Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is provided with: a reception unit that receives a pilot signal in which a sequence is generated on the basis of an identification number of a cell; and a control unit that controls synchronization processing, demodulation processing, and position positioning processing on the basis of at least a part of a sequence of the pilot signal or at least a part of a resource corresponding to the pilot signal.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system. Background Art

[0002] In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized for the purpose of further high-speed data rates, low latency, etc. (Non-Patent Document 1). In addition, for the purpose of further large capacity and high performance of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel. 10-14) has been standardized.

[0003] Research is also underway on a successor system to LTE (for example, also referred to as the 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.).

[0004] Prior Art Documents

[0005] Non-Patent Documents

[0006] Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)", April 2010 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In future wireless communication systems (e.g., wireless communication systems after Rel.17 / 5G, 6G and later), it is also assumed to introduce / support signals with characteristics different from those of existing systems. For example, it is assumed to utilize new signals in specific operations in future wireless communication systems (e.g., at least one of initial connection operation, demodulation operation, and position location operation).

[0009] However, research on the design or characteristics of new signals is not yet sufficient. There is a concern that the quality of communication may deteriorate if new-introduced / supported signals are not properly utilized.

[0010] The present disclosure has been made in view of this, and one of its purposes is to provide a terminal, a wireless communication method, and a base station that can communicate properly even when new signals are introduced / supported.

[0011] Means for Solving the Problem

[0012] A terminal according to one embodiment of the present disclosure includes: a receiving unit that receives a pilot signal whose sequence is generated based on a cell identification number; and a control unit that controls synchronization processing, demodulation processing, and position location processing based on at least a part of the sequence of the pilot signal or at least a part of the resources corresponding to the pilot signal.

[0013] Advantageous Effects of the Invention

[0014] According to one embodiment of the present disclosure, communication can be properly performed even when new signals are introduced / supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A And Figure 1B is a diagram showing an example of single-carrier transmission / multi-carrier transmission.

[0016] Figure 2A And Figure 2B is a diagram showing an example of symbol lengths corresponding to single-carrier transmission / multi-carrier transmission.

[0017] Figure 3A And Figure 3B is a diagram showing an example of signal generation applied to single-carrier transmission.

[0018] Figure 4A And Figure 4B is a diagram showing another example of signal generation applied to single-carrier transmission.

[0019] Figure 5A And Figure 5B is a diagram showing an example of the case where single-carrier transmission is applied to the downlink.

[0020] Figure 6 This is a diagram showing an example of a 5G frequency reuse method.

[0021] Figure 7 This is a diagram showing an example of a frame structure after 6G.

[0022] Figure 8 This is a diagram showing an example of the characteristics of a new signal (e.g., pilot signal) supported in 6G in the first embodiment.

[0023] Figures 9A to 9C This is a diagram showing an example of the mapping pattern of a new signal (e.g., pilot signal) supported in 6G in the first embodiment.

[0024] Figure 10A And Figure 10B This is a diagram showing another example of the mapping pattern of a new signal (e.g., pilot signal) supported in 6G in the first embodiment.

[0025] Figure 11 This is a diagram showing an example of multiple candidates (patterns) of the mapping pattern of a new signal (e.g., pilot signal) supported in 6G in the first embodiment.

[0026] Figure 12 This is a diagram showing another example of the mapping pattern of a new signal (e.g., pilot signal) supported in 6G in the first embodiment.

[0027] Figure 13 This is a diagram showing an example of a signal group for initial access operation supported in 6G in the second embodiment.

[0028] Figure 14 This is a diagram showing another example of a signal group for initial access operation supported in 6G in the second embodiment.

[0029] Figure 15 This is a diagram showing another example of a signal group for initial access operation supported in 6G in the second embodiment.

[0030] Figure 16 This is a diagram showing an example of the schematic structure of a wireless communication system according to an embodiment.

[0031] Figure 17 This is a diagram showing an example of the structure of a base station according to an embodiment.

[0032] Figure 18 This is a diagram showing an example of the structure of a user terminal according to an embodiment.

[0033] Figure 19This is a diagram showing an example of the hardware configurations of a base station and a user terminal according to an embodiment.

[0034] Figure 20 This is a diagram showing an example of a vehicle according to an embodiment. Detailed Embodiment

[0035] (Terahertz (THz) Band)

[0036] In future wireless communication systems (e.g., 6G), it is envisioned to further promote the utilization of high-frequency bands such as terahertz waves. For example, it is considered to provide communication services by constructing the area / coverage of a cell using a large number of thin beams.

[0037] In the terahertz band, a wider bandwidth can be more flexibly utilized compared to sub-6 (e.g., Sub6) and millimeter wave (e.g., millimeterwave: mmW) operating in 5G. In addition, in 6G, due to the influence of ultra-wideband / single-carrier transmission, it is also envisioned that the symbol length becomes extremely short, and the impact on parameter sets (e.g., Numerology) needs to be studied.

[0038] In a high-frequency region such as the terahertz band, the transmitted signal / channel (or beam) has high rectilinearity and it is difficult to flexibly utilize reflected waves. Therefore, it is envisioned that the utilization of high-order MIMO such as multi-stream transmission becomes difficult and the frequency selectivity becomes low. In addition, since it is vulnerable to human body shielding or weather, it is envisioned that ensuring line-of-sight (LOS) becomes important. Here, LOS can also mean that the UE and the base station are in an environment where they can see each other (or there are no obstacles).

[0039] In addition, in the terahertz band, it is also envisioned that the influence of phase noise, etc. becomes stronger and high-order modulation becomes difficult. In addition, there are concerns about performance degradation such as the linearity of amplifiers, and distortion of OFDM, etc. supported in existing systems (e.g., before Rel.17). Therefore, in a high-frequency region such as the terahertz band, it is envisioned to utilize single-carrier transmission.

[0040] (Single-Carrier Transmission)

[0041] Single-carrier transmission is a method of modulation using a single carrier (refer to Figure 1A ). Figure 1A An example of a single-carrier method (e.g., Method 1) is shown. In the single-carrier method (e.g., Method 1), multiple carriers that operate independently of each other can also be utilized.

[0042] On the other hand, a method of modulation using multiple carriers is called multi-carrier transmission (refer toFigure 1B )。 Figure 1B Shows an example of a multi-carrier mode (e.g., mode 2).

[0043] When comparing the single-carrier mode and the multi-carrier mode in the time domain, compared with the multi-carrier mode, the single-carrier mode has a shorter symbol length (refer to Figure 2A 、 Figure 2B ). Figure 2A Shows an example of the symbol length of single-carrier transmission, Figure 2B Shows an example of the symbol length of multi-carrier transmission.

[0044] In the case of assuming operation in the terahertz band, consider the possibility of making more flexible use of a wider bandwidth. In such a case, it is also assumed that the time direction becomes denser (e.g., the symbol length becomes shorter).

[0045] As the signal generation in the case of using the single-carrier mode, one or more processes can also be applied. For example, it is also possible to perform signal generation based on at least one of a generation method that only performs primary modulation (e.g., method 1) or a generation method based on DFT-spread OFDM (DFT-S-OFDM: Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing) (e.g., method 2).

[0046] Figure 3A Shows an example of signal generation using method 1. For example, the data sequence after primary modulation passes through a modulator to generate a transmission sequence.

[0047] Figure 3B Shows an example of signal generation using method 2. After performing DFT processing on the data sequence after primary modulation, it is mapped to subcarriers and inverse fast Fourier transform (IFFT) processing is performed. After that, a cyclic prefix (CP) is added to generate a transmission sequence.

[0048] In addition, the signal generation methods of method 1 / method 2 are just examples, and the signal generation methods in the case of using single-carrier transmission are not limited to this. Some processes can be omitted, other processes can be added, and some processes can also be replaced by other processes. For example, a process of adding CP can also be added to method 1 (refer to Figure 4A ). Or, the process of adding CP can be omitted from method 2 (refer to Figure 4B ).

[0049] On the other hand, in single-carrier transmission, it is difficult to multiplex multiple signals / channels in the frequency direction for a certain UE. For example, in the case of applying single-carrier transmission in DL, the situation where DL channels / DL signals supported in existing systems (e.g., Rel. 15 - 17) cannot be directly utilized is also considered.

[0050] The synchronization blocks (e.g., SS / PBCH blocks) supported in existing systems are composed of PSS / SSS / PBCH (refer to Figure 5A ). Since SSS and a part of PBCH (or DMRS for PBCH) have a multiplexed structure in the frequency domain, it is difficult to utilize the SS / PBCH blocks of existing systems in the case of using single-carrier transmission.

[0051] In the case of providing synchronization signals, etc. using single-carrier transmission in the downlink, a method of configuring in the time direction (e.g., mapping orthogonal sequences in the time direction) is considered (refer to Figure 5B ), rather than frequency multiplexing in the frequency direction. In this way, in the case of using single-carrier transmission, instead of frequency multiplexing multiple channels / signals, a certain time of the carrier is occupied for transmission.

[0052] On the other hand, in existing systems, signal groups that do not transmit data (e.g., synchronization signals (SS), reference signals (RS)) are each mapped to the frequency direction in an optimal form. Figure 6 It is a diagram showing an example of frequency multiplexing in existing systems (e.g., Rel. 15 - 17).

[0053] In 5G, shared channels (e.g., PDSCH / PUSCH) to which a multi-carrier method (e.g., CP-OFDM) is applied and DMRS for the shared channels are frequency multiplexed. As an example, DMRS for PDSCH is discretely inserted into PDSCH in units of resource elements (e.g., RE). In addition, SSS and a part of PBCH (or DMRS for that part of PBCH) are multiplexed in the frequency direction. On the other hand, UL channels and DMRS (e.g., PUSCH and DMRS for PUSCH) to which a single-carrier method (e.g., DFT-spread OFDM) is applied are configured not to be frequency multiplexed.

