CN115333691A

CN115333691A - Information transmission method and device

Info

Publication number: CN115333691A
Application number: CN202110507483.4A
Authority: CN
Inventors: 司倩倩; 高秋彬; 高雪娟; 邢艳萍
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-11-11

Abstract

The application discloses an information transmission method and an information transmission device, which are used for realizing the transmission of MCS or CQI grade adjustment indication information based on the state of hybrid automatic repeat request acknowledgement information and improving the transmission performance. On a terminal side, the information transmission method provided by the application comprises the following steps: determining the state of hybrid automatic repeat request acknowledgement information needing to be fed back; and determining and reporting the level adjustment indication information of specific information based on the state of the hybrid automatic repeat request acknowledgement information, wherein the specific information comprises a modulation and coding level (MCS) or Channel Quality Information (CQI).

Description

Information transmission method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background

In a fifth generation New wireless (NR) system, a Low-delay and Low Latency Communication (URLLC) service is supported, the target block error rate of the service is usually very Low and needs to reach 10^ 5, under the condition, the probability of wrong reception is very Low, and the time of several minutes or days may be needed, and at the moment, the environment and the condition of a wireless channel may have changed for many times, so the function of outer loop link self-adaptation adjustment is no longer effective.

Disclosure of Invention

The embodiment of the application provides an information transmission method and an information transmission device, which are used for realizing the transmission of MCS or CQI grade adjustment indication information and improving the transmission performance based on the state of hybrid automatic repeat request acknowledgement information.

On a terminal side, an information transmission method provided in an embodiment of the present application includes:

determining the state of hybrid automatic repeat request acknowledgement information needing to be fed back;

and determining and reporting the level adjustment indication information of specific information based on the state of the hybrid automatic repeat request acknowledgement information, wherein the specific information comprises a modulation and coding level (MCS) or Channel Quality Information (CQI).

By the method, the grade adjustment indicating information of the specific information is determined and reported based on the state of the hybrid automatic repeat request acknowledgement information, wherein the specific information comprises modulation coding grade MCS or channel quality information CQI, so that the bit number of the MCS or CQI grade adjustment indicating information can be reduced, or more MCS or CQI adjustment states can be distinguished under the condition that the bit number of the MCS or CQI grade adjustment indicating information is not changed, the change condition of a channel is better indicated, and the transmission performance is improved.

Optionally, determining and reporting the level adjustment indication information of the specific information based on the state of the harq acknowledgement information specifically includes:

determining a corresponding relation between the grade adjustment indication information of the reported specific information and the adjustment state of the specific information based on the state of the hybrid automatic repeat request acknowledgement information; reporting the grade adjustment indication information of the specific information according to the determined corresponding relation;

or, in the second mode, the bit number of the level adjustment indication information of the reported specific information is determined based on the state of the harq acknowledgement information, and the level adjustment indication information of the specific information is determined and reported according to the bit number.

Optionally, the correspondence is predefined, or the network side is configured to the terminal through a high layer signaling.

Optionally, in the second mode, the bit number of the grade adjustment indication information of the reported specific information corresponding to the state of the harq acknowledgement information is determined according to a predefined mode or a mode configured by a high-level signaling at a network side.

Optionally, the status of the harq acknowledgement information includes an ACK status or a NACK status.

Optionally, the adjustment state of the MCS is an offset value between a level of the MCS expected by the terminal and a level of the MCS corresponding to the PDSCH scheduled by the base station;

the adjustment state of the CQI is an offset value between the CQI grade adjusted by the terminal and the CQI grade reported by the terminal.

Alternatively, if the MCS adjustment state is an offset value between a level of an MCS expected by the terminal and a level of specific information corresponding to a plurality of PDSCHs scheduled by the base station, the state of the harq acknowledgment information is determined by one of the following methods:

determining the state of hybrid automatic repeat request acknowledgement information corresponding to the last PDSCH in the plurality of PDSCHs as the state of the hybrid automatic repeat request acknowledgement information;

determining that the state of the hybrid automatic repeat request acknowledgement information is ACK if the number of PDSCHs in which the state of the corresponding hybrid automatic repeat request acknowledgement information in the PDSCHs is ACK is large; and if the number of the PDSCHs of which the states of the corresponding hybrid automatic repeat request acknowledgement information in the plurality of PDSCHs are negative NACKs is large, determining that the state of the hybrid automatic repeat request acknowledgement information is NACK.

On a network side, an information transmission method provided in an embodiment of the present application includes:

the receiving terminal determines and reports the grade adjustment indication information of the specific information based on the state of the hybrid automatic repeat request acknowledgement information;

according to the grade adjustment indication information of the specific information, carrying out grade adjustment on the specific information; wherein the specific information comprises a modulation and coding level MCS or channel quality information CQI.

