CN107835065B

CN107835065B - Method and device for notifying channel quality indication and modulation coding scheme

Info

Publication number: CN107835065B
Application number: CN201711073264.XA
Authority: CN
Inventors: 夏亮; 夏媛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd; Shanghai Huawei Technologies Co Ltd
Priority date: 2013-06-08
Filing date: 2014-01-23
Publication date: 2021-05-11
Anticipated expiration: 2034-01-23
Also published as: CN107835065A; CN107819549B; CN104429010B; CN107819549A; CN107959547B; CN107959547A; CN104429010A

Abstract

The invention discloses a method and a device for notifying a channel quality indication and a modulation coding scheme, which relate to the field of communication and can select a modulation mode higher than 64QAM so as to improve the performance of a communication system. The method comprises the following steps: the terminal acquires a first CQI number according to the first CQI table and sends the first CQI number to the base station; a base station receives a first CQI number sent by a terminal UE, determines a first MCS number according to a first CQI table, a first MCS table and the received first CQI number, and sends the determined first MCS number to the UE; the terminal receives a first MCS number sent by the base station, and determines a modulation order and a coding block size according to the first MCS table and the received first MCS number; the first CQI table comprises items of which the modulation mode is higher than 64QAM, and the first MCS table comprises items of which the modulation mode is higher than 64 QAM.

Description

Method and device for notifying channel quality indication and modulation coding scheme

This application claims the priority of PCT patent application No. PCT/CN2013/077023 entitled "a notification method and apparatus for channel quality indication and modulation coding scheme" filed on 2013, 06/08, which is incorporated herein by reference in its entirety.

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for notifying channel quality indication and a modulation and coding scheme.

Background

Currently, in a Long Term Evolution (LTE) system, an adaptive procedure of a Physical Downlink Shared Channel (PDSCH) is as follows: the method includes that User Equipment (UE) estimates Channel Information used for measuring Channel State Information (CSI), the UE calculates a Signal to Interference plus Noise Ratio (SINR) through the Channel Information and based on an optimal Rank Indication (RI) and/or a Precoding Matrix Indication (PMI), the UE obtains a corresponding Channel Quality Indication (CQI) according to the SINR, and reports a CQI value to a base station. A base station allocates a Modulation and Coding Scheme (MCS) to a UE according to a Channel Quality Indicator (CQI) value reported by the UE and a network condition, where the MCS is used to indicate a Modulation mode and a Coding mode adopted by a current PDSCH.

In a hot spot scenario, for example, in a Relay (Relay) and LTE Hotspot Improvements (LTE-Hi, LTE Hotspot Improvements) scenario, the UE needs a Modulation scheme higher than that of 64-phase Quadrature Amplitude Modulation (QAM), but due to the limitation of the prior art, a maximum CQI value is 15, and a corresponding Modulation scheme is 64QAM, so that the UE cannot select a Modulation scheme higher than that of 64QAM, and further system performance is affected. Similarly, the base station cannot assign a higher modulation scheme than 64QAM to the UE.

Disclosure of Invention

The embodiment of the invention provides a method and a device for notifying a channel quality indication and a modulation coding scheme, which support UE and a base station to select a modulation mode with a modulation mode higher than 64QAM, thereby improving the system performance.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a method for notifying CQI is provided, including:

acquiring a first CQI number according to the acquired first CQI table;

sending a first CQI number to a base station; so that the base station determines a first Modulation and Coding Scheme (MCS) number according to the first CQI number;

the first CQI table includes:

the modulation mode is higher than the item of 64-phase quadrature amplitude modulation QAM;

at least one modulation mode in a second CQI table is an item of QPSK, and the item of the at least one modulation mode being QPSK comprises a combination except a first combination in a combination formed by at least one item of the QPSK in the second CQI table, wherein the first combination is N items with continuous maximum CQI numbers corresponding to the QPSK in the second CQI table, wherein N is equal to 3 or the N is a positive integer smaller than 4 or the N is a positive integer; and/or at least one item of which the modulation mode is 16QAM in the second CQI table;

wherein the modulation schemes in the entries in the second CQI table include only QPSK, 16QAM, and 64 QAM.

In a first possible implementation manner, according to the first aspect, the entry that at least one modulation scheme in the second CQI table is QPSK includes:

the modulation mode in the second CQI table is a partial item of QPSK, and the CQI numbers corresponding to the partial item are equally spaced; alternatively, the first and second electrodes may be,

the modulation mode in the second CQI table is a partial item of QPSK, and the CQI numbers corresponding to the partial item are not at equal intervals; alternatively, the first and second electrodes may be,

the modulation mode in the second CQI table is a partial item of QPSK, the CQI number corresponding to the partial item is discontinuous, and at least one item except the item with the maximum CQI number corresponding to all the items of which the modulation mode in the second CQI table is the QPSK is included; alternatively, the first and second electrodes may be,

the modulation mode in the second CQI table is a partial item of QPSK, the CQI numbers corresponding to the partial item are continuous, and at least one item except the item with the maximum CQI number corresponding to all the items of which the modulation mode in the CQI table is the QPSK.

In a second possible implementation manner, according to the first aspect, the item in the second CQI table, where at least one modulation scheme is 16QAM, includes:

all the modulation modes in the second CQI table are 16QAM items; alternatively, the first and second electrodes may be,

at least one item except the item with the smallest CQI number in all the items with the modulation modes of 16QAM in the second CQI table.

In a third possible implementation manner, according to the first aspect or the first two possible implementation manners, the first CQI table further includes:

at least one modulation mode in the second CQI table is an item of 64 QAM.

In a fourth possible implementation manner, according to the third possible implementation manner, the item that the at least one modulation manner is 64QAM includes:

the modulation modes in the second CQI table are all items of 64QAM, or;

and the modulation mode in the second CQI table is partial item of 64QAM, and at least one item except the item with the maximum CQI number corresponding to all the items of 64QAM modulation modes in the second CQI table.

In a fifth possible implementation manner, according to the first aspect, the spectral efficiency of the corresponding item with the smallest CQI number in the items with the modulation scheme higher than 64QAM in the first CQI table is equal to the spectral efficiency of the corresponding item with the largest CQI number in all the items with the modulation scheme 64QAM in the second CQI table; alternatively, the first and second electrodes may be,

the spectral efficiency of T items with the minimum CQI number in the items with the modulation modes higher than 64QAM in the first CQI table is equal to or approximately equal to the spectral efficiency of T items with the maximum CQI number in all the items with the modulation modes of 64QAM in the second CQI table, wherein T is equal to any natural number from 1 to 5.

In a sixth possible implementation manner, according to the first aspect, the spectral efficiency of the entry with the largest CQI number corresponding to the entry with a modulation scheme higher than 64QAM in the first CQI table is:

the spectral efficiency of the item with the maximum CQI number corresponding to all items with the modulation mode of 64QAM in the second CQI table is multiplied by 4/3;

or 8 times the maximum coding rate of the terminal, wherein the maximum coding rate is a positive real number less than 1;

alternatively, 7.4063;

alternatively, 7.432.

In a seventh possible implementation manner, according to the first aspect, the spectral efficiencies of the X entries with the largest CQI numbers in the first CQI table are arranged as an arithmetic progression or an approximately arithmetic progression in the order of the smallest spectral efficiency; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an arithmetic progression according to the sequence of the spectral efficiencies from small to large, which means that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is equal to a constant from the second item of the X items according to the sequence of the spectral efficiencies from small to large; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an approximately equal difference number array according to the sequence of the spectral efficiencies from small to large, and the sequence refers to that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is within the range of subtracting a preset value from a constant and adding the preset value from the constant from the second item in the X items according to the sequence of the spectral efficiencies from small to large; x is an integer greater than 2;

the spectrum efficiency of the corresponding item with the minimum CQI number in the X items with the maximum CQI number in the first CQI table is equal to the spectrum efficiency of the corresponding item with the maximum CQI number in all the items with the maximum modulation mode 64QAM in the second CQI table;

the spectrum efficiency of the corresponding item with the largest CQI number in the X items with the largest CQI numbers in the first CQI table is as follows:

alternatively, 7.4063;

alternatively, 7.432.

In an eighth possible implementation manner, according to the first aspect and any one of the first, second, sixth, and seventh possible implementation manners, the spectral efficiency of the term with a modulation manner higher than 64QAM in the first CQI table includes at least one of the following values:

{5.5547 6.1805 6.8062 7.432}，

{6.1805 6.8062 7.432}，

{5.5547 6.1797 6.8047 7.4297}，

{6.1797 6.8047 7.4297}，

{5.5547 6.1719 6.7891 7.4063}，

{6.1719 6.7891 7.4063}，

{5.5547 6.4934 7.432}，

{6.4934 7.432}，

{5.5547 6.4922 7.4297}，

{6.4922 7.4297}，

{5.5547 6.4805 7.4063}，

{6.4805 7.4063}，

{5.5547 6.4844 7.4063}，

{6.4844 7.4063}，

{5.5547 6.0240 6.4934 6.9627 7.432}，

{6.0234 6.4922 6.9609 7.4297}，

{5.5547 6.0234 6.4922 6.9609 7.4297}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0176 6.4805 6.9434 7.4063}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0156 6.4844 6.9453 7.4063}，

{6.0156 6.4844 6.9453 7.4063}，

{5.5547 5.9302 6.3056 6.6811 7.0565 7.432}，

{5.9302 6.3056 6.6811 7.0565 7.432}，

{5.5547 5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.5547 5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.5547 5.9219 6.2969 6.6641 7.0391 7.4063}，

{5.9219 6.2969 6.6641 7.0391 7.4063}。

in a ninth possible implementation manner, according to the first aspect, a value range of the CQI number in the first CQI table is the same as a value range of the CQI number in the second CQI table.

In a second aspect, a method for notifying an MCS is provided, including:

receiving a first Channel Quality Indication (CQI) number sent by a terminal UE, wherein the first CQI number is determined by the UE according to an acquired first CQI table;

determining a first MCS number according to the first CQI table, the first MCS table and the received first CQI number;

transmitting the determined first MCS number to the UE;

wherein the first CQI table includes:

items with modulation higher than 64 QAM;

the first MCS table includes:

items with modulation higher than 64 QAM;

at least one item of a second MCS table, wherein at least one item of the second MCS table is QPSK, and the at least one item of the second MCS table, wherein at least one item of the second MCS table is QPSK, includes combinations other than the second combination, the second combination is K items with continuous maximum MCS numbers corresponding to QPSK in the second MCS table, and K is equal to 4 or K is a positive integer less than 5 or K is a positive integer; and/or at least one item with a modulation mode of 16QAM in the second MCS table;

the modulation schemes in the second MCS table include only QPSK, 16QAM, and 64 QAM.

In a first possible implementation manner, according to the second aspect, the first CQI table further includes:

at least one item of a second CQI table with a QPSK modulation mode comprises a combination formed by at least one item of the second CQI table with the QPSK modulation mode except a first combination, wherein the first combination is N items with continuous maximum CQI numbers corresponding to the QPSK in the second CQI table, N is equal to 3 or is a positive integer smaller than 4 or is a positive integer; and/or at least one item of which the modulation mode is 16QAM in the second CQI table;

the modulation schemes in the second CQI table include only QPSK, 16QAM, and 64 QAM.

In a second possible implementation manner, according to the second aspect or the first possible implementation manner, the determining the first MCS number according to the obtained first CQI table, the obtained first MCS table, and the received first CQI number includes:

determining a first TBS number and a first MCS number according to the acquired first PRB number, the first CQI table, the first MCS table, the first TBS table and the received first CQI number;

the first PRB number is the PRB number allocated to the UE by the base station; or the first PRB number is a maximum integer less than or equal to a product of the PRB number allocated to the UE and a specific coefficient;

the first TBS table comprises at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number; the first TBS table is a TBS table corresponding to the first MCS table.

In a third possible implementation manner, according to the second possible implementation manner, a value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26, or a value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and a transport block size corresponding to a value range of the TBS number in the first TBS table of 0-C is the same as a transport block size corresponding to a value range of the TBS number in the second TBS table of 0-C, where C is a non-negative integer less than or equal to 26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

In a fourth possible implementation manner, according to the second possible implementation manner, the determining the first TBS number according to the first CQI table, the first PRB number, the first TBS table, and the received first CQI number includes:

determining a first modulation mode and a first spectrum efficiency corresponding to the received first CQI number according to the first CQI table and the received first CQI number;

acquiring the size of a first transmission block transmitted to the UE according to the first PRB number and the first spectrum efficiency;

and obtaining a first TBS number corresponding to the first transport block size and the first PRB number in the first TBS table according to the first TBS table.

In a fifth possible implementation manner, according to any one of the second, third, and fourth possible implementation manners, the first TBS table includes a TBS number Y1, where for each PRB number, a transport block size corresponding to a TBS number Y1 is larger than a transport block size corresponding to a TBS number 25 in the second TBS table and is smaller than a transport block size corresponding to a TBS number 26 in the second TBS table; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

In a sixth possible implementation manner, according to the second, third, and fourth possible implementation manners, the first TBS table includes TBS number Y2, and at least one corresponding to TBS number Y2 in the following table a, where any one includes a PRB number and a transport block size corresponding to the PRB number:

table A

And/or the presence of a gas in the gas,

the first TBS table includes TBS number Y3 and at least one corresponding TBS number Y3 in tables B1, B2, B3 or B4, where any one includes a PRB number and a transport block size corresponding to the PRB number;

table B1

Table B2

Table B3

Table B4

And/or the presence of a gas in the gas,

the first TBS table includes TBS numbers Y4_1-Y4_5, and at least one corresponding to TBS numbers Y4_1-Y4_5 in table C1 or C2, where any one of the TBS numbers includes one PRB number and five transport block sizes corresponding to the PRB number;

table C1

Table C2

In a seventh possible implementation manner, according to any one of the first to sixth possible implementation manners, the entry in the second CQI table that at least one modulation scheme is QPSK includes:

In an eighth possible implementation manner, according to any one of the first to sixth possible implementation manners, an item in the second CQI table, where at least one modulation scheme is 16QAM, includes:

In a ninth possible implementation manner, according to any one of the first to eighth possible implementation manners, the first CQI table further includes:

at least one modulation mode in the second CQI table is an item of 64 QAM.

In a tenth possible implementation manner, according to the ninth possible implementation manner, the item in which the at least one modulation scheme is 64QAM includes:

the modulation modes in the second CQI table are all items of 64QAM, or;

In an eleventh possible implementation manner, according to any one of the first to tenth possible implementation manners, a spectral efficiency of an item with a minimum CQI number, among items with a modulation manner higher than 64QAM, in the first CQI table is equal to a spectral efficiency of an item with a maximum CQI number, among all items with a modulation manner of 64QAM, in the second CQI table; alternatively, the first and second electrodes may be,

In a twelfth possible implementation manner, according to any one of the first to eleventh possible implementation manners, a value range of the CQI number in the first CQI table is the same as a value range of the CQI number in the second CQI table.

In a thirteenth possible implementation manner, according to the second aspect or any one of the first to fourth possible implementation manners, the entry, in the second MCS table, of which at least one modulation scheme is QPSK includes:

the modulation mode in the second MCS table is a partial item of QPSK, and the MCS numbers corresponding to the partial item are equally spaced; alternatively, the first and second electrodes may be,

the modulation mode in the second MCS table is a partial item of QPSK, and the MCS numbers corresponding to the partial item are not at equal intervals; alternatively, the first and second electrodes may be,

the modulation mode in the second MCS table is a partial item of QPSK, the MCS numbers corresponding to the partial item are discontinuous, and at least one item except the item with the maximum MCS number in all the items of QPSK modulation mode in the second MCS table; alternatively, the first and second electrodes may be,

the modulation mode in the second MCS table is partial item of QPSK, and the MCS numbers corresponding to the partial item are continuous, and at least one item except the item with the maximum MCS number in all the items of QPSK modulation mode in the second MCS table.

