JP2023110115A - Communication device - Google Patents

Abstract

To provide a communication device capable of appropriately executing signal communication in a single carrier method.SOLUTION: A communication device includes a control unit that maps signals belonging to two or more information sources in one symbol time of a single carrier method, and a transmission unit that transmits signals to which the signals belonging to the two or more information sources are mapped.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present disclosure relates to a communication device that performs wireless communication, and more particularly to a communication device that performs signal communication in a single-carrier scheme.

The 3rd Generation Partnership Project (3GPP) has specified the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and the next generation specification called Beyond 5G, 5G Evolution or 6G We are also proceeding with

In Release 15 of 3GPP, OFDM (Orthogonal Frequency Domain Multiplexing) is used for downlink signals, and SC-FDMA (Single Carrier Frequency Division Multiple Access) is used for uplink signals (and sidelink signals). SC-FDMA may simply be called a single-carrier scheme.

3GPP TS36.201 V15.3.0

In next-generation specifications, the use of high-frequency bands exceeding 52.6 GHz and the expansion of coverage areas including the sky, sea, and space (ultra-coverage extension) are being considered. In such a usage scene, coverage or power efficiency is assumed to be more important than frequency utilization efficiency, and further consideration is required regarding the use of the above-described single-carrier scheme.

Therefore, the following disclosure has been made in view of such circumstances, and aims to provide a communication device capable of appropriately executing signal communication in a single carrier system.

One aspect of the present disclosure is a communication device, comprising: a control unit that maps signals belonging to two or more information sources in one symbol time of a single-carrier scheme; and a transmitter for transmitting the signal.

One aspect of the present disclosure is a communication device, a receiving unit that receives a signal in which signals belonging to two or more information sources are mapped in one symbol time of a single carrier system, and a receiving unit that belongs to the two or more information sources and a controller for demapping the signal.

FIG. 1 is an overall schematic configuration diagram of a radio communication system 10. As shown in FIG. FIG. 2 is a diagram illustrating frequency ranges used in wireless communication system 10. As shown in FIG. FIG. 3 is a diagram showing a configuration example of radio frames, subframes and slots used in the radio communication system 10. As shown in FIG. FIG. 4 is a functional block configuration diagram of UE200. FIG. 5 is a functional block configuration diagram of the communication device 300 (transmitting side). FIG. 6 is a functional block configuration diagram of the communication device 400 (receiving side). FIG. 7 is an example of a mapping of signals belonging to more than one information source. FIG. 8 is an example of a mapping of signals belonging to more than one information source. FIG. 9 is a flow diagram showing the operation of the communication device 300. As shown in FIG. FIG. 10 is a flow diagram showing the operation of the communication device 400. As shown in FIG. 11 is an example of mapping of two or more control signals according to Modification 1. FIG. FIG. 12 is a diagram showing an example of the hardware configuration of the communication device 300 and the communication device 400. As shown in FIG.

Hereinafter, embodiments will be described based on the drawings. The same or similar reference numerals are given to the same functions and configurations, and the description thereof will be omitted as appropriate.

[Embodiment]
(1) Overall Schematic Configuration of Radio Communication System FIG. 1 is an overall schematic configuration diagram of a radio communication system 10 according to an embodiment. The radio communication system 10 is a radio communication system according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter NG-RAN 20 and a terminal 200 (hereinafter UE 200).

Note that the radio communication system 10 may be a radio communication system conforming to a scheme called Beyond 5G, 5G Evolution, or 6G.

The NG-RAN 20 includes a radio base station 100A (hereinafter gNB100A) and a radio base station 100B (hereinafter gNB100B). Note that the specific configuration of the radio communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.

The NG-RAN 20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN 20 and 5GC may simply be referred to as a "network".

gNB100A and gNB100B are radio base stations conforming to 5G, and perform radio communication conforming to UE200 and 5G. gNB100A, gNB100B and UE200 generate beam BM with higher directivity by controlling radio signals transmitted from multiple antenna elements Massive MIMO (Multiple-Input Multiple-Output), multiple component carriers (CC ), and dual connectivity (DC) in which two or more transport blocks are communicated between the UE and each of the two NG-RAN Nodes at the same time.

