WO2021102708A1

WO2021102708A1 - Communication method and apparatus

Info

Publication number: WO2021102708A1
Application number: PCT/CN2019/121063
Authority: WO
Inventors: 高宽栋; 颜矛; 黄煌
Original assignee: 华为技术有限公司
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2021-06-03
Also published as: CN114731210B; CN114731210A

Abstract

The present application relates to the technical field of communications. Disclosed are a communication method and apparatus. Remaining bits are used to perform error correction coding to improve the reliability of PDCCH data transmission so as to enhance the coverage range of a PDCCH, and a network device can be used. The method involves: performing error correction coding on data bits to be sent, to generate error correction bits; filling downlink control information with the error correction bits as remaining bits in the downlink control information; and sending the downlink control information to a terminal device, wherein the downlink control information comprises the data bits and the remaining bits.

Description

Communication method and device

Technical field

This application relates to the field of communication technology, and in particular to a communication method and device.

Background technique

With the rapid development of communication technology, the mobile Internet is subverting the traditional business model, providing users with an unprecedented use experience, and affecting all aspects of people. The mobile Internet will promote the further upgrade of human society’s information interaction methods, and provide users with richer business experiences such as augmented reality, virtual reality, ultra-high-definition video, and mobile cloud. This advancement in mobile Internet will surely bring about mobile traffic. Rapid growth. The Internet of Things has expanded the scope of wireless communication services, extending from people-to-people communication to people-to-things, and things-to-things intelligent interconnection, enabling communication technology to penetrate into a wider range of industries and fields. In the future, mobile healthcare, Internet of Vehicles, smart home, industrial control, environmental monitoring, etc. will promote the explosive growth of IoT applications. Hundreds of billions of devices will be connected to the network to realize the true "Internet of Everything". At the same time, massive device connections and diversified Internet of Things services will also bring new challenges to wireless communications.

At present, the development of mobile services has put forward higher requirements for the data transmission efficiency of wireless communication, and requires network equipment to provide greater coverage. In order to improve the efficiency of data transmission, in 5G new radio (NR), the data transmitted through the physical downlink control channel (PDCCH) is channel-encoded using coding methods such as polar codes. However, for the coverage, the coverage enhancement of the PDCCH needs to be further improved, especially the enhancement of the common PDCCH, which is far from the target requirement. Therefore, a design for the coverage enhancement of the PDCCH is required.

Summary of the invention

The present application provides a communication method and device to improve the reliability of PDCCH data transmission, thereby enhancing the coverage of the PDCCH.

In a first aspect, an embodiment of the present application provides a communication method, which includes: performing error correction coding on data bits to be sent to generate error correction bits; the error correction bits are used as the remaining bits in the downlink control information to be filled in the downlink control In the information; sending the downlink control information to a terminal device, where the downlink control information includes the data bits and the remaining bits. In a possible design, the data bits to be sent are data bits in the downlink control information.

In the embodiments of the present application, the described communication method may be implemented by a network device, or may be implemented by a component of the network device, such as a processing chip, a circuit, and other components in the network device. Using the above method, the remaining bits in the downlink control information are used for error correction coding, so that when errors occur in the data bits in the downlink control information sent to the terminal equipment through the PDCCH, the terminal equipment can obtain the error correction through the error correction coding. Bit, error correction and decoding are performed on the erroneous data bits to obtain accurate data bits, which improves the reliability of PDCCH data transmission.

In a possible design, the sending the downlink control information to the terminal device includes: generating CRC bits according to the data bits and the error correction bits, and comparing the data bits, the remaining bits, and the The CRC bit performs downlink channel processing, and sends the radio frequency signal obtained by the downlink channel processing to the terminal device. In the above design, an implementation method for sending the downlink control information to the terminal device is provided when error correction coding is performed on the data bits to generate the error correction bits, which is convenient for selecting the corresponding transmission to the terminal device according to the implementation of the error correction coding The implementation of downlink control information is beneficial to improve user experience.

In a possible design, the error correction coding may adopt any one of Turbo codes, low-density parity-check (LDPC) codes, RS codes, convolutional codes, Hamming codes, etc. . The above-mentioned design facilitates the selection of corresponding error correction codes according to the network environment and communication requirements, and improves the communication quality.

In a possible design, the downlink control information is the downlink control information of the system information block 1SIB1; or the downlink control information of the radio resource control RAR; or the downlink control information of the paging message. In the above design, the confirmation of the downlink control information containing the remaining bits is used to avoid error correction coding of the downlink control information that does not contain the remaining bits, which affects the transmission of the downlink control information that does not contain the remaining bits.

In a possible design, the data bits for error correction coding are part or all of the data bits in the downlink control information. In the above design, it is possible to perform error correction coding on part or all of the data bits, which enriches the content of the data bits for error correction coding, which is conducive to selecting appropriate error correction coding content according to the communication environment and requirements, and is conducive to improving communication Efficiency and stability.

In a possible design, before filling the error correction bits as the remaining bits in the downlink control information into the downlink control information, the method further includes: when it is determined that the length of the error correction bits is greater than that of the error correction bits. When the bit length threshold is set, the error correction bit is punctured; wherein the length of the error correction bit after the puncturing is not greater than the error correction bit length threshold. In the above design, when the length of the error correction bit is greater than the error correction bit length threshold, the error correction bit is punctured, which is beneficial to avoid the situation that the length of the error correction bit is greater than the length of the remaining bits in the downstream control information and cannot be filled. , To ensure the stability of communication.

In a possible design, the method further includes: sending configuration information to the terminal device, where the configuration information includes content information for performing the error correction coding and length information of the error correction bits. In the above-mentioned design, it is advantageous for the terminal device to know the content information of the error correction coding and the length information of the error correction bit, etc., and accurately perform error correction decoding.

In a second aspect, an embodiment of the present application provides a communication method. The method includes: receiving downlink control information sent by a network device; when it is determined that the data bit in the downlink control information is wrong, correcting the data bit according to the error correction bit Perform error correction decoding, wherein the error correction bits are filled in the downlink control information as the remaining bits in the downlink control information.

The communication method described in the embodiments of the present application may be implemented by a terminal device, or may be implemented by a component of the terminal device, such as a processing chip, a circuit, and other components in the terminal device. Using the above method, the remaining bits in the downlink control information are used for error correction coding, so that when errors occur in the data bits in the downlink control information sent by the network device through the PDCCH, the error correction bits obtained through the error correction coding can be used to correct the error. Error correction and decoding are performed on the wrong data bits to obtain accurate data bits, which improves the reliability of PDCCH data transmission.

In a possible design, the receiving the downlink control information sent by the network device includes: receiving the radio frequency signal sent by the network device; performing downlink channel processing on the radio frequency signal to obtain the CRC bit carried in the radio frequency signal And data bits and remaining bits in the downlink control information, where the CRC bits are generated by the network device according to the data bits and the error correction bits. In the above design, it is beneficial to accurately analyze the downlink control information carried by the radio frequency signal from the radio frequency signal sent by the network device.

In a possible design, the determining that the data bit error in the downlink control information includes: determining that the data bit and the error correction bit are not checked according to the CRC bit. In the above design, an implementation method for determining the data bit error in the downlink control information when the network device performs error correction coding according to the data bit to generate the error correction bit is provided, which is beneficial to the implementation method according to the error correction coding adopted by the network device , To determine whether there is an error in the data bit in the downlink control information.

