WO2020208744A1

WO2020208744A1 - User equipment and base-station device

Info

Publication number: WO2020208744A1
Application number: PCT/JP2019/015623
Authority: WO
Inventors: 高橋　秀明; 一樹武田
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-10-15

Abstract

This user equipment has: a reception unit for receiving, from a base-station device, a first radio resource control (RRC) message for making an enquiry about capabilities of the user equipment; a transmission unit which, in response to the first RCC message, transmits, to the base-station device, a second RCC message for reporting UE capabilities, inclusive of a scaling factor which is a parameter used to calculate a maximum data rate; and a communication unit which carries out communication with the base-station device on an uplink or a downlink that is scheduled within the maximum data rate calculated on the basis of the scaling factor, wherein, in the transmission unit, an identical value is assigned to scaling factors that correspond to bands that belong to the same frequency range (FR).

Description

User equipment and base station equipment

The present invention relates to a user device and a base station device in a wireless communication system.

In NR (New Radio) (also called "5G"), which is the successor system to LTE (Long Term Evolution), the requirements are a large-capacity system, high-speed data transmission speed, low delay, and simultaneous operation of many terminals. Techniques that satisfy connection, low cost, power saving, etc. are being studied (for example, Non-Patent Document 1).

In the NR wireless communication system, the TBS (Transport Block Size) that can be allocated per slot is determined to be within the maximum data rate (for example, Non-Patent Document 2). A scaling factor is used to calculate the maximum data rate. The scaling factor is reported from the user device to the base station device as UE capacity.

In the NR wireless communication system, the maximum data rate is calculated for each FR (Frequency Range). On the other hand, the scaling factor, which is a parameter used to calculate the maximum data rate, can be signaled with a different value for each band. Therefore, the maximum data rate is not shared depending on the band setting, and scheduling cannot be performed flexibly.

The present invention has been made in view of the above points, and an object of the present invention is to perform scheduling in which a maximum data rate is composed of a plurality of bands in a wireless communication system.

According to the disclosed technology, a receiver that receives a first RRC (Radio Resource Control) message inquiring about the capability of the user device from the base station device and a receiver that receives the first RRC message are used to calculate the maximum data rate as a response to the first RRC message. A transmitter that sends a second RRC message reporting UE capability, including a scaling factor that is a parameter to use, to the base station equipment and an uplink scheduled within the maximum data rate calculated based on the scaling factor. Alternatively, a user device having the base station device and a communication unit that executes communication on the downlink, and the transmission unit sets the same value for the scaling factor corresponding to a band belonging to the same FR (Frequency Range). Is provided.

According to the disclosed technology, in a wireless communication system, scheduling can be performed in which the maximum data rate is composed of a plurality of bands.

It is a figure for demonstrating the wireless communication system in embodiment of this invention. It is a sequence diagram for demonstrating the operation example in Embodiment of this invention. It is a flowchart for demonstrating the operation example in Embodiment of this invention. It is a specification change example (1) which concerns on the operation example in embodiment of this invention. It is a specification change example (2) which concerns on the operation example in embodiment of this invention. It is a figure which shows an example of the functional structure of the base station apparatus 10 in embodiment of this invention. It is a figure which shows an example of the functional structure of the user apparatus 20 in embodiment of this invention. It is a figure which shows an example of the hardware composition of the base station apparatus 10 or the user apparatus 20 in embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

Existing technology is appropriately used in the operation of the wireless communication system according to the embodiment of the present invention. However, the existing technology is, for example, an existing LTE, but is not limited to the existing LTE. Further, the term "LTE" used in the present specification shall have a broad meaning including LTE-Advanced and LTE-Advanced and later methods (eg, NR) unless otherwise specified.

Further, in the embodiment of the present invention described below, SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical) used in the existing LTE. Use terms such as random access channel). This is for convenience of description, and signals, functions, etc. similar to these may be referred to by other names. Further, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH and the like. However, even if the signal is used for NR, it is not always specified as "NR-".

Further, in the embodiment of the present invention, the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other system (for example, Flexible Duplex, etc.). Method may be used.

Further, in the embodiment of the present invention, "configuring" the radio parameter or the like may mean that a predetermined value is set in advance (Pre-configure), or the base station apparatus 10 Alternatively, the radio parameter notified from the user device 20 may be set.

FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. The wireless communication system according to the embodiment of the present invention includes a base station device 10 and a user device 20 as shown in FIG. Although FIG. 1 shows one base station device 10 and one user device 20, this is an example, and there may be a plurality of each.