On a terminal side, an information transmission apparatus provided in an embodiment of the present application includes:

a memory for storing program instructions;

a processor for calling the program instructions stored in the memory and executing according to the obtained program:

and determining and reporting level adjustment indication information of specific information based on the state of the hybrid automatic repeat request acknowledgement information, wherein the specific information comprises a modulation coding level (MCS) or Channel Quality Information (CQI).

the adjustment state of the CQI is an offset value between the grade of the CQI adjusted by the terminal and the grade of the CQI reported by the terminal.

Alternatively, if the MCS adjustment state is an offset value between a level of an MCS expected by the terminal and a level of specific information corresponding to a plurality of PDSCHs scheduled by the base station, the state of the harq acknowledgement information for determining the adjustment state of the specific information is determined by one of the following methods:

determining the state of hybrid automatic repeat request acknowledgement information corresponding to the last PDSCH in the PDSCHs as the state of the hybrid automatic repeat request acknowledgement information in a first mode;

determining that the state of the hybrid automatic repeat request acknowledgement information is ACK if the number of PDSCHs in which the state of the corresponding hybrid automatic repeat request acknowledgement information in the plurality of PDSCHs is ACK is large; and if the number of the PDSCHs of which the states of the corresponding hybrid automatic repeat request acknowledgement information in the plurality of PDSCHs are negative NACKs is large, determining that the state of the hybrid automatic repeat request acknowledgement information is NACK.

On the network side, an information transmission apparatus provided in an embodiment of the present application includes:

a memory for storing program instructions;

On the terminal side, another information transmission apparatus provided in the embodiment of the present application includes:

a determining unit, configured to determine a state of hybrid automatic repeat request acknowledgement information that needs to be fed back;

and a reporting unit, configured to determine and report level adjustment indication information of specific information based on a state of the harq acknowledgement information, where the specific information includes a modulation and coding level (MCS) or a Channel Quality Information (CQI).

On the network side, another information transmission apparatus provided in the embodiment of the present application includes:

a receiving unit, configured to receive level adjustment indication information of specific information determined and reported by a terminal based on a state of hybrid automatic repeat request acknowledgement information;

an adjusting unit configured to perform level adjustment on the specific information according to level adjustment instruction information of the specific information; wherein the specific information comprises a modulation and coding level MCS or channel quality information CQI.

Another embodiment of the present application provides a computing device, which includes a memory and a processor, wherein the memory is used for storing program instructions, and the processor is used for calling the program instructions stored in the memory and executing any one of the above methods according to the obtained program.

Another embodiment of the present application provides a computer storage medium having stored thereon computer-executable instructions for causing a computer to perform any one of the methods described above.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating that when a terminal receives a PDSCH transmission in a time slot n, corresponding HARQ-ACK feedback information and MCS level adjustment indication information are both transmitted in a time slot n +2 according to an embodiment of the present application;

fig. 2 is a schematic diagram illustrating that when a terminal receives a PDSCH transmission in a time slot n, corresponding HARQ-ACK feedback information is transmitted in a time slot n +2, and corresponding MCS level adjustment indication information is transmitted in a time slot n +3 according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating that a terminal receives a PDSCH transmission in a time slot n/n +1/n +2, and corresponding HARQ-ACK feedback information and MCS level adjustment indication information are transmitted in the time slot n +3 according to an embodiment of the present application;

fig. 4 is a flowchart illustrating an information transmission method at a terminal side according to an embodiment of the present application;

fig. 5 is a schematic flowchart of an information transmission method at a network side according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an information transmission apparatus at a terminal side according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an information transmission apparatus on a network side according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another information transmission apparatus at a terminal side according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another information transmission apparatus on a network side according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the NR system, a terminal reports Channel State Information (CSI) for assisting a base station to perform link adaptive scheduling more accurately. Since the base station cannot know the Channel state of the downlink, the terminal needs to report the Channel state Information to the base station through measurement, where the Channel state Information CSI includes Channel Quality Information (CQI), a Precoding Matrix Indicator (PMI) and a Rank Indicator (RI), where RI is Information of a Channel Rank and tells the base station the optimal number of layers for current downlink transmission. The PMI is a precoding matrix, and tells a base station about an optimal precoding matrix transmitted by a current Physical Downlink Shared Channel (PDSCH) through the PMI. The CQI is channel quality information, the terminal quantifies the channel condition into different CQI levels 0 to 15, and reports the CQI to the base station based on the reception condition of the channel, which means that after the proposed RI and PMI are adopted, in order to ensure that the error rate of downlink PDSCH reception does not exceed a target threshold, the highest available Modulation and Coding Scheme, that is, the value of the CQI will affect the value of the downlink Modulation and Coding Scheme (MCS).

