WO2020175149A1

WO2020175149A1 - Base station device, terminal device, and communication method

Info

Publication number: WO2020175149A1
Application number: PCT/JP2020/005483
Authority: WO
Inventors: 宏道留場; 泰弘浜口
Original assignee: シャープ株式会社; 鴻穎創新有限公司
Priority date: 2019-02-26
Filing date: 2020-02-13
Publication date: 2020-09-03
Also published as: JP2020137087A

Abstract

Provided are a base station device, a terminal device, and a communication method which can improve frequency utilization efficiency and throughput by suppressing overhead from feedback from a terminal device when a base station device obtains highly accurate CSI. A base station device according to one embodiment of the present invention comprises a transmission unit which transmits at least one NZP CSI-RS, and a reception unit which receives at least one signal including CSI, the CSI containing at least RI and PMI; the CSI further containing information indicating the basis to be applied to a matrix in which the PMI is arranged in a prescribed dimension; the transmission unit signalling a value indicating the number of the PMI arranged in the prescribed dimension; and information in which the number of the PMI arranged in the prescribed dimension, the number of the basis and the RI are associated being configured for the terminal device.

Description

\¥02020/175149 1 unit (: 17 2020/005483

Specification

Title of invention: Base station device, terminal device, and communication method

Technical field

The present invention relates to a base station device, a terminal device and a communication method. The present invention is 2

01 Priority is claimed based on Japanese Patent Application No. 201 9-032634 filed in Japan on February 26, 1997, and the content thereof is incorporated herein.

Background technology

[0002] Aiming to start commercial services around 2020, research and development activities regarding 5th generation mobile wireless communication systems (5G systems) are being actively conducted. Recently, the International Telecommunication Union Radiocommunication Sector, which is an international standardization organization: from the (International Tel ecommun i cat i on Union Radio communications Sector I i 'U- R),

A vision recommendation regarding a standard method of 5 G systems (International mobile telecommunication -2020 and beyond: IMT-2020) was reported (see Non-Patent Document 1).

[0003] Securing frequency resources is an important issue for communication systems to cope with the rapid increase in data traffic. Therefore, at 5 G, one of the goals is to realize ultra-high capacity communication by using a higher frequency band than the frequency band used in LTE (Long term evolution). There is.

[0004] It is important to utilize spatial resources in order to improve throughput. Even in 5G systems, it is expected that the multi-input multi-output (MI MO) technology that uses multiple antennas for transmission and reception will be utilized (see Non-Patent Document 2). .. Further, if the base station device can grasp the channel state information (C S I) between the base station device and the terminal device, the efficiency of the M-MO technique is further enhanced.

As a method for the base station apparatus to acquire the CS I, it is possible to feed back the CS I measured by the terminal apparatus to the base station apparatus. For example, the base station device and the terminal device are provided with a codebook that includes a plurality of vectors indicating the state of the propagation path in advance. 〇 2020/175 149 2 (:171? 2020/005483

By sharing the clock, selecting the vector closest to C S I measured by the terminal device from the code block, and feeding it back to the base station device, the base station device can grasp the state of the propagation path. In this case, the accuracy of CSI that can be grasped by the base station device depends on the accuracy of the codebook, and if simply considered, the accuracy of CS丨 increases in proportion to the number of vectors described in the codebook. ..

[0006] Further, in order to realize high-speed transmission, widening of the transmission signal is indispensable, but widening of the transmission signal is nothing but shortening of the time length (symbol length) of the transmission signal. Therefore, the inter-symbol interference due to the delayed wave cannot be ignored. This means that the transmitted signal propagates in a channel having frequency selectivity. Therefore, the C S I that the base station equipment needs to understand means that in addition to spatial information, information that considers frequency fluctuations is required. Prior art documents

Non-patent literature

[0007] Non-Patent Document 1: “IMT V isi on-Framework and overa ll obj ect i ves of the future deve lopment of IMT for 2020 and beyond,” Recommendat i on ITU-R M. 2083-0, Sept . 2015.

Non-Patent Document 2: 3GPP RP-181453, “Enhancement on MIMO for NR,” June 201

8.

Summary of the invention

Problems to be Solved by the Invention

[0008] As described above, the accuracy of the CSI that can be acquired by the base station apparatus largely depends on the accuracy of the codebook referenced by the terminal apparatus. In addition, it is essential for the base station equipment to acquire CSI that considers the frequency selectivity of the propagation path in order to improve the efficiency of wideband transmission. However, this means that in order for the base station equipment to acquire highly accurate CSI, the overhead associated with the feedback from the terminal equipment increases. In addition, the propagation environment changes from moment to moment with the movement of terminal devices and changes in the surrounding environment. 〇 2020/175 149 3 卩 (：171? 2020 /005483

When the delay related to back increases, the base station device acquires

There is a problem that I can't keep up with changes in the transport environment.

[0009] One aspect of the present invention has been made in view of such circumstances, and an object thereof is to relate to a feedback from a terminal device when a base station device acquires highly accurate 0 3 I. An object of the present invention is to provide a base station device, a terminal device, and a communication method capable of improving frequency utilization efficiency or throughput by suppressing overhead. Means for solving the problem

The configurations of a base station device, a terminal device, and a communication method according to an aspect of the present invention for solving the above-mentioned problems are as follows.

[001 1] (1) That is, a base station device according to one aspect of the present invention is a base station device that communicates with a terminal device, and comprises at least one N 2

Sending part and at least 1

A receiving unit for receiving a signal including I, and the 0 3 I is at least

And the 0 3 I further includes the IV!

I includes information indicating a base applied to a matrix in which I is arranged in a predetermined dimension, and the transmitting unit signals a value indicating the number of IV! I arranged in the predetermined dimension, and arranges in the predetermined dimension. The number of IV! I, the number of bases,

The information associated with and is set in the terminal device.

(2) Further, the base station apparatus according to one aspect of the present invention is described in (1) above.

When the terminal device reports a value larger than a predetermined value, the terminal device signals information indicating the number of bases set by the terminal device.

(3) Further, a terminal device according to an aspect of the present invention is a terminal device that communicates with a base station device, and comprises at least one N 2

And a receiving unit that receives at least 1

A transmitting unit for transmitting a signal including a signal, and 0 3 I is at least

Including,

Further includes information indicating a basis to be applied to the matrix in which the IV! is arranged in a predetermined dimension, and the receiving unit arranges the matrix in the predetermined dimension. A value indicating the number of IV! I is obtained, and the value indicating the number of the IV! 丨 arranged in the predetermined dimension exceeds the first predetermined value, and the value of the ‘ 〇 2020/175 149 4 卩 (：171? 2020 /005483

If the value exceeds the second predetermined value, the number of vectors indicated by IV! I is set to the third predetermined value.

[0014] (4) Further, a communication method according to an aspect of the present invention is a communication method of a base station device that communicates with a terminal device, the step of transmitting at least one N 2 0 3 __[¾ 3 And at least 1

And a step of receiving a signal including 丨,

Is at least

Including,

Further includes information indicating a base applied to the matrix in which the IV! I is arranged in a predetermined dimension, and further, signaling a value indicating the number of the IV! I arranged in the predetermined dimension, and The number of the IV! I arranged in a predetermined dimension, the number of the bases, and the above-mentioned information are set in the terminal device.

Effect of the invention

[0015] According to an aspect of the present invention, since the base station relating to feedback from the terminal device when the base station device acquires highly accurate 0 3 I can be suppressed, frequency utilization efficiency or It is possible to improve the throughput. Brief description of the drawings

[0016] [FIG. 1] A diagram showing an example of a communication system according to the present embodiment.

FIG. 2 is a block diagram showing a configuration example of a base station apparatus according to this embodiment.

FIG. 3 is a block diagram showing a configuration example of a terminal device according to the present embodiment.

FIG. 4 is a diagram showing an example of a communication system according to the present embodiment.

FIG. 5 is a diagram showing an example of a communication system according to the present embodiment. MODE FOR CARRYING OUT THE INVENTION

[0017] The communication system according to the present embodiment includes a base station device (transmission device, cell, transmission point, transmission antenna group, transmission antenna port group, component carrier, ㊀ 1\1○^^ ₆ , transmission point, transmission/reception point , Transmission panel, access point) and terminal equipment (terminal, mobile terminal, reception point, reception terminal, reception device, reception antenna group, reception antenna port group, II, reception point, reception panel, station). It is also connected to a terminal device (establishing a wireless link 〇 2020/175 149 5 (:171? 2020 /005483

The base station device is called a serving cell.

[0018] The base station apparatus and the terminal apparatus in the present embodiment are also collectively called a communication apparatus. At least part of the communication method implemented by the base station apparatus in this embodiment can also be implemented by the terminal apparatus. Similarly, at least a part of the communication method implemented by the terminal device in the present embodiment can also be implemented by the base station device.

[0019] The base station device and the terminal device according to the present embodiment have a licensed frequency band.

It is possible to communicate in the (licensed band) and/or the unlicensed frequency band (unlicensed band).

[0020] In the present embodiment, "X/Y" includes the meaning of "X or Y". In the present embodiment, “X/Y” includes the meanings of “X and Y”. In the present embodiment, “X/Y” includes the meaning of “X and/or Y”.

[0021] [1. First Embodiment]

FIG. 1 is a diagram showing an example of a communication system according to the present embodiment. As shown in FIG. 1, the communication system in the present embodiment includes a base station device 1A and a terminal device 2A. Coverage 1 _ 1 is a range (communication area) in which the base station device 1 A can connect to the terminal device. The base station device 1 A is also simply called a base station device. The terminal device 2 A is also simply referred to as a terminal device.

In FIG. 1, the following uplink physical channels are used in the uplink radio communication from the terminal device 2 A to the base station device 1 A. The uplink physical channel is used to transmit the information output from the upper layers.

-P UCCH (Physical Uplink Control Channel)

-P USCH (Physical Uplink Shared Channel)

-P RACH (Physical Random Access Channel)

[0023] P UCCH is used to transmit uplink control information (UCI). Here, the uplink control information is AC K (a positive acknowledgement) or NACK (an acknowledgment for downlink downlink (Downlink transport block, DL -SCH). 〇 2020/175 149 6 卩 (：171? 2020 /005483

including egative acknowledgement) (AC K/N AC K). AC K/N AC K for downlink data is also referred to as H A RQ-AC K and H A RQ feedback.

[0024] Further, the uplink control information includes channel state information (CSI) for the downlink. In addition, the uplink control information includes a scheduling request (SR) used for requesting resources of an uplink-shared channel (UL-SCH). The channel state information includes a rank indicator R (Rank Indicator) that specifies a suitable spatial multiplex number, a precoding matrix indicator PMI (Precoding Matrix Indicator) that specifies a suitable precoder, and a channel that specifies a suitable transmission rate. Channel quality indicator CQ (Channel Quality Indicator), CS I-RS (Reference Signal) indicating a suitable RS resource indicator CRI (CSI-RS Resource Indicator), CS one RS or SS (Synchronous) RSRP (Reference Signal Received Power) measured by iz at ion Signal;

[0025] The channel quality index CQ I is (hereinafter, CQ I value), a suitable modulation scheme (for example, QPSK, 16QAM, 64 QAM, 256 QAM, etc.) in a predetermined band (details will be described later), a coding rate. (coding rate). The CQ index value may be an index (COI Ind ex) determined by the changing method or the coding rate. The CQ I value can be set in advance by the system.

[0026] The C R s indicates a C s R s resource having a favorable reception power/reception quality from a plurality of C s _ rs resources.

[0027] The rank index and the precoding quality index may be determined in advance by a system. The rank index and the precoding matrix index may be an index determined by the spatial multiplexing number and precoding matrix information. In addition, a part or all of the CQ value, PM value, R value and CRI value are collectively referred to as a CS I value. 〇 2020/175 149 7 卩(：171? 2020/005483

[0028] P USCH is used to transmit uplink data (uplink transport block, UL-SCH). The P USCH may also be used to send ACK/NACCK and/or channel status information along with the uplink data. Also, P USCH may be used to transmit only uplink control information.

[0029] In addition, P USCH is used to transmit an R RC message. R

The RC message is information/signal processed in the radio resource control (RRC) layer. Further, P USCH is used to transmit MAC CE (Contro I Element). Here, MAC C E is information/signal that is processed (transmitted) in a medium access control (MAC) layer.

[0030] For example, the power headroom may be included in MAC CE and reported via P USCH. That is, the MAC CE field may be used to indicate the level of power headroom.

[0031] P RACH is used to transmit a random access preamble.

In addition, in uplink wireless communication, an uplink reference signal (UL RS) is used as an uplink physical signal. Uplink physical signals are not used to carry information output by higher layers, but are used by the physical layer. Here, DMRS (D emodu lat i on Reference Signal), S R b (Sounding Reference signal), and

P T — R S (Phase-Tracking reference signal) is included.

[0033] What is DMRS? 113 ○ 1 ^~ 1 or? Relates ^to the transmission of 11 x 1 ^to 1. For example, the base station device 1 A is: 113 ○ 1 ^~ 1 or? DMRS is used to correct the propagation path of 11 x 1 ^to 1. For example, the base station device 1A uses SRS to measure the uplink channel state. SRS is also used for uplink observation (sounding). P T-RS is also used to compensate for phase noise. Note that the uplink DMRS is also called the uplink DMRS. 〇 2020/175 149 8 卩 (: 171? 2020 /005483

In FIG. 1, the following downlink physical channels are used in downlink radio communication from the base station device 1 A to the terminal device 2 A. The downlink physical channel is used to transmit the information output from the upper layers.

P BC H (Physical Broadcast Channe I; Broadcast Channel)

-PC FIC H (Physical Control Format Indicator Channel)

-PHICH (Physical Hybrid automatic repeat request Indicator Channel: HARQ indication channel)

-P DCC H (Phys i ca I Down Unk Contro I Channe I; downlink control channel)

-E P DCC H (Enhanced Physical Downlink Control Channel)

-PDSCH (Physical Downlink Shared Channe I; downlink shared channel)

[0035] P BCH is used to notify a master information block (MIB, Broadcast Channel: BCH) commonly used by terminal devices. The PCFICH is used to transmit information indicating the area used for transmitting the PDCCH (for example, the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols). Note that M and B are also called minimum system information.

[0036] The PH CH is used to transmit AC K/N AC K for the uplink data (transport block, codeword) received by the base station device 1A. That is, PHICH is used to transmit an HA RQ indicator (HARQ feedback) indicating ACK/NACK for uplink data. AC K/N AC K is also called HA RQ- AC K. The terminal device 2A notifies the upper layer of the received AC K/N AC K. AC K/N AC K is AC K indicating that it was correctly received, NACK that indicates that it was not received correctly, and D that there was no corresponding data. 〇 2020/175 149 9 (:171? 2020/005483

TX. Further, when there is no PH CH for the uplink data, the terminal device 2A notifies the upper layer of A CK.

[0037] P DCC H and E P DCC H are downlink control information (Downlink Control Information).

I Informat ion: DCI). Here, multiple DCI formats are defined for the transmission of downlink control information. That is, the fields for the downlink control information are defined in the DC format and are mapped to the information bits.

[0038] For example, as a DC format for the downlink, a DC format 1A used for scheduling one PDSCH (transmission of one downlink transport block) in one cell is defined. It

[0039] For example, the DC format for the downlink includes information about resource allocation of P DSCH, information about MCS (Modulation and Coding Scheme) for P DSCH, TPC command for PUCCH, and other downlink control information. included. Here, the DCI format for the downlink is also called a downlink grant (or downlink assignment).

