WO2018166416A1

WO2018166416A1 - Method and apparatus for transmitting control information

Info

Publication number: WO2018166416A1
Application number: PCT/CN2018/078693
Authority: WO
Inventors: 皇甫幼睿; 罗禾佳; 乔云飞; 黄凌晨; 李榕
Original assignee: 华为技术有限公司
Priority date: 2017-03-13
Filing date: 2018-03-12
Publication date: 2018-09-20
Also published as: CN108574558B; CN108574558A

Abstract

Provided is a method for transmitting control information, wherein the method is executed in a communication system using at least two division modes to divide time-frequency resources used for transmitting control information, and a plurality of time-frequency resource blocks divided by means of the at least two division modes are of a nested structure. The method comprises: determining, from a plurality of time-frequency resource blocks, a first time-frequency resource block used for sending first control information; dividing the first control information into m information segments; according to the m information segments, generating m pieces of information to be sent, wherein each piece of information to be sent comprises corresponding information segments, information i to be sent comprises information segments i and check sequences i, and the check sequences i are generated according to the information segments i, i ϵ [1, m]; performing polar code encoding on the m pieces of information to be sent so as to generate a symbol sequence; and by means of the first time-frequency resource block, sending the symbol sequence. The present invention can reduce resource overheads for transmitting control information, thereby reducing the calculation complexity and processing delay of blind detection.

Description

Method and apparatus for transmitting control information

The present application claims the priority of the Chinese Patent Application, which is filed on March 13, 2017, to the Chinese Patent Office, the number of which is hereby incorporated by reference. .

Technical field

The present application relates to the field of communications and, more particularly, to a method and apparatus for transmitting control information.

Background technique

Currently, a technique is known in which a time division resource for transmitting downlink control information is divided into multiple division manners, and the time-frequency resource is divided into multiple time-frequency resource blocks, and any two time-frequency resource blocks. The number of time-frequency resource units included is different. Moreover, in the prior art, the positions of the various time-frequency resource blocks in the time-frequency resource are different, that is, different types of time-frequency resource blocks do not have a nested structure.

When transmitting the downlink control information, the network device may select one time-frequency resource block from the plurality of time-frequency resource blocks, and send the downlink control information on the selected time-frequency resource block. The terminal device may perform blind detection on the various time-frequency resource blocks in different locations to obtain the downlink control information.

For example, in a Long Term Evolution (LTE) system, a Physical Downlink Control Channel (PDCCH) carries control information. As shown in Figure 1, the network device first performs Cyclic Redundancy Check (CRC) encoding on the Downlink Control Information (DCI) to be sent to obtain a 16-bit CRC sequence, and then the base station will 16-bit wireless. The Radio Network Temporary Identifier (RNTI) information is subjected to an exclusive OR (XOR) operation (ie, a scrambling operation) to obtain a 16-bit CRC sequence scrambled by the RNTI to scramble the RNTI. The latter 16-bit CRC sequence is concatenated to the above DCI and performs channel coding, modulation, mapping, and transmission procedures. The PDCCH channel coding uses Tail Biting Convolution Coding (TBCC). Moreover, as shown in FIG. 2, the terminal device does not know the specific time-frequency resource location of the PDCCH, and the receiving end needs to perform blind detection on the potential location of the PDCCH.

With the development of communication technology, the number of terminal devices is increasing, how to improve the utilization efficiency of limited time-frequency resources has become an urgent problem to be solved in the industry. The above prior art does not have a nested structure due to different kinds of time-frequency resource blocks. The communication system needs to allocate more time-frequency resources, which increases the resource overhead of transmission of downlink control information.

Summary of the invention

The present application provides a method and apparatus for transmitting control information, which can reduce the resource overhead of transmission of control information.

In a first aspect, a method for transmitting control information is provided, which is implemented in a communication system that divides time-frequency resources for transmitting control information by using at least two division manners, and multiple time-frequency divisions divided by the at least two division manners The resource block is a nested structure, and the method includes: the network device determining, from the plurality of time-frequency resource blocks, a first time-frequency resource block for transmitting the first control information; the network device, the first control The information is divided into m pieces of information, m≥1; the network device generates m pieces of to-be-sent information according to the m pieces of information, and the m pieces of information are in one-to-one correspondence with the m pieces of information to be sent, each The information to be transmitted includes the corresponding information fragment, wherein the information to be transmitted i includes the information fragment i and the check sequence i, and the check sequence i is generated according to the information fragment i, i∈[1,m] The network device performs polar polar code encoding on the m pieces of to-be-transmitted information to generate a symbol sequence; and the network device sends the symbol sequence by using the first time-frequency resource block.

Optionally, the at least two division manners are corresponding to the at least two types of time-frequency resource blocks, and each type of time-frequency resource block is divided according to the corresponding division manner, and each type of time-frequency resource block includes at least one time. The frequency resource block has different sizes of the at least two types of time-frequency resource blocks, and the at least two types of time-frequency resource blocks are in a nested structure.

Optionally, each time-frequency resource block includes at least one time-frequency resource unit, where the time-frequency resource unit is a minimum granularity (or unit) of time-frequency resource allocation (or, in use).

Optionally, the time-frequency resource unit includes a Control Channel Element (CCE).

According to the method for transmitting control information according to the embodiment of the present application, a plurality of time-frequency resource blocks divided according to different division manners have a nested structure, and the network device needs to be divided according to the selected first time-frequency resource block. The first control information that is sent is divided into m pieces of information, and the pieces of m to be sent corresponding to the m pieces of information are polar-coded, so that the terminal device can be allocated according to each time-frequency resource block. Determining the number of information fragments carried by each time-frequency resource block, and further, the terminal device can perform polar coding for each time-frequency resource block according to the number of information fragments carried by each time-frequency resource block. Blind detection to obtain first control information, thereby enabling transmission of control information in a case where different types of time-frequency resource blocks have a nested structure, which can reduce resource overhead of transmission of control information, and can Reduce the complexity of decoding and processing delay.

Optionally, the network device divides the first control information into m pieces of information, including: determining, by the network device, a first degree of aggregation n from at least one degree of aggregation used by the communication system, where The degree of aggregation is used to indicate the number of time-frequency resource units occupied by one information fragment, or the degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block, or the degree of aggregation is used to indicate a time-frequency. The number of check sequences carried by the resource block; the network device divides the first control information into m pieces of information according to the first degree of polymerization n.

Optionally, the network device divides the first control information into m pieces of information, including: determining, by the network device, a first degree of aggregation n from at least one degree of aggregation used by the communication system, where The degree of aggregation is used to indicate the number of time-frequency resource units occupied by one information fragment, or the degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block, or the degree of aggregation is used to indicate a time-frequency. The number of the check sequence carried by the resource block; the network device determines the number h of time-frequency resource units included in the first time-frequency resource block according to the division manner corresponding to the first time-frequency resource block; The first control information is divided into m pieces of information by the number h of time-frequency resource units included in the one-time resource block and the first degree of aggregation n.

Alternatively, m=h/n.

Optionally, the communication system uses one degree of aggregation, wherein the number of time-frequency resource units occupied by one information fragment indicated by the one degree of aggregation is 1; or the communication system uses two degrees of polymerization, the two degrees of polymerization The number of time-frequency resource units occupied by one information fragment indicated is 1, 4; or the communication system uses four types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the four types of aggregation degrees respectively 1 , 2, 4, 8; or the communication system uses a degree of aggregation, the number of information fragments carried by one time-frequency resource block indicated by the one degree of polymerization is 1; or the communication system uses two degrees of polymerization The number of information fragments carried by one time-frequency resource block indicated by the two types of aggregation degrees is 1, 2; or the communication system uses four types of aggregation degrees, which are carried by one time-frequency resource block indicated by the four types of aggregation degrees. The number of information fragments is 1, 2, 4, 8 respectively; or the communication system uses one degree of aggregation, and the number of verification sequences carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or the communication The system uses two degrees of polymerization, and the two degrees of polymerization indicate The number of check sequences carried by a time-frequency resource block is 1, 2; or the communication system uses four types of aggregation degrees, and the number of check sequences carried by one time-frequency resource block indicated by the four types of aggregation degrees is 1 respectively. , 2, 4, 8.

According to the method for transmitting control information according to the embodiment of the present application, by providing multiple degrees of aggregation, one time-frequency resource block can carry different numbers of information fragments when different degrees of aggregation are used, thereby improving resource usage. The flexibility, and thus the utility of the method of transmitting control information of the embodiments of the present application.

Optionally, the network device performs polar polar code encoding on the m to-be-sent information, including: the network device performs first mode encoding on the m to-be-sent information; and the network device encodes the first mode. The m pieces of information to be transmitted are coded by the polar code.

Optionally, the first mode coding comprises any one of a polar code coding, a tail biting convolutional code TBCC coding, a low density parity check LDPC code coding, or a turbo Turbo code coding.

Optionally, the method further includes: the network device sending the indication information encoded by the first mode.

According to the method for transmitting control information according to the embodiment of the present application, the coding manner of one information to be transmitted and the coding manner of the entire information to be transmitted are different, thereby being able to flexibly cope with the demand for different coding modes, thereby improving The flexibility of the coding mode, and thus the utility of the method of transmitting control information in the embodiments of the present application.