Also, the wireless communication system 10 supports multiple frequency ranges (FR). FIG. 2 shows the frequency ranges used in wireless communication system 10. As shown in FIG.

As shown in FIG. 2, the wireless communication system 10 supports FR1 and FR2. The frequency bands of each FR are as follows.

・FR1: 410MHz to 7.125GHz
・FR2: 24.25 GHz to 52.6 GHz
In FR1, a Sub-Carrier Spacing (SCS) of 15, 30 or 60 kHz may be used and a bandwidth (BW) of 5-100 MHz may be used. FR2 is higher frequency than FR1 and may use an SCS of 60 or 120 kHz (240 kHz may be included) and a bandwidth (BW) of 50-400 MHz.

Note that SCS may be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.

Furthermore, the radio communication system 10 also supports frequency bands higher than the FR2 frequency band. Specifically, the wireless communication system 10 supports frequency bands exceeding 52.6 GHz and up to 114.25 GHz. Such high frequency bands may be conveniently referred to as "FR2x".

To solve this problem, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform - Spread (DFT- S-OFDM) may be applied.

FIG. 3 shows a configuration example of radio frames, subframes and slots used in the radio communication system 10. As shown in FIG.

As shown in FIG. 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and the slot period). The SCS is not limited to the intervals (frequencies) shown in FIG. For example, 480 kHz, 960 kHz, etc. may be used.

Also, the number of symbols forming one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols). Furthermore, the number of slots per subframe may vary between SCSs.

Note that the time direction (t) shown in FIG. 3 may also be referred to as the time domain, symbol period, symbol time, or the like. Also, the frequency direction may be called a frequency domain, resource block, subcarrier, bandwidth part (BWP), or the like.

(2) Functional Block Configuration of Radio Communication System Next, the functional block configuration of the radio communication system 10 will be described. Specifically, the functional block configuration of UE 200 will be described.

FIG. 4 is a functional block configuration diagram of UE200. As shown in FIG. 4, the UE 200 includes a radio signal transmission/reception unit 210, an amplifier unit 220, a modem unit 230, a control signal/reference signal processing unit 240, an encoding/decoding unit 250, a data transmission/reception unit 260, and a control unit 270. .

The radio signal transmitting/receiving unit 210 transmits/receives radio signals according to NR. The radio signal transmitting/receiving unit 210 supports Massive MIMO, CA that bundles a plurality of CCs, and DC that simultaneously communicates between the UE and each of the two NG-RAN Nodes.

The amplifier section 220 is composed of a PA (Power Amplifier)/LNA (Low Noise Amplifier) and the like. Amplifier section 220 amplifies the signal output from modem section 230 to a predetermined power level. In addition, amplifier section 220 amplifies the RF signal output from radio signal transmission/reception section 210 .

Modulation/demodulation section 230 performs data modulation/demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB 100 or other gNB). Modulation/demodulation section 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread (DFT-S-OFDM). Also, DFT-S-OFDM may be used not only for uplink (UL) but also for downlink (DL).

The control signal/reference signal processing unit 240 executes processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200 .

Specifically, the control signal/reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, radio resource control layer (RRC) control signals. Also, the control signal/reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.

The control signal/reference signal processing unit 240 performs processing using reference signals (RS) such as demodulation reference signals (DMRS) and phase tracking reference signals (PTRS).

A DMRS is a known reference signal (pilot signal) between a terminal-specific base station and a terminal for estimating a fading channel used for data demodulation. PTRS is a terminal-specific reference signal for estimating phase noise, which is a problem in high frequency bands.

In addition to DMRS and PTRS, reference signals may include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for position information.

Channels include control channels and data channels. Control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel), Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI)), and Physical Broadcast Channel (PBCH) etc. are included.

The data channel includes PDSCH (Physical Downlink Shared Channel), PUSCH (Physical Uplink Shared Channel), and the like. Data means data transmitted over a data channel. A data channel may be read as a shared channel.

The encoding/decoding unit 250 performs data segmentation/concatenation, channel coding/decoding, and the like for each predetermined communication destination (gNB 100 or other gNB).

