RU2803424C1 - Communication method and communication hardware component - Google Patents

Abstract

FIELD: communications.

SUBSTANCE: terminal device of the transmitting side or the receiving side can determine, based on the number of REs that are in the first time-frequency resource and are used to transmit the first information, the number of REs that are in the first time-frequency resource and are used for data transmission. The first time-frequency resource includes a first unit of time in the time domain and includes a data channel resource in the frequency domain. The first information includes at least one of the following: a control channel, a control channel demodulation pilot, a data channel demodulation pilot, second stage control information, PTRS, or CSI-RS.

EFFECT: ability to determine the number of resource elements (RE) used for data transfer in a V2X scenario.

20 cl, 7 dwg

Description

[0001] This application claims priority to International Patent Application No. PCT/CN2020/074039, filed on January 23, 2020 with the National Intellectual Property Administration of China and entitled "COMMUNICATION METHOD AND COMMUNICATION APPARATUS", which is incorporated herein in its entirety by this reference.

TECHNICAL FIELD

[0002] This application relates to the field of communications and, more particularly, to a communication method and a communication hardware component.

BACKGROUND OF THE ART

[0003] In a communications system, data is organized into transport blocks (TBs) for transmission. Before transmitting a TB, you must first determine the transport block size (TBS) based on the number of resource elements (RE) used to transfer the data.

[0004] The current standard specifies how the number of REs used to transmit data over the air interface should be determined. However, in a vehicle to everything (V2X) scenario, since the frame structure is different from the air interface frame structure, the methods specified in the standard are no longer applicable. Therefore, for a V2X scenario, it is necessary to provide a method to determine the number of REs used for data transmission.

SUMMARY OF THE INVENTION

[0005] This application provides a communication method and a communication hardware component for determining the number of REs used to transmit data in V2X scenarios.

[0006] According to a first aspect, a communication method is provided. The method may be applied to a V2X terminal device of a sending end or may be applied to a V2X terminal device of a receiving end. The method includes: determining, based on the number of REs that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data. The first time-frequency resource includes a first unit of time in the time domain and includes a data channel resource in the frequency domain. The first information includes at least one of the following: a control channel, a control channel demodulation pilot, a data channel demodulation pilot, second stage control information, a Phase tracking reference signal (PTRS), and an information reference signal about the channel state (Channel state information reference signal, CSI-RS).

[0007] Optionally, in a scenario in which the method is applied to a transmitting end terminal device, the method may further include: determining a transport block size based on the determined number of REs used for data transmission; and sending the transport block.

[0008] Optionally, in a scenario in which the method is applied to a receiving end terminal device, the method may further include: determining a transport block size based on the determined number of REs used to transmit data; and receiving the transport block. Receiving a transport block means performing channel decoding on the transport block.

[0009] In this application, the data channel resource is used for sidelink communication. A data channel resource may include several sub-channels.

[0010] The first time unit is used for point-to-point communication and may include symbols other than the first symbol and the last symbol in the point-to-point communication slot. For example, the first character in a direct link communication slot may be used for automatic gain control (AGC), and the last character is a break character (GAP).

[0011] According to the method provided in this application, the number of REs used for transmitting direct connection data can be determined based on the numbers of REs used for transmitting the control channel, control channel demodulation pilot, data channel demodulation pilot, information second stage control, CSI-RS and/or PTRS. In addition, the transport block size for a direct connection can be determined based on the number of REs used to transmit direct connection data.

[0012] Optionally, the first time-frequency resource includes first sub-resources, wherein the first sub-resource includes a first unit of time in the time domain and includes one subchannel in a data channel resource in the frequency domain, and is a positive integer. The first information includes first sub-information and second sub-information, wherein the first sub-information is a control channel, a control channel demodulation pilot and second stage control information, and the second sub-information includes at least one of: a data channel demodulation pilot , PTRS or CSI-RS.

[0013] Determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data includes: determining, based on the number of REs that are in each first sub-resource and that are used to transmit the second sub-information, the sum of the numbers of REs that are in each first sub-resource and that are used to transmit the data and the first sub-information; and determining, based on the sum of the numbers of REs that are in each first sub-resource and that are used to transmit data and first sub-information, and the number of REs that are in the first time-frequency resource and that are used to transmit the first sub-information, the number of REs that are in the first time-frequency resource and which are used for data transmission.

[0014] For example, in this application represents the number of symbols in the first time unit that are adjusted to calculate the transport block size of the data channel. may be 0 or may be one of 1, 2 and 3.

[0015] Optionally, the sum of the numbers of REs that are in the i ^-th first sub-resource in the first time-frequency resource and that are used to transmit data and first sub-information satisfies Formula (1):

(1)

[0016] represents the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used to transmit data and first sub-information, and i =0, 1, ..., ; represents the number of subcarriers in a physical resource block (PRB), represents the number of PRBs in the subchannel, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, and includes the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used for PTRS and/or CSI-RS transmission.

[0017] , described here and below, may be preconfigured (eg, as specified in a protocol) or may be configured by the network device to pool resources.

[0018] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies (2):

(2)

[0019] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, represents the sum of the numbers of REs that are in the first time-frequency resource and that are used to transmit the control channel and the control channel demodulation pilot signal in the first sub-information, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information in the first sub-information.

[0020] Optionally, the first time-frequency resource includes second sub-resources, wherein the second sub-resource includes a first unit of time in the time domain and includes one physical resource block, PRB, in a frequency domain data channel resource, and is a positive integer. The first information includes first sub-information and second sub-information, wherein the first sub-information is a control channel, a control channel demodulation pilot and second stage control information, and the second sub-information includes at least one of: a data channel demodulation pilot , PTRS or CSI-RS.

[0021] Determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data includes: determining, based on the number of REs that are in every second sub-resource and that are used to transmit the second sub-information, the sum of the numbers of REs that are in every second sub-resource and that are used to transmit the data and the first sub-information; and determining, based on the sum of the numbers of REs that are in every second sub-resource and that are used to transmit data and the first sub-information, and the number of REs that are in the first time-frequency resource and that are used to transmit the first sub-information, the number of REs that are in the first time-frequency resource and which are used for data transmission.

[0022] Optionally, the sum of the quantities of RE that are in the i ^-th second sub-resource in the first time-frequency resource and that are used to transmit data and first sub-information satisfies Formula (14):

(14)

[0023] represents the sum of the quantities of RE that are in the i ^-th second sub-resource and that are used to transmit data and first sub-information, and i =0, 1, ..., .

[0024] represents the number of subcarriers in the PRB, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot, represents the transport block correction factor, and includes the sum of the quantities of RE that are in the i ^-th second sub-resource and that are used for PTRS and/or CSI-RS transmission.

[0025] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (15):

(15)

[0026] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, represents the sum of the numbers of REs that are in the first time-frequency resource and that are used to transmit the control channel and the control channel demodulation pilot signal in the first sub-information, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information in the first sub-information.

[0027] Optionally, satisfies:

[0028] represents the number of symbols that are in the first time unit and that are used to transmit the control channel, and represents the number of PRBs that are in the data channel resource and that are used for control channel transmission.

[0029] For example, in this application satisfies Formula (4):

(4)

[0030] represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, represents the modulation order of the data channel, represents the equivalent bit rate scale factor of the second stage control information, represents the number of characters in the first time unit, represents the number of REs that are in the time-frequency resource formed by the symbol l in the first time unit and data channel resource, and which are used to transmit second stage control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of PRBs.

[0031] In a possible example determined based on at least one of the following:

the number of subcarriers occupied by the data channel pilot on symbol l in the first time unit;

the number of subcarriers occupied by PTRS on symbol l in the first time unit;

the number of subcarriers occupied by CSI-RS on symbol l in the first time unit; And

the number of subcarriers occupied by the control channel on symbol l in the first time unit.

[0032] For example, when determined based on the numbers of subcarriers occupied by the data channel pilot, PTRS, CSI-RS and control channel on symbol l in the first time unit, satisfies Formula (4c):

(4c)

[0033] is the number of subcarriers in the bandwidth for data link scheduling, is the number of subcarriers occupied by the data channel pilot on symbol l , is the number of subcarriers occupied by PTRS on symbol l , is the number of subcarriers occupied by CSI-RS on symbol l , and is the number of subcarriers occupied by the control channel on symbol l .

[0034] It should be understood that when not associated with one or more of the numbers of subcarriers occupied by the data channel pilot, PTRS, CSI-RS or control channel on symbol l , can be obtained by removing the corresponding parameter from Formula (4c).

[0035] For example, when determined based on the numbers of subcarriers occupied by the data channel pilot, PTRS, and control channel on symbol l , satisfies Formula (4d):

(4d)

[0036] When determined based on the number of subcarriers occupied by the control channel on symbol l , satisfies Formula (4e):

(4e)

[0037] Given that the numbers of subcarriers in the data channel scheduling bandwidth are the same on all symbols, can be represented as . In addition, on the l symbol, in which the control channel is not mapped, At the l symbol to which the control channel is mapped, the number of included control channel subcarriers is similar. More specifically, on the symbol l to which the control channel is mapped, . is the number that refers to the subcarriers available for the data channel in the frequency domain, and which is configured by the higher layer RRC. In this case, Formula (3) is transformed into Formula (5).

(5)

[0038] is a quantity that relates to the symbols available for the time domain control channel and that is configured by the higher layer. For the meaning of other parameters, refer to the above sections of the corresponding parameter descriptions.

[0039] It should be understood that in this application represents rounding up, and min(x, y) represents calculating the smaller of x and y.

[0040] For example, in this application satisfies any of Formulas from (7) to (10):

(7)

(8)

(9)

(10)

[0041] represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, represents the modulation order of the data channel or control channel, represents an equivalent bit rate scale factor of the second stage control information or represents a scale factor that relates to a resource for the second stage control information and which is indicated by the first control information, represents the number of spatial layers of the data channel; represents an upper limit on the number of REs occupied by second stage control information; And represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of PRBs.

[0042] In a possible example, to avoid influence of the reference signal in the TBS determination process, the value can be set to 0, 3, 6 or 9; or is a preconfigured integer from 0 to 11, that is can be any value in the set {0,1,2,3,4,5,6,7,8,9,10,11}.

[0043] In a possible example is a preconfigured fixed value of P, and P is a positive integer. For example, P equals 1024, 1536, or 2048; or P represents a preconfigured maximum encoding or decoding performance of control information of the terminal device.

[0044] In a possible example satisfies Formula (11):

(eleven)

[0045] represents the number of symbols in the first time unit excluding PSFCH. represents the number of subcarriers in the bandwidth for data link scheduling. represents the scaling factor of the resource used to transmit second stage control information, where 0< ≤1.

[0046] For example, satisfies Formula (11a) or (11b):

(11a)

(11b)

[0047] is a quantity that relates to symbols included in a direct connection communication slot and that is configured by a higher layer RRC, and represents the number of symbols occupied by the PSFCH and is related to the configuration period of the PSFCH. For example, when the PSFCH configuration period is 0, ; or when the PSFCH configuration period is 1, 2 or 4, or . Alternatively, based on the specific value of the PSFCH configuration period, , i.e. is any value in the set .