The base station device 10 is a communication device that provides one or more cells and performs wireless communication with the user device 20. The physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station apparatus 10 transmits a synchronization signal and system information to the user apparatus 20. Synchronous signals are, for example, NR-PSS and NR-SSS. The system information is transmitted by, for example, NR-PBCH, and is also referred to as broadcast information. As shown in FIG. 1, the base station apparatus 10 transmits a control signal or data to the user apparatus 20 by DL (Downlink), and receives the control signal or data from the user apparatus 20 by UL (Uplink). Both the base station device 10 and the user device 20 can perform beamforming to transmit and receive signals. Further, both the base station device 10 and the user device 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station device 10 and the user device 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).

The user device 20 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the user apparatus 20 is provided by a wireless communication system by receiving a control signal or data from the base station apparatus 10 by DL and transmitting the control signal or data to the base station apparatus 10 by UL. Use various communication services.

When determining the TBS (Transport Block Size) per slot, the base station device 10 determines the TBS so that it is within the maximum feasible data rate based on the UE capability acquired from the user device 20. Is stipulated. The UE capability includes a scaling factor, which is a parameter used to calculate the maximum data rate. For example, the scaling factor takes a value such as 0.4 such as 1, 0.8, 0.75. The maximum data rate is defined for each FR (Frequency Range) and each CC (Component Carrier).

By defining the maximum data rate for each FR, it is possible to share the maximum data rate that can be provided among CCs of multiple bands in the same FR, and it is possible to flexibly schedule between CCs of different bands. It becomes. However, the scaling factor, which is one of the UE capabilities, can have a different value for each band, and is reported to the base station apparatus 10 by RRC (Radio Resource Control) signaling. When the value of the scaling factor is different between the bands belonging to the same FR, each band is limited by the scaling factor, so that it becomes difficult to flexibly schedule between different bands of the same FR.

Therefore, in a certain CA band combination, the scaling factor of the band belonging to the same FR reported as UE Noh is always the same value. That is, when the CA band combination is composed of only FR1 bands, the scaling factor of each band is the same value. When the CA band combination is composed of only FR2 bands, the scaling factor of each band is the same value. When the CA band combination is composed of the band of FR1 and the band of FR2, the band in FR1 has the same scaling factor, the band in FR2 has the same scaling factor, and the FR1 has the same scaling factor. The scaling factor may be different between the band and the FR2 band. As a result, the scaling factor can be set independently for FR1 and FR2.

FIG. 2 is a sequence diagram for explaining an operation example according to the embodiment of the present invention. Using FIG. 2, an operation example related to UE capability reporting in which the scaling factors of bands belonging to the same FR are always the same value will be described.

In step S1, the base station device 10 transmits the "UE Capacity Energy" inquiry of the UE capability to the user device 20. Subsequently, the user apparatus 20 transmits the “UE Capacity Information”, which is a report of the UE capability, to the base station apparatus 10 (S2). The user device 20 always sets the same value for the scaling factor included in the "UE Capability Information" as long as it is a band belonging to the same FR. As the scaling factor, values corresponding to UL and DL may be set independently.

In step S3, the base station apparatus 10 calculates the maximum data rate for each FR based on the received "UE Capability Information". The UL maximum data rate and the DL maximum data rate may be calculated independently of each other.

In step S4, the base station apparatus 10 schedules UL or DL to the user apparatus 20 within the maximum data rate calculated for each FR, and performs communication. Since the maximum data rate is specified for each FR, it is possible to share the maximum data rate that can be provided between CCs of multiple bands in the same FR, and flexible scheduling is possible between CCs of different bands. Become.

FIG. 3 is a flowchart for explaining an operation example according to the embodiment of the present invention. Step S3 shown in FIG. 2 will be described in detail with reference to FIG.

In step S31, the base station apparatus 10 calculates the maximum data rate for each CC by using a scaling factor common to each FR. Subsequently, the maximum data rate of each CC is added for each FR to calculate the maximum data rate for each FR (S32). Step S31 and step S32 may be executed in UL or DL respectively. As shown in FIG. 3, the maximum data rate for each FR can be calculated using a common scaling factor for each FR.

FIG. 4 is a specification change example (1) according to an operation example according to the embodiment of the present invention. As shown in FIG. 4, "scaling Factor", which is one of the parameters of UE capability, is defined. “ScalingFactor” is a parameter used to calculate the maximum data rate for a band. The "scaling Factor" takes a value such as 0.4, 0.75, and the value used to calculate the maximum data rate is 1 when the parameter does not exist. All bands belonging to the same FR are set to have the same value.

