CN115037423A

CN115037423A - Code block transmission method, device, equipment and readable storage medium

Info

Publication number: CN115037423A
Application number: CN202110239208.9A
Authority: CN
Inventors: 童辉
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-09-09

Abstract

The application discloses a code block transmission method, a code block transmission device, code block transmission equipment and a readable storage medium, which relate to the technical field of communication and aim to improve the robustness of a 5G system to frequency selection interference. The method comprises the following steps: when the number of the code blocks in the transmission block is larger than a first threshold value, performing single-stream transmission on the first code block; wherein the length of the first code block is smaller than the maximum code block length, and the first threshold is an integer greater than or equal to 1. The embodiment of the application can improve the robustness of the 5G system to the frequency selection interference.

Description

Code block transmission method, device, equipment and readable storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a code block transmission method, apparatus, device, and readable storage medium.

Background

In mapping code blocks to RE (Resource Element), the 4G system adopts a frequency-first mapping method, then time (time), and finally layer mapping method. For example, in a 4G system, one code Block (codec unit) includes a maximum of about six thousand information bits, and if a coding rate of 1/2 (ten thousand or more coded bits), single-stream transmission, 64QAM (Quadrature Amplitude Modulation) is used, one code Block occupies about 100 PRBs (Physical Resource blocks), two OFDM (Orthogonal frequency division multiplexing) symbols, that is, in the case of a single stream, a codeword is equal to a maximum bandwidth (100 PRBs, 20MHz) in the frequency domain.

5G has been widely deployed worldwide. The main difference between 5G and 4G is the use of layer first mapping.

There is narrowband interference in 5G systems, such as interference from SSB (Synchronization Signal and PBCH block, Synchronization Signal/physical broadcast channel Signal block) (7.2MHz) and LTE (20 MHz). These interferences are much smaller than the system bandwidth of 5G and are called narrowband interferences. However, since the bandwidth of the code blocks in 5G is smaller than the system bandwidth of 5G, the bandwidth of these interferences is not necessarily much smaller than the bandwidth of the code blocks in 5G (around 40M), and may even be equal. For example, in the scenario of 5G and 4G flower arrangement deployment, 5G often suffers from interference around 40MHz (two LTE carriers). Meanwhile, in 5G, the bandwidth of the code block linearly decreases as the number of streams increases. Thus, in a 5G system, the bandwidth of the narrowband interference is not necessarily much smaller than the bandwidth of the code block, mainly because the narrowband interference is widened (system bandwidth is increased by 5 times) and the code block bandwidth is reduced (decreasing with the number of streams). Since the narrowband interference is actually much wider than 4G, plus a transport block contains more code blocks, 5G is caused to be more sensitive to frequency selective interference.

The performance is reduced in LTE (Long Term Evolution) and NR (New Radio, New air interface) in a flower arrangement deployment, and the reason is that the frequency-selective interference width (40M) is similar to the frequency domain width (40M) of a code block, so that some code blocks may be interfered more seriously. Considering that there are multiple code blocks on multiple symbols, the probability that these code blocks are all correct is very low, and if there is only one code block error, it will cause retransmission of the whole transport block, and therefore cause a significant reduction in transmission rate.

Therefore, it is desirable to provide a code block transmission method to improve the robustness of the 5G system to frequency selective interference.

Disclosure of Invention

The embodiment of the application provides a code block transmission method, a code block transmission device, code block transmission equipment and a readable storage medium, so as to improve the robustness of a 5G system to frequency selection interference.

In a first aspect, an embodiment of the present application provides a code block transmission method, including:

when the number of the code blocks in the transmission block is larger than a first threshold value, performing single-stream transmission on the first code block;

wherein the length of the first code block is smaller than the maximum code block length, and the first threshold is an integer greater than or equal to 1.

Wherein a DMRS (Demodulation Reference Signal) port used for single stream transmission is the same as one DMRS port of the second code block of the transport block;

wherein the length of the second code block is equal to the maximum code block length.

