Information transmission method and device, equipment and storage medium

Abstract

Embodiments of the present application provide an information transmission method, device and equipment and a storage medium, which are applied to the technical field of communication. The method comprises the following steps: a network device (a base station) first determines scheduling information of a data channel, and the data channel carries system messages, then sends indication information of the scheduling information through a physical broadcast channel, and correspondingly, a terminal device determines the scheduling information of the data channel according to the indication information received through the physical broadcast channel. In the embodiments of the present application, the scheduling information comprises at least one of frequency domain resource information and time domain resource information. In this way, the terminal device can obtain the scheduling information of the data channel carrying the system messages without detecting a control channel, so that the detection complexity is simplified and the power consumption of the terminal is reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an information transmission method, apparatus, device, and storage medium. Background Technology

[0002] The new radio-light (NR-light) system was proposed to expand and optimize 5G support for the Internet of Things. It can meet the needs of services other than enhanced mobile broadband (eMBB) services. The terminals that support these services can be called low-capability terminals, which have the characteristics of reduced bandwidth, relaxed processing time, and reduced number of antennas, thereby reducing power consumption and lowering costs.

[0003] In the initial access process of the existing NR system, the terminal device first receives the physical downlink control channel (PDCCH) through the master information block (MIB). This PDCCH is a type 0 PDCCH, which carries the control resource set (CORESET) and search space information, thereby enabling it to obtain the scheduling information of the physical downlink shared channel (PDSCH) carrying system information block 1 (SIB1).

[0004] However, since the NR-light system supports low-capability terminals, if the initial access process based on the above NR system is to first detect the type0 PDCCH and then obtain the scheduling information of the PDSCH carrying SIB1, there are problems of high terminal power consumption and complex detection. Summary of the Invention

[0005] This application provides an information transmission method, apparatus, device, and storage medium, which solves the problems of high power consumption and complex detection in the initial access process of existing terminals.

[0006] In a first aspect, embodiments of this application provide an information transmission method applied to a terminal device, the method comprising:

[0007] Receive indication information via physical broadcast channel;

[0008] Based on the indicated information, scheduling information for the data channel is determined. The data channel carries system messages, and the scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0009] Secondly, embodiments of this application provide an information transmission method applied to a network device, the method comprising:

[0010] Determine the scheduling information of the data channel, which carries system messages;

[0011] Instructions for transmitting the scheduling information via a physical broadcast channel;

[0012] The scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0013] Thirdly, embodiments of this application provide an information transmission device, including: a receiving module and a processing module;

[0014] The receiving module is used to receive indication information through a physical broadcast channel;

[0015] The processing module is configured to determine the scheduling information of the data channel based on the indication information. The data channel carries system messages, and the scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0016] Fourthly, embodiments of this application provide an information transmission device, including: a processing module and a sending module;

[0017] The processing module is used to determine the scheduling information of the data channel, which carries system messages;

[0018] The sending module is used to send indication information of the scheduling information through a physical broadcast channel;

[0019] The scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0020] Fifthly, embodiments of this application provide a terminal device, including:

[0021] Processor, memory, receiver, and interface for communicating with network devices;

[0022] The memory stores computer-executed instructions;

[0023] The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in the first aspect.

[0024] In one implementation, the processor described above can be a chip.

[0025] Sixthly, embodiments of this application provide a network device, including:

[0026] Processor, memory, transmitter, and interface for communicating with terminal devices;

[0027] The memory stores computer-executed instructions;

[0028] The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in the second aspect.

[0029] In one implementation, the processor described above can be a chip.

[0030] In a seventh aspect, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method described in the first aspect.

[0031] Eighthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, are used to implement the method described in the second aspect.

[0032] Ninthly, embodiments of this application provide a program that, when executed by a processor, performs the method described in the first aspect.

[0033] In a tenth aspect, embodiments of this application provide a program that, when executed by a processor, performs the method described in the second aspect.

[0034] Eleventhly, embodiments of this application provide a computer program product, including program instructions for implementing the method described in the first aspect.

[0035] In a twelfth aspect, embodiments of this application provide a computer program product, including program instructions for implementing the method described in the second aspect.

[0036] In a thirteenth aspect, embodiments of this application provide a chip, including: a processing module and a communication interface, the processing module being capable of executing the method described in the first aspect.

[0037] Furthermore, the chip also includes a storage module (e.g., a memory) for storing instructions, a processing module for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the method described in the first aspect.

[0038] In a fourteenth aspect, embodiments of this application provide a chip, including: a processing module and a communication interface, the processing module being capable of executing the method described in the second aspect.

[0039] Furthermore, the chip also includes a storage module (e.g., a memory) for storing instructions, a processing module for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the method described in the second aspect.

[0040] The fifteenth aspect of this application provides a communication system, including: a network device and a terminal device;

[0041] The terminal device is the apparatus described in the third aspect above, and the network device is the apparatus described in the fourth aspect above.

[0042] The information transmission method, apparatus, device, and storage medium provided in this application embodiment involve a network device (base station) first determining the scheduling information of a data channel, where the data channel carries system messages, and then sending an indication of the scheduling information through a physical broadcast channel. Correspondingly, a terminal device determines the scheduling information of the data channel based on the indication information received through the physical broadcast channel. In this embodiment, the scheduling information includes at least one of frequency domain resource information and time domain resource information. This allows the terminal device to obtain the scheduling information of the data channel carrying system messages without needing to detect the control channel, simplifying the detection complexity and reducing the terminal's power consumption. Attached Figure Description

[0043] Figure 1 This application provides a schematic diagram of the structure of a communication system according to an embodiment of the present application.

[0044] Figure 2 This is a schematic diagram showing the distribution of time-domain and frequency-domain resources contained in a synchronization signal block;

[0045] Figure 3 This is a schematic diagram of frequency domain resource allocation based on RBG.

[0046] Figure 4 A schematic diagram of resource distribution for frequency domain resources allocated as type 1;

[0047] Figure 5 An interactive schematic diagram of Embodiment 1 of the information transmission method provided in this application;

[0048] Figure 6 An interactive schematic diagram of Embodiment 2 of the information transmission method provided in this application;

[0049] Figure 7 A schematic diagram showing the distribution of the first bandwidth and the frequency domain location of the data channel;

[0050] Figure 8 This is a schematic diagram showing another distribution of the first bandwidth and the frequency domain location of the data channel;

[0051] Figure 9 This is another schematic diagram showing the distribution of the first bandwidth and the frequency domain location of the data channel.

[0052] Figure 10 An interactive schematic diagram of Embodiment 3 of the information transmission method provided in this application;

[0053] Figure 11 This is a schematic diagram of the structure of the information transmission device according to Embodiment 1 of this application;

[0054] Figure 12 This is a schematic diagram of the structure of the information transmission device according to Embodiment 2 of this application;

[0055] Figure 13 A schematic diagram of the structure of the terminal device provided in this application;

[0056] Figure 14 A schematic diagram of the network device provided in this application;

[0057] Figure 15 This is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] The information transmission methods provided in the following embodiments of this application can be applied to communication systems. Figure 1 This is a schematic diagram of the structure of a communication system provided in an embodiment of this application. Figure 1 As shown, the communication system may include a network device 110 and multiple terminal devices 120 located within the coverage area of ​​the network device 110. Figure 1 An example is shown of a network device 110 and two terminal devices 120.

[0061] In one implementation, the communication system may include multiple network devices 110, and each network device may include other number of terminal devices 120 within its coverage area. This application embodiment does not limit the number of network devices 110 and terminal devices 120 included in the communication system.

[0062] like Figure 1 As shown, terminal device 120 is connected to network device 110 wirelessly. For example, network device 110 and multiple terminal devices 120 can communicate wirelessly using unlicensed spectrum.

[0063] In one implementation, terminal devices 120 can communicate directly with each other via device-to-device (D2D) communication.

[0064] Understandable, Figure 1 This is just an illustration. The communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, or may include other network entities such as network controllers and mobility management entities. The embodiments of this application are not limited to these.

[0065] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Universal Mobile Telecommunication System (UMTS), and Worldwide Interoperability for Microwave. Access (WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems, or other communication systems, etc.

[0066] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC) communication, and vehicle-to-vehicle (V2V) communication. The embodiments of this application can also be applied to these communication systems.

[0067] The system architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0068] The network devices involved in the embodiments of this application can be ordinary base stations (such as NodeB, eNB, or gNB), new radio controllers (NR controllers), centralized units, new wireless base stations, remote radio modules, micro base stations, relays, distributed units, transmission reception points (TRPs), transmission points (TPs), or any other devices. The embodiments of this application do not limit the specific technologies or device forms used in the network devices. For ease of description, in all embodiments of this application, the devices that provide wireless communication functions for terminal devices are collectively referred to as network devices.

[0069] In this embodiment, the terminal device can be any terminal, such as a user equipment for machine-type communications. That is, the terminal device can also be called user equipment (UE), mobile station (MS), mobile terminal, terminal, etc. The terminal device can communicate with one or more core networks via a radio access network (RAN). For example, the terminal device can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc. The terminal device can also be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with the radio access network. No specific limitations are made in this embodiment.

[0070] In one implementation, the network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of the network equipment and terminal equipment.

[0071] In one implementation, network devices and terminal devices, as well as terminal devices communicating with each other, can communicate using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication between network devices and terminal devices, as well as between terminal devices, can be conducted using spectrum below 7 gigahertz (GHz), spectrum above 7 GHz, or simultaneously using both. The embodiments of this application do not limit the spectrum resources used between network devices and terminal devices.

[0072] In this embodiment of the application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0073] The following section first introduces some related technologies involved in the embodiments of this application:

[0074] Synchronization signal block SSB (SS / PBCH block) in NR

[0075] SS / PBCH block is an abbreviation for synchronization signal block (SS block) and physical broadcast channel block (PBCH block).