In a fourteenth possible implementation manner, according to any one of the first to fourth possible implementation manners, the item, in the second MCS table, of which at least one modulation scheme is 16QAM includes:

all the modulation modes in the second MCS table are 16QAM items; alternatively, the first and second electrodes may be,

partial items of which the modulation modes are 16QAM in the second MCS table, wherein MCS numbers corresponding to the partial items are at equal intervals; alternatively, the first and second electrodes may be,

the modulation mode in the second MCS table is a partial item of 16QAM, and the MCS numbers corresponding to the partial item are not at equal intervals; alternatively, the first and second electrodes may be,

the modulation mode in the second MCS table is a partial item of 16QAM, the MCS numbers corresponding to the partial item are discontinuous, and at least one item except the item with the maximum second MCS number in all the items of the second MCS table with the modulation mode of 16QAM is removed;

the modulation mode in the second MCS table is a partial item of 16QAM, the MCS numbers corresponding to the partial item are continuous, and at least one item except the item with the maximum MCS number in all the items of the second MCS table with the modulation mode of 16QAM is removed;

and the modulation mode in the second MCS table is partial item of 16QAM, and at least one item except the item with the maximum and minimum MCS number in all the items of 16QAM modulation modes in the second MCS table.

In a fifteenth possible implementation manner, according to the second aspect or any one of the first to fourth, thirteenth and fourteenth possible implementation manners, the first MCS table further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

In a sixteenth possible implementation manner, according to the fifteenth possible implementation manner, the entry in the second MCS table, where at least one modulation scheme is 64QAM, includes:

all the modulation modes in the second MCS table are 64QAM items; alternatively, the first and second electrodes may be,

part of items of which the modulation modes are 64QAM in the second MCS table, and at least one item except the item with the minimum MCS number in all the items of which the modulation modes are 64QAM in the second MCS table; alternatively, the first and second electrodes may be,

and the modulation mode in the second MCS table is partial item of 64QAM, and at least one item except the item with the maximum MCS number in all the items of 64QAM modulation mode in the second MCS table.

In a seventeenth possible implementation manner, according to the fifteenth or sixteenth possible implementation manner, the TBS number of the corresponding entry with the lowest MCS number in all entries of the first MCS table with modulation schemes higher than 64QAM is the same as the TBS number of the entry with the highest MCS number in all entries of the second MCS table with modulation schemes of 64 QAM; alternatively, the first and second electrodes may be,

the TBS numbers of the R items with the minimum MCS numbers in the items of the first MCS table with the modulation mode higher than 64QAM are equal to the TBS numbers of the R items with the maximum MCS numbers in all the items of the second MCS table with the modulation mode of 64QAM and the MCS numbers not greater than 27; wherein R is a natural number.

In an eighteenth possible implementation manner, according to the second aspect or any one of the first to the fourth and the thirteenth to the seventeenth possible implementation manners, a value range of the MCS number in the first MCS table is the same as a value range of the MCS number in the second MCS table.

In a nineteenth possible implementation manner, according to the second aspect or any one of the first to fourth, sixth, thirteenth to eighteenth possible implementation manners, the first MCS table further includes at least one of the following tables D1, D2, D3, D4, or D5, where any one includes one MCS number, and a modulation order and a TBS number corresponding to the MCS number:

table D1

Table D2

Table D3

Table D4

Table D5

In a third aspect, a method for notifying an MCS is provided, including:

receiving a first MCS number sent by a base station; the first MCS number is determined by the base station according to a first MCS table;

determining a modulation order and a coding block size according to the first MCS table and the received first MCS number;

wherein the first MCS table comprises:

items with modulation higher than 64 QAM;

at least one item of a second MCS table, wherein at least one item of the second MCS table is QPSK, and the at least one item of the second MCS table, wherein the at least one item of the second MCS table, the at least one item of the second MCS table; and/or at least one item with a modulation mode of 16QAM in the second MCS table;

In a first possible implementation manner, according to the third aspect, the determining a modulation order and a coding block size according to the first MCS table and the received first MCS number includes:

determining a first TBS number and a modulation order according to the first MCS table and the received first MCS number;

determining the size of a coding block according to the first TBS number, the first PRB number and the first TBS table;

In a second possible implementation, according to the first possible implementation,

the value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26, or the value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and the size of a transport block corresponding to the value range of the TBS number in the first TBS table being 0-C is the same as the size of a transport block corresponding to the value range of the TBS number in the second TBS table being 0-C, where C is a non-negative integer less than or equal to 26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

In a third possible implementation manner, according to the first or second possible implementation manner, the first TBS table includes TBS number Y1, where for each PRB number, a transport block size corresponding to TBS number Y1 is larger than a transport block size corresponding to TBS number 25 in the second TBS table and is smaller than a transport block size corresponding to TBS number 26 in the second TBS table; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

In a fourth possible implementation manner, according to the first or second possible implementation manner, the first TBS table includes TBS number Y2 and at least one corresponding TBS number Y2 in the following table a, where any one includes a PRB number and a transport block size corresponding to the PRB number:

table A

And/or the presence of a gas in the gas,

table B1

Table B2

Table B3

Table B4

And/or the presence of a gas in the gas,

table C1

Table C2

In a fifth possible implementation manner, according to the fourth aspect or any one of the first to the second possible implementation manners, the entry, in the second MCS table, of which at least one modulation scheme is QPSK includes:

In a sixth possible implementation manner, according to the fourth aspect or any one of the first to the second possible implementation manners, the at least one item with a modulation scheme of 16QAM in the second MCS table includes:

the modulation mode in the second MCS table is a partial item of 16QAM, the MCS numbers corresponding to the partial item are discontinuous, and at least one item except the item with the maximum second MCS number in all the items of the second MCS table with the modulation mode of 16QAM is removed; alternatively, the first and second electrodes may be,

the modulation mode in the second MCS table is a partial item of 16QAM, the MCS numbers corresponding to the partial item are continuous, and at least one item except the item with the maximum MCS number in all the items of the second MCS table with the modulation mode of 16QAM is removed; alternatively, the first and second electrodes may be,

In a seventh possible implementation manner, according to the fourth aspect or any one of the first six possible implementation manners, the first MCS table further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

In an eighth possible implementation manner, according to the seventh possible implementation manner, the item in the second MCS table in which at least one modulation scheme is 64QAM includes:

In a ninth possible implementation manner, according to the seventh or eighth possible implementation manner, the item that at least one modulation scheme in the second MCS table is 64QAM includes: :

the TBS number of the corresponding item with the lowest MCS number in all the items with the modulation modes higher than 64QAM in the first MCS table is the same as the TBS number of the item with the highest MCS number in all the items with the modulation modes of 64QAM in the second MCS table; alternatively, the first and second electrodes may be,

the TBS numbers of the corresponding R entries with the smallest MCS number among the entries of the first MCS table with a modulation scheme higher than 64QAM may be equal to the TBS numbers of the R entries with the largest MCS number among all the entries of the second MCS table with a modulation scheme of 64QAM and an MCS number not greater than 27; wherein R is a natural number.

In a tenth possible implementation manner, according to the fourth aspect or any one of the first nine possible implementation manners, a value range of the MCS number in the first MCS table is the same as a value range of the MCS number in the second MCS table.

In an eleventh possible implementation manner, according to the fourth aspect or any one of the first to tenth possible implementation manners, the first MCS table further includes at least one of the following table D1, table D2, table D3, table D4, or table D5, where any one of the following tables includes one MCS number, and a modulation order and a TBS number corresponding to the MCS number:

table D1

Table D2

Table D3

Table D4

Table D5

In a fourth aspect, an apparatus for notifying CQI is provided, including:

an obtaining module, configured to obtain a first CQI table;

an acquisition module I: the first CQI table is used for acquiring a first CQI number according to the acquisition module;

a sending module: the first CQI number is used for sending the first CQI number acquired by the first acquisition module to a base station; so that the base station determines a first Modulation and Coding Scheme (MCS) number according to the first CQI number;

the first CQI table acquired by the acquisition module includes:

In a first possible implementation manner, according to the fourth aspect, the entry that at least one modulation scheme in the second CQI table in the first CQI table acquired by the acquisition module is QPSK includes:

In a second possible implementation manner, according to the fourth aspect, the item, in the first CQI table, obtained by the obtaining module, of the second CQI table, where at least one modulation scheme is 16QAM includes:

In a third possible implementation manner, according to the fourth aspect or any one of the first two possible implementation manners, the first CQI table acquired by the acquiring module further includes:

at least one modulation mode in the second CQI table is an item of 64 QAM.

the modulation modes in the second CQI table are all items of 64QAM, or;

In a fifth possible implementation manner, according to the fourth aspect, the spectrum efficiency of the corresponding item with the smallest CQI number in the items with the modulation scheme higher than 64QAM in the first CQI table obtained by the obtaining module is equal to the spectrum efficiency of the corresponding item with the largest CQI number in all the items with the modulation scheme 64QAM in the second CQI table; alternatively, the first and second electrodes may be,

In a sixth possible implementation manner, according to the fourth aspect, the spectral efficiency of the corresponding item with the largest CQI number in the items with the modulation scheme higher than 64QAM in the first CQI table is:

alternatively, 7.4063;

alternatively, 7.432.

In a seventh possible implementation manner, according to the fourth aspect, the spectral efficiencies of the X entries with the largest CQI numbers in the first CQI table are arranged as an arithmetic progression or an approximately arithmetic progression in the order of the smallest spectral efficiency; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an arithmetic progression according to the sequence of the spectral efficiencies from small to large, which means that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is equal to a constant from the second item of the X items according to the sequence of the spectral efficiencies from small to large; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an approximately equal difference number array according to the sequence of the spectral efficiencies from small to large, and the sequence refers to that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is within the range of subtracting a preset value from a constant and adding the preset value from the constant from the second item in the X items according to the sequence of the spectral efficiencies from small to large; x is an integer greater than 2;

alternatively, 7.4063;

alternatively, 7.432.

In an eighth possible implementation manner, in the fourth aspect or any one of the first to the second, the sixth and the seventh possible implementation manners, the spectral efficiency of the item with the modulation scheme higher than 64QAM in the first CQI table includes at least one of the following values:

{5.5547 6.1805 6.8062 7.432}，

{6.1805 6.8062 7.432}，

{5.5547 6.1797 6.8047 7.4297}，

{6.1797 6.8047 7.4297}，

{5.5547 6.1719 6.7891 7.4063}，

{6.1719 6.7891 7.4063}，

{5.5547 6.4934 7.432}，

{6.4934 7.432}，

{5.5547 6.4922 7.4297}，

{6.4922 7.4297}，

{5.5547 6.4805 7.4063}，

{6.4805 7.4063}，

{5.5547 6.4844 7.4063}，

{6.4844 7.4063}，

{5.5547 6.0240 6.4934 6.9627 7.432}，

{6.0234 6.4922 6.9609 7.4297}，

{5.5547 6.0234 6.4922 6.9609 7.4297}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0176 6.4805 6.9434 7.4063}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0156 6.4844 6.9453 7.4063}，

{6.0156 6.4844 6.9453 7.4063}，

{5.5547 5.9302 6.3056 6.6811 7.0565 7.432}，

{5.9302 6.3056 6.6811 7.0565 7.432}，

{5.5547 5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.5547 5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.5547 5.9219 6.2969 6.6641 7.0391 7.4063}，

{5.9219 6.2969 6.6641 7.0391 7.4063}。

in a ninth possible implementation manner, according to the fourth aspect, the value range of the CQI number in the first CQI table acquired by the acquisition module is the same as the value range of the CQI number in the second CQI table.

In a fifth aspect, an apparatus for notifying an MCS is provided, including:

an obtaining module, configured to obtain a first CQI table and a first MCS table;

a receiving module: the CQI number is determined by the UE according to a first CQI table;

a determination module: the receiving module is used for receiving a first CQI form acquired by the acquiring module, a first MCS form acquired by the acquiring module and a first CQI number received by the receiving module;

a sending module: means for transmitting the determined first MCS number to the UE;

wherein, the first CQI table acquired by the acquisition module includes:

items with modulation higher than 64 QAM;

the first MCS table acquired by the acquiring module includes:

items with modulation higher than 64 QAM;

In a first possible implementation manner, according to the fifth aspect, the first CQI table further includes:

In a second possible implementation manner, according to the fifth aspect or the first possible implementation manner, the determining module is specifically configured to:

determining a first TBS number and a first MCS number according to the acquired first PRB number, the first CQI table acquired by the acquisition module, the first MCS table acquired by the acquisition module, the first TBS table and the received first CQI number;

In a third possible implementation form, according to the second possible implementation form,

In a fourth possible implementation manner, according to the second possible implementation manner, the determining module includes:

a first determination sub-module: the first modulation mode and the first spectrum efficiency corresponding to the received first CQI number are determined according to the first CQI table acquired by the acquisition module and the received first CQI number;

a second determination sub-module: the UE is used for acquiring the size of a first transmission block transmitted to the UE according to the first PRB number and the first spectrum efficiency;

In a fifth possible implementation manner, according to any one of the second to fourth possible implementation manners, the first TBS table includes a TBS number Y1, where for each PRB number, a transport block size corresponding to a TBS number Y1 is larger than a transport block size corresponding to a TBS number 25 in the second TBS table and is smaller than a transport block size corresponding to a TBS number 26 in the second TBS table; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

In a sixth possible implementation manner, according to any one of the second to fourth possible implementation manners, the first TBS table includes TBS number Y2 and at least one corresponding TBS number Y2 in the following table a, where any one includes a PRB number and a transport block size corresponding to the PRB number:

table A

And/or the presence of a gas in the gas,

table B1

Table B2

Table B3

Table B4

And/or the presence of a gas in the gas,

table C1

Table C2

In a seventh possible implementation manner, according to any one of the first six possible implementation manners, the entry in the second CQI table that at least one modulation manner is QPSK includes:

In an eighth possible implementation manner, according to any one of the first six possible implementation manners, an item that at least one modulation scheme in the second CQI table in the first CQI table acquired by the acquisition module is 16QAM includes:

In a ninth possible implementation manner, according to any one of the first eight possible implementation manners, the first CQI table acquired by the acquisition module further includes:

at least one modulation mode in the second CQI table is an item of 64 QAM.

the modulation modes in the second CQI table are all items of 64QAM, or;

In an eleventh possible implementation manner, according to any one of the first ten possible implementation manners, the spectrum efficiency of an item with the smallest CQI number, among items with a modulation manner higher than 64QAM, in the first CQI table acquired by the acquisition module is equal to the spectrum efficiency of an item with the largest CQI number, among all items with a modulation manner of 64QAM, in the second CQI table; alternatively, the first and second electrodes may be,

In a twelfth possible implementation manner, according to any one of the preceding eleven possible implementation manners, the value range of the CQI number in the first CQI table acquired by the acquisition module is the same as the value range of the CQI number in the second CQI table.

In a thirteenth possible implementation manner, according to the fifth aspect or any one of the first four possible implementation manners, the entry, obtained by the obtaining module, of the QPSK modulation scheme in the second MCS table of the first MCS table includes:

In a fourteenth possible implementation manner, according to the fifth aspect or any one of the first four possible implementation manners, the item, obtained by the obtaining module, of the second MCS table in the first MCS table that at least one modulation scheme is 16QAM includes:

In a fifteenth possible implementation manner, according to the fifth aspect or any one of the first to fourth, thirteenth, and fourteenth possible implementation manners, the first MCS table acquired by the acquiring module further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

In a seventeenth possible implementation manner, according to the fifteenth or sixteen possible implementation manners, the TBS number of the corresponding lowest MCS-numbered entry among all entries in the first MCS table, in which the modulation scheme is higher than 64QAM, acquired by the acquisition module is the same as the TBS number of the highest MCS-numbered entry among all entries in the second MCS table, in which the modulation scheme is 64 QAM; alternatively, the first and second electrodes may be,

In an eighteenth possible implementation manner, according to the fifth aspect or any one of the first four possible implementation manners, the thirteenth possible implementation manner to the seventeenth possible implementation manner, the value range of the MCS number in the first MCS table acquired by the acquiring module is the same as the value range of the MCS number in the second MCS table.