[0054] Figure 6 The signal groups shown (e.g., signal groups such as synchronization signals and reference signals) have similar properties in that they are orthogonal sequences (or quasi-orthogonal sequences) generated based on certain rules (e.g., both PSS and DMRS are based on Zadoff-Chu sequences), and it is also considered to be redesigned for after 6G in a form that can be used interchangeably.

[0055] However, after 6G, a communication method is also envisioned where the process of camping in a cell is not performed, and synchronization with the cell is reacquired only when there is a need for communication. In addition, it is considered that the terahertz band with limited coverage area is not only envisioned to be provided independently (SA: stand-alone), but also to be provided using dual connectivity with existing systems (e.g., LTE / 4G / 5G).

[0056] In this case, it is also considered that the UE does not always camp on 6G (or, a 6G cell), but only briefly utilizes 6G operations (e.g., initial connection operation / demodulation operation, etc.) when needed. Or, in the case of adopting the LBT method on the premise of sharing the terahertz band with other uses, it is considered to perform operations every time communication is carried out.

[0057] In addition, when considering utilization in URLLC, etc. that require low latency, it is necessary to reduce the initial access latency. However, if the signal group for initial access is continuously transmitted simply in a short cycle, an increase in network overhead becomes a problem. In addition, in 6G, a radio link (e.g., OTA (Over The Air)) latency of less than 1 ms is also envisioned. If waiting for the synchronization signal of the existing system (e.g., the synchronization signal transmitted in a default 20 ms cycle in 5G) to discover the cell, the latency becomes very large.

[0058] Therefore, for the wireless communication method after 6G, it is expected to introduce / support new signals (e.g., signals that can be used for synchronization) with low processing latency and low terminal load. Therefore, the inventors of the present invention focused on the fact that in a mobile NW where multifunctionalization is being promoted, diverse pilot signals (reference signals, synchronization signals, etc.) will still be needed in the future, and came up with performing at least one of synchronization processing, demodulation processing, and position location processing with low latency and low terminal load while minimizing the resources required for the pilot signals.

[0059] Therefore, as an example, the inventors of the present invention studied the synchronization signal / reference signal in the case of envisioning single-carrier transmission, and came up with one mode of the present embodiment (e.g., the first embodiment).

[0060] In addition, after 6G, coexistence with existing systems (e.g., 4G / 5G) is also envisioned. For example, in 6G, it is also envisioned to provide only extremely small cells using the terahertz band, and a provision method similar to non-standalone (NSA) of 5G is also considered.

[0061] In the case of envisioning a scenario where a 4G / 5G cell is synchronized with a 6G cell, it is also envisioned that the functions related to time synchronization in 6G are provided by using the existing synchronization signals (SS) supported in 4G / 5G. In this case, it is also considered that a part of the functions of the synchronization signal in 6G depends on 4G / 5G.

[0062] For example, it is also considered to make the frame number / cell ID, etc. common among multiple communication systems (e.g., 4G / 5G / 6G) to simplify the operation structure on the 6G side, etc. In this case, it is also envisioned that, as 6G, no synchronization signal is specified.

[0063] In this way, in 6G, the base station / terminal may be provided by a hardware implementation different from the existing Radio Access Technology (RAT). For example, a part of the operations such as the correction of the frequency offset of the terminal can also be set specific to 6G.

[0064] However, in the coexistence / synchronization scenario of a cell in an existing system (e.g., 4G / 5G) and a cell after 6G, it becomes a problem what style the design / structure of the signal (e.g., synchronization signal (SS), etc.) used in a specific operation (e.g., initial access operation) in 6G should be. In addition, after 6G, it is also envisioned that initial access is frequently performed. If the possibility of performing cell detection in 6G in addition to 4G / 5G is considered, it is necessary to reduce the detection load during the initial access process.

[0065] In addition, as another example, the inventors of the present invention focused on the coexistence / synchronization scenario of a cell in an existing system (e.g., 4G / 5G) and a cell after 6G, studied the specific operations (e.g., initial access operation, etc.) in the system after 6G, and came up with one mode (e.g., the second mode) of the present embodiment.

[0066] Hereinafter, with reference to the drawings, the embodiments related to the present disclosure will be described in detail. The wireless communication methods related to the respective embodiments can be applied separately or in combination.

[0067] In the present disclosure, “A / B” and “at least one of A and B” can also be rewritten with each other. In addition, in the present disclosure, “A / B / C” can also mean “at least one of A, B, and C”.

[0068] In the present disclosure, notify, activate, deactivate, indicate (or specify), select, configure, update, determine, etc. can also be rewritten with each other. In the present disclosure, support, control, be able to control, operate, be able to operate, etc. can also be rewritten with each other.

[0069] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, Information Elements (IEs), settings, etc. can also be rewritten with each other. In the present disclosure, Medium Access Control control elements (MAC Control Elements (MAC CEs)), update commands, activation / deactivation commands, etc. can also be rewritten with each other.

[0070] In the present disclosure, higher layer signaling can also be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0071] In the present disclosure, MAC signaling can also use, for example, MAC Control Elements (MAC CEs), MAC Protocol Data Units (MAC PDUs), etc. Broadcast information can also be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0072] In the present disclosure, physical layer signaling can also be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), etc.

[0073] In the present disclosure, indexes, identifiers (Identifiers (IDs)), indicators, resource IDs, etc. can also be rewritten with each other. In the present disclosure, sequences, lists, sets, groups, clusters, subsets, etc. can also be rewritten with each other.

[0074] In the present disclosure, a panel, a UE panel, a panel group, a beam, a beam group, a precoder, an uplink (UL) transmission entity, a transmission / reception point (TRP), a base station, spatial relation information (SRI), a spatial relation, an SRS resource indicator (SRI), a control resource set (CORESET), a physical downlink shared channel (PDSCH), a codeword (CW), a transport block (TB), a reference signal (RS), an antenna port (e.g., a demodulation reference signal (DMRS) port), an antenna port group (e.g., a DMRS port group), a group (e.g., a spatial relation group, a code division multiplexing (CDM) group, a reference signal group, a CORESET group, a physical uplink control channel (PUCCH) group, a PUCCH resource group), a resource (e.g., a reference signal resource, an SRS resource), a resource set (e.g., a reference signal resource set), a CORESET pool, a transmission configuration indication state (TCI state) for the downlink (DL TCI state), a TCI state for the uplink (UL TCI state), a unified TCI state, a common TCI state, a quasi-co-location (QCL), a QCL assumption, etc. may also be rewritten with each other.

[0075] In addition, a spatial relation information identifier (ID) (TCI state ID) and spatial relation information (TCI state) may also be rewritten with each other. "Spatial relation information" may also be rewritten with "a set of spatial relation information", "one or more spatial relation information", etc. A TCI state and a TCI may also be rewritten with each other.

[0076] In the present disclosure, discard, abort, cancel, puncture, rate match, postpone, not transmit, etc. can also be rewritten as each other.

[0077] (Wireless communication method)

[0078] The terminal / base station can also use at least one of the following first embodiment and second embodiment to control communication in a wireless communication system after 6G. The first embodiment and the second embodiment can be separately applied (for example, only support / apply one of them), or can be combinedly applied (for example, support / apply both of them).

[0079] In addition, in the first embodiment / second embodiment, a specific 6G frame structure can also be applied.

[0080] As the 6G frame structure, similar to 4G (for example, LTE) or 5G, it can be set to the following structure: The network and the terminal are synchronized in time, and share the time timing related to the symbol / frame structure to operate. When there is an error in the timing maintained by the network and the terminal, the error can also be absorbed / corrected by the CP length or the timing advance (TA), so that the network and the terminal operate synchronously.

[0081] Alternatively, for reducing power consumption or improving utilization efficiency in high frequencies, it can also support that the network and the terminal are not synchronized in time respectively, and the network / terminal operates autonomously.

[0082] In a wireless communication system after 6G, a frame structure considering coexistence with an existing system (for example, 4G / 5G) can also be applied. For example, in a wireless communication system after 6G, based on the frame structure of the existing system, the symbol length can be defined / set to be short (refer to Figure 7 ). In Figure 7 , the following situation is shown: For 1 symbol of the existing system, X symbols of 6G are corresponding (or, in 1 symbol of the existing system, X symbols of 6G are included). X can be defined in the specification, or can be set / indicated from the base station to the terminal through high-layer signaling / DCI.

[0083] In the present embodiment, the existing system is exemplified by 4G / 5G, and the future wireless communication system is exemplified by after 6G for description, but the communication systems to which the present embodiment can be applied are not limited to these. It can also be applied to other communication systems. In addition, the existing system (4G / 5G) can also be rewritten as the first wireless communication system or the first RAT. The future wireless communication system (6G) can also be rewritten as the second wireless communication system or the second RAT.

[0084] In addition, in the following description, the case where single-carrier transmission is supported / applied in the downlink is taken as an example for illustration, but the cases where the present embodiment can be applied are not limited thereto. It can be applied to the case where single-carrier transmission is supported / applied in the uplink, or to other cases.

[0085] <First Embodiment>

[0086] The first embodiment describes an example of a new signal supported / introduced in a future wireless communication system (e.g., after 6G).

[0087] This new signal can also be referred to as a pilot signal (PS), a 6G pilot signal, or a new signal group, a signal group for 6G, a synchronization / reference signal (SS / RS), or a 6G synchronization / reference signal, etc.

[0088] The new signal (hereinafter, also referred to as the pilot signal) can also be a signal that is generated based on a specific rule and has different sequences generated according to the identification number of the cell (e.g., cell ID). The specific rule can also be a specific sequence (e.g., Zadoff-Chu sequence / M sequence, etc.) for example.

[0089] In the case where single-carrier transmission is supported at least in the downlink, the terminal can also receive the pilot signal whose sequence is generated based on the cell ID.

