Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure has a reception unit for receiving configuration information relating to random access that is associated with a Public Land Mobile Network (PLMN) ID and is included in a specific system information block (SIB), and a control unit for controlling two-step random access associated with the PLMN ID on the basis of the configuration information. As a result of the one embodiment of the present disclosure, it is possible for flexible communication operations to be carried out between operators.

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) was standardized for the purpose of further high-speed data rates, low latency, etc. (Non-Patent Document 1). Also, for the purpose of further large capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel.10-14) was standardized.

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

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

[0005] In future wireless communication systems (e.g., Rel.18 and beyond), resource sharing is being considered to improve the efficiency of frequency band utilization (existing frequency bands and new high-frequency bands).

[0006] However, there are cases where it is not possible to change settings for a specific UE across multiple carriers. In such cases, carriers may not be able to flexibly manage communications, potentially hindering improvements in communication quality.

[0007] Therefore, one of the objectives of this disclosure is to provide terminals, wireless communication methods, and base stations that enable flexible communication operations between businesses. [Means for solving the problem]

[0008] A terminal according to one aspect of this disclosure includes a receiving unit that receives configuration information relating to random access associated with a Public Land Mobile Network (PLMN) ID, which is included in a specific system information block (SIB), and a control unit that controls two-step random access associated with the PLMN ID based on the configuration information. The configuration information is at least one of the following: the configuration of the physical uplink shared channel (PUSCH) of message A; at least one specific parameter included in the configuration of the PUSCH of message A; the resource configuration of the PUSCH of message A; and at least one specific parameter included in the resource configuration of the PUSCH of message A. . [Effects of the Invention]

[0009] According to one aspect of this disclosure, flexible communication operations can be carried out between carriers. [Brief explanation of the drawing]

[0010] [Figure 1] Figures 1A-1D show an example of network sharing. [Figure 2] Figure 2 shows an example of RACH settings according to Embodiment 1-1. [Figure 3] Figure 3 shows an example of RACH settings according to Embodiment 1-2. [Figure 4] Figure 4 shows an example of RACH settings according to Embodiment 1-3. [Figure 5] Figure 5 shows an example of RACH settings according to Embodiment 1-4. [Figure 6] Figure 6 shows an example of RACH settings according to Embodiment 1-5. [Figure 7] Figure 7 shows an example of RACH settings according to Embodiment 1-6. [Figure 8] Figure 8 shows an example of a schematic configuration of a wireless communication system according to one embodiment. [Figure 9] Figure 9 shows an example of the configuration of a base station according to one embodiment. [Figure 10] Figure 10 shows an example of the configuration of a user terminal according to one embodiment. [Figure 11] Figure 11 shows an example of the hardware configuration of a base station and a user terminal according to one embodiment. [Figure 12] Figure 12 shows an example of a vehicle according to one embodiment. [Modes for carrying out the invention]

[0011] (Resource sharing) In future wireless communication systems (e.g., Rel.18 and beyond), resource sharing is being considered to improve the efficiency of frequency band utilization (existing frequency bands and new high-frequency bands).

[0012] Resource sharing allows multiple operators to share a Radio Access Network (RAN), dividing the network (NW, e.g., base stations) investment costs among operators and enabling the installation of a large number of base stations.

[0013] For example, by sharing an antenna site (land / transmission tower, etc.) among multiple operators, the cost of setting up the station can be shared among those operators.

[0014] Also, by sharing distributed nodes (e.g., Distributed Unit (DU)) / aggregation nodes (e.g., Central Unit (CU)) among multiple operators (e.g., sharing the hardware infrastructure), the device cost can be shared among the multiple operators.

[0015] Also, by sharing frequency / antenna units (e.g., Radio Unit (RU)) among multiple operators, the utilization efficiency of resources can be improved, for example, resources not used by a certain operator can be made available for other operators to use.

[0016] Figures 1A - 1D are diagrams showing an example of network sharing.

[0017] Figure 1A shows an example of site sharing. As shown in Figure 1A, in site sharing, multiple operators share the antenna site. On the other hand, for the service platform, HSS (Home Subscriber Server) / HLR (Home Location Register), Core Network (CN) Packet Switching (PS), base stations, and cells / frequencies, they are independent for each of the multiple operators.

[0018] Figure 1B shows an example of MORAN (Multi Operator RAN). As shown in Figure 1B, in MORAN, multiple operators share, in addition to the antenna site, a part of the base station (e.g., the hardware of the base station). On the other hand, for the service platform, HSS / HLR, CN PS, other parts of the base station (e.g., the software of the base station), and cells / frequencies, they are independent for each of the multiple operators.

[0019] Figure 1C shows an example of a Multi-Operator Core Network (MOCN). As shown in Figure 1C, in an MOCN, multiple operators share base stations and cells / frequencies. On the other hand, the service platform, HSS / HLR, and CN PS are independent for each of the multiple operators.

[0020] Figure 1D shows an example of a Gateway Core Network (GWCN). As shown in Figure 1D, in a GWCN, multiple operators share the CN PS, base stations, and cells / frequencies. On the other hand, the service platform and HSS / HLR are independent for each of the multiple operators.

