Joint transmission method and apparatus, and device

Abstract

The present application belongs to the technical field of communications. Disclosed are a joint transmission method and apparatus, and a device. The joint transmission method in the embodiments of the present application comprises: a first device performing coding and modulation on M data groups to obtain modulated data, wherein M is an integer greater than 1, and during modulation, coded bits of the M data groups are mapped to the same modulation symbol, and within the same modulation symbol, the coded bits of the M data groups are respectively mapped to corresponding modulation bit positions associated with the coded bits; and the first device sending the modulated data.

Description

Joint transmission methods, apparatus and equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411863258.4, filed on December 17, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a joint transmission method, apparatus, and device. Background Technology

[0004] In related technologies, modulation is performed at the data group (e.g., transport block) granularity during transmission, meaning that only one data group's coded bits exist for the same modulation symbol, resulting in relatively poor data transmission performance. Summary of the Invention

[0005] This application provides a joint transmission method, apparatus, and device that can solve the problem of poor data transmission performance.

[0006] Firstly, a joint transmission method is provided, including:

[0007] The first device encodes and modulates M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits;

[0008] The first device sends the modulated data.

[0009] Secondly, a combined transmission device is provided, comprising:

[0010] The processing module is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits.

[0011] A transmitting module is used to transmit the modulated data.

[0012] Thirdly, a joint transmission device is provided, the device being configured to perform the steps of the method described in the first aspect.

[0013] Fourthly, an apparatus is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the joint transmission method provided in the embodiments of this application.

[0014] Fifthly, a device is provided, including a processor and a communication interface, wherein the processor is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits; the communication interface is used to transmit the modulated data.

[0015] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the joint transmission method provided in the embodiments of this application.

[0016] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits; the communication interface is used to transmit the modulated data.

[0017] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the joint transmission method provided in the embodiments of this application.

[0018] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits; the communication interface is used to transmit the modulated data.

[0019] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the joint transmission method provided in the embodiments of this application.

[0020] Eleventhly, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the steps of the joint transmission method provided in the embodiments of this application.

[0021] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the joint transmission method provided in the embodiments of this application.

[0022] In this embodiment, a first device encodes and modulates M data groups to obtain modulated data, where M is an integer greater than 1. During modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and within the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their associated modulation bits. The first device then transmits the modulated data. This allows the transmission of encoded bits from multiple data groups within the same modulation symbol, thereby improving data transmission performance. Attached Figure Description

[0023] Figure 1 is a schematic diagram of a system provided in an embodiment of this application;

[0024] Figure 2 is a flowchart of a group coding method provided in an embodiment of this application;

[0025] Figure 3 is a schematic diagram of a group coding method provided in an embodiment of this application;

[0026] Figure 4 is a schematic diagram of the coding performance provided in an embodiment of this application;

[0027] Figure 5 is a schematic diagram of another encoding performance provided by an embodiment of this application;

[0028] Figure 6 is a schematic diagram of another encoding performance provided by an embodiment of this application;

[0029] Figure 7 is a schematic diagram of another encoding performance provided by an embodiment of this application;

[0030] Figure 8 is a flowchart of a joint transmission method provided in an embodiment of this application;

[0031] Figure 9 is a schematic diagram of an interlacing provided in an embodiment of this application;

[0032] Figure 10 is a schematic diagram of another interlacing provided in an embodiment of this application;

[0033] Figure 11 is a schematic diagram of data transmission provided in an embodiment of this application;

[0034] Figure 12 is a schematic diagram of data performance provided in an embodiment of this application;

[0035] Figure 13 is a structural diagram of a combined transmission device provided in an embodiment of this application;

[0036] Figure 14 is a structural diagram of a communication device provided in an embodiment of this application;

[0037] Figure 15 is a structural diagram of a terminal provided in an embodiment of this application;

[0038] Figure 16 is a structural diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0042] It is worth noting that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems.

[0043] The terms "system" and "network" used in the embodiments of this application are often used interchangeably, and the described technologies can be used with respect to the systems and radio technologies mentioned above, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation 6G communication system.

[0044] Figure 1 shows a schematic diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12.

[0045] Terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, drone (also known as uncrewed aerial vehicle, UAV), electric vertical take-off and landing (eVTOL) aircraft, helicopter, traditional fixed-wing aircraft, vehicle user equipment (VUE), shipborne equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in the embodiments of this application.

[0046] Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, radio access network unit, or satellite. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc. The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0047] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. The core network functions include: BSF (Block Network Function), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), and Network Data Analytics Function (NWDAF). It should be noted that this application embodiment only uses core network equipment in the NR system as an example and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will still be within the scope of protection of this application.

[0048] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0049] The block coding scheme (also known as the coding modulation optimization scheme) in this application embodiment can be as shown in Figure 2, including the following steps:

[0050] Step 201: The first device groups TB into N information bit groups, where N is an integer greater than 1;

[0051] Step 202: The first device encodes the N information bit groups using N code rates respectively to obtain the encoded output code blocks of the N information bit groups, wherein the N code rates correspond one-to-one with the N information bit groups.

[0052] Optionally, the value of N is a fixed value; or,

[0053] The value of N is related to the modulation order.

[0054] Optionally, there are different bitrates among the N bitrates, and the average of the N bitrates is equal to the bitrate of the TB.

[0055] Optionally, the N bit rates are determined based on at least one of the following:

[0056] The protocol includes the following: Modulation and coding scheme (MCS) table, MCS level, preset rules, signaling indication, and code rate of the information bit set.

[0057] The specific process of the block coding scheme (also known as the coding-modulation optimization scheme) is given below, as shown in Figure 3, including:

[0058] Step 1: Divide the TB to be transmitted into N information bit groups (or simply groups).

[0059] The set of information bits to be transmitted refers to the TB after adding TB cyclic redundancy check (CRC), which is divided into N information bit groups;

[0060] Alternatively, the TB without TB CRC can be grouped first, and then CRC can be added to the information bit set of each group.

[0061] The number of groups is fixed, and can be N=2; or the number of groups is proportional to the modulation order Q. m Correlation, for example, for 16-cycle redundancy check (CRC) (Q m =4), the number of groups is 2; for 64QAM(Q m =6), the number of groups is 2 or 3; for 256QAM(Q m =8), the number of groups is 2 or 4; for 1024QAM(Q m =10), the number of groups is 2 or 5.

[0062] The number of information bits corresponding to different information bit groups is determined based on at least one of the following: the number of resource units, the number of transmission layers, the modulation order, the number of blocks, and the block code rate.

[0063] The code rate R of each information bit group n (n=0,1,2,…,N-1) are the same or different, and the code rate R of each information bit group is determined. n For n = 0, 1, 2, ..., N-1, the code rate of each information bit group satisfies (or ), where R is the overall data transmission rate, i.e., the rate of the information bit set.

[0064] Step 2: Divide the information bits corresponding to the N information bit groups into code blocks.

[0065] In this case, the number of code blocks obtained after code block segmentation is the same for different information bit groups, that is, C code blocks are obtained after code block segmentation of the information bits corresponding to each information bit group; specifically, code block segmentation can be performed according to the information bits corresponding to the information bit group with the highest code rate and the number of code blocks C is determined, and the information bits corresponding to other information bit groups are segmented according to the number of code blocks C.

[0066] Step 3: Encode different information bit groups according to their respective code rates, such as Low Density Parity Check Code (LDPC) encoding or Polar encoding.

[0067] Optionally, CRC is added to the code blocks corresponding to different information bit groups, and they are encoded according to their respective code rates, so that each information bit group corresponds to C encoded output code blocks.

[0068] Step 4: Rate matching of the encoded output code blocks corresponding to different information bit groups.

[0069] Optionally, the total length of the rate-matched output bit sequence corresponding to different information bit groups (i.e., the sum of the lengths of the C rate-matched output code blocks) is equal;

[0070] Optionally, the total length of the rate-matched output bit sequence corresponding to different information bit groups is determined based on at least one of the following: the number of resource units, the number of transmission layers, the modulation order, and the number of groups.

[0071] Step 5: Jointly interleave the rate-matched output code blocks corresponding to different information bit groups using a row-column interleaver. The interleaver depth (number of rows) is equal to the modulation order Q. m The number of interleaver columns is in This represents the sum of the rate-matched output code block lengths of the N information bit groups used for joint interleaving.

[0072] The rate-matched output code blocks of the N information bit groups are concatenated and fed into an interleaver for joint interleaving. The N rate-matched output code blocks correspond to the N information bit groups respectively. The rate-matched output code blocks of the information bit groups with higher code rates are fed into the interleaver first, and the rate-matched output code blocks of the information bit groups with lower code rates are fed into the interleaver later.

[0073] Alternatively, the system bits in the output code block can be sent to the interleaver first, according to the code rate from high to low, by rate matching of each information bit group. Then, the parity bits in the output code block can be sent to the interleaver according to the code rate from high to low.

[0074] Step 6: Concatenate the interleaved data, i.e., concatenate code block groups to obtain the modulation input bits.

[0075] Step 7: Perform QAM modulation on the modulated input bit sequence to obtain modulation symbols and send them.

[0076] Taking 256QAM modulation as an example, the overall effect of the scheme is explained. At this time, the modulation order Q m =8, meaning each modulation symbol contains 8 bits. The reliability of these 8 bits can be divided into 4 levels, with every two bits having the same reliability. The information bits to be transmitted are divided into 4 information bit groups based on the modulation order. During QAM modulation, the bit set corresponding to each information bit group is mapped to 2 bits with the same reliability. Assuming each information bit group uses the same code rate, the error rate of the code blocks corresponding to each information bit group is statistically analyzed. The results are shown in Figure 4, where 401, 402, 403, and 404 represent the performance curves corresponding to the 4 information bit groups. It can be seen that the bit sets corresponding to different groups are mapped to bits with different reliability during modulation, resulting in significant differences in their block error rate performance.

[0077] To simplify the encoding and decoding process, the information bits to be transmitted can be divided into two information bit groups. The bit set corresponding to one information bit group is mapped to the four bits with lower reliability during adjustment, while the bit set corresponding to the other information bit group is placed into the four bits with higher reliability during QAM modulation.

[0078] When the fixed number of blocks is 2, assuming that each information bit block uses the same code rate, the error rate of the code block corresponding to each information bit block is statistically analyzed, and the results are shown in Figure 5. In this figure, 501 and 502 represent the performance curves corresponding to the two information bit blocks, respectively. It can be seen that the bit sets corresponding to different blocks are mapped to bits with different reliability during modulation. Although there is no one-to-one mapping between each block and bits with different reliability as when there are 4 blocks, the performance of the block error rate still has a large difference.

[0079] Therefore, in practical processing, different modulation orders are grouped in a unified way, that is, divided into 2 groups and mapped to Q with higher overall reliability respectively. m / 2 bits and Q with low overall reliability m The 2 bits can improve data transmission performance by allocating an appropriate code rate to the 2 information bit groups, and greatly simplify the encoding and decoding process.

