WO2019024085A1 - Method, apparatus and system for determining modulation and coding scheme - Google Patents

Abstract

The present invention relates to the field of communications. Disclosed are a method, apparatus and system for determining a modulation and coding scheme. The method comprises: an access network device transmits to a terminal MCS table configuration information corresponding to n configuration objects; the terminal configures MCS tables respectively corresponding to the n configuration objects in at least two types of MCS tables according to the MCS table configuration information, the configuration objects being codewords or transport layers; the access network device transmits to the terminal DCI carrying MCS indices corresponding to the n configuration objects; and the terminal queries, in the MCS table corresponding to the ith configuration object, the ith modulation order and the ith transport block index corresponding to the ith configuration object according to the MCS index corresponding to the ith configuration object, wherein 0<i≤n. The present invention resolves, by transmitting to a terminal instruction for configuring MCS tables and MCS indices according to different codewords and/or different transport layers, the problem of inaccuracy of the modulation and coding scheme by a terminal in a unified manner by using a particular type of MCS table configured by an access network device.

Description

Modulation coding method determining method, device and system Technical field

The present application relates to the field of communications, and in particular, to a method, device, and system for determining a modulation and coding method.

Background technique

In Long-Term Evolution (LTE), an adaptive modulation and coding scheme (MCS) is supported for downlink data. That is, the access network device selects different modulation and coding modes according to different channel qualities to encode and modulate the downlink data of each terminal.

In the related art, the Third Generation Partnership Project (3GPP) provides two MCS tables in a communication protocol: a first MCS table and a second MCS table. The modulation coding mode of 64QAM is supported in the first MCS table, and the modulation coding mode of 256QAM (Quadrature Amplitude Modulation) is supported in the second MCS table. Each MCS table has a correspondence between the MCS index, the modulation order, and the transport block index. In both MCS tables, even the same MCS index, the corresponding modulation order and transport block index may be different. Therefore, the access network device will explicitly indicate to the terminal which MCS table to use, according to the description of the 3GPP communication protocol 36.213:

1. If the access network device configures the high-level parameter altCQI-Table-r12 to the terminal, the terminal according to the MCS index in the second MCS table (Table 7.1.7.1-1A) and Downlink Control Information (DCI), Determining the modulation order and the transport block index;

2. If the access network device does not configure the high-level parameter altCQI-Table-r12 to the terminal, the terminal determines the modulation order and the transport block index according to the first MCS table (Table 7.1.7.1-1) and the MCS index indicated in the DCI. .

However, since LTE can support space division multiplexing technologies, such as Multiple-Input Multiple-Output (MIMO), when there are at least two streams (or layers) between the access network device and the terminal, the terminal uses a certain The modulation coding method uniformly determined by the MCS table is not necessarily accurate, and the channel conditions between different streams are very different, resulting in a large difference in block-error rate (BLER) between different streams.

Summary of the invention

In order to solve the problem that the terminal adopts one type of MCS table configured by the access network device, and the unified determined modulation and coding mode is not necessarily accurate, the present application provides a method, device and system for determining a modulation and coding mode. The technical solution is as follows:

According to a first aspect of the embodiments of the present invention, there is provided an MCS determining method, the method comprising:

The access network device sends the MCS table configuration information corresponding to the n configuration objects to the terminal, where the MCS table configuration information is used to configure the MCS table corresponding to each of the n configuration objects in the at least two MCS tables;

The access network device sends a DCI to the terminal, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is configured to use the MCS index corresponding to the ith configuration object. In the MCS table corresponding to the i configuration object, querying the ith modulation order and the ith transport block index corresponding to the ith configuration object, 0<i ≤ n;

The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value.

By transmitting an instruction to the terminal to configure the MCS table and the MCS index according to different codewords and/or different transport layers, the solution of the MCS table configured by the terminal using the access network device is solved, and the unified modulation and coding mode is not necessarily accurate. The problem is that the corresponding MCS tables are adopted for different codewords and/or different transport layers, and a more reasonable MCS can be selected for modulation and solution according to different codewords and/or channel conditions of different transport layers. To improve the accuracy and reliability of data transmission between access network devices and terminals.

In an optional implementation manner, the access network device sends the MCS table configuration information corresponding to the n configuration objects to the terminal, including:

The access network device sends radio resource control (RRC) signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the access network device sends the MCS table configuration information corresponding to the n configuration objects to the terminal, including:

The access network device sends the DCI to the terminal, where the DCI carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the DCI includes a predetermined domain;

The predetermined domain includes n bits corresponding to the n configuration objects;

When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table.

In an optional implementation manner, the predetermined value is 10, and the second MCS table includes three or four entries with a modulation order of 10.

By configuring a second MCS table for different codewords and/or different transport layers, the second MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data. The problem of using 1024QAM modulation transmission improves the data transmission efficiency.

According to a second aspect of the embodiments of the present invention, there is provided an MCS determining method, the method comprising:

The terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device;

The terminal configures an MCS table corresponding to each of the n configuration objects in at least two types of MCS tables according to the MCS table configuration information;

Receiving, by the terminal, the DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects;

The terminal queries an ith modulation order and an ith transport block index corresponding to the ith configuration object in an MCS table corresponding to the ith configuration object according to an MCS index corresponding to the ith configuration object. 0<i≤n;

The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value.

By receiving the MCS table configuration command and the MCS index information sent by the access network device, configuring the MCS table and the MCS index according to different codewords and/or transport layers, and solving a certain MCS table configured by the terminal using the access network device, The unified determination of the modulation and coding mode is not necessarily accurate, and the corresponding MCS table is adopted for different codewords and/or different transport layers, and channel conditions can be according to different codewords and/or different transport layers. Select a more reasonable MCS for modulation and demodulation, and improve the accuracy and reliability of data transmission between the access network device and the terminal.

In an optional implementation, the terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device, including:

The terminal receives the RRC signaling sent by the access network device, where the RRC signaling carries the MCS table configuration information corresponding to the n configuration objects.

In an optional implementation, the terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device, including:

The terminal receives the DCI sent by the access network device, where the DCI carries the MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the DCI includes a predetermined domain;

The predetermined domain includes n bits corresponding to the n configuration objects;

When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table.

In an optional implementation manner, the predetermined value is 10, and the second MCS table includes three or four entries with a modulation order of 10.

By configuring a second MCS table for different codewords and/or different transport layers, the second MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data. The problem of using 1024QAM modulation transmission improves the data transmission efficiency.

In an optional implementation manner, the DCI further includes a number of PRBs corresponding to the n configuration objects;

After receiving the DCI sent by the access network device, the terminal further includes:

Determining, by the ith transmission block index and the number of PRBs, the ith transmission block of the ith configuration object, and receiving the ith transmission block according to a modulation mode corresponding to the ith modulation order .

According to a third aspect of the embodiments of the present invention, there is provided an MCS determining apparatus, the apparatus comprising:

a first sending module, configured to send, to the terminal, MCS table configuration information corresponding to the n configuration objects, where the MCS table configuration information is used to configure an MCS table corresponding to each of the n configuration objects in the at least two MCS tables;

a second sending module, configured to send a DCI to the terminal, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is configured to use the MCS index corresponding to the ith configuration object In the MCS table corresponding to the i-th configuration object, querying the ith modulation order and the ith transport block index corresponding to the ith configuration object, 0<i ≤ n;

The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value.

The MCS determining apparatus solves the configuration of the MCS table and the MCS index according to different codewords and/or different transport layers, and solves a certain MCS table configured by the terminal using the access network device, and uniformly determines the modulation and coding mode. It is not necessarily accurate that the corresponding MCS tables are used for different codewords and/or different transport layers, and a more reasonable MCS can be selected according to different codewords and/or channel conditions of different transport layers. Modulation and demodulation to improve the accuracy and reliability of data transmission between access network devices and terminals.

In an optional implementation, the first sending module is configured to send RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the first sending module is configured to send the DCI to the terminal, where the DCI carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the DCI includes a predetermined domain;

The predetermined domain includes n bits corresponding to the n configuration objects;

When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table.

In an optional implementation manner, the predetermined value is 10, and the second MCS table includes three or four entries with a modulation order of 10.

By configuring a second MCS table for different codewords and/or different transport layers, the second MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data. The problem of using 1024QAM modulation transmission improves the data transmission efficiency.

According to a fourth aspect of the embodiments of the present invention, there is provided an MCS determining apparatus, the apparatus comprising:

a first receiving module, configured to receive MCS table configuration information corresponding to n configuration objects sent by the access network device;

a configuration module, configured to configure, in the at least two MCS tables, an MCS table corresponding to each of the n configuration objects according to the MCS table configuration information;

a second receiving module, configured to receive a DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects;

a querying module, configured to query an ith modulation order and an ith transport block corresponding to the ith configuration object in an MCS table corresponding to the ith configuration object according to an MCS index corresponding to the ith configuration object Index, 0 < i ≤ n;

The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value.

The MCS determining apparatus, by receiving the MCS table configuration command and the MCS index information sent by the access network device, configures the MCS table and the MCS index according to different codewords and/or transport layers, and solves one type of MCS configured by the terminal using the access network device. The table, the unified determination of the modulation and coding method is not necessarily accurate, and the corresponding MCS tables are adopted for different codewords and/or different transport layers, which can be based on different codewords and/or different transport layers. Channel conditions, select a more reasonable MCS for modulation and demodulation, and improve the accuracy and reliability of data transmission between the access network device and the terminal.