[0076] Specifically, in NR systems, common channels and signals, such as synchronization signals and broadcast channels, need to cover the entire cell using multi-beam scanning to facilitate reception by terminal equipment within the cell. Multi-beam transmission of the synchronization signal (SS) is achieved by defining SS / PBCH burst sets. An SS / PBCH burst set contains one or more SS / PBCH blocks. An SS / PBCH block carries one beam of synchronization signal and broadcast channel. Therefore, the number of synchronization signal beams that an SS / PBCH burst set can contain is the same as the number of synchronization signal blocks (SS block number) within the cell.

[0077] The maximum number L of SS block numbers is related to the system's frequency band. Specifically, for a frequency band up to 3 GHz, L is 4; for a frequency range from 3 GHz to 6 GHz, L is 8; and for a frequency range from 6 GHz to 52.6 GHz, L is 64.

[0078] For example, Figure 2 This is a schematic diagram showing the distribution of time-domain and frequency-domain resources contained in a synchronization signal block. (Refer to...) Figure 2 As shown, the time-domain information includes OFDM symbols 0 to 3, and the frequency-domain information includes 0 to 239 subcarriers. For example, an SS / PBCH block (SSB) contains orthogonal frequency division multiplexing (OFDM) distributed as follows: a primary synchronization signal (PSS) for one symbol, a secondary synchronization signal (SSS) for one symbol, a combination of two physical broadcast channels (PBCHs), and two PBCHs. The time-frequency resources occupied by the PBCHs include a demodulation reference signal (DMRS), which is used for demodulating the PBCHs.

[0079] For example, such as Figure 2 As shown, in the first symbol (OFDM symbol 0), the PSS occupies subcarriers 56-182 in the frequency domain; in the second and fourth symbols (OFDM symbol 1 and OFDM symbol 3), the PBCH occupies subcarriers 0-239 in the frequency domain; and in the third symbol (OFDM symbol 2), the SSS occupies subcarriers 56-182 in the frequency domain, while the PBCH occupies subcarriers 0-47 and 192-239 in the frequency domain.

[0080] Typically, all SS / PBCH blocks within an SS / PBCH burst set are transmitted within a 5ms time window and repeated at a certain period, which is configured by the higher-layer parameter, the SSB-timing. In one implementation, this period value includes 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.

[0081] For a terminal device (e.g., a UE), the UE determines the index of the SSB by receiving the SS / PBCH block. The SSB index ranges from [0, L-1], where L is the maximum number of SSBs corresponding to the frequency band in which the SSB is located. The SSB index corresponds to the relative position of the SSB within a 5ms time window. The UE determines the frame synchronization information based on the SSB index and the half-frame indication carried in the PBCH. The index of the SS / PBCH block is indicated by the DMRS of the PBCH or the information carried by the PBCH.

[0082] In the embodiments of this application, in addition to the synchronization signals SS and PBCH requiring multi-beam scanning, other public information, such as system information block 1 (SIB1) and paging information, also needs to be sent via multi-beam scanning.

[0083] The SIB1 PDCCH carries the reception of the search space.

[0084] Currently, the PBCH carries the master information block (MIB), which includes the SIB1 configuration (pdcch-ConfigSIB1) information field carried by the PDCCH. Specifically, it includes information about control resource set (CORESET 0) for type 0 PDCCHs. This CORESET 0 information is used to indicate the resource blocks (RBs) in the frequency domain and the symbols in the time domain for type 0 PDCCHs.

[0085] That is, the pdcch-ConfigSIB1 information field in the MIB information carried by PBCH includes the CORESET#0 information of type0PDCCH.

[0086] Specifically, Table 1 shows the correspondence between the index indicated by CORESET 0 information and the number of RBs and symbols in CORESET 0. Specifically, Table 1 mainly targets frequency bands with a minimum channel bandwidth of 5MHz or 10MHz, and when the subcarrier spacing of {SS / PBCH block, PDCCH} is {15, 15}kHz, it sets the set of resource blocks and slot symbols of CORESET for the Type0-PDCCH search space.

[0087] In practical applications, the CORESET 0 information indicates one of the indexes in Table 1. Based on the index, the number of RBs and symbols of CORESET 0, as well as the RB offset relative to SSB, can be obtained.

[0088] For example, referring to Table 1, with a subcarrier spacing of 15 kHz, the bandwidth of CORESET 0 can be configured as 24, 48, or 96 RBs, and the number of RBs by which the frequency domain position of CORESET#0 is offset from the frequency domain position of SSB.

[0089] Table 1

[0090]

[0091]

[0092] In one implementation, the pdcch-ConfigSIB1 information field in the MIB information carried by the PBCH may also include information about the search space 0 of the type0 PDCCH. This search space 0 information is used to determine the listening timing of the type0 PDCCH. The listening timing of the type0 PDCCH is determined as follows: if the multiplexing mode of SSB (SS / PBCHblock) and CORESET is pattern 1, then the terminal device listens to the common search space of the Type0-PDCCH in two consecutive time slots.

[0093] In one implementation, assume the starting time slot of two consecutive time slots is numbered n0. Each SSB numbered i corresponds to a listening window, and the starting time slot number n0 of this listening window is determined by the following formula:

[0094]

[0095] in, denoted as the number of time slots in a radio frame, where μ is a parameter related to the subcarrier spacing. This indicates rounding down, i.e. This represents the largest integer smaller than i·M.

[0096] M and O can be indicated by the Search space 0 information in the PBCH. In the frequency domain below 6 GHz (frequency range 1, FR1) the values ​​of O include {0, 2, 5, 7}, and in the frequency domain above 6 GHz (frequency range 2, FR2) the values ​​of O include {0, 2.5, 5, 7.5}. The values ​​of M include {1 / 2, 1, 2}.

[0097] For example, Table 2 shows the parameters for PDCCH monitoring occasions when the common search space (CSS) of Type 0-PDCCH is set to SSB and CORESET multiplexing pattern 1 and frequency range FR1. Referring to Table 2, taking FR1 as an example, the Searchspace 0 indication information is as follows:

[0098] Table 2

[0099]

[0100] Furthermore, after determining the time slot number n0, it is also necessary to determine the radio frame number SFN in which the listening window is located. C :

[0101]

[0102] That is, when according to When the calculated number of time slots is less than the number of time slots contained in a radio frame, SFN C For even-numbered wireless frames; when according to When the calculated number of time slots is greater than the number of time slots contained in a radio frame, SFN C It is an odd number of wireless frames.

[0103] SIB1-BR transmission in a machine type communication (MTC) system

[0104] In the MTC system, the scheduling information of the PDSCH of System Information Block Type 1 (SIB1-BR) with reduced bandwidth does not need to be carried through the control channel. The PDSCH is transmitted on a defined radio frame and subframe number.

[0105] In one implementation, the narrowband containing the frequency domain resources of the PDSCH is frequency-hopped between narrowbands in the downlink bandwidth according to rules. The frequency domain resources of the PDSCH occupy 6 physical resource blocks (PRBs) of the narrowband. The start symbol of the PDSCH in the subframe is determined according to the downlink bandwidth of the cell, and the scheduling information of the PDSCH carrying SIB1-BR is carried through MIB information.

[0106] Specifically, the scheduling information of the PDSCH carrying SIB1-BR includes the number of PDSCH retransmissions and the transport block size. The number of PDSCH retransmissions and the transport block size are indicated by the information field, which is the value of the scheduling information SIB1-BR (Valueof schedulingInfoSIB1-BR), ranging from integers 0 to 31. See Tables 3 and 4 for details.

[0107] For example, Table 3 shows the number of repetitions for PDSCH carrying SystemInformationBlockType1-BR for BL / CE UEs with bandwidth reduced low complexity (BL) or coverage enhancement (CE), which is the number of PDSCH retransmissions indicated by the value of scheduling information SIB1-BR.

[0108] Table 3

[0109] The value of scheduling information SIB1-BR PDSCH retransmission count 0 N / A 1 4 2 8 3 16 4 4 5 8 6 16 7 4 8 8 9 16 10 4 11 8 12 16 13 4 14 8 15 16 16 4 17 8 18 16 19-31 Reserved

[0110] Table 4 shows the transport block size (TBS) table for PDSCH carrying System Information Block Type 1-BR, i.e., the values ​​of scheduling information SIB1-BR (transport block index I). TBS The size of the transport block indicated by ).

[0111] Table 4

[0112]

[0113] In one implementation, in practical applications, the PDSCH carrying SIB1-BR is transmitted according to a scheduling period of 80ms, and is repeatedly transmitted within each period. The radio frame and subframe in which the retransmission occurs are determined based on the cell identifier and the number of retransmissions. For example, the PDSCH carrying SIB1-BR is always modulated using quadrature phase shift keying (QPSK).

[0114] Downlink data transmission in NR

[0115] In NR, when a base station schedules downlink data transmission through downlink control information (DCI) (DCI format 1_0 or DCI format 1_1) of downlink grant, it will carry PDSCH scheduling information in the DCI. This scheduling information includes time domain resource allocation information and frequency domain resource allocation information.

[0116] The time-domain resource allocation information is indicated through the time-domain resource allocation (TDRA) field. This TDRA field contains 4 bits and can indicate 16 different rows in a resource allocation table. Each row contains different resource allocation combinations, such as the start symbol S of the PDSCH, its length L, k0, and different types. k0 represents the number of slot offsets between the slot containing the DCI and the slot containing the PDSCH.

[0117] In NR, the start symbol and length of PDSCH are no longer fixed. Instead, the TDRA field in DCI indicates the start symbol S and length L of PDSCH in the scheduling slot. The values ​​of S and L are not arbitrary but are jointly encoded to form a start and length indicator (SLIV) value. In one implementation, the cyclic prefix (CP) length mainly has two types: normal cyclic prefix and extended cyclic prefix. The specific values ​​of SLIV are shown in Table 5, which lists valid S and L combinations.

[0118] Table 5

[0119]

[0120]

[0121] As shown in Table 5, there are two methods for allocating time-domain resources: Type A and Type B. Simply put, the difference between Type A and Type B lies in the candidate values ​​of S and L. Type A primarily targets slot-based services, with S positioned earlier and L longer. Type B, on the other hand, primarily targets ultra-reliable and low-latency communications (URLLC) services, which have higher latency requirements. Therefore, the position of S is more flexible to facilitate the transmission of URLLC services that arrive at any time, and L is shorter to reduce transmission latency.

