Terminal, base station, wireless communication system and wireless communication method

Abstract

The terminal comprises: a receiving unit which, when configuration authorization for multiple cells is configured in a cell group, receives, via a physical downlink control channel, an information element indicating at least any one of activation and release of at least one configured configuration authorization; and a sending unit which, in response to receiving the information element via the physical downlink control channel, sends a configuration authorization confirmation for multiple cells.

Description

Technical Field

[0001] The present invention relates to a terminal and a wireless communication method. Background Art

[0002] The 3rd Generation Partnership Project (3GPP) has standardized Long Term Evolution (LTE) and is promoting the standardization of LTE-Advanced (hereinafter referred to as LTE, including LTE-Advanced) to further accelerate LTE. It is also promoting the standardization of the fifth-generation mobile communication system (hereinafter also referred to as 5G, New Radio (NR), or Next Generation (NG)). Furthermore, it is promoting the standardization of mobile communication methods beyond 5G (sometimes referred to as 6G, beyond 5G, etc., but not limited to these terms).

[0003] In LTE and NR, a scheduling method (Configured Grant) is known for pre-allocating resources for the PUSCH (Physical Uplink Shared Channel) transmitted from the UE to the base station. In Release 15, a single Configured Grant was supported for a maximum of one cell in a cell group, but in Release 16, Multiple Configured Grants (Multiple Configured Grants) are supported for multiple cells in a cell group.

[0004] Regarding Configured Grant, it is known that there is a mechanism (Configured Grant Type 2) that configures the Configured Grant through RRC (Radio Resource Control) and activates or releases the Configured Grant through PDCCH (Physical Downlink Control Channel). In Configured Grant Type 2, the UE sends a Configured Grant Confirmation to the base station. In Single Configured Grant, a Configured Grant Confirmation for one cell is specified, and in Multiple Configured Grants, it is negotiated and agreed to import Configured Grant Confirmations for multiple cells (for example, non-patent documents 1 and 2).

[0005] Prior art literature

[0006] Non-patent literature

[0007] Non-Patent Document 1: 3GPP TS 38.321 v15.8.0

[0008] Non-Patent Document 2: “MAC Running CR for NR IIOT,” R2-1916352, 3GPP TSG-RAN2 Meeting #108, November 2019 Summary of the Invention

[0009] In the above-mentioned technology, only the introduction of Configured Grant Confirmation for multiple cells is negotiated and agreed upon, and it is necessary to study when the Configured Grant Confirmation for multiple cells should be sent.

[0010] The terminal involved in the first method has: a receiving unit, which receives, via a physical downlink control channel, an information element indicating at least any one of activation and release of at least one configured configuration authorization when configuration authorization for multiple cells is configured in a cell group; and a sending unit, which sends a configuration authorization confirmation for multiple cells in response to receiving the information element via the physical downlink control channel.

[0011] The wireless communication method involved in the second embodiment has the following steps: when configuration authorizations for multiple cells are configured in a cell group, receiving an information element indicating at least any one of activation and release of at least one configured configuration authorization via a physical downlink control channel; and sending a configuration authorization confirmation for multiple cells in response to receiving the information element via the physical downlink control channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a diagram schematically illustrating the overall configuration of the wireless communication system 10 .

[0013] Figure 2 It is a diagram showing UE 200 according to the embodiment.

[0014] Figure 3 This is a diagram showing a base station 300 according to an embodiment.

[0015] Figure 4 This is a diagram for explaining the LCID involved in the embodiment.

[0016] Figure 5 It is a diagram for explaining Multiple configured grant confirmation involved in the embodiment.

[0017] Figure 6 It is a diagram for explaining the operation example 1 according to the embodiment.

[0018] Figure 7 This is a diagram for explaining operation example 2 according to the embodiment.

[0019] Figure 8 This is a diagram for explaining operation example 1 according to modification example 1.

[0020] Figure 9 This is a diagram for explaining operation example 2 according to modification example 1.

[0021] Figure 10 This is a diagram for explaining an operation example according to Modification Example 2.

[0022] Figure 11 This is a diagram for explaining the operation example 1 according to the modification example 3.

[0023] Figure 12 This is a diagram for explaining the second operation example according to the third modification example.

[0024] Figure 13 This is a diagram showing an example of the hardware configuration of the UE 200 or the base station 300 according to the embodiment. DETAILED DESCRIPTION

[0025] Hereinafter, the embodiment will be described with reference to the drawings. In addition, the same or similar reference numerals are given to the same functions and structures, and their description will be omitted as appropriate.

[0026] [Implementation Method]

[0027] (1) Overall schematic structure of wireless communication system

[0028] Figure 1 This is a schematic diagram of the overall structure of a wireless communication system 100 according to an embodiment. Wireless communication system 100 is a wireless communication system based on Long Term Evolution (LTE) and 5G New Radio (NR). LTE may also be referred to as 4G, and NR may also be referred to as 5G. LTE and NR can be interpreted as radio access technologies (RATs). In the embodiment, LTE may be referred to as the first radio access technology, and NR may be referred to as the second radio access technology. NR may also be considered to include radio access technologies beyond 5G.

