CN109921876B

CN109921876B - CSI modulation information determination method and apparatus, computer storage medium

Info

Publication number: CN109921876B
Application number: CN201711329887.9A
Authority: CN
Inventors: 司倩倩; 高雪娟
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2020-11-24
Anticipated expiration: 2037-12-13
Also published as: CN109921876A

Abstract

The application discloses a CSI modulation information determination method and device and a computer storage medium, which are used for determining CSI modulation information, in particular to the determination of the CSI modulation information when CSI is transmitted on a PUSCH and no data is contained. The method for determining the CSI modulation information provided by the embodiment of the application comprises the following steps: determining a CSI code rate; and determining CSI modulation information according to the CSI code rate.

Description

CSI modulation information determination method and apparatus, computer storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for determining CSI modulation information, and a computer storage medium.

Background

With the development of mobile communication service demand, organizations such as International Telecommunication Union (ITU) and third Generation Partnership Project (3 GPP) have started to research New wireless communication systems (e.g., 5G NR, 5Generation New RAT). At present, in 5G, when Channel State Information (CSI) is transmitted on a Physical Uplink Shared Channel (PUSCH) and Uplink Shared Channel (UL-SCH) data is not included, it is supported that the CSI is transmitted on the PUSCH using Quadrature Phase Shift Keying (QPSK) and a higher Modulation order, such as 16 Quadrature Amplitude Modulation (QAM) and/or 64QAM, but there is no specific method for determining the Modulation order to be used at present.

Disclosure of Invention

The embodiment of the application provides a CSI modulation information determination method and device and a computer storage medium, which are used for determining CSI modulation information, in particular to the determination of the CSI modulation information when CSI is transmitted on a PUSCH and data is not contained.

The method for determining the CSI modulation information provided by the embodiment of the application comprises the following steps:

determining a CSI code rate;

and determining CSI modulation information according to the CSI code rate.

By the method, the CSI code rate is determined, and the CSI modulation information is determined according to the CSI code rate, so that the CSI modulation information can be determined under the condition that CSI is transmitted on a PUSCH and does not contain data.

Optionally, the determining the CSI code rate specifically includes:

determining the number of CSI bits and the size of CSI transmission resources;

and determining the CSI code rate according to the CSI bit number and the size of the CSI transmission resource.

Optionally, determining CSI modulation information according to the CSI code rate specifically includes:

and comparing the CSI code rate with a CSI code rate threshold, and determining CSI modulation information according to the comparison result.

Optionally, the CSI code rate threshold is predefined by a protocol or notified to the terminal by the base station.

Optionally, the CSI code rate is a CSI first code rate calculated according to the CSI bit number and the size of the CSI transmission resource;

comparing the CSI code rate with a CSI code rate threshold, and determining CSI modulation information according to the comparison result, wherein the method specifically comprises the following steps:

judging whether the CSI first code rate exceeds a CSI first code rate threshold or not;

if not, determining that the modulation order used by the CSI is 2;

and if so, calculating to obtain a CSI second code rate according to the CSI bit number and the size of the CSI transmission resource, and determining CSI modulation information by using the CSI second code rate.

Optionally, determining CSI modulation information by using the CSI second code rate specifically includes:

judging whether the CSI second code rate exceeds a CSI second code rate threshold or not;

if not, determining that the modulation order used by the CSI is 4;

if so, then:

determining the modulation order used by the CSI to be 6;

or, calculating to obtain a CSI third code rate according to the CSI bit number and the size of the CSI transmission resource, and determining CSI modulation information by using the CSI third code rate;

or, the CSI bit number is adjusted, a new CSI code rate is obtained by recalculating the adjusted CSI bit number and the size of the CSI transmission resource, and the CSI modulation information is determined by using the new CSI code rate.

Optionally, determining CSI modulation information by using the CSI third code rate specifically includes:

judging whether the third code rate of the CSI exceeds a third code rate threshold of the CSI;

if not, determining that the modulation order used by the CSI is 6;

and if so, adjusting the CSI bit number, recalculating by using the adjusted CSI bit number and the size of the CSI transmission resource to obtain a new CSI code rate, and determining CSI modulation information by using the new CSI code rate.

