WO2011106996A1

WO2011106996A1 - Method, system and apparatus for transmitting downlink control information(dci) and uplink transmission

Info

Publication number: WO2011106996A1
Application number: PCT/CN2011/000355
Authority: WO
Inventors: 陈文洪; 缪德山; 赵锐; 潘学明
Original assignee: 电信科学技术研究院
Priority date: 2010-03-05
Filing date: 2011-03-04
Publication date: 2011-09-09
Also published as: CN102083223A

Abstract

A method, system and apparatus for transmitting DCI and uplink transmission are used to solve the problem in prior art that network side is hard to schedule the user equipment (UE) to perform uplink transmission caused by the present DCI can not support LET-A system. The method for transmitting DCI in the embodiments of the present invention includes: the network side generates DCI for scheduling uplink transmission; said network side transmits the generated DCI; wherein, said DCI includes the following information: resource indication information, for indicating the resource location of assigned resource; modulation indication information, for indicating the order of modulation coding of transmission block; data indication information, for indicating whether new data will be transmitted by the transmission block; map indication information, for indicating the corresponding relationship between the transmission block and codeword; pre-coding indication information, for indicating the size of rank of uplink transmission and the index of the used pre-coding codeword. Application of the method in the embodiment of the present invention can enhance the efficiency of uplink transmission.

Description

Method, system and device for transmitting DCI and uplink transmission The application claims to be submitted to the Chinese Patent Office on March 05, 2010, the application number is 201010119186.4, and the invention name is

The priority of the Chinese Patent Application, which is incorporated herein by reference.

Technical field

The present invention relates to a wireless communication technology, and in particular, to a method, system, and apparatus for transmitting DCI (downlink control information) and uplink transmission. Background technique

MIMO (Multiple Input Multiple Output) technology uses multiple antennas for transmitting and receiving at both the transmitting end and the receiving end, thereby greatly improving the transmission performance and capacity of the system.

In LTE-A (Long Term Evolution-Advanced) uplink transmission, MIMO transmission can be implemented in at least two transmission modes: uplink single port transmission and uplink spatial multiplexing transmission. The former transmits only a single port of data on multiple antennas by means of antenna virtualization, and is basically consistent with the uplink transmission of LTE (Long Term Evolution) from the base station side; the latter simultaneously transmits precoding through spatial multiplexing. Multiple data streams greatly increase system throughput. At the same time, LTE-A also introduces a non-contiguous resource configuration in the uplink transmission, allowing users to occupy discrete multi-block resources to improve the frequency domain diversity gain.

Whether it is uplink MIMO or non-contiguous resource configuration, the base station needs to notify the UE (User Equipment) of the allocated physical resources and uplink transmission information through DCI, such as HARQ (Hybrid Automatic Repeat Request). Information, precoding information, etc. The DCI is sent to the UE in a specific DCI format through a PDCCH (physical downlink control channel), and the UE obtains corresponding information by blindly detecting the PDCCH. In the existing LTE standard, the base station uses DCI format 0 to schedule uplink transmission. The format only supports single-antenna or single-port transmission under uplink continuous resource configuration, and cannot support non-contiguous resource configuration and spatial multiplexing transmission.

In summary, the current DCI does not support the LTE-A system, which makes it difficult for the network side to schedule user terminals for uplink transmission. Summary of the invention

The embodiments of the present invention provide a method, a system, and a device for transmitting DCI and uplink transmission, which are used to implement uplink transmission by a network side scheduling user terminal in an LTE-A system.

A method for transmitting downlink control information DCI according to an embodiment of the present invention, the method includes: generating, by a network side, a DCI for scheduling uplink transmission;

The network side sends the generated DCI, and is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI.

The DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource, modulation indication information, used to indicate a modulation coding order of the transport block, and data indication information, used to indicate whether the transport block transmits a new one. The mapping indication information is used to indicate a correspondence between the transport block and the codeword. The precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.

