CN115276908B

CN115276908B - Wireless communication method, device and storage medium

Info

Publication number: CN115276908B
Application number: CN202210877837.9A
Authority: CN
Inventors: 汪玲
Original assignee: Zeku Technology Beijing Corp Ltd
Current assignee: Zeku Technology Beijing Corp Ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-09-22
Anticipated expiration: 2042-07-25
Also published as: WO2024021652A1; CN115276908A

Abstract

The application discloses a wireless communication method, equipment and a storage medium, wherein the method comprises the following steps: selecting a first modulation mode set from a plurality of modulation modes supported by terminal equipment according to the reference channel information; selecting a target modulation mode from the first modulation mode set; and generating a first channel quality indication based on the mutual information corresponding to the target modulation mode.

Description

Wireless communication method, device and storage medium

Technical Field

The present application relates to mobile communication technologies, and in particular, to a wireless communication method and apparatus, and a storage medium.

Background

The resource scheduling and link adaptation strategies in the long term evolution (Long Term Evolution, LTE)/New Radio (NR) system are completely controlled by the base station, and the base station selects a proper modulation coding mode grade for the UE through uplink channel quality indication (Channel Quantity Indicator, CQI) or downlink CQI, so as to achieve the purpose of optimizing the throughput of the system according to the channel quality information, and how to reduce the computational complexity of the CQI is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, wireless communication equipment and a storage medium, which can reduce the calculation complexity of CQI.

The technical scheme of the embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a wireless communication method, including;

selecting a first modulation mode set from a plurality of modulation modes supported by terminal equipment according to the reference channel information;

selecting a target modulation mode from the first modulation mode set;

and generating a first channel quality indication based on the mutual information corresponding to the target modulation mode.

In a second aspect, an embodiment of the present application provides a communications device comprising a processor configured to:

selecting a target modulation mode from the first modulation mode set;

In a third aspect, an embodiment of the present application provides a communication device including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the above-described wireless communication method when executing the computer program.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described wireless communication method.

In a fifth aspect, a chip provided by an embodiment of the present application is used to implement the above wireless communication method, where the chip includes: and a processor for calling and running the computer program from the memory, so that the device mounted with the chip executes the wireless communication method.

According to the wireless communication method, the wireless communication device and the wireless communication storage medium provided by the embodiment of the application, a first modulation mode set is selected from a plurality of modulation modes supported by terminal equipment according to reference channel information; selecting a target modulation mode from the first modulation mode set; generating a first channel quality indication based on mutual information corresponding to the target modulation mode; and the first modulation mode set which is possibly adopted by the current channel is predicted by referring to the channel information, and the CQI value is calculated based on the predicted first modulation mode set, so that the CQI value is not required to be determined according to all modulation modes supported by the terminal equipment on the basis of not losing the performance of the channel, and the calculation complexity of the CQI is reduced.

Drawings

FIG. 1 is a schematic diagram of an alternative architecture of a communication system provided by an embodiment of the present application;

fig. 2A is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

Fig. 2B is a schematic flow chart of an alternative method of wireless communication according to an embodiment of the present application;

fig. 3 is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

fig. 4 is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

fig. 5 is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

fig. 6 is a schematic flow chart of an alternative method of wireless communication according to an embodiment of the present application;

fig. 7 is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

fig. 8 is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

fig. 9 is a schematic flow chart of an alternative wireless communication method according to an embodiment of the present application;

fig. 10 is a schematic diagram of an alternative configuration of a wireless communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 12 is a schematic block diagram of a chip of an embodiment of the application;

fig. 13 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The present application will be further described in detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present application more apparent, and the described embodiments should not be construed as limiting the present application, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present application.

The embodiment of the application can be provided as a wireless communication method, a device, equipment and a storage medium. In practical applications, the wireless communication method may be implemented by a wireless communication device, and each functional entity in the wireless communication device may be cooperatively implemented by a hardware resource of a computer device (e.g., an electronic device such as a terminal device or a network device), a computing resource such as a processor, and a communication resource (e.g., for supporting communications in various manners such as implementing an optical cable or a cellular).

Of course, the embodiments of the present application are not limited to being provided as methods and hardware, but may be implemented in a variety of ways, such as being provided as a storage medium (storing instructions for performing the wireless communication methods provided by the embodiments of the present application).

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air interface. Multi-service transmission is supported between terminal device 110 and network device 120.

It should be understood that embodiments of the present application are illustrated by way of example only with respect to communication system 100, and embodiments of the present application are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: LTE system, LTE time division duplex (Time Division Du plex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), internet of things (Inter net of Things, ioT) system, narrowband internet of things (Narrow Band Internet of Things, NB-IoT) system, enhanced Machine-type-Type Communications, eMTC) system, fifth generation (5th generation,5G) communication system (also referred to as NR communication system), or future communication system, etc.

In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal device 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., user Equipment (UE)) located within the coverage area.

The network device 120 may be an evolved base station (Evolutional No de B, eNB or eNodeB) in a long term evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 may be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Terminal device 110 may be any terminal device including, but not limited to, a terminal device that employs a wired or wireless connection with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, UE, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, an IoT device, a satellite handset, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handset with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example a session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device of the core network. It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C. In the network evolution process, the core network device may also call other names, or form new network entities by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through a Uu interface, and is used for transmitting user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with AMF through NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with AMF through NG interface 2 (N2 for short); the UPF can establish control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with the data network through an NG interface 6 (N6 for short); the AMF may establish a control plane signaling connection with the SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily illustrates one base station, one core network device, and two terminal devices, alternatively, the wireless communication system 100 may include a plurality of base stations and each base station may include other number of terminal devices within a coverage area, which is not limited by the embodiment of the present application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description describes related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the protection scope of the embodiments of the present application.

It should be noted that fig. 1 is only an exemplary system to which the present application is applicable, and of course, the method shown in the embodiment of the present application may be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B. It should also be understood that "corresponding" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, may mean that there is an association between the two, and may also be a relationship between an instruction and an indicated, configured, or the like. It should also be understood that "predefined" or "predefined rules" mentioned in the embodiments of the present application may be implemented by pre-storing corresponding codes, tables or other manners in which related information may be indicated in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation thereof. Such as predefined may refer to what is defined in the protocol. It should be further understood that, in the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited by the present application.

The resource scheduling and link self-adaptive strategy in the LTE/NR system is completely controlled by the base station, and the base station selects a proper modulation coding mode grade for the UE through the uplink CQI or the downlink CQI value so as to achieve the aim of optimizing the throughput of the system according to the channel quality information. It is understood that the modulation and coding scheme level can indicate the modulation scheme and the coding rate.

For uplink CQI, namely CQI measured by a base station, the base station obtains a value of a signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) representing link quality information through measurement of a sounding reference signal (Sounding Reference Signal, SRS), then calculates the value of the CQI according to the SINR value, and selects proper frequency domain resources and modulation coding mode grades for UE according to the value of the CQI. As shown in fig. 2A, the base station 210 obtains an SRS measurement result through measurement of the physical layer 211, transmits the SRS measurement result to the medium access control (Medium Access Control, MAC) layer 212, and the MAC layer 212 obtains a CQI value based on the SRS measurement result and determines a modulation coding scheme level, a time-frequency resource location, and a redundancy version (Redundancy Version, RV) version number based on the CQI value. Optionally, the physical layer 211 also reports cyclic redundancy check (Cyclic Redundancy Check, CRC) check information to the layer 212.

For downlink CQI, namely CQI calculated by a terminal, the terminal firstly calculates the value of the CQI and feeds back the CQI to a base station through an uplink channel, and then the base station selects proper frequency domain resources, modulation coding mode level and transmission mode for UE according to the fed-back value of the CQI. As shown in fig. 2B, the physical layer 221 of the UE220 calculates a CQI value and transmits the CQI value to the physical layer 211 of the base station 210, the physical layer 211 transmits the received CQI value to the MAC layer 212, and the MAC layer 212 selects the following for the UE220 according to the CQI value fed back by the UE: transmission scheme, multiple-Input Multiple-Output (MIMO) scheme, modulation coding scheme level, time-frequency resource location, and RV version number.