[0040] Further, for example, as a DC format for the uplink, a DC format 0 used for scheduling one P USCH (transmission of one uplink transport block) in one cell is defined. Ru

[0041] For example, the DC format for the uplink includes uplink control information such as resource allocation information for P USCH, MCS information for P USCH, and T PC command for P U SCH. The DCI format for an uplink link is also called an uplink grant (or uplink link assignment).

[0042] The DC format for the uplink is also referred to as downlink channel state information (CS); reception quality information.

) Can be used to request (CSI request). 〇 2020/175 149 10 boxes (: 171-1? 2020 /005483

[0043] Further, the DC data format for the uplink can be used for setting an uplink resource that maps a channel state information report (CSI feedback report) that the terminal device feeds back to the base station device. For example, the channel state information report can be used for setting indicating an uplink resource that periodically reports channel state information (Periodic CSI). The channel status information report can be used for a mode setting (CSI report mode) for periodically reporting channel status information.

[0044] For example, the channel state information report may include irregular channel state information (Aperiodic

CSI) can be used for setting the uplink resource reporting. The channel state information report can be used for mode setting (CSI report mode) for reporting channel state information irregularly.

[0045] For example, the channel state information report can be used for setting indicating an uplink resource that reports semi-persistent channel state information (semi-persi stent CSI). The channel state information report can be used for a mode setting (CSI report mode) for semi-permanently reporting channel state information. Note that semi-persistent CS reporting is to periodically report CS during the period of being activated by the upper layer signal or downlink control information and then being deactivated.

[0046] Further, the DC format for the uplink can be used for setting indicating the type of channel state information report that the terminal device feeds back to the base station device. The types of channel state information reports include wideband CSI (eg, Wideband CQI) and narrowband CSI (eg, Subband CQI).

[0047] When the P DSC H resources are scheduled using the downlink assignment, the terminal device receives the downlink data on the scheduled P DSC H. In addition, when the resource of P U SCH is scheduled using the uplink grant, the terminal device transmits the uplink data and/or the uplink control information on the scheduled P U SC H.

[0048] PDSCH refers to downlink data (downlink transport block, D 〇 2020/175 149 11 卩 (：171? 2020 /005483

L-SCH). P DSCH is also used to send system information block type 1 messages. System Information Block Type 1 message is cell-specific (cell-specific) information.

[0049] In addition, P DSCH is used to transmit a system information message. The system information message contains the system information block X other than the system information block type 1. The system information message is cell-specific (cell-specific) information.

[0050] Also, P DSCH is used to transmit an R RC message. Here, the RRC message transmitted from the base station device may be common to a plurality of terminal devices in the cell. Further, the RRC message transmitted from the base station device 1 A may be a dedicated message (also referred to as “dedicated signaling”) to a certain terminal device 2 A. That is, the information specific to the user equipment (unique to the user equipment) is transmitted to a certain terminal device using a dedicated message. P DSCH is also used to transmit MAC CE.

[0051] Here, the RRC message and/or the MAC CE is also referred to as higher layer signaling.

[0052] Also, P DSCH can be used to request downlink channel state information. Also, P D S C H can be used to transmit an uplink link resource that maps a channel state information report (CSI feedback report) that the terminal device feeds back to the base station device. For example, the channel state information report can be used for setting the uplink link resource that periodically reports the channel state information (Periodic CSI). The channel state information report can be used for a mode setting (CSI report mode) for periodically reporting channel state information.

[0053] The types of downlink channel state information reports are wideband CS I (eg Wideban ○ There are 12 2020/175149 12 (:171? 2020/005483 d CSI) and narrow band CSI (eg Subband CSI). Wideband CSI calculates one channel state information for the cell system band. Narrow-band CS classifies the system band into predetermined units and calculates one channel state information for each class.

[0054] Further, in downlink radio communication, a synchronization signal (Synchron iZat i on signal: SS) and a downlink reference signal (Downlink Reference Signal: DL RS) are used as downlink physical signals. The downlink physical signal is not used to transmit the information output from the upper layer, but is used by the physical layer. In addition, the primary synchronization signal (Primary Synchronization Signal:

PSS) and Secondary Synchronization Signal (SSS).

The synchronization signal is used by the terminal device to synchronize the downlink frequency domain and time domain. The synchronization signal is also used to measure the received power, received quality, or signal-to-interference and noise power ratio (SINR). Note that the received power measured with the synchronization signal is S S_ RS R P (Synchronization Signal-Reference Signal Received Power)

The reception quality measured with the synchronization signal is also referred to as SS_RSRQ (Reference Signal Received Quality), and the SINR measured with the synchronization signal is also referred to as SS-SINR. Note that S S -R S R Q is the ratio of S S -R S R P to R S S 丨. R S S I (Received Signal Strength Indicator) is the average received power in a certain observation period. Also, the synchronization signal/downlink reference signal is used by the terminal device to perform channel correction of the downlink physical channel. For example, the synchronous signal/downlink reference signal is used by the terminal device to calculate downlink channel state information.

[0056] Here, the downlink reference signal includes DMRS (Demodulation Reference Signal), NZ PCSI — RS (Non-Zero Power Channel State information-Reference Signal), ZP CS I — RS (Zero Power Channel State Information-Reference Signal) _% PT— RS _% TRS (T 〇 2020/175 149 13 卩(：171? 2020/005483

racking Reference Signal) is included. Note that the downlink DM RS is also called the downlink DM RS. Note that in the following embodiments, when simply referred to as CS RS RS, it includes N Z P CS RS RS and/or Z P CS I — RS.

[0057] DMRS is 01\/|[¾3 related? 03 ○ 1 ^~ 1/?Mi ○ 1 ^~ 1/? 0 ○ ○ 1 ^~ 1/Mi

It is transmitted in the subframe and band used for transmission of P D C C H, and DMR S is used to perform demodulation of the associated P DSCH/P BCH/P DCCH/E P DCC H.

[0058] NZPCS The resource of one RS is set by the base station device 1A. For example, the terminal device 2 A performs signal measurement (channel measurement) or interference measurement using N Z P CS I —RS. N Z P CS I —RS is also used for beam scanning to search for a suitable beam direction and beam recovery for recovery when the received power/reception quality in the beam direction deteriorates. The resource of ZPCSI-RS is set by the base station device 1A. The base station device 1 A transmits Z P CS I —RS with zero output. For example, the terminal device 2A measures interference in the resource corresponding to ZPCSI_RS. The resource for interference measurement supported by ZPCSI-RS is also called CSI-IM (Interference Measurement) resource.

[0059] The base station device 1 A uses N Z P C for the resource of N Z P CS one RS.

S Send a R S resource setting (setting). The N Z P C S 1 R S resource configuration includes one or more N Z P CS I RS resource mappings, the C S I R S resource configuration D of each N Z P CS I -RS resource, and some or all of the number of antenna ports. C S _ R S resource mapping is information indicating the F DM symbol and subcarrier in the slot in which the C S I —RS resource is located (eg, resource element). The CS RS RS resource configuration ID is used to identify the N Z P CS RS RS resource.

[0060] The base station device 1A transmits (sets) a CS I-I M resource setting. CS

I-M resource configuration includes one or more CS I M M resource mappings, CS I M M resource configuration D for each CS I M resource configuration D 〇 2020/175 149 14 卩 (：171? 2020 /005483

.. 03 1-1 IV! resource mapping is defined as the 〇 in the slot where the 03 1-1 IV! resource is placed.

Information indicating a symbol or subcarrier (eg, resource element).

03 1-1 IV! Used to identify configuration resources.

[0061]

Received power, received quality,

It is used to measure

The received power measured in

The reception quality measured by

Measured by

[0062]

Sent regularly/aperiodically/semi-permanently.

[0063] With regard to 03 I, the terminal device is set in an upper layer. For example,

There are report settings, which are the settings for reports, resource settings, which are the settings for resources for measuring 0, and measurement link settings, which link the report settings and resource settings for measuring. Also, one or more report settings, resource settings, and measurement link settings are set.

[0064] Report settings are: Report setting type, Report setting type, Codebook setting, ○ 3 I report, ○ ○ table, Group-based beam reporting, ○ ○ number of each report, low rank Includes some or all of the ______ number for each report. The Report Settings Account is used to specify report settings. Report setting type indicates periodic/aperiodic/semi-permanent ○ 3 I report.

I Report amount indicates the amount (value, type) to be reported, such as 〇[¾丨, [¾丨, 1\/1丨,

Part of or all of. The XX table indicates the XX table when calculating 00 I. For group-based beam reporting, ◯ |\!/〇 (valid/invalid) is set. The number of items in each report is

丨 Indicates the maximum number of ○ 3 丨 per report.

Indicates the maximum number of birds. In addition, the number of ○I for each report in the low rank may be applied when the number of ○I for each report is 2. Codebook settings are codebook type and \¥02020/175149 15 卩(: 17 2020/005483

And its codebook settings are included. The codebook type indicates a type 1 codebook or a type 2 codebook. Also, the codebook settings include the settings of the type 1 codebook or type 2 codebook.

[0065] The resource setting includes a resource setting port, a synchronization signal block resource measurement list, a resource setting type, and a part or all of one or more resource set settings. The resource setting tag is used to specify the resource setting. The synchronous signal block resource setting list is a list of resources for which measurement is performed using the synchronization signal. Resource setting type is 0 3

Indicates whether is sent regularly, aperiodically or semi-permanently. In addition, semi-permanently 0 3 I

In case of setting to transmit, ◯ is periodically transmitted during the period from being activated by the upper layer signal or downlink control information to being deactivated.

[0066] The resource set settings include resource set setting information, resource repetition, and one or more ○ 3 I.

It includes some or all of the information indicating the resource. The resource set settings portal is used to specify resource set settings. The resource repetition indicates the resource repetition of 1/1/0 in the resource set. When the resource repetition is ◯, the base station device has multiple 〇 3 I in the resource set.

This means that a fixed (same) transmission beam is used for each resource. In other words, when the resource repetition is 0\1, the terminal equipment shall use the fixed (same) transmission beam for each of the multiple 0-3 [1-3 resources in the resource set by the base station. Assume When the resource repetition is ◯, it means that the base station device does not use a fixed (same) transmission beam for each of a plurality of 0-3 [1/3 resources in the resource set. In other words, when the resource repetition is 0, the terminal device has multiple 0 3 I — base station devices in the resource set.

Each resource does not use a fixed (same) transmit beam.

Contains multiple 0 3 丨 1 丨 IV! resource settings 〇 2020/175 149 16 卩(：171? 2020/005483

[0067] The measurement link setting includes a part or all of the measurement link setting D, the report setting I D, and the resource setting D, and the report setting and the resource setting are linked. The measurement link setting D is used to specify the measurement link setting.

[0068] MBS F N (Multimedia Broadcast multi cast service Single Frequency

Network) R S is transmitted in the entire band of the subframe used for transmitting P M C H. MBS F N RS is used for demodulating PMC H. PMCH is transmitted at the antenna port used for MBS F N R S transmission.

[0069] Here, the downlink physical channel and the downlink physical signal are collectively referred to as a downlink signal. The uplink physical channel and the uplink physical signal are also collectively referred to as an uplink signal. In addition, the downlink physical channel and the uplink physical channel are collectively referred to as a physical channel. In addition, the downlink physical signal and the uplink physical signal are collectively referred to as a physical signal.

[0070] In addition, BCH, UL-SCH, and DL-SCH are transport channels. The channel used in the MAC layer is called the transport channel. The unit of the transport channel used in the MAC layer is also called a transport block (Transport Block: TB) _% or a MAC PDU (Protocol Data Unit). A transport block is a unit of data that the MAC layer passes (deUver) to the physical layer. In the physical layer, transport blocks are mapped to codewords, and coding processing is performed for each codeword.

[0071] In addition, with respect to a terminal device that supports carrier aggregation (CA), the base station device integrates a plurality of component carriers (CCs) for wider band transmission. Can communicate. In carrier aggregation, one primary cell (PCe II: Primary Cell) and one or more secondary cells (SCe 丨丨; Secon dary Cell) are set as a set of serving cells. 〇 2020/175 149 17 卩(：171? 2020/005483

[0072] Also, in dual connectivity (DC), a master cell group (MCG; Master CeU Group) and a secondary cell group (SCG; Secondary CeU Group) are set as groups of serving cells. The MCG consists of a PCe and optionally one or more SCe. The SCG consists of a primary SC e I I (P SC e I I) and optionally one or more SC e I I.

[0073] The base station device can communicate using a radio frame. A radio frame is composed of multiple subframes (subsections). When the frame length is expressed in time, for example, the radio frame length can be 10 milliseconds (ms) and the subframe length can be 1 ms. In this example, the radio frame consists of 10 subframes.

[0074] In addition, a slot is composed of 14 O F DM symbols. -Since the FDM symbol length can change depending on the subcarrier spacing, the slot length can also be changed at the subcarrier spacing. Also, mini-slots are composed of less FDM symbols than slots. Slots/mini-slots can be scheduling units. The terminal device can know slot-based scheduling/mini-slot-based scheduling by the position (location) of the first downlink DM RS. In slot-based scheduling, the first downlink DM R S is assigned to the 3rd or 4th symbol of the slot. Also, in mini-slot based scheduling, the first downlink DM RS is placed in the first symbol of the scheduled data (resource, PDSCH).

[0075] A resource block is defined by 12 consecutive subcarriers.

A resource element is defined by a frequency domain index (for example, subcarrier index) and a time domain index (for example, FDM symbol index). Resource elements are classified as uplink resource elements, downlink elements, flexible resource elements, and reserved resource elements. Reserved resource element 〇 2020/175 149 18 卩 (：171? 2020 /005483

Then, the terminal device does not transmit the uplink signal and does not receive the downlink signal.

[0076] Also, a plurality of subcarrier spacings (SCSs) are supported. For example, the SCS is 15/30/60/1 20/240/480 kHz.

[0077] The base station apparatus/terminal apparatus can communicate in the licensed band or the unlicensed band. The base station device/terminal device has a license band of PCe I I and can communicate with at least one S C e I I operating in the unlicensed band by carrier aggregation. In addition, the base station device/terminal device can communicate in dual connectivity in which the master cell group communicates in the license band and the secondary cell group communicates in the unlicensed band. Also, the base station device/terminal device can communicate only with PCe in the unlicensed band. Also, the base station device/terminal device can communicate with CA or DC only in the unlicensed band. It should be noted that the license band becomes PC e 丨, and communication of cells of unlicensed band (SCe 丨, PSCe I 丨) with assisting by CA, DC, etc. Access). In addition, the fact that the base station device/terminal device communicates only in the unlicensed band is called unlicensed stand-alone access (ULSA). In addition, the communication of the base station device/terminal device only in the licensed band is called licensed access (LA; Licensed Access).

FIG. 2 is a schematic block diagram showing the configuration of the base station apparatus in this embodiment. As shown in Fig. 2, the base station device has an upper layer processing unit (upper layer processing step) 101, a control unit (control step) 102, a transmission unit (transmission step) 103, and a reception unit (reception step) 1 04, transmission/reception antenna 105, and measurement unit (measurement step) 106 are included. Also, the upper layer processing unit 101 is a radio resource control unit (radio resource control step) 101 1, a scheduling unit. 〇 2020/175 149 19 卩(：171? 2020/005483

(Scheduling step) 1 1 1 2 is included. Further, the transmitter 103 includes an encoder (encoding step) 1031, a modulator (modulation step) 1032, a downlink reference signal generator (downlink reference signal generation step) 1033, a multiplexer (multiplexer). Step) 1034 and wireless transmission section (wireless transmission step) 1035. In addition, the receiving unit 104 includes a wireless receiving unit (wireless receiving step) 1041, a demultiplexing unit (demultiplexing step) 1042, a demodulation unit (demodulation step) 1043, a decoding unit (decoding step) 1044. It is configured to include.