In a possible design, the method further includes: receiving configuration information sent by the network device, where the configuration information includes content information for error correction coding and length information of the error correction bits. In the above design, it is beneficial to know the content information of the error correction coding and the information of the length of the error correction bit, and accurately perform the error correction decoding.

In a third aspect, an embodiment of the present application provides a communication method, which includes: generating CRC bits according to data bits to be sent, performing error correction coding on the data bits and the CRC bits, and generating error correction bits; The error correction bits are filled into the downlink control information as the remaining bits in the downlink control information; the downlink control information is sent to a terminal device, and the downlink control information includes the data bits and the remaining bits.

In the embodiments of the present application, the described communication method may be implemented by a network device, or may be implemented by a component of the network device, such as a processing chip, a circuit, and other components in the network device.

In a possible design, the sending the downlink control information to the terminal device includes: performing downlink channel processing on the data bits, the remaining bits, and the CRC bits, and sending the downlink control information to the terminal device The radio frequency signal obtained by the downlink channel processing.

In a possible design, the error correction coding may adopt any one of Turbo codes, low-density parity-check (LDPC) codes, RS codes, convolutional codes, Hamming codes, etc. .

In a possible design, the downlink control information is the downlink control information of SIB1; or the downlink control information of the radio resource control RAR; or the downlink control information of the paging message.

In a possible design, the data bits for error correction coding are part or all of the data bits in the downlink control information.

In a possible design, before filling the error correction bits as the remaining bits in the downlink control information into the downlink control information, the method further includes: when it is determined that the length of the error correction bits is greater than that of the error correction bits. When the bit length threshold is set, the error correction bit is punctured; wherein the length of the error correction bit after the puncturing is not greater than the error correction bit length threshold.

In a possible design, the method further includes: sending configuration information to the terminal device, where the configuration information includes content information for performing the error correction coding and length information of the error correction bits.

In a fourth aspect, an embodiment of the present application provides a communication method, which includes: receiving downlink control information sent by a network device; when it is determined that the data bit in the downlink control information is wrong, correcting the data bit according to the error correction bit And CRC bits for error correction decoding, wherein the error correction bits are filled in the downlink control information as the remaining bits in the downlink control information, and the CRC bits are the network equipment according to the downlink control information Data bits are generated.

The communication method described in the embodiments of the present application may be implemented by a terminal device, or may be implemented by a component of the terminal device, such as a processing chip, a circuit, and other components in the terminal device.

In a possible design, the receiving the downlink control information sent by the network device includes: receiving the radio frequency signal sent by the network device; performing downlink channel processing on the radio frequency signal to obtain the CRC bit carried in the radio frequency signal And the data bits and remaining bits in the downlink control information.

In a possible design, determining that the data bit error in the downlink control information includes: determining that the data bit check fails according to the CRC bit.

In a possible design, the method further includes: receiving configuration information sent by the network device, where the configuration information includes content information for error correction coding and length information of the error correction bits.

In a fifth aspect, an embodiment of the present application provides a communication device that has the function of implementing the method described in the first aspect or the method described in the third aspect, and the function may be implemented by hardware or executed by hardware The corresponding software implementation. The hardware or software includes one or more modules corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor. The memory is used to store a program or instruction executed by the processor. When the program or instruction is executed by the processor, the device can execute the above-mentioned first aspect. The method or the method described in the third aspect.

In one possible design, the device may be a network device.

In a sixth aspect, an embodiment of the present application provides a communication device that has the function of implementing the method described in the second aspect or the method described in the fourth aspect. The function can be implemented by hardware, or can be executed by hardware. Software implementation. The hardware or software includes one or more modules corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor. The memory is used to store a program or instruction executed by the processor. When the program or instruction is executed by the processor, the device can execute the above-mentioned second aspect.的 method or the method described in the fourth aspect.

In one possible design, the device may be a terminal device.

In a seventh aspect, an embodiment of the present application provides a communication device. The communication device includes a processor. When the processor executes a computer program or instruction in a memory, it is as described in the method described in the first aspect or the third aspect. The method described is executed.

In an eighth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor. When the processor executes a computer program or instruction in a memory, it is as described in the method described in the second aspect or as described in the fourth aspect. The method described is executed.

In a ninth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor and a memory. The memory is used to store a computer-executable program or instruction; the processor is used to execute a computer-executable program stored in the memory. A program or instruction to make the communication device execute the method described in the first aspect or the method described in the third aspect.

In a tenth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor and a memory. The memory is used to store a computer-executable program or instruction; the processor is used to execute a computer-executable program stored in the memory. A program or instruction to make the communication device execute the method described in the second aspect or the method described in the fourth aspect.

In an eleventh aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, a memory, and a transceiver. The transceiver is used to receive signals or send signals; and the memory is used to store programs or Instruction code; the processor is configured to call the program or instruction code from the memory to execute the method described in the first aspect or the method described in the third aspect.

In a twelfth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, a memory, and a transceiver. The transceiver is used to receive signals or send signals; and the memory is used to store programs or Instruction code; the processor is configured to call the program or instruction code from the memory to execute the method described in the second aspect or the method described in the fourth aspect.

In a thirteenth aspect, an embodiment of the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive a program or instruction code and transmit it to the processor; the processor The program or instruction code is executed to execute the method described in the first aspect or the method described in the third aspect.

In a fourteenth aspect, an embodiment of the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive a program or instruction code and transmit it to the processor; the processor Run the program or instruction code to execute the method described in the second aspect or the method described in the fourth aspect.

In a fifteenth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a program or instruction, and when the program or instruction is executed, the method described in the first aspect is Or the method described in the third aspect is implemented.

In a sixteenth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a program or instruction. When the program or instruction is executed, the method described in the second aspect is Or the method described in the fourth aspect is implemented.

In a seventeenth aspect, embodiments of the present application provide a computer program product including instructions, which when executed, enable the method described in the first aspect or the method described in the third aspect to be implemented.

In an eighteenth aspect, embodiments of the present application provide a computer program product including instructions, which when executed, enable the method described in the second aspect or the method described in the fourth aspect to be implemented.

For the technical effects that can be achieved from the third aspect to the eighteenth aspect, please refer to the technical effects that can be achieved in the first or second aspect above, and will not be repeated here.

Description of the drawings

FIG. 1 is a schematic diagram of a communication architecture provided by an embodiment of this application;

FIG. 2 is a schematic diagram of the architecture of a network device and a terminal device provided by an embodiment of the application;

FIG. 3 is a schematic diagram of a communication process provided by an embodiment of this application;

FIG. 4 is a schematic diagram of an error correction coding process provided by an embodiment of the application;

FIG. 5 is a schematic diagram of another error correction coding process provided by an embodiment of this application;

FIG. 6 is a schematic diagram of error correction bit filling according to an embodiment of the application;

FIG. 7 is a schematic diagram of another communication process provided by an embodiment of this application;

FIG. 8 is a schematic block diagram of a network device provided by an embodiment of this application;

FIG. 9 is a schematic block diagram of another network device provided by an embodiment of this application;

FIG. 10 is a schematic block diagram of a terminal device according to an embodiment of the application;

FIG. 11 is a schematic block diagram of another terminal device provided by an embodiment of this application;

FIG. 12 is a schematic structural diagram of a terminal device provided by an embodiment of this application;

FIG. 13 is a schematic structural diagram of a network device provided by an embodiment of this application.