Wherein an MCS (Modulation and coding scheme) of the first code block is the same as the MSC of the second code block.

Wherein the performing single stream transmission for the first code block comprises:

and when the length of the first code block is smaller than a second threshold value, performing single stream transmission on the first code block.

Wherein the method is performed by a terminal; the method further comprises at least one of the following steps:

when a Channel Quality Indicator (CQI) is calculated, the influence of single stream transmission is taken into account;

the impact of single stream transmission is accounted for when determining the size of the transport block.

Wherein the method is performed by a terminal;

the DMRS port used for single stream transmission is preset or obtained through dynamic and/or semi-static signaling of the network device.

Wherein the method is performed by a terminal;

the second threshold is preset or obtained through dynamic and/or semi-static signaling of the network device.

In a second aspect, an embodiment of the present application further provides a code block transmission method, including:

receiving a first code block transmitted through a single stream, wherein the first code block is transmitted through the single stream when the number of code blocks in a transmission block at a transmitting end is greater than a first threshold;

Wherein the method is performed by a network device; the method further comprises at least one of the following steps:

informing a DMRS port used by single-stream transmission through dynamic and/or semi-static signaling;

and notifying a second threshold value through dynamic and/or semi-static signaling, wherein when the length of the first code block is smaller than the second threshold value, the sending end performs single-stream transmission on the first code block.

In a third aspect, an embodiment of the present application further provides a code block transmission apparatus, including:

the transmission module is used for performing single-stream transmission on the first code block when the number of the code blocks in the transmission block is greater than a first threshold value;

Wherein a DMRS port used for single stream transmission is the same as one DMRS port of a second code block of the transport block;

Wherein the MCS of the first code block and the MSC of the second code block are the same.

The transmission module is configured to perform single-stream transmission on the first code block when the length of the first code block is smaller than a second threshold.

Wherein the device is applied to a terminal; the device further comprises: a processing module for performing at least one of the following steps:

when calculating the Channel Quality Indicator (CQI), the influence of single-stream transmission is counted;

Wherein the device is applied to a terminal; the DMRS port used for single stream transmission is preset or obtained through dynamic and/or semi-static signaling of the network device.

Wherein the device is applied to a terminal; the second threshold is preset or obtained through dynamic and/or semi-static signaling of the network device.

In a fourth aspect, an embodiment of the present application further provides a code block transmission apparatus, including:

a receiving module, configured to receive a first code block transmitted via a single stream, and receive the first code block transmitted via the single stream, where the first code block is transmitted via the single stream when the number of code blocks in a transmission block at a transmitting end is greater than a first threshold;

Wherein the device is applied to a network device; the device further comprises: a processing module for performing at least one of the following steps:

and notifying a second threshold value through dynamic and/or semi-static signaling, wherein when the length of the first code block is smaller than the second threshold value, the sending end performs single stream transmission on the first code block.

In a fifth aspect, an embodiment of the present application further provides a code block transmission apparatus, including: a processor and a transceiver;

the processor is configured to: when the number of the code blocks in the transmission block is larger than a first threshold value, performing single-stream transmission on the first code block;

The processor is configured to perform single stream transmission on the first code block when the length of the first code block is smaller than a second threshold.

Wherein the device is applied to a terminal; the processor is further configured to perform at least one of:

when calculating the channel quality indicator CQI, the influence of single stream transmission is counted;

Wherein the device is applied to a terminal; the second threshold is pre-set or obtained through dynamic and/or semi-static signaling by the network device.

In a sixth aspect, an embodiment of the present application further provides a code block transmission apparatus, including: a processor and a transceiver;

the transceiver is to: receiving a first code block transmitted through a single stream, wherein the first code block is transmitted through the single stream when the number of code blocks in a transmission block at a transmitting end is greater than a first threshold;

Wherein the device is applied to a network device; the processor is configured to perform at least one of:

In a seventh aspect, an embodiment of the present application further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor when executing the program implementing the steps in the code block transmission method as described above.