Specifically, the encoding/decoding section 250 divides the data output from the data transmitting/receiving section 260 into predetermined sizes, and performs channel coding on the divided data. In addition, encoding/decoding section 250 decodes the data output from modem section 230 and concatenates the decoded data.

The data transmitter/receiver 260 performs transmission/reception of Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmitting/receiving unit 260 performs PDU/SDU in multiple layers (medium access control layer (MAC), radio link control layer (RLC), packet data convergence protocol layer (PDCP), etc.). Assemble/disassemble etc. The data transmission/reception unit 260 also performs data error correction and retransmission control based on hybrid ARQ (Hybrid automatic repeat request).

The control unit 270 controls each functional block that configures the UE200. For example, the control unit 270 may perform control to receive a signal including a symbol to which OFDM is applied (hereinafter referred to as OFDM symbol) as a downlink signal, and a symbol to which SC-FDMA is applied (hereinafter referred to as SC- FDMA symbols) may be transmitted as uplink signals. In an embodiment, the control unit 270 may perform control to receive a signal including SC-FDMA symbols as a downlink signal.

(3) Single Carrier System A single carrier system (SC-FDMA system) according to the embodiment will be described below. In the prior art, signals belonging to one information source are mapped in one symbol time in a single-carrier scheme. In contrast, in embodiments, signals belonging to more than one information source are mapped in one symbol time in a single-carrier scheme. In the following, the description will continue focusing on the SC-FDMA method. SC-FDMA according to the embodiments may be applied to uplink signals and may be applied to downlink signals.

(3.1) Communication device (transmitting side)
FIG. 5 is a functional block configuration diagram of the communication device 300 (transmitting side) according to the embodiment. For example, gNB 100 is used as communication apparatus 300 for downlink signals, and UE 200 is used as communication apparatus 300 for uplink signals. As shown in FIG. 5 , communication device 300 includes multiplexer 320 , DFT section 330 , mapping section 340 , IFFT section 350 , CP adding section 360 , and transmission section 370 .

A multiplexer 320 multiplexes signal sequences acquired from two or more information sources 310 (information source 310A and information source 310B in FIG. 5). Specifically, multiplexer 320 applies time division multiplexing to signal sequences obtained from two or more information sources 310 . The signal sequence may be a modulated signal sequence.

In an embodiment, multiplexer 320 constitutes a control unit that time-division multiplexes data belonging to two or more information sources 310 before mapping to one symbol is performed. Taking the UE 200 shown in FIG. 4 as an example, the multiplexer 320 may be configured by the modem section 230 and the control section 270 .

DFT section 330 applies DFT (Discrete Fourier Transform) to the signal sequence obtained by time division multiplexing, and transforms the time domain signal sequence into a frequency domain signal sequence.

Mapping section 340 maps the signal sequence obtained by DFT in one symbol time of the single carrier system. Specifically, when a single carrier is composed of two or more subcarriers (eg, 12 subcarriers), mapping section 340 maps the signal obtained by DFT to each subcarrier. Here, since the signal sequence obtained by DFT is a signal sequence in which signals belonging to two or more information sources 310 are time-division multiplexed, the signal sequence mapped to subcarriers by mapping section 340 is one It contains signals belonging to more than one information source 310 at symbol times.

In an embodiment, the mapper 340 constitutes a controller that maps signals belonging to more than one information source 310 in one symbol time in a single carrier scheme. Taking the UE 200 shown in FIG. 4 as an example, the mapping section 340 may be configured by the modem section 230 and the control section 270.

IFFT section 350 applies IFFT (Inverse Fast Fourier Transform) to the signal sequence obtained from mapping section 340 to convert the frequency domain signal sequence into a time domain signal sequence.

CP adding section 360 adds a CP (Cyclic Prefix) to the beginning of the signal output from IFFT section 350 (hereinafter referred to as SC-FDMA symbol).

Transmitter 370 transmits the CP-added signal as a transmission signal.

In an embodiment, the transmitter 370 constitutes a transmitter that transmits signals to which signals belonging to two or more information sources 310 are mapped. Taking the UE 200 shown in FIG. 4 as an example, the transmitting section 370 may be configured by the radio signal transmitting/receiving section 210 .