Optionally, the new CSI code rate is a CSI first code rate, a CSI second code rate, or a CSI third code rate.

Optionally, the CSI first code rate is x/2N, the CSI second code rate is x/4N, and the CSI third code rate is x/6N, where x is a CSI bit number, and N is a size of a CSI transmission resource.

An embodiment of the present application provides a device for determining CSI modulation information, including:

a memory for storing program instructions;

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

determining a CSI code rate;

and determining CSI modulation information according to the CSI code rate.

Optionally, the determining, by the processor, the CSI code rate specifically includes:

determining the number of CSI bits and the size of CSI transmission resources;

Optionally, the determining, by the processor, CSI modulation information according to the CSI code rate specifically includes:

the processor compares the CSI code rate with a CSI code rate threshold, and determines CSI modulation information according to a comparison result, which specifically includes:

if not, determining that the modulation order used by the CSI is 2;

Optionally, the determining, by the processor, CSI modulation information by using the CSI second code rate specifically includes:

if not, determining that the modulation order used by the CSI is 4;

if so, then:

determining the modulation order used by the CSI to be 6;

if not, determining that the modulation order used by the CSI is 6;

Another apparatus for determining CSI modulation information provided in an embodiment of the present application includes:

a first unit for determining a CSI code rate;

and the second unit is used for determining CSI modulation information according to the CSI code rate.

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 needed 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 based on these drawings without creative efforts.

Fig. 1 is a schematic general flow chart of a CSI modulation information determination method according to an embodiment of the present application;

fig. 2 is a schematic specific flowchart of a CSI modulation information determining method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a CSI modulation information determining apparatus according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another CSI modulation information determining apparatus according to an embodiment of the present application.

Detailed Description

In a Long Term Evolution (LTE) wireless communication system, aperiodic CSI is transmitted through a physical uplink shared channel, PUSCH, and an evolved node b (eNodeB) triggers User Equipment (UE) to report the aperiodic CSI by scheduling Downlink Control Information (DCI) of uplink data. An information field exists in Downlink Control Information (DCI) for scheduling uplink data and is used for triggering aperiodic CSI reporting, and when the information field indicates that UE needs to report the aperiodic CSI, the UE reports the aperiodic CSI at a predefined position through a Physical Uplink Shared Channel (PUSCH).

Control information (including HARQ-ACK, CSI) and UL-SCH data are supported for multiplexing transmission on a PUSCH in an LTE system, or only control information is transmitted on the PUSCH. The eNodeB indicates that only control information is transmitted on the PUSCH by setting certain information fields in the DCI to a special state. Different conditions are specified in the 3GPP protocols that assume that no UL-SCH Transport Block (TB) is transmitted and that only control information is transmitted on the PUSCH. For example, one possible case is that DCI format (format)0 is used and the MCS level is 29, or when DCI format 4 is used and only one TB is enabled and the enabled TB corresponds to the MCS level is 29 and the number of indicated transmission layers is 1, the information field triggering CSI in the DCI is 1 bit and is set to trigger aperiodic CSI reporting, and the number of Physical Resource Blocks (PRBs) is less than or equal to 4, it is considered that only transmission of control information exists on the PUSCH scheduled by the DCI. When the aperiodic CSI and the data are multiplexed and transmitted on the PUSCH, the aperiodic CSI and the data use the same modulation order; when the aperiodic CSI contains no data in PUSCH transmission, QPSK modulation is fixedly used.

In a new radio technology (NR), CSI may contain more bits, and thus a larger modulation order is supported, and embodiments of the present application provide a method for determining CSI modulation information (e.g., modulation order) when CSI is transmitted on PUSCH and does not contain data (e.g., UL-SCH data).

Referring to fig. 1, a method for determining CSI modulation information provided in an embodiment of the present application includes:

s101, determining a CSI code rate;

and S102, determining CSI modulation information according to the CSI code rate.

It should be noted that the technical solutions provided in the embodiments of the present application may be applied to a terminal side, and may also be applied to a network side, for example, a base station side of the network side.

The CSI modulation information described in the embodiment of the present application may be, for example, a CSI modulation order, and may also include other information.