In an eighth aspect, embodiments of the present application further provide a readable storage medium, on which a program is stored, where the program, when executed by a processor, implements the steps in the code block transmission method as described above.

In an embodiment of the present application, when the number of code blocks in a transport block is greater than a first threshold, a single stream transmission is performed on a first code block. Wherein the length of the first code block is smaller than a maximum code block length. By carrying out single-stream transmission on the first code block, the bandwidth occupied by the first code block can be broadened, and the robustness of the 5G system to frequency selective interference can be improved.

Drawings

FIG. 1 is a schematic design diagram of an SSB in a 5G system;

fig. 2 is a schematic diagram of a beam configuration in the prior art;

FIG. 3 is a diagram illustrating interference between base stations in the prior art;

fig. 4 is a diagram illustrating inter-cell interference in the prior art;

fig. 5 is a schematic diagram of resource mapping of code blocks to REs in a 4G system;

fig. 6 is a schematic diagram of resource mapping of code blocks to REs in a 5G system;

fig. 7 is a diagram of code block partitioning in the prior art;

fig. 8 is a flowchart of a code block transmission method provided in an embodiment of the present application;

fig. 9 is a second flowchart of a code block transmission method according to an embodiment of the present application;

fig. 10 is one of the structural diagrams of a code block transmission apparatus provided in an embodiment of the present application;

fig. 11 is a second block diagram of a code block transmission apparatus according to an embodiment of the present application;

fig. 12 is a third block diagram of a code block transmission apparatus according to an embodiment of the present application;

fig. 13 is a fourth block diagram of a code block transmission apparatus according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

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

In the actual deployment of 5G, some problems occur that are not expected in standardization, for example, in the scenario of frequency selective interference (abbreviated as frequency selective interference), the performance of the 5G system is not good. For example, SSB (Synchronization Signal and PBCH block) design in 5G system occupies 20 RBs (Radio Bearer) in frequency domain as shown in fig. 1, each RB has a frequency domain width of 360kHz, that is, the frequency domain width of SSB is 7.2MB and the time domain length is 4 symbols. In current network deployments, as shown in fig. 2, an eight-beam configuration is commonly employed, i.e., eight beams are transmitted in 4 slots (0.5 ms each, two SSBs may be transmitted).

In an actual system, some macro stations use eight beams and some macro stations use two beams (e.g., a 4T4R base station), and no beam is transmitted at this time. Then, as shown in fig. 3, the last six beams of the base station using eight beams may interfere with the traffic of the two-beam base station. Since the system bandwidth of 5G is 100MHz and the bandwidth of SSB is only 7.2MHz, as shown in fig. 4, SSB actually occupies only a small portion of the total bandwidth, and therefore, interference from SSB is expected to have little effect on system performance. However, from the practical test results, the interference of the SSB to the traffic channel is very serious. In some cases, almost all three slots of the last six beams transmitted are misinterpreted, which is not significantly in line with the purpose of the standard design.

Fig. 5 is a schematic diagram of resource mapping from code blocks to REs in a 4G system. Fig. 6 is a schematic diagram of resource mapping from code blocks to REs in a 5G system.

Since frequency-first and then time and finally mapping to stream are adopted in the 4G system, in the case of dual stream, the frequency domain width of the code block is the same as that of single stream (20MHz), and the time domain occupies two OFDM (Orthogonal frequency division multiplexing) symbols. In this case, a single code block can enjoy the maximum frequency diversity gain and be quite robust to narrowband interference (frequency domain interference much smaller than the system bandwidth). However, in the 5G system, since the system bandwidth increases from 20MHz to 100MHz and the mapping manner becomes layer-first and then frequency first, a plurality of code blocks may occur on one OFDM symbol.

For example, a code block in 5G includes about eight thousand information bits, and since layer-first mapping is used, the bit stream is mapped to two different streams and then to frequency, which results in a code block with a smaller frequency width as the number of streams increases. If an encoding rate of 1/2 is used, a code block includes more than about sixteen thousand encoded bits; with the addition of dual stream transmission, 64QAM modulation, one code Block is mapped to 16000/(2 × 6 × 12) ≈ 111 PRBs (Physical Resource Block). Considering a system bandwidth of 5G of 100MHz, 275 PRBs, 2 to 3 code blocks may occur on one OFDM symbol. If a higher MCS and number of streams are used, there may be up to a dozen code blocks on one OFDM symbol.