In the embodiment of the application, the uplink CQI or the downlink CQI is uniformly described as CQI, wherein the uplink CQI is CQI calculated by the base station through the equivalent SINR value obtained by measurement, and the downlink CQI is CQI fed back to the base station by the UE.

When calculating CQI, the UE or the base station maps the detected SINR value to the mutual information (Mutual Information, MI) according to the mapping (SINR to MI mapping) of the SINR value to the mutual information (Mutual Information, MI), or maps the detected SINR value to the detected MI value according to the mapping of the channel capacity to the MI, where the MI value corresponds to the actual modulation mode, for example, the upper limit of the MI value corresponding to quadrature phase shift keying (Quad-Phase Shift Keyed, QPS K) modulation is 2, the upper limit of the MI value corresponding to 16 quadrature amplitude phase modulation (Quadrature Amplitude Modulation, QAM) is 4, the upper limit of the MI value corresponding to 64QAM is 6, and the upper limit of the MI value corresponding to 256QAM is 8, so that the corresponding MI values need to be calculated for different modulation modes respectively in the process of mapping the SINR value or the capacity to the MI, and finally, when calculating the final MI value, the final MI value needs to be traversed to obtain the maximum MI value, and the final MI value needs to be obtained. The modulation modes supported by the UE comprise: QPSK,16QAM,64QAM, 256QAM is taken as an example, and the implementation process of calculating the CQI value is as shown in fig. 3:

S301, calculating the value of the equivalent signal to noise ratio or the value of the capacity according to the equivalent channel state information.

According to equivalent channel state information H _eq,i A minimum mean-square error (MMSE) detection or Sphere Decoder (SD) detection is calculated for the corresponding value of equivalent signal-to-noise ratio or capacity.

Alternatively, the value of the equivalent signal-to-noise ratio is calculated by formula (1), and the value of the capacity is calculated by formulas (1) and (2):

C _i,l ＝log2(1+γ _i,l ) Formula (2);

where i is a sample point index, the value of i is smaller than the number N of sample points in the subband or wideband, l is a layer index, and the value of l may be equal to 1 or smaller than 1. Gamma ray _i,l Equivalent signal-to-noise ratio corresponding to the layer number l of the sample point i, C _i,l I layers/for sample pointsCorresponding capacity, I is the identity matrix.

Here, the number of sample points is the number of subcarriers, and the number of layers refers to the value of the supported rank (rank), where the value of the rank is used to indicate the number of streams of the maximum MIMO supported by the terminal, that is, how many data streams can be transmitted by the terminal device, where the rank of rank is understood as the number of transmission layers.

S302, traversing all the modulation modes, and determining the MI value corresponding to each modulation mode according to the value of the equivalent signal-to-noise ratio or the value of the capacity.

Here, the value of MI is the value of MI of the subband or wideband.

In S302, as shown in fig. 4, the method includes:

s3021, wherein the initial m is 1;

s3022, calculating a value of MI corresponding to the mth modulation mode;

after calculating the value of the MI corresponding to the mth modulation mode, if the value of m is smaller than the maximum value of m, S3023 is executed, otherwise, it is considered that all the modulation modes are traversed, and the value of the MI corresponding to all the modulation modes is calculated.

The value of S3023, m is increased by 1.

The value of m is added to 1, and S2023 is continued to calculate the value of MI corresponding to the mth modulation scheme.

Here, the value range of m is determined based on the number of modulation schemes supported by the terminal device, and if the terminal device supports 4 modulation schemes, the value of m is 1 to 4.

The mth modulation scheme among all the modulation schemes is calculated by steps S30221 and S30222 shown in fig. 5 to obtain the value of MI corresponding to the mth modulation scheme, wherein the value of m is 1 to 4, the modulation scheme is QPSK when m is 1, the modulation scheme is 16QAM when m is 2, the modulation scheme is 64QAM when m is 3, and the modulation scheme is 256QAM when m is 4.

As shown in fig. 5, the calculation of the value of MI corresponding to the mth modulation scheme includes the steps of:

s30221, mapping the equivalent SINR value or capacity value to the value of MI.

Mapping the equivalent SINR value to the value of MI as shown in equation (3) or mapping the value of capacity to the value of MI as shown in equation (4):

Wherein, the liquid crystal display device comprises a liquid crystal display device,the MI corresponding to the number of layers i of the sample point i in the mth modulation scheme is shown.

And S30222, accumulating the MI values at each sample point to obtain the MI value corresponding to the mth modulation mode.

MI value corresponding to mth modulation schemeThe calculation of (2) is shown in formula (5):

s303, selecting the value of the largest MI from the values of the MI corresponding to all the modulation schemes as the final value of the MI.

Final MI valueCan be expressed as formula (6):

s304, obtaining the corresponding CQI value according to the MI value and the MI-to-CQI mapping.

Mapping is needed to be performed on all modulation modes in the MI accumulation process of sample points from the SINR value or the capacity value to MI mapping, for example, the UE maximally supports 64QAM, 3 modulation modes are needed to be mapped, the UE maximally supports 256QAM, 4 modulation modes are needed to be mapped, and when the UE supports 1024QAM, 5 modulation modes are needed to be mapped, and the complexity is linearly increased along with the increase of the modulation modes.

Embodiments of a wireless communication method, apparatus, device, and storage medium according to the embodiments of the present application are described below with reference to a schematic diagram of a communication system shown in fig. 1.

The wireless communication method provided by the embodiment of the application is applied to communication equipment, wherein the communication equipment can be terminal equipment or network equipment, as shown in fig. 6, and comprises the following steps:

S601, the communication equipment selects a first modulation mode set from a plurality of modulation modes supported by the terminal equipment according to the reference channel information.

The communication device selects a partial modulation scheme from a plurality of modulation schemes supported by the terminal device to form a first modulation scheme set, wherein the first modulation scheme set comprises one or more modulation schemes.

In an example, the modulation scheme supported by the terminal device includes: the first modulation mode set selected by the communication device from modulation modes supported by the terminal device includes the following modulation modes: QPSK, 16QAM, 64QAM.

In the embodiment of the present application, the communication device may support one or more of the following selection methods for selecting the first modulation method set from the modulation methods supported by the terminal device:

selecting a first selection mode and randomly selecting;

and selecting a second selection mode according to the reference channel information.

In alternative two, the reference channel information may be a priori channel information. Alternatively, the reference channel information may include: one or more of a signal-to-noise ratio of a signal transmitted by the network device and a second CQI, wherein the signal-to-noise ratio of the signal transmitted by the network device may be determined by channel state information (Channel State Information, CSI), and the second CQI is a previous CQI corresponding to the terminal device.

In the embodiment of the present application, the selection manner of selecting the first modulation manner set by the communication device is not limited.

In the embodiment of the application, when the communication equipment selects the first modulation mode set from the modulation modes supported by the terminal equipment, the communication equipment can directly select part of the modulation modes from the modulation modes supported by the terminal equipment to form the first modulation mode set, and can divide the modulation modes supported by the terminal equipment into a plurality of different candidate modulation mode sets, and select the first modulation mode set based on the plurality of candidate modulation mode sets.

In the case that a plurality of modulation schemes supported by the terminal device are divided into at least two candidate modulation scheme sets, a union of the modulation schemes included in the at least two candidate modulation scheme sets is all the modulation schemes supported by the terminal device, and the modulation schemes included in different candidate modulation scheme sets are different, wherein one candidate modulation scheme set includes at least one modulation scheme supported by the terminal device.

The first modulation scheme set selected by the communication device may be one candidate modulation scheme set of the plurality of candidate modulation scheme sets, or may be a subset of one candidate modulation scheme set of the plurality of candidate modulation scheme sets.

In an example, the modulation scheme supported by the terminal device includes: the modulation modes supported by the terminal equipment are divided into the following two candidate modulation mode sets: a candidate modulation scheme set 1 including a first modulation scheme and a second modulation scheme, a candidate modulation scheme set 2 including a second modulation scheme, a third modulation scheme and a fourth modulation scheme, and a target modulation scheme set being the candidate modulation scheme set 2, at this time, at least one target modulation scheme includes: modulation scheme II, modulation scheme III and modulation scheme IV.