[0122] There are two methods for allocating frequency domain resources in PDSCH: Type 0 and Type 1. Type 0 frequency domain resource allocation involves the concept of a resource block group (RBG). In short, several RBs together are called an RBG (RB group). The specific number of RBs that make up an RBG is related to the configuration of radio resource control (RRC) (Configuration 1 and Configuration 2) and the Bandwidth Part Size (BWP), as shown in Table 6. Table 6 shows the nominal RBG size P.

[0123] Table 6

[0124] BWP size Configuration 1 Configuration 2 1–36 2 4 37–72 4 8 73–144 8 16 145–275 16 16

[0125] In one implementation, each RBG has a corresponding 1-bit; if this bit is set to 1, it indicates that the RBG is allocated to the PDSCH. Assuming the BWP bandwidth is 14 RBs, and the RRC configures the RBG as Configuration 1, referring to Table 6, we find that the RBG size is 2. For example, Figure 3 This is a schematic diagram of frequency domain resource allocation based on RBG. (Refer to...) Figure 3 As shown, the RBG in the padding part represents the RBG allocated to the terminal device. In this case, the frequency domain resource allocation can be represented by "0101010".

[0126] It is understandable that Type 0 resource allocation supports both contiguous and non-contiguous frequency domain resource allocation.

[0127] The Type 1 frequency domain resource allocation method encodes the start position (S) and length (L) of a resource together to form a resource indication value (RIV). Each (S, L) corresponds one-to-one with a RIV, and the terminal device can deduce the corresponding (S, L) from the RIV.

[0128] For example, Figure 4 This is a diagram illustrating the frequency domain resource allocation for Type 1. (Refer to...) Figure 4 As shown, assuming that S=2 and L=7 are determined according to RIV, the starting RB for frequency allocation is RB 2 (the third RB, from bottom to top), and then 7 RBs are occupied consecutively.

[0129] It is understandable that Type 1 frequency domain resource allocation can only allocate contiguous frequency domain resources.

[0130] Furthermore, the following is a brief introduction to the resource distribution in the existing NR system, where network devices indicate the scheduling information of the PDSCH carrying SIB1 using DCI format 1_0:

[0131] In existing NR systems, network devices indicate the scheduling information of the PDSCH carrying SIB1 via DCI format 1_0. In this case, the frequency domain resource allocation method is type 1. Specifically, the number of bits occupied by the PDSCH scheduling information is as follows:

[0132] The number of bits occupied by frequency domain resource allocation information is bits, where This refers to the bandwidth of CORESET 0, which is the number of resource blocks (broadband) in the downlink bandwidth portion.

[0133] Time-domain resource allocation information occupies 4 bits; the mapping method from virtual RB to physical RB occupies 1 bit; the modulation and coding method occupies 5 bits; the redundancy version occupies 2 bits; the system message indication occupies 1 bit; and the reserved bits are 15 bits.

[0134] In existing NR systems, CORESET 0 is indicated by 4 bits in the MIB information. It means the control resource set of type0PDCCH, including the number of RBs and symbols of CORESET 0, as well as the frequency domain position, that is, the RB offset relative to SSB.

[0135] In existing NR systems, when the time-domain resource allocation information of the PDSCH carrying SIB1 is indicated via DCI format 1_0, this time-domain resource allocation information includes 4 bits, used to indicate the start symbol S and length L of the PDSCH in the scheduling time slot. In one implementation, Table 7 shows the time-domain resource allocation information of the default type A PDSCH in a regular CP configuration. Referring to Table 7, the 4 bits of information are used to indicate 16 index values, each index corresponding to a combination of the start symbol S and length L.

[0136] Table 7

[0137]

[0138]

[0139] In existing NR systems, the time slot where the PDSCH resides is determined by the time slot where the PDCCH detected by the terminal resides and the K0 value indicated in the DCI. K0 = 0 indicates that the PDCCH and its scheduled PDSCH are in the same time slot.

[0140] For example, the pdcch-ConfigSIB1 information field in the MIB information carried by the PBCH also includes Search space 0 information for type0 PDCCH. This Search space 0 information is used to determine the listening time of type0 PDCCH, and each listening time includes two consecutive time slots for listening. The terminal device detects the PDCCH in the time slot corresponding to the listening time. If it detects the DCI of the scheduling PDSCH carrying SIB1, it determines the time slot where the PDSCH transmission is located based on the K0 information in the DCI.

[0141] NR-light system

[0142] The NR system is primarily designed to support enhanced mobile broadband (eMBB) services, meeting the needs of high-speed, high-spectral-efficiency, and high-bandwidth applications. However, in practice, besides eMBB, various other service types exist, such as sensor networks, video surveillance, and wearable devices, each with different requirements in terms of speed, bandwidth, power consumption, and cost. Compared to terminals supporting eMBB, terminals supporting these other services have lower capabilities, for example, reduced bandwidth, less demanding processing times, and fewer antennas. In practical applications, the NR system is optimized for these services and correspondingly less capable terminals; the optimized system is called the NR-light system.

[0143] Currently, in the initial access process of existing NR technology, the terminal device receives the CORESET and search space information of the type0 PDCCH through the MIB, and then receives SIB1 by receiving the type0 PDCCH. That is, if the terminal device wants to receive SIB1, it first needs to detect the type0 PDCCH and then obtain the scheduling information of the PDSCH carrying SIB1. However, for terminals with low support capabilities, there are problems of high terminal power consumption and complex detection.

[0144] To address the aforementioned issues, this application provides an information transmission method. A network device (base station) first determines the scheduling information of a data channel, whereby the data channel carries system messages. Then, it sends an indication of this scheduling information via a physical broadcast channel. Correspondingly, a terminal device determines the scheduling information of the data channel based on the indication received via the physical broadcast channel. In this embodiment, the scheduling information includes at least one of frequency domain resource information and time domain resource information. This allows the terminal device to obtain the scheduling information of the data channel carrying system messages without needing to detect the control channel, simplifying detection complexity and reducing terminal power consumption.

[0145] Specifically, the technical concept of this application is as follows: Since certain terminals designed to support large connection numbers, low power consumption, and low cost already exist in LTE systems, such as MTC and Narrow Band Internet of Things (NB-IoT), the NR-light system can simplify the process of terminal receiving SIB1, similar to the MTC system. For example, the terminal can obtain the scheduling information of the PDSCH carrying SIB1 without needing to detect the type 0 PDCCH. Therefore, how to obtain the scheduling information of the PDSCH carrying SIB1 in the NR-light system is the technical problem this application aims to solve.

[0146] The technical solution of this application will now be described in detail through specific embodiments. It should be noted that the technical solution of this application may include some or all of the following content. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0147] Figure 5 This is a schematic diagram illustrating the interaction of an embodiment of the information transmission method provided in this application. The method is described using information interaction between a terminal device and a network device. (Refer to...) Figure 5 As shown, in this embodiment, the method may include the following steps:

[0148] S501. The network device determines the scheduling information of the data channel, which carries system messages.

[0149] In the embodiments of this application, when the network device and the terminal device transmit information, system messages, such as SIB1, SIB2, SIB3 to SIB9, are carried through data channels. A brief description of some of the messages in SIB1, SIB2, SIB3 to SIB9 is provided below. The specific content or function of each message is prior art and will not be elaborated upon here.

[0150] For example, SIB1, also known as the scheduling block, can carry some cell selection information; SIB2 contains information such as common channels and pilots; and SIB3 contains cell reselection parameters.

[0151] Understandably, system message elements are broadcast within "System Message Blocks (SIBs)". A System Message Block can group system message elements with the same properties together, and different System Message Blocks can have different characteristics.

[0152] In the embodiments of this application, during the communication process between the network device and the terminal device, the network device can send configuration information to the terminal device, such as data channel scheduling information. Therefore, the network device first needs to determine what the data channel scheduling information includes. For example, the data channel scheduling information includes frequency domain resource information, time domain resource information, virtual RB to physical RB mapping method, modulation and coding method, redundancy version, retransmission count, etc.

[0153] S502. The network device sends the instruction information for this scheduling information through the physical broadcast channel.

[0154] The scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0155] In this embodiment, the network device may transmit data channel scheduling information via the Physical Broadcast Channel (PBCH) instead of the PDCCH. Specifically, after determining at least one type of scheduling information, the network device can transmit an indication of that scheduling information via the PBCH, so that the terminal device can determine the corresponding scheduling information based on the received indication.

[0156] It is worth noting that frequency domain resource information can indicate the frequency domain resources occupied by terminal devices and network devices during data transmission, while time domain resource information can indicate the time domain resources occupied by terminal devices and network devices during data transmission. For terminal devices and network devices to transmit data, both of these information must first be determined. Therefore, the scheduling information corresponding to the indication information carried by the network device through the PBCH must include at least one of the frequency domain resource information and time domain resource information.

[0157] For example, in one embodiment of this application, the network device sends indication information of frequency domain resource information through the PBCH; in another embodiment of this application, the network device sends indication information of time domain resource information through the PBCH; in yet another embodiment of this application, the network device sends indication information of both frequency domain resource information and time domain resource information through the PBCH, etc.

[0158] It is understood that the embodiments of this application do not limit the specific content of the scheduling information sent through PBCH. For example, in some scenarios, network devices may also send indication information such as modulation and coding scheme and / or redundancy version through PBCH. The specific content of the scheduling information sent through PBCH can be determined according to the actual situation, and will not be elaborated here.

[0159] For example, in the embodiments of this application, the indication information of the scheduling information is mainly information used to indicate the scheduling information. For example, the indication information of frequency domain resource information may be at least one of the following: the bandwidth of the data channel, the frequency domain location information of the bandwidth, and the frequency domain resource allocation information within the bandwidth. The indication information of time domain resource information may be at least one of the following: the time slot where the data channel is located, the starting symbol and the number of symbols within the time slot. The indication information for different scheduling information is different and can be determined according to the actual situation. This application embodiment does not limit it.

