WO2022148404A1 - Data transmission method, data transmission apparatus, communication device and storage medium - Google Patents

Abstract

Provided are a data transmission method and apparatus, and a communication device and a storage medium, which relate to the technical field of communications. The data transmission method comprises: determining a first amount and a second amount according to the length of a first field, so as to execute data transmission on the basis of the first amount and/or the second amount, wherein the first field is used for indicating a channel coding redundancy version (RV) of a transport block; the first amount is used for indicating the number of transport blocks that use a first length to indicate the channel coding redundancy version (RV), and the second amount is used for indicating the number of transport blocks that use a second length to indicate the channel coding redundancy version (RV), the first length being different from the second length. By means of the embodiments of the present application, the problem in the related art of the loss of a combination gain of data HARQ retransmission being relatively large is solved.

Description

Data transmission method, data transmission device, communication equipment and storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to the Chinese Patent Application No. 202110026522.9 filed with the State Intellectual Property Office on January 8, 2021, the disclosure of which is incorporated herein by reference in its entirety.

technical field

The present application relates to the field of communication technologies, and in particular, the present application relates to a data transmission method, a data transmission device, a communication device and a storage medium.

Background technique

In the research discussion of the 5th ^Generation (5G) project, in order to reduce the high-frequency subcarrier spacing scenarios and reduce the new demand for PDCCH channel detection capability, a method that supports a DCI scheduling is proposed. Multiple PDSCH/PUSCH, and each PDSCH/PUSCH transmits a different transport block TB data transmission scheme.

In this data transmission scheme, for PUSCH, a channel coding redundancy version RV is designed to realize incremental redundancy HARQ (Hybrid Automatic Repeat Request) transmission. However, limited by the number of channel coding redundancy versions RV, resulting in The combined gain loss of data HARQ retransmission is relatively large.

Therefore, for PDSCH, a new data transmission scheme needs to be proposed to solve the problem of large loss of combining gain of data HARQ retransmission in the related art.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a data transmission method, a data transmission apparatus, a communication device, and a storage medium, which can at least solve the problem of large loss of data HARQ retransmission combining gain in the related art. The technical solution is as follows:

According to an aspect of the embodiments of the present application, a data transmission method is provided, the method comprising: determining a first quantity and a second quantity according to the length of a first field, so as to be based on the first quantity and/or the first quantity. Two numbers are used to perform data transmission; wherein, the first field is used to indicate the channel coding redundancy version RV of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version RV number, the second number is used to indicate the number of transport blocks using the second length to indicate the channel coding redundancy version RV; the first length is different from the second length.

In a possible implementation manner, the determining the first quantity and the second quantity according to the length of the first field includes: determining the length of the first field and the number of actually scheduled transport blocks; The length of a field and the number of actually scheduled transport blocks determine the first number; the second number is determined according to the first number and the number of actually scheduled transport blocks.

In a possible implementation manner, the determining the first number according to the length of the first field and the number of actually scheduled transmission blocks includes: determining the length of the first field and the number of actually scheduled transmissions The first difference between the numbers of blocks; the first number is determined according to the relationship between the first difference and the number of actually scheduled transmission blocks.

In a possible implementation manner, the determining the first number according to the relationship between the first difference value and the number of actually scheduled transport blocks includes: if the first difference value is greater than the actual scheduled transmission block The number of transport blocks that are actually scheduled, and the number of actually scheduled transport blocks is taken as the first number.

In a possible implementation manner, the determining the first number according to the relationship between the first difference and the number of actually scheduled transmission blocks includes: if the first difference is less than or equal to The number of actually scheduled transmission blocks, and the first difference is used as the first number.

In a possible implementation manner, the determining the second number according to the first number and the number of actually scheduled transport blocks includes: determining the number of actually scheduled transport blocks and the first number the second difference between; take the second difference as the second quantity.

In a possible implementation manner, the determining the second number according to the first number and the number of actually scheduled transport blocks includes: determining the number of actually scheduled transport blocks and the first number The second difference between the two; according to the relationship between the second difference and the set value, the second quantity is determined.

In a possible implementation manner, the determining the second quantity according to the relationship between the second difference value and the set value includes: if the second difference value is greater than the set value, adding The second difference is used as the second quantity.

In a possible implementation manner, the determining the second quantity according to the relationship between the second difference value and the set value includes: if the second difference value is less than or equal to the set value , taking the set value as the second quantity.

In a possible implementation manner, the first field is included in downlink control information.

In a possible implementation manner, the first field includes an RV field used to indicate a channel coding redundancy version RV of a transport block, and/or a reserved bit in the downlink control information.

In a possible implementation manner, the reserved bits in the downlink control information include at least reserved bits in the new data indication NDI field used to indicate new data.

In a possible implementation manner, the number of reserved bits in the NDI field is determined according to the actual number of scheduled transmission blocks.

In a possible implementation manner, the RV field and the NDI field are filled into the same field in the downlink control information.

In a possible implementation manner, the first number of parameters indicating the channel coding redundancy version RV, and/or the second number of parameters indicating the channel coding redundancy version RV fills the first field continuously .

In a possible implementation manner, the first number of parameters indicating the channel coding redundancy version RV, and/or the second number of parameters indicating the channel coding redundancy version RV non-consecutively cross-fill the first field.

According to an aspect of the embodiments of the present application, there is provided a data transmission apparatus, comprising: a quantity determination module, configured to determine a first quantity and a second quantity according to the length of the first field, so as to be based on the first quantity and/or the second number performs data transmission; wherein the first field is used to indicate the channel coding redundancy version RV of the transport block; the first number is used to indicate the transmission of the channel coding redundancy version RV using the first length The number of blocks, where the second number is used to indicate the number of transport blocks that use the second length to indicate the channel coding redundancy version RV; the first length is different from the second length.

In a possible implementation manner, the quantity determination module includes: a transmission block quantity determination unit, configured to determine the length of the first field and the number of actually scheduled transmission blocks; a first quantity determination unit, configured to The first quantity is determined according to the length of the first field and the number of actually scheduled transmission blocks; the second quantity determination unit is configured to determine the first quantity according to the first quantity and the number of actually scheduled transmission blocks the second quantity.

In a possible implementation manner, the first quantity determination unit includes: a first difference value determination subunit, configured to determine a first difference between the length of the first field and the number of actually scheduled transport blocks value; a first processing subunit, configured to determine the first number according to the relationship between the first difference and the number of actually scheduled transmission blocks.

In a possible implementation manner, the first processing subunit includes: a first response subunit, configured to, if the first difference is greater than the number of the actually scheduled transport blocks, send the number of the actually scheduled transport blocks number as the first number.

In a possible implementation manner, the first processing subunit includes: a second response subunit, configured to, if the first difference value is less than or equal to the number of actually scheduled transmission blocks, send the first difference value as the first quantity.

In a possible implementation manner, the second quantity determination module includes: a second difference determination unit, configured to determine a second difference between the number of actually scheduled transmission blocks and the first quantity; A second quantity determination unit, configured to use the second difference as the second quantity.

In a possible implementation manner, the second quantity determination module includes: a second difference determination unit, configured to determine a second difference between the number of actually scheduled transmission blocks and the first quantity; A second processing unit, configured to determine the second quantity according to the relationship between the second difference and the set value.

In a possible implementation manner, the second processing unit includes: a third response subunit, configured to use the second difference value as the second difference value if the second difference value is greater than the set value quantity.