In an example, the modulation scheme supported by the terminal device includes: the modulation modes supported by the terminal equipment are divided into the following two candidate debugging mode sets: a candidate modulation scheme set 1 including a first modulation scheme and a second modulation scheme, a candidate modulation scheme set 2 including a second modulation scheme, a third modulation scheme and a fourth modulation scheme, the target modulation scheme set being a subset { modulation scheme three, modulation scheme four } of the candidate modulation scheme set 2, at least one target modulation scheme including: modulation scheme three and modulation scheme four.

In some embodiments, at least one of the following of the different candidate modulation scheme sets is different:

parameter 1, maximum modulation order, the maximum modulation order is the maximum modulation order in the modulation orders corresponding to each modulation mode included in the candidate modulation mode set;

parameter 2, the minimum modulation order, the said minimum modulation order is the minimum modulation order in the modulation orders that each modulation mode that the said candidate modulation mode set includes corresponds to;

parameter 3, number of modulation schemes included.

For parameter 1, the maximum modulation order of a candidate modulation scheme set is the maximum modulation order of the modulation orders corresponding to the modulation schemes included in the candidate modulation scheme set. It can be understood that the modulation order corresponding to the modulation scheme indicates the number of bits transmitted by the next symbol in the modulation scheme, for example: the modulation order corresponding to QPSK is 2, the modulation order corresponding to 16QAM is 4, the modulation order corresponding to 64QAM is 6, and the modulation order corresponding to 256QAM is 8.

In an example, if the candidate modulation scheme set a includes QPSK and 16QAM, the maximum modulation order of the candidate modulation scheme set a is 4.

For parameter 2, the minimum modulation order of a candidate modulation scheme set is the minimum modulation order of the modulation orders corresponding to the modulation schemes included in the candidate modulation scheme set.

In an example, the candidate modulation scheme set a includes QPSK and 16QAM, and the minimum modulation order of the candidate modulation scheme set a is 2.

In the embodiment of the present application, one or more parameters 1, 2 and 3 of different candidate modulation mode sets are different in at least two candidate modulation mode sets divided by a plurality of modulation modes supported by the terminal device.

In an example, the modulation scheme supported by the terminal device includes: QPSK, 16QAM, 64QAM and 256QAM, wherein at least two candidate modulation mode sets comprise a candidate modulation mode set 1 and a candidate modulation mode set 2, and the candidate modulation mode set 1 comprises the following modulation modes: QPSK, 16QAM, 64QAM, candidate modulation scheme set 2 includes the following modulation schemes: in 16QAM, 64QAM, and 256QAM, the maximum modulation order and the minimum modulation order of the candidate modulation scheme set 1 and the candidate modulation scheme set 2 are different, the maximum modulation order of the candidate modulation scheme set 1 is 6, the minimum modulation order of the candidate modulation scheme set 1 is 2, the maximum modulation order of the candidate modulation scheme set 2 is 8, and the minimum modulation order of the candidate modulation scheme set 2 is 4.

In an example, the modulation scheme supported by the terminal device includes: QPSK, 16QAM, 64QAM and 256QAM, wherein at least two candidate modulation mode sets comprise a candidate modulation mode set 1 and a candidate modulation mode set 2, and the candidate modulation mode set 1 comprises the following modulation modes: 16QAM, 64QAM, candidate modulation scheme set 2 includes the following modulation schemes: in 16QAM, 64QAM, and 256QAM, the maximum modulation order and the number of modulation schemes included in candidate modulation scheme set 1 and candidate modulation scheme set 2 are different, the maximum modulation order of candidate modulation scheme set 1 is 6, the number of modulation schemes included in candidate modulation scheme set 1 is 2, the maximum modulation order of candidate modulation scheme set 2 is 8, and the number of modulation schemes included in candidate modulation scheme set 2 is 3.

S602, the communication equipment selects a target modulation mode from the first modulation mode set.

When the first modulation scheme set includes one modulation scheme, the communication device determines the modulation scheme as a target modulation scheme, and calculates a first CQI, which is a current CQI of the channel, based on the target modulation scheme.

When the first modulation scheme set includes a plurality of modulation schemes, the communication device selects one modulation scheme from the first modulation scheme set as a target modulation scheme, and calculates the first CQI based on the target modulation scheme.

In an example, the modulation scheme supported by the terminal device includes: QPSK,16QAM,64QAM and 256QAM, wherein the first modulation mode set selected by the communication equipment from the modulation modes supported by the terminal equipment is { QPSK,16QAM,64QAM }, at the moment, the communication equipment selects 16QAM from the first modulation mode set { QPSK,16QAM,64QAM } as a target modulation mode, calculates the first CQI based on the 16QAM, and all the modulation modes supported by the terminal equipment are not needed: the target modulation scheme is selected from QPSK,16QAM,64QAM and 256 QAM.

And S603, the communication equipment generates a first CQI based on the MI corresponding to the target modulation mode.

The communication device selects a target modulation scheme from a plurality of modulation schemes supported by the terminal device, and calculates a first CQI based on the target modulation scheme. It can be appreciated that the first CQI is used by the base station to select at least one of the following for the terminal device: frequency domain resource, modulation mode, transmission mode. Wherein the transmission mode indicates the size of the data block.

It can be appreciated that the value of the first CQI is used to reflect the channel quality of the first channel of the terminal device. The first channel is a channel for uplink traffic or downlink traffic of the terminal device. Optionally, the first channel includes: physical downlink shared channel (Physical Downlink Shared Chann el, PDSCH), physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), and the like.

Optionally, the communication device is a network device, where the first CQI belongs to an uplink CQI, and the corresponding first CQI belongs to an uplink CQI.

Optionally, the communication device is the terminal device, and the first CQI belongs to a downlink CQI, and the corresponding first CQI belongs to a downlink CQI.

According to the wireless communication method provided by the embodiment of the application, a first modulation mode set is selected from a plurality of modulation modes supported by terminal equipment according to reference channel information; selecting a target modulation mode from the first modulation mode set; generating a first CQI based on the MI corresponding to the target modulation mode; and the first modulation mode set which is possibly adopted by the current channel is predicted by referring to the channel information, and the CQI value is calculated based on the predicted first modulation mode set, so that the CQI value is not required to be determined according to all modulation modes supported by the terminal equipment on the basis of not losing the performance of the channel, and the calculation complexity of the CQI is reduced.

In some embodiments, the manner in which the communication device selects the first modulation scheme set from the plurality of modulation schemes supported by the terminal device according to the reference channel information in S601 may include at least one of the following:

selecting the first modulation mode set from a plurality of modulation modes according to the signal-to-noise ratio of a signal sent by network equipment;

and selecting the first modulation mode set from the plurality of modulation modes according to the second CQI.

For mode one

The reference channel information includes a signal-to-noise ratio (snr) of a signal sent by the network device, where the Snr (SINR) of the signal sent by the network device may be indicated by CSI, where CSI is information indicating propagation characteristics of a channel reported by the terminal device to the base station, and may be obtained based on measurement of a pilot signal or a data signal sent by the base station. The CSI is used to determine information indicating the state of the channel, such as reference signal received power (Reference Signal Receiving Power, RSRP) of the channel, the number of transmission layers, and the like.

The communication device determines a signal-to-noise ratio value of a signal sent by the network device through the RSRP indicated by the CSI, and selects a first modulation mode set from a plurality of modulation modes supported by the terminal device based on the signal-to-noise ratio value of the signal sent by the network device.

Optionally, the communication device determines the value of the signal-to-noise ratio SINR of the signal sent by the network device by equation (7):

wherein N is _pwr The power of the interference plus noise is characterized.

In some embodiments, the implementation of selecting the first modulation scheme set from the plurality of modulation schemes according to a signal-to-noise ratio of a signal sent by the network device comprises: and selecting the first modulation mode set from the plurality of modulation modes according to the comparison of the signal-to-noise ratio of the signal and at least one target signal-to-noise ratio threshold value.