[0080] When LDPC encoding different groups, the encoding can be based on the code rates R0, R1, ..., R of each group. N-1 The number of information bits corresponding to each group, B0, B1, ..., B N-1 Alternatively, the length of the code block after segmentation (including CRC length) corresponding to each group determines the base graph (BG) and boosting factor of the LDPC encoding for different groups. Alternatively, different groups can use the same LDPC encoding base map (BG) and boost factor (Z). This means that the same parity-check matrix (H) is used when LDPC encoding the information bit sets corresponding to different groups. In this case, the input code block length, output code block length, and code rate are the same for different groups. Specifically, the LDPC encoding base map (BG) and boost factor are determined based on the information bit set corresponding to the highest information bit group. This includes: determining the encoding base map (BG) based on the number of information bits (i.e., bit sequence length) or code rate corresponding to the highest information bit group; and determining the boost factor (Z) based on the code block length association parameter K0′ after the code block segmentation corresponding to the highest information bit group. c This makes the encoder input bit sequence length K = K b ·Z c ≥K′, where the code block length associated parameter after code block segmentation B′0 represents the sum of the lengths of all code blocks after the set of information bits corresponding to block 0 is divided into code blocks and CB CRC is added, i.e., B′0 = B0 + C·N CB-CRC At this point, the sequence length of each information bit group input to the encoder during LDPC encoding is fixed. Different information bit groups adapt to the corresponding encoding input bit number requirements by controlling the number of padding bits.

[0081] Based on the channel capacity of different bit positions of the modulation symbols, the code rate allocation results were calculated by taking the modulation and coding scheme (MCS) levels of 64QAM and 256QAM as examples, as shown in Table 1 below.

[0082] Table 1:

[0083] Based on the above rate allocation scheme, the data transmission performance of the system using the LDPC coding and modulation optimization scheme is simulated and evaluated below, with the 5G NR LDPC coding scheme as the comparison scheme. The simulation uses a Clustered Delay Line A (CDL-A) fading channel, with an antenna configuration of 1 transmit and 2 receive, and 260 resource blocks (RBs) configured for data transmission. Both schemes use the same LDPC decoding algorithm and the maximum number of decoding iterations. Figure 6 shows the performance evaluation results of the proposed LDPC coding and modulation optimization scheme (MC-LDPC) and the comparative scheme (5G-LDPC). Specifically, 601 represents the performance evaluation result of the 5G scheme with MCS index 16, 602 represents the performance evaluation result of the LDPC coding and modulation optimization scheme with MCS index 16, 603 represents the performance evaluation result of the 5G scheme with MCS index 17, 604 represents the performance evaluation result of the LDPC coding and modulation optimization scheme with MCS index 17, 605 represents the performance evaluation result of the 5G scheme with MCS index 26, 606 represents the performance evaluation result of the LDPC coding and modulation optimization scheme with MCS index 26, 607 represents the performance evaluation result of the 5G scheme with MCS index 27, and 608 represents the performance evaluation result of the LDPC coding and modulation optimization scheme with MCS index 27. It can be seen that for different MCS levels, i.e., different modulation orders and target code rates, the LDPC coding and modulation scheme in this paper shows a certain performance improvement compared to the NR baseline.

[0084] When simplified grouping is not used, taking the same 64QAM and 256QAM MCS levels as Table 1 as examples, the code rate allocation results of m / 2 information bit groups are shown in Table 2.

[0085] Table 2:

[0086] Based on the above code rate allocation scheme, the following describes two LDPC coding and modulation optimization schemes: one using simplified grouping and the other using sub-channel capacity level grouping. The simulation uses a CDL-A fading channel with an antenna configuration of 1 transmit and 2 receive, and 260 resource blocks are allocated for data transmission. Both schemes use the same LDPC decoding algorithm and the maximum number of decoding iterations. Figure 7 shows the performance evaluation results of the simplified grouping LDPC coding and modulation optimization scheme (MC-LDPC) and the sub-channel capacity level grouping LDPC coding and modulation optimization scheme (MC-LDPC-II). In Figure 7, 701 represents the performance evaluation result of the MC-LDPC scheme with MCS index 16, 702 represents the performance evaluation result of the MC-LDPC-II scheme with MCS index 16, 703 represents the performance evaluation result of the MC-LDPC scheme with MCS index 17, and 704 represents the performance evaluation result of the MC-LDPC-II scheme with MCS index 17. The performance evaluation results are as follows: 705 represents the performance evaluation result of the MC-LDPC scheme with MCS index 26, 706 represents the performance evaluation result of the MC-LDPC-II scheme with MCS index 26, 707 represents the performance evaluation result of the MC-LDPC scheme with MCS index 27, and 708 represents the performance evaluation result of the MC-LDPC-II scheme with MCS index 27. It can be seen that the performance difference between the two methods is small, and for the two MCS levels with higher code rates, MCS17 and MCS27, the simplified grouping LDPC coding and modulation optimization scheme performs better. Therefore, adopting the simplified grouping method can not only reduce resource overhead and processing complexity, but also ensure good data transmission performance.

[0087] The following description, in conjunction with the accompanying drawings, details a joint transmission method, apparatus, and device provided in this application through some embodiments and application scenarios.

[0088] Please refer to Figure 8, which is a flowchart of a joint transmission method provided in an embodiment of this application. As shown in Figure 8, it includes the following steps:

[0089] Step 801: The first device encodes and modulates M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits.

[0090] The first device mentioned above can be a terminal or a network-side device.

[0091] In this embodiment of the application, the aforementioned data group may include one of the following:

[0092] TB, sub-TB, Code Block Group (CBG).

[0093] This means that it can encode and modulate M TBs, M sub-TBs, or M CBGs.

[0094] The above encoding can be performed using the block coding scheme provided in the embodiments of this application, which can further improve data transmission performance. Other encoding schemes can also be used, and there is no limitation on them. Encoding can be performed using low-density parity check code (LDPC) or Polar encoding, etc.

[0095] The modulation mentioned above can be quadrature amplitude modulation (QAM) or quadrature phase shift keying (QPSK) and other modulation methods.

[0096] The coded bits of the aforementioned M data groups are the bits after the M data groups have been encoded, such as: encoded bits, or encoded and rate-matched bits, or encoded, rate-matched and interleaved bits.

[0097] In the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits. This can be understood as the modulation process including mapping the encoded bits of the M data groups to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits.

[0098] The above-mentioned mapping of the coded bits of M data groups to the same modulation symbol can be to map the coded bits of M data groups to one or more modulation symbols, each modulation symbol including the coded bits of M data groups.

[0099] The mapping of the encoded bits of the M data groups in the same modulation symbol to their respective associated modulation bits can be understood as the modulation bits associated with each data group in the modulation symbol. For example, different data groups may be associated with different modulation bits. The modulation bits associated with each data group can be pre-configured, agreed upon by a protocol, or flexibly set by the first device according to service requirements. Alternatively, in some scenarios, different data groups may be associated with the same modulation bits, for example, during retransmission, different data groups may be associated with all bits.

[0100] The first device described above encodes and modulates M data groups by first encoding and then modulating, but the encoding and modulation may also include at least one of rate matching and interleaving.

[0101] The aforementioned M data groups can be uplink data, downlink data, or data transmitted between terminals.

[0102] Step 802: The first device sends the modulation data.

[0103] The aforementioned transmission of modulated data refers to sending modulated data to a second device, which can be a network-side device or a terminal.

[0104] In this embodiment of the application, the above steps can be used to transmit the encoded bits of multiple data groups under the same modulation symbol, thereby improving data transmission performance.

[0105] As an optional implementation, the method further includes:

[0106] The first device determines the coding and modulation information of the M data groups, the coding and modulation information including at least one of the following:

[0107] MCS index for each data group;

[0108] The modulation scheme for each data group;

[0109] The modulation order of each data group;

[0110] The bit rate (also known as the encoding rate) of each data group;

[0111] The rate of each data group matches the number of output bits;

[0112] Size of each data set (e.g., TBsize);

[0113] MCS form information;

[0114] Transmit resource information.

[0115] The coding and modulation information of the M data groups can be determined by the first device based on the configuration information sent by the network-side device, or by the first device based on the configuration information obtained in advance, or by the first device determining the coding and modulation information itself.

[0116] In some implementations, the first device may determine the coding and modulation information of another part of the data group based on the coding and modulation information of a part of the data group.

[0117] The MCS index mentioned above can indicate the MCS level.

[0118] The modulation scheme can be QPSK, 16QAM, 64QAM or 256QAM. In some implementations, different data groups use the same modulation scheme.

[0119] In some implementations, different data groups use the same modulation order.

[0120] The bitrates of different data groups can be different or the same, depending on the specific circumstances.

[0121] The number of bits output by the rate matching of the above data group is the number of bits after rate matching of the data group.

[0122] The MCS table information mentioned above is used to indicate the MCS table used for each data group. The MCS table may include at least one of the following: MCS index, modulation order, code rate, and spectral efficiency.

[0123] The aforementioned transmission resource information is used to indicate the transmission resources used by the aforementioned M data groups. For example, the transmission resource information may include at least one of the following: the number of resource units and the number of transmission layers.

[0124] In some implementations, different data groups use the same transmission resource information.

[0125] It should be noted that in some implementations, some of the information in the above-mentioned coding and modulation information can be determined by another part of the information. For example, the size of the data group can be determined based on at least one of the following: transmission resource information, MCS index, MCS table, modulation order, and code rate.

[0126] In the above embodiments, since the coding and modulation information of the M data groups is determined, the M data groups can be encoded and modulated based on the coding and modulation information to improve data transmission performance.

[0127] It should be noted that in some implementations, the above-mentioned encoding and modulation information may also be configured by the network-side device or agreed upon by the protocol. That is, in some implementations, the first device may not need to determine the above-mentioned encoding and modulation information, so as to save the cost of the first device.

[0128] In some implementations, the M data groups include a first data group and a second data group, where the modulation orders of the first data group and the second data group are different:

[0129] The code rate of the second data group is the code rate when the second data group uses the same modulation order as the first data group.

[0130] In this embodiment, the first data group and the second data group are any two of the M data groups. In this embodiment, any one of the M data groups can be determined by the bit rate of the other data group.

[0131] The modulation order of the first data group is the modulation order associated with the MCS index of the first data group, and the modulation order of the second data group is the modulation order associated with the MCS index of the second data group.

[0132] The bit rate of the second data group when it uses the same modulation order as the first data group refers to the equivalent bit rate when the second data group uses the same modulation order as the first data group. For example, if the modulation order of the first data group is 4 and the modulation order of the second data group is 6, then the bit rate of the second data group is the bit rate when the second data group uses a modulation order of 4.

[0133] Since the code rate of the second data group is the same as that of the first data group when the second data group uses the same modulation order, the code rate used by the second data group can be flexibly determined according to the first data group. This solves the problem of poor coding flexibility caused by relying on a fixed code rate allocation method, thereby improving coding flexibility and better adapting to different channel conditions to improve data transmission performance.

[0134] In some implementations, the code rate of the second data group when using the same modulation order as the first data group includes one of the following:

[0135] The code rate of the second data group when it adopts the same modulation order as the first data group is calculated based on the modulation order of the first data group, the modulation order of the second data group, and the code rate associated with the MCS index of the second data group.

[0136] The code rate of the second data group when using the same modulation order as the first data group is calculated based on the code rate associated with the MCS index of the first data group, the spectral efficiency associated with the MCS index of the first data group, and the spectral efficiency associated with the MCS index of the second data group.