In an optional implementation, the first receiving module is configured to receive RRC signaling sent by the access network device, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the first receiving module is configured to receive the DCI sent by the access network device, where the DCI carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the DCI includes a predetermined domain;

The predetermined domain includes n bits corresponding to the n configuration objects;

When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is The second value is used to configure the ith configuration pair. The image corresponds to the second MCS table.

In an optional implementation manner, the predetermined value is 10, and the second MCS table includes three or four entries with a modulation order of 10.

By configuring a second MCS table for different codewords and/or different transport layers, the second MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data. The problem of using 1024QAM modulation transmission improves the data transmission efficiency.

In an optional implementation manner, the DCI further includes a number of PRBs corresponding to the n configuration objects;

The second receiving module is further configured to determine, according to the ith transport block index and the number of PRBs, an ith transport block of the ith configuration object, according to a modulation manner corresponding to the ith modulation order. The i-th transport block is received.

According to a fifth aspect of the embodiments of the present invention, an access network device includes a processor and a transmitter;

The processor is configured to send MCS table configuration information corresponding to n configuration objects to the terminal by using the transmitter, where the MCS table configuration information is used to configure each of the n configuration objects in at least two MCS tables. Corresponding MCS form;

The processor is further configured to send the DCI to the terminal by using the transmitter, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is configured to use the ith configuration object according to the ith configuration object. Corresponding MCS index, in the MCS table corresponding to the ith configuration object, querying the ith modulation order and the ith transport block index corresponding to the ith configuration object, 0<i ≤ n;

The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value.

The access network device solves the problem that the terminal configures the MCS table and the MCS index according to different codewords and/or different transport layers, and solves a certain MCS table configured by the terminal using the access network device, and uniformly determines the modulation and coding manner. It is not necessarily accurate that the corresponding MCS tables are used for different codewords and/or different transport layers, and a more reasonable MCS can be selected according to channel conditions of different codewords and/or different transport layers. Modulation and demodulation are performed to improve the accuracy and reliability of data transmission between the access network device and the terminal.

In an optional implementation, the transmitter is configured to send RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the transmitter is configured to send a DCI to the terminal, where the DCI carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the DCI includes a predetermined domain;

The predetermined domain includes n bits corresponding to the n configuration objects;

When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table.

In an optional implementation manner, the predetermined value is 10, and the second MCS table includes three or four entries with a modulation order of 10.

By configuring a second MCS table for different codewords and/or different transport layers, the second MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data. The problem of using 1024QAM modulation transmission improves the data transmission efficiency.

According to a sixth aspect of the embodiments of the present invention, a terminal is provided, including a receiver and a processor;

The receiver is configured to receive MCS table configuration information corresponding to n configuration objects sent by the access network device;

The processor is configured to configure, in the at least two MCS tables, an MCS table corresponding to each of the n configuration objects according to the MCS table configuration information;

The receiver is further configured to receive a DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects;

The processor is further configured to query, according to the MCS index corresponding to the ith configuration object, an ith modulation order corresponding to the ith configuration object and an MCS table corresponding to the ith configuration object. i transport block index, 0 < i ≤ n;

The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value.

The terminal, by receiving the MCS table configuration command and the MCS index information sent by the access network device, configures the MCS table and the MCS index according to different codewords and/or transport layers, and solves a certain MCS table configured by the terminal by using the access network device. The unified determination of the modulation and coding mode is not necessarily accurate, and the corresponding MCS table is adopted for different codewords and/or different transport layers, and channel conditions can be according to different codewords and/or different transport layers. Select a more reasonable MCS for modulation and demodulation, and improve the accuracy and reliability of data transmission between the access network device and the terminal.

In an optional implementation manner, the receiver is configured to receive RRC signaling sent by the access network device, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the receiver is configured to receive the DCI sent by the access network device, where the DCI carries MCS table configuration information corresponding to the n configuration objects.

In an optional implementation manner, the DCI includes a predetermined domain;

The predetermined domain includes n bits corresponding to the n configuration objects;

When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table.

In an optional implementation manner, the predetermined value is 10, and the second MCS table includes three or four entries with a modulation order of 10.

By configuring a second MCS table for different codewords and/or different transport layers, the second MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data. The problem of using 1024QAM modulation transmission improves the data transmission efficiency.

In an optional implementation manner, the DCI further includes a number of PRBs corresponding to the n configuration objects;

The processor is further configured to determine, according to the ith transmission block index and the number of PRBs, an ith transmission block of the ith configuration object, and the ith transmission according to a modulation mode corresponding to the ith modulation order The block is received.

According to a seventh aspect of the embodiments of the present invention, a modulation and coding mode determining system is provided, where the system includes an access network device and a terminal;

The access network device includes the apparatus provided by the third aspect or any one of the optional implementations of the third aspect;

The terminal comprises the apparatus provided by the fourth aspect or any one of the alternative implementations of the fourth aspect.

According to an eighth aspect of the embodiments of the present invention, there is provided a modulation and coding mode determining system, the system comprising Network access equipment and terminals;

The access network device includes the access network device provided by the optional implementation of any one of the fifth aspect or the fifth aspect;

The terminal includes the terminal provided by the optional implementation of any of the sixth aspect or the sixth aspect.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

The access network device solves the problem that the terminal configures the MCS table and the MCS index according to different codewords and/or different transport layers, and solves a certain MCS table configured by the terminal using the access network device, and uniformly determines the modulation and coding manner. It is not necessarily accurate that the corresponding MCS tables are used for different codewords and/or different transport layers, and a more reasonable MCS can be selected according to channel conditions of different codewords and/or different transport layers. Modulation and demodulation are performed to improve the accuracy and reliability of data transmission between the access network device and the terminal.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

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

2 is a flowchart of an MCS determining method provided by an exemplary embodiment of the present invention;

FIG. 3 is a flowchart of a method for determining an MCS according to another exemplary embodiment of the present invention; FIG.

FIG. 4 is a flowchart of a method for determining an MCS according to another exemplary embodiment of the present invention; FIG.

FIG. 5 is a flowchart of a method for determining an MCS according to another exemplary embodiment of the present invention; FIG.

FIG. 6 is a flowchart of a method for determining an MCS according to another exemplary embodiment of the present invention; FIG.

FIG. 7 is a schematic structural diagram of an MCS determining apparatus according to an exemplary embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of an MCS determining apparatus according to another exemplary embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of an access network device according to an exemplary embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a terminal according to an exemplary embodiment of the present invention.

Detailed ways

In order to make the objects, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

In the related art, since the access network device configures one of the MCS tables from the plurality of MCS tables at the granularity of the terminal, when there are at least two flows (or layers) between the access network device and the terminal, the terminal uses a certain one. The modulation coding method uniformly determined by the MCS table is not necessarily accurate, and the channel conditions between different streams are very different, resulting in a large difference in the error block rate between different streams. Based on the problem, the MCS determining method provided by the embodiment of the present invention provides the following technical solution: the access network device sends MCS table configuration information corresponding to n configuration objects to the terminal, and the configuration object is different codewords and/or different transport layers. The terminal receives the MCS table configuration information sent by the access network device, and configures an MCS table corresponding to each of the n configuration objects in the at least two MCS tables according to the MCS table configuration information; the access network device sends the DCI to the terminal, where The DCI carries the MCS index corresponding to the n configuration objects; the terminal configures the object according to the ith. The corresponding MCS index queries the ith modulation order and the ith transport block index corresponding to the ith configuration object in the MCS table corresponding to the ith configuration object, where 0<i ≤ n. In the embodiment of the present invention, the access network device solves the problem that the terminal configures the MCS table and the MCS index according to different codewords and/or different transport layers, and solves the problem that the terminal uses the MCS table configured by the access network device to unify. The determined modulation coding method is not necessarily accurate, and the corresponding MCS table is adopted for different codewords and/or different transport layers, and can be based on channel conditions of different codewords and/or different transport layers. Select a more reasonable MCS for modulation and demodulation, and improve the accuracy and reliability of data transmission between the access network device and the terminal.

First, several terms related to the embodiments of the present invention are introduced:

1. Access network equipment: The access network equipment may be a base station, the base station may be an evolved base station (evolutional Node B, eNB or e-NodeB) in LTE, or a base station employing a centralized distributed architecture in a 5G system, It is mainly used for radio resource management functions, implements radio bearer control, radio admission control, and connection mobility control, and completes dynamic resource allocation and scheduling on the uplink and downlink.

2, Modulation and Coding Scheme table (MSC table): MCS table contains three columns of information, MCS index (Modulation and Coding Scheme index, I _MCS ), modulation order (Modulation Order, Qm) and transport block index ( The transport block size index, I _TBS ), the terminal configures its own corresponding MCS table according to the instruction of the access network device, and queries the modulation order and the transport block index in the corresponding MCS table according to the MCS index sent by the access network device. In an illustrative example, the MCS index ranges from 0 to 31, the modulation order ranges from 2 to 10, each modulation order corresponds to a different modulation scheme, and the transport block size index ranges from 0 to 34.

3. Downlink Control Information (DCI): The DCI information is the control signaling of the physical layer. The access network device may send the DCI indication MCS table configuration information and/or the MCS index to the terminal.