[0048] In a possible example, is the same on all symbols, i.e. , , , and i is not equal to j . In this case can be represented in the form . Accordingly, Formula (11) is transformed into:

[0049] In a possible example, given the resources occupied by the control channel, is given as part of the sum of the data channel RE numbers in the bandwidth for data channel scheduling, i.e. satisfies Formula (12):

(12)

[0050] represents the number of symbols in the first time unit excluding PSFCH. represents the number of subcarriers in the bandwidth for data link scheduling and represents a number that refers to subcarriers in the control channel bandwidth on symbol l and that is configured by the higher layer RRC. represents the scaling factor of the resource used to transmit second stage control information, where 0< ≤1.

[0051] In addition, regarding the possible significance refer to Formula (11a) or Formula (11b).

[0052] Moreover, given that the numbers of subcarriers included in the data channel scheduling bandwidth are the same on all symbols, can be represented as , And is the number of subcarriers in the bandwidth for data link scheduling. In addition, on the l symbol, in which the control channel is not mapped, At the l symbol to which the control channel is mapped, the number of included control channel subcarriers is similar. More specifically, on the symbol l to which the control channel is mapped, is the number that refers to the subcarriers available for the data channel in the frequency domain, and which is configured by the higher layer RRC. In this case, Formula (12) is transformed into Formula (13).

(13)

[0053] In the above example, the bandwidth for data channel scheduling is specified in the control channel.

[0054] Optionally, satisfies Formula (4a) or Formula (4b):

(4a)

(4b)

[0055] represents the scale factor of the bit rate of the second stage control information, represents the ^qth scale factor in the M scale factors configured in the resource pool to which the data channel resource belongs, and this scale factor is the bit rate scale factor of the second stage control information. Optionally, satisfies Formula (6):

(6)

(6a)

[0056] represents the allowable size of the second stage control information payload, represents the CRC bit length of the second stage control information, represents the bit rate of the data channel, represents the modulation order of the data channel, represents the number of characters in the first time unit, represents the number of REs that are in the time-frequency resource formed by the symbol l in the first time unit and data channel resource, and which are used to transmit second stage control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of PRBs, represents the ^qth scale factor in the M scale factors configured in the resource pool to which the data channel resource belongs, and this scale factor is the bit rate scale factor of the second stage control information.

[0057] Optionally, the first time-frequency resource includes first sub-resources, wherein the first sub-resource includes a first unit of time in the time domain and includes one subchannel in a data channel resource in the frequency domain, and is a positive integer.

[0058] The first information includes second stage control information and third sub-information, and said third sub-information includes at least one of the following: a data channel demodulation pilot, a control channel, a control channel demodulation pilot, PTRS or CSI -RS.

[0059] Determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data includes:

determining, based on the number of REs that are in each first sub-resource and which are used to transmit the third sub-information, the sum of the numbers of REs that are in each first sub-resource and that are used for transmitting data and control information of the second stage; And

determining, based on the sum of the numbers of REs that are in each first sub-resource and that are used to transmit data and control information of the second stage, and the number of REs that are in the first time-frequency resource and that are used to transmit the control information of the second stage, the number of REs, which are in the first time-frequency resource and which are used for data transmission.

[0060] Optionally, the sum of the numbers of REs that are in the i ^-th first sub-resource in the first time-frequency resource and that are used to transmit data and control information of the second stage satisfies Formula (14):

(14)

[0061] represents the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used to transmit data and control information of the second stage, and i = 0, 1, ..., .

[0062] represents the number of subcarriers in a physical resource block, PRB, represents the number of PRBs in the subchannel, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, and includes a number of REs that are in ^the ith first sub-resource and that are used to transmit at least one of the following: a control channel, a control channel demodulation pilot, PTRS, or CSI-RS.

[0063] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (15):

(15)

[0064] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information.

[0065] Optionally, the first time-frequency resource includes second sub-resources, wherein the second sub-resource includes a first unit of time in the time domain and includes one physical resource block, PRB, in a frequency domain data channel resource, and is a positive integer.

[0066] The first information includes second stage control information and third sub-information, and said third sub-information includes at least one of the following: a data channel demodulation pilot, a control channel, a control channel demodulation pilot, PTRS or CSI -RS.

[0067] Determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data includes:

determining, based on the number of REs that are in every second sub-resource and which are used to transmit the third sub-information, the sum of the numbers of REs that are in every second sub-resource and that are used to transmit data and control information of the second stage; And

determining, based on the sum of the numbers of REs that are in every second sub-resource and that are used to transmit data and control information of the second stage, and the number of REs that are in the first time-frequency resource and that are used to transmit the control information of the second stage, the number of REs, which are in the first time-frequency resource and which are used for data transmission.

[0068] Optionally, the sum of the numbers of REs that are in the i ^-th second sub-resource in the first time-frequency resource and that are used to transmit data and control information of the second stage satisfies Formula (16):

(16)

[0069] represents the sum of the quantities of RE that are in the i ^-th second sub-resource and that are used to transmit data and control information of the second stage, and i = 0, 1, ..., .

[0070] represents the number of subcarriers in the PRB, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, and includes a number of REs that are in the i ^-th second sub-resource and that are used to transmit at least one of the following: a control channel, a control channel demodulation pilot, PTRS, or CSI-RS.

[0071] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (17):

(17)

[0072] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information.

[0073] Optionally, the first time-frequency resource includes first sub-resources, wherein the first sub-resource includes a first unit of time in the time domain and includes one subchannel in a data channel resource in the frequency domain, and is a positive integer.

[0074] Determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data includes:

determining, based on the number of REs that are in each first sub-resource and that are used to transmit the first information, the number of REs that are in each first sub-resource and that are used for transmitting data.

[0075] The sum of the quantities of RE that are in the first sub-resources and which are used for data transmission is equal to the number of REs that are in the first time-frequency resource and which are used for data transmission.

[0076] Optionally, the number of REs that are in the i ^th first sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (20):

(20)

[0077] represents the number of REs that are in the i ^-th first sub-resource and that are used for data transmission, and i =0, 1, ..., .

[0078] represents the number of subcarriers in a physical resource block, PRB, represents the number of PRBs in the subchannel, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, represents the sum of the numbers of REs that are in the i ^-th first sub-resource and that are used to transmit the control channel and the control channel demodulation pilot, and represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the fourth sub-information, the fourth sub-information including second stage control information, PTRS and/or CSI-RS in the first information.

[0079] Optional when , ; or

When , .

[0080] represents the number of symbols that are in the first time unit and that are used to transmit the control channel, and represents the number of PRBs that are in the data channel resource and that are used for control channel transmission.

[0081] Optionally, the number of REs that are in the i ^th first sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (21):

(21)

[0082] represents the number of REs that are in the i ^-th first sub-resource and that are used for data transmission, and i =0, 1, ..., .

[0083] represents the number of subcarriers in a physical resource block, PRB, represents the number of PRBs in the subchannel, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, represents the sum of the numbers of REs that are in the i ^-th first sub-resource and that are used to transmit the control channel and the control channel demodulation pilot, and represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the fifth sub-information, the fifth sub-information including second stage control information, a control channel, a control channel demodulation pilot, PTRS and CSI-RS in the first information.

[0084] Optionally, the first time-frequency resource includes second sub-resources, wherein the second sub-resource includes a first unit of time in the time domain and includes one physical resource block, PRB, in a frequency domain data channel resource, and is a positive integer.

[0085] Determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data includes:

determining, based on the number of REs that are in every second sub-resource and which are used to transmit the first information, the number of REs that are in every second sub-resource and which are used for transmitting data.

[0086] The sum of the quantities of RE that are in second sub-resources and which are used for data transmission is equal to the number of REs that are in the first time-frequency resource and which are used for data transmission.

[0087] Optionally, the number of REs that are in the i ^-th second sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (22):

(22)

[0088] represents the number of REs that are in the i ^-th first sub-resource and that are used for data transmission, i =0, 1, ... , represents the number of subcarriers in the PRB, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot, represents the sum of the numbers of REs that are in the i ^-th second sub-resource and that are used to transmit the control channel and the control channel demodulation pilot, and represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the fourth sub-information, the fourth sub-information including second stage control information, PTRS and/or CSI-RS in the first information.

[0089] Optional when , ; or

When , .

[0090] represents the number of PRBs that are in the data channel resource and that are used for control channel transmission, and represents the number of symbols that are in the first time unit and that are used to transmit the control channel.

[0091] Optionally, the number of REs that are in the i ^-th second sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (23):

(23)

[0092] represents the number of REs that are in the i ^-th first sub-resource and that are used for data transmission, and i =0, 1, ..., .

[0093] represents the number of subcarriers in the PRB, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot, represents the sum of the numbers of REs that are in the i ^-th second sub-resource and that are used to transmit the control channel and the control channel demodulation pilot, and represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the fifth sub-information, the fifth sub-information including second stage control information, a control channel, a control channel demodulation pilot, PTRS and CSI-RS in the first information.

[0094] The number of REs that are in the first time-frequency resource and that are used for data transmission can be precisely determined by all of the optional methods described below.

[0095] According to a second aspect, a communication method is provided. The method can be applied to a network device. The method includes: sending indication information, wherein the indication information is used to indicate values of one or more of the following parameters: , And .

[0096] represents one of the following elements in every first sub-resource or every second sub-resource:

number of REs used for PTRS and/or CSI-RS transmission; the sum of the numbers of REs used to transmit at least one of the following: control channel, control channel demodulation pilot, PTRS or CSI-RS; the sum of the numbers of REs used to transmit at least one of the following: second stage control information, PTRS and CSI-RS; or the sum of the numbers of REs used to transmit at least one of the following: second stage control information, control channel, control channel demodulation pilot, PTRS and CSI-RS.

[0097] represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information.

[0098] represents the transport block correction factor. For example, specifically represents the number of symbols in the first time unit that are adjusted to calculate the transport block size of the data channel.

[0099] The first time-frequency resource includes a first unit of time in the time domain and includes a data channel resource in the frequency domain. The first sub-resource includes a first unit of time in the time domain and includes one sub-channel in the data channel resource in the frequency domain. The second sub-resource includes a first time unit in the time domain and includes one PRB in a data channel resource in the frequency domain.

[00100] According to the method provided in this application, the transmitting side terminal device and the receiving side terminal device can determine, based on the indication information sent by the network device, the number of REs used to transmit direct connection data. In addition, the transport block size for a direct connection can be determined based on the number of REs used to transmit direct connection data.

[00101] According to a third aspect, a hardware communication component is provided. The communication hardware component includes modules or blocks configured to implement a method according to any one of the first aspect or possible implementations of the first aspect, or includes modules or blocks configured to implement a method according to any one of the second aspect or possible implementations of the second aspect.

[00102] According to a fourth aspect, a hardware communication component is provided. The communication hardware component includes a processor. The processor is coupled to memory and may be configured to execute instructions in memory to enable the hardware component to perform a method of any of the first aspect or possible implementations of the first aspect or to execute a method of any of the second aspect or possible implementations of the second aspect. Optionally, the hardware component further includes memory. Optionally, the hardware component further includes interface circuitry, and the processor is coupled to the interface circuitry.