[0029] The wireless communication system 100 includes an Evolved Universal Terrestrial Radio Access Network 110 (hereinafter referred to as E-UTRAN 110), a Next Generation-Radio Access Network 120 (hereinafter referred to as NG RAN 120), and a core network 130. The wireless communication system 100 includes a terminal 200.

[0030] The E-UTRAN 110 includes an eNB 111 that is a base station according to LTE. The eNB 111 has one or more cells C11. The E-UTRAN 110 may also include two or more eNBs 111.

[0031] The NG RAN 120 includes an gNB 121, which is a 5G (NR)-compliant base station. The gNB 121 has one or more cells C21. The NG RAN 120 may also include two or more gNBs 121.

[0032] The term "cell" can be used to refer to the function of eNB 111 or gNB 121, that is, the function of communicating with terminal 200. The term "cell" can also be used to refer to the coverage area of ​​eNB 111 or gNB 121. Each cell can be distinguished by the frequency used in each cell. E-UTRAN 110 and NG RAN 120 (which can also be eNB 111 or gNB 121) can be simply referred to as a radio access network, or as an access network.

[0033] eNB 111, gNB 121 and terminal 200 can support carrier aggregation (CA) using multiple component carriers (CCs), and can also support dual connectivity (DC) that simultaneously transmits component carriers between multiple NG-RAN nodes and terminal 200.

[0034] The eNB 111, gNB 121, and terminal 200 perform wireless communication via radio bearers. Radio bearers may include signaling radio bearers (SRBs) and data radio bearers (DRBs).

[0035] The terminal 200 is not particularly limited, and may also be referred to as a “mobile station (Mobile Station: MS)” or a “user equipment (User Equipment: UE)”. Hereinafter, the terminal 200 is referred to as UE 200 .

[0036] The core network 130 includes the Evolved Packet Core (EPC) based on LTE and the 5G Core based on 5G (NR). The EPC includes network nodes 131 based on LTE (e.g., the MME (Mobility Management Entity)). The 5G Core includes network nodes 132 based on 5G (NR) (e.g., the AMF (Access and Mobility Management Function)). The MME and AMF are network nodes that perform control plane-related processing. Nodes may also be referred to as functions.

[0037] The interface between eNB 111 and the MME and the interface between gNB 121 and the MME may be referred to as the S1 interface. The interface between gNB 121 and the AMF may be referred to as the NG interface or the N2 interface. The interface between eNBs 111 and 111 and the interface between eNB 111 and gNB 121 may be referred to as the X2 interface. The interface between gNBs 121 and 121 may be referred to as the Xn interface. The interface between the MME and the AMF may be referred to as the N26 interface.

[0038] (2) Functional block structure of the terminal

[0039] Figure 2 2 is a diagram showing a functional block structure of a UE 200 according to an embodiment of the present invention. Figure 2 As shown, UE 200 includes a receiving unit 210 , a transmitting unit 220 , and a control unit 230 .

[0040] The receiving unit 210 receives various information from the network (for example, eNB 111 or gNB 121). For example, the receiving unit 210 receives an RRC (Radio Resource Connection) message. The RRC message may include an information element (hereinafter referred to as Multiple configured grant configuration) for configuring configuration grants (hereinafter referred to as CGs; Configured Grants) for multiple cells in a cell group. The configured CGs can be identified by identification information (hereinafter referred to as ConfiguredGrantIndex). ConfiguredGrantIndex is a CG ID that is unique to each MAC entity and can be configured by RRC. The receiving unit 210 receives information elements via PDCCH (Physical Downlink Control Channel). The information elements received via PDCCH include information elements indicating at least one of activation and release of at least one configured CG (hereinafter referred to as DCI; Downlink Control Information). DCI may include an information element indicating activation of a configured CG (Separate activation for each Type 2CG). The DCI may include an information element indicating the release of an activated CG (Separate release for each Type 2CG). Separate release for each Type 2CG may also be referred to as Separate deactivation foreach Type 2CG. The DCI may also include an information element indicating the activation of multiple configured CGs (Jointactivation for each Type 2CG). The DCI may include an information element indicating the release of multiple activated CGs (Joint release for each Type 2CG. Joint release for each Type 2CG may also be referred to as Joint deactivation for each Type 2CG. In addition, the term "configuration" may be replaced by "setting". For example, configuration authorization may be replaced by setting authorization, and configuration authorization confirmation may be replaced by setting authorization confirmation.