(3.2) Communication device (receiving side)
FIG. 6 is a functional block configuration diagram of the communication device 400 (receiving side) according to the embodiment. For example, UE 200 is used as communication apparatus 400 for downlink signals, and gNB 100 is used as communication apparatus 400 for uplink signals. As shown in FIG. 6, communication device 400 includes receiving section 410, CP removing section 420, DFT section 430, demapping section 440, IFFT section 450, and demultiplexer 460.

Receiving section 410 receives a signal transmitted from communication device 300 .

In the embodiment, the receiving unit 410 constitutes a receiving unit that receives signals to which signals belonging to two or more information sources 470 (corresponding to the information source 310 shown in FIG. 5) are mapped in one symbol time of a single carrier scheme. do. Taking the UE 200 shown in FIG. 4 as an example, the receiver 410 may be configured by the radio signal transmitter/receiver 210.

CP remover 420 removes the CP from the signal received by receiver 410 .

DFT section 430 applies DFT (Discrete Fourier Transform) to the CP-removed signal sequence to transform the time-domain signal sequence into a frequency-domain signal sequence.

Demapping section 440 demaps the signal sequence obtained by DFT. Specifically, when a single carrier is composed of two or more subcarriers (eg, 12 subcarriers), demapping section 440 demaps the signal sequence mapped to each subcarrier. Since the signal sequence obtained by DFT is a signal sequence in which signals belonging to two or more information sources 470 are time-division multiplexed, the signal sequence demapped to subcarriers is two or more in one symbol time. Contains signals belonging to information source 470 .

In embodiments, the demapper 440 constitutes a controller that demaps signals belonging to more than one information source 470 . Taking the UE 200 shown in FIG. 4 as an example, the demapping section 440 may be configured by the modem section 230 and the control section 270 .

IFFT section 450 applies an IFFT (Inverse Fast Fourier Transform) to the signal sequence obtained from demapping section 440 to convert the frequency domain signal sequence into a time domain signal sequence.

The demultiplexer 460 separates the signal series obtained from the IFFT section 450 into two or more information sources 470 (information sources 470A and 470B in FIG. 6). Specifically, demultiplexer 460 applies time division separation to the signal sequence obtained from IFFT section 450 . The signal sequence may be a modulated signal sequence.

(3.3) Mapping Example A mapping example according to the embodiment will be described below with reference to FIG. FIG. 7 illustrates a case where information source A and information source B exist as information sources. As shown in FIG. 7, the signals belonging to the information source A are 00, 11, . . . , 01, 10, . The signal sequence is 01, …, …. These signal sequences may be modulated signal sequences.

As described above, signals belonging to information source A and information source B are mapped to each subcarrier after being multiplexed by time division multiplexing (TDM). In other words, the signals belonging to source A and source B are time division multiplexed before the mapping to one symbol is performed. FIG. 7 illustrates a case where signals belonging to information source A and information source B are alternately mapped in the time domain. Thus, in an embodiment, signals belonging to more than one information source are mapped within one symbol time.

In addition, when a single carrier is composed of two or more subcarriers, the signal belonging to the information source A may be mapped to all subcarriers, or may be mapped to the subcarriers assigned to the information source A. good. Similarly, signals belonging to information source B may be mapped to all subcarriers or to subcarriers assigned to information source B.

Furthermore, FIG. 7 illustrates a case where there are two information sources and signals belonging to the information sources are alternately mapped in the time domain. However, embodiments are not so limited.

For example, as shown in FIG. 8, information source A, information source B, and information source C may exist as information sources. As shown in FIG. 8, in one symbol time, the signal belonging to information source A is mapped, then the signal belonging to information source B is mapped, and the signal belonging to information source B is mapped, and then the signal belonging to information source C is mapped. may be mapped. In other words, in one symbol time, the signals belonging to each information source may be mapped consecutively in the time domain.

(4) Communication method A communication method according to the embodiment will be described below.

First, processing for transmitting signals in the SC-FDMA system will be described with reference to FIG.