[0160] For example, a detailed implementation of this step can be found below. Figure 6 and Figure 10 The descriptions in the illustrated embodiments will not be repeated here.

[0161] S503. The terminal device determines the scheduling information of the data channel based on the instruction information received through the physical broadcast channel.

[0162] In the embodiments of this application, after the network device sends the indication information of scheduling information through the physical broadcast channel, the terminal device can receive the indication information through the physical broadcast channel accordingly, and then determine the corresponding scheduling information based on the indication information, and then determine all the scheduling information of the data channel based on the determined scheduling information and / or preset information.

[0163] For example, if the aforementioned indication information is an indication of frequency domain resource information, the terminal device can first determine the frequency domain resource information of the data channel based on the indication information, and then determine other information including the scheduling information of the data channel based on preset information or the correspondence between at least one of the frequency domain resource information and other information. If the aforementioned indication information is an indication of time domain resource information, the terminal device can first determine the time domain resource information of the data channel based on the indication information, and then determine other information including the scheduling information of the data channel based on preset information or the correspondence between at least one of the time domain resource information and other information.

[0164] It is understood that the other information in this embodiment can be other information in the scheduling information included in the data channel besides the scheduling information corresponding to the indication information. The specific form of the other information can be determined according to the actual situation, and will not be elaborated here.

[0165] For example, a detailed implementation of this step can be found below. Figure 6 and Figure 10 The descriptions in the illustrated embodiments will not be repeated here.

[0166] The information transmission method provided in this application involves a network device determining scheduling information for a data channel. This data channel carries system messages, and the device transmits an indication of this scheduling information via a physical broadcast channel. A terminal device determines the scheduling information for the data channel based on the indication received via the physical broadcast channel. This scheduling information includes at least one of frequency domain resource information and time domain resource information. In this technical solution, the terminal device can receive the time domain resource information and / or frequency domain resource information of the data channel carrying system messages without detecting the control channel, thus reducing the power consumption and detection complexity of the terminal device.

[0167] For example, based on the above embodiments, Figure 6 This is an interactive schematic diagram of Embodiment 2 of the information transmission method provided in this application. When frequency domain resource information is carried through a physical broadcast channel, such as... Figure 6 As shown, the above S502 can be implemented through the following steps:

[0168] S601, The network device determines the frequency domain indication information of the frequency domain resource information.

[0169] The frequency domain indication information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0170] In the embodiments of this application, after the network device determines the scheduling information of the data channel, it can first determine the frequency domain indication information of the frequency domain resource information included in the scheduling information.

[0171] For example, the frequency domain indication information may include at least one of the following: the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information within the first bandwidth. That is, the network device may use at least one of the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information within the first bandwidth as indication information for frequency domain resources.

[0172] For example, in one embodiment of this application, the frequency domain indication information includes one of the following: a first bandwidth where the data channel is located, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth; in another embodiment of this application, the frequency domain indication information may include two of the following: a first bandwidth where the data channel is located, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth; in yet another embodiment of this application, the frequency domain indication information may include all of the following: a first bandwidth where the data channel is located, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0173] It is understood that the embodiments of this application do not limit the specific content and number of specific contents included in the frequency domain indication information, which can be determined according to the actual situation, and will not be elaborated here.

[0174] In one implementation, in an embodiment of this application, the frequency domain resource allocation method of the above-mentioned frequency domain resource allocation information is type 1.

[0175] As an example, the frequency domain resource allocation information includes: the number of resource blocks or the number of resource block groups.

[0176] As another example, the frequency domain resource allocation information includes: the number of resource blocks and the location information of the starting resource block; or, the frequency domain resource allocation information includes: the number of resource block groups and the location information of the starting resource block group.

[0177] Specifically, the following describes how network devices use the frequency domain indication information carried by the PBCH to indicate the frequency domain resource information of the PDSCH, and the PDSCH can carry system messages such as SIB1.

[0178] In this embodiment, in order to indicate the frequency domain resource information of the PDSCH carrying SIB1 via PBCH, the network device first needs to obtain frequency domain indication information, namely, the first bandwidth occupied by the data channel, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information within the first bandwidth. In one implementation, the specific design of the frequency domain indication information can refer to the existing records in NR systems, that is, the first bandwidth is similar to the bandwidth in CORESET 0 information, the frequency domain location information of the first bandwidth is similar to the frequency domain location information of the bandwidth in CORESET 0 information, and the frequency domain resource allocation information within the first bandwidth is similar to the frequency domain resource allocation information of type1 within the bandwidth in CORESET 0 information. In the NR system, referring to Table 1 above, there are a total of 7 possible combinations of bandwidth and frequency domain location of CORESET 0, namely {RB number, RB offset} = {24,0}, {24,2}, {24,4}, {48,12}, {48,16}, {96,38}.

[0179] In embodiments of this application, the network device can jointly encode the aforementioned first bandwidth and its frequency domain location information to represent a combination of values ​​for the first bandwidth and its frequency domain location information. In one implementation, there are seven possible combinations of the first bandwidth and its frequency domain location information, requiring 3 bits to represent the information of this value combination, which is then carried through the PBCH.

[0180] It is understandable that the above seven possible combinations are examples under specific parameters. Under different parameters, there are other possibilities for the combination of the first bandwidth and the frequency domain position information of the first bandwidth, and correspondingly, the number of information bits used to represent the combination of values ​​is also different.

[0181] In this embodiment, the PBCH also needs to carry frequency domain resource allocation information within the first bandwidth. In one implementation, based on the fact that the bandwidth of CORESET 0 in the existing NR system can include 24RB, 48RB, and 96RB, the first bandwidth of the frequency domain indication information is... It can also include 24RB, 48RB, and 96RB. In the first bandwidth... Including 96RB, according to Calculating the frequency domain resource allocation information corresponding to 96 RBs requires 13 bits, which would consume too many resources when carried through the PBCH. Therefore, in this embodiment, the granularity of frequency domain resource allocation can be increased, such as by using a defined RBG for resource allocation, dividing the number of RBs included in the first bandwidth of the frequency domain indication information into several RBGs.

[0182] For example, for the 96 RBs included in the first bandwidth mentioned above, if one RBG contains 4 RBs, then 96 RBs constitute 24 RBGs. When allocating frequency domain resources at the RBG granularity, according to... Calculations show that 9 bits are needed for frequency domain resource allocation information. That is, in this embodiment, for any starting RB or RBG + any number of RB or RBG within the first bandwidth, the total number of combinations can be determined, and then the required number of bits can be calculated according to the above formula.

[0183] In one implementation, as an example, the frequency domain resource allocation information may only contain the number of RBs or RBGs allocated in the frequency domain. In another implementation, the position of each RB or RBG within the first bandwidth may be predefined.

[0184] In one implementation, as another example, the frequency domain resource allocation information may include the number of RBs / RBGs allocated in the frequency domain, and the starting RBs / RBGs of the frequency domain resources. For example, the number of RBs and the value of the starting RB can be combined, and the number of combinations of the number of RBs and the starting RB is finite. The number of RBGs and the value of the starting RBG can also be combined, where the number of combinations of the number of RBGs and the starting RBG is also finite. This allocation method in this embodiment sacrifices the flexibility of frequency domain resource allocation, but reduces the number of bits required for frequency domain resource allocation information, thus reducing resource consumption.

[0185] For example, taking a first bandwidth of 96 RB for the data channel as an example, the combination of frequency domain resource allocation information can be {number of allocated RBs, starting RB} = {96,0}, {48,24}, {48,47}, {24,0}, {24,16}, {24,32}. In this way, the frequency domain resource allocation information only requires 3 bits of information. In this embodiment, by combining the combination of the first bandwidth and the frequency domain location information of the first bandwidth, {number of RBs, RB offset}, the number of bits required for {number of RBs, starting RB} can be further reduced. For example, when {number of RBs, RB offset} = one of {24,0}, {24,2}, {24,4}, {number of allocated RBs, starting RB} can only be {24,0}, {24,16}, {24,32}, that is, the number of allocated RBs must be less than or equal to the number of RBs included in the first bandwidth.

[0186] In the embodiments of this application, by setting the allocation granularity of frequency domain resource allocation information, the number of bits of information carried by the PBCH can be reduced, thereby reducing the information redundancy carried by the PBCH.

[0187] Furthermore, in one embodiment of this application, for frequency domain resource information, the first bandwidth is the same in different time units, and the frequency domain position of the first bandwidth is the same in different time units.

[0188] For example, Figure 7 This diagram illustrates the distribution of the first bandwidth and its frequency domain location within the data channel. The diagram uses three time slots (slot 1 to slot 3) to illustrate the first bandwidth and its frequency domain location. (Refer to...) Figure 7 As shown, the first bandwidth on time slots 1 to 3 is the same, and the frequency domain position of the first bandwidth on time slots 1 to 3 is the same.

[0189] In this embodiment, by setting the first bandwidth to be the same in different time units and the frequency domain position of the first bandwidth to be the same in different time units, the difficulty of indicating frequency domain indication information can be reduced, thereby reducing the resources required for resource allocation.

[0190] In another embodiment of this application, for frequency domain resource information, the first bandwidth is different in at least two time units, and / or the frequency domain position of the first bandwidth is different in at least two time units.

[0191] In one implementation, in the embodiments of this application, the scheme can be interpreted as follows: first, the first bandwidths are different in at least two time units; second, the frequency domain positions of the first bandwidths are different in at least two time units; third, the first bandwidths are different in at least two time units and the frequency domain positions of the first bandwidths are different in at least two time units.

[0192] The difference in the first bandwidth at least two time units can be understood as the difference in the first bandwidth at least two time units in all time units, and the difference in the frequency domain position of the first bandwidth at least two time units in all time units can be understood as the difference in the frequency domain position of the first bandwidth at least two time units in all time units.