Detailed ways

The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) communication systems, long term evolution-advanced (LTE-A) systems and other communication systems. It can be extended to related cellular systems such as wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), and future communication systems, such as 6G systems. Specifically, the application scenario of the embodiment of the present application may be as shown in FIG. 1, including a network device and a terminal device, and downlink communication is performed between the network device and the terminal device. It should be understood that the foregoing network device may be a multi-beam network device or a single-beam network device; the foregoing terminal device may be a fixed terminal device or a non-fixed terminal device. Qualify.

Before introducing the embodiments of the present application, firstly, some terms in the present application are explained to facilitate the understanding of those skilled in the art.

1) Terminal devices, including devices that provide users with voice and/or data connectivity, such as handheld devices with wireless connection functions, or processing devices connected to wireless modems. The terminal device can communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) , Remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), terminal equipment in the future 5G network, terminal equipment in the future evolved public land mobile network (PLMN) network, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, mobile devices with built-in computers, and so on. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA) and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices introduced above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal equipment. The vehicle-mounted terminal equipment is, for example, also called on-board unit (OBU). ).

In the embodiment of the present application, the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.

2) Network equipment can refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network. The network device may be a node in a radio access network, may also be called a base station, or may be called a radio access network (RAN) node (or device). At present, some examples of network equipment are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), and Node B (Node B). B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc. The network device may also be a network device in a future 5G network or a network device in a future evolved PLMN network, and may also be a wearable device or a vehicle-mounted device. The network device in this application can also be an exciter or a transceiver. In addition, in a network structure, the network device may include a centralized unit (CU) node and a distributed unit (DU) node. The CU implements some of the functions of the gNB, and the DU implements some of the functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions. The DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer.

3) Channel coding is due to interference and fading in wireless communication, and errors may occur during signal transmission. In order to enhance the ability to resist various interferences when data is transmitted in the channel, and improve the reliability of the system, the correction of data is adopted. , Error detection technology (error, error detection coding). The error and error detection coding is the channel coding. At present, channel coding mostly adopts Hamming code type coding method, polar code type coding method or convolutional code. The coding method of the Hamming code means that if the coded data bit is c and the coding matrix is H, then the check data bit cg is generated, where cg=c*H. Send [c, cg] together, and the receiving end decodes according to c, cg. The polar encoding method indicates that the data bit length after encoding is L1, and the data bit length before encoding is L2, then look for L2 positions in the data bits of length L1, and then replace the data bits with the L2 positions , The other positions are 0, and then XOR coding is performed to obtain L1 coded bits. Convolutional code is similar to polar code, but it designs a shift register based on a generator polynomial, and generates encoded data bits based on the shift register.

4) The remaining bits in the downlink control information (DCI). When channel coding the data transmitted by the PDCCH (such as the data bits in the DCI), for data alignment, a large number of bits are reserved in the DCI Bits (remaining bits, also called reserved bits), these bits are set to 0 by default. The following is a description with a specific DCI example, which can be specifically as follows:

In the DCI of SIB1, the remaining bits (reserved bits) are 15 bits (bits). Specifically, SIB1 (system information block 1) in this application is system information block 1 or system information block type 1. The DCI of SIB1 includes 36-43 bits, including 21-28 bits of data bits and 15 bits of remaining bits.

For the DCI of radio resource control (radio resource control, RAR), the remaining bits are 16 bits (reserved bits-16bits). Specifically, the DCI of the RAR (such as the DCI of the random access response Msg2) contains 36-43 bits, including 20-27 bits of data bits and 16 bits of remaining bits.

The DCI of the paging message (Paging) includes the 2-bit short message indicator (short messages indicator–2bits according to Table 7.3.1.2.1-1) in accordance with Table 7.3.1.2.1-1; conforms to the standard [9, TS38 .331] subclause 6.5 of 8-bit short messages (short messages-8bits; according to subclause 6.5 of [9, TS38.331]), where if the DCI of the paging message only carries scheduling information, the 8 of the short message Bit reserved (if only the scheduling information for Paging is carried, this bit field is reserved); it also includes reserved bits 6 bits (reserved bits-6bits).

Referring to Table 7.3.1.2.1-1 (Table 7.3.1.2.1-1), the DCI of the paging message varies according to the short message indicator (short messages indicator), and the remaining bits of the DCI have different situations. (1) When the indication of the short message is 00, the DCI of the paging message only uses 2 bits to transmit information. Specifically, the DCI of the paging message contains 36-43 bits. When the indication of the short message is 00, the data bits are 2bits, the remaining bits are 34-41bits; (2) When the short message indication is 01, the DCI of the paging message only carries scheduling information (only scheduling information for Paging is present in the DCI), specifically, paging The DCI of the message contains 36-43 bits. When the indication of the short message is 01, the data bits are 22-29 bits, and the remaining bits are 14 bits; (3) When the indication of the short message is 10, the DCI only carries 8 bits. Short message (only short information is present in the DCI), specifically, the DCI of the paging message contains 36-43 bits. When the indication of the short message is 10, the remaining bits in the DCI are 26-33 bits and the data bits are 10 bits; (4) When the short message indication is 11, the DCI of the paging message contains scheduling information and short message (both scheduling information for Paging and short information are present in the DCI), specifically, the DCI of the paging message Contains 36-43 bits. When the short message indication is 11, the data bits are 30-37 bits, and the remaining bits are 6 bits.

Table 7.3.1.2.1-1

The purpose of this application is to use the remaining bits in the DCI to perform error correction coding on the data bits in the DCI, to improve the reliability of PDCCH data transmission, and to enhance the coverage of the PDCCH.

The embodiments of the present application will be described in detail below with reference to the drawings. In addition, it needs to be understood that in the embodiments of the present application, the word "exemplary" is used to represent an example, illustration, or illustration. Any embodiment or design solution described as an "example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. Rather, the term example is used to present the concept in a concrete way.

The terms "including" and "having" in the embodiments, claims and drawings of the present application are not exclusive. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, and may also include unlisted steps or modules. The terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship that describes the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship. It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information. And, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the order, timing, priority, or order of multiple objects. Importance. The "plurality" referred to in this application is two or more than two.

In addition, in the embodiments of this application, information, signal, message, and channel can sometimes be used together. It should be noted that, when the difference is not emphasized, the meanings to be expressed are the same. of. "的 (of)", "corresponding (relevant)" and "corresponding (corresponding)" can sometimes be used together. It should be pointed out that the meanings to be expressed are the same when the difference is not emphasized.

The embodiment of the present application takes downlink communication between a terminal device and a network device as an example for description. The architecture of the terminal device and the network device may be as shown in FIG. On the network device side, the network device performs cyclic redundancy check (CRC) processing, channel coding, rate matching, modulation, and mapping transmission on the data to be sent (DCI), and the radio frequency that carries the data The signal is sent to the terminal device; on the terminal device side, the terminal device performs operations such as reception demapping, demodulation, rate matching, channel decoding (channel decoding) and CRC check on the received radio frequency signal to obtain the data carried in the radio frequency signal , To realize the downlink transmission of data from the network equipment side to the terminal equipment side. The following specifically describes the sending and receiving of data from the network device side and the terminal device side.