As shown in FIG. 9, in step S10, the communication device 300 multiplexes signals belonging to two or more information sources 310 by time division.

In step S11, the communication device 300 applies DFT to the time-division multiplexed signal.

In step S12, communication apparatus 300 maps the DFT-applied signal to subcarriers. Specifically, the communication device 300 maps signals belonging to two or more information sources 310 into one symbol.

In step S13, the communication device 300 applies IFFT to the signals mapped to the subcarriers.

In step S14, communication device 300 adds CP to the signal to which IFFT is applied.

In step S15, the communication device 300 transmits the CP-added signal as a transmission signal.

Secondly, processing for receiving signals in the SC-FDMA system will be described with reference to FIG.

As shown in FIG. 10, in step S20, the communication device 400 receives the CP-added signal as the received signal. The received signal includes the mapped signals belonging to two or more information sources 310 in one symbol time.

In step S21, the communication device 400 removes CP from the signal received from the communication device 300. FIG.

In step S22, the communication device 400 applies DFT to the CP-removed signal.

In step S23, communication apparatus 400 demaps the DFT-applied signal to each subcarrier. A DFT-applied signal includes signals belonging to more than one information source 470 .

In step S24, communication apparatus 400 applies IFFT to the signal demapped to each subcarrier.

In step S25, the communication device 400 separates signals belonging to two or more information sources from the IFFT-applied signal.

(5) Actions and Effects In the embodiment, the communication device 300 transmits a signal in which signals belonging to two or more information sources 310 are mapped in one symbol time. A communication device 400 receives a signal that maps signals belonging to two or more information sources 470 in one symbol time. According to such a configuration, communication resources can be efficiently used even in a case where a signal belonging to one information source does not require one symbol time.

In the embodiment, when a signal belonging to one information source 310 is a signal addressed to one UE 200, signals belonging to two or more information sources 310 may be mapped in one symbol time for downlink signals. According to such a configuration, sparse mapping is realized in the time domain for one UE 200 (information source), the time to be monitored by one UE 200 in one symbol time is reduced, and the processing load of the UE 200 is reduced. be.

[Modification 1]
Modification 1 of the embodiment will be described below. In the following, the differences with respect to the embodiments will be explained.

In Modification 1, communication apparatus 300 maps two or more control signals in one symbol time. More than one control signal may be considered more than one source 310 of information.

Specifically, as shown in FIG. 11, one slot consists of 14 symbols. As described above, the number of symbols forming one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols).

Here, two or more control signals (control signal A and control signal B in FIG. 11) are mapped in one symbol time. For example, the control signal may be a SS (Synchronization Signal)/PBCH (Physical Broadcast Channel) block. That is, two or more SS/PBCH blocks may be mapped in one symbol time. SS may include PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal).

In Modification 1, two or more control signals (eg, SS/PBCH blocks) are mapped in one symbol time. According to such a configuration, the shortest period in which the control signal appears can be shortened, and processing using the control signal (for example, precoder switching) can be speeded up.

[Modification 2]
Modification 2 of the embodiment will be described below. In the following, the differences with respect to the embodiments will be explained.

In modification 2, the communication device 300 may map signals belonging to more than one information source 310 in one symbol time if a predetermined condition is met.

For example, the predetermined condition may be that the frequency band is equal to or greater than a threshold. That is, the communication apparatus 300 maps signals belonging to one information source in one symbol time in a first frequency band (eg, frequency bands below 52.6 GHz, FR1 and FR2), and maps signals belonging to one information source in one symbol time. In a second frequency band (eg, the band above 52.6 GHz, FR2x), signals belonging to more than one source may be mapped in one symbol time.

Furthermore, the predetermined condition may be applied to downlink signals. That is, the communication apparatus 300 maps a signal belonging to one information source in one symbol time for the downlink signal of the first frequency band, and maps the downlink signal of the second frequency band higher than the first frequency band, Signals belonging to more than one information source may be mapped in one symbol time.

For example, the predetermined condition may be that the SCS is equal to or greater than a threshold. That is, communication apparatus 300 maps a signal belonging to one information source in one symbol time when the SCS is the first bandwidth, and when the SCS is the second bandwidth wider than the first bandwidth. , may map signals belonging to more than one information source in one symbol time.

