Communication method and related equipment

Abstract

The invention provides a communication method and related equipment, and relates to the technical field of communication. The method is applied to communication equipment, and comprises the following steps: in a physical downlink control channel (PDCCH), downlink control information (DCI) is sent, and the DCI comprises repeated transmission frequency information of system information in a physical downlink shared channel (PDSCH); and repeatedly sending the system information in the PDSCH according to the repeated transmission frequency information. Therefore, the system information in the PDSCH is repeatedly sent for multiple times according to the repeated transmission times indicated by the DCI in the PDCCH, so that the corresponding transmission performance requirements are met, the downlink coverage is enhanced, and the communication quality is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and related devices. Background Art

[0002] Since traditional terrestrial networks cannot provide wide-area coverage, especially in places such as the sea, desert, and air where it is impossible or difficult to deploy base stations, with the development of communication technologies, especially the continuous development of new-generation mobile communication technologies such as the fifth-generation mobile networks (5G for short), the new radio non-terrestrial network (NR NTN) technology has emerged as the times require.

[0003] NTN satellite communication technology refers to the communication between network devices and terminal devices through satellites. A satellite communication system consists of a satellite part and a terrestrial part. The terrestrial part includes network devices such as base stations and core networks, and terminal devices. Among them, the terminal can be a user equipment (UE). The base station can communicate with the terminal on the downlink or uplink. Specifically, the uplink refers to the link for the terminal to send data to the base station, and the downlink refers to the link for the base station to send data to the terminal. Each base station usually has a coverage area, also known as a coverage region.

[0004] In related technologies, in order to achieve wide-area coverage of the network through satellite communication technology, the satellite needs to simultaneously send multiple downlink beams. However, the satellite cannot concentrate the energy in a few beams, so the signal energy cannot be concentrated, resulting in a decline in the transmission quality of the wireless link and limited downlink coverage. Therefore, how to enhance the downlink coverage and improve the communication quality has become a key concern in the industry. Summary of the Invention

[0005] The purpose of this application is to provide a communication method and related devices, which can enhance the downlink coverage and improve the communication quality.

[0006] In a first aspect, this application provides a communication method, which is applied to a network device and includes: sending downlink control information (DCI) in a physical downlink control channel (PDCCH), where the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel (PDSCH); and repeating the transmission of the system information in the PDSCH according to the information on the number of repeated transmissions. Thus, according to the number of repeated transmissions indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly transmitted multiple times, so as to meet the corresponding transmission performance requirements, enhance the downlink coverage, and improve the communication quality.

[0007] In some specific implementation manners, the network device stores a first PDSCH retransmission count information list, where the first PDSCH retransmission count information list includes indication information and retransmission count information; in a physical downlink control channel PDCCH, downlink control information DCI is sent, and the DCI includes the retransmission count information of system information in a physical downlink shared channel PDSCH, including: sending a DCI signaling in the PDCCH, where the DCI signaling includes indication information; based on the retransmission count information corresponding to the indication information in the first PDSCH retransmission count information list, sending the retransmission count information corresponding to the indication information through the DCI. The network device can determine the first PDSCH retransmission count information list based on protocol agreements, and flexibly determine the retransmission count of the PDSCH based on the first PDSCH retransmission count information list, so as to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0008] In some specific implementation manners, in a physical downlink control channel PDCCH, downlink control information DCI is sent, and the DCI indicates the retransmission count information of system information in the PDSCH, including: configuring a second PDSCH retransmission count information list through a high-layer signaling, where the second PDSCH retransmission count information list includes indication information and retransmission count information; sending a DCI signaling in the PDCCH, and sending the second PDSCH retransmission count information list through a system information block SI B signaling, where the DCI signaling includes indication information; in the second PDSCH retransmission count information list, sending the retransmission count information corresponding to the indication information through the DCI. Thus, according to the retransmission count indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly sent multiple times, so as to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0009] In some specific implementation manners, in a physical downlink control channel PDCCH, downlink control information DCI is sent, and the DCI indicates the retransmission count information of system information in the PDSCH, including: configuring a third PDSCH retransmission count information list through a high-layer signaling, where the third PDSCH retransmission count information list includes indication information and retransmission count information; sending a DCI signaling in the PDSCH, and sending the third PDSCH retransmission count information list through a radio resource control RRC signaling, where the DCI signaling includes indication information; in the third PDSCH retransmission count information list, sending the retransmission count information corresponding to the indication information through the DCI. Thus, according to the retransmission count indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly sent multiple times, so as to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0010] In some specific implementation manners, the PDSCH is the PDSCH scheduled by the first format DCI that scrambles the cyclic redundancy check code CRC with the system information radio network temporary identity SI-RNTI.