[0021] In MOCN / GWCN, since cells are shared by multiple operators, it is desirable to be able to change settings for each operator (for example, for each Public Land Mobile Network (PLMN) ID (PLMN ID)).

[0022] For example, in existing specifications, whether or not to allow initial access to a cell, the tracking area code, and the unique cell ID within the PLMN can be set for each PLMN ID.

[0023] On the other hand, for terminals in an RRC connected state (user terminals, User Equipment (UE)), individual settings for each operator can be configured as RRC settings according to the terminal's PLMN ID. Specifically, in resource sharing, if you want to make a portion of the time resources of a shared cell available only to terminals of a specific operator, you can configure other operators' terminals not to use those time resources.

[0024] However, under the existing specifications, many settings for specific UEs (e.g., UEs during initial access / idle mode), such as notification information, are not provided per operator (e.g., PLMN ID), making it impossible to change settings across multiple operators. For example, parameters used to configure Random Access Channel (RACH) resources within System Information Block 1 (SIB1) (e.g., ServingCellConfigCommonSIB) are not provided per PLMN ID, making it impossible to configure / change UE RACH resources on an operator-by-operator basis.

[0025] Thus, if multiple carriers cannot change settings for a specific UE, they will be unable to flexibly manage communications on a carrier-by-carrier basis, which may hinder improvements in communication quality.

[0026] Therefore, the inventors conceived of a flexible method for applying and setting operational policies and parameters among operators in order to efficiently utilize station placement and frequencies through resource sharing.

[0027] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0028] In this disclosure, "A / B" and "at least one of A and B" may be interpreted as mutually exclusive. In this disclosure, "A / B / C" may mean "at least one of A, B, and C".

[0029] In this disclosure, terms such as activate, deactivate, indicate, select, configure, update, and determine may be interpreted interchangeably. In this disclosure, terms such as support, control, controllable, operate, and operable may be interpreted interchangeably.

[0030] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IE), settings, etc., may be interpreted interchangeably. In this disclosure, Medium Access Control elements (MAC Control Element (CE)), update commands, activation / deactivation commands, etc., may be interpreted interchangeably.

[0031] In this disclosure, the upper-layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

[0032] In this disclosure, MAC signaling may include, for example, MAC Control Elements (MAC CEs) and MAC Protocol Data Units (PDUs). Broadcast information may include, for example, Master Information Blocks (MIBs), System Information Blocks (SIBs), Remaining Minimum System Information (RMSIs), and Other System Information (OSIs).

[0033] In this disclosure, physical layer signaling may include, for example, Downlink Control Information (DCI) and Uplink Control Information (UCI).

[0034] In this disclosure, terms such as index, identifier (ID), indicator, and resource ID may be interpreted interchangeably. In this disclosure, terms such as sequence, list, set, group, cluster, and subset may be interpreted interchangeably.

[0035] In this disclosure, terms such as ignore, drop, suspend, cancel, puncture, rate match, and postpone may be interpreted interchangeably.

[0036] In this disclosure, specific IDs, IDs relating to Public Land Mobile Network (PLMN), PLMN IDs, PLMN identifiers, PLMN Identity, PLMN identifier information, PLMN Identity information, PLMN ID information, information for identifying a business operator, IDs for identifying a business operator, IDs for each business operator, group IDs, PLMN group IDs, etc., may be interpreted interchangeably.

[0037] In this disclosure, PLMN, business operator, operator policy, business operator settings, operator settings, etc., may be interpreted interchangeably.

[0038] (Wireless communication method) In this disclosure, the PLMN ID will be used as an example of a specific ID, but the name of the specific ID is not limited to this.

[0039] In this disclosure, a specific parameter (RRC parameter) may be associated with a specific ID (e.g., PLMN ID).

[0040] Regarding the association, the specific parameter may include a parameter relating to a specific ID.

[0041] Regarding the association, another parameter included in that specific parameter may contain a parameter relating to a specific ID.

[0042] Regarding the association, a new parameter included in the specific parameter may be associated with a parameter relating to a specific ID. The new parameter may include a parameter relating to a specific ID.

[0043] In this disclosure, the terms SIB used for initial access, SIB1, the first SIB, and a specific SIB may be interpreted as interchangeable.

[0044] In this disclosure, for each RRC parameter, a statement indicating the release in which the RRC parameter is defined may be added.

[0045] The notation may be, for example, "-r18". The RRC parameter to which the notation is attached and the RRC parameter to which the notation is not attached may be the same parameter. For example, prach-ConfigurationPeriodScaling-IAB and prach-ConfigurationPeriodScaling-IAB-r18 may mean the same parameter. Note that "-r18" is merely an example and may be replaced with any notation (for example, "-r17" / "-r19", etc.), and the notation may not be attached to the RRC parameter at all.

[0046] <First Embodiment> It may be supported to configure separate (independent) random access channels (RACHs) for each specific ID (e.g., PLMN ID).