[0090] The pilot signal can also be a signal that does not notify information through an explicit method. In addition, like the cell ID notification performed by the synchronization signal, by prescribing one or more candidates in advance and the terminal performing blind detection on the candidates, information can be implicitly obtained from the pilot signal.

[0091] The pilot signal can also have multiple features. Or, the pilot signal can also combinatorially have the features of multiple signals in the existing system.

[0092] As an example, the pilot signal can also have at least one of the following Feature #1 (at least one of Feature #1-1 to #1-6), Feature #2 (Feature #2-1 to #2-3), Feature #3 (Feature #3-1 to #3-3), and Feature #4 (Feature #4-1 to #4-2), or a combination of two or more.

[0093] Feature #1 to #4 can also be the features possessed by specific signals in the existing system (refer to Figure 8)。For example, Feature #1 can also be a feature of the synchronization signal (SS). In addition, Feature #2 can also be a feature of the resynchronization signal (RSS). In addition, Feature #3 can also be a feature of the demodulation reference signal (DMRS). Feature #4 can also be a feature of the positioning reference signal (Positioning RS). Of course, the signals corresponding to each feature are not limited to this.

[0094] [Feature #1]

[0095] · Feature #1-1: The terminal assumes an arbitrary transmission period, or alternatively an arbitrary period is set for the UE;

[0096] · Feature #1-2: Associated with an arbitrary ID (e.g., the ID of the beam), and is applied for repeated transmission;

[0097] · Feature #1-3: Generated based on time positions such as symbol timing / system frame number (SFN) and information capable of determining the cell ID;

[0098] · Feature #1-4: Assume phased terminal processing and notify the cell ID with multiple signals;

[0099] · Feature #1-5: Not a signal dedicated to the terminal;

[0100] · Feature #1-6: The time / frequency position assumed by the terminal at the initial moment is fixed.

[0101] Feature #1 (e.g., at least one of Feature #1-1 to #1-6) can also be a feature of the synchronization signal (SS) used for determining the cell ID and determining the time / frequency position in the initial access process.

[0102] [Feature #2]

[0103] · Feature #2-1: Set as needed through MIB / SIB, etc.;

[0104] · Feature #2-2: The offset of the transmission period / start time and the duration of transmission are set;

[0105] · Feature #2-3: The offset of the transmission power is set.

[0106] Feature #2 (e.g., at least one of Feature #2-1 to #2-3) can also be a feature of the additional synchronization signal (RSS) used for the terminal to supplement the synchronization signal in advance.

[0107] [Feature #3]

[0108] · Feature #3-1: A signal dedicated to the terminal;

[0109] · Feature #3-2: The density of the position / configuration in time is adjustable;

[0110] · Feature #3-3: Transmitted together with the transmission of the associated data (non-leaving signal).

[0111] Feature #3 (e.g., at least one of Features #3-1 to #3-3) can also be a feature of the demodulation reference signal (DMRS) associated with PBCH / PDSCH, etc. and used for channel estimation before data demodulation.

[0112] [Feature #4]

[0113] · Feature #4-1: Not a signal dedicated to the terminal;

[0114] · Feature #4-2: The density of the position / configuration in time, etc. is adjustable.

[0115] Feature #4 (e.g., at least one of Features #4-1 to #4-2) can also be a feature of the positioning reference signal (e.g., Positioning RS) used to provide high-precision position location via 5G.

[0116] The terminal can also control a specific operation / specific process (e.g., at least one of synchronization processing, demodulation processing, and position location processing) based on at least a part of the sequence of pilot signals or at least a part of the resources corresponding to the pilot signals.

[0117] The pilot signal (or the sequence of pilot signals) can also be applied to at least one of the following Options 1-1 to 1-4.

[0118] [Option 1-1]

[0119] All resources in the sequence of pilot signals (PS sequence) may also have features of all or a partial combination of Feature #1 (e.g., at least one of Features #1-1 to #1-6) / Feature #2 (e.g., at least one of Features #2-1 to #2-3) / Feature #3 (e.g., at least one of Features #3-1 to #3-3) / Feature #4 (e.g., at least one of Features #4-1 to #4-2). Alternatively, a part of the resources in the sequence of pilot signals (PS sequence) may also have features of all or a partial combination of Feature #1 (e.g., at least one of Features #1-1 to #1-6) / Feature #2 (e.g., at least one of Features #2-1 to #2-3) / Feature #3 (e.g., at least one of Features #3-1 to #3-3) / Feature #4 (e.g., at least one of Features #4-1 to #4-2).

[0120] Features #1 to #4 may also have different sequence generation methods / amount of resources to which they are mapped / period / start offset / transmission power.

[0121] 《Mode 1-1-1》

[0122] For example, all of the sequence of pilot signals may also be used as a synchronization signal and as a specific reference signal (RS). That is, the synchronization signal and the reference signal may also have common features. In this case, the pilot signal used as the synchronization signal and the pilot signal used as the reference signal may also be derived by the same mechanism (e.g., the same mathematical formula).

[0123] The pilot signal may also be equally mapped to the time domain at an arbitrary period (refer to Figure 9A ). Figure 9A An example in the case of a mode in which the pilot signal is equally time-mapped at an arbitrary period is shown. This pilot signal may also be used as a synchronization signal / a specific reference signal. The transmission conditions such as the period of the pilot signal may be defined in the specification or set for the terminal through a higher layer parameter.

[0124] Alternatively, the pilot signal may also be repeatedly transmitted for each beam (refer to Figure 9B ). For example, pilot signals applied with different beams (or pilot signals with different indices) may also be equally mapped to the time domain at an arbitrary period. The number of beams (or the index of the pilot signal) may be predefined in the specification or notified from the base station to the terminal.

[0125] Alternatively, it may be unevenly mapped to the time domain at an arbitrary period (refer to Figure 9C ). Figure 9CAn example in the case of a mode where pilot signals are unevenly time-mapped at an arbitrary period is shown. For example, it may also be that the pilot signal mapped to a certain time domain (e.g., the first duration) is applied as a synchronization signal, and the pilot signal mapped to another time domain (e.g., the second duration) is applied as a reference signal.

[0126] 《Method 1-1-2》

[0127] It may also be that the entire sequence of pilot signals is applied as DMRS, and a part is applied as a synchronization signal (SS).

[0128] In this case, the transmission conditions of the pilot signal used as a synchronization signal and the transmission conditions of the pilot signal used as a reference signal (non-synchronization signal) can also be separately set (or set differently).

[0129] For example, repeated transmission can be applied only to the synchronization signal (SS) (or only the pilot signal used as a synchronization signal) (refer to Figure 10A ). That is, only a part of the time domain / frequency domain of the pilot signal can be used as a synchronization signal, and only this part of the region has different conditions / characteristics from other regions (or resources). Different conditions / characteristics can be, for example, at least one of repeated transmission, resource amount, and transmission power, etc. In Figure 10A , an example of applying repeated transmission to each beam only when used as a synchronization signal is shown.

[0130] Or, only DMRS (or only the pilot signal used as DMRS) can be transmitted from multiple antenna ports (refer to Figure 10B ). For example, it may also be that when the pilot signal is applied as a synchronization signal, it is transmitted from the first antenna port, and when the pilot signal is transmitted as DMRS, it is transmitted from the first antenna port and the second antenna port.

[0131] In addition, the number of antenna ports and the antenna port numbers are not limited to this. The number of antenna ports / antenna port numbers applied to the synchronization signal and the number of antenna ports / antenna port numbers applied to DMRS can be defined in the specification or set in the higher layer parameters respectively.

[0132] At least one of the transmission conditions (e.g., transmission period / resource allocation / mapping mode, etc.) of the pilot signal used as a synchronization signal and the transmission conditions (e.g., transmission period / resource allocation / mapping mode, etc.) of the pilot signal used as DMRS can be defined in the specification or set / indicated to the terminal from the base station through higher layer signaling / DCI.

[0133] In addition, a pilot signal used as a synchronization signal and a pilot signal used as a reference signal (e.g., DMRS) can also be derived by different mechanisms (e.g., different mathematical expressions). Different mathematical expressions can also mean that some of the parameters included in the mathematical expression are different.

[0134] [Option 1-2]

[0135] Regarding the sequence of pilot signals (e.g., 6G RS sequence), multiple patterns of the time positions of the configured resources can also be defined / stipulated, and at least one of the multiple patterns (or candidates for patterns) is set / indicated to the terminal.

[0136] Figure 11 An example of multiple mapping patterns of pilot signals is shown. In Pattern 1, an example of a pilot signal to which the same mapping pattern is applied across a specific period is shown. That is, each pilot signal has the same time domain (e.g., duration).

[0137] In Pattern 2, a case where a first time domain (e.g., a first duration) and a second time domain (e.g., a second duration) are applied to the pilot signal is shown. Which of Pattern 1 and Pattern 2 is applied can also be indicated / set to the terminal from the base station by higher-layer signaling / DCI. Alternatively, based on the terminal capabilities, the terminal can autonomously determine the applied pattern.

[0138] Figure 11 Two patterns are shown, but it is not limited to this. For example, different patterns can also be set for the transmission period of the pilot signal. The number of patterns and the mapping patterns in the time domain / frequency domain of each pattern are not limited to this. The candidates for patterns can be defined in the specification or set to the terminal from the base station by higher-layer signaling, etc.

[0139] In addition, multiple patterns can also be set for the terminal. The terminal can also control the reception of pilot signals corresponding to each pattern based on the multiple set patterns.

[0140] [Option 1-3]

[0141] The sequence of pilot signals (e.g., 6G RS sequence) can also be determined whether it has any one of the above characteristics #1 to #4 according to the combination of the time position, the position in time, and the frequency position to which it is mapped, or the pattern for determining the time position.

