WO2020166031A1 - Terminal device, base station device and wireless communication method - Google Patents

Abstract

A base station device for executing wireless communication with a terminal device, comprising an control information generation unit for generating control information for controlling the communication of the terminal device, and a transmission unit for transmitting the control information to the terminal device. The control information includes first information conforming to a first version and second information conforming to a second version that is different from the first version, the first information being constituted in a manner of being recognized by both a first terminal device conforming to the first version and a second terminal device conforming to the second version, the second information being constituted in a manner of being not recognized by the first terminal device and recognized by the second terminal device. Thus, it is possible to prevent the operation of the terminal device conforming to the first version from stopping and appropriately execute the communication control of the terminal device conforming to the second version.

Description

Terminal device, base station device, and wireless communication method

The present invention relates to a terminal device, a base station device, and a wireless communication method.

3GPP (Third Generation Partnership Project), an international standardization organization, is studying NR (New Radio), which is a new radio access technology for the 5th generation cellular communication system. NR is LTE (Long Term Evolution) which is a fourth generation cellular communication system? Techniques for realizing various types of services are being studied rather than Advanced. For example, in NR, eMBB (enhanced Mobile BroadBand) that realizes high-speed and large-capacity communication, URLLC (Ultra-Reliable and Low Latency Communication) that realizes ultra-high reliability and low-delay communication, and IoT (Internet of Things) devices Usage scenarios with different purposes such as mMTC (massive Machine Type Communication) that realizes multiple simultaneous connections are defined as realization requirements.

NR has a high degree of freedom in setting the frequency bandwidth in order to support high-speed communication between the base station device and the terminal device. For example, in NR, it is possible to add a new frequency bandwidth that is not specified in the previous release.

In NR, when a use band is assigned to a terminal device as the lowest frequency band among frequency bands of a newly defined bandwidth, it affects signals of other adjacent services (for example, PHS). there is a possibility. Therefore, in order to prevent the above-described interference, it is possible to transmit control information for suppressing communication power to the terminal device (see Non-Patent Documents 1 and 2).

3GPP standard ``TS 38.101'' 3GPP standard “TS 38.331”

However, in the case where a plurality of terminal devices included in the wireless communication system include a terminal device that complies with the standard of only the earlier release, according to Non-Patent Documents 1 and 2, the terminal device that complies with the standard of the earlier release is recognized. If the controllable information includes the newly added control information, the terminal device may stop operating.

Therefore, the present invention can prevent the operation of the terminal device conforming to the first version (for example, the preceding release) from being stopped, and the second version (for example, newly added). It is an object of the present invention to provide a technique capable of appropriately executing communication control of a terminal device conforming to a subsequent release corresponding to a certain bandwidth).

A base station device according to an aspect of the present invention is a base station device that performs wireless communication with a terminal device, and includes a control information generation unit that generates control information that controls communication of the terminal device, and control information for the terminal device. A transmission unit for transmitting the first control information, the control information including first information conforming to the first version and second information conforming to a second version different from the first version, Information is configured to be recognized by both the first terminal device conforming to the first version and the second terminal device conforming to the second version, and the second information is the first information. It is configured such that it is not recognized by the terminal device and is recognized by the second terminal device.

A terminal device according to one aspect of the present invention is a terminal device that performs wireless communication with a base station device, and controls a communication of the terminal device based on the control information and a receiving unit that receives control information from the base station device. A communication control unit for controlling the first control information, the control information including first information conforming to the first version and second information conforming to a second version different from the first version, The information is configured to be recognized by both the first terminal device compliant with the first version and the second terminal device compliant with the second version, and the second information is the first terminal device. The terminal device is configured so that it is not recognized by the device and recognized by the second terminal device, and the terminal device is the second terminal device.

According to the present invention, the control information for controlling the communication of the terminal device includes the first information complying with the first version and the second information complying with the second version different from the first version. .. The first information is configured to be recognized by both the first terminal device conforming to the first version and the second terminal device conforming to the second version, and the second information is the first information. The first terminal device is not recognized, and the second terminal device is recognized. Therefore, the control information includes the second information in a form that is not recognized by the first terminal device conforming to the first version. Therefore, it is possible to prevent the operation of the terminal device conforming to the first version from being stopped, and it is possible to appropriately execute the communication control of the terminal device conforming to the second version. ..