A second aspect provides a method for transmitting control information, which is executed in a communication system that divides time-frequency resources for transmitting control information by using at least two division manners, and multiple time-frequency divisions divided by the at least two division manners The resource block is a nested structure, and the method includes: receiving, by the terminal device, the symbol sequence sent by the network device by using the time-frequency resource, where the symbol sequence is that the network device performs polar polar code encoding on the m to-be-sent information. The generated information to be sent is in one-to-one correspondence with the m pieces of information, and each information to be transmitted includes the corresponding information fragment, and the information to be transmitted i includes the information fragment i and the verification sequence i, and the verification The sequence i is generated according to the information fragment i, i∈[1,m], and the m information fragments are generated by the network device segmenting the first control information, m≥1; the terminal device Determining, by each time-frequency resource block, the number of information to be sent, where each to-be-transmitted information includes an information fragment and a check sequence; the terminal device sends a to-be-transmitted message according to each time-frequency resource block. The number of polar code decoding mode based on the polarity, the symbol sequence blind detection processing to acquire the first control information.

According to the method for transmitting control information according to the embodiment of the present application, a plurality of time-frequency resource blocks divided according to different division manners have a nested structure, and the network device needs to be divided according to the selected first time-frequency resource block. The first control information that is sent is divided into m pieces of information, so that the terminal device can determine the number of pieces of information carried by each time-frequency resource block based on the division manner corresponding to each time-frequency resource block, and further, The terminal device can perform blind detection on each time-frequency resource block according to the number of information fragments carried by each time-frequency resource block to obtain first control information, thereby being capable of embedding in different kinds of time-frequency resource blocks. In the case of a set structure, the transmission of control information is realized, the resource overhead of transmission of control information can be reduced, and the complexity of decoding and processing delay can be reduced.

Optionally, the terminal device determines the number of information to be sent that is carried by each time-frequency resource block, and includes: determining, by the terminal device, the aggregation corresponding to each time-frequency resource block from the at least one aggregation degree used by the communication system. Degree, wherein the degree of aggregation is used to indicate the number of time-frequency resource units occupied by one information fragment, or the degree of aggregation is used to indicate the number of information fragments carried by a time-frequency resource block, or the degree of aggregation is used. And indicating the number of check sequences carried by a time-frequency resource block; the terminal device determines the number of information to be sent carried by each time-frequency resource block according to the corresponding aggregation degree of each time-frequency resource block.

Optionally, each time-frequency resource block includes at least one time-frequency resource unit, each time-frequency resource block includes at least one time-frequency resource unit, and the terminal device performs, according to each of the plurality of time-frequency resource blocks, a time-frequency resource block. Determining the number of information to be sent that is carried by each time-frequency resource block, and determining, by the terminal device, the degree of aggregation corresponding to each time-frequency resource block from the at least one degree of aggregation used by the communication system, The aggregation degree is used to indicate the number of time-frequency resource units occupied by one information fragment, or the aggregation degree is used to indicate the number of information fragments carried by one time-frequency resource block, or the aggregation degree is used to indicate a number of check sequences carried by a time-frequency resource block; the terminal device determines the number of time-frequency resource units included in each time-frequency resource block according to a division manner corresponding to each time-frequency resource block; the terminal device according to each The number of time-frequency resource units included in each time-frequency resource block and each time-frequency resource block include a corresponding degree of aggregation, and the number of information to be transmitted carried by each time-frequency resource block is determined. .

Optionally, the communication system uses one degree of aggregation, wherein the number of time-frequency resource units occupied by one information fragment indicated by the one degree of aggregation is 1; or the communication system uses two degrees of polymerization, the two degrees of polymerization The number of time-frequency resource units occupied by one information fragment indicated is 1, 4; or the communication system uses four types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the four types of aggregation degrees respectively 1 , 2, 4, 8; or the communication system uses a degree of aggregation, the number of information fragments carried by one time-frequency resource block indicated by the one degree of polymerization is 1; or the communication system uses two degrees of polymerization The number of information fragments carried by one time-frequency resource block indicated by the two types of aggregation degrees is 1, 2, respectively; or the communication system uses four types of aggregation degrees, which are carried by one time-frequency resource block indicated by the four types of aggregation degrees. The number of information fragments is 1, 2, 4, 8 respectively; or the communication system uses one degree of aggregation, and the number of verification sequences carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or the communication The system uses two degrees of polymerization, which are indicated by the two degrees of polymerization. The number of check sequences carried by a time-frequency resource block is 1, 2; or the communication system uses four types of aggregation degrees, and the number of check sequences carried by one time-frequency resource block indicated by the four types of aggregation degrees is 1 respectively. , 2, 4, 8.

Optionally, the terminal device performs blind detection processing on the symbol sequence according to the polarity polar code decoding manner according to the quantity of information to be sent that is carried by each time-frequency resource block, including: the terminal device according to each time The information to be sent by the frequency resource block is subjected to a polar code decoding; the terminal device performs the first mode decoding on the to-be-transmitted information decoded by the polar code.

Optionally, the method further includes: the terminal device receiving the indication information of the first mode decoding sent by the network device.

In a third aspect, an apparatus for transmitting control information is provided, comprising means for performing the steps of the first aspect and the methods of the implementations of the first aspect.

In a fourth aspect, an apparatus for transmitting control information is provided, comprising means for performing the steps of the second aspect and the methods of the implementations of the second aspect.

A fifth aspect provides an apparatus for transmitting control information, including a memory and a processor, the memory for storing a computer program, the processor for calling and running the computer program from the memory, such that the device transmitting the control information performs In one aspect and the method of any of the possible implementations of the first aspect.

In a sixth aspect, an apparatus for transmitting control information is provided, comprising: a memory and a processor, the memory for storing a computer program, the processor for calling and running the computer program from the memory, such that the device transmitting the control information performs The method of any of the possible implementations of the second aspect and the second aspect.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run by a communication unit, a processing unit or a transceiver of a terminal device, or a processor, causing a network device The method of any of the possible implementations of the first aspect or the first aspect.

In an eighth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run by a communication unit, a processing unit or a transceiver of a network device, or a processor, causing the terminal device The method of any of the possible implementations of the second aspect or the second aspect is performed.

A ninth aspect, a computer readable storage medium storing a program, the program causing a network device to perform the method of the first aspect or any one of the possible implementations of the first aspect .

A tenth aspect, a computer readable storage medium storing a program, the program causing a terminal device to perform the method of any of the possible implementations of the second aspect or the second aspect .

DRAWINGS

FIG. 1 is a process of PDCCH processing at a transmitting end in LTE.

2 is a process of receiving PDCCH processing in LTE.

Figure 3 is a basic flow chart of wireless communication.

FIG. 4 is an application scenario diagram of an embodiment of the present application.

FIG. 5 is a schematic diagram of a manner of dividing a time-frequency resource block of a nested structure of the present application.

FIG. 6 is a schematic interaction diagram of a method for transmitting control information according to the present application.

Figure 7 is a structural diagram of the Arikan Polar code.

Fig. 8 is a configuration diagram of a CA Polar code.

Fig. 9 is a configuration diagram of a PC Polar code.

FIG. 10 is a flowchart of a method for encoding control information according to the present application.

FIG. 11 is a flowchart of a method for encoding control information according to the present application.

FIG. 12 is a logical configuration diagram of an example of an apparatus for transmitting control information according to the present application.

Fig. 13 is a logical structural diagram showing another example of the apparatus for transmitting control information of the present application.

Fig. 14 is a view showing the physical structure of an example of an apparatus for transmitting control information according to the present application.

Figure 15 is a diagram showing the physical structure of another example of the apparatus for transmitting control information of the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

3 is a basic flow of wireless communication. In a wireless communication system, at a transmitting end, a source is sequentially transmitted after source coding, channel coding, rate matching, and modulation mapping.

At the receiving end, the output sink is sequentially demodulated by demodulation, de-rate matching, channel decoding, and source decoding.

It should be noted that the wireless communication system to which the method for transmitting control information in the embodiment of the present application can be applied includes, but is not limited to, a Narrow Band-Internet of Things (NB-IoT), a global mobile communication system ( Global System for Mobile Communications (GSM), Enhanced Data Rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 ( Code Division Multiple Access 2000, CDMA2000), Time Division-Synchronization Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE), and next-generation communication systems, for example, 5th Generation (5G) communication system.

Among them, three types of scenarios are defined in the 5G communication system and more possible communication systems, namely Enhanced Mobile Broadband (eMBB) and Ultra Reliable Low Latency Communications (URLLC). And massive Machine Type Communications (mMTC). Among them, the eMBB service mainly includes ultra high definition video, augmented reality AR, virtual reality VR, etc. The main feature is that the transmission data volume is large and the transmission rate is high. The URLLC service is mainly used for industrial control and unmanned driving in the Internet of Things. The main features are ultra-high reliability, low latency, low transmission data and burstiness. The mMTC service is mainly used for smart grids and smart cities in the Internet of Things. The main features are the connection of mass devices, the small amount of data transmitted, and the delay of tolerating for a long time.