[0047] The UE may receive RACH settings that are configured separately for each specific ID. Based on the received RACH settings, the UE may perform RACH operations / random access procedures.

[0048] The RACH may, for example, be a 2-step RACH / random access.

[0049] Embodiment 1-1 A specific ID (e.g., PLMN ID) may be associated with the settings for message A (e.g., MsgA-ConfigCommon).

[0050] For example, the settings for message A (e.g., MsgA-ConfigCommon) may include a specific ID (e.g., PLMN ID).

[0051] Figure 2 shows an example of the RACH settings according to Embodiment 1-1. Figure 2 is written using ASN.1 (Abstract Syntax Notation One) notation (the same applies to subsequent figures).

[0052] In the example shown in Figure 2, MsgA-ConfigCommon includes a parameter (plmn-id) indicating the PLMN ID.

[0053] Using the information elements shown in Figure 2, the UE can determine the RACH setting configured for each PLMN ID.

[0054] Embodiment 1-2 A specific ID (e.g., PLMN ID) may be associated with the settings for message A PUSCH (e.g., MsgA-PUSCH-Config).

[0055] For example, the configuration for message A PUSCH (e.g., MsgA-PUSCH-Config) may include a specific ID (e.g., PLMN ID).

[0056] For example, at least one specific parameter included in the configuration of message A PUSCH (e.g., MsgA-PUSCH-Config) may include a specific ID (e.g., PLMN ID).

[0057] Figure 3 shows an example of RACH settings according to Embodiment 1-2.

[0058] In the example shown in Figure 3, MsgA-PUSCH-Config includes a parameter (plmn-id) indicating the PLMN ID.

[0059] Using the information elements shown in Figure 3, the UE can determine the RACH setting configured for each PLMN ID.

[0060] In the example shown in Figure 3, MsgA-PUSCH-Config includes a parameter indicating the PLMN ID, but the PLMN ID may be associated with a specific parameter included in MsgA-PUSCH-Config.

[0061] The specific parameter in question may be at least one of the following parameters: • Parameters related to the resources of message A PUSCH (e.g., msgA-PUSCH-ResourceGroupA / msgA-PUSCH-ResourceGroupB). • Parameters related to the transform precoder for message A PUSCH (e.g., msgA-TransformPrecoder). • Message A: Parameters related to data scrambling in PUSCH (msgA-DataScramblingIndex). • Parameter related to the power offset of message A PUSCH (msgA-DeltaPreamble).

[0062] Embodiments 1-3 A specific ID (e.g., PLMN ID) may be associated with the settings of the Message A PUSCH resource (e.g., MsgA-PUSCH-Resource).

[0063] For example, the settings for the message A PUSCH resource (e.g., MsgA-PUSCH-Resource) may include a specific ID (e.g., PLMN ID).

[0064] For example, at least one specific parameter included in the configuration of the message A PUSCH resource (e.g., MsgA-PUSCH-Resource) may include a specific ID (e.g., PLMN ID).

[0065] Figure 4 shows an example of RACH settings according to Embodiment 1-3.

[0066] In the example shown in Figure 4, the MsgA-PUSCH-Resource includes a parameter (plmn-id) indicating the PLMN ID.

[0067] Using the information elements shown in Figure 4, the UE can determine the RACH setting configured for each PLMN ID.

[0068] In the example shown in Figure 4, the MsgA-PUSCH-Resource includes a parameter indicating the PLMN ID, but the PLMN ID may be associated with a specific parameter included in the MsgA-PUSCH-Resource.

[0069] The specific parameter in question may be at least one of the following parameters: • A parameter indicating the Modulation Coding Scheme (MCS) index for message A PUSCH (e.g., msgA-MCS). • A parameter indicating the number of slots for message A PUSCH (e.g., nrofSlotsMsgA-PUSCH). • The number of time-domain push opportunities in each slot (e.g., nrofMsgA-PO-PerSlot). A parameter indicating the time offset from the start of the PRACH slot to message A PUSCH (e.g., msgA-PUSCH-TimeDomainOffset). • Parameters indicating the allocation (start symbol and length) for message A PUSCH (e.g., msgA-PUSCH-TimeDomainAllocation). • Parameters indicating the disclosure symbol, length, and mapping type of the Message A PUSCH opportunity (e.g., startSymbolAndLengthMsgA-PO). • A parameter indicating the mapping type of message A PUSCH (e.g., mappingTypeMsgA-PUSCH). A parameter indicating the guard period between PUSCH opportunities (e.g., guardPeriodMsgA-PUSCH). • A parameter indicating the guard band between FDM-decoded PUSCH opportunities (e.g., guardBandMsgA-PUSCH). • A parameter (e.g., frequencyStartMsgA-PUSCH) that indicates the offset of the lowest push opportunity in the frequency domain for a specific PRB (e.g., PRB 0). • A parameter indicating the number of PRBs per PUSCH opportunity (e.g., nrofPRBs-PerMsgA-PO). A parameter indicating the number of message A PUSCH opportunities to be FDM'd in a single time instance (e.g., nrofMsgA-PO-FDM). • A parameter indicating intra-slot frequency hopping for each PUSCH opportunity (e.g., msgA - IntraSlotFrequencyHopping). • A parameter indicating the frequency offset used for the second hop (e.g., msgA-HoppingBits). • DMRS configuration for message A PUSCH (e.g., msgA-DMRS-Config). • A parameter indicating the number of DMRS sequences for message A PUSCH (e.g., nrofDMRS-Sequences). • A parameter indicating the alpha value of message A PUSCH (e.g., msgA-Alpha). • A parameter indicating the interlace index of the first PUSCH opportunity in the frequency domain (e.g., interlaceIndexFirstPO-MsgA-PUSCH). • A parameter indicating the number of consecutive interlaces per PUSCH opportunity (e.g., nrofInterlacesPerMsgA-PO).