[0137] The bit rate of the second data group when it adopts the same modulation order as the first data group, calculated based on the modulation order of the first data group, the modulation order of the second data group, and the bit rate associated with the MCS index of the second data group, can include: calculating the bit rate of the second data group using the following formula:

[0138] Where R′2 is the code rate used in the second data group, that is, the code rate when the second data group uses the same modulation order as the first data group, and Q is the code rate used in the second data group. m2This indicates the modulation order of the second data group, Q. m1 R1 is the modulation order of the first data group, and R2 is the code rate associated with the MCS index of the second data group.

[0139] The code rate of the second data group when using the same modulation order as the first data group, calculated based on the code rate associated with the MCS index of the first data group, the spectral efficiency associated with the MCS index of the first data group, and the spectral efficiency associated with the MCS index of the second data group, can include: calculating the code rate of the second data group using the following formula:

[0140] Wherein, R′2 is the code rate used by the second data group, that is, the code rate when the second data group uses the same modulation order as the first data group, SE2 represents the spectral efficiency associated with the MCS index of the second data group, SE1 is the spectral efficiency associated with the MCS index of the first data group, and R1 is the code rate associated with the MCS index of the first data group.

[0141] In the above embodiments, multiple methods are supported to determine the code rate of the second data group, which allows the second data group to be encoded more flexibly to adapt to different channel conditions and improve data transmission performance.

[0142] It should be noted that, in the embodiments of this application, when the modulation orders of the first data group and the second data group are different, the code rates of the first data group and the second data group can also be configured separately, that is, the code rate of the second data group is not limited to the code rate when the second data group adopts the same modulation order as the first data group.

[0143] In some implementations, the M data groups include a third data group, and the number of rate-matched output bits of the third data group is calculated based on the number of resource units, transmission layers, and modulation order of the third data group.

[0144] The third data group mentioned above is any one of the M data groups mentioned above. That is, the number of rate-matching output bits can be determined in the above manner for any one of the M data groups mentioned above.

[0145] In some implementations, the above calculation of the number of resource units, transmission layers and modulation order based on the third data group can be based on the number of resource units, transmission layers and modulation order of the third data group to calculate the total number of bits, and then the total number of bits is allocated to each data group to obtain the total number of bit rate-matched output bits.

[0146] In some implementations, the calculation of the number of resource units, transmission layers, and modulation order based on the third data group can be performed by calculating the number of rate-matched output bits of the third data group using the following formula:

[0147] Among them, the aforementioned G m N represents the number of rate-matched output bits in the third data group mentioned above. RE Q represents the number of resource units mentioned above. m The above indicates the modulation order of the third data group, and the above v indicates the transmission layer.

[0148] In some implementations, the above-mentioned G m Let n = 1, 2, ..., M represent the rate-matching output bits of any data group, and the number of rate-matching output bits for the above M data groups satisfies the following condition.

[0149] Since the number of rate-matched output bits of the third data group is calculated based on the number of resource units, transmission layers, and modulation order of the third data group, this ensures that the number of rate-matched output bits of the third data group matches the number of resource units, transmission layers, and modulation order of the third data group, thereby improving data transmission performance.

[0150] In some implementations, the number of rate-matched output bits for each of the above data groups can also be configured by the network-side device or agreed upon by the protocol.

[0151] In some implementations, the first device determines the MCS index for each data group based on Downlink Control Information (DCI);

[0152] The DCI indicates the MCS index for each data group;

[0153] Alternatively, the DCI indicates the MCS index of one of the M data groups, and indicates the difference between the MCS index of the remaining data groups and the MCS index of the one data group.

[0154] The DCI mentioned above indicates that the MCS index for each data group can be the MCS index displayed in the DCI indicating each data group.

[0155] The aforementioned DCI indicates the MCS index of one of the M data groups. The DCI can explicitly indicate the MCS index of one of the M data groups, while the MCS indices of the remaining data groups are calculated based on the MCS index of this one data group. In this way, since it is not necessary to indicate the MCS index of each data group, the DCI overhead can be saved.

[0156] In some implementations, the DCI includes M MCS fields, wherein the M MCS fields are used to indicate the MCS indexes of the M data groups, or one of the M MCS fields indicates the MCS index of a data group, and the remaining MCS fields are used to indicate the difference between the MCS indexes of the remaining data groups and the MCS index of the data group.

[0157] The aforementioned MCS field can also be described as a "Modulation and coding scheme" field. For example, when the higher-level parameter associated with the number of transmitted data groups indicates that the number of data groups corresponding to a single codeword is M, the aforementioned DCI indicates the MCS index of different data groups corresponding to a single codeword in the "Modulation and coding scheme" field, and each "Modulation and coding scheme" field is X bits in size, where X is associated with the largest MCS index in the MCS table used.

[0158] For example, the aforementioned DCI indicates the MCS index of one of the data groups, such as indicating the MCS index I of the first data group. MCS1 And the MCS index I indicating the second data group MCS2 MCS index I of the first data group MCS1 Difference information I MCS1 -I MCS2 Then the "Modulation and coding scheme" field associated with the first data group has a size of X bits, and the "Modulation and coding scheme" field associated with the second data group has a size of Y bits, where Y and I are related. MCS1 -I MCS2 The maximum value associated with it.

[0159] In the above implementation, each data group corresponds to an MCS field, which enables the first device to easily and quickly determine the MCS index of each data group, thereby improving data processing efficiency.

[0160] In some implementations, the first device determines the coding and modulation information of the M data groups by including:

[0161] The first device determines the coding and modulation information of the M data groups based on at least one of channel information, decoding information, and received signaling.

[0162] The aforementioned channel information may include at least one of the following:

[0163] Channel quality indicator (CQI), signal to interference plus noise ratio (SINR), and signal to noise ratio (SNR).

[0164] The above-mentioned decoding information may include at least one of the following:

[0165] Decoding result information, actual bit error rate (BER), actual block error rate (BLER), target bit error rate, and target block error rate.

[0166] The decoding result information includes whether the decoding is correct or incorrect, such as Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) information, where HARQ-ACK information can be at the TB level, CBG level, or CB level.

[0167] The aforementioned actual bit error rate and actual block error rate refer to the actual bit error rate and actual block error rate of the data groups associated with the aforementioned M data groups during the initial transmission or before the aforementioned M data groups during the transmission process.

[0168] The aforementioned target bit error rate and target block error rate can be the target set for the aforementioned M data sets or the bit error rate and block error rate expected to be achieved.

[0169] The first device, based on at least one of channel information, decoding information, and received signaling, determines that the coding and modulation information of the M data groups includes at least one of the following:

[0170] The first device determines the coding and modulation information of the M data groups based on channel information;

[0171] The first device determines the encoding and modulation information of the M data groups based on the decoding information;

[0172] The first device determines the coding and modulation information of the M data groups based on the received signaling;

[0173] The first device determines the coding and modulation information of the M data groups based on channel information and decoding information;

[0174] The first device determines the coding and modulation information of the M data groups based on channel information and received signaling;

[0175] The first device determines the coding and modulation information of the M data groups based on the decoding information and the received signaling;

[0176] The first device determines the coding and modulation information of the M data groups based on channel information, decoding information, and received signaling.

[0177] The first device determines the coding and modulation information of the M data groups based on channel information. This can be done by determining coding and modulation information for the M data groups that can improve channel quality or adapt to channel conditions. For example, adjusting the code rate, modulation scheme, transmission resources, and the mapping method from coded bits to modulation symbols can improve channel quality. This allows for flexible determination of the coding and modulation information of the M data groups based on channel information, avoiding reliance on fixed coding and modulation information (such as a fixed code rate or a fixed mapping method from coded bits to modulation symbols). This makes the coding and modulation scheme more flexible, adaptable to different channel conditions, and improves data transmission performance.

[0178] The first device described above determines the coding and modulation information of the M data groups based on the decoding information. This determination can be based on the decoding information to improve channel quality, adapt to channel conditions, improve decoding accuracy, approach the target bit error rate, approach the target block error rate, and reduce the bit error rate and block error rate. For example, adjusting the code rate, modulation scheme, transmission resources, and the mapping method from coded bits to modulation symbols can improve channel quality, adapt to channel conditions, improve decoding accuracy, approach the target bit error rate, approach the target block error rate, and reduce the bit error rate and block error rate. This allows for flexible determination of the coding and modulation information of the M data groups based on the decoding information, avoiding reliance on fixed coding and modulation information (such as a fixed code rate or a fixed mapping method from coded bits to modulation symbols). This makes the coding and modulation scheme more flexible, adaptable to different channel conditions, and improves data transmission performance.

[0179] The first device can determine the coding and modulation information of the M data groups based on the received signaling. This can be achieved by the first device receiving signaling that explicitly or implicitly indicates the coding and modulation information of the M data groups. This allows for flexible determination of the coding and modulation information of the M data groups based on the received signaling, avoiding reliance on fixed coding and modulation information (such as a fixed code rate or a fixed mapping method from coded bits to modulation symbols). This makes the coding and modulation scheme more flexible, adaptable to different channel conditions, and improves data transmission performance.

[0180] The first device determines the coding and modulation information of the M data groups based on at least two of the channel information, decoding information, and received signaling. This can be done by determining the coding and modulation information of the M data groups that can improve channel quality, adapt to channel conditions, improve decoding accuracy, approach the target bit error rate, approach the target block error rate, reduce the bit error rate, and reduce the block error rate, or when the signaling indicates part of the coding and modulation information, it determines another part of the coding and modulation information based on at least one of the channel information and decoding information.

[0181] Since the first device determines the coding and modulation information of the M data groups based on at least one of the channel information, decoding information, and received signaling, the coding and modulation information of the M data groups can be determined flexibly to avoid relying on fixed coding and modulation information (such as a fixed code rate or a fixed mapping method from coded bits to modulation symbols), making the coding and modulation scheme more flexible and adaptable to different channel conditions, thereby improving data transmission performance.

[0182] In some embodiments, the method further includes:

[0183] The first device receives at least one of the channel information, the decoding information, and the received signaling.

[0184] The first device mentioned above may be at least one of the following: channel information sent by the second device or other devices, the decoding information, and the received signaling.

[0185] In some implementations, the aforementioned channel information and decoding information may also be obtained by the first device through measurement.

[0186] As an optional implementation, the method further includes:

[0187] The first device determines the value of M, where M represents the number of data groups to be transmitted jointly.

[0188] The value of M can be determined based on higher-layer parameters. For example, the first device can determine the value of M based on the higher-layer parameters configured by the network-side device, such as the higher-layer parameters associated with the number of data groups transmitted. Alternatively, it can be determined based on the parameters configured by the first device for the terminal, or it can be determined by the first device based on its own policy.

[0189] Since the value of M is determined by the first device, this allows for more flexible transmission to meet the needs of more scenarios or services.

[0190] In some implementations, the number of data groups mentioned above is the number of data groups corresponding to a single codeword, and the first device determines the value of M to include the following:

[0191] The first device determines the value of M based on the parameter of the number of individual codeword data groups;

[0192] The first device determines the value of M based on at least one of the number of data groups scheduled by DCI and the number of codewords scheduled by DCI.

[0193] The number of data groups corresponding to a single codeword can be understood as the data of these data groups after being processed by the encoding-related process into a single codeword. The encoding-related process may include: adding CRC, code block segmentation, encoding, and rate matching.