In a nineteenth possible implementation manner, according to the fifth aspect or any one of the first four possible implementation manners, the sixth implementation manner, the thirteenth implementation manner to the eighteenth implementation manner, the first MCS table further includes at least one of the following tables D1, D2, D3, D4, or D5, where any one includes one MCS number, and a modulation order and a TBS number corresponding to the MCS number:

table D1

Table D2

Table D3

Table D4

Table D5

In a sixth aspect, an apparatus for notifying an MCS is provided, including:

an obtaining module, configured to obtain a first MCS table;

a receiving module: the first MCS number is used for receiving the base station to send; the first MCS number is determined by the base station according to the first MCS table acquired by the acquisition module;

a determination module: the modulation order and the coding block size are determined according to the first MCS table acquired by the acquisition module and the first MCS number received by the receiving module;

wherein, the first MCS table acquired by the acquiring module includes:

items with modulation higher than 64 QAM;

In a first possible implementation manner, according to a sixth aspect, the determining module includes:

a first determination sub-module: the base station is used for determining a first TBS number and a modulation order according to the first MCS table acquired by the acquisition module and the received first MCS number;

a second determination sub-module: the code block size is determined according to the first TBS number, the first PRB number and the first TBS table;

In a second possible implementation manner, according to the first possible implementation manner, a value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26, or a value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and a transport block size corresponding to a value range of the TBS number in the first TBS table of 0-C is the same as a transport block size corresponding to a value range of the TBS number in the second TBS table of 0-C, where C is a non-negative integer less than or equal to 26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

In a fourth possible implementation manner, according to the first or second possible implementation manner, the first TBS table includes TBS number Y2 and at least one corresponding TBS number Y2 in the following table a, where any one includes one PRB number and one transport block size corresponding to the PRB number:

table A

And/or the presence of a gas in the gas,

table B1

Table B2

Table B3

Table B4

And/or the presence of a gas in the gas,

table C1

Table C2

In a fifth possible implementation manner, according to the sixth aspect and any one of the first two possible implementation manners, the entry, in the second MCS table, of which at least one modulation scheme is QPSK includes:

In a sixth possible implementation manner, according to the sixth aspect and any one of the first two possible implementation manners, the item, in the second MCS table, of which at least one modulation scheme is 16QAM includes:

In a seventh possible implementation manner, according to the sixth aspect or any one of the first six possible implementation manners, the first MCS table acquired by the acquiring module further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

In a ninth possible implementation manner, according to the seventh or eighth possible implementation manner,

the TBS number of the corresponding item with the lowest MCS number in all items of which the modulation mode is higher than 64QAM in the first MCS table acquired by the acquisition module is the same as the TBS number of the item with the highest MCS number in all items of which the modulation mode is 64QAM in the second MCS table; alternatively, the first and second electrodes may be,

In a tenth possible implementation manner, according to the sixth aspect or the first nine possible implementation manners, the value range of the MCS number in the first MCS table acquired by the acquiring module is the same as the value range of the MCS number in the second MCS table.

In an eleventh possible implementation manner, according to the sixth aspect or the tenth possible implementation manner, the first MCS table further includes at least one of the following tables D1, D2, D3, D4, or D5, where any one of the tables includes an MCS number, and a modulation order and a TBS number corresponding to the MCS number:

table D1

Table D2

Table D3

Table D4

Table D5

A seventh aspect provides an apparatus for notifying channel quality indicator CQI, including:

the device comprises a memory and a processor connected with the memory, and further comprises a transmitter;

wherein the memory stores a set of program codes, and the processor is configured to call the program codes stored in the memory to execute the method of the first aspect;

the transmitter is configured to send a first CQI number obtained by the processor invoking the program code stored in the memory and executing the method described in the first aspect and any possible implementation manner thereof.

In an eighth aspect, an apparatus for notifying a modulation and coding scheme MCS is provided, including:

the device comprises a memory and a processor connected with the memory, and further comprises a transmitter and a receiver;

wherein a set of program code is stored in the memory and the processor is configured to call the program code stored in the memory to perform the method as claimed in the second aspect and any possible implementation thereof;

the receiver is configured to receive a first CQI number sent by a UE, and the transmitter is configured to send a first MCS number obtained by the processor invoking the program code stored in the memory and performing the method according to the second aspect and any possible implementation thereof.

In a ninth aspect, an apparatus for notifying a Modulation and Coding Scheme (MCS) is provided, including: the device comprises a memory and a processor connected with the memory, and further comprises a receiver;

wherein the memory stores a set of program codes and the processor is configured to call the program codes stored in the memory to perform the method of the third aspect and any possible implementation manner thereof;

the receiver is used for receiving a first MCS number sent by a base station.

The invention provides a method and a device for notifying a channel quality indication and a modulation coding scheme, which support UE to select a modulation mode with a modulation mode higher than 64QAM and notify a base station by adopting a method of sending CQI number, and simultaneously support the base station to select a modulation mode with a modulation mode higher than 64QAM and notify the UE by adopting a method of sending MCS number, thereby improving the system performance.

The embodiment of the invention provides a method and a device for notifying a channel quality indication and a modulation coding scheme, and can also support UE to select lower spectrum efficiency and notify a base station by adopting a method for sending CQI numbers, and simultaneously support the base station to select a lower transmission block size and notify the UE by adopting a method for sending MCS numbers, so that the UE can be ensured to adapt to a sudden low signal-to-noise ratio scene when using a high-order modulation mode, namely the UE can be ensured to adapt to the drastic change of the signal-to-noise ratio.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a CQI notification method according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an MCS notification method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another MCS notification method according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating another MCS notification method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a CQI notification apparatus according to an embodiment of the present invention;

FIG. 6 is a diagram of an MCS notification apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an apparatus for notifying another MCS according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an apparatus for notifying another MCS according to an embodiment of the present invention;

fig. 9 is a schematic diagram of another apparatus for notifying CQI according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of an apparatus for notifying another MCS according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of an apparatus for notifying another MCS according to an embodiment of the present invention;

fig. 12 is a schematic diagram of another MCS notification apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The adaptive flow of the Physical Downlink Shared Channel (PDSCH) is as follows:

first, a User Equipment (UE) estimates Channel Information for measuring Channel State Information (CSI), and then, the UE calculates a Signal to Interference plus Noise Ratio (SINR) based on an optimal Rank Indication (RI) and/or a Precoding Matrix Indication (PMI) through the Channel Information, and then, the UE obtains a corresponding Channel Quality Indication (CQI) according to the SINR, and reports the CQI to a base station.

The modulation order and the modulation scheme described in the present invention correspond to each other, and for example, if the modulation scheme is Quadrature Phase Shift Keying (QPSK), the modulation order is 2, if the modulation scheme is 16QAM, the modulation order is 4, if the modulation scheme is 64QAM, the modulation order is 6, and if the modulation scheme is 256QAM, the modulation order is 8.

A detailed description is given below of a CQI notification method according to an embodiment of the present invention with reference to the accompanying drawings.

As shown in fig. 1, the CQI reporting method includes the following steps:

s101, the UE acquires a first CQI number according to the acquired first CQI table.

The first CQI table may be predefined by a protocol, and preset by the UE according to a protocol specification or pre-stored by the UE; or the UE is selected from at least two predefined tables according to the downlink channel state; or the base station may notify the UE, specifically, the method for the base station to notify the UE may be that the base station selects one of at least two predefined tables according to the uplink channel state or the downlink channel state and notifies the selected one of the at least two predefined tables to the UE. The CQI table is used to describe the mapping relationship between the CQI number and the entry, the mapping relationship of the CQI table in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the representation form of the CQI table in the present invention includes but is not limited to this, that is, the CQI table may have various combinations, as long as the mapping relationship between the CQI number and the entry can be embodied, which all belong to the protection scope of the present invention.

Specifically, the UE determines a first spectral efficiency according to the measured first SINR, and then obtains a first CQI number corresponding to the first spectral efficiency according to the first spectral efficiency and a first CQI table. Wherein the first CQI table is pre-stored by the UE.

The first CQI table may include:

items with modulation higher than 64 QAM;

at least one item of the second CQI table with the QPSK modulation scheme may include a combination, except for the first combination, of combinations formed by at least one item of the second CQI table with the QPSK modulation scheme, where the first combination is N items of which CQI numbers corresponding to QPSK in the second CQI table are continuously the largest, where N is equal to 3 or is a positive integer less than 4 or is a positive integer; and/or at least one item of which the modulation mode is 16QAM in the second CQI table;

the modulation schemes in the entries in the second CQI table may include only QPSK, 16QAM, and 64 QAM.

That is, the first CQI table includes an item having a modulation scheme higher than 64 QAM; the first CQI table may further include at least one item of which the modulation scheme is QPSK in the second CQI table, and the item of which the modulation scheme is QPSK in the first CQI table cannot be only N items of which the CQI numbers corresponding to the item of which the modulation scheme is QPSK in the second CQI table are continuously the largest, where N may be equal to 3 or N may be a positive integer less than 4 or N may be a positive integer; and/or the first CQI table further comprises at least one item with a modulation mode of 16QAM in the second CQI table.

Furthermore, the values of N are only examples of the present invention, and the present invention is not limited thereto.

The modulation schemes in the entries in the second CQI table include only QPSK, 16QAM, and 64 QAM; the entries in the first CQI table may refer to a modulation scheme, a coding rate, and a spectrum efficiency corresponding to each CQI number in the first CQI table; the item in the second CQI table refers to a modulation mode, a coding rate, and a spectrum efficiency corresponding to each CQI number in the second CQI table, and of course, the item in the present invention may be set according to uplink state information or downlink state information, and the items in the first CQI table and the second CQI table are only examples of the present invention, which is not limited thereto.

The combination is a combination including at least one item of a QPSK modulation scheme in the second CQI table. Taking the second CQI table shown in table 1 as an example, the combinations formed by the QPSK modulation scheme of at least one of the second CQI tables are totally 26-1 to 63. For example, the combination may be a combination of entries corresponding to CQI number 6 in the second CQI table, a combination of entries corresponding to CQI numbers 4,5, and 6 in the second CQI table, a combination of entries corresponding to CQI numbers 3, 5, and 6 in the second CQI table, or the like.

Specifically, there may be three first CQI tables as follows:

first CQI table: only including the item that the modulation mode is QPSK and the modulation mode is higher than 64 QAM;

second first CQI table: only items with the modulation mode of 16QAM and the modulation mode higher than 64QAM are included;

third first CQI table: only items with modulation schemes of QPSK, 16QAM and modulation schemes higher than 64QAM are included.

There may be various first CQI tables in the present invention, and the three first CQI tables are only examples for helping understanding of the present invention, and the present invention is not limited thereto.

For ease of understanding, the following CQI table (i.e., the second CQI table) is exemplified:

TABLE 1

The first CQI table includes an item with a modulation scheme higher than 64QAM, and for example, the item with the modulation scheme higher than 64QAM may be one item or multiple items.

For example, the modulation scheme of the item that is included in the first CQI table and is higher than 64QAM may be 128QAM and/or 256QAM, and if the first CQI table only includes an item of one modulation scheme, the modulation scheme of the item may be any one of 128QAM, 256QAM, or other modulation schemes with higher modulation schemes, and if the first CQI table includes an item of multiple modulation schemes, the multiple modulation schemes included in the first CQI table may be any one of 128QAM, 256QAM, or other modulation schemes with higher modulation schemes, or may be any multiple of 128QAM, 256QAM, or other modulation schemes with higher modulation schemes.

For example, the first CQI table may include the following items with modulation schemes higher than 64 QAM:

TABLE 2

It should be noted that, in order to reduce the change to the prior art in the specific implementation process, it is preferable that the range of the CQI numbers in the first CQI table and the range of the CQI numbers in the second CQI table are the same, and specifically, may be 0 to 15, and of course, the range of the CQI numbers in the first CQI table may also be larger than the range of the CQI numbers in the second CQI table, for example, the range of the CQI numbers in the first CQI table may also be 0 to 20. The CQI number in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the scope of the CQI number in the present invention is not limited thereto.

First CQI table: the first CQI table includes only entries with QPSK modulation and higher than 64QAM modulation.

The item of the first CQI table with a modulation scheme higher than 64QAM may be one item, or may be multiple items, and each item of the first CQI table with a modulation scheme higher than 64QAM includes a modulation scheme, a coding rate, and a spectral efficiency, and has a corresponding CQI number.

The first CQI table may further include partial entries in the second CQI table that the modulation scheme is QPSK, that is, partial entries in 6 entries in the second CQI table that the modulation schemes corresponding to CQI numbers 1 to 6 are QPSK (that is, in table 1), and the entries in the first CQI table that the modulation scheme is QPSK are not N entries in the second CQI table that the corresponding CQI numbers in the entries in the modulation scheme that is QPSK are continuously the largest, where N is equal to 3. That is to say: the entries in the first CQI table with the QPSK modulation scheme cannot be only the entries in the second CQI table with the CQI numbers 4,5, and 6.

Or, the first CQI table may further include partial entries in the second CQI table, where the modulation scheme is QPSK, that is, partial entries in 6 entries in the second CQI table, where the modulation schemes of CQIs numbered 1 to 6 are QPSK, and the entries in the first CQI table, where the modulation scheme is QPSK, are not N entries in the second CQI table, where the CQI numbers are continuously the largest, where N is a positive integer and is less than 4, that is, N may be equal to 1,2, 3;

if N is equal to 1, the entry of the first CQI table with the QPSK modulation scheme cannot be the only entry corresponding to the CQI number 6 in the second CQI table, or,

if N is equal to 2, the entries of the first CQI table with the QPSK modulation scheme cannot be only the entries of the second CQI table with the CQI numbers 5 and 6, or,

if N is equal to 3, the entries of the first CQI table with the QPSK modulation scheme cannot be only the entries corresponding to CQI numbers 4,5, and 6 in the second CQI table.

Or, the first CQI table further includes partial entries in the second CQI table that the modulation scheme is QPSK, that is, partial entries in 6 entries in the second CQI table that the modulation schemes corresponding to CQI numbers 1 to 6 are QPSK, and the entries in the first CQI table that the modulation scheme is QPSK are not N entries in the second CQI table that the corresponding CQI numbers are continuously the largest, where N is a positive integer. That is to say: the value range of N can be 1-5;

if N is equal to 3, the entries of the first CQI table with the QPSK modulation scheme cannot be only the entries of the second CQI table with the CQI numbers 4,5, and 6, or,

if N is equal to 4, the entries of the first CQI table with the QPSK modulation scheme cannot be only the entries of the second CQI table with the CQI numbers 3, 4,5, and 6, or,

if N is equal to 5, the entries of the first CQI table with the QPSK modulation scheme cannot be only the entries corresponding to the CQI numbers 2, 3, 4,5, and 6 in the second CQI table.

Or, the entries of the first CQI table with the QPSK modulation scheme include partial entries of the second CQI table with the QPSK modulation scheme, and CQI numbers corresponding to the partial entries are equally spaced.

For example, if the entry of the first CQI table with the QPSK modulation scheme includes 3 entries of the second CQI table with the QPSK modulation scheme, the entry of the first CQI table with the QPSK modulation scheme may include entries corresponding to CQI numbers 1, 3, and 5 in the second CQI table, and the entry of the first CQI table with the QPSK modulation scheme may also include entries corresponding to CQI numbers 2, 4, and 6 in the second CQI table.

Or, the entries of the first CQI table with the QPSK modulation scheme include partial entries of the second CQI table with the QPSK modulation scheme, and CQI numbers corresponding to the partial entries are not equally spaced.

For example, if the entry of the first CQI table with the QPSK modulation scheme includes 3 entries of the second CQI table with the QPSK modulation scheme, the entry of the first CQI table with the QPSK modulation scheme may include entries corresponding to CQI numbers 1, 4, and 6 in the second CQI table, or the entry of the first CQI table with the QPSK modulation scheme may also include entries corresponding to CQI numbers 2,5, and 6 in the second CQI table;

or, if the item of the first CQI table with the QPSK modulation scheme includes 4 items of the second CQI table with the QPSK modulation scheme, the item of the first CQI table with the QPSK modulation scheme may include items corresponding to CQI numbers 1, 3, 4, and 6 in the second CQI table, or the item of the first CQI table with the QPSK modulation scheme may also include items corresponding to CQI numbers 1,2, 4, and 6 in the second CQI table;

or, if the entry of the first CQI table with the QPSK modulation scheme includes 5 entries of the second CQI table with the QPSK modulation scheme, the entry of the first CQI table with the QPSK modulation scheme may include entries corresponding to CQI numbers 1,2, 3, 4, and 6 in the second CQI table.

Or, the item of the first CQI table with the QPSK modulation scheme includes a partial item of the second CQI table with the QPSK modulation scheme, and the CQI number corresponding to the partial item is discontinuous, and at least one item of the second CQI table with the maximum CQI number is excluded from all items of the second CQI table with the QPSK modulation scheme.