Typically, the base station uses an Outer Loop Link Adaptation (OLLA) technique to assist Link adaptation to meet a target Block Error Rate (BLER), where Hybrid Automatic Repeat request-acknowledgement (HARQ-ACK) or Negative Acknowledgement (NACK) feedback may be used to guide OLLA. That is, when the terminal feeds back ACK, the base station may increase the MCS level to transmit more data, and when the terminal feeds back NACK, indicating that a problem occurs in the channel, the base station may decrease the MCS level to ensure reliability of data transmission.

In the prior art, aiming at the requirement of lower BLER of URLLC service, the function of outer loop link adaptive adjustment is no longer effective, and the CSI report needs to be considered to be enhanced to support better link adaptive adjustment. One possible enhancement scheme is that the terminal reports the offset value of the MCS or CQI, but there is no specific scheme yet how to report.

Therefore, the embodiments of the present application provide an information transmission method and apparatus, so as to distinguish the bit number of the MCS or CQI level adjustment indication information or different MCS or CQI adjustment states by using the fed back ACK or NACK, and reduce the bit number of the MCS or CQI level adjustment indication information, or distinguish more MCS adjustment states under the condition that the bit number of the MCS or CQI level adjustment indication information is not changed, so as to better indicate the change condition of the channel, thereby improving the transmission performance.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not described again.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) system, a 5G NR system, and the like. These various systems include terminal devices and network devices.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. The names of the terminal devices may also be different in different systems, for example, in a 5G system, the terminal devices may be referred to as User Equipments (UEs). Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers having mobile terminal devices, e.g., mobile devices that may be portable, pocket, hand-held, computer-included, or vehicle-mounted, communicate voice and/or data with a radio access network via the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiated Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may also be an evolved network device (eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station in a 5G network architecture (next generation system), or may also be a home evolved node B (HeNB), a relay node (HeNB), a home base station (femto), a pico base station (pico), and the like, which are not limited in the embodiment of the present application.

Various embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the display sequence in the embodiments of the present application only represents the sequence of the embodiments, and does not represent the advantages and disadvantages of the technical solutions provided by the embodiments.

According to the embodiment of the application, the transmission of the level adjustment indication information of the specific information based on the state of the hybrid automatic repeat request acknowledgement information is realized, wherein the specific information comprises a modulation coding level MCS or a channel quality information CQI.

The status of the harq acknowledgement information described in the embodiment of the present application is divided into an Acknowledgement (ACK) and a Negative Acknowledgement (NACK).

Optionally, the determining and reporting the level adjustment indication information of the specific information based on the state of the harq acknowledgement information in the embodiment of the present application specifically includes:

determining a corresponding relation between the reported Modulation and Coding Scheme (MCS) or Channel Quality Information (CQI) level adjustment indication Information and the MCS or CQI adjustment state based on the feedback ACK or NACK state, and further determining and reporting the level adjustment indication Information of the specific Information; and/or determining the bit number of the reported MCS or CQI grade adjustment indication information based on the feedback ACK or NACK state, and further determining and reporting the grade adjustment indication information of the specific information.

The following is a description of the different sides separately.

Terminal side behavior:

the terminal determines the corresponding relation between the MCS or CQI level adjustment indication information and the MCS or CQI adjustment state and/or the bit number of the MCS or CQI level adjustment indication information based on the fed-back ACK or NACK state. The MCS or CQI level adjustment indication information, e.g., adjustment or non-adjustment indication information, e.g., 0 indicates no adjustment, and 1 indicates adjustment; the MCS or CQI adjusts the status, e.g., not adjust, adjust one level up, adjust one level down, etc.

Optionally, the MCS adjustment status is an offset value between MCS levels of one or more PDSCHs scheduled by the base station;

optionally, the CQI adjustment status is an offset value between the CQI level reported by the terminal.

Optionally, the determining a corresponding relationship between the MCS or CQI level adjustment indication information and the MCS or CQI adjustment state based on the fed back ACK or NACK state specifically includes:

the corresponding relation between the MCS or CQI level adjustment indication information corresponding to the ACK state and the MCS or CQI adjustment state, and the corresponding relation between the MCS or CQI level adjustment indication information corresponding to the NACK state and the MCS or CQI adjustment state, which may be predefined in the standard or configured by the base station through high-level signaling;

when the ACK is fed back, determining the corresponding relation between the MCS or CQI level adjustment indication information and the MCS or CQI adjustment state based on the ACK, and then determining the reported MCS or CQI level adjustment indication information;

when feeding back ACK, the MCS or CQI adjustment status may be 0 or a positive integer value;