4. Radio Resource Control (RRC): The RRC signaling is the control signaling of the RRC layer, and the access network device may indicate the MCS table configuration information by sending RRC signaling to the terminal.

5. Codeword (CW): A codeword is sent over a Transmission Time Interval (TTI) and contains a Cyclic Redundancy Check (CRC) and is encoded (Encoding). Independent transport block after Rate Matching.

6. Transport Layer: A transport layer of a codeword corresponds to a wireless transmission mode, and the number of layers used is called Rank.

7. Transport Block Size (TBS): The terminal obtains the transport block size by using the MCS index and the Resource Block (RB) query table sent by the access network device.

8. Physical Downlink Shared Channel (PDSCH): One of the LTE physical downlink channels, which is a downlink channel in which LTE carries primary user data, and is used to carry data from the downlink shared channel DSCH.

9. Physical Resource Block (PRB): The physical resource block corresponds to 12 consecutive carriers in the frequency domain (180K in the case of 15K carrier spacing), and one time slot in the time domain (half subframe) , 0.5ms) of resources, the terminal carries the transport block through the physical resource block.

Please refer to FIG. 1, which is a schematic structural diagram of a mobile communication system according to an exemplary embodiment of the present invention. The mobile communication system can be an LTE system or a 5G system, and the 5G system is also called New Radio (NR). The system is not limited in this embodiment. The mobile communication system includes an access network device 110 and a terminal 120.

The access network device 110 can be a base station, and the base station can be used to convert the received radio frame and the IP packet message into each other, and can also coordinate the attribute management of the air interface. When the access network device 110 adopts a centralized distributed architecture, it generally includes a central unit (CU) and at least two distributed units (DUs). a centralized data unit is provided with a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Media Access Control (MAC) layer protocol stack; The physical layer (Physical, PHY) protocol stack is provided in the unit. The specific implementation manner of the access network device 110 is not limited in the embodiment of the present invention. Optionally, the access network device may further include a home base station (Home eNB, HeNB), a relay, a pico base station Pico, and the like.

The access network device 110 and the terminal 120 establish a wireless connection through the wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is a New Radio (NR); or the wireless air interface may also be a wireless technology based on a 5G-based next-generation mobile communication network technology standard. The air interface; or the wireless air interface may also be a wireless air interface based on the 4G standard (LTE system). The downlink control information that the access network device 110 can send to the terminal 120 over the wireless connection.

Terminal 120 may refer to a device that is in data communication with access network device 110. The terminal 120 can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For example, Subscriber Unit, Subscriber Station, Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal , Access Terminal, User Terminal, User Agent, User Device, or User Equipment (UE). Optionally, the terminal 120 may also be a relay device, which is not limited in this embodiment. The terminal 120 can receive downlink control information sent by the access network device 110 by using a wireless connection with the access network device 110.

It should be noted that, in the mobile communication system shown in FIG. 1, multiple access network devices 110 and/or multiple terminals 120 may be included, and one access network device 110 and one terminal 120 are shown in FIG. For example, this embodiment does not limit this.

Please refer to FIG. 2, which shows a method flowchart of an MCS determining method provided by an exemplary embodiment of the present invention, which is used in the mobile communication system shown in FIG. 1. The method includes:

In step 201, the access network device sends MCS table configuration information corresponding to n configuration objects to the terminal.

In the embodiment of the present invention, the configuration object that the access network device sends the MCS table configuration information to the terminal is a codeword or a transport layer.

In an optional embodiment, the access network device may send the MCS table configuration information to the terminal in any of the following two ways:

(1) The access network device sends the DCI to the terminal, where the DCI carries the MCS table configuration information corresponding to the n configuration objects. Optionally, the DCI includes a predetermined domain, where the predetermined domain includes the n configuration objects. n bits, wherein the ith bit information is used to configure an MCS table corresponding to the ith configuration object in at least two MCS tables, where 0 < i ≤ n.

(2) The access network device sends the RRC signaling to the terminal, where the RRC signaling carries the MCS table configuration information corresponding to the n configuration objects. Optionally, the MCS table configuration information includes one or more cells (Information Element, IE), the plurality of cells may be n. When the MCS configuration information includes a cell, when the cell takes a different value, the value is used to indicate that the n configuration objects configure the corresponding MCS table in the at least two MCS tables; when the MCS configuration information includes n In the case of a cell, each cell has a first value or a second value. When the i-th cell is the first value, the i-th configuration object is configured to correspond to the first MCS table; when the i-th cell is The second value is used to configure the ith configuration object to correspond to the second MCS table.

In an optional embodiment, according to the current LTE protocol, the downlink supports up to two codewords. Therefore, when the configuration object is a codeword, n=2, n configuration objects are the first codeword and the second code. And the access network device sends, to the terminal, the MCS table configuration information corresponding to the first codeword and the second codeword, where the MCS table configuration information is used to configure the MCS table corresponding to the first codeword in the at least two MCS tables. And configuring an MCS table corresponding to the second codeword in at least two MCS tables.

In an optional embodiment, when the configuration object is a transport layer, n≥2, n configuration objects are n transport layers, and the access network device sends MCS table configuration information to the terminal, where the MCS table configuration information is used. An MCS table corresponding to each of the n transport layers is configured in at least two MCS tables.

In the foregoing embodiment, the two MCS tables are a first MCS table and a second MCS table, where the first MCS table does not include an entry whose modulation order is a predetermined value, and the second MCS table includes a modulation order as the predetermined The entry for the value.

In an optional embodiment, the first MCS table is Table 7.1.7.1-1 (Table 1) described in 3GPP protocol 36.213, and the second MCS table is Table 7.1.7.1-1A described in 3GPP protocol 36.213. (Table 2), the predetermined value of the modulation order is 8. It is not difficult to see that Table 7.1.7.1-1 does not contain an MCS index with a modulation order of 8, that is, Table 1 does not support downlink data transmission using 256QAM modulation.

Table 1 (Table 7.1.7.1-1)

Table 2 (Table 7.1.7.1-1A)

In an optional embodiment, in order for LTE to support downlink data to adopt 1024QAM modulation transmission, the MCS table needs to include an entry with a modulation order of 10. In this embodiment, the second MCS table is not Table 2, but an enhanced MCS table with an entry having a modulation order of 10.

The enhanced MCS table can be obtained by replacing the entries of Tables 1 and 2 with entries containing a modulation order of 10. As shown in the following table, Table 3, Table 4, Table 5, and Table 6 contain entries with a modulation order of 10. Table 3, Table 4, Table 5 or Table 6 can be added to Table 1 or Table 2 to obtain an enhanced MCS form.

Add Table 3, Table 4, Table 5 or Table 6 to Table 1, and make certain deletions and modifications to the original Table 1 to obtain the enhanced Table 1; Table 3, Table 4, Table 5 or Table 6 Add to Table 2, and delete and modify the original Table 2 to obtain the enhanced Table 2. It should be noted that the entries added to the original Table 1 or Table 2 include 3 or 4 modulation orders. For a table with a number of 10, some of the entries deleted in the original table or table 2 are not limited.

Therefore, in this embodiment, the first MCS table is Table 1 or Table 2, and the second MCS table is an enhanced MCS table, and the enhanced MCS table is an enhanced Table 1 or an enhanced Table 2. Wherein, the predetermined value of the modulation order is 10, and the second MCS table includes 3 or 4 entries with a modulation order of 10.

Table 3

Table 4

Table 5

Table 6

In step 202, the terminal receives MCS table configuration information sent by the access network device.

The terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device.

In step 203, the terminal configures an MCS table corresponding to each of the n configuration objects in at least two types of MCS tables according to the MCS table configuration information.

In an optional embodiment, when the configuration object is a codeword, n=2, the n configuration objects are the first codeword and the second codeword, and the terminal receives the MCS table configuration information sent by the access network device, if The MCS configuration information indicates that the first codeword corresponds to the first MCS table, and the first MCS table is configured according to the indication; if the MCS configuration information indicates that the first codeword corresponds to the second MCS table, according to the indication A second MCS table is configured for the first codeword.

Similarly, the terminal receives the MCS table configuration information of the access network device, and if the MCS configuration information indicates that the second codeword corresponds to the first MCS table, the first MCS table is configured according to the indication; if the MCS configuration The information indicates that the second codeword corresponds to the second MCS table, and the second MCS table is configured for the second codeword according to the indication.

In an optional embodiment, when the configuration object is a transport layer, n≥2, n configuration objects are n transport layers, The terminal receives the MCS table configuration information sent by the access network device, and configures an MCS table corresponding to each of the n transport layers in the first MCS table or the second MCS table according to the MCS table configuration information.

In step 204, the access network device sends a DCI to the terminal, where the DCI carries an MCS index corresponding to n configuration objects.

When the configuration object is a codeword, n=2, the n configuration objects are the first codeword and the second codeword, and the access network device sends the DCI to the terminal, where the DCI carries the first MCS index corresponding to the first codeword. A second MCS index corresponding to the second codeword.

When the configuration object is a transport layer, n≥2, n configuration objects are n transport layers, and n transport layers are divided into two parts, the first part of the transport layer corresponds to the first MCS index, and the second part of the transport layer corresponds to the second part. MCS index. The access network device sends a DCI to the terminal, where the DCI carries an MCS index corresponding to the n transport layers, where the MCS index is the first MCS index and the second MCS index.