FIG. 1 is a schematic configuration diagram showing an example of a configuration of a wireless communication system according to an embodiment of the present invention. FIG. 2 is a conceptual diagram showing an example of a conventional communication control process. FIG. 3 is a conceptual diagram showing an example of communication control processing according to the embodiment of the present invention. FIG. 4 is a schematic configuration diagram showing an example of the configuration of the base station apparatus according to the embodiment of the present invention. FIG. 5 is a schematic configuration diagram showing an example of the configuration of the terminal device according to the embodiment of the present invention. FIG. 6 is a flowchart showing an example of communication control processing according to the embodiment of the present invention. FIG. 7 is a diagram showing an example of the hardware configuration of the computer according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention only to the embodiments. Further, the present invention can be variously modified without departing from the gist thereof. Further, in each of the drawings, the same constituents are denoted by the same reference numerals as much as possible, and redundant description is omitted.

A wireless communication system and a wireless network according to the embodiment of the present invention will be described. The wireless communication system according to the embodiment of the present invention targets a wireless communication standard regarding NR (5G: Fifth Generation), but is not limited thereto. For example, the present invention is LTE or LTE? It can also be applied to the wireless communication standard regarding Advanced. Further, it is also applicable to a wireless communication system using NR as a part of the wireless communication system. Furthermore, the present invention can be applied to any wireless communication system including at least a terminal device and a base station device, and can also be applied to future wireless communication systems. After that, LTE and LTE? Although Advanced is also called E-UTRA (Evolved Universal Terrestrial Radio Access), its meaning is the same.

"Standard" means an international standard, for example, NR or LTE/LTE? Includes international standards such as Advanced. “Release” means the status of revision within the standard. “Release” includes, for example, LTE release 9, or LTE release 10 indicating a release in which LTE release 9 is revised.

“Version” is information that identifies “standard” or “release”. The “first version” is a version established before the establishment of the “second version”. For example, the "first version" may be the LTE standard and the "second version" may be the NR standard. Also, for example, the "first version" is release 15 in the NR standard (for example, the above-described preceding release), and the "second version" is release 16 in the NR standard that is the same standard (for example, the above-mentioned new addition). Subsequent releases corresponding to the allocated bandwidth).

The area (cover area) formed by the base station device is called a cell, and E-UTRA and 5G are cellular communication systems constructed by a plurality of cells. As the wireless communication system according to the present invention, either the TDD (Time Division Duplex) or the FDD (Frequency Division Duplex) method may be applied, or a different method may be applied for each cell.

FIG. 1 is a schematic configuration diagram showing an example of the configuration of a wireless communication system according to an embodiment of the present invention. As shown in FIG. 1, the terminal device 1a or the terminal device 1n is wirelessly connected to the base station device 2a or the base station device 2n. Further, each of the terminal device 1a or the terminal device 1n may be wirelessly connected to the base station device 2a and the base station device 2n at the same time. E-UTRA or 5G can be used for the base station device 2a and the base station device 2n. For example, the base station device 2 may use 5G and the base station device 2n may use E-UTRA, or vice versa. The base station apparatus in E-UTRA is called an eNB (evolved NodeB), and the base station apparatus in NR is called a gNB (g-NodeB). Hereinafter, when it is described as a base station device, the meanings of both eNB and gNB are included. Further, a terminal device in E-UTRA and NR is called a UE (User Equipment). The base station apparatus gNB in NR may connect with a terminal device using a part (BWP:Carrier bandwidth part) of the frequency band used. Hereafter, the term “cell” includes BWP.

Note that the terminal devices 1a and 1n are illustrated as the n terminal devices 1 in the figure. However, in the following description, when these n terminal devices 1 are described without distinction, some of the reference numerals are omitted and they are simply referred to as “terminal device 1 ”. Further, in the figure, the base station device 2a and the base station device 2n are illustrated as the n base station devices 2. However, in the following description, in the case where the n base station devices 2 are described without distinction, some reference numerals are omitted and the base station devices 2 are simply referred to as "base station devices 2".