when NACK is fed back, determining the corresponding relation between MCS or CQI level adjustment indication information and MCS or CQI adjustment state based on the NACK, and then determining the reported MCS or CQI level adjustment indication information;

when NACK is fed back, the MCS or CQI adjustment status may be 0 or a negative integer value;

optionally, the determining a bit number of MCS or CQI level adjustment indication information based on the ACK or NACK status fed back specifically includes:

the bit number of the MCS or CQI level adjustment indication information corresponding to the ACK status and the bit number of the MCS or CQI level adjustment indication information corresponding to the NACK status may be predefined in the standard or configured by the base station through high layer signaling (that is, in this embodiment, the status of the harq acknowledgement information and the corresponding relationship between the bit number of the level adjustment indication information of the specific information, for example, the ACK corresponds to the MCS or CQI level adjustment indication information of 1 bit, and the NACK corresponds to the MCS or CQI level adjustment indication information of 2 bits, may also be set);

when the ACK is fed back, determining the bit number of the MCS or CQI level adjustment indication information based on the ACK, and determining the reported MCS or CQI level adjustment indication information;

when NACK is fed back, adjusting the bit number of the indication information based on MCS or CQI grade corresponding to the NACK, and determining the reported MCS or CQI grade adjustment indication information;

wherein, the bit number of the MCS or CQI level adjustment indication information corresponding to the ACK state and the bit number of the MCS or CQI level adjustment indication information corresponding to the NACK state may be different.

Optionally, if the MCS or CQI adjustment status is an offset value from the MCS level of a plurality of PDSCHs scheduled by the base station, determining a feedback ACK or NACK status based on one of the following ways;

determining a fed back ACK or NACK status determination based on a last one of the plurality of PDSCHs;

or determining the fed back ACK or NACK state based on the ACK or NACK state with a larger number in the PDSCHs;

and if the number of the ACK states and the NACK states corresponding to the PDSCHs is the same, directly determining that the MCS or CQI adjustment state is 0.

Base station side behavior: the receiving terminal determines and reports the grade adjustment indication information of the specific information based on the state of the hybrid automatic repeat request acknowledgement information; according to the grade adjustment indication information of the specific information, carrying out grade adjustment on the specific information; wherein the specific information comprises a modulation and coding level MCS or channel quality information CQI. The specific implementation is similar to that of the terminal side, and is not described herein.

An illustration of several specific embodiments is given below.

Embodiment 1 (determining the corresponding relationship between the reported MCS or CQI level adjustment indication information and the adjustment status based on the ACK or NACK status):

it is assumed that a base station configures a terminal to support MCS level adjustment indication information reporting, and the MCS level adjustment indication information reporting is feedback-multiplexed with Hybrid Automatic Repeat request-acknowledgement (HARQ-ACK) information on the same PUCCH resource and triggered by DCI scheduling PDSCH transmission, and the MCS level adjustment indication information indicates an offset value between an MCS index number expected by the terminal and an MCS index number corresponding to PDSCH transmission. For the situation in fig. 1, it is assumed that the terminal receives a PDSCH transmission in slot n, and when the corresponding HARQ-ACK feedback information is transmitted in slot n +2, the terminal feeds back HARQ-ACK and MCS level adjustment indication information simultaneously on the PUCCH resource fed back by HARQ-ACK in slot n + 2.

Case 1: when the terminal feeds back the ACK, based on the mapping relation defined in Table 1, the terminal adjusts the offset value between the MCS index numbers reported by the indication information and transmitted by the PDSCH through the 1-bit MCS level; if the MCS index number used for PDSCH transmission is assumed to be 8, if the MCS level used for the next PDSCH transmission needs to be indicated to be unchanged, reporting the MCS level adjustment indication information to be '0', which indicates that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is still 8; if the MCS used for the next PDSCH transmission needs to be indicated to be increased by one level, reporting MCS level adjustment indication information to be '1', wherein the MCS index number corresponding to the next PDSCH transmission expected by the terminal is 9.

Table 1 first correspondence between MCS level adjustment indication and MCS adjustment status for ACK:

1 bit MCS level adjustment indication	MCS adjustment state
		0	0
1	1

Case 2: when the terminal feeds back NACK, based on the mapping relationship defined in table 2, the terminal adjusts the offset value between the MCS index numbers reported by the indication information and transmitted by the PDSCH through the 1-bit MCS level; if the MCS index number used for PDSCH transmission is assumed to be 8, if the MCS level used for the next PDSCH transmission needs to be indicated to be unchanged, reporting the MCS level adjustment indication information to be '0', which indicates that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is still 8; if the MCS used for next PDSCH transmission needs to be indicated to be reduced by one level, the MCS level adjustment indication information is reported to be '1', and the MCS index number corresponding to the next PDSCH transmission expected by the terminal is 7.