[0142] For example, a pilot signal configured in a specific frequency domain (e.g., the central region of a BWP / CC / communication band) may also have Feature #1 / Feature #2. A pilot signal configured in the same symbol / slot / frequency domain or an adjacent symbol / slot / frequency domain as a specific channel (e.g., PDSCH / PUSCH) may also be used as Feature #3. Alternatively, a pilot signal having a specific pattern transmitted at a certain period may also have Feature #1 / Feature #2 / Feature #4.

[0143] [Option 1-4]

[0144] The pilot signal may also be assumed to have a default setting by the terminal. The default setting may also be at least one of Option 1-1 to Option 1-3, or at least one of Feature #1 to Feature #4. Alternatively, for additional settings for the pilot signal, they may be notified to the terminal individually.

[0145] The base station may also set multiple pilot signals with different settings (or, transmission conditions) to the terminal. The setting (or, setting information) of the pilot signal may be set on a per-cell / BWP basis. Alternatively, the setting (or, setting information) of the pilot signal may be set on a per-terminal basis.

[0146] For example, a periodic pilot signal setting and an additional pilot signal setting may also be performed (refer to Figure 12 ). In Figure 12 , an example is shown in the case where a pilot signal (candidate position #1) set for periodic transmission and an additional pilot signal (candidate position #2) are set. Candidate position #1 and candidate position #2 may be configured not to overlap, or may be configured to overlap as shown in Figure 12 .

[0147] Thus, with the additional pilot signal, an additional pilot signal can be configured in a certain time domain / frequency domain. Thus, even in a case where a certain density is required as in a positioning reference signal (e.g., PRS, etc.), by setting an additional pilot signal for insufficient resources, a complex pilot signal setting can be performed.

[0148] In addition, in the case where the positions of multiple pilot signals (e.g., candidate position #1 and candidate position #2) overlap, an AND / OR operation of the two pilot signals may also be performed to determine the configuration. Alternatively, it may be assumed to discard / cancel the setting of one of the pilot signals, etc.

[0149] [Variation]

[0150] Options 1-1 to 1-4 are described by taking single-carrier transmission of DL as an example, but the applicable communication systems are not limited thereto. For example, it can also be applied to UL (e.g., single-carrier transmission). Alternatively, it can also be applied to multi-carrier transmission.

[0151] <Second Embodiment>

[0152] The second embodiment describes an example of an initial access operation in a future wireless communication system (e.g., after 6G). The second embodiment can be applied either independently of the first embodiment or in combination with the first embodiment.

[0153] In the following description, an example is given where a cell of an existing system (e.g., 4G / 5G) coexists with a 6G cell and is time-synchronized, but the applicable scenarios of this embodiment are not limited thereto.

[0154] When a 6G cell coexists with a cell of an existing system and is time-synchronized, the initial access operation of 6G can also be defined in association with the synchronization signal / broadcast channel (e.g., SS / PBCH) of 4G / 5G. The synchronization signal / broadcast channel (e.g., SS / PBCH) can also be rewritten as a synchronization signal block (e.g., SS / PBCH block).

[0155] For example, the synchronization signal of 6G can also have at least one of the following functions #2-1 to #2-6 provided by the synchronization signal (SS) / broadcast channel (PBCH) of 4G / 5G. That is, for the following functions #2-1 to #2-6 provided by the SS / PBCH of 4G / 5G, on the premise that a part of them is provided by the SS / PBCH of 4G / 5G, any processing / notification of 6G can be omitted / abandoned, rather than implementing all of them in the SS / PBCH of 6G as well.

[0156] · Function #2-1: Time synchronization (e.g., detection of symbol boundary / determination of SFN).

[0157] · Function #2-2: Frequency synchronization (e.g., detection of subcarrier position).

[0158] · Function #2-3: Correction of frequency offset.

[0159] · Function #2-4: Determination of cell ID.

[0160] · Function #2-5: Notification of system information.

[0161] · Function #2-6: Cell positioning.

[0162] For example, for the information of a specific 6G cell, the terminal can also assume that the information is notified on the 4G / 5G side, or assume that the specific information is defined in an associated manner between 6G and 4G / 5G without notification.

[0163] The terminal can also use at least one of the following Options 2-1 to 2-3 to control the initial access operation in a wireless communication system after 6G.

[0164] [Option 2-1]

[0165] The SS / PBCH of 4G / 5G can also be defined in an associated manner with the SS / PBCH of 6G. Alternatively, the information explicitly or implicitly notified by the SS / PBCH of 4G / 5G and the information explicitly or implicitly notified by the SS / PBCH of 6G can be defined in an associated manner. Thus, in the initial access operation of 6G, the operations related to at least one of Functions #2-1 to #2-6 (for example, a part of the operations related to detection / estimation) can also be omitted.

[0166] [Method 2-1-1]

[0167] For the system information corresponding to 6G, the existing system (for example, 4G / 5G) can also be used to notify the terminal. In this case, on the 6G cell side, on the premise of notifying the system information on the 5G side, the structure of the channel equivalent to the physical broadcast channel (PBCH) can also be set not to be prepared / supported.

[0168] In this case, when the terminal performs an access operation for 6G (for example, an initial access operation), it can also be controlled based on the information (for example, an SS / PBCH block) notified from other cells (for example, a 4G / 5G cell). Thus, the reception process during the initial access operation for 6G can be simplified, and the broadcast channel corresponding to 6G can be omitted.

[0169] [Method 2-1-2]

[0170] The synchronization signal (SS) corresponding to 6G can also be set to support the structure of a one-stage SS. In this case, the 6G synchronization signal is, for example, assumed to be specialized in a specific function (for example, detection of symbol boundaries, etc.), and for the synchronization signals (types of PSS and SSS) provided in two stages on the 4G / 5G side, a one-stage synchronization signal (one type of SS) can also be provided on the 6G side (refer to Figure 13 ).

[0171] Figure 13It shows the following situation: In a 5G system, an initial access operation is performed using a synchronization signal block including 2 synchronization signals (e.g., PSS and SSS) and PBCH. In a 6G system, an initial access operation is performed using one synchronization signal (SS) and PBCH. Additionally, in the initial access operation of the 6G system, it is also possible to use only one synchronization signal (SS) and omit the reception of the broadcast channel (PBCH). In this case, for example, Mode 2-1-1 can also be used.

[0172] 《Mode 2-1-3》

[0173] The cell ID of 6G can also be derived based on the cell ID of 4G / 5G. For example, the cell ID of 6G can be the same as the cell ID of 4G / 5G, or it can be an ID derived by applying specific information (e.g., an offset) to the cell ID of 4G / 5G. For example, the terminal can also assume that the cell ID of 6G is the same as the cell ID of 4G / 5G and omit the cell ID detection operation in the 6G synchronization signal.

[0174] Alternatively, on the premise that the cell ID of 6G is defined in association with the cell ID of 4G / 5G, a part of the cell ID of 6G can be associated with the 4G / 5G synchronization signal, and the remaining cell ID of 6G can be associated with the 6G synchronization signal. The terminal can also perform the initial access process (e.g., judgment of the cell ID) in the 6G cell based on the 4G / 5G synchronization signal and the 6G synchronization signal.

[0175] [Option 2-2]

[0176] It is also possible to configure the 4G / 5G SS / PBCH and the 6G SS / PBCH at the same time / frequency position. Or, it can be configured to have a structure where the 4G / 5G SS / PBCH and the 6G SS / PBCH are configured at associated time / frequency positions.

[0177] The terminal can also assume that the 6G SS / PBCH is configured at the same time / frequency position as the 4G / 5G SS / PBCH, or is configured at an associated time / frequency position with the 4G / 5G SS / PBCH.

[0178] In this case, at least one of the operations related to the determination of the time position such as SFN, the operation related to the determination of the cell ID, and the operation related to the determination of the beam ID on the 6G cell side can be omitted / simplified. Or, other operations on the 6G cell side (e.g., operations related to the determination of the frequency position) can be omitted / simplified.

[0179] 《Mode 2-2-1》

[0180] The cell ID of the 5G synchronization signal (SS) and the cell ID of the 6G synchronization signal (SS) transmitted at the same time position may also be the same. Alternatively, in the case where the 5G synchronization signal (SS) and the 6G synchronization signal (SS) are transmitted at the same time position, the 6G cell ID may also be determined based on the cell ID corresponding to the 5G synchronization signal.

[0181] The terminal may also assume that in the case where the 5G SS and the 6G SS are transmitted at the same time position (or overlap in the time domain), the cell ID corresponding to the 5G SS is the same as the cell ID corresponding to the 6G SS. Alternatively, in the case where the 5G SS and the 6G SS are transmitted at the same time position (or overlap in the time domain), the terminal may also determine the 6G cell ID based on the cell ID of the 5G SS.

[0182] In this case, the start timing of the 5G SS and the start timing of the 6G SS may also be the same (refer to Figure 14 ). Figure 14 The following situation is shown: For the first SSB (e.g., SSB#0) and the second SSB (e.g., SSB#1) of 5G, the signal groups corresponding to the 6G SSB are respectively mapped to the same start timing (e.g., the same start symbol). For example, an OFDM symbol corresponding to 5G may also contain X symbols corresponding to 6G. In the signal group corresponding to the 6G SSB, part or all of the cell ID notification may also be omitted.

[0183] Alternatively, the start timing of the 5G SS and the start timing of the 6G SS may also be set at an interval corresponding to a specific offset. The specific offset may either be defined in the specification or be separately notified from the base station to the terminal.

[0184] "Method 2-2-2"

[0185] The cell ID of the 5G synchronization signal (SS) and the beam number of the 6G synchronization signal (SS) transmitted at the same time position may also be the same. Alternatively, in the case where the 5G synchronization signal (SS) and the 6G synchronization signal (SS) are transmitted at the same time position, the beam number (or reference signal index) corresponding to the 6G synchronization signal may also be determined based on the beam number (or reference signal index) corresponding to the 5G synchronization signal.