[00103] According to a fifth aspect, a processor is provided. The processor includes an input circuit, an output circuit, and a processing circuit. The processing circuitry is configured to receive a signal using the input circuitry and transmit a signal using the output circuitry to enable the processor to perform a method according to any one of the first aspect or possible implementations of the first aspect or to perform a method according to any one of the second aspect or possible implementations of the second aspect.

[00104] In a particular implementation, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, or the like. An input signal received by an input circuit may be received and input by, for example, but not limited to, a receiver, a signal output by an output circuit may be output by, for example, but not limited to, a transmitter and transmitted by the transmitter, and an input circuit and an output circuit may be the same circuit, and this circuit is used as an input circuit and an output circuit at different times. Specific implementations of the processor and various circuits are not limited in this embodiment of this application.

[00105] According to a sixth aspect, a communication hardware component is provided. The communication hardware component includes a processor and memory. The processor is configured to: read instructions stored in memory, receive a signal using a receiver, and transmit a signal using a transmitter to perform a method according to any one of the first aspect or possible implementations of the first aspect or perform a method according to any one of the second aspect or possible implementations of the second aspect.

[00106] Optionally there are one or more processors and one or more memory devices.

[00107] Optionally, the memory may be integrated with the processor, or the memory and processor may be separate.

[00108] In a particular implementation, the memory may be non-transitory memory, such as read-only memory (ROM). The memory and processor may be integrated on the same chip or may be located on different chips. The type of memory and the manner in which the memory and processor are arranged are not limited in this embodiment of this application.

[00109] The processing hardware component in the sixth aspect may be a chip. The processor can be implemented using hardware or software. When the processor is implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When the processor is implemented in software, the processor may be a general purpose processor and is implemented by reading software code stored in memory. The memory may be integrated with the processor or may be independent of the processor.

[00110] According to a seventh aspect, a computer program product is provided. A computer program product includes a computer program (which may also be referred to as code or instructions). When the computer program is executed, the computer is capable of executing a method according to any one of the first aspect or possible implementations of the first aspect or executing a method according to any one of the second aspect or possible implementations of the second aspect.

[00111] According to an eighth aspect, a computer-readable storage medium is provided. A computer-readable storage medium stores a computer program (which may also be referred to as code or instructions). When a computer program is executed on a computer, the computer is capable of executing a method according to any one of the first aspect or possible implementations of the first aspect or executing a method according to any one of the second aspect or possible implementations of the second aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

[00112] FIG. 1 is a schematic representation of a V2X communication architecture according to this application.

[00113] FIG. 2 is a schematic flowchart of a communication method according to this application.

[00114] FIG. 3 is a schematic representation of the relative positions of a first time-frequency resource, a time-frequency resource used for transmitting first information, and a time-frequency resource used for transmitting data.

[00115] FIG. 4 is a representation of a slot structure according to this application.

[00116] FIG. 5 is a schematic diagram of the structure of a communication hardware component according to this application.

[00117] FIG. 6 is a schematic diagram of the structure of a network device according to this application.

[00118] FIG. 7 is a schematic diagram of the structure of a terminal device according to this application.

DESCRIPTION OF IMPLEMENTATION OPTIONS

[00119] The technical solutions in this application are described below with reference to the accompanying drawings.

[00120] The technical solutions provided in this application can be applied to a device to device (D2D) scenario and, optionally, can be applied to a vehicle to everything scenario. V2X). For example, a V2X scenario may specifically represent any of the following systems: vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle to network service (vehicle to network, V2N) and communication from vehicle to infrastructure (vehicle to infrastructure, V2I).

[00121] For example, D2D may be long term evolution (LTE) D2D or new radio (NR) D2D, or may be D2D in another communications system that may emerge as technology advances. Likewise, V2X may be V2X LTE or V2X NR, or may be V2X in another communication system that may emerge as technology advances.

[00122] The terminal device in embodiments of this application may be a user equipment, access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user hardware component. The terminal device may alternatively be a cellular telephone, cordless telephone, session initiation protocol (SIP) telephone, wireless local loop (WLL), personal digital assistant (PDA), portable device having wireless communication function, computing device, other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in the future 5G network, terminal device in the future advanced public land mobile network network, PLMN) or similar. This is not limited in embodiments of this application.

[00123] The network device in embodiments of this application may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) ) in a 5G mobile communication system, a base station in a future mobile communication system, an access point in a Wi-Fi system or the like; or the network device can be a module or unit that implements part of the functions of the base station, for example, it can be a central unit (CU) or a distributed unit (DU). The specific technology and the specific device form that are used by the network device are not limited in embodiments of this application.

[00124] In embodiments of this application, a terminal device or network device includes a hardware layer, an operating system layer operating on top of the hardware layer, and an application layer operating on top of the operating system layer. The hardware layer includes hardware such as the central processing unit (CPU), memory management unit (MMU), and memory (also called main memory). An operating system may be any one or more computer operating systems that implement service processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as a browser, contact list, word processing software, and instant messaging software. In addition, the specific structure of the execution portion of the method provided in the embodiments of this application is not particularly limited in the embodiments of this application, provided that a program that writes code for the method provided in the embodiments of this application can be run to perform communication according to the method provided in embodiments of this application. For example, the method provided in embodiments of this application may be performed by a terminal device or a network device, or may be performed by a function module that resides in the terminal device or network device and that can call and execute a program.

[00125] In addition, aspects or features of this application may be implemented in the form of a method, hardware component, or product that uses standard programming and/or design technologies. The term "product" as used in this application covers a computer program that can be accessed/implemented from any computer-readable component, media or medium. For example, a computer-readable medium may include, but is not limited to: a magnetic storage component (e.g., a hard disk, floppy disk, or magnetic tape), an optical disk (e.g., a compact disc (CD), or a digital versatile disk (digital versatile disc (DVD)), smart card, and flash memory component (for example, erasable programmable read-only memory (EPROM), card, flash drive, or flash drive). In addition, the various storage media described in this specification may indicate one or more devices and/or other computer-readable media that are configured to store information. The term "machine-readable media" may include, but is not limited to, wireless communication and various other media that can store, include and/or carry instructions and/or data.

[00126] FIG. 1 is a schematic representation of a V2X communication architecture. As shown in FIG. 1, the architecture includes two types of communication interfaces: PC5 interface and Uu interface. The PC5 interface is a direct communication interface between V2X-UEs (eg, V2X-UE 1 and V2X-UE 2 shown in the figure). The direct link between V2X-UE is also defined as a side link or direct connection (sidelink, SL). Uu interface communication is a communication mode in which the V2X-UE transmitter (such as V2X-UE 1) sends V2X data to the base station through the Uu interface, the base station sends this data to the V2X application server for processing, the server V2X applications deliver processed data to the base station, and then the base station sends the data to the V2X-UE receiver (eg, V2X-UE2). In the Uu interface communication mode, the base station that forwards the uplink data of the V2X-UE transmitter to the application server and the base station that forwards the downlink data delivered by the application server to the V2X-UE receiver may be the same the same base station or may be different base stations. This may be specifically determined by the application server. It should be understood that the sending performed by the V2X-UE transmitter to the base station is called uplink (UL) transmission, and the sending performed by the base station to the V2X-UE receiver is called downlink (DL) transmission. .

[00127] Below with reference to FIG. 2 describes the communication method provided in this application. The following describes the steps in method 200.

[00128] S210. Determining, based on the number of REs that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data.

[00129] The first time-frequency resource includes a first unit of time in the time domain and includes a data channel resource in the frequency domain. Alternatively, the first time-frequency resource is formed by the first time unit and the data channel resource. It should be understood that the first time unit is a time domain resource and the data channel resource is a frequency domain resource.

[00130] In a possible example, the data channel resource is the bandwidth occupied by the data channel, and the bandwidth may be specified in the control channel.

[00131] The first time unit may include symbols other than the first symbol and the last symbol in a direct connection communication slot (eg, a direct connection communication slot may be referred to as a direct connection communication slot or a direct connection slot). For example, if one point-to-point communication slot includes 14 orthogonal frequency division multiplexing symbols, the first time unit includes 12 OFDM symbols. It should be understood that the first time unit is used for direct connection communication.

[00132] For example, the first symbol in a direct link communication slot may be used for automatic gain control (AGC), and the last symbol is a break symbol (GAP).

[00133] In V2X, to avoid affecting the decoding effect of the control channel, the first symbol must be set as an AGC symbol, and the data mapped to this first symbol is copied from the symbol immediately adjacent to the AGC symbol, namely, the second valid symbol.

[00134] The data channel resource is used for direct connection communication. A data channel resource may include several sub-channels.

[00135] A data channel resource is a resource in a resource set. A collection of resources may also be referred to as a resource pool. The resource pool may be configured by the network device, or the resource pool may be pre-configured (ie, specified in a protocol). The resource pool may include a plurality of subchannels, each subchannel including a plurality of sequential PRBs, and a data channel resource may include one or more sequential subchannels.

[00136] It should be noted that the resource pool in the following is a resource pool corresponding to a data channel resource. However, this application is not limited to this.

[00137] The first information includes one or more of the following: a control channel, a control channel demodulation pilot, a data channel demodulation pilot, second stage control information, a phase tracking reference signal, PTRS, and a channel state information reference signal ,CSI-RS.

[00138] For example, if a PTRS needs to be transmitted on a first time-frequency resource, the first information includes this PTRS; or if there is no need to transmit the PTRS on the first time-frequency resource, the first information does not include this PTRS. Alternatively, if it is configured that the PTRS can be sent in a direct connection resource pool, the first information includes this PTRS. If no PTRS is configured in the direct connection resource pool, the first information does not include that PTRS. Likewise, if a CSI-RS needs to be transmitted on a first time-frequency resource, the first information includes this CSI-RS; or if there is no need to transmit the CSI-RS on the first time-frequency resource, the first information does not include this CSI-RS. Alternatively, if it is configured that the CSI-RS can be sent in a direct connection resource pool, the first information includes this CSI-RS. If no CSI-RS is configured in the direct connection resource pool, the first information does not include that CSI-RS.

[00139] The control channel is a control channel used for direct connection communication. For example, the control channel may be a physical sidelink control channel (PSCCH).

[00140] The control channel demodulation pilot signal is a pilot signal used to demodulate the control channel, and may be, for example, a demodulation reference signal (DMRS).

[00141] The data channel demodulation pilot is a pilot signal used to demodulate a control channel, and may be, for example, a data channel DMRS. The data channel in this application is a data channel for sidelink communication and may be, for example, a physical sidelink shared channel (PSSCH).

[00142] The second stage control information is control information transmitted via a data channel, and may be, for example, sidelink control information, SCI2, or SCI0-SCI2 in an NR-V2X system.

[00143] In this application, the data is data transmitted over a direct connection.

[00144] For example, FIG. 3 is a schematic representation of the relative positions of said first time-frequency resource, a time-frequency resource used to transmit said first information, and a time-frequency resource used to transmit said data.