Table 2 second correspondence between MCS level adjustment indication and MCS adjustment status corresponding to NACK:

1 bit MCS level adjustment indication	MCS adjustment state
		0	0
1	-1

That is, in this embodiment, the number of bits of MCS level adjustment indication information corresponding to ACK and NACK is the same and 1 bit. Therefore, in the present embodiment, different MCS level adjustment instruction information and MCS adjustment status are respectively associated with different ACK and NACK, that is, ACK corresponds to the first association shown in table 1, and NACK corresponds to the second association shown in table 2. The terminal determines whether the first relation or the second relation is determined according to the ACK or the NACK, and then the specific MCS level adjustment indication information can be determined by combining the currently expected MCS adjustment state.

It should be noted that, in this embodiment, only 1-bit MCS level adjustment indication information is taken as an example for description, the MCS level adjustment indication information may be indicated by 2, 3, and 4 bits, but the feedback ACK status and the feedback NACK correspond to different tables, and both tables are predefined in the standard or configured by the base station through RRC or MAC CE. In this embodiment, only MCS adjustment indication information is taken as an example for explanation, and a similar implementation is also possible if MCS adjustment indication information is replaced by CQI adjustment indication information. In addition, this embodiment only explains that MCS level adjustment indication information and HARQ-ACK feedback information are multiplexed on the same PUCCH for resource transmission, and if the MCS level adjustment indication information and the HARQ-ACK feedback information are transmitted on different PUCCH resources, or the transmission of the MCS level adjustment indication information on the PUSCH is also a similar determination scheme, the technical solution provided in this embodiment of the present application is also applicable, and is not limited.

Embodiment 2 (determining the number of bits of the MCS or CQI level adjustment indication information based on the ACK or NACK status):

the base station is assumed to configure that the terminal supports MCS level adjustment indication information reporting, the MCS level adjustment indication information reporting is transmitted on different PUCCH resources from HARQ-ACK feedback, and is triggered by scheduling DCI transmitted by a PDSCH, and the MCS level adjustment indication information indicates an offset value between an MCS index number expected by the terminal and a MCS index number transmitted by the corresponding PDSCH. For the case in fig. 2, it is assumed that the terminal receives one PDSCH transmission in slot n, the corresponding HARQ-ACK feedback information is transmitted in slot n +2, and the corresponding MCS level adjustment indication information is transmitted in slot n + 3.

Case 1: when the terminal feeds back the ACK, based on the mapping relationship defined in table 3, the terminal adjusts the offset value between the MCS index numbers reported by the indication information and transmitted by the PDSCH through the 1-bit MCS level; if the MCS index number used by PDSCH transmission is assumed to be 8, if the MCS level used by the next PDSCH transmission needs to be indicated to be unchanged, reporting MCS level adjustment indication information to be '1', which indicates that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is still 8; if the MCS used for the next PDSCH transmission needs to be indicated to be increased by one level, the MCS level adjustment indication information is reported to be '0', which indicates that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is 9.

Case 2: when the terminal feeds back NACK, based on the mapping relationship defined in table 3, the terminal adjusts the offset value between the MCS index numbers reported by the indication information and transmitted by the PDSCH through the 2-bit MCS level; if the MCS index number used by PDSCH transmission is assumed to be 8, if the MCS level used by the next PDSCH transmission needs to be indicated to be unchanged, reporting MCS level adjustment indication information to be '01', and indicating that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is still 8; if the MCS used for the next PDSCH transmission needs to be indicated to be reduced by 5 levels, the MCS level adjustment indication information is reported to be '11', which indicates that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is 3.

Table 3 correspondence between MCS level adjustment indication and MCS or CQI adjustment status:

that is, in this embodiment, different bits of MCS level adjustment instruction information are respectively associated with different ACKs and NACKs, where ACK corresponds to 1-bit MCS level adjustment instruction information and NACK corresponds to two-bit MCS level adjustment instruction information. The terminal determines the bit number of the MCS level adjustment indication information, and then determines the specific MCS level adjustment indication information by combining the currently expected MCS adjustment state.

It should be noted that, in this embodiment, only the ACK state corresponds to the 1-bit MCS level adjustment indication information, and the NACK state corresponds to the 2-bit MCS level adjustment indication information, which may be indicated by 1, 2, 3, or 4 bits, but the feedback ACK state and the feedback NACK state may correspond to different MCS level adjustment indication information bit numbers, and the MCS level adjustment indication information bit numbers corresponding to the ACK state and the NACK state are predefined in the standard or are configured by the base station through RRC or MAC CE, respectively. In this embodiment, only MCS adjustment indication information is taken as an example for explanation, and a similar implementation is also possible if MCS adjustment indication information is replaced by CQI adjustment indication information.

