CN114731210B

CN114731210B - Communication method and device

Info

Publication number: CN114731210B
Application number: CN201980102283.1A
Authority: CN
Inventors: 高宽栋; 颜矛; 黄煌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2023-11-17
Anticipated expiration: 2039-11-26
Also published as: WO2021102708A1; CN114731210A

Abstract

The application relates to the technical field of communication, and discloses a communication method and a device, which utilize residual bits to carry out error correction coding, improve the reliability of PDCCH data transmission so as to enhance the coverage of PDCCH, and can be applied to network equipment, wherein the method comprises the following steps: performing error correction coding on data bits to be transmitted to generate error correction bits; filling the error correction bits into downlink control information as residual bits in the downlink control information; and sending the downlink control information to terminal equipment, wherein the downlink control information comprises the data bit and the residual bit.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus.

Background

With the rapid development of communication technology, the mobile internet is subverting the traditional service mode, so as to provide unprecedented use experience for users, and influence the aspects of people. The mobile internet promotes the further upgrading of the human social information interaction mode, provides the user with more abundant service experiences such as augmented reality, virtual reality, ultra-high definition video, mobile cloud and the like, and the development of the mobile internet is bound to bring about the rapid increase of mobile traffic. The internet of things expands the service range of wireless communication, and extends from person-to-person communication to person-to-object and object-to-object intelligent interconnection, so that the communication technology is permeated into wider industries and fields. In the future, mobile medical treatment, internet of vehicles, intelligent home, industrial control, environmental monitoring and the like will promote explosive growth of Internet of things application, and hundreds of billions of devices will be connected to the network to realize real 'all things' interconnection. Meanwhile, mass equipment connection and diversified internet of things service can bring new challenges to wireless communication.

Currently, the development of mobile services has placed higher demands on the data transmission efficiency of wireless communications, and requires network devices to provide greater coverage. In order to improve data transmission efficiency, in a New Radio (NR) of 5G, data transmitted through a physical downlink control channel (physical downlink control channel, PDCCH) is channel-coded using a coding scheme such as a polar code. However, for coverage, coverage enhancement of PDCCH needs to be further improved, particularly enhancement of common PDCCH, there is a large gap from the target requirement, and thus a design of coverage enhancement of PDCCH is required.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for improving the reliability of PDCCH data transmission, thereby enhancing the coverage of PDCCH.

In a first aspect, an embodiment of the present application provides a communication method, including: performing error correction coding on data bits to be transmitted to generate error correction bits; the error correction bits are used as the residual bits in the downlink control information to be filled in the downlink control information; and sending the downlink control information to terminal equipment, wherein the downlink control information comprises the data bit and the residual bit. In one possible design, the data bits to be sent are data bits in downlink control information.

In the embodiment of the application, the described communication method can be implemented by the network equipment or by a component of the network equipment, such as a processing chip, a circuit and the like in the network equipment. By adopting the method, the residual bits in the downlink control information are utilized to carry out error correction coding, so that when the data bits in the downlink control information sent to the terminal equipment through the PDCCH are wrong, the terminal equipment can carry out error correction decoding on the wrong data bits through the error correction bits obtained by the error correction coding, the accurate data bits are obtained, and the reliability of PDCCH data transmission is improved.

In one 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, performing downlink channel processing on the data bits, the residual bits and the CRC bits, and transmitting radio frequency signals obtained by the downlink channel processing to the terminal equipment. In the above design, an implementation manner for transmitting downlink control information to the terminal device when error correction coding is performed on data bits and error correction bits are generated is provided, so that a corresponding implementation manner for transmitting downlink control information to the terminal device is conveniently selected according to the implementation manner of error correction coding, which is beneficial to improving user experience.

In one possible design, the error correction code may be any one of Turbo codes, low-density parity-check (LDPC) codes, RS codes, convolutional codes, hamming codes, and the like. The design is beneficial to selecting corresponding error correction codes according to network environment and communication requirements, and improves communication quality.

In one possible design, the downlink control information is downlink control information of SIB1 of the system information block 1; or downlink control information of the radio resource control RAR; or downlink control information of paging messages. In the above-described design, the acknowledgement of the downlink control information including the remaining bits is used to avoid the error correction coding of the downlink control information not including the remaining bits, and the transmission of the downlink control information not including the remaining bits is prevented from being affected.

In one possible design, the data bits subjected to error correction coding are part or all of the data bits in the downlink control information. In the design, part or all of the data bits can be subjected to error correction coding, so that the content of the data bits subjected to error correction coding is enriched, the proper content of error correction coding is favorably selected according to the communication environment and the requirements, and the communication efficiency and stability are favorably improved.

In one possible design, before the filling the error correction bits into the downlink control information as remaining bits in the downlink control information, the method further includes: when the length of the error correction bit is determined to be larger than the error correction bit length threshold value, punching the error correction bit; wherein the length of the error correction bit after the punching process 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 punched, which is favorable for avoiding the situation that the length of the error correction bit is greater than the length of the rest bits in the downlink control information and cannot be filled, and ensuring the stability of communication.

In one possible design, the method further comprises: and sending configuration information to the terminal equipment, wherein the configuration information comprises content information for performing the error correction coding and length information of the error correction bits. In the design, the terminal equipment is favorable for knowing the content information of the error correction codes, the length information of the error correction bits and the like, and accurately carrying out error correction decoding.

In a second aspect, an embodiment of the present application provides a communication method, including: receiving downlink control information sent by network equipment; and when the data bit errors in the downlink control information are determined, performing error correction decoding on the data bit according to an error correction bit, wherein the error correction bit is used as the residual bit in the downlink control information to be filled in the downlink control information.

The communication method described in the embodiment of the present application may be implemented by a terminal device, or may be implemented by a component of the terminal device, for example, by a processing chip, a circuit, or other components in the terminal device. By adopting the method, the residual bits in the downlink control information are utilized to carry out error correction coding, so that when the data bits in the downlink control information sent by the network equipment through the PDCCH are wrong, the wrong data bits can be subjected to error correction decoding through the error correction bits obtained by the error correction coding, the accurate data bits are obtained, and the reliability of PDCCH data transmission is improved.

In one possible design, the receiving downlink control information sent by the network device includes: receiving a radio frequency signal sent by network equipment; and performing downlink channel demodulation processing on the radio frequency signal to obtain CRC bits carried in the radio frequency signal and data bits and residual bits in downlink control information, wherein the CRC bits are generated by network equipment according to the data bits and the error correction bits. In the design, the method is beneficial to accurately analyzing the downlink control information carried by the outgoing frequency signal in the radio frequency signal sent by the network equipment.