[0194] The above parameter for the number of single codeword data groups can be the parameter for the number of single codeword transport blocks (maxNrofTransportBlocks PerCodeWord), the parameter for the number of single codeword sub-TBs, or the parameter for the number of single codeword code block groups.

[0195] The value of M is determined based on the number of individual codeword data groups, and this parameter can be used to explicitly or implicitly indicate the value of M.

[0196] The value of M can be determined by dividing the number of data groups scheduled by the number of codewords scheduled by ...

[0197] In some implementations, when the data group is a transport block, the number of individual codeword data groups can be maxNrofTransportBlocksPerCodeWord, and the number of data groups scheduled by DCI can be indicated by maxNrofTransportBlocksScheduledByDCI.

[0198] The value of M can be determined based on the number of data groups scheduled by DCI, which can be determined by the mapping relationship between the number of data groups scheduled by DCI and the value of M obtained in advance.

[0199] The value of M can be determined based on the number of codewords in the DCI scheduling, which can be determined by the mapping relationship between the number of codewords in the DCI scheduling and the value of M obtained in advance.

[0200] In the above embodiments, since the number of data groups is the same as the number of data groups corresponding to a single codeword, it supports the transmission of multiple data groups for a single codeword, thereby improving data transmission performance. Furthermore, it supports various parameter configurations for the value of M to enhance the flexibility of joint transmission.

[0201] In some implementations, the aforementioned multiple data groups may also correspond to multiple codewords, that is, the number of data groups may also be the number of codewords.

[0202] Alternatively, each data group can correspond to a codeword, meaning that data corresponding to different codewords (different data groups) are mapped to the same modulation symbol during modulation, and the encoded bits of the different codewords within the same modulation symbol are mapped to their respective associated modulation bits. In this case, the value of M can also be determined by a parameter indicating the number of codewords scheduled by the DCI, i.e., the number of codewords scheduled by the DCI is the number of data groups M; or, the value of M can be directly determined based on the number of data groups scheduled by the DCI, i.e., the number of data groups scheduled by the DCI is the number of data groups M. Here, the number of codewords scheduled by the DCI M is the number of codewords mapped to the same data stream (Layer), and the number of data groups scheduled by the DCI M is the number of transport blocks mapped to the same data stream (Layer). For example, when supporting the transmission of 8 data streams, the total number of codewords in DCI scheduling is 4, where every 2 codewords are mapped to the same data stream. For example, codeword 0 and codeword 1 are mapped to data streams 0-3, and codeword 2 and codeword 3 are mapped to data streams 4-7. The data of codeword 0 and codeword 1 are jointly encoded and modulated, and the data of codeword 2 and codeword 3 are jointly encoded and modulated. This encoding and modulation scheme is as described in the previous embodiment.

[0203] As an optional implementation, the method further includes:

[0204] The first device sends or receives association information for the M data groups, the association information including at least one of the following:

[0205] The number of data groups in the M data groups;

[0206] The encoded modulation information of the M data groups.

[0207] The first device sending M sets of associated information can be the first device sending M sets of associated information to the second device, and the first device receiving M sets of associated information can be the first device receiving M sets of associated information sent by the second device. In the case of receiving, the association information of the M sets of data can be determined by the second device or by other devices and sent to the second device, which then sends it to the first device.

[0208] By sending or receiving the association information of the M data groups as described above, both the sender and receiver can have a consistent understanding of the modulation of the M data groups, which is beneficial to improving the data transmission performance.

[0209] As an optional implementation, the first device encodes and modulates the M data groups by at least one of the following:

[0210] When the data group includes a TB or a sub-TB, the M TBs or sub-TBs are divided into code blocks, wherein the M TBs are divided into code blocks of the same number, or the M sub-TBs are divided into code blocks of the same number.

[0211] The M data groups are encoded using the same encoding parameters;

[0212] The rate-matched output code blocks of the M data groups are jointly interleaved in rows and columns.

[0213] It should be noted that the above-mentioned encoding and modulation of M data groups by the first device includes at least one of the above-mentioned steps. This can be understood as the first device encoding and modulating M data groups including at least one of the above-mentioned steps, but it does not limit the implementation process of this step to at least one of the above-mentioned steps. For example, when the data group is a code block group, the above-mentioned encoding and modulation of M data groups by the first device does not include code block segmentation. For another example, the above-mentioned encoding and modulation of M data groups by the first device also includes modulation. For yet another example, the above-mentioned encoding and modulation of M data groups by the first device can use different encoding parameters to encode the above-mentioned M data groups, or it can not use row and column interleaving, etc.

[0214] The above-mentioned code block segmentation of the M TBs or sub-TBs can be performed by segmenting each TB or sub-TB separately, resulting in the same number of code blocks obtained from the segmentation of the TB or sub-TB. The code blocks after segmentation of each TB or sub-TB can be encoded at the code block granularity or at the CBG granularity.

[0215] Since the data group includes TBs, the M TBs or sub-Ts are divided into code blocks, which supports finer-grained transmission and makes data transmission more reliable.

[0216] It should be noted that in some implementations, code block segmentation may not be performed.

[0217] The above-mentioned encoding of the M data groups using the same encoding parameters can mean that all or part of the encoding parameters are the same during the encoding process. For example, the above-mentioned encoding parameters include at least one of the following:

[0218] Encoding block size (BG), boost factor, parity check matrix, generator matrix, encoder input block length, encoder output block length, and master code rate.

[0219] That is, at least one of the above must be the same.

[0220] By using the same encoding parameters to encode the M data groups, the complexity of the encoding can be reduced.

[0221] It should be noted that in some embodiments, the first device may encode and modulate the M data groups using different encoding parameters.

[0222] The above-mentioned joint row and column interleaving of the rate-matched output code blocks of the M data groups refers to feeding the rate-matched output code blocks of the M data groups into the interleaver in turn for interleaving. For example, the rate-matched output code blocks of the M data groups are concatenated and fed into the interleaver for joint interleaving. Alternatively, the rate-matched output code blocks of each data group are fed into the interleaver in turn according to the order of MCS index from large to small or code rate from high to low. One rate-matched output code block is fed in at a time. For example, the rate-matched output code block r of data group 0 is fed into the interleaver, then the rate-matched output code block r of data group 1 is fed into the interleaver, then the rate-matched output code block r+1 of data group 0 is fed into the interleaver, and then the rate-matched output code block r+1 of data group 1 is fed into the interleaver.

[0223] The interleaving effect can be improved by jointly performing row and column interleaving on the rate-matched output code blocks of the M data groups.

[0224] In some implementations, the rate-matched output code blocks of the M data groups may be interleaved individually, that is, it is not limited to performing row and column interleaving on the rate-matched output code blocks of the M data groups together.

[0225] In some implementations, the interleaving depth of the row-column interleaving is Q. m The number of columns in the interleaving of the rows and columns is equal to J. r / Q m , wherein, the Q m The average modulation order of the M data groups, or the Q... m J represents the modulation order of one of the M data groups. r This represents the sum of the rate-matched output code block lengths of the M data groups.

[0226] Among them, the above Q m The modulation order of one of the M data groups can be any data group. For example, if the modulation order of the M data groups is the same, the above Q... m Q represents the modulation order of any one of the M data groups; m It can be the modulation order of a specific data group, such as the modulation order of the data group with the largest modulation order, the modulation order of the data group with the smallest modulation order, or the modulation order that is closest to the average of the modulation orders of the M data groups.

[0227] Since the interleaving depth of the row-column interleaving is Q mThe number of columns in the interleaving of the rows and columns is equal to J. r / Q m This allows for better row and column interleaving of the rate-matched output code blocks of the M data groups, thereby improving the interleaving effect.

[0228] In some implementations, during the row-column interleaving, the rate-matched output code blocks of the M data groups are fed into the interleaver in turn according to the MCS index or code rate; or

[0229] In the row-column interleaving, the system bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate, and the parity bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate.

[0230] The aforementioned method of feeding the rate-matched output code blocks of the M data groups into the interleaver in turn according to the MCS index or code rate can be achieved by feeding the rate-matched output code blocks of the M data groups into the interleaver in descending order of MCS index or code rate, or in ascending order of code rate. Feeding the rate-matched output code blocks of the M data groups into the interleaver in turn can also mean feeding one rate-matched output code block from each data group into the interleaver at a time. For example, as shown in Figure 9, each interleaving operation is performed on one code block from each of the two TBs.

[0231] By feeding the rate-matched output code blocks of the M data groups into the interleaver in turn according to the MCS index or code rate, the interleaving of the M data groups can be made more reliable, thereby improving data transmission performance.

[0232] The aforementioned method of feeding the system bits of the rate-matched output code blocks of the M data groups into the interleaver in turn according to the MCS index or code rate can also be achieved by feeding the system bits of the rate-matched output code blocks of the M data groups into the interleaver in turn according to the MCS index or code rate in descending or ascending order. Similarly, the aforementioned method of feeding the parity bits of the rate-matched output code blocks of the M data groups into the interleaver in turn according to the MCS index or code rate in descending or ascending order. For example, as shown in Figure 10, feeding the system bits first and then the parity bits makes the system bits of the M data groups more tightly packed, improving the interleaving effect and thus enhancing data transmission performance.

[0233] It should be noted that the various implementation methods provided in this application can be combined with each other or implemented individually, and there is no limitation on this.

[0234] In this embodiment, a first device encodes and modulates M data groups to obtain modulated data, where M is an integer greater than 1. During modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and within the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their associated modulation bits. The first device then transmits the modulated data. This allows the transmission of encoded bits from multiple data groups within the same modulation symbol, thereby improving data transmission performance.

[0235] The following uses a data set (TB) as an example to illustrate the method provided in the embodiments of this application through multiple examples:

[0236] Example 1:

[0237] The first device determines a coding and modulation scheme for at least two TBs (also known as subTBs), encodes and modulates the at least two TBs, and then transmits the modulated data.

[0238] Modulating the at least two TBs includes jointly modulating the coded bits of the at least two TBs and mapping the coded bits of different TBs to their respective associated modulation bits. Joint modulation means that the coded bits of the at least two TBs are mapped to the same modulation symbol during the modulation process; that is, the same modulation symbol contains the coded bits of the at least two TBs.

[0239] In some implementations, the first device determining a coding and modulation scheme of at least 2 TB includes: determining coding and modulation parameters of at least 2 TB, which may include at least one of the following:

[0240] MCS index (or MCS level), including the respective MCS indexes of at least 2 TB;

[0241] The MCS table can be the same MCS table used when encoding and modulating the at least 2 TBs;

[0242] The modulation scheme or modulation order, wherein the modulation order (or modulation scheme) of the at least two TBs is the same, can be based on the MCS index I of the first TB. MCS1 Determine the modulation order of the first TB and the second TB, i.e., based on the MCS index I of the first TB. MCS1 The modulation order of the first TB is determined, and the second TB adopts the same modulation order as the first TB;

[0243] Bitrate (also known as encoding rate), including the bitrate of each of the at least 2 TBs, (MCS index I of the first TB) MCS1 Associated modulation order Q m1 With the second TB of MCS index I MCS2 Associated modulation order Qm2 (When they are not the same), the method for determining the second TB coding rate can be as follows:

[0244] The modulation order Q is associated with the MCS index of the first TB. m1 The modulation order Q associated with the MCS index of the second TB m2 The equivalent code rate R′2 when the second TB uses the same modulation order as the first TB is determined by the code rate R2, that is:

[0245] Alternatively, the equivalent code rate of the second TB when using the same modulation order as the first TB can be determined based on the code rate R1 associated with the MCS index of the first TB, the spectral efficiency SE1 associated with the MCS index of the first TB, and the spectral efficiency SE2 associated with the MCS index of the second TB.