In 5G systems, the bandwidth of the SSB (7.2MHz) is not much smaller than the bandwidth of the codeblock (e.g., around 20M to 40M). In this case, it is likely that a significant portion of bits in the entire code block receive severe interference, and thus a code block error occurs. In particular, considering that the SSB has eight symbols, that is, eight code blocks are severely interfered, the probability that all of the eight code blocks are correctly decoded is very low. Whereas retransmissions in 5G are calculated in terms of transport blocks, with full bandwidth scheduling, there are about 30 code blocks within a slot, where a NACK is fed back and triggers a retransmission whenever there is a code block error. Thus, in 5G, since the narrowband interference is actually much wider than 4G, plus a transport block contains more code blocks, this makes 5G more sensitive to narrowband interference and prone to errors.

The performance is degraded in LTE and NR puncturing deployments, because the frequency selective interference width (40M) is similar to the frequency domain width (40M) of the code block, and thus some code blocks are subjected to more severe interference. Considering that there are multiple code blocks on multiple symbols, the probability that these code blocks are all correct is very low, and if there is only one code block error, it will cause retransmission of the whole transport block, and therefore cause a significant reduction in transmission rate.

In particular, since the code block is generated by filling information bits one by one in the 5G code word generation method, a small code block (8424 information bits in 5G, which is smaller than the maximum code block length) may be generated individually at the end of the transport block. For example, as shown in FIG. 7, if 380000 information bits need to be encoded at one time, the 5G system will generate the information bits first

If there are several code blocks, each having a length of 8424 information bits and there are 920 information bits left, the remaining bits are grouped into a smaller code block for individual transmission. Therefore, in the case of 5G,most code blocks are of equal length (equal to the maximum length of the code block). However, the last code block is often small and therefore has a small bandwidth, and when the narrowband interference is encountered, the whole code block is easily knocked out.

Based on the above analysis, embodiments of the present application provide a code block transmission method, apparatus, device, and readable storage medium, so as to improve robustness of a 5G system to frequency selective interference. The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

Referring to fig. 8, fig. 8 is a flowchart of a code block transmission method provided in an embodiment of the present application, and as shown in fig. 8, the method includes the following steps:

step 801, when the number of code blocks in a transmission block is greater than a first threshold, performing single stream transmission on a first code block.

Wherein the length of the first code block is smaller than the maximum code block length, and the first threshold is an integer greater than or equal to 1. The first code block may also be referred to as a small code block.

In an embodiment of the present application, the first threshold may take a value of 1. Then, in this case, when the number of code blocks in the transport block is greater than 1, single stream transmission is performed on the first code block. If there is only one code block in a transport block, then the single stream scheduling can be performed directly for this code block without the need for down stream transmission.

Optionally, to avoid a large influence of single stream transmission on the spectrum efficiency, the first threshold may be set to a relatively large value, such as 20. Then, at this time, the terminal may ignore the effect of the single stream transmission of the first code block when feeding back the CQI.

In practical applications, the DMRS port used for single stream transmission is the same as one DMRS port of the second code block of the transport block. Wherein the length of the second code block is equal to the maximum code block length. The second code block may also be referred to as a large code block. The DMRS port used for single stream transmission is predetermined (e.g., specified by a standard, such as the DMRS port with the lowest port number may be used), or obtained through dynamic and/or semi-static signaling of the network device.

Specifically, if the second code block uses dual-stream transmission, the DMRS ports used by the second code block are P0 and P1, and the DMRS ports used by the single-stream transmission may be P0 or P1. That is, in this case, the first code block reuses a stream of the second code block instead of re-occupying other ports outside the ports of the second code block, thereby saving resources.