The embodiments of the present application can be applied to a wireless communication system, where a wireless communication system usually consists of a cell, and each cell includes a network device, such as a base station (BS), and the base station transmits to multiple terminal devices, for example, a mobile station (Mobile Station). , MS) provides communication services in which the base station is connected to the core network device, as shown in FIG.

Optionally, the network device is a base station, and the terminal device is a user equipment.

That is, in the embodiment of the present application, the network device may include a Baseband Unit (BBU) and a Remote Radio Unit (RRU). The BBU and the RRU can be placed in different places, for example, the RRU is pulled away, placed in an open area from high traffic, and the BBU is placed in the central computer room. BBUs and RRUs can also be placed in the same room. The BBU and RRU can also be different parts under one rack.

In the embodiment of the present application, the network device is a device deployed in the radio access network to provide a wireless communication function for the terminal device. The base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. In systems with different radio access technologies, the names of devices with base station functions may be different. For example, the network device may be an access point (APCESS POINT, AP) in the WLAN, or the network device may also It is a Base Transceiver Station (BTS) in GSM or CDMA, or the network device may be an evolved NodeB (eNB or eNodeB) in the LTE system, or the network device may be the third generation ( 3rd Generation, 3G) Node B of the system. In addition, the network device can also be a relay station or an access point, or an in-vehicle device, a wearable device, and a network device in a future 5G network or a PLLM network in a future evolution. Network equipment, etc. For convenience of description, in all embodiments of the present application, the above devices for providing wireless communication functions to the MS are collectively referred to as network devices (e.g., base stations or BSs).

The present application describes various embodiments in connection with a terminal device. A terminal device may also be referred to as a User Equipment (UE) user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, a remote terminal, and a mobile device. Device, user terminal, terminal, wireless communication device, user agent or user device.

By way of example and not limitation, the terminal devices referred to in the embodiments of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem. It may also include a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a wireless modem, and a handheld device. ), laptop computer, Machine Type Communication (MTC) terminal, site in wireless local area network (WLAN) (STAION, ST), can be cellular phone, cordless phone, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and next-generation communication systems, such as terminal devices in the fifth-generation (5G) network or the future Terminal equipment in an evolved Public Land Mobile Network (PLMN) network, and the like.

Among them, the wearable device may also be referred to as a wearable smart device, and is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various smart bracelets for smart signs monitoring, smart jewelry, etc.

In addition, in the embodiment of the present application, the terminal device may perform wireless communication in a cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to the macro base station, or may belong to a small cell (small cell). The base station, where the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc., these small cells have small coverage and low transmission power. The features are suitable for providing high-speed data transmission services.

In addition, in the embodiment of the present application, multiple carriers can work at the same frequency on the carrier at the same time. In some special scenarios, the concept of a carrier and a cell in a system such as LTE can also be considered to be equivalent. For example, in a carrier aggregation (CA) scenario, when a secondary carrier is configured for a UE, the carrier index of the secondary carrier and the cell identifier (Cell ID) of the secondary cell working in the secondary carrier are simultaneously carried. In this case, the concept of the carrier and the cell can be considered to be equivalent, for example, the UE accessing one carrier and accessing one cell are equivalent.

The method and apparatus provided by the embodiments of the present application may be applied to a terminal device or a network device, where the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. . The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, contacts, word processing software, and instant messaging software. Further, in the embodiment of the present application, the specific structure of the execution subject of the method for transmitting a signal is not particularly limited as long as the program of the code for recording the method of transmitting the signal of the embodiment of the present application can be executed. The method for transmitting a signal of the embodiment may be used for communication. For example, the execution body of the method for transmitting feedback information in the embodiment of the present application may be a terminal device or a network device, or may be a terminal device or a network device capable of calling a program and executing The functional module of the program.

Furthermore, various aspects or features of the present application can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, the computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (Digital Versatile Disc, DVD). Etc.), smart cards and flash memory devices (eg, Erasable Programmable Read-Only Memory (EPROM), cards, sticks or key drivers, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.

The time-frequency resources for transmitting control information in the embodiments of the present application are described below.

In this embodiment of the present application, the time-frequency resource is used to carry control information. For example, the control information may include common control information sent to multiple terminal devices, and/or dedicated control information for one terminal device.

By way of example and not limitation, the time-frequency resource may be referred to as a search space, and the search space may include a common search space for carrying common control information (eg, cell level control information) And, the search space may include a UE-specific search space for carrying dedicated control information (eg, UE level control information).

Moreover, the time-frequency resource may be composed of consecutive multiple time-frequency resource units, where the time-frequency resource unit may be a resource unit in a communication system (for example, for information transmission or resource allocation).

For example, as an example and not limitation, in the embodiment of the present application, the time-frequency resource unit may be a unit in a frequency domain, for example, one time-frequency resource unit may include one or more sub-carriers.

Or, in the embodiment of the present application, the time-frequency resource unit may be a unit in the time domain, for example, one time-frequency resource unit may include one or more symbols, or one time-frequency resource unit may include one or more units. Slot or mini-slot.

Or, in the embodiment of the present application, the time-frequency resource unit may be a unit in the time domain and the frequency domain. For example, one time-frequency resource unit may include one or more resource elements (RE elements), and, for example, A time-frequency resource unit may include one or more resource blocks (RBs), and for example, one time-frequency resource unit may include one or more resource element groups (REGs), and for example, one time The frequency resource unit may include one or more Resource Block Groups (RBGs), and for example, one time-frequency resource unit may include one or more CCEs.

It should be understood that the specific structure and definition of the time-frequency resource unit enumerated above are merely exemplary. The present application is not limited thereto, and the form of the time-frequency resource unit may be determined according to the distribution form of the time-frequency resource. For example, if the time-frequency resources used for transmitting the control information are mainly distributed in the time domain, or the time-frequency resources used for transmitting the control information occupy a small amount of resources frequently, and occupy more resources in the time domain. The time-frequency resource unit may be a unit in the time domain; if the time-frequency resource for transmitting the control information is mainly distributed in the frequency domain, or the time-frequency resource for transmitting the control information is in time The frequency-frequency resource unit can be a unit in the frequency domain, if a small amount of resources are occupied on the frequency and more resources are occupied in the frequency domain.

Hereinafter, in order to facilitate understanding and explanation, without loss of generality, CCE is taken as an example of a time-frequency resource unit.

In the embodiment of the present application, a time-frequency resource for transmitting control information (for example, a time-frequency resource corresponding to a search space) may be divided into multiple (at least two) based on a plurality of (at least two) division manners. A type of time-frequency resource block, and the plurality of types of time-frequency resource blocks have a nested structure.

Without loss of generality, the time-frequency resource for transmitting control information (for example, the time-frequency resource corresponding to the search space) includes a total of eight time-frequency resource units, which are recorded as: time-frequency resource unit #0-time-frequency resource unit# 8.

As shown in FIG. 5, by way of example and not limitation, in the embodiment of the present application, the communication system may use four types of division, that is, time-frequency resources for transmitting control information (for example, a time-frequency corresponding to the search space). The resource may be divided into four types of time-frequency resource blocks based on the four types of division modes, that is, the four types of division modes are in one-to-one correspondence with the four types of time-frequency resource blocks.

The four division manners correspond to the four aggregation levels, wherein the aggregation level may be used to indicate the number of time-frequency resource units included in the time-frequency resource block, and, by way of example and not limitation, the four aggregations The levels can be 1, 2, 4, and 8, respectively.

That is, as shown in FIG. 5, based on the partitioning mode with the aggregation level of 1, the time-frequency resource (for example, the time-frequency resource corresponding to the search space) for transmitting the control information can be divided into eight time-frequency resource blocks (for example, Time-frequency resource block #0 to time-frequency resource block #7), each time-frequency resource block includes one time-frequency resource unit.

The time-frequency resource for transmitting control information (for example, the time-frequency resource corresponding to the search space) can be divided into four time-frequency resource blocks (for example, time-frequency resource block #8 to time). Frequency resource block #11), each time-frequency resource block includes 2 time-frequency resource units.

The time-frequency resource (for example, the time-frequency resource corresponding to the search space) for transmitting the control information can be divided into two time-frequency resource blocks (for example, the time-frequency resource block #12 to time). Frequency resource block #13), each time-frequency resource block includes 4 time-frequency resource units.

The time-frequency resource (for example, the time-frequency resource corresponding to the search space) used for transmitting the control information can be divided into one time-frequency resource block (for example, time-frequency resource block #14), based on the partitioning mode with the aggregation level of 8. Each time-frequency resource block includes 8 time-frequency resource units.

In the embodiment of the present application, each time-frequency resource block divided by the foregoing manner has a nested structure. Specifically, as shown in FIG. 5, the resource occupied by the time-frequency resource block #8 (specifically, a time-frequency resource) The unit is the same as the resource occupied by the time-frequency resource block #0 to the time-frequency resource block #1 (specifically, the time-frequency resource unit), that is, the time-frequency resource unit #0 to the time-frequency resource unit #1.

The resources occupied by the time-frequency resource block #9 (specifically, the time-frequency resource unit) are the same as the resources occupied by the time-frequency resource block #2 to the time-frequency resource block #3 (specifically, the time-frequency resource unit). That is, the time-frequency resource unit #2 to the time-frequency resource unit #3.