[0246] The transmission resource, wherein the at least 2 TB of data is mapped to the same transmission resource, the transmission resource includes at least one of the following:

[0247] Number of resource units N RE This includes at least one of the following: the number of allocated OFDM symbols, the number of subcarriers within a single PRB used to carry the current TB data, the number of allocated PRBs, and the number of REs within a single PRB used to carry DMRS.

[0248] Number of transport layers, v.

[0249] TBsize includes the TBsize of each of the at least two TBs. TBsize can be determined based on at least one of the following: transmission resource information, MCS index, MCS table, modulation order, and code rate.

[0250] The number of bits after rate matching, including the number of bits G corresponding to each of the at least two TBs after rate matching. m Let n = 1, 2, ..., M, where M represents the number of TBs. The number of bits after rate matching for each of the at least two TBs satisfies... Optionally, the number of bits corresponding to each of the at least two TBs after rate matching is the same, i.e.

[0251] In some implementations, before the first device determines the coding and modulation scheme of at least 2 TBs, the first device further determines the number of TBs M, wherein the number of TBs M refers to the number of TBs corresponding to a single codeword.

[0252] It can be determined based on higher-layer parameters associated with the number of TBs transmitted, including determining the number of TBs M corresponding to a single codeword based on the parameter `maxNrof TransportBlocksPerCodeWord`; or determining the number of TBs M·N scheduled by DCI based on the parameter `maxNrof TransportBlocksScheduledByDCI`. CW The number of codewords N is determined based on the parameter maxNrofCodeWordsScheduledByDCI. CW This allows us to determine the number of TBs (M) corresponding to a single codeword.

[0253] In some implementations, the first device (network-side device) sends information indicating the number of TBs to the second device (terminal), and / or information indicating the coding and modulation parameters. Alternatively, the first device (terminal device) receives information indicating the number of TBs and / or information indicating the coding and modulation parameters sent by the second device (network-side device).

[0254] The information can be sent via the same signaling or via different signaling, such as via RRC signaling to indicate higher-level parameters associated with the number of TBs transmitted, or via MCS tables, or via DCI signaling to indicate the MCS index of the at least 2 TBs.

[0255] In some implementations, indicating the at least two TB of MCS indexes via DCI signaling includes indicating the first TB of MCS index I. MCS1 and the second TB of MCS index I MCS2 With the first TB of MCS index I MCS1 Difference information I MCS1 -I MCS2 .

[0256] When the higher-layer parameter associated with the number of TBs transmitted indicates that the number of TBs corresponding to a single codeword is M, the DCI needs to indicate the MCS index of the different TBs corresponding to the single codeword in the "Modulation and coding scheme" field, and each "Modulation and coding scheme" field is X bits in size, where X is associated with the largest MCS index in the MCS table used.

[0257] If the MCS index I indicates the first TB MCS1 and the second TB of MCS index I MCS2 With the first TB of MCS index I MCS1 Difference information IMCS1 -I MCS2 Then the size of the "Modulation and coding scheme" field associated with the first TB is X bits, and the size of the "Modulation and coding scheme" field associated with the second TB is Y bits, where Y and I are related. MCS1 -I MCS2 The maximum value associated with it.

[0258] In some implementations, the first device determines at least two TBs of coding and modulation parameters, including acquiring channel information or decoding information and determining at least two TBs of coding and modulation parameters based on the channel information or decoding information. The channel information may be a CQI value, or SNR or SINR information, and the decoding information may be decoding correctness or error information associated with the at least two TBs, or bit error rate (BER) / block error rate (BLER) information, or target block error rate information.

[0259] In some implementations, the first device (network-side device) receives channel information, i.e., CQI information, sent by the second device (terminal), or receives decoding correct or incorrect information associated with the at least two TBs, i.e., HARQ-ACK information, sent by the second device (terminal). The HARQ-ACK information may be at the TB level, or at the CBG level, or at the CB level.

[0260] The HARQ-ACK information includes ACK or NACK messages. The receiver considers it to have successfully received the correct data and replies with an "ACK" to the sender; if the receiver has not received the data correctly, it replies with a "NACK". For the TB or CBG level HARQ-ACK information, if at least one code block in the TB or CBG is decoded incorrectly, the receiver sends a "NACK" to the sender, indicating a reception error for that TB or CBG; if all code blocks in the TB or CBG are decoded correctly, the receiver sends an "ACK" to the sender, indicating a correct reception of that TB or CBG.

[0261] In some implementations, the first device encodes and modulates at least 2 TB, including at least one of the following:

[0262] At least two TBs are segmented into code blocks, and the number of code block segments is the same.

[0263] At least two TB of rate-matched (bit-selected) output code blocks are jointly interleaved in rows and columns, and the interleaver depth (number of rows) is equal to the modulation order Q. m The number of interleaver columns is in This represents the sum of the lengths of the rate-matched output code blocks of N TBs used for joint interleaving, where the rate-matched output code blocks of M TBs can include one of the following:

[0264] Interleaving method 1: The rate-matched output code blocks of M TB are fed into the interleaver in descending order of MCS index (or code rate from high to low);

[0265] Interleaving method 2: First, the system bits of the rate-matched output code block of M TB are sent into the interleaver in descending order of MCS index (or code rate from high to low), and then the parity bits of the rate-matched output code block of M TB are sent into the interleaver in descending order of MCS index (or code rate from high to low).

[0266] The encoding parameters used to encode at least two TBs are identical, and the encoding parameters include at least one of the following:

[0267] Encoding base map (BG), boost factor, parity check matrix, generator matrix, encoder input block length, encoder output block length, and master code rate.

[0268] In this embodiment, the specific process can be shown in Figure 11. In this embodiment, the coded bits of the two TBs are mapped to different bits of the same modulation symbol during joint modulation, which makes the transmission performance of the two TBs different during transmission. According to the channel information and the decoding information of the two TBs, appropriate coding and modulation schemes are assigned to the two TBs respectively, which can improve the overall data transmission performance.

[0269] The data transmission performance of the system employing the LDPC coding and modulation optimization scheme was simulated and evaluated, with the 5G NR LDPC coding scheme serving as a comparison. The simulation used a CDL-A fading channel, with an antenna configuration of 1 transmit and 2 receive, and 273 resource blocks (RBs) allocated for data transmission. Both schemes used the same LDPC decoding algorithm and the maximum number of decoding iterations. Figure 12 shows the performance evaluation results of the scheme using 2 TBs of joint transmission, including interleaving methods 1 and 2, and the comparison scheme (5G LDPC). 1201, 1202, and 1203 represent the performance evaluation results of interleaving method 1, interleaving method 2, and 5G LDPC, respectively. It can be seen that, given a fixed amount of transmission resources, the scheme using 2 TBs of joint transmission achieves a higher throughput compared to the NR baseline scheme.

[0270] Example 2:

[0271] This embodiment takes two TB joint coding modulation as an example to explain in detail the method for determining its modulation mode (modulation order) and code rate.

[0272] The number of TBs to be transmitted is determined to be 2, and the MCS table to be used, as well as the MCS index I of the first TB, are determined. MCS1 The second TB of MCS index I MCS2 Among them, the MCS index of the first TB is greater than or equal to the MCS index of the second TB, i.e., I MCS1 ≥I MCS2 .

[0273] According to the MCS index I of the first TB MCS1 The second TB of MCS index I MCS2 The modulation order Q of the first TB is determined by looking up the MCS table. m1 The modulation order Q of the second TB m2 The code rate R1 of the first TB and the code rate R2 of the second TB. The modulation order of the first TB is greater than or equal to the modulation order of the second TB, i.e., Q. m1 ≥Q m2 Alternatively, the bitrate of the first TB is greater than or equal to the bitrate of the second TB, i.e., R1≥R2.

[0274] If the modulation order of the first TB is different from that of the second TB, i.e. Q m1 Q m2 Then the second TB uses the same modulation order as the first TB, i.e., Q′. m2 =Q m1 Furthermore, it is necessary to calculate the equivalent code rate R′2 when the second TB uses the same modulation order as the first TB, that is, according to the modulation order Q of the first TB. m1 And the code rate R1 and the equivalent modulation order Q′ of the second TB m2 The two TBs are encoded and modulated using an equivalent code rate R′2.

[0275] The calculation method for the equivalent code rate R′2 of the second TB is as described in the previous embodiment. When Q m1 =Q m2 At that time, directly according to the modulation order Q of the first TB m1 And the code rate R1 and the modulation order Q of the second TB m2 Encoding and modulating two TBs using a code rate R2 can also be done according to the modulation order Q of the first TB. m1 And the code rate R1 and the equivalent modulation order Q′ of the second TB m2 Encode and modulate 2 TBs using the equivalent code rate R′2 (at this time, the equivalent modulation order Q′ of the second TB is...) m2 =Q m2 The equivalent code rate of the second TB is R′2=R2).

[0276] In some implementations, the equivalent code rate R′1 when the first TB uses the same modulation order as the second TB can be calculated. That is, the two TBs are encoded according to the equivalent code rate R′1 of the first TB and the code rate R2 of the second TB. The specific calculation method is similar to the previous embodiments.

[0277] The modulation order Q is associated with the MCS index of the first TB. m1 And the code rate R1, the MCS index of the second TB associated with the modulation order Q m2 Determine the equivalent code rate R′1 when the first TB uses the same modulation order as the second TB, that is:

[0278] Alternatively, the equivalent code rate R′1 when the first TB uses the same modulation order as the second TB can be determined based on the code rate R2 associated with the MCS index of the second TB, the spectral efficiency SE1 associated with the MCS index of the first TB, and the spectral efficiency SE2 associated with the MCS index of the second TB.

[0279] Example 3:

[0280] This embodiment takes joint coding and modulation of 2 TBs as an example to give a method for calculating different TB sizes, that is, determining the number of information bits corresponding to different TBs, specifically including:

[0281] Determine the number of information bits associated with different TBs. In this embodiment, N = 2. It is based on the number of resource units N RE Number of transmission layers v, modulation order Q m1 The bit rate R1 is calculated, specifically it can be... in It is based on the number of resource units N RE Number of transmission layers v, equivalent modulation order Q′ m2 The equivalent code rate R′2 is calculated, specifically it can be...

[0282] It is important to note that here... This is an intermediate calculation result; the actual number of information bits transmitted is determined by the final calculated TBsize.

[0283] Optionally, the calculation of the correlation parameter for the number of information bits corresponding to different TBs further includes being related to the scaling factor β corresponding to different TBs, i.e.

[0284] The number of code blocks C corresponding to each group is determined. The number of code blocks corresponding to each group is the same. The number of code blocks C is an association parameter based on the number of information bits corresponding to the first TB. The number of code blocks after code block segmentation is determined by the parameter associated with the number of information bits corresponding to the highest MCS level (highest code rate).

[0285] TBsize calculation includes:

[0286] The sum of the TBsize and CRC length of each TB is divisible by 8·C (where 8 indicates that the TBsize is an integer number of bytes, 1 byte = 8 bits), which can be based on... Calculate, where N CRC This represents a numerical value associated with the CRC length. K0 represents a value associated with the length of the encoder input code block.

