 performs initial access to the wireless communication system 10 or performs cell reselection.

[0062] The frequency position of the SS / PBCH block is defined as the SS with the corresponding NR Global Synchronization Channel Number (NR-GSCN). REF . The NR global synchronization channel number can also be omitted as the synchronization channel number, etc.

[0063] In FR1 and FR2, the synchronization grid is as follows.

[0064] (FR1)

[0065] 0~3GHz: 3 positions with 100kHz intervals every 1.2MHz

[0066] 3~24.25GHz: every 1.44MHz

[0067] (FR2)

[0068] 24.25~100GHz: every 17.28MHz

[0069] In this embodiment, a channel grid and a synchronization grid are set for a high frequency band such as FR4 (or a different frequency band including FR3 from FR1 and FR2). The details of this setting will be described later.

[0070] (2) Functional block structure of wireless communication system

[0071] Next, a functional block configuration of the wireless communication system 10 will be described. Specifically, a functional block configuration of the UE 200 will be described.

[0072] Figure 5 is a functional block diagram of UE 200. Figure 5 As shown, UE 200 includes a radio signal transceiver 210 , an amplifier 220 , a modulation and demodulation unit 230 , a control signal / reference signal processing unit 240 , an encoding / decoding unit 250 , a data transceiver 260 , and a control unit 270 .

[0073] The wireless signal transceiver 210 transmits and receives wireless signals in accordance with NR. The wireless signal transceiver 210 supports Massive MIMO, CA in which a plurality of CCs are bundled and used, and DC in which the UE and two NG-RAN nodes communicate simultaneously.

[0074] In addition, the wireless signal transceiver 210 transmits and receives wireless signals of a predetermined wireless frequency according to a channel grid and a synchronization grid applied in the wireless communication system 10 .

[0075] As described above, SS / PBCH blocks (SSBs) are transmitted from gNB 100 on a carrier frequency specified by a synchronization grid (NR-GSCN).

[0076] SSB is a block of synchronization signals / broadcast channels composed of SS (Synchronization Signal) and PBCH (Physical Broadcast Channel). It is mainly sent periodically by UE 200 to perform cell ID or reception timing detection at the start of communication. SSB is also used for reception quality measurement of each cell.

[0077] SS is composed of a primary synchronization signal (PSS: Primary SS) and a secondary synchronization signal (SSS: Secondary SS).

[0078] The PSS is a known signal that the UE 200 initially attempts to detect during the cell search process. The SSS is a known signal that is transmitted during the cell search process in order to detect a physical cell ID.

[0079] PBCH includes the radio frame number (SFN: System Frame Number), an index for identifying the symbol positions of multiple SS / PBCH blocks within a half frame (5 milliseconds), and other information required for UE 200 to establish frame synchronization with the NR cell formed by gNB 100 after detecting the SS / PBCH block.

[0080] In addition, the PBCH may also include system parameters required for receiving system information (SIB).

[0081] The amplifier 220 is composed of a power amplifier (PA) / a low noise amplifier (LNA) etc. The amplifier 220 amplifies the signal output from the modulation and demodulation unit 230 to a predetermined power level. In addition, the amplifier 220 amplifies the RF signal output from the wireless signal transmission and reception unit 210 .

[0082] The modem unit 230 performs data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication target (gNB 100 or other gNB).

[0083] In this embodiment, CP-OFDM and DFT-S-OFDM can be applied. In particular, in this embodiment, DFT-S-OFDM can be used not only for uplink (UL) but also for downlink (DL).

[0084] The control signal / reference signal processing unit 240 performs processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200 .

[0085] Specifically, the control signal / reference signal processing unit 240 receives various control signals, such as control signals of the radio resource control layer (RRC), transmitted from the gNB 100 via a predetermined control channel. In addition, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.

[0086] Furthermore, the control signal / reference signal processing unit 240 performs processing using reference signals (RS) such as a demodulation reference signal (DMRS) and a phase tracking reference signal (PTRS).

[0087] DMRS is a terminal-specific reference signal (pilot signal) known between a base station and a terminal for estimating a fading channel used for data demodulation. PTRS is a terminal-specific reference signal for estimating phase noise, which is a problem in a high frequency band.

[0088] In addition, the reference signal includes a channel state information-reference signal (CSI-RS: Channel State Information-Reference Signal) and a sounding reference signal (SRS: Sounding Reference Signal) in addition to the DMRS and PTRS.

[0089] In addition, the channels include control channels and data channels. The control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), PRACH (Physical Random Access Channel), PBCH and the like.

[0090] The data channel includes PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel) etc. Data refers to data transmitted via the data channel.

[0091] The encoding / decoding unit 250 performs data segmentation / concatenation and channel coding / decoding, etc. for each predetermined communication target (gNB 100 or other gNB).

[0092] Specifically, the encoding / decoding unit 250 divides the data output from the data transceiver unit 260 into predetermined sizes and performs channel coding on the divided data. In addition, the encoding / decoding unit 250 decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.