For example, the entries of the first CQI table with the QPSK modulation scheme may include entries corresponding to CQI numbers 1 and 3 in the second CQI table, and the entries of the first CQI table with the QPSK modulation scheme may also include entries corresponding to CQI numbers 2, 4, and 5 in the second CQI table.

Or, the item of the first CQI table with the QPSK modulation scheme includes a partial item of the second CQI table with the QPSK modulation scheme, and the CQI numbers corresponding to the partial items are consecutive, and at least one item of the CQI tables is not included in all items of the second CQI table with the QPSK modulation scheme, which have the largest CQI number.

For example, the entries of the first CQI table with the QPSK modulation scheme may include entries corresponding to CQI numbers 2, 3, and 4 in the second CQI table, and the entries of the first CQI table with the QPSK modulation scheme may also include entries corresponding to CQI numbers 2, 3, 4, and 5 in the second CQI table.

Second first CQI table: the first CQI table includes only entries with a modulation of 16QAM and a modulation above 64 QAM.

The first CQI table further includes all items of which modulation schemes are 16QAM in the second CQI table.

Illustratively, the first CQI table further includes 3 entries of a CQI number of 7-9 corresponding to an entry of a second CQI table having a modulation scheme of 16QAM, where the entry corresponds to the modulation scheme of 16 QAM.

Or, specifically, the first CQI table further includes a partial item of the second CQI table whose modulation scheme is 16QAM, and at least one item of the second CQI table except for the item of the second CQI table whose modulation scheme is 16QAM, whose corresponding CQI number is the smallest.

For example, the item of the first CQI table with the modulation scheme of 16QAM may further include items corresponding to CQI numbers 8 and 9 in the second CQI table, and the item of the first CQI table with the modulation scheme of 16QAM may also further include items corresponding to CQI numbers 8 or 9 in the second CQI table.

Third first CQI table: and adding an item with a modulation mode of 16QAM on the basis of the first CQI table to obtain a third CQI table. The third first CQI table only includes entries for modulation schemes QPSK, 16QAM, and modulation schemes higher than 64 QAM. The item of the modulation scheme 16QAM included in the third first CQI table and the item of the modulation scheme 16QAM included in the second first CQI table may be the same.

Specifically, the first CQI table further includes all items of which modulation schemes are 16QAM in the second CQI table.

Further, the first CQI table further includes at least one item in the second CQI table, where the modulation scheme is 64 QAM.

That is, on the basis of the first CQI table, an item with a modulation scheme of 64QAM is added to obtain a fourth CQI table; at this time, the fourth CQI table includes items that the modulation scheme is QPSK, a modulation scheme higher than 64QAM, and 64 QAM;

or on the basis of the second first CQI table, a table added with an item with a modulation mode of 64QAM is a fifth first CQI table; at this time, the fifth first CQI table includes items of a modulation scheme higher than 64QAM, 16QAM, and 64 QAM;

or, on the basis of the third first CQI table, a table added with an item of which the modulation mode is 64QAM is a sixth first CQI table; in this case, the sixth first CQI table includes items of a modulation scheme higher than 64QAM, QPSK, 16QAM, and 64 QAM.

The item of the fourth, fifth or sixth first CQI table with the modulation scheme of 64QAM is as follows:

specifically, the first CQI table further includes all items of the second CQI table whose modulation schemes are 64 QAM.

For example, the second CQI number corresponding to the item with the modulation scheme of 64QAM in the second CQI table is 10 to 15, and the corresponding modulation scheme is 6 items of 64 QAM.

Or, specifically, the first CQI table further includes a partial item of the second CQI table whose modulation scheme is 64QAM, and at least one item of the second CQI table except for an item of the second CQI table whose modulation scheme is 64QAM and whose corresponding CQI number is the largest.

For example, the item of the first CQI table with the modulation scheme of 64QAM may further include an item of the second CQI table with the CQI number of 10-M; wherein M can be 11, 12, 13 and 14; the item of the first CQI table with the modulation scheme of 64QAM may also include items corresponding to CQI numbers 10, 12, and 14 in the second CQI table; the item of the first CQI table with the modulation scheme of 64QAM may also include items corresponding to CQI numbers 10 and 13 in the second CQI table, and the item of the first CQI table with the modulation scheme of 64QAM may also include items corresponding to CQI numbers 10, 13, and 14 in the second CQI table.

Further, in the above six first CQI tables, the spectral efficiency of the corresponding item with the smallest CQI number in the items with a modulation scheme higher than 64QAM may be equal to the spectral efficiency of the corresponding item with the largest CQI number in all the items with a modulation scheme of 64QAM in the second CQI table.

Further, in the above-mentioned six first CQI tables, the spectral efficiencies { S1, …, Si … ST } (arranged from small to large) of the T entries having the smallest CQI numbers among the entries having the modulation schemes higher than 64QAM may be equal to or approximately equal to the spectral efficiencies { P1, …, Pi … PT } (arranged from small to large) of the T entries having the largest CQI numbers among all the entries having the modulation schemes of 64QAM in the second CQI table. Wherein T is any natural number from 1 to 5, and i is more than or equal to 1 and less than or equal to T. By approximately equal is meant: { S1, …, Si … ST } is not identical to { P1, …, Pi … PT }, and the difference between Si and Pi is smaller than a preset value a.

For example, the spectral efficiency of the T entry with the smallest CQI number in the entries of the first CQI table with a modulation scheme higher than 64QAM includes any one or more (two or more) of the following values: {3.3223, 3.9023, 4.5234, 5.1152, 5.5547} or {3.3203,3.8984,4.5234,5.1172,5.5547} including any one or more of the following values. The above spectral efficiencies are respectively equal to or approximately equal to the spectral efficiencies of 5 items with the maximum CQI number in all the items with the modulation mode of 64QAM in the second CQI table.

Taking T as an example of 2, the T entry with the smallest CQI number corresponding to the entry with the modulation scheme higher than 64QAM in the first CQI table is shown in table 3.

TABLE 3

For example, suppose that the item of the first CQI table with the QPSK modulation scheme is 3 items, and the corresponding CQI number is 1 to 3; the item with the modulation mode of 16QAM is 3 items, and the corresponding CQI serial number is 4-6; the item with the modulation mode of 64QAM is 5 items, and the corresponding CQI serial number is 7-11; and the CQI number range in the first CQI table is 0-15, the item that the modulation mode is higher than 64QAM in the first CQI table is 4 items, the correspondent CQI number is 12-15; if the entry with the smallest CQI number is 12, specifically, as shown in the following table, the entry with the CQI number of 12 in the first CQI table is the entry with the CQI number of 15 in the second CQI table shown in table 1.

As can be known from table 4, the entries in the first CQI table and the entries in the second CQI table corresponding to the same CQI number may be the same, for example, when the CQI number is 1; entries in the first CQI table and entries in the second CQI table corresponding to the same CQI number may also be different, such as when the CQI numbers are 5, 9, and 10.

TABLE 4

As can be seen, the above six first CQI tables all include entries with modulation schemes higher than 64QAM, so that the UE is supported to select a modulation scheme with a modulation scheme higher than 64QAM and notify the base station by using a method of sending a CQI number, thereby improving system performance. The sixth first CQI table includes QPSK, 16QAM, and 64QAM and items having a modulation scheme higher than 64QAM, and is a preferred first CQI table.

Further optionally, in any one of the first CQI tables, the spectral efficiency of the item with the largest CQI number corresponding to the item with the modulation scheme higher than 64QAM may be:

or 8 times the maximum coding rate of the terminal UE, wherein the maximum coding rate is a positive real number smaller than 1;

alternatively, 7.4063;

alternatively, 7.432.

It should be noted that the maximum coding rate of the terminal refers to the maximum coding rate of the transport block that the terminal can receive, and if the coding rate of the transport block is greater than the maximum coding rate of the terminal, the terminal may not receive the transport block. The maximum coding rate of the terminal is not the coding rate in the CQI table. In general, the maximum coding rate of the terminal may be 0.93 or 0.929.

Optionally, the spectral efficiencies of the X entries with the largest CQI numbers in any one of the first CQI tables are arranged into an arithmetic progression or an approximate arithmetic progression according to the descending order of the spectral efficiencies; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an arithmetic progression according to the sequence of the spectral efficiencies from small to large, which means that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is equal to a constant from the second item of the X items according to the sequence of the spectral efficiencies from small to large; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an approximately equal difference number array according to the sequence of the spectral efficiencies from small to large, and the sequence refers to that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is within the range of subtracting a preset value from a constant and adding the preset value from the constant from the second item in the X items according to the sequence of the spectral efficiencies from small to large; and X is an integer greater than 2.

That is, assuming that the spectral efficiencies of the X entries with the largest CQI numbers in the first CQI table are (m1, m2, … …, mX), respectively, the difference between the spectral efficiency of each entry and the spectral efficiency of the previous entry is calculated from the second entry of the X entries, denoted as ti, where 1 ≦ i ≦ X-1, i.e., (t1, t2, … …, tX-1), and ti ≦ mi + 1-mi.

If all the values in the (t1, t2, … …, tX-1) are equal (a constant), the spectral efficiencies of the X entries with the largest CQI numbers in the first CQI table are arranged in an arithmetic progression in the order of the smallest spectral efficiency, and the constant is referred to as the tolerance of the arithmetic progression.

If a constant exists, so that the absolute values of the differences between all the numerical values in the (t1, t2, … … and tX-1) and the constant are within a preset value range, arranging the spectral efficiencies of the X items with the largest CQI numbers in the first CQI table into an approximate equal difference series according to the sequence of the spectral efficiencies from small to large; it can also be understood that: if the absolute value of the difference between any two adjacent numerical values in the (t1, t2, … … and tX-1) is smaller than a preset value, each numerical value in the (t1, t2, … … and tX-1) is approximately equal, then the spectral efficiencies of the X items with the largest CQI numbers in the first CQI table are arranged into an approximately equal-difference series according to the sequence of the spectral efficiencies from small to large, and the constant is called the tolerance of the approximately equal-difference series.

For example, taking X ═ 3 as an example, the 3 entries with the largest CQI numbers in the first CQI table are shown in table 5-1.

TABLE 5-1

As shown in table 5-1, the entries with CQI numbers 13-15 correspond to spectral efficiencies of 6.1719, 6.7891, 7.4063, respectively; starting from the second term (i.e. from the term with the CQI number 14), the difference between the spectral efficiency of each term and the spectral efficiency of the previous term is equal to 0.6172, and then the spectral efficiencies of the 3 terms with the largest CQI number in the first CQI table are organized into an equal difference number series according to the sequence of the spectral efficiencies from small to large.

For example, taking X ═ 3 as an example, the 3 entries with the largest CQI numbers in the first CQI table are shown in table 5-2.

TABLE 5-2

As shown in table 5-2, the spectral efficiencies corresponding to the entries with CQI numbers 13-15 are 6.1797, 6.8047, 7.4297, respectively, and the difference between the spectral efficiency of each entry and the spectral efficiency of the previous entry is equal to 0.625, starting from the second entry (i.e., from the entry with CQI number 14), then the spectral efficiencies of the 3 entries with the largest CQI number in the first CQI table are grouped into an equal difference series in the order of the spectral efficiencies from small to large; alternatively, the first and second electrodes may be,

as shown in table 5-2, the entries with CQI numbers 13-15 correspond to spectral efficiencies of 6.1805, 6.8062, 7.432, respectively; assuming that the preset value is 0.001, the difference between the spectral efficiency of each term and the spectral efficiency of the previous term is in the range of 0.625 minus 0.001 plus 0.625 plus 0.001 from the second term (i.e. from the term with the CQI number of 14), then the spectral efficiencies of the 3 terms with the largest CQI numbers in the first CQI table are grouped into an approximately equal difference number column in the order of the spectral efficiencies from small to large.

Alternatively, the spectral efficiency of the entry with the minimum CQI number corresponding to the X entries with the maximum CQI number in the first CQI table may be equal to the spectral efficiency of the entry with the maximum CQI number corresponding to all entries with a modulation scheme of 64QAM in the second CQI table.

Optionally, the spectrum efficiency of the entry with the largest CQI number, among the X entries with the largest CQI number in the first CQI table, may be:

alternatively, 7.4063;

alternatively, 7.432.

Further optionally, in any of the first CQI tables, the spectral efficiency of the term with the modulation higher than 64QAM includes at least one of the following values:

{5.5547 6.1805 6.8062 7.432}，

{6.1805 6.8062 7.432}，

{5.5547 6.1797 6.8047 7.4297}，

{6.1797 6.8047 7.4297}，

{5.5547 6.1719 6.7891 7.4063}，

{6.1719 6.7891 7.4063}，

{5.5547 6.4934 7.432}，

{6.4934 7.432}，

{5.5547 6.4922 7.4297}，

{6.4922 7.4297}，

{5.5547 6.4805 7.4063}，

{6.4805 7.4063}，

{5.5547 6.4844 7.4063}，

{6.4844 7.4063}，

{5.5547 6.0240 6.4934 6.9627 7.432}，

{6.0234 6.4922 6.9609 7.4297}，

{5.5547 6.0234 6.4922 6.9609 7.4297}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0176 6.4805 6.9434 7.4063}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0156 6.4844 6.9453 7.4063}，

{6.0156 6.4844 6.9453 7.4063}，

{5.5547 5.9302 6.3056 6.6811 7.0565 7.432}，

{5.9302 6.3056 6.6811 7.0565 7.432}，

{5.5547 5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.5547 5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.5547 5.9219 6.2969 6.6641 7.0391 7.4063}，

and 5.92196.29696.66417.03917.4063.

In the following, the spectral efficiencies of the terms with modulation schemes higher than 64QAM in the first CQI table are taken as examples, and each term includes one of the following values:

{5.5547 6.1797 6.8047 7.4297}

alternatively, { 6.17976.80477.4297 }

Alternatively, { 5.55476.17196.78917.4063 }

Alternatively, { 6.17196.78917.4063 }

Four first CQI tables are listed as follows:

TABLE 6-1

TABLE 6-2

Tables 6 to 3

Tables 6 to 4

Four other first CQI tables are listed as follows:

tables 6 to 5

Tables 6 to 6

Tables 6 to 7

Tables 6 to 8

Note that, the first CQI table may not include an entry "CQI number in the second CQI table," and this entry is added only to indicate a relationship between the first CQI table and the second CQI table.

Furthermore, it should be noted that the first CQI table is used to describe the mapping relationship between the CQI number and the entry, the mapping relationship of the first CQI table in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the expression form of the first CQI table in the present invention includes but is not limited to this, that is, the first CQI table may have various combinations, and as long as the mapping relationship between the first CQI number and the entry can be embodied, the first CQI table belongs to the scope to be protected by the present invention.

S102, the UE sends a first CQI number to the base station.

The following describes in detail a MCS notification method according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 2, the MCS notification method includes the following steps:

s201, the base station receives a first CQI number.

And the first CQI number is determined by the UE according to the acquired first CQI table.

S202, the base station determines a first MCS number according to the first CQI table, the first MCS table and the received first CQI number.

Wherein, the first MCS table can be predefined by a protocol, and the UE is preset according to the protocol or is pre-stored by the UE; or the UE is selected from at least two predefined tables according to the downlink channel state; or the base station may notify the UE, specifically, the method for the base station to notify the UE may be that the base station selects one of at least two predefined tables according to the uplink channel state or the downlink channel state and notifies the selected one of the at least two predefined tables to the UE. The MCS table is used to describe the mapping relationship between the MCS number and the entry, the mapping relationship of the MCS table in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the representation form of the MCS table in the present invention includes but is not limited to this, that is, the MCS table may have various combinations, as long as the mapping relationship between the MCS number and the entry can be embodied, which all belong to the protection scope of the present invention.

Wherein the first CQI table may include:

items with modulation higher than 64 QAM;

at least one item of the second CQI table with the QPSK modulation mode comprises a combination except the first combination in a combination formed by at least one item of the second CQI table with the QPSK modulation mode, the first combination is N items with continuous maximum CQI numbers corresponding to the QPSK in the second CQI table, wherein N is equal to 3 or is a positive integer smaller than 4 or is a positive integer; and/or at least one item of which the modulation mode is 16QAM in the second CQI table;

That is to say, the first CQI table includes an entry with a modulation scheme higher than 64QAM, the first CQI table further includes an entry with at least one modulation scheme QPSK in the second CQI table, and the entry with the modulation scheme QPSK in the first CQI table cannot be only N entries with the largest consecutive CQI numbers corresponding to the entry with the modulation scheme QPSK in the second CQI table, where N is equal to 3 or the N is a positive integer less than 4 or the N is a positive integer; and/or, the first CQI table further includes an item in a second CQI table, where at least one modulation scheme is 16 QAM; the modulation schemes in the entries in the second CQI table include only QPSK, 16QAM, and 64 QAM; the item in the first CQI table refers to a modulation mode, a coding rate and a spectrum efficiency corresponding to each CQI number in the first CQI table; the item in the second CQI table refers to a modulation mode, a coding rate, and a spectrum efficiency corresponding to each CQI number in the second CQI table.