The terminal device 1 may be connected to the base station device 2 in cell units, for example, and may be connected using a plurality of cells (carrier aggregation). When the terminal device 1 is connected via a plurality of base station devices (dual connectivity), the base station device initially connected is the master node (MN: Master Node), and the base station device additionally connected is the secondary node ( SN: Secondary Node). The base station devices are connected by a base station interface. The base station device 2 and the core device 4 are connected by a core interface. The base station interface is used for exchanging control signals necessary for handover and cooperative operation between base station devices. The core device 4 has, for example, the base station device 2 as a subordinate thereof, and mainly handles load control between the base station devices, movement control such as calling (paging) of the terminal device 1 and location registration.

The terminal device 1 and the base station device 2 send and receive RRC messages in the radio resource control (RRC: Radio Resource Control) layer. In addition, the terminal device 1 and the base station device 2 transmit/receive a MAC control element (MACCE:MACControlElement) in a medium access control (MAC:MediumAccessControl) layer. The RRC message is transmitted as an RRC PDU (Protocol Data Unit), and as a logical channel to be mapped, a common control channel (CCCH: Common Control Channel), a dedicated control channel (DCCH: Dedicated Control Channel), and a paging control channel (PCCH:PCCH: Paging Control Channel), broadcast control channel (BCCH: Broadcast Control Channel), or multicast control channel (MCCH: Multicast Control Channel) is used. The MAC CE is transmitted as a MAC PDU (or MAC subPDU). The MAC sub PDU is equal to a service data unit (SDU: Service Data Unit) in the MAC layer to which, for example, an 8-bit header is added, and the MAC PDU includes one or more MAC sub PDUs.

The physical channels and physical signals related to this embodiment will be described. Among the physical channels related to the embodiment of the present invention, a physical broadcast channel (PBCH: Physical Broadcast Channel), a physical random access channel (PRACH: Physical RandomAccess Channel), a physical downlink control channel (PDCCH:Physical Downlink Control Channel), Also, the physical uplink shared channel (PUSCH: Physical Uplink Shared Channel) will be described below. In addition, in the wireless communication system according to the embodiment, a synchronization signal (Primary Synchronization Signal, Secondary Synchronization Signal), a physical uplink control channel (PUCCH: Physical Uplink Control Channel), a physical downlink shared channel (PDSCH: Physical Downlink Shared) Channel), a scheduling reference signal (SRS: Scheduling Reference Signal), and a demodulation reference signal (DMRS: Demodulation Reference Signal) are at least present, but a detailed description is omitted.

<Physical broadcast channel PBCH>
The physical broadcast channel PBCH is transmitted from the base station device to the terminal device, and is used to notify common parameters (broadcast information, system information) in cells under the control of the base station device. The system information is further classified into a master information block (MIB) and a system information block (SIB). The system information block is further subdivided and transmitted as SIB1, SIB2,.... The system information includes information necessary for connecting to the cell. For example, the MIB includes a system frame number and information indicating whether or not camping on the cell is possible. Further, the SIB1 includes parameters for calculating cell quality (cell selection parameters), cell common channel information (random access control information, PUCCH control information, PUSCH control information), and scheduling information of other system information. include.

<Physical random access channel PRACH>
The physical random access channel PRACH is used to transmit a random access preamble. The PRACH is generally used in a state where uplink synchronization with the base station apparatus is not established, and is used for transmission timing adjustment information (timing advance) and uplink radio resource request. The radio resource capable of transmitting the random access preamble is transmitted to the terminal device using the broadcast information.

<Physical downlink control channel PDCCH>
The physical downlink control channel PDCCH is transmitted from the base station apparatus to notify the terminal apparatus of downlink control information (DCI: Downlink Control Information). The downlink control information includes uplink radio resource information (uplink grant (UL grant)) or downlink radio resource information (downlink grant (DL grant)) that can be used by the terminal device. The downlink grant is information indicating scheduling of the physical downlink shared channel PDSCH. The uplink grant is information indicating scheduling of the physical uplink shared channel PUSCH. When the PDCCH is transmitted as a PRACH (random access preamble) response, the PRACH indicated by the PDCCH is a random access response, and includes random access preamble index information, transmission timing adjustment information, uplink grant, and the like.

<Physical Uplink Shared Channel PUSCH>
The physical uplink shared channel PUSCH is transmitted from the terminal device in order to notify the base station device of the uplink data (user data) and the uplink control data (RRC message). The PUSCH can also include physical layer control signals such as downlink reception quality and ACK/NACK. Moreover, when the terminal device transmits the PUSCH corresponding to the uplink grant included in the random access response, the PUSCH includes information (message 3) of the terminal device related to the random access.