[0093] The data transceiver 260 performs transmission and reception of protocol data units (PDUs) and service data units (SDUs). Specifically, the data transceiver 260 performs assembly / disassembly of PDUs / SDUs in multiple layers (such as the medium access control layer (MAC), the radio link control layer (RLC), and the packet data convergence protocol layer (PDCP)). In addition, the data transceiver 260 performs error correction and retransmission control of data based on the hybrid automatic repeat request (HARQ).

[0094] The control unit 270 controls each functional block constituting the UE 200. In particular, in the present embodiment, the control unit 270 searches for a radio frequency based on at least one of a channel raster and a synchronization raster.

[0095] The control unit 270 controls the channel grid, specifically, the RF reference frequency (F REF ), and searches the range of the wireless frequency. In addition, the control unit 270 searches the range of the wireless frequency according to the synchronization grid, specifically, according to the frequency position of the SS / PBCH Block (SS REF ), search the range of the wireless frequency. In addition, the search may also be replaced by monitoring or scanning the range of the wireless frequency, etc.

[0096] In addition, information related to the channel grid to be searched and the position of the synchronization grid (including NR-ARFCN or NR-GSCN) can be pre-defined within the wireless communication system 10 (NR system) or notified through low-layer (L1) or high-layer (RRC, etc.) signaling.

[0097] In this embodiment, the control unit 270 can search for a wireless frequency in a frequency band including one or more frequency ranges (FR), specifically, in at least one of FR3 and FR4 (different frequency bands) different from FR1 and FR2, based on at least one of a channel grid and a synchronization grid having a wider interval than when FR1 and FR2 are used. The "interval" mentioned here refers to the interval of the frequency at which the channel grid or the synchronization grid is configured, but can also be interpreted as the interval of the grid.

[0098] Alternatively, the control unit 270 may determine that the synchronization grid is not set in at least a part of the band of FR3 and FR4 (inter-frequency band). In other words, the control unit 270 determines that the independent (SA) operation of NR is not supported in the inter-frequency band and the primary cell (PCell) is not set.

[0099] Furthermore, the control unit 270 may determine the position of the synchronization grid where the system information is notified based on a numerical value indicating an offset or range of the NR-GSCN (synchronization channel number).

[0100] Specifically, the control unit 270 can be based on the values ​​related to the offset and range of NR-GSCN specified in Chapter 13 of 3GPP TS38.213, specifically, based on the k contained in the PBCH. SSB and pdcch-ConfigSIB1 to determine the synchronization grid in which SIB1 (RMSI) is notified.

[0101] Alternatively, the control unit 270 may determine the position of the synchronization grid where SIB1 (RMSI) is notified based on a numerical value indicating an offset or range of NR-GSCN (synchronization channel number) notified using a part of a synchronization signal block or a reference signal.

[0102] The synchronization signal block mentioned here includes PSS, SSS and PBCH. In addition, the reference signal mentioned here includes DMRS, but may also include other reference signals (RS) mentioned above.

[0103] In addition, a specific method for determining the position of the synchronization grid will be described later.

[0104] (3) Operation of wireless communication system

[0105] Next, the operation of the wireless communication system 10 will be described. Specifically, the problem of applying the channel grid and synchronization grid specified for FR1 and FR2 to high frequency bands such as FR4 will be described, and the channel grid and synchronization grid search operation of the UE 200 that can solve this problem will be described.

[0106] (3.1)Topic

[0107] As described above, the channel grid and the synchronization grid are defined for FR2 with a frequency of up to 100 GHz as the target, and therefore, are not defined for the frequency range of 100 GHz to 114.25 GHz in FR4.

[0108] In addition, the channel grid (above 3 GHz) is defined based on the minimum available subcarrier spacing (FR1: 15 kHz, FR2: 60 kHz). On the other hand, as mentioned above, in the case of FR3 or FR4, the minimum available subcarrier spacing (SCS) may become larger than the SCS of FR1 or FR2.

[0109] Therefore, there may be cases where it is not necessarily appropriate to directly apply the channel grid for FR1 or FR2 to FR3 or FR4. However, for the value of NR-ARFCN, a frequency up to 100 GHz has been defined as the target.

[0110] The synchronization grid is constrained so that the bandwidth of the SSB can be within the minimum channel bandwidth when any channel grid is used. In the case of FR3 or FR4, at least one of the minimum channel bandwidth and the bandwidth of the SSB may be different from that for FR1 or FR2.

[0111] Therefore, similar to the channel grid, there may be cases where it is not necessarily appropriate to directly apply the synchronization grid for FR1 or FR2 to FR3 or FR4.

[0112] (3.2) Setting the channel grid and synchronization grid for the new frequency range

[0113] Hereinafter, a setting example of a new channel grid and a synchronization grid for FR (FR3 or FR4) that supports multiple frequency ranges (FR) and can avoid the complexity of the operation of the UE 200 will be described.

[0114] Specifically, the following setting examples will be described.

[0115] (Setting Example 1): When the frequency exceeds 100 GHz (e.g., up to 114.25 GHz), the channel grid and synchronization grid for frequencies below 100 GHz are reused.

[0116] (Setting Example 2): When the frequency exceeds 100 GHz, set a new channel grid and / or synchronization grid

[0117] (Setting Example 3): When the frequency exceeds the predetermined frequency of 52.6 GHz, a new channel grid and / or synchronization grid is set.