[0041] The sending unit 220 sends various information to the network (for example, eNB 111 or gNB 121). For example, the sending unit 220 sends a configuration authorization confirmation based on the reception of DCI via PDCCH. The configuration authorization confirmation may include a configured grant confirmation that confirms at least any one of the activation and release of a CG. The configuration authorization confirmation may also include a multiple entry configured grant confirmation that confirms at least any one of the activation and release of multiple CGs. The sending unit 220 sends PUSCH (Physical Uplink Shared Channel) through the activated CG(s).

[0042] Among them, the configured CG(s) are wireless resources that can send PUSCH. The activated CG(s) are wireless resources used for sending PUSCH. Separate activation and joint activation can be identified by the HPN (HARQ (Hybrid Automatic Repeat Request: Hybrid Automatic Repeat Request) Number) contained in the DCI. Separate release and joint release can also be identified by the HPN (HARQ (Hybrid Automatic Repeat Request) Number) contained in the DCI.

[0043] The control unit 230 controls the operation of the UE 200. For example, the control unit 230 controls the sending of the multiple entry configured grant confirmation. The control unit 230 can also control the sending of the configured grant confirmation.

[0044] (3) Functional block structure of base station

[0045] Figure 3 1 is a diagram showing a functional block structure of a base station 300 according to an embodiment. In the embodiment, the above-mentioned eNB 111 and gNB 121 may have the same structure. Therefore, the base station 300 will be described without distinguishing between the eNB 111 and gNB 121. Figure 3 As shown, the base station 300 includes a receiving unit 310 , a transmitting unit 320 , and a control unit 330 .

[0046] The receiving unit 310 receives various information from the UE 200. For example, the receiving unit 310 receives the configured grant confirmation described above. The receiving unit 310 receives the PUSCH described above.

[0047] The transmitting unit 320 transmits various information to the UE 200. For example, the transmitting unit 320 transmits the aforementioned RRC message. The transmitting unit 320 transmits the aforementioned information element via the PDCCH.

[0048] The control unit 330 controls the operation of the base station 300. For example, the control unit 330 executes a process of configuring configuration grants (hereinafter referred to as CGs; Configured Grants) for configuring a plurality of cells in one cell group.

[0049] (4) Configure authorization confirmation

[0050] Figure 4 1 is a diagram showing LCID (Logical Channel Identifier) ​​according to an embodiment of the present invention. Figure 4 As shown, the multiple entry configured grant confirmation can be identified by the index of LCID=51 contained in the MAC subheader. The configured grant confirmation can be identified by the index of LCID=55 contained in the MAC subheader.

[0051] (5)Configure authorization confirmation

[0052] Figure 5 The configuration authorization confirmation involved in the implementation method is explained. Since the configured grant confirmation is a configuration authorization confirmation related to one CG, its description is omitted. Here, the multiple entry configured grant confirmation is explained.

[0053] like Figure 5 As shown, multiple entry configured grant confirmation contains multiple CGs i CG i Indicates whether the PDCCH (DCI) indicates that the ConfiguredGrantIndex is received. iThe field of "Activation or release (also called deactivation) of the CG". The PDCCH (DCI) shows that the ConfiguredGrantIndex is received i In the case of activation or release (also called inactivation) of CG, i "1" is set in the field. Indicates that ConfiguredGrantIndex is not received on PDCCH (DCI). i In the case of activation or release (also called inactivation) of CG, i Set "0" in the field.

[0054] (6) Action Example 1

[0055] The following describes an operation example 1 according to the embodiment, wherein Separate activation for each Type 2CG is described.

[0056] like Figure 6 As shown, in step S10, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0057] In step S11, the base station 300 transmits an information element to the UE 200 via the PDCCH. The information element includes DCI indicating Separate activation.

[0058] In step S12, UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0059] That is, in a case where multiple CGs are configured, even in a case where activation of one CG is instructed, UE 200 transmits multiple entry configured grant confirmation (LCID=51) to base station 300 .

[0060] exist Figure 6Although not specifically mentioned in the specification, when multiple CGs are configured and activated, UE 200 can send multiple entry configured grant confirmation to base station 300. In other words, when multiple CGs are configured but only one CG is activated, UE 200 can send configured grant confirmation (LCID=55) to base station 300 instead of sending multiple entry configured grant confirmation (LCID=51).

[0061] (7) Action Example 2

[0062] The following describes an example of operation 2 according to the embodiment. Here, Separate release for each Type 2CG is described.

[0063] like Figure 7 As shown, in step S20, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0064] In step S21, at least one CG(s) is activated. In action example 2, the release of the CG is mainly described, so there is no particular limitation on the activation method and the sending of the configuration authorization confirmation.

[0065] In step S22, the base station 300 transmits an information element to the UE 200 via the PDCCH. The information element includes DCI indicating Separate release.

[0066] In step S23, UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0067] That is, in a case where multiple CGs are configured, even in a case where the release of one CG is instructed, the UE 200 transmits a multiple entry configured grant confirmation (LCID=51) to the base station 300 .