[0193] For example, Figure 8 This is a schematic diagram illustrating another distribution of the first bandwidth and its frequency domain location within the data channel. (Compared to...) Figure 7 Similarly, this diagram is still illustrated using the first bandwidth and its frequency domain location across three time slots (time slot 1 to time slot 3). (Refer to...) Figure 8 As shown, the first bandwidth on time slot 1 and time slot 2 is the same, but the first bandwidth on time slot 3 is different from the first bandwidth on time slot 1 and time slot 2. The frequency domain position of the first bandwidth on time slot 1 and time slot 2 is the same, but the frequency domain position of the first bandwidth on time slot 3 is different from the frequency domain position of the first bandwidth on time slot 1 and time slot 2.

[0194] For example, Figure 9 This is another schematic diagram illustrating the distribution of the first bandwidth and its frequency domain location within the data channel. This diagram still uses the first bandwidth and its frequency domain location across three time slots (time slot 1 to time slot 3) for illustration. (Refer to...) Figure 9 As shown, the first bandwidths on time slots 1, 2 and 3 are all different, and the frequency domain positions of the first bandwidths on time slots 1, 2 and 3 are all different.

[0195] Therefore, in this embodiment, the frequency domain indication information can indicate the frequency domain position on the first bandwidth and can also hop frequencies over time, that is, the frequency domain position of the first bandwidth is different in different time units, or it can indicate that the frequency domain position of the first bandwidth is the same in different time units, or it can indicate that the first bandwidth and the frequency domain position on the first bandwidth are different in different time units, etc.

[0196] The embodiments of this application do not limit the specific relationship between information such as the first bandwidth and the frequency domain position of the first bandwidth in different time units. It can be determined according to the actual situation, and will not be elaborated here.

[0197] S602. Network devices transmit indication information, including frequency domain indication information, through the physical broadcast channel.

[0198] In the embodiments of this application, after the network device determines the frequency domain indication information according to the steps of S601 described above, it can broadcast the frequency domain indication information through the PBCH.

[0199] Accordingly, in the embodiments of this application, reference is made to Figure 6 As shown, the above S503 can be implemented through the following steps:

[0200] S603. The terminal device determines the frequency domain indication information of the frequency domain resource information based on the above indication information.

[0201] In the embodiments of this application, when a terminal device receives an indication message sent by a network device through the PBCH, it can determine the frequency domain indication information of the frequency domain resource information by parsing the indication message.

[0202] For example, in this embodiment, the frequency domain indication information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0203] The specific implementation of each piece of information included in the frequency domain indication information can be found in S601 above, and will not be repeated here.

[0204] S604. The terminal device determines the frequency domain resource information of the data channel based on the frequency domain indication information.

[0205] In embodiments of this application, when a terminal device determines the frequency domain indication information of the frequency domain resource information, it can determine the frequency domain resource information of the data channel based on the frequency domain indication information. In one implementation, the frequency domain resource information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0206] For example, if the frequency domain indication information is at least one of the following: first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth, then other unknown frequency domain resource information can be determined based on this known information.

[0207] Furthermore, in the embodiments of this application, the network device carries the frequency domain resource information of the PDSCH through the PBCH. If the time domain resource information of the PDSCH is not carried through the PBCH, the time domain resource information can be indicated by preset information or a predefined method.

[0208] For example, in this embodiment, the time-domain resource information of the data channel is indicated by a preset first information.

[0209] The first information includes at least one of the following: radio frame number, time slot number, cell identifier, synchronization signal block index, retransmission count, start symbol and number of symbols in the time slot where the data channel is located, and time slot indication information. The time domain resource information includes at least one of the following: the time slot where the data channel is located, the start symbol and number of symbols in the time slot for the data channel.

[0210] In one implementation, in this embodiment, the radio frame number can be the number of the radio frame in which the data channel is located, the time slot number is the number of the time slot in which the data channel is located, the cell identifier can be the identifier of the cell in which the terminal device is located, the synchronization signal block index can be the index value of the synchronization signal block used by the terminal device and the network device for information interaction, and the retransmission count can refer to the number of times the terminal device is retransmitting this time.

[0211] The time slot indication information can be parameters used to calculate the time slot information, such as the period and offset of the time slot where the data channel is located, and the time offset between the time slot and the PBCH. The specific form of the time slot indication information can be determined according to the actual situation, and will not be elaborated here.

[0212] For example, at least one piece of information in the time-domain resource information has a corresponding relationship with the frequency-domain resource information.

[0213] For example, network devices can use predefined methods to indicate time-domain resource allocation information. For instance, the time slot where the PDSCH is located corresponds to the specific composition of the time slot. Alternatively, the specific composition of the time slot can be a fixed combination of the starting symbol S and length L in the scheduling time slot. Or, the combination of the starting symbol S and length L corresponds to the frequency-domain resource information in the scheduling information. For instance, the value of one frequency-domain resource information of the PDSCH carried by the PBCH corresponds to one time-domain resource allocation information.

[0214] Correspondingly, in Figure 6 In the illustrated embodiment, the information transmission method may further include the following steps:

[0215] S605. The terminal device determines the time domain resource information of the data channel based on the preset first information.

[0216] The first information includes at least one of the following: radio frame number, time slot number, cell identifier, synchronization signal block index, number of retransmissions, start symbol and number of symbols of the time slot in which the data channel is located, and time slot indication information.

[0217] The time-domain resource information includes at least one of the following: the time slot in which the data channel is located, the starting symbol of the data channel in the time slot, and the number of symbols.

[0218] In this embodiment, when the terminal device and the network device pre-agree on the first information used to determine the time-domain resource information, and when the time-domain resource information of the data channel is not carried through the PBCH, the terminal device can deduce the time-domain resource information of the data channel based on the preset first information.

[0219] In one implementation, the information included in the first information has a certain correspondence with the time-domain resource information. Thus, when the terminal device obtains or determines at least one of the first information, it can determine the time-domain resource information based on the correspondence between the two.

[0220] For example, the time-domain resource information of a data channel refers to the time-domain resources occupied by the data channel, which may include the time unit in which the data channel is located, such as a time slot, or the starting symbol and the number of symbols in the time unit (time slot) in which the data channel is located.

[0221] When the terminal device determines the scheduling information of the data channel based on the above steps, that is, the time-domain resource information and frequency-domain resource information of the data channel, it can determine the time-frequency resources required for data transmission between the terminal device and the network device.

[0222] The information transmission method provided in this application embodiment involves a network device determining frequency domain indication information of the frequency domain resource information and transmitting indication information including the frequency domain indication information through a physical broadcast channel. A terminal device determines the frequency domain indication information of the frequency domain resource information based on the aforementioned indication information, and then determines the frequency domain resource information of the data channel based on the frequency domain indication information. Furthermore, in this embodiment, the terminal device can determine the time domain resource information of the data channel based on preset first information. This technical solution allows the terminal device and network device to transmit the frequency domain resource information of the data channel carrying system messages via the PBCH. It can receive the frequency domain resource information of the data channel carrying system information without detecting the control channel, reducing the power consumption and detection complexity of the terminal device.

[0223] For example, based on the above embodiments, Figure 10 This is an interactive schematic diagram of Embodiment 3 of the information transmission method provided in this application. When time-domain resource information is carried through a physical broadcast channel, such as... Figure 10 As shown, in this embodiment, the above-mentioned S502 can be implemented through the following steps:

[0224] S1001, Time domain indication information for network devices to determine time domain resource information.

[0225] The time-domain indication information includes at least one of the following: the time slot in which the data channel is located, the starting symbol in the time slot in which the data channel is located, and the length.

[0226] In the embodiments of this application, after the network device determines the scheduling information of the data channel, it can first determine the time domain indication information of the time domain resource information included in the scheduling information.

[0227] In one implementation, the time-domain indication information includes at least one of the following: the time slot in which the data channel is located, the start symbol in the time slot, and the length. That is, the time-domain indication information includes the time slot in which the data channel is located, or the time-domain indication information includes the start symbol in the time slot and the length, or the time-domain indication information includes both the time slot in which the data channel is located and the start symbol in the time slot.

[0228] It is understood that the embodiments of this application do not limit the specific content of the time domain indication information, which can be determined according to the actual situation, and will not be elaborated here.

[0229] The following section details how network devices use the time-domain indication information carried by the PBCH to indicate the time-domain resource information of the PDSCH, and how the PDSCH can carry system messages such as SIB1.

[0230] In this embodiment, the time-domain resource information carried by the PBCH may include time-domain resource allocation information. In this case, the network device can reuse the 4-bit time-domain resource allocation information in the existing NR system. In one implementation, in the NR-light system, when the network device carries time-domain resource information through the PBCH, it can limit the combination of the start symbol S and length L of the time slot where the data channel is located, in order to reduce the number of bits of the time-domain resource allocation information.

[0231] In this embodiment, the time-domain resource information carried by the PBCH also includes the time slot information where the PDSCH carrying SIB1 is located. Specifically, the network device can reuse the existing Search space 0 information of the type 0 PDCCH and use the set of time slots indicated by the Search space 0 information as the time slot where the PDSCH transmission is located.

[0232] In one implementation, for NR-light systems, network devices can also limit the combination of values ​​included in Search space 0 information to reduce the number of bits in the time slot information where PDSCH is located.

[0233] S1002. The network device sends indication information including the time domain indication information through the physical broadcast channel.

[0234] In the embodiments of this application, after the network device determines the time domain indication information according to the steps of S1001 described above, it can broadcast the time domain indication information through the PBCH.

[0235] Accordingly, in the embodiments of this application, reference is made to Figure 10 As shown, the above S503 can be implemented through the following steps:

[0236] S1003. The terminal device determines the time domain indication information of the time domain resource information based on the above indication information.

[0237] The time-domain indication information includes at least one of the following: the time slot in which the data channel is located, the starting symbol in the time slot in which the data channel is located, and the length.

[0238] In the embodiments of this application, when a terminal device receives an indication message sent by a network device through the PBCH, it can determine the time domain indication information of the time domain resource information by parsing the indication message.

[0239] For example, in this embodiment, the time-domain indication information includes at least one of the following: the time slot where the data channel is located, the start symbol in the time slot where the data channel is located, and the length. That is, in some scenarios, the time-domain indication information may only include the time slot where the data channel is located or the start symbol in the time slot where the data channel is located, while in other scenarios, the time-domain indication information may include either the time slot where the data channel is located or the start symbol in the time slot where the data channel is located.