[0118] (Setting Example 4): When the frequency exceeds the predetermined frequency of 52.6 GHz or more, the synchronization grid is not set.

[0119] Here, the new channel grid and synchronization grid are characterized in that the frequency interval is wider than the channel grid and synchronization grid for FR1 or FR2.

[0120] Hereinafter, each setting example will be described.

[0121] (3.2.1) Setting example 1

[0122] In this setting example, even in a frequency band exceeding 100 GHz, the channel raster and synchronization raster for frequencies below 100 GHz are reused.

[0123] Table 2 shows channel grid (NR-ARFCN) related parameters in configuration example 1. Table 2 corresponds to the table for FR2 specified in 3GPP TS38.101-2, and the dashed parts indicate the changed parts (the same applies hereinafter).

[0124] [Table 2]

[0125] Table 5.4.2.1-1: NR-ARFCN parameters for global frequency grid

[0126] Frequency range(MHz) <![CDATA[ΔF Global (MHz)]]> <![CDATA[F REF-Offs [MHz]]]> <![CDATA[N REF-Offs ]]> <![CDATA[N REF Range]]> <![CDATA[24250- 114250 ]]> 60 24250.08 2016667 <![CDATA[2016667- 3516665 ]]>

[0127] As shown in Table 2, FR extends to 114.25 GHz, and N REF (NR-ARFCN) also expanded to 3516665.

[0128] Figure 6 and Figure 7 An example of notification of NR-ARFCN involved in setting example 1 is shown. Specifically, Figure 6 An example of notification of NR-ARFCN included in the RRC multiplicity and type constraint values ​​specified in Chapter 6.4 of 3GPP TS 38.331 is shown.

[0129] like Figure 6 As shown in FIG. 1 , 3516665 is notified as the maximum value of NR-ARFCN, that is, "maxNARFCN-r17" indicating the maximum value of the NR carrier frequency. Figure 6 In the specification, it is expressed as "maxNARFCN-r17" (assuming 3GPP Release 17), but it can also be another version (for example, Release 18).

[0130] Figure 7This shows an example of notification of NR-ARFCN included in FrequencyInfoDL and FrequencyInfoUL, etc., specified in 3GPP TS38.331 Chapter 6.3.2 ( Figure 7 An example of FrequencyInfoDL is shown).

[0131] like Figure 7 As shown in Figure 1, the maximum value of NR-ARFCN is notified by "ARFCN-ValueNR-r17". Figure 7 In the NR17 protocol, it is also written as "ARFCN-ValueNR-r17" (assuming 3GPP version 17), but it can also be other versions (for example, version 16).

[0132] Table 3 shows the synchronization grid (NR-GSCN) related parameters in setting example 1.

[0133] [Table 3]

[0134] Table 5.4.3.1-1: GSCN parameters for global frequency grid

[0135]

[0136] As shown in Table 3, FR extends to 114.25 GHz, and SS REF The N used in the calculation of is extended to 5208. In addition, the range of NR-GSCN (GSCN) is extended to 27464.

[0137] In this way, FR is changed to 114.25 GHz, and the ranges of NR-ARFCN and NR-GSCN are changed, but the basic settings of the channel grid and the synchronization grid are the same as those for FR1 or FR2.

[0138] (3.2.2) Setting example 2

[0139] In this setting example, when the frequency exceeds 100 GHz, a new channel grid and / or synchronization grid is set. Hereinafter, the differences from the setting example 1 described above will be mainly described.

[0140] Table 4 shows the channel grid (NR-ARFCN) associated parameters in setting example 2.

[0141] [Table 4]

[0142] Table 5.4.2.1-1: NR-ARFCN parameters for global frequency grid

[0143] Frequency range(MHz) <![CDATA[ΔF Global (MHz)]]> <![CDATA[F REF-Offs [MHz]]]> <![CDATA[N REF-Offs ]]> <![CDATA[N REF Range]]> 24250-100000 60 24250.08 2016667 2016667-3279165 <![CDATA[ 10000-114250 ]]> <![CDATA[

[240] ]]> <![CDATA[ 100000.02 ]]> <![CDATA[ 3279166 ]]> <![CDATA[ 3279166-[3338540] ]]>

[0144] As shown in Table 4, ΔF represents the granularity of the channel grid. Global It is set to a value (240kHz) larger than 60kHz for frequencies below 100GHz. Global (and F REF ) may be consistent with or different from the minimum SCS among the SCS available in the FR (100 to 114.25 GHz), but is preferably larger than the value applied to below 100 GHz.

[0145] In addition, as shown in Table 4, N REF (NR-ARFCN) is also extended to 3338540.

[0146] Figure 8 An example of notification of NR-ARFCN involved in setting example 2 is shown. Specifically, Figure 6 same, Figure 8 An example of notification of NR-ARFCN included in the RRC multiplicity and type constraint values ​​specified in Chapter 6.4 of 3GPP TS38.331 is also shown.

[0147] like Figure 8 As shown, 3338540 is notified as the maximum value of NR-ARFCN (maxNARFCN-r17).

[0148] In addition, the notification and setting example 1 of NR-ARFCN included in FrequencyInfoDL and FrequencyInfoUL, etc. (refer to Figure 6 )same.