[0287] It should be noted that in the TBsize calculation It could also be It is based on Calculated, for example or K1, K2, A, and B are positive integers.

[0288] Alternatively, you can directly look up the TBsize value in a table, for example, for N. info The value is quantized, if N info ≤3824, then pass Quantize and calculate TBsize by referring to Table 3.

[0289] Table 3:

[0290] Example 4:

[0291] This embodiment takes two TB joint coding modulation as an example to give the code block segmentation method and rate matching method (bit selection) for different TBs.

[0292] As described in the previous embodiments, the number of code block segments in different TBs is the same, which is C. That is, the code block segmentation method is determined according to the first TB, specifically including:

[0293] After adding TB CRC, the number of information bits corresponding to the first TB and the second TB are B1 and B2, respectively, where B q =TBS q +N TB-CRC B2 = TBS2 + N TB-CRC N TB-CRCIndicates the TB CRC length.

[0294] Determine the maximum coded block length K corresponding to the first TB. cb Then, based on the number of information bits corresponding to the first TB (B1), the number of code block segments C is determined. Specifically, it can be:

[0295] If B1≤K cb If so, no code block segmentation is needed, and C = 1;

[0296] If B1>K cb , N CB-CRC Indicates the CB CRC length.

[0297] The first TB and the second TB are divided into code blocks according to the number of code blocks C. Each TB corresponds to C information code blocks, i.e., encoded input code blocks. According to the TBsize calculation method in Embodiment 2, the number of information bits in the first TB and the second TB is divisible by the number of code blocks C.

[0298] After code block segmentation, CB CRC is added to each code block of different TBs, and then each code block is encoded according to the encoding parameters corresponding to different TBs.

[0299] After obtaining the encoded output code blocks, rate matching (bit selection) is performed on each encoded output code block for each TB, including determining the number G of rate-matched output bits corresponding to each TB. n (i.e., the total number of coded bits available for transmission corresponding to each TB), n = 1, 2, ..., N, in this embodiment N = 2. Where G1 is based on the number of resource units N. RE Number of transmission layers v, modulation order Q m1 Calculated, specifically Where G2 is based on the number of resource units N RE Number of transmission layers v, equivalent modulation order Q′ m2 Calculated, specifically

[0300] In some implementations, the calculation of the number of rate-matched output bits corresponding to different TBs also includes a scaling factor β corresponding to different TBs, i.e., G1 = N RE ·Q m1 ·v·β,G2=N RE ·Q′ m2 ·v·(1-β).

[0301] Based on the number of rate-matched output bits corresponding to each TB, determine the length of the C rate-matched output code blocks corresponding to each TB, for example:

[0302] The length of the bit sequence after rate matching of the n-th TB and the r-th code block is: The calculation method is as follows:

[0303] Where v represents the transport layer number to which the transport block is mapped, and Q m C is the modulation order. ′ Indicates the number of code blocks transmitted. If CBG-based transmission is not used, C ′ This is the number of code blocks after the TB code block is divided.

[0304] After determining the lengths of the C rate-matched output code blocks corresponding to each TB, bit selection is performed on each encoded output code block to obtain the set of bits that satisfy the length of the rate-matched output code block.

[0305] Example 5:

[0306] This embodiment mainly describes interleaving and joint modulation.

[0307] As described in the previous embodiment, the coded bits of the TB are mapped to the modulation symbol bits according to the association between the TB and the modulation symbol bits.

[0308] When the modulation order is Q m hour, This represents the sub-channel capacity of each bit in the modulation symbol. The relationship between the sub-channel capacities of the modulation symbol bits is as follows: Sub-channel The data corresponds to the I-channel data modulated by QAM, sub-channel The data corresponds to the Q-channel data of QAM modulation.

[0309] Taking a 2TB transmission as an example, i.e., N=2, and the number of output bits G corresponding to different TB rates is matched. n (That is, the total number of coded bits available for transmission for each TB) is the same, i.e. Then each TB is associated with a bit sub-channel. The first TB and higher capacity Individual channel association, second TB with lower capacity Sub-channel association, for example:

[0310] For 16QAM, the sub-channels associated with the first TB are sub-channels 1 and 3, and the sub-channels associated with the second TB are sub-channels 2 and 4.

[0311] For 64QAM, the sub-channels associated with information bit group 0 are sub-channels 1, 4, and 2, and the sub-channels associated with the second TB are sub-channels 5, 3, and 6.

[0312] For 256QAM, the sub-channels associated with information bit group 0 are sub-channels 1, 5, 2, and 6, and the sub-channels associated with the second TB are sub-channels 3, 7, 4, and 8.

[0313] For 1024QAM, the sub-channels associated with information bit group 0 are sub-channels 1, 6, 2, 7, and 3, and the sub-channels associated with the second TB are sub-channels 8, 4, 9, 5, and 10.

[0314] After each data point (TB) completes encoding and rate matching, during QAM modulation, the encoded bits of different TBs are mapped to their associated modulation symbol bit sub-channels, i.e., the corresponding bit positions. Therefore, during data transmission, different TBs receive varying levels of protection, resulting in differences in data transmission reliability.

[0315] The specific mapping method can be accomplished using an interleaver:

[0316] Interleaving Method 1: The code blocks corresponding to the first TB are fed into the interleaver in the order of first TB, then second TB, for interleaving. A row-column interleaver is used, and the interleaver depth (number of rows) is equal to the modulation order Q. m The number of interleaver columns is in This represents the sum of the rate-matched output code block lengths used for joint interleaving, that is, the sum of the rate-matched output code block lengths corresponding to the first TB and the second TB, as shown in Figure 9.

[0317] Interleaving method 2: Alternatively, the system bits in the rate-matched output code blocks of each TB can be sent to the interleaver in the order of first TB, then second TB, and the parity bits in the rate-matched output code blocks of each TB can be sent to the interleaver in the order of first TB, then second TB, as shown in Figure 10.

[0318] Through the above interleaving process, the at least 2 TB of coded bits are mapped to the same modulation symbol according to a preset rule during the modulation process, that is, the same modulation symbol contains the at least 2 TB of coded bits.

[0319] This application provides a method for joint transmission of multiple transport blocks. Each transport block determines its own coding and modulation scheme, and then performs coding and joint modulation. This solves the problem that relying on a fixed code rate allocation method and a fixed mapping method from coded bits to modulation symbols leads to poor scheme flexibility and performance loss. It makes the coding and modulation scheme more flexible, adaptable to different channel conditions, and improves data transmission performance.

[0320] The joint transmission method provided in this application can be executed by a signal joint transmission device. This application uses a signal joint transmission device executing the joint transmission method as an example to illustrate the signal joint transmission device provided in this application.

[0321] This application provides a signal joint transmission device. As an example, the signal joint transmission device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0322] Example 6:

[0323] This embodiment mainly describes adaptive MCS, such as determining the MCS based on channel information and decoding information, taking the first device as a terminal or network-side device as an example for illustration.

[0324] Adaptive coding and modulation typically combines outer-loop control and inner-loop control. Inner-loop control involves network-side equipment inferring the channel state based on the CQI value reported by the terminal or the channel SNR / SINR information measured by the base station itself, obtaining a level value for the channel state quality. Different channel state quality levels are associated with different MCS levels or MCS indices. Outer-loop control involves network-side equipment dynamically and proactively increasing or decreasing the channel state quality level value based on whether the data is correctly received (i.e., ACK) or not correctly received (i.e., NACK), and the BLER requirement of the target data block (e.g., below 10%), thereby adjusting the final MCS level.

[0325] For downlink data transmission, network-side equipment determines the MCS (Mean Channel Situation) for downlink data transmission based on CQI (Channel Quality Indicator) and HARQ (Handicap Indicator) information reported by the terminal. On one hand, for CQI feedback, if the wireless conditions are good, a higher channel status rating is used, correspondingly employing a higher MCS and code rate to increase system throughput; conversely, if the wireless environment is poor, a lower channel status rating is used, requiring a lower MCS and code rate to increase transmission reliability. On the other hand, for HARQ feedback, if the network-side equipment receives an ACK (Accept) HARQ response, it indicates that the data can be correctly received according to the current channel coding and debugging methods, and the block error rate (BLER) meets the target BLER requirement. In this case, the channel status rating can be tentatively increased. If the received HARQ response is NACK (Non-ACK), it indicates that the data cannot be correctly received according to the current channel coding and debugging methods, or the BLER does not meet the target BLER requirement (i.e., the BLER is too high). In this case, the channel status rating can be tentatively decreased, and a corresponding MCS level can be selected. For uplink data transmission, the base station determines the MCS of uplink data transmission based on its own measured channel SNR / SINR information and uplink data decoding information.

[0326] The signal transmission device may include a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor may include a general-purpose processor, a special-purpose processor, such as a Central Processing Unit (CPU), a microprocessor, a Digital Signal Processor (DSP), an Artificial Intelligence (AI) processor, a Graphics Processing Unit (GPU), an Application Specific Integrated Circuit (ASIC), a Network Processor (NP), a Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules may be implemented by a communication interface, which may include one or more of the following: a transceiver, pins, circuits, a bus, and a radio frequency unit.

[0327] Specifically, referring to Figure 13, when the combined transmission device is a terminal or a component within a terminal, or when the combined transmission device is a network-side device or a component within a network-side device, the combined transmission device 1300 includes:

[0328] Processing module 1301 is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits.

[0329] The transmitting module 1302 is used to transmit the modulated data.

[0330] Optionally, the data set includes one of the following:

[0331] Transport block (TB), sub-TB, code block group (CBG).

[0332] Optionally, the processing module 1301 is further configured to determine the coding and modulation information of the M data groups, wherein the coding and modulation information includes at least one of the following:

[0333] Modulation and coding strategy (MCS) index for each data group;

[0334] The modulation scheme for each data group;

[0335] The modulation order of each data group;

[0336] Bitrate per data group;

[0337] The rate of each data group matches the number of output bits;

[0338] Size of each data group;

[0339] MCS form information;

[0340] Transmit resource information.

[0341] Optionally, the M data groups include a first data group and a second data group, wherein the modulation orders of the first data group and the second data group are different:

[0342] The code rate of the second data group is the code rate when the second data group uses the same modulation order as the first data group.

[0343] Optionally, the code rate of the second data group when using the same modulation order as the first data group includes one of the following:

[0344] The code rate of the second data group when it adopts the same modulation order as the first data group is calculated based on the modulation order of the first data group, the modulation order of the second data group, and the code rate associated with the MCS index of the second data group.

[0345] The code rate of the second data group when using the same modulation order as the first data group is calculated based on the code rate associated with the MCS index of the first data group, the spectral efficiency associated with the MCS index of the first data group, and the spectral efficiency associated with the MCS index of the second data group.

[0346] Optionally, the M data groups include a third data group, and the number of rate-matched output bits of the third data group is calculated based on the number of resource units, transmission layers, and modulation order of the third data group.

[0347] Optionally, the processing module 1301 is used to determine the MCS index of each data group based on the downlink control information (DCI);

[0348] The DCI indicates the MCS index for each data group;

[0349] Alternatively, the DCI indicates the MCS index of one of the M data groups, and indicates the difference between the MCS index of the remaining data groups and the MCS index of the one data group.