"ScalingFactor" may be set for DL and UL, such as "scalingFactor" included in "FeatureSetDownlink parameters" for DL, and "scalingFactor" included for "FatureSetUplink parameters" for UL, respectively.

FIG. 5 is a specification change example (2) according to an operation example according to the embodiment of the present invention. As shown in FIG. 5, the same value is defined in all the bands in the same FR in the "scaling Factor" included in the "FatureSetDownlink parameters" and the "scalingFactor" included in the "FeatureSetUplink parameters" which are the information elements of the RRC message. May be done. The “FeatureSetDownlink parameters” and the “FeatureSetUplink parameters” are transmitted from the user apparatus 20 to the base station apparatus 10 as “UECapacity Information” in step S2 shown in FIG.

According to the above embodiment, the user apparatus 20 can provide the base station apparatus 10 among CCs of a plurality of bands in the same FR by setting the scaling factors of the bands belonging to the same FR to the same value. It shares the maximum data rate and allows flexible scheduling between CCs across bands.

That is, in a wireless communication system, scheduling can be performed in which the maximum data rate is composed of a plurality of bands.

(Device configuration)
Next, a functional configuration example of the base station device 10 and the user device 20 that execute the processes and operations described so far will be described. The base station apparatus 10 and the user apparatus 20 include a function of carrying out the above-described embodiment. However, the base station device 10 and the user device 20 may each have only a part of the functions in the embodiment.

<Base station device 10>
FIG. 6 is a diagram showing an example of the functional configuration of the base station device 10. As shown in FIG. 6, the base station apparatus 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in FIG. 6 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.

The transmission unit 110 includes a function of generating a signal to be transmitted to the user device 20 side and transmitting the signal wirelessly. The receiving unit 120 includes a function of receiving various signals transmitted from the user apparatus 20 and acquiring information of, for example, a higher layer from the received signals. Further, the transmission unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, and the like to the user device 20.

The setting unit 130 stores preset setting information and various setting information to be transmitted to the user device 20 in the storage device, and reads them out from the storage device as needed. The contents of the setting information are, for example, communication settings related to scheduling of the user device 20, UE capability, and the like.

As described in the embodiment, the control unit 140 performs scheduling based on the UE capability of the user device 20 via the transmission unit 110. The function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.

<User device 20>
FIG. 7 is a diagram showing an example of the functional configuration of the user device 20. As shown in FIG. 7, the user device 20 includes a transmission unit 210, a reception unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 7 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be performed.

The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals and the like transmitted from the base station apparatus 10. Further, for example, the transmission unit 210 connects the other user device 20 to the PSCCH (Physical Sidelink Control Channel), PSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel) as D2D communication. ) Etc., and the receiving unit 120 receives the PSCCH, PSCH, PSDCH, PSBCH, etc. from the other user device 20.

The setting unit 230 stores various setting information received from the base station device 10 or the user device 20 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed. The setting unit 230 also stores preset setting information. The content of the setting information is, for example, UE capability and the like.

The control unit 240 reports the UE capability to the base station device 10 via the transmission unit 210, as described in the embodiment. Further, the control unit 240 controls communication based on the scheduling acquired from the base station apparatus 10. The function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.

(Hardware configuration)
The block diagrams (FIGS. 6 and 7) used in the description of the above embodiment show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one physically or logically connected device, or directly or indirectly (for example, two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. There are broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these. I can't. For example, a functional block (constituent unit) that functions transmission is called a transmitting unit (transmitting unit) or a transmitter (transmitter). As described above, the method of realizing each of them is not particularly limited.

For example, the base station device 10, the user device 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. FIG. 8 is a diagram showing an example of the hardware configuration of the base station device 10 and the user device 20 according to the embodiment of the present disclosure. The above-mentioned base station device 10 and user device 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. May be done.

In the following explanation, the word "device" can be read as a circuit, device, unit, etc. The hardware configuration of the base station device 10 and the user device 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For each function in the base station device 10 and the user device 20, by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, the processor 1001 performs an calculation and the communication device 1004 performs communication. It is realized by controlling or controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the above-mentioned control unit 140, control unit 240, and the like may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the control unit 140 of the base station device 10 shown in FIG. 6 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Further, for example, the control unit 240 of the user device 20 shown in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although it has been explained that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunication line.

The storage device 1002 is a computer-readable recording medium, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. It may be configured. The storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, Blu). -It may be composed of at least one of a 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 storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.

The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 includes, for example, 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: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of. For example, the transmission / reception antenna, the amplifier unit, the transmission / reception unit, the transmission line interface, and the like may be realized by the communication device 1004. The transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.