[0079] The upper layer processing unit 101 is a medium access control (MAC) layer and a packet data convergence protocol (Packet Data Convergence Protocol:

It processes the PDCP) layer, Radio Link Control (RLC) layer, and Radio Resource Control (RRC) layer. The upper layer processing unit 101 also generates information necessary for controlling the transmitting unit 103 and the receiving unit 104 and outputs it to the control unit 102.

[0080] Upper layer processing section 101 receives from the terminal device information related to the terminal device, such as the function (UE capability) of the terminal device. In other words, the terminal device transmits its function to the base station device as an upper layer signal.

[0081] In the following description, the information about the terminal device indicates whether the terminal device supports a predetermined function, or indicates that the terminal device has completed the introduction and the test of the predetermined function. Contains information. In the following explanation, whether or not to support a given function includes whether or not the implementation and testing for the given function have been completed.

[0082] For example, when a terminal device supports a predetermined function, the terminal device transmits information (parameter) indicating whether or not to support the predetermined function. If the terminal device does not support the specified function, the terminal device does not send information (parameter) indicating whether to support the specified function. That is, whether or not to support the predetermined function is notified by whether or not information (parameter) indicating whether or not to support the predetermined function is transmitted. 〇 2020/175 149 20 卩 (：171? 2020 /005483

Be done. Information (parameter) indicating whether or not to support a predetermined function may be notified using 1 bit of 1 or 0.

[0083] The radio resource control unit 101 1

Down link data (transport block), system information, message, IV! The radio resource control section 101 outputs downlink data to the transmission section 103 and outputs other information to the control section 102. Further, the radio resource control unit 1101 manages various setting information of the terminal device.

[0084] The scheduling unit 1102 assigns the physical channels (03 〇 1 ^to 1 and? 113 〇 1 ^to 1) to the frequency and subframe,

And P USCH) coding rate and modulation method (or 1/103) and transmission power are determined. The scheduling section 1102 outputs the decided information to the control section 102.

[0085] The scheduling unit 11012 generates information used for scheduling the physical channels (P DSCH and P USCH) based on the scheduling result. The scheduling unit 1102 outputs the generated information to the control unit 1102.

[0086] The control unit 102 generates a control signal for controlling the transmission unit 103 and the reception unit 104 based on the information input from the upper layer processing unit 101. The control unit 102 generates downlink control information based on the information input from the upper layer processing unit 101, and outputs the downlink control information to the transmission unit 103.

[0087] The transmission unit 103 generates a downlink link reference signal according to the control signal input from the control unit 102, and outputs 1 ^to 1 [¾ 〇 indicator, which is input from the upper layer processing unit 101]. Downlink control information and downlink data are coded and modulated to obtain PHI CH, 〇〇!!!, M 〇〇!!!,

And the downlink reference signal is multiplexed and the signal is transmitted to the terminal device 28 via the transmitting/receiving antenna 105.

[0088] The encoding unit 1031 is input from the upper layer processing unit 101, and !! <3 index 〇 2020/175 149 21 卩 (：171? 2020 /005483

Coder, downlink control information, and downlink data are predetermined with block coding, convolutional coding, turbo coding, LD PC (Low density parity check) coding, Polar coding, etc. Encoding is performed using this encoding method, or encoding is performed using the encoding method determined by the radio resource control unit 1 0 11. Modulation section 1032 applies the encoded bits input from encoding section 1031 to BPSK (Binary Phase Shift Keying),

QPSK (quadrature phase shift keying), 16 QAM (quadrature amp litude modulation) _% 64QAM, 256 QAM, or other modulation method determined in advance or determined by the radio resource control unit 101.

The downlink reference signal generation unit 1033 determines the terminal device according to a predetermined rule based on the physical cell identifier (PC I, cell index D) for identifying the base station device 1 A, etc. 2 A generates a known sequence as a downlink reference signal.

[0090] Multiplexing section 1034 multiplexes the modulated modulation symbol of each channel, the generated downlink reference signal, and downlink control information. In other words, multiplexing section 103 arranges the modulated symbols of each modulated channel, the generated downlink reference signal, and downlink control information in resource elements.

[0091] Radio transmission section 1 035 performs Inverse Fast Fourier Transform (IFFT) on the multiplexed modulation symbols to generate 〇 FDM symbols, and 〇 cyclic prefix (cyclic prefix: FDM symbols). CP) to generate a baseband digital signal, convert the baseband digital signal to an analog signal, remove excess frequency components by filtering, up-compart to carrier frequency, amplify power, transmit/receive Output to antenna 105 and transmit. The transmission power at this time is based on the information set via the control unit 102.

[0092] The receiving unit 104 separates, demodulates, and decodes the received signal received from the terminal device 2A via the transmitting/receiving antenna 105 according to the control signal input from the control unit 102, and outputs the decoded information to the higher order. Output to layer processing unit 101. The receiving unit 104 also has a function (step) for carrying out carrier sensing. 〇 2020/175 149 22 卩 (：171? 2020 /005483

[0093] The radio reception unit 1041 down-converts the uplink signal received via the transmission/reception antenna 105 into a baseband signal, removes unnecessary frequency components, and adjusts the signal level appropriately. The amplification level is controlled so that it is maintained at, and quadrature demodulation is performed based on the in-phase component and quadrature component of the received signal, and the quadrature-demodulated analog signal is converted to a digital signal.

[0094] Radio receiving section 1041 removes a portion corresponding to CP from the converted digital signal. Radio receiving section 1041 performs a fast Fourier transform (FFT) on the signal from which C P has been removed, extracts a frequency domain signal, and outputs the signal to demultiplexing section 1042.

[0095] Demultiplexing section 1042 demultiplexes the signal input from radio receiving section 1041 into signals such as PUCCH, PUSCH, and an uplink reference signal. Note that this separation is performed based on the radio resource allocation information included in the uplink grant, which the base station device 1 A determines in advance by the radio resource control unit 1101, and notifies each terminal device 2 A. Be done.

[0096] Further, demultiplexing section 1042 compensates the propagation paths of P UCCH and P USCH. Also, the demultiplexing unit 1042 demultiplexes the uplink reference signal.

[0097] Demodulation section 1043 performs an Inverse Discrete Fourier Transform (IDFT) on P USC H, acquires modulation symbols, and outputs B PS K for each of the P UCCH and P US CH modulation symbols. , QPSK, 16QAM, 64QAM, 256QAM, or the like, or demodulates the received signal using the modulation method that the terminal itself has notified to the terminal device 2A in advance by the uplink grant.

[0098] Decoding section 1044 encodes the demodulated P UCCH and P USCH coding bits in a predetermined coding scheme, in a predetermined manner, or in the uplink grant to terminal apparatus 2A by the own apparatus. Decoding is performed at the coding rate notified in advance in 1. and the decoded uplink data and uplink control information are output to the upper layer processing section 101. When P USCH is retransmitted, the decoding unit 1044 is demodulated with the coded bit held in the HA RQ buffer input from the upper layer processing unit 101. 〇 2020/175 149 23 卩 (：171? 2020 /005483

Decoding is performed using the encoding bit.

The measuring section 106 observes the received signal and obtains various measured values such as RS R P/RS RQ/RSS I. The measuring unit 106 also obtains the received power, the received quality, and the suitable S RS resource index from the S RS transmitted from the terminal device

[0100] Fig. 3 is a schematic block diagram showing the configuration of the terminal device in the present embodiment. As shown in Fig. 3, the terminal device has an upper layer processing unit (upper layer processing step) 201, a control unit (control step) 202, a transmitting unit (transmission step) 203, a receiving unit (reception step) 204, and a measurement. Part (measurement step) 205 and transmission/reception antenna 206 are included. The upper layer processing unit 201 is configured to include a radio resource control unit (radio resource control step) 201 1 and a scheduling information interpretation unit (scheduling information interpretation step) 201 2. Further, the transmitting unit 203 includes a coding unit (coding step) 2031, a modulation unit (modulation step) 2032, an uplink reference signal generation unit (uplink reference signal generation step) 2033, a multiplexing unit (multiplexing step). 2034, and a wireless transmission unit (a wireless transmission step) 2035. In addition, the receiving unit 204 is a radio receiving unit (wireless receiving step) 204 1, a demultiplexing unit (demultiplexing step)

2042, and a signal detection unit (signal detection step) 2043.

[0101] Upper layer processing section 201 outputs an uplink data (transport block) generated by a user's operation or the like to transmitting section 203. In addition, the upper layer processing unit 201 includes a medium access control (MAC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a radio resource control. (Radio Resource Control: RRC) Performs layer processing.

[0102] Upper layer processing section 201 outputs information indicating the function of the terminal device supported by the own terminal device, to transmitting section 203.

The radio resource control unit 201 1 manages various setting information of its own terminal device. In addition, the radio resource control unit 201 1 is assigned to each uplink channel. 〇 2020/175 149 24 卩 (：171? 2020 /005483

Information to be generated and output to the transmission unit 203.

The radio resource control unit 201 1 acquires the setting information transmitted from the base station apparatus and outputs it to the control unit 20 2.

[0105] The scheduling information interpretation unit 2 0 1 2 interprets the downlink control information received via the reception unit 2 04 and determines the scheduling information. Also, the scheduling information interpreting unit 2 0 1 2 generates control information for controlling the receiving unit 20 4 and the transmitting unit 2 0 3 based on the scheduling information, and the control unit 2 0 2 Output to.

[0106] The control unit 20 2 is a control signal for controlling the receiving unit 20 4, the measuring unit 20 5, and the transmitting unit 2 0 3 based on the information input from the upper layer processing unit 2 0 1. To produce. The control unit 20 2 outputs the generated control signal to the receiving unit 20 4, the measuring unit 20 5 and the transmitting unit 20 3, and controls the receiving unit 20 4 and the transmitting unit 2 03.

[0107] The control unit 202 is the measurement unit.

The transmitting unit 203 is controlled so as to transmit 3 I to the base station device.

[0108] The reception unit 204 separates, demodulates, decodes, and decodes the reception signal received from the base station device via the transmission/reception antenna 206 according to the control signal input from the control unit 202. The information is output to the upper layer processing unit 201. The receiving unit 204 also has a function (step) for carrying out carrier sensing.

[0109] The radio reception unit 2041 down-converts the downlink link signal received via the transmission/reception antenna 206 to a baseband signal, removes unnecessary frequency components, and outputs the signal level. The amplification level is controlled so that the signal is properly maintained, quadrature demodulation is performed based on the in-phase component and quadrature component of the received signal, and the quadrature-demodulated analog signal is converted into a digital signal.

[0110] Further, the radio receiving unit 2041 removes the part corresponding to ◯ from the converted digital signal, performs the fast Fourier transform on the signal with ◯ removed, and outputs the signal in the frequency domain. Extract.

[01 1 1] The demultiplexer 2 0 4 2 extracts the extracted signal from the !! 丨〇! ^~ 1, 〇〇! 〇 2020/175 149 25 卩 (: 171? 2020 /005483

Separate into C C H, P D S C H, and downlink reference signal. In addition, the demultiplexing unit 2042 performs channel compensation of PHI CH, P DCCH, and EP DCCH based on the channel estimation value of the desired signal obtained from the channel measurement, and detects downlink control information. , To the control unit 202. Further, control section 202 outputs P DSC H and the channel estimation value of the desired signal to signal detection section 2043.

Signal detection section 2043 detects a signal using P DSCH and a channel estimation value, and outputs the signal to upper layer processing section 201.

[0113] The measurement unit 205 performs various measurements such as C S I measurement, R RM (Radio Resource Management) measurement, and R LM (Radio Link Monitoring) measurement, and obtains C S I /R S R P/R S R Q/R S S I and the like.

[0114] Transmission section 203 generates an uplink link reference signal in accordance with the control signal input from control section 202, encodes the uplink data (transport block) input from upper layer processing section 201, and It modulates, multiplexes P UCCH, P US CH, and the generated uplink reference signal, and transmits them to the base station apparatus via the transmission/reception antenna 206.

[0115] Encoding section 2031 performs transposition encoding, block encoding, turbo encoding, LD PC encoding, Polar encoding of the uplink control information or uplink data input from upper layer processing section 201. Etc. are encoded.

[0116] Modulation section 2032 outputs the encoded bits input from encoding section 203 1 by B P

Modulation is performed by the modulation method notified by downlink control information such as SK, QPSK, 16QAM, 64QAM, or a modulation method that is predetermined for each channel.

[0117] The uplink reference signal generation unit 2033 includes a physical cell identifier (physical ceU identity: PCI, CeU ID, etc.) for identifying the base station device, a bandwidth for arranging the uplink reference signal, A sequence determined by a predetermined rule (expression) is generated based on the cyclic shift notified in the uplink grant and the parameter values for generating the DM RS sequence.

[0118] Multiplexing section 2034 generates PU CC H and PU SCH signals and the generated uplink. 〇 2020/175 149 26 卩 (：171? 2020 /005483

The reference signal is multiplexed for each transmission antenna port. That is, multiplexing section 2034 allocates the P UCCH and P US C H signals and the generated uplink reference signal to resource elements for each transmission antenna port.

[0119] Radio transmission section 2035 performs Inverse Fast Fourier Transform (IFFT) on the multiplexed signal to perform FDM modulation, generate OF DM A symbols, and generate ODM A symbols. CP is added to the FDM A symbol, a baseband digital signal is generated, the baseband digital signal is converted to an analog signal, excess frequency components are removed, and it is converted to a carrier frequency by the upcompartment. Amplifies the power and outputs it to the transmit/receive antenna 206 for transmission

[0120] Note that the terminal device can perform SC_F DMA system modulation as well as O F DMA system modulation.

[0121] When ultra-high-capacity communication such as ultra-high-definition video transmission is required, ultra-wideband transmission utilizing the high frequency band is desired. Beamforming is important for transmission in the high frequency band because it is necessary to compensate for path loss. Also, in an environment where multiple terminal devices exist in a certain limited area, if ultra-high capacity communication is required for each terminal device, the ultra-high density network ( Ultra-dense network) is enabled. However, if base station equipment is arranged in a high density, the SNR (Signal to Noise Power Ratio: Signal to noise power ratio i) is greatly improved, but strong interference due to beamforming may occur. .. Therefore, interference control (avoidance, suppression, removal) in consideration of beamforming and/or cooperation of multiple base stations is required to realize ultra-high capacity communication for all terminal devices in the limited area. Communication is required.

[0122] FIG. 4 shows an example of a downlink communication system according to the present embodiment. The communication system shown in FIG. 4 includes a base station device 3 A, a base station device 5 A, and a terminal device 4 A. The terminal device 4A can use the base station device 3A and/or the base station device 5A as a serving cell. In addition, there are many base station devices 3 A or base station devices 5 A. 〇 2020/175 149 27 卩 (：171? 2020 /005483

When equipped with multiple antennas, multiple antennas can be divided into multiple subarrays (panels, subpanels), and transmit/receive beamforming can be applied to each subarray. In this case, each sub-array can include a communication device, and the configuration of the communication device is the same as the base station device configuration shown in FIG. 2 unless otherwise specified. When the terminal device 4A has a plurality of antennas, the terminal device 4A can perform transmission or reception by beamforming. In addition, when the terminal device 4A has a large number of antennas, the large number of antennas can be divided into a plurality of subarrays (panels, subpanels), and different transmission/reception beamforming can be applied to each subarray. Each subarray can be equipped with a communication device, and the configuration of the communication device is the same as that of the terminal device shown in Fig. 3 unless otherwise specified. The base station device 3A and the base station device 5A are also simply referred to as a base station device. The terminal device 4A is also simply referred to as a terminal device.