[0240] The specific implementation of each piece of information included in the time-domain indication information can be referred to the description in the above embodiments, and will not be repeated here.

[0241] S1004. The terminal device determines the time domain resource information of the data channel based on the time domain indication information.

[0242] In one implementation, in an embodiment of this application, when a terminal device receives time-domain indication information of time-domain resources, such as the time slot where the data channel is located, the start symbol and length of the time slot where the data channel is located, it can determine the time-domain resource information of the time-domain data channel based on at least one of the above information.

[0243] In one implementation, when the time domain resource information includes the information of the time slot where the data channel is located, i.e., the information of the time slot where the PDSCH is located, and is not carried through the PBCH, the information of the time slot where the data channel is located can be determined based on at least one of the following:

[0244] Radio frame number, timeslot number, cell identifier, synchronization signal block index, retransmission count, and timeslot indication information.

[0245] For more information about the above, please refer to the above. Figure 6 The steps S604 and S605 described in the illustrated embodiment will not be repeated here.

[0246] Furthermore, in the embodiments of this application, the network device carries the time-domain resource information of the PDSCH through the PBCH. If the frequency-domain resource information of the PDSCH is not carried through the PBCH, the frequency-domain resource information can be indicated by preset information or a predefined method.

[0247] For example, in this embodiment, the frequency domain resource information of the data channel is indicated by a preset second information.

[0248] The second information includes at least one of the following: frequency domain location information of the synchronization signal block, the number of resources contained in the frequency domain resources of the data channel, the location of the frequency domain resources contained in the frequency domain resources of the data channel, and frequency domain offset information. The frequency domain resource information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0249] In one implementation, in this embodiment, the frequency domain location information of the synchronization signal block can be the location information of the beam used by the network device and the terminal device for communication; the number of resources included in the frequency domain resources of the data channel, for example, the number of RBs or RBGs; the location of the frequency domain resources included in the frequency domain resources of the data channel refers to the location information of the frequency domain resources in the first bandwidth; the frequency domain offset information can be a parameter used to calculate the frequency resources, for example, the frequency domain offset between the frequency domain resource information of the data channel and the frequency domain location of the synchronization signal block. The specific form of the frequency domain offset information can be determined according to the actual situation, and will not be elaborated here.

[0250] For example, in the embodiments of this application, at least one piece of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

[0251] For example, the time-domain resource information of the PDSCH is carried through the PBCH, but the frequency-domain resource information of the PDSCH is not carried through the PBCH. Instead, it is determined based on other information or a predefined method. For instance, the frequency-domain resource location of the PDSCH is determined based on the frequency-domain location of the SSB and a predefined method; the number of RBs included in the frequency-domain resources of the PDSCH is predefined, such as the frequency-domain resources of the PDSCH being equal to 24 RBs, or the frequency-domain resources of the PDSCH being equal to the number of RBs in the SSB, i.e., 20 RBs.

[0252] For example, the number of redundancies (RBs) and / or the location of frequency domain resources in the PDSCH can correspond to the time domain resource information of the PDSCH carried by the PBCH. For instance, a value of one type of time domain resource information of the PDSCH carried by the PBCH corresponds to one type of frequency domain resource allocation information.

[0253] In one implementation, Figure 10 In the illustrated embodiment, the information transmission method may further include the following steps:

[0254] S1005. The terminal device determines the frequency domain resource information of the data channel based on the preset second information.

[0255] The second information includes at least one of the following: frequency domain location information of the synchronization signal block, the number of resources contained in the frequency domain resources of the data channel, the location of the frequency domain resources contained in the frequency domain resources of the data channel, and frequency domain offset information. The frequency domain resource information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0256] In this embodiment, when the terminal device and the network device pre-agree on the second information used to determine the frequency domain resource information, and when the frequency domain resource information of the data channel is not carried through the PBCH, the terminal device can deduce the frequency domain resource information of the data channel based on the pre-defined second information.

[0257] For example, the frequency domain resource information of the data channel refers to the frequency domain resources occupied by the data channel, which may include the first bandwidth where the data channel is located, the frequency domain location information of the first bandwidth, and the frequency domain resource allocation information within the first bandwidth.

[0258] The information transmission method provided in this application involves a network device determining time-domain indication information of time-domain resource information and transmitting indication information including this time-domain indication information through a physical broadcast channel. The terminal device then determines the time-domain indication information of the time-domain resource information based on this indication information, and further determines the time-domain resource information of the data channel based on the time-domain indication information. Furthermore, when the physical broadcast channel does not carry frequency-domain resource information of the data channel, the terminal device determines the frequency-domain resource information of the data channel based on preset second information. In this technical solution, the time-domain resource indication of the data channel carrying SIB1 is implemented through the PBCH, eliminating the need to detect the time-domain resource information of the PDSCH, thus reducing the power consumption and detection complexity of the terminal device.

[0259] It is understood that the embodiments of this application do not limit the scheduling information of the data channel carried by the PBCH, as described above. Figure 6 The illustrated embodiment mainly introduces a scheme for frequency domain resource information of the data channel carried by the PBCH. Figure 10 The illustrated embodiment primarily describes a scheme for carrying time-domain resource information of a data channel via a PBCH. In other embodiments of this application, network devices can carry frequency-domain and time-domain resource information of a data channel via a PBCH. Specific implementations of carrying frequency-domain and time-domain resource information of a data channel via a PBCH can be found in conjunction with the above description. Figure 6 and Figure 10 The description of the illustrated embodiment will not be repeated here.

[0260] Furthermore, in embodiments of this application, the scheduling information of the data channel carried by the PBCH also includes at least one of the following:

[0261] The mapping method from virtual resource blocks to physical resource blocks, the modulation and coding method, the redundancy version information, and the number of retransmissions.

[0262] For example, in this embodiment, assuming that one of the scheduling information is not carried through PBCH, then the information needs to satisfy at least one of the following conditions:

[0263] This information is pre-configured; this first information corresponds to the time-domain or frequency-domain resource information carried by the physical broadcast channel; and this information corresponds to other information included in the scheduling information.

[0264] For example, the scheduling-related information of PDSCH also includes the mapping method from virtual RB to physical RB, the modulation and coding method, and the redundancy version. One or more of these can be carried by PBCH or not.

[0265] Regarding the mapping method from virtual RB to physical RB, when this information is not carried through PBCH, the specific mapping method from virtual RB to physical RB can be fixed as either interleaved or non-interleaved. Alternatively, the mapping method from virtual RB to physical RB can correspond to the time-domain or frequency-domain resource information carried by PBCH, or it can correspond to the modulation and coding scheme, or it can correspond to the redundancy version, or it can correspond to the number of retransmissions of PDSCH, etc.

[0266] Regarding the modulation and coding scheme, when the information is not carried through the PBCH, the modulation and coding scheme can be a fixed one, or the modulation and coding scheme can correspond to the time-domain resource information or frequency-domain resource information carried by the PBCH, or the modulation and coding scheme can correspond to the retransmission count information carried by the PBCH.

[0267] For the redundant version, when the information is not carried through the PBCH, the redundant version can be a fixed redundant version, or the redundant version can correspond to the time-domain resource information or frequency-domain resource information carried by the PBCH, or the redundant version can correspond to the modulation and coding scheme.

[0268] Regarding the number of PDSCH retransmissions, when the information is not carried through PBCH, the number of PDSCH retransmissions can be predefined, such as a fixed setting; or, the number of PDSCH retransmissions can correspond to the frequency band; or, the number of PDSCH retransmissions can correspond to the time-domain or frequency-domain resource information carried by PBCH; or, the number of PDSCH retransmissions can correspond to the modulation and coding scheme; or, the number of PDSCH retransmissions can correspond to the redundant version.

[0269] It is understood that the embodiments of this application do not limit the specific method of determining each piece of information, which can be determined according to the actual scenario and needs, and will not be elaborated here.

[0270] The information transmission method provided in this application embodiment can also carry PDSCH scheduling information in addition to time-domain resource information and frequency-domain resource information. It realizes the way to obtain relevant scheduling information without detecting PDCCH, which reduces the power consumption and detection complexity of terminal equipment, improves the transmission performance of PDSCH, and determines the other part of the scheduling information by using part of the information included in the scheduling information, which reduces the number of bits of the scheduling information carried by PBCH and reduces the information redundancy carried by PBCH.

[0271] The foregoing describes the specific implementation of the information transmission method mentioned in the embodiments of this application. The following are embodiments of the apparatus of this application, which can be used to execute the embodiments of the method of this application. For details not disclosed in the embodiments of the apparatus of this application, please refer to the embodiments of the method of this application.

[0272] Figure 11 This is a schematic diagram of the structure of an embodiment of the information transmission device provided in this application. This device can be integrated into a terminal device or implemented through a terminal device. Figure 11 As shown, the device may include a receiving module 1101 and a processing module 1102.

[0273] The receiving module 1101 is used to receive indication information through a physical broadcast channel;

[0274] The processing module 1102 is used to determine the scheduling information of the data channel according to the indication information, wherein the data channel carries system messages, and the scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0275] In one possible design of this application embodiment, the processing module 1102 is specifically used to determine the frequency domain indication information of the frequency domain resource information according to the indication information, and to determine the frequency domain resource information of the data channel according to the frequency domain indication information;

[0276] The frequency domain indication information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0277] In one implementation, the frequency domain resource allocation method of the frequency domain resource allocation information is type 1.

[0278] As an example, the frequency domain resource allocation information includes: the number of resource blocks or the number of resource block groups.

[0279] As another example, the frequency domain resource allocation information includes: the number of resource blocks and the location information of the starting resource block;

[0280] or

[0281] The frequency domain resource allocation information includes: the number of resource block groups and the location information of the starting resource block group.

[0282] For example, the first bandwidth is the same in different time units, and the frequency domain position of the first bandwidth is the same in different time units.

[0283] For example, the first bandwidth is different in at least two time units, and / or the frequency domain position of the first bandwidth is different in at least two time units.