[0068] Figure 7Although not specifically mentioned in the specification, when multiple CGs are configured and activated, the UE 200 can send multiple entry configured grant confirmation (LCID=51) to the base station 300. In other words, when multiple CGs are configured but only one CG is activated, the UE 200 can send configured grant confirmation (LCID=55) to the base station 300 instead of sending multiple entry configured grant confirmation (LCID=51).

[0069] (8) Actions and effects

[0070] In the embodiment, when CGs for multiple cells are configured in a cell group, UE 200 sends multiple entry configured grant confirmation (LCID=51). According to this structure, when both configured grant confirmation and multiple entry configured grant confirmation (LCID=51) are specified, the conditions for sending multiple entry configured grant confirmation (LCID=51) are clarified.

[0071] [Change Example 1]

[0072] The following describes a modified example 1 of the embodiment. The following mainly describes the differences from the embodiment. In modified example 1, joint activation for each Type 2CG and joint release for each Type 2CG are described.

[0073] (1) Action Example 1

[0074] The following describes operation example 1 according to modification example 1. Here, joint activation for each Type2CG is described.

[0075] like Figure 8 As shown, in step S30, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0076] In step S31, the base station 300 transmits an information element to the UE 200 via the PDCCH. The information element includes DCI indicating Joint activation.

[0077] In step S32, UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0078] That is, when multiple CGs are configured and activation of the multiple CGs is instructed, UE 200 sends multiple entry configured grant confirmation (LCID=51) to base station 300.

[0079] exist Figure 8 Although not specifically mentioned in the specification, Modification Example 1 can be combined with the above-mentioned embodiment. That is, when multiple CGs are configured, UE 200 can send multiple entry configured grant confirmation (LCID=51) to base station 300 regardless of whether activation of one CG is indicated or activation of multiple CGs is indicated.

[0080] However, Modification Example 1 is not limited thereto. When multiple CGs are configured, UE 200 sends a configured grant confirmation (LCID=55) to base station 300 when activation of one CG is indicated. Even when activation of multiple CGs is indicated, UE 200 may send a multiple entry configured grant confirmation (LCID=51) to base station 300.

[0081] (2) Action Example 2

[0082] The following describes an operation example 2 related to Modification Example 1. Here, Joint release for each Type2CG is described.

[0083] like Figure 9 As shown, in step S40, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0084] In step S41, at least two CGs are activated. In action example 2, the release of CG is mainly described, so there is no particular limitation on the activation method and the sending of the configuration authorization confirmation.

[0085] In step S42, the base station 300 transmits an information element to the UE 200 via the PDCCH. The information element includes DCI indicating a joint release.

[0086] In step S43, the UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0087] That is, when multiple CGs are configured and the release of the multiple CGs is instructed, the UE 200 sends a multiple entry configured grant confirmation (LCID=51) to the base station 300 .

[0088] exist Figure 9 Although not specifically mentioned in the specification, Modification Example 1 can be combined with the above-mentioned embodiment. That is, when multiple CGs are configured, UE 200 can send multiple entry configured grant confirmation (LCID=51) to base station 300 regardless of whether the release of one CG is indicated or the release of multiple CGs is indicated.

[0089] However, Modification Example 1 is not limited to this. When multiple CGs are configured, if the release of one CG is indicated, UE 200 sends a configured grant confirmation (LCID=55) to base station 300. Even if the release of multiple CGs is indicated, UE 200 may send a multiple entry configured grant confirmation (LCID=51) to base station 300.

[0090] [Change Example 2]

[0091] The following describes a second modification of the embodiment. The following mainly describes the differences from the embodiment. In the second modification, the following describes a case where a configured grant confirmation is used for CG(s) activation and a configured grant confirmation is used for CG(s) release.

[0092] like Figure 10 As shown, in step S50, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0093] In step S51, the base station 300 transmits an information element to the UE 200 via the PDCCH. The information element includes DCI indicating Separate activation.

[0094] In step S52, UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0095] That is, in a case where a plurality of CGs are configured, even in a case where activation of one CG is instructed, UE 200 transmits configured grant confirmation (LCID=55) to base station 300 .

[0096] In addition, the processing of steps S51 to S52 may be repeated.

[0097] In step S53, the base station 300 sends an information element to the UE 200 via the PDCCH. The information element may include DCI indicating a separate release or a joint release.

[0098] In step S54, the UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0099] That is, when multiple CGs are configured, when the activation of one CG is indicated, UE 200 sends configured grant confirmation (LCID=55) to the base station 300, and when the release of one or more CGs is indicated, UE 200 sends multiple entry configured grant confirmation (LCID=51) to the base station 300.

[0100] [Change Example 3]

[0101] The following describes Variation 3 of the embodiment. The following primarily describes the differences from the embodiment. Variation 3 describes the situation where information elements are received via two or more PDCCHs within a predetermined time. The predetermined time can be defined by one or more symbols, one or more time slots, or one or more subframes. The predetermined time can be considered the PDCCH reception window.