Embodiment 3 (determining the correspondence between the reported MCS or CQI level adjustment indication information and the adjustment status and the bit number of the MCS or CQI level adjustment indication information based on the ACK or NACK status):

the base station is assumed to configure that a terminal supports MCS level adjustment indication information reporting, the MCS level adjustment indication information reporting is transmitted on the same PUCCH resource as HARQ-ACK feedback, and is triggered by DCI of scheduling PDSCH transmission, and the MCS level adjustment indication information indicates an offset value between an MCS index number expected by the terminal and MCS index numbers of a plurality of corresponding PDSCH transmissions. For the case in fig. 3, it is assumed that the terminal receives one PDSCH transmission in time slot n/n +1/n +2, respectively, and the corresponding HARQ-ACK feedback information and MCS level adjustment indication information are both transmitted in time slot n + 3.

The method I comprises the following steps: the terminal determines MCS level adjustment indication information based on HARQ-ACK feedback information corresponding to the last PDSCH, and assumes that feedback information corresponding to PDSCH-1 is ACK, feedback information corresponding to PDSCH-2 is ACK, and feedback information corresponding to PDSCH-3 is NACK, that is, the reported MCS level adjustment indication information is determined based on the feedback information NACK of PDSCH-3 received in time slot n + 2;

the second method comprises the following steps: the terminal determines MCS level adjustment indication information based on HARQ-ACK feedback information corresponding to a plurality of PDSCHs, and if the feedback information corresponding to the PDSCH-1 is ACK, the feedback information corresponding to the PDSCH-2 is ACK, the feedback information corresponding to the PDSCH-3 is NACK, the number of ACK is 2, the number of NACK is 1, and the terminal determines the MCS level adjustment indication information based on the ACK state, namely based on the reported MCS level adjustment indication information;

in this embodiment, it is assumed that the corresponding relationship between the reported MCS or CQI level adjustment indication information and the adjustment status and the bit number of the MCS or CQI level adjustment indication information are determined based on the ACK or NACK status;

case 1: when the terminal feeds back the ACK, based on the mapping relationship defined in table 4, the terminal adjusts the offset value between the MCS index numbers reported by the indication information and transmitted by the PDSCH through the 1-bit MCS level; if the MCS index number used by PDSCH transmission is assumed to be 8, if the MCS level used by the next PDSCH transmission needs to be indicated to be unchanged, reporting MCS level adjustment indication information to be '0', and indicating that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is still 8; if the MCS used for the next PDSCH transmission needs to be indicated to be increased by one level, reporting MCS level adjustment indication information to be '1', wherein the MCS index number corresponding to the next PDSCH transmission expected by the terminal is 9.

Table 4 first correspondence between MCS level adjustment indication and MCS adjustment status for ACK:

1 bit MCS level adjustment indication	MCS adjustment state
		0	0
1	1

Case 2: when the terminal feeds back NACK, based on the mapping relationship defined in table 5, the terminal adjusts the offset value between the MCS index numbers reported by the indication information and transmitted by the PDSCH through the 2-bit MCS level; if the MCS index number used by PDSCH transmission is assumed to be 8, if the MCS level used by the next PDSCH transmission needs to be indicated to be unchanged, reporting MCS level adjustment indication information to be '00', and indicating that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is still 8; if the MCS used for next PDSCH transmission needs to be indicated to be reduced by one level, reporting MCS level adjustment indication information of '01' to indicate that the MCS index number corresponding to the next PDSCH transmission expected by the terminal is 7; if the MCS used for the next PDSCH transmission needs to be indicated to be reduced by 7 levels, although the MCS adjustment state does not contain-7, the adjustment state which is closest to-7 and is smaller than-7 can be found, and the MCS level adjustment indication information is reported to be '11', which indicates that the terminal expects the MCS index number corresponding to the next PDSCH transmission to be 0.

Table 5 second correspondence between MCS level adjustment indication and MCS adjustment status corresponding to NACK:

2-bit MCS level adjustment indication	MCS adjustment state
		00	0
01	-1
		10	-4
11	-8

That is, in the present embodiment, ACK corresponds to the first correspondence shown in table 4, and NACK corresponds to the second correspondence shown in table 5. In the first corresponding relation, the bit number of the MCS level adjustment indication information is 1 bit; in the second correspondence relationship, the number of bits of the MCS level adjustment indication information is 2 bits. In this embodiment, the terminal determines whether to look up the first corresponding relationship shown in table 4 or the second corresponding relationship shown in table 5 based on the difference between ACK and NACK, and then determines specific MCS level adjustment indication information by combining the currently expected MCS adjustment state.