[0149] Table 5 shows the synchronization grid (NR-GSCN) associated parameters in setting example 2.

[0150] [Table 5]

[0151] Table 5.4.3.1-1: GSCN parameters for global frequency grid

[0152]

[0153] As shown in Table 5, in a frequency band exceeding 100 GHz, the interval of the synchronization grid becomes larger than 17.28 MHz. Specifically, the interval of the synchronization grid depends on the minimum channel bandwidth and the bandwidth of the SSB. In addition, in a frequency band exceeding 100 GHz, the minimum channel bandwidth is preferably wider than 50 MHz.

[0154] SS REF The range of N and NR-GSCN (GSCN) used in the calculation is also expanded according to the setting of the interval of such synchronization grid.

[0155] (3.2.3) Setting example 3

[0156] In this setting example, when the predetermined frequency exceeds 52.6 GHz or more, a new channel grid and / or synchronization grid is set.

[0157] Table 6 shows the channel grid (NR-ARFCN) associated parameters in setting example 2.

[0158] [Table 6]

[0159] Table 5.4.2.1-1: NR-ARFCN parameters for global frequency grid

[0160]

[0161] As shown in Table 6, ΔF Global It is set to a value larger than 60 kHz for use below 52.6 GHz (e.g., 120 kHz). Global (and F REF ) may be consistent with or different from the minimum SCS among the SCSs that can be used in this FR (52.6~114.25GHz).

[0162] In addition, in Table 6, the ΔF to be applied is determined by whether the frequency is below 52.6 GHz. Global Different, but different (larger) ΔF Global The starting frequency to be applied may be set to other than 52.6 GHz, for example, 70.0 GHz.

[0163] In addition, NR-ARFCN (N REF ) may also be newly defined. For example, the values ​​of NR-ARFCN specified in the channel grid for FR2 may also be reused for other frequency locations (e.g., because there are actually unused values ​​in Release 15). In addition, the range and / or maximum value of NR-ARFCN may or may not be extended.

[0164] Alternatively, the range and / or maximum value of NR-ARFCN may be extended in the same manner as in Setting Example 1 or Setting Example 2.

[0165] In addition, the notification of NR-ARFCN is the same as in Setting Example 2.

[0166] Table 7 shows the synchronization grid (NR-GSCN) associated parameters in setting example 3.

[0167] [Table 7]

[0168] Table 5.4.3.1-1: GSCN parameters for global frequency grid

[0169]

[0170] As shown in Table 7, in the frequency band exceeding 52.6 GHz, the interval of the synchronization grid becomes larger than 17.28 MHz. In addition, as in setting example 2, the interval of the synchronization grid depends on the minimum channel bandwidth and the bandwidth of the SSB. In addition, in the frequency band exceeding 52.6 GHz, the minimum channel bandwidth is preferably wider than 50 MHz.

[0171] In Table 7, the interval of the applied synchronization grid is different depending on whether it is below 52.6 GHz, but the starting frequency at which a different (larger) synchronization grid interval is applied can also be set to other than 52.6 GHz, such as 70.0 GHz. In addition, the starting frequency can also be different in the channel grid and the synchronization grid.

[0172] Similar to NR-ARFCN, the range of NR-GSCN may be newly defined. For example, the NR-GSCN values ​​specified in the synchronization grid for FR1 or FR2 may be reused for other frequency positions.

[0173] Alternatively, the scope of NR-GSCN can also be expanded to Setting Example 1 or Setting Example 2 in the same manner.

[0174] (3.2.4) Setting example 4

[0175] In this setting example, in the case of a predetermined frequency exceeding 52.6 GHz, the synchronization grid is not set. The non-setting of the synchronization grid can also be replaced by undefined. That is, in the wireless communication system 10 (NR system), in the frequency band exceeding the predetermined frequency above 52.6 GHz, the synchronization grid indicating the frequency position of the SSB is not used.

[0176] In the case of this configuration example, the UE 200 can assume that the frequency band exceeding the predetermined frequency of 52.6 GHz is not used for the PCell. Therefore, the UE 200 does not perform initial access or cell reselection in this frequency band.

[0177] (3.2.5) Others

[0178] The contents of the above-mentioned setting examples 1 to 4 can be applied to either the channel grid or the synchronization grid, or can be applied to both at the same time.

[0179] (3.3) NR-GSCN offset / range indication

[0180] Next, in the above-mentioned configuration examples 1 to 3, an example is described in which the network indicates the offset / range of NR-GSCN to UE 200. Specifically, the offset and range of NR-GSCN specified in Chapter 13 of 3GPP TS38.213 are used.

[0181] Tables 8 and 9 are tables associated with the offset of NR-GSCN specified in Chapter 13 of 3GPP TS38.213.