[0102] (1) Action Example 1

[0103] The following describes operation example 1 according to modification example 3. Here, Separate activation for each Type 2CG is described.

[0104] like Figure 11 As shown, in step S60, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0105] In step S61, the base station 300 transmits information elements to the UE 200 via two or more PDCCHs within a predetermined time. The information elements via the two or more PDCCHs each include a DCI indicating Separate activation.

[0106] In step S62, UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0107] That is, when multiple CGs are configured and the activation of more than two CGs is indicated by DCI of two or more PDCCHs received within a predetermined time, UE 200 sends multiple entry configured grant confirmation (LCID=51) to base station 300. In other words, when multiple CGs are configured, when the activation of one CG is indicated by DCI of one PDCCH received within a predetermined time, UE 200 can send configured grant confirmation (LCID=55) to base station 300.

[0108] (2) Action Example 2

[0109] The following describes Operation Example 2 according to Modification Example 3. Here, Separate release for each Type 2CG is described.

[0110] like Figure 12 As shown, in step S70, the base station 300 sends an RRC message to the UE 200. The RRC message includes a Multiple configured grant configuration. The UE 200 configures CGs for multiple cells in a cell group.

[0111] In step S71, at least one CG(s) is activated. In action example 2, the release of the CG is mainly described, so there is no particular limitation on the activation method and the sending of the configuration authorization confirmation.

[0112] In step S72, the base station 300 transmits information elements to the UE 200 via two or more PDCCHs within a predetermined time. The information elements transmitted via the two or more PDCCHs each include a DCI indicating a separate release.

[0113] In step S73, the UE 200 sends a Figure 5 The multiple entry configured grant confirmation (LCID=51) is shown.

[0114] That is, when multiple CGs are configured and the release of more than two CGs is indicated by DCI of two or more PDCCHs received within a predetermined time, UE 200 sends multiple entry configured grant confirmation (LCID=51) to base station 300. In other words, when multiple CGs are configured, when the release of one CG is indicated by DCI of one PDCCH received within a predetermined time, UE 200 can send configured grant confirmation (LCID=55) to base station 300.

[0115] [Change Example 4]

[0116] A fourth modification of the embodiment will be described below, with the differences from the embodiment being mainly described below.

[0117] In Modification 4, whether to send multiple entry configured grant confirmation (LCID=51) or configured grant confirmation (LCID=55) is determined according to the installation of UE 200. In this case, base station 300 distinguishes the type of configuration grant confirmation received from UE 200 by referring to the LCID.

[0118] [Other embodiments]

[0119] As mentioned above, although the content of this invention was demonstrated based on embodiment, this invention is not limited to these descriptions, Various deformation|transformation and improvement are possible for those skilled in the art, as is obvious.

[0120] The block diagram used in the description of the above embodiment ( Figure 2 and Figure 3 ) shows blocks in units of functions. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using a device that is physically or logically combined, or it can be implemented by connecting two or more physically or logically separated devices directly or indirectly (for example, using wired or wireless connections) and using these multiple devices. The functional block can also be implemented by combining software with the above-mentioned one device or the above-mentioned multiple devices.

[0121] Functionally, these include, but are not limited to, judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. For example, a functional block (structural unit) that enables the transmission function is called a transmitting unit or a transmitter. In short, as described above, there is no particular limitation on the implementation method.

[0122] In addition, the above-mentioned eNB 111, gNB 121 and UE 200 (the device) can also function as a computer that processes the wireless communication method of the present disclosure. Figure 13 FIG. 1 is a diagram showing an example of the hardware structure of the device. Figure 13 As shown, the device may also be configured as a computer device including a processor 1001 , a memory 1002 (memory), a storage 1003 (storage), a communication device 1004 , an input device 1005 , an output device 1006 , and a bus 1007 .

[0123] In the following description, the word "device" can be replaced with "circuit," "device," "unit," etc. The hardware structure of the device may include one or more of the devices shown in the figures, or may exclude some of the devices.

[0124] Each functional block of the device (refer to Figure 3 ) can be implemented by any hardware element or combination of hardware elements of the computer device.

[0125] In addition, each function in the device is implemented by the following method: predetermined software (program) is read into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls the communication of the communication device 1004 or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0126] The processor 1001 controls the entire computer by, for example, executing an operating system. The processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control unit, a calculation unit, registers, and the like.

[0127] In addition, the processor 1001 reads a program (program code), a software module, or data from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and performs various processes accordingly. As a program, a program that causes the computer to perform at least a part of the actions described in the above embodiment is used. In addition, the various processes described above can be performed by one processor 1001, or by two or more processors 1001 simultaneously or sequentially. The processor 1001 can also be installed on one or more chips. In addition, the program can also be sent from the network via a telecommunications line.

[0128] Memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a random access memory (RAM). Memory 1002 may also be referred to as a register, a cache, or a main memory (main storage device). Memory 1002 can store programs (program code), software modules, and the like that can execute the method according to an embodiment of the present disclosure.