The resources occupied by the time-frequency resource block #10 (specifically, the time-frequency resource unit) are the same as the resources occupied by the time-frequency resource block #4 to the time-frequency resource block #5 (specifically, the time-frequency resource unit). That is, time-frequency resource unit #4 to time-frequency resource unit #5.

The resources occupied by the time-frequency resource block #11 (specifically, the time-frequency resource unit) are the same as the resources occupied by the time-frequency resource block #6 to the time-frequency resource block #7 (specifically, the time-frequency resource unit). That is, the time-frequency resource unit #6 to the time-frequency resource unit #7.

Moreover, the resources occupied by the time-frequency resource block #12 (specifically, the time-frequency resource unit) and the resources occupied by the time-frequency resource block #8 to the time-frequency resource block #9 (specifically, time-frequency resource units) The same, that is, time-frequency resource unit #0 to time-frequency resource unit #3.

The resources occupied by the time-frequency resource block #13 (specifically, the time-frequency resource unit) are the same as the resources occupied by the time-frequency resource block #10 to the time-frequency resource block #11 (specifically, the time-frequency resource unit). That is, the time-frequency resource unit #4 to the time-frequency resource unit #7.

Moreover, the resources occupied by the time-frequency resource block #14 (specifically, the time-frequency resource unit) and the resources occupied by the time-frequency resource block #12 to the time-frequency resource block #13 (specifically, time-frequency resource units) The same, that is, time-frequency resource unit #0 to time-frequency resource unit #7.

That is, in the embodiment of the present application, the multiple types of time-frequency resource blocks divided by the multiple division manners have a nested structure, which may mean that multiple types of time-frequency resource blocks divided by multiple division manners correspond to the same Multiple time-frequency resource units.

Or, the multiple types of time-frequency resource blocks that are divided by multiple division manners have a nested structure. The total time-frequency resource units occupied by multiple types of time-frequency resource blocks divided by multiple division manners are the same. of.

It should be understood that the specific number of time units, the number of division manners, and the number of aggregation levels included in the time-frequency resources for transmitting control information (for example, time-frequency resources corresponding to the search space) are merely exemplary descriptions. The application is not limited to this, and the time-frequency resources may be divided in any manner according to actual needs.

Hereinafter, a process of performing control information transmission based on the time-frequency resource blocks divided as shown above by the network device and the terminal device will be described in detail.

6 shows a schematic flow of a method 100 of transmitting control information of the present application. As shown in FIG. 6, at S110, a network device (eg, a base station) may generate control information #A (ie, the first control information). For example, the control information #A may be public control information or UE specific control information, and the present application is not particularly limited.

By way of example and not limitation, in the embodiment of the present application, the control information #A may be a bit sequence after being encoded by, for example, a source.

And, in S110, the network device may determine, from the plurality of time-frequency resource blocks (for example, the time-frequency resource block #0 to the time-frequency resource block #14) divided as described above (for example, from the search space) A time-frequency resource block for transmitting the control information #A (that is, an example of the first time-frequency resource block, hereinafter, for convenience of understanding and explanation, is referred to as time-frequency resource block #A).

By way of example and not limitation, in the embodiment of the present application, the network device may determine the size of the time-frequency resource block #A according to the size of the control information #A (for example, the number of bits included), so that the time-frequency resource block # can Meet the need for control information #A for transmission resources.

It should be understood that the methods and processes of the above-listed network device determining control information #A are merely exemplary, and the present application is not particularly limited, and the method and process may be similar to the prior art.

At S120, the network device divides the control information #A into m pieces of information, m≥1.

By way of example and not limitation, in the embodiment of the present application, according to the division manner corresponding to the time-frequency resource block #A (that is, an example of the first division manner, hereinafter, in order to facilitate understanding and distinction, it is referred to as division manner #A) For example, the network device may divide the control information #A according to the aggregation level corresponding to the division manner #A.

For example, if the aggregation level of the division method #A is 1, the control information #A is divided into one information fragment;

For another example, if the aggregation level of the division method #A is 2, the control information #A is divided into two information fragments;

For another example, if the aggregation level of the division method #A is 4, the control information #A is divided into 4 information fragments;

For another example, if the aggregation level of the division method #A is 8, the control information #A is divided into eight information fragments.

Alternatively, as an example and not by way of limitation, in the embodiment of the present application, the network device may further determine an aggregation degree currently used (ie, an example of the first degree of polymerization from among a plurality of (at least one) degrees of polymerization used by the communication system. Hereinafter, in order to facilitate understanding and distinction, it is referred to as the degree of polymerization #A), and the control information #A is divided according to the degree of polymerization #A.

Specifically, in the embodiment of the present application, the degree of polymerization may include one or more of the following meanings:

Meaning 1: In the embodiment of the present application, the degree of aggregation may be used to indicate the number of time-frequency resource units occupied by one information fragment.

By way of example and not limitation, the network device determines that the degree of aggregation corresponding to the time-frequency resource block #A (that is, an example of the first degree of aggregation, hereinafter referred to as aggregation degree #A for ease of understanding and differentiation) is n, That is, the n represents the number of time-frequency resource units occupied by each of the m pieces of information divided by the control information (ie, control information #A) carried by the time-frequency resource block #A.

In this case, in the embodiment of the present application, the network device may determine the number h of time-frequency resource units included in the time-frequency resource block #A according to the aggregation level of the division mode #A.

For example, if the aggregation level of the division manner #A is 1, the network device may determine the number of time-frequency resource units included in the time-frequency resource block #A, h=1;

For another example, if the aggregation level of the partition mode #A is 2, the network device may determine the number of time-frequency resource units included in the time-frequency resource block #A h=2;

For another example, if the aggregation level of the division mode #A is 4, the network device may determine the number of time-frequency resource units included in the time-frequency resource block #A h=4;

For another example, if the aggregation level of the division mode #A is 8, the network device may determine that the number of time-frequency resource units included in the time-frequency resource block #A is h=8;

Thus, the network device can determine, based on the number h as described above and the value n of the above-described degree of aggregation #A, that the number of pieces of information into which the control information #A is divided is m=h/n.

By way of example and not limitation, in the embodiment of the present application, the degree of polymerization (for example, the first degree of polymerization, that is, the degree of polymerization #A) may be, for example, any one of 1, 2, 4 or 8. .

Meaning 2: In the embodiment of the present application, the degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block.

Meaning 3: In the embodiment of the present application, the degree of aggregation is used to indicate the number of check sequences carried by one time-frequency resource block.

Meaning 4: In the embodiment of the present application, the degree of aggregation is used to indicate the number of information to be sent carried by one time-frequency resource block.

Further, in the meanings 2 to 4, the network device can determine the number indicated by the degree of aggregation #A as the number m of information pieces into which the control information #A is divided.

And, the network device can determine the number h of time-frequency resource units included in the time-frequency resource block #A according to the aggregation level of the division mode #A.

Thus, the network device can determine the number of time-frequency resource units on which an information slice is carried, n=h/m.

In the embodiment of the present application, after determining the number m of information fragments that the control information #A needs to be divided into, the network device may divide the control information #A into m information fragments in any manner, and record the information fragmentation. #1至信息片片#m, for example, the network device can make the size of the information fragment #1 to information fragment #m (that is, the number of bits included) the same.

At S130, the network device may determine m check sequences according to the m pieces of information divided as described above, where the m information fragments correspond to the m check sequences one by one, that is, the check sequence i and the information The slice i corresponds to i ∈ [1, m], and the check sequence i is generated based on the information slice i, and the check sequence i is used for the check of the information slice i.

The method and the process for generating the check sequence i according to the information fragment i may be similar. For example, the check sequence may be a check sequence used in a Cyclic Redundancy Check (CRC) mode, for example, The check sequence may be a check sequence used in a Parity Check (PC) mode.

The network device may generate, according to the m information fragments and the m check sequences, m to be sent information, where the to-be-sent information i may be generated by combining the check sequence i and the information fragment i, for example, The information to be transmitted is added after the information slice i, thereby generating the information i to be transmitted. It should be understood that the foregoing methods and processes for generating information to be sent are merely exemplary, and the present application is not limited thereto, and the process may be similar to the method and process for adding check bits in information in the prior art.

At S140, the network device may perform a polar code encoding process on the m pieces of information to be transmitted to generate a symbol sequence #A (ie, an example of a symbol sequence).

By way of example and not limitation, in the embodiment of the present application, the network device may first, based on the coding mode #A, for each information to be sent (specifically, the information fragment and the check sequence included in each information to be transmitted. ) encoding (ie, first mode encoding). And, the information to be transmitted that has been encoded by the first mode is combined (for example, serially combined), and the combined information to be transmitted is subjected to a polar code encoding process.

By way of example and not limitation, in the embodiment of the present application, the first mode coding may include, but is not limited to, any one of the following coding modes:

Polar code encoding, Tail-Biting Convolutional Codes (TBCC) encoding, Low Density Parity Check Code (LDPC) code encoding, or Turbo code encoding.

Alternatively, in the embodiment of the present application, the network device may further merge (for example, serially merge) the information to be transmitted, and perform a polar code encoding process on the combined information to be sent.