In one possible design, the determining the data bit error in the downlink control information includes: and determining that the data bit and the error correction bit are not checked according to the CRC bit. In the above design, an implementation manner of determining the data bit error in the downlink control information when the network device performs error correction coding according to the data bit and generates the error correction bit is provided, which is favorable for determining whether the data bit in the downlink control information has an error according to the implementation manner of error correction coding adopted by the network device.

In one possible design, the method further comprises: and receiving configuration information sent by the network equipment, wherein the configuration information comprises content information for error correction coding and length information of the error correction bits. In the design, the information such as the content information of the error correction coding and the length information of the error correction bits can be obtained, and the error correction decoding can be accurately carried out.

In a third aspect, an embodiment of the present application provides a communication method, including: generating CRC bits according to data bits to be transmitted, performing error correction coding on the data bits and the CRC bits, and generating error correction bits; filling the error correction bits into downlink control information as residual bits in the downlink control information; and sending the downlink control information to terminal equipment, wherein the downlink control information comprises the data bit and the residual bit.

In the embodiment of the application, the described communication method can be implemented by the network equipment or by a component of the network equipment, such as a processing chip, a circuit and the like in the network equipment.

In one possible design, the sending the downlink control information to the terminal device includes: and performing downlink channel processing on the data bits, the residual bits and the CRC bits, and transmitting radio frequency signals obtained by the downlink channel processing to the terminal equipment.

In one possible design, the error correction code may be any one of Turbo codes, low-density parity-check (LDPC) codes, RS codes, convolutional codes, hamming codes, and the like.

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

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

In one possible design, before the filling the error correction bits into the downlink control information as remaining bits in the downlink control information, the method further includes: when the length of the error correction bit is determined to be larger than the error correction bit length threshold value, punching the error correction bit; wherein the length of the error correction bit after the punching process is not greater than the error correction bit length threshold.

In one possible design, the method further comprises: and sending configuration information to the terminal equipment, wherein the configuration information comprises 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, including: receiving downlink control information sent by network equipment; and when the data bit errors in the downlink control information are determined, performing error correction decoding on the data bit and a CRC bit according to an error correction bit, wherein the error correction bit is used as the residual bit in the downlink control information to be filled in the downlink control information, and the CRC bit is generated by the network equipment according to the data bit in the downlink control information.

The communication method described in the embodiment of the present application may be implemented by a terminal device, or may be implemented by a component of the terminal device, for example, by a processing chip, a circuit, or other components in the terminal device.

In one possible design, the receiving downlink control information sent by the network device includes: receiving a radio frequency signal sent by network equipment; and carrying out downlink channel demodulation processing on the radio frequency signal to obtain CRC bits carried in the radio frequency signal and data bits and residual bits in downlink control information.

In one possible design, determining a data bit error in the downlink control information includes: and determining that the data bit is not checked according to the CRC bit.

In one possible design, the method further comprises: and receiving configuration information sent by the network equipment, wherein the configuration information comprises 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 communications device, where the communications device has a function for implementing the method described in the first aspect or the method described in the third aspect, where the function may be implemented by hardware, or may be implemented by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions, such as a transceiver unit and a processing unit.

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

In one possible design, the apparatus includes a memory and a processor, where the memory is configured to store a program or instructions executed by the processor, and when the program or instructions are executed by the processor, the apparatus may perform the method according to the first aspect or the method according to the third aspect.

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

In a sixth aspect, an embodiment of the present application provides a communications device, where the communications device has a function of implementing the method described in the second aspect or the method described in the fourth aspect, where the function may be implemented by hardware, or may be implemented by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions, such as a transceiver unit and a processing unit.

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

In one possible design, the apparatus includes a memory and a processor, where the memory is configured to store a program or an instruction executed by the processor, and when the program or the instruction is executed by the processor, the apparatus may perform the method according to the second aspect or the method according to the fourth aspect.

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

In a seventh aspect, an embodiment of the present application provides a communication device comprising a processor, which when executing a computer program or instructions in a memory, performs a method according to the first aspect or a method according to the third aspect.

In an eighth aspect, an embodiment of the present application provides a communication device comprising a processor, which when executing a computer program or instructions in a memory, performs the method according to the second aspect or the method according to the fourth aspect.

In a ninth aspect, embodiments of the present application provide a communication apparatus including a processor and a memory for storing a computer-executable program or instructions; the processor is configured to execute a computer-executable program or instructions stored in the memory to cause the communication device to perform the method according to the first aspect or the method according to the third aspect.

In a tenth aspect, embodiments of the present application provide a communication apparatus including a processor and a memory for storing a computer-executable program or instructions; the processor is configured to execute a computer-executable program or instructions stored in the memory to cause the communication device to perform the method according to the second aspect or the method according to the fourth aspect.

In an eleventh aspect, embodiments of the present application provide a communication device including a processor, a memory, and a transceiver for receiving signals or transmitting signals; the memory is used for storing programs or instruction codes; the processor is configured to invoke the program or instruction code from the memory to perform the method according to the first aspect or the method according to the third aspect.

In a twelfth aspect, embodiments of the present application provide a communication device including a processor, a memory, and a transceiver for receiving signals or transmitting signals; the memory is used for storing programs or instruction codes; the processor is configured to invoke the program or the instruction code from the memory to perform the method according to the second aspect or the method according to the fourth aspect.

In a thirteenth aspect, an embodiment of the present application provides a communication device including a processor and interface circuitry for receiving program or instruction code and transmitting to the processor; the processor runs the program or instruction code to perform the method according to the first aspect or the method according to the third aspect.

In a fourteenth aspect, an embodiment of the present application provides a communication apparatus including a processor and interface circuitry for receiving program or instruction code and transmitting to the processor; the processor runs the program or instruction code to perform the method according to the second aspect or the method according to the fourth aspect.

In a fifteenth aspect, embodiments of the present application provide a computer-readable storage medium storing a program or instructions which, when executed, cause the method of the first aspect or the method of the third aspect to be implemented.

In a sixteenth aspect, an embodiment of the present application provides a computer-readable storage medium storing a program or instructions that, when executed, cause the method of the second aspect or the method of the fourth aspect to be implemented.

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

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

The technical effects achieved by the third aspect to the eighteenth aspect are referred to the technical effects achieved by the first aspect or the second aspect, and the detailed description is not repeated here.