[0123] The synchronization signal is used to determine a suitable transmission beam of the base station apparatus and a suitable reception beam of the terminal apparatus. The base station device transmits a synchronization signal block (SS block, SSB) composed of PSS, PBCH, and SSS. Within the sync signal block burst set period set by the base station device, one or more sync signal blocks are transmitted in the time domain, and a time index is set for each sync signal block. .. The terminal equipment shall synchronize the sync signal block with the same time index within the burst set period by delay spread, Doppler spread, Doppler shift, average gain, average delay, spatial reception parameters, and/or spatial reception parameters. It may be considered that the data are transmitted from the same position (quasi co-located: 0CL) where the same transmission parameters can be regarded as the same. The spatial reception parameters are, for example, the spatial correlation of channels and the angle of arrival (Angle of Ar ri va l). Spatial transmission parameters are, for example, channel spatial correlation and transmission angle (Angle of Departure). In other words, the terminal device assumes that within the synchronization signal block burst set cycle, synchronization signal blocks with the same time index are transmitted with the same transmission beam, and synchronization signal blocks with different time indices are transmitted with different beams. 〇 2020/175 149 28 卩 (：171? 2020 /005483

can do. Therefore, if the terminal device reports to the base station device information indicating the time index of a suitable sync signal block within the sync signal block burst set period, the base station device can know the suitable transmission beam for the terminal device. it can. Further, the terminal device can obtain a reception beam suitable for the terminal device by using the synchronization signal blocks having the same time index in different synchronization signal block burst set periods. Therefore, the terminal device can associate the time index of the synchronization signal block with the reception beam direction and/or subarray. When the terminal device includes a plurality of sub-arrays, different sub-arrays may be used when connecting to different cells.

[0124] In addition, in order to determine a suitable transmission beam of the base station apparatus and a suitable reception beam of the terminal apparatus, the CS reference RS can be used. The base station device can set the setting information by the signal of the upper layer. For example, the setting information includes some or all of resource setting and report setting.

[0125] The resource settings are resource setting ID, resource setting type, and/or

Contains one or more CS RS resource set settings. The resource configuration entry is used to specify the resource configuration. The resource configuration type indicates the time domain behavior of resource configuration. Specifically, the resource configuration is set to send a CS _ RS aperiodically, periodically, to send a CS _ RS, or semi-persistently to a CS. Indicates whether the setting is to send I_RS. The CS_RS resource set settings include CS I-RS resource set settings D and/or one or more CS_RS resource settings. CS_RS_RS_SET_ID Used to specify the CS resource set setting ID and CS_RS resource set setting. CS I RS resource configuration is CS I — RS resource configuration D, resource configuration type, number of antenna ports, CS I RS resource mapping, CS I — RS and some or all of D DSCH including. The CS I-RS resource configuration D is used to identify the CS I-RS resource configuration, and the CSI-RS resource configuration ID is associated with the CS I RS resource. CS 丨 1 RS resource map 〇 2020/175 149 29 卩 (：171? 2020 /005483

Bing is in the slot

Indicates the resource element (○ 01\/1 symbol, subcarrier) where is allocated.

[0126] The resource setting is 0 3 measurement or

Used for measurement. The terminal device is

Received

And report to the base station device. Also,

Multiple resource set settings 0 3 丨

When including resource settings, the terminal device

3 resources with the same receive beam

Received

Calculate 丨.

〇 whose resource set settings are <(< is an integer of 2 or more)

Is included,

Is suitable for <number of 0 3 丨 1 [¾ 3 resources

Indicates a resource. However, 1\1 is a positive integer less than [<.

There are multiple

When showing resources, which 〇 3 I

3 In order to indicate whether the quality of resources is good, the terminal device

Measured with 3 resources 0 3 _

Can be reported to the base station device. Multiple base station devices have been set.

Each resource has different beam direction 〇 3 I _

If 3 is beamformed (precoded) and transmitted, it is reported from the terminal device.

It is possible to know the transmission beam direction of the base station device suitable for the terminal device from I. ^_3 , the preferred receiving beam direction of the terminal device is that the transmitting beam of the base station device is fixed

It can be determined using resources. For example, the base station device

Information indicating whether the transmission beam of the base station device is fixed and/or the period during which the transmission beam is fixed are transmitted. The terminal equipment may use different receive beam directions for each of the 3 0 1 [¾ 3 resources for which the transmit beam is fixed.

A suitable reception beam direction can be obtained from Note that the terminal device may report 0 3 __[¾ 3 [¾? After determining a suitable reception beam direction. In the case where the terminal device is provided with a plurality of subarrays, the end terminal device, when determining the suitable received bi ^_ beam direction, can you to select a suitable Sabuare ^_. The preferred receiving beam direction of the terminal device is

May be associated with a 丨. In addition, multiple terminal devices

If I is reported, 20/175149 30 units (：171? 2020 /005483

0 3 丨 associated with 丨

The transmission beam can be fixed by resources. At this time, the terminal device

A suitable receiving beam direction can be determined for each case. For example, the base station equipment may be a downlink signal/channel

I can be associated and sent. At this time, the terminal device

Must be received on the receive beam associated with I. In addition, different base station devices may be used in the set multiple 0-3 [3 resources.

I allows the network side to know from which base station device the communication quality is good. In addition, when the terminal device has a plurality of sub-arrays, the sub-arrays can be received at the same timing. Therefore, if the base station device associates and transmits 〇[¾] to each of multiple layers (codeword, transport block) in downlink control information, the terminal device

Multiple layers can be received using the sub-array corresponding to I and the receive beam. However, when using an analog beam, when one receive beam direction is used in one sub-array at the same timing, and when two circles corresponding to one sub-array of the terminal device are set at the same time, The terminal device may not be able to receive with multiple receive beams. In order to avoid this problem, for example, the base station equipment has multiple

Resources are divided into groups, and within the group, the same subarray is used.

Ask for i. Also, if different subarrays are used between groups, the base station equipment can be set at the same timing.

A group of 3 resources is 0 3

3 Resource set is acceptable. Note that it is possible to set ◯◯!_ that can be set at the same timing. At this time, the terminal device can store the information! For example, if the terminal device is 0 <3 !_

If it is reported separately, the base station device is ◯◯!_.

Do not set to the same timing,

You can set the same timing. Also, the base station device may request 0 3 for each sub-array of the terminal device. In this case, the terminal device 〇 2020/175 149 31 卩(：171? 2020/005483

— Report CS I for each. When the terminal device reports multiple CR I's to the base station device, it may only report CR non-QCL.

[0127] The reporting settings are settings related to CSI reporting, and include reporting settings D, reporting settings type, and/or reporting values (quantities). The reporting settings account is used to identify reporting settings. The reported value (quantity) is the CSI value (quantity) to be reported. The reporting setting type is a setting for reporting a CS I value (amount) aperiodically, a setting for reporting a CS I value (quantity) periodically, or a semi-permanent (reporting) setting. It is a setting to report the CS value (quantity) to (semi-persistent).

[0128] When the CS I is reported aperiodically or semi-permanently, the base station device transmits a trigger (trigger information) for starting the report of the CS I to the terminal device. The trigger can be DC spelling or higher layer signaling.

[0129] In order to determine a suitable transmission beam of the base station apparatus, a codebook in which candidates of a predetermined bricoding (beamforming) matrix (vector) are defined is used. The base station device transmits CS I-RS, the terminal device obtains a suitable precoding (beamforming) matrix from the codebook, and reports it to the base station device as PM I. By this means, the base station apparatus can know the transmission beam direction suitable for the terminal apparatus. There are two types of codebooks: a burcoding (beamforming) matrix that combines antenna ports and a burcoding (beamforming) matrix that selects antenna ports. When a codebook that selects antenna ports is used, the base station device can use different transmission beam directions for each antenna port. Therefore, if the terminal device reports a suitable antenna port as PM I, the base station device can know a suitable transmission beam direction. The preferred receive beam of the terminal device may be the receive beam direction associated with the CR or may be the preferred receive beam direction again. When a codebook for selecting an antenna port is used and the preferred receive beam direction of the terminal device is the receive beam direction associated with CR I, the receive beam direction for receiving CS-1 RS 〇 2020/175 149 32 卩 (: 171? 2020 /005483

Direction is

It is desirable to receive in the receive beam direction associated with the bird. In addition, the terminal device,

Even if the receive beam direction associated with I is used, 1\/1丨 can be associated with the receive beam direction. Further, when using a codebook for selecting antenna ports, each antenna port may be transmitted from different base station devices (cells). In this case, if the terminal device reports 1\/1 I, the base station device can know with which base station device (cell) the communication quality is suitable. In this case, the antenna ports of different base station devices (cells) can be assumed not to be 001_.

[0130] II 3_Rei if ^1-1 in 〇 3丨is reported, or if II_〇_〇 ^1-1 subband 〇 3丨is reported,

Also, .031 reports are type 1

There are 丨 reports and type 203 丨 reports. Based on the Type 1 codebook, Type 1 03 reports

丨 (also called type 1 031) is reported. Based on the Type 2 codebook for Type 203 reports

丨 (also called type 203 丨) is reported. There are also two parts in the first part (part 1,

It is also called the 丨 part 1) and the second part (part 2, 033 part 2). It should be noted that the first part has a higher priority for 0 3 reporting than the second part. For example, if ^ is 4 or less, the first part is

1st 〇

Includes some or all of 〇〇 (or the second 〇丨) based on 丨. The second part is the first

Includes part or all of the first [¾ 1, the first 000, the first 1\/1, and the second 1\/1.

Sum of (or

No. 2

Including. The second part is a part or all of the first 〇[¾丨, the first [¾丨, the first 〇〇丨, the first 1\/1丨, the second 1\/1丨including. In addition,

The third part is also called the third part (part 3, 03 part 3). The third part has a lower priority than the second part. At this time,

The sum of I (or the

Rei and No. 〇 2020/175 149 33 卩 (：171? 2020 /005483

Includes some or all of the CQs (or the second CQs) under I. The second part includes part or all of the first C R I, the first R I, and the first CQ. The third part includes part or all of the first P M I and the second P M I.

[0131] Note that the terminal device may divide the report into two parts for each of the first CR-based CS index and the second CR-based C S index. The two parts of the CS based on the first CR I are also called the first part 1 and the first part 2. Also, the two parts of the CS based on the second C R are also called the second part 1 and the second part 2. The first part 1 includes a part or all of the first C R I, the first R I, and the first C Q 丨. In addition, the first part 2 includes the first PM. Further, the second part 1 includes a part or all of the second C R 丨, the second R 丨, and the second CQ 丨. The second part 2 also includes the second PM I. The priority of CSI can be set higher in the order of the second part 1, the first part 1, the second part 2, and the first part 2. At this time, the terminal equipment will report a long-cycle (small change) CSI with the second CR and the first CR, and the base station equipment and the terminal equipment will report the first CR I and the second CR I. You can communicate using the minimum parameters for CR I. In addition, the priority of CSI can be set higher in the order of the second part 1, the second part 2, the first part 1, and the first part 2. At this time, the terminal device preferentially reports the complete CS information in the second CR, so that the base station device and the terminal device can communicate using the detailed parameters regarding the second CR I. ..

[0132] The terminal device 4A may receive an interference signal (adjacent cell interference) from an adjacent cell in addition to the serving cell. The interference signal is the P DSCH, P DCCH, or reference signal of the adjacent cell. In this case, it is effective to remove or suppress the interference signal in the terminal device. As a method of removing or suppressing the interference signal, the channel of the interference signal is estimated and suppressed by the linear weight E—MMS E (Enhanced-Minimum Mean Square Error), and a replica of the interference signal is generated and removed. Interference canceller, searches for desired signal and transmission signal candidate of interference signal and searches for desired signal 20/175149 34 卩 (: 171? 2020 /005483

It is possible to apply ML D (Maximum Likelihood Detection) for detecting a signal, R— ML D (Reduced complexity-MLD) in which transmission signal candidates are reduced to have a lower calculation amount than ML D. In order to apply these methods, it is necessary to estimate the interference signal channel, demodulate the interference signal, or decode the interference signal. Therefore, in order to efficiently remove or suppress the interference signal, the terminal device needs to know the parameters of the interference signal (adjacent cell). Therefore, the base station apparatus can transmit (set) the assist information including the parameter of the interference signal (adjacent cell) to the terminal apparatus in order to assist the terminal apparatus in removing or suppressing the interference signal. One or more sets of assist information are set. The assist information includes, for example, physical cell ID, virtual cell D, power ratio between reference signal and P DSC H (power offset), reference signal scrambling identity, Q Cl-information (quasi co-location i nformat i on). ), CSI — RS resource setting, CSI — RS antenna port number, subcarrier interval, resource allocation granularity, resource allocation information, DMRS setting, DM RS antenna port number, number of layers, TDD DL/UL configuration, PM 丨, R Includes some or all of MCS (Modulation and coding scheme). The virtual cell D is a virtual D assigned to the cell, and the physical cell D may be the same and the virtual cell D may be a different cell. QCL information is information on QCL for a given antenna port, a given signal, or a given channel. At two antenna ports, if the long-term characteristics of the channel carrying the symbols on one antenna port can be inferred from the channel carrying the symbols on the other antenna port, then those antenna ports are QCs. Called L. The long-term characteristics include delay spread, Doppler spread, Doppler shift, average gain, average delay, spatial reception parameter, and/or spatial transmission parameter. That is, when the two antenna ports are QCL, the terminal device can consider that the long-term characteristics at the antenna ports are the same. The subcarrier spacing indicates a subcarrier spacing of an interference signal or a candidate of subcarrier spacing that may be used in the band. It is included in the assist information. 〇 2020/175 149 35 卩 (：171? 2020 /005483

If the subcarrier interval used for communication with the serving cell is different from the subcarrier interval used, the terminal apparatus does not have to remove or suppress the interference signal. The subcarrier spacing candidates that may be used in the band may indicate the normally used subcarrier spacing. For example, the subcarrier interval that is normally used does not have to include the low-frequency subcarrier interval that is used for high-reliability/low-delay communication (emergency communication). The resource allocation granularity indicates the number of resource blocks whose precoding (beamforming) does not change.

Mapping type,

Shows the additional arrangement. Depending on

Resource allocation changes. For example,

Gutype 8 is the number one slot

Being bubbled. Also, for example,

Mapping type is not assigned

Mapped to the first 0 IV! symbol of the resource. 0

IV!3 additional placement indicates whether there is an additional mouth IV!3 placement, or the additional placement. It should be noted that some or all of the parameters included in the assist information are transmitted (set) by signals in the upper layer. Also, some or all of the parameters included in the assist information are transmitted as downlink control information. Further, when each parameter included in the assist information indicates a plurality of candidates, the terminal device blindly detects a suitable one from the candidates. The terminal device blindly detects parameters not included in the assist information.