Optionally, step S101 specifically includes:

determining the number of CSI bits and the size of CSI transmission resources;

Of course, other methods may be used to determine the CSI code rate.

Optionally, step S102 specifically includes:

Of course, other ways of determining CSI modulation information may be used in addition to this.

Optionally, the CSI code rate threshold is predefined by a protocol, that is, the value of the CSI code rate threshold is preset, or the CSI code rate threshold is notified to the terminal by the base station, for example, the CSI code rate threshold may be notified to the UE by the base station through higher layer signaling.

Optionally, the CSI code rate threshold according to this embodiment may include one or more thresholds, for example, a CSI first code rate threshold, a CSI second code rate threshold, and a CSI third code rate threshold.

Accordingly, the CSI code rate described in the embodiment of the present application may also have one or more types, for example, a CSI first code rate, a CSI second code rate, and a CSI third code rate. During comparison, the CSI first code rate may be compared with a CSI first code rate threshold, the CSI second code rate may be compared with a CSI second code rate threshold, and the CSI third code rate may be compared with a CSI third code rate threshold. Specific examples are as follows:

if not, determining that the modulation order used by the CSI is 2;

if not, determining that the modulation order used by the CSI is 4;

if so, then:

determining the modulation order used by the CSI to be 6;

For example, the CSI bit number may be adjusted by reducing the value of the CSI bit number.

if not, determining that the modulation order used by the CSI is 6;

Of course, the CSI coding rate is not limited to be determined in this way, and the CSI first coding rate, the CSI second coding rate, and the CSI third coding rate may be determined by using different algorithms or ways according to actual needs.

Taking the terminal side as an example, the specific method for determining CSI modulation information includes:

and the terminal determines the modulation order used by the CSI according to the CSI bit number, the CSI code rate threshold and the size of the CSI transmission resource.

The terminal-side processing flow specifically includes:

the method comprises the following steps: and determining the CSI bit number, the CSI code rate threshold and the size of the CSI transmission resource.

The CSI code rate threshold is a value predefined in a protocol or a value configured by a base station to the UE through a high-level signaling, and the CSI code rate threshold may include the following different values, or only one value (that is, the following CSI first code rate threshold, CSI second code rate threshold, and CSI third code rate threshold are the same, and are both CSI code rate thresholds);

the first code rate threshold of the CSI is a code rate threshold value used by switching the CSI from QPSK to 16 QAM;

the CSI second code rate threshold is a code rate threshold value used when the CSI is switched from 16QAM to 64 QAM;

optionally, the third CSI code rate threshold is a code rate threshold for determining whether the CSI is compressed;

step two: and determining a modulation order used by the CSI according to the CSI bit number, the CSI code rate threshold and the size of the CSI transmission resource, wherein the size of the CSI transmission resource is assumed to be N REs, and the CSI bit number is assumed to be x.

Specifically, referring to fig. 2, step two specifically includes:

step S201: calculating a CSI first code rate according to the CSI bit number and the size of the CSI transmission resource, wherein the CSI first code rate is x/2N;

step S202: judging whether the first CSI code rate exceeds a first CSI code rate threshold or not;

if not, step S203 is executed: determining that the modulation order used by the CSI is 2, namely that the CSI uses QPSK modulation;

if so, execute step S204: calculating a CSI second code rate according to the CSI bit number and the size of the CSI transmission resource, wherein the CSI second code rate is x/4N, and entering step S205;

step S205: judging whether the CSI second code rate exceeds a CSI second code rate threshold or not;

if not, step S206 is executed: determining that the modulation order used by the CSI is 4, namely the CSI uses 16QAM modulation;

if so, step S207 is executed:

determining that the modulation order used by the CSI is 6, namely that the CSI uses 64QAM modulation;

or, calculating a third CSI code rate according to the CSI bit number and the size of the CSI transmission resource, that is, the third CSI code rate is x/6N, and entering step S208;

or, discarding a part of CSI according to a certain priority rule, reducing the CSI bit number, that is, reducing the value of x, and returning to step S202 or S205 (not shown in the figure), specifically, if the first CSI code rate is obtained by recalculation using the reduced value of x and the size of the CSI transmission resource, performing step S202, and if the second CSI code rate is obtained by recalculation using the reduced value of x and the size of the CSI transmission resource, performing step S205;