[0182] [Table 8]

[0183] Table 13-16: k in pdcch-ConfigSIB1 for FR1 SSB and the combination of ControlResourceSetZero and searchSpaceZero with The mapping between

[0184]

[0185] [Table 9]

[0186] Table 13-17: k in pdcch-ConfigSIB1 for FR2 SSB and the combination of ControlResourceSetZero and searchSpaceZero with The mapping between

[0187]

[0188] In k SSB When k is 24 to 31 (in the case of FR1) or 12 to 15 (in the case of FR2), UE 200 assumes that the SSB detected by the search does not include system information, specifically, does not include SIB1 (RMSI). SSB In the case where the value is other than the above, UE 200 recognizes that SSB The subcarrier offset between the detected SSB RB and the SIB1 PDCCH / PDSCH RB.

[0189] Specifically, as shown in Tables 8 and 9, in k SSB When it is 24 to 30 (FR1) or 12 to 14 (FR2), UE 200 recognizes the GSCN offset between the SSB including SIB1 based on "pdcch-ConfigSIB1".

[0190] In addition, in k SSBWhen it is 31 (FR1) or 15 (FR2), UE 200 recognizes, based on "pdcch-ConfigSIB1", that there is no range of GSCN including SSB of SIB1.

[0191] In this embodiment, when SSB is sent in FR1, FR2, that is, the existing frequency range, the reserved entries shown in Tables 8 and 9 (refer to the underlined parts) can be used to show the GSCN range taking into account GSCN offset and / or high frequency bands such as FR4.

[0192] For example, the network may use the reserved entry to give the UE 200 the following instructions.

[0193] (Indication example 1): Indicating the presence or absence of a synchronization grid in which SSB is transmitted in a predetermined frequency range

[0194] Therefore, in the absence of a synchronization grid in which the SSB is transmitted, the UE 200 can also omit the search of the frequency range.

[0195] (Indication example 2): Indication that the GSCN offset is greater than 256 or less than -256

[0196] In addition, the granularity of a value greater than 256 and / or a value less than -256 may be set to 1 or more.

[0197] Furthermore, when SSB is transmitted in a high frequency band such as FR4 (or FR3), the network can use the reserved entry to instruct UE 200 as follows according to the above-mentioned setting examples 1 to 3.

[0198] (In the case of setting example 1): As in FR1 and FR2, in order to indicate the subcarrier offset between the resource block (RB) of the SSB and the RB of the PDCCH / PDSCH, k may be required. SSB . In k SSB When the GSCN offset is a specific value, the UE 200 may also identify the GSCN offset and / or the GSCN range according to "pdcch-ConfigSIB1".

[0199] In this case, the GSCN offset value and granularity may be the same as or different from FR2. In addition, the range (start and end) and / or granularity of the GSCN may be the same as or different from FR2.

[0200] (In the case of setting examples 2 and 3): Unlike setting example 1, there may be a situation where k SSB The situation where k is not required SSBFor example, the channel grid and / or synchronization grid may be defined so that the positions of the SSB RB and the PDCCH / PDSCH RB are aligned. In this case, specifically, the network can indicate by any one of the following methods.

[0201] (Method 1): Use at least one PBCH bit to indicate whether the SSB is associated with SIB1 (RMSI)

[0202] In case the SSB is not associated with SIB1 (RMSI), the bits of "pdcch-ConfigSIB1" are used along with other PBCH bits to indicate the GSCN offset and / or GSCN range.

[0203] In addition, as in the case of setting example 1, the GSCN offset value and granularity, the range (start and end) and / or granularity of GSCN may be the same as or different from FR2.

[0204] (Method 2): Use any one of the PSS / SSS / DMRS contained in the PBCH sequence to indicate whether the SSB is associated with SIB1 (RMSI)

[0205] In this case, the display of GSCN offset and range may be the same as in method 1.

[0206] (Method 3): UE 200 assumes that the SSB in the high frequency band is not associated with SIB1 (RMSI) (corresponding to the above-mentioned setting example 4)

[0207] In this case, of course, the display of the GSCN offset and range is not required.

[0208] (4) Function / Effect

[0209] According to the above embodiment, the following effects can be obtained: Specifically, when FR3 or FR4 is used, UE 200 can search for a radio frequency in the frequency band based on at least one of a channel raster and a synchronization raster having a wider interval than when FR1 or FR2 is used.

[0210] Therefore, even when a different frequency band from FR1 and FR2 such as a high frequency band exceeding 52.6 GHz is used and the subcarrier spacing (SCS) is increased, UE 200 can use appropriate channel grid and synchronization grid settings.

[0211] Furthermore, UE 200 can determine that a synchronization grid is not set in an inter-frequency band different from FR1 and FR2. Therefore, even when the inter-frequency band does not support standalone (SA) operation, UE 200 can use appropriate channel grid and synchronization grid settings.

[0212] In this embodiment, UE 200 can determine the position of the synchronization grid where SIB1 (RMSI) is notified based on the PBCH including information indicating the offset or range of NR-GSCN (synchronization channel number). Alternatively, UE 200 can determine the position of the synchronization grid where SIB1 (RMSI) is notified based on a numerical value indicating the offset or range of NR-GSCN (synchronization channel number) notified using a part of the synchronization signal block or reference signal.

[0213] Therefore, the UE 200 can skip the synchronization raster where the SIB1 (RMSI) is not notified, and efficiently search for the position of the synchronization raster where the SIB1 (RMSI) is notified, based on the value notified from the network.