An outline of the communication control processing according to the embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG. 2 is a conceptual diagram showing an example of a conventional communication control process. In the standard according to the embodiment of the present invention, contents related to reducing the communication power of the terminal device, for example, “A-MPR (Additional-Maximum Power Reduction)” are specified. According to this regulation, a specific signal NS value (Network Signaling Value) is transmitted from the base station device to control the communication power of the terminal device. The NS value is transmitted by the ASE (Additional Spectrum Emission) of the SIB described above.

As shown in FIG. 2, the NS value is, for example, 0 (NS_01) indicating that no special action is required, 1 (NS_100), 2 (NS_05), or 3 which is set according to the legislation of the country or region. (NS_05U) is included. When the NS value (NS_XX) conforming to the new version (second version) is added to the ASE conforming to the old version (first version), the terminal device conforming to the new version is the NS value (NS_XX). Can be recognized, so that the communication power of the terminal device conforming to the new version can be reduced. On the other hand, if the NS value (NS_XX) conforming to the new version is added to the ASE conforming to the old version, the terminal device conforming to the old version can recognize the ASE conforming to the old version, but Unable to recognize the included NS value (NS_XX). Therefore, the terminal device conforming to the old version stops operating. As described above, when the terminal device compliant with the old version is included among the plurality of terminal devices included in the wireless communication system, the information compliant with the old version is included in the information that the terminal device compliant with the old version can recognize. If the information that is not included is included, the terminal device conforming to the old version stops operating.

FIG. 3 is a conceptual diagram showing an example of communication control processing according to the embodiment of the present invention. As shown in FIG. 3, the control information for controlling the communication of the terminal device (for example, information for suppressing communication power) includes ASE (first information) conforming to the old version and ASE-compliant to the new version. BC (Backward Compatible) (second information). The ASE (first information) is configured to be recognized by both the terminal device conforming to the old version and the terminal device conforming to the new version, and the ASE-BC (second information) corresponds to the old version. The terminal device is not recognized by the compliant terminal device and is recognized by the terminal device compliant with the new version. Then, the NS value (NS_XX) conforming to the new version is stored in the ASE-BC conforming to the new version. Therefore, the control information includes the ASE-BC in a form that is not recognized by the terminal device conforming to the old version. Therefore, it is possible to prevent the operation of the terminal device conforming to the old version from being stopped, and it is possible to appropriately execute the communication control of the terminal device conforming to the new version. The communication control of the terminal device conforming to the new version includes, for example, control of suppressing the communication power of the terminal device conforming to the new version.

FIG. 4 is a schematic configuration diagram showing an example of the configuration of the base station device according to the embodiment of the present invention. As illustrated in FIG. 4, the base station device 2 is illustratively configured to include an information processing unit 21, a receiving unit 25, a transmitting unit 27, and a transmitting/receiving antenna unit 29. The information processing unit 21 exemplarily includes a communication bandwidth designation unit 211 and a control information generation unit 213.

The information processing unit 21 generates information for controlling the reception unit 25 and the transmission unit 27, for example. In addition, the information processing unit 21 performs processing related to, for example, a wireless resource control layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a wireless link control (Radio Link Control: RLC) layer, and a medium access control layer. Execute.

The communication bandwidth specifying unit 211 specifies the communication bandwidth used in the physical downlink and the physical uplink, for example. The communication bandwidth designation unit 211 generates designation information regarding the communication bandwidth and outputs it to the transmission unit 27.

The control information generation unit 213 generates control information that controls communication of the terminal device 1. The control information includes, for example, information for suppressing the communication power of the terminal device 1.

The receiving unit 25 separates, demodulates, and decodes various signals received from the terminal device 1 via the transmitting/receiving antenna unit 29, for example. The receiving unit 25 outputs the decrypted information to the information processing unit 21. The reception unit 25 may measure the state of the uplink channel from the received uplink signal and output the measurement result to the information processing unit 21, for example.

The transmitter 27 generates a downlink reference signal. The transmission unit 27 transmits information to the terminal device 1 via the transmission/reception antenna unit 29 by encoding, modulating, multiplexing, etc., various information input from the information processing unit 21.