step S208: judging whether the third code rate of the CSI exceeds a third code rate threshold of the CSI;

if not, step S209 is executed: determining that the modulation order used by the CSI is 6, namely that the CSI uses 64QAM modulation;

if so, step S210 is executed:

discarding part of CSI according to a certain priority principle, reducing the CSI bit number, and returning to step S202 or S205 or S208 (not shown in the figure), specifically, if the CSI first code rate is obtained by recalculation using the reduced value of x and the size of the CSI transmission resource, executing step S202, if the CSI second code rate is obtained by recalculation using the reduced value of x and the size of the CSI transmission resource, executing step S205, and if the CSI third code rate is obtained by recalculation using the reduced value of x and the size of the CSI transmission resource, executing step S208.

The behavior of the base station side is similar to that of the terminal side, and the modulation order of the CSI is determined in the same manner as that of the terminal side, which is not described in detail herein.

An illustration of three specific embodiments is given below.

Example 1:

the base station instructs the UE to transmit CSI in a PUSCH without including UL-SCH data (although other data may be used) transmission content through the DCI. Assuming that the size of the CSI transmission resource is the number of REs available for transmitting CSI in PUSCH, which totally contains 144 REs, if the code rate threshold for CSI transmission is predefined in the protocol to be 1/3;

when the number of CSI bits required to be transmitted by the UE is 50, the first CSI code rate is 50/(2 × 144) ═ 0.17, and the code rate does not exceed the CSI code rate threshold, the CSI is transmitted by using a QPSK modulation mode;

when the number of CSI bits required to be transmitted by the UE is 100, the first CSI code rate is 100/(2 × 144) ═ 0.35, and the CSI code rate exceeds the CSI code rate threshold, the second CSI code rate is calculated to be 100/(4 × 144) ═ 0.17, and the CSI code rate threshold is not exceeded at this time, and a 16QAM modulation mode is used for transmission;

when the number of CSI bits that the UE needs to transmit is 200, the first CSI code rate threshold is 200/(2 × 144) ═ 0.69, and if the CSI code rate threshold is exceeded, the second CSI code rate is calculated to be 200/(4 × 144) ═ 0.35, and if the CSI code rate threshold is still exceeded, the third CSI code rate is calculated to be 200/(6 × 144) ═ 0.23, and if the CSI code rate threshold is not exceeded, the CSI is transmitted by using a 64QAM modulation scheme.

Example 2:

and the base station instructs the UE to transmit CSI in a PUSCH through the DCI, wherein the PUSCH does not contain UL-SCH data transmission content. Assuming that the size of the CSI transmission resource is the number of REs available for transmitting CSI in PUSCH and totally contains 144 REs, if the base station notifies the UE through RRC signaling that the first code rate threshold of CSI is 1/3, the second code rate threshold is 1/2;

when the number of CSI bits required to be transmitted by the UE is 50, the first CSI code rate is 50/(2 × 144) ═ 0.17, and the first CSI code rate does not exceed the first CSI code rate threshold, the CSI is transmitted by using a QPSK modulation mode;

when the number of CSI bits required to be transmitted by the UE is 100, the first CSI code rate is 100/(2 × 144) ═ 0.35, and when the number of CSI bits exceeds the first CSI code rate threshold, the second CSI code rate is calculated to be 100/(4 × 144) ═ 0.17, and at this time, the second CSI code rate threshold is not exceeded, and a 16QAM modulation mode is used for transmission;

when the number of CSI bits required to be transmitted by the UE is 200, the first CSI code rate threshold is 200/(2 × 144) ═ 0.69, and if the first CSI code rate threshold is exceeded, the second CSI code rate threshold is calculated to be 200/(4 × 144) ═ 0.35, and if the second CSI code rate threshold is not exceeded, the transmission is performed by using a 16QAM (quadrature amplitude modulation) modulation mode;

when the number of CSI bits that the UE needs to transmit is 300, the CSI first code rate threshold is 300/(2 × 144) ═ 1.04, and if the CSI first code rate threshold is exceeded, the CSI second code rate is calculated to be 300/(4 × 144) ═ 0.52, and if the CSI second code rate threshold is exceeded, the CSI is transmitted by using a 64QAM modulation method.