Optionally, in this embodiment, the MCS of the first code block is the same as the MSC of the second code block. In this way, the network device is not required to inform the MCS for the first code block alone, thereby reducing overhead. From the performance point of view, the MCS of the second code block considers the interference between multiple streams, so that the MCS is lower than that of the single stream, that is, the MCS of the first code block is more conservative than that of the single stream channel, thereby better ensuring the correct reception of the first code block.

In practical applications, when the length of the first code block is smaller than a second threshold, single stream transmission is performed on the first code block. That is, when the number of code blocks in a transport block is greater than a first threshold and the length of the first code block is less than a second threshold, a single stream transmission is performed for the first code block. Wherein the second threshold is preset or obtained through dynamic and/or semi-static signaling of the network device. For example, the second threshold may be set to 3824 information bits.

In the embodiment of the application, the method can be applied to network equipment or a terminal.

If the method is applied to a terminal, the terminal may account for the impact of single stream transmission when calculating CQI. For example, when the length of the first code block is large, the terminal may properly tune up the CQI; otherwise, the CQI is turned down. For another example, when the number of the first code block and the second code block is much different, the terminal may properly adjust up the CQI; otherwise, the CQI is turned down. When the terminal calculates the CQI by taking into account the influence of single stream transmission, the calculated CQI needs to ensure that the uplink and downlink transmission block error rate is less than or equal to 10%. In this way, the terminal can be made to count the influence of single stream transmission and feed back a higher CQI than a CQI fed back without counting the influence of single stream transmission.

In the embodiment of the present application, the terminal may take the influence of single stream transmission into account when determining the size of the transmission block. Single stream transmission occupies more resources than multi-stream transmission given the transport block size, and therefore, in practical applications, the influence of the first code block single stream needs to be calculated to obtain an accurate transport block size.

In addition, in order to further enhance the robustness of the 5G system to frequency selective interference, the terminal can be down-streamed. As to how many streams to reduce to, may depend on the specific implementation. For example, the four stream transmission for the second code block is reduced to the two stream transmission for the first code block. At this time, which two ports the first code block uses for transmission may be set in advance (for example, the two DMRS ports with the lowest port number may be used as specified by a standard), or obtained through dynamic and/or semi-static signaling of the network device.

As can be seen from the above description, in the embodiment of the present application, when the number of code blocks in a transport block is greater than a first threshold, single-stream transmission is performed on a first code block. Wherein the length of the first code block is smaller than a maximum code block length. By carrying out single-stream transmission on the first code block, the bandwidth occupied by the first code block can be broadened, and the robustness of the 5G system to frequency selective interference can be improved.

Referring to fig. 9, fig. 9 is a flowchart of a code block transmission method provided in an embodiment of the present application, and as shown in fig. 9, the method includes the following steps:

step 901, receiving a first code block transmitted through a single stream, where the first code block is transmitted through the single stream when the number of code blocks in a transmission block at a transmitting end is greater than a first threshold;

The embodiment of the application can be applied to network equipment or terminals.

If applied to a network device, the network device may also perform at least one of:

As can be seen from the above description, in the embodiment of the present application, when the number of code blocks in a transport block is greater than a first threshold, single stream transmission is performed on a first code block. Wherein the length of the first code block is smaller than a maximum code block length. By carrying out single-stream transmission on the first code block, the bandwidth occupied by the first code block can be broadened, and the robustness of the 5G system to frequency selective interference can be improved.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminals may be different, for example, in a 5G system, the terminal may be called a User Equipment (UE). A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). A wireless terminal may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminals, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

The network device and the terminal may each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission, and the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

The embodiment of the application also provides a code block transmission device. Referring to fig. 10, fig. 10 is a structural diagram of a code block transmission apparatus provided in an embodiment of the present application. As shown in fig. 10, the code block transmission apparatus 1000 includes:

a transmission module 1001, configured to perform single stream transmission on a first code block when the number of code blocks in a transmission block is greater than a first threshold; wherein the length of the first code block is smaller than the maximum code block length, and the first threshold is an integer greater than or equal to 1.