[00145] As shown in FIG. 3, the first time-frequency resource is formed from 12 symbols and 20 PRBs. In other words, the first time-frequency resource is formed from 12 symbols and two sub-channels (sub-channels 0 and 1), and one sub-channel includes 10 PRBs. One direct connection communication slot includes 14 symbols, namely symbol 0 to symbol 13. The first time unit includes symbol 1 to symbol 12. Symbol 0 is used for AGC, and symbol 13 is used as GAP. The data channel resource includes 20 PRBs, namely PRB 0 to PRB 19. The time-frequency resource formed by symbols 0 and 1 and PRB 0 to 9 is used to transmit the control channel and the control channel demodulation pilot signal in the first information. The time-frequency resource formed by symbols 0 and 1 and PRB 10-19 is used to transmit second stage control information. The time-frequency resource generated by symbol 7 and PRB 0-19 is used to transmit the data channel demodulation pilot signal. If the resource shown in FIG. 3 is not used for PTRS and CSI-RS transmission, a resource that is not padded in this figure can be used for data transmission. It should be understood that the resource shown in FIG. 3 can also be used for PTRS and/or CSI-RS transmission.

[00146] It should be understood that FIG. 3 is just an example, and the position of each piece of information shown in this figure and the size of the resource occupied should not constitute any limitation for this application.

[00147] It should be noted that step S210 is applicable to both the transmitting side terminal device and the receiving side terminal device. The transmitting side terminal device and the receiving side terminal device are two ends that communicate with each other through a direct connection. For example, when method 200 is applied to the system shown in FIG. 1, the transmitting side terminal device may be V2X-UE 1, and the receiving side terminal device may be V2X-UE 2.

[00148] Optionally, the method may further include the following step.

[00149]S220. Determining the transport block size based on the specific number of REs used to transmit data.

[00150] Step S220 applies to both the transmitting side terminal device and the receiving side terminal device.

[00151] It should be understood that in this application it is not limiting whether S210 and S220 are performed first by the receiving side terminal device, or whether S210 and S220 are performed first by the sending side terminal device, provided that the sending side terminal device can determine the size of the transport block before sending a transport block, and the receiving-side terminal device may determine the size of the transport block before performing channel decoding on that transport block.

[00152] S230. The sending side sends a transport block based on the transport block size. Accordingly, the receiving side receives the transport block based on the size of the transport block. That is, the receiving side terminal apparatus performs channel decoding on the transport block.

[00153] According to the method provided in this application, the number of REs used for transmitting direct connection data can be determined based on the numbers of REs used for transmitting the control channel, control channel demodulation pilot, data channel demodulation pilot, information second stage control, CSI-RS and/or PTRS. In addition, the direct connection TBS can be determined based on the number of REs used to transmit direct connection data.

[00154] A specific implementation of S210 is described below.

[00155] First, for ease of understanding and brief description, this application defines the following:

[00156] (1) The number of subchannels included in a data channel resource is .

[00157] For example, in FIG. 3, .

[00158] may be configured by the network device or determined by the sending side terminal device.

[00159] In this application configured by a network device (eg, a base station shown in FIG. 1), and may be delivered by the network device to a transmitting side terminal device via a downlink control channel; or may be configured by a network device and delivered to the sending side terminal device using higher layer signaling. The higher level signaling may be RRC signaling. This is not limited in this application. For example, higher layer signaling may alternatively be MAC-CE. configured by the sending side terminal device, or may be configured by the sending side terminal device based on the result of the resource selection, and sent to the physical layer using an interlayer primitive to perform the corresponding encoding operation.

[00160] (1) The number of PRBs included in the data channel resource is .

[00161] For example, in FIG. 3, .

[00162] (3) The number of symbols in the first time unit that are available for encoding is .

[00163] represents the number of characters in the first time unit. For example, in FIG. 3, .

[00164] represents the transport block correction factor. For example, in particular represents the number of symbols in said first time unit that are adjusted to calculate the transport block size of said data channel.

[00165] For example, if no PSFCH transmission resource is configured in the resource pool, in other words, if no direct connection transmission slot has a symbol used for PSFCH transmission, . Hence, .

[00166] For example, if a PSFCH transmission resource is configured in a resource pool, for greater certainty, some forward connection transmission slots have symbols used for PSFCH transmission, some forward connection transmission slots do not have a symbol used for PSFCH transmission, and for example slot direct connection transmission is the one shown in FIG. 4, may not equal 0. Specific value may be configured by the system or may be indicated by a transmitting side terminal device to a receiving side terminal device.

[00167] For example, if , . For example, in FIG. The 4 characters in the first time unit that are available for encoding are characters 1-9.

[00168] (4) The first sub-resource includes a first unit of time in the time domain and includes one sub-channel in the data channel resource in the frequency domain.

[00169] In other words, one sub-resource is generated by the first time unit and one sub-channel in the data channel resource.

[00170] It may be understood that the number of first sub-resources included in the first time-frequency resource is .

[00171] (5) The second sub-resource includes a first time unit in the time domain and includes one PRB in a data channel resource in the frequency domain.

[00172] It may be understood that the number of second sub-resources included in the first time-frequency resource is .

[00173] (6) The first sub-information includes a control channel, a control channel demodulation pilot signal, and second stage control information in the first information.

[00174] (7) The second sub-information includes at least one of a data channel demodulation pilot, PTRS, or CSI-RS.

[00175] The first information includes the first sub-information and the second sub-information, and the second sub-information includes information other than the first sub-information in the first information.

[00176] The following specifically describes various techniques S210.

[00177] Method 1

[00178] The technique includes: determining, based on the number of REs that are in each first sub-resource and that are used to transmit second sub-information, the sum of the numbers of REs that are in each first sub-resource and that are used to transmit the data and the first sub-information; and determining, based on the sum of the numbers of REs that are in each first sub-resource and that are used to transmit data and first sub-information, and the number of REs that are in the first time-frequency resource and that are used to transmit the first sub-information, the number of REs that are in the first time-frequency resource and which are used for data transmission.

[00179] For example, the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used to transmit data and first sub-information satisfies Formula (1):

(1)

[00180] represents the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used to transmit data and first sub-information, and i =0, 1, ..., .

[00181] represents the number of subcarriers in a physical resource block, PRB.

[00182] In this application =12. However, this is not limited in this application.

[00183] represents the number of PRBs in the subchannel. For example, in FIG. 3, .

[00184] represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot.

[00185] includes the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used for PTRS and/or CSI-RS transmission. In other words, is the number of REs that are configured for each first sub-resource and that are used for PTRS and/or CSI-RS transmission.

[00186] It should be understood that if PTRS needs to be transmitted, includes the number of REs used to transmit this PTRS; or, if there is no need to transmit PTRS, includes the number of REs not used for PTRS transmission, or in other words, the number of REs used for PTRS transmission is 0. If CSI-RS needs to be transmitted, includes the number of REs used to transmit this CSI-RS; or, if there is no need to transmit CSI-RS, includes the number of REs not used for CSI-RS transmission, or in other words, the number of REs used for CSI-RS transmission is 0.

[00187] In this application may be pre-configured in a resource pool or may be configured by a network device in a resource pool. in the following can also be configured in two ways. The details are not described below.

[00188] For example, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (2):

(2)

[00189] represents the number of REs that are in the first time-frequency resource and that are used for data transmission.

[00190] is the sum of the numbers of REs that are in the first time-frequency resource and that are used to transmit the control channel and the control channel demodulation pilot signal in the first sub-information.

[00191] represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information in the first sub-information.

[00192] It should be understood that if Formula (1) is replaced by Formula (2), Formula (2) changes to the following Formula (2a):

(2a)

[00193] Optionally, satisfies Formula (3):

(3)

[00194] represents the number of symbols that are in the first time unit and that are used to transmit the control channel. represents the number of PRBs that are in the data channel resource and that are used for control channel transmission. FIG. 3 is used as an example. Assuming that the control channel demodulation pilot occupies only some REs in the time-frequency resource generated by symbol 1 and PRB 2, And .

[00195] Possible methods for calculating .

[00196] Calculation method 1

[00197] satisfies Formula (4):

(4)

[00198] represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, represents the modulation order of the data channel, represents the equivalent bit rate scale factor of the second stage control information, represents the number of REs that are in the time-frequency resource formed by the symbol l in the first time unit and data channel resource, and which are used to transmit second stage control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of PRBs.

[00199] It should be understood that the symbol l herein may be understood as the l ^th symbol in the first time unit. For example, when l =0, the symbol l corresponds to symbol 1 in FIG. 4, when l =1, symbol l corresponds to symbol 2 in FIG. 4 and so on.

[00200] For example, may be pre-configured in a resource pool or may be configured by a network device in a resource pool.

[00201] In a possible example satisfies Formula (4a) or (4b):

(4a)

(4b)

[00202] represents the scale factor of the bit rate of the second stage control information, represents the ^qth scale factor in the M scale factors configured in the resource pool to which the data channel resource belongs, and this scale factor is the bit rate scale factor of the second stage control information. may be pre-configured in a resource pool or may be configured by a network device in a resource pool.

[00203] In a possible example determined based on at least one of the following:

the number of subcarriers occupied by the data channel pilot on symbol l in the first time unit;

the number of subcarriers occupied by PTRS on symbol l in the first time unit;

the number of subcarriers occupied by CSI-RS on symbol l in the first time unit; And

the number of subcarriers occupied by the control channel on symbol l in the first time unit.

[00204] For example, when determined based on the numbers of subcarriers occupied by the data channel pilot, PTRS, CSI-RS and control channel on symbol l in the first time unit, satisfies Formula (4c):

(4c)

[00205] is the number of subcarriers in the bandwidth for data link scheduling, is the number of subcarriers occupied by the data channel pilot on symbol l , is the number of subcarriers occupied by PTRS on symbol l , is the number of subcarriers occupied by CSI-RS on symbol l , and is the number of subcarriers occupied by the control channel on said symbol.

[00206] It should be understood that when not associated with one or more of the numbers of subcarriers occupied by the data channel pilot, PTRS, CSI-RS or control channel on symbol l , can be obtained by removing the corresponding parameter from Formula (4c).

[00207] For example, when determined based on the numbers of subcarriers occupied by the data channel pilot, PTRS, and control channel on symbol l , satisfies Formula (4d):

(4d)

[00208] When determined based on the number of subcarriers occupied by the control channel on symbol l , satisfies Formula (4e):

(4e)

[00209] It should be understood that any of Formulas (4a) - (4e) may be substituted for Formula (4) to produce equivalent versions of Formula (4), and these equivalent versions shall fall within the scope of protection of this application.

[00210] Optionally, given that the numbers of subcarriers in the data channel scheduling bandwidth are the same on all symbols, can be represented as . In addition, on the l symbol, in which the control channel is not mapped, . At the l symbol to which the control channel is mapped, the number of included control channel subcarriers is similar. More specifically, on the symbol l to which the control channel is mapped, . is the number that refers to the subcarriers available for the data channel in the frequency domain, and which is configured by the higher layer RRC. In this case, Formula (3) is transformed into Formula (5).

(5)

[00211] is a quantity that relates to the symbols available for the time domain control channel and that is configured by the higher layer. For the meaning of other parameters, refer to the above sections of the corresponding parameter descriptions.

[00212] Calculation method 2

[00213] Optionally, satisfies Formula (6):

(6)

(6a)

[00214] represents the allowable size of the second stage control information payload, represents the CRC bit length of the second stage control information, represents the bit rate of the data channel, represents the modulation order of the data channel, represents the number of characters in the first time unit, represents the number of REs that are in the time-frequency resource formed by the symbol l in the first time unit and data channel resource, and which are used to transmit second stage control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of PRBs, represents the ^qth scale factor in the M scale factors configured in the resource pool to which the data channel resource belongs, and this scale factor is the bit rate scale factor of the second stage control information.