FIG. 5 is a schematic configuration diagram showing an example of the configuration of the terminal device according to the embodiment of the present invention. As illustrated in FIG. 5, the terminal device 1 exemplarily includes an information processing unit 11, a receiving unit 15, a transmitting unit 17, and a transmitting/receiving antenna unit 19. The information processing unit 11 is illustratively configured to include a communication bandwidth determination unit 111 and a communication control unit 113.

The information processing unit 11 generates information for controlling the reception unit 15 and the transmission unit 17, for example. The information processing unit 11 executes, for example, processing related to the radio resource control layer, the packet data integration protocol layer, the radio link control layer, and the medium access control layer.

The communication bandwidth determination unit 111 determines the communication bandwidth used in the communication of the terminal device 1 based on, for example, the designation information regarding the communication bandwidth generated by the communication bandwidth designation unit 211 shown in FIG.

The communication control unit 113 controls the communication of the terminal device 1 based on the control information generated by the control information generation unit 213 shown in FIG. 4, for example. The communication control unit 113 suppresses the communication power of the terminal device 1, for example.

The receiving unit 15 separates, demodulates, and decodes various information received from the base station device 2 via the transmitting/receiving antenna unit 19. The receiving unit 15 transfers the decrypted information to the information processing unit 11.

The transmitting unit 17 generates a physical uplink signal and encodes and modulates the physical uplink signal input from the processing unit 11. The transmission unit 17 multiplexes various signals and transmits them to the base station device 2 via the transmission/reception antenna unit 19.

(Communication control processing)
FIG. 6 is a flowchart showing an example of communication control processing according to the embodiment of the present invention.

(Step S1)
The terminal device 1 receives the synchronization signal from the base station device 2. Further, the terminal device 1 receives the cell ID from the base station device 2. Further, the terminal device 1 executes the measurement of the radio field intensity (for example, RSRP, RSSI, etc.) by receiving the reference signal from the base station device 2 with respect to the cell that can be synchronized based on the synchronization signal. To do.

(Step S2)
The terminal device 1 determines, for example, the cell of the base station having the highest radio field intensity based on the measured radio field intensity. In addition, the terminal device 1 may determine the communication bandwidth of at least one of the uplink and the downlink based on the information included in the SIB or the MIB notified by the physical broadcast channel PBCH from the base station device 2.

(Step S3)
The terminal device 1 receives the control information from the base station device 2. The control information may be transmitted as notification information transmitted to one or more unspecified terminal devices 1. Further, the control information may be transmitted as individual information associated with each of the one or a plurality of terminal devices 1. With this configuration, it is possible to increase the degree of freedom regarding the setting of the control information transmission mode. The notification information may be composed of a physical layer code.

(Step S4)
The terminal device 1 executes communication control such as limiting the communication power of the terminal device 1 based on the received control information.

According to the embodiment of the present invention, the control information for controlling the communication of the terminal device includes the ASE (first information) conforming to the old version and the ASE-BC (second information) conforming to the new version. .. ASE is configured to be recognized by both the terminal device conforming to the old version and the terminal device conforming to the new version, and ASE-BC is not recognized by the terminal device conforming to the old version, and It is configured to be recognized by the terminal device conforming to the version. The NS value conforming to the new version is stored in the ASE-BC conforming to the new version. Therefore, the control information includes the ASE-BC in a form that is not recognized by the terminal device conforming to the old version. Therefore, the operation of the terminal device conforming to the old version can be prevented from stopping, and the communication control of the terminal device conforming to the new version can be appropriately executed.

FIG. 7 is a diagram showing an example of the hardware configuration of the computer according to the embodiment of the present invention. Referring to FIG. 7, it can be used as the terminal device 1, the base station device 2, or the core device 4 shown in FIG. 1, or can be used to configure the terminal device 1, the base station device 2, or the core device 4. An example of the hardware configuration of the computer will be described.

As shown in FIG. 7, the computer 40 mainly includes, as hardware resources, a processor 41, a main recording device 42, an auxiliary recording device 43, an input/output interface 44, and a communication interface 45. These are connected to each other via a bus line 46 including an address bus, a data bus, a control bus and the like. An interface circuit (not shown) may be interposed between the bus line 46 and each hardware resource.

The processor 41 controls the entire computer. The main storage device 42 provides a work area to the processor 41, and is a volatile memory such as SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory). The auxiliary storage device 43 is a non-volatile memory such as an HDD, an SSD, or a flash memory, which stores programs such as software and data. The program, data, etc. are loaded from the auxiliary recording device 43 to the main recording device 42 via the bus line 46 at any time.