[0214] (5) Other Implementation Methods

[0215] As mentioned above, although the content of this invention was demonstrated based on an Example, this invention is not limited to these descriptions, and it is obvious to a person skilled in the art that various deformation|transformation and improvement are possible.

[0216] For example, in the above-mentioned embodiment, the description is mainly based on FR4 exceeding 52.6 GHz, but the above-mentioned channel grid and / or synchronization grid setting example can also be applied to FR3 or the like which has a frequency lower than 52.6 GHz.

[0217] Furthermore, although partially described in the above embodiments, the starting frequency to which the setting of a new channel grid and / or synchronization grid different from FR1 and FR2 is applied is not limited to 52.6 GHz or 100 GHz, but may be 70 GHz or other frequencies.

[0218] The block diagram used in the description of the above-mentioned embodiment ( Figure 5 ) shows blocks in units of functions. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly connected (for example, using wires, wirelessly, etc.) and implemented using these multiple devices. The functional block can also be implemented by combining software with the above-mentioned one device or the above-mentioned multiple devices.

[0219] Functionally, it includes judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but is not limited to these. For example, the functional block (structural part) that enables the sending function is called a transmitting unit or a transmitter. In short, as mentioned above, there is no particular limitation on the implementation method.

[0220] Furthermore, the above-mentioned UE 200 may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 9 2 is a diagram showing an example of the hardware configuration of UE 200. Fig. 9 As shown, UE 200 may also be configured as a computer device including a processor 1001, a memory 1002 (memory), a storage 1003 (storage), a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0221] In the following description, the word "device" may be replaced by "circuit", "device", "unit", etc. The hardware structure of the device may include one or more of the devices shown in the figure, or may exclude some of the devices.

[0222] Each functional block of UE 200 (see Figure 5 ) is implemented by any hardware element or combination of hardware elements of the computer device.

[0223] In addition, each function in UE 200 is implemented by the following method: predetermined software (program) is read into hardware such as processor 1001 and memory 1002, so that processor 1001 performs calculations and controls the communication of communication device 1004 or controls at least one of the reading and writing of data in memory 1002 and storage 1003.

[0224] The processor 1001 controls the entire computer by, for example, running an operating system. The processor 1001 may be constituted by a central processing unit (CPU) including an interface with peripheral devices, a control device, a calculation device, a register, and the like.

[0225] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and performs various processes accordingly. As a program, a program that causes a computer to perform at least a part of the actions described in the above-mentioned embodiments is used. In addition, with respect to the above-mentioned various processes, although it is described that the above-mentioned various processes are performed by one processor 1001, the above-mentioned various processes can also be performed simultaneously or sequentially by more than two processors 1001. The processor 1001 can also be installed by more than one chip. In addition, the program can also be sent from the network via a telecommunication line.

[0226] The memory 1002 is a computer-readable recording medium, and may be composed of at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 may store a program (program code), a software module, etc. that can be executed to implement a method according to an embodiment of the present disclosure.

[0227] The memory 1003 is a computer-readable recording medium, and may be composed of at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a floppy disk, a magneto-optical disk (e.g., a compressed disk, a digital versatile disk, a Blu-ray (registered trademark) disk, a smart card, a flash memory (e.g., a card, a stick, a key drive), a Floppy (registered trademark) disk, a magnetic strip, etc. The memory 1003 may also be referred to as an auxiliary storage device. The above-mentioned recording medium may be, for example, other appropriate media such as a database, a server, etc. that includes at least one of the memory 1002 and the memory 1003.

[0228] The communication device 1004 is hardware (transceiver) used to communicate between computers via at least one of a wired network and a wireless network, and may also be called a network device, a network controller, a network card, a communication module, etc.

[0229] The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like, for example, in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0230] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, an LED light, etc.). In addition, the input device 1005 and the output device 1006 may also be integrally formed (e.g., a touch panel).

[0231] In addition, the processor 1001 and the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or may be configured using different buses for each device.

[0232] In addition, the device may 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), a field programmable gate array (FPGA), etc., and a part or all of each functional block may be implemented by the hardware. For example, the processor 1001 may also be installed using at least one of these hardware.

[0233] In addition, the notification of information is not limited to the form / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), high-layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals or a combination thereof. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0234] Each form / embodiment described in the present disclosure may also be applied to at least one of LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA 2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), a system using other appropriate systems, and a next-generation system extended therefrom. In addition, a combination of a plurality of systems (for example, a combination of at least one of LTE and LTE-A with 5G, etc.) may be applied.

[0235] The processing procedures, timings, processes, etc. of each form / implementation described in this disclosure may be changed in order without contradiction. For example, for the method described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0236] In the present disclosure, specific actions performed by a base station are sometimes performed by its upper node depending on the situation. In a network consisting of one or more network nodes having a base station, various actions performed to communicate with a terminal can be performed by at least one of the base station and other network nodes other than the base station (for example, consider MME or S-GW, etc., but not limited to these). In the above, the case where there is one other network node other than the base station is illustrated, but the other network node may also be a combination of multiple other network nodes (for example, MME and S-GW).

[0237] Information, signals (information, etc.) can be output from a higher layer (or lower layer) to a lower layer (or higher layer), and can also be input or output via multiple network nodes.