At the 87th meeting of the 3rd Generation Partnership Project (3GPP) Radio Access Network (RAN), the polar Polar code was officially received as a 5G enhanced mobile broadband (eMBB) scenario. The channel coding scheme of the uplink and downlink control channels. The polarity code is applied to the uplink and downlink control channels, and there is room for performance improvement in decoding.

The following is a brief introduction to the Polar code.

Communication systems usually use channel coding to improve the reliability of data transmission to ensure the quality of communication. The Polar code proposed by Turkish professor Arikan is the first code that theoretically proves to achieve Shannon capacity and has low coding and decoding complexity. The Polar code is also a linear block code whose coding matrix is G _N and the encoding process is x ₁ ^N = u ₁ ^N G _N , where u ₁ ^N = (u ₁ , u ₂ , ..., u _N ) is a a binary line vector of length N (ie, code length); G _N is an N×N matrix, and

Defined as the Kronecker product of log ₂ N matrices F ₂ . Above matrix

In the encoding process of the Polar code, a part of the bits in u ₁ ^N are used to carry information, called a set of information bits, and the set of indexes of these bits is recorded as

The other part of the bits is set to a fixed value pre-agreed by the transceiver, which is called a fixed bit set or a frozen bit set.

Complement

Said. The encoding process of the Polar code is equivalent to:

Here, G _N (A) is the set of G _N

The sub-matrices obtained from those rows corresponding to the index, G _N (A ^C ) is the set of G _N

The sub-matrices obtained from those rows corresponding to the index.

Is the set of information bits in u ₁ ^N , the number is K;

It is a fixed set of bits in u ₁ ^N , the number of which is (NK), which is a known bit. These fixed bits are usually set to 0, but the fixed bits can be arbitrarily set as long as the transceiver end pre-agreed. Thus, the encoded output of the Polar code can be simplified to:

Here

Is the set of information bits in u ₁ ^N ,

a row vector of length K, ie

|·| indicates the number of elements in the collection, and K is the size of the information block.

Is the matrix G _N by the set

The submatrices obtained from the rows corresponding to the index,

Is a K × N matrix.

The construction process of the Polar code is a collection

The selection process determines the performance of the Polar code. The construction process of the Polar code is generally: determining that there are N polarized channels in total according to the length N of the mother code, respectively corresponding to N rows of the coding matrix, calculating the reliability of the polarized channel, and the first K polarizations with higher reliability. Channel index as a collection

Element, the index corresponding to the remaining (NK) polarized channels as the index set of fixed bits

Elements. set

Determine the location of the information bits, the collection

The position of the fixed bit is determined.

It can be seen from the coding matrix that the original Polar code (parent code) has a code length of 2, which is an integer power of 2, and in practice, a Polar code of arbitrary code length needs to be implemented by rate matching.

In order to improve the performance of the Polar code, the information bit set is first checked and precoded, and then Polar coded. There are two common types of parity precoding, namely Cyclic Redundancy Check (CRC) cascading Polar encoding, or Parity Check (PC) cascading Polar encoding. Currently, Polar encoding includes: Airkan traditional Polar encoding and CA Polar encoding and PC Polar encoding.

For the Airkan traditional Polar coding description in Fig. 7, {u1, u2, u3, u5} is set as a fixed bit set, {u4, u6, u7, u8} is set as an information bit set, and 4 in the information vector of length 4 is set. The bit information bits are encoded into 8-bit coded bits.

For the CA Polar encoding in Fig. 8, {u1, u2} is set as a fixed bit set, {u3, u4, u5, u6} is set as a set of information bits, and {u7, u8} is a set of CRC bits. Among them, the value of {u7, u8} is obtained by CRC of {u3, u4, u5, u6}.

For CA Polar coding, a CRC-assisted Successive Cancellation List (CA-SCL) decoding algorithm is employed. The CA-SCL decoding algorithm selects the path through which the CRC passes as the decoding output in the candidate path of the SCL decoding output by the CRC check.

For the PC Polar encoding in Fig. 9, {u1, u2, u5} is set as a fixed bit set, {u3, u4, u6, u7} is set as an information bit set, and {u7} is a PC fixed bit set. Among them, the value of {u7} is obtained by X0, u6} XOR.

At S150, the network device may send the symbol sequence #A obtained by the polar coding process through the time-frequency resource block #A. For example, in the embodiment of the present application, the network device may be carried according to an information fragment determined as described above. The number n of time-frequency resource units is determined by the symbols (or code words) in the symbol sequence #A corresponding to each information to be transmitted i (or, information slice i and check sequence i). The n time-frequency units carried in.

Therefore, at S160, the terminal device may determine a time-frequency resource used by the communication system to transmit control information, and determine a possible division manner of the time-frequency resource, and a time-frequency resource block divided according to each division manner, for example, Time-frequency resource block #0 to time-frequency resource block #14 in FIG.

And, at S160, the terminal device can determine the number of information segments (or information to be transmitted or check sequences) carried by each time-frequency resource block.

By way of example and not limitation, in the embodiment of the present application, the terminal device sends information to be sent by each time-frequency resource block according to a division manner corresponding to each time-frequency resource block, for example, an aggregation level corresponding to each division manner. quantity.

Specifically, if the time-frequency resource used for transmitting the control information can be divided into t time-frequency resource blocks, the terminal device can determine the division mode corresponding to the time-frequency resource block j, j ∈ [1, t], t ≥ 3.

For example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 1, the network device may determine that the time-frequency resource block j carries one information fragment (or one information to be transmitted, or one parity). sequence);

For example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 2, the network device may determine that the time-frequency resource block j carries 2 pieces of information (or 2 pieces of information to be sent, or 2 schools). Sequence of inspection);

For another example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 4, the network device may determine that the time-frequency resource block j carries 4 pieces of information (or 4 pieces of information to be sent, or 4 schools). Sequence of inspection);

For another example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 8, the network device may determine that the time-frequency resource block j carries 8 information fragments (or 8 to-be-sent information, or 8 schools). Sequence of inspection).

Alternatively, as an example and not by way of limitation, in the embodiment of the present application, the network device may further determine the degree of polymerization currently used (for example, the above-mentioned degree of aggregation #A) from among a plurality of (at least one) degrees of polymerization used by the communication system. And, the terminal device determines, according to the degree of aggregation #A, the number of pieces of information (or information to be transmitted or a check sequence) carried by each time-frequency resource block.

By way of example and not limitation, the terminal device may determine that the value of the degree of aggregation (eg, the degree of aggregation #A) corresponding to the time-frequency resource block j is n, that is, the n represents the control information carried by the time-frequency resource block j. Each of the plurality of information fragments allocates the number of time-frequency resource units occupied.

In this case, in the embodiment of the present application, the network device may determine the number h of time-frequency resource units included in the time-frequency resource block j according to the aggregation level of the partition mode corresponding to the time-frequency resource block j.

For example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 1, the network device may determine that the number of time-frequency resource units included in the time-frequency resource block j is h=1;

For another example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 2, the network device may determine the number of time-frequency resource units included in the time-frequency resource block j h=2;

For example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 4, the network device may determine the number of time-frequency resource units included in the time-frequency resource block j h=4;

For example, if the aggregation level of the partitioning mode corresponding to the time-frequency resource block j is 8, the network device may determine the number of time-frequency resource units included in the time-frequency resource block j h=8;

Therefore, the terminal device can determine the number of information fragments carried by the time-frequency resource block j according to the value n of the degree of aggregation corresponding to the quantity h and the time-frequency resource block j as described above.

By way of example and not limitation, in the embodiment of the present application, the value of the degree of polymerization may be, for example, any one of 1, 2, 4 or 8.

Moreover, in the meanings 2 to 4, the network device may determine the number of the aggregation degree indications as the number of information fragments carried by the time-frequency resource block j.

Moreover, the terminal device can determine the number of time-frequency resource units carried by one information fragment carried by the time-frequency resource block j.

Therefore, at S170, the terminal device may perform blind detection for the time-frequency resource block j (specifically, blind detection of the polar code decoding mode) according to the number of information fragments carried by the time-frequency resource block j, or The terminal device can perform the polar code decoding process on the symbol sequence carried on the time-frequency resource block j according to the number of information fragments carried by the time-frequency resource block j.

Among them, for PC Polar coding, the decoding algorithm is based on the SCL decoding algorithm, and uses the fixed bit set of PC to complete the process of sorting and pruning in the decoding process, and finally outputs the most reliable path.

It should be noted that, in the embodiment of the present application, the control information #A may be that the symbol sequence may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol sequence.

The terminal device may demap and demodulate the symbol sequence to obtain a Log Likelihood Ratio (LLR) sequence. And, the terminal device can perform blind detection based on the LLR sequence.

Each time the blind check needs to complete the Polar decoding and CRC check, if the CRC check passes, the DCI is successfully obtained, the blind check process ends, and if the CRC check fails, the blind check is continued.

In the embodiment of the present application, the terminal device may determine the bit position and value of the terminal identifier, and may use the bit position and value of the terminal identifier as the input parameters of the decoding. The terminal identifier may be an RNTI, and the length of the RNTI is greater than or equal to 16 bits.

The bit position of the terminal identifier includes two possible implementation manners.

When Polar encoding uses CA Polar, the bit position of the terminal identification includes the location of the CRC sequence and the location of the fixed set of bits. As shown in Figure 10.