The communication device compares the value of the SINR indicated by the CSI with at least one target signal-to-noise ratio threshold value, so as to determine the relation between the value of the signal-to-noise ratio and each target signal-to-noise ratio threshold value, and selects a first modulation mode set from a plurality of modulation modes based on the relation between the value of the signal-to-noise ratio and each target signal-to-noise ratio threshold value.

Optionally, the plurality of modulation modes are divided into a plurality of candidate modulation mode sets, and the communication device selects the first modulation mode set from the plurality of candidate modulation mode sets according to the comparison of the signal-to-noise ratio of the signal and the at least one target signal-to-noise ratio threshold value.

In an example, the modulation scheme supported by the terminal device includes: the modulation modes supported by the terminal equipment are divided into the following two candidate debugging mode sets: the communication device selects the candidate modulation scheme set 2 as a first modulation scheme set based on SINR, wherein the candidate modulation scheme set 1 includes a first modulation scheme and a second modulation scheme, and the candidate modulation scheme set 2 includes a second modulation scheme, a third modulation scheme and a fourth modulation scheme.

Optionally, the at least one target snr threshold is a fixed snr threshold.

Optionally, the at least one target snr threshold has an association relationship with a first number, where the first number is the number of transmission layers indicated by the CSI.

And under the condition that the at least one target signal-to-noise ratio threshold value has an association relation with the first quantity, selecting at least one target signal-to-noise ratio threshold value used by the first modulation mode set as at least one signal-to-noise ratio threshold value corresponding to the first quantity. At this time, the communication device selects at least one signal-to-noise ratio threshold corresponding to the transmission layer number indicated by the CSI as the target signal-to-noise ratio threshold. It can be understood that the number of transmission layers of the CSI indication is the value of rank of the CSI indication.

In the number of transmission layersThe number of the corresponding SNR threshold values is 1 as an example, the rank value is 1, and the corresponding SNR threshold value is SINR ₁ The rank has a value of 2 and the corresponding SNR threshold is SINR ₂ The rank has a value of 3 and the corresponding SNR threshold value is SINR ₃ The rank has a value of 4 and the corresponding SNR threshold is SINR ₄ The method comprises the steps of carrying out a first treatment on the surface of the If the rank indicated by the CSI is 4, the target SNR threshold for selecting the first modulation mode set includes SINR ₄ 。

Taking the number of signal-to-noise ratio threshold values corresponding to the number of transmission layers as 2 as an example, the rank value is 1, and the corresponding signal-to-noise ratio threshold values comprise SINR ₁₁ Sum SINR ₁₂ And SINR ₁₁ Less than SINR ₁₂ The rank has a value of 2, and the corresponding SNR threshold includes SINR ₂₁ Sum SINR ₂₂ And SINR ₂₁ Less than SINR ₂₂ The rank has a value of 3, and the corresponding SNR threshold includes SINR ₃₁ Sum SINR ₃₂ And SINR ₃₁ Less than SINR ₃₂ The rank has a value of 4, and the corresponding SNR threshold includes SINR ₄₁ Sum SINR ₄₂ And SINR ₄₁ Less than SINR ₄₂ The method comprises the steps of carrying out a first treatment on the surface of the If the rank indicated by the CSI is 4, the target SNR threshold for selecting the first modulation mode set includes SINR ₄₁ Sum SINR ₄₂ 。

In the embodiment of the application, under the condition that the first modulation mode set is selected based on the SINR indicated by the CSI, based on the difference of the transmission layers, different signal-to-noise ratio threshold values are used for comparing with the signal-to-noise ratio corresponding to the CSI, so that the first modulation mode set is selected by using different signal-to-noise ratio threshold values based on the difference of the channel quality, and the first modulation mode set suitable for the current channel quality is selected.

Optionally, at least one target snr threshold corresponding to different transport layers is different.

The different transmission layer numbers correspond to different at least one snr threshold value may be understood as at least one snr corresponding to different transmission layers being independent of each other. And when the transmission layers indicated by the CSI are different, the target signal-to-noise ratio threshold value determined by the first equipment is different.

Taking the number of signal-to-noise ratio threshold values corresponding to the number of transmission layers as 1 as an example, the rank value is 1, and the corresponding signal-to-noise ratio threshold value is SINR ₁ The rank has a value of 2 and the corresponding SNR threshold is SINR ₂ The rank has a value of 3 and the corresponding SNR threshold value is SINR ₃ The rank has a value of 4 and the corresponding SNR threshold is SINR ₄ The method comprises the steps of carrying out a first treatment on the surface of the If the transmission layer indicated by the CSI is 1, the target signal-to-noise ratio threshold value is SINR ₁ The method comprises the steps of carrying out a first treatment on the surface of the If the transmission layer indicated by the CSI is 2, the target signal-to-noise ratio threshold value is SINR ₂ The method comprises the steps of carrying out a first treatment on the surface of the If the transmission layer indicated by the CSI is 3, the target signal-to-noise ratio threshold value is SINR ₃ The method comprises the steps of carrying out a first treatment on the surface of the If the transmission layer indicated by the CSI is 4, the target signal-to-noise ratio threshold value is SINR ₄ 。

Optionally, the more the number of transmission layers, the greater the signal-to-noise ratio threshold value at the same position in the corresponding at least one signal-to-noise ratio threshold value. The position of the signal-to-noise ratio threshold value in the at least one signal-to-noise ratio threshold value to which the signal-to-noise ratio threshold value belongs is determined based on the magnitude of each signal-to-noise ratio threshold value in the at least one signal-to-noise ratio threshold value.

Taking the number of signal-to-noise ratio threshold values corresponding to the number of transmission layers as 1 as an example, the rank value is 1, and the corresponding signal-to-noise ratio threshold value is SINR ₁ The rank has a value of 2 and the corresponding SNR threshold is SINR ₂ The rank has a value of 3 and the corresponding SNR threshold value is SINR ₃ The rank has a value of 4 and the corresponding SNR threshold is SINR ₄ The signal-to-noise ratio threshold value corresponding to each transmission layer number is ranked from big to small as follows: SINR (Signal to interference plus noise ratio) ₄ 、SINR ₃ 、SINR ₂ 、SINR ₁ 。

Taking the number of signal-to-noise ratio threshold values corresponding to the number of transmission layers as 2 as an example, the rank value is 1, and the corresponding signal-to-noise ratio threshold values comprise SINR ₁₁ Sum SINR ₁₂ And SINR ₁₁ Less than SINR ₁₂ The rank has a value of 2, and the corresponding SNR threshold includes SINR ₂₁ Sum SINR ₂₂ And SINR ₂₁ Less than SINR ₂₂ The rank has a value of 3, and the corresponding SNR threshold includes SINR ₃₁ Sum SINR ₃₂ And SINR ₃₁ Less than SINR ₃₂ The value of rank is 4, and the corresponding signal-to-noise ratio threshold value packetSINR (interference and noise ratio) ₄₁ Sum SINR ₄₂ And SINR ₄₁ Less than SINR ₄₂ The ranking of the smaller signal-to-noise ratio threshold value corresponding to each transmission layer number from large to small is as follows: SINR (Signal to interference plus noise ratio) ₄₁ 、SINR ₃₁ 、SINR ₂₁ 、SINR ₁₁ The larger signal to noise ratio threshold value corresponding to each transmission layer number is sorted from big to small as follows: SINR (Signal to interference plus noise ratio) ₄₂ 、SINR ₃₂ 、SINR ₂₂ 、SINR ₁₂ 。

In some embodiments, the selecting the first modulation scheme set from the at least two candidate modulation scheme sets according to the relation between the SINR value and at least one target signal-to-noise ratio threshold value includes: determining at least two signal-to-noise ratio ranges based on the at least one target signal-to-noise ratio threshold value; determining a target signal-to-noise ratio range to which the SINR value belongs in the at least two signal-to-noise ratio ranges; and determining the candidate modulation mode corresponding to the target signal-to-noise ratio range in at least two candidate modulation mode sets as the first modulation mode set.

The communication equipment can obtain at least two signal-to-noise ratio ranges based on at least one target signal-to-noise ratio threshold value, and different signal-to-noise ratio ranges correspond to different candidate modulation mode sets in the at least two candidate modulation mode sets. Optionally, the larger the signal-to-noise ratio is, the larger the maximum modulation order of the candidate modulation mode set corresponding to the signal-to-noise ratio range is.