[0070] Embodiments 1-4 A specific ID (e.g., PLMN ID) may be associated with the DMRS configuration for message A PUSCH (e.g., MsgA-DMRS-Config).

[0071] For example, the DMRS configuration for message A PUSCH (e.g., MsgA-DMRS-Config) may include a specific ID (e.g., PLMN ID).

[0072] For example, at least one specific parameter in the DMRS configuration for message A PUSCH (e.g., MsgA-DMRS-Config) may include a specific ID (e.g., PLMN ID).

[0073] Figure 5 shows an example of RACH settings according to Embodiment 1-4.

[0074] In the example shown in Figure 5, the MsgA-DMRS-Config includes a parameter (plmn-id) indicating the PLMN ID.

[0075] Using the information elements shown in Figure 5, the UE can determine the RACH setting configured for each PLMN ID.

[0076] In the example shown in Figure 5, the MsgA-DMRS-Config includes a parameter indicating the PLMN ID, but the PLMN ID may be associated with a specific parameter included in the MsgA-DMRS-Config.

[0077] The specific parameter in question may be at least one of the following parameters: • A parameter indicating the location of additional DMRS in message A PUSCH (e.g., msgA-DMRS-AdditionalPosition). A parameter indicating the maximum length (single or double symbol) of the DMRS for message A PUSCH (e.g., msgA-MaxLength). • A parameter indicating the CDM group of the DMRS in message A PUSCH (e.g., msgA-PUSCH-DMRS-CDM-Group). • A parameter indicating the number of DMRS ports for message A PUSCH (e.g., msgA-PUSCH-NrofPorts). • A parameter indicating the scrambling ID for message A PUSCH (e.g., msgA-ScramblingID0 / msgA-ScramblingID1).

[0078] Embodiments 1-5 A specific ID (e.g., PLMN ID) may be associated with a RACH configuration for two-step random access (e.g., RACH-ConfigCommonTwoStepRA).

[0079] For example, a RACH configuration for two-step random access (e.g., RACH-ConfigCommonTwoStepRA) may include a specific ID (e.g., PLMN ID).

[0080] For example, at least one specific parameter in a RACH configuration for two-step random access (e.g., RACH-ConfigCommonTwoStepRA) may include a specific ID (e.g., PLMN ID).

[0081] Figure 6 shows an example of RACH settings according to Embodiment 1-5.

[0082] In the example shown in Figure 6, RACH-ConfigCommonTwoStepRA includes a parameter (plmn-id) that indicates the PLMN ID.

[0083] Using the information elements shown in Figure 6, the UE can determine the RACH setting configured for each PLMN ID.

[0084] In the example shown in Figure 6, RACH-ConfigCommonTwoStepRA includes a parameter indicating the PLMN ID, but the PLMN ID may be associated with a specific parameter included in RACH-ConfigCommonTwoStepRA.

[0085] The specific parameter in question may be at least one of the following parameters: • Generic parameters for RACH configuration for 2-step random access (e.g., rach-ConfigGenericTwoStepRA). • A parameter indicating the total number of random access preambles (e.g., msgA - TotalNumberOfRA - Preambles). • A parameter indicating the number of SSBs per RACH opportunity and the number of contention-based preambles per SSB (e.g., msgA-SSB-PerRACH-OccasionAndCB-PreamblesPerSSB). • A parameter indicating the number of contention-based preambles used for 2-step random access types, compared to a non-contention-based 4-step random access preamble (e.g., msgA-CB-PreamblesPerSSB-PerSharedRO). • A parameter indicating a subset of the 4-step random access opportunities shared by the 2-step random access type for each SSB (e.g., msgA-SSB-SharedRO-MaskIndex). • A parameter indicating the preamble group for the two-step random access type (e.g., groupB-ConfiguredTwoStepRA). • A parameter indicating the root sequence index of PRACH (e.g., msgA-PRACH-RootSequenceIndex). • A parameter indicating the maximum number of message A transmissions to be performed before switching to 4-step random access (e.g., msgA-TransMax). • A parameter indicating the threshold for two-step random access selection (e.g., msgA-RSRP-Threshold). • A parameter indicating the SSB threshold for PRACH resource selection (e.g., msgA-RSRP-ThresholdSSB). • A parameter indicating the subcarrier spacing in PRACH (e.g., msgA - SubcarrierSpacing). A parameter (e.g., msgA-RestrictedSetConfig) that indicates whether the 2-step random access preamble is restricted or unrestricted. • Parameters applied when prioritizing random access (e.g., ra-PrioritizationForAccessIdentityTwoStep). • A parameter indicating the collision resolution timer (e.g., ra-ContentionResolutionTimer).