In an alternative embodiment, the first partial transmission layer or the second partial transmission layer may be one layer, two layers or four layers.

When the first partial transmission layer and the second partial transmission layer are both one layer, n=2. The first transport layer belonging to the first part corresponds to the first MCS index, and the second transport layer belonging to the second part corresponds to the second MCS index. The correspondence between the one transport layer corresponding to one MCS index is a one-to-one correspondence.

When the first partial transmission layer and the second partial transmission layer are both layers, n=4. The first transport layer and the second transport layer belonging to the first part correspond to the first MCS index; the third transport layer and the fourth transport layer belonging to the second part correspond to the second MCS index. The correspondence between the two transport layers corresponding to one MCS index is a many-to-one correspondence.

When the first partial transmission layer and the second partial transmission layer are both four layers, n=8. The first to fourth transport layers belonging to the first part correspond to the first MCS index, and the fifth to eighth transport layers belonging to the second part correspond to the second MCS index. The correspondence between the above four transport layers corresponding to one MCS index is a many-to-one correspondence.

In an optional embodiment, the format of the DCI is DCI format 2, where the DCI carries two bits, each bit contains 5 bits of information, and each bit includes an ith configuration object corresponding to the ith configuration object. The MCS index is the first MCS index or the second MCS index. The terminal may acquire information such as an ith modulation order and an ith transport block size index of the ith configuration object according to the MCS index corresponding to the ith configuration object. The MCS index ranges from 0 to 31.

In step 205, the terminal receives the MCS index sent by the access network device.

The terminal receives the MCS index corresponding to the n configuration objects sent by the access network device by using the downlink control channel.

In step 206, the terminal queries the ith modulation order and the ith transport block index corresponding to the i-th configuration object in the MCS table corresponding to the i-th configuration object according to the MCS index corresponding to the i-th configuration object.

According to the above table 1 or the above table 2, the MCS table includes the MCS index, the modulation order, and the transport block index three columns of information, and the terminal receives the MCS table configuration information sent by the access network device, and can determine the MCS table corresponding to the i-th configuration object. Receiving the MCS index sent by the access network device, and determining the MCS index corresponding to the i-th configuration object, and the MCS table corresponding to the i-th configuration object according to the MCS index corresponding to the i-th configuration object (the first MCS table or the second MCS table) In the query, the ith modulation order and the ith transport block index corresponding to the ith configuration object are obtained.

In an optional embodiment, when the configuration object is a codeword, n=2, the n configuration objects are the first codeword and the second codeword, and the terminal receives the first codeword corresponding to the access network device. An MCS index corresponding to the first MCS index and the second codeword; querying, in the MCS table corresponding to the first codeword, the first modulation order and the first transport block index corresponding to the first codeword according to the first MCS index, And searching, in the MCS table corresponding to the second codeword, the second modulation order and the second transport block index corresponding to the second codeword according to the second MCS index.

In an optional embodiment, when the configuration object is a transport layer, n≥2, n configuration objects are n transport layers, and the terminal receives the DCI sent by the access network device, according to the n configurations configured in the DCI. The MCS index corresponding to the object queries the ith modulation order and the ith transport block index corresponding to the ith transport layer in the MCS table corresponding to the ith transport layer according to the MCS index corresponding to the ith transport layer.

In the above embodiment, the downlink channel is a physical downlink control channel (PDCCH); or an enhanced physical downlink control channel (EPDCCH); or a physical downlink shared channel (Physical Downlink Shared Channel) Channel, PDSCH); or, is the downlink channel in the 5G system. In the following, only the following downlink channel is a PDSCH as an example.

In summary, in the embodiment of the present invention, the access network device solves the problem that the terminal uses the configuration of the access network device by sending an instruction to configure the MCS table and the MCS index according to different codewords and/or different transport layers. An MCS table, which uniformly determines the modulation coding method is not necessarily accurate, achieves corresponding MCS tables for different codewords and/or different transport layers, and can be different according to different codewords and/or different The channel conditions of the transport layer select a more reasonable MCS for modulation and demodulation, and improve the accuracy and reliability of data transmission between the access network device and the terminal.

Further, by configuring an enhanced MCS table for different codewords and/or different transport layers, the enhanced MCS table includes 3 or 4 entries with a modulation order of 10, which solves the problem that the existing LTE does not support. The downlink data adopts the problem of 1024QAM modulation transmission, which improves the data transmission efficiency.

Please refer to FIG. 3, which illustrates a method flowchart of an MCS determining method provided by another exemplary embodiment of the present invention, which is used in the mobile communication system shown in FIG. 1. The method includes:

In step 301, the access network device sends RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the first codeword and the second codeword.

The RRC layer is located at the lowest layer of the third layer of the wireless communication network layer and is used for functions such as radio resources and control and management.

The access network device sends the RRC connectionReconfiguration signaling to the terminal, where the RRC connectionReconfiguration signaling is the RRC signaling sent by the access network device to the designated terminal, where the RRC connectionReconfiguration signaling carries the MCS table configuration information corresponding to the first codeword and the second codeword. Optionally, the MCS table configuration information includes one or two cells.

In an optional embodiment, the MCS table configuration information includes a cell, and when the cell takes different values, the value is used to indicate that the first codeword and the second codeword are configured in at least two MCS tables. Corresponding MCS tables. For example, when the value is 0, the first codeword corresponds to the first MCS table, and the second codeword corresponds to the second MCS table. When the value is 1, the first codeword is indicated to correspond to the first MCS table. The second codeword corresponds to the first MCS table; when the value is 2, the first codeword corresponds to the second MCS table, and the second codeword corresponds to the second MCS table; when the value is 3, the first The codeword corresponds to the second MCS table, and the second codeword corresponds to the first MCS table.

In an optional embodiment, the MCS table configuration information includes two cells, each of the cells having a first value or a second value, and configured to be used when the first cell is the first value. a codeword corresponding to the first MCS table, configured to configure the first codeword corresponding to the second MCS table when the first cell is the second value, and configured to be configured when the second cell is the first value The two codewords correspond to the first MCS table, and when the second cell is the second value, the second codeword is configured to correspond to the second MCS table.

In the above embodiment, the first MCS table does not include an entry whose modulation order is a predetermined value, and the packet in the second MCS table An entry whose modulation order is the predetermined value.

In an optional embodiment, the first MCS table is Table 7.1.7.1-1 (Table 1) described in 3GPP protocol 36.213, and the second MCS table is Table 7.1.7.1-1A described in 3GPP protocol 36.213. (Table 2), the predetermined value of the modulation order is 8. It is not difficult to see that Table 7.1.7.1-1 does not contain an MCS index with a modulation order of 8, that is, the following Table 1 does not support downlink data transmission using 256QAM modulation.

In an optional embodiment, in order for LTE to support downlink data to adopt 1024QAM modulation transmission, the MCS table needs to include an entry with a modulation order of 10. In this embodiment, the first MCS table is Table 1 or Table 2, and the second MCS table is an enhanced MCS table, and the enhanced MCS table is an enhanced Table 1 or an enhanced Table 2. Wherein, the predetermined value of the modulation order is 10, and the second MCS table includes 3 or 4 entries with a modulation order of 10.

In step 302, the terminal receives the RRC signaling sent by the access network device.

The terminal receives the RRC signaling of the access network device, where the signaling carries the MCS table configuration information corresponding to the first codeword and the second codeword.

In step 303, the terminal configures an MCS table corresponding to the first codeword in at least two MCS tables according to the RRC signaling sent by the access network device, and configures the MCS corresponding to the second codeword in the at least two MCS tables. form.

The terminal receives the MCS table configuration information sent by the access network device, and if the MCS configuration information indicates that the first codeword corresponds to the first MCS table, the first MCS table is configured according to the indication; if the MCS configuration information indicates The first codeword corresponds to the second MCS table, and the second MCS table is configured for the first codeword according to the indication.

Similarly, the terminal receives the MCS table configuration information of the access network device, and if the MCS configuration information indicates that the second codeword corresponds to the first MCS table, the first MCS table is configured according to the indication; if the MCS configuration The information indicates that the second codeword corresponds to the second MCS table, and the second MCS table is configured for the second codeword according to the indication.

In step 304, the access network device sends a DCI to the terminal, where the DCI carries a first MCS index corresponding to the first codeword, a second MCS index corresponding to the second codeword, and corresponding to the first codeword and the second codeword. The number of PRBs.

The access network device sends the DCI to the terminal. In an optional embodiment, the format of the DCI is DCI format 2, and the first 5 bits carried by the first network bit include the first MCS index and the number of PRBs corresponding to the first codeword. The second 5 bits carried by the second 5 bits contain the second MCS index and the number of PRBs corresponding to the second codeword. The first MCS index and the second MCS index are in the range of 0 to 31, and the number of PRBs corresponding to the first codeword and the second codeword is the same, and the number of the PRBs ranges from 1 to 110.

In step 305, the terminal receives the DCI sent by the access network device.

The terminal receives, by using the downlink control channel, the first MCS index and the number of PRBs corresponding to the first codeword sent by the access network device by using the DCI, and the second MCS index and the number of PRBs corresponding to the second codeword.

In step 306, the terminal queries the first modulation order corresponding to the first codeword and the first transport block index in the MCS table corresponding to the first codeword according to the first MCS index, according to the second MCS index. The second modulation order corresponding to the second codeword and the second transport block index are queried in the MCS table corresponding to the second codeword.