Further, the base station device 10 and the user device 20 include a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured to include hardware, and the hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented using at least one of these hardware.

(Summary of embodiments)
As described above, according to the embodiment of the present invention, the receiving unit that receives the first RRC (Radio Resource Control) message inquiring about the capability of the user device from the base station device, and the first RRC message. In response to, a transmitter that sends a second RRC message reporting the UE capability including the scaling factor, which is a parameter used to calculate the maximum data rate, to the base station apparatus, and the calculation based on the scaling factor. It has a communication unit that executes communication with the base station device on an uplink or a downlink scheduled within the maximum data rate, and the transmission unit has the scaling corresponding to a band belonging to the same FR (Frequency Range). A user device is provided that sets the same value for the factor.

With the above configuration, the user device 20 sets the scaling factor of the band belonging to the same FR to the same value, so that the base station device 10 can provide the maximum between CCs of a plurality of bands in the same FR. Data rates can be shared and flexible scheduling can be performed between CCs across bands. That is, in a wireless communication system, scheduling can be performed in which the maximum data rate is composed of a plurality of bands.

In a band combination composed of a band belonging to the first FR and a band belonging to the second FR, the transmitter has the same value as the scaling factor applied to the band belonging to the first FR. The same value may be set for the scaling factor applied to the band belonging to the second FR. With this configuration, when the band belongs to a plurality of FRs, the user apparatus 20 can apply a common scaling factor for each FR to set a maximum data rate that matches the characteristics of each FR.

The transmission unit may set different values for the scaling factor applied to the band belonging to the first FR and the scaling factor applied to the band belonging to the second FR. With this configuration, when the band belongs to a plurality of FRs, the user apparatus 20 can apply a scaling factor for each FR to set a maximum data rate that matches the characteristics of each FR.

Further, according to the embodiment of the present invention, the transmission unit that transmits the first RRC (Radio Resource Control) message inquiring about the capability of the user device to the user device and the response of the first RRC message are maximum. A receiver that receives a second RRC message reporting UE capability including a scaling factor, which is a parameter used to calculate the data rate, from the user device and a schedule within the maximum data rate calculated based on the scaling factor. A base station device that has a communication unit that executes communication with the user device on the uplink or downlink, and the same value is set for the scaling factor corresponding to a band belonging to the same FR (Frequency Range). Is provided.

(Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art can understand various modifications, modifications, alternatives, substitutions, and the like. There will be. Although explanations have been given using specific numerical examples in order to promote understanding of the invention, these numerical values are merely examples and any appropriate value may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in combination with another item. It may be applied (as long as there is no contradiction) to the matters described in. The boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component. The operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction. For convenience of processing description, the base station apparatus 10 and the user apparatus 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the user apparatus 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read, respectively. It may be stored in a dedicated memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

Further, the notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed by using another method. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof may be used. RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.

Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication). system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.

In some cases, the specific operation performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node). In a network consisting of one or more network nodes having a base station device 10, various operations performed for communication with the user device 20 are other than the base station device 10 and the base station device 10. It is clear that this can be done by at least one of the network nodes (eg, MME or S-GW, etc., but not limited to these). In the above, the case where there is one network node other than the base station apparatus 10 has been illustrated, but the other network nodes may be a combination of a plurality of other network nodes (for example, MME and S-GW). Good.

The information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be saved in a specific location (for example, memory), or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example). , Comparison with a predetermined value).

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.

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

Note that the terms explained in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, the component carrier (CC: Component Carrier) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

The terms "system" and "network" used in this disclosure are used interchangeably.

Further, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, the radio resource may be one indicated by an index.

The names used for the above parameters are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect limited names. is not.

In this disclosure, "base station (BS: Base Station)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB" (GNB) ”,“ access point ”,“ transmission point ”,“ reception point ”,“ transmission / reception point (transmission / reception point) ”,“ cell ”,“ sector ”, Terms such as "cell group," "carrier," and "component carrier" can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.

The base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by Remote Radio Head). The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage. Point to.

In the present disclosure, terms such as "mobile station (MS: Mobile Station)", "user terminal", "user device (UE: User Equipment)", and "terminal" may be used interchangeably. ..

Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

Further, the base station in the present disclosure may be read by the user terminal. For example, the communication between the base station and the user terminal is replaced with the communication between a plurality of user devices 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the user device 20 may have the functions of the base station device 10 described above. In addition, words such as "up" and "down" may be read as words corresponding to communication between terminals (for example, "side"). For example, the uplink, downlink, and the like may be read as side channels.