[0086] Furthermore, rach-ConfigGenericTwoStepRA may be a parameter used for both random access and beam fault recovery two-step RACH.

[0087] Embodiments 1-6 A specific ID (e.g., PLMN ID) may be associated with a generic parameter in the RACH configuration for two-step random access (e.g., RACH-ConfigGenericTwoStepRA).

[0088] For example, a generic parameter in the RACH configuration for two-step random access (e.g., RACH-ConfigGenericTwoStepRA) may include a specific ID (e.g., PLMN ID).

[0089] For example, at least one specific parameter included in the generic parameters of a 2-step random access RACH configuration (e.g., RACH-ConfigGenericTwoStepRA) may include a specific ID (e.g., PLMN ID).

[0090] Figure 7 shows an example of RACH settings according to Embodiment 1-6.

[0091] In the example shown in Figure 7, RACH-ConfigGenericTwoStepRA includes a parameter (plmn-id) that indicates the PLMN ID.

[0092] Using the information elements shown in Figure 7, the UE can determine the RACH setting configured for each PLMN ID.

[0093] Note that while Figure 7 shows an example where RACH-ConfigGenericTwoStepRA includes a parameter indicating the PLMN ID, the PLMN ID may be associated with a specific parameter included in RACH-ConfigGenericTwoStepRA.

[0094] The specific parameter in question may be at least one of the following parameters: • A parameter indicating the index of the cell-specific PRACH configuration for the 2-step random access type (e.g., msgA-PRACH-ConfigurationIndex). A parameter indicating the number of opportunities to send message A PRACH within a single time instance (e.g., msgA-RO-FDM). • A parameter indicating the offset of the lowest PRACH transmission opportunity in the frequency domain for a specific PRB (e.g., PRB 0) (e.g., msgA-RO-FrequencyStart). • Parameter N for determining the cyclic shift for the message A preamble CSA parameter indicating this (for example, msgA-ZeroCorrelationZoneConfig). • A parameter indicating the power ramping step for message A PRACH (e.g., msgA-PreamblePowerRampingStep). • A parameter indicating the target power level on the network receiving end (e.g., msgA-PreambleReceivedTargetPower). • A parameter indicating the length of the monitoring window for message B, expressed in terms of the number of slots (e.g., msgB-ResponseWindow). • The maximum number of random access preambles that can be sent before a failure is declared (e.g., preambleTransMax).

[0095] According to the first embodiment described above, random access procedures can be configured separately for each specific ID (e.g., PLMN ID).

[0096] <Supplement> In each embodiment of this disclosure, the number of configurable RRC parameters (information elements) may be expanded compared to Rel. 15 / 16 / 17.

[0097] In each embodiment of this disclosure, the maximum number of configurable RRC parameters (information elements) may be specified.

[0098] <Variation> The settings / parameters for each specific ID (e.g., PLMN ID) described in each of the above embodiments are merely examples. In addition to the settings / parameters described in each of the above embodiments, any other settings / parameters may be set / notified for each specific ID (e.g., PLMN ID).

[0099] A specific ID (for example, a PLMN ID) may have a one-to-one correspondence with the settings associated with that specific ID. In other words, one specific ID may be associated with one setting.

[0100] A specific ID (e.g., a PLMN ID) may have a one-to-one correspondence with the settings associated with that ID. In other words, one setting may be associated with multiple specific IDs (e.g., a list of specific IDs).

[0101] Furthermore, in each embodiment of this disclosure, the cell on which network sharing is performed may be a specific cell. For example, the cell on which network sharing is performed may be an SCell, and network sharing may not be performed in a PCell (SpCell). Alternatively, the cell on which network sharing is performed may be a PCell (SpCell), and network sharing may not be performed in an SCell.

[0102] (Note) With respect to one embodiment of this disclosure, the following invention is added. [Note 1] A terminal comprising: a receiving unit that receives configuration information relating to random access associated with a Public Land Mobile Network (PLMN) ID contained in a specific System Information Block (SIB); and a control unit that controls two-step random access associated with the PLMN ID based on the configuration information. [Note 2] The terminal as described in Appendix 1, wherein the configuration information is at least one of the settings for message A and at least one specific parameter included in the settings for message A. [Note 3] The terminal as described in Appendix 1 or Appendix 2, wherein the configuration information is at least one of the settings for the physical uplink sharing channel (PUSCH) of message A and at least one specific parameter included in the settings for the PUSCH of message A. [Note 4] The terminal described in any of Appendix 1 to Appendix 3, wherein the configuration information is at least one of the resource settings for the physical uplink shared channel (PUSCH) of message A and at least one specific parameter included in the resource settings for the PUSCH of message A.