Drawings

Fig. 1 is a schematic diagram of a communication architecture according to an embodiment of the present application;

fig. 2 is a schematic diagram of a network device and a terminal device architecture according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a communication process according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an error correction encoding process according to an embodiment of the present application;

FIG. 5 is a schematic diagram of another error correction encoding process according to an embodiment of the present application;

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

FIG. 7 is a schematic diagram of another communication process according to an embodiment of the present application;

fig. 8 is a schematic block diagram of a network device according to an embodiment of the present application;

fig. 9 is a schematic block diagram of another network device according to an embodiment of the present application;

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

fig. 11 is a schematic block diagram of another terminal device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: the fifth generation (5th generation,5G) communication system, the long term evolution advanced (long term evolution-advanced, LTE-a) system, and other communication systems can also be extended to related cellular systems such as wireless fidelity (wireless fidelity, wiFi), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wimax), and future communication systems such as 6G systems. Specifically, as shown in fig. 1, the scenario in which the embodiment of the present application is applied may include a network device and a terminal device, where downlink communications are performed between the network device and the terminal device. It should be understood that the network device may be a multi-beam network device or a single-beam network device; the terminal device may be a fixed terminal device or a non-fixed terminal device, which is not limited in the embodiment of the present application.

Before describing embodiments of the present application, some of the terms used in the present application will be explained first to facilitate understanding by those skilled in the art.

1) Terminal devices, including devices that provide voice and/or data connectivity to a user, may include, for example, a handheld device having wireless connectivity, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via a radio access network (radio access network, RAN), exchanging voice and/or data with the RAN. The terminal devices may include User Equipment (UE), wireless terminal devices, mobile terminal devices, device-to-device (D2D) terminal devices, V2X terminal devices, machine-to-machine/machine-type communications, M2M/MTC) terminal devices, internet of things (internet of things, ioT) terminal devices, subscriber units (subscriber units), subscriber stations (subscriber station), mobile stations (mobile stations), remote Stations (APs), access terminals (access terminals), user agents (user agents), or terminal devices in future 5G networks, future evolved public land mobile networks (public land mobile network, PLMNs), and the like. For example, mobile telephones (or "cellular" telephones) computers with mobile terminal devices, portable, pocket, hand-held, computer-built mobile devices, and the like may be included. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), and the like. But also limited devices such as devices with lower power consumption, or devices with limited memory capabilities, or devices with limited computing capabilities, etc. Examples include bar codes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning systems (global positioning system, GPS), laser scanners, and other information sensing devices.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device or an intelligent wearable device, and is a generic name for intelligently designing daily wear and developing wearable devices, such as glasses, gloves, watches, clothes, shoes, and the like, by applying wearable technology. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

While the various terminal devices described above, if located on a vehicle (e.g., placed in a vehicle or mounted in a vehicle), may be considered as in-vehicle terminal devices, for example, also referred to as in-vehicle units (OBUs).

In the embodiment of the application, the terminal equipment can also comprise a relay. Or it is understood that all that is capable of data communication with a base station can be seen as a terminal device.

2) A network device may refer to a device in an access network that communicates over the air with wireless terminal devices via one or more cells. The network device may be a node in a radio access network, also referred to as a base station, and also referred to as a radio access network (radio access network, RAN) node (or device). Currently, examples of some network devices are: a gNB, a transmission and reception point (transmission reception point, TRP), an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a wireless fidelity (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 may also be an exciter or a transceiver in the present application. In addition, in one network structure, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers.

3) Channel coding is that, due to interference and fading existing in wireless communication, errors may occur in the signal transmission process, in order to enhance the capability of resisting various interferences when data is transmitted in a channel, improve the reliability of the system, and adopt error correction and detection technology (error correction and detection coding) for the data. Wherein the error correction and detection codes are channel codes. At present, a hamming code type coding mode, a polar code type coding mode or a convolutional code is adopted for channel coding. The coding method of hamming codes refers to that if the coded data bit is c and the coding matrix is H, the check data bit cg is generated, where cg=c×h. And transmitting [ c, cg ] together, and decoding according to c, cg by a receiving end. The polar type coding method indicates that the length of the data bit after coding is L1, and the length of the data bit before coding is L2, then L2 positions are found in the data bit with the length of L1, then the data bit is replaced with the L2 positions, the other positions are 0, and then exclusive-or coding is performed to obtain L1 coded bits. Convolutional codes are similar to polar codes, but they design a shift register based on a generator polynomial from which encoded data bits are generated.

4) When the remaining bits in the downlink control information (down link control information, DCI) are used for channel coding data (such as data bits in DCI) transmitted by PDCCH, a large number of bits (remaining bits, which may also be referred to as reserved bits) are reserved in DCI for data alignment, and these bits are set to 0 by default. The following is described in connection with specific DCI examples, which may be specifically as follows:

DCI for SIB1, the remaining bits (reserved bits) are 15bits (bits). Specifically, SIB1 (system information block 1) in the present application is a DCI of a system information block 1 or a system information block type 1, and the DCI of the sib1 includes 36-43bits, including 21-28bits of data bits and 15bits of remaining bits.

DCI for radio resource control (radio resource control, RAR) has remaining bits of 16bits (reserved bits-16 bits). Specifically, the DCI of the RAR (e.g., the DCI of the random access response Msg 2) includes 36-43bits, including 20-27bits of data bits and 16bits of remaining bits.

DCI of Paging message (Paging) including 2-bit short message indication (short messages indicator-2 bits according to Table 7.3.1.2.1-1) conforming to table 7.3.1.2.1-1; an 8-bit short message (short messages-8bits;according to subclause 6.5 of[9,TS38.331) conforming to sub-clause 6.5 of standard [9, ts38.331], wherein if the DCI of the paging message carries only scheduling information, the 8-bit of the short message is reserved (if only the scheduling information for Paging is carried, this bit field is reserved); also included are reserved bits 6bits (reserved bits-6 bits).

As shown in Table 7.3.1.2.1-1 (Table 7.3.1.2.1-1), DCI for a paging message differs according to a short message instruction (short messages indicator), and the remaining bits of the DCI differ. (1) When the indication of the short message is 00, the DCI of the paging message only uses 2bits to transmit information, specifically, the DCI of the paging message comprises 36-43 bits, when the indication of the short message is 00, the data bits are 2bits, and the rest bits are 34-41bits; (2) When the indication of the short message is 01, the DCI of the paging message only carries scheduling information (only scheduling information for Paging is present in the DCI), specifically, the DCI of the paging message comprises 36-43 bits, and when the indication of the short message is 01, the data bits are 22-29bits, and the rest bits are 14bits; (3) When the indication of the short message is 10, the DCI only carries 8 bits of short message (only short information is present in the DCI), specifically, the DCI of the paging message contains 36-43 bits, and when the indication of the short message is 10, the rest bits in the DCI are 26-33bits, and the data bits are 10bits; (4) When the indication of the short message is 11, the DCI of the paging message carries scheduling information and the 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, and when the indication of the short message is 11, the data bits are 30-37bits, and the rest bits are 6bits.