When the Polar code uses PC Polar, the bit position of the terminal identification includes the position of the CRC sequence and the position of the parity fixed bit set. As shown in Figure 11.

In the embodiment of the present application, the LLR sequence is used as an input to the SCL decoder. When decoding the decoder, the decoding path is continuously extended, and the decoder reserves, for example, 8 surviving paths. For PC Polar, 8 surviving paths are sorted according to the path metric, and the decoder finally outputs the path metric. The path with the smallest value and the CRC check for the path with the smallest Path Metric (PM) value. For CA Polar, the 8 surviving paths are sorted according to the path metric. The decoder outputs 8 surviving paths, and the CRC is checked according to the path metric from small to large, until the 8 surviving paths are not passed. Pass, return the surviving path with the smallest path metric.

It should be noted that the number of coding sequences may be 4 or 8, as long as the number of coding subsequences does not exceed the width limit of the decoder.

Optionally, the decoding method may also adopt a Maximum Likelihood (ML) compensation decoder. For example, when the number of extended paths reaches the upper limit L=8, the pruning needs to be performed after expanding again, that is, 8 paths with better PMs are selected from the 32 paths as surviving paths. In addition, in the embodiment of the present application, the terminal device may perform ML decoding of an additional bit, that is, when the extended path is increased to 16, no pruning is performed, and then the first-level decoding is extended to 32 paths. Pruning, leaving only 8 surviving paths.

The terminal device sequentially performs blind detection control information on the nested t time-frequency resource blocks.

It is assumed that the number of CCEs occupied by the detected time-frequency resource block j is y, and the aggregation level of the time-frequency resource block j is b, the terminal device can determine the number of check sequences theoretically carried by the time-frequency resource block j z= y/b.

The terminal device divides the received information of the time-frequency resource block j (a sequence obtained by de-mapping the symbol sequence, for example, an LLR sequence) into z shares, and performs polar code decoding on the z-sequence to obtain the first Receiving information.

Thereafter, the terminal device performs coding (for example, turbo code decoding) corresponding to the first mode encoding (for example, turbo code encoding) on the first received information to obtain the first control information.

The terminal device detects a check sequence in the first part of the control information, and obtains a check result of the first part.

If the verification result of the first copy fails, the next time-frequency resource block (for example, the time-frequency resource block j+1) is continuously detected according to the above steps.

If the verification result of the first part is successful, the terminal device performs first mode coding (for example, turbo code coding) on the first part of the control information, to obtain the first part of the coding information, for the first part. The encoded information and the z-sequence are subjected to polar code decoding to obtain a second received information.

The first control information decoding process is repeated until the verification result of one of the z-part sequences fails.

If the verification result of the certain one fails, the next time-frequency resource block (for example, the time-frequency resource block j+1) is continuously detected according to the above steps.

If the verification result of the one copy is successful, the control information of the z-parts is obtained to obtain all the control information, and the blind detection ends.

By way of example and not limitation, for example, it is assumed that the time-frequency resource used by the communication system for transmitting control information includes eight time-frequency resource units (for example, eight CCEs, denoted as CCE #0 to CCE #7).

Moreover, it is assumed that the number of information fragments carried by the time-frequency resource block #0 to the time-frequency resource block #7 determined as described above is 1, and the information fragmented by the time-frequency resource block #8 to the time-frequency resource block #11 is fragmented. The number of information fragments carried by the time-frequency resource block #12 to the time-frequency resource block #13 is 4, and the number of information fragments carried by the time-frequency resource block #14 is 8.

In other words, the aggregation degree n corresponding to the time-frequency resource block #0 to the time-frequency resource block #14 is 1, that is, the time occupied by each information segment carried by the time-frequency resource block #0 to the time-frequency resource block #14. The number of units is 1.

Then, the terminal device can determine the LLRs of the eight CCEs, perform f operations on the LLRs of the eight CCEs, and save the intermediate result of each segment.

Thereafter, the terminal device may use the time-frequency resource block to which the LLR of the CCE#0 belongs according to the information fragment to which the information belongs is time-frequency resource block #14, time-frequency resource block #12, time-frequency resource block #8, and time. The order of the frequency resource block #0 is decoded separately. In other words, the terminal device can decode the LLR of the CCE#0, and can use the decoder whose number of information fragments is 8, 4, 2, and 1, respectively, if the number of information fragments is 1 If the decoding succeeds, the terminal device may determine that the time-frequency resource block #0 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #8, the time-frequency resource block #12, and the time-frequency resource block #14 do not carry the control information. .

Then, the terminal device can decode the LLRs of the CCE#2 according to the time-frequency resource blocks to which the information-segmented pieces belong to the time-frequency resource block #2 and the time-frequency resource block #9. In other words, the terminal device can decode the LLR of CCE#2, and the number of information fragments can be decoded by the decoders of 2 and 1 respectively. If the number of information fragments is 1, the decoding of the decoder is successful. Then, the terminal device may determine that the time-frequency resource block #2 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #9 does not carry the control information.

Thereafter, the terminal device may use the time-frequency resource block to which the time-frequency resource block to which the LLR of the CCE#4 belongs is the time-frequency resource block #13, the time-frequency resource block #10, and the time-frequency resource block #4. Decode separately. In other words, the terminal device can decode the LLR of CCE#4 by using a decoder whose number of information fragments is 4, 2, 1, respectively, if the number of information fragments is 1 decoder decoding. If the terminal device is successful, the terminal device may determine that the time-frequency resource block #4 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #10 and the time-frequency resource block #13 do not carry the control information.

Then, the terminal device can decode the LLRs of the CCE#6 according to the time-frequency resource blocks to which the information-segmented fragments belong to the time-frequency resource block #6 and the time-frequency resource block #11. In other words, the terminal device can decode the LLR of the CCE#6 by using a decoder whose number of information fragments is 2 and 1, respectively. If the decoder of the number of information fragments is 1 successfully decoded, Then, the terminal device may determine that the time-frequency resource block #6 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #11 does not carry the control information.

Finally, the terminal device can decode the LLRs of CCE #1, CCE #3, CCE #5, and CCE #7, respectively. Assuming that all decoding is successful, the terminal device may determine that the time-frequency resource block #1, the time-frequency resource block #3, the time-frequency resource block #5, and the time-frequency resource block #7 carry control information.

The above is a total of 15 decodings, and the number is the same as the conventional scheme. However, since the above-mentioned degree of polymerization n is 1, each decoding is a length corresponding to the code length only when the degree of aggregation n is 1, and the calculation of the LLR processing is performed. The amount is small, so the overall computational complexity is greatly reduced.

In addition, it is assumed that the number of information fragments carried by the time-frequency resource block #0 to the time-frequency resource block #7 determined as described above is 1, and the information fragment carried by the time-frequency resource block #8 to the time-frequency resource block #11 is fragmented. The number of information fragments carried by the time-frequency resource block #12 to the time-frequency resource block #13 is 1, and the number of information fragments carried by the time-frequency resource block #14 is 2.

In other words, the aggregation degree corresponding to the time-frequency resource block #0 to the time-frequency resource block #11 is 1, that is, the time-frequency resource occupied by each information slice carried by the time-frequency resource block #0 to the time-frequency resource block #11 The number of units is 1; the degree of aggregation corresponding to the time-frequency resource block #12 to the time-frequency resource block #14 is 4, that is, each information fragment carried by the time-frequency resource block #12 to the time-frequency resource block #14 is occupied. The number of time-frequency resource units is 4.

In this case, the maximum number of information fragments (or information to be transmitted or check sequences) carried on each time-frequency resource block is 2.

Then, the terminal device can decode the LLRs of the CCEs #0 to CCE#3 according to the time-frequency resource blocks to which the information-segmented pieces belong to the time-frequency resource block #14 and the time-frequency resource block #12. . In other words, the terminal device can decode the LLRs of the CCEs #0 to CCE#3 by using the decoders whose number of information fragments is 2 and 1, respectively. If the decoding fails, the terminal device can determine the time. The frequency resource block #0 or the time-frequency resource block #8 carries control information, and the corresponding terminal device can determine that the time-frequency resource block #12 and the time-frequency resource block #14 do not carry control information.

After that, the terminal device can decode the LLRs of the CCEs #4 to CCE#7 according to the case where the time-frequency resource blocks to which the information fragments are carried are the time-frequency resource blocks #13. In other words, the terminal device can decode the LLR of the CCE#4 to CCE#7 by using the decoder of the number of information fragments 1. If the decoding fails, the terminal device can determine the time-frequency resource block #4 or The time-frequency resource block #10 carries control information, and the corresponding terminal device can determine that the time-frequency resource block #13 does not carry control information.

The terminal device can decode the LLRs of the CCE#0 according to the time-frequency resource blocks to which the information-segmented fragments belong to the time-frequency resource block #0 and the time-frequency resource block #8. In other words, the terminal device can decode the LLR of CCE#0, and the number of information fragments can be decoded by the decoders of 2 and 1 respectively. If the number of information fragments is 1, the decoder is successfully decoded. Then, the terminal device may determine that the time-frequency resource block #0 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #8 does not carry the control information.