It should be noted that, in the present embodiment, the description of the first CQI table in the embodiment corresponding to fig. 1 may be referred to, and no statement is made in the present embodiment.

Wherein the first MCS table may include:

items with modulation higher than 64 QAM;

at least one item of the second MCS table, of which the modulation scheme is QPSK, includes a combination, except the second combination, of combinations formed by at least one item of the second MCS table, of which the modulation scheme is QPSK, and the second combination is K items of which the MCS numbers corresponding to QPSK in the second MCS table are continuous and maximum, wherein K is equal to 4 or is a positive integer smaller than 5 or is a positive integer; and/or at least one item with a modulation mode of 16QAM in the second MCS table;

the modulation modes in the second MCS table only comprise QPSK, 16QAM and 64 QAM;

that is to say, the first MCS table further includes at least one item of which the modulation scheme is QPSK in the second MCS table, and the MCS number of the item of which the modulation scheme is QPSK in the second MCS table cannot be only the item corresponding to the continuous maximum K MCS numbers, where K is equal to 4 or is a positive integer less than 5 or is a positive integer, and/or the first MCS table further includes at least one item of which the modulation scheme is 16QAM in the second MCS table; the modulation schemes in the entries in the second MCS table include only QPSK, 16QAM, and 64 QAM; the item in the first MCS table refers to a modulation mode and a TBS number corresponding to each MCS number in the first MCS table; the item in the second MCS table refers to a modulation scheme and a TBS number corresponding to each MCS number in the second MCS table.

The combination is a combination of at least one item of the second MCS table in which the modulation scheme is QPSK. Taking the second MCS table shown in table 6 as an example, the total number of combinations made up of at least one QPSK modulation scheme in the second MCS table is 210-1 to 1023. For example, the combination may be a combination of entries corresponding to the CQI number 6 in the second MCS table, a combination of entries corresponding to the MCS numbers 6, 7, 8, and 9 in the second MCS table, a combination of entries corresponding to the CQI numbers 3, 6, 7, 8, and 9 in the second CQI table, or the like.

Specifically, there may be three first MCS tables:

first MCS table: only including the item that the modulation mode is QPSK and the modulation mode is higher than 64 QAM;

second first MCS table: only items with the modulation mode of 16QAM and the modulation mode higher than 64QAM are included;

third first MCS table: only items with modulation schemes of QPSK, 16QAM and modulation schemes higher than 64QAM are included.

The first MCS table of the present invention may be various, and the above three first MCS tables are only examples for helping understanding of the present invention, and the present invention is not limited thereto.

Specifically, determining the first MCS number according to the received first CQI number, the first CQI table, and the first CQI number received by the first MCS table, or determining the first MCS number according to the acquired first CQI table, the acquired first MCS table, and the received first CQI number includes:

a first TBS number and a first MCS number are determined based on the first CQI table, the first MCS table, and the received first CQI number. The method specifically comprises the following steps: and determining a first TBS number and a first MCS number according to the acquired first PRB number, the first CQI table, the first MCS table and the received first CQI number. Further comprising: and determining a first TBS number and a first MCS number according to the acquired first PRB number, the first CQI table, the first MCS table, the first TBS table and the received first CQI number.

The first PRB number is the PRB number allocated to the UE by the base station; or the first PRB number is a maximum integer less than or equal to a product of the PRB number allocated to the UE and a specific coefficient; wherein the specific coefficient is a pre-stored value or a value notified to the UE by the base station.

Specifically, if the first modulation scheme is 256QAM and the number of PRBs allocated to the UE is less than or equal to the specific threshold Q, the first number of PRBs is a maximum integer not greater than a product of the number of PRBs allocated to the UE and the specific coefficient P. Wherein the product of P and Q is not greater than the maximum number of PRBs, which is 110 in the LTE system. Preferably, when Q is 82, P is 1.33, where P is Q109.06 <110, and in this case, if the number of PRBs allocated to the UE by the base station is 50, the first PRB number is the largest integer smaller than or equal to 50, 1.33, 66.5, that is, the first PRB number is 66.

Further optionally, the value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26.

Or optionally, the value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and the size of the transport block corresponding to the value range of the TBS number in the first TBS table of 0-26 is the same as the size of the transport block corresponding to the value range of the TBS number in the second TBS table of 0-26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

Or optionally, the value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and the size of the transport block corresponding to the value range of the TBS number in the first TBS table, which is 0-C, is the same as the size of the transport block corresponding to the value range of the TBS number in the second TBS table, which is a non-negative integer less than or equal to 26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

More specifically, the determining the first TBS number according to the first CQI table, the first PRB number, the first TBS table, and the received first CQI number includes:

first, according to the received first CQI number and the first CQI table, a first modulation scheme and a first spectrum efficiency corresponding to the received first CQI number are determined.

Secondly, the size of a first transmission block transmitted to the UE is obtained according to the first PRB number and the first spectrum efficiency.

Then, according to the first TBS table, a first TBS number corresponding to the first transport block size and the first PRB number in the first TBS table is obtained.

It is noted that the first CQI table, the first MCS table, and the first TBS table may be pre-stored by the base station.

For ease of understanding, the TBS table (i.e., the second TBS table) in the existing protocol is as follows:

TABLE 7

For example, when B is 32, the first TBS number in the first TBS table ranges from 0 to 32 (as shown in table 8). Xxx of the example in the table represents the transport block size, and the specific value can be set according to the simulation result.

TABLE 8

The first TBS table is further defined below.

Optionally, the first TBS table includes TBS number Y1, where for each PRB number, the transport block size corresponding to TBS number Y1 is larger than the transport block size corresponding to TBS number 25 in the second TBS table and is smaller than the transport block size corresponding to TBS number 26 in the second TBS table. The value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

Wherein, TBS number Y1 may be greater than 26, for example, Y1 may be 27 or 28.

For example, for each number of PRBs, the transport block size corresponding to TBS number 27 in the first TBS table is larger than the transport block size corresponding to TBS number 25 in said second TBS table and smaller than the transport block size corresponding to TBS number 26 in said second TBS table. More specifically, if the number of PRBs is 1, the size of the transport block corresponding to the TBS number 27 in the first TBS table is greater than 616 and less than 712; for another example, if the number of PRBs is 2, the transport block size corresponding to the TBS number 27 in the first TBS table is greater than 1256 and smaller than 1480.

Optionally, the first TBS table includes TBS number Y2 and at least one corresponding TBS number Y2 in the following table a, where any one includes a PRB number and a transport block size corresponding to the PRB number:

the TBS number Y2 in the first TBS table may be greater than 26, and example Y2 is 27.

Table A

And/or the presence of a gas in the gas,

the TBS number Y3 in the first TBS table may be greater than 26, for example, Y3 ═ 33.

Table B1

Table B2

Table B3

Table B4

And/or the presence of a gas in the gas,

wherein Y4_1-Y4_5 in the first TBS table may be greater than 26, for example, Y4_1 is 28, Y4_2 is 29, Y4_3 is 30, Y4_4 is 31, and Y4_5 is 32.

Table C1

Table C2

And finally, acquiring a first MCS number corresponding to the first TBS number according to the first MCS table, the first modulation mode and the first TBS number.

The first CQI table described in this embodiment is the same as the first CQI table in the above embodiment, and is not described here again. The first MCS table in the present embodiment will be described in detail below.

For ease of understanding, the following MCS table (i.e., the second MCS table) is used as an example for explanation:

TABLE 9

The modulation order and the modulation scheme in table 9 correspond to each other, and for example, the modulation order is 2 if the modulation scheme is QPSK, 4 if the modulation scheme is 16QAM, 6 if the modulation scheme is 64QAM, and 8 if the modulation scheme is 256 QAM.

The entries in table 9 with MCS numbers 29, 30 and 31 are reserved entries.

It should be noted that, in order to reduce the change to the prior art in the implementation process, it is preferable that the range of the MCS number in the first MCS table and the range of the MCS number in the second MCS table are the same and 0 to 31, and of course, the range of the MCS number in the first MCS table may be larger than the range of the MCS number in the second MCS table, for example, the range of the MCS number in the first MCS table is 0 to 40.

First MCS table: the first MCS table includes only entries with QPSK modulation and higher than 64QAM modulation.

The first MCS table may include one or more entries with modulation schemes higher than 64QAM, and each entry with modulation schemes higher than 64QAM includes a modulation order and a first TBS number, and has a corresponding MCS number.

Watch 10

The first MCS table further includes at least one item of which the modulation scheme is QPSK in the second MCS table, and the at least one item of which the modulation scheme is QPSK includes a combination other than the second combination in a combination composed of at least one item of which the modulation scheme is QPSK in the second MCS table. That is to say, the first MCS table further includes at least one item of which modulation scheme is QPSK in the second MCS table, and the MCS number of the item of which modulation scheme is QPSK in the second MCS table is not the item corresponding to the largest consecutive K MCS numbers, where K is 6. That is, the entries with modulation schemes QPSK in the first MCS table are not the 6 entries with the largest continuous MCS number in the entries with modulation schemes QPSK in the second MCS table (i.e., in table 4), and the entries with modulation schemes QPSK in the second MCS table correspond to the modulation schemes QPSK with part of the 9 entries with modulation schemes 0 to 9.

That is, the entries of the first MCS table whose modulation scheme is QPSK cannot be only the entries of the second MCS table whose MCS numbers are 4,5, 6, 7, 8, and 9.

Or, the first MCS table further includes at least one item of which the modulation scheme is QPSK in the second MCS table, and the MCS number of the item of which the modulation scheme is QPSK in the second MCS table is not the item corresponding to the largest consecutive K MCS numbers, where K is a positive integer. That is, the modulation schemes corresponding to MCS numbers 0 to 9 in the second MCS table are partial entries of 9 entries of QPSK, and the entry of QPSK in the first MCS table is not the K entries of QPSK with the largest consecutive MCS numbers in the entries of QPSK in the second MCS table, specifically, K may have a value range of 1 to 8, that is:

the item of the first MCS table whose modulation scheme is QPSK cannot be only the item of the second MCS table whose MCS number is 9, or,

the entries of the first MCS table with QPSK modulation cannot be only the entries of the second MCS table with MCS numbers 8 and 9, or,

the entries of the first MCS table with the QPSK modulation scheme cannot be only the entries of the second MCS table with the MCS numbers 7, 8, and 9, or,

the entries of the first MCS table whose modulation scheme is QPSK cannot be only the entries of the second MCS table whose MCS numbers are 6, 7, 8, 9, or,

the entries of the first MCS table whose modulation scheme is QPSK cannot be only the entries of the second MCS table whose MCS numbers are 5, 6, 7, 8, 9, or,

the entries of the first MCS table whose modulation scheme is QPSK cannot be only the entries of the second MCS table whose MCS numbers are 4,5, 6, 7, 8, 9, or,

the entries of the first MCS table whose modulation scheme is QPSK cannot be only the entries of the second MCS table whose MCS numbers are 3, 4,5, 6, 7, 8, 9, or,

the entries of the first MCS table with the QPSK modulation scheme cannot be only the entries of the second MCS table with the MCS numbers 2, 3, 4,5, 6, 7, 8, and 9.

Or, the first MCS table includes a partial entry of the second MCS table whose modulation scheme is QPSK, and MCS numbers corresponding to the partial entry are equally spaced.

For example, if the entry of the first MCS table with the QPSK modulation scheme includes 3 entries of the second MCS table with the QPSK modulation scheme, the entry of the first MCS table with the QPSK modulation scheme may include entries corresponding to MCS numbers 0, 3, and 6 in the second MCS table, or the entry of the first MCS table with the QPSK modulation scheme may also include entries corresponding to CQI numbers 2,5, and 8 in the second MCS table; or, the entries of the first MCS table with QPSK modulation may also include entries of the second MCS table with CQI numbers of 3, 6, and 9; or, the entries of the first MCS table with the QPSK modulation scheme may also include entries of the second MCS table with CQI numbers of 0, 4, and 8; or, the entries of the first MCS table with the QPSK modulation scheme may also include entries of the second MCS table with CQI numbers of 1, 5, and 9;

if the item of the first MCS table with the QPSK modulation scheme includes 4 items of the second MCS table with the QPSK modulation scheme, the item of the first MCS table with the QPSK modulation scheme may include items corresponding to MCS numbers 0, 3, 6, and 9 in the second MCS table;

if the entry of the first MCS table with the QPSK modulation scheme includes 5 entries of the second MCS table with the QPSK modulation scheme, the entry of the first MCS table with the QPSK modulation scheme may include entries corresponding to MCS numbers 1, 3, 5, 7, and 9 in the second MCS table; or, the entries of the first MCS table with the QPSK modulation scheme may include entries of the second MCS table with MCS numbers 0,2, 4, 6, and 8.

Or, the first MCS table includes a partial entry of the second MCS table whose modulation scheme is QPSK, and MCS numbers corresponding to the partial entry are not equally spaced.

For example, the entry of the first MCS table with the QPSK modulation scheme includes M entries of the second MCS table with the QPSK modulation scheme, where M may be 3, 4,5, 6, 7, 8, and 9, and if M is 5, the entry of the first MCS table with the QPSK modulation scheme includes 5 entries of the MCS table with the QPSK modulation scheme, and the entry of the first MCS table with the QPSK modulation scheme may include entries of the MCS tables with corresponding second MCS numbers of 1, 4, 7, 8, and 9.

Or, the first MCS table includes a partial entry of the second MCS table, where the modulation scheme is QPSK, and the MCS numbers corresponding to the partial entry are discontinuous, and at least one entry except the entry with the largest MCS number in all entries of the second MCS table, where the modulation scheme is QPSK, that is, the partial entry of the first MCS table, where the modulation scheme is QPSK, does not include the entry with the largest MCS number in all entries of the second MCS table, where the modulation scheme is QPSK.

For example, the entries of the first MCS table with the QPSK modulation scheme include M entries of the second MCS table with the QPSK modulation scheme, the value of M may be 1,2, 3, 4,5, 6, 7, 8, and 9, if M is 8, the entries of the first MCS table with the QPSK modulation scheme include 8 entries of the second MCS table with the QPSK modulation scheme, and the entries of the first MCS table with the QPSK modulation scheme may include entries corresponding to MCS numbers 0, 1,2, 3, 4,5, 6, and 8 in the second MCS table.

Still alternatively, the first MCS table includes a partial entry of the second MCS table with the QPSK modulation scheme, and MCS numbers corresponding to the partial entries are consecutive, and at least one entry except an entry with the maximum MCS number in all entries of the second MCS table with the QPSK modulation scheme is included in the first MCS table, that is, the partial entry of the second MCS table with the QPSK modulation scheme does not include an entry with the maximum MCS number in all entries of the second MCS table with the QPSK modulation scheme in the first MCS table.

For example, the entries of the first MCS table with the QPSK modulation scheme include M entries of the second MCS table with the QPSK modulation scheme, the value of M may be 1,2, 3, 4,5, 6, 7, 8, and 9, if M is 8, the entries of the first MCS table with the QPSK modulation scheme include 8 entries of the second MCS table with the QPSK modulation scheme, and the entries of the first MCS table with the QPSK modulation scheme may include entries corresponding to MCS numbers 0, 1,2, 3, 4,5, 6, and 7 in the second MCS table.

Second first MCS table: the second first MCS table includes only items of modulation schemes 16QAM and higher than 64 QAM.

The first MCS table also comprises at least one item with a modulation mode of 16QAM in the second MCS table.

Specifically, the first MCS table further includes all the entries of the second MCS table with modulation schemes of 16 QAM.

Illustratively, the first MCS table further includes 6 entries of 16QAM modulation schemes corresponding to MCS numbers 10-16 corresponding to entries of 16QAM modulation schemes in the second MCS table.