[Embodiment One]

(Network equipment side)

Fig. 3 is a schematic diagram of a communication process provided by an embodiment of the application, and the process includes:

S301: The network device performs error correction coding on the data bits to be sent to generate error correction bits.

Wherein, the data bits are data bits in DCI.

S302: The network device fills the error correction bits into the DCI as the remaining bits in the DCI.

In the embodiments of the present application, in order to avoid interference to the transmission of DCI that does not contain the remaining bits, optionally, the DCI for error correction coding may be the DCI of SIB1, or the DCI of RAR, or the DCI of paging message, etc. The DCI of the remaining bits. Example: RAR's DCI contains 36-43bits, of which the data bits are 20-27bits and the remaining bits are 16bits. There are 16bits in RAR's DCI that are not occupied by data bits, and there are 16bits of remaining bits, which can correct RAR's DCI Wrong encoding.

Referring to the architecture of the network device shown in Figure 2(A), in this embodiment of the application, the network device may perform error correction coding on the data bits in the DCI before or after the CRC is added. The following description will be given in conjunction with specific implementations.

Manner 1: The network device performs error correction coding on the data bits in the DCI before performing the CRC processing.

(1) When the DCI is the DCI of SIB1, the DCI contains 36-43 bits, the remaining bits in the DCI are 15 bits, and the data bits are 21-28 bits. Referring to Figure 4, the network device performs error correction coding on all or part of the data bits in the DCI to generate error correction bits, and uses part or all of the generated error correction bits as part of the remaining bits in the DCI or All bits are filled into DCI. Then, the network device performs CRC processing on the data bits and the remaining bits (including error correction bits) together to generate CRC bits, such as performing CRC processing on the data bits and the error correction bits filled in the remaining bits to generate CRC bits, and generate CRC bits according to the generated CRC bits add CRC bits to DCI. For example: add CRC bits to DCI (data bits + remaining bits (including error correction bits)). Wherein, filling the error correction bits into the DCI means storing the error correction bits as a field in the DCI (such as the remaining bit field), or replacing part or all of the content of a certain field (such as the remaining bit field) in the DCI.

(2) When DCI is RAR DCI, DCI contains 36-43bits, the remaining bits in DCI are 16bits, and the data bits are 20-27bits. As shown in Figure 4, the network device corrects all or part of the data bits in DCI Error coding generates error correction bits, and fills part or all of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI. Then, the network device performs CRC processing on the data bits and the remaining bits (including error correction bits) together to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

(3) When DCI is the DCI of the paging message, the DCI contains 36-43bits. When the short message indication is 01, the remaining bits in the DCI are 14bits and the data bits are 22-29bits. As shown in Figure 4, the network device pair All or part of the data bits in the DCI are subjected to error correction coding to generate error correction bits, and part or all of the generated error correction bits are filled into the DCI as part or all of the remaining bits in the DCI. Then, the network device performs CRC processing on the data bits and the remaining bits (including error correction bits) together to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

When the short message indicates 10, the remaining bits in the DCI are 26-33 bits, and the data bits are 10 bits. As shown in Figure 4, the network device performs error correction coding on all or part of the data bits in the DCI to generate error correction bits. Part or all of the generated error correction bits are filled into the DCI as part or all of the remaining bits in the DCI. Then, the network device performs CRC processing on the data bits and the remaining bits (including error correction bits) together to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

When the short message indicates 11, the remaining bits in the DCI are 6 bits, and the data bits are 30-37 bits. As shown in Figure 4, the network device performs error correction coding on all or part of the data bits in the DCI to generate error correction bits. Part or all of the generated error correction bits are filled into the DCI as part or all of the remaining bits in the DCI. Then, the network device performs CRC processing on the data bits and error correction bits together to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

When the short message indicates 00, the remaining bits in the DCI are 34-41 bits, and the data bits are 2 bits. As shown in Figure 4, the network device performs error correction coding on all or part of the data bits in the DCI to generate error correction bits. Part or all of the generated error correction bits are filled into the DCI as part or all of the remaining bits in the DCI. Then, the network device performs CRC processing on the data bits and the remaining bits (including error correction bits) together to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

In a possible implementation, when the DCI is the DCI of the paging message, the short message indication carried in the DCI may not participate in the error correction coding, and the terminal device can determine the content of the error correction coding according to the short message indication (the network device responds to the DCI Perform error correction coding before adding CRC processing, only perform error correction coding on the data bits in the DCI). For example: when the short message indication is 10, it indicates that only 8-bit short messages (data bits) carried in the DCI should be coded for error correction; when it is 11, it indicates that the 8-bit short messages (data bits) carried in the DCI and 20-27bits scheduling information (data bits) for error correction coding.

Manner 2: The network device performs error correction coding on the data bits in the DCI after adding CRC processing.

(1) When the DCI is the DCI of SIB1, the DCI contains 36-43 bits, the remaining bits in the DCI are 15 bits, and the data bits are 21-28 bits. As shown in Figure 5, the network device performs CRC on all or part of the data bits in the DCI Process, generate CRC bits, and add CRC bits to DCI according to the generated CRC bits. For example: add CRC bits after DCI (data bits + remaining bits (error correction bits are not filled)). Then, the network device performs error correction coding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the generated error correction bits as part or all of the remaining bits in the DCI into the DCI.

(2) When DCI is RAR DCI, DCI contains 36-43bits, the remaining bits in DCI are 16bits, and the data bits are 20-27bits. As shown in Figure 5, the network device performs CRC on all or part of the data bits in DCI Process, generate CRC bits, and add CRC bits to DCI according to the generated CRC bits. Then, the network device performs error correction coding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the generated error correction bits as part or all of the remaining bits in the DCI into the DCI.

(3) DCI is the DCI of the paging message. The DCI contains 36-43bits. When the short message indicates 01, the remaining bits in the DCI are 14bits and the data bits are 22-29bits. As shown in Figure 5, the network device responds to the DCI All or part of the data bits in CRC are processed to generate CRC bits, and CRC bits are added to DCI according to the generated CRC bits. Then, the network device performs error correction coding on the data bits and CRC bits to generate error correction bits, and fills part or all of the generated error correction bits as part or all of the remaining bits in the DCI into the DCI.

When the short message indicates 10, the remaining bits in the DCI are 26-33 bits, and the data bits are 10 bits. As shown in Figure 5, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and generate CRC bits according to The CRC bits add CRC bits to DCI. Then, the network device performs error correction coding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the generated error correction bits as part or all of the remaining bits in the DCI into the DCI.

When the short message indicates 11, the remaining bits in the DCI are 6 bits, and the data bits are 30-37 bits. As shown in Figure 5, the network device performs CRC processing on all or part of the data bits in the DCI, generates CRC bits, and generates CRC bits according to the The CRC bits add CRC bits to DCI. Then, the network device performs error correction coding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the generated error correction bits as part or all of the remaining bits in the DCI into the DCI.

When the short message indicates 00, the remaining bits in the DCI are 34-41 bits, and the data bits are 2 bits. As shown in Figure 6, the network device performs CRC processing on all or part of the data bits in the DCI, generates CRC bits, and generates CRC bits according to the The CRC bits add CRC bits to DCI. Then, the network device performs error correction coding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the generated error correction bits as part or all of the remaining bits in the DCI into the DCI.