[0129] The memory 1003 is a computer-readable recording medium, and may be composed of, for example, at least one of an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a floppy disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a Floppy (registered trademark) disk, a magnetic strip, and the like. The memory 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, other appropriate media such as a database, a server, or the like that includes at least one of the memory 1002 and the memory 1003.

[0130] The communication device 1004 is hardware (transceiver) used for communication between computers via at least one of a wired network and a wireless network, and may also be called a network device, a network controller, a network card, a communication module, etc.

[0131] For example, the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0132] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, LED light, etc.). Alternatively, the input device 1005 and the output device 1006 may be integrally formed (e.g., a touch panel).

[0133] Furthermore, the processor 1001 and the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or may be configured using separate buses for each device.

[0134] Furthermore, the device may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a field-programmable gate array (FPGA), and some or all of the functional blocks may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0135] In addition, the notification of information is not limited to the form / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information: DCI), uplink control information (Uplink Control Information: UCI)), high-layer signaling (e.g., RRC signaling, medium access control (Medium Access Control: MAC) signaling, broadcast information (Master Information Block (Master Information Block: MIB), System Information Block (System Information Block: SIB)), other signals or a combination thereof. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0136] Each form / embodiment described in this disclosure may also be applied to at least one of Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), systems using other appropriate systems, and next-generation systems extended therefrom. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G) may also be applied.

[0137] The processing procedures, timings, and flows of each form / implementation described in this disclosure may be performed in a different order unless there is a conflict. For example, the methods described in this disclosure use an illustrative order to present the elements of various steps, but are not limited to the specific order presented.

[0138] In the present disclosure, specific actions performed by a base station are sometimes performed by its upper node depending on the situation. In a network consisting of one or more network nodes including a base station, it is obvious that various actions performed to communicate with a terminal can be performed by at least one of the base station and other network nodes other than the base station (for example, considering an MME or S-GW, but not limited to these). In the above, the case where there is only one other network node other than the base station is illustrated, but the other network node may also be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0139] Information, signals (information), etc. can be output from a higher layer (or lower layer) to a lower layer (or higher layer), or can be input or output via multiple network nodes.

[0140] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0141] The determination may be made using a value represented by one bit (0 or 1), a Boolean value (Boolean: true or false), or a comparison of numerical values ​​(for example, comparison with a predetermined value).

[0142] The various forms / implementations described in this disclosure may be used separately or in combination, and may be switched depending on the execution. Furthermore, notification of scheduled information is not limited to being performed explicitly (e.g., a notification of "yes X") but may also be performed implicitly (e.g., not notifying the scheduled information).

[0143] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be interpreted broadly to refer to instructions, sets of instructions, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0144] Furthermore, software, commands, information, and the like may be transmitted and received via a transmission medium. For example, if software is transmitted from a web page, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0145] The information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be referred to in the entire description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0146] In addition, the terms used in this disclosure and those necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

[0147] The terms "system" and "network" used in this disclosure may be used interchangeably.

[0148] In addition, the information, parameters, etc. described in this disclosure may be represented by absolute values, relative values ​​relative to predetermined values, or other corresponding information. For example, wireless resources may also be indicated by indexes.

[0149] The names used for the above parameters are not limiting in any way. Furthermore, the formulas and the like using these parameters may sometimes differ from those explicitly stated in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by appropriate names, and the various names assigned to these various channels and information elements are not limiting in any way.

[0150] In this disclosure, terms such as "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", and "component carrier" are used interchangeably. Base stations are also sometimes referred to as macrocells, small cells, femtocells, and picocells.

[0151] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the base station's overall coverage area can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (for example, a small base station (Remote Radio Head: RRH) for indoor use).

[0152] The terms "cell" or "sector" refer to a portion or the entirety of a coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0153] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (user terminal)”, “user equipment (UE)”, and “terminal” may be used interchangeably.

[0154] For mobile stations, those skilled in the art sometimes also use the following terms to refer to them: subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate terms.

[0155] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may be a means of transportation (e.g., a car, an airplane, etc.), a mobile body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0156] In addition, the base station in the present disclosure can also be replaced by a mobile station (user terminal, the same below). For example, regarding a structure in which the communication between a base station and a mobile station is replaced by communication between multiple mobile stations (for example, it can also be called device-to-device (Device-to-Device: D2D), vehicle-to-everything (Vehicle-to-Everything: V2X), etc.), the various forms / implementations of the present disclosure can also be applied. In this case, it is also possible to set a structure in which the mobile station has the functions of the base station. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. can also be replaced by side channels.

[0157] Likewise, the mobile station in the present disclosure may be replaced by a base station. In this case, the base station may have the same functions as the mobile station.

[0158] A radio frame may be composed of one or more frames in the time domain. One or more frames in the time domain may also be referred to as subframes.