[0103] (Wireless communication system) The configuration of a wireless communication system according to one embodiment of this disclosure will be described below. In this wireless communication system, communication is performed using any or a combination thereof of the wireless communication methods according to the above embodiments of this disclosure.

[0104] Figure 8 shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc., as specified by the Third Generation Partnership Project (3GPP).

[0105] Furthermore, the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may 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 so on.

[0106] In EN-DC, the LTE (E-UTRA) base station (eNB) is the Master Node (MN), and the NR base station (gNB) is the Secondary Node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0107] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0108] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement and number of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.

[0109] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of Carrier Aggregation (CA) using multiple Component Carriers (CC) and Dual Connectivity (DC).

[0110] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a small cell C2 may 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 above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may fall in a frequency band higher than FR2.

[0111] Furthermore, the user terminal 20 may communicate using at least one of the following methods at each CC: Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0112] Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, if NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is the upstream station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which is the relay station, may be called an IAB node.

[0113] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0114] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0115] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. For example, 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., may be used in at least one of the downlink (DL) and uplink (UL).

[0116] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0117] In the wireless communication system 1, a Physical Downlink Shared Channel (PDSCH), a Broadcast Channel (PBCH), or a Physical Downlink Control Channel (PDCCH) may be used as the downlink channel, shared by each user terminal 20.

[0118] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), or the like, all of which are shared by each user terminal 20.

[0119] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

[0120] Lower-layer control information may be transmitted by PDCCH. The lower-layer control information may include, for example, Downlink Control Information (DCI) which includes scheduling information for at least one of PDSCH and PUSCH.

[0121] Furthermore, the DCI that schedules PDSCH may be called a DL assignment or DL ​​DCI, and the DCI that schedules PUSCH may be called a UL grant or UL DCI. Furthermore, PDSCH may be interpreted as DL data, and PUSCH may be interpreted as UL data.

[0122] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with a particular search space based on the search space configuration.

[0123] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0124] PUCCH may transmit uplink control information (UCI) which includes at least one of the following: channel state information (CSI), delivery acknowledgment (e.g., Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0125] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "Physical" may be omitted when describing various channels.

[0126] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc., may be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc., may be transmitted.

[0127] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. SS, SSB, etc., may also be called reference signals.

[0128] Furthermore, in the wireless communication system 1, the Uplink Reference Signal (UL-RS) may transmit the Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), etc. The DMRS may also be called the User-Specific Reference Signal (UE-specific Reference Signal).

[0129] (base station) Figure 9 shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, transceiver unit 120, transceiver antenna 130, and transmission line interface 140 may be provided.

[0130] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0131] The control unit 110 controls the entire base station 10. The control unit 110 can consist of a controller, control circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0132] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc., using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may also perform call processing of communication channels (setting, releasing, etc.), status management of the base station 10, management of radio resources, etc.

[0133] The transmitting / receiving unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0134] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may consist of a receiving processing unit 1212, an RF unit 122 and a measuring unit 123.

[0135] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0136] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

[0137] The transmitting / receiving unit 120 may form at least one of the transmitting beam and the receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0138] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform processing on data and control information acquired from the control unit 110, for example, at the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (e.g., RLC retransmission control), the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc., to generate a bit sequence to be transmitted.

[0139] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, such as channel coding (which may include error correction coding), modulation, mapping, filtering, discrete Fourier transform (DFT) processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, and digital-to-analog conversion, and output a baseband signal.

[0140] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

[0141] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 130.

[0142] The transmitting / receiving unit 120 (receiving processing unit 1212) may apply reception processing to the acquired baseband signal, such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, to acquire user data, etc.

[0143] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc., based on the received signal. The measurement unit 123 may also measure received power (e.g., Reference Signal Received Power (RSRP)), reception 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 be output to the control unit 110.

[0144] The transmission path interface 140 may send and receive signals (backhaul signaling) with devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0145] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0146] The transmitting / receiving unit 120 may transmit configuration information relating to random access associated with a Public Land Mobile Network (PLMN) ID, which is included in a specific system information block (SIB). The control unit 110 may use the configuration information to instruct a two-step random access associated with the PLMN ID (first embodiment).

[0147] (User terminal) Figure 10 shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0148] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0149] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0150] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 220 and the transmitting / receiving antenna 230. The control unit 210 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 220.

[0151] The transmitting / receiving unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting / receiving unit 220 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0152] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may consist of a receiving processing unit 2212, an RF unit 222 and a measuring unit 223.

[0153] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0154] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

[0155] The transmitting / receiving unit 220 may form at least one of the transmitting beam and the receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0156] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc., on data and control information acquired from the control unit 210, etc., to generate a bit sequence to be transmitted.

[0157] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion, and output a baseband signal.

[0158] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0159] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 230.

[0160] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0161] The transmitting / receiving unit 220 (receiving processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0162] The transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0163] In this disclosure, the transmitting and receiving units of the user terminal 20 may consist of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

[0164] The transmitting / receiving unit 220 may receive configuration information relating to random access associated with a Public Land Mobile Network (PLMN) ID, which is included in a specific system information block (SIB). The control unit 210 may control the two-step random access associated with the PLMN ID based on the configuration information (first embodiment).