The MCS table includes three columns of MCS index, modulation order and transport block index, and the terminal receives the first MCS index and the number of PRBs corresponding to the first codeword sent by the access network device through the DCI, and the second corresponding to the second codeword. Querying, by the MCS index and the number of PRBs, the first modulation order corresponding to the first codeword and the first transport block index in the MCS table corresponding to the first codeword according to the first MCS index, according to the second MCS index in the second The second modulation order corresponding to the second codeword and the second transport block index are queried in the MCS table corresponding to the codeword.

In step 307, the terminal determines, according to the first transport block index and the number of PRBs, the transport block of the first codeword, according to the a modulation mode corresponding to the modulation order receives the transport block of the first codeword; determining a transport block of the second codeword according to the second transport block index and the number of PRBs, and the second modulation mode corresponding to the second modulation order The transport block of the codeword is received.

The terminal obtains the first modulation order, the first transport block index, and the number of PRBs corresponding to the first codeword, and the second modulation order, the second transport block index, and the number of PRBs corresponding to the second codeword.

For the first codeword, the terminal obtains the first transport block size by using a query table according to its corresponding first transport block index and PRB number. For example, Table 7.1.7.2.1-1 (Table 7) described in the 3GPP protocol 36.213 can be queried to obtain the first transport block size, and the first transport block is received according to the modulation scheme corresponding to the first modulation order. After determining the first transport block size corresponding to the first codeword and the corresponding layer, the first transport block can be received.

Similarly, for the second codeword, the terminal obtains the second transport block size by using the query table according to its corresponding second transport block index and the number of PRBs. For example, Table 7.1.7.2.1-1 (Table 7) described in 3GPP protocol 36.213 can be queried to obtain a second transport block size, and the second transport block is received according to a modulation scheme corresponding to the second modulation order. After determining the second transport block size corresponding to the second codeword and the corresponding layer, the second transport block can be received.

The modulation method will be explained below by a specific embodiment.

For example, the MCS table corresponding to the first codeword is the second MCS table, the second MCS table is Table 2, the first MCS index is 5, and the number of PRBs is 10. The terminal obtains the first codeword corresponding to the first codeword through the query table 2. A modulation order is 4, and the first transport block index is 10; the terminal obtains a transport block size corresponding to the first codeword by querying Table 3 to be 1736 bits. The modulation scheme corresponding to the modulation order of 4 is 16QAM, and 1736 bits of data are received according to the modulation scheme.

Table 7 (Table 7.1.7.2.1-1)

In summary, in the embodiment of the present invention, the access network device sends an instruction to configure the MCS table and the MCS index according to different codewords to the terminal, and solves the problem that the terminal uses the MCS table configured by the access network device to uniformly determine The modulation coding method is not necessarily accurate. It achieves the corresponding MCS table for different codewords. It can select more reasonable MCS for modulation and demodulation according to the channel conditions of different codewords, and improve access. The accuracy and reliability of data transmission between the network device and the terminal.

Further, by configuring an enhanced MCS table for different codewords, the enhanced MCS table includes three Or 4 entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data transmission using 1024QAM modulation, and improves data transmission efficiency.

Please refer to FIG. 4, which illustrates a method flowchart of an MCS determining method provided by another exemplary embodiment of the present invention, which is used in the mobile communication system shown in FIG. 1. The method includes:

In step 401, the access network device sends a DCI to the terminal, where the DCI carries the MCS table configuration information corresponding to the first codeword and the second codeword, and the first MCS index and the second codeword corresponding to the first codeword. Corresponding second MCS index, and the number of PRBs corresponding to the first codeword and the second codeword.

The access network device sends the DCI to the terminal. In an optional embodiment, the format of the DCI is DCI format 2, and the first 5 bits carried by the first network bit include the first MCS index and the number of PRBs corresponding to the first codeword. The second 5 bits carried by the second 5 bits contain the second MCS index and the number of PRBs corresponding to the second codeword. The first MCS index and the second MCS index are in the range of 0 to 31, and the number of PRBs corresponding to the first codeword and the second codeword is the same, and the number of the PRBs ranges from 1 to 110.

In an optional embodiment, the DCI carries the MCS table configuration information corresponding to the first codeword and the second codeword in the following manner.

The DCI includes a predetermined field including a first bit corresponding to the first codeword and a second bit corresponding to the second codeword.

When the first bit is the first value, the first codeword is configured to correspond to the first MCS table. When the first bit is the second value, the first codeword is configured to correspond to the second MCS table.

Specifically, the first value is 0, which is used to configure the first codeword to correspond to the first MCS table, and the second value is 1 to configure the first codeword to correspond to the second MCS table.

When the second bit is the first value, the second codeword is configured to correspond to the first MCS table; and when the second bit is the second value, the second codeword is configured to correspond to the second MCS table.

Specifically, the first value is 0, which is used to configure the first codeword to correspond to the first MCS table, and the second value is 1 to configure the first codeword to correspond to the second MCS table.

The first MCS table is an entry that does not include a modulation order that is a predetermined value, and the second MCS table includes an entry whose modulation order is the predetermined value.

In an optional embodiment, the first MCS table is Table 7.1.7.1-1 (Table 1) described in 3GPP protocol 36.213, and the second MCS table is Table 7.1.7.1-1A described in 3GPP protocol 36.213. (Table 2), the predetermined value of the modulation order is 8. It is not difficult to see that Table 7.1.7.1-1 does not contain an MCS index with a modulation order of 8, that is, the following Table 1 does not support downlink data transmission using 256QAM modulation.

In an optional embodiment, in order for LTE to support downlink data to adopt 1024QAM modulation transmission, the MCS table needs to include an entry with a modulation order of 10. In this embodiment, the first MCS table is Table 1 or Table 2, and the second MCS table is an enhanced MCS table, and the enhanced MCS table is an enhanced Table 1 or an enhanced Table 2. Wherein, the predetermined value of the modulation order is 10, and the second MCS table includes 3 or 4 entries with a modulation order of 10.

In step 402, the terminal receives the DCI sent by the access network device.

The terminal receives the MCS table configuration information corresponding to the first codeword and the second codeword sent by the access network device by using the DCI through the downlink control channel, the first MCS index corresponding to the first codeword and the second MCS corresponding to the second codeword The index, and the number of PRBs corresponding to the first codeword and the second codeword.

In step 403, the terminal configures an MCS table corresponding to the first codeword in at least two MCS tables according to the DCI sent by the access network device, and configures an MCS table corresponding to the second codeword in the at least two MCS tables.

The terminal receives the MCS table configuration information sent by the access network device, and if the MCS configuration information indicates that the first codeword corresponds to the first MCS table, the first MCS table is configured according to the indication; if the MCS configuration information indicates The first codeword corresponds to the second MCS table, and the second MCS table is configured for the first codeword according to the indication.

Similarly, the terminal receives the MCS table configuration information of the access network device, and if the MCS configuration information indicates that the second codeword corresponds to the first MCS table, the first MCS table is configured according to the indication; if the MCS configuration The information indicates that the second codeword corresponds to the second MCS table, and the second MCS table is configured for the second codeword according to the indication.

In step 404, the terminal queries the first modulation order corresponding to the first codeword and the first transport block index in the MCS table corresponding to the first codeword according to the first MCS index, according to the second MCS index. The second modulation order corresponding to the second codeword and the second transport block index are queried in the MCS table corresponding to the second codeword.

The MCS table includes three columns of MCS index, modulation order and transport block index, and the terminal receives the first MCS index and the number of PRBs corresponding to the first codeword sent by the access network device through the DCI, and the second corresponding to the second codeword. Querying, by the MCS index and the number of PRBs, the first modulation order corresponding to the first codeword and the first transport block index in the MCS table corresponding to the first codeword according to the first MCS index, according to the second MCS index in the second The second modulation order corresponding to the second codeword and the second transport block index are queried in the MCS table corresponding to the codeword.

In step 405, the terminal determines a transport block of the first codeword according to the first transport block index and the number of PRBs, and receives the transport block of the first codeword according to a modulation manner corresponding to the first modulation order; according to the second transport block. The index and the number of PRBs determine a transport block of the second codeword, and receive the transport block of the second codeword according to a modulation scheme corresponding to the second modulation order.

The terminal obtains the first modulation order, the first transport block index, and the number of PRBs corresponding to the first codeword, and the second modulation order, the second transport block index, and the number of PRBs corresponding to the second codeword.

For the first codeword, the terminal obtains the first transport block size by using a query table according to its corresponding first transport block index and PRB number. For example, Table 7.1.7.2.1-1 (Table 7) described in the 3GPP protocol 36.213 can be queried to obtain the first transport block size, and the first transport block is received according to the modulation scheme corresponding to the first modulation order. After determining the first transport block size corresponding to the first codeword and the corresponding layer, the first transport block can be received.

Similarly, for the second codeword, the terminal obtains the second transport block size by using the query table according to its corresponding second transport block index and the number of PRBs. For example, Table 7.1.7.2.1-1 (Table 7) described in 3GPP protocol 36.213 can be queried to obtain a second transport block size, and the second transport block is received according to a modulation scheme corresponding to the second modulation order. After determining the second transport block size corresponding to the second codeword and the corresponding layer, the second transport block can be received.