In a possible implementation, when the DCI is the DCI of the paging message, the short message indication carried in the DCI may not participate in the error correction coding, and the terminal device can determine the content of the error correction coding according to the short message indication (the network device responds to the DCI Performing error correction coding, after performing the CRC processing, is to perform error correction coding on the CRC bits and the data bits in the DCI). For example: when the short message indication is 10, it indicates that only 8-bit short messages (data bits) and CRC bits carried in the DCI are coded for error correction; when it is 11, it indicates that the 8-bit short message (data bits) carried in the DCI is Bits) and 20-27bits scheduling information (data bits) and CRC bits for error correction coding.

In the embodiments of this application, the error correction coding can use Turbo codes, low-density parity-check (LDPC) codes, RS codes, convolutional codes (such as tail-biting convolutional codes), Hamming codes, etc. Any one of the coding matrix H needs to be defined if Turbo code or LDPC code is used for error correction coding.

In addition, in order to prevent the length of the generated error correction bits from being greater than the length of the remaining bits in the DCI, the error correction bits cannot be filled as the remaining bits in the DCI. In this embodiment of the application, an error correction bit length threshold may also be set . For example, for all types of DCI, such as: SIB1 DCI, RAR DCI, etc., set a unified error correction bit length threshold, such as 6 bits, 5 bits, etc. Optionally, error correction bit length thresholds can also be set for different types of DCI. For example, the error correction bit length threshold set for SIB1 DCI is 15 bits, the error correction bit length threshold set for RAR DCI is 16 bits, and the error correction bit length threshold set for DCI of RAR is 16 bits. The error correction bit length threshold set by the DCI of the paging message is 6 bits. Further, the error correction bit length threshold can be set separately for the DCI of the paging message indicated by different short messages, for example: for the DCI of the paging message, if the short message indication in the DCI is 01, set the error correction bit length The threshold is 14 bits; for the DCI of the paging message, if the short message indication in the DCI is 10, the error correction bit length threshold is set to 26 bits.

Specifically, before filling the generated error correction bits as the remaining bits in the DCI into the DCI, the network device determines whether the generated error correction bit length is greater than the error correction bit length threshold, and when it is determined that the generated error correction bit length is greater than the error correction bit length When the bit length threshold is set, the generated error correction bits are punctured, where the puncturing is a compression method (mode) that can be used to remove part of the error correction bits. The length of the error correction bit is not greater than the error correction bit length threshold.

When the network device fills the error correction bits into the DCI as the remaining bits in the DCI, if the length of the error correction bits is less than the length of the remaining bits in the DCI, the remaining bits in the DCI are excluded from the error correction bit filling part, and the rest Part is set to 0. Exemplary: As shown in FIG. 6, DCI is RAR DCI, the remaining bits in the DCI are 16 bits, the generated error correction bits are 10 bits, the 10 bits of the remaining bits are filled with the error correction bits, and the remaining 6 bits are set to 0.

In addition, in the embodiment of the present application, the data bits that the network device performs error correction coding in the DCI may be part or all of the data bits in the DCI. For example, for the DCI of the paging message, all or part of the remaining data bits except the short message indication in the data bits in the DCI can be error-corrected coding; of course, the data bits for error-correcting coding in the DCI can also be set The data bit length threshold for selection, such as 10 bits, when the data bit length in DCI is less than or equal to the data bit length threshold, the data bits for error correction coding in DCI are all data bits in DCI; when the data in DCI When the bit length is greater than the data bit length threshold, the data bits subjected to error correction coding in the DCI are the first 10 bits of the data bits in the DCI.

Optionally, in order to facilitate the terminal device to obtain information such as the content of error correction coding for the network device and the length of the error correction bits filled in the DCI, the network device may also send configuration information to the terminal device. The configuration information includes The content or length information of the error correction coding (such as the information of the set data bit length threshold for selecting the data bits for error correction coding in the DCI) and the length information of the error correction bit (such as the error correction bit in the DCI) The length of the bits actually occupied in the remaining bits).

As an example, the configuration information may be carried on a physical broadcast channel (PBCH), SIB1, SIB2, SIB3, media access control element (MAC-CE), DCI , RRC signaling and other system information, sent by the network equipment to the terminal equipment. Of course, the configuration information may also be specified by the standard and written into the network device and the terminal device, or pre-appointed by the network device and the terminal device.

S303: The network device sends the DCI to a terminal device.

In a possible implementation, referring to Figure 2(A), after the network device fills the error correction bits into the DCI as the remaining bits in the DCI, and performs the CRC processing for the DCI, the network device performs the downlink on the DCI Channel processing, where the downlink channel processing includes operations such as channel coding (such as polar coding), rate matching (such as scrambling), modulation, and mapping transmission.

For example, after the network device fills the error correction bits into the DCI as the remaining bits in the DCI, and performs CRC processing for the DCI, the network device performs the data bit, the remaining bits (error correction bit filling), and the CRC The bit performs downlink channel processing such as channel coding, rate matching, modulation, and mapping transmission, and sends the radio frequency signal obtained by the downlink channel processing to the terminal device.

Among them, in the embodiment of the present application, the above-mentioned error correction coding may also be referred to as the first channel coding; the above-mentioned channel coding of the data bits, the remaining bits (error correction bit padding), and the CRC bits may also be referred to as The second channel coding.

(Terminal device side)

FIG. 7 is a schematic diagram of a communication process provided by an embodiment of this application, and the process includes:

S701: The terminal device receives the DCI sent by the network device.

In a possible implementation, referring to the architecture of the terminal device shown in Figure 2(B), after the terminal device receives the radio frequency signal carrying DCI sent by the network device, it performs downlink channel processing on the received radio frequency signal, where The de-downlink channel processing includes operations such as reception demapping, demodulation, rate matching (such as descrambling), channel decoding, etc. After the terminal device performs de-downlink channel processing on the radio frequency signal, the data bits in the DCI and the remaining bits are filled Error correction bits and CRC bits (used to check the data bits in DCI).

The terminal device performs the downlink channel processing on the radio frequency signal to obtain data bits, error correction bits and CRC bits, and then checks the data bits. Optionally, in this embodiment of the present application, the terminal device performs error correction coding on the data bits in the DCI according to the network device before or after the CRC processing is performed. There are also two verification methods, which are combined below. The specific implementation will be described.

Manner 1: According to the CRC bit, the data bit and the error correction bit CRC in the DCI are checked.

Referring to FIG. 4, when the network device performs error correction coding based on the data bits in the DCI to generate error correction bits, and performs CRC processing on the data bits and the error correction bits together to generate CRC bits, that is, the network device responds to the DCI Before performing error correction coding on the data bits in the CRC, the terminal device performs CRC check on the obtained data bits and error correction bits according to the CRC bits obtained from the downlink channel processing. For example, perform CRC processing together with the data bits and error correction bits obtained by processing the downlink channel to generate the CRC bits to be checked. If the CRC bits obtained by the processing of the downlink channel are consistent with the CRC bits to be checked generated by the terminal device, it is determined The data bits and error correction bits obtained by the terminal device are accurate, and the check passes; if they are inconsistent, it is determined that the data bits and error correction bits obtained by the terminal device have errors during transmission and the check fails.

Manner 2: Check the data bits in the DCI according to the CRC bits.