[00215] It should be understood that the symbol l herein may be understood as the l ^th symbol in the first time unit. For example, when l =0, the symbol l corresponds to symbol 1 in FIG. 4, when l =1, symbol l corresponds to symbol 2 in FIG. 4 and so on.

[00216] It should further be understood that , , And , described here and below, can be pre-configured in a resource pool or can be configured by a network device in a resource pool. can also be understood as the ratio of the maximum number of resources that the second stage control information is allowed to use to the number of data channel resources.

[00217] It should also be understood that the calculation formula given in calculation method 1 is also applicable to Formula (6). Calculation formulas , listed in calculation method 1, may be replaced by Formula (6a) to obtain equivalent versions of Formula (6a), and these equivalent versions shall fall within the scope of protection of this application. Likewise, Clause (6a) and the equivalent version of Formula (6a) are replaced by Formula (6) to produce equivalent versions of Formula (6), and these equivalent versions must also fall within the scope of protection of the application.

[00218] Calculation method 3

[00219] Given that the second stage control information avoids a reference signal such as DMRS/PRRS/CSI-RS during display, and ensures that no other information other than the second stage control information and the reference signal is mapped to the RB to which the second stage control information is mapped, the mapping of the reference signal such as DMRS/PRRS/CSI-RS actually affects the number of REs, in fact occupied by second stage control information. Therefore, when the display position of a reference signal such as DMRS/PRRS/CSI-RS is changed in the initial transmission process and the retransmission process of a data packet to avoid affecting the calculation result of the second stage control information, the upper limit of the number of REs and expressions in the mentioned formulas can be modified.

[00220] Optionally, satisfies Formula (7):

(7)

[00221] represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, may represent the order of modulation of a data channel or a control channel, represents an equivalent bit rate scale factor of the second stage control information and has a specific meaning that is the same as described above, or represents a scale factor that relates to a resource for the second stage control information and which is indicated by the first control information, represents an upper limit on the number of REs occupied by second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of PRBs.

[00222] Calculation method 4

[00223] Based on Formula (7), the limitation can be excluded, that is satisfies Formula (8):

(8)

[00224] Calculation method 5

[00225] Moreover, given that the data channel can be mapped to two spatial levels, and the scale factor The bit rate of the second stage control information is specified as the scaling ratio of the control channel and the data channel at each level, the number of spatial levels into which the data channel is mapped must be taken into account when calculating the RE occupied by the second stage control channel.

[00226] satisfies Formula (9) or Formula (10):

(9)

(10)

[00227] represents the number of spatial layers of the data link.

[00228] The above calculation formula can also be applied to determine the number of modulation symbols respectively output based on the encoding rate of the second stage control information.

[00229] In a possible example, to avoid influence of the reference signal during the TBS determination process, the value can be set to 0, 3, 6 or 9; or is a preconfigured integer from 0 to 11, that is can be any value in the set {0,1,2,3,4,5,6,7,8,9,10,11}.

[00230] In a possible example, given the reception power of the terminal device, represents a preconfigured fixed value of P. P is a positive integer, with P equaling, for example, 1024, 1536 or 2048; or P represents a preconfigured maximum encoding or decoding performance of control information of the terminal device. In a possible example, without considering the resources occupied by the control channel, can be specified as part of the sum of the numbers of REs in the bandwidth for data link scheduling, i.e. satisfies Formula (11):

(eleven)

[00231] represents the number of symbols in the first time unit excluding PSFCH, represents the number of subcarriers in the bandwidth for data link scheduling and represents a number that refers to subcarriers in the control channel bandwidth on symbol l and that is configured by the higher layer RRC. represents the scaling factor of the resource used to transmit second stage control information, where 0< ≤1.

[00232] For example, satisfies Formula (11a) or (11b):

(11a)

(11b)

[00233] represents a quantity that relates to symbols included in a direct connection communication slot and that is configured by a higher layer RRC. represents the number of symbols occupied by the PSFCH and is related to the configuration period of the PSFCH. For example, when the PSFCH configuration period is 0, ; or when the PSFCH configuration period is 1, 2 or 4, . Alternatively, based on the specific value of the PSFCH configuration period, , i.e. is any value in the set .

[00234] It should be understood that Formula (11a) or Formula (11b) may be replaced by Formula (11) to produce an equivalent version of Formula (11), and this equivalent version must also fall within the scope of protection of this application.

[00235] In addition, is the same on all symbols, i.e. , , , and i is not equal to j . In this case can be represented in the form . Accordingly, Formula (11) is transformed into:

[00236] In a possible example, given the resources occupied by the control channel, is given as part of the sum of the data channel RE numbers in the bandwidth for data channel scheduling, i.e. satisfies Formula (12):

(12)

[00237] To obtain the semantic meaning , refer to the description of Formula (11). For possible meaning , refer to Formulas (11a) and (11b). represents the number of subcarriers in the bandwidth for data link scheduling. represents a number that refers to subcarriers in the control channel bandwidth on symbol l and that is configured by the higher layer RRC. represents the scaling factor of the resource used to transmit second stage control information, where 0< ≤1.

[00238] In a possible example, given that the numbers of subcarriers included in the data channel bandwidth are the same on all l symbols, can be represented as . is the number of subcarriers in the bandwidth for data link scheduling. In addition, on the l symbol, in which the control channel is not mapped, . At the l symbol to which the control channel is mapped, the number of included control channel subcarriers is similar. More specific, . is the number that refers to the subcarriers available for the data channel in the frequency domain, and which is configured by the higher layer RRC. In other words, Formula (12) is transformed into Formula (13).

(13)

[00239] In the above example, the bandwidth for data channel scheduling is specified in the control channel.

[00240] It should be understood that any of Formulas (11), (12) and (13) or their respective variations may be substituted by Formulas (7)-(10) to obtain corresponding equivalent variations, and these equivalent variations shall be subject to scope of protection under this application.

[00241] It should also be understood that, based on the parameter calculation techniques listed in Formulas (3)-(10) or their respective variations, further changes or equivalent substitutions may be made to Formula (2) or Formula (2a). For brevity, examples are not listed here one by one. However, it should be understood that in some cases may be calculated based on the converted formula or an equivalent formula obtained by substitution, and all of these variations must fall within the scope of protection of the application.

[00242] Method 2

[00243] The technique includes: determining, based on the number of REs that are in every second sub-resource and that are used to transmit the second sub-information, the sum of the numbers of REs that are in every second sub-resource and that are used to transmit the data and the first sub-information; and determining, based on the sum of the numbers of REs that are in every second sub-resource and that are used to transmit data and the first sub-information, and the number of REs that are in the first time-frequency resource and that are used to transmit the first sub-information, the number of REs that are in the first time-frequency resource and which are used for data transmission.

[00244] The difference from Method 1 is that in Method 1, the sum of the quantities of RE that are in each first sub-resource and which are used to transmit data and first sub-information is first determined, and in Method 2, the sum of the quantities of RE that are in every second sub-resource and which are used to transmit data and first sub-information.

[00245] For example, the sum of the quantities of RE that are in the i ^-th second sub-resource in the first time-frequency resource and that are used to transmit data and first sub-information satisfies Formula (14):

(14)

[00246] represents the sum of the quantities of RE that are in the i ^-th second sub-resource and that are used to transmit data and first sub-information, and i =0, 1, ..., .

[00247] represents the number of subcarriers in the PRB and represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot.

[00248] includes the sum of the quantities of RE that are in the i ^-th second sub-resource and that are used for PTRS and/or CSI-RS transmission. In other words, is the number of REs that are configured for every second sub-resource and that are used for PTRS and/or CSI-RS transmission.

[00249] It should be understood that if PTRS needs to be transmitted, includes the number of REs used to transmit this PTRS; or, if there is no need to transmit PTRS, includes the number of REs not used for PTRS transmission, in other words, the number of REs used for PTRS transmission is 0. If CSI-RS needs to be transmitted, includes the number of REs used to transmit this CSI-RS; or, if there is no need to transmit CSI-RS, includes the number of REs not used for CSI-RS transmission, or in other words, the number of REs used for CSI-RS transmission is 0.

[00250] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (15):

(15)

[00251] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, represents the sum of the numbers of REs that are in the first time-frequency resource and that are used to transmit the control channel and the control channel demodulation pilot signal in the first sub-information, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information in the first sub-information.

[00252] For possible calculation methods And , refer to the related content in Method 1.

[00253] It should be understood that Formula (14) can be replaced by Formula (15) to obtain an equivalent version of Formula (15), and this equivalent version must also fall within the scope of protection of this application. It should also be understood that, based on the methods for calculating the parameters listed in Formulas (3)-(10) or their corresponding variants, additional changes or equivalent substitutions may be made to Formula (15) or its variant. For brevity, examples are not listed here one by one. However, it should be understood that in some cases may be calculated based on the converted formula or an equivalent formula obtained by substitution, and all of these variations must fall within the scope of protection of the application.

[00254] Method 3

[00255] The technique includes: determining, based on the number of REs that are in each first sub-resource and that are used to transmit third sub-information, the sum of the numbers of REs that are in each first sub-resource and that are used to transmit second stage data and control information ; and determining, based on the sum of the numbers of REs that are in each first sub-resource and that are used to transmit data and control information of the second stage, and the number of REs that are in the first time-frequency resource and that are used to transmit the control information of the second stage, the number of REs , which are in the first time-frequency resource and which are used for data transmission. The third sub-information includes at least one of a data channel demodulation pilot, a control channel, a control channel demodulation pilot, PTRS, or CSI-RS.

[00256] For example, the third sub-information is information different from the second stage control information in the first information.

[00257] The difference from Method 1 is that in Method 1, the sum of the quantities of RE that are in each first sub-resource and which are used to transmit data and first sub-information is first determined, and in Method 3, the sum of the quantities of RE that are in each first sub-resource and which are used to transmit data and control information of the second stage.

[00258] Optionally, the sum of the quantities of REs that are in the i ^-th first sub-resource in the first time-frequency resource and that are used to transmit data and control information of the second stage satisfies Formula (16):

(16)

[00259] represents the sum of the quantities of RE that are in the i ^-th first sub-resource and that are used to transmit data and control information of the second stage, and i = 0, 1, ..., .

[00260] represents the number of subcarriers in the PRB, represents the number of PRBs in the subchannel, and represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot.

[00261] includes the sum of the numbers of REs that are in the i ^-th first sub-resource and that are used to transmit at least one of the following: a control channel, a control channel demodulation pilot, PTRS, or CSI-RS. It should be understood that includes the number of REs for any of the above elements to be transmitted. If it is necessary to transmit CSI-RS, includes the number of REs used for CSI-RS transmission.

[00262] Alternatively, is the number of REs that are used to transmit information other than the data channel demodulation pilot in the third sub-information.

[00263] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (17):

(17)

[00264] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information.

[00265] For possible calculation methods , refer to the related content in Method 1.