Table 7.3.1.2.1-1

The application aims to utilize the residual bits in DCI to carry out error correction coding on the data bits in the DCI, thereby improving the reliability of PDCCH data transmission and enhancing the coverage of PDCCH.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. In addition, it should be understood that in embodiments of the present application, the term "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

The terms "comprising" and "having" in the embodiments of the application and in the claims and drawings are not exclusive. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or modules but may include other steps or modules not listed. The terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should be understood that in embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information. And, unless specified to the contrary, references to "first," "second," etc. ordinal words of embodiments of the present application are used for distinguishing between multiple objects and are not used for limiting the order, timing, priority, or importance of the multiple objects. The term "plurality" as used herein refers to two or more.

In addition, in the embodiment of the present application, information (information), signals (signals), messages (channels) may be used in some cases, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized. "of", "corresponding" and "corresponding" are sometimes used in combination, and it should be noted that the meaning of the expression is consistent when the distinction is not emphasized.

The embodiment of the application is illustrated by taking the downlink communication between the terminal device and the network device as an example, and the architecture of the terminal device and the network device can be shown in fig. 2. On the network equipment side, the network equipment performs operations such as cyclic redundancy check (cyclic redundancy check, CRC) processing, channel coding, rate matching, modulation, mapping transmission and the like on Data (DCI) to be transmitted, and transmits radio frequency signals carrying the data to the terminal equipment; at the terminal equipment side, the terminal equipment performs operations such as receiving demapping, demodulating, rate matching, channel decoding (channel decoding), CRC (cyclic redundancy check) and the like on the received radio frequency signals to obtain data carried in the radio frequency signals, and downlink transmission of the data from the network equipment side to the terminal equipment side is realized. The transmission and reception of data from the network device side and the terminal device side, respectively, will be specifically described below.

[ embodiment one ]

(network device side)

Fig. 3 is a schematic diagram of a communication process according to an embodiment of the present application, where the process includes:

s301: the network device performs error correction coding on data bits to be transmitted to generate error correction bits.

Wherein, the data bit is a data bit in DCI.

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

In the embodiment of the present application, in order to avoid interference to the transmission of DCI that does not include the remaining bits, optionally, the DCI subjected to error correction coding may be DCI having the remaining bits, such as DCI of SIB1, DCI of RAR, or DCI of paging message. Example: the DCI of the RAR comprises 36-43bits, wherein the data bits are 20-27bits, the residual bits are 16bits, the 16bits are not occupied by the data bits, and the DCI of the RAR has the residual bits of 16bits, so that the DCI of the RAR can be subjected to error correction coding.

Referring to the architecture of the network device shown in fig. 2 (a), in the embodiment of the present application, error correction encoding may be performed on data bits in DCI by the network device before CRC processing is performed, or after CRC processing is performed, which is described below with reference to a specific implementation manner.

Mode one: the network device performs error correction coding on the data bits in the DCI before performing CRC processing.

(1) When the DCI is the DCI of SIB1, the DCI contains 36-43bits, the rest bits in the DCI are 15bits, and the data bits are 21-28bits. Referring to fig. 4, the network device performs error correction coding on all or part of data bits in the DCI, generates error correction bits, and fills part or all of bits 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 the error correction bits) together, generates CRC bits, e.g., performs CRC processing on the data bits and the error correction bits padded in the remaining bits, generates CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. For example: after adding CRC bits to the DCI (data bits+remaining bits (including error correction bits)). The filling of the error correction bits into the DCI is to present the error correction bits as a field (e.g., a residual bit field) in the DCI or replace some or all of a field (e.g., a residual bit field) in the DCI.

(2) When the DCI is the DCI of the RAR, the DCI includes 36 to 43bits, the remaining bits in the DCI are 16bits, and the data bits are 20 to 27bits, and referring to fig. 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 fills part or all of the bits 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 together with the remaining bits (including error correction bits), generates CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

(3) When the DCI is the DCI of the paging message, 36-43bits are included in the DCI, and when the short message indicates 01, the remaining bits in the DCI are 14bits and the data bits are 22-29bits, and referring to fig. 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 fills part or all of the bits 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 together with the remaining bits (including error correction bits), generates 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 26-33bits and the data bits are 10bits, and referring to fig. 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 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 together with the remaining bits (including error correction bits), generates 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 6bits and the data bits are 30-37bits, and referring to fig. 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 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 together with the error correction bits, generates CRC bits, and adds the CRC bits to the DCI according to the generated CRC bits.

When the short message indicates 00, the remaining bits in the DCI are 34-41bits and the data bits are 2bits, and referring to fig. 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 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 together with the remaining bits (including error correction bits), generates CRC bits, and adds CRC bits to the DCI according to the generated CRC bits.

In one possible implementation, when the DCI is the DCI of the paging message, the short message indication carried in the DCI may not participate in error correction coding, and the terminal device may determine the content of the error correction coding according to the short message indication (the network device performs error correction coding on the DCI and performs error correction coding on only data bits in the DCI before performing CRC processing). For example: when the short message indication is 10, indicating that error correction coding is only carried out on the 8-bit short message (data bit) carried in the DCI; when the data is 11, error correction coding is performed on the 8-bit short message (data bit) and the 20-27-bit scheduling information (data bit) carried in the DCI.

Mode two: the network device performs error correction coding on the data bits in the DCI after performing CRC processing.

(1) When the DCI is the DCI of SIB1, the DCI includes 36-43bits, the remaining bits in the DCI are 15bits, and the data bits are 21-28bits, as shown in fig. 5, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. For example: after adding CRC bits to the DCI (data bits + remaining bits (error correction bits are not padded)). Then, the network device performs error correction encoding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the bits of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI.

(2) When the DCI is the DCI of the RAR, the DCI includes 36-43bits, the remaining bits in the DCI are 16bits, and the data bits are 20-27bits, as shown in fig. 5, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. Then, the network device performs error correction encoding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the bits of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI.

(3) The DCI is the DCI of the paging message, the DCI includes 36-43bits, when the short message indicates 01, the remaining bits in the DCI are 14bits, the data bits are 22-29bits, referring to fig. 5, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. Then, the network device performs error correction encoding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the bits of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI.

When the short message indicates 10, the remaining bits in the DCI are 26-33bits and the data bits are 10bits, and referring to fig. 5, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. Then, the network device performs error correction encoding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the bits of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI.