Furthermore, the predetermined condition may be applied to downlink signals. That is, communication apparatus 300 maps a signal belonging to one information source in one symbol time for a downlink signal whose SCS is the first bandwidth, and maps the signal belonging to one information source in one symbol time, and maps the signal belonging to the second bandwidth where the SCS is wider than the first bandwidth. For a given downlink signal, signals belonging to more than one information source may be mapped in one symbol time.

For example, the predetermined condition may be that communication apparatus 300 is required to transmit power lower than a threshold. For example, when a first power is required as transmission power, the communication apparatus 300 maps a signal belonging to one information source in one symbol time, and requests a second power lower than the first power as transmission power. may map signals belonging to more than one source in one symbol time.

Furthermore, the predetermined condition may be applied to downlink signals. That is, when the first power is required as the transmission power of the downlink signal, the communication apparatus 300 maps the signal belonging to one information source in one symbol time, and maps the first power as the transmission power of the downlink signal. Signals belonging to more than one source may be mapped in one symbol time if a second lower power is required.

For example, the predetermined condition may be that a coverage area wider than a threshold is required for communication apparatus 300 . For example, when a first coverage area is required as the coverage area, the communication apparatus 300 maps signals belonging to one information source in one symbol time, and uses a second coverage area that is wider than the first coverage area as the coverage area. Signals belonging to more than one source may be mapped in one symbol time if areas are required.

Furthermore, the predetermined condition may be applied to downlink signals. That is, when the first coverage area is required as the downlink signal coverage area, the communication apparatus 300 maps signals belonging to one information source in one symbol time, and maps the first coverage area as the downlink signal coverage area. Signals belonging to more than one source may be mapped in one symbol time if a second coverage area that is wider than the coverage area is required.

The predetermined condition may be that the type of communication is mMTC (massive Machine Type Communication). For example, the communication apparatus 300 maps signals belonging to one information source in one symbol time when the communication type is not mMTC, and maps two or more signals belonging to one information source in one symbol time when the communication type is mMTC. A signal belonging to an information source may be mapped.

Furthermore, the predetermined condition may be applied to downlink signals. That is, communication apparatus 300 maps a signal belonging to one information source in one symbol time when the communication type of the downlink signal is not mMTC, and maps one signal when the communication type of the downlink signal is mMTC. Signals belonging to more than one source may be mapped at a symbol time.

[Other embodiments]
Although the contents of the present invention have been described above according to the embodiments, it is obvious to those skilled in the art that the present invention is not limited to these descriptions and that various modifications and improvements are possible.

In the embodiment, the case where there are two or three information sources of signals mapped in one symbol time is exemplified. However, embodiments are not so limited. There may be four or more information sources.

The block configuration diagram (FIG. 4) used to describe the above-described embodiment shows blocks in units of functions. These functional blocks (components) are implemented by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separated devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices. A functional block may be implemented by combining software in the one device or the plurality of devices.

Functions include judging, determining, determining, calculating, calculating, processing, deriving, examining, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. In either case, as described above, the implementation method is not particularly limited.

Furthermore, the communication device 300 and the communication device 400 (apparatus concerned) described above may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 12 is a diagram showing an example of the hardware configuration of the device. As shown in FIG. 12, the device may be configured as a computing device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

Note that in the following description, the term "apparatus" can be read as a circuit, device, unit, or the like. The hardware configuration of the device may be configured to include one or more of each device shown in the figure, or may be configured without some of the devices.

Each functional block of the device (see FIG. 4) is implemented by any hardware element of the computer device or a combination of the hardware elements.

In addition, each function of the device is implemented by causing the processor 1001 to perform calculations, controlling communication by the communication device 1004, and controlling the It is realized by controlling at least one of data reading and writing in 1002 and storage 1003 .

A processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) including interfaces with peripheral devices, a control unit, an arithmetic unit, registers, and the like.

Also, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. Furthermore, the above-described various processes may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.