[00266] It should be understood that Formula (16) can be replaced by Formula (17) to obtain an equivalent version of Formula (17), and this equivalent version must also fall within the scope of protection of this application. It should also be understood that, based on the methods for calculating the parameters listed in Formulas (4)-(10) or their corresponding variants, additional changes or equivalent substitutions may be made to Formula (17) or its variant. For brevity, examples are not listed here one by one. However, it should be understood that in some cases may be calculated based on the converted formula or an equivalent formula obtained by substitution, and all of these variations must fall within the scope of protection of the application.

[00267] Method 4

[00268] This technique includes: determining, based on the number of REs that are in every second sub-resource and which are used to transmit third sub-information, the sum of the numbers of REs that are in every second sub-resource and which are used to transmit data and control information of the second stage ; and determining, based on the sum of the numbers of REs that are in every second sub-resource and that are used to transmit data and control information of the second stage, and the number of REs that are in the first time-frequency resource and that are used to transmit the control information of the second stage, the number of REs , which are in the first time-frequency resource and which are used for data transmission. The third sub-information includes at least one of a data channel demodulation pilot, a control channel, a control channel demodulation pilot, PTRS, or CSI-RS.

[00269] For example, the third sub-information is information different from the second stage control information in the first information.

[00270] The difference from Method 3 is that in Method 3, the sum of the quantities of RE that are in each first sub-resource and which are used to transmit data and control information of the second stage is first determined, and in Method 4, the sum of the quantities of RE that are located in every second subresource and which are used to transmit data and control information of the second stage.

[00271] Optionally, the sum of the quantities of REs that are in the i ^-th second sub-resource in the first time-frequency resource and that are used to transmit data and control information of the second stage satisfies Formula (18):

(18)

[00272] represents the sum of the quantities of RE that are in the i ^-th second sub-resource and that are used to transmit data and control information of the second stage, and i = 0, 1, ..., .

[00273] represents the number of subcarriers in the PRB and represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot.

[00274] includes the sum of the numbers of REs that are in the i ^-th second sub-resource and that are used to transmit at least one of the following: a control channel, a control channel demodulation pilot, PTRS, or CSI-RS. It should be understood that includes the number of REs for any of the above elements to be transmitted. If it is necessary to transmit CSI-RS, includes the number of REs used for CSI-RS transmission.

[00275] Alternatively, is the number of REs that are used to transmit information other than the data channel demodulation pilot in the third sub-information.

[00276] Optionally, the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies Formula (19):

(19)

[00277] represents the number of REs that are in the first time-frequency resource and that are used for data transmission, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information.

[00278] For possible calculation methods , refer to the related content in Method 1.

[00279] It should be understood that Formula (18) can be replaced by Formula (19) to obtain an equivalent version of Formula (19), and this equivalent version must also fall within the scope of protection of this application. It should also be understood that, based on the methods for calculating the parameters listed in Formulas (4)-(10) or their corresponding variants, additional changes or equivalent substitutions may be made to Formula (15) or its variant. For brevity, examples are not listed here one by one. However, it should be understood that in some cases may be calculated based on the converted formula or an equivalent formula obtained by substitution, and all of these variations must fall within the scope of protection of the application.

[00280] Method 5

[00281] This technique includes: determining, based on the number of REs that are in each first sub-resource and that are used to transmit first information, the number of REs that are in each first sub-resource and that are used for transmitting data.

[00282] It may be understood that the sum of the amounts of RE that are in the first sub-resources and which are used for data transmission is equal to the number of REs that are in the first time-frequency resource and which are used for data transmission.

[00283] Example 1

[00284] The number of REs that are in the i ^-th first sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (20):

(20)

[00285] represents the number of REs that are in the i ^-th first sub-resource and that are used for data transmission, and i =0, 1, ..., .

[00286] represents the number of subcarriers in the PRB, represents the number of PRBs in the subchannel, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, and represents the sum of the numbers of REs that are in the i ^-th first sub-resource and that are used to transmit the control channel and the control channel demodulation pilot.

[00287] represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the fourth sub-information, and the fourth sub-information includes second stage control information, PTRS and/or CSI-RS in the first information.

[00288] It should be understood that if there is no need to transmit PTRS, represents the number of REs that are in the i ^-th first sub-resource and that are used for CSI-RS transmission. For example, . If there is no need to transmit CSI-RS, represents the number of REs that are in the i ^-th first sub-resource and that are used for PTRS transmission. For example, .

[00289] Optional when , ; or

When , .

[00290] represents the number of symbols that are in the first time unit and that are used to transmit the control channel, and represents the number of PRBs that are in the data channel resource and that are used for control channel transmission.

[00291] With reference to FIG. 3, the sum of the numbers of REs that are in subchannel 0 and that are used to transmit the control channel and the control channel demodulation pilot signal is , and the sum of the numbers of REs that are in subchannel 1 and that are used to transmit the control channel and the control channel demodulation pilot is .

[00292] Example 2

[00293] The number of REs that are in the i ^-th first sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (21):

(21)

[00294] represents the number of REs that are in the i ^-th first sub-resource and that are used for data transmission, and i =0, 1, ..., .

[00295] represents the number of subcarriers in the PRB, represents the number of PRBs in the subchannel, represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the data channel demodulation pilot, and represents the sum of the numbers of REs that are in the i ^-th first sub-resource and that are used to transmit the control channel and the control channel demodulation pilot.

[00296] represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the fifth sub-information, and the fifth sub-information includes second stage control information, a control channel, a control channel demodulation pilot, PTRS and CSI-RS in the first information.

[00297] Optionally, the numbers of REs that are used to transmit the fifth sub-information and that are in all of the first sub-resources are the same.

[00298] Method 6

[00299] The technique includes: determining, based on the number of REs that are in every second sub-resource and which are used to transmit the first information, the number of REs that are in every second sub-resource and that are used for transmitting data.

[00300] It may be understood that the sum of the amounts of RE that are in second sub-resources and which are used for data transmission is equal to the number of REs that are in the first time-frequency resource and which are used for data transmission. is the number of second sub-resources included in the first time-frequency resource.

[00301] Example 1

[00302] The number of REs that are in the i ^-th second sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (22):

(22)

[00303] represents the number of REs that are in the i ^-th second sub-resource and that are used for data transmission, i =0, 1, ... , . represents the number of subcarriers in the PRB, represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot, and represents the sum of the numbers of REs that are in the i ^-th second sub-resource and that are used to transmit the control channel and the control channel demodulation pilot. represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the fourth sub-information, the fourth sub-information including second stage control information, PTRS and CSI-RS in the first information.

[00304] Optional when , ; or

When , .

[00305] represents the number of PRBs that are in the data channel resource and that are used for control channel transmission, and represents the number of symbols that are in the first time unit and that are used to transmit the control channel.

[00306] Example 2

[00307] The number of REs that are in the i ^-th second sub-resource in the first time-frequency resource and that are used for data transmission satisfies Formula (23):

(23)

[00308] represents the number of REs that are in the i ^-th second sub-resource and that are used for data transmission, and i =0, 1, ..., .

[00309] represents the number of subcarriers in the PRB, represents the number of REs that are in the i ^-th second sub-resource and that are used to transmit the data channel demodulation pilot, and represents the sum of the numbers of REs that are in the i ^-th second sub-resource and that are used to transmit the control channel and the control channel demodulation pilot.

[00310] represents the number of REs that are in the i ^-th first sub-resource and that are used to transmit the fifth sub-information, and the fifth sub-information includes second stage control information, a control channel, a control channel demodulation pilot, PTRS and CSI-RS in the first information.

[00311] It can be understood that for Technique 5 and Technique 6, .

[00312] After the number of REs that are in the first time-frequency resource and that are used for data transmission, viz. , determined in step S210, may first be determined in step S220, where represents the bit rate of the data channel, represents the modulation order of the data channel, represents the number of TB transport layers, and then the TBS can be determined based on the current technology. Please refer to current technology for more details. The details are not described here.

[00313] The method provided in embodiments of this application is described in detail above with reference to FIG. 2 - FIG. 4. The hardware components provided in the embodiments of this application are described in detail below with reference to FIG. 5 and FIG. 6.

[00314] FIG. 5 is a schematic block diagram of a communication hardware component according to an embodiment of the present application. As shown in FIG. 5, the communication hardware component 1000 may include a processing unit 1200. Optionally, the communication hardware component may further include a transceiver unit 1100.

[00315] Transceiver unit 1100 may be configured to send information to or receive information from another hardware component, such as sending or receiving a transport block. Processing unit 1200 may be configured to perform internal processing of the hardware component, determining the number of REs that are in the first time-frequency resource and that are used for data transmission.

[00316] In an implementation, the communication hardware component 1000 may correspond to an implementation portion of the above method, for example, may be a transmitting side terminal device or may be a receiving side terminal device. The communication hardware component 1000 may be a terminal device or a chip configured in the terminal device, and may include blocks configured to perform operations performed by the terminal device. In addition, the blocks in the communication hardware component 1000 are separately executed to implement operations performed by a terminal device in a corresponding manner.

[00317] In an embodiment, processing unit 1200 is configured to determine, based on the number of REs that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used to transmit data. The first time-frequency resource includes a first unit of time in the time domain and includes a data channel resource in the frequency domain. The first information includes at least one of the following: a control channel, a control channel demodulation pilot, a data channel demodulation pilot, second stage control information, a phase tracking reference signal, PTRS, and a channel state information reference signal, CSI -RS.

[00318] Optionally, the processing unit may be further configured to determine a transport block size based on the number of REs used to transmit data.

[00319] Optionally, transceiver unit 1100 may be configured to receive or send a transport block.

[00320] As to how exactly the processing unit 1200 determines, based on the number of resource elements, REs that are in the first time-frequency resource and which are used to transmit the first information, the number of REs that are in the first time-frequency resource and which are used to transmit data, refer to the description portions of the method embodiment disclosed above.

[00321] In another implementation, the communication hardware component 1000 may correspond to a network device in the method embodiment disclosed above. The communication hardware component 1000 may be a network device or a chip configured in the network device, and may include blocks configured to perform operations performed by the network device. In addition, the blocks in the communication hardware component 1000 are separately executed to implement operations performed by the network device in a corresponding manner.

[00322] In an embodiment, the transceiver unit 1200 is configured to send indication information, wherein the indication information is used to indicate the value of one or more of the following parameters: , And .

[00323] represents one of the following elements in every first sub-resource or every second sub-resource:

number of REs used for PTRS and/or CSI-RS transmission; the sum of the numbers of REs used to transmit at least one of the following: control channel, control channel demodulation pilot, PTRS or CSI-RS; the sum of the numbers of REs used to transmit at least one of the following: second stage control information, PTRS and CSI-RS; or the sum of the numbers of REs used to transmit at least one of the following: second stage control information, control channel, control channel demodulation pilot, PTRS and CSI-RS.

[00324] represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information.

[00325] represents the transport block correction factor. For example, specifically represents the number of symbols in the first time unit that are adjusted to calculate the transport block size of the data channel.

[00326] The first time-frequency resource includes a first unit of time in the time domain and includes a data channel resource in the frequency domain. The first sub-resource includes a first unit of time in the time domain and includes one sub-channel in the data channel resource in the frequency domain. The second sub-resource includes a first time unit in the time domain and includes one PRB in a data channel resource in the frequency domain.

[00327] Optionally, processing unit 1100 may first determine indication information.