When the short message indicates 11, the remaining bits in the DCI are 6bits and the data bits are 30-37bits, and referring to fig. 5, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. Then, the network device performs error correction encoding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the bits of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI.

When the short message indicates 00, the remaining bits in the DCI are 34-41bits and the data bits are 2bits, and referring to fig. 6, the network device performs CRC processing on all or part of the data bits in the DCI to generate CRC bits, and adds CRC bits to the DCI according to the generated CRC bits. Then, the network device performs error correction encoding on the data bits and the CRC bits to generate error correction bits, and fills part or all of the bits of the generated error correction bits into the DCI as part or all of the remaining bits in the DCI.

In one possible implementation, when the DCI is the DCI of the paging message, the short message indication carried in the DCI may not participate in error correction coding, and the terminal device may determine the content of the error correction coding according to the short message indication (the network device performs error correction coding on the DCI and performs error correction coding on the CRC bits and the data bits in the DCI after performing CRC processing). For example: when the short message indication is 10, indicating that error correction coding is carried out on the 8-bit short message (data bit) and CRC bit carried in DCI; when the bit is 11, error correction coding is performed on the 8-bit short message (data bit), the 20-27-bit scheduling information (data bit) and the CRC bit carried in the DCI.

In the embodiment of the present application, the error correction coding may use any one of Turbo codes, low-density parity-check (LDPC) codes, RS codes, convolutional codes (e.g., tail-biting convolutional codes), hamming codes, and the like, where the coding matrix H needs to be defined if the error correction coding uses Turbo codes or LDPC codes.

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

Specifically, before filling the generated error correction bits into the DCI as the remaining bits in the DCI, the network device determines whether the generated error correction bit length is greater than an error correction bit length threshold, and when determining that the generated error correction bit length is greater than the error correction bit length threshold, performs puncturing (puncturing) on the generated error correction bits, where the puncturing is a compression method (mode) that may be used to remove some bits in the error correction bits, and the length of the error correction bits after puncturing is not greater than the error correction bit length threshold.

When the network device fills the error correction bits into the DCI as the residual bits in the DCI, if the length of the error correction bits is smaller than the length of the residual bits in the DCI, the rest of the residual bits in the DCI except the part filled with the error correction bits is set to 0. Example: referring to fig. 6, the DCI is a DCI of RAR, the remaining bits in the DCI are 16bits, the generated error correction bits are 10bits, 10bits of the remaining bits are filled with the error correction bits, and the remaining 6bits are set to 0.

In addition, in the embodiment of the present application, the data bits of the network device for error correction coding in the DCI may be part or all of the data bits in the DCI. For example, for DCI of the paging message, error correction coding may be performed on all or part of remaining data bits except for the short message indication in the data bits in the DCI; of course, a data bit length threshold value for selecting the data bits for error correction coding in the DCI may also be set, for example, 10bits, and when the data bit length in the DCI is less than or equal to the data bit length threshold value, the data bits for error correction coding in the DCI are all the data bits in the DCI; when the data bit length in the DCI is greater than the data bit length threshold, the data bits error correction encoded in the DCI are the first 10bits of the data bits in the DCI.

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

As an example, the configuration information may be transmitted to the terminal device by the network device through being carried in any one of a physical broadcast channel (physical broadcast channel, PBCH), SIB1, SIB2, SIB3, a medium access control element (MAC-CE), DCI, RRC signaling, and other system information. Of course, the configuration information may be specified by a standard and written in the network device and the terminal device, or may be agreed in advance by the network device and the terminal device.

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

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

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

In the embodiment of the present application, the error correction coding may also be referred to as first channel coding; the above-described channel encoding of the data bits, the remaining bits (error correction bit padding) and the CRC bits may also be referred to as a second channel encoding.

(terminal equipment side)

Fig. 7 is a schematic diagram of a communication process according to an embodiment of the present application, where the process includes:

s701: and the terminal equipment receives the DCI sent by the network equipment.

In one possible implementation, referring to the architecture of the terminal device shown in fig. 2 (B), after the terminal device receives a radio frequency signal carrying DCI sent by a network device, the terminal device performs a downlink channel decoding process on the received radio frequency signal, where the downlink channel decoding process includes operations of receiving demapping, demodulating, rate matching (such as descrambling), channel decoding, and the like, and after the terminal device performs the downlink channel decoding process on the radio frequency signal, data bits in the DCI, error correction bits filled in remaining bits, and CRC bits (used for checking the data bits in the DCI) are obtained.

And the terminal equipment performs downlink channel demodulation processing on the radio frequency signals to obtain data bits, error correction bits and CRC bits, and then performs verification on the data bits. Optionally, in the embodiment of the present application, the terminal device performs, according to whether the network device performs error correction encoding on the data bits in the DCI before performing CRC processing or after performing CRC processing, two verification manners, which are described below with reference to specific implementation manners.

Mode one: and checking the data bits and the error correction bits CRC in the DCI according to the CRC bits.

Referring to fig. 4, when the network device performs error correction coding according to data bits in DCI, generates error correction bits, and performs CRC processing on the data bits and the error correction bits together, and generates CRC bits, that is, when the network device performs error correction coding on the data bits in DCI before performing CRC processing, the terminal device performs CRC checking on the obtained data bits and error correction bits according to CRC bits obtained by decoding downlink channel processing. If the CRC bits obtained by the downlink channel processing are consistent with the CRC bits to be checked, the data bits and the error correction bits obtained by the terminal equipment are determined to be accurate, and the verification is passed; if the data bits and the error correction bits obtained by the terminal equipment are inconsistent, determining that errors occur in the transmission process, and checking the errors.

Mode two: and checking the data bits in the DCI according to the CRC bits.

Referring to fig. 5, when the network device performs CRC processing according to the data bits in the DCI, generates CRC bits, and performs error correction coding according to the data bits and the CRC bits together, and generates error correction bits, that is, when the network device performs error correction coding on the data bits in the DCI, after performing CRC processing, the terminal device performs CRC checking on the obtained data bits according to the CRC bits obtained by decoding the downlink channel processing. If the CRC bits obtained by the downlink channel processing are consistent with the CRC bits to be checked generated by the terminal equipment, the data bits obtained by the terminal equipment are determined to be accurate and pass the check; if the data bits are inconsistent, determining that the data bits obtained by the terminal equipment are in error in the transmission process, and checking the data bits not to pass.

S702: and when the terminal equipment determines that the data bits in the DCI are wrong, the terminal equipment performs error correction decoding on the data bits in the DCI according to the error correction bits.