[0186] In the case where the 5G SS and the 6G SS are transmitted at the same time position (or overlap in the time domain), the terminal can also assume that the beam numbers corresponding to the 5G SS and the 6G SS are the same. Alternatively, in the case where the 5G SS and the 6G SS are transmitted at the same time position (or overlap in the time domain), the terminal can also determine the beam number of the 6G SS based on the beam number of the 5G SS.

[0187] In this case, the start timing of the 5G SS and the start timing of the 6G SS can also be the same (refer to Figure 15 ). Figure 15 The following situation is shown: for the first SSB (e.g., SSB#0) and the second SSB (e.g., SSB#1) of 5G, the signal groups corresponding to the 6G SSB are respectively mapped to the same start timing (e.g., the same start symbol). For example, an OFDM symbol corresponding to 5G may also contain X symbols corresponding to 6G. In the signal group corresponding to the 6G SSB, the notification of part or all of the beam ID may also be omitted.

[0188] Alternatively, the start timing of the 5G SS and the start timing of the 6G SS can also be set at an interval corresponding to a specific offset. The specific offset can either be defined in the specification or be additionally notified from the base station to the terminal.

[0189] Mode 2-2-2 can also be combined with Mode 2-2-1 for application.

[0190] [Option 2-3]

[0191] It can also be that an additional notification bit is set on the cell side of the existing 4G / 5G system, and this notification bit is used to notify the terminal of at least one of the presence / absence of 6G, the cell prohibition flag, the use of any channel such as the synchronization signal (SS), and the procedure pattern of the program.

[0192] <Supplement>

[0193] [Notification of Information to UE]

[0194] The notification of any information in the above embodiments from the network (Network (NW)) (e.g., the base station (BaseStation (BS))) to the UE (in other words, the reception of any information from the BS in the UE) can also be performed using physical layer signaling (e.g., DCI), high layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signals), or a combination thereof.

[0195] In the case where the above notification is carried out by means of a MAC CE, the MAC CE can also be identified by being included in a MAC subheader with a new logical channel ID (LCID) not specified in the existing standards.

[0196] In the case where the above notification is carried out by means of DCI, the above notification can also be carried out by means of a specific field of the DCI, a radio network temporary identifier (RNTI) used in the scrambling of cyclic redundancy check (CRC) bits assigned to the DCI, the format of the DCI, etc.

[0197] In addition, the notification of any information in the above embodiments to the UE can also be carried out periodically, semi - persistently or aperiodically.

[0198] [Notification of Information from UE]

[0199] The notification of any information from the UE (to the NW) in the above embodiments (in other words, the transmission / reporting of any information in the UE to the BS) can also be carried out using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals) or a combination thereof.

[0200] In the case where the above notification is carried out by means of a MAC CE, the MAC CE can also be identified by being included in a MAC subheader with a new LCID not specified in the existing standards.

[0201] In the case where the above notification is carried out by means of UCI, the above notification can also be sent using PUCCH or PUSCH.

[0202] In addition, the notification of any information from the UE in the above embodiments can also be carried out periodically, semi - persistently or aperiodically.

[0203] [Application of Each Embodiment]

[0204] At least one of the above embodiments can also be applied to cases that meet specific conditions. The specific conditions can either be specified in the standards or be notified to the UE / BS using higher layer signaling / physical layer signaling.

[0205] At least one of the above-described embodiments may also be applied only to a UE that has reported a specific UE capability or supports the specific UE capability.

[0206] The specific UE capability may also represent at least one of the following:

[0207] · Support for specific processing / operations / control / information regarding at least one of the above-described embodiments;

[0208] · Support for single-carrier transmission in the downlink;

[0209] · Support for pilot signals (e.g., pilot signals for 6G systems);

[0210] · Support for connection to both 4G / 5G (e.g., prior to Rel.17) and 6G (e.g., dual connectivity);

[0211] · Support for symbol lengths for 6G.

[0212] In addition, the above specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or a capability for each frequency (e.g., one or a combination of a cell, a band, a band combination, a BWP, a component carrier, etc.), or a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or a capability for each SubCarrierSpacing (SCS), or a capability for each Feature Set (FS) or each Feature Set Per Component-carrier (FSPC) of each component carrier.

[0213] In addition, the above specific UE capability may be a capability that is applied across all duplex modes (commonly regardless of the duplex mode), or a capability for each duplex mode (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0214] In addition, at least one of the above-described embodiments can also be applied to the following situation: The UE is set / activated / triggered by high-layer signaling / physical-layer signaling with specific information associated with the above-described embodiments (or performs the operations of the above-described embodiments). For example, the specific information can also be information indicating the activation of a specific operation based on a pilot signal, any RRC parameter for a specific RAT (e.g., 6G) / version (e.g., Rel.18 / 19 / 20), etc.

[0215] In the case where at least one of the above specific UE capabilities is not supported or the above specific information is not set, the UE can also apply the operations of Rel.15 / 16, for example.

[0216] (Supplementary Note)

[0217] Regarding an embodiment of the present disclosure, the following inventions are noted.

[0218] [Supplementary Note 1-1]

[0219] A terminal, comprising: a receiving unit that receives a pilot signal whose sequence is generated based on a cell identification number; and a control unit that controls synchronization processing, demodulation processing, and position location processing based on at least a part of the sequence of the pilot signal or at least a part of the resource corresponding to the pilot signal.

[0220] [Supplementary Note 1-2]

[0221] The terminal according to Supplementary Note 1-1, wherein the entire sequence of the pilot signal is used as a demodulation reference signal, and the entire or a part of the sequence of the pilot signal is used as a synchronization signal.

[0222] [Supplementary Note 1-3]

[0223] The terminal according to Supplementary Note 1-1 or Supplementary Note 1-2, wherein a plurality of candidates for the time position where the resource corresponding to the pilot signal is configured are defined or set.

[0224] [Supplementary Note 1-4]

[0225] The terminal according to any one of Supplementary Notes 1-1 to 1-3, wherein the control unit performs at least one of the synchronization processing, the demodulation processing, and the position location processing based on at least one of the time position and the frequency position where the sequence of the pilot signal is mapped.

[0226] [Supplementary Note 2-1]

[0227] A terminal, comprising: a receiving unit that receives a Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block including a first synchronization signal, a second synchronization signal, and a physical broadcast channel in a first wireless communication system, and receives a signal group for the second wireless communication system in the second wireless communication system; and a control unit that controls at least one of synchronization processing, frequency offset correction, cell ID determination, system information acquisition, and cell positioning in the second wireless communication system based on both the SS / PBCH block and the signal group.

[0228] [Appendix 2-2]

[0229] The terminal according to Appendix 2-1, wherein the signal group does not include at least one of the first synchronization signal, the second synchronization signal, and the physical broadcast channel.

[0230] [Appendix 2-3]

[0231] The terminal according to Appendix 2-1 or Appendix 2-2, wherein the control unit determines at least one of a cell ID, a beam ID, and a frame number corresponding to the second wireless communication system based on a relationship between a time position of the SS / PBCH block and the signal group.

[0232] [Appendix 2-4]

[0233] The terminal according to any one of Appendices 2-1 to 2-3, wherein, for one symbol supported in the first wireless communication system, in a case where a plurality of symbols supported in the second wireless communication system are included, a plurality of SS / PBCH blocks and a plurality of signal groups are mapped to overlap with each other in the time domain.

[0234] (Wireless communication system)

[0235] Hereinafter, the structure of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, any one or a combination of the wireless communication methods according to the above-described embodiments of the present disclosure is used for communication.

[0236] Figure 16This is a diagram showing an example of the schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 (which may also be abbreviated as system 1) may also be a system that realizes communication by using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the 5th generation mobile communication system New Radio (5G NR), and the like.

[0237] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple Radio Access Technologies (RATs). MR-DC may also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0238] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the Secondary Node (SN). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0239] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both the MN and the SN are base stations (gNBs) of NR (NR-NR Dual Connectivity (NN-DC))).

[0240] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage area, and a base station 12 (12a - 12c) that is disposed within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located within at least one cell. The configuration, number, etc. of each cell and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between the base stations 11 and 12, they are collectively referred to as the base station 10.

[0241] The user terminal 20 may also be connected to at least one of the multiple base stations 10. The user terminal 20 may also utilize at least one of carrier aggregation (CA) and dual connectivity (DC) that uses multiple component carriers (CCs).

[0242] Each CC may also be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub - 6 GHz), and FR2 may be a frequency band higher than 24 GHz (above - 24 GHz). Additionally, the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these. For example, FR1 may correspond to a frequency band higher than FR2.

[0243] Furthermore, the user terminal 20 may also communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0244] The multiple base stations 10 may also be connected by wire (e.g., optical fiber based on the Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is utilized as a backhaul between the base stations 11 and 12, the base station 11 that is equivalent to the upper - level station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 that is equivalent to a relay station (relay) may also be referred to as an IAB node.

[0245] Base station 10 can also be connected to the core network 30 via other base stations 10 or directly. The core network 30 can also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), etc.

[0246] The core network 30 can also include, for example, network functions (NFs) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and an Operation, Administration and Maintenance (OAM). Additionally, multiple functions can be provided by one network node. Furthermore, communication with an external network (such as the Internet) can be performed via the DN.

[0247] User terminal 20 can also be a terminal that supports at least one of communication methods such as LTE, LTE-A, 5G, etc.

[0248] In the wireless communication system 1, a wireless access method based on Orthogonal Frequency Division Multiplexing (OFDM) can also be utilized. For example, in at least one of the Downlink (DL) and the Uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. can also be used.

[0249] The wireless access method can also be referred to as a waveform. Additionally, in the wireless communication system 1, in the wireless access methods of the UL and the DL, other wireless access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) can also be used.