[0133] When the terminal device communicates using a plurality of receiving beam directions, the surrounding interference situation greatly changes depending on the receiving beam directions. For example, an interference signal that is strong in one receive beam direction may be weak in another receive beam direction. The assist information of the cell, which is unlikely to be strong interference, is not only meaningless, but it may be useless in calculation when determining whether or not a strong interference signal is received. Therefore, it is desirable that the assist information be set for each receiving beam direction. However, since the base station device does not necessarily know the receiving direction of the terminal device, it suffices to associate the information related to the receiving beam direction with the assist information. For example, the terminal device may associate the reception beam direction with 〇 2020/175 149 36 卩 (：171? 2020 /005483

Therefore, the base station device can transmit (set) one or more pieces of assist information for each bird. In addition, since the terminal device can associate the time index of the synchronization signal block with the reception beam direction, the base station device must transmit (set) one or more assist information for each time index of the synchronization signal block. You can In addition, since the terminal equipment can associate 1\/1丨 (antenna port number) with the receiving beam direction, the base station equipment has one or more assist information for each 1\/1丨 (antenna port number). Can be sent (configured). In addition, when the terminal equipment has multiple sub-arrays, the receiving beam direction is likely to change for each sub-array, so the base station equipment transmits one or more assist information for each index associated with the sub-array of the terminal equipment. Setting) can be done. Also, when a terminal device communicates with multiple base station devices (transmission/reception points), the terminal device is likely to communicate with each base station device (transmission/reception point) in a different reception beam direction. Therefore, the base station device transmits (sets) one or more assist information for each information indicating the base station device (transmission/reception point). The information indicating the base station device (transmission/reception point) may be a physical cell port or a virtual cell port 0. Also, when different ports 1\/| [¾ 3 antenna port numbers are used for the base station device (transmission/reception point),

Antenna port number and mouth 1\/| [¾ 3 Information indicating the antenna group is information indicating the base station device (transmission/reception point).

[0134] Note that the base station device

The number of assist information set for each can be the same. Here, the number of assist information indicates the type of assist information, the number of elements of each assist information (for example, the number of cell mouth candidates), and the like. In addition, the base station device

The maximum value is set for the number of assist information to be set for each base station, and the base station device sets each of the assist information within the range of the maximum value.

Can be set to I.

[0135] When the receiving beam direction of the terminal device changes, the transmitting antenna is likely not XX!_. Therefore, the above assist information can be associated with 0 <3 !_ information. For example, the base station device transmits assist information for multiple cells (setting 〇 2020/175 149 37 卩 (：171? 2020 /005483

In this case, it is possible to instruct the terminal device that the cell is ◯ <31_ (or the cell that is not _31_).

[0136] Note that the terminal device is used for communication with the serving cell.

Interference signals are removed or suppressed by using the assist information associated with 丨.

[0137] In addition, the base station device uses the reception beam direction (○[¾丨 / time index of synchronization signal block / 1\/1丨 / antenna port number / subarray) associated with the reception beam direction ( ○ Assist information that is not associated with [¾丨 / time index of sync signal block / 1\/1丨 / antenna port number / subarray) may be set. Further, the assist information associated with the receiving beam direction and the assist information not associated with the receiving beam direction may be selectively used according to the capability or category of the terminal device. The terminal device capability or category may indicate whether or not the terminal device supports receive beamforming. Further, the assist information associated with the receive beam direction and the assist information not associated with the receive beam direction may be selectively used in the frequency band. For example, the base station device does not set the assist information associated with the reception beam direction at frequencies lower than 6° 1 ^to 12. Also, for example, the base station device

— Set the assist information associated with the direction.

[0138] Note that

It may be associated with the resource set setting port.

The base station device is

If you tell I the terminal,

With I resource set setting

You may instruct me. In addition,

丨Resource set setting I

When associated with one or one receive beam direction, the base station device may set the assist information for each 0 3 I resource set setting port.

[0139] The base station apparatus requests the terminal apparatus to measure the adjacent cell in order to know the adjacent cell associated with the reception beam direction of the terminal apparatus. The neighbor cell measurement request includes information related to the reception beam direction of the terminal device and the cell entrance. When the terminal device receives the neighbor cell measurement request, it

3 Measures and reports to the base station device together with information related to the reception beam direction of the terminal device. 〇 2020/175 149 38 卩 (：171? 2020 /005483

The information related to the reception beam direction of the terminal device is

Information indicating I, time index of synchronization signal block, sub-array of terminal equipment, or base station equipment (transmission/reception point).

[0140] Also, when the terminal device moves, the surrounding environment may change from moment to moment. Therefore, it is desirable for the terminal device to observe the surrounding channel condition, interference condition, etc. at a predetermined timing and report to the base station device. The report results will be reported as a regular report or an event report. In the case of regular reporting, the terminal equipment shall periodically

by

Set and report. In the case of an event report, the event account is associated with the reporting conditions. For example, there are the following event entrances, and the thresholds (threshold 1, threshold 2 if necessary) and offset values necessary for calculating the conditions are also set.

Event 1: When the measurement result of the serving cell becomes better than the set threshold.

Event 2: When the measurement result of the serving cell becomes worse than the set threshold.

Event 3: The measurement result of the adjacent cell is

II /? 306 6 When the measured result is better than the preset offset value.

Event 4: When the measurement result of the neighboring cell becomes better than the set threshold Event 5: 〇 6 丨

When the measurement result of I is worse than the set threshold value 1 and the measurement result of the adjacent cell is better than the set threshold value 2.

Event 6: When the measurement result of the adjacent cell is better than the set offset value than the measurement result of 30 6 丨丨.

Event 〇 1

When it becomes better than the set threshold.

Event 〇 2: 〇 3 _ [¾ 3 The measurement result of the resource is the configured reference 〇 3 〇 2020/175 149 39 卩(：171? 2020/005483

If the offset amount is better than the measurement result with the I 3 resource. Event 0 1:

Different from 丨 0 3 丨一

3 When the measurement result of the resource becomes better than the set threshold.

Event 0 2:

Related to 丨 0 3 丨 _

3 When the measurement result of the resource becomes worse than the set threshold.

Event 0 3:

When the measurement result of the receive beam direction that is not related to the 丨 becomes better than the set threshold value.

Event 0 4: When the measurement result of 3 3 block index used for synchronization becomes worse than the set threshold value.

Event 0 5: Not used for synchronization 3 3 When the measurement result of the block index becomes worse than the set threshold.

Event No. 1: When the time elapsed since the base station device decided the beam exceeded the threshold value.

Event No. 2: The time that has elapsed since the terminal device determined the beam exceeded the threshold.

[0141] When the terminal device makes a report based on the report setting, the measurement result is 3 3-

Report I.

[0142] FIG. 5 shows an example of an uplink communication system according to the present embodiment. The communication system shown in FIG. 5 includes a base station device 7, a base station device 9, and a terminal device 6. The terminal device 6 can use the base station device 7 and/or the base station device 9 as a serving cell. If the base station equipment 78 or base station equipment 98 is equipped with a large number of antennas, the large number of antennas can be divided into a plurality of subarrays (panels, subpanels), and transmission/reception beamforming can be performed for each subarray. Can be applied. In this case, each subarray can be equipped with a communication device, and the configuration of the communication device is the same as the base station device configuration shown in FIG. 2 unless otherwise specified. When the terminal device 6 is equipped with a plurality of antennas, the terminal device 68 can transmit or receive by beamforming. Well 〇 2020/175149 40 units (:171? 2020/005483) When the terminal device 6A has a large number of antennas, the large number of antennas can be divided into multiple subarrays (panels, subpanels) Each sub-array can be equipped with a communication device, and the configuration of the communication device is the same as the terminal device configuration shown in Fig. 3 unless otherwise specified. The device 7 A and the base station device 9 A are also simply referred to as a base station device, and the terminal device 6 A is also simply referred to as a terminal device.

[0143] In the uplink, S RS is used to determine a suitable transmission beam of the terminal device and a suitable reception beam of the base station device. The base station device can transmit (set) the setting information related to S RS by the signal of the upper layer. The configuration information includes one or more SRS resource set configurations. The SRS resource set configuration includes SRS resource set configuration D and/or one or more SRS resource configuration. SRS Resource set settings I D, SRS Used to identify SRS resource set settings. The SRS resource setting includes SRS resource setting D, SRS antenna port number, SRS transmission comb (Comb), SRS resource mapping, SRS frequency hobbing, and SRS resource setting type. SRS resource settings are used to specify SRS resource settings. The S RS transmit comb indicates the frequency spacing of the comb tooth spectrum and the position (offset) within the frequency spacing. The S RS resource mapping indicates the 〇 F D M symbol position and the 〇 F D M symbol number where the S R S is located in the slot. The S RS frequency hopping is information indicating the frequency hopping of the S RS. The SRS resource configuration type indicates the time domain behavior of the SRS resource configuration. Specifically, the SRS resource settings are set to send SRS aperiodically (aperiod ic), to send SRS periodically (periodic), or to send SRS semi-persistently. Indicates whether to set

[0144] When a plurality of SRS resources are set, the terminal apparatus can determine a suitable SRS resource by transmitting in different transmission beam directions in each SRS resource. The base station device uses S that is information indicating the SRS resource. 〇 2020/175 149 41 卩 (：171? 2020 /005483

By transmitting (instructing) the RS resource index (SRS Resource Index: SRI) to the terminal device, the terminal device can know that the transmission beam direction transmitted by the SRS resource is suitable. Note that the base station apparatus can request the terminal apparatus to transmit with the same transmission beam for a predetermined period in order to obtain a suitable reception beam of the base station apparatus. According to the request from the base station device, the terminal device transmits in the same transmission beam direction as that transmitted in the instructed S R S resource in the instructed S R S resource for the instructed period.

[0145] When the terminal device includes a plurality of subarrays, the terminal device can communicate with a plurality of base station devices (transmission/reception points). In the example of FIG. 5, the terminal device 6A can use the base station device 7A and the base station device 9A as serving cells. In this case, for the terminal device 6 A, the transmission beam direction suitable for communication with the base station device 7 A and the transmission beam direction suitable for communication with the base station device 9 A are likely to be different. Therefore, the terminal device 6A can communicate with the base station device 7A and the base station device 9A at the same timing by transmitting in different transmission beam directions in different subarrays.

[0146] When an SRS is transmitted by a plurality of antenna ports in a certain SRS resource, the terminal device can use different transmission beam directions for each antenna port. In this case, if the base station device instructs the terminal device to perform transmission with a suitable antenna port number, the terminal device can know the suitable transmission beam direction. Note that the base station apparatus can also instruct the terminal apparatus to transmit P M I (T P M I) using a codebook for selecting an antenna port. The base station device can instruct the terminal device which codebook to refer to. The terminal equipment can use the transmit beam direction corresponding to the antenna port number indicated by T P M I by referring to the indicated codebook.

[0147] When the terminal device includes a plurality of sub-arrays and can transmit at the same timing in the plurality of sub-arrays, different antenna port numbers can be assigned to the sub-arrays. At this time, the terminal equipment transmits SRS from the antenna ports of different subarrays using transmission beams and receives TPMI from the base station equipment. 〇 2020/175 149 42 卩 (：171? 2020 /005483

If so, the terminal can know the preferred sub-array and transmit beam direction. Therefore, the terminal equipment can associate the D/B with the sub-array and transmit beam direction.

[0148] When a terminal device communicates with multiple base station devices (transmission/reception points), the same signal (data) can be transmitted to each base station device (transmission/reception point), and different signals can be transmitted. (Data) can be sent. When the terminal device communicates with multiple base station devices (transmission/reception points) using the same signal (data), the signals received by multiple base station devices (transmission/reception points) are combined to improve reception quality. Therefore, it is desirable that a plurality of base station devices (transmission/reception points) cooperate with each other to perform reception processing.

[0149] The base station device

You can use 〇丨 for your scheduling. When a terminal device communicates with a plurality of base station devices, each base station device can transmit 0,000 for scheduling. 0 0 丨 is 3

The terminal device can know a suitable transmission beam for the base station device, including the information and/or 1//1. In addition, when a terminal device communicates with multiple base station devices, the USCH from one base station device (3 I can send USCH to multiple base station devices. For example, Control information for (codeword, transport block) is included and for each layer

When 丨 and/or 丨/1\/1丨 is instructed (set), each layer is transmitted with a transmission beam suitable for each base station device. As a result, the terminal device can transmit different signals (data) to multiple base station devices when it receives one 0 (3 I. In addition, port ◯ I has one layer. It contains control information and contains multiple 3

When 丨 and/or 丨/1\/1丨 is instructed (set), the terminal device transmits one layer (same data) using different transmission beams. This allows the terminal device to transmit the same signal (data) to a plurality of base station devices when receiving one 0 (31).

[0150] When the terminal device transmits to a plurality of base station devices at the same timing, 〇 2020/175 149 43 卩 (：171? 2020 /005483

It is desirable for each base station device to know the communication quality with the terminal device at the same timing. For this reason, the base station equipment has multiple ports with one port.

It is possible to instruct (trigger) 33 and the resources corresponding to each of the three. In other words, the terminal equipment is

By transmitting 33 in the transmit beam direction corresponding to I, each base station device can know the communication quality with the terminal device at the same timing.

[0151] When the sub-array provided in the terminal device uses only one transmission beam direction at the same timing, the sub-arrays are transmitted to a plurality of base station devices at different timings at the same timing. At this time, when the base station device directs (sets) two 38 丨 with one mouth,

Are associated with the same subarray, the terminal equipment

The transmission corresponding to I may not be possible. To avoid this problem, for example, the base station equipment

Set resources by dividing them into groups, and use the same subarray within the group.

The terminal can be requested to send a 3. In addition, if different subarrays are used between groups, the base station equipment can be configured with the same timing.

You can know the priest. In addition,

3 3 groups of resources are 3

3 Resource set is acceptable. In addition, it is possible to set at the same timing.

Resource) may not be OO!_. At this time, the terminal device associates 0 <3 !_ information with

Can be sent. For example, the terminal equipment is 〇〇 !_, not 3 3 and 〇〇 !_.

3 If 3 is distinguished and transmitted, the base station device

丨 is not set to the same timing and is not ◯◯!_ 3

You can set the same timing for 丨. Also, the base station apparatus may request 33 for each subarray of the terminal apparatus. In this case, the terminal equipment sends 3 3 for each subarray.

[0152] It should be noted that the terminal device is not able to transmit at the same timing from the base station device.

When 丨 is instructed, the terminal device can request the base station device for a beam recovery procedure for performing transmission beam selection again. The beam recovery procedure is performed by the terminal device transmitting/receiving beam to/from the base station device. 〇 2020/175 149 44 卩 (: 171? 2020 /005483

This is a procedure to be performed when the tracking quality is lost and the communication quality is significantly deteriorated. The terminal device needs to acquire a new connection destination (transmission beam of the base station device) in advance. The terminal device according to the present embodiment is in a state in which the transmission beam itself is secured, but in order to eliminate the state in which two SR boxes are set that cannot transmit at the same timing, the beam recovery Procedures can be used.

[0153] The terminal device according to the present embodiment can include a plurality of antennas (antenna panels) for which independent beam forming is set. The terminal device according to the present embodiment can use a plurality of antenna panels. Naturally, the terminal device can switch and use the plurality of antenna panels, but if the antenna panels are not properly selected, the transmission quality will be significantly reduced, especially in high-frequency transmission. Therefore, the terminal device can perform beam scanning (exploration) with the base station device in order to select the beam forming set for the antenna. The terminal device according to the present embodiment can transmit S R S in order to perform the beam scanning.

[0154] The base station apparatus according to the present embodiment can notify the terminal apparatus of information indicating duality (relationship, reciprocity) regarding downlink (uplink) and uplink (channel) propagation characteristics. .. As information on the propagation characteristics, the base station device provides beam correspondence (Beam Cor response, spatial related (Spatial relat ion), spatial related information (Spatial relat ion on format), reception parameter). The information shown can be notified to the terminal device. Here, the beam correspondence is defined as the reception beamforming (spatial domain reception filter, reception weight, reception parameter, reception spatial parameter) used when the terminal device receives the downlink signal, and when transmitting the uplink signal. It includes information indicating the relationship between the transmit beamforming used (spatial domain transmit filter, transmit weight, transmit parameter, transmit spatial parameter).