In summary, in the embodiment of the present invention, the access network device sends an instruction to configure the MCS table and the MCS index according to different codewords to the terminal, and solves the problem that the terminal uses the MCS table configured by the access network device to uniformly determine The modulation coding method is not necessarily accurate. It achieves the corresponding MCS table for different codewords. It can select more reasonable MCS for modulation and demodulation according to the channel conditions of different codewords, and improve access. The accuracy and reliability of data transmission between the network device and the terminal.

Further, in the embodiment of the present invention, by configuring an enhanced MCS table for different codewords, the enhanced MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink. The data adopts the problem of 1024QAM modulation transmission, which improves the data transmission efficiency.

Please refer to FIG. 5, which illustrates a method flowchart of an MCS determining method provided by another exemplary embodiment of the present invention, which is used in the mobile communication system shown in FIG. 1. The method includes:

In step 501, the access network device sends RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to n transport layers.

The RRC is located at the bottom of the third layer of the wireless communication network layer and is used for functions such as radio resources and control and management.

The access network device sends the RRC connectionReconfiguration signaling to the terminal, where the RRC connectionReconfiguration signaling is the RRC signaling sent by the access network device to the designated terminal, where the RRC connectionReconfiguration signaling carries the MCS table configuration information corresponding to the n transport layers, optionally, the The MCS table configuration information includes one or more cells, and the plurality of cells may also be n.

In an optional embodiment, the MCS table configuration information includes a cell, and when the cell takes different values, the value is used to indicate that the n transport layers configure respective MCS tables in at least two MCS tables. . For example, when the value is 0, the first transport layer is corresponding to the first MCS table, the second transport layer is corresponding to the second MCS table, ..., the ith transport layer corresponds to the first MCS table, ..., the nth transport layer Corresponding to the second MCS table; when the value is 1, indicating that the first transport layer corresponds to the first MCS table, the second transport layer corresponds to the first MCS table, ..., the i-th transport layer corresponds to the first MCS table, ... The nth transport layer corresponds to the first MCS table; when the value is 2, the first transport layer corresponds to the second MCS table, the second transport layer corresponds to the second MCS table, ..., the ith transport layer corresponds to the second MCS The table, ... the nth transport layer corresponds to the second MCS table, where 0 < i ≤ n.

In an optional embodiment, the MCS table configuration information includes a plurality of cells, where the plurality of cells are n, and each of the n cells has a first value or a second value. When the i-th cell is the first value, it is configured to configure the ith transport layer corresponding to the first MCS table, and when the ith cell is the second value, configured to configure the ith transport layer to correspond to the second MCS table.

In the above embodiment, the first MCS table does not include an entry whose modulation order is a predetermined value, and the second MCS table includes an entry whose modulation order is the predetermined value.

In an optional embodiment, the first MCS table is Table 7.1.7.1-1 (Table 1) described in 3GPP protocol 36.213, and the second MCS table is Table 7.1.7.1-1A described in 3GPP protocol 36.213. (Table 2), the predetermined value of the modulation order is 8. It is not difficult to see that Table 7.1.7.1-1 does not contain an MCS index with a modulation order of 8, that is, the following Table 1 does not support downlink data transmission using 256QAM modulation.

In an optional embodiment, in order for LTE to support downlink data to adopt 1024QAM modulation transmission, the MCS table needs to include an entry with a modulation order of 10. In this embodiment, the first MCS table is Table 1 or Table 2, and the second MCS table is an enhanced MCS table, and the enhanced MCS table is an enhanced Table 1 or an enhanced Table 2. Wherein, the predetermined value of the modulation order is 10, and the second MCS table includes 3 or 4 entries with a modulation order of 10.

In step 502, the terminal receives the RRC signaling sent by the access network device.

The terminal receives the RRC signaling sent by the access network device, where the signaling carries the MCS table configuration information corresponding to the n transport layers.

In step 503, the terminal configures an MCS table corresponding to each of the n transport layers in at least two MCS tables according to the MCS configuration information.

The terminal receives the MCS table configuration information corresponding to the n transport layers sent by the access network device, and configures an MCS table corresponding to each of the n transport layers in the first MCS table or the second MCS table according to the MCS table configuration information.

In step 504, the access network device sends a DCI to the terminal, where the DCI carries the MCS index corresponding to the n transport layers and the number of PRBs corresponding to the n transport layers.

The access network device sends a DCI to the terminal, where the DCI carries the MCS index corresponding to the n transport layers and the number of PRBs corresponding to the n transport layers.

The n transport layers are divided into two parts, the first part of the transport layer corresponds to the first MCS index, and the second part of the transport layer corresponds to the second MCS index. The access network device sends a DCI to the terminal, where the DCI carries the MCS index and the number of PRBs corresponding to the n transport layers, where the MCS index is the first MCS index and the second MCS index, where the n transport layers correspond to the same number of PRBs. The number of PRBs ranges from 1 to 110, and the MCS index ranges from 0 to 31.

In an optional embodiment, the format of the DCI is DCI format 2, where the DCI carries two bits, each bit contains 5 bits of information, and each bit includes an ith transmission layer corresponding to the ith transmission layer. The MCS index and the number of PRBs, the MCS index is a first MCS index or a second MCS index. The terminal may acquire information such as an ith modulation order, an ith transport block size index, and the like of the ith transport layer according to the MCS index corresponding to the ith transport layer.

In an alternative embodiment, the first partial transmission layer or the second partial transmission layer may be one layer, two layers or four layers.

When the first partial transmission layer and the second partial transmission layer are both one layer, n=2. The first transport layer belonging to the first part corresponds to the first MCS index, and the second transport layer belonging to the second part corresponds to the second MCS index. The correspondence between the one transport layer corresponding to one MCS index is a one-to-one correspondence.

When the first partial transmission layer and the second partial transmission layer are both layers, n=4. The first transport layer and the second transport layer belonging to the first part correspond to the first MCS index; the third transport layer and the fourth transport layer belonging to the second part correspond to the second MCS index. The correspondence between the two transport layers corresponding to one MCS index is a many-to-one correspondence.

When the first partial transmission layer and the second partial transmission layer are both four layers, n=8. The first to fourth transport layers belonging to the first part correspond to the first MCS index, and the fifth to eighth transport layers belonging to the second part correspond to the second MCS index. The correspondence between the above four transport layers corresponding to one MCS index is a many-to-one correspondence.

In step 505, the terminal receives the DCI sent by the access network device.

The terminal receives, by using the downlink control channel, the MCS index corresponding to the n transport layers sent by the access network device and the number of PRBs corresponding to the n transport layers.

In step 506, the terminal queries the ith modulation order and the ith transport block index corresponding to the ith transport layer in the MCS table corresponding to the ith transport layer according to the MCS index corresponding to the ith transport layer.

The MCS table includes the MCS index, the modulation order, and the transport block index three columns of information. The terminal receives the MCS index corresponding to the n transport layers sent by the access network device and the number of PRBs corresponding to the n transport layers, and determines the ith transport layer. The corresponding MCS index is queried according to the MCS index in the MCS table (the first MCS table or the second MCS table) corresponding to the ith configuration object, so that the ith modulation order corresponding to the ith configuration object and the ith are obtained. Transport block index.

In step 507, the terminal determines the ith transport block of the ith transport layer according to the ith transport block index and the number of PRBs, and receives the ith transport block according to a modulation scheme corresponding to the ith modulation order.

Through the above steps, the terminal obtains the ith modulation order, the ith transport block index, and the PRB number corresponding to the ith transport layer.

For the ith transport layer, the terminal obtains the ith transport block size by querying the table according to its corresponding ith transport block index and the number of PRBs. For example, Table 7.1.7.2.1-1 (Table 7) described in the 3GPP protocol 36.213 can be queried to obtain the ith transport block size, and the ith transport block is received according to the modulation scheme corresponding to the ith modulation order. After the ith transport block size corresponding to the ith transport layer and the corresponding layer are determined, the ith transport block can be received.

The modulation method will be explained below by a specific embodiment.

For example, the MCS table corresponding to the first transport layer is a second MCS table, the MCS table is Table 2, the first MCS index is 5, and the number of PRBs is 10. The terminal obtains the first modulation order corresponding to the first transport layer by querying the second table. The number is 4, the first transport block index is 10; the terminal obtains the transport block size corresponding to the first codeword by query table 3 to be 1736 bits. The modulation scheme corresponding to the modulation order of 4 is 16QAM, and 1736 bits of data are received according to the modulation scheme.

In summary, in the embodiment of the present invention, the access network device solves the problem that the terminal configures the MCS table and the MCS index according to different transport layers, and solves the problem that the terminal uses the MCS table configured by the access network device to uniformly determine. The modulation coding method is not necessarily accurate. It achieves the corresponding MCS table for different transport layers. It can select more reasonable MCS for modulation and demodulation according to the channel conditions of different transport layers, and improve access. The accuracy and reliability of data transmission between the network device and the terminal.

Further, in the embodiment of the present invention, by configuring an enhanced MCS table for different transport layers, the enhanced MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink. The data adopts the problem of 1024QAM modulation transmission, which improves the data transmission efficiency.

Please refer to FIG. 6, which is a flowchart of a method for determining an MCS according to another exemplary embodiment of the present invention, which is used in the mobile communication system shown in FIG. 1. The method includes:

In step 601, the access network device sends a DCI to the terminal, where the DCI carries the MCS table configuration information corresponding to the n transport layers, the MCS index and the PRB number corresponding to the n transport layers.