In a possible implementation manner, the second processing unit includes: a fourth response subunit, configured to use the set value as the first value if the second difference is less than or equal to the set value Two quantity.

In a possible implementation manner, the first field is included in downlink control information.

In a possible implementation manner, the first field includes an RV field used to indicate a channel coding redundancy version RV of a transport block, and/or a reserved bit in the downlink control information.

In a possible implementation manner, the reserved bits in the downlink control information include at least reserved bits in the new data indication NDI field used to indicate new data.

In a possible implementation manner, the number of reserved bits in the NDI field is determined according to the actual number of scheduled transmission blocks.

In a possible implementation manner, the RV field and the NDI field are filled into the same field in the downlink control information.

In a possible implementation manner, the first number of parameters indicating the channel coding redundancy version RV, and/or the second number of parameters indicating the channel coding redundancy version RV fills the first field continuously .

In a possible implementation manner, the first number of parameters indicating the channel coding redundancy version RV, and/or the second number of parameters indicating the channel coding redundancy version RV non-consecutively cross-fill the first field.

According to an aspect of the embodiments of the present application, a communication device is provided, including: a memory, a transceiver, and a processor; wherein the memory is used to store a computer program; the transceiver is used to control the processor sending and receiving data; the processor is configured to read the computer program in the memory and execute the data transmission method described above. The communication equipment includes at least a base station and a terminal.

According to an aspect of the embodiments of the present application, there is provided a storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the above-mentioned data transmission method.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments of the present application.

FIG. 1 is a schematic diagram of an implementation environment according to the present application.

Fig. 2 is a flow chart of a data transmission method according to an exemplary embodiment.

Fig. 3 is a flowchart showing another data transmission method according to an exemplary embodiment.

Fig. 4 is a flowchart showing another data transmission method according to an exemplary embodiment.

FIG. 5 is a flowchart of step 42 in the embodiment corresponding to FIG. 4 in one embodiment.

FIG. 6 is a flowchart of step 422 in the corresponding embodiment of FIG. 5 in one embodiment.

FIG. 7 is a flowchart of step 4222 in the corresponding embodiment of FIG. 6 in one embodiment.

FIG. 8 is a flowchart of step 423 in the corresponding embodiment of FIG. 5 in one embodiment.

FIG. 9 is a flowchart of step 4232 in the corresponding embodiment of FIG. 8 in one embodiment.

FIG. 10 is a schematic diagram of reserved bits according to the present application.

11a-11g are schematic diagrams of a first field including a first parameter and/or a second parameter according to the present application.

Fig. 12 is a flowchart showing another data transmission method according to an exemplary embodiment.

Fig. 13 is a structural block diagram of a data transmission apparatus according to an exemplary embodiment.

Fig. 14 is a structural block diagram of another data transmission apparatus according to an exemplary embodiment.

Fig. 15 is a structural block diagram of a base station according to an exemplary embodiment.

Fig. 16 is a structural block diagram of a terminal according to an exemplary embodiment.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals identify the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but not to be construed as a limitation on the present application.

It will be understood by those skilled in the art that unless expressly stated otherwise, the singular forms "a", "an", "the" and "the" can also include the plural forms, and "a plurality" refers to two or two more than one, and other quantifiers are similar. It should be further understood that the word "comprising" used in the specification of this application refers to the presence of stated features, integers, steps, operations, elements and/or components, but does not preclude the presence or addition of one or more other features, Integers, steps, operations, elements, components and/or groups thereof. It will be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Furthermore, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The word "and/or" used here describes the relationship of the related objects, and means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist simultaneously, and B exists alone. a situation. The character "/" generally indicates that the associated objects are an "or" relationship.

The following is the introduction and explanation of several terms involved in this application:

DCI, the English full name is downlink Control Information, and the Chinese meaning is downlink control information.

PDCCH, English full name is Physical downlink control channel, Chinese meaning is physical downlink control channel.

PDSCH, English full name is Physical downlink shared channel, Chinese meaning is physical downlink shared channel.

PUSCH, English full name is Physical uplink shared channel, Chinese meaning is physical uplink shared channel.

TB, English full name is Transport Block, Chinese meaning is transport block.

RV, the English full name is Redundancy Version, and the Chinese meaning is the channel coding redundancy version. In the downlink control information DCI, an RV field is included for indicating the channel coding redundancy version RV of the transport block TB.

NDI, English full name is New data indicator, Chinese meaning is new data indicator. In the downlink control information DCI, an NDI field is included to indicate new data.

HARQ, English full name is Hybrid Automatic Repeat Request, Chinese meaning is Hybrid Automatic Repeat Request.

IR, the full English name is Incremental redundancy, and the Chinese meaning is incremental redundancy.

NR, the full name in English is New radio, and the Chinese meaning is new air interface. In this application, it refers to the air interface technology in the fifth generation mobile communication technology (5th ^Generation , 5G for short) project.

UE, the English full name is User Equipment, and the Chinese meaning is user equipment, which can also be called user terminal, terminal, etc.

Length, used to indicate the length of the information or the length of the field, can also be understood as the number of bits or the number of bits of the information or field. For example, if the field A contains 8 bits of data, then the length/number of bits/number of bits of the field A 8 bits or 8 bits.

A reserved (reserve) bit is used to indicate an idle and unused bit or bit in the field, and the idle and unused bit or bit may also be considered to be an invalid bit or an invalid bit.

As mentioned above, in the data transmission scheme of the related art, for PUSCH, the number of channel coding redundancy versions RV is limited, resulting in a large loss of combining gain of data HARQ retransmission.

First of all, the channel coding redundancy version RV is used to realize incremental redundancy HARQ transmission, that is, the redundant bits generated by the encoder are divided into several groups, and each channel coding redundancy version RV defines a starting point of data transmission. The transmission and each HARQ retransmission use different channel coding redundancy versions RV, that is, the starting point of the first transmission and each HARQ retransmission are different, so as to realize the gradual accumulation of redundant bits, and then complete the incremental redundancy. remaining HARQ transmission.

Currently, the channel coding redundancy version RV is indicated by the RV field in the downlink control information DCI.

Table 1

Bit meanings in the RV field	Channel coding redundancy version RV
0	0
1	1

Table 2

Bit meanings in the RV field	Channel coding redundancy version RV
00	0
01	1
10	2
11	3

As shown in Table 1, the channel coding redundancy version RV includes 0 and 1, which are respectively indicated by 1 bit in the RV field; as shown in Table 2, the channel coding redundancy version RV includes 0, 1, 2, and 3, which are respectively indicated by 2-bit indication in the RV field.

In theory, the number of channel coding redundancy versions RV is different, and the combining gain of data HARQ retransmission is also different. It is generally believed that the more the number of channel coding redundancy versions RV, the higher the combining gain of data HARQ retransmission. big.

For PUSCH, the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N (for example, N=8). In each scheduling process, the actual number of scheduled transport blocks TB is M (M<= N) and use 1 bit to indicate the channel coding redundancy version RV of the transport block. That is to say, in the data transmission process, the number of available channel coding redundancy versions RV is only 2 (0 and 1), compared to the number of available channel coding redundancy versions RV when using 2-bit indication. There are 4 (0-3), and the combining gain is small, so the combined gain of the data HARQ retransmission is lost, especially in the application scenario with a high channel coding rate, the performance loss will be greater.