Similarly, the user terminal in the present disclosure may be read as a base station. In this case, the base station may have the functions of the user terminal described above.

The terms "determining" and "determining" used in this disclosure may include a wide variety of actions. "Judgment" and "decision" are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as "judgment" or "decision". Also, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision". Further, "judgment (decision)" may be read as "assuming", "expecting", "considering" and the like.

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in the present disclosure, the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be "connected" or "coupled" to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.

The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.

The phrase "based on" as used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second", etc. as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.

The "means" in the configuration of each of the above devices may be replaced with "part", "circuit", "device" and the like.

When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Furthermore, the term "or" used in the present disclosure is intended not to be an exclusive OR.

The wireless frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain. The subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.

The numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, wireless frame configuration, transmitter / receiver. At least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.

The slot may be composed of one or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.). Slots may be time units based on new melody.

The slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be called a sub slot. A minislot may consist of a smaller number of symbols than the slot. A PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.

The wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal. The radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.

For example, one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI. You may. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. It may be. The unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.

Here, TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the base station schedules each user device 20 to allocate radio resources (frequency bandwidth that can be used in each user device 20, transmission power, etc.) in TTI units. The definition of TTI is not limited to this.

The TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation. When a TTI is given, the time interval (for example, the number of symbols) to which the transport block, code block, code word, etc. are actually mapped may be shorter than the TTI.

When one slot or one mini slot is called TTI, one or more TTIs (that is, one or more slots or one or more mini slots) may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

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 slot, or the like. TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.

The long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.

The resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain. The number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers contained in the RB may be determined based on numerology.

Further, the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI. Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.

In addition, one or more RBs include a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.

Further, the resource block may be composed of one or a plurality of resource elements (RE: Resource Element). For example, 1RE may be a radio resource area of 1 subcarrier and 1 symbol.

Bandwidth part (BWP: Bandwidth Part) (which may also be called partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a certain neurology in a carrier. Here, the common RB may be specified by an index of the RB with respect to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set in one carrier for the UE.

At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP. In addition, "cell", "carrier" and the like in this disclosure may be read as "BWP".

The above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples. For example, the number of subframes contained in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB. The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic Prefix) length, and other configurations can be changed in various ways.

In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include that the nouns following these articles are in the plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". The term may mean that "A and B are different from C". Terms such as "separate" and "combined" may be interpreted in the same way as "different".

Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit notification, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

In this disclosure, the transmitting unit 210 and the receiving unit 220 are examples of communication units. The transmission unit 110 and the reception unit 120 are examples of communication units. The UECapacityEnquiry is an example of a first RRC message inquiring about the capabilities of a user device. The UECapacity Information is an example of a second RRC message reporting UE capability.

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure may be implemented as an amendment or modification without departing from the purpose and scope of the present disclosure, which is determined by the description of the scope of claims. Therefore, the description of the present disclosure is for the purpose of exemplary explanation and does not have any restrictive meaning to the present disclosure.

10 Base station device 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 User device 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

A receiver that receives the first RRC (Radio Resource Control) message inquiring about the capabilities of the user device from the base station device, and
In response to the first RRC message, a transmitter that transmits a second RRC message that reports the UE capability including the scaling factor, which is a parameter used to calculate the maximum data rate, to the base station apparatus.
It has a communication unit that executes communication with the base station apparatus on an uplink or a downlink scheduled within the maximum data rate calculated based on the scaling factor.
The transmitter is a user device that sets the same value for the scaling factor corresponding to a band belonging to the same FR (Frequency Range).
In a band combination composed of a band belonging to the first FR and a band belonging to the second FR, the transmitter has the same value as the scaling factor applied to the band belonging to the first FR. The user device according to claim 1, wherein the scaling factor is set and the same value is set for the scaling factor applied to the band belonging to the second FR.
The second aspect of the present invention, wherein the transmission unit sets different values for the scaling factor applied to the band belonging to the first FR and the scaling factor applied to the band belonging to the second FR. User device.
A transmitter that sends a first RRC (Radio Resource Control) message inquiring about the capability of the user device to the user device,
In response to the first RRC message, a receiver that receives a second RRC message from the user apparatus that reports the UE capability including the scaling factor, which is a parameter used to calculate the maximum data rate.
It has a communication unit that executes communication with the user device on an uplink or a downlink scheduled within the maximum data rate calculated based on the scaling factor.
A base station device in which the same value is set for the scaling factor corresponding to a band belonging to the same FR (Frequency Range).