Referring to Figure 5, when the network device performs CRC processing based on the data bits in the DCI to generate CRC bits, and performs error correction coding based on the data bits and CRC bits together to generate error correction bits, that is, when the network device performs CRC processing on the DCI After error correction coding is performed on the data bits after the CRC is added, the terminal device performs CRC check on the obtained data bits according to the CRC bits obtained by the downlink channel processing. For example, perform CRC processing based on the data bits obtained from the downlink channel processing to generate the CRC bits to be checked. If the CRC bits obtained from the downlink channel processing are consistent with the CRC bits to be checked generated by the terminal device, the data obtained by the terminal device is determined If the bits are accurate, the check is passed; if they are inconsistent, it is determined that the data bit obtained by the terminal device has an error during the transmission process and the check fails.

S702: When the terminal device determines that the data bit in the DCI is wrong, the terminal device performs error correction decoding on the data bit in the DCI according to the error correction bit.

Specifically, when the network device performs error correction coding based on the data bits in the DCI, that is, when the network device performs error correction coding on the data bits in the DCI before performing the CRC processing, the terminal device directly performs the error correction coding on the data bits according to the error correction bits. Error correction decoding, realizes error correction of data bits in DCI. When the network device performs CRC processing according to the data bits in the DCI to generate CRC bits, and performs error correction coding together according to the data bits and the CRC bits to generate error correction bits, the network device performs error correction on the data bits in the DCI After the CRC is added to the encoding, the terminal device performs error correction decoding on the CRC bit and the data bit according to the error correction bit, so as to implement error correction on the data bit and the CRC bit in the DCI.

It should be understood that, in the embodiments of this application, the error correction decoding used by the terminal equipment corresponds to the error correction coding method adopted by the network equipment. For example, if the error correction coding method adopted by the network equipment is Turbo encoding, the error correction used by the terminal equipment The decoding method is Turbo decoding.

In a possible implementation, before the terminal device performs error correction decoding on data bits, it performs error correction encoding content or length information and error correction bit length information included in the configuration information (see the description of the first embodiment above). , The repetition will not be repeated), identify the content of error correction coding (that is, the content of error correction decoding) and the error correction bits filled in the remaining bits of the DCI. The configuration information can be sent by the network device to the terminal device. Of course, the configuration information can also be specified by a standard and written into the network device and the terminal device, or pre-appointed by the network device and the terminal device.

Among them, if the data bits that the network device performs error correction coding in the DCI are part of the data bits in the DCI, when the data bits in the DCI are wrong, the terminal device can only perform error correction (error correction) on the part of the data bits that are subjected to the error correction coding. Wrong decoding).

[Embodiment 2]

The foregoing mainly introduces the solution provided by this application from the perspective of the interaction between the network device and the terminal device. It can be understood that, in order to realize the above-mentioned functions, each network element includes a hardware structure and/or software module (or unit) corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the case of using an integrated unit (module), FIG. 8 shows a possible exemplary block diagram of another communication device involved in an embodiment of the present application, and the communication device 800 may exist in the form of software. The apparatus 800 may include: a processing unit 802 and a transceiver unit 803.

In a possible design, the processing unit 802 is used to implement corresponding processing functions. The transceiver unit 803 is used to support communication between the device 800 and other network entities. Optionally, the transceiving unit 803 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the device 800 may further include a storage unit 801 for storing program codes and/or data of the device 800.

The apparatus 800 may be the network device in any of the above embodiments (for example, the network device is the network device in Embodiment 1), or may also be a component such as a chip provided in the network device. The processing unit 802 may support the apparatus 800 to execute the actions of the network device in the above method examples. Alternatively, the processing unit 802 mainly executes the internal actions of the network device in the method example, and the transceiving unit 803 can support the communication between the apparatus 800 and the terminal device.

Specifically, in one embodiment, the processing unit 802 is configured to perform error correction coding on the data bits to be sent to generate error correction bits; the processing unit 802 is also configured to use the error correction bits as the downlink control information The remaining bits of is filled into the downlink control information; the transceiver unit 803 is configured to send the downlink control information to a terminal device, and the downlink control information includes the data bits and the remaining bits.

In a possible design, the processing unit 802 is further configured to generate cyclic redundancy check CRC bits according to the data bits and the error correction bits; the transceiver unit 803 sends the downlink control to the terminal device When information, it is specifically used to perform downlink channel processing on the data bits, the remaining bits, and the CRC bits, and send the radio frequency signal obtained by the downlink channel processing to the terminal device.

In a possible design, the processing unit 802 performs error correction coding on the data bits to be sent, and when generating error correction bits, it is specifically configured to generate CRC bits according to the data bits to be sent, and compare the data bits and the The CRC bits are coded for error correction to generate error correction bits.

In a possible design, when the transceiver unit 803 sends the downlink control information to the terminal device, it is specifically configured to perform downlink channel processing on the data bits, the remaining bits and the CRC bits, and send the downlink control information to the The terminal device sends the radio frequency signal obtained by the downlink channel processing.

In a possible design, the processing unit 802 is further configured to, before filling the error correction bits as the remaining bits in the downlink control information into the downlink control information, when it is determined that the length of the error correction bits is greater than When the error correction bit length threshold is used, the error correction bit is punctured; wherein the length of the error correction bit after the puncturing process is not greater than the error correction bit length threshold.

In a possible design, the transceiver unit 803 is further configured to send configuration information to the terminal device, where the configuration information includes content information for performing the error correction coding and length information of the error correction bits.

As shown in FIG. 9, an embodiment of the present application further provides a network device 900. The network device 900 includes a processor 910, a memory 920, and a transceiver 930.

In a possible design, the memory 920 stores instructions or programs or data, and the memory 920 may be used to implement the functions of the storage unit 801 in the foregoing embodiment. The processor 910 is configured to read instructions or programs or data stored in the memory 920. When the instructions or programs stored in the memory 920 are executed, the processor 910 is configured to execute the operations performed by the processing unit 802 in the foregoing embodiment, and the transceiver 930 is configured to execute the operations performed by the transceiver unit 803 in the foregoing embodiment.

It should be understood that the communication device 800 or the network device 900 of the embodiment of the present application may correspond to the network device in the communication method (FIG. 3) of the embodiment of the present application, and the operation of each module in the communication device 800 or the network device 900 and/ Or the function is to realize the corresponding process of each method in FIG. 3, and for the sake of brevity, it will not be repeated here.

In the case of using an integrated unit (module), FIG. 10 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application, and the device 1000 may exist in the form of software. The apparatus 1000 may include: a processing unit 1002 and a transceiving unit 1003.

In a possible design, the processing unit 1002 is used to implement corresponding processing functions. The transceiver unit 1003 is used to support communication between the device 1000 and other network entities. Optionally, the transceiving unit 1003 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the device 1000 may further include a storage unit 1001 for storing program codes and/or data of the device 1000.

The apparatus 1000 may be the terminal device in any of the foregoing embodiments, or may also be a component such as a chip provided in the terminal device. The processing unit 1002 may support the apparatus 1000 to perform the actions of the terminal device in the above method examples. Alternatively, the processing unit 1002 mainly executes the internal actions of the terminal device in the method example, and the transceiver unit 1003 can support the communication between the apparatus 1000 and the network device.