From this, it can be seen that the related art still has the defect that the combined gain of the data HARQ retransmission is greatly lost.

Therefore, the data transmission method, data transmission device, base station, terminal and storage medium provided by this application at least solve the above technical problems of the related art.

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only Some embodiments of the present application are not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

FIG. 1 is a schematic diagram of an implementation environment involved in a data transmission method. The implementation environment includes a wireless communication system 100, which may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access ( Wideband Code Division Multiple Access (WCDMA) system, general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access , WiMAX) system, may also be 5G New Radio (New Radio, NR) system, etc., which are not limited here.

The wireless communication system 100 includes a terminal 110 and a base station 130, and may also include a core network part, such as an evolved packet system (Evolved Packet System, EPS).

Specifically, the terminal 110 is an electronic device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. For example, the terminal 110 may be a mobile terminal device, For example, a mobile phone (or "cellular" phone) can also be a computer with a mobile terminal device, such as a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device. In different systems, the terminal 110 may have different names, and may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiated Protocol (SIP) phone, a wireless local loop ( Wireless Local Loop, WLL) station, Personal Digital Assistant (Personal Digital Assistant, PDA) and other equipment. The terminal 110 may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile, remote station, access point , remote terminal, access terminal, user terminal, user agent, and user device, which are not limited here.

As an access network device, the base station 130 may be called an access point according to different application scenarios, or may be an electronic device in the access network that communicates with the terminal 110 through one or more sectors on the air interface, or other names. . The base station 130 may be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the terminal 110 and the rest of the access network, which may include the Internet Protocol network. The base station 130 may also coordinate attribute management for the air interface. For example, the base station 130 may be a base transceiver station (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or It is a base station (Node B) in Wide-band Code Division Multiple Access (WCDMA), and it can also be an evolved network device (evolutional Node B) in a long term evolution (long term evolution, LTE) system. , eNB or e-NodeB), a 5G base station (gNB) in the 5G network architecture (next generation system), or a Home evolved Node B (HeNB), a relay node, a home base station ( femto), pico base station (pico), etc., are not limited here.

A wireless connection is established between the base station 130 and the terminal 110 through a wireless air interface, so that the terminal 110 establishes a connection with the cell where the base station 130 is located. data transmission.

For example, the base station 130 will perform data transmission related to the first number and/or the second number, or the terminal 110 will perform data reception related to the first number and/or the second number.

Referring to FIG. 2 , an embodiment of the present application provides a data transmission method, and the method can be executed by the base station 130 in the implementation environment shown in FIG. 1 .

As shown in Figure 2, the method may include the following steps:

Step 21, determine the first quantity.

The first number is used to indicate the number of transport TB blocks that use the first length to indicate the channel coding redundancy version RV.

In a possible implementation, the first length is two bits. That is, 2 bits are used to indicate the channel coding redundancy version RV of the transport block TB, so that the channel coding redundancy version RV can be increased to 4, ie, 0, 1, 2, 3.

Regarding the determination of the first quantity, including but not limited to the following determination methods:

First, the first number is determined by the table provided by the interface protocol between the base station and the terminal. For example, as shown in Table 3, the maximum number N of transport blocks TB allowed to be scheduled in one downlink control information DCI and the number N of the actually scheduled transport blocks After the number M of transport blocks TB is determined, the base station can determine the first number by looking up a table.

table 3

In addition, it can be understood that each element in Table 3 exists independently, and these elements are exemplarily listed in the same table, but it does not mean that all elements in Table 3 must be exist. The value of each element in Table 3 is independent of the value of any other element in Table 3. Therefore, those skilled in the art can understand that the value of each element in Table 3 is an independent embodiment.

Of course, in other embodiments, there are other combinations of N and M, which are not listed in Table 3, and this embodiment does not constitute a specific limitation on this.

Second, the first number is determined by a table configured by the base station. For example, Table 3 is configured by the base station according to different N and M. As shown in Table 3, in one downlink control information DCI, the maximum number of scheduled transport blocks TB is allowed. After the number N and the number M of the actually scheduled transmission blocks TB are determined, the base station can determine the first number by looking up a table.

In the third type, the first quantity is determined by the base station according to several candidate values provided by the base station and the terminal interface protocol. For example, the base station selects one of the several candidate values as the first quantity.

Fourth, the first quantity is determined by the base station according to the identifiers corresponding to several candidate values provided by the base station and the terminal interface protocol. For example, the base station selects one of several candidate values, and uses the corresponding identifier as the first quantity It is sent to the terminal, and the terminal can determine the candidate value corresponding to the identifier by looking up the table. The correspondence between the identifiers stored in the table and the candidate values is determined by the interface protocol between the base station and the terminal.

Fifth, the first quantity is determined by the identifier configured by the base station. For example, the base station sends the identifier as the first quantity to the terminal, and the terminal can determine the candidate value corresponding to the identifier by looking up a table. The correspondence between the identifiers stored in the table and the candidate values is determined by the base station.

The sixth type is determined through negotiation between the base station and the terminal. For example, the terminal reports the acceptable value range, and the base station selects a first number that satisfies the value range and notifies the terminal.

The seventh type is determined by the base station itself, for example, the base station directly sends the first quantity to the terminal.

Step 22, performing data transmission based on the first quantity.

For example, for a transport block TB transmitted on the physical downlink shared channel PDSCH, the data in the transport block TB may be downlink control information DCI containing a first number of first parameters indicated by a first length The channel coding redundancy version RV of the transmission block; the data in the transmission TB may also be HARQ retransmission of the data based on the first parameter of the first quantity, which is not limited here.

Through the above process, through the determination of the first number, the number of channel coding redundancy versions RV is increased. There is a problem that the combined gain loss of data HARQ retransmission is relatively large.

Referring to FIG. 3 , an embodiment of the present application provides a data transmission method, and the method can be executed by the base station 130 in the implementation environment shown in FIG. 2 .

As shown in Figure 3, the method may include the following steps:

Step 31, in response to the determination of the first quantity, determine a second quantity.

The second number is used to indicate the number of transport blocks TB using the second length to indicate the channel coding redundancy version RV.

The applicant realizes that increasing the bits used to indicate the channel coding redundancy version RV of the transport block TB, i.e. from 1 bit to 2 bits, will increase the combining gain of data HARQ retransmission, and will also cause downlink control The overhead in the information DCI increases, which may cause the receiving performance to fail to meet the actual requirements of the application scenario.

To this end, in response to the determination of the first number, the base station may determine a second number such that different transport blocks TB can use the first length to indicate both the CCR version RV and the second length to indicate the CCR version RV . It can also be understood that for each transport block TB, in the downlink control information DCI, the length of the information used to indicate the channel coding redundancy version RV is dynamically adjustable, which may be the first length or the second length. length, in this way to reduce the overhead in the downlink control information DCI.

In one possible implementation, the second length is one bit. In a possible implementation, the first length is two bits, and the second length is one bit.

Regarding the determination of the second quantity, it is the same as the determination of the first quantity, including but not limited to the following determination methods: determined by the table provided by the interface protocol between the base station and the terminal, determined by the table configured by the base station, determined by the base station according to the base station and the terminal Determined by several candidate values provided by the interface protocol of the terminal, determined by the base station according to the identifier corresponding to several candidate values provided by the interface protocol of the base station and the terminal, determined by the identifier configured by the base station, determined by negotiation between the base station and the terminal, determined by the base station Determine for yourself and so on.