[0165] The configuration information may consist of at least one of the settings for message A and at least one specific parameter included in the settings for message A (first embodiment).

[0166] The configuration information may be at least one of the settings for the physical uplink sharing channel (PUSCH) of message A and at least one specific parameter included in the settings for the PUSCH of message A (first embodiment).

[0167] The configuration information may be at least one of the resource settings for the physical uplink shared channel (PUSCH) of message A and at least one specific parameter included in the resource settings for the PUSCH of message A (first embodiment).

[0168] (Hardware configuration) The block diagrams used in the description of the above embodiments show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may also be realized by combining the above one device or the above multiple devices with software.

[0169] Here, functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission may be called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0170] For example, a base station, user terminal, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 11 is a diagram showing an example of the hardware configuration of a base station and user terminal according to one embodiment. The base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0171] In this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured to omit some of the devices.

[0172] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, processing may be performed by one processor, or by two or more processors simultaneously, sequentially, or by other means. Note that processor 1001 may be implemented using one or more chips.

[0173] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations and control communication via the communication device 1004, or to control at least one of the reading and writing of data in the memory 1002 and storage 1003.

[0174] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0175] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be implemented similarly.

[0176] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. Memory 1002 may also be called a register, cache, or main memory. Memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of this disclosure.

[0177] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital multipurpose disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be called an auxiliary storage device.

[0178] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitting / receiving unit 120 (220), transmitting / receiving antenna 130 (230), etc., may be implemented by the communication device 1004. The transmitting / receiving unit 120 (220) may be implemented with physically or logically separated implementations of a transmitting unit 120a (220a) and a receiving unit 120b (220b).

[0179] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0180] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0181] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0182] (modified version) In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0183] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0184] Here, the neuralelogy may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neuralelogy may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, or specific windowing processes performed by the transceiver in the time domain.

[0185] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). Alternatively, a slot may be a time unit based on neurology.

[0186] A slot may include multiple mini-slots. Each mini-slot may consist of one or more symbols in the time domain. Mini-slots may also be called sub-slots. Mini-slots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be called a PDSCH (PUSCH) mapping type B.

[0187] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0188] For example, one subframe may be called TTI, multiple consecutive subframes may be called TTI, or one slot or one mini-slot may be called TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Note that the unit representing TTI may be called a slot, mini-slot, etc., instead of a subframe.

[0189] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0190] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0191] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

[0192] A TTI with a time length of 1 ms may also be called a normal TTI (TTI in 3GPP Rel.8-12), a long TTI, a normal subframe, a long subframe, or a slot. A TTI shorter than a normal TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini slot, a sub slot, or a slot.

[0193] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0194] A Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0195] Furthermore, an RB may contain one or more symbols in the time domain and may have the length of one slot, one minislot, one subframe, or one TTI. Each TTI, subframe, etc., may consist of one or more resource blocks.

[0196] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0197] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0198] A Bandwidth Part (BWP) (also called a partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs may be defined and numbered within a BWP.

[0199] A BWP may include UL BWPs (BWPs for UL) and DL BWPs (BWPs for DL). One or more BWPs may be configured within a single carrier for a UE.

[0200] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0201] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative examples. For instance, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots within a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0202] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or corresponding other information. For example, wireless resources may be indicated by a predetermined index.

[0203] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements that use these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0204] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0205] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0206] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

[0207] Information notification is not limited to the embodiments described herein and may be carried out by other means. For example, information notification in this disclosure may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof).

[0208] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Element (CE).

[0209] Furthermore, notification of the specified information (for example, notification that "X is the case") is not limited to explicit notification, but may also be made implicitly (for example, by not providing notification of the specified information or by providing notification of other information).

[0210] The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (for example, a comparison with a predetermined value).

[0211] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0212] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0213] The terms “system” and “network” as used in this disclosure may be used interchangeably. “Network” may also mean the equipment included in the network (e.g., base stations).

[0214] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "quasi-co-location (QCL)," "transmission configuration indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit 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," and "panel" may be used interchangeably.

[0215] In this disclosure, terms such as "Base Station (BS)", "wireless 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", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0216] A base station can house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0217] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform a control / operation based on said information.

[0218] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0219] A mobile station may also be called a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate term.

[0220] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may also be a device mounted on a moving object, the moving object itself, etc.

[0221] The term "mobile object" refers to any movable object, regardless of its speed, and naturally includes cases where the mobile object is stationary. Examples of such mobile objects include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and items carried on them. Furthermore, such mobile objects may be autonomously driven objects operating based on operational commands.

[0222] The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0223] Figure 12 shows an example of a vehicle according to one embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift 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 rotation speed sensor 51, a pneumatic pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0224] The drive unit 41 consists of, for example, at least one of an engine, a motor, or an engine-motor hybrid. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer 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.