[0250] As a downlink channel, in the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc., which are shared among the user terminals 20, can also be used.

[0251] Furthermore, as an uplink channel, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc., which are shared among the user terminals 20, can also be used.

[0252] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through the PDSCH. User data, high-layer control information, etc. can also be transmitted through the PUSCH. In addition, the Master Information Block (MIB) can also be transmitted through the PBCH.

[0253] Low-layer control information can also be transmitted through the PDCCH. The low-layer control information can also include, for example, downlink control information (Downlink Control Information (DCI)), and the downlink control information includes scheduling information of at least one of the PDSCH and the PUSCH.

[0254] In addition, the DCI for scheduling the PDSCH can also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH can also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH can also be rewritten as DL data, and the PUSCH can also be rewritten as UL data.

[0255] In the detection of the PDCCH, the Control Resource Set (CORESET) and the search space can also be used. The CORESET corresponds to the resource for searching for DCI. The search space corresponds to the search area and search method of PDCCH candidates. One CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a certain search space based on the search space setting.

[0256] One search space can also correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces can also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. in the present disclosure can also be rewritten with each other.

[0257] Through the PUCCH, it is also possible to transmit uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), delivery confirmation information (which can also be referred to as Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)). Through the PRACH, it is also possible to transmit a random access preamble for establishing a connection with a cell.

[0258] In addition, in the present disclosure, the downlink, uplink, etc. can also be expressed without the word "link". Furthermore, it can also be expressed without the word "Physical" at the beginning of various channels.

[0259] In the wireless communication system 1, it is also possible to transmit a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. As the DL-RS, in the wireless communication system 1, it is also possible to transmit a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc.

[0260] The synchronization signal can, for example, also be at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) can also be referred to as an SS / PBCH block, an SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. can also be referred to as reference signals.

[0261] In addition, in the wireless communication system 1, as the uplink reference signal (Uplink Reference Signal (UL-RS)), it is also possible to transmit a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. In addition, DMRS can also be referred to as a user terminal specific reference signal (UE-specific Reference Signal).

[0262] (Base station)

[0263] Figure 17 FIG. is an example showing the structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission path interface (transmission line interface) 140. In addition, one or more of the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140 may be provided respectively.

[0264] In addition, in this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it can be assumed that the base station 10 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0265] The control unit 110 implements overall control of the base station 10. The control unit 110 can be composed of a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0266] The control unit 110 can also control the generation, scheduling (e.g., resource allocation, mapping), etc. of signals. The control unit 110 can also control transmission / reception, measurement, etc. using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140. The control unit 110 can also generate data, control information, a sequence, etc. to be transmitted as signals, and forward them to the transmission / reception unit 120. The control unit 110 can also perform call processing (setting, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0267] The transmission and reception unit 120 may also include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmission and reception unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transmission and reception circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0268] The transmission and reception unit 120 may be configured as an integrated transmission and reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may also be composed of a transmission processing unit 1211 and an RF unit 122. The reception unit may also be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0269] The transmission and reception antenna 130 can be composed of an antenna, such as an array antenna, etc., which is described based on the common knowledge in the technical field related to the present disclosure.

[0270] The transmission and reception unit 120 may also transmit the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission and reception unit 120 may also receive the above-mentioned uplink channels, uplink reference signals, etc.

[0271] The transmission and reception unit 120 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmission beam and a reception beam.

[0272] The transmission and reception unit 120 (transmission processing unit 1211) may also perform processing of the Packet Data Convergence Protocol (PDCP) layer, processing of the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing of the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc. on, for example, data and control information obtained from the control unit 110, and generate a bit string to be transmitted.

[0273] The transmission / reception unit 120 (transmission processing unit 1211) can also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing (filtering), Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

[0274] The transmission / reception unit 120 (RF unit 122) can also perform modulation to the radio frequency band, filter processing (filtering), amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 130.

[0275] On the other hand, the transmission / reception unit 120 (RF unit 122) can also perform amplification, filter processing (filtering), demodulation to the baseband signal, etc. on the radio frequency band signal received through the transmission / reception antenna 130.

[0276] The transmission / reception unit 120 (reception processing unit 1212) can also perform reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filter processing (filtering), demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. on the obtained baseband signal, and obtain user data, etc.

[0277] The transmission / reception unit 120 (measurement unit 123) may also perform measurements related to the received signal. For example, the measurement unit 123 may also perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may also perform measurements on received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0278] The transmission path interface 140 may also transmit and receive signals (backhaul signaling) between the device included in the core network 30 (e.g., the network node providing the NF), other base stations 10, etc., and obtain and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0279] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0280] The transmission / reception unit 120 may also transmit a pilot signal whose sequence is generated based on the cell identification number to the terminal. The control unit 110 may also control whether the pilot signal is used for any of the synchronization process, the demodulation process, and the position location process in the terminal through at least a part of the sequence of the pilot signal or at least a part of the resource corresponding to the pilot signal.

[0281] The transmission / reception unit 120 may also transmit, in a second wireless communication system, a signal group for the second wireless communication system to a terminal connected to a first wireless communication system in which a synchronization signal / physical broadcast channel (SS / PBCH) block including a first synchronization signal, a second synchronization signal, and a physical broadcast channel is transmitted. The control unit 110 may also perform control so that the signal group is transmitted in a resource associated with a resource corresponding to a specific SS / PBCH block. The signal group may also include one type or multiple types of signals (for example, at least a synchronization signal).

[0282] (User terminal)

[0283] Figure 18 FIG. is an example showing the configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.

[0284] In addition, in this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it can be assumed that the user terminal 20 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0285] The control unit 210 controls the entire user terminal 20. The control unit 210 may be composed of a controller, a control circuit, etc. that can be described based on common knowledge in the technical field related to the present disclosure.

[0286] The control unit 210 may also control the generation, mapping, etc. of signals. The control unit 210 may also control transmission / reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission / reception unit 220.

[0287] The transmission / reception unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmission processing unit 2211 and a reception processing unit 2212. The transmission / reception unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. that can be described based on common knowledge in the technical field related to the present disclosure.

[0288] The transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may also be composed of a transmission processing unit 2211 and an RF unit 222. The reception unit may also be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0289] The transmission / reception antenna 230 can be composed of an antenna described based on common knowledge in the technical field related to the present disclosure, such as an array antenna.

[0290] The transmission / reception unit 220 may also receive the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission / reception unit 220 may also transmit the above-mentioned uplink channels, uplink reference signals, etc.

[0291] The transmission / reception unit 220 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmission beam and a reception beam.

[0292] The transmission / reception unit 220 (transmission processing unit 2211), for example, may also perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0293] The transmission / reception unit 220 (transmission processing unit 2211) may also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing (filtering), DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

[0294] In addition, regarding whether to apply DFT processing, it may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when the transform precoding is effective (enabled), the transmission / reception unit 220 (transmission processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using the DFT-s-OFDM waveform, otherwise, the transmission / reception unit 220 (transmission processing unit 2211) may not perform DFT processing as the above-mentioned transmission processing.

[0295] The transmission / reception unit 220 (RF unit 222) may also perform modulation to the radio frequency band, filter processing (filtering), amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 230.

[0296] On the other hand, the transmission / reception unit 220 (RF unit 222) can also perform amplification, filter processing (filtering), demodulation to a baseband signal, etc. on the signals in the radio frequency band received through the transmission / reception antenna 230.

[0297] The transmission / reception unit 220 (reception processing unit 2212) can also perform reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing (filtering), demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing on the obtained baseband signal, and obtain user data, etc.

[0298] The transmission / reception unit 220 (measurement unit 223) can also perform measurements related to the received signal. For example, the measurement unit 223 can perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 can also measure received power (e.g., RSRP), reception quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results can also be output to the control unit 210.

[0299] In addition, the transmission unit and the reception unit of the user terminal 20 in the present disclosure can also be constituted by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.

[0300] The transmission / reception unit 220 can also receive a pilot signal whose sequence is generated based on the cell identification number. The control unit 210 can also control synchronization processing, demodulation processing, and position location processing based on at least a part of the sequence of the pilot signal, or at least a part of the resource corresponding to the pilot signal.

[0301] It can also be that the entire sequence of the pilot signal is used as a demodulation reference signal, and the entire or a part of the sequence of the pilot signal is used as a synchronization signal. A plurality of candidates for the time position of the resource configured to correspond to the pilot signal can also be defined or set. The control unit 210 can also perform control to perform at least one of synchronization processing, demodulation processing, and position location processing based on at least one of the time position and the frequency position where the sequence of the pilot signal is mapped.

[0302] The transmission / reception unit 220 may also receive a synchronization signal / physical broadcast channel (SS / PBCH) block including a first synchronization signal (e.g., PSS), a second synchronization signal (e.g., SSS), and a physical broadcast channel in the first wireless communication system, and receive a signal group for the second wireless communication system in the second wireless communication system. The control unit 210 may also control at least one of synchronization processing, frequency offset correction, cell ID determination, system information acquisition, and cell positioning in the second wireless communication system based on both the SS / PBCH block and the signal group.

[0303] The signal group may also have a structure that does not include at least one of the first synchronization signal, the second synchronization signal, and the physical broadcast channel. Alternatively, the signal group may have a structure that includes one type of synchronization signal instead of including two types of synchronization signals as in the existing system.

[0304] The control unit 210 may also determine at least one of a cell ID, a beam ID, and a frame number corresponding to the second wireless communication system based on the relationship between the time positions of the SS / PBCH block and the signal group. For one symbol supported in the first wireless communication system, in the case of including a plurality of symbols supported in the second wireless communication system, a plurality of SS / PBCH blocks and a plurality of signal groups may also be mapped to overlap with each other in the time domain.