The n transport layers are divided into two parts, the first part of the transport layer corresponds to the first MCS index, and the second part of the transport layer corresponds to the second MCS index. The access network device sends a DCI to the terminal, where the DCI carries the MCS index and the number of PRBs corresponding to the n transport layers, where the MCS index is the first MCS index and the second MCS index, where the n transport layers correspond to the same number of PRBs. The number of PRBs ranges from 1 to 110, and the MCS index ranges from 0 to 31.

In an optional embodiment, the format of the DCI is DCI format 2, where the DCI carries two bits, each bit contains 5 bits of information, and each bit includes an ith transmission layer corresponding to the ith transmission layer. The MCS index and the number of PRBs, the MCS index is a first MCS index or a second MCS index. The terminal may obtain information such as an ith modulation order, an ith transport block size index, and the like of the ith transport layer according to the MCS index corresponding to the ith transport layer, where 0<i ≤ n.

In an alternative embodiment, the first partial transmission layer or the second partial transmission layer may be one layer, two layers or four layers.

When the first partial transmission layer and the second partial transmission layer are both one layer, n=2. The first transport layer belonging to the first part corresponds to the first MCS index, and the second transport layer belonging to the second part corresponds to the second MCS index. The correspondence between the one transport layer corresponding to one MCS index is a one-to-one correspondence.

When the first partial transmission layer and the second partial transmission layer are both layers, n=4. The first transport layer and the second transport layer belonging to the first part correspond to the first MCS index; the third transport layer and the fourth transport layer belonging to the second part correspond to the second MCS index. The correspondence between the two transport layers corresponding to one MCS index is a many-to-one correspondence.

When the first partial transmission layer and the second partial transmission layer are both four layers, n=8. The first to fourth transport layers belonging to the first part correspond to the first MCS index, and the fifth to eighth transport layers belonging to the second part correspond to the second MCS index. The correspondence between the above four transport layers corresponding to one MCS index is a many-to-one correspondence.

In an optional embodiment, the DCI carries the MCS table configuration information corresponding to the n transport layers in the following manner.

The DCI includes a predetermined field including n bits corresponding to n transport layers.

When the ith bit is the first value, the ith transport layer is configured to correspond to the first MCS table, and when the ith bit is the second value, the ith transport layer is configured to correspond to the second MCS table.

Specifically, the first value is 0, which is used to configure the ith transport layer to correspond to the first MCS table, and the second value is 1 to configure the ith transport layer to correspond to the second MCS table, where the first MCS table is not included. An entry whose modulation order is a predetermined value, and the second MCS table includes an entry whose modulation order is the predetermined value.

In an optional embodiment, the first MCS table is Table 7.1.7.1-1 (Table 1) described in 3GPP protocol 36.213, and the second MCS table is Table 7.1.7.1-1A described in 3GPP protocol 36.213. (Table 2), the predetermined value of the modulation order is 8. It is not difficult to see that Table 7.1.7.1-1 does not contain an MCS index with a modulation order of 8, that is, the following Table 1 does not support downlink data transmission using 256QAM modulation.

In an optional embodiment, in order for LTE to support downlink data to adopt 1024QAM modulation transmission, the MCS table needs to include an entry with a modulation order of 10. In this embodiment, the first MCS table is Table 1 or Table 2, and the second MCS table is an enhanced MCS table, and the enhanced MCS table is an enhanced Table 1 or an enhanced Table 2. Wherein, the predetermined value of the modulation order is 10, and the second MCS table includes 3 or 4 entries with a modulation order of 10.

In step 602, the terminal receives the DCI sent by the access network device.

The terminal receives, by using the downlink control channel, the MCS table configuration information corresponding to the n transport layers sent by the access network device, and the MCS index and the number of PRBs corresponding to the n transport layers.

In step 603, the terminal configures an MCS table corresponding to each of the n transport layers in at least two MCS tables according to the MCS configuration information.

The terminal receives the MCS table configuration information corresponding to the n transport layers sent by the access network device, and configures an MCS table corresponding to each of the n transport layers in the first MCS table or the second MCS table according to the MCS table configuration information.

In step 604, the terminal queries the ith modulation order and the ith transport block index corresponding to the ith transport layer in the MCS table corresponding to the ith transport layer according to the MCS index corresponding to the ith transport layer.

The MCS table includes the MCS index, the modulation order, and the transport block index three columns of information. The terminal receives the MCS index corresponding to the n transport layers sent by the access network device and the number of PRBs corresponding to the n transport layers, and determines the ith transport layer. Corresponding MCS index, according to the MCS index in the MCS table corresponding to the ith transport layer (the first MCS table or the second MCS table), the ith modulation order corresponding to the ith configuration object and the ith Transport block index.

In step 605, the terminal determines the ith transport block of the ith transport layer according to the ith transport block index and the number of PRBs, and receives the ith transport block according to a modulation scheme corresponding to the ith modulation order.

Through the above steps, the terminal obtains the ith modulation order, the ith transport block index, and the PRB number corresponding to the ith transport layer.

For the ith transport layer, the terminal obtains the ith transport block size by querying the table according to its corresponding ith transport block index and the number of PRBs. For example, Table 7.1.7.2.1-1 (Table 7) described in the 3GPP protocol 36.213 can be queried to obtain the ith transport block size, and the ith transport block is received according to the modulation scheme corresponding to the ith modulation order. After the ith transport block size corresponding to the ith transport layer and the corresponding layer are determined, the ith transport block can be received.

In summary, in the embodiment of the present invention, the access network device solves the problem that the terminal configures the MCS table and the MCS index according to different transport layers, and solves the problem that the terminal uses the MCS table configured by the access network device to uniformly determine. The modulation coding method is not necessarily accurate. It achieves the corresponding MCS table for different transport layers. It can select more reasonable MCS for modulation and demodulation according to the channel conditions of different transport layers, and improve access. The accuracy and reliability of data transmission between the network device and the terminal.

Further, in the embodiment of the present invention, the enhanced MCS table is configured by using different layers, the enhanced The MCS table includes three or four entries with a modulation order of 10, which solves the problem that the existing LTE does not support downlink data transmission using 1024QAM modulation, and improves data transmission efficiency.

The following is an apparatus embodiment of an embodiment of the present invention. For the parts that are not elaborated in the apparatus embodiment, reference may be made to the technical details disclosed in the foregoing method embodiments.

Please refer to FIG. 7, which is a schematic structural diagram of an MCS determining apparatus according to another exemplary embodiment of the present invention, which is used in the access network device 110 shown in FIG. 1. The device includes a first sending module 701 and a second sending module 702.

The first sending module 701 is configured to perform the functions of step 201, step 301, step 401, step 501, step 601, and other explicit or implicit transmission steps performed by the access network device.

The second sending module 702 is configured to perform the functions of step 204, step 304, and other explicit or implicit transmission steps performed by the access network device.

Please refer to FIG. 8 , which is a schematic structural diagram of an MCS determining apparatus according to another exemplary embodiment of the present invention, which is used in the terminal 120 shown in FIG. 1 . The device includes: a first receiving module 801, a configuration module 802, a second receiving module 803, and a query module 804.

The first receiving module 801 is configured to perform the functions of step 202, step 302, step 402, step 502, step 602, and other explicit or implicit at least one receiving step performed by the terminal.

The configuration module 802 is configured to perform the functions of step 203, step 303, step 403, step 503, step 603, and other explicitly or implicitly configured steps performed by the terminal.

The second receiving module 803 is configured to perform the functions of step 205, step 305, step 307, step 405, step 505, step 507, step 605, and other explicit or implicit at least one receiving step performed by the terminal.

The query module 804 is configured to perform the functions of step 206, step 306, step 404, step 506, step 604, and other explicit or implicit at least one query step performed by the terminal.

Please refer to FIG. 9 , which is a schematic structural diagram of an access network device according to an exemplary embodiment of the present invention. The access network device may be the access network device 110 in the implementation environment shown in FIG. 1 . In this embodiment, the access network device 110 is used as an eNB in the LTE system, or the gNB in the 5G system is used as an example. The access network device includes: a processor 91 transmitter 92 and a bus 93.

The processor 91 includes one or more processing cores, and the processor 91 executes various functional applications and information processing by running software programs and modules.

Transmitter 92 is coupled to processor 91 via bus 93.

The processor 91 is configured to send MCS table configuration information corresponding to n configuration objects to the terminal by using the transmitter 92, where the MCS table configuration information is used to configure an MCS table corresponding to each of the n configuration objects in the at least two MCS tables.

The processor 91 is further configured to send a DCI to the terminal by using the transmitter 92, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is in the MCS table corresponding to the ith configuration object according to the MCS index corresponding to the ith configuration object. And querying the ith modulation order and the ith transport block index corresponding to the ith configuration object, 0<i ≤ n.

The configuration object is a codeword or a transport layer, and the at least two MCS tables include a first MCS table and a second MCS table, where the first MCS table does not include an entry with a modulation order of a predetermined value, and the second MCS table Medium package An entry whose modulation order is a predetermined value.

In addition, the transmitter 92 is also used to implement the functions related to the transmitting step in the various method embodiments described above.