The memory 1002 is a computer-readable recording medium, and includes at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), and the like. may be The memory 1002 may also be called a register, cache, main memory (main storage device), or the like. The memory 1002 can store programs (program code), software modules, etc. capable of executing a method according to an embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, for example, an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like. Storage 1003 may also be referred to as an auxiliary storage device. The recording medium described above may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003 .

The communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.

The communication device 1004 includes a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD), for example. may consist of

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

Devices such as processor 1001 and memory 1002 are also connected by bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between devices.

In addition, the device includes hardware such as microprocessors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), etc. A part or all of each functional block may be implemented by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

Also, notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods. For example, the notification of information includes physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or a combination thereof, and RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, RRC connection reconfiguration message, or the like.

Each aspect/embodiment described in the present disclosure is Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system ( 5G), Future Radio Access (FRA), New Radio (NR), W-CDMA®, GSM®, CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®) , IEEE 802.16 (WiMAX®), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth®, other suitable systems, and/or next-generation systems enhanced thereon. may be applied to Also, 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 processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be rearranged as long as there is no contradiction. For example, the methods described in this disclosure present elements of the various steps using a sample order, and are not limited to the specific order presented.

Certain operations that are described in this disclosure as being performed by a base station may also be performed by its upper node in some cases. In a network consisting of one or more network nodes with a base station, various operations performed for communication with terminals may be performed by the base station and other network nodes other than the base station (e.g. MME or S-GW, etc., but not limited to). Although the case where there is one network node other than the base station is exemplified above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information, signals (information, etc.) may be output from a higher layer (or lower layer) to a lower layer (or higher layer). It may be input and output via multiple network nodes.

The input/output information may be saved in a specific location (for example, memory) or managed using a management table. Input and output information may be overwritten, updated, or appended. The output information may be deleted. The entered information may be transmitted to other devices.

The determination may be made by a value represented by one bit (0 or 1), by a true/false value (Boolean: true or false), or by numerical comparison (for example, a predetermined value).

Each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching according to execution. In addition, the notification of predetermined information (for example, notification of “being X”) is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.

Software, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

Software, instructions, information, etc. may also be sent and received over a transmission medium. For example, the software may use wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to access websites, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.

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

The terms explained in this disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, the channel and/or symbols may be signaling. A signal may also be a message. A component carrier (CC) may also be called a carrier frequency, a cell, a frequency carrier, or the like.

As used in this disclosure, the terms "system" and "network" are used interchangeably.

In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. may be represented. For example, radio resources may be indexed.

The names used for the parameters described above are not limiting names in any way. Further, the formulas, etc., using these parameters may differ from those expressly disclosed in this disclosure. Since the various channels (e.g. PUCCH, PDCCH, etc.) and information elements can be identified by any suitable designations, the various designations assigned to these various channels and information elements are in no way restrictive designations. isn't it.

In the present disclosure, "base station (BS)", "radio base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", " "access point", "transmission point", "reception point", "transmission/reception point", "cell", "sector", "cell group", " Terms such as "carrier", "component carrier" may be used interchangeably. A base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.

A base station may serve one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (e.g., a small indoor base station (Remote Radio Station)). Head: RRH) can also provide communication services.

The terms "cell" or "sector" refer to part or all of the coverage area of a base station and/or base station subsystem serving communication within this coverage.

In this disclosure, terms such as “Mobile Station (MS),” “user terminal,” “User Equipment (UE),” “terminal,” etc. may be used interchangeably. .

A mobile station is defined by those skilled in the art as subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of a base station and a mobile station may be called a transmitter, a receiver, a communication device, and the like. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like. The mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and mobile station may be an Internet of Things (IoT) device such as a sensor.

Also, the base station in the present disclosure may be read as a mobile station (user terminal, hereinafter the same). For example, communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.) Regarding the configuration, each aspect/embodiment of the present disclosure may be applied. In this case, the mobile station may have the functions that the base station has. Also, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be read as side channels.

Similarly, mobile stations in the present disclosure may be read as base stations. In this case, the base station may have the functions that the mobile station has.

A radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe.

A subframe may also consist of one or more slots in the time domain. A subframe may be a fixed time length (eg, 1 ms) independent of numerology.

A numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.