A method for uplink transmission provided by an embodiment of the present invention includes:

The user terminal receives downlink control information DCI for scheduling uplink transmission;

The user terminal performs uplink transmission according to the DCI;

A transmission system provided by an embodiment of the present invention includes:

a network side device, configured to generate downlink control information DCI for scheduling uplink transmission, sending a message The DCI is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI, and the user terminal is configured to receive a DCI for scheduling uplink transmission, and perform uplink transmission according to the DCI;

A network side device, where the network side device includes:

a generating module, configured to generate downlink control information DCI for scheduling uplink transmission;

An information sending module, configured to send the generated DCI, to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI;

A user terminal provided by the embodiment of the present invention, where the user terminal includes:

a receiving module, configured to receive downlink control information DCI for scheduling uplink transmission;

a transmission module, configured to perform uplink transmission according to the DCI;

In the embodiment of the present invention, the network side sends a DCI, where the DCI includes: resource indication information, which is used to indicate a resource location of the allocated resource, and modulation indication information, which is used to indicate a modulation coding stage of the transport block. The data indicating information is used to indicate whether the transport block transmits new data. The mapping indication information is used to indicate a correspondence between the transport block and the codeword. The precoding indication information is used to indicate the size of the uplink transmission and the preamble used. The index of the encoded codeword. The DCI in the embodiment of the present invention can support the LTE-A system, so that the network side can schedule the user terminal to perform uplink transmission, thereby improving the efficiency of the uplink transmission. Further, the embodiment of the present invention does not need to change the existing DCI format. The content does not need to limit the uplink and downlink transmission modes, and can support signaling indications of various transmission scenarios of uplink MIMO. DRAWINGS

1 is a schematic structural diagram of a transmission system according to an embodiment of the present invention;

2 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a user terminal according to an embodiment of the present disclosure;

4 is a schematic flowchart of a method for transmitting a DCI according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a method for uplink transmission according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, the DCI supporting the LTE-A system is configured in the LTE-A system, and the network side sends the configured DCI to the user terminal. The DCI includes: The resource indication information is used to indicate a resource location of the allocated resource; the modulation indication information is used to indicate a modulation coding order of the transport block; the data indication information is used to indicate whether the transport block transmits new data; and the mapping indication information is used to indicate Corresponding relationship between the transport block and the codeword; precoding indication information, used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used. The DCI in the embodiment of the present invention can support the LTE-A system, that is, the multi-antenna or multi-port in the specified resource configuration can be supported, so that the network side can schedule the user terminal to perform uplink transmission, thereby improving the efficiency of the uplink transmission.

The embodiments of the present invention can be applied to any duplex system (TDD system or FDD system), such as an LTE-A system, and can also be applied to any system that performs MIMO technology transmission. The embodiments of the present invention can be used for any number of antennas, antenna arrays (such as line arrays, polarization arrays), and arbitrary transmission modes (such as single-port modular transmission in a non-contiguous resource configuration, SU-MIMO (Singer User Multiple Input Multiple Output) Uplink transmission under single-user multiple-input multiple-output), MU-MIMO (Multi-User Multiple Input Multiple Output), and UL CoMP (uplink carrier aggregation).

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the system for transmitting in the embodiment of the present invention includes: a network side device 10 and a user terminal.

20.

The network side device 10 is configured to generate a DCI for scheduling uplink transmission, and send the generated DCI, where the user terminal that receives the DCI performs uplink transmission according to the DCI.