Optionally, a DMRS port used for single stream transmission is the same as one DMRS port of the second code block of the transport block; wherein the length of the second code block is equal to the maximum code block length.

Optionally, the MCS of the first code block is the same as the MSC of the second code block.

Optionally, the transmission module is configured to perform single stream transmission on the first code block when the length of the first code block is smaller than a second threshold.

The apparatus provided in the embodiment of the present application may perform the method embodiment, and the implementation principle and technical effects are similar, which are not described herein again.

The embodiment of the application also provides a code block transmission device. Referring to fig. 11, fig. 11 is a structural diagram of a code block transmission apparatus provided in an embodiment of the present application. As shown in fig. 11, the code block transmission apparatus 1100 includes:

a receiving module 1101 configured to receive a first code block transmitted via a single stream, receive the first code block transmitted via the single stream, wherein the first code block is transmitted via the single stream when the number of code blocks in a transmission block at a transmitting end is greater than a first threshold;

The apparatus provided in the embodiment of the present application may implement the method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The embodiment of the application also provides a code block transmission device. Referring to fig. 12, fig. 12 is a structural diagram of a code block transmission apparatus provided in an embodiment of the present application. As shown in fig. 12, the code block transmission apparatus includes: a processor 1201 and a transceiver 1202;

the processor 1201 is configured to: when the number of the code blocks in the transmission block is larger than a first threshold value, performing single-stream transmission on the first code block;

The processor 1201 is configured to perform single stream transmission on the first code block when the length of the first code block is smaller than a second threshold.

Wherein the device is applied to a terminal; the processor 1201 is further configured to perform at least one of:

The embodiment of the application also provides a code block transmission device. Referring to fig. 13, fig. 13 is a structural diagram of a code block transmission apparatus provided in an embodiment of the present application. As shown in fig. 13, the code block transmission apparatus includes: a processor 1301 and a transceiver 1302;

the transceiver 1302 is configured to: receiving a first code block transmitted over a single stream, wherein the first code block is transmitted over the single stream when a number of code blocks in a transmission block at a transmitting end is greater than a first threshold;

Wherein the device is applied to a network device; the processor 1301 is configured to perform at least one of the following steps:

An embodiment of the present application further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor when executing the program implementing the steps in the code block transmission method as described above.

The embodiment of the present application further provides a readable storage medium, where a program is stored on the readable storage medium, and when the program is executed by a processor, the program implements the processes of the code block transmission method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the detailed description is omitted here. The readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), Solid State Disk (SSD)), etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With such an understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A code block transmission method, comprising:

2. The method according to claim 1, characterized in that a demodulation reference signal, DMRS, port used for single stream transmission is the same as one DMRS port of the second code block of the transport block;

3. The method of claim 2, wherein a Modulation and Coding Scheme (MCS) of the first code block is the same as the MSC of the second code block.

4. The method of claim 1, wherein the single stream transmission of the first code block comprises:

5. The method of claim 1, wherein the method is performed by a terminal; the method further comprises at least one of the following steps:

6. The method of claim 2, wherein the method is performed by a terminal;

7. The method of claim 4, wherein the method is performed by a terminal;

the second threshold is pre-set or obtained through dynamic and/or semi-static signaling by the network device.

8. A code block transmission method, comprising:

9. The method of claim 8, wherein the method is performed by a network device; the method further comprises at least one of the following steps:

10. A code block transmission apparatus, comprising:

a transmission module, configured to perform single stream transmission on a first code block when the number of code blocks in a transmission block is greater than a first threshold;

11. A code block transmission apparatus, comprising:

12. A code block transmission apparatus, comprising: a processor and a transceiver;

13. A code block transmission apparatus, comprising: a processor and a transceiver;

14. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

the processor, configured to read a program in a memory to implement the steps in the code block transmission method according to any one of claims 1 to 9.

15. A readable storage medium storing a program which when executed by a processor performs the steps in the code block transmission method according to any one of claims 1 to 9.