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

A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) that is transmitted in time units larger than a minislot may be referred to as PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.

Radio frames, subframes, slots, minislots and symbols all represent units of time for transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.

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

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

The TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, codewords, or the like, or may be a processing unit for scheduling, link adaptation, or the like. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.

Note that when one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum scheduling time unit. Also, the number of slots (the 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 called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like. A TTI that is shorter than a normal TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and so on.

In addition, long TTI (for example, normal TTI, subframe, etc.) may be read as TTI having a time length exceeding 1 ms, and short TTI (for example, shortened TTI, etc.) is less than the TTI length of long TTI and 1 ms. A TTI having a TTI length greater than or equal to this value may be read as a replacement.

A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of neurology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on neumerology.

Also, the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long. One TTI, one subframe, etc. may each be configured with one or a plurality of resource blocks.

Note that one or more RBs are physical resource blocks (Physical RB: PRB), sub-carrier groups (Sub-Carrier Group: SCG), resource element groups (Resource Element Group: REG), PRB pairs, RB pairs, and the like. may be called.

Also, a resource block may be composed of one or more resource elements (Resource Element: RE). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

A Bandwidth Part (BWP) (which may also be called a Bandwidth Part) may represent a subset of contiguous common resource blocks (RBs) for a neuron on a carrier. good. Here, the common RB may be identified by an RB index based on 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 configured in one carrier for the UE.

At least one of the configured BWPs may be active and the UE may not expect to transmit or receive a given signal/channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

The structures such as radio frames, subframes, slots, minislots and symbols described above are exemplary only. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc. can be varied.

The terms "connected," "coupled," or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being "connected" or "coupled." Couplings or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in this disclosure, two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.

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

As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly specified otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

The “means” in the configuration of each device described above may be replaced with “unit”, “circuit”, “device”, or the like.

Any reference to elements using the "first," "second," etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not imply that only two elements can be employed therein or that the first element must precede the second element in any way.

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

In this disclosure, where articles have been added by translation, such as a, an, and the in English, the disclosure may include the plural nouns following these articles.

As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Judgement", "determining" are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure); Also, "judgment" and "determination" are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment" or "decision" has been made. In addition, "judgment" and "decision" are considered to be "judgment" and "decision" by resolving, selecting, choosing, establishing, comparing, etc. can contain. In other words, "judgment" and "decision" may include considering that some action is "judgment" and "decision". Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", or the like.

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

Although the present disclosure has been described in detail above, it should be apparent to those skilled in the art that the present disclosure is not limited to the embodiments described in this disclosure. The present disclosure can be practiced with modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not meant to be limiting in any way.

10 Radio communication system
20NG-RAN
100 gNB
200UE
210 Radio signal transmitter/receiver
220 amplifier section
230 Modulator/Demodulator
240 Control signal/reference signal processor
250 encoder/decoder
260 data transmitter/receiver
270 control unit
300 communication equipment
310 sources
320 multiplexer
330 DFT section
340 Mapping Section
350 IFFT section
360 CP addition part
370 transmitter
400 communication equipment
410 Receiver
420 CP remover
430 DFT section
440 Demapping section
450 IFFT section
460 Demultiplexer
470 sources
1001 processor
1002 memory
1003 Storage
1004 Communication equipment
1005 Input device
1006 output device
1007 Bus

Claims (5)

A control unit that maps signals belonging to two or more information sources in one symbol time of a single carrier system;
A communication device, comprising: a transmitter that transmits a signal to which signals belonging to the two or more information sources are mapped. The communication apparatus according to claim 1, wherein said control unit maps two or more control signals in said one symbol time. 3. The communication apparatus according to claim 1, wherein said control unit time-division multiplexes signals belonging to said two or more information sources before performing mapping for said one symbol. 4. The control unit according to any one of claims 1 to 3, wherein, when a predetermined condition is satisfied, the control unit performs a process of mapping signals belonging to the two or more information sources in the one symbol time. Communication device as described. a receiving unit that receives a signal in which signals belonging to two or more information sources are mapped in one symbol time of a single carrier system;
and a controller that demaps signals belonging to the two or more information sources.

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