Specifically, when the network device performs error correction coding according to 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 CRC processing, the terminal device directly performs error correction decoding on the data bits according to the error correction bits, so as to implement error correction on the data bits in the DCI. When the network equipment performs CRC processing according to the data bits in the DCI to generate CRC bits, and performs error correction coding according to the data bits and the CRC bits, and generates error correction bits, namely when the network equipment performs error correction coding on the data bits in the DCI after performing CRC adding processing, the terminal equipment performs error correction decoding on the CRC bits and the data bits according to the error correction bits, so that error correction on the data bits and the CRC bits in the DCI is realized.

It should be understood that, in the embodiment of the present application, the error correction decoding adopted by the terminal device corresponds to the error correction coding mode adopted by the network device, for example: the error correction coding mode adopted by the network equipment is Turbo coding, and the error correction decoding mode adopted by the terminal equipment is Turbo decoding.

In one possible implementation, before performing error correction decoding on the data bits, the terminal device identifies the content performing error correction encoding (i.e., the content performing error correction decoding) and the error correction bits filled in the remaining bits of the DCI according to the content performing error correction encoding or the length information of the error correction bits and the length information of the error correction bits included in the configuration information (see description of the first embodiment above, and details are not repeated). The configuration information may be sent by the network device to the terminal device, but of course, the configuration information may also be specified by a standard and written into the network device and the terminal device, or may be agreed in advance by the network device and the terminal device.

Wherein, if the data bits of the network device performing error correction coding in the DCI are part of the data bits in the DCI, the terminal device can perform error correction (error correction decoding) only on the part of the data bits performing error correction coding when the data bits in the DCI are wrong.

[ example two ]

The scheme provided by the application is mainly introduced from the interaction point of the network equipment and the terminal equipment. It will be appreciated that, in order to implement the above-described functions, each network element includes corresponding hardware structures and/or software modules (or units) that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In case of integrated units (modules) fig. 8 shows a possible exemplary block diagram of a further communication device according to an embodiment of the application, which communication device 800 may be in the form of software. The apparatus 800 may include: a processing unit 802 and a transceiving unit 803.

In one possible design, processing unit 802 is configured to implement the corresponding processing functions. The transceiver unit 803 is used to support communication of the apparatus 800 with other network entities. Alternatively, the transceiver unit 803 may include a receiving unit and/or a transmitting unit for performing receiving and transmitting operations, respectively. Optionally, the apparatus 800 may further comprise a storage unit 801 for storing program code and/or data of the apparatus 800.

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

Specifically, in one embodiment, the processing unit 802 is configured to perform error correction encoding on data bits to be sent, and generate error correction bits; the processing unit 802 is further configured to fill the error correction bits as remaining bits in the downlink control information into the downlink control information; and a transceiver 803, configured to send the downlink control information to a terminal device, where the downlink control information includes the data bit and the remaining bit.

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 803 is specifically configured to perform downlink channel processing on the data bits, the residual bits, and the CRC bits when sending the downlink control information to a terminal device, and send a radio frequency signal obtained by the downlink channel processing to the terminal device.

In one possible design, the processing unit 802 performs error correction encoding on data bits to be sent, and is specifically configured to generate CRC bits according to the data bits to be sent when generating error correction bits, and perform error correction encoding on the data bits and the CRC bits to generate error correction bits.

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

In one possible design, the processing unit 802 is further configured to perform puncturing processing on the error correction bits when determining that the length of the error correction bits is greater than the error correction bit length threshold before filling the error correction bits as remaining bits in the downlink control information into the downlink control information; wherein the length of the error correction bit after the punching 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, where 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 above 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 perform the operations performed by the processing unit 802 in the above embodiment, and the transceiver 930 is configured to perform the operations performed by the transceiver unit 803 in the above embodiment.

It should be understood that the communication apparatus 800 or the network device 900 according to the embodiment of the present application may correspond to the network device in the communication method (fig. 3) according to the embodiment of the present application, and operations and/or functions of each module in the communication apparatus 800 or the network device 900 are respectively for implementing corresponding flows of each method in fig. 3, which are not described herein for brevity.

In the case of integrated units (modules), fig. 10 shows a possible exemplary block diagram of a communication device according to an embodiment of the application, which device 1000 may be in the form of software. The apparatus 1000 may include: a processing unit 1002, and a transceiving unit 1003.

In one possible design, the processing unit 1002 is configured to implement corresponding processing functions. The transceiving unit 1003 is used to support communication of the device 1000 with other network entities. Alternatively, the transceiving unit 1003 may include a receiving unit and/or a transmitting unit for performing receiving and transmitting operations, respectively. Optionally, the apparatus 1000 may further comprise a storage unit 1001 for storing program code and/or data of the apparatus 1000.

The apparatus 1000 may be the terminal device in any of the above embodiments, or may also be a chip or the like provided in the terminal device. The processing unit 1002 may support the apparatus 1000 to perform the actions of the terminal device in the examples of the methods above. Alternatively, the processing unit 1002 mainly performs terminal device internal actions in the method example, and the transceiving unit 1003 may support communication between the apparatus 1000 and a network device.

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

In one possible design, the transceiver unit 1003 is specifically configured to receive a radio frequency signal sent by the network device when receiving downlink control information sent by the network device; and carrying out downlink channel demodulation processing on the radio frequency signal to obtain CRC bits carried in the radio frequency signal and data bits and residual bits in downlink control information.

In one possible design, when the CRC bits are generated according to the data bits and the error correction bits, the processing unit 1002 is specifically configured to determine a data bit error in the downlink control information when the CRC bits fail to check the data bits and the error correction bits.

In one possible design, when the CRC bits are generated according to the data bits, the processing unit 1002 is specifically configured to determine a data bit error in the downlink control information when the CRC bits fail to check the data bits.

In one possible design, when the error correction bits are generated according to the data bits and the CRC bits, the processing unit 1002 is specifically configured to perform error correction decoding on the data bits and the CRC bits according to the error correction bits when performing error correction decoding on the data bits according to the error correction bits.

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 that performs 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, where the terminal device 1100 includes a processor 1110, a memory 1120, and a transceiver 1130.

In one 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 above embodiment. The processor 1110 is configured to read instructions or programs or data stored in the memory 1120. When executed, the processor 1110 is configured to perform the operations performed by the processing unit 1002 in the above embodiment, and the transceiver 1130 is configured to perform the operations performed by the transceiver unit 1003 in the above embodiment.

It should be understood that the communication apparatus 1000 or the terminal device 1100 according to the embodiment of the present application may correspond to the terminal device in the communication method (fig. 7) according to the embodiment of the present application, and operations and/or functions of each module in the communication apparatus 1000 or the terminal device 1100 are respectively for implementing corresponding flows of each method in fig. 7, which are not described herein for brevity.