[0159] A subframe may also be composed of one or more time slots in the time domain. A subframe may be of a fixed time length (eg, 1 ms) that is independent of a parameter set (numerology).

[0160] A parameter set may also be a communication parameter applied to at least one of the transmission and reception of a signal or channel. For example, a parameter set may represent at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by the transceiver in the frequency domain, specific windowing performed by the transceiver in the time domain, and the like.

[0161] In the time domain, a slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) A slot may be a time unit based on a parameter set.

[0162] A time slot may also contain multiple mini-slots. Each mini-slot may consist of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may also consist of fewer 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 PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as PDSCH (or PUSCH) mapping type B.

[0163] Radio frame, subframe, time slot, mini-time slot, and symbol all represent time units for signal transmission. Radio frame, subframe, time slot, mini-time slot, and symbol may also be referred to by other corresponding names.

[0164] For example, a subframe can also be called a transmission time interval (TTI), multiple consecutive subframes can also be called a TTI, and a slot or a mini-slot can also be called a TTI. That is, at least one of a subframe and a TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. Furthermore, the unit representing a TTI can be a slot, a mini-slot, or the like, rather than a subframe.

[0165] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communications. For example, in the LTE system, a base station schedules each user terminal by allocating radio resources (such as the frequency bandwidth and transmit power available to each user terminal) in units of TTI. The definition of TTI is not limited to this.

[0166] A TTI can be a unit of time for transmitting data packets (transport blocks), code blocks, code words, etc. after channel coding, or a unit of processing for scheduling, link adaptation, etc. Furthermore, when a TTI is assigned, the time interval (e.g., the number of symbols) to which a transport block, code block, code word, etc. is actually mapped can be shorter than the TTI.

[0167] Furthermore, when one time slot or one mini-time slot is referred to as a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-time slots) may constitute the minimum time unit for scheduling. Furthermore, the number of time slots (mini-time slots) constituting this minimum time unit for scheduling may also be controlled.

[0168] A TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a subslot, a time slot, etc.

[0169] In addition, long TTI (e.g., normal TTI, subframe, etc.) can be replaced by TTI with a time length exceeding 1ms, and short TTI (e.g., shortened TTI, etc.) can also be replaced by TTI with a TTI length smaller than that of long TTI and greater than 1ms.

[0170] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it may also contain one or more consecutive subcarriers. The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can be determined based on the parameter set.

[0171] In addition, the time domain of an RB may include one or more symbols, and may be the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may also be composed of one or more resource blocks.

[0172] In addition, one or more RBs may 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, and the like.

[0173] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0174] A bandwidth part (BWP) (also known as a fractional bandwidth) can also represent a subset of contiguous common resource blocks (RBs) for a particular parameter set within a carrier. Common RBs can also be identified by their index relative to the common reference point of the carrier. PRBs can also be defined by a BWP and numbered within that BWP.

[0175] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). For a UE, one or more BWPs may be configured within one carrier.

[0176] At least one of the configured BWPs may be activated, and the UE may not assume that it will transmit or receive predetermined signals / channels other than the activated BWP.

[0177] The above-described structures of radio frames, subframes, slots, mini-slots, and symbols are merely examples. For example, various changes may be made to the structures including the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots within a slot, the number of symbols and RBs within a slot or mini-slot, the number of subcarriers within an RB, the number of symbols within a TTI, the symbol length, and the cyclic prefix (CP) length.

[0178] The terms "connected", "coupled" or all variations of these terms are intended to indicate any direct or indirect connection or combination between two or more elements, including the situation where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The combination or connection between elements can be a physical combination or connection, a logical combination or connection, or a combination of these. For example, "access" can be used to replace "connection". In the context of the present disclosure, two elements can be considered to be "connected" or "coupled" to each other by using at least one of one or more wires, cables and printed electrical connections, and as some non-limiting and non-inclusive examples, by using electromagnetic energy such as electromagnetic energy with wavelengths in the wireless frequency domain, microwave region and light (including both visible and invisible) region.

[0179] The reference signal may be referred to as Reference Signal (RS) for short, or may be referred to as a pilot signal depending on the applied standard.

[0180] The phrase "according to" used in this disclosure does not mean "only according to" unless otherwise expressly stated. In other words, the phrase "according to" means both "only according to" and "at least according to."

[0181] The “unit” in the configuration of each of the above-mentioned devices may be replaced with a “section,” “circuit,” “device,” or the like.

[0182] Any reference to an element using the designations "first," "second," etc., as used in this disclosure, does not necessarily limit the number or order of those elements. These designations are used in this disclosure as a convenient way to distinguish between two or more elements. Therefore, a reference to a first and a second element does not imply that only two elements can be used or that the first element must precede the second element in any manner.

[0183] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, the term "or" used in this disclosure does not mean an exclusive OR.

[0184] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure also includes cases where the noun following the article is in plural form.