Then, the terminal device can decode the LLRs of the CCE#2 according to the time-frequency resource blocks to which the information fragments to be carried belong to the time-frequency resource block #2 and the time-frequency resource block #9. In other words, the terminal device can decode the LLR of CCE#2, and the number of information fragments can be decoded by the decoders of 2 and 1 respectively. If the number of information fragments is 1, the decoding of the decoder is successful. Then, the terminal device may determine that the time-frequency resource block #2 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #9 does not carry the control information.

Then, the terminal device can decode the LLRs of the CCE#4 according to the time-frequency resource blocks to which the information-segmented pieces belong to the time-frequency resource block #4 and the time-frequency resource block #10. In other words, the terminal device can decode the LLR of the CCE#4 by using a decoder whose number of information fragments is 2 and 1, respectively. If the decoder of the number of information fragments is 1 successfully decoded, Then, the terminal device may determine that the time-frequency resource block #4 carries the control information, and the corresponding terminal device may determine that the time-frequency resource block #10 does not carry the control information.

Finally, the terminal device can decode the LLRs of CCE #1, CCE #3, CCE #5, and CCE #7, respectively. Assuming that all decoding is successful, the terminal device can determine that time-frequency resource block #1, time-frequency resource block #3, time-frequency resource block #5, and time-frequency resource block #7 carry control information.

The above is a total of 15 decodings, the number is the same as the conventional scheme. However, since the above aggregation level is 1, each decoding is a length corresponding to the code length only when the aggregation level is 1 or 4, and the calculation of the LLR processing is performed. The amount is small, so the overall computational complexity is greatly reduced.

FIG. 12 is a schematic block diagram of an apparatus 200 for transmitting control information according to an embodiment of the present application, where the apparatus 300 for transmitting control information may correspond to (for example, may be configured or itself) a network device described in the foregoing method 100, In addition, each module or unit in the device 200 for transmitting control information is used to perform each action or process performed by the network device in the above method 100. Here, in order to avoid redundancy, detailed description thereof will be omitted.

FIG. 13 is a schematic block diagram of an apparatus 300 for transmitting control information according to an embodiment of the present application. The apparatus 300 for transmitting control information may correspond to (for example, may be configured or itself) a terminal device described in the foregoing method 100. In addition, each module or unit in the device 300 for transmitting control information is used to perform each action or process performed by the terminal device in the above method 300. Here, in order to avoid redundancy, detailed description thereof will be omitted.

As shown in FIG. 14, the present application also provides an apparatus 400 that can transmit control information. The device 400 for transmitting control information may be an encoding device or a DSP or ASIC or chip that implements an associated encoding function. The device 400 includes:

The memory 401 is configured to store a program, where the memory may be a random access memory (RAM) or a read only memory (ROM) or a flash memory, where the memory may be located in the communication device alone or in the communication device. Located inside the processor 402.

a processor 402, configured to execute the program stored by the memory, when the program is executed, the processor is capable of determining, from the plurality of time-frequency resource blocks, a first one for transmitting first control information a time-frequency resource block; the first control information is divided into m pieces of information, m≥1; according to the m pieces of information, m pieces of information to be transmitted are generated, and the m pieces of information and the m pieces are to be sent The information to be sent includes a corresponding information fragment, wherein the information to be transmitted i includes an information fragment i and a check sequence i, and the check sequence i is generated according to the information fragment i. , i ∈ [1, m]; performing polar polar code encoding on the m pieces of information to be transmitted to generate a symbol sequence.

The transceiver 403 is configured to send the symbol sequence by using the first time-frequency resource block.

By way of example and not limitation, in the embodiment of the present application, the communication connection is implemented between the transceiver 403, the memory 401, and the processor 402 by, for example, a bus or the like.

It should be noted that the method performed by the processor 402 is consistent with the content of the method performed by the foregoing network device, and details are not described herein.

As shown in FIG. 15, the present application also provides an apparatus 500 that can transmit control information. The device 500 for transmitting control information may be a decoding device or a DSP or ASIC or chip that implements a related decoding function. The device 500 includes:

The transceiver 501 is configured to receive a signal carried on a time-frequency resource for transmitting control information.

The memory 502 is configured to store a program; wherein the memory may be a RAM or a ROM or a flash memory, wherein the memory may be located in the communication device alone or in the processor 503.

a processor 503, configured to execute the program stored by the memory, when the program is executed, the processor is capable of determining a quantity of information to be transmitted carried by each time-frequency resource block, where each to be sent The information includes an information fragment and a check sequence; according to the quantity of information to be sent carried by each time-frequency resource block, based on the polar polar code decoding mode, the symbol sequence sent by the network device through the time-frequency resource is performed. Blind detection processing to obtain first control information, wherein the symbol sequence is generated by the network device performing polar polar code encoding on the m to-be-sent information, and the m pieces of information to be sent and the m pieces of information are fragmented. Correspondingly, each information to be transmitted includes a corresponding information fragment, and the information to be transmitted i includes an information fragment i and a check sequence i, and the check sequence i is generated according to the information fragment i, i∈[1 , m], the m information fragments are generated by the network device segmenting the first control information, and m≥1.

By way of example and not limitation, in the embodiment of the present application, the communication connection is implemented between the transceiver 501, the memory 502, and the processor 503 by, for example, a bus or the like.

It should be noted that the method performed by the processor 502 is consistent with the content of the method performed by the foregoing terminal device, and details are not described herein.

It should be noted that the above method embodiments may be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It is to be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in various embodiments of the embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the execution order of each process should be determined by its function and internal logic, and should not be applied to this application. The implementation of the embodiments constitutes any limitation.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present application, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily adopt the technical scope disclosed in the embodiments of the present application. All changes or substitutions are contemplated to be within the scope of the embodiments of the present application.

Claims

A method for transmitting control information, which is implemented in a communication system that divides time-frequency resources for transmitting control information by using at least two division manners, and multiple time-frequency resources divided by the at least two division manners Blocks are nested structures, and

The method includes:

The network device determines, from the plurality of time-frequency resource blocks, a first time-frequency resource block for transmitting the first control information;

The network device divides the first control information into m pieces of information, m≥1;

The network device generates m pieces of to-be-sent information according to the m pieces of information, and the m pieces of information are in one-to-one correspondence with the m pieces of to-be-sent information, and each information to be sent includes the corresponding information points. a slice, wherein the information to be transmitted i includes an information slice i and a check sequence i, the check sequence i is generated according to the information slice i, i ∈ [1, m];

The network device performs polarity polar code encoding on the m pieces of to-be-sent information to generate a symbol sequence;

The network device sends the sequence of symbols through the first time-frequency resource block.
The method according to claim 1, wherein the network device divides the first control information into m pieces of information, including:

Determining, by the network device, a first degree of aggregation from at least one degree of aggregation used by the communication system, where the degree of aggregation is used to indicate a quantity of time-frequency resource units occupied by one piece of information, or The degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block, or the degree of aggregation is used to indicate the number of check sequences carried by one time-frequency resource block;

The network device divides the first control information into m pieces of information according to the first degree of aggregation.
The method according to claim 2, wherein the network device divides the first control information into m pieces of information according to the first degree of aggregation, including:

Determining, by the network device, the number of time-frequency resource units included in the first time-frequency resource block according to a division manner corresponding to the first time-frequency resource block;

The network device divides the first control information into m pieces of information according to the number of time-frequency resource units included in the first time-frequency resource block and the first degree of aggregation.
The method according to claim 2 or 3, wherein the communication system uses one degree of aggregation, and the number of time-frequency resource units occupied by one information slice indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the two types of aggregation degrees is 1, 4; or

The communication system uses four types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the four types of aggregation degrees is 1, 2, 4, 8;

The communication system uses a degree of aggregation, and the number of information fragments carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the two types of aggregation degrees is 1, 2; or

The communication system uses four types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the four types of aggregation degrees is 1, 2, 4, 8 respectively;

The communication system uses a degree of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the two types of degrees of aggregation is 1, 2; or

The communication system uses four types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the four types of degrees of aggregation is 1, 2, 4, and 8, respectively.
The method according to any one of claims 1 to 4, wherein the network device performs polar polar code encoding on the m pieces of to-be-sent information, including:

The network device performs the first mode encoding on the m to-be-sent information;

The network device performs polar code encoding on the m to-be-sent information encoded by the first mode.
The method according to claim 5, wherein the first mode coding comprises any one of a polar code coding, a tail biting convolutional code TBCC coding, a low density parity check LDPC code coding, or a turbo Turbo code coding. .
The method according to claim 5 or 6, wherein the method further comprises:

The network device sends the indication information encoded by the first mode.
A method for transmitting control information, which is implemented in a communication system that divides time-frequency resources for transmitting control information by using at least two division manners, and multiple time-frequency resources divided by the at least two division manners Blocks are nested structures, and

The method includes:

Receiving, by the time-frequency resource, the symbol sequence sent by the network device, where the symbol sequence is generated by the network device performing polar polar code encoding on the m to-be-sent information, where the m The sending information is in one-to-one correspondence with the m information fragments, and each to-be-sent information includes the corresponding information fragment, and the to-be-sent information i includes the information fragment i and the check sequence i, and the check sequence i is according to the The information fragment i is generated, i ∈ [1, m], the m information fragments are generated by the network device segmenting the first control information, m ≥ 1;