Or, the first MCS table further includes an entry of the second MCS table with a modulation scheme of 16QAM, and MCS numbers corresponding to the partial entries are equally spaced.

For example, if the item of the first MCS table with the modulation scheme of 16QAM includes 3 items of the second MCS table with the modulation scheme of 16QAM, the item of the first MCS table with the modulation scheme of 16QAM may include items corresponding to MCS numbers of 10, 13, and 16 in the second MCS table; or, the item of the first MCS table with the modulation scheme of 16QAM may also include items corresponding to MCS numbers 10, 12, and 14 in the second MCS table; or, the item of the first MCS table with the modulation scheme of 16QAM may also include items corresponding to MCS numbers 11, 13, and 15 in the second MCS table; or, the item of the first MCS table with the modulation scheme of 16QAM may also include items corresponding to MCS numbers 12, 14, and 16 in the second MCS table;

if the item of the first MCS table with the modulation scheme of 16QAM includes 4 items of the second MCS table with the modulation scheme of 16QAM, the item of the first MCS table with the modulation scheme of 16QAM may include items corresponding to MCS numbers 10, 12, 14, and 16 in the second MCS table.

Or, the first MCS table further includes an entry in the second MCS table, where the modulation scheme of the entry is 16QAM, and the MCS numbers corresponding to the partial entries are not equally spaced.

For example, the item of the first MCS table with the modulation scheme of 16QAM includes an item of M of the second MCS table with the modulation scheme of 16QAM, and a value of M may be 3, 4,5, and 6. If M is 5, the entries of the first MCS table with the modulation scheme of 16QAM may include entries of the second MCS table with MCS numbers of 10, 12, 14, 15, and 16.

Or, the first MCS table further includes a partial item of the second MCS table with a modulation scheme of 16QAM, and the MCS numbers corresponding to the partial item are not consecutive, and at least one item except the item with the largest second MCS number in all items with a modulation scheme of 16QAM in the second MCS table. That is to say, the first MCS table further includes a partial item of the second MCS table with a modulation scheme of 16QAM, the MCS numbers corresponding to the partial item are not consecutive, and the partial item does not include an item with the largest MCS number among all items of the second MCS table with a modulation scheme of 16 QAM.

For example, the item of the first MCS table with the modulation scheme of 16QAM includes an item of M of the second MCS table with the modulation scheme of 16QAM, and a value of M may be 1,2, 3, 4,5, and 6. If M is 5, the entries of the first MCS table with the modulation scheme of 16QAM may include entries of the second MCS table with MCS numbers of 10, 11, 12, 13, and 15.

Or, the first MCS table further includes a partial item of the second MCS table with a modulation scheme of 16QAM, and MCS numbers corresponding to the partial item are consecutive, and at least one item except an item with a maximum MCS number in all items with a modulation scheme of 16QAM in the second MCS table. That is to say, the first MCS table further includes a part of entries of the second MCS table, where the modulation scheme is 16QAM, and the part of entries does not include an entry with the largest MCS number in all entries of the second MCS table, where the modulation scheme is 16 QAM.

For example, the item of the first MCS table with the modulation scheme of 16QAM includes an item of M of the second MCS table with the modulation scheme of 16QAM, and a value of M may be 1,2, 3, 4,5, and 6. If M is 6, the entries of the first MCS table with the modulation scheme of 16QAM may include entries of the second MCS table with MCS numbers of 10, 11, 12, 13, 14, and 15.

Or, the first MCS table further includes some entries of the second MCS table with a modulation scheme of 16QAM, and at least one entry except for the entry with the largest and the smallest MCS number in all entries of the second MCS table with a modulation scheme of 16 QAM. That is to say, the first MCS table further includes a part of entries of the second MCS table, where the modulation scheme is 16QAM, and the part of entries does not include the entry with the largest and smallest MCS number in all entries of the second MCS table, where the modulation scheme is 16 QAM.

For example, the item of the first MCS table with the modulation scheme of 16QAM includes an item of M of the second MCS table with the modulation scheme of 16QAM, and a value of M may be 1,2, 3, 4, and 5. If M is 5, the item of the first MCS table with the modulation scheme of 16QAM may include items corresponding to MCS numbers 11, 12, 13, 14, and 15 in the second MCS table;

or, if M is 4, the item of the first MCS table with the modulation scheme of 16QAM may include items corresponding to MCS numbers 11, 12, 13, and 14 in the second MCS table; alternatively, the entries of the first MCS table with the modulation scheme of 16QAM may include entries of the second MCS table with MCS numbers of 11, 13, 14 and 15.

Third first MCS table: and adding an item with a modulation mode of 16QAM on the basis of the first MCS table to obtain a third first MCS table. The third first MCS table includes only the items of the modulation schemes QPSK, 16QAM, and the modulation scheme higher than 64 QAM. Specifically, the item of the third first MCS table with the modulation scheme of 16QAM and the item of the second first MCS table with the modulation scheme of 16QAM may be the same, which may refer to the description of the item of the second first MCS table with the modulation scheme of 16QAM, and are not described herein again.

Further, the first MCS table further includes at least one item of 64QAM modulation scheme in the second MCS table.

That is, on the basis of the first MCS table, the table added with the item with the modulation mode of 64QAM is the fourth MCS table; at this time, the fourth first MCS table includes items that the modulation mode is QPSK, a modulation mode higher than 64QAM, and 16 QAM;

or, on the basis of the second first MCS table, the table added with the item with the modulation mode of 64QAM is a fifth first MCS table; at this time, the fifth first MCS table includes items that the modulation mode is 16QAM, a modulation mode higher than 64QAM, and 64 QAM;

or, on the basis of the third first MCS table, the table added with the item with the modulation mode of 64QAM is the sixth first MCS table; in this case, the sixth first MCS table includes items that the modulation schemes are QPSK, 16QAM, a modulation scheme higher than 64QAM, and 64 QAM.

The items with the modulation mode of 64QAM in the fourth, fifth or sixth first MCS table are as follows:

specifically, the first MCS table further includes all items of the second MCS table whose modulation schemes are 64 QAM.

Illustratively, the first MCS table further includes 12 entries of 64QAM modulation schemes corresponding to MCS numbers 17-28 corresponding to entries of 64QAM modulation schemes in the second MCS table.

Or, the first MCS table further includes a part of entries of the second MCS table, where the modulation scheme is 64QAM, and at least one entry except an entry with the smallest MCS number in all entries of the second MCS table, where the modulation scheme is 64 QAM. That is to say, the second MCS table includes a part of entries having a modulation scheme of 64QAM, and the part of entries does not include the entry having the smallest MCS number among all entries having a modulation scheme of 64QAM in the second MCS table.

Or, the first MCS table further includes a part of entries of the second MCS table, where the modulation scheme is 64QAM, and at least one entry except an entry with the largest MCS number in all entries of the second MCS table, where the modulation scheme is 64 QAM. That is to say, the second MCS table includes a part of entries having a modulation scheme of 64QAM, and the part of entries does not include an entry having the largest MCS number among all entries having a modulation scheme of 64QAM in the second MCS table.

Illustratively, the first MCS table further includes M entries of a modulation scheme 64QAM in the second MCS table, a value range of M is 1 to 11, and M is an integer. If M is 5, the item of the first MCS table with the modulation scheme of 64QAM may include items corresponding to MCS numbers 18,19,20,21, and 23 in the second MCS table; or, the item of the first MCS table with the modulation scheme of 64QAM may include items corresponding to MCS numbers 18, 20,21, 24, and 25 in the second MCS table;

or, if M is 7, the item of the first MCS table with the modulation scheme of 64QAM may include items of the second MCS table with MCS numbers of 18,19,20,21, 23, 25 and 26; or, the item of the first MCS table with the modulation scheme of 64QAM may include items of the second MCS table with MCS numbers of 19,20,21, 24,25, 27 and 28.

Alternatively, if M is 1, the entries of the first MCS table having a modulation scheme of 64QAM may include entries of the second MCS table having MCS numbers of 17,18,19,20,21,22,23,24,25, 26, and 27.

Further, in the sixth MCS table, the TBS number of the corresponding entry with the lowest MCS number among all entries of the first MCS table having a modulation scheme higher than 64QAM is the same as the TBS number of the entry with the highest MCS number among all entries of the second MCS table having a modulation scheme of 64 QAM.

Further, in the above-mentioned six first MCS tables, the TBS numbers of the corresponding R entries with the smallest MCS number among the entries with modulation schemes higher than 64QAM may be equal to the TBS numbers of the R entries with the largest MCS number among all the entries with modulation schemes of 64QAM and MCS numbers not higher than 27 in the second MCS table; wherein R is a natural number.

For example, the TBS numbers of R entries with the smallest MCS number among the entries with modulation schemes higher than 64QAM in the first MCS table may include any one or more (two or more) of the following values: {15,16,17,18,19,20,21,22,23,24,25}.

Taking R ═ 2 as an example, R entries with the smallest MCS number among the entries of the first MCS table whose modulation schemes are higher than 64QAM are shown in table 11-1 below.

TABLE 11-1

For example, suppose that the item of the first MCS table with QPSK modulation is 5 items, and the corresponding MCS number is 0 to 4; the item with the modulation mode of 16QAM is 5 items, and the corresponding MCS number is 5-9; the item with the modulation mode of 64QAM is 11 items, and the corresponding MCS number is 10-20; and the MCS number range in the first MCS table is 0-31, wherein, the item of the first MCS table whose modulation mode is higher than 64QAM is 7 items (including 3 reserved items, the corresponding MCS numbers are 28, 29, 30 and 31), the corresponding MCS numbers are 21-28; where the entry with the smallest number is 21, specifically, as shown in table 11 below, the TBS number of the entry with MCS number 21 in the first MCS table is 26, which is equal to the TBS number of the entry with MCS number 28 in the second MCS table shown in table 9.

TABLE 11-2

It should be noted that the first MCS table may not actually have an item "MCS number in second MCS table", but is shown in Table 11-1 or Table 11-2 only for clarity of describing the relationship between the first MCS table and the second MCS table.

Or, the first MCS table further includes at least one of the following tables D1, D2, D3, D4, or D5, where any one of the tables includes an MCS number, and a modulation order and a TBS number corresponding to the MCS number:

table D1

Table D2

Table D3

Table D4

Table D5

Specifically, in the above embodiment, the exemplified Y2 is 27, Y3 is 33, Y4_1 is 28, Y4_2 is 29, Y4_3 is 30, Y4_4 is 31, and Y4_5 is 32.

It can be seen that, the above six first MCS tables all include items with modulation schemes higher than 64QAM, so that the support base selects a modulation scheme with a modulation scheme higher than 64QAM and notifies the UE by using a method of sending a MCS number, thereby improving system performance. And, sixth first MCS among them

The table contains QPSK, 16QAM, and 64QAM and items of a modulation scheme higher than 64QAM, which is a preferred first MCS table.

S203, the base station sends the determined first MCS number to the UE.

As shown in fig. 3, the present invention further provides another MCS notification method, which includes the following steps:

the first CQI table in this embodiment may be the same as or different from any one of the first CQI tables in the above embodiments, but the two tables have the common point that: include terms having a modulation scheme higher than 64 QAM. The first MCS table in this embodiment may be any of the MCS tables in the above embodiments.

The first MCS table can be predefined by a protocol, preset by the UE according to the protocol or pre-stored by the UE; or the UE is selected from at least two predefined tables according to the downlink channel state; or the base station may notify the UE, specifically, the method for the base station to notify the UE may be that the base station selects one of at least two predefined tables according to the uplink channel state or the downlink channel state and notifies the selected one of the at least two predefined tables to the UE. The MCS table is used to describe the mapping relationship between the MCS number and the entry, the mapping relationship of the MCS table in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the representation form of the MCS table in the present invention includes but is not limited to this, that is, the MCS table may have various combinations, as long as the mapping relationship between the MCS number and the entry can be embodied, which all belong to the protection scope of the present invention.

S301, the base station receives the first CQI number.

And the first CQI number is determined by the UE according to the acquired first CQI table. And the first MCS number is determined by the base station according to the acquired first MCS table.

S302, the base station determines a first MCS number according to the first CQI table, the first MCS table and the received first CQI number.

Wherein the first CQI table includes: items with modulation higher than 64 QAM; the item in the first CQI table refers to a modulation mode, a coding rate, and a spectrum efficiency corresponding to each CQI number in the first CQI table.

The first MCS table includes:

items with modulation higher than 64 QAM;

at least one item of the second MCS table, where at least one item of the modulation scheme is QPSK, includes a combination of combinations of at least one item of the second MCS table, where at least one item of the second MCS table is QPSK, except for a first combination (which is called a first combination (considering that the first combination is used to name from the first beginning, and is substantially the same as the second combination in the corresponding embodiment of fig. 2), where the first combination is K items of the second MCS table, where the MCS numbers corresponding to QPSK are continuously largest, where K is equal to 4 or is a positive integer smaller than 5 or is a positive integer; and/or at least one item with a modulation mode of 16QAM in the second MCS table;

that is to say, the first MCS table includes an entry with a modulation scheme higher than 64QAM, the first MCS table further includes at least one entry with a modulation scheme QPSK in the second MCS table, and the MCS number of the entry with the modulation scheme QPSK in the second MCS table cannot be only the entry corresponding to the largest consecutive K MCS numbers, where K is equal to 4 or the K is a positive integer less than 5 or the K is a positive integer, and/or the first MCS table further includes at least one entry with a modulation scheme 16QAM in the second MCS table. The modulation modes in the entries of the second MCS table only comprise QPSK, 16QAM and 64QAM, and the entries in the first MCS table refer to one modulation mode and one TBS number corresponding to each MCS number in the first MCS table; the item in the second MCS table refers to a modulation scheme and a TBS number corresponding to each MCS number in the second MCS table.

It should be noted that, the method for the base station to determine the first MCS number according to the received first CQI number, the first CQI table, and the first MCS table is the same as the method described in the above embodiment, and is not described here again. For the method for determining the first TBS number and the description of the first TBS table and the second TBS table, reference may be made to the previous embodiment, which is not repeated herein.

Moreover, the first MCS table described in this embodiment may be any one of the six first MCS tables in the foregoing embodiment, and details are not described here.

S303, the base station sends the determined first MCS number to the UE.

As shown in fig. 4, the present invention further provides another MCS notification method, and the first MCS table in this embodiment may be any one of the first MCS tables in the above embodiments.

In this embodiment, the first MCS table may be predefined by a protocol, and preset by the UE according to a protocol specification or pre-stored by the UE; or the UE is selected from at least two predefined tables according to the downlink channel state; or the base station may notify the UE, specifically, the method for the base station to notify the UE may be that the base station selects one of at least two predefined tables according to the uplink channel state or the downlink channel state and notifies the selected one of the at least two predefined tables to the UE. The MCS table is used to describe the mapping relationship between the MCS number and the entry, the mapping relationship of the MCS table in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the representation form of the MCS table in the present invention includes but is not limited to this, that is, the MCS table may have various combinations, as long as the mapping relationship between the MCS number and the entry can be embodied, which all belong to the protection scope of the present invention.

The method comprises the following steps:

s401, the UE receives a first MCS number sent by the base station.

And the first MCS number is determined by the base station according to the acquired first MCS table.

S402, the UE determines a modulation order and a coding block size according to the first MCS table and the received first MCS number.

Wherein the first MCS table comprises:

items with modulation higher than 64 QAM;

at least one item of the second MCS table with the modulation mode being QPSK, and the item of the second MCS table with the modulation mode being QPSK comprises a combination except the first combination in the combination formed by at least one item of the second MCS table with the modulation mode being QPSK, the first combination is K items with continuous maximum MCS numbers corresponding to QPSK in the second MCS table, wherein K is equal to 4 or the K is a positive integer smaller than 5 or the K is a positive integer; and/or at least one item with a modulation mode of 16QAM in the second MCS table;

The first MCS table comprises items with modulation modes higher than 64QAM, the first MCS table further comprises at least one item with a QPSK modulation mode in the second MCS table, and the MCS number corresponding to the item with the QPSK modulation mode in the second MCS table cannot be only the item corresponding to the continuous maximum K MCS numbers, wherein K is equal to 4 or is a positive integer smaller than 5 or is a positive integer, and/or the first MCS table further comprises at least one item with a 16QAM modulation mode in the second MCS table. The modulation modes in the entries of the second MCS table only comprise QPSK, 16QAM and 64QAM, and the entries in the first MCS table refer to one modulation mode and one TBS number corresponding to each MCS number in the first MCS table; the item in the second MCS table refers to a modulation scheme and a TBS number corresponding to each MCS number in the second MCS table.