The DCI includes the following information:

The resource indication information is used to indicate the resource location of the allocated resource. For example, when the resource configuration type is 0, all bits are used to indicate resource allocation. When the resource configuration type is 1, "2 (P is specified in the LTE Release 8 standard) Value bits are used to indicate a subset of resource blocks, 1 bit is used to indicate the offset of the resource block range, and other bits are used to indicate a specific resource allocation;

The modulation indication information is used to indicate a modulation coding order of the transport block, for example, there are two transport blocks, a transport block 1 and a transport block 2, and respectively need to indicate the modulation and coding order of the transport block 1 and the transport block 2; Used to indicate whether the transport block transmits new data, such as two transport blocks, transport block 1 and transport block 2. If HARQ bundling is not used, it is necessary to indicate whether new data is transmitted by transport block 1 and transport block 2; HARQ bundling, the transport block 1 and the transport block 2 share the same data indication information, that is, there is no need to separately indicate whether the transport block 1 and the transport block 2 transmit new data, but a common indication;

Mapping indication information, used to indicate a correspondence between a transport block and a codeword;

The precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.

The user terminal 20 is configured to receive, by the network side device, a DCI for scheduling uplink transmission, where According to the DCI, uplink transmission is performed.

The DCI also includes one or more of the following information (including all):

The power control indication information is used to adjust a transmit power of a Physical Uplink Shared Channel (PUSCH);

a cyclic shift indication information, configured to indicate a cyclic shift value of a first DMRS (Demodulation Reference Symbol) port, or a pattern (mode) indicating a cyclic shift value and an orthogonal code used by each DMRS port, Specifically indicating which meaning can be specified in the protocol, the network side device 10 can also notify the user terminal 20;

The subframe indication information is used to indicate an uplink subframe number corresponding to the DCI when the number of uplink subframes is greater than the number of downlink subframes;

The downlink allocation indication information is used to indicate the number of PDSCHs (Physical Downlink Shared Channels) to be fed back and the sum of the number of SPS (Semi-Persistent Scheduling) dry-release signaling, and the user terminal is configured according to The downlink allocation indication information can check whether the packet is lost;

Sending indication information, which is used to indicate whether the user terminal reports one or more of an aperiodic RI ( Rank Indicator, a PMI (Precoding Matrix Indicator), and a CQI (Channel Quality Indicator) The value reported in different transmission modes may be different. For example, the single-port mode only needs to feed back CQI.

The resource configuration type indication information is used to indicate the resource configuration type, that is, 0 or 1. If the uplink bandwidth is not greater than 10 PRBs (physical resource blocks), the bit may not be used, and the resource configuration type 0 is adopted by default;

OCC (Orthogonal Cover Code) format indication information, used to indicate the OCC sequence used;

The SRS (probe reference signal) sends indication information, which is used to indicate whether the user terminal reports an aperiodic SRS;

Sending sounding indication information based on the DMRS, indicating whether to send sounding at the location of the DMRS; The frequency hopping indication information is used to indicate whether a group hopping flag is performed, or whether a sequence hopping flag is performed, where the frequency hopping of the different cell configuration indications is different, for example, the cell configuration allows the group hopping. The frequency is used to indicate the group frequency hopping, and the cell configuration is used to indicate the sequence frequency hopping when the sequence hopping is allowed;

Cross-carrier indication information (CIF (Crossing Indication Field)) is used to indicate scheduling across carriers.

In a specific implementation process, in order to improve the transmission efficiency of the DCI, when the network side device 10 is ambiguous, the bit is padded in the generated DCI, and the DCI after the padding is used as the DCI to be sent;

The format of the generated DCI is different from that of other DCIs; the length of the DCI after the padding is not the length of the blur, and is different from the length of other DCI formats.

The fuzzy length includes: {12, 14, 16, 20, 24, 26, 32, 40, 44, 56}, other DCI formats include but are not limited to: DCI format in LTE system, LTE-A system except the present invention The format of the DCI outside the embodiment.

For example, other DCI formats have lengths of 13 and 23, and the length of the generated DCI is 23 bits. If the length of other DCI formats is the same, padding bits are required. In order to avoid confusion, you can fill 2 bits 0 at the end, and the length of the DCI after padding is 25 bits, that is, it is not the same as other DCI formats, nor is it fuzzy length.

The following is a list of DCIs. It should be noted that the embodiments of the present invention are not limited to the following examples, and other DCIs that meet the above requirements are applicable to the embodiments of the present invention.