The input/output interface 44 performs one or both of presenting information and receiving information input, and includes, for example, a digital camera, a keyboard, a mouse, a display, a touch panel display, a microphone, a speaker, and a temperature sensor. Etc. The communication interface 45 is connected to a network (not shown) and transmits/receives data via the network. The communication interface 45 and the network can be connected by wire or wirelessly. The communication interface 45 may also acquire information on the network, for example, information on the access point, information on the base station device of the communication carrier, and the like.

It will be apparent to those skilled in the art that the computer 40 can function as a desired means, perform a desired step, and realize a desired function by the cooperation of the hardware resources and the software exemplified above. ..

The above embodiments are for the purpose of facilitating the understanding of the present invention, and should not be construed as limiting the present invention. The present invention can be modified/improved without departing from the spirit thereof, and the present invention includes equivalents thereof.

The “base station device” is not limited to a so-called base station and may include other devices that generate control information for controlling the terminal device and provide the control information to the terminal device, as described above.

According to one aspect of the present invention, it is possible to prevent the operation of the terminal device conforming to the first version from being stopped, and to appropriately execute the communication control of the terminal device conforming to the second version. It is possible to provide a terminal device, a base station device, and a wireless communication method capable of performing the same.

1...Terminal device, 2...Base station device, 4...Core device, 11,21...Information processing unit, 15,25...Reception unit, 17,27...Transmission unit, 19,29...Transmission/reception antenna unit, 40...Computer, 41... Processor, 42... Main recording device, 43... Auxiliary recording device, 44... Input/output interface, 45... Communication interface, 46... Bus line, 111... Communication bandwidth determination unit, 113... Communication control unit, 211... Communication band Width designation section, 213... Control information generation section

Claims (9)

A base station device that performs wireless communication with a terminal device,
A control information generation unit that generates control information for controlling communication of the terminal device;
A transmission unit that transmits the control information to the terminal device,
The control information includes first information based on a first version and second information based on a second version different from the first version,
The first information is configured to be recognized by both a first terminal device conforming to the first version and a second terminal device conforming to the second version,
The second information is configured such that it is not recognized by the first terminal device and is recognized by the second terminal device.
Base station device. The first version is a version established prior to the establishment of the second version,
The base station device according to claim 1. The first information is composed of additionalSpectrumEmission in a format conforming to the first version, and the second information is composed of additionalSpectrumEmission in a format conforming to the second version.
The base station device according to claim 1. The control information includes one or more NS (Network Signaling) values,
The base station apparatus according to any one of claims 1 to 3. The control information is transmitted as notification information transmitted to one or more unspecified terminal devices, or as individual information associated with each of the one or more terminal devices,
The base station device according to any one of claims 1 to 4. The broadcast information is composed of a physical layer code,
The base station device according to claim 5. A wireless communication method used for a base station device that performs wireless communication with a terminal device,
Generating control information for controlling communication of the terminal device;
Transmitting the control information to the terminal device,
The control information includes first information based on a first version and second information based on a second version different from the first version,
The first information is configured to be recognized by both a first terminal device conforming to the first version and a second terminal device conforming to the second version,
The second information is configured such that it is not recognized by the first terminal device and is recognized by the second terminal device.
Wireless communication method. A terminal device that performs wireless communication with a base station device,
A receiver for receiving control information from the base station device,
A communication control unit that controls communication of the terminal device based on the control information;
The control information includes first information based on a first version and second information based on a second version different from the first version,
The first information is configured to be recognized by both a first terminal device conforming to the first version and a second terminal device conforming to the second version,
The second information is configured such that it is not recognized by the first terminal device and is recognized by the second terminal device,
The terminal device is the second terminal device,
Terminal device. A wireless communication method used for a terminal device that performs wireless communication with a base station device, comprising:
Receiving control information from the base station device,
Controlling communication of the terminal device based on the control information,
The control information includes first information based on a first version and second information based on a second version different from the first version,
The first information is configured to be recognized by both a first terminal device conforming to the first version and a second terminal device conforming to the second version,
The second information is configured such that it is not recognized by the first terminal device and is recognized by the second terminal device,
The terminal device is the second terminal device,
Wireless communication method.

Images