[0238] The input or output information can be stored in a specific location (e.g., memory) or managed using a management table. The input or output information can be rewritten, updated, or appended. The output information can also be deleted. The input information can also be sent to other devices.

[0239] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value (Boolean: true or false), or by comparison of numerical values ​​(for example, comparison with a predetermined value).

[0240] Each form / implementation described in the present disclosure may be used alone or in combination, and may be switched depending on the execution. In addition, notification of scheduled information is not limited to being performed explicitly (e.g., notification of "yes X"), but may also be performed implicitly (e.g., notification of the scheduled information is not performed).

[0241] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be interpreted broadly to refer to commands, sets of commands, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0242] In addition, software, commands, information, etc. may be sent and received via a transmission medium. For example, when software is sent from a web page, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0243] The information, signals, etc. described in the present disclosure may also be represented by any of a variety of different technologies. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be involved in the above description as a whole may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0244] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may also be a signal (signaling). In addition, a signal may also be a message. In addition, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0245] As used in this disclosure, the terms "system" and "network" may be used interchangeably.

[0246] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources may also be indicated by indexes.

[0247] The names used for the above parameters are not limiting in any way. Furthermore, the formulas etc. using these parameters may sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by all appropriate names, and therefore the various names assigned to these various channels and information elements are not limiting in any way.

[0248] In the present 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", "component carrier" and the like are used interchangeably. Base stations are sometimes referred to as macrocells, small cells, femtocells, picocells, etc.

[0249] A base station can accommodate one or more (for example, 3) 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, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (RRH: Remote Radio Head)).

[0250] The terms "cell" or "sector" refer to a part or the entirety of a coverage area of ​​at least one of a base station and a base station subsystem that provide communication services within the coverage area.

[0251] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (user terminal)”, “user equipment (UE)”, and “terminal” may be used interchangeably.

[0252] 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, handset, user agent, mobile client, client, or some other appropriate terms.

[0253] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may be a means of transportation (e.g., a car, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0254] In addition, the base station in the present disclosure may also be replaced by a mobile station (user terminal, the same below). For example, regarding a structure in which the communication between a base station and a mobile station is replaced by communication between multiple mobile stations (for example, it may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything, etc.), the various forms / implementations of the present disclosure may also be applied. In this case, it may also be a structure in which the mobile station has the functions of the base station. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced by a side channel.

[0255] Likewise, the mobile station in the present disclosure may be replaced by a base station. In this case, the base station may have the same functions as the mobile station.

[0256] A radio frame may be composed of one or more frames in the time domain. In the time domain, one or more frames may be referred to as subframes.

[0257] A subframe may also be composed of one or more time slots in the time domain. A subframe may be a fixed time length (eg, 1 ms) that is independent of numerology.

[0258] A parameter set may be a communication parameter applied to at least one of the transmission and reception of a certain signal or channel. The parameter set may, for example, represent at least one of a 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 a transceiver in the frequency domain, specific windowing processing performed by a transceiver in the time domain, and the like.

[0259] A slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. A slot may be a time unit based on a parameter set.

[0260] A time slot may contain multiple mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in units of time greater than a mini-slot may be referred to as a PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be referred to as a PDSCH (or PUSCH) mapping type B.

[0261] A radio frame, a subframe, a time slot, a mini-time slot, and a symbol all represent time units for transmitting signals. A radio frame, a subframe, a time slot, a mini-time slot, and a symbol may be referred to by other corresponding names.

[0262] For example, 1 subframe can be called a transmission time interval (TTI), multiple consecutive subframes can also be called a TTI, and 1 time slot or 1 mini time slot can also be called a TTI. That is, at least one of the subframe and the TTI can be a subframe (1ms) in the existing LTE, or a period shorter than 1ms (for example, 1-13 code elements), or a period longer than 1ms. In addition, the unit representing TTI can be a time slot, a mini time slot, etc. instead of a subframe.

[0263] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules the allocation of wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) to each user terminal in units of TTI. In addition, the definition of TTI is not limited to this.

[0264] TTI can be a transmission time unit for data packets (transport blocks), code blocks, code words, etc. after channel coding, or a processing unit for scheduling, link adaptation, etc. In addition, when TTI is assigned, the time interval (e.g., the number of symbols) to which the transport block, code block, code word, etc. is actually mapped can be shorter than the TTI.

[0265] In addition, when 1 time slot or 1 mini time slot is called TTI, more than one TTI (ie, more than one time slot or more than one mini time slot) can constitute the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can be controlled.

[0266] A TTI having a time length of 1 ms is also called a normal TTI (TTI in LTE Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may 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, a time slot, etc.

[0267] In addition, for a long TTI (for example, a normal TTI, a subframe, etc.), it can be replaced with a TTI having a time length of more than 1ms, and for a short TTI (for example, a shortened TTI, etc.), it can be replaced with a TTI length less than the long TTI (longTTI) and having a TTI length of more than 1ms. A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it can include one or more continuous 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 according to the parameter set.

[0268] In addition, the time domain of an RB may include one or more symbols, and may also be the length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI. 1 TTI, 1 subframe, etc. may be composed of one or more resource blocks, respectively.