[0284] In this possible design of the present application, the processing module 1102 is further configured to determine the time-domain resource information of the data channel based on preset first information:

[0285] The first information includes at least one of the following:

[0286] Radio frame number, time slot number, cell identifier, synchronization signal block index, retransmission count, start symbol and number of symbols of the time slot in which the data channel is located, and time slot indication information;

[0287] The time-domain resource information includes at least one of the following:

[0288] The time slot in which the data channel is located, the starting symbol of the data channel within the time slot, and the number of symbols.

[0289] In one implementation, at least one piece of information in the time-domain resource information has a corresponding relationship with the frequency-domain resource information.

[0290] In another possible design of this application embodiment, the processing module 1102 is specifically used to determine the time domain indication information of the time domain resource information according to the indication information, and to determine the time domain resource information of the data channel according to the time domain indication information;

[0291] The time-domain indication information includes at least one of the following: the time slot in which the data channel is located, the start symbol in the time slot in which the data channel is located, and the length.

[0292] In one implementation, the information of the time slot where the data channel is located is determined based on at least one of the following:

[0293] Radio frame number, timeslot number, cell identifier, synchronization signal block index, retransmission count, and timeslot indication information.

[0294] In this possible design of the present application, the processing module 1102 is further configured to determine the frequency domain resource information based on preset second information;

[0295] The second information includes at least one of the following:

[0296] The frequency domain location information of the synchronization signal block, the number of resources contained in the frequency domain resources of the data channel, the location of the frequency domain resources contained in the frequency domain resources of the data channel, and the frequency domain offset information;

[0297] The frequency domain resource information includes at least one of the following:

[0298] First bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0299] In one implementation, at least one piece of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

[0300] In another possible design of this application, the scheduling information further includes at least one of the following:

[0301] The mapping method from virtual resource blocks to physical resource blocks, the modulation and coding method, the redundancy version information, and the number of retransmissions.

[0302] The apparatus provided in this embodiment is used to perform the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solutions on the terminal device side in the illustrated embodiments are similar in principle and technical effect, and will not be described again here.

[0303] Figure 12 This is a schematic diagram of the structure of Embodiment 2 of the information transmission device provided in this application. This device can be integrated into a network device or implemented through a network device. For example... Figure 12 As shown, the device may include a processing module 1201 and a sending module 1202.

[0304] The processing module 1201 is used to determine the scheduling information of the data channel, wherein the data channel carries system messages;

[0305] The sending module 1202 is used to send indication information of the scheduling information through a physical broadcast channel;

[0306] The scheduling information includes at least one of frequency domain resource information and time domain resource information.

[0307] In one possible design of this application embodiment, the processing module 1201 is further configured to determine frequency domain indication information of the frequency domain resource information, wherein the frequency domain indication information includes at least one of the following: a first bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth;

[0308] Correspondingly, the transmitting module 1202 is also used to transmit indication information including the frequency domain indication information through the physical broadcast channel.

[0309] In one implementation, the frequency domain resource allocation method of the frequency domain resource allocation information is type 1.

[0310] As an example, the frequency domain resource allocation information includes: the number of resource blocks or the number of resource block groups.

[0311] As another example, the frequency domain resource allocation information includes: the number of resource blocks and the location information of the starting resource block;

[0312] or

[0313] The frequency domain resource allocation information includes: the number of resource block groups and the location information of the starting resource block group.

[0314] In one embodiment of this application, the first bandwidth is the same in different time units, and the frequency domain position of the first bandwidth is the same in different time units.

[0315] In another embodiment of this application, the first bandwidth is different in at least two time units, and / or the frequency domain position of the first bandwidth is different in at least two time units.

[0316] In this possible design of the embodiments of this application, the time-domain resource information of the data channel is indicated by a preset first information;

[0317] The first information includes at least one of the following:

[0318] Radio frame number, time slot number, cell identifier, synchronization signal block index, retransmission count, start symbol and number of symbols of the time slot in which the data channel is located, and time slot indication information;

[0319] The time-domain resource information includes at least one of the following:

[0320] The time slot in which the data channel is located, the starting symbol of the data channel within the time slot, and the number of symbols.

[0321] In one implementation, at least one piece of information in the time-domain resource information has a corresponding relationship with the frequency-domain resource information.

[0322] In another possible design of this application embodiment, the processing module 1201 is further configured to determine the time domain indication information of the time domain resource information, wherein the time domain indication information includes at least one of the following: the time slot in which the data channel is located, the start symbol in the time slot in which the data channel is located, and the length;

[0323] Correspondingly, the sending module 1202 is used to send indication information including the time domain indication information through the physical broadcast channel.

[0324] In one implementation, the information of the time slot in which the data channel resides is indicated by at least one of the following:

[0325] Radio frame number, timeslot number, cell identifier, synchronization signal block index, retransmission count, and timeslot indication information.

[0326] In this possible design of the embodiments of this application, the frequency domain resource information is indicated by a preset second information;

[0327] The second information includes at least one of the following:

[0328] The frequency domain location information of the synchronization signal block, the number of resources contained in the frequency domain resources of the data channel, the location of the frequency domain resources contained in the frequency domain resources of the data channel, and the frequency domain offset information;

[0329] The frequency domain resource information includes at least one of the following:

[0330] First bandwidth, frequency domain location information of the first bandwidth, and frequency domain resource allocation information within the first bandwidth.

[0331] In one implementation, at least one piece of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

[0332] In another possible design of this application embodiment, the scheduling information further includes at least one of the following:

[0333] The mapping method from virtual resource blocks to physical resource blocks, the modulation and coding method, the redundancy version information, and the number of retransmissions.

[0334] The apparatus provided in this embodiment is used to perform the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solutions on the network device side of the illustrated embodiments are similar in principle and technical effect, and will not be described in detail here.

[0335] It should be noted that the division of the various modules in the above device is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. For example, a processing module can be a separate processing element, or it can be integrated into a chip within the above device. Alternatively, it can be stored as program code in the device's memory, and called and executed by a processing element of the device. The implementation of other modules is similar. Moreover, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0336] For example, these modules can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0337] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0338] Figure 13 A schematic diagram of the structure of the terminal device provided in this application. Figure 13 As shown, the terminal device may include: a processor 1301, a memory 1302, a receiver 1303, and an interface 1304 for communicating with network devices.

[0339] Among them, memory 1302 stores computer-executed instructions;

[0340] The processor 1301 executes the computer execution instructions stored in the memory 1302, causing the processor 1301 to perform the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solution on the terminal device side in the illustrated embodiment.

[0341] Figure 14 A schematic diagram of the network device provided in this application. Figure 14 As shown, the network device may include: a processor 1401, a memory 1402, a transmitter 1403, and an interface 1404 for communicating with terminal devices.

[0342] Among them, memory 1402 stores computer-executed instructions;

[0343] Processor 1401 executes computer execution instructions stored in memory 1402, causing processor 1401 to perform the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solution on the network device side in the illustrated embodiment.

[0344] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0345] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache.

[0346] Figure 15 This is a schematic block diagram of a communication system provided in an embodiment of this application. Figure 15 As shown, the communication system 1500 includes a terminal device 1501 and a network device 1502.

[0347] The terminal device 1501 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1502 can be used to implement the corresponding functions implemented by the network device in the above method. For details on the specific implementation principles and beneficial effects of the terminal device and network device, please refer to the descriptions in the above embodiments, which will not be repeated here.

[0348] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the aforementioned. Figure 5 , Figure 6 or Figure 10 The technical solution on the terminal device side in the illustrated embodiment.

[0349] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the aforementioned. Figure 5 , Figure 6 or Figure 10 The technical solution on the network device side in the illustrated embodiment.

[0350] This application also provides a program, which, when executed by a processor, performs the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solution of the terminal device in the illustrated embodiment.

[0351] This application also provides a program, which, when executed by a processor, performs the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solution on the network device side (base station) in the illustrated embodiment.

[0352] This application also provides a computer program product, including program instructions for implementing the aforementioned. Figure 5 , Figure 6 or Figure 10 The technical solution on the terminal device side in the illustrated embodiment.

[0353] This application also provides a computer program product, including program instructions for implementing the aforementioned. Figure 5 , Figure 6 or Figure 10 The technical solution on the network device side (base station) in the illustrated embodiment.

[0354] This application also provides a chip, including: a processing module and a communication interface, wherein the processing module is capable of performing the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solution on the terminal device side in the illustrated embodiment.

[0355] Furthermore, the chip also includes a storage module (e.g., a memory), which stores instructions, and a processing module executes the instructions stored in the storage module. Execution of the instructions stored in the storage module causes the processing module to perform the aforementioned operations. Figure 5 , Figure 6 or Figure 10 The technical solution on the terminal device side in the illustrated embodiment.

[0356] This application also provides a chip, including: a processing module and a communication interface, wherein the processing module is capable of performing the aforementioned... Figure 5 , Figure 6 or Figure 10 The technical solution on the network device side in the illustrated embodiment.

[0357] Furthermore, the chip also includes a storage module (e.g., a memory), which stores instructions, and a processing module executes the instructions stored in the storage module. Execution of the instructions stored in the storage module causes the processing module to perform the aforementioned operations. Figure 5 , Figure 6 or Figure 10 The technical solution on the network device side in the illustrated embodiment.

[0358] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0359] In the specific implementation of the aforementioned terminal devices and network devices, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules within the processor.

[0360] All or part of the steps in the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof.

Claims

1. A method of information transmission, characterized in that, The method comprises: receiving indication information through a physical broadcast channel, the indication information comprising scheduling information of a data channel; determining scheduling information of the data channel according to the indication information, the data channel carrying system messages, the scheduling information of the data channel comprising at least one of frequency domain resource information and time domain resource information of the data channel; the frequency domain resource information comprising a first bandwidth of the data channel, frequency domain position information corresponding to the first bandwidth of the data channel, and frequency domain resource allocation information within the first bandwidth of the data channel; the time domain resource information comprising a time slot in which the data channel is located, a starting symbol within the time slot in which the data channel is located, and a number of symbols within the time slot in which the data channel is located.

2. The method of claim 1, wherein, The frequency domain resource allocation manner of the frequency domain resource allocation information is type 1.