[0305] (Hardware Structure)

[0306] In addition, the block diagrams used in the description of the above embodiments illustrate blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block may be implemented by a single device physically or logically combined, or may be implemented by two or more physically or logically separated devices directly or indirectly (e.g., by wire, wireless, etc.) connected with these multiple devices. The functional block may also be implemented by combining the above single device or the above multiple devices with software.

[0307] Here, in the functions, there are judgment, decision-making, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notifying, communicating, forwarding, configuration (setting), reconfiguration (re - setting), allocation (allocating, mapping), assignment, etc., but not limited to these. For example, a functional block (structural unit) that implements the transmission function can also be called a transmitting unit, a transmitter, etc. Any one of them is as described above, and its implementation method is not particularly limited.

[0308] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure can also function as a computer that performs the processing of the wireless communication method of the present disclosure. Figure 19 It is a diagram showing an example of the hardware structure of a base station and a user terminal according to an embodiment. The above - mentioned base station 10 and user terminal 20 can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0309] In addition, in the present disclosure, terms such as device, circuit, equipment, section, unit, etc. can be rewritten with each other. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of each device shown in the figure, or can be configured not to include some devices.

[0310] For example, only one processor 1001 is shown, but there can be multiple processors. In addition, the processing can be executed by one processor, or can be executed simultaneously, sequentially, or by other means by two or more processors. In addition, the processor 1001 can also be implemented by one or more chips.

[0311] Regarding each function in the base station 10 and the user terminal 20, for example, by reading a specific software (program) into hardware such as the processor 1001 and the memory 1002, the processor 1001 performs operations and controls the communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003, thereby realizing it.

[0312] The processor 1001 enables, for example, an operating system to operate to control the entire computer. The processor 1001 may also be constituted by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, at least a part of the above-described control unit 110 (210), transmission / reception unit 120 (220), etc. may also be implemented by the processor 1001.

[0313] In addition, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and performs various processes based on them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiments may be used. For example, the control unit 110 (210) may also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same applies to other functional blocks.

[0314] The memory 1002 may also be a computer-readable recording medium, and is constituted by, for example, at least one of a read-only memory (Read Only Memory (ROM)), an erasable programmable read-only memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable read-only memory (Electrically EPROM (EEPROM)), a random access memory (Random Access Memory (RAM)), and other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0315] The storage 1003 may also be a computer-readable recording medium, and is constituted by, for example, at least one of a flexible disc, a floppy (registered trademark) disc, an optical disc (e.g., a compact disc (Compact Disc ROM (CD-ROM))), a digital versatile disc, a Blu-ray (registered trademark) disc, a removable disc, a hard disk drive, a smart card, a flash device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0316] The communication device 1004 is hardware (a transmitting and receiving device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. In order to implement at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-described transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also be physically or logically separated into a transmitting unit 120a (220a) and a receiving unit 120b (220b).

[0317] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs an output to the outside. In addition, the input device 1005 and the output device 1006 may also have an integrated structure (e.g., a touch panel).

[0318] In addition, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be constituted by a single bus or may be constituted by different buses between the respective devices.

[0319] In addition, the base station 10 and the user terminal 20 may also 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 also be implemented by this hardware. For example, the processor 1001 may also be implemented using at least one of these hardwares.

[0320] (Variant example)

[0321] In addition, terms described in this disclosure and terms necessary for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may also be rewritten with each other. In addition, a signal may also be a message. A reference signal can also be abbreviated as RS and may also be referred to as a pilot, a pilot signal, etc. according to the applied standard. In addition, a component carrier (Component Carrier (CC)) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0322] A radio frame may also be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) independent of the numerology.

[0323] Here, the numerology may also be a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, the numerology may also represent at least one of a subcarrier spacing (SubCarrier Spacing (SCS)), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (Transmission Time Interval (TTI)), the number of symbols per TTI, a radio frame structure, a specific filter process (filtering process) performed by a transmitter-receiver in the frequency domain, a specific windowing process performed by the transmitter-receiver in the time domain, etc.

[0324] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on the numerology.

[0325] A time slot may also include a plurality of mini-slots. Each mini-slot may also 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 also be composed of a smaller number of symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0326] A radio frame, subframe, time slot, mini-slot, and symbol all represent time units for transmitting signals. A radio frame, subframe, time slot, mini-slot, and symbol may also use other corresponding names. In addition, time units such as frames, subframes, time slots, mini-slots, and symbols in the present disclosure can also be rewritten with each other.

[0327] For example, a subframe may also be referred to as a TTI, multiple consecutive subframes may also be referred to as a TTI, and a time slot or a mini-slot may also be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, may also be a period shorter than 1 ms (e.g., 1 - 13 symbols), or may also be a period longer than 1 ms. In addition, the unit representing a TTI may not be referred to as a subframe, but may be referred to as a time slot, mini-slot, etc.

[0328] Here, a TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in units of TTI. In addition, the definition of a TTI is not limited to this.

[0329] A TTI may also be a transmission time unit for data packets (transport blocks), code blocks, codewords, etc. that have undergone channel coding, and may also become a processing unit for scheduling, link adaptation, etc. In addition, when a TTI is given, the time interval (e.g., number of symbols) actually mapped with a transport block, code block, codeword, etc. may also be shorter than the TTI.

[0330] In addition, when a time slot or a mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-slots) may also become the minimum time unit for scheduling. In addition, the number of time slots (mini-slot numbers) constituting the minimum time unit of this scheduling may also be controlled.

[0331] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8 - 12), standard TTI, long TTI, normal subframe, standard subframe, long subframe, time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, mini-slot, sub-time slot, time slot, etc.

[0332] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be rewritten as a TTI with a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be rewritten as a TTI with a TTI length less than that of the long TTI and more than 1 ms.

[0333] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and can also include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB can also be the same regardless of the parameter set, for example, it can also be 12. The number of subcarriers included in an RB can also be determined based on the parameter set.

[0334] In addition, an RB can also include one or more symbols in the time domain, and can also be the length of one time slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, etc. can also be composed of one or more resource blocks respectively.

[0335] In addition, one or more RBs can also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0336] In addition, a resource block can also be composed of one or more resource elements (REs). For example, one RE can also be a radio resource area of one subcarrier and one symbol.

[0337] A bandwidth part (BWP) (which can also be referred to as a partial bandwidth, etc.) can also represent a subset of consecutive common RBs (common resource blocks) used for a certain parameter set in a certain carrier. Here, the common RBs can also be determined by the index of the RBs based on the common reference point of the carrier. A PRB can also be defined in a certain BWP and be additionally numbered within that BWP.

[0338] An UL BWP (BWP for UL) and a DL BWP (BWP for DL) can also be included in a BWP. For a UE, one or more BWPs can also be set within one carrier.

[0339] At least one of the set BWPs can also be active, and the UE can also not assume to transmit and receive specific signals / channels outside the active BWP. In addition, "cell", "carrier", etc. in the present disclosure can also be rewritten as "BWP".

[0340] In addition, the structures such as the above-mentioned radio frames, sub-frames, time slots, mini time slots, and symbols are merely illustrative. For example, the number of sub-frames included in a radio frame, the number of time slots in each sub-frame or radio frame, the number of mini time slots included in a time slot, the symbols included in a time slot or mini time slot, the number of RBs, the number of sub-carriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be changed in various ways.

[0341] In addition, the information, parameters, etc. described in the present disclosure can be represented by absolute values, relative values with respect to a specific value, or can also be represented by corresponding other information. For example, radio resources can also be indicated by a specific index.

[0342] In the present disclosure, the names used for parameters, etc. are not restrictive names in all aspects. Furthermore, mathematical expressions using these parameters, etc. can also be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name. Therefore, the various names assigned to these various channels and information elements are not restrictive names in all aspects.

[0343] The information, signals, etc. described in the present disclosure can also be represented using any one of various different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0344] In addition, information, signals, etc. can be output in at least one of the following directions: from a higher layer to a lower layer, and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0345] The input and output information, signals, etc. can be stored in a specific location (e.g., a memory), or can be managed using a management table. The input and output information, signals, etc. can be overwritten, updated, or appended. The output information, signals, etc. can also be deleted. The input information, signals, etc. can also be sent to other devices.

[0346] The notification of information is not limited to the manners / embodiments described in the present disclosure, and other methods may also be used. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0347] In addition, physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, and may also be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration (RRC Connection Re - setting (RRCConnection Reconfiguration)) message, etc. In addition, MAC signaling may be notified, for example, using a MAC Control Element (MACControlElement (CE)).

[0348] In addition, the notification of specific information (e.g., the notification of "is X") is not limited to explicit notification, and may also be performed implicitly (e.g., by not performing the notification of the specific information, or by the notification of other information).

[0349] The determination may be made by a value represented by one bit (0 or 1), may also be made by a true - false value (Boolean value) represented by true or false, and may also be made by a numerical comparison (e.g., comparison with a specific value).

[0350] Software, whether referred to as software, firmware, middleware, micro-code, hardware description language, or by any other name, should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, sub-programs, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, threads of execution, procedures, functions, etc.

[0351] In addition, software, instructions, information, etc. can also be sent and received via a transmission medium. For example, in the case of sending software from a website, server, or other remote source using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included in the definition of the transmission medium.

[0352] Terms such as "system" and "network" used in this disclosure can be used interchangeably. "Network" can also mean a device (e.g., a base station) included in the network.

[0353] In this disclosure, terms such as "precoding", "precoder", "weights (precoding weights)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel", etc. can be used interchangeably.

[0354] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier" can be used interchangeably. There are also cases where the base station is referred to by terms such as macro cell, small cell, femto cell, pico cell, etc.

[0355] A base station can accommodate one or more (e.g., three) cells. In the case where a base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas can also provide communication services through a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within that coverage range.

[0356] In the present disclosure, the situation where a base station sends information to a terminal can also be rewritten as the base station instructing the terminal to perform control / operation based on that information.