Please refer to FIG. 10, which is a schematic structural diagram of a terminal according to an exemplary embodiment of the present invention. The terminal may be the terminal device 120 in the mobile communication system shown in FIG. 1. This embodiment is described by taking the terminal 120 as an LTE system or a UE in a 5G system. The terminal device includes a processor 101, a receiver 102, and a bus 103.

The processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.

The receiver 102 can be a communication chip. The communication chip can include a receiving module, a modem module, and the like for modulating and/or demodulating information and receiving the information through a wireless signal.

Receiver 102 is coupled to processor 101 via bus 103.

The receiver 102 is configured to receive MCS table configuration information corresponding to the n configuration objects sent by the access network device.

The processor 101 is configured to configure an MCS table corresponding to each of the n configuration objects in the at least two MCS tables according to the MCS table configuration information.

The receiver 102 is further configured to receive a DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects.

The processor 101 is further configured to query the ith modulation order and the ith transport block index corresponding to the ith configuration object in the MCS table corresponding to the ith configuration object according to the MCS index corresponding to the ith configuration object, 0< i ≤ n.

The configuration object is a codeword or a transport layer, and the at least two MCS tables include a first MCS table and a second MCS table, where the first MCS table does not include an entry with a modulation order of a predetermined value, and the second MCS table The entry includes a table whose modulation order is a predetermined value.

In addition, the receiver 102 is further configured to implement the functions related to the receiving step in the foregoing various method embodiments; the processor 101 is further configured to implement the functions related to the configuration and query steps in the foregoing method embodiments.

The embodiment of the present invention further provides a modulation and coding mode determining system, where the modulation and coding mode determining system includes an access network device and a terminal.

The access network device includes the MCS determining device provided in FIG. 7 above, and the terminal includes the MCS determining device provided in FIG. 8 above;

or,

The access network device includes the access network device provided in FIG. 9 above, and the terminal includes the terminal provided in FIG. 10 above.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above description is only an optional embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the protection of the present application. Within the scope.

Claims (30)

A modulation and coding mode MCS determining method, characterized in that the method comprises: The access network device sends the MCS table configuration information corresponding to the n configuration objects to the terminal, where the MCS table configuration information is used to configure the MCS table corresponding to each of the n configuration objects in the at least two MCS tables; The access network device sends downlink control information DCI to the terminal, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is configured to use an MCS index corresponding to the ith configuration object. ???in the MCS table corresponding to the ith configuration object, querying an ith modulation order and an ith transmission block index corresponding to the ith configuration object, 0<i ≤ n; The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value. The method according to claim 1, wherein the access network device sends the MCS table configuration information corresponding to the n configuration objects to the terminal, including: The access network device sends radio resource control RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects. The method according to claim 1, wherein the access network device sends the MCS table configuration information corresponding to the n configuration objects to the terminal, including: The access network device sends the DCI to the terminal, where the DCI carries MCS table configuration information corresponding to the n configuration objects. The method according to claim 3, wherein the DCI includes a predetermined domain; The predetermined domain includes n bits corresponding to the n configuration objects; When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table. The method according to any one of claims 1 to 4, wherein the predetermined value is 10, and the second MCS table includes 3 or 4 entries having a modulation order of 10. An MCS determining method, the method comprising: The terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device; The terminal configures an MCS table corresponding to each of the n configuration objects in at least two types of MCS tables according to the MCS table configuration information; Receiving, by the terminal, the DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects; The terminal is in the MCS table corresponding to the ith configuration object according to the MCS index corresponding to the ith configuration object Grid, querying the ith modulation order and the ith transport block index corresponding to the ith configuration object, 0<i ≤ n; The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value. The method according to claim 6, wherein the terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device, including: The terminal receives the RRC signaling sent by the access network device, where the RRC signaling carries the MCS table configuration information corresponding to the n configuration objects. The method according to claim 6, wherein the terminal receives the MCS table configuration information corresponding to the n configuration objects sent by the access network device, including: The terminal receives the DCI sent by the access network device, where the DCI carries the MCS table configuration information corresponding to the n configuration objects. The method according to claim 8, wherein the DCI includes a predetermined domain; The predetermined domain includes n bits corresponding to the n configuration objects; When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table. The method according to any one of claims 6 to 9, wherein the predetermined value is 10, and the second MCS table includes 3 or 4 entries having a modulation order of 10. An MCS determining device, characterized in that the device comprises: a first sending module, configured to send, to the terminal, MCS table configuration information corresponding to the n configuration objects, where the MCS table configuration information is used to configure an MCS table corresponding to each of the n configuration objects in the at least two MCS tables; a second sending module, configured to send a DCI to the terminal, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is configured to use the MCS index corresponding to the ith configuration object In the MCS table corresponding to the i-th configuration object, querying the ith modulation order and the ith transport block index corresponding to the ith configuration object, 0<i ≤ n; The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value. The device according to claim 11, wherein the first sending module is configured to send RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects. . The device according to claim 11, wherein the first sending module is configured to send the DCI to the terminal, where the DCI carries MCS table configuration information corresponding to the n configuration objects. The apparatus according to claim 13, wherein said DCI includes a predetermined domain; The predetermined domain includes n bits corresponding to the n configuration objects; When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table. The apparatus according to any one of claims 11 to 14, wherein said predetermined value is 10, and said second MCS table includes 3 or 4 entries having a modulation order of 10. An MCS determining device, characterized in that the device comprises: a first receiving module, configured to receive MCS table configuration information corresponding to n configuration objects sent by the access network device; a configuration module, configured to configure, in the at least two MCS tables, an MCS table corresponding to each of the n configuration objects according to the MCS table configuration information; a second receiving module, configured to receive a DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects; a querying module, configured to query an ith modulation order and an ith transport block corresponding to the ith configuration object in an MCS table corresponding to the ith configuration object according to an MCS index corresponding to the ith configuration object Index, 0 < i ≤ n; The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value. The device according to claim 16, wherein the first receiving module is configured to receive RRC signaling sent by the access network device, where the RRC signaling carries the n configuration objects corresponding to MCS table configuration information. The device according to claim 16, wherein the first receiving module is configured to receive the DCI sent by the access network device, where the DCI carries an MCS table corresponding to the n configuration objects. Configuration information. The apparatus according to claim 18, wherein said DCI includes a predetermined domain; The predetermined domain includes n bits corresponding to the n configuration objects; When the ith bit of the n bits is the first value, the ith configuration object of the n configuration objects is configured to correspond to the first MCS table; the ith bit is When the value is two, the ith configuration object is configured to correspond to the second MCS table. The apparatus according to any one of claims 16 to 19, wherein said predetermined value is 10, and said second MCS table includes 3 or 4 entries having a modulation order of 10. An access network device, comprising: a processor and a transmitter; The processor is configured to send MCS table configuration information corresponding to n configuration objects to the terminal by using the transmitter, The MCS table configuration information is used to configure an MCS table corresponding to each of the n configuration objects in at least two MCS tables; The processor is further configured to send a DCI to the terminal by using the transmitter, where the DCI carries an MCS index corresponding to the n configuration objects, and the terminal is configured to be configured according to the ith configuration object. The MCS index queries the ith modulation order and the ith transport block index corresponding to the ith configuration object in the MCS table corresponding to the ith configuration object, where 0<i ≤ n; The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value. The access network device according to claim 21, wherein the transmitter is configured to send RRC signaling to the terminal, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects. . The access network device according to claim 21, wherein the transmitter is configured to send the DCI to the terminal, and the DCI carries MCS table configuration information corresponding to the n configuration objects. The access network device according to any one of claims 21 to 23, wherein the predetermined value is 10, and the second MCS table includes three or four entries having a modulation order of 10. A terminal, comprising: a receiver and a processor; The receiver is configured to receive MCS table configuration information corresponding to n configuration objects sent by the access network device; The processor is configured to configure, according to the MCS table configuration information, an MCS table corresponding to each of the n configuration objects in at least two types of MCS tables, where 0<i≤n; The receiver is further configured to receive a DCI sent by the access network device, where the DCI carries an MCS index corresponding to the n configuration objects; The processor is further configured to query, according to the MCS index corresponding to the ith configuration object, an ith modulation order corresponding to the ith configuration object and an MCS table corresponding to the ith configuration object. i transport block index; The configuration object is a codeword or a transport layer, and the at least two types of MCS tables include a first MCS table and a second MCS table, and the first MCS table does not include an entry whose modulation order is a predetermined value. The second MCS table includes an entry whose modulation order is the predetermined value. The terminal according to claim 25, wherein the receiver is configured to receive RRC signaling sent by the access network device, where the RRC signaling carries MCS table configuration information corresponding to the n configuration objects. The terminal according to claim 25, wherein the receiver is configured to receive the DCI sent by the access network device, where the DCI carries MCS table configuration information corresponding to the n configuration objects. The terminal according to any one of claims 25 to 27, wherein the predetermined value is 10, and the second MCS table includes three or four entries having a modulation order of 10. A modulation and coding mode determining system, characterized in that the system comprises an access network device and a terminal; The access network device comprises the device according to any one of claims 11 to 14; The terminal comprises a device as claimed in any one of claims 16 to 19. A modulation and coding mode determining system, characterized in that the system comprises an access network device and a terminal; The access network device includes the access network device according to any one of claims 21 to 23; The terminal comprises the terminal of any one of claims 25 to 27.

Images