[0350] Optionally, the DCI includes M MCS fields, wherein the M MCS fields are used to indicate the MCS indexes of the M data groups, or one of the M MCS fields indicates the MCS index of a data group, and the remaining MCS fields are used to indicate the difference between the MCS indexes of the remaining data groups and the MCS index of the data group.

[0351] Optionally, the transmission resource information includes at least one of the following:

[0352] Number of resource units, number of transport layers.

[0353] Optionally, the processing module 1301 is used to determine the coding and modulation information of the M data groups based on at least one of channel information, decoding information, and received signaling.

[0354] Optionally, the channel information includes at least one of the following:

[0355] Channel Quality Indicator (CQI), Signal-to-Interference-plus-Noise Ratio (SINR), Signal-to-Noise Ratio (SNR);

[0356] The decoded information includes at least one of the following:

[0357] Decoding result information, actual bit error rate, actual block error rate, target bit error rate, target block error rate.

[0358] Optionally, the device further includes:

[0359] A receiving module is configured to receive at least one of the channel information, the decoding information, and the received signaling.

[0360] Optionally, the processing module 1301 is further configured to determine the value of M, where M represents the number of data groups to be transmitted jointly.

[0361] Optionally, the number of data groups is the number of data groups corresponding to a single codeword, and the processing module 1301 is used for the following:

[0362] The value of M is determined based on the number of individual codeword data groups.

[0363] The value of M is determined based on at least one of the number of data groups scheduled by DCI and the number of codewords scheduled by DCI.

[0364] Optionally, the sending module 1302 is further configured to send or receive the association information of the M data groups; or,

[0365] The device further includes a receiving module, which is used to receive the association information of the M data groups;

[0366] The associated information includes at least one of the following:

[0367] The number of data groups in the M data groups;

[0368] The encoded modulation information of the M data groups.

[0369] Optionally, the processing module 1301 is used for at least one of the following:

[0370] When the data group includes a TB or a sub-TB, the M TBs or sub-TBs are divided into code blocks, wherein the M TBs are divided into code blocks of the same number, or the M sub-TBs are divided into code blocks of the same number.

[0371] The M data groups are encoded using the same encoding parameters;

[0372] The rate-matched output code blocks of the M data groups are jointly interleaved in rows and columns.

[0373] Optionally, the encoding parameters include at least one of the following:

[0374] Encoding base map (BG), boost factor, parity check matrix, generator matrix, encoder input block length, encoder output block length, and master code rate.

[0375] Optionally, the interleaver depth of the row and column interleaving is Q. m The number of columns in the interleaving of the rows and columns is equal to J. r / Q m , wherein, the Q m The average modulation order of the M data groups, or the Q... m J represents the modulation order of one of the M data groups. r This represents the sum of the rate-matched output code block lengths of the M data groups.

[0376] Optionally, in the row-column interleaving, the rate-matched output code blocks of the M data groups are fed into the interleaver in turn according to the MCS index or code rate; or

[0377] In the row-column interleaving, the system bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate, and the parity bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate.

[0378] The aforementioned combined transmission device can improve data transmission performance.

[0379] The signal joint transmission device provided in this application embodiment can realize the various processes implemented in the method embodiment of FIG8 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0380] As shown in Figure 14, this application embodiment also provides a communication device 1400, including a processor 1401 and a memory 1402. The memory 1402 stores a program or instructions that can be executed on the processor 1401. For example, when the communication device 1400 is a first device, when the program or instructions are executed by the processor 1401, they implement the various steps of the above-described joint transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0381] This application also provides a device including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG8. This device embodiment corresponds to the above-described joint transmission method embodiment, and all implementation processes and methods of the above method embodiments can be applied to this device embodiment and can achieve the same technical effect.

[0382] This application also provides a device including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG8. This device embodiment corresponds to the above-described joint transmission method embodiment, and all implementation processes and methods of the above method embodiments can be applied to this device embodiment and can achieve the same technical effect. The device may be the joint transmission device shown in FIG13. Specifically, FIG15 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0383] The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0384] Those skilled in the art will understand that terminal 1500 may also include a power supply (such as a battery) for powering various components. The power supply may be logically connected to processor 1510 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 15 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0385] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processor 15041 and a microphone 15042. The graphics processor 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes at least one of a touch panel 15071 and other input terminals 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input terminals 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0386] In this embodiment, after receiving downlink data from the network-side terminal, the radio frequency unit 1501 can transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network-side terminal. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0387] The memory 1509 can be used to store software programs or instructions, as well as various data. The memory 1509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1509 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0388] Processor 1510 may include one or more processing units; optionally, processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0389] This embodiment uses the first device as the terminal for illustration.

[0390] The processor 1510 is used by the first device to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits.

[0391] Radio frequency unit 1501 is used to transmit the modulated data.

[0392] Optionally, the data set includes one of the following:

[0393] Transport block (TB), sub-TB, code block group (CBG).

[0394] Optionally, the processor 1510 is further configured to determine the coding and modulation information of the M data groups, the coding and modulation information including at least one of the following:

[0395] Modulation and coding strategy (MCS) index for each data group;

[0396] The modulation scheme for each data group;

[0397] The modulation order of each data group;

[0398] Bitrate per data group;

[0399] The rate of each data group matches the number of output bits;

[0400] Size of each data group;

[0401] MCS form information;

[0402] Transmit resource information.

[0403] Optionally, the M data groups include a first data group and a second data group, wherein the modulation orders of the first data group and the second data group are different:

[0404] The code rate of the second data group is the code rate when the second data group uses the same modulation order as the first data group.

[0405] Optionally, the code rate of the second data group when using the same modulation order as the first data group includes one of the following:

[0406] The code rate of the second data group when it adopts the same modulation order as the first data group is calculated based on the modulation order of the first data group, the modulation order of the second data group, and the code rate associated with the MCS index of the second data group.

[0407] The code rate of the second data group when using the same modulation order as the first data group is calculated based on the code rate associated with the MCS index of the first data group, the spectral efficiency associated with the MCS index of the first data group, and the spectral efficiency associated with the MCS index of the second data group.

[0408] Optionally, the M data groups include a third data group, and the number of rate-matched output bits of the third data group is calculated based on the number of resource units, transmission layers, and modulation order of the third data group.

[0409] Optionally, the processor 1510 is used to determine the MCS index for each data group based on the downlink control information (DCI);

[0410] The DCI indicates the MCS index for each data group;

[0411] Alternatively, the DCI indicates the MCS index of one of the M data groups, and indicates the difference between the MCS index of the remaining data groups and the MCS index of the one data group.

[0412] Optionally, the DCI includes M MCS fields, wherein the M MCS fields are used to indicate the MCS indexes of the M data groups, or one of the M MCS fields indicates the MCS index of a data group, and the remaining MCS fields are used to indicate the difference between the MCS indexes of the remaining data groups and the MCS index of the data group.

[0413] Optionally, the transmission resource information includes at least one of the following:

[0414] Number of resource units, number of transport layers.

[0415] Optionally, determining the coding and modulation information of the M data groups includes:

[0416] The coding and modulation information of the M data groups is determined based on at least one of the channel information, decoding information, and received signaling.

[0417] Optionally, the channel information includes at least one of the following:

[0418] Channel Quality Indicator (CQI), Signal-to-Interference-plus-Noise Ratio (SINR), Signal-to-Noise Ratio (SNR);

[0419] The decoded information includes at least one of the following:

[0420] Decoding result information, actual bit error rate, actual block error rate, target bit error rate, target block error rate.

[0421] Optionally, the radio frequency unit 1501 is also used for:

[0422] Receive at least one of the channel information, the decoding information, and the received signaling.

[0423] Optionally, the processor 1510 is further configured to determine the value of M, where M represents the number of data groups to be transmitted jointly.

[0424] Optionally, the number of data groups is the number of data groups corresponding to a single codeword, and determining the value of M includes the following:

[0425] The value of M is determined based on the number of individual codeword data groups.

[0426] The value of M is determined based on at least one of the number of data groups scheduled by DCI and the number of codewords scheduled by DCI.

[0427] Optionally, the radio frequency unit 1501 is further configured to transmit or receive association information of the M data groups, the association information including at least one of the following:

[0428] The number of data groups in the M data groups;

[0429] The encoded modulation information of the M data groups.

[0430] Optionally, the encoding and modulation of the M data groups includes at least one of the following:

[0431] When the data group includes a TB or a sub-TB, the M TBs or sub-TBs are divided into code blocks, wherein the M TBs are divided into code blocks of the same number, or the M sub-TBs are divided into code blocks of the same number.

[0432] The M data groups are encoded using the same encoding parameters;

[0433] The rate-matched output code blocks of the M data groups are jointly interleaved in rows and columns.

[0434] Optionally, the encoding parameters include at least one of the following:

[0435] Encoding base map (BG), boost factor, parity check matrix, generator matrix, encoder input block length, encoder output block length, and master code rate.

[0436] Optionally, the interleaver depth of the row and column interleaving is Q. m The number of columns in the interleaving of the rows and columns is equal to J. r / Q m , wherein, the Q m The average modulation order of the M data groups, or the Q... m J represents the modulation order of one of the M data groups.r This represents the sum of the rate-matched output code block lengths of the M data groups.

[0437] Optionally, in the row-column interleaving, the rate-matched output code blocks of the M data groups are fed into the interleaver in turn according to the MCS index or code rate; or

[0438] In the row-column interleaving, the system bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate, and the parity bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate.

[0439] The aforementioned terminals can improve data transmission performance.

[0440] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the joint transmission method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0441] This application also provides a device including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG8. This device embodiment corresponds to the above-described joint transmission method embodiment, and all implementation processes and methods of the above method embodiments can be applied to this device embodiment and can achieve the same technical effect.

[0442] Specifically, this application embodiment also provides a network-side device, which can be the combined transmission device shown in FIG13. As shown in FIG16, the device 1600 includes: an antenna 1601, a radio frequency device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is connected to the radio frequency device 1602. In the uplink direction, the radio frequency device 1602 receives information through the antenna 1601 and sends the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be transmitted and sends it to the radio frequency device 1602, which processes the received information and then transmits it through the antenna 1601.

[0443] The methods executed by the device in the above embodiments can be implemented in the baseband device 1603, which includes a baseband processor.

[0444] The baseband device 1603 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG16. One of the chips is, for example, a baseband processor, which is connected to the memory 1605 via a bus interface to call the program in the memory 1605 to execute the network device operation shown in the above method embodiment.

[0445] The device may also include a network interface 1606, such as a Common Public Radio Interface (CPRI).

[0446] Specifically, the device 1600 in this application embodiment further includes: instructions or programs stored in memory 1605 and executable on processor 1604. Processor 1604 calls the instructions or programs in memory 1605 to execute the methods executed by each module shown in FIG13 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0447] This embodiment uses the first device as a network-side device for illustration.

[0448] The processor 1604 is used by the first device to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits.

[0449] Radio frequency device 1602 is used to transmit the modulated data.

[0450] Optionally, the data set includes one of the following:

[0451] Transport block (TB), sub-TB, code block group (CBG).