Step 32, performing data transmission based on the first quantity and/or the second quantity.

For example, for a transport block TB transmitted on the physical downlink shared channel PDSCH, the data in the transport block TB may be downlink control information DCI containing a first number of first parameters and/or a second number of second parameters , the first parameter uses the first length to indicate the channel coding redundancy version RV of the transport block, and the second parameter uses the second length to indicate the channel coding redundancy version RV of the transport block; the data in the transport block TB can also be based on the A number of first parameters and/or a second number of second parameters are used for data HARQ retransmission, which are not limited herein.

Through the above process, by determining the first quantity and/or the second quantity, the information length indicated by the channel coding redundancy versions used in different transport blocks can be dynamically adjusted, which can increase the combining gain of data HARQ retransmission. , and will not generate excessive overhead in the downlink control information DCI, which is beneficial to the improvement of reception performance.

Referring to FIG. 4 , an embodiment of the present application provides a data transmission method, and the method can be executed by the base station 130 in the implementation environment shown in FIG. 2 .

As shown in Figure 4, the method may include the following steps:

Step 42, according to the length of the first field, determine the first number and the second number to perform data transmission based on the first number and/or the second number.

The first field is used to indicate the channel coding redundancy version RV of the transport block.

It should be noted here that the first field is not limited to the RV field in the downlink control information DCI, that is, the first field is not limited to being included in the downlink control information DCI, but can also be included in the downlink control information DCI. In the data, or, the first field may also be composed of the RV field in the downlink control information DCI and any reserved bits in the downlink control information DCI, for example, the reserved bits refer to the downlink control information DCI The reserved bits in the NDI field (for example: when the maximum number of scheduled transport blocks TB is 8, and the actual number of scheduled transport blocks TB is 6, only 6 bits are used in the NDI field, and the remaining 8- 6=2 bits are regarded as reserved), which is not limited here.

It can be seen from this that, assuming that the maximum number of scheduled transport blocks TB for a downlink control information DCI is 8 bits, then the number of bits of the RV field is 8 bits, and the length of the first field may be 8 bits, or it may be Beyond 8 bits, the first number is as large as possible in this way, thereby ensuring more channel coding redundancy versions RV.

In a possible implementation, as shown in FIG. 5 , step 42 may include the following steps:

Step 421: Determine the length of the first field and the number of actually scheduled transport blocks.

The number of actually scheduled transport blocks is indicated by the downlink control information DCI configured by the base station.

Step 422: Determine the first number according to the length of the first field and the number of actually scheduled transport blocks.

Step 423: Determine the second number according to the first number and the number of actually scheduled transmission blocks.

Thereby, after determining the first number and/or the second number, data transmission can be performed based on the first number and/or the second number.

The process of determining the first number will be described below by taking the base station's own determination of the first number as an example.

Referring to FIG. 6 , a possible implementation manner is provided in the embodiment of the present application, and step 422 may include the following steps:

Step 4221: Determine the first difference between the length of the first field and the number of actually scheduled transport blocks.

Step 4222: Determine the first number according to the relationship between the first difference and the number of actually scheduled transport blocks.

For example, assuming that one downlink control information DCI allows the maximum number of scheduled transport blocks TB N=8, the number of bits of the RV field is 8, and assuming that the first field is the RV field, then the number of bits of the first field is 8. The length RV_bit_total is also 8 bits.

At the same time, it is assumed that the number M of the actually scheduled transport blocks TB indicated in the downlink control information DCI is 5, then the first difference = the length of the first field RV_bit_total - the number M of the actually scheduled transport blocks TB = 8-5=3.

At this time, the first number M2 is 3, that is, M2=RV_bit_total-M=N-M=3.

That is, among the actually scheduled 5 transport blocks TB, 3 transport blocks TB may use 2 bits to indicate the channel coding redundancy version RV.

Referring to FIG. 7 , a possible implementation is provided in the embodiment of the present application, and step 4222 may include the following steps:

Step 4222a, if the first difference is greater than the number of actually scheduled transport blocks, the number of actually scheduled transport blocks is taken as the first number.

For example, assuming that one downlink control information DCI allows the maximum number of scheduled transport blocks TB N=8, the number of bits of the RV field is 8, and assuming that the first field is the RV field, then the number of bits of the first field is 8. The length RV_bit_total is also 8 bits.

At the same time, assuming that the number M of transport blocks TB that is actually scheduled in the downlink control information DCI is 2, then the first difference = the length of the first field RV_bit_total - the number M of transport blocks that are actually scheduled = 8-2=6.

At this time, the first number M2 is 6, that is, M2=RV_bit_total-M=N-M=6.

That is to say, among the 2 transport blocks TB actually scheduled, 6 transport blocks TB may use 2 bits to indicate the channel coding redundancy version. It can be understood that in this case, it is beyond the effective range of the actual scheduling of the transport block TB. , therefore, the first number M2 can only be the number M of the actually scheduled transport blocks TB.

That is, the first number M2 is 2=min(M, M2)=min(2, 6).

Continuing to refer to FIG. 7 , a possible implementation manner is provided in the embodiment of the present application, and step 4222 may include the following steps:

Step 4222b, if the first difference is less than or equal to the number of actually scheduled transport blocks, the first difference is used as the first number.

In this case, the effective range of the actual scheduling of the transport block TB is not exceeded, so the first difference is the first number M2. For example, in the above example, the first number M2 is 3, that is, in the actually scheduled 5 transport blocks TB, 3 transport blocks TB may use 2 bits to indicate the channel coding redundancy version RV.

Under the action of the above-mentioned embodiments, a determination method for the base station to determine the first quantity by itself is provided.

The process of determining the second quantity is described below by taking the base station's own determination of the second quantity as an example.

Referring to FIG. 8 , a possible implementation is provided in the embodiment of the present application, and step 423 may include the following steps:

Step 4231: Determine a second difference between the number of actually scheduled transport blocks and the first number.

Step 4232: Determine the second quantity according to the relationship between the second difference and the set value.

For example, assuming that one downlink control information DCI allows the maximum number of scheduled transport blocks TB N=8, the number of bits of the RV field is 8, and assuming that the first field is the RV field, then the number of bits of the first field is 8. The length RV_bit_total is also 8 bits.

Assuming that the number M of actually scheduled transport blocks TB indicated in the downlink control information DCI is 5, then the first difference = the length of the first field RV_bit_total - the number M of actually scheduled transport blocks TB = 8 - 5=3. That is, the first number M2 is three, and M2=RV_bit_total-M=N-M=3.

Further, the second difference value=the number M of the actually scheduled transport blocks TB-the first number M2=5-3=2. That is, the second number M1 is 2, and M1=M-M2=2.

That is to say, among the actually scheduled 5 transport blocks TB, 3 transport blocks TB may use 2 bits to indicate the channel coding redundancy version RV, and 2 transport blocks TB may use 1 bit to indicate the channel coding redundancy version RV.

Referring to FIG. 9 , a possible implementation is provided in the embodiment of the present application, and step 4232 may include the following steps:

Step 4232a, if the second difference is greater than the set value, the second difference is used as the second quantity M1.

The set value can be flexibly set according to the actual requirements of the application scenario. For example, in this embodiment, the set value is zero.