The communication equipment compares the signal-to-noise ratio of the signal sent by the network equipment with at least one target signal-to-noise ratio threshold value, determines a target signal-to-noise ratio range in at least two signal-to-noise ratio ranges according to the relation between the SINR value and each target signal-to-noise ratio threshold value in the at least one target signal-to-noise ratio threshold value, and determines a candidate modulation mode set corresponding to the target signal-to-noise ratio range as a first modulation mode set. Wherein the value of the signal-to-noise ratio belongs to the target signal-to-noise ratio range.

The at least one target signal-to-noise ratio threshold value comprises: SINR (Signal to interference plus noise ratio) ₄₁ Sum SINR ₄₂ And SINR ₄₁ Less than SINR ₄₂ For example, based on SINR ₄₁ Sum SINR ₄₂ The following three signal-to-noise ratio ranges are determined: noise ratio range 1 (less than SINR) ₄₁ ) Noise ratio range 2 (SINR) ₄₁ And SINR ₄₂ Between), noise ratio range 3 (greater than SINR ₄₂ ) The noise ratio range corresponds to the candidate modulation mode set 1, the noise ratio range 2 corresponds to the candidate modulation mode set 2, and the noise ratio range 3 corresponds to the candidate modulation mode set 3; if the value of the signal to noise ratio belongs to the noise ratio range 3, that is, the value of the signal to noise ratio is larger than the SINR ₄₂ The first modulation scheme set is candidate modulation scheme set 3. It can be understood that, in the embodiment of the present application, two threshold values include two threshold values, for example: the value of the signal-to-noise ratio is at the SINR ₄₁ And SINR ₄₂ Between, it can be understood that the value of the signal-to-noise ratio belongs to [ SINR ] ₄₁ ，SINR ₄₂ ]。

In some embodiments, the at least one target snr threshold includes a first target snr threshold, the at least two candidate modulation mode sets include a first candidate modulation mode set and a second candidate modulation mode set, the first candidate modulation mode set and the second candidate modulation mode set include the same number of modulation modes, a maximum modulation order of the first candidate modulation mode set is smaller than a maximum modulation order of the second candidate modulation mode set, and a minimum modulation order of the first candidate modulation mode set is smaller than a minimum modulation order of the second candidate modulation mode set; if the value of the signal to noise ratio is smaller than the first target signal to noise ratio threshold value, the first modulation mode set is the first candidate modulation mode set; and if the value of the signal to noise ratio is greater than or equal to the first target signal to noise ratio threshold value, the first modulation mode set is the second candidate modulation mode set.

At this time, the target snr threshold included in the at least one target snr threshold is a first target snr threshold, and two snr ranges are determined based on the first target snr threshold: the method comprises the steps of being smaller than a first target signal-to-noise ratio threshold value (a first signal-to-noise ratio range) and being larger than or equal to the first target signal-to-noise ratio threshold value (a second signal-to-noise ratio range), wherein the first signal-to-noise ratio range corresponds to a first candidate modulation mode set, and the second signal-to-noise ratio range corresponds to a second candidate modulation mode set.

The number of the debugging modes included in the first candidate modulation mode set and the second candidate modulation mode set is the same, and the maximum modulation order and the minimum modulation order of the second candidate modulation mode set are respectively larger than the maximum modulation order and the minimum modulation order of the first candidate modulation mode set,

in an example, the highest modulation scheme supported by the terminal device is 256QAM, the first set of candidate modulation schemes is { QPSK,16QAM,64QAM }, and the second set of candidate modulation schemes is {16QAM,64QAM,256QAM }. It can be understood that the modulation modes supported by the terminal device include a highest modulation mode supported by the terminal and all modulation modes lower than the highest supported modulation mode.

The communication equipment compares the SINR value of the signal sent by the network equipment with a first target signal-to-noise ratio threshold value, if the SINR value is smaller than the first target signal-to-noise ratio threshold value, namely, the target signal-to-noise ratio range is the first signal-to-noise ratio range, the first modulation mode set is a first candidate modulation mode set, and if the SINR value is larger than or equal to the first target signal-to-noise ratio threshold value, namely, the target signal-to-noise ratio range is the second signal-to-noise ratio range, the first modulation mode set is a second candidate modulation mode set.

The wireless communication method provided by the embodiment of the application uses the signal-to-noise ratio of the signal sent by the network equipment to judge the range of the current channel quality in advance, and selects the first modulation mode set based on the range of the channel quality, wherein when the channel quality is better, the candidate modulation mode set corresponding to the high-order modulation mode, namely the modulation mode with large modulation order is selected, and when the channel quality is worse, the candidate modulation mode set corresponding to the low-order modulation mode, namely the modulation mode with small modulation order is selected, so that the modulation mode matched with the channel quality is selected based on the channel quality, and the channel transmission efficiency is improved.

For mode two

The second CQI is the previous CQI corresponding to the terminal device, that is, the CQI closest to the current time among the historical CQI values calculated by the communication device. The value of the second CQI may be understood as the CQI level of the second CQI.

In some embodiments, the second implementation of selecting the first modulation scheme set from the plurality of modulation schemes according to the second CQI includes: and selecting the first modulation mode set from a plurality of modulation modes according to the relation between the second CQI and at least one CQI threshold value.

Optionally, the plurality of modulation modes are divided into a plurality of candidate modulation mode sets, and the communication device selects the first modulation mode set from the plurality of candidate modulation mode sets according to the comparison of the second CQI and the at least one target signal-to-noise ratio threshold value.

The communication device compares the second CQI value with at least one CQI threshold value to determine a relationship of the second CQI value to each CQI threshold value, and selects the first set of modulation schemes from the at least two sets of candidate modulation schemes based on the relationship of the second CQI value to each CQI threshold value.

Optionally, the at least one CQI threshold is a fixed CQI threshold that is set.

Optionally, at least one CQI threshold value is determined for the amount of change in the value of the adjacent two CQIs in the historical CQI.

In an example, the CQI has a value ranging from 1 to 15, and the change amount of the CQI values reported in two adjacent times does not exceed 5, and the at least one CQI threshold includes: 6 and 10.

In some embodiments, the selecting the first modulation scheme set from the at least two candidate modulation scheme sets according to the relationship between the value of the second CQI and at least one CQI threshold value includes: determining at least two CQI ranges based on the at least one CQI threshold value; determining a target CQI range to which the value of the second CQI in the at least two CQI ranges belongs; and determining a candidate modulation mode corresponding to the target CQI range in at least two candidate modulation mode sets as the first modulation mode set.

The communication device can obtain at least two CQI value ranges based on at least one CQI threshold value, and different CQI value ranges correspond to different candidate modulation mode sets in at least two candidate modulation mode sets.

The communication equipment compares the second CQI value with at least one CQI threshold value, determines a target CQI value range to which the second CQI belongs in at least two CQI value ranges according to the relation between the second CQI value and each CQI threshold value in the at least one CQI threshold value, and determines a candidate modulation mode set corresponding to the target CQI value range as a first modulation mode set.

In an example, the at least one CQI threshold value comprises: CQI (channel quality indicator) ₁ Based on CQI ₁ The following two CQI value ranges are determined: CQI value range 1 (smaller than CQI) ₁ ) CQI value range 2 (greater than or equal to CQI ₁ ) And the CQI value range 1 corresponds to the candidate modulation mode set 1, and the CQI value range 2 corresponds to the candidate modulation mode set 2, if the second CQI value belongs to the CQI value range 2, that is, the second CQI value is larger than or equal to the CQI ₁ The first modulation scheme set is candidate modulation scheme set 2.

In an example, the at least one CQI threshold value comprises: CQI (channel quality indicator) ₁ And CQI ₂ Based on CQI ₁ And CQI ₂ The following three CQI value ranges are determined: CQI value range 1 (smaller than CQI) ₁ ) CQI value range 2 (CQI) ₁ And CQI ₂ Between), CQI value range 3 (greater than or equal to CQI ₂ ) And the CQI value range 1 corresponds to the candidate modulation mode set 1, the CQI value range 2 corresponds to the candidate modulation mode set 2, the CQI value range 3 corresponds to the candidate modulation mode set 3, if the second CQI value belongs to the CQI value range 2, namely the second CQI value is positioned in the CQI ₁ And CQI ₂ The first modulation scheme set is the candidate modulation scheme set 2.