It should be noted that the first MCS table described in this embodiment may be any one of the six first MCS tables in the foregoing embodiment, and details are not described here.

Specifically, the determining the modulation order and the coding block size according to the first MCS table and the received first MCS number includes:

and determining the size of the coding block according to the first TBS number, the first PRB number and the first TBS table.

The first PRB number is the PRB number allocated to the UE by the base station; alternatively, the first number of PRBs is a maximum integer equal to or less than a product of a number of PRBs allocated to the UE and a specific coefficient.

The value range of the TBS numbers in the first TBS table is 0-a, where a is a positive integer less than or equal to 26.

In this embodiment, reference may be made to the above embodiments for descriptions of the first TBS table and the second TBS table, which are not repeated herein.

Further, the UE receives the PDSCH according to the modulation order and the code block size.

As shown in fig. 5, an embodiment of the present invention further provides an apparatus 50 for notifying a CQI, where the apparatus 50 includes:

an obtaining module 51, configured to obtain a first CQI table;

the first CQI table may be predefined by the UE, or may be notified to the UE by the base station, or selected by the UE from at least two predefined tables according to a downlink channel status. Specifically, the method for the base station to notify the UE may be that the base station selects one of the at least two predefined tables according to the downlink channel status or the downlink channel status and reports the selected one to the base station. The CQI table is used to describe the mapping relationship between CQI numbers and entries, that is, the mapping relationship is not limited to the table, but may also be expressed by expression.

The first acquiring module 52: the first CQI table is used for acquiring a first CQI number according to the first CQI table acquired by the acquiring module 51;

the transmission module 53: the first CQI number is used for sending the first CQI number known by the first acquisition module 52 to the base station; so that the base station determines a first Modulation and Coding Scheme (MCS) number according to the first CQI number;

the first CQI table obtained by the obtaining module 51 includes:

Wherein, the item that at least one modulation mode in the second CQI table in the first CQI table acquired by the acquisition module is QPSK includes:

Wherein, the item that at least one modulation mode in the second CQI table in the first CQI table acquired by the acquisition module is 16QAM includes:

Further, the first CQI table acquired by the acquiring module 51 further includes: at least one modulation mode in the second CQI table is an item of 64 QAM.

Specifically, the item of which at least one modulation mode is 64QAM in the first CQI table acquired by the acquiring module includes:

the modulation modes in the second CQI table are all items of 64QAM, or;

Further, the spectrum efficiency of the corresponding item with the smallest CQI number in the items with the modulation scheme higher than 64QAM in the first CQI table obtained by the obtaining module 51 is equal to the spectrum efficiency of the corresponding item with the largest CQI number in all the items with the modulation scheme of 64QAM in the second CQI table; or the spectral efficiency of the T entries with the minimum CQI number in the entries with the modulation schemes higher than 64QAM in the first CQI table is equal to or approximately equal to the spectral efficiency of the T entries with the maximum CQI number in all the entries with the modulation schemes 64QAM in the second CQI table, where T is equal to any one of natural numbers from 1 to 5.

Optionally, the spectrum efficiency of the entry with the largest CQI number corresponding to the entry with the modulation scheme higher than 64QAM in the first CQI table is:

alternatively, 7.4063;

alternatively, 7.432.

Optionally, the spectral efficiencies of the X entries with the largest CQI numbers in the first CQI table are arranged into an arithmetic progression or an approximate arithmetic progression according to the order of the spectral efficiencies from small to large; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an arithmetic progression according to the sequence of the spectral efficiencies from small to large, which means that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is equal to a constant from the second item of the X items according to the sequence of the spectral efficiencies from small to large; the spectral efficiencies of the X items with the largest CQI number in the first CQI table are arranged into an approximately equal difference number array according to the sequence of the spectral efficiencies from small to large, and the sequence refers to that the difference between the spectral efficiency of each item and the spectral efficiency of the previous item is within the range of subtracting a preset value from a constant and adding the preset value from the constant from the second item in the X items according to the sequence of the spectral efficiencies from small to large; x is an integer greater than 2;

alternatively, 7.4063;

alternatively, 7.432.

Optionally, the spectral efficiency of the term with the modulation mode higher than 64QAM in the first CQI table includes at least one group of the following values:

{5.5547 6.1805 6.8062 7.432}，

{6.1805 6.8062 7.432}，

{5.5547 6.1797 6.8047 7.4297}，

{6.1797 6.8047 7.4297}，

{5.5547 6.1719 6.7891 7.4063}，

{6.1719 6.7891 7.4063}，

{5.5547 6.4934 7.432}，

{6.4934 7.432}，

{5.5547 6.4922 7.4297}，

{6.4922 7.4297}，

{5.5547 6.4805 7.4063}，

{6.4805 7.4063}，

{5.5547 6.4844 7.4063}，

{6.4844 7.4063}，

{5.5547 6.0240 6.4934 6.9627 7.432}，

{6.0234 6.4922 6.9609 7.4297}，

{5.5547 6.0234 6.4922 6.9609 7.4297}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0176 6.4805 6.9434 7.4063}，

{6.0176 6.4805 6.9434 7.4063}，

{5.5547 6.0156 6.4844 6.9453 7.4063}，

{6.0156 6.4844 6.9453 7.4063}，

{5.5547 5.9302 6.3056 6.6811 7.0565 7.432}，

{5.9302 6.3056 6.6811 7.0565 7.432}，

{5.5547 5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.9297 6.3047 6.6797 7.0547 7.4297}，

{5.5547 5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.9250 6.2953 6.6656 7.0360 7.4063}，

{5.5547 5.9219 6.2969 6.6641 7.0391 7.4063}，

{5.9219 6.2969 6.6641 7.0391 7.4063}。

further, the value range of the CQI number in the first CQI table acquired by the acquiring module 51 is the same as the value range of the CQI number in the second CQI table.

The MCS notification apparatus shown in fig. 5 is capable of performing corresponding steps in the above method embodiment, and for the effect achieved by the method, reference may be made to the description of the above method embodiment.

As shown in fig. 6, an embodiment of the present invention further provides an apparatus 60 for notifying an MCS, where the apparatus 60 includes:

an obtaining module 61, configured to obtain a first CQI table and a first MCS table;

The receiving module 62: the CQI number is determined by the UE according to a first CQI table;

the determination module 63: the acquiring module is used for acquiring a first CQI table, a first MCS table acquired by the acquiring module and a first CQI number received by the receiving module 62, and determining the first MCS number;

the sending module 64: means for transmitting the determined first MCS number to the UE;

the first CQI table acquired by the acquiring module 61 includes:

items with modulation higher than 64 QAM;

The first MCS table acquired by the acquiring module includes:

items with modulation higher than 64 QAM;

Wherein the determining module 63 is specifically configured to:

determining a first TBS number and a first MCS number according to the acquired first PRB number, a first CQI table acquired by the acquisition module, a first MCS table acquired by the acquisition module, the first TBS table and the received first CQI number;

Optionally, a value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26, or a value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and a size of a transmission block corresponding to the value range of the TBS number in the first TBS table being 0-26 is the same as a size of a transmission block corresponding to the value range of the TBS number in the second TBS table being 0-26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

Or optionally, the value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26, or the value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and the size of a transport block corresponding to the value range of the TBS number in the first TBS table is 0-C, which is the same as the size of a transport block corresponding to the value range of the TBS number in the second TBS table is 0-C, where C is a non-negative integer less than or equal to 26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

Wherein the determining module 63 comprises:

the first determination sub-module 631: the modulation method comprises the steps of determining a first modulation mode and a first spectrum efficiency corresponding to a received first CQI number according to a first CQI table acquired by an acquisition module and the first CQI number received by a receiving module;

the second determination submodule 632: obtaining a first transmission block size transmitted to the UE according to the obtained first PRB number and the first spectrum efficiency determined by the first determining submodule;

and obtaining a first TBS number corresponding to the first transport block size and the first PRB number determined by the second determining submodule in the first TBS table according to the first TBS table.

Optionally, the first TBS table includes at least one of TBS number Y1, TBS number Y2, TBS number Y3, and TBS number Y4_1-Y4_ 5. For the description of the corresponding items of the TBS numbers in the first TBS table, reference may be made to the above method embodiments, which are not repeated herein.

Further, the first CQI table acquired by the acquiring module may further include:

at least one modulation mode in the second CQI table is an item of 64 QAM.

Specifically, the item, in the first CQI table and the item, in the second CQI table, of which the at least one modulation mode is 64QAM, acquired by the acquiring module includes:

the modulation modes in the second CQI table are all items of 64QAM, or;

Further, the spectrum efficiency of the corresponding item with the smallest CQI number in the items with the modulation scheme higher than 64QAM in the first CQI table obtained by the obtaining module is equal to the spectrum efficiency of the corresponding item with the largest CQI number in all the items with the modulation scheme of 64QAM in the second CQI table; alternatively, the first and second electrodes may be,

Further, the value range of the CQI number in the first CQI table acquired by the acquisition module is the same as the value range of the CQI number in the second CQI table.

Wherein, the item that at least one modulation mode in the second MCS table in the first CQI table acquired by the acquiring module is QPSK includes:

Wherein, the item that at least one modulation mode in the second MCS table in the first CQI table acquired by the acquisition module is 16QAM includes:

Further, the first MCS table obtained by the obtaining module may further include: at least one modulation mode in the second MCS table is an item of 64 QAM.

Specifically, the item, in the second MCS table in the first CQI table, for which at least one modulation scheme is 64QAM, acquired by the acquiring module includes:

Further, at least one item of 64QAM modulation scheme in the second MCS table includes: the TBS number of the corresponding item with the lowest MCS number in all items of which the modulation mode is higher than 64QAM in the first MCS table acquired by the acquisition module is the same as the TBS number of the item with the highest MCS number in all items of which the modulation mode is 64QAM in the second MCS table; alternatively, the first and second electrodes may be,

Further, the value range of the MCS number in the first MCS table obtained by the obtaining module is the same as the value range of the MCS number in the second MCS table.

Optionally, the first MCS table may further include at least one of tables D1, D2, D3, D4 or D5, where any one of the tables includes one MCS number, and a modulation order and a TBS number corresponding to the MCS number; the above method embodiments can be referred to in table D1, table D2, table D3, table D4, and table D5, which are not repeated herein.

The MCS notification apparatus shown in fig. 6 can perform the corresponding steps in the above method embodiment, and refer to the description of the above method embodiment specifically, and the effect achieved by the apparatus can also refer to the description of the above method embodiment.

As shown in fig. 7, an embodiment of the present invention further provides an apparatus 70 for notifying an MCS, where the apparatus 70 includes:

an obtaining module 71, configured to obtain a first CQI table and a first MCS table;

wherein, the first CQI table may be predefined by a protocol, and the UE is preset according to a protocol specification or is pre-stored by the UE; or the UE is selected from at least two predefined tables according to the downlink channel state; or the base station may notify the UE, specifically, the method for the base station to notify the UE may be that the base station selects one of at least two predefined tables according to the uplink channel state or the downlink channel state and notifies the selected one of the at least two predefined tables to the UE. The CQI table is used to describe the mapping relationship between the CQI number and the entry, the mapping relationship of the CQI table in the embodiment of the present invention is only an example for facilitating understanding of the present invention, and the representation form of the CQI table in the present invention includes but is not limited to this, that is, the CQI table may have various combinations, as long as the mapping relationship between the CQI number and the entry can be embodied, which all belong to the protection scope of the present invention.

The receiving module 72: the CQI number is determined by the UE according to a first CQI table;

the determination module 73: the receiving module is configured to determine a first MCS number according to the first CQI table acquired by the acquiring module, the first MCS table acquired by the acquiring module, and the first CQI number received by the receiving module 72;

the sending module 74: means for transmitting the first MCS number determined by the determining means to the UE;

wherein, the first CQI table acquired by the acquisition module includes: items with modulation higher than 64 QAM; the item in the first CQI table refers to a modulation mode, a coding rate and a spectrum efficiency corresponding to each CQI number in the first CQI table;

the first MCS table acquired by the acquiring module includes:

items with modulation higher than 64 QAM;

at least one item of the second MCS table, where at least one item of the modulation scheme is QPSK, includes combinations of at least one item of the second MCS table, where at least one item of the second MCS table is QPSK, except for a first combination (which is called a first combination (considering that the first combination is used to name from the first beginning, and is substantially the same as the second combination in the corresponding embodiment of fig. 2), where the first combination is K items with the largest consecutive MCS numbers of QPSK in the second MCS table, where K is equal to 4 or is a positive integer smaller than 5 or is a positive integer; and/or at least one item with a modulation mode of 16QAM in the second MCS table;

The first MCS table used by the MCS notification apparatus 70 may be the same as the first MCS table used by the MCS notification apparatus 60. The two apparatuses are different in that the first CQI table used by the MCS notification apparatus 70 may be different from the first CQI table used by the MCS notification apparatus 60, but the first CQI tables used by both apparatuses include an entry having a modulation scheme higher than 64 QAM.

Wherein, the item that at least one modulation mode in the second MCS table in the first MCS table acquired by the acquiring module is QPSK includes:

the modulation mode in the second MCS table is a partial item of QPSK, and the MCS numbers corresponding to the partial item are not equally spaced; alternatively, the first and second electrodes may be,

Wherein, the item of at least one modulation mode of the second MCS table in the first MCS table acquired by the acquiring module being 16QAM includes:

Further, the first MCS table obtained by the obtaining module further includes: at least one modulation mode in the second MCS table is an item of 64 QAM.

Specifically, the item, in the first MCS table, of the second MCS table obtained by the obtaining module, in which at least one modulation mode is 64QAM includes:

and the modulation mode in the second MCS table is partial item of 64QAM, and at least one item except the item with the minimum MCS number in all the items of 64QAM modulation modes in the second MCS table.

Further, the item, obtained by the obtaining module, of the second MCS table in the first MCS table, where at least one modulation scheme is 64QAM includes:

the TBS number of the corresponding entry with the lowest MCS number among all entries in the first MCS table having a modulation scheme higher than 64QAM obtained by the obtaining module is the same as the TBS number of the entry with the highest MCS number among all entries in the second MCS table having a modulation scheme of 64 QAM.

The MCS notification apparatus shown in fig. 7 can perform the corresponding steps in the above method embodiment, and refer to the description of the above method embodiment specifically, and the effect achieved by the apparatus can also refer to the description of the above method embodiment.

As shown in fig. 8, an embodiment of the present invention further provides an apparatus 80 for notifying an MCS, where the apparatus 80 includes:

an obtaining module 81, configured to obtain a first MCS table;

The receiving module 82: the first MCS number is used for receiving the base station to send; the first MCS number is determined by the base station according to a first MCS table;

the determination module 83: for determining a modulation order and a coding block size according to a first MCS table and a first MCS number received by the receiving module 82;

wherein, the first MCS table acquired by the acquiring module includes:

items with modulation higher than 64 QAM;

Wherein the determining module 83 includes:

the first determination sub-module 831: the base station is used for determining a first TBS number and a modulation order according to a first MCS table and a received first MCS number acquired by the acquisition module;

the second determination submodule 832: the code block size is determined according to the first TBS number, the first PRB number and the first TBS table;

The item, obtained by the obtaining module, of the second MCS table in the first MCS table, for which at least one modulation scheme is QPSK, includes:

Wherein, the item, obtained by the obtaining module, of the second MCS table in the first MCS table for which at least one modulation scheme is 16QAM includes:

Further, the item, in the second MCS table, of which at least one modulation scheme is 64QAM, in the first MCS table acquired by the acquiring module includes:

the TBS number of the corresponding item with the lowest MCS number in all the items with the modulation modes higher than 64QAM in the first MCS table is the same as the TBS number of the item with the highest MCS number in all the items with the modulation modes of 64QAM in the second MCS table; or, the TBS numbers of the corresponding R entries with the smallest MCS number among the entries with modulation schemes higher than 64QAM in the first MCS table may be equal to the TBS numbers of the R entries with the largest MCS number among all the entries with modulation schemes of 64QAM and MCS numbers not higher than 27 in the second MCS table; wherein R is a natural number.