In this case, the effective range of the actual scheduling of the transport block TB is not exceeded, therefore, the second difference is the first number M2. For example, in the above example, the first number M2 is 3, and the second number M1 is 2. In the actually scheduled 5 transport blocks TB, 3 transport blocks TB may use 2 bits to indicate the channel coding redundancy version RV, there are 2 transport blocks TB using 1 bit to indicate the channel coding redundancy version RV.

Continuing to refer to FIG. 9 , a possible implementation is provided in the embodiment of the present application, and step 4232 may include the following steps:

Step 4232b, if the second difference is less than or equal to the set value, set the set value as the second quantity M1.

The set value can be flexibly set according to the actual requirements of the application scenario. For example, in this embodiment, the set value is zero.

For example, assuming that one downlink control information DCI allows the maximum number of scheduled transport blocks TB N=8, the number of bits of the RV field is 8, and assuming that the first field is the RV field, then the number of bits of the first field is 8. The length RV_bit_total is also 8 bits.

Assuming that the number M of actually scheduled transport blocks TB indicated in the downlink control information DCI is 2, then the first difference = the length of the first field RV_bit_total - the number M of actually scheduled transport blocks TB = 8 - 2=6. That is, the first number M2 is 6, and M2=RV_bit_total-M=N-M=6.

Further, the second difference value=the number M of the actually scheduled transport blocks TB-the first number M2=2-6=-4. That is, the second number M1 is -4, and M1=M-M2=-4.

It can be understood that in this case, the effective range of the actual scheduling of the transport block TB is exceeded, and therefore, the first number M2 can only be a set value, that is, zero.

That is, the second number M1 is 0=max(0, M1)=max(0, -4).

Of course, in other embodiments, if the first number M2 has exceeded the effective range of the actual scheduling of the transport block TB, the first number M2 may be constrained first, that is, the first number M2 is 2=min(2,6), Then, the second quantity M1 is determined based on the constrained first quantity M2, that is, the second quantity M1 is 0=2-2, which does not constitute a specific limitation here.

Then, in this case, step 423 may include the following steps: determining a second difference between the number M of transport blocks TB actually scheduled and the first number M2, and taking the second difference as the second number M1.

Under the action of the above embodiments, a determination method for the base station to determine the second quantity M1 by itself is provided.

During this process, the applicant found that for PUSCH, the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N (for example, N=8). In each scheduling process, the actual scheduled transport blocks The number of TBs is M (M<=N) and 1-bit information is used to indicate the channel coding redundancy version RV of the transport block TB. Then, in order to ensure that the information length (also considered to be the number of bits) of each downlink control information DCI remains unchanged, in the downlink control information DCI, the number of bits of the RV field remains unchanged, that is, it is fixed to one downlink control information. The information DCI allows at most the number N of scheduled transport blocks TB (for example, N=8).

That is to say, no matter whether the number M of the actually scheduled transport blocks TB is equal to N, in the downlink control information DCI, the number of bits of the RV field is fixed to N bits. As shown in FIG. 10 , assuming that the actual number of scheduled transport blocks TB M (for example, M=4) is less than N (for example, N=8), for the RV field, only the first M (4) bits are actually used, and the latter N-M (8-4=4) bits are not used and regarded as reserved bits.

Similarly, in the downlink control information DCI, there are other reserved bits. The remaining reserved bits may be reserved bits in the reserved fields in the interface protocol of the base station and the terminal, or may be reserved bits that appear in the remaining function fields under special circumstances.

For example, the function field is the NDI field, which uses 1 bit to indicate whether the scheduled data is new data or retransmission data. Similarly to the RV field, in order to ensure that the information length (also considered to be the number of bits) of each downlink control information DCI remains unchanged, in the downlink control information DCI, the number of bits of the NDI field remains unchanged, that is, it is fixed as One downlink control information DCI allows at most the number N of scheduled transport blocks TB (for example, N=8). Then, when the number M of the actually scheduled transport blocks TB is less than N, a reserved bit will appear in the NDI field, as shown in Figure 10, for the NDI field, the number of the actually scheduled transport blocks TB When M is 4, only the first M (4) bits are actually used, and the last N-M (8-4=4) bits are not used, which are regarded as reserved bits.

This results in a waste of wireless resources to a certain extent, which is not conducive to improving resource utilization.

Therefore, the applicant further proposes a data transmission method, which can maximize the use of reserved bits in the downlink control information DCI, so as to realize the maximum increase in the downlink control information DCI without increasing the overhead in the downlink control information DCI. Combining gain for big data HARQ retransmissions. The data transmission method may include:

In a possible implementation manner, the first field includes an RV field in the downlink control information DCI, and/or a reserved bit in the downlink control information DCI.

In a possible implementation manner, the reserved bits in the downlink control information DCI include at least the reserved bits in the NDI field.

In one possible implementation, the RV field uses all the bits of the first field.

In a possible implementation manner, the RV field uses the first several bits of the first field, and the reserved bits in the downlink control information DCI use the last several bits of the first field.

In a possible implementation manner, the reserved bits in the downlink control information DCI use the first several bits of the first field, and the RV field uses the last several bits of the first field.

In a possible implementation, the RV field and the NDI field belong to two different fields. It can also be understood that the RV field and the NDI field are filled into two different fields in the downlink control information DCI.

In a possible implementation, the RV field and the NDI field belong to the same field. It can also be understood that the RV field and the NDI field are filled into the same field in the downlink control information DCI.

In a possible implementation, the first number M2 of first parameters and/or the second number M1 of second parameters use all bits of the RV field.

In a possible implementation, the first parameter of the first number M2 and/or the second parameter of the second number M1 use reserved bits in the downlink control information DCI.

In a possible implementation, the first parameters of the first quantity M2 and/or several of the second parameters of the second quantity M1 use all bits of the RV field, and the remaining several of the second parameters of the second quantity M1 The reserved bits in the downlink control information DCI are used.

In a possible implementation manner, the second parameters of the second quantity M1 and/or several of the first parameters of the first quantity M2 use all bits of the RV field, and the remaining several first parameters of the first quantity M2 The reserved bits in the downlink control information DCI are used.

In a possible implementation manner, the first parameters of the first quantity M2 use the first several bits in the RV field, and the second parameters of the second quantity M1 use the last several bits of the RV field.

In a possible implementation manner, the first several bits in the RV field are used for the second parameter of the second quantity M1, and the last several bits in the RV field are used for the first parameter of the first quantity M2.

In a possible implementation manner, the first field is filled continuously with the first parameter of the first quantity M2 and/or the second parameter of the second quantity M1. The continuous filling method depends on the indication of the downlink control information DCI configured by the base station.

In a possible implementation manner, the first parameter of the first quantity M2 and the second parameter of the second quantity M1 are non-consecutively cross-filled in the first field. The discontinuous cross-filling manner depends on the indication of the downlink control information DCI configured by the base station.

In a possible implementation manner, the first several bits in the NDI field are reserved bits for filling the first parameter and/or the second parameter. The number of reserved bits in the NDI field is determined according to the number of actually scheduled transport blocks.

In a possible implementation manner, the last several bits in the NDI field are reserved bits for filling the first parameter and/or the second parameter. The number of reserved bits in the NDI field is determined according to the number of actually scheduled transport blocks.

Of course, the filling position of each functional field in the first field, the filling position of each parameter in the first field, and the filling position of reserved bits in the first field are not limited to those described in the foregoing embodiments, and other Any suitable combination does not constitute a specific limitation here.