In some embodiments, the at least one CQI threshold value comprises: the first CQI threshold value is smaller than the second CQI threshold value, the at least two candidate modulation mode sets comprise a third candidate modulation mode set and a fourth candidate modulation mode set, the number of modulation modes included in the third candidate modulation mode set is the same as that of modulation modes included in the fourth candidate modulation mode set, the maximum modulation order of the third candidate modulation mode set is smaller than that of the fourth candidate modulation mode set, and the minimum modulation order of the third candidate modulation mode set is smaller than that of the fourth candidate modulation mode set; if the second CQI value is smaller than the first CQI threshold value, the first modulation mode set is the third candidate modulation mode set; if the second CQI value is between the first CQI threshold value and the second CQI threshold value, the first modulation mode set is the last selected first modulation mode set; and if the second CQI value is greater than the second CQI threshold value, the first modulation mode set is the fourth candidate modulation mode set.

At this time, the communication device determines two CQI value ranges based on the first CQI threshold value and the second CQI threshold value: the method is smaller than a first CQI threshold value (a first CQI value range), between the first CQI threshold value and a second CQI threshold value (a second CQI value range), and larger than a second CQI threshold value (a third CQI value range), wherein the first CQI value range corresponds to a third candidate modulation mode set, the candidate modulation mode set corresponding to the second CQI value range is the same as the first modulation mode set selected last time, and the third CQI value range corresponds to a fourth candidate modulation mode set. It can be appreciated that the first modulation scheme set selected last by the communication device is a modulation scheme set used for calculating the first CQI from the at least two candidate modulation scheme sets.

Optionally, when the CQI is in the range of 1 to 15, the first CQI threshold is 5, and the second CQI threshold is 10.

According to the wireless communication method provided by the embodiment of the application, the modulation mode possibly adopted by the current channel is judged in advance by utilizing the CQI value calculated last time, and the calculation of the CQI value is carried out based on the judged modulation mode possibly adopted by the current channel, so that the complexity of CQI calculation is reduced on the basis of not losing the channel performance.

In the embodiment of the present application, the communication device may support one or both of the signal-to-noise ratio of the signal sent by the network device and the second CQI to perform the selection of the first modulation scheme set.

In some embodiments, the manner in which the communication device selects the first modulation scheme set from the plurality of modulation schemes supported by the terminal device according to the reference channel information in S601 may further include at least one of the following:

a third mode is that a second modulation mode set is selected from the plurality of modulation modes according to the signal-to-noise ratio of the signal sent by the network equipment; and selecting the first modulation scheme set from modulation schemes included in the second modulation scheme set according to the second CQI.

A fourth mode, selecting a second modulation mode set from the plurality of modulation modes according to a second CQI; and selecting the first modulation mode set from the modulation modes included in the second modulation mode set according to the signal-to-noise ratio of the signal sent by the network equipment.

In the third mode, the communication device selects the second modulation mode set from the modulation modes supported by the terminal device based on the signal-to-noise ratio of the signal sent by the network device, and then selects the first modulation mode set from the second modulation mode set based on the second CQI.

It can be understood that, the communication device selects the selection method of the second modulation mode set from the plurality of modulation modes supported by the terminal device based on the signal-to-noise ratio of the signal sent by the network device, and the selection method of the first modulation mode set from the plurality of modulation modes supported by the terminal device based on the signal-to-noise ratio of the signal sent by the network device in the same manner is different from the first modulation mode set, which is not described in detail herein, and the difference between the two methods is that: in the third mode, the selected modulation scheme set is referred to as a second modulation scheme set, and the modulation scheme set selected in the first mode is referred to as a first modulation scheme set.

It can be understood that, in the same manner as the selection method for selecting the first modulation scheme set from the modulation schemes included in the second modulation scheme set based on the second CQI, the communication device selects the first modulation scheme set from the multiple modulation schemes supported by the terminal device based on the second CQI, which is not described herein.

In the fourth mode, the communication device selects the second modulation mode set from the modulation modes supported by the terminal device based on the second CQI, and then selects the first modulation mode set from the second modulation mode set based on the signal-to-noise ratio of the signal sent by the network device.

It can be understood that, the method for selecting the second modulation mode set from the modulation modes supported by the terminal device by the second CQI of the communication device, and the method for selecting the first modulation mode set from the modulation modes supported by the terminal device by the communication device based on the second CQI in the second mode are different from each other, and are not described in detail herein: in the fourth mode, the selected modulation scheme set is referred to as a second modulation scheme set, and the modulation scheme set selected in the second mode is referred to as a first modulation scheme set.

It can be understood that, the selection method of the communication device for selecting the first modulation mode set from the modulation modes included in the second modulation mode set based on the signal-to-noise ratio of the signal sent by the network device is the same as the selection method of the first modulation mode set from the modulation modes supported by the terminal device based on the signal-to-noise ratio SINR indicated by CSI in the first mode, which is not described herein again.

In some embodiments, as shown in fig. 7, S602 the selecting a target modulation scheme from the first modulation scheme set includes:

s6021, the communication equipment calculates mutual information of a first modulation mode in the first modulation mode set and mutual information of a second modulation mode in the first modulation mode set;

And S6022, the communication equipment determines the second modulation mode as the target modulation mode based on the mutual information of the second modulation mode which is determined to be larger than the mutual information of the first modulation mode.

The second modulation scheme is any modulation scheme in the first modulation scheme set, and the first modulation scheme is any modulation scheme except the second modulation scheme set in the first modulation scheme set. For the second modulation scheme, when the mutual information of the second modulation scheme is larger than the mutual information of other modulation schemes in the first modulation scheme set, the second modulation scheme is the target modulation scheme.

The communication device may traverse all modulation schemes in the first modulation scheme set, determine an MI corresponding to each modulation scheme according to the value of the equivalent signal-to-noise ratio or the value of the capacity, and select a value of the largest MI from the values of the MI corresponding to all the modulation schemes as a final value of the MI, where the communication device determines the modulation scheme corresponding to the final value of the MI as the target modulation scheme.

In the embodiment of the application, the final MI valueCan be expressed as formula (6):

wherein, the liquid crystal display device comprises a liquid crystal display device,in practical application, when the channel includes a plurality of transmission layers, the first CQI corresponding to each transmission layer is calculated independently, that is, the corresponding MI of each first transmission layer is calculated independently. In the case where the channel includes 1 transport layer, the value of l is only 1, or l is ignored.

In the wireless communication method provided by the embodiment of the application, when mapping the value of MI, the communication device only traverses each modulation mode in the first modulation mode set, and for the modulation modes other than the first modulation mode set in the modulation modes supported by the terminal device, the value of the MI of the modulation mode does not need to be determined, so that the number of the modulation modes needing to be traversed is reduced, and the selection of the value of the final MI is performed from a smaller selection range for determining the value of the final MI shown in fig. 5, so that the calculation efficiency of the CQI is improved, and the calculation complexity of the CQI is reduced.

In some embodiments, the calculating, in S6021, the MI corresponding to each first modulation scheme in the first modulation scheme set includes: for each first modulation scheme in the first modulation scheme set, performing the following processing: acquiring mutual information of each sample value point in the first modulation mode; and superposing the mutual information of the sample points to obtain the mutual information corresponding to the first modulation mode.

For a first modulation scheme, the calculation of the value of MI corresponding to the first modulation scheme may be implemented by equation (5):

in the embodiment of the present application, the MI of the sample point is understood as the MI of the sample point on the transport layer l and the MI of the transport layer l.

In some embodiments, obtaining mutual information of each sample point in the first modulation mode includes: for each sample point, the following processing is performed:

acquiring the equivalent signal-to-noise ratio or capacity of the sample value point; and mapping the equivalent signal-to-noise ratio or the capacity to the mutual information of the sample value points in the first modulation mode.