Specifically, in a possible embodiment, the transceiver unit 1003 is configured to receive the downlink control information sent by the network device; the processing unit 1002 is configured to, when it is determined that the data bit in the downlink control information is wrong, according to the error correction bit Perform error correction decoding on the data bits, where the error correction bits are filled in the downlink control information as the remaining bits in the downlink control information.

In a possible design, when the transceiver unit 1003 receives the downlink control information sent by the network device, it is specifically used to receive the radio frequency signal sent by the network device; the radio frequency signal is subjected to downlink channel processing to obtain the radio frequency signal. The CRC bits carried in the signal and the data bits and remaining bits in the downlink control information.

In a possible design, when the CRC bit is generated according to the data bit and the error correction bit, the processing unit 1002 is specifically configured to perform a comparison between the data bit and the error correction bit according to the CRC bit. When the error correction bit check fails, it is determined that the data bit in the downlink control information is wrong.

In a possible design, when the CRC bit is generated based on the data bit, the processing unit 1002 is specifically configured to determine that the data bit fails to pass the check on the data bit based on the CRC bit The data bit in the downlink control information is wrong.

In a possible design, when the error correction bits are generated according to the data bits and the CRC bits, the processing unit 1002 performs error correction decoding on the data bits according to the error correction bits, specifically And configured to perform error correction decoding on the data bit and the CRC bit according to the error correction bit.

In a possible design, the transceiver unit 1003 is further configured to receive configuration information sent by the network device, where the configuration information includes content information for error correction coding and length information of the error correction bits.

As shown in FIG. 11, an embodiment of the present application further provides a terminal device 1100. The terminal device 1100 includes a processor 1110, a memory 1120, and a transceiver 1130.

In a possible design, the memory 1120 stores instructions or programs or data, and the memory 1120 may be used to implement the functions of the storage unit 1001 in the foregoing embodiment. The processor 1110 is configured to read instructions or programs or data stored in the memory 1120. When the instructions or programs stored in the memory 1120 are executed, the processor 1110 is used to perform the operations performed by the processing unit 1002 in the foregoing embodiment, and the transceiver 1130 is used to perform the operations performed by the transceiving unit 1003 in the foregoing embodiment.

It should be understood that the communication device 1000 or the terminal device 1100 in the embodiment of the present application may correspond to the terminal device in the communication method (FIG. 7) of the embodiment of the present application, and the operation and/or operation of each module in the communication device 1000 or the terminal device 1100 Or the function is to realize the corresponding process of each method in FIG. 7, for the sake of brevity, it will not be repeated here.

The embodiment of the present application also provides a communication device, and the communication device may be a terminal device or a circuit. The communication device can be used to perform the actions performed by the terminal device in the foregoing method embodiments.

When the communication device is a terminal device, FIG. 12 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate. In FIG. 12, the terminal device uses a mobile phone as an example. As shown in Figure 12, the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 12. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit (or communication unit) of the terminal device, and the processor with the processing function can be regarded as the processing unit of the terminal device. As shown in FIG. 12, the terminal device includes a transceiver unit 1210 and a processing unit 1220. The transceiving unit may also be called a transceiver, transceiver, transceiving device, and so on. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 1210 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1210 as the sending unit, that is, the transceiver unit 1210 includes a receiving unit and a sending unit. The transceiver unit may sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiving unit 1210 is used to perform sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 1220 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.

For example, in an implementation manner, the transceiving unit 1210 is used to perform the sending and receiving operations on the terminal device side in S701 of FIG. 7, and/or the transceiving unit 1210 is also used to perform other transceiving operations on the terminal device side in the embodiment of the present application. step. The processing unit 1220 is configured to perform processing operations on the terminal device side in S702 in FIG. 7, and/or the processing unit 1220 is further configured to perform other processing steps on the terminal device side in the embodiment of the present application.

When the communication device is a chip-type device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiving unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

As another form of this embodiment, a computer-readable storage medium is provided with a program or instruction stored thereon, and when the program or instruction is executed, the method on the terminal device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the terminal device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided. The chip includes a processor and is configured to execute a computer program or instruction stored in a memory. When the computer program or instruction is executed, the terminal in the foregoing method embodiment can be executed. The method on the device side.

When the device in this embodiment is a network device, the network device may be as shown in FIG. 13. The device 1300 includes one or more radio frequency units, such as a remote radio unit (RRU) 1310 and one or more basebands. A unit (baseband unit, BBU) (also referred to as a digital unit, DU) 1320. The RRU 1310 may be called a transceiver unit, which corresponds to the transceiver unit 803 in FIG. 8. Optionally, the transceiver unit may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1311和RF unit 1312. The RRU 1310 part is mainly used for receiving and sending radio frequency signals and conversion between radio frequency signals and baseband signals, for example, for sending configuration information to terminal equipment. The 1320 part of the BBU is mainly used to perform baseband processing, control the base station, and so on. The RRU 1310 and the BBU 1320 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 1320 is the control center of the base station, and may also be called a processing module, which may correspond to the processing unit 802 in FIG. 8, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing module) may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 1320 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) of a single access standard, or can support different access standards. Wireless access network (such as LTE network, 5G network or other networks). The BBU 1320 also includes a memory 1321 and a processor 1322. The memory 1321 is used to store necessary instructions and data. The processor 1322 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 1321 and the processor 1322 may serve one or more single boards. In other words, the memory and processor can be set separately for each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

As another form of this embodiment, a computer-readable storage medium is provided with a program or instruction stored thereon, and when the program or instruction is executed, the method on the network device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the network device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided. The chip includes a processor and is configured to execute a computer program or instruction stored in a memory. When the computer program or instruction is executed, it can execute the network in the foregoing method embodiment. The method on the device side.

In the implementation process, each step in the method provided in this embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

It should be noted that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose central processing unit (central processing unit, CPU), general-purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuits (ASIC), field programmable gate array Field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof; it can also be a combination of computing functions, such as a combination of one or more microprocessors, DSP and micro-processing The combination of the device and so on. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It can be understood that the memory or storage unit in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), and synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program or instruction may be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a DVD; it may also be a semiconductor medium, such as a solid state disk (SSD).

The various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.

The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. The software unit can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other storage medium in the art. Exemplarily, the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium. Optionally, the storage medium may also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal device. Optionally, the processor and the storage medium may also be provided in different components in the terminal device.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Although the embodiments of the present application are described in combination with specific features, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the embodiments of the present application. Correspondingly, this specification and drawings are merely exemplary descriptions of the embodiments of the present application defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the embodiments of the present application.