The embodiment of the application also provides a communication device which can be a terminal device or a circuit. The communication means may be adapted to perform the actions performed by the terminal device in the above-described method embodiments.

Fig. 12 shows a simplified schematic diagram of the structure of a terminal device when the communication device is a terminal device. For easy understanding and convenient illustration, in fig. 12, a mobile phone is taken as an example of the terminal device. As shown in fig. 12, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a 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 illustration, only one memory and processor is shown in fig. 12. In an actual end 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, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the present application, the antenna and the radio frequency circuit with the transceiving function may be regarded as a transceiving unit (or a communication unit) of the terminal device, and the processor with the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 12, the terminal device includes a transceiving unit 1210 and a processing unit 1220. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit 1210 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 1210 may be regarded as a transmitting unit, that is, the transceiver unit 1210 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that, the transceiver unit 1210 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the above-described method embodiment, and the processing unit 1220 is configured to perform other operations on the terminal device other than the transmitting operation in the above-described method embodiment.

For example, in one implementation, the transceiver unit 1210 is configured to perform the sending and receiving operations of the terminal device side in S701 of fig. 7, and/or the transceiver unit 1210 is further configured to perform other transceiver steps of the terminal device side in the embodiment of the present application. The processing unit 1220 is configured to perform the processing operation on the terminal device side in S702 in fig. 7, and/or the processing unit 1220 is also 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-like device or circuit, the device may comprise a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon a program or instructions that, when executed, can perform the method on the terminal device side in the above-described method embodiment.

As another form of this embodiment, there is provided a computer program product containing instructions that, when executed, can perform the method on the terminal device side in the above-described method embodiment.

As another form of the present embodiment, there is provided a chip including a processor for executing a computer program or instructions stored in a memory, which when executed can perform the method on the terminal device side in the above-described method embodiment.

When the apparatus in this embodiment is a network device, the network device may, as shown in fig. 13, include one or more radio frequency units, such as a remote radio frequency unit (remote radio unit, RRU) 1310 and one or more baseband units (BBU) (also referred to as digital units, DUs) 1320. The RRU 1310 may be referred to as a transceiver unit, corresponding to the transceiver unit 803 in fig. 8, alternatively the transceiver unit may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1311 and a radio frequency unit 1312. The RRU 1310 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending configuration information to a terminal device. The BBU 1320 is mainly configured to perform baseband processing, control a base station, and the like. The RRU 1310 and BBU 1320 may be physically located together or may be physically separate, i.e., a distributed base station.

The BBU 1320 is a control center of a base station, and may also be referred to as a processing module, and may correspond to the processing unit 802 in fig. 8, and is mainly configured to perform baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on. For example, the BBU (processing module) may be configured to control the base station to perform the operation procedure related to the network device in the above method embodiment, for example, generate the above indication information, etc.

In one example, the BBU 1320 may be configured by one or more boards, where the multiple boards may support radio access networks of a single access system (such as an LTE network) together, or may support radio access networks of different access systems (such as an LTE network, a 5G network, or other networks) respectively. The BBU 1320 further comprises a memory 1321 and a processor 1322. The memory 1321 is used to store the necessary instructions and data. The processor 1322 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure related to the network device in the above-described method embodiment. The memory 1321 and processor 1322 may serve one or more boards. That is, the memory and the processor may be separately provided on each board. It is also possible that multiple boards share the same memory and processor. In addition, each single board can be provided with necessary circuits.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon a program or instructions that, when executed, can perform the method on the network device side in the above-described method embodiment.

As another form of this embodiment, there is provided a computer program product containing instructions that, when executed, perform the method on the network device side in the method embodiment described above.

As another form of the present embodiment, there is provided a chip including a processor for executing a computer program or instructions stored in a memory, which when executed can perform the method on the network device side in the above-described method embodiment.

In implementation, each step in the method provided in the present embodiment may be implemented by an integrated logic circuit of hardware in a processor or an instruction in a software form. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The 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 circuit (application specific integrated circuits, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, transistor logic device, hardware components, or any combination thereof; combinations of computing functions may also be implemented, for example, including one or more microprocessor combinations, a combination of DSP and microprocessor, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will be appreciated that the memory or storage units in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program or instructions may be stored in or transmitted across a 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 that integrates one or more available media. The usable medium may be a magnetic medium, e.g., floppy disk, hard disk, tape; but also optical media such as DVD; but also semiconductor media such as Solid State Disks (SSDs).

The various illustrative logical blocks and circuits described in connection with the embodiments of the present application may be implemented or performed with a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the general purpose processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software unit executed by a processor, or in a combination of the two. The software elements may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In an example, a storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may reside in a terminal device. In the alternative, the processor and the storage medium may reside in different components in a terminal device.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Although the embodiments of the present application have been described in connection with specific features, it will be apparent that various modifications and combinations thereof can be made without departing from the spirit and scope of the embodiments of the application. Accordingly, the specification and drawings are merely exemplary of embodiments of the application as defined in the appended claims and are to be considered as covering any and all modifications, variations, combinations, or equivalents of the embodiments of the application.

Claims

1. A method of communication, comprising:

performing error correction coding on data bits to be transmitted to generate error correction bits;

filling the error correction bits into downlink control information as residual bits in the downlink control information, wherein the residual bits are reserved bits in the downlink control information;

and sending the downlink control information to terminal equipment, wherein the downlink control information comprises the data bit and the residual bit.

2. The method of claim 1, wherein the sending the downlink control information to the terminal device comprises:

generating Cyclic Redundancy Check (CRC) bits according to the data bits and the error correction bits, performing downlink channel processing on the data bits, the residual bits and the CRC bits, and transmitting radio frequency signals obtained by the downlink channel processing to the terminal equipment.

3. The method of claim 1, wherein the error correction encoding the data bits to be transmitted to generate error correction bits comprises:

generating CRC bits according to data bits to be transmitted, performing error correction coding on the data bits and the CRC bits, and generating error correction bits.

4. The method of claim 3, wherein the sending the downlink control information to the terminal device comprises:

and carrying out downlink channel processing on the data bits, the residual bits and the CRC bits, and transmitting radio frequency signals obtained by the downlink channel processing to the terminal equipment.

5. The method according to any one of claims 1-4, wherein the downlink control information is downlink control information of system information block 1SIB 1; or downlink control information of the radio resource control RAR; or downlink control information of paging messages.

6. The method according to any one of claims 1-4, wherein the data bits subjected to error correction coding are part or all of the data bits in the downlink control information.