Here, the equivalent signal-to-noise ratio of a sample point can be mapped to MI of the sample point in the first modulation mode by equation (3):

here, the capacity of a sample point can be mapped to MI of the sample point in the first modulation mode by equation (4):

in the embodiment of the application, the communication equipment can be used for carrying out the communication according to the equivalent channel state information H _eq,i And calculating the value or capacity of the equivalent signal-to-noise ratio corresponding to the MMSE detection or the SD detection.

In some embodiments, S603 generates a first channel quality indication based on mutual information corresponding to the target modulation scheme, including: and determining the channel quality indication corresponding to the value of the mutual information of the target modulation mode as the first channel quality indication in the mapping of the mutual information to the channel quality indication.

In some embodiments, the communication device further performs the following: and updating the reference channel information with the first channel quality indication.

After the communication device obtains the first CQI, the second CQI in the reference channel information may be updated based on the first CQI to calculate a next first CQI based on the current first CQI.

In some embodiments, the communication device further performs the steps of: the first channel quality indication is sent to a network device such that the network device schedules spectrum resources based on the first channel quality indication.

At this time, the communication device is a terminal device, the first CQI belongs to a downlink CQI, after the terminal device obtains the first CQI, the first CQI is reported to the network device, and the network device schedules a frequency domain resource for the terminal device according to the value of the first CQI reported by the terminal device.

In some embodiments, the communication device further performs the steps of: and scheduling spectrum resources based on the first channel quality indication.

At this time, the first CQI belongs to an uplink CQI, the communication device is a network device, and the network device schedules a frequency domain resource for the terminal device based on the calculated value of the first CQI.

In practical applications, the network device may also select a modulation coding scheme for the terminal device based on the value of the first CQI.

Taking communication equipment as network equipment as an example, the network equipment performs SRS measurement to obtain an equivalent signal-to-noise ratio, calculates the value of uplink CQI based on the equivalent signal-to-noise ratio, and selects frequency domain resources for the terminal equipment based on the calculated value of the uplink CQI.

The wireless communication method provided by the embodiment of the application can be applied to a scene that the base station calculates the value of the uplink CQI, and can also be applied to a scene that the terminal equipment calculates the value of the downlink CQI, so that the mode of calculating the value of the CQI provided by the embodiment of the application can be applied to a plurality of different communication scenes, and the complexity of calculating the CQI under each communication scene can be reduced.

The wireless communication method provided by the embodiment of the application is further described below.

In the wireless communication method provided by the embodiment of the application, not all modulation modes are mapped, but the candidate modulation mode set, namely the candidate modulation mode set, is selected according to the prior information of the channel, for example, when the signal-to-noise ratio is high, the mapping is performed for a high-order modulation mode, when the signal-to-noise ratio is low, the mapping is performed for a low-order modulation mode, or the number of modulation modes in a proper candidate modulation mode set is reduced according to CQI information reported by UE historically, so that the implementation complexity is reduced.

As shown in fig. 8,

s801, a first modulation scheme set is selected from a plurality of candidate modulation scheme sets.

Wherein the plurality of candidate modulation scheme sets are divided by modulation schemes supported by the terminal device.

S802, calculating the value of the equivalent signal to noise ratio or the value of the capacity according to the equivalent channel state information.

S803, traversing the modulation modes in the first modulation mode set, and determining the MI value corresponding to each modulation mode in the first modulation mode set according to the value of the equivalent signal-to-noise ratio or the value of the capacity.

S804, selecting the value of the largest MI from the values of the MI corresponding to the modulation schemes in the first modulation scheme set as the final value of the MI.

And S805, obtaining a corresponding CQI value according to the MI value and the MI-to-CQI table.

The wireless communication method shown in fig. 8 may be implemented in a terminal device or a base station.

The wireless communication method shown in fig. 8 increases S801 to select the first modulation scheme set before the wireless communication method shown in fig. 3 calculates the CQI value. In S801, a selection process of a candidate modulation scheme may be performed according to channel state information or CQI information reported in history. Before determining the values of MI corresponding to all the random modes according to the values of the equivalent signal-to-noise ratio and the values of the capacity, in the wireless communication method shown in fig. 8, only the modulation modes in the candidate modulation mode set need to be traversed, and all the modulation modes do not need to be traversed for S302 and S303. Thus reducing the complexity of CQI calculation.

The wireless communication method provided by the embodiment of the application can be implemented and is not limited to the following embodiments:

embodiment one, a candidate modulation scheme set for selecting a modulation scheme according to channel state information

The modulation schemes are divided into two sets. Taking the UE supporting 256QAM modulation as an example, the candidate modulation schemes are divided into two sets, a low modulation scheme set { QPSK,16QAM,64QAM }, a high modulation scheme set {16QAM,64QAM,256QAM }.

As shown in fig. 9, the step of selecting the candidate modulation scheme set by the terminal device includes:

s901, the terminal equipment calculates the equivalent SINR value corresponding to the current channel state information.

Here, the value of the equivalent SINR corresponding to the current channel state information may be calculated by equation (7):

wherein RSRP represents the power of the signal; n (N) _pwr The power of the interference plus noise is characterized.

S902, the terminal equipment determines a first modulation mode set based on the equivalent SINR value.

If rank=1 reported by UE, when SINR > SINR ₁ The first modulation mode set is selected as a high-order modulation mode set, otherwise, the first modulation mode set is selected as a low-order modulation mode set; if rank=2 reported by UE, when SINR > SINR ₂ The first modulation mode set is selected as a high-order modulation mode set, otherwise, the first modulation mode set is selected as a low-order modulation mode set; if rank=3 reported by UE, when SINR > SINR ₃ The first modulation mode set is selected as a high-order modulation mode set, otherwise, the first modulation mode set is selected as a low-order modulation mode set; if rank=4 reported by UE, when SINR > SINR ₄ The first modulation mode set is selected as a high-order modulation mode set, otherwise, the first modulation mode set is selected as a low-order modulation mode set.

In the first embodiment, the range of the current channel quality can be determined in advance by using the prior information of the channel, such as the signal to noise ratio, when the channel quality is better, the candidate modulation mode set of the high-order modulation mode is selected, and when the channel quality is worse, the candidate modulation mode set of the low-order modulation mode is selected.

The second embodiment selects a candidate modulation mode set of the modulation modes according to the CQI information reported historically;

according to the CQI class table we can get the actual modulation scheme class, and assume that the channel variation is within 10dB during two reports, so that the CQI value reported twice will not exceed 5 classes (this assumption can be considered to be basically satisfied during periodic reporting), for example, when the CQI value reported historically < CQI6, then a set of modulation scheme candidates of low order may be selected, when the CQI value reported historically > CQI10, then a set of modulation scheme candidates of high order may be selected, and when the CQI value reported historically is between [6,10], then the same set of modulation scheme candidates as reported last time may be selected. The relationship between the value of CQI and CQI level may be as shown in the representation 1.

Table 1, CQI values and CQI level examples

In the second embodiment, the characteristics of the historical CQI report value and the channel variation are utilized to pre-determine the possible modulation mode adopted by the current channel, and a suitable candidate modulation mode set is selected, so that the implementation complexity is reduced on the basis of no performance loss.

In the above embodiment, the wireless communication method provided in the embodiment of the present application is described by taking, as an example, selecting the first modulation scheme set, that is, the target modulation scheme set, from 2 candidate modulation scheme sets, and may be extended to selecting the first modulation scheme set from 3 or more candidate modulation scheme sets, where only more thresholds need to be added to flexibly implement the method.

The above embodiment is applied to the terminal device side, and in practical application, the wireless communication method provided by the embodiment of the application can also be applied to the base station.

According to the wireless communication method provided by the embodiment of the application, the channel state information or the priori information of the historical reported CQI is utilized to predict the value of the reported CQI, all modulation modes do not need to be traversed in the implementation process, only the modulation modes in the candidate modulation mode set need to be traversed, and meanwhile, some priori information of the channel is utilized, so that the implementation complexity can be effectively reduced on the basis of not losing the performance. For example, for a UE supporting 256QAM modulation, 4 traversals are needed in the prior art, and when the technical scheme is adopted, only 3 traversals are needed, so that the complexity is reduced by 25%.