Claims

A communication method, characterized in that it comprises:

Perform error correction coding on the data bits to be sent to generate error correction bits;

Filling the error correction bits in the downlink control information as the remaining bits in the downlink control information;

Sending the downlink control information to a terminal device, where the downlink control information includes the data bits and the remaining bits.
The method according to claim 1, wherein the sending the downlink control information to a terminal device comprises:

Generate cyclic redundancy check CRC bits according to the data bits and the error correction bits, perform downlink channel processing on the data bits, the remaining bits, and the CRC bits, and send the downlink channel to the terminal device Process the resulting radio frequency signal.
The method according to claim 1, wherein the performing error correction coding on data bits to be sent to generate error correction bits comprises:

CRC bits are generated according to the data bits to be sent, and error correction coding is performed on the data bits and the CRC bits to generate error correction bits.
The method according to claim 3, wherein the sending the downlink control information to the terminal device comprises:

Perform downlink channel processing on the data bits, the remaining bits, and the CRC bits, and send the radio frequency signal obtained by the downlink channel processing to the terminal device.
The method according to any one of claims 1-4, wherein the downlink control information is downlink control information of system information block 1SIB1; or downlink control information of radio resource control (RAR); or downlink control of paging messages information.
The method according to any one of claims 1 to 5, wherein the data bits for error correction coding are part or all of the data bits in the downlink control information.
7. The method according to any one of claims 1 to 6, wherein before said filling the error correction bits as the remaining bits in the downlink control information into the downlink control information, the method further comprises:

When it is determined that the length of the error correction bit is greater than the error correction bit length threshold, puncturing the error correction bit is performed; wherein the length of the error correction bit after the puncturing process is not greater than the error correction bit length threshold.
The method according to any one of claims 1-7, wherein the method further comprises:

Sending configuration information to the terminal device, where the configuration information includes content information for performing the error correction coding and length information of the error correction bits.
A communication method, characterized in that it comprises:

Receiving downlink control information sent by network equipment;

When it is determined that the data bit in the downlink control information is wrong, error correction and decoding are performed on the data bit according to the error correction bit, wherein the error correction bit is used as the remaining bits in the downlink control information to fill in the downlink control information. Information.
The method according to claim 9, wherein the receiving downlink control information sent by a network device comprises:

Receive radio frequency signals sent by network equipment;

The radio frequency signal is subjected to downlink channel decompression processing, and the cyclic redundancy check CRC bits carried in the radio frequency signal and the data bits and remaining bits in the downlink control information are obtained.
The method of claim 10, wherein when the CRC bit is generated based on the data bit and the error correction bit, the determining that the data bit error in the downlink control information is wrong comprises:

It is determined that the data bit and the error correction bit are not checked according to the CRC bit.
The method according to claim 10, wherein when the CRC bit is generated according to the data bit, the determining that the data bit in the downlink control information is wrong includes:

It is determined that the data bit check fails according to the CRC bit.
The method according to claim 12, wherein when the error correction bits are generated according to the data bits and the CRC bits, the performing error correction decoding on the data bits according to the error correction bits comprises :

Perform error correction decoding on the data bit and the CRC bit according to the error correction bit.
The method according to any one of claims 9-13, wherein the method further comprises:

Receiving configuration information sent by the network device, where the configuration information includes content information for error correction coding and length information of the error correction bits.
A communication device, characterized in that the device comprises:

The processing unit is configured to perform error correction coding on the data bits to be sent to generate error correction bits;

The processing unit is further configured to fill the error correction bits as the remaining bits in the downlink control information into the downlink control information;

The transceiver unit is configured to send the downlink control information to a terminal device, where the downlink control information includes the data bits and the remaining bits.
15. The communication device according to claim 15, wherein the processing unit is further configured to generate cyclic redundancy check CRC bits according to the data bits and the error correction bits;

When the transceiver unit sends the downlink control information to the terminal device, it is specifically configured to perform downlink channel processing on the data bits, the remaining bits, and the CRC bits, and send the downlink channel processing result to the terminal device Radio frequency signal.
The communication device according to claim 15, wherein the processing unit performs error correction coding on the data bits to be sent, and when generating the error correction bits, it is specifically configured to generate CRC bits according to the data bits to be sent, and perform error correction coding on the data bits to be sent. The data bits and the CRC bits are subjected to error correction coding to generate error correction bits.
The communication device according to claim 17, wherein when the transceiver unit sends the downlink control information to the terminal device, it is specifically configured to perform a downlink channel on the data bits, the remaining bits, and the CRC bits. Processing, sending the radio frequency signal obtained by the downlink channel processing to the terminal device.
The communication device according to any one of claims 15-18, wherein the downlink control information is downlink control information of system information block 1SIB1; or downlink control information of radio resource control RAR; or downlink control information of a paging message Control information.
The communication device according to any one of claims 15-19, wherein the data bits for error correction coding are part or all of the data bits in the downlink control information.
The communication device according to any one of claims 15-20, wherein the processing unit is further configured to: before filling the error correction bits as the remaining bits in the downlink control information into the downlink control information, When it is determined that the length of the error correction bit is greater than the error correction bit length threshold, puncturing the error correction bit is performed; wherein the length of the error correction bit after the puncturing process is not greater than the error correction bit length threshold.
The communication device according to any one of claims 15-21, wherein the transceiver unit is further configured to send configuration information to the terminal device, and the configuration information includes content information for performing the error correction coding And the length information of the error correction bits.
A communication device, characterized in that the device comprises:

The transceiver unit is used to receive the downlink control information sent by the network device;

The processing unit is configured to perform error correction and decoding on the data bits according to the error correction bits when it is determined that the data bits in the downlink control information are wrong, wherein the error correction bits are used as the remaining bits in the downlink control information to fill In the downlink control information.
The communication device according to claim 23, wherein the transceiver unit is specifically configured to receive the radio frequency signal sent by the network device when receiving the downlink control information sent by the network device; and perform downlink channel processing on the radio frequency signal To obtain the cyclic redundancy check CRC bits carried in the radio frequency signal and the data bits and remaining bits in the downlink control information.
The communication device according to claim 24, wherein when the CRC bit is generated based on the data bit and the error correction bit, the processing unit is specifically configured to perform a calculation on the CRC bit according to the CRC bit. When the data bit and the error correction bit fail to pass the check, it is determined that the data bit in the downlink control information is wrong.
The communication device according to claim 24, wherein when the CRC bit is generated based on the data bit, the processing unit is specifically configured to check the data bit to fail according to the CRC bit When determining that the data bit in the downlink control information is wrong.
The communication device according to claim 26, wherein when the error correction bit is generated based on the data bit and the CRC bit, the processing unit corrects the data bit based on the error correction bit During error decoding, it is specifically configured to perform error correction decoding on the data bits and the CRC bits according to the error correction bits.
The communication device according to any one of claims 23-27, wherein the transceiver unit is further configured to receive configuration information sent by the network device, and the configuration information includes content information for error correction coding and The length information of the error correction bit.
A communication device, characterized in that it comprises a memory and a processor;

Memory, used to store computer programs or instructions;

The processor is configured to execute the computer program or instruction stored in the memory, and when the processor executes the computer program or instruction in the memory, it makes the computer program described in any one of claims 1-8 or 9-14 The method is executed.
A communication device, characterized by comprising a processor, a transceiver, and a memory;

The transceiver is used to receive signals or send signals;

The memory is used to store computer programs or instructions;

The processor is configured to execute the computer program or instruction in the memory, and when the processor executes the computer program or instruction in the memory, the processor described in any one of claims 1-8 or 9-14 The method is executed.
A communication device, characterized in that it comprises a processor and an interface circuit,

The interface circuit is used to receive a program or instruction code and transmit it to the processor;

The processor is configured to execute a program or instruction code, and when the processor executes the program or instruction code, the method according to any one of claims 1-8 or 9-14 is executed.
A computer-readable storage medium, characterized in that, the computer-readable storage medium includes a computer program or instruction, and when the computer program or instruction is executed by one or more processors, the implementation is as claimed in claim 1-8 or 9- 14. The method of any one of 14.
A chip, characterized in that the chip includes a processor, configured to execute a computer program or instruction stored in a memory, to implement the method according to any one of claims 1-8 or 9-14.