[00328] It should be understood that the specific process in which each block performs the above-mentioned respective steps of the corresponding network element is described in detail in the method embodiment disclosed above. For the sake of brevity, the details are not described further here.

[00329] It should also be understood that when the communication hardware component 1000 is a network device, the transceiver unit 1100 in the communication hardware component 1000 may correspond to the RRU 3100 in the network device 2000 shown in FIG. 6, and the processing unit 1200 in the communication hardware component 1000 may correspond to the BBU 3200 in the network device 2000 shown in FIG. 6. When the communication device 1000 is a chip configured in a network device, the transceiver unit 1100 in the communication hardware component 1000 may be an input/output interface.

[00330] It should also be understood that when the communication hardware component 1000 is a terminal device, the transceiver unit 1100 in the communication hardware component 1000 may correspond to the transceiver 3002 in the terminal device 3000 shown in FIG. 7, and the processing unit 1200 in the communication hardware component 1000 may correspond to the processor 3001 in the terminal device 3000 shown in FIG. 7.

[00331] FIG. 6 is a schematic diagram of the structure of a network device according to an embodiment of the present application, for example, may be a schematic diagram of the structure of a base station. Base station 2000 may be used in the system shown in FIG. 1, to perform the functions of a network device in the above-disclosed method embodiment. As shown in the figure, base station 2000 may include one or more radio frequency units, such as one or more remote radio units (RRUs) 2100 and one or more baseband units (BBUs) (which may also be referred to as distributed units). (DU)) 2200. RRU 2100 may be referred to as a transceiver unit or communications unit and corresponds to transceiver unit 1100 in FIG. 5. Optionally, transceiver unit 2100 may also be referred to as a transceiver machine, transceiver circuit, transceiver, or the like, and may include at least one antenna 2101 and an RF unit 2102. Optionally, transceiver unit 2100 may include a receive unit and a send unit . The receiving unit may correspond to a receiver (or referred to as a receiving machine or receiver circuit) and the sending unit may correspond to a transmitter (or referred to as a transmitting machine or transmitter circuit). The RRU 2100 is primarily configured to send and receive an RF signal and perform conversion between the RF signal and a baseband signal. The BBU 2200 is mainly configured to: perform baseband processing, control a base station, and the like. The RRU 2100 and BBU 2200 can be physically located together; or may be physically located separately, that is, in a distributed base station.

[00332] The BBU 2200 is the control center of the base station or may be called a processing unit. BBU 2200 may correspond to processing unit 1200 in FIG. 5 and is primarily configured to implement a baseband processing function such as channel encoding/decoding, multiplexing, modulation or spreading. For example, the BBU (processing unit) may be configured to control the base station to perform an operating procedure of the network device in the above-disclosed method embodiment.

[00333] In an example, the BBU 2200 may include one or more cards. Multiple cards may jointly support a radio access network (eg, an LTE network) having a single access standard, or may separately support radio access networks (eg, an LTE network, a 5G network, or another network) having different access standards. The BBU 2200 further includes a memory 2201 and a processor 2202. The memory 2201 is configured to store necessary instructions and data. The processor 2202 is configured to control the base station to perform a desired action, for example, is configured to control the base station to perform an operating procedure related to the network device in the above-disclosed method embodiment. Memory 2201 and processor 2202 may serve one or more cards. In other words, memory and processor can be deployed on each board. Alternatively, multiple boards may share the same memory and processor. In addition, the necessary circuitry can be additionally placed on each board.

[00334] It should be understood that the base station 2000 shown in FIG. 6 may implement processes related to a network device in the method embodiment disclosed above. The operations or functions of the modules in the base station 2000 are respectively designed to implement the corresponding procedures in the above-disclosed method embodiment. For details, refer to the description portions in the method embodiment disclosed above. To avoid repetition, detailed description has been appropriately omitted here.

[00335] The BBU 2200 may be configured to perform an action implemented within a network device in the above-disclosed method embodiment, and the RRU 2100 may be configured to perform a send action from the network device to a terminal device and a receive action from the terminal device in the above-disclosed method. embodiment of the method. For details, refer to the description portions in the method embodiment disclosed above. Again, no details are given here.

[00336] FIG. 7 is a schematic diagram of the structure of a terminal device 3000 according to an embodiment of the present application. As shown in the figure, terminal device 3000 includes a processor 3001 and a transceiver 3002. Optionally, terminal device 3000 may further include a memory 3003. The processor 3001, transceiver 3002, and memory 3003 communicate with each other via an internal communication channel to transmit a control signal. and/or data signal. The memory 3003 is configured to store a computer program. The processor 3001 is configured to call a computer program from the memory 3003 and execute the computer program to control the transceiver 3002 to receive or send a signal.

[00337] The processor 3001 and the memory 3003 may be combined into a hardware processing component 3004, and the processor 3001 is configured to execute program code stored in the memory 3003 to implement the above functions. It should be understood that the processing hardware component 3004 shown in the figure is only an example. In a particular implementation, memory 3003 may be integrated into processor 3001 or may be independent of processor 3001. This is not limited herein.

[00338] The terminal device 3000 may further include an antenna 3010 configured to send, using a radio signal, uplink data or uplink control signaling output by the transceiver 3002.

[00339] It should be understood that the terminal device 3000 shown in FIG. 7 may implement terminal device processes in the method embodiment. The operations or functions of the modules in the terminal device 3000 are respectively designed to implement corresponding procedures in the above-disclosed method embodiment. For details, refer to the description portions in the method embodiment disclosed above. To avoid repetition, detailed description has been appropriately omitted here.

[00340] Optionally, terminal device 3000 may further include a power supply 3005 configured to supply power to various components or circuits in the terminal device.

[00341] In addition, to enhance terminal functionality, the terminal device 3000 may further include one or more of an input unit 3006, a display unit 3007, an audio circuit 3008, a camera 3009, a sensor 3008, and the like, and the audio circuit may further include a speaker 30081 , microphone 30082 and the like.

[00342] It should be understood that the processing hardware component may be a chip. For example, the processing hardware component may be a field programmable gate array (FPGA), a general purpose processor, a digital signal processor (DSP), or an application specific integrated circuit (ASIC). , field programmable gate array (FPGA), other programmable logic device, discrete gate, transistor logic device, or discrete hardware component, may be a system on chip (SoC), may be a central processing unit ( central processing unit (CPU), may be a network processor (NP), may be a digital signal processor (DSP), may be a microcontroller unit (MCU), or may be programmable controller (programmable logic device, PLD) or other integrated circuit. The processor may implement or execute the methods, steps, and logic flowcharts that are disclosed in embodiments of this application. The general purpose processor may be a microprocessor, or the processor may be any conventional processor or the like. The steps in the methods disclosed with reference to embodiments of this application may be directly performed and completed by a hardware decoding processor, or may be performed and completed using a combination of hardware in the decoding processor and a software module. The software module may be located on a storage medium known in the art, such as random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, or a register. The storage medium is located in the memory, and the processor reads the information in the memory and performs the steps of the above method in combination with the processor hardware.

[00343] Memory 3003 may be volatile memory or non-volatile memory, or may include both volatile memory and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable PROM (EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), or flash memory. memory. Volatile memory can be random access memory (RAM), which is used as an external buffer. By way of example, and not limitation, many forms of RAM may be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic random access memory (SDRAM), synchronous dynamic random access memory (SDRAM). double data rate SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous line dynamic random access memory (synchronous line DRAM, SLDRAM) and direct rambus RAM (direct rambus RAM, DR RAM).

[00344] It should be noted that the memory in the system and method described in this description includes, but is not limited to, the mentioned memory devices and any other suitable type of memory.

[00345] This application further provides a computer program product. The computer program product includes computer program code. When the computer program code is executed on a computer, the computer is enabled to perform a method performed by a terminal device or a network device in any of the method embodiments disclosed above.

[00346] This application further provides computer-readable media. Program code is stored on computer-readable media. When the program code is executed on a computer, the computer is enabled to perform a method performed by a network device or a terminal device in the method embodiment disclosed above.

[00347] This application further provides a system including a terminal device and a network device.

[00348] An embodiment of this application further provides a hardware processing component including a processor and an interface. The processor is configured to execute a method performed by a terminal device or a network device in any of the method embodiments disclosed above.

[00349] All or part of the embodiments disclosed above may be implemented using software, hardware, firmware, or any combination thereof. When software is used to implement embodiments, all or some of the embodiments may be implemented in the form of a computer program product. A computer program product includes one or more computer instructions. When computer instructions are downloaded and executed on a computer, procedures or functions according to embodiments of this application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable hardware component. Computer instructions may be stored on a computer-readable storage medium or may be transferred from a computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, or digital subscriber line). , DSL)) or wirelessly (e.g., infrared, radio, or microwave). A computer-readable storage medium can be any usable medium accessible to a computer, or a data storage device, such as a server or data center, combining one or more usable media. Suitable media may be a magnetic medium (for example, a floppy disk, hard disk, or magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), a semiconductor medium (for example, a solid-state drive , SSD)) or the like.

[00350] Terms such as "component", "module" and "system" as used in this description are used to indicate a computer-related object, hardware, firmware, combination of hardware and software, software or executable software . For example, a component can be, but is not limited to, a process that runs on a processor, a processor, an object, an executable file, a thread of execution, a program, or a computer. As illustrated in the figures, the components can be both a computing device and an application that runs on the computing device. One or more components may reside in a process or thread of execution, and a component may be located on a single computer or distributed across two or more computers. In addition, these components may be executed on various computer-readable media that store various data structures. For example, components may communicate using a local or remote process based on a signal having one or more data packets (e.g., data from two components communicating with another component on a local system, a distributed system, or over a network such as the Internet communicating with another system using a signal).

[00351] It is to be understood that the term "embodiment" as used throughout this specification means that specific features, structures, or characteristics related to that embodiment are included in at least one embodiment of this application. Therefore, the embodiments throughout this specification do not necessarily refer to the same embodiment. Moreover, these particular features, structures, or characteristics may be combined into one or more embodiments in any suitable manner.

[00352] It should be understood that in embodiments of this application, the numbers "first", "second", and the like are used simply to distinguish different objects, for example, to distinguish between different network devices, and are not intended to limit the scope of embodiments of this application. The embodiments of this application are not limited to this.

[00353] It should further be understood that in this application the words "when" and "if" mean that the network element performs the corresponding processing in an objective situation, and they are not intended to be a time limit, and the network element is not necessarily required to perform the determining action in implementation time, and they do not imply any other restrictions.

[00354] It should also be understood that in this application, “at least one” means one or more, and “many” means two or more.

[00355] It should also be understood that in embodiments of this application, "B corresponding to A" indicates that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined based only on A. B may alternatively be determined based on A and/or other information.

[00356] It should further be understood that the term “and/or” in this description describes only the associative relationship between related objects and represents that three relationships may exist. For example, A and/or B can mean the following three cases: only A exists, both A and B exist, and only B exists. Additionally, the "/" symbol in this description usually indicates an "or" relationship between related objects .