The wireless communication apparatus according to the embodiment of the present application is applied to a communication device, as shown in fig. 10, an apparatus 1000 includes:

a first selection module 1001 configured to select a first modulation scheme set from a plurality of modulation schemes supported by a terminal device according to reference channel information;

a second selection module 1002 configured to select a target modulation scheme from the first set of modulation schemes;

and a generating module 1003 configured to generate a first channel quality indication based on mutual information corresponding to the target modulation scheme.

In some embodiments, the first selection module 1001 is further configured to:

and selecting a first modulation mode set from the plurality of modulation modes according to the signal-to-noise ratio of the signal sent by the network equipment.

In some embodiments, the first selection module 1001 is further configured to:

and selecting the first modulation mode set from the plurality of modulation modes according to the relation between the SINR value and at least one target signal-to-noise ratio threshold value.

In some embodiments, the at least one target snr threshold has an association with a first number, the first number being a number of transmission layers indicated by the channel state information.

In some embodiments, the first selection module 1001 is further configured to:

And selecting the first modulation mode set from the plurality of modulation modes according to the second channel quality indication.

In some embodiments, the second selection module 1002 is further configured to:

calculating mutual information of a first modulation mode in the first modulation mode set and mutual information of a second modulation mode in the first modulation mode set;

and determining the second modulation mode as the target modulation mode based on the mutual information of the second modulation mode larger than the mutual information of the first modulation mode.

In some embodiments, the second selection module 1002 is further configured to:

for each first modulation scheme in the first modulation scheme set, performing the following processing:

acquiring mutual information of each sample value point in the first modulation mode;

and superposing the mutual information of the sample points to obtain the mutual information corresponding to the first modulation mode.

In some embodiments, the second selection module 1002 is further configured to:

for each sample point, acquiring the equivalent signal-to-noise ratio or capacity of the sample point;

and mapping the signal-to-noise ratio or the capacity to the mutual information of the sample points in the first modulation mode for each sample point.

In some embodiments, the generation module 1003 is further configured to:

and determining the channel quality indication corresponding to the value of the mutual information of the target modulation mode as the first channel quality indication in the mapping of the mutual information to the channel quality indication.

In some embodiments, the apparatus 1000 further comprises: an update module configured to:

and updating the reference channel information with the first channel quality indication.

In some embodiments, the first selection module 1001 is further configured to:

selecting a second modulation mode set from the plurality of modulation modes according to the signal-to-noise ratio of the signal sent by the network equipment;

and selecting the first modulation mode set from modulation modes included in the second modulation mode set according to a second channel quality indication.

In some embodiments, the first selection module 1001 is further configured to:

selecting a second modulation mode set from the plurality of modulation modes according to a second channel quality indication;

and selecting the first modulation mode set from the modulation modes included in the second modulation mode set according to the signal-to-noise ratio of the signal sent by the network equipment.

In some embodiments, the apparatus 1000 further comprises: and the sending module is configured to send the first channel quality indication to a network device, so that the network device schedules spectrum resources based on the first channel quality indication.

In some embodiments, the apparatus 1000 further comprises: a scheduling module configured to schedule spectrum resources based on the first channel quality indication.

It should be understood by those skilled in the art that the above description of the wireless communication apparatus according to the embodiment of the present application may be understood with reference to the description of the wireless communication method according to the embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device 1100 according to an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 1100 shown in fig. 11 includes a processor 1110, the processor 1110 being configured to:

selecting a target modulation mode from the first modulation mode set;

and generating a first channel quality indicator CQI based on the mutual information corresponding to the target modulation mode.

In an embodiment of the present application, the processor 1110 may call and run a computer program from the memory to implement the wireless communication method in the embodiment of the present application.

Optionally, as shown in fig. 11, the communication device 1100 may also include a memory 1120. Wherein the processor 1110 may call and run a computer program from the memory 1120 to implement the wireless communication method in the embodiment of the present application.

Wherein the memory 1120 may be a separate device from the processor 1110 or may be integrated into the processor 1110.

Optionally, as shown in fig. 11, the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 1130 may include, among other things, a transmitter and a receiver. Transceiver 1130 may further include antennas, the number of which may be one or more.

Optionally, the communication device 1100 may implement a corresponding flow implemented by the communication device in each method of the embodiments of the present application, which is not described herein for brevity. Alternatively, the communication device 1100 may be a terminal device or a network device.

Fig. 12 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1200 shown in fig. 12 includes a processor 1210, and the processor 1210 may call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

Optionally, as shown in fig. 12, the chip 1200 may further include a memory 3320. Wherein the processor 1210 may call and run computer programs from the memory 1220 to implement the methods of embodiments of the present application.

The memory 1220 may be a separate device from the processor 1210, or may be integrated into the processor 1210.

Optionally, the chip 1200 may also include an input interface 1230. Wherein the processor 1210 may control the input interface 1230 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 1200 may further include an output interface 1240. Wherein processor 1210 may control the output interface 1240 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

Optionally, the chip may be applied to the communication device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the communication device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in fig. 13, the communication system 1300 includes a terminal device 1310 and a network device 1320.

The terminal device 1310 or the network device 1320 may be configured to implement the corresponding functions implemented by the communication device in the above method, which is not described herein.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to the communication device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the communication device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a communication device in the embodiment of the present application, and the computer program instructions cause a computer to execute a corresponding flow implemented by the communication device in each method in the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the communication device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the communication device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only memory (ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising:

selecting a first modulation mode set from a plurality of modulation modes supported by terminal equipment according to reference channel information, wherein the reference channel information comprises one or more of signal-to-noise ratio of a signal sent by network equipment and second channel quality indication, and the second channel quality indication is a previous channel quality indication corresponding to the terminal equipment;

selecting a target modulation mode from the first modulation mode set;

2. The method according to claim 1, wherein the method further comprises:

and selecting the first modulation mode set from the plurality of modulation modes according to the signal-to-noise ratio of the signal sent by the network equipment.

3. The method according to claim 2, wherein the method further comprises:

and selecting the first modulation mode set from the plurality of modulation modes according to the comparison of the signal-to-noise ratio of the signal and at least one target signal-to-noise ratio threshold value.

4. The method of claim 3, wherein the at least one target snr threshold has an association with a first number of transport layers indicated by channel state information.

5. The method according to claim 1, wherein the method further comprises:

6. The method according to claim 1, wherein the method further comprises:

7. The method according to claim 6, wherein the method further comprises:

8. The method of claim 7, wherein the method further comprises:

for each sample point, the following processing is performed:

Acquiring the equivalent signal-to-noise ratio or capacity of the sample value point;

and mapping the signal-to-noise ratio or the capacity into mutual information of the sample points in the first modulation mode.

9. The method according to claim 1, wherein the method further comprises:

and determining the channel quality indication corresponding to the value of the mutual information of the target modulation mode in the mapping of the mutual information to the channel quality indication as the first channel quality indication.

10. The method according to claim 1, wherein the method further comprises:

11. The method according to claim 1, wherein the method further comprises:

and selecting the first modulation mode set from the modulation modes included in the second modulation mode set according to the second channel quality indication.

12. The method according to claim 1, wherein the method further comprises:

selecting a second modulation mode set from the plurality of modulation modes according to the second channel quality indication;

13. The method according to any one of claims 1 to 12, further comprising:

the first channel quality indication is sent to a network device such that the network device schedules spectrum resources based on the first channel quality indication.

14. The method according to any one of claims 1 to 12, further comprising:

and scheduling spectrum resources based on the first channel quality indication.

15. A communication device comprising a processor, wherein the processor is configured to:

selecting a target modulation mode from the first modulation mode set;

16. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the wireless communication method according to any of claims 1 to 14 when the computer program is executed.

17. A storage medium storing an executable program which, when executed by a processor, implements the wireless communication method of any one of claims 1 to 14.

18. A chip, comprising: processor, characterized by a memory for calling and running a computer program to cause a device on which the chip is installed to perform the wireless communication method according to any of claims 1 to 14.