Example 3:

and the base station instructs the UE to transmit CSI in a PUSCH through the DCI, wherein the PUSCH does not contain UL-SCH data transmission content. If the base station informs the UE through RRC signaling that the CSI first code rate threshold is 1/3, the second code rate threshold is 1/2.

When the number of CSI bits that the UE needs to transmit is 100:

assuming that the size of the CSI transmission resource is 288 REs, the CSI first code rate is 100/(2 × 288) ═ 0.17, and the CSI first code rate does not exceed the threshold of the CSI first code rate, the CSI first code rate is transmitted by using the QPSK modulation method;

assuming that the size of the CSI transmission resource is 144 REs, the first CSI code rate is 100/(2 × 144) ═ 0.35, and if the first CSI code rate exceeds the threshold, the second CSI code rate is calculated as 100/(4 × 144) ═ 0.17, and at this time, the second CSI code rate does not exceed the threshold, and a 16QAM modulation method is used for transmission;

optionally, in this embodiment, the base station further notifies the UE through Radio Resource Control (RRC) signaling that the CSI third code rate threshold is 2/3.

Assuming that the size of the CSI transmission resource is 24 REs, the CSI first code rate threshold is 100/(2 × 24) ═ 2.08, and if the CSI first code rate threshold is exceeded, the CSI second code rate threshold is calculated to be 100/(4 × 24) ═ 1.04, and if the CSI second code rate threshold is exceeded, the CSI third code rate threshold is calculated to be 100/(6 × 24) ═ 0.69, and if the CSI third code rate threshold is exceeded, the CSI is compressed, and a part of the CSI is discarded according to a certain priority principle, for example: in some cases, the CSI may include two parts, CSI part1 and CSI part2, where CSI part1 includes Rank Indication (RI) and CSI information of the part, and CSI part2 includes the remaining CSI information; when the CSI contains two parts, the CSI part2 may be discarded, and only the information of the CSI part1 is retained. Alternatively, the CSI part2 may include both high priority information bits and low priority information bits, and the low priority information bits in the CSI part2 may be discarded. Assuming that the number of the compressed CSI bits is 50, the CSI first code rate is calculated again to be 50/(2 × 24) ═ 1.04, and if the CSI first code rate threshold is exceeded, the CSI second code rate is calculated to be 50/(4 × 24) ═ 0.52, and if the CSI second code rate threshold is exceeded, the CSI third code rate is calculated to be 50/(6 × 24) — 0.35, and if the CSI third code rate threshold is not exceeded, the transmission is performed by using a 64QAM modulation method.

Referring to fig. 3, an apparatus for determining CSI modulation information provided in an embodiment of the present application includes:

a memory 11 for storing program instructions;

a processor 12 for calling the program instructions stored in the memory and executing, according to the obtained program:

determining a CSI code rate;

and determining CSI modulation information according to the CSI code rate.

Optionally, the determining, by the processor 12, the CSI code rate specifically includes:

determining the number of CSI bits and the size of CSI transmission resources;

Optionally, the determining, by the processor 12, CSI modulation information according to the CSI code rate specifically includes:

the processor 12 compares the CSI code rate with a CSI code rate threshold, and determines CSI modulation information according to a comparison result, which specifically includes:

if not, determining that the modulation order used by the CSI is 2;

Optionally, the determining, by the processor 12, CSI modulation information by using the CSI second code rate specifically includes:

if not, determining that the modulation order used by the CSI is 4;

if so, then:

determining the modulation order used by the CSI to be 6;

if not, determining that the modulation order used by the CSI is 6;

Referring to fig. 4, another apparatus for determining CSI modulation information provided in an embodiment of the present application includes:

a first unit 21, configured to determine a CSI code rate;

a second unit 22, configured to determine CSI modulation information according to the CSI code rate.

The apparatus provided in the embodiment of the present application may be a computing device, and the computing device 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 embodiments of the present application, the memory may be used for storing a program of any one of the methods provided by the embodiments of the present application.