[0452] Optionally, the processor 1604 is further configured to determine the coding and modulation information of the M data groups, the coding and modulation information including at least one of the following:

[0453] Modulation and coding strategy (MCS) index for each data group;

[0454] The modulation scheme for each data group;

[0455] The modulation order of each data group;

[0456] Bitrate per data group;

[0457] The rate of each data group matches the number of output bits;

[0458] Size of each data group;

[0459] MCS form information;

[0460] Transmit resource information.

[0461] Optionally, the M data groups include a first data group and a second data group, wherein the modulation orders of the first data group and the second data group are different:

[0462] The code rate of the second data group is the code rate when the second data group uses the same modulation order as the first data group.

[0463] Optionally, the code rate of the second data group when using the same modulation order as the first data group includes one of the following:

[0464] The code rate of the second data group when it adopts the same modulation order as the first data group is calculated based on the modulation order of the first data group, the modulation order of the second data group, and the code rate associated with the MCS index of the second data group.

[0465] The code rate of the second data group when using the same modulation order as the first data group is calculated based on the code rate associated with the MCS index of the first data group, the spectral efficiency associated with the MCS index of the first data group, and the spectral efficiency associated with the MCS index of the second data group.

[0466] Optionally, the M data groups include a third data group, and the number of rate-matched output bits of the third data group is calculated based on the number of resource units, transmission layers, and modulation order of the third data group.

[0467] Optionally, the processor 1604 is used to determine the MCS index for each data group based on the downlink control information (DCI);

[0468] The DCI indicates the MCS index for each data group;

[0469] Alternatively, the DCI indicates the MCS index of one of the M data groups, and indicates the difference between the MCS index of the remaining data groups and the MCS index of the one data group.

[0470] Optionally, the DCI includes M MCS fields, wherein the M MCS fields are used to indicate the MCS indexes of the M data groups, or one of the M MCS fields indicates the MCS index of a data group, and the remaining MCS fields are used to indicate the difference between the MCS indexes of the remaining data groups and the MCS index of the data group.

[0471] Optionally, the transmission resource information includes at least one of the following:

[0472] Number of resource units, number of transport layers.

[0473] Optionally, determining the coding and modulation information of the M data groups includes:

[0474] The coding and modulation information of the M data groups is determined based on at least one of the channel information, decoding information, and received signaling.

[0475] Optionally, the channel information includes at least one of the following:

[0476] Channel Quality Indicator (CQI), Signal-to-Interference-plus-Noise Ratio (SINR), Signal-to-Noise Ratio (SNR);

[0477] The decoded information includes at least one of the following:

[0478] Decoding result information, actual bit error rate, actual block error rate, target bit error rate, target block error rate.

[0479] Optionally, the radio frequency device 1602 is further configured to receive at least one of the channel information, the decoding information, and the received signaling.

[0480] Optionally, the processor 1604 is further configured to determine the value of M, where M represents the number of data groups to be transmitted jointly.

[0481] Optionally, the number of data groups is the number of data groups corresponding to a single codeword, and determining the value of M includes the following:

[0482] The value of M is determined based on the number of individual codeword data groups.

[0483] The value of M is determined based on at least one of the number of data groups scheduled by DCI and the number of codewords scheduled by DCI.

[0484] Optionally, the radio frequency device 1602 is further configured to transmit or receive association information of the M data groups, the association information including at least one of the following:

[0485] The number of data groups in the M data groups;

[0486] The encoded modulation information of the M data groups.

[0487] Optionally, the encoding and modulation of the M data groups includes at least one of the following:

[0488] When the data group includes a TB or a sub-TB, the M TBs or sub-TBs are divided into code blocks, wherein the M TBs are divided into code blocks of the same number, or the M sub-TBs are divided into code blocks of the same number.

[0489] The M data groups are encoded using the same encoding parameters;

[0490] The rate-matched output code blocks of the M data groups are jointly interleaved in rows and columns.

[0491] Optionally, the encoding parameters include at least one of the following:

[0492] Encoding base map (BG), boost factor, parity check matrix, generator matrix, encoder input block length, encoder output block length, and master code rate.

[0493] Optionally, the interleaver depth of the row and column interleaving is Q. m The number of columns in the interleaving of the rows and columns is equal to J. r / Q m , wherein, the Q m The average modulation order of the M data groups, or the Q... m J represents the modulation order of one of the M data groups. r This represents the sum of the rate-matched output code block lengths of the M data groups.

[0494] Optionally, in the row-column interleaving, the rate-matched output code blocks of the M data groups are fed into the interleaver in turn according to the MCS index or code rate; or

[0495] In the row-column interleaving, the system bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate, and the parity bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate.

[0496] The aforementioned equipment can improve data transmission performance.

[0497] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the joint transmission method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0498] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described joint transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0499] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0500] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described joint transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0501] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0502] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described joint transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0503] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0504] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0505] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A joint transmission method, comprising: The first device encodes and modulates M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits; The first device sends the modulated data.

2. The method according to claim 1, wherein, The data set includes the following: Transport block (TB), sub-TB, code block group (CBG).

3. The method according to claim 1 or 2, wherein, The method further includes: The first device determines the coding and modulation information of the M data groups, the coding and modulation information including at least one of the following: Modulation and coding strategy (MCS) index for each data group; The modulation scheme for each data group; The modulation order of each data group; Bitrate per data group; The rate of each data group matches the number of output bits; Size of each data group; MCS form information; Transmit resource information.

4. The method according to claim 3, wherein, The M data groups include a first data group and a second data group, wherein the modulation orders of the first data group and the second data group are different: The code rate of the second data group is the code rate when the second data group uses the same modulation order as the first data group.

5. The method according to claim 4, wherein, The code rate of the second data group when using the same modulation order as the first data group includes the following: The code rate of the second data group when it adopts the same modulation order as the first data group is calculated based on the modulation order of the first data group, the modulation order of the second data group, and the code rate associated with the MCS index of the second data group. The code rate of the second data group when using the same modulation order as the first data group is calculated based on the code rate associated with the MCS index of the first data group, the spectral efficiency associated with the MCS index of the first data group, and the spectral efficiency associated with the MCS index of the second data group.

6. The method according to any one of claims 3 to 5, wherein, The M data groups include a third data group, and the number of rate-matched output bits of the third data group is calculated based on the number of resource units, transmission layers, and modulation order of the third data group.

7. The method according to any one of claims 3 to 6, wherein, The first device determines the MCS index for each data group based on downlink control information (DCI); The DCI indicates the MCS index for each data group; Alternatively, the DCI indicates the MCS index of one of the M data groups, and indicates the difference between the MCS index of the remaining data groups and the MCS index of the one data group.

8. The method according to claim 7, wherein, The DCI includes M MCS fields, wherein the M MCS fields are used to indicate the MCS indexes of the M data groups, or one of the M MCS fields indicates the MCS index of a data group, and the remaining MCS fields are used to indicate the difference between the MCS indexes of the remaining data groups and the MCS index of the data group.

9. The method according to any one of claims 3 to 8, wherein, The transmission resource information includes at least one of the following: Number of resource units, number of transport layers.

10. The method according to any one of claims 3 to 9, wherein, The first device determines the coding and modulation information of the M data groups, including: The first device determines the coding and modulation information of the M data groups based on at least one of channel information, decoding information, and received signaling.

11. The method according to claim 10, wherein, The method further includes: The first device receives at least one of the channel information, the decoding information, and the received signaling.

12. The method according to any one of claims 1 to 11, wherein, The method further includes: The first device determines the value of M, where M represents the number of data groups to be transmitted jointly.

13. The method according to claim 12, wherein, The number of data groups is the number of data groups corresponding to a single codeword, and the first device determines that the value of M includes the following: The first device determines the value of M based on the parameter of the number of individual codeword data groups; The first device determines the value of M based on at least one of the number of data groups scheduled by DCI and the number of codewords scheduled by DCI.

14. The method according to any one of claims 1 to 13, wherein, The method further includes: The first device sends or receives association information for the M data groups, the association information including at least one of the following: The number of data groups in the M data groups; The encoded modulation information of the M data groups.

15. The method according to any one of claims 1 to 14, wherein, The first device encodes and modulates M data groups by at least one of the following: When the data group includes a TB or a sub-TB, the M TBs or sub-TBs are divided into code blocks, wherein the M TBs are divided into code blocks of the same number, or the M sub-TBs are divided into code blocks of the same number. The M data groups are encoded using the same encoding parameters; The rate-matched output code blocks of the M data groups are jointly interleaved in rows and columns.

16. The method according to claim 15, wherein, The encoding parameters include at least one of the following: Encoding base map (BG), boost factor, parity check matrix, generator matrix, encoder input block length, encoder output block length, and master code rate.

17. The method according to claim 15 or 16, wherein, The interleaving depth of the row and column interleaving is Q. m The number of columns in the interleaving of the rows and columns is equal to J. r / Q m , wherein, the Q m The average modulation order of the M data groups, or the Q... m J represents the modulation order of one of the M data groups. r This represents the sum of the rate-matched output code block lengths of the M data groups.

18. The method according to any one of claims 15 to 17, wherein, In the row-column interleaving, the rate-matched output code blocks of the M data groups are fed into the interleaver in turn according to the MCS index or code rate; or In the row-column interleaving, the system bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate, and the parity bits of the rate-matched output code blocks of the M data groups are sent to the interleaver in turn according to the MCS index or code rate.

19. A combined transmission device, comprising: The processing module is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits. A transmitting module is used to transmit the modulated data.

20. The apparatus according to claim 19, wherein, The processing module is further configured to determine the coding and modulation information of the M data groups, wherein the coding and modulation information includes at least one of the following: Modulation and coding strategy (MCS) index for each data group; The modulation scheme for each data group; The modulation order of each data group; Bitrate per data group; The rate of each data group matches the number of output bits; Size of each data group; MCS form information; Transmit resource information.

21. The apparatus according to claim 19 or 20, wherein, The sending module is also used to send or receive the association information of the M data groups; or... The device further includes a receiving module, which is used to receive the association information of the M data groups; The associated information includes at least one of the following: The number of data groups in the M data groups; The encoded modulation information of the M data groups.

22. The apparatus according to any one of claims 19 to 21, wherein, The processing module is used for at least one of the following: When the data group includes a TB or a sub-TB, the M TBs or sub-TBs are divided into code blocks, wherein the M TBs are divided into code blocks of the same number, or the M sub-TBs are divided into code blocks of the same number. The M data groups are encoded using the same encoding parameters; The rate-matched output code blocks of the M data groups are jointly interleaved in rows and columns.

23. An apparatus comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the joint transmission method as claimed in any one of claims 1 to 18.

24. A readable storage medium, wherein, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the joint transmission method as described in any one of claims 1 to 18.

25. A computer program product, wherein, The computer program product is stored in a storage medium, and the computer program product is executed by at least one processor to implement the steps of the joint transmission method as described in any one of claims 1 to 18.

26. A joint transmission apparatus configured to perform the steps of the joint transmission method as claimed in any one of claims 1 to 18.

27. A device comprising a processor and a communication interface, wherein, The processor is used to encode and modulate M data groups to obtain modulated data, where M is an integer greater than 1; wherein, in the modulation, the encoded bits of the M data groups are mapped to the same modulation symbol, and in the same modulation symbol, the encoded bits of the M data groups are respectively mapped to their respective associated modulation bits; the communication interface is used to transmit the modulated data.

28. A chip comprising a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the joint transmission method as described in any one of claims 1 to 18.

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