[0357] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "user device (User Equipment (UE))", "terminal" can be used interchangeably.

[0358] There are also cases where the mobile station is referred to by terms such as subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or several other appropriate terms.

[0359] At least one of the base station and the mobile station can also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station can also be a device mounted on a moving object, the moving object itself, etc.

[0360] The mobile object refers to an object that can move, with an arbitrary moving speed, and of course includes the case where the mobile object stops. The mobile object includes, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected vehicles, loading shovels, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trolleys, rickshaws, ships (boats and other watercraft), airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and objects mounted on them. In addition, it is not limited to these. Furthermore, the mobile object can also be a mobile object that autonomously travels based on an operation instruction.

[0361] The mobile object can be either a means of transportation (e.g., vehicles, airplanes, etc.), or a mobile object that moves in an unmanned manner (e.g., drones, autonomous vehicles, etc.), or a robot (humanoid or non-humanoid). 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 can also be an Internet of Things (IoT) device such as a sensor.

[0362] Figure 20 It is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes: a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a gearshift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotational speed sensor 51, a pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a gearshift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0363] The drive unit 41 is composed of, for example, at least one of an engine, an electric motor, and a hybrid of an engine and an electric motor. The steering unit 42 is configured to at least include a steering wheel (also referred to as a steering disk), and steers at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0364] The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (e.g., an input / output (I / O) port) 63. Signals from various sensors 50 - 58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an electronic control unit (ECU).

[0365] As signals from various sensors 50 - 58, there are a current signal from a current sensor 50 that senses the current of the motor, a rotational speed signal of the front wheels 46 / rear wheels 47 obtained by a rotational speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of an accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of a brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of a shift lever 45 obtained by a shift lever sensor 57, a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and the like.

[0366] The information service unit 59 is composed of various devices such as a vehicle navigation system, an audio system, a speaker, a display, a television, and a radio for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information obtained from an external device via a communication module 60 and the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0367] The information service unit 59 may include an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) for accepting an input from the outside, or may include an output device (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) for performing an output to the outside.

[0368] The driving assistance system unit 64 is composed of various devices such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (such as Global Navigation Satellite System (GNSS), etc.), map information (such as high-precision (High Definition (HD)) maps, Autonomous Vehicle (AV) maps, etc.), gyroscopic systems (such as inertial measurement devices (Inertial Measurement Unit (IMU)), inertial navigation devices (Inertial Navigation System (INS)), etc.), artificial intelligence (Artificial Intelligence (AI)) chips, AI processors, etc. for providing functions to prevent accidents in advance or reduce the driver's driving load, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 64 transmits and receives various information via the communication module 60 and realizes the driving assistance function or the autonomous driving function.

[0369] The communication module 60 can communicate with the microprocessor 61 and the structural elements of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 between the driving unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, gear lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, the microprocessor 61 and the memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50 - 58 provided in the vehicle 40.

[0370] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with external devices. For example, various information is transmitted and received via wireless communication with external devices. The communication module 60 can be located either inside or outside the electronic control unit 49. The external device can also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 can also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (and can also function as at least one of the base station 10 and user terminal 20).

[0371] The communication module 60 can also transmit at least one of the following to an external device via wireless communication: signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on such signals, and information based on inputs from the external (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. can also be referred to as input units that receive inputs. For example, the PUSCH transmitted via the communication module 60 may also include information based on the above inputs.

[0372] The communication module 60 receives various information (traffic information, traffic light information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 provided in the vehicle. The information service unit 59 can also be referred to as an output unit that outputs information (for example, based on the PDSCH received via the communication module 60 (or data / information decoded from the PDSCH), outputs information to devices such as a display and a speaker).

[0373] In addition, the communication module 60 stores various information received from an external device in a memory 62 that can be utilized by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the gear lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the various sensors 50-58, etc. provided in the vehicle 40 based on the information stored in the memory 62.

[0374] In addition, the base station in the present disclosure can also be rewritten as a user terminal. For example, for a structure in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, it can also be referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), the various aspects / embodiments of the present disclosure can also be applied. In this case, it can also be a structure in which the user terminal 20 has the functions of the above base station 10. In addition, terms such as "uplink" and "downlink" can also be rewritten as terms corresponding to inter-terminal communication (for example, "sidelink"). For example, an uplink channel, a downlink channel, etc. can also be rewritten as a sidelink channel.

[0375] Similarly, the user terminal in the present disclosure can also be rewritten as a base station. In this case, it can also be a structure in which the base station 10 has the functions of the above user terminal 20.

[0376] In the present disclosure, actions performed by a base station may sometimes be performed by its upper node depending on the situation. Apparently, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, considering a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0377] Each mode / embodiment described in the present disclosure may be used alone, in combination, or switched during execution. In addition, the processing procedures, timings, flowcharts, etc. of each mode / embodiment described in the present disclosure may be rearranged as long as there is no contradiction. For example, for the methods described in the present disclosure, elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0378] Each mode / embodiment described in the present disclosure can also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), 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 an integer or a decimal, for example)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, next-generation systems enhanced, modified, made, or defined based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G) and applied.

[0379] The description "based on" used in the present disclosure, unless otherwise specified, does not mean "only based on". In other words, the description "based on" means both "only based on" and "at least based on".

[0380] Any reference to an element using designations such as "first", "second", etc. used in this disclosure does not comprehensively define the quantity or order of these elements. These designations can be used in this disclosure as a convenient method for distinguishing between two or more elements. Therefore, the reference to the first and second elements does not mean that only two elements can be adopted, or that the first element must be prior to the second element in a certain form.

[0381] The term "determining" used in this disclosure may cover a variety of actions in some cases. For example, "determining" may also be the case where judging, calculating, computing, processing, deriving, investigating, looking up (searching, inquiring in, for example, a table, a database, or other data structures), ascertaining, etc. are regarded as performing "determining".

[0382] In addition, "determining" may also be the case where receiving (for example, receiving information), transmitting (for example, transmitting information), input, output, accessing (for example, accessing data in a memory), etc. are regarded as performing "determining".

[0383] In addition, "determining" may also be the case where resolving, selecting, choosing, establishing, comparing, etc. are regarded as performing "determining". That is, "determining" may also be the case where some actions are regarded as performing "determining".

[0384] In addition, "determining" may also be rewritten as "assuming", "expecting", "considering", etc.

[0385] The "maximum transmit power" described in this disclosure may either mean the maximum value of the transmit power, or the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0386] As used in this disclosure, terms such as "connected" and "coupled", or all of their variations, mean all direct or indirect connections or couplings between two or more elements, and can include the case where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination of them. For example, "connected" can also be rewritten as "access".

[0387] In this disclosure, when two elements are connected, it is possible to consider that they are "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and as several non-limiting and non-inclusive examples, using electromagnetic energy having wavelengths in the radio frequency range, microwave region, optical (both visible and invisible) region, etc., so as to be "connected" or "coupled" to each other.

[0388] In this disclosure, a term such as "A is different from B" can also mean the meaning of "A and B are different from each other". In addition, this term can also mean the meaning of "A and B are respectively different from C". Terms such as "separated" and "combined" can also be interpreted in the same way as "different".

[0389] When using "include", "including", and their variations in this disclosure, these terms, like the term "comprising", are meant in an inclusive sense. Furthermore, the term "or" used in this disclosure does not mean the exclusive or meaning.

[0390] In this disclosure, for example, in the case where articles are added by translation such as a, an, and the in English, this disclosure can also include the case where the nouns following these articles are in the plural form.

[0391] In this disclosure, "below", "less than", "above", "more than", "equal to", etc. can also be rewritten with each other. In addition, in this disclosure, terms meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. are not limited to the positive degree, comparative degree, and superlative degree, and can also be rewritten with each other. In addition, in this disclosure, terms meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be expressed as expressions with "the i-th" (i is an arbitrary integer) added, and can be rewritten with each other without being limited to the positive degree, comparative degree, and superlative degree (for example, "the highest" can also be rewritten with "the i-th highest").

[0392] In the present disclosure, "of", "for", "regarding", "related to", "associated with", etc. may also be rewritten with each other.

[0393] As described above, the invention related to the present disclosure has been described in detail. However, for those skilled in the art, the invention related to the present disclosure is obviously not limited to the embodiments described in the present disclosure. The invention related to the present disclosure can be implemented in the form of amendments and changes without departing from the gist and scope of the invention determined based on the description in the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not carry any restrictive meaning for the invention related to the present disclosure.

Claims

1. A terminal, comprising: a receiving unit that receives a pilot signal whose sequence is generated based on a cell identification number; and a control unit that controls synchronization processing, demodulation processing, and position location processing based on at least a part of the sequence of the pilot signal or at least a part of a resource corresponding to the pilot signal.

2. The terminal according to claim 1, wherein the entire sequence of the pilot signal is used as a demodulation reference signal, and the entire sequence or a part of the sequence of the pilot signal is used as a synchronization signal.

3. The terminal according to claim 1, wherein a plurality of candidates for time positions where resources corresponding to the pilot signal are configured are defined or set.

4. The terminal according to claim 1, wherein the control unit performs at least one of the synchronization processing, the demodulation processing, and the position location processing based on at least one of a time position and a frequency position where the sequence of the pilot signal is mapped.

5. A wireless communication method for a terminal, comprising: a step of receiving a pilot signal whose sequence is generated based on a cell identification number; and a step of controlling synchronization processing, demodulation processing, and position location processing based on at least a part of the sequence of the pilot signal or at least a part of a resource corresponding to the pilot signal.

6. A base station, comprising: a transmitting unit that transmits a pilot signal whose sequence is generated based on a cell identification number to a terminal; and a control unit that controls whether the pilot signal is used for any one of synchronization processing, demodulation processing, and position location processing in the terminal through at least a part of the sequence of the pilot signal or at least a part of a resource corresponding to the pilot signal.

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