[00357] Unless otherwise specified, an expression used in this application similar to the expression that "an element includes one or more of the following: A, B and C" generally means that the element can be any of the following: A ; B; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C; A, B and B; A, C and C; B and B; B, B and B; B, B and C; C and C; C, C and C; and another combination of A, B and C. In the above parts of the description, three elements A, B and C are used as an example to describe the optional case for such an element. When the expression is "the element includes at least one of the following: A, B, ... and X", in other words, more elements are included in the expression, the case to which the element is applicable can also be obtained according to the above rule.

[00358] It may be understood that in embodiments of this application, a terminal device and/or network device may perform some or all of the steps in embodiments of this application. These steps or operations are just examples. In embodiments of this application, other operations or variations of various operations may be additionally performed. In addition, the steps may be performed in a different sequence than those presented in the embodiments of this application, and not all operations in the embodiments of this application must be performed.

[00359] One skilled in the art will know that, in combination with the examples described in the embodiments disclosed herein, the blocks and steps of the algorithm may be implemented using electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific applications and design constraints of the technical solutions. One skilled in the art may employ various methods to implement the described functionality for each specific application, but such implementation should not be considered beyond the scope of this application.

[00360] Those skilled in the art will appreciate that for the purpose of convenient and concise description, the detailed workflow of the above-mentioned systems, hardware components and units is referred to the corresponding process in the method embodiment disclosed above. Again, no details are given here.

[00361] In several embodiments presented herein, it should be understood that the disclosed system, hardware component, and method may be implemented in other ways. For example, the described hardware component embodiments are merely examples. For example, division by ones is a simple logical functional division. During actual implementation, another separation method may be used. For example, multiple blocks or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual connections or direct connections or communication connections shown or discussed may be implemented through some interfaces. Indirect connections or communication connections between hardware components or units may be implemented in electronic, mechanical, or other forms.

[00362] Blocks described as separate components may or may not be physically separate, and components shown as blocks may or may not be physical blocks. More specifically, the components may be located in a single location or may be distributed across multiple network units. Some or all of the blocks may be selected depending on the actual requirements to achieve the objectives of the solutions in the embodiments.

[00363] In addition, the functional blocks in embodiments of this application may be combined into a single processing block, each of the blocks may exist separately physically, or two or more blocks may be combined into a single block.

[00364] When functions are implemented as a software function block and sold or used as a standalone product, the functions may be stored on a computer-readable storage medium. Based on this understanding, the technical solutions of this application, in essence or part contributing to the prior art, or some of the technical solutions may be implemented in the form of a software product. The computer program product is stored in a storage medium and includes a plurality of instructions for instructing a computer device (which may be, for example, a personal computer, a server, or a network device) to perform all or some of the steps of the methods described in the embodiments of this application. The above-mentioned storage medium includes: any medium that can store program code, such as a USB flash drive, removable hard disk, read only memory, ROM, random access memory, RAM, magnetic disk or optical disk.

[00365] The above portions of the description are only specific implementations of this application and are not intended to limit the scope of protection under this application. Any change or substitution readily determined by one skilled in the art within the technical scope disclosed in this application shall fall within the scope of protection of this application. Therefore, the scope of protection under this application must correspond to the scope of protection under the claims.

Claims (68)

1. Communication method containing determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used to transmit data, wherein the first time-frequency resource contains a first time unit in the time domain and contains a data channel resource in the frequency domain, and said first information contains at least one of the following: control channel; control channel demodulation pilot signal; data channel demodulation pilot; second stage control information; phase tracking reference signal, PTRS; And Channel State Information Reference Signal, CSI-RS. 2. The method according to claim 1, in which the amount The REs that are in the first time-frequency resource and that are used to transmit second stage control information satisfy: , Where represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, represents the modulation order of the control channel, represents a scale factor that relates to a resource for the second stage control information and which is indicated by the first control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of physical resource blocks, PRBs, , represents the number of characters contained in a direct connection communication slot, represents the number of symbols occupied by the PSFCH, or , represents the number of subcarriers in the bandwidth for data link scheduling and represents a number that refers to subcarriers in the control channel bandwidth on symbol l and that is configured by the higher layer RRC. 3. The method according to claim 1 or 2, in which the method further comprises determining, based on the number of REs that are in the first time-frequency resource and that are used for data transmission, the transport block size, TBS, for data transmission, wherein in the process of determining the TBS value is pre-configured. 4. The method according to claim 2 or 3, in which the value is 0. 5. Method according to any one of paragraphs. 2-4, in which configured via higher level RRC. 6. The method according to claim 1, in which the first time-frequency resource contains first sub-resources, wherein the first sub-resource contains a first unit of time in the time domain and contains one subchannel in the data channel resource in the frequency domain and is a positive integer; the first information consists of first sub-information and second sub-information, the first sub-information being a control channel, a control channel demodulation pilot and second stage control information, and the second sub-information comprising at least one of a data channel demodulation pilot, PTRS or CSI-RS; And determining, based on the number of REs that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data, comprising: determining, based on the number of REs that are in each first sub-resource and that are used to transmit the second sub-information, the sum of the numbers of REs that are in each first sub-resource and that are used to transmit the data and the first sub-information; And determining, based on the sum of the numbers of REs that are in each first sub-resource and which are used to transmit data and the first sub-information, and the number of REs that are in the first time-frequency resource and which are used to transmit the first sub-information, the number of REs that are in the first frequency-time resource and which are used for data transmission. 7. The method according to claim 6, in which the sum of the quantities of RE that are in the i -th first sub-resource in the first time-frequency resource and that are used to transmit data and first sub-information satisfies the following relationship: , Where represents the sum of the quantities of RE that are in the i -th first sub-resource and that are used to transmit data and first sub-information, and i =0, 1, ..., ; And represents the number of subcarriers in a physical resource block, PRB, represents the number of PRBs in the subchannel, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i -th first sub-resource and that are used to transmit the data channel demodulation pilot, and contains the number of REs that are in the i -th first sub-resource and that are used for PTRS and/or CSI-RS transmission. 8. The method according to claim 7, in which the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies: , Where represents the number of REs that are in the first time-frequency resource and that are used for data transmission, represents the sum of the numbers of REs that are in the first time-frequency resource and that are used to transmit the control channel and the control channel demodulation pilot signal in the first sub-information, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information in the first sub-information. 9. Communication hardware component containing a processing unit configured to determine, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data, when wherein the first time-frequency resource contains a first unit of time in the time domain and contains a data channel resource in the frequency domain, and said first information contains at least one of the following: control channel; control channel demodulation pilot signal; data channel demodulation pilot; second stage control information; phase tracking reference signal, PTRS; And Channel State Information Reference Signal, CSI-RS. 10. The hardware component according to claim 9, in which the quantity The REs that are in the first time-frequency resource and that are used to transmit second stage control information satisfy: , Where represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, represents the modulation order of the control channel, represents a scale factor that relates to a resource for the second stage control information and which is indicated by the first control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of physical resource blocks, PRBs, , represents the number of characters contained in a direct connection communication slot, represents the number of symbols occupied by the PSFCH, or , represents the number of subcarriers in the bandwidth for data link scheduling and represents a number that refers to subcarriers in the control channel bandwidth on symbol l and that is configured by the higher layer RRC. 11. The hardware component according to claim 10, wherein the processing unit is further configured to determining based on the number of REs that are in the first time-frequency resource and that are used for data transmission, the transport block size, TBS, for data transmission, wherein in the process of determining the TBS value is pre-configured. 12. The hardware component according to claim 10 or 11, in which the value is 0. 13. Hardware component according to any one of paragraphs. 10-12, in which configured via higher level RRC. 14. The hardware component of claim 9, wherein the first time-frequency resource comprises first sub-resources, wherein the first sub-resource contains a first unit of time in the time domain and contains one subchannel in the data channel resource in the frequency domain and is a positive integer; the first information consists of first sub-information and second sub-information, the first sub-information being a control channel, a control channel demodulation pilot and second stage control information, and the second sub-information comprising at least one of a data channel demodulation pilot, PTRS or CSI-RS; And determining, based on the number of REs that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used for transmitting data, comprising: determining, based on the number of REs that are in each first sub-resource and that are used to transmit the second sub-information, the sum of the numbers of REs that are in each first sub-resource and that are used to transmit the data and the first sub-information; And determining, based on the sum of the numbers of REs that are in each first sub-resource and which are used to transmit data and the first sub-information, and the number of REs that are in the first time-frequency resource and which are used to transmit the first sub-information, the number of REs that are in the first frequency-time resource and which are used for data transmission. 15. The hardware component of claim 14, wherein the sum of the numbers of REs that are in the i -th first sub-resource in the first time-frequency resource and that are used to transmit data and first sub-information satisfies the following relationship: , Where represents the sum of the quantities of RE that are in the i -th first sub-resource and that are used to transmit data and first sub-information, and i =0, 1, ..., ; And represents the number of subcarriers in a physical resource block, PRB, represents the number of PRBs in the subchannel, represents the number of characters in the first time unit that are available for encoding, , represents the number of characters in the first time unit, represents the transport block correction factor, represents the number of REs that are in the i -th first sub-resource and that are used to transmit the data channel demodulation pilot, and contains the number of REs that are in the i -th first sub-resource and that are used for PTRS and/or CSI-RS transmission. 16. The hardware component of claim 15, wherein the number of REs that are in the first time-frequency resource and that are used for data transmission satisfies: , Where represents the number of REs that are in the first time-frequency resource and that are used for data transmission, represents the sum of the numbers of REs that are in the first time-frequency resource and that are used to transmit the control channel and the control channel demodulation pilot signal in the first sub-information, and represents the number of REs that are in the first time-frequency resource and that are used to transmit second stage control information in the first sub-information. 17. A hardware communication component comprising a memory and a processor, wherein the memory stores a program that is executed on the processor, and when said program is executed, the processor implements a communication method comprising determining, based on the number of resource elements, REs, that are in the first time-frequency resource and that are used to transmit the first information, the number of REs that are in the first time-frequency resource and that are used to transmit data, wherein the first time-frequency resource contains a first time unit in the time domain and contains a data channel resource in the frequency domain, and said first information contains at least one of the following: control channel; control channel demodulation pilot signal; data channel demodulation pilot; second stage control information; phase tracking reference signal, PTRS; or Channel State Information Reference Signal, CSI-RS. 18. The communication hardware component according to claim 17, in which the number The REs that are in the first time-frequency resource and that are used to transmit second stage control information satisfy: , Where represents the allowable size of the second stage control information payload, represents the bit length of the cyclic redundancy check, CRC, second stage control information, represents the bit rate of the data channel, represents the modulation order of the control channel, represents a scale factor that relates to a resource for the second stage control information and which is indicated by the first control information, represents a scale factor of the resource used to transmit second stage control information, and represents the number of REs that are set to satisfy that the second stage control information occupies an integer number of physical resource blocks, PRBs, , represents the number of characters contained in a direct connection communication slot, represents the number of symbols occupied by the PSFCH, or , represents the number of subcarriers in the bandwidth for data link scheduling and represents a number that refers to subcarriers in the control channel bandwidth on symbol l and that is configured by the higher layer RRC. 19. The communication hardware component of claim 18, wherein the method further comprises determining, based on the number of REs that are in the first time-frequency resource and that are used for data transmission, the transport block size, TBS, for data transmission, wherein in the process of determining the TBS value is pre-configured. 20. The communication hardware component according to claim 18 or 19, in which the value is 0.

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