The base station apparatus can set the beam correspondence for each signal transmitted by the terminal apparatus. For example, the base station device uses a beam pair for the SRS transmitted by the terminal device. 〇 2020/175 149 45 卩 (：171? 2020 /005483

Information indicating the response can be notified to the terminal device. The base station apparatus can notify the terminal apparatus of the SRS space-related information (SRS-SpatiaIReIationInfo). When the SRS space related information indicates a predetermined signal (value, state), the terminal device can perform SRS transmission using the beamforming method associated with the predetermined signal. For example, if the S RS spatial related information specifies the synchronization signals (SS B and P BCH), the terminal device transmits the S RS using the receive beamforming used when receiving the synchronization signal. be able to. Similarly, the base station device may use other signals (for example, P UCCH/P USCH/RS/RACH, etc.) transmitted by the terminal device or other signals (for example, P DCCH/P DSCH/RS) received by the terminal device. ) Related spatial information can be notified. That is, the base station apparatus can notify the terminal apparatus of the space-related information of the first signal and the second signal. When the terminal device receives the spatial related information of the first signal and the second signal and recognizes that the spatial related information is guaranteed to be spatial related between the first signal and the second signal. , It is possible to transmit the second signal (or receive the second signal) by using the reception parameter that received the first signal (or the transmission parameter that transmitted the first signal).

[0156] QCL includes at least the following four types, and the parameters that can be regarded as the same are different. The base station device and terminal device can set any one of the following QCL types between antenna ports (or signals associated with antenna ports), and can set multiple QCL types at the same time. It can also be set.

QCL t y p e A :D o p p l e r s h i f t, D o p p l e r s p r e a d, a v e r a g e d e l a y, d e l a y s p r e a d

QCL t y p e B :D o p p I e r s h i f t, D o p p l e r s p r e a d

QCL type C: D opp I ershift, averagedelay 〇 2020/175 149 46 卩 (：171? 2020 /005483

QCL t y p e D :S p a t i a I R x

[0157] When the resource of P DSC H is scheduled using downlink assignment, the terminal device can set reception beamforming for receiving the P DSCH. At this time, the terminal device can acquire the information associated with the reception beamforming from the DC information in which the downlink assignment is described. For example, the terminal device can obtain a transmission configuration indication (TCI) from the DC. TC indicates the information associated with the QCL for the antenna port where the P DSC H was sent. The terminal device can set the reception beamforming for receiving the P DS CH (or the DMRS associated with the P DSCH) by reading the TC I. For example, if the DMRS associated with the SSB and P DSCH is set as QCL for the reception parameter in the TC, the terminal device uses the receive beam used when receiving the SSB of the index fed back to the base station device. , PD SCH can be used for reception. If the DCI cannot be obtained in time before the terminal device starts receiving P DSCH (before the frame including the P DS CH is received by the terminal device) (the time difference between the scheduling information and P DSCH is In the case where the value of the scheduling offset shown is less than the predetermined value), the terminal device can receive the P DSCH according to the default setting TC I default. Note that TC I-d e f au It is one of the 8 TCs set. Also, the terminal device can set the reception beamforming based on the setting of TC d e f a u I t when receiving P DCC H.

[0158] In order to determine a suitable transmission beam for the base station apparatus, a codebook in which candidates for a predetermined bricoding (beamforming) matrix (vector) are defined is used. The base station device transmits CS I-RS, the terminal device obtains a suitable precoding (beamforming) matrix from the codebook, and reports it to the base station device as PMI. This allows the base station device to 〇 2020/175 149 47 卩 (：171? 2020 /005483

The transmit beam direction suitable for the end device can be known. The codebook has a bricoding (beamforming) matrix that combines the antenna ports and a bricoding (beamforming) matrix that selects the antenna ports. When a codebook that selects antenna ports is used, the base station device can use different transmission beam directions for each antenna port. Therefore, if the terminal device reports a suitable antenna port as 1\/1 I, the base station device can know the suitable transmission beam direction. A suitable receiving beam for the terminal device is

The receive beam direction associated with the bird may be used, or a suitable receive beam direction may be determined again. When using a codebook that selects antenna ports, the preferred receive beam direction of the terminal device is

Given the receive beam direction associated with I,

Receive beam direction is

[0159] The terminal device according to the present embodiment has a plurality of

Notify I. The terminal device according to the present embodiment notifies the base station device of 1\/1 I 1, which is the first 1\/1 I, and 1\/1 I 2, which is the second 1\/1 I. You can

[0160] IV! 丨 1 is the IV! 丨 which is the 11th IV! 丨, 1!/ 1 丨 1 2 which is the IV! It can be 1\/1 丨 13 which is /1 丨 and 1\/1 丨 1 4 which is 1\/1 丨 of the 14th.

[0161] 1\/1 1 11 is an element related to the first dimension 1 (1\ 1 of 1 1 1 1

I, 1\/1 丨 1 1 1) and the second dimension element 92 (1 1 1 2 IV!

I, !\/1 丨 1 1 2) can be configured. 1 is the first dimension vector 〇 2020/175 149 48 卩 (: 171? 2020 /005483

The orthogonal matrix referenced by V, which is the The orthogonal matrix referenced by V is the first matrix provided in the base station device.

The base station device performs 0-numbered sampling for the first dimension on the 0-dimensional matrix given by the number 1\1 1 of that number. You can This means that there are only 0 1 orthogonal matrices referenced by V, so 1 is an index that indicates the orthogonal matrix referenced by V among 0 1 orthogonal matrices. On the other hand, 2 is an index for the orthogonal matrix referenced by the second-dimensional vector, Li. The base station equipment is the second dimension 0 3 I

Po

-For a 0-matrix given by the number of squares 2, it is possible to perform sampling for the second dimension by a sampling number of 0 2. 9 2 is an index indicating the orthogonal matrix referred to by V among the 0 2 orthogonal matrices. When the terminal device performs feedback assuming multiple layers, the orthogonal matrix indicated by 1\/1 1 can be shared by the layers. The terminal device according to the present embodiment can also notify 1\/1111 1 for each layer.

[0162] 1\/1丨12 can be an index indicating at least one of a plurality of vectors included in the matrix selected by 1\/1丨11. The terminal device can notify the base station device of the vector given by the Kronecker product of V which is the vector of the first dimension and V which is the vector of the second dimension. Since L i and V are vectors selected from 0-matrices of size 1\1 1 and size 2, respectively, there are only 1\! 1 2 vector candidates given by the Kronecker product of V and l. Furthermore, the terminal device according to the present embodiment can feed back a plurality of vectors given by the Kronecker product of V and L to the base station device. The number of vectors that can be fed back by the terminal equipment is set by the base station equipment according to 1-1 (1_1, first value) indicating the first vector number. !! _ 1 can be notified to the terminal device by higher layer signaling. Therefore, the candidates for the combination of vectors that the terminal device feeds back to the base station device are the combinations when selecting only 0 (X, S0) from the population X. 〇 2020/175 149 49 卩 (：171? 2020 /005483

When using a combination function that indicates the number of combinations,

1_) only exist. 1\/1 丨 12 can be an index that indicates any one of the vector combination candidates that exist only 〇 (1\11 1\11, !_). The base station apparatus according to this embodiment can include a polarization antenna, but the vectors selected in 1\/1 and 12 can be common. Also, as with 1\/1 I11, the terminal device can be shared between layers for 1\/1 I12. In addition, the terminal device can notify 1\/1丨12 between layers.

[0163] The base station device sets the value of !_ 1 to 03 I

It can be set based on the number of ports of 3. As will be described later, the base station device sets the value of !_ 1 to 03 丨.

It can also be set based on information other than the number of ports in.

[0164] 1\/1丨13 can be an index indicating the strongest vector for the terminal device among the !_ 1 vectors notified by 1\/1丨12. In addition, when the base station equipment is equipped with a polarization antenna, it is the index showing the strongest vector among the 2 x 1_1 vectors, including between polarizations. The terminal device can notify 1\/1 I 13 to the base station device for each layer. The terminal device according to the present embodiment can also select one layer and notify the strongest vector in the layer. In this case, the terminal device can also notify the selected layer to the base station device. Also, the terminal device can always notify the strongest vector in Layer 1.

[0165] 1\/1丨14 is an index indicating the amplitude coefficient that can multiply !_ 1 vector specified by 1\/1丨12. Note that 1\/1 I 1 4 can also calculate the amplitude coefficient for each polarization, so in this case, !\/1 1 1 4 multiplies (2X1-1) vectors. It is an index showing the amplitude coefficient.

[0166] The amplitude coefficient can be a value obtained by dividing 0 to 1 with a predetermined granularity. For example, using the information of the terminal device 3 bits according to the present embodiment, 0, 64 ^1/2, 32 ^1/2, 1 6 ^1/2, 8 ^1/2, ^{4-1 /} Any of ² , 2, ^1/2 , or 1 is used as the amplitude coefficient for the (2X1-1) vector indicated by IV! I 1 2 as the base station. 〇 2020/175 149 50 卩 (：171? 2020 /005483

The device can be notified. The terminal device can notify 1\/1 I 14 for each layer. Also, the terminal device according to the present embodiment can notify 1\/111 4 as a common value between layers. 1\/1 丨 14 is the (21__ 1) number of elements (1< ⁽ . (1\/1 1 of 1st 4 (0) 1 , 1\/1 1 1 4 (0) ), ⑴! (No. 1 of 4 (1) 1\/1 1

1\/1 丨 1 4 (2 !_— 1 )). Also, each element can be defined for each layer.

[0167] 1\/1丨21 can represent the phase coefficient for (2 X !_ 1) vectors shown by 1\/1丨12. The phase coefficient can be an angle obtained by dividing an angle of 360 ^° into a predetermined granularity. For example, when 360 ^° is divided into four, the terminal device may notify the base station device as one of the phase coefficients indicating the four angles of 0°, 90°, 180°, and 270°. it can. The base station device can notify the terminal device of 3 <as a value indicating the granularity of the phase coefficient. The base station device can notify any one of 2, 4 and 8 with 3 <. The terminal device can notify 1\/1 I 2 1 to the base station device for each layer. Also, the terminal device can notify the base station device of a value that is common between layers of 1\/1 1 21.

[0168] 1\/1丨22 can represent the amplitude coefficient for (2 X !_ 1) vectors shown by 1\/1丨12. 1\/1 1 1 4 can also show the amplitude coefficient, but in IV! 22, the amplitude coefficient can be shown for each subband. Therefore, the terminal device can feed back 1\/1 of 22 when the base station requests 03 of feedback for each subband. The terminal device can notify IV! I 22 to the base station device for each layer. In addition, the terminal device can notify the base station device of a value common between layers of IV! 1\/1

Element (|< ⑵. (1\/1 I, 1\/1 I 22 (0) of 22nd (0)), 1< ⑵] (!\/1 1, !\ of 2nd 2 (1)) /1 1 22 (1) .⑴ —】 (No. 22 (2 !_ 〇 2020/175 149 51 卩(：171? 2020/005483

-1) 1\/1 1, 1\/1 1 2 2 (2 1_-1)). Each element of IV! I 22 can be defined for each layer.

[0169] The terminal device according to the present embodiment is

As I, it is possible to notify the base station device of a rank index (8) that indicates the number of layers desired for the device itself. The terminal device according to the present embodiment uses the IV!

I can change the feedback.

[0170] The terminal device is _〇3I

Based on a reference signal such as

To notify. The terminal has I> 1

When I is fed back to the base station apparatus, the terminal apparatus feeds back IV! 丨 according to the number of birds to the base station apparatus. If you do not set 1\/1 丨 to feedback,

Even if 丨> 1, IV! 丨 does not need to give feedback. The terminal device becomes 丨> 1

Feeding back the information to the base station equipment suggests that the propagation environment is an environment in which high throughput can be expected, but at the same time, the feedback related to IV! Is likely to increase.

[0171] The terminal device can feed back 1\/1 I and 0 <3 I described above for each subband. By the terminal device feeding back 1\/1 and 〇〇 for each subband, the base station device can obtain accurate channel state information even in a channel environment with frequency selectivity. It is possible to obtain. However, when the number of subbands is N 3, it means that the amount of information fed back by the terminal device is simply tripled. In particular, 1\/1 I has a large amount of information fed back as described above, and the increase in the amount of feedback information due to feedback for each subband cannot be ignored.

[0172] Therefore, the terminal device according to the present embodiment can utilize the fact that channels having frequency selection have some degree of frequency correlation, and can compress and feed back 1\/1 1 in the frequency domain. Is. The terminal device transforms the channel response into an impulse response of the channel by performing an inverse discrete Fourier transform on the channel response estimated in the frequency domain. The impulse response of the propagation path is 〇 2020/175 149 52 卩 (：171? 2020 /005483

Since the delay time is less than the maximum delay time of the delayed wave, the amount of feedback information can be compressed by feeding back the impulse response rather than directly feeding back the estimated channel response in the frequency domain. In the following, compression of the amount of information by applying a predetermined conversion to the frequency response of the propagation path is also referred to as frequency domain compression (FD compression).

[0173] The following example can be considered as a method of performing FD compression on the PM I described above. The terminal device multiplies the PM base calculated for each of the N 3 subbands by an orthogonal basis of size N 3. The orthogonal basis assumed here is not limited to anything, but the case of using the discrete Fourier transform matrix (D F T) matrix Wf will be described below as an example. As a matter of course, a matrix composed of information negotiated between the base station device and the terminal device can be Wf assumed in the present embodiment. For example, you can use DCT matrix or Wa 侨 s h matrix.

[0174] Note that the following description will be made assuming compression in the frequency domain, but the dimension in which PM I are arranged is not limited to the frequency direction. The method of the present embodiment is also established when the terminal device according to the present embodiment applies the orthogonal basis to the matrix generated by arranging P M l in the dimension in the time direction or the space direction.

[0175] Now, W calculated by the terminal device using W1 and W2 is a vector of 2 N 1 N 2 rows and 1 column, where the number of ranks is 1. The terminal device feeds back W to the base station device by feeding back PM 1 and PM 2 described above. When the terminal device calculates W for N 3 subbands and arranges them in the column direction, the matrix W a of 2 N 1 N 2 rows and N 3 columns is naturally obtained. Here, the terminal device multiplies WaCWf. Then, of course, WaWf becomes 2 N 1 N 2 -by- N 3 matrix. However, the amount of feedback information is not compressed when the terminal device simply feeds back WaWf. However, as mentioned above, the frequency response of the transmission path has some degree of frequency correlation. Also, since the frequency relationship is determined by the delay profile of the propagation path, the 〇 2020/175 149 53 卩(：171? 2020/005483

It is common. This means that the power of \ZV a W f does not spread over the entire response of \ZV a W f, but the power is concentrated in part. Therefore, the terminal device feeds back only IV! «N 3) responses of the \ZV a W f response to the base station device, compressing the amount of Fordback information,

The information contained in can be fed back efficiently. The terminal device reports the † basis (that is, IV! vectors) corresponding to the 1\/1 response to be fed back, and the base station device is fed back.

It is possible to obtain

[0176] However, the terminal device feeds back.

If the number of ranks of 丨 increases, the amount of feedback information will increase even if 0 compression is performed. Therefore, in the base station device and the terminal device according to the present embodiment, the terminal device feeds back.

Based on the information, it is possible to control the information related to the feedback.

[0177] The accuracy of 0 3 I that can be grasped by the base station device depends on the size of IV!. Of course, if the size of IV! is large, the base station device can grasp 0 3 I with high accuracy, but the amount of feedback information will increase. Therefore, the base station device and the terminal device according to the present embodiment are classified by the size of IV!

To control.

[0178] The base station apparatus sets the size of IV! to the terminal apparatus in the upper layer signaling (for example,

○ Signaling) and downlink control information (for example, mouth ○ I and aperiodic ○ 3 I trigger) can be used for notification. In this way, the 0-value n: 1: size set by the base station device is also called IV! 1. The terminal device gives feedback if the size of the acquired IV! 1 exceeds the specified value or if it matches the specified value that is set in advance.