The format of the DCI may include the contents of Table 1.

Information field Number of bits Meaning and description

Where N is the number of PRBs included in the upstream bandwidth.

/P (the parenthesis P is the size of the RBG (resource block group), specific resource indication information

The representation is rounded up. The indication method depends on the type of resource allocation.

When the resource allocation type is 0, according to the bit map The method implements an RB indication.

In resource allocation type 1, "log ₂ (/>) 1 bits indicate the subset of resource groups located. 1 bit is used to indicate the resource start position, and the remaining bits are used to indicate the location of resource allocation.

Modulation indication letter of codeword 1 5 MCS (modulation coding mode) level

Interest

New data transmission indication of codeword 1 or codeword 1 and data indication information 1

Codeword 2 combined new data transmission indication Codeword 2 modulation indication letter 5 codeword 2 MCS level

Interest

Power control indication information 2 PUSCH power control command indication

CS indicating the first DMRS port (cyclic shift cyclic indication information 3-bit value) or the cyclic shift value and orthogonal code pattern used by each DMRS port

When the number of uplink subframes is greater than the number of downlink subframes, the subframe indication information 2 (such as the case where the downlink subframe configuration of the TDD system is 0) indicates that the uplink subframe number corresponding to the DCI is used to indicate the PDSCH that needs to be fed back. Number

3 (FDD system) or

The sum of the downlink allocation indication information and the number of SPS release signaling;

5 (TDD system)

Check if the packet is lost at the receiving end;

Defining the correspondence between the transport block and the codeword, mapping indication information 1

as shown in Table 3

For the case of 2 ports, the indicated precoding information is specific to the number of bits and

The information is shown in Table 5.

Precoding indication information Number of ports of the UE antenna

For the 4-port case, the indicated precoding signal is relevant. As shown in Table 4.

The interest rate is shown in Table 6. Sending indication information 1 Is the UE required to report the aperiodic CQI/RI PMI?

Table 1

The format of the DCI may also include one or more of the contents of Table 2. That can also include: Information field Number of bits Meaning and description

Resource configuration type indication 1 Differentiate resource allocation type 0/1

information SRS sends indication information 1 whether the UE is required to perform aperiodic sounding

The OCC format indication information 1/2 indicates the adopted OCC sequence. Based on the DMRS transmission 1 indicates whether the sounding sounding indication information is sent at the location of the DMRS.

The data indication letter 1 of code word 2 is used to indicate whether there is new data transmission.

Interest

The frequency hopping indication information 1 indicates whether to perform group hopping or sequence hopping; the cross carrier indication information 3 is used to indicate scheduling of the cross-carrier;

Table 2

Transport block and codeword

See Table 4 for the number of bits of the precoding indication information.

Table 4

When the UE has two antenna ports, the indication contents of the 3-bit precoding indication information are shown in Table 5.

[1 l] ^r /V2

2 TRI=1 2 Reserved

The precoding vector is

[1 -l] ^r /V2

3 TRI=1 3 Reserved

Pre

4 TRI=1 4 Reserved

The precoding vector is

[i - ] ^r 2

5 reservations 5 reservations

6 reservations 6 reservations

7 reservations 7 reservations

table 5

When the UE has 4 antenna ports, the indication content of the 6-bit precoding indication information is shown in Table 6.

41-63 29 - 63 Reserved

Table 6

TRI is the size of the transmitted RI (rank), and TPMI is the index of the uplink precoding matrix.

Among them, Table 6 can also be modified to the following table:

In a specific implementation, the network side device in the embodiment of the present invention may be a base station (such as a macro base station, an evolved base station, a home base station, etc.), or an RN (relay) device, or other network side devices.

As shown in FIG. 2, the network side device of the embodiment of the present invention includes: a generating module 100 and an information sending module 110.

The generating module 100 is configured to generate a DCI for scheduling uplink transmission.