3. The method according to claim 1 or 2, characterized in that, The frequency domain resource allocation information comprises a number of resource blocks or a number of resource block groups.

4. The method according to claim 1 or 2, characterized in that, The frequency domain resource allocation information comprises a number of resource blocks and position information of a starting resource block. Or The frequency domain resource allocation information comprises a number of resource block groups and position information of a starting resource block group.

5. The method according to claim 1 or 2, characterized in that, The first bandwidths on different time units are the same, and the frequency domain positions of the first bandwidths on different time units are the same.

6. The method of claim 1 or 2, wherein, The first bandwidths on at least two time units are different, and / or the frequency domain positions of the first bandwidths on at least two time units are different.

7. The method according to claim 1 or 2, characterized in that, The method further comprises: determining time domain resource information of the data channel according to preset first information: The first information comprises at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, a starting symbol and a number of symbols of a time slot in which the data channel is located, and time slot indication information.

8. The method of claim 7, wherein, At least one piece of information in the time domain resource information has a corresponding relationship with the frequency domain resource information.

9. The method of claim 1 or 2, wherein, The time slot in which the data channel is located is determined according to at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, and time slot indication information.

10. The method of claim 1 or 2, wherein, The method further comprises: determining the frequency domain resource information according to preset second information; The second information comprises at least one of the following information: frequency domain position information of a synchronization signal block, a number of resources included in frequency domain resources of the data channel, a frequency domain resource position included in the frequency domain resources of the data channel, and frequency domain offset information.

11. The method of claim 10, wherein, At least one piece of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

12. The method of claim 1 or 2, wherein, The scheduling information further comprises at least one of the following information: a mapping manner of virtual resource blocks to physical resource blocks, a modulation and coding manner, redundancy version information, and a retransmission number.

13. An information transmission method characterized by comprising: The method comprises: determining scheduling information of a data channel, the data channel carrying system messages; sending indication information through a physical broadcast channel, the indication information comprising the scheduling information of the data channel; The scheduling information of the data channel comprises at least one of frequency domain resource information and time domain resource information of the data channel; the frequency domain resource information comprises a first bandwidth of the data channel, frequency domain position information corresponding to the first bandwidth of the data channel, and frequency domain resource allocation information within the first bandwidth of the data channel; and the time domain resource information comprises a time slot where the data channel is located, a starting symbol within the time slot where the data channel is located, and a symbol number within the time slot where the data channel is located.

14. The method of claim 13, wherein, The frequency domain resource allocation manner of the frequency domain resource allocation information is type 1.

15. The method according to claim 13 or 14, characterized in that, The frequency domain resource allocation information comprises a number of resource blocks or a number of resource block groups.

16. The method according to claim 13 or 14, characterized in that The frequency domain resource allocation information comprises a number of resource blocks and starting resource block position information. Or The frequency domain resource allocation information comprises a number of resource block groups and starting resource block group position information.

17. The method of claim 13 or 14, wherein, The first bandwidths on different time units are the same, and the frequency domain positions of the first bandwidths on different time units are the same.

18. The method of claim 13 or 14, wherein, The first bandwidths on at least two time units are different, and / or the frequency domain positions of the first bandwidths on at least two time units are different.

19. The method of claim 13 or 14, wherein, The time domain resource information of the data channel is indicated by preset first information. The first information comprises at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, a starting symbol and a symbol number of a time slot where the data channel is located, and time slot indication information.

20. The method of claim 19, wherein, At least one piece of information in the time domain resource information has a corresponding relationship with the frequency domain resource information.

21. The method of claim 13 or 14, wherein, The time slot where the data channel is located is indicated by at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, and time slot indication information.

22. The method of claim 13 or 14, wherein, The frequency domain resource information is indicated by preset second information. The second information comprises at least one of the following information: frequency domain position information of a synchronization signal block, a resource number contained by frequency domain resources of the data channel, frequency domain resource position contained by the frequency domain resources of the data channel, and frequency domain offset information.

23. The method of claim 22, wherein, At least one piece of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

24. The method of claim 13 or 14, wherein, The scheduling information further comprises at least one of the following information: a mapping manner of a virtual resource block to a physical resource block, a modulation and coding manner, redundancy version information, and a retransmission number.

25. An information transmission apparatus characterized by comprising: Comprise: a receiving module and a processing module; The receiving module is configured to receive indication information through a physical broadcast channel, wherein the indication information comprises scheduling information of a data channel. The processing module is configured to determine scheduling information of the data channel according to the indication information, the data channel carrying system messages, the scheduling information of the data channel including at least one of frequency domain resource information and time domain resource information of the data channel; the frequency domain resource information including a first bandwidth of the data channel, frequency domain position information corresponding to the first bandwidth of the data channel, and frequency domain resource allocation information within the first bandwidth of the data channel; and the time domain resource information including a time slot where the data channel is located, a starting symbol within the time slot where the data channel is located, and a number of symbols within the time slot where the data channel is located.

26. The apparatus of claim 25, wherein, The frequency domain resource allocation manner of the frequency domain resource allocation information is type 1.

27. The apparatus of claim 25 or 26, wherein, The frequency domain resource allocation information includes a number of resource blocks or a number of resource block groups.

28. The apparatus of claim 25 or 26, wherein, The frequency domain resource allocation information includes a number of resource blocks and starting resource block position information. Or The frequency domain resource allocation information includes a number of resource block groups and starting resource block group position information.

29. The apparatus of claim 25 or 26, wherein, The first bandwidths on different time units are the same, and frequency domain positions of the first bandwidths on different time units are the same.

30. The apparatus of claim 25 or 26, wherein, The first bandwidths on at least two time units are different, and / or the frequency domain positions of the first bandwidths on at least two time units are different.

31. The apparatus of claim 25 or 26, wherein, The processing module is further configured to determine time domain resource information of the data channel according to preset first information. The first information includes at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, a starting symbol and a number of symbols of a time slot where the data channel is located, and time slot indication information.

32. The apparatus of claim 31, wherein, At least one piece of information in the time domain resource information has a corresponding relationship with the frequency domain resource information.

33. The apparatus of claim 25 or 26, wherein, The time slot where the data channel is located is determined according to at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, and time slot indication information.

34. The apparatus of claim 25 or 26, wherein, The processing module is further configured to determine the frequency domain resource information according to preset second information. The second information includes at least one of the following information: frequency domain position information of a synchronization signal block, a number of resources included in frequency domain resources of the data channel, frequency domain resource position information included in the frequency domain resources of the data channel, and frequency domain offset information.

35. The apparatus of claim 34, wherein, At least one piece of information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

36. The apparatus of claim 25 or 26, wherein, The scheduling information further includes at least one of the following information: a mapping manner of a virtual resource block to a physical resource block, a modulation and coding manner, redundancy version information, and a retransmission number.

37. An information transmission apparatus, characterized by comprising: Comprising: a processing module and a sending module; The processing module is configured to determine scheduling information of a data channel, the data channel carrying system messages. The sending module is configured to send indication information through a physical broadcast channel, the indication information including the scheduling information of the data channel. The scheduling information of the data channel comprises at least one of frequency domain resource information and time domain resource information of the data channel; the frequency domain resource information comprises a first bandwidth of the data channel, frequency domain position information corresponding to the first bandwidth of the data channel, and frequency domain resource allocation information within the first bandwidth of the data channel; and the time domain resource information comprises a time slot where the data channel is located, a starting symbol within the time slot where the data channel is located, and a number of symbols within the time slot where the data channel is located.

38. The device of claim 37, wherein, The frequency domain resource allocation manner of the frequency domain resource allocation information is type 1.

39. The device of claim 37 or 38, wherein, The frequency domain resource allocation information comprises a number of resource blocks or a number of resource block groups.

40. The device of claim 37 or 38, wherein, The frequency domain resource allocation information comprises a number of resource blocks and position information of a starting resource block. Or The frequency domain resource allocation information comprises a number of resource block groups and position information of a starting resource block group.

41. The device of claim 37 or 38, wherein, The first bandwidths on different time units are the same, and frequency domain positions of the first bandwidths on different time units are the same.

42. The device of claim 37 or 38, wherein, The first bandwidths on at least two time units are different, and / or the frequency domain positions of the first bandwidths on at least two time units are different.

43. The device of claim 37 or 38, wherein, The time domain resource information of the data channel is indicated by preset first information. The first information comprises at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, a starting symbol and a number of symbols of a time slot where the data channel is located, and time slot indication information.

44. The device of claim 43, wherein, At least one of the information in the time domain resource information has a corresponding relationship with the frequency domain resource information.

45. The device of claim 37 or 38, wherein, The time slot where the data channel is located is indicated by at least one of the following information: a radio frame number, a time slot number, a cell identifier, a synchronization signal block index, a retransmission number, and time slot indication information.

46. The device of claim 37 or 38, wherein, The frequency domain resource information is indicated by preset second information. The second information comprises at least one of the following information: frequency domain position information of a synchronization signal block, a number of resources included in the frequency domain resource of the data channel, a frequency domain resource position included in the frequency domain resource of the data channel, and frequency domain offset information.

47. The device of claim 46, wherein, At least one of the information in the frequency domain resource information has a corresponding relationship with the time domain resource information.

48. The apparatus of any one of claims 37 or 38, wherein, The scheduling information further comprises at least one of the following information: a mapping manner of a virtual resource block to a physical resource block, a modulation and coding manner, redundancy version information, and a retransmission number.

49. A terminal device, comprising: Comprise: a processor, a memory, a receiver, and an interface for communicating with a network device; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the processor executes the method in any one of claims 1-12.

50. A network device, comprising: Comprise: a processor, a memory, a transmitter, and an interface for communicating with a terminal device; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, so that the processor executes the method in any one of claims 13-24.

51. A computer-readable storage medium, comprising: The computer readable storage medium stores computer-executable instructions that, when executed by a processor, implement the method of any of claims 1-12.

52. A computer-readable storage medium, comprising: The computer readable storage medium stores computer-executable instructions that, when executed by a processor, implement the method of any of claims 13-24.

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