[0269] In addition, one or more RBs may be referred to as a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like.

[0270] In addition, a resource block may be composed of one or more resource elements (REs). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

[0271] Bandwidth Part (BWP) (also called partial bandwidth, etc.) represents a subset of contiguous common RBs (common resource blocks) for a parameter set in a certain carrier. Here, the common RB can be determined by the index of the RB based on the common reference point of the carrier. PRBs are defined in a certain BWP and numbered within the BWP.

[0272] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0273] At least one of the set BWPs may be active, and it is not assumed that the UE transmits or receives a predetermined signal / channel outside the activated BWP. In addition, "cell", "carrier" and the like in the present disclosure may be replaced with "BWP".

[0274] The above structures of radio frames, subframes, time slots, mini-time slots, and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots per 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, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and the like can be changed in various ways.

[0275] The terms "connected", "coupled" or all variations of these terms are intended to indicate any direct or indirect connection or combination between two or more elements, and may include the situation where there is one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be a physical combination or connection, a logical combination or connection, or a combination of these. For example, "access" may be used to replace "connection". In the context of the present disclosure, for two elements, it may be considered that they are "connected" or "coupled" to each other by using at least one of one or more wires, cables, and printed electrical connections, and as some non-limiting and non-inclusive examples, by using electromagnetic energy having wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible) region, etc.

[0276] The reference signal may be referred to as Reference Signal (RS) for short, or may be referred to as a pilot signal depending on the applied standard.

[0277] The phrase "according to" used in the present disclosure does not mean "only according to" unless otherwise expressly stated. In other words, the phrase "according to" means both "only according to" and "at least according to".

[0278] The “unit” in the configuration of each of the above-mentioned devices may be replaced with a “section”, “circuit”, “device” or the like.

[0279] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not necessarily limit the number and order of these elements. These terms are used in this disclosure as a simple method to distinguish between two or more elements. Therefore, a reference to a first and a second element does not mean that only two elements can be used here or that the first element must precede the second element in any form.

[0280] When the terms "include," "including," and variations thereof are used in the present disclosure, these terms are intended to be inclusive, as is the term "comprising." Furthermore, the term "or" used in the present disclosure does not mean an exclusive or.

[0281] In the present disclosure, when an article is added by translation, such as a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0282] The terms "determining" and "determining" used in the present disclosure sometimes also include various actions. "Determining" and "determining" may include, for example, considering matters that have been judged, calculated, calculated, processed, derived, investigated, searched (for example, searched in a table, database or other data structure), confirmed (ascertaining) as matters that have been "judged" or "determined", etc. In addition, "determining" and "determining" may include considering matters that have been received (for example, receiving information), transmitted (for example, transmitting information), input, output, accessed (for example, accessed data in memory) as matters that have been "judged" or "determined", etc. In addition, "determining" and "determining" may include considering matters that have been resolved (resolving), selected (selecting), chosen (choosing), established (establishing), compared (comparing), etc. as matters that have been "judged" or "determined". That is, "determining" and "determining" may include matters that have been "judged" or "determined" by any action. In addition, the word “determine” can also be replaced by “assuming”, “expecting”, “considering”, etc.

[0283] In the present disclosure, the term "A and B are different" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0284] The present disclosure has been described in detail above, but it should be clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as a modification and alteration without departing from the subject matter and scope of the present disclosure as determined by the claims. Therefore, the purpose of the description of the present disclosure is to illustrate and not to have any limiting meaning on the present disclosure.

[0285] Description of symbols

[0286] 10 Wireless Communication Systems

[0287] 20 NG-RAN

[0288] 100 gNB

[0289] 200 UE

[0290] 210 Wireless signal transceiver

[0291] 220 Amplification

[0292] 230 Modem Unit

[0293] 240 Control signal / reference signal processing unit

[0294] 250 Encoding / Decoding Unit

[0295] 260 Data Transceiver

[0296] 270 Control Department

[0297] 1001 Processor

[0298] 1002 Memory

[0299] 1003 Memory

[0300] 1004 Communication device

[0301] 1005 Input Device

[0302] 1006 Output Device

[0303] 1007 Bus

Claims

1. A terminal, wherein: The terminal includes a control unit, which searches for a wireless frequency according to at least one of a channel grid and a synchronization grid. The control unit searches for the wireless frequency in a frequency band that is different from a frequency band including multiple non-continuous frequency ranges, namely, FR1 and FR2 and can apply a subcarrier spacing larger than the subcarrier spacing that can be applied to each of the multiple frequency ranges, based on at least any one of the channel grid and the synchronization grid having a wider spacing than the case of using the frequency band including the FR1 and the FR2.

2. The terminal according to claim 1, wherein: The control unit determines the position of the synchronization grid where the system information is notified based on a numerical value indicating an offset or a range of a synchronization channel number.

3. The terminal according to claim 1, wherein: The control unit determines the position of the synchronization grid where the system information is notified, based on a numerical value indicating an offset or range of a synchronization channel number notified using a synchronization signal block or a part of a reference signal.

4. The terminal according to claim 1, wherein: The frequency band different from the frequency band including the FR1 and the FR2 is a frequency band of 52.6 GHz to 114.25 GHz.

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