[0225] The electronic control unit 49 consists of a microprocessor 61, memory (ROM, RAM) 62, and communication ports (e.g., input / output (IO) ports) 63. Signals from various sensors 50-58 installed in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0226] Signals from various sensors 50-58 include current signals from current sensor 50 for sensing motor current, rotational speed signals of front wheels 46 / rear wheels 47 acquired by rotational speed sensor 51, air pressure signals of front wheels 46 / rear wheels 47 acquired by air pressure sensor 52, vehicle speed signals acquired by vehicle speed sensor 53, acceleration signals acquired by acceleration sensor 54, accelerator pedal depression signal of accelerator pedal 43 acquired by accelerator pedal sensor 55, brake pedal depression signal of brake pedal 44 acquired by brake pedal sensor 56, operation signals of shift lever 45 acquired by shift lever sensor 57, and detection signals for detecting obstacles, vehicles, pedestrians, etc., acquired by object detection sensor 58.

[0227] The information service unit 59 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, displays, television, and radio, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via a communication module 60 or the like to provide various types of information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0228] The information service unit 59 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0229] The driver assistance system unit 64 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Unit (IMU), Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driver assistance functions or autonomous driving functions.

[0230] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 sends and receives data (information) via the communication port 63 to the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 provided in the vehicle 40.

[0231] 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, it can send and receive various types of information to and from external devices via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Alternatively, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 (it may function as at least one of the base station 10 and the user terminal 20).

[0232] The communication module 60 may 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 said signals, and information based on input from an external source (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above input.

[0233] The communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 installed in the vehicle. The information service unit 59 may also be called an output unit, which outputs information (for example, it outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 60).

[0234] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, various sensors 50-58, etc., which are provided in the vehicle 40.

[0235] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, uplink channel and downlink channel may be interpreted as sidelink channel.

[0236] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station 10 may be configured to have the same functions as the user terminal 20 described above.

[0237] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes with base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0238] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements in an exemplary order and are not limited to that specific order.

[0239] Each aspect / embodiment described in this disclosure includes 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 (where x is, for example, an integer or decimal)), 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®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), and IEEE This may apply to systems utilizing 802.20, Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, as well as next-generation systems that are extended, modified, created, or defined based on these. It may also apply to combinations of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0240] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0241] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0242] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to include judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0243] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0244] Furthermore, "judgment (decision)" can be considered as "judging (deciding)" something like resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can be considered as "judging (deciding)" something about an action.

[0245] Furthermore, "judgment (decision)" can be replaced with "assuming," "expecting," or "considering."

[0246] The term "maximum transmit power" as used in this disclosure may mean the maximum transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0247] As used in this disclosure, the terms “connected,” “coupled,” and any variations thereof mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be replaced with “access.”

[0248] In this disclosure, when two elements are connected, they can be considered to be “connected” or “coupled” to each other using one or more wires, cables, printed electrical connections, etc., and, in some non-exclusive and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, or optical domain (both visible and invisible).

[0249] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0250] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0251] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0252] In this disclosure, terms such as "less than or equal to," "less than," "greater than or equal to," "more than," and "equal to" may be interpreted interchangeably. In addition, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees. Furthermore, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees, by adding "i-th" (where i is any integer) to the expression (for example, "highest" may be interpreted interchangeably with "i-th highest").

[0253] In this disclosure, "of," "for," "regarding," "related to," and "associated with" may be interpreted as being interchangeable.

[0254] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The invention described herein can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined in the claims. Therefore, the descriptions herein are for illustrative purposes only and do not imply any limitation on the invention described herein.

Claims

1. A receiving unit that receives configuration information related to random access associated with a Public Land Mobile Network (PLMN) ID contained in a specific System Information Block (SIB), The system includes a control unit that controls two-step random access associated with the PLMN ID based on the aforementioned configuration information, The configuration information is a terminal comprising at least one of the following: the configuration of the physical uplink sharing channel (PUSCH) of message A; at least one specific parameter included in the PUSCH configuration of message A; the resource configuration of the PUSCH of message A; and at least one specific parameter included in the resource configuration of the PUSCH of message A.

2. The steps include receiving configuration information regarding random access associated with a Public Land Mobile Network (PLMN) ID, which is contained in a specific System Information Block (SIB), The step of controlling two-step random access associated with the PLMN ID based on the aforementioned configuration information, A wireless communication method for a terminal, wherein the configuration information is at least one of the following: the configuration of the physical uplink sharing channel (PUSCH) of message A; at least one specific parameter included in the configuration of the PUSCH of message A; the resource configuration of the PUSCH of message A; and at least one specific parameter included in the resource configuration of the PUSCH of message A.

3. A transmission unit that transmits configuration information related to random access associated with a Public Land Mobile Network (PLMN) ID contained in a specific System Information Block (SIB), The system includes a control unit that uses the aforementioned configuration information to instruct a two-step random access associated with the PLMN ID, The base station wherein the configuration information is at least one of the following: the setting of the physical uplink sharing channel (PUSCH) of message A; at least one specific parameter included in the setting of the PUSCH of message A; the resource setting of the PUSCH of message A; and at least one specific parameter included in the resource setting of the PUSCH of message A.

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