Through the cooperation of the above-mentioned embodiments, the reserved bits in the downlink control information DCI, for example, the reserved bits in the NDI field, can be fully utilized, and the channels of different transport blocks can be realized without increasing the downlink control information DCI overhead. The length of the information used in the coding redundancy version indication is dynamically adjustable, which not only helps to improve resource utilization, but also improves reception performance under the premise of promoting the combining gain of data HARQ retransmission.

Fig. 11a-Fig. 11g exemplarily show schematic diagrams of the first field including the first parameter of the first quantity M2 and/or the second parameter of the second quantity M1 in an application scenario. 11a-11g, the process of determining the first quantity M2 and/or the second quantity M1 in each application scenario will be illustrated with an example:

As shown in Figure 11a, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is the RV field used to indicate the channel coding redundancy version RV. Both the first parameter and the second parameter fill all bits of the first field consecutively. The second parameter uses the first several bits of the first field, and the first parameter uses the last several bits of the first field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=8, the number of bits of the RV field is 8 bits, and correspondingly, the length RV_bit_total of the first field is determined to be 8 bits.

It is assumed that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI=5.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N-M=8-5=3.

The second number M1=the number M of the actually scheduled transport blocks TB-the first number M2=M-(N-M)=2M-N=5-3=2.

Therefore, the first parameters of the first number M2 are determined as: 10, 00, 11; the second parameters of the second number M1 are determined as: 0, 1. 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, 1 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is 1, 10 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 2, 00 indicates that the channel coding redundancy version RV of the transport block TB- PDS4 0, 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS5 is 3.

Correspondingly, the first field containing the first parameter and the second parameter is determined as: 01100011.

As shown in FIG. 11b, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is the RV field. Both the first parameter and the second parameter fill all bits of the first field consecutively. The first parameter uses the first several bits of the first field, and the second parameter uses the last several bits of the first field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=4, the number of bits of the RV field is 4 bits. Correspondingly, it is determined that the length of the first field RV_bit_total is 4 bits.

It is assumed that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI=3.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N-M=4-3=1.

The second number M1=the number of actually scheduled transport blocks TB M-the first number M2=M-(N-M)=2M-N=3-1=2.

Therefore, the first parameter of the first number M2 is determined as: 01; the second parameter of the second number M1 is determined as: 1, 0. 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 1, and 1 indicates that The channel coding redundancy version RV of the transport block TB-PDS2 is 1, and 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0.

Correspondingly, the first field containing the first parameter and the second parameter is determined as: 0110.

As shown in Figure 11c, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field includes the RV field and reserved bits in the NDI field; the RV field and the NDI field belong to two different fields. Both the first parameter and the second parameter fill all bits of the first field consecutively. The second parameters of the second quantity M1 use the first several bits in the RV field, the remaining first parameters of the first quantity M2 use the last several bits of the RV field; the remaining first parameters of the first quantity M2 use NDI reserved bits in the field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=8, and assuming that the number of actually scheduled transport blocks TB indicated by the downlink control information DCI M=6, then the number of bits in the RV field is 8 bits, reserved bits in the NDI field=N-M=8-6=2 bits, correspondingly, determine the length of the first field RV_bit_total=N+(N-M)=8+2=10 bits.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N+(N-M)-M=2N-2M=10-6=4.

The second number M1=the number M of the actually scheduled transport blocks TB-the first number M2=M-(N-M)=2M-N=6-4=2.

Therefore, the first parameters of the first number M2 are determined as: 10, 00, 11, 01; the second parameters of the second number M1 are determined as: 0, 1. 0 indicates the channel coding redundancy version of the transport block TB-PDS1 RV is 0, 1 indicates the channel coding redundancy version of transport block TB-PDS2 RV is 1, 10 indicates the channel coding redundancy version RV of transport block TB-PDS3 is 2, 00 indicates the channel coding redundancy of transport block TB-PDS4 The version RV is 0, 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS5 is 3, and 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS6 is 2.

Correspondingly, the RV field containing 3 first parameters and 2 second parameters is determined as: 01100011.

The NDI field containing the new data indication of 6 transport blocks TB and 1 first parameter is determined as: 00101001.

As shown in FIG. 11d, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field includes the RV field and reserved bits in the NDI field; the RV field and the NDI field belong to two different fields. Both the first parameter and the second parameter fill all bits of the first field consecutively. The first parameter of the first quantity M2 uses all the bits in the RV field; the second parameter of the second quantity M1 uses the reserved bits in the NDI field; the new data indication for indicating the transport block TB uses the first several bits of the NDI field, Reserved bits use the last few bits of the NDI field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=4, and assuming that the number of actually scheduled transport blocks TB indicated by the downlink control information DCI M=3, then the number of bits in the RV field is 4 bits, reserved bits in the NDI field=N-M=4-3=1 bits, correspondingly, determine the length of the first field RV_bit_total=N+(N-M)=4+1=5 bits.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N+(N-M)-M=2N-2M=5-3=2.

The second number M1=the number M of actually scheduled transport blocks TB-the first number M2=M-(N-M)=2M-N=3-2=1.

Therefore, the first parameter of the first number M2 is determined as: 00, 10; the second parameter of the second number M1 is determined as: 0. 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, and 10 indicates that The channel coding redundancy version RV of the transport block TB-PDS2 is 2, and 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0.

Correspondingly, the RV field containing 2 first parameters is determined as: 0010.

The NDI field containing the new data indication of 3 transport blocks TB and 1 second parameter is determined as: 0010.

As shown in FIG. 11e, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field includes the RV field and the reserved bits in the NDI field; the RV field and the NDI field belong to the same field; the NDI field uses the first several bits of the same field, and the RV field uses the last bits of the same field. several. Both the first parameter and the second parameter fill all bits of the first field consecutively. The first parameter of the first quantity M2 uses all the bits in the RV field; the second parameter of the second quantity M1 uses the reserved bits in the NDI field; the new data indication for indicating the transport block TB uses the first several bits of the NDI field, Reserved bits use the last few bits of the NDI field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=4, and assuming that the number of actually scheduled transport blocks TB indicated by the downlink control information DCI M=3, then the number of bits in the RV field is 4 bits, reserved bits in the NDI field=N-M=4-3=1 bits, correspondingly, determine the length of the first field RV_bit_total=N+(N-M)=bits.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N+(N-M)-M=2N-2M=5-3=2.

The second number M1=the number M of the actually scheduled transport blocks TB-the first number M2=M-(N-M)=2M-N=3-2=1.

Therefore, the first parameter of the first number M2 is determined as: 00, 11; the second parameter of the second number M1 is determined as: 0. 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 0, and 00 indicates that The channel coding redundancy version RV of the transport block TB-PDS2 is 0, and 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 3.

Correspondingly, the RV field containing 2 first parameters is determined as: 0011.

The NDI field containing the new data indication of 3 transport blocks TB and 1 second parameter is determined as: 0110.

The above application scenarios are all applicable to the continuous filling method, and another application scenario suitable for the discontinuous cross filling method is listed below. The continuous padding mode and the discontinuous cross-padding mode depend on the indication of the downlink control information DCI configured by the base station.

As shown in FIG. 11f, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is the RV field. The first parameter and the second parameter non-consecutively cross-fill all bits of the first field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=4, the number of bits of the RV field is 4 bits. Correspondingly, it is determined that the length of the first field RV_bit_total is 4 bits.