The processor is used for executing any one of the methods 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 the above-mentioned computing device, which includes a program for executing any of the methods provided by the above-mentioned 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 memory (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 (User Equipment, abbreviated as "UE"), a Mobile Station (Mobile Station, abbreviated as "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 through a Radio Access Network (RAN), for example, the Terminal may be a Mobile phone (or referred to as a "cellular" phone), a computer with Mobile property, or the like, and for example, the Terminal may also be a portable, pocket, hand-held, computer-built-in, 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, or an evolved Node B (NodeB or eNB or e-NodeB) in LTE, which is not limited in this embodiment.

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.

In summary, in the embodiment of the present application, in NR, CSI may include a larger number of bits, so that a larger modulation order is supported, and there is no specific method for indicating information such as the modulation order of aperiodic CSI when PUSCH is transmitted and does not include data. The scheme for determining the information such as the CSI modulation order and the like according to the CSI bit number, the CSI code rate threshold and the size of the CSI transmission resource is provided in the embodiment of the application, and the higher-order modulation mode used when the CSI in NR is transmitted in the PUSCH and does not contain the UL-SCH can be supported.

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. A method for determining Channel State Information (CSI) modulation information is characterized by comprising the following steps:

determining the number of CSI bits and the size of CSI transmission resources;

determining a CSI code rate according to the CSI bit number, the size of the CSI transmission resource and a preset modulation order;

and determining CSI modulation information according to the CSI code rate.

2. The method of claim 1, wherein determining CSI modulation information according to the CSI code rate specifically includes:

3. The method of claim 2, wherein the CSI code rate threshold is predefined by a protocol or signaled to a terminal by a base station.

4. The method of claim 2, wherein the CSI code rate is a CSI first code rate calculated according to a CSI bit number and a size of a CSI transmission resource;

if not, determining that the modulation order used by the CSI is 2;

5. The method according to claim 4, wherein determining the CSI modulation information using the CSI second code rate specifically includes:

if not, determining that the modulation order used by the CSI is 4;

if so, then:

determining the modulation order used by the CSI to be 6;

6. The method of claim 5, wherein determining the CSI modulation information using the CSI third code rate specifically includes:

if not, determining that the modulation order used by the CSI is 6;

7. The method of claim 5 or 6, wherein the new CSI code rate is a CSI first code rate, a CSI second code rate, or a CSI third code rate.

8. The method of claim 7, wherein the CSI first code rate is x/2N, the CSI second code rate is x/4N, and the CSI third code rate is x/6N, where x is a number of CSI bits and N is a size of CSI transmission resources.

9. An apparatus for determining CSI modulation information, the apparatus comprising:

a memory for storing program instructions;

determining the number of CSI bits and the size of CSI transmission resources;

and determining CSI modulation information according to the CSI code rate.

10. The apparatus of claim 9, wherein the processor determines the CSI modulation information according to the CSI code rate, and specifically includes:

11. The apparatus of claim 10, wherein the CSI code rate threshold is predefined by a protocol or signaled to a terminal by a base station.

12. The apparatus of claim 10, wherein the CSI code rate is a CSI first code rate calculated according to a CSI bit number and a size of a CSI transmission resource;

if not, determining that the modulation order used by the CSI is 2;

13. The apparatus of claim 12, wherein the processor determines the CSI modulation information using the CSI second code rate, specifically comprising:

if not, determining that the modulation order used by the CSI is 4;

if so, then:

determining the modulation order used by the CSI to be 6;

14. The apparatus of claim 13, wherein determining CSI modulation information using the CSI third code rate specifically comprises:

if not, determining that the modulation order used by the CSI is 6;

15. The apparatus of claim 13 or 14, wherein the new CSI code rate is a CSI first code rate, a CSI second code rate, or a CSI third code rate.

16. The apparatus of claim 15, wherein the CSI first code rate is x/2N, the CSI second code rate is x/4N, and the CSI third code rate is x/6N, where x is a number of CSI bits and N is a size of CSI transmission resources.

17. An apparatus for determining CSI modulation information, the apparatus comprising:

a first unit determining the number of CSI bits and the size of CSI transmission resources;

18. 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 8.