The value can be set to a value lower than a predetermined value or a predetermined value.

[0179] Further, in the terminal device according to the present embodiment, the terminal device feeds back even if there is a value of IV! 1 set by the base station device.

You can change the value of IV! For example, the base station device uses 1\/1 1 as shown above. 〇 2020/175 149 54 卩 (：171? 2020 /005483

〇 It can be set to the terminal device as un I 1 size, but when the feedback value exceeds a predetermined value, the terminal device does not use IV! 1 which is quasi-statically or dynamically set and It is possible to use the fixed value 1\/10 with the base station device. However, when the number of ranks exceeds a prescribed value, it is preferable for the terminal device to reduce the value of IV!, so that the preset value of 1\/10 is more quasi-static or dynamic than the base station device. If IV! 1 set by default is small, the terminal device can use 1\/1 1 as 〇 un I 1: size instead of IV! 0. By controlling in this way, it is possible to prevent the amount of feedback information from increasing when the terminal device performs high rank 0 3 I feedback.

[0180] The base station apparatus according to the present embodiment can limit the number of ranks to be considered when the terminal apparatus feeds back, to the terminal apparatus. The base station device may signal higher layer signaling (eg

(Since then,

8) It is also called restriction information))), and the number of ranks considered by the terminal device can be restricted. On the other hand, the base station equipment

It is possible to notify the terminal device by the upper layer signalling such as.

[0181] Therefore, when the codebook setting indicates the type 2 codebook, the base station apparatus according to the present embodiment uses the upper limit of the number of ranks considered by the terminal apparatus. The value of _ 1 can be set. That is, the upper limit of the value of !_ 1 that can be notified by the base station device changes depending on whether the number of ranks considered by the terminal device exceeds a predetermined value. For example, if the base station device sets the upper limit of the number of ranks considered by the terminal device to 2 by higher layer signaling (for example, codebook setting), the base station device sets the upper limit of the value of 1-1 to 4. You can If the base station equipment sets the upper limit of the number of ranks considered by the terminal equipment to 4 by higher layer signaling (codebook setting), the base station equipment shall set the upper limit of the value of !_ 1 to 2. Can be done.

[0182] Further, the terminal apparatus uses the upper layer signaling from the base station apparatus to

The value of !_ 1 can be acquired (determined). The terminal device according to the present embodiment, 〇 2020/175 149 55 卩 (：171? 2020 /005483

The value of 1_ 1 can be read according to the value of the feedback. That is, the terminal device considers the value of 1-1 based on whether or not the feedback value exceeds a predetermined value, using the value notified by the base station device itself or the base station device. It is possible to decide whether to use a value smaller than the reported value (second !_ value, second value). For example, if the terminal device is Consider the case where 4 is set as the value of _ 1. If the predetermined value is 2, the terminal device

When debugging,! Calculate the other feedback values by referring to the value of _ 1, but the terminal device

When performing feedback, other feedback values can be calculated as the second !- value (that is, a value smaller than the !_ 1 value notified by the base station device).

[0183] Depending on the value of [¾丨 above! The method of limiting the value of _ is [maximum value of ¾

Whether to set or not can be selected by the maximum value of 1-1. Hereinafter, the same applies to any of the methods described in the present embodiment.

[0184] The terminal device can notify the base station device of the information referred to by the terminal device by feeding back 1\/1 1 1 1. For example, IV! I 11 can notify the base station device of a matrix composed of a plurality of vectors. The base station device can limit the information referred to by 1\/1 1 11 by higher layer signaling. For example, if there are 4 patterns of 1\/1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Candidates (ie matrix candidates) together, the base station device may Among the patterns, candidates that do not need to be considered can be notified by a bit map.

[0185] The base station apparatus according to the present embodiment can further limit the information notified by 1\/1111. For example, when 1\/1 丨 11 indicates a matrix composed of multiple vectors, the base station device uses the upper layer signaling (or the control signal of the mouth etc.) The candidates that do not need to be considered by the terminal device among the multiple vectors that make up the matrix are identified by the bit map. 〇 2020/175 149 56 卩 (：171? 2020 /005483

Can be notified. For example, if the information indicated by 1\/1 1 1 1 indicates four vectors, the base station device needs to consider to the terminal device one of the four vectors concerned. The candidates for can be notified by a bit map. Needless to say, when a vector that does not need to be considered by the terminal device is generated, the amount of information fed back by the terminal device can be reduced based on that.

[0186] Note that the method of limiting the information amount of 1\/1 1 11 described above is based on the value of the value fed back by the terminal device, or the feedback-enabled value that the base station device notifies the terminal device. The upper limit value may determine whether or not to set,

It may be set for each item. For example, the terminal device notifies the terminal device when the above-mentioned restriction for 1\/1丨11 is set by the base station device.

When the value of 丨 exceeds a predetermined value (for example, 2), IV! 丨 1 1 can be fed back in consideration of the above information amount limitation. In addition, when the base station device has set a limit, if the maximum value of the limit set by the [¾ limit exceeds a predetermined value, the above information amount limit is taken into consideration. I 1 1 can be fed back.

[0187] In addition, the base station device also receives 1\/1 1 by the signaling of the upper layer.

14 candidates can be restricted. 1\/1丨14 can indicate the coefficient (amplitude coefficient, amplitude weight) to be set for each vector selected by 1\/1丨12, but the base station equipment does not Can set the maximum value of the coefficient.

[0188] The terminal device according to the present embodiment notifies

The maximum value of the coefficient can be changed according to the value of 丨. For example, if the maximum value of the coefficient is set to 1 from the base station apparatus by the upper layer signaling, the terminal apparatus sets As a value smaller than 1 (for example, 2−i/ ² ), 1\/1丨14 can be calculated and can be fed back to the base station device.

[0189] Also, the base station apparatus does not limit the maximum value of the amplitude coefficient, but rather the terminal apparatus. 〇 2020/175 149 57 卩(：171? 2020/005483

Can limit the candidate value of the amplitude coefficient that can be fed back. For example, if eight amplitude coefficient candidates that can be fed back by the terminal device are set, the base station device can limit the candidate value of the amplitude coefficient that the terminal device considers by using an 8-bit bit map. it can.

[0190] The base station device notifies the phase coefficient candidates to which the terminal device is fed back at 1\/1 I2 1.

Determined by Base station equipment is 1\1

As a candidate for

, {2, 4, 8} can be considered.

The phase difference (angle difference) between the candidate phase coefficient values fed back by the terminal device changes depending on the value of

Is the phase difference.

[0191] The base station device can limit candidates for the phase coefficient considered in 1\/1 I2 1. The base station device according to the present embodiment,

Due to restrictions, if the upper limit of the value of 8 terminals considered by the terminal device exceeds the specified value,

You can limit the value of. For example, if the base station device has a limit above 2,

You can set the value of to 4 or less. Also, the terminal device is fed back.

If the value of 丨 exceeds the specified value, consider

The value of can be changed. For example, from the base station device

Have been notified by

If the value of is 8 and the value of the feedback from the terminal device is more than a predetermined value (eg 2) (eg 3),

You can compute and feed back 1\/1 丨 2 1 with a value of 4 (ie less than the value reported by).

[0192] Also, the base station apparatus can limit candidates for the phase coefficient to be considered in 1\/1 1 by a bit map. For example, if the base station device sets (^ ^ <= 8, it is possible to limit the phase coefficient that the terminal device considers at 1\/1丨21 by using an 8-bit bit map.

[0193] Further, the subband in which the phase coefficient is fed back may be limited. For example, the base station apparatus can set the frequency density for feeding back the phase coefficient by higher layer signaling (for example, codebook setting). For example, the frequency densities are 1, 2, and 3. If the frequency density is 1, the terminal device 〇 2020/175 149 58 卩 (：171? 2020 /005483

, Feed back the phase coefficient in all subbands. When the frequency density is 2, the phase coefficient is fed back to every two subbands. When the frequency density is 3, the phase coefficient is fed back at a rate of 1 to 3 subbands. Therefore, if the number of subbands to be fed back decreases depending on the frequency density, the amount of feedback information decreases.

[0194] The terminal device can notify the amplitude coefficient (also referred to as the subband amplitude coefficient) for each subband by IV! I22. However, since feedback is provided for each subband, the feedback-related feedback is extremely large. Therefore, the base station apparatus according to the present embodiment can set whether or not to permit feedback for each subband, based on the value of the value notified by the terminal apparatus. That is, the base station device is notified by the terminal device.

Notification of the amplitude coefficient for each subband can be permitted to the terminal device only when the value of 丨 is less than or equal to a predetermined value.

[0195] Further, the subband in which the subband amplitude coefficient is fed back may be limited. For example, the base station apparatus can set the frequency density for feeding back the subband amplitude coefficient by higher layer signaling (for example, codebook setting). For example, the frequency densities are 1, 2, and 3. When the frequency density is 1, the terminal device feeds back the amplitude coefficient in all subbands. When the frequency density is 2, the amplitude coefficient is fed back to every two subbands. When the frequency density is 3, the amplitude coefficient is fed back at a rate of 1 to 3 subbands. Therefore, if the number of subbands to be fed back decreases due to the frequency density, the amount of feedback information decreases. The frequency density of the phase coefficient and the subband amplitude coefficient described above may be the same or different. The frequency density of the sub-band amplitude coefficient is used when the sub-band amplitude coefficient is ◯!\1 in the upper layer signaling (eg codebook setting). When the subband amplitude coefficient is ◯, the amplitude coefficient is not considered in all subbands.

[0196] Further, in order to reduce the amount of information, an amplitude coefficient (amplitude coefficient of the wideband, or 〇 2020/175 149 59 卩 (：171? 2020 /005483

The sub-band amplitude coefficient) may be common between spatial layers. For example, if the base station device sets the information that makes the amplitude coefficient common between the spatial layers in the signaling of the upper layer (for example, codebook setting), the terminal device

Report one amplitude coefficient in the I report (however, 〇 3 I part 1 and 0 3 I part 2 are included).

[0197] Note that the information amount reduction method described above is basically set quasi-statically by the base station apparatus by signaling of the upper layer, or arranged in advance with the terminal apparatus, that is, It can be fixedly set. The base station apparatus according to the present embodiment can also dynamically notify the terminal apparatus of information related to the information amount reduction method.

[0198] The base station apparatus according to the present embodiment can describe information related to the information amount reduction method in a trigger that requests the terminal apparatus for 0 3 I feedback. That is, it is possible to describe information related to the information amount reduction method in the mouth ◯ I that is the trigger for requesting I feedback. In addition, the base station device sets a plurality of information amount reduction methods in advance for the terminal device, and sets a plurality of preset information for the port ◯ I that is a trigger for requesting ¢ 3 I feedback. It is possible to include information indicating which of the information amount reduction methods should be considered in the relevant 0 3 I feedback.

[0199] The base station apparatus according to the present embodiment is

I It is possible to notify the terminal device of the elements required for feedback. For example, the base station device may provide the terminal device with information indicating which of the IV! s constituting the first 1\/1 I and the second 1\/1 丨 is included in the 0 3 丨 feedback. Can be notified by mouth (3 I or higher layer signaling).

[0200] With respect to the information amount reduction method described above, the base station apparatus can be set to be common to the terminal apparatus between layers, or can be set for each layer. That is, if the terminal device is

When performing feedback, the information amount reduction method is not performed for 1\/1 I corresponding to Layer 1 and Layer 2, and the information amount reduction method is used for IV! I corresponding to Layer 3. 〇 2020/175 149 60 卩(：171? 2020/005483

It is possible to make settings such as performing the law. The base station device can set to the terminal device whether or not to set the information amount reduction method for each layer, and notifies the terminal device of the maximum number of layers to start considering the information amount reduction method. can do. If the maximum number of layers to start considering the information amount reduction method is set to, for example, 3, the terminal device does not perform the information amount reduction method for 1\/1丨 corresponding to Layer 1 and Layer 2, and For !\/1 I corresponding to 3, it is possible to set such that the information amount reduction method is used.

[0201] The base station device can notify !_ 1 to the terminal device. !! A large value of _ 1 means that the number of vectors that can be synthesized increases, so it is possible to feed back with a high degree of precision of 0,3, but of course,

The talent related to the feedback of 丨 will also increase. Therefore, the base station apparatus according to the present embodiment can set the value of !_ 1 in association with the value associated with other 0 3 I feedback. For example, the base station apparatus, IV!丨1 1 1 (1 \ / 1 I 1 1 2) 1 \ 1 ₁ and consider the value and 1 \ / 1 I 1 2 in consideration 〇 ₁ (〇 ₂₎ depending on the 1 \ 1 ₂ of value,! The value of _ 1 can be set. For example, the base station device can determine the maximum value of 1_ 1 that can be set based on whether or not either 1\1 ₁ or 1\1 ₂ or both of them exceed a predetermined value.

[0202] Note that the number of vector candidates that can be selected with 1\/1 丨 1 2 is given by the product of 1\1 ₁ and 1\1 ₂ , so the value of 1_ 1 is 1\1 It can be less than or equal to the product of ₁ and 1\1 ₂ . The base station apparatus according to this embodiment, 1-a 1 value may be a value exceeding the value of the product of N ₁ and 1 \ 1 _2. This means that the terminal device can select the same vector according to 1\/1丨12. By setting in this way, the terminal device can flexibly set the amplitude coefficient that can be set to the vector selected by 1\/1 I 1 2 even if there are few amplitude coefficient candidate values that are fed back by IV! I 1 4. Can be changed (simply thinking, selecting the same vector and performing simple addition corresponds to multiplying the vector by the amplitude coefficient 2).

.. Therefore, even if the feedback amount related to 1\/1丨14 is reduced (for example, the candidate value is reduced by the bit map), the deterioration of the feedback accuracy is maximized. 〇 2020/175 149 61 卩(：171? 2020/005483

It is possible to set a small limit.

[0203] Also, the subband size (the number of subbands) for which the terminal device calculates IV! When the number of subbands for which the terminal device calculates 0 0 I is N 4, the base station device sets 3 = 4 /[¾ for the number of subbands 3 for which the terminal device calculates 1\/1 I The base station apparatus can notify the terminal apparatus of. The base station device can be set to [¾ = 2 for the terminal device, and in this case, the granularity of the frequency at which the terminal device calculates 1\/1 I can be reduced. On the other hand, depending on the granularity of the frequency at which the terminal device calculates IV! I, the value of IV! that the terminal device considers can also be changed. For example, the base station device sets the value of IV!

Can be increased in proportion to.

[0204] On the other hand, as described above, when the value of IV! is increased, the amount of information fed back by the terminal device increases. Especially,

If the heli is large, the impact will be even greater. Therefore, the terminal device according to the present embodiment is

Is set to a value larger than a predetermined value (eg [¾ = 1) (eg [¾ = 2), it is larger than the predetermined value

It can be set to not perform feedback, where 0 (eg >2). It is preferable that IV! be set small in order to suppress the amount of feedback information when the terminal device performs high-rank 0 3 I feedback. When IV! is reduced, even if the frequency granularity of !\/1 I becomes smaller, the efficiency of frequency domain compression does not improve, so if the terminal device is set to a value greater than the specified value, For this reason, it is preferable not to carry out high-ranking feedback. When the base station device sets a value larger than a predetermined value (eg, [¾ = 2) in the terminal device, the base station device can preset the maximum value (eg, = 2) that the terminal device can feedback.