Optionally, the first MCS table further includes at least one of the tables D1, D2, D3, D4, or D5, where any one of the tables includes an MCS number, and a modulation order and a TBS number corresponding to the MCS number, and the tables D1, D2, D3, D4, and D5 may refer to the description in the foregoing method embodiments.

The MCS notification apparatus shown in fig. 8 can perform the corresponding steps in the above method embodiment, and refer to the description of the above method embodiment specifically, and the effect achieved by the apparatus can also refer to the description of the above method embodiment.

As shown in fig. 9, an apparatus 90 for notifying a channel quality indicator CQI is further provided in an embodiment of the present invention, including: a processor 91 and a transmitter 92;

the processor is configured to obtain a first CQI table; and is used for learning a first CQI number according to the first CQI table;

the transmitter is: for sending the processor first CQI number to a base station; so that the base station determines a first Modulation and Coding Scheme (MCS) number according to the first CQI number;

the first CQI table obtained by the processor includes:

Wherein, the processor obtains at least one item of QPSK modulation mode in the second CQI table in the first CQI table, and the item includes:

Wherein, the at least one item of which the modulation mode in the second CQI table is 16QAM in the first CQI table acquired by the processor includes:

Wherein the first CQI table obtained by the processor further includes:

at least one modulation mode in the second CQI table is an item of 64 QAM.

Wherein, the item of which at least one modulation mode is 64QAM in the first CQI table acquired by the processor includes:

the modulation modes in the second CQI table are all items of 64QAM, or;

The spectral efficiency of the corresponding item with the smallest CQI number in the items with the modulation schemes higher than 64QAM in the first CQI table obtained by the processor is equal to the spectral efficiency of the corresponding item with the largest CQI number in all the items with the modulation schemes of 64QAM in the second CQI table.

Wherein the value range of the CQI number in the first CQI table obtained by the processor is the same as the value range of the CQI number in the second CQI table.

For specific implementation of functions of each device in the CQI notification apparatus 90 in this embodiment, reference may be made to the description in the foregoing CQI notification method embodiment, and details are not described here again.

As shown in fig. 10, an embodiment of the present invention further provides a device 10 for notifying a modulation and coding scheme MCS, including:

a processor 101, configured to obtain a first CQI table and a first MCS table;

the receiver 102: the CQI number is determined by the UE according to a first CQI table;

the processor: a first MCS number is determined according to the first CQI table acquired by the processor, the acquired first MCS table and the first CQI number received by the receiver;

the transmitter 103: means for transmitting the first MCS number determined by the processor to the UE;

wherein, the first CQI table obtained by the processor includes:

items with modulation higher than 64 QAM;

The first MCS table obtained by the processor includes:

items with modulation higher than 64 QAM;

Wherein the processor is specifically configured to:

determining a first TBS number and a first MCS number according to the acquired first PRB number, a first CQI table acquired by the processor, a first MCS table acquired by the processor and a received first CQI number;

the first TBS table comprises at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number; the first TBS table is a TBS table corresponding to the first MCS table;

the value range of the TBS number in the first TBS table is 0-a, where a is a positive integer less than or equal to 26, or the value range of the TBS number in the first TBS table is 0-B, where B is a positive integer greater than or equal to 26, and the size of the transport block corresponding to the value range of the TBS number in the first TBS table being 0-26 is the same as the size of the transport block corresponding to the value range of the TBS number in the second TBS table being 0-26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a transmission block size corresponding to each PRB number.

Wherein the processor is specifically configured to:

determining a first modulation mode and a first spectrum efficiency corresponding to a received first CQI number according to a first CQI table acquired by a processor and the first CQI number received by the receiver;

acquiring a first transmission block size transmitted to the UE according to the first PRB number and the determined first spectrum efficiency;

and obtaining a first TBS number corresponding to the determined first transport block size and the first PRB number in the first TBS table according to the first TBS table.

The processor obtains an entry that at least one modulation mode in the second CQI table is QPSK in the first CQI table, including:

Wherein the first CQI table obtained by the processor further includes:

at least one modulation mode in the second CQI table is an item of 64 QAM.

Wherein, the item of the first CQI table and the second CQI table obtained by the processor, in which the at least one modulation scheme is 64QAM, includes:

the modulation modes in the second CQI table are all items of 64QAM, or;

The spectrum efficiency of the item with the smallest CQI number corresponding to the item with the modulation mode higher than 64QAM in the first CQI table acquired by the processor is equal to the spectrum efficiency of the item with the largest CQI number corresponding to all the items with the modulation mode of 64QAM in the second CQI table.

The value range of the CQI number in the first CQI table acquired by the processor is the same as the value range of the CQI number in the second CQI table.

Wherein, the item of at least one modulation scheme being QPSK in the second MCS table in the first CQI table acquired by the processor includes:

Wherein, the at least one item of which the modulation mode is 16QAM in the second MCS table in the first CQI table acquired by the processor includes:

Wherein, the first MCS table obtained by the processor further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

Wherein, the item of at least one modulation mode of 64QAM in the second MCS table in the first CQI table acquired by the processor includes:

the TBS number of the corresponding entry with the lowest MCS number among all entries in the first MCS table having a modulation scheme higher than 64QAM is the same as the TBS number of the entry with the highest MCS number among all entries in the second MCS table having a modulation scheme of 64 QAM.

Wherein, the value range of the MCS number in the first MCS table acquired by the processor is the same as the value range of the MCS number in the second MCS table.

The detailed implementation of each device function in the MCS notification apparatus 10 in this embodiment may refer to the description in the MCS notification method embodiment corresponding to fig. 2, and is not described herein again.

As shown in fig. 11, an apparatus 11 for notifying a modulation and coding scheme MCS according to an embodiment of the present invention includes:

a processor 111, configured to obtain a first MCS table;

the receiver 112: the first MCS number is used for receiving the base station to send; the first MCS number is determined by the base station according to the first MCS table acquired by the processor;

the processor 111: the modulation order and the coding block size are determined according to the first MCS table acquired by the processor and the first MCS number received by the receiver;

wherein the first MCS table acquired by the processor includes:

items with modulation higher than 64 QAM;

Wherein the processor is specifically configured to:

determining a first TBS number and a modulation order according to the first MCS table acquired by the processor and the received first MCS number;

Wherein, the processor obtains an item that at least one modulation mode of the second MCS table in the first MCS table is QPSK, and the item comprises:

Wherein, the at least one item of the second MCS table in the first MCS table obtained by the processor with the modulation scheme of 16QAM includes:

Wherein, the first MCS table obtained by the processor further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

Wherein, the item of at least one modulation mode of the second MCS table in the first MCS table acquired by the processor being 64QAM includes:

Wherein, the at least one item of 64QAM modulation scheme in the second MCS table in the first MCS table obtained by the processor includes:

The value range of the MCS number in the first MCS table acquired by the processor is the same as the value range of the MCS number in the second MCS table.

The detailed implementation of each device function in the MCS notification apparatus 11 in this embodiment may refer to the description in the MCS notification method embodiment corresponding to fig. 3, and is not described herein again.

Fig. 12 shows that the present invention provides a device for notifying a modulation and coding scheme MCS, comprising:

a processor 121, configured to obtain a first CQI table and a first MCS table;

the receiver 122: the CQI number is determined by the UE according to a first CQI table;

the processor 121: for determining a first MCS number from the obtained first CQI table, the obtained first MCS table and a first CQI number received by the receiver;

the transmitter 123: for transmitting the first MCS number determined by the processor 121 to the UE;

wherein, the first CQI table obtained by the processor includes: items with modulation higher than 64 QAM; the items in the first CQI table obtained by the processor refer to a modulation mode, a coding rate, and a spectrum efficiency corresponding to each CQI number in the first CQI table obtained by the processor;

the first MCS table obtained by the processor includes:

items with modulation higher than 64 QAM;

Wherein, the item of at least one modulation scheme being QPSK in the second MCS table in the first MCS table acquired by the processor includes:

Wherein, the at least one item of the second MCS table in the first MCS table acquired by the processor with the modulation mode of 16QAM includes:

Wherein, the first MCS table obtained by the processor further includes:

at least one modulation mode in the second MCS table is an item of 64 QAM.

Wherein the item, obtained by the processor, of the second MCS table in the first MCS table, for which at least one modulation scheme is 64QAM includes:

It should be noted that the apparatuses shown in fig. 9 to 12 can respectively implement the methods provided by the above method embodiments, and specifically, refer to the description of the above embodiments. The effects achieved by this are also described in the above examples.

The detailed implementation of each device function in the MCS notification apparatus 11 in this embodiment may refer to the description in the MCS notification method embodiment corresponding to fig. 4, and is not described herein again.

It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. 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.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for notifying Channel Quality Indicator (CQI), comprising:

determining a first CQI number according to a first CQI table;

sending the first CQI number to a base station;

the first CQI table at least includes a mapping relationship between a CQI number, a modulation scheme, and spectrum efficiency as follows:

。

2. the method of claim 1,

the spectrum efficiency 5.5547 corresponding to the CQI number 12 and the modulation mode 256QAM in the first CQI table is equal to the spectrum efficiency corresponding to the CQI number 15 and the modulation mode 64QAM in the second CQI table;

wherein the second CQI table at least includes a mapping relationship of CQI number, modulation scheme, and spectral efficiency.

3. The method of claim 2,

the value range of the CQI numbers in the first CQI table is the same as the value range of the CQI numbers in the second CQI table, and the value range is 0 to 15.

4. The method according to claim 3, wherein the spectral efficiency corresponding to CQI number 15 and modulation scheme 256QAM in the first CQI table is:

4/3 is multiplied by the spectrum efficiency corresponding to the CQI number 15 and the modulation mode 64QAM in the second CQI table; alternatively, the first and second electrodes may be,

7.4063。

5. the method according to any of claims 2 to 4, wherein the first CQI table and the second CQI table satisfy any of the following relationships:

the values of the modulation mode and the spectral efficiency corresponding to the CQI numbers 1,2 and 3 in the first CQI table are respectively the same as the values of the modulation mode and the spectral efficiency corresponding to the CQI numbers 1, 3 and 5 in the second CQI table; or the values of the modulation scheme and the spectral efficiency corresponding to the CQI numbers 4,5 and 6 in the first CQI table are respectively the same as the values of the modulation scheme and the spectral efficiency corresponding to the CQI numbers 7, 8 and 9 in the second CQI table; or

The values of the modulation scheme and the spectral efficiency corresponding to the CQI numbers 7, 8, 9, 10, and 11 in the first CQI table are the same as the values of the modulation scheme and the spectral efficiency corresponding to the CQI numbers 10, 11, 12, 13, and 14 in the second CQI table, respectively.

6. The method according to any of claims 2 to 4, wherein the second CQI table comprises at least the following mapping relationship between CQI number, modulation mode and spectrum efficiency:

。

7. the method of claim 1, further comprising:

receiving a first modulation coding scheme, MCS, number from the base station;

determining a TBS number and a modulation order of a first transport block size according to a mapping relation between the MCS number and the modulation order and the first MCS number;

and determining the size of the coding block according to the first TBS number, the first Physical Resource Block (PRB) number, at least one PRB number corresponding to each TBS number and the mapping relation of the size of the transmission block corresponding to each PRB number.

8. The method of claim 7, wherein the first number of PRBs is a number of PRBs allocated by the base station for the UE; alternatively, the first number of PRBs is a maximum integer equal to or less than a product of a number of PRBs allocated to the UE and a specific coefficient.

9. The method of claim 7 or 8, wherein the first TBS number is a first TBS number in a first TBS table, and the first TBS table comprises a mapping relationship between at least one PRB number corresponding to each TBS number and a transport block size corresponding to each PRB number;

the value range of the TBS number in the first TBS table is 0-B, wherein B is a positive integer greater than or equal to 26, and the value range of the TBS number in the first TBS table is that the size of a transmission block corresponding to 0-C is the same as the size of a transmission block corresponding to 0-C of the TBS number in the second TBS table, wherein C is a non-negative integer less than or equal to 26; the value range of the TBS numbers in the second TBS table is 0-26, and the second TBS table includes at least one PRB number corresponding to each TBS number and a mapping relationship of the transmission block size corresponding to each PRB number.

10. The method of claim 9,

the first TBS table at least includes at least one of the following TBS numbers Y2, and the TBS number Y2, where any one of the following TBS numbers includes one PRB number and one transport block size corresponding to the PRB number:

。

11. the method of claim 7, wherein the mapping relationship between the MCS number and the modulation order is included in a first MCS table, and wherein the first MCS table includes at least the following mapping relationship between the MCS number and the modulation order:

the modulation mode corresponding to the modulation order 2 is quadrature phase shift keying QPSK, the modulation mode corresponding to the modulation order 4 is 16QAM, the modulation mode corresponding to the modulation order 6 is 64QAM, and the modulation mode corresponding to the modulation order 8 is 256 QAM.

12. The method of claim 11, wherein the MCS number in the first MCS table has a same value range as the MCS number in the second MCS table, and wherein the value range is 0 to 31.

13. The method of claim 12, wherein the second MCS table comprising at least the following MCS number to modulation order mapping relationship comprises:

。

14. a communications apparatus, comprising:

an acquisition module I: for determining a first CQI number from a first CQI table;

a sending module: the first CQI number is used for sending the first CQI number acquired by the acquisition module to a base station;

。

15. the apparatus of claim 14,

16. The apparatus of claim 15,

17. The apparatus according to claim 16, wherein the spectral efficiency corresponding to CQI number 15 and modulation scheme 256QAM in the first CQI table is:

multiplying 4/3 by the spectrum efficiency corresponding to the CQI number 15 and the modulation mode of 64QAM in the second CQI table;

alternatively, 7.4063.

18. The apparatus according to any of claims 15 to 17, wherein the first CQI table and the second CQI table satisfy any of the following relationships:

the values of the modulation mode and the spectral efficiency corresponding to the CQI numbers 1,2 and 3 in the first CQI table are respectively the same as the values of the modulation mode and the spectral efficiency corresponding to the CQI numbers 1, 3 and 5 in the second CQI table; or

The values of the modulation mode and the spectral efficiency corresponding to the CQI numbers 4,5 and 6 in the first CQI table are respectively the same as the values of the modulation mode and the spectral efficiency corresponding to the CQI numbers 7, 8 and 9 in the second CQI table; or

19. The apparatus according to any of claims 15 to 17, wherein the second CQI table comprises at least the following mapping relationship between CQI number, modulation scheme and spectral efficiency:

。

20. the apparatus of claim 14, further comprising:

a receiving module, configured to receive a first Modulation and Coding Scheme (MCS) number from the base station;

the first determining submodule is used for determining the TBS number and the modulation order of the first transmission block size according to the mapping relation between the MCS number and the modulation order and the first MCS number;

and the second determining submodule is used for determining the size of the coding block according to the mapping relation between the first TBS number and the first Physical Resource Block (PRB) number, and the at least one PRB number corresponding to each TBS number and the size of the transmission block corresponding to each PRB number.

21. The apparatus of claim 20, wherein the first number of PRBs is a number of PRBs allocated by the base station for a UE; alternatively, the first number of PRBs is a maximum integer equal to or less than a product of a number of PRBs allocated to the UE and a specific coefficient.

22. The apparatus of claim 20 or 21, wherein the first TBS number is a first TBS number in a first TBS table, and the first TBS table comprises a mapping relationship between at least one PRB number corresponding to each TBS number and a transport block size corresponding to each PRB number;

23. The apparatus of claim 22,

the first TBS table at least includes TBS number Y2 and at least one corresponding TBS number Y2, where any one includes one PRB number and one transport block size corresponding to the PRB number:

24. the apparatus of claim 20, wherein the mapping relationship between the MCS number and the modulation order is included in a first MCS table, and wherein the following mapping relationship between the MCS number and the modulation order is included in the first MCS table:

25. The apparatus of claim 24, wherein the MCS number in the first MCS table has a same value range as the MCS number in the second MCS table, and wherein the value range is 0 to 31.

26. The apparatus of claim 25, wherein the second MCS table comprises at least the following MCS number to modulation order mapping relationship:

。

27. a computer-readable storage medium having stored thereon a computer program or instructions which, when executed by a processor, implement the method of any one of claims 1 to 13.

28. A communication device comprising a memory and a processor, characterized in that:

the memory has stored thereon a computer program or instructions,

the processor invokes the program or instructions to cause the communication device to implement the method of any of claims 1 to 13.