It should be noted that, in this embodiment, only the MCS level adjustment indication information with 1 bit corresponding to the ACK state and the MCS level adjustment indication information with 2 bits corresponding to the NACK state are taken as an example for explanation, the MCS level adjustment indication information may be indicated by 1, 2, 3, and 4 bits, but the feedback ACK state and the feedback NACK state may correspond to different MCS level adjustment indication information bit numbers, and the MCS level adjustment indication information bit numbers corresponding to the ACK state and the NACK state are predefined in the standard or are configured by the base station through RRC or MAC CE, respectively. In this embodiment, only MCS adjustment indication information is taken as an example for explanation, and a similar implementation is also possible if MCS adjustment indication information is replaced by CQI adjustment indication information. In addition, this embodiment is only explained by multiplexing MCS level adjustment indication information and HARQ-ACK feedback information on the same PUCCH for resource transmission, and a similar determination scheme is also used if MCS level adjustment indication information and HARQ-ACK feedback information are transmitted on different PUCCH resources or MCS level adjustment indication information is transmitted on PUSCH.

In summary, referring to fig. 4, an information transmission method provided in the embodiment of the present application on a terminal side includes:

s101, determining the state of hybrid automatic repeat request acknowledgement information needing to be fed back;

s102, determining and reporting level adjustment indication information of specific information based on the state of the hybrid automatic repeat request acknowledgement information, wherein the specific information comprises a modulation coding level (MCS) or Channel Quality Information (CQI).

Optionally, the corresponding relationship is predefined, or the network side configures the terminal through a high-level signaling.

On the network side, referring to fig. 5, an information transmission method provided in the embodiment of the present application includes:

s201, a receiving terminal determines and reports grade adjustment indicating information of specific information based on the state of hybrid automatic repeat request acknowledgement information;

s202, carrying out grade adjustment on the specific information according to the grade adjustment indication information of the specific information; wherein the specific information comprises a modulation coding level (MCS) or Channel Quality Information (CQI).

On the terminal side, referring to fig. 6, an information transmission apparatus provided in an embodiment of the present application includes:

a memory 620 for storing program instructions;

a processor 600, configured to call the program instructions stored in the memory, and execute, according to the obtained program:

Optionally, the adjustment status of the MCS is an offset value between a level of an MCS expected by the terminal and a level of an MCS corresponding to a physical downlink shared channel PDSCH scheduled by the base station;

A transceiver 610 for receiving and transmitting data under the control of the processor 600.

Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

Alternatively, the processor 600 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

On the network side, referring to fig. 7, an information transmission apparatus provided in an embodiment of the present application includes:

a memory 520 for storing program instructions;

a processor 500 for calling the program instructions stored in the memory, and executing, according to the obtained program:

A transceiver 510 for receiving and transmitting data under the control of the processor 500.

Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

The processor 500 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD).

On the terminal side, referring to fig. 8, another information transmission apparatus provided in the embodiment of the present application includes:

a determining unit 11, configured to determine a state of harq acknowledgement information that needs to be fed back;

a reporting unit 12, configured to determine and report level adjustment indication information of specific information based on a state of the harq acknowledgement information, where the specific information includes a modulation and coding level (MCS) or a Channel Quality Information (CQI).

or, in the second mode, the bit number of the level adjustment indication information of the specific information to be reported is determined based on the state of the harq acknowledgement information, and the level adjustment indication information of the specific information is determined and reported according to the bit number.

On the network side, referring to fig. 9, another information transmission apparatus provided in the embodiment of the present application includes:

a receiving unit 21, configured to receive level adjustment indication information of specific information determined and reported by a terminal based on a state of harq acknowledgement information;

an adjusting unit 22 configured to perform level adjustment on the specific information according to level adjustment instruction information of the specific information; wherein the specific information comprises a modulation and coding level MCS or channel quality information CQI.

It should be noted that, in the embodiment of the present application, the division of the unit is schematic, and is only one logic function division, and when the actual implementation is realized, another division manner may be provided. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The embodiment of the present application provides a computing device, which may specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a Personal Digital Assistant (PDA), and the like. The computing device may include a Central Processing Unit (CPU), memory, input/output devices, etc., the input devices may include a keyboard, mouse, touch screen, etc., and the output devices may include a Display device, such as a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT), etc.

The memory may include Read Only Memory (ROM) and Random Access Memory (RAM), and provides the processor with program instructions and data stored in the memory. In the embodiment of the present application, the memory may be used to store a program of any one of the methods provided in the embodiment of the present application.

The processor is used for executing any method provided by the embodiment of the application according to the obtained program instructions by calling the program instructions stored in the memory.

Embodiments of the present application provide a computer storage medium for storing computer program instructions for an apparatus provided in the embodiments of the present application, which includes a program for executing any one of the methods provided in the embodiments of the present application.