The information sending module 110 is configured to send the DCI generated by the generating module 100, and is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI. The DCI generated by the generating module 100 is the same as the DCI generated by the network side device 10 in FIG. 1 , and details are not described herein again.

The generating module 100 may further fill a bit in the generated DCI when the length of the generated DCI is the same as the length of the other DCI format or the length of the generated DCI is a fuzzy length, and use the DCI after the padding as the DCI to be sent;

As shown in FIG. 3, the user terminal of the embodiment of the present invention includes: a receiving module 200 and a transmitting module 210. The receiving module 200 is configured to receive a DCI for scheduling uplink transmission.

The transmission module 210 is configured to perform uplink transmission according to the DCI received by the receiving module 200.

The DCI received by the receiving module 200 is the same as the DCI generated by the network side device 10 in FIG. 1, and details are not described herein again.

As shown in FIG. 4, the method for transmitting a DCI in the embodiment of the present invention includes the following steps:

Step 401: The network side generates a DCI for scheduling uplink transmission.

The DCI includes the following information: resource indication information, used to indicate a resource location of the allocated resource; modulation indication information, used to indicate a modulation coding order of the transport block; and data indication information, used to indicate whether the transport block transmits new data; The mapping indication information is used to indicate a correspondence between the transport block and the codeword. The precoding indication information is used to indicate the size of the rank of the uplink transmission and the index of the precoded codeword used.

Step 402: The network side sends the generated DCI, and is used to indicate that the user terminal that receives the DCI performs uplink transmission according to the DCI.

In step 401, the DCI generated by the network side for scheduling the uplink transmission is the same as the DCI generated by the network side device 10 in FIG. 1, and details are not described herein again.

Step 401 and step 402 may further include: when the length is fuzzy, padding the generated DCI, and using the padding DCI as the DCI to be sent; The format of the generated DCI and other DCIs is different; the length of the DCI after padding bits is not the length of the blur, and is different from the length of other DCI formats.

As shown in FIG. 5, the method for uplink transmission in the embodiment of the present invention includes the following steps:

Step 501: The user terminal receives a DCI for scheduling uplink transmission.

Step 502: The user equipment performs uplink transmission according to the received DCI.

In step 501, the DCI received by the user terminal is the same as the DCI generated by the network side device 10 in FIG. 1, and details are not described herein.

In the specific implementation process, step 501 and steps in FIG. 4 may also be included before step 501.

402.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart. The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in a block or blocks of a flow or a flow and/or a block diagram of a flowchart

WL

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and modifications

It can be seen from the foregoing embodiments that: In the embodiment of the present invention, the network side sends a DCI; where the DCI includes: resource indication information, used to indicate a resource location of the allocated resource; and modulation indication information, used to indicate the transport block. Modulation coding order; data indication information, used to indicate whether the transport block transmits new data; mapping indication information, used to indicate a correspondence between the transport block and the codeword; precoding indication information, used to indicate the rank of the uplink transmission And the index of the precoded codeword used.

The DCI in the embodiment of the present invention can support the LTE-A system, so that the network side can schedule the user terminal to perform uplink transmission, thereby improving the efficiency of the uplink transmission.

Further, the embodiment of the present invention does not need to change the content of the existing DCI format, and does not need to limit the uplink and downlink transmission modes, and can support signaling indications of various transmission scenarios of the uplink.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A method for transmitting downlink control information DCI, the method comprising: generating, by a network side, a DCI for scheduling uplink transmission;

Sending, by the network side, the generated DCI, where the user terminal that receives the DCI is in the DCI for uplink transmission;

The DCI includes the following information:

Resource indication information, used to indicate a resource location of the allocated resource;

Modulation indication information, used to indicate a modulation coding order of the transport block;

Data indication information, used to indicate whether the transport block transmits new data;

2. The method of claim 1, wherein the DCI further comprises one or more of the following information:

Power control indication information, used to adjust a transmit power of a physical uplink shared channel PUSCH;