[0185] As used in this disclosure, terms such as “determining” and “determining” sometimes also include situations in which a variety of actions are performed. For example, “determining” and “judging” may include situations in which matters such as judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (for example, searching in a table, database or other data structure), and ascertaining are considered to have been “judged” or “determined”. In addition, “determining” and “receiving” (for example, receiving information), transmitting (for example, sending information), inputting, outputting, and accessing (for example, accessing data in a memory) are considered to have been “judged” or “determined”. In addition, “determining” and “resolving” may include situations in which matters such as selecting, choosing, establishing, and comparing are considered to have been “judged” or “determined”. That is, "judgment" and "decision" can include "judgment" and "decision" of any action. In addition, "judgment (decision)" can be replaced by "assuming (assuming)", "expecting (expecting)", and "considering (considering)".

[0186] In this disclosure, the phrase "A and B are different" can also mean "A and B are different from each other." Furthermore, the phrase can also mean "A and B are each different from C." Terms such as "separate" and "bound" can also be interpreted similarly as meaning "different."

[0187] While the present disclosure has been described in detail above, it should be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in various modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is for illustrative purposes only and does not have any limiting meaning on the present disclosure.

[0188] Description of labels:

[0189] 100…wireless communication system, 110…E-UTRAN, 111…eNB, 120…NG RAN, 121…gNB 121, 130…core network, 200…UE, 210…receiving unit, 220…transmitting unit, 230…control unit, 300…base station, 310…receiving unit, 320…transmitting unit, 330…control unit, 400…upper node, 1001…processor, 1002…memory, 1003…storage, 1004…communication device, 1005…input device, 1006…output device, 1007…bus

Claims

1. A terminal, wherein: The terminal has: a receiving unit configured to receive, via a physical downlink control channel, at least one of first downlink control information indicating activation of one of the multiple configuration grants and second downlink control information indicating release of one or more of the multiple configuration grants, when multiple configuration grants are configured; as well as a sending unit that, in response to receiving the first downlink control information, sends a configuration authorization confirmation corresponding to the multiple configuration authorizations, the configuration authorization confirmation including a field related to the configuration authorization indicated for activation, and, in response to receiving the second downlink control information, sends a configuration authorization confirmation corresponding to the multiple configuration authorizations, the configuration authorization confirmation including a field related to the configuration authorization indicated for release.

2. The terminal according to claim 1, wherein: The transmitting unit transmits the configuration grant acknowledgment when receiving downlink control information via two or more physical downlink control channels as the physical downlink control channels within a predetermined time.

3. A base station, wherein: The base station has: a transmitting unit configured to transmit, via a physical downlink control channel, at least one of first downlink control information and second downlink control information when multiple configuration grants are configured, wherein the first downlink control information indicates activation of one of the multiple configuration grants and the second downlink control information indicates release of one or more configuration grants among the multiple configuration grants; as well as a receiving unit that receives, in response to the sending of the first downlink control information, configuration authorization confirmations corresponding to the multiple configuration authorizations, the configuration authorization confirmations including fields related to the configuration authorizations indicated for activation, and receives, in response to the sending of the second downlink control information, configuration authorization confirmations corresponding to the multiple configuration authorizations, the configuration authorization confirmations including fields related to the configuration authorizations indicated for release.

4. A wireless communication system having a terminal and a base station, wherein: The terminal has: a receiving unit configured to receive, via a physical downlink control channel, at least one of first downlink control information indicating activation of one of the multiple configuration grants and second downlink control information indicating release of one or more of the multiple configuration grants, when multiple configuration grants are configured; as well as a transmitting unit, in response to receipt of the first downlink control information, transmitting a configuration authorization confirmation corresponding to the plurality of configuration grants, the configuration authorization confirmation including a field related to the configuration grants instructed to be activated; and, in response to receipt of the second downlink control information, transmitting a configuration authorization confirmation corresponding to the plurality of configuration grants, the configuration authorization confirmation including a field related to the configuration grants instructed to be released, The base station includes: a transmitting unit configured to transmit at least one of the first downlink control information and the second downlink control information via the physical downlink control channel; as well as A receiving unit receives the configuration authorization confirmation.

5. A wireless communication method, wherein: The wireless communication method comprises the following steps: a receiving step of, in a case where multiple configuration grants are configured, receiving at least either one of first downlink control information and second downlink control information via a physical downlink control channel, wherein the first downlink control information indicates activation of one of the multiple configuration grants and the second downlink control information indicates release of one or more configuration grants among the multiple configuration grants; as well as A sending step, in response to the reception of the first downlink control information, sending a configuration authorization confirmation corresponding to the multiple configuration authorizations, the configuration authorization confirmation including a field related to the configuration authorization indicated for the activation, and, in response to the reception of the second downlink control information, sending a configuration authorization confirmation corresponding to the multiple configuration authorizations, the configuration authorization confirmation including a field related to the configuration authorization indicated for the release.

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