It is assumed that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI=3.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N-M=4-3=1.

The second number M1=the number of actually scheduled transport blocks TB M-the first number M2=M-(N-M)=2M-N=3-1=2.

Therefore, the first parameter of the first number M2 is determined as: 01; the second parameter of the second number M1 is determined as: 1, 0. 1 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 1, and 01 indicates that The channel coding redundancy version RV of the transport block TB-PDS2 is 2, and 0 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0.

Correspondingly, based on the discontinuous cross-filling manner of the first parameter and the second parameter, the first field including the first parameter and the second parameter is determined as: 1010.

Each of the above application scenarios is applicable to the single-codeword scheduling mode, and another application scenario applicable to the multi-codeword scheduling mode is listed below. The single-codeword scheduling method and the multi-codeword scheduling method depend on the indication of the downlink control information DCI configured by the base station.

As shown in FIG. 11g, the first parameter indicates the channel coding redundancy version RV of the transport block TB using 2 bits, and the second parameter indicates the channel coding redundancy version RV of the transport block TB using 1 bit. The first field is the RV field. Both the first parameter and the second parameter fill all bits of the first field consecutively. The second parameter uses the first several bits of the first field, and the first parameter uses the last several bits of the first field.

Assuming that the maximum number of scheduled transport blocks TB allowed by one downlink control information DCI is N=4, the number of bits of the RV field is 4*2=8 bits. Correspondingly, it is determined that the length of the first field RV_bit_total is 8 bits.

Assuming that the number M of actually scheduled transport blocks TB indicated by the downlink control information DCI=2, based on the multi-codeword scheduling method, in the following calculation process, the number of actually scheduled transport blocks TB M=2*2= 4.

Then, the first number M2=the length of the first field RV_bit_total-the number of actually scheduled transport blocks TB M=RV_bit_total-M=N-M=8-4=4.

The second number M1=the number M of actually scheduled transport blocks TB-the first number M2=M-(N-M)=2M-N=4-4=0.

Therefore, the first parameters of the first number M2 are determined as: 01, 10, 00, 11. 01 indicates that the channel coding redundancy version RV of the transport block TB-PDS1 is 1, and 10 indicates that the channel coding redundancy version RV of the transport block TB-PDS2 is The remaining version RV is 2, 00 indicates that the channel coding redundancy version RV of the transport block TB-PDS3 is 0, and 11 indicates that the channel coding redundancy version RV of the transport block TB-PDS4 is 3.

Correspondingly, the first field containing the first parameter is determined to be: 01100011.

In the above application scenarios, the filling position of each functional field in the first field, the filling position of each parameter in the first field, and the filling position of reserved bits in the first field are not limited to those described in the above application scenarios. , and any other suitable combination is also allowed, which does not constitute a specific limitation here.

Referring to FIG. 12 , an embodiment of the present application provides a data transmission method, and the method can be executed by the terminal 110 in the implementation environment shown in FIG. 1 .

As shown in Figure 12, the method may include the following steps:

Step 62, determining the first number and the second number according to the length of the first field, to perform data transmission based on the first number and/or the second number.

The first field is used to indicate the channel coding redundancy version RV of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version RV, and the second number is used for indicating the number of transport blocks of the channel coding redundancy version RV using a second length; the first length is different from the second length.

Regarding the determination of the first number M2 and the second number M1, the same is true at the base station side, and reference may be made to the process of the base station side determining the first number M2 and the second number M1, which will not be repeated here.

Through the above process, through the determination of the first number M2 and/or the second number M1, the combining gain of data HARQ retransmission can be promoted when data is received.

The following are device embodiments of the present application, which can be used to execute the data transmission method involved in the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the data transmission method involved in the present application.

Referring to FIG. 13, an embodiment of the present application provides a data transmission apparatus 900, which is applied to a base station.

The data transmission device 900 includes but is not limited to: a quantity determination module 920 .

The quantity determination module 920 is configured to determine the first quantity and the second quantity according to the length of the first field, so as to perform data transmission based on the first quantity and/or the second quantity.

The first field is used to indicate the channel coding redundancy version RV of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version RV, and the second number is used for indicating the number of transport blocks of the channel coding redundancy version RV using a second length; the first length is different from the second length.

Referring to FIG. 14, an embodiment of the present application provides a data transmission apparatus 1000, which is applied to a terminal.

The data transmission apparatus 1000 includes but is not limited to: a quantity determination module 1020 .

The quantity determination module 1020 is configured to determine the first quantity and the second quantity according to the length of the first field, so as to perform data transmission based on the first quantity and/or the second quantity.

The first field is used to indicate the channel coding redundancy version RV of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version RV, and the second number is used for indicating the number of transport blocks of the channel coding redundancy version RV using a second length; the first length is different from the second length.

It should be noted that the division of units and/or modules in the embodiments of the present application is illustrative, and is only a logical function division, and other division methods may be used in actual implementation. In addition, each functional unit and/or module in each embodiment of the present application may be integrated into one processing unit and/or module, or each unit and/or module may exist physically alone, or two or more Units and/or modules are integrated in one unit and/or module. The above-mentioned integrated units and/or modules may be implemented in the form of hardware, or may be implemented in the form of software functional units and/or modules.

If the integrated units and/or modules are implemented in the form of software functional units and/or modules and sold or used as independent products, they may be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

In addition, the data transmission device and data transmission method provided by the above embodiments are based on the same application concept. Since the method and the device solve problems in similar principles, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

Therefore, by determining the first quantity M2 and/or the second quantity M1, the number of channel coding redundancy versions RV is increased, and as the number of channel coding redundancy versions RV increases, the combined gain of data HARQ retransmission is greater. , thereby solving the problem of large loss of combining gain in data HARQ retransmission existing in the related art.

Fig. 15 shows a structural block diagram of a base station according to an exemplary embodiment. The base station is suitable for the base station 130 in the implementation environment shown in FIG. 1 .

As shown in FIG. 15 , the base station 1100 at least includes: a processor 1110 , a memory 1120 and a transceiver 1130 .

The transceiver 1130 is used to receive and transmit data under the control of the processor 1110 .

In FIG. 15 , the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1110 and various circuits of memory represented by memory 1120 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1130 may be a number of elements, including transmitters and receivers, providing units and/or modules for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, etc. medium.

The processor 1110 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1110 in performing operations.

Optionally, the processor 1110 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device ( Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture. The processor is configured to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by invoking the computer program stored in the memory. The processor and memory may also be physically separated.

Fig. 16 shows a structural block diagram of a terminal according to an exemplary embodiment. The terminal is suitable for the terminal 110 of the implementation environment shown in FIG. 1 .

As shown in FIG. 16 , the terminal 1300 at least includes: a processor 1310 , a memory 1320 and a transceiver 1330 .

The transceiver 1330 is used to receive and transmit data under the control of the processor 1310 .

In FIG. 16 , the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1310 and various circuits of memory represented by memory 1320 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1330 may be a number of elements, including transmitters and receivers, providing units and/or modules for communicating with various other devices over transmission media including wireless channels, wired Channels, optical cables and other transmission media. For different user equipments, the user interface 1340 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

Optionally, the processor 1310 can be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device ( Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture. The processor is configured to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by invoking the computer program stored in the memory. The processor and memory may also be physically separated.