7. The method according to any of claims 1-4, wherein before the filling the error correction bits into the downlink control information as remaining bits in the downlink control information, the method further comprises:

When the length of the error correction bit is determined to be larger than the error correction bit length threshold value, punching the error correction bit; wherein the length of the error correction bit after the punching process is not greater than the error correction bit length threshold.

8. The method of any one of claims 1-4, wherein the method further comprises:

and sending configuration information to the terminal equipment, wherein the configuration information comprises content information for performing the error correction coding and length information of the error correction bits.

9. A method of communication, comprising:

receiving downlink control information sent by network equipment;

and when the data bit errors in the downlink control information are determined, performing error correction decoding on the data bit according to an error correction bit, wherein the error correction bit is used as a residual bit in the downlink control information to be filled in the downlink control information, and the residual bit is a reserved bit in the downlink control information.

10. The method of claim 9, wherein the receiving downlink control information sent by the network device comprises:

receiving a radio frequency signal sent by network equipment;

and carrying out downlink channel demodulation processing on the radio frequency signal to obtain Cyclic Redundancy Check (CRC) bits carried in the radio frequency signal and data bits and residual bits in downlink control information.

11. The method of claim 10, wherein the determining the data bit error in the downstream control information when the CRC bits are generated from the data bits and the error correction bits comprises:

and determining that the data bit and the error correction bit are not checked according to the CRC bit.

12. The method of claim 10, wherein the determining a data bit error in the downstream control information when the CRC bit is generated from the data bit comprises:

and determining that the data bit is not checked according to the CRC bit.

13. The method of claim 12, wherein when the error correction bits are generated from the data bits and the CRC bits, the error correction decoding the data bits from the error correction bits comprises:

and performing error correction decoding on the data bits and the CRC bits according to the error correction bits.

14. The method of any one of claims 9-13, wherein the method further comprises:

and receiving configuration information sent by the network equipment, wherein the configuration information comprises content information for error correction coding and length information of the error correction bits.

15. A communication device, the device comprising:

the processing unit is used for carrying out error correction coding on data bits to be transmitted and generating error correction bits;

the processing unit is further configured to fill the error correction bits into downlink control information as remaining bits in the downlink control information, where the remaining bits are reserved bits in the downlink control information;

and the receiving and transmitting unit is used for transmitting the downlink control information to the terminal equipment, wherein the downlink control information comprises the data bit and the residual bit.

16. The communications apparatus of claim 15, wherein the processing unit is further configured to generate cyclic redundancy check, CRC, bits from the data bits and the error correction bits;

and the receiving and transmitting unit is specifically configured to perform downlink channel processing on the data bits, the residual bits and the CRC bits when sending the downlink control information to a terminal device, and send a radio frequency signal obtained by the downlink channel processing to the terminal device.

17. The communication device according to claim 15, wherein the processing unit is configured to perform error correction encoding on data bits to be transmitted, and when generating error correction bits, is specifically configured to generate CRC bits according to the data bits to be transmitted, perform error correction encoding on the data bits and the CRC bits, and generate error correction bits.

18. The communication device of claim 17, wherein the transceiver unit is configured to perform downlink channel processing on the data bits, the residual bits, and the CRC bits when transmitting the downlink control information to a terminal device, and transmit a radio frequency signal obtained by the downlink channel processing to the terminal device.

19. The communication apparatus according to any one of claims 15-18, wherein the downlink control information is downlink control information of system information block 1SIB 1; or downlink control information of the radio resource control RAR; or downlink control information of paging messages.

20. A communication device according to any of claims 15-18, wherein the error correction coded data bits are part or all of the data bits in the downlink control information.

21. The communication device according to any of claims 15-18, wherein the processing unit is further configured to perform puncturing processing on the error correction bits when it is determined that the length of the error correction bits is greater than an error correction bit length threshold, before padding the error correction bits into the downlink control information as remaining bits in the downlink control information; wherein the length of the error correction bit after the punching process is not greater than the error correction bit length threshold.

22. The communication apparatus according to any one of claims 15 to 18, wherein the transceiving unit is further configured to transmit configuration information to the terminal device, the configuration information including content information subjected to the error correction coding and length information of the error correction bits.

23. A communication device, the device comprising:

the receiving and transmitting unit is used for receiving downlink control information sent by the network equipment;

and the processing unit is used for carrying out error correction decoding on the data bits according to error correction bits when determining that the data bits in the downlink control information are wrong, wherein the error correction bits are used as residual bits in the downlink control information to be filled in the downlink control information, and the residual bits are reserved bits in the downlink control information.

24. The communication device of claim 23, wherein the transceiver unit is configured to receive, when receiving downlink control information sent by the network device, a radio frequency signal sent by the network device; and carrying out downlink channel demodulation processing on the radio frequency signal to obtain Cyclic Redundancy Check (CRC) bits carried in the radio frequency signal and data bits and residual bits in downlink control information.

25. The communication apparatus according to claim 24, wherein the processing unit is configured to determine a data bit error in the downstream control information when the CRC bits are generated from the data bits and the error correction bits, in particular when the CRC bits fail to check the data bits and the error correction bits.

26. The communication apparatus according to claim 24, wherein the processing unit is configured to determine a data bit error in the downstream control information when the CRC bit is generated from the data bit, in particular when the CRC bit fails to check the data bit.

27. The communication apparatus according to claim 26, wherein the processing unit is operative, when the error correction bits are generated from the data bits and the CRC bits, to error correction decode the data bits and the CRC bits from the error correction bits.

28. The communication apparatus according to any one of claims 23 to 27, wherein the transceiver unit is further configured to receive configuration information sent by the network device, the configuration information including content information subjected to error correction coding and length information of the error correction bits.

29. A communication device comprising a memory and a processor;

a memory for storing a computer program or instructions;

a processor for executing a computer program or instructions stored in the memory, which when executed causes the method of any one of claims 1-8 or 9-14 to be performed.

30. A communication device comprising a processor, a transceiver, and a memory;

the transceiver is used for receiving signals or transmitting signals;

the memory is used for storing a computer program or instructions;

the processor for executing a computer program or instructions in a memory, which when executed causes the method of any of claims 1-8 or 9-14 to be performed.

31. A communication device is characterized by comprising a processor and an interface circuit,

the interface circuit is used for receiving program or instruction codes and transmitting the program or instruction codes to the processor;

the processor for executing a program or instruction code that when executed by the processor causes the method of any of claims 1-8 or 9-14 to be performed.

32. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a computer program or instructions, which, when executed by one or more processors, implement the method of any one of claims 1-8 or 9-14.

33. A chip comprising a processor for executing a computer program or instructions stored in a memory, implementing the method of any one of claims 1-8 or 9-14.