Determining, by the terminal device, the quantity of information to be sent that is carried by each time-frequency resource block, where each to-be-sent information includes an information fragment and a check sequence;

The terminal device performs blind detection processing on the symbol sequence according to the polarity polar code decoding manner according to the quantity of information to be transmitted that is carried by each time-frequency resource block, to obtain the first control information.
The method according to claim 8, wherein the terminal device determines the number of information to be sent carried by each time-frequency resource block, including:

Determining, by the terminal device, a degree of aggregation corresponding to each time-frequency resource block, where the degree of aggregation is used to indicate a time-frequency resource unit occupied by one information fragment, from the at least one degree of aggregation used by the communication system. The quantity, or the degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block, or the degree of aggregation is used to indicate the number of check sequences carried by one time-frequency resource block;

The terminal device determines the number of information to be sent carried by each time-frequency resource block according to the aggregation degree corresponding to each time-frequency resource block.
The method according to claim 9, wherein the terminal device determines the number of to-be-sent information carried by each time-frequency resource block according to the aggregation degree corresponding to each time-frequency resource block, including:

Determining, by the terminal device, the number of time-frequency resource units included in each time-frequency resource block according to a division manner corresponding to each time-frequency resource block;

The terminal device determines the number of information to be sent carried by each time-frequency resource block according to the number of time-frequency resource units included in each time-frequency resource block and the degree of aggregation corresponding to each time-frequency resource block.
The method according to claim 9 or 10, wherein the communication system uses one degree of aggregation, and the number of time-frequency resource units occupied by one piece of information indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the two types of aggregation degrees is 1, 4; or

The communication system uses four types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the four types of aggregation degrees is 1, 2, 4, 8;

The communication system uses a degree of aggregation, and the number of information fragments carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the two types of aggregation degrees is 1, 2; or

The communication system uses four types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the four types of aggregation degrees is 1, 2, 4, 8 respectively;

The communication system uses a degree of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the two types of degrees of aggregation is 1, 2; or

The communication system uses four types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the four types of degrees of aggregation is 1, 2, 4, and 8, respectively.
The method according to any one of claims 8 to 11, wherein the terminal device performs the location based on the number of information to be transmitted carried by each time-frequency resource block based on the polar polar code decoding mode. The symbol sequence is subjected to blind detection processing, including:

The terminal device performs polar code decoding on the to-be-sent information according to the quantity of information to be sent that is carried by each time-frequency resource block;

The terminal device performs the first mode decoding on the to-be-transmitted information that is decoded by the polar code.
The method according to claim 12, wherein said first mode decoding comprises polar code decoding, tail biting convolutional code TBCC decoding, low density parity check LDPC code decoding or turbo Turbo code decoding. Any of them.
The method according to claim 12 or 13, wherein the method further comprises:

The terminal device receives the indication information of the first mode decoding sent by the network device.
An apparatus for transmitting control information, characterized in that, in a communication system configured to divide time-frequency resources for transmitting control information by using at least two division manners, a plurality of time-frequency resources divided by the at least two division manners Blocks are nested structures, and

The device includes:

a processing unit, configured to determine, from the plurality of time-frequency resource blocks, a first time-frequency resource block for transmitting first control information, where the first control information is divided into m pieces of information, And generating m pieces of information to be sent according to the m pieces of information, wherein the m pieces of information are in one-to-one correspondence with the m pieces of information to be sent, and each piece of information to be sent includes the corresponding information piece, wherein The information to be transmitted i includes an information slice i and a check sequence i, and the check sequence i is generated according to the information slice i, i ∈ [1, m], for the m to be sent The information is encoded by a polar polar code to generate a symbol sequence, m≥1;

a communication unit, configured to send the sequence of symbols by using the first time-frequency resource block.
The apparatus according to claim 15, wherein the processing unit is specifically configured to determine a first degree of polymerization from at least one degree of polymerization used by the communication system, wherein the degree of aggregation is used to indicate a The number of time-frequency resource units occupied by the information fragment, or the degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block, or the degree of aggregation is used to indicate that a time-frequency resource block is carried. The number of check sequences is used to divide the first control information into m pieces of information according to the first degree of polymerization.
The apparatus according to claim 16, wherein the processing unit is configured to determine, according to a division manner corresponding to the first time-frequency resource block, a time-frequency resource unit included in the first time-frequency resource block. The quantity is used to divide the first control information into m pieces of information according to the number of time-frequency resource units included in the first time-frequency resource block and the first degree of aggregation.
The apparatus according to claim 16 or 17, wherein the communication system uses one degree of aggregation, and the number of time-frequency resource units occupied by one piece of information indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the two types of aggregation degrees is 1, 4; or

The communication system uses four types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the four types of aggregation degrees is 1, 2, 4, 8;

The communication system uses a degree of aggregation, and the number of information fragments carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the two types of aggregation degrees is 1, 2; or

The communication system uses four types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the four types of aggregation degrees is 1, 2, 4, 8 respectively;

The communication system uses a degree of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the two types of degrees of aggregation is 1, 2; or

The communication system uses four types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the four types of degrees of aggregation is 1, 2, 4, and 8, respectively.
The apparatus according to any one of claims 15 to 18, wherein the processing unit is configured to perform, by using the first mode encoding, the m pieces of information to be sent, The m pieces of information to be transmitted are coded by the polar code.
The apparatus according to claim 19, wherein said first mode coding comprises any one of a polar code coding, a tail biting convolutional code TBCC coding, a low density parity check code LDPC coding, or a turbo Turbo code coding. .
The apparatus according to claim 19 or 20, wherein the communication unit is further configured to send the indication information of the first mode encoding.
An apparatus for transmitting control information, characterized in that, in a communication system configured to divide time-frequency resources for transmitting control information by using at least two division manners, a plurality of time-frequency resources divided by the at least two division manners Blocks are nested structures, and

The device includes:

a communication unit, configured to receive, by using the time-frequency resource, a sequence of symbols sent by a network device, where the symbol sequence is generated by performing, by the network device, a polar code of the to-be-transmitted information, The m pieces to be sent are in one-to-one correspondence with the m pieces of information, and each piece of information to be transmitted includes the corresponding piece of information. The information to be transmitted i includes the information piece i and the check sequence i, and the check sequence i is According to the information fragment i, i ∈ [1, m], the m information fragments are generated by the network device segmenting the first control information, m ≥ 1;

a processing unit, configured to determine a quantity of information to be sent that is carried by each time-frequency resource block, where each information to be sent includes an information fragment and a check sequence; and is used to be carried according to each time-frequency resource block The number of the transmitted information is based on the polar polar code decoding mode, and the symbol sequence is subjected to blind detection processing to obtain the first control information.
The apparatus according to claim 22, wherein the processing unit is specifically configured to determine, according to at least one degree of polymerization used by the communication system, a degree of aggregation corresponding to each time-frequency resource block, wherein The degree of aggregation is used to indicate the number of time-frequency resource units occupied by one information fragment, or the degree of aggregation is used to indicate the number of information fragments carried by one time-frequency resource block, or the degree of aggregation is used to indicate a The number of check sequences carried by the time-frequency resource block is used to determine the number of information to be sent carried by each time-frequency resource block according to the corresponding aggregation degree of each time-frequency resource block.
The apparatus according to claim 23, wherein the processing unit is configured to determine, according to a division manner corresponding to each time-frequency resource block, a quantity of time-frequency resource units included in each time-frequency resource block, And determining, according to the number of time-frequency resource units included in each time-frequency resource block, and each time-frequency resource block including a corresponding aggregation degree, determining the number of information to be sent carried by each time-frequency resource block.
The apparatus according to claim 23 or 24, wherein the communication system uses one degree of aggregation, and the number of time-frequency resource units occupied by one piece of information indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the two types of aggregation degrees is 1, 4; or

The communication system uses four types of aggregation degrees, and the number of time-frequency resource units occupied by one information fragment indicated by the four types of aggregation degrees is 1, 2, 4, 8;

The communication system uses a degree of aggregation, and the number of information fragments carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the two types of aggregation degrees is 1, 2; or

The communication system uses four types of aggregation degrees, and the number of information fragments carried by one time-frequency resource block indicated by the four types of aggregation degrees is 1, 2, 4, 8 respectively;

The communication system uses a degree of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the one degree of aggregation is 1; or

The communication system uses two types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the two types of degrees of aggregation is 1, 2; or

The communication system uses four types of degrees of aggregation, and the number of check sequences carried by one time-frequency resource block indicated by the four types of degrees of aggregation is 1, 2, 4, and 8, respectively.
The device according to any one of claims 22 to 25, wherein the processing unit is configured to perform a polar code on the to-be-sent information according to the quantity of information to be sent carried by each time-frequency resource block. The decoding is used to perform the first mode decoding on the information to be sent after being decoded by the polar code.
The apparatus according to claim 26, wherein said first mode decoding comprises polar code decoding, tail biting convolutional code TBCC decoding, low density parity check code LDPC decoding, or turbo Turbo code decoding. Any of them.
The apparatus according to claim 26 or 27, wherein the communication unit is further configured to receive the indication information of the first mode decoding sent by the network device.