It should be noted here that the above-mentioned apparatuses provided in the embodiments of the present application can realize all the method steps realized by the above-mentioned method embodiments, and can achieve the same technical effect, and the description of the method embodiments in this embodiment and the method embodiments will not be discussed here. The same parts and beneficial effects will be described in detail.

In addition, an embodiment of the present application provides a storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the data transmission methods in the foregoing embodiments are implemented. The storage medium can be any available medium or data storage device that can be accessed by the processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, etc.) , HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state disk (SSD)), etc.

An embodiment of the present application provides a program product, for example, the program product is an FPGA chip or a DSP chip, and the program product includes executable instructions, and the executable instructions are stored in a storage medium. The processor reads the executable instructions from the storage medium, so that when the executable instructions are executed by the processor, the data transmission methods in the above embodiments are implemented.

Compared with the related art, by determining the first quantity M2 and/or the second quantity M1, the number of channel coding redundancy versions RV is increased, and as the number of channel coding redundancy versions RV increases, the data HARQ retransmission is combined. The larger the gain, the problem that the combined gain loss of the data HARQ retransmission existing in the related art is solved is relatively large.

At the same time, in response to the determination of the first number M2, the second number M1 is determined, so that the information length indicated by the channel coding redundancy versions used in different transport blocks can be dynamically adjusted, which can increase the combining gain of the data HARQ retransmission. , and will not generate excessive overhead in the downlink control information DCI, which is beneficial to the improvement of reception performance.

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

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

These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means including the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.

These processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

It should be understood that although the various steps in the flowchart of the accompanying drawings are sequentially shown in the order indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order and may be performed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution sequence is also It does not have to be performed sequentially, but may be performed alternately or alternately with other steps or at least a portion of sub-steps or stages of other steps.

The above are only part of the embodiments of the present application. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can also be made. It should be regarded as the protection scope of this application.

Claims (21)

1. A method of data transmission, comprising:

   according to the length of the first field, determining a first quantity and a second quantity to perform data transmission based on the first quantity and/or the second quantity;

   The first field is used to indicate the channel coding redundancy version of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version, and the second number is used for for indicating the number of transport blocks of the channel coding redundancy version using a second length; the first length is different from the second length.
2. The method of claim 1, wherein the determining the first quantity and the second quantity according to the length of the first field comprises:

   determining the length of the first field and the number of actually scheduled transport blocks;

   determining the first number according to the length of the first field and the number of actually scheduled transport blocks;

   The second number is determined according to the first number and the number of actually scheduled transport blocks.
3. The method of claim 2, wherein the determining the first number according to the length of the first field and the number of actually scheduled transport blocks comprises:

   determining a first difference between the length of the first field and the number of actually scheduled transport blocks;

   The first number is determined according to the relationship between the first difference and the number of actually scheduled transport blocks.
4. The method of claim 3, wherein the determining the first number according to the relationship between the first difference and the number of actually scheduled transmission blocks comprises:

   If the first difference is greater than the number of actually scheduled transport blocks, the number of actually scheduled transport blocks is used as the first number;

   If the first difference is less than or equal to the number of actually scheduled transport blocks, the first difference is used as the first number.
5. The method of claim 2, wherein the determining the second number according to the first number and the number of actually scheduled transport blocks comprises:

   determining a second difference between the number of actually scheduled transport blocks and the first number;

   The second difference is used as the second quantity.
6. The method of claim 1, wherein the first number of parameters indicating a channel coding redundancy version, and/or the second number of parameters indicating a channel coding redundancy version continuously fills the first field.
7. The method of claim 1, wherein the first number of parameters indicative of a channel coding redundancy version, and/or the second number of parameters indicative of a channel coding redundancy version non-consecutively cross-fill all the first field.
8. The method of any one of claims 1 to 7, wherein the first field is included in downlink control information.
9. The method of claim 8, wherein the first field comprises a channel coding redundancy version field for indicating a channel coding redundancy version of a transport block, and/or a reservation in the downlink control information bit.
10. The method of claim 9, wherein the reserved bits in the downlink control information include at least reserved bits in a new data indication field for indicating new data.
11. The method of claim 10, wherein the number of reserved bits in the new data indication field is determined according to the number of actually scheduled transmission blocks.
12. A communication device, comprising: a memory, a transceiver, and a processor;

    wherein the memory is configured to store a computer program; the transceiver is configured to transmit and receive data under the control of the processor; the processor is configured to read the computer program in the memory and perform the following steps :

    according to the length of the first field, determining a first quantity and a second quantity to perform data transmission based on the first quantity and/or the second quantity;

    The first field is used to indicate the channel coding redundancy version of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version, and the second number is used for for indicating the number of transport blocks of the channel coding redundancy version using a second length; the first length is different from the second length.
13. The communication device of claim 12, wherein the processor is further configured to perform the steps of:

    determining the length of the first field and the number of actually scheduled transport blocks;

    determining the first number according to the length of the first field and the number of actually scheduled transport blocks;

    The second number is determined according to the first number and the number of actually scheduled transport blocks.
14. The communication device of claim 13, wherein the processor is further configured to perform the steps of:

    determining a first difference between the length of the first field and the number of actually scheduled transport blocks;

    The first number is determined according to the relationship between the first difference and the number of actually scheduled transport blocks.
15. The communication device of claim 14, wherein the processor is further configured to perform the steps of:

    If the first difference is greater than the number of actually scheduled transport blocks, the number of actually scheduled transport blocks is used as the first number;

    If the first difference is less than or equal to the number of actually scheduled transport blocks, the first difference is used as the first number.
16. The communication device of claim 13, wherein the processor is further configured to perform the steps of:

    determining a second difference between the number of actually scheduled transport blocks and the first number;

    The second difference is used as the second quantity.
17. A data transmission device, comprising:

    a quantity determination module configured to determine a first quantity and a second quantity according to the length of the first field, to perform data transmission based on the first quantity and/or the second quantity;

    The first field is used to indicate the channel coding redundancy version of the transport block; the first number is used to indicate the number of transport blocks that use the first length to indicate the channel coding redundancy version, and the second number is used for for indicating the number of transport blocks of the channel coding redundancy version using a second length; the first length is different from the second length.
18. The apparatus of claim 17, wherein the quantity determining module comprises:

    a transport block number determination unit, configured to determine the length of the first field and the number of actually scheduled transport blocks;

    a first quantity determining unit, configured to determine the first quantity according to the length of the first field and the number of actually scheduled transport blocks;

    The second quantity determining unit is configured to determine the second quantity according to the first quantity and the number of actually scheduled transmission blocks.
19. The apparatus of claim 18, wherein the first quantity determination unit comprises:

    a first difference determination subunit, configured to determine the first difference between the length of the first field and the number of actually scheduled transport blocks;

    The first processing subunit is configured to determine the first number according to the relationship between the first difference and the number of actually scheduled transmission blocks.
20. The apparatus of claim 19, wherein the first processing subunit comprises:

    a first response subunit, configured to use the number of actually scheduled transport blocks as the first number if the first difference is greater than the number of actually scheduled transport blocks;

    The second response subunit is configured to use the first difference as the first number if the first difference is less than or equal to the number of actually scheduled transmission blocks.
21. A storage medium having a computer program stored thereon, the computer program implementing the data transmission method according to any one of claims 1 to 11 when the computer program is executed by a processor.

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