And a cyclic shift indication information, configured to indicate a cyclic shift value of the first demodulation reference symbol DMRS port, or a pattern pattern indicating a cyclic shift value and an orthogonal code used by each DMRS port;

The downlink allocation indication information is used to indicate the number of physical downlink shared channel PDSCHs that need to be fed back and the sum of the number of quasi-persistent scheduling SPS release signalings;

And transmitting, by the user equipment, whether the user terminal reports one or more of the aperiodic rank indication RI, the precoding matrix index PMI, and the channel quality indicator CQI;

Resource configuration type indication information, used to indicate a resource configuration type;

Orthogonal cover code OCC format indication information, used to indicate the used OCC sequence; The sounding reference signal SRS sending indication information is used to indicate whether the user terminal reports an aperiodic SRS;

Sending sounding indication information based on the DMRS, indicating whether to send sounding at the location of the DMRS;

The frequency hopping indication information is used to indicate whether to perform group hopping, or to indicate whether to perform sequence hopping. The cross-carrier indication information is used to indicate scheduling of carriers.

The method according to claim 1 or 2, wherein after the generating the DCI for scheduling the uplink transmission, before transmitting the generated DCI, the method further includes: when the length is fuzzy, filling the generated DCI with a bit, and The DCI after the padding is used as the DCI to be transmitted;

4. A method for uplink transmission, characterized in that the method comprises:

The user terminal performs uplink transmission according to the DCI;

The DCI includes the following information:

5. The method of claim 4, wherein the DCI further comprises one or more of the following information:

Power control indication information, configured to adjust a transmit power of a physical uplink shared channel PUSCH; a cyclic shift indication information, configured to indicate a cyclic shift value of the first demodulation reference symbol DMRS port, or a pattern pattern indicating a cyclic shift value and an orthogonal code used by each DMRS port;

Orthogonal cover code OCC format indication information, used to indicate the OCC sequence used;

The sounding reference signal SRS is sent to indicate whether the user terminal reports an aperiodic SRS.

6. A system for transmission, characterized in that the system comprises:

a network side device, configured to generate downlink control information DCI for scheduling uplink transmission, and send the generated DCI, where the user terminal that receives the DCI performs uplink transmission according to the DCI;

a user terminal, configured to receive a DCI for scheduling uplink transmission, and perform uplink transmission according to the DCI;

The DCI includes the following information:

Precoding indication information, used to indicate the size of the rank of the uplink transmission and the precoding codeword used Index.

7. The system of claim 6, wherein the DCI further comprises one or more of the following information:

The system according to claim 6 or 7, wherein the network side device is further configured to: when the length is fuzzy, fill the generated DCI, and use the DCI after the padding as the DCI to be sent. ;

The format of the generated DCI and other DCIs is different; the length of the DCI after padding bits is not the length of the blur, and is different from the length of other DCI formats.

A network side device, wherein the network side device comprises:

The DCI includes the following information:

The network side device according to claim 9, wherein the DCI further includes one or more of the following information:

The sounding reference signal SRS sending indication information is used to indicate whether the user terminal reports an aperiodic SRS; Sending sounding indication information based on DMRS, indicating whether to send sounding at a position of the DMRS;

The network side device according to claim 9 or 10, wherein the generating module is further configured to: when the length is fuzzy, fill the generated DCI, and use the DCI after the padding as the to-be-sent DCI;

12. A user terminal, the user terminal comprising:

The DCI includes the following information:

The user terminal according to claim 12, wherein the DCI further comprises one or more of the following information:

a cyclic shift indication information, configured to indicate a cyclic shift value of the first demodulation reference symbol DMRS port, or a pattern pattern indicating a cyclic shift value and an orthogonal code used by each DMRS port; The subframe indication information is used to indicate an uplink subframe number corresponding to the DCI when the number of uplink subframes is greater than the number of downlink subframes;

The sounding reference signal is sent by the SRS to indicate whether the user terminal reports the aperiodic

SRS;