The computer storage media may be any available media or data storage device that can be accessed by a computer, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

The method provided by the embodiment of the application can be applied to terminal equipment and also can be applied to network equipment.

The Terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), or the like, and optionally, the Terminal may have a capability of communicating with one or more core networks via a Radio Access Network (RAN), for example, the Terminal may be a Mobile phone (or a "cellular" phone), a computer with Mobile property, or the like, and for example, the Terminal may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile device.

A network device may be a base station (e.g., access point) that refers to a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (NodeB or eNB or e-NodeB) in LTE, or a gNB in 5G system. The embodiments of the present application are not limited.

The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An information transmission method, comprising:

2. The method of claim 1, wherein determining and reporting level adjustment indication information of specific information based on the status of the HARQ-ACK information specifically comprises:

the method comprises the steps of determining the corresponding relation between the grade adjustment indication information of the reported specific information and the adjustment state of the specific information based on the state of the hybrid automatic repeat request acknowledgement information; reporting the grade adjustment indication information of the specific information according to the determined corresponding relation;

3. The method according to claim 2, wherein the correspondence is predefined or configured to the terminal by the network side through higher layer signaling.

4. The method according to claim 2, wherein in the second mode, the bit number of the reported level adjustment indication information of the specific information corresponding to the status of the harq acknowledgement information is determined according to a predefined mode or a mode configured by a higher layer signaling on a network side.

5. The method of claim 1, wherein the status of the HARQ acknowledgement information comprises an ACK status or a NACK status.

6. The method according to claim 2, wherein the adjustment status of the MCS is an offset value between a level of MCS expected by the terminal and a level of MCS corresponding to a Physical Downlink Shared Channel (PDSCH) scheduled by the base station;

7. The method according to claim 6, wherein if the adjustment status of the MCS is an offset value between a level of the MCS expected by the terminal and a level of specific information corresponding to a plurality of PDSCHs scheduled by the base station, the status of the HARQ acknowledgement information is determined by one of:

determining that the state of the hybrid automatic repeat request acknowledgement information is ACK if the number of PDSCHs in which the state of the corresponding hybrid automatic repeat request acknowledgement information in the plurality of PDSCHs is ACK is large; and if the number of PDSCHs of which the corresponding hybrid automatic repeat request acknowledgement information states are negative NACKs is large, determining that the state of the hybrid automatic repeat request acknowledgement information is NACK.

8. An information transmission method, comprising:

according to the grade adjustment indication information of the specific information, carrying out grade adjustment on the specific information; wherein the specific information comprises a modulation coding level (MCS) or Channel Quality Information (CQI).

9. The method of claim 8, wherein the status of the HARQ acknowledgement information comprises an ACK status or a NACK status.

10. An information transmission apparatus, characterized in that the apparatus comprises:

a memory for storing program instructions;

11. The apparatus of claim 10, wherein determining and reporting level adjustment indication information of specific information based on the status of the harq acknowledgement information specifically comprises:

12. The apparatus of claim 11, wherein the correspondence is predefined or configured to the terminal by the network side through higher layer signaling.

13. The apparatus according to claim 11, wherein in the second mode, a bit number of the reported specific information level adjustment indication information corresponding to the status of the harq acknowledgement information is determined according to a predefined mode or a mode configured by a high layer signaling on a network side.

14. The apparatus of claim 10, wherein the status of the harq acknowledgement information comprises an ACK status or a NACK status.

15. The apparatus of claim 11, wherein the adjustment status of the MCS is an offset value between a level of an MCS expected by a terminal and a level of an MCS corresponding to a physical downlink shared channel PDSCH scheduled by a base station;

16. The apparatus of claim 15, wherein if the MCS adjustment status is an offset value between a level of an MCS expected by the terminal and a level of specific information corresponding to the plurality of PDSCHs scheduled by the base station, the status of the harq acknowledgement information for determining the adjustment status of the specific information is determined by one of:

17. An information transmission apparatus, characterized in that the apparatus comprises:

a memory for storing program instructions;

the receiving terminal determines and reports grade adjustment indicating information of the specific information based on the state of the hybrid automatic repeat request acknowledgement information;

18. The apparatus of claim 17, wherein the status of the harq acknowledgement information comprises an ACK status or a NACK status.

19. An information transmission apparatus, characterized in that the apparatus comprises:

20. An information transmission apparatus, characterized in that the apparatus comprises:

an adjusting unit configured to perform level adjustment on the specific information according to level adjustment instruction information of the specific information; wherein the specific information comprises a modulation coding level (MCS) or Channel Quality Information (CQI).

21. A computer storage medium having computer-executable instructions stored thereon for causing a computer to perform the method of any one of claims 1 to 9.