[0205] In addition, when the terminal device sets a predetermined value 0 as, the terminal device is set by the base station device when feeding back a value higher than the predetermined value. Set a value of 1 that is different from 〇 to 〇〇 2020/175 149 62 卩(：171? 2020/005483

3 I Feedback can be calculated. Here, 0 set by the base station apparatus indicates a value set in the terminal apparatus by the base station apparatus by higher layer signaling or physical layer signaling. Set by the terminal device

For example, when 0 set by the base station device is 2, the terminal device is larger than a predetermined value, and the terminal device is smaller than 0 1 (for example,

You can calculate the amount. The base station device uses 1 for the terminal device in advance.

Calculate I

You can set the value of 丨.

[0206] In addition, the terminal device uses [¾ = 〇 1

You can set as.

Here, ◯ is a constant and may be predetermined or may be set by the base station device. By setting in this way, the terminal device is large

You can set a small value when you feed back a bird. It should be noted that the above formula is set to be larger than the specified value.

It can be limited to the case of notifying you. That is, when the terminal device feeds back a larger value than the specified value, the above formula is set, and when feeding back a value less than the specified value, the 0 set by the base station device is used.

I can be calculated.

[0207] In addition, when the base station apparatus feeds back a larger than a predetermined value to the terminal apparatus, the number of subbands for which 1\/1 I is calculated is equal to the number of subbands for which ○I is calculated. It can be set to assume only the same value.

[0208] Also, the terminal device has a predetermined number or more.

When assuming a case, it is possible to assume compression regardless of the presence/absence of signaling from the base station device. In this case, the parameter related to 0 compression (for example, the value of IV!) can be shared in advance with the base station device. Further, when assuming a predetermined signal processing, the terminal device can assume 0 compression regardless of the presence or absence of signaling from the base station device. For example, the terminal device may support the base station device for predetermined signal processing (for example, signal demodulation that considers ⊙I∙ arithmetic, signal demodulation that considers pressure sensing and turbo equalization) Notify 〇 2020/175 149 63 卩 (：171? 2020 /005483

In this case, the terminal device can consider O compression in the feedback of 0 3 丨.

[0209] In addition, the terminal device can assume 0 compression in the case of performing predetermined signal processing during 0 3 feedback. For example, the terminal equipment performs 0 compression when assuming spatial multiplexing with other terminal equipment (for example, when feeding back <3 I and IV! I considering inter-user interference), and performs 0 compression. Can be assumed.

[0210] Further, in the base station apparatus and terminal apparatus according to the present embodiment, the terminal apparatus is larger than a predetermined value.

In order to achieve the same amount of feedback information (or equal value or less) as the case of feeding back a smaller amount of feedback than a predetermined amount, the value of IV! It is possible to limit the feedback of 2 1//1 丨.

[021 1] The base station device sets the value of |\/| when the terminal device feeds back a temperature larger than a predetermined value to the terminal device, and! You can set the value of _. At this time, the base station device sets the terminal device! It is preferable that the value of-is set when the terminal device feeds back 8 cc or less that is equal to or less than the predetermined value!-or less.

[0212] Also, the terminal device can be preset with the value of !_ according to the value of IV! from the base station device. At this time, the terminal device is larger than the predetermined value.

When feedback is performed, a value (!-, which is different from !_ corresponding to the value of IV! set by the base station device, can be set as!-. At this time, the value set by the terminal device can be set. It is preferable to set !_ as a value smaller than !_ set by the base station device.

[0213] In the base station device and the terminal device, when IV! which is larger than a predetermined value is set, and when the terminal device is larger than the predetermined value.

In the case of feedback, you can limit the number of candidates considered as the second 1\/1 I. For example, the candidate of the phase coefficient fed back by the terminal device at 1\/1 I 2 1 is determined by the notification from the base station device. Base station equipment

As a candidate for {2, 4 〇 2020/175 149 64 卩 (：171? 2020 /005483

, 8} can be considered. The value, the phase difference between the candidate values between the phase factor to which the terminal Fidoba click (angular difference) is changed, 3 6 0 ^°

The value of can be set to the terminal device, but the base station device can set the value of to be smaller than the predetermined value when setting IV! larger than the predetermined value to the terminal device. Similarly, if the terminal device is set to IV! greater than the given value,

Set the value of 1 to a value smaller than the value set by the base station device.

Can be set as

[0214] The base station device must be at least IV!

You can define a table that shows the I relationships. In other words, the terminal device can obtain the feedback that the terminal device can feed back by referring to the table, by IV! or from the base station device. In addition, the terminal device gives feedback.

It is possible to obtain IV! and which are set when I is calculated. The base station device uses a table showing the relationship with IV!

It can be defined for each I (number of ranks, number of layers). The base station apparatus can define at least 1\/1 and a plurality of tables showing the relationship between ¾ and 丨. In the terminal device, the reference table can be set by the base station device. The terminal equipment uses the signaling of the upper layer notified from the base station equipment and the signaling of the physical layer (○ 〇丨

The table to be referenced can be identified by the trigger) and the scramble port used when demodulating the downlink control signal.

[0215] Further, the terminal device can be notified of information indicating the assumed base from the base station device. In this case, the terminal device can calculate 1 and \^/2 based on the notified base. In particular, when the base station device requests ¢ 3 feedback in consideration of inter-user interference from other terminal devices, the terminal device should provide 0 3 feedback based on the set base. You can Based on whether to consider inter-user interference, the terminal device can select whether to use a preset basis or to set the regulation based on the channel estimation value estimated based on 3. it can. 〇 2020/175 149 65 卩 (：171? 2020 /005483

[0216] Note that when the terminal device performs 0<3> feedback using a preset base during 0 compression, the terminal device may notify the base station device of information indicating the base. Further, the terminal device may notify the base station device of the base using a predetermined signature. The signature specified here is, for example, to describe a predetermined bit string in a predetermined bit field of the control information.

[0217] Note that the base station apparatus can set the terminal apparatus to assume 0 compression only with a predetermined rank number. In this case, the terminal device performs 〇 compression.

In general, when you give feedback, you can add other information to the bit field that indicates [¾]. Here, the different information may be information indicating the regulation assumed by the terminal device. In addition, the terminal device shall notify the base station device that the terminal device expects 0 compression by describing a predetermined bit sequence in the bit field indicating [¾]. Can also

[0218] The base station device

The combination of base vectors to be considered when calculating I can be set in advance. When calculating the first 1\/1 I and the second 1\/1 I, the terminal device searches for a suitable combination as I feedback from the candidate vectors and coefficients, and Feed back its index. Therefore, the more candidate vectors and coefficients, the more feedback can be given.

Although the accuracy of the game is improved, the amount of calculation required for the terminal device becomes enormous. Therefore, the base station apparatus according to the present embodiment is

A vector (first |\/| I), a coefficient (second 1\/1 I), and a combination of bases to be considered when calculating I, or any combination thereof (subset) Can be set in advance. The terminal device can notify the base station device of an index indicating a combination that can most accurately notify the propagation path information between the terminal device and the base station device among the preset combinations. By setting in this way, the terminal device increases the amount of calculation due to the calculation of 0 3 丨. \¥02020/175 149 66 卩(: 17 2020/005483

It is possible to avoid it. When the number of subsets is [<0, by controlling [<○, the amount of information related to feedback can also be controlled.

[0219] The terminal device according to the present embodiment feeds back according to the value <0 set by the base station device.

The value of 丨 can be limited. For example, if the value <0 set by the base station device is greater than the predetermined value, the terminal device

You can give feedback to me. In addition, when the feedback value is larger than a predetermined value, the terminal device can set a value different from <0 notified by the base station device to [<0. That is, the terminal device gives feedback.

Please feed back the number of sub-sets to be considered when the value is larger than the specified value.

It is smaller than the case where the amount of money is less than the specified value.

[0220] Further, the base station apparatus according to the present embodiment is

Feedback is possible for each

Can be set to 0. That is,

Can be defined. The terminal device can perform feedback by referring to <0 notified from the base station device and the corresponding table.

You can recognize a bird. Also, the terminal device gives feedback.

Based on the index, <0 can be obtained from the table.

[0221] Further, in the terminal device according to the present embodiment, a combination of one subset can be set. In other words, the terminal device sets <0 sub-sets set by a combination of a plurality of vectors, and the terminal device selects an appropriate sub-set from the <0 sub-sets. Here, the base station apparatus can notify in advance of the vectors that the terminal apparatus does not have to consider among the plurality of vectors that configure the subset itself. Similarly, the base station apparatus can notify in advance of <0 subsets that the terminal apparatus does not have to consider. The base station device can associate the restrictions of a plurality of vectors forming the subset itself, and the restrictions of the subset itself with the anomaly of the terminal device. That is, the base station device is 〇 2020/175 149 67 卩(：171? 2020/005483

Greater than a given value

When feedback is sent, the terminal device can be notified of the vector that constitutes the subset that the terminal device does not have to consider, or the subset itself.

[0222] When feeding back a value larger than a predetermined value, the terminal device can feed back any one of the subsets for each layer. Also, the terminal device feeds back one sub-set to the base station device instead of selecting a sub-set for each layer, and the base station device applies the sub-set in common to all layers. Precoding can be performed when it is possible. When the terminal device feeds back a value larger than the predetermined value, the terminal device does not have to feed back the index indicating the subset to the layers having the predetermined value or more.

[0223] When the terminal device feeds back a value larger than a predetermined value, the terminal device does not use the index indicating the base vector selected at the time of 0 compression, but the number of base vectors considered. Only can give feedback. In this case, the base station apparatus and the terminal apparatus can predetermine the order of the vector to be considered by the terminal apparatus among the three base vectors. Therefore, the terminal device can correctly demodulate the 0-compressed information by feeding back only the number of considered vectors to the base station device.

[0224] Further, when feeding back a value larger than a predetermined value, the terminal device can feed back information indicating another layer as an index indicating a sub-set for a layer having a predetermined value or more. .. In this case, the base station apparatus can perform precoding for a layer having a predetermined value or more based on the information of the sub-set fed back to the layer indicated by the information indicating another layer.

[0225] In addition, the base station device may send the first 1\/1丨 and the second 1\/1

Among the candidates of I, it is possible to preset the vectors and coefficients that do not need to be considered. The base station device should configure the subset to be set for the terminal device. 〇 2020/175 149 68 卩 (：171? 2020 /005483

If the first 1\/1 I and the second 1\/1 I candidates that the base station device has limited in advance are included in the cutouts and coefficients, the terminal device notifies the terminal device from the base station device. Even in the sub-set, without considering the relevant vector or coefficient,

You can calculate the amount. On the other hand, the terminal device considers the limited vector or coefficient when the preset vector or coefficient is included in the subset notified from the base station device, and

I can be calculated.

[0226] The terminal device does not have to consider one of the first IV! I candidate and the second IV! I candidate.

3 V \ 〇 II 〇门 (1st limit) and b 3 ㊀ 3 ㊀ I 6 〇 I for compression

When the first limit and the second limit are set at the same time, the terminal device can give priority to either one and set one.

[0227] Also, assuming that signals are transmitted from different transmission points to the terminal device, the

丨1: It is not desirable for layers to have the same number, the number of subsets, and their combinations. The fact that the transmission points are different means that the delay profiles of the propagation paths are different. Therefore, 〇 un I 1: The size and the number of subsets and their combinations can be shared between layers.

Reference when calculating I ○ 3 I

At least for the received parameters

This is the case when !_ is guaranteed.

[0228] The base station device is

If there is a possibility to send

The setting information of can include at least one of 0 _U n I size, the number of subsets, and a combination thereof. By controlling in this way, the terminal device refers to 0 3 I when calculating 0 3 I.

It is possible to correctly estimate 0 3 for the channel through which 3 propagates.

[0229] According to the method described above, it is possible to avoid an increase in the amount of feedback information that occurs when the terminal device feeds back a bird larger than a predetermined value. 〇 2020/175 149 69 卩(：171? 2020/005483

It becomes possible to improve the frequency utilization efficiency.

[2. Common to all embodiments]

[0230] A program running on an apparatus according to an aspect of the present invention controls a central processing unit (CPU) or the like to cause a computer to function so as to realize the functions of the embodiments of the present invention. It may be a program. The program or the information handled by the program may be: volatile memory such as R and om cess Memory (RAM) or non-volatile memory such as flash memory, or Hard Disk Drive (H DD), or Stored in other storage systems.

[0231] Note that the program for realizing the functions of the embodiments according to the present invention may be recorded in a computer-readable recording medium. It may be realized by reading the program recorded in this recording medium into the computer system and executing it. The term "computer system" as used herein means a computer system built into the device and includes an operating system and hardware such as peripheral devices. In addition, "a computer-readable recording medium" is a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a medium that holds a program dynamically for a short time, or any other recording medium that can be read by a computer. May be.

[0232] Further, each functional block or various features of the device used in the above-described embodiments may be implemented or executed by an electric circuit, for example, an integrated circuit or a plurality of integrated circuits. Electrical circuits designed to perform the functions described herein include general purpose processors, digital signal processors (DSP), application specific integrated circuits (AS ICs), field programmable gate arrays (F PGAs). ), or other programmable logic device, discrete or transistor logic, discrete hardware components, or combinations thereof. A general-purpose processor may be a microprocessor or a conventional processor, controller, or microprocessor. 〇 2020/175 149 70 卩(：171? 2020/005483

It may be a black controller or a state machine. The electric circuit described above may be composed of a digital circuit or an analog circuit. Further, in the event that an integrated circuit technology that replaces the current integrated circuit appears due to the progress of semiconductor technology, one or more aspects of the present invention can use a new integrated circuit according to the technology.

[0233] Note that the present invention is not limited to the above embodiment. In the embodiment, an example of the device is described, but the present invention is not limited to this, and a stationary or non-movable electronic device installed indoors or outdoors, for example, eight devices, kitchen devices. It can be applied to terminal equipment or communication equipment such as cleaning/laundry equipment, air conditioning equipment, office equipment, vending machines, and other household appliances.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention. Is also included. Further, the present invention can be variously modified within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. Be done. Further, the elements described in each of the above-described embodiments are also included, in which elements having similar effects are replaced with each other.

Industrial availability

[0235] The present invention is suitable for use in a base station device, a terminal device, and a communication method.

Claims

〇 2020/175149 71 卩(:171? 2020/005483 Claims

[Claim 1] A base station device communicating with a terminal device,

At least one

And a receiver for receiving a signal containing at least one 0 3 丨, wherein 〇 3 丨 is at least

The 0 3 丨 further includes information indicating a basis for applying the IV! 丨 to a matrix in which the IV!

The transmission unit arranges the cells in the predetermined dimension. IV! Signals a value indicating the number of I,

Arranged in the predetermined dimension? A base station device that sets, in the terminal device, information in which the number of IV!

[Claim 2] The terminal device is larger than a predetermined value.

The base station apparatus according to claim 1, wherein the base station apparatus signals the information indicating the number of the bases set by the terminal apparatus when notifying the information.

[Claim 3] A terminal device communicating with a base station device,

At least one

And a transmitter for transmitting a signal containing at least one 0 3 I, wherein the 0 3 丨 is at least

The receiving unit arranges in the predetermined dimension. IV! Get a value indicating the number of I,

Arranged in the predetermined dimension? If the value indicating the number of IV! A terminal device that is set to a value.

[Claim 4] A communication method of a base station device communicating with a terminal device, comprising:

At least one

The step of sending 72 卩 (: 171? 2020 /005483

Receiving a signal containing at least one O 3 I, said O 3 I being at least

Including,

The 0 3 丨 further includes information indicating a base applied to the matrix in which the IV! 丨 is arranged in a predetermined dimension,

Further, the step of signing a value indicating the number of the IV! I arranged in the predetermined dimension,

Arranged in the predetermined dimension? IV! The number of bases, the number of bases, and the step of setting information associated with the eight items in the terminal device.