[0011] In some specific implementation manners, the PDSCH is the PDSCH scheduled by the first format DCI that scrambles the CRC with the random access radio network temporary identity RA-RNTI, the message B radio network temporary identity MsgB-RNTI, or the paging indication radio network temporary identity P-RNTI.

[0012] In some specific implementation manners, the PDSCH is the PDSCH scheduled by the first format DCI that scrambles the CRC with the cell radio network temporary identity C-RNTI, the configured scheduling radio network temporary identity CS-RNTI, or the modulation and coding scheme radio network temporary identity MCS-RNTI.

[0013] In some specific implementation manners, the PDSCH is the PDSCH scheduled by the second format DCI that scrambles the CRC with the cell radio network temporary identity C-RNTI, the configured scheduling radio network temporary identity CS-RNTI, or the modulation and coding scheme radio network temporary identity MCS-RNTI.

[0014] In some specific implementation manners, the information on the number of repeated transmissions corresponding to the indication information is sent, including: using the reserved bits of the DCI to send the information on the number of repeated transmissions corresponding to the indication information; or, using the specific state of the existing field of the DCI to send the information on the number of repeated transmissions corresponding to the indication information; or, using the specific bits of the existing field of the DCI to send the information on the number of repeated transmissions corresponding to the indication information. Thereby, according to the number of repeated transmissions indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly sent multiple times, so as to meet the corresponding transmission performance requirements, enhance the downlink coverage, and improve the communication quality.

[0015] In some specific implementation manners, the information on the number of repeated transmissions corresponding to the indication information is sent, including: using the specific state of the existing field of the DCI to send the information on the number of repeated transmissions corresponding to the indication information; or, using the specific bits of the existing field of the DCI to send the information on the number of repeated transmissions corresponding to the indication information; or, by adding a new field to the DCI, sending the information on the number of repeated transmissions corresponding to the indication information. Thereby, according to the number of repeated transmissions indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly sent multiple times, so as to meet the corresponding transmission performance requirements, enhance the downlink coverage, and improve the communication quality.

[0016] Second aspect, the present application provides a communication method, which is applied to a terminal device and includes: receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI indicates the number of repetitions of system information in a physical downlink shared channel PDSCH; and receiving and / or combining the system information in the received PDSCH according to the number of repetitions. Thereby meeting the corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0017] In some specific implementation manners, receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes the number of repetitions information of system information in a physical downlink shared channel PDSCH, includes: receiving a DCI signaling in the PDCCH, where the DCI signaling includes indication information; and receiving, based on a first PDSCH number of repetitions information list, the number of repetitions information corresponding to the indication information through the DCI. Thereby meeting the corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0018] In some specific implementation manners, receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes the number of repetitions information of system information in a physical downlink shared channel PDSCH, includes: receiving a DCI signaling in the PDCCH, and receiving, through a system information block SIB signaling, a second PDSCH number of repetitions information list, where the second PDSCH number of repetitions information list includes indication information and the number of repetitions information; and receiving, based on the second PDSCH number of repetitions information list, the number of repetitions information corresponding to the indication information through the DCI. Thereby meeting the corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0019] In some specific implementation manners, receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes the number of repetitions information of system information in a physical downlink shared channel PDSCH, includes: receiving a DCI signaling in the PDCCH, and receiving, through a radio resource control RRC signaling, a third PDSCH number of repetitions information list, where the third PDSCH number of repetitions information list includes indication information and the number of repetitions information; and receiving, based on the third PDSCH number of repetitions information list, the number of repetitions information corresponding to the indication information through the DCI. Thereby meeting the corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0020] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a first format DCI that scrambles a cyclic redundancy check code CRC with a system information radio network temporary identity SI-RNTI.

[0021] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a first format DCI that scrambles a cyclic redundancy check (CRC) with a random access radio network temporary identifier (RA-RNTI), a message B radio network temporary identifier (MsgB-RNTI), or a paging indication radio network temporary identifier (P-RNTI).

[0022] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a first format DCI that scrambles a cyclic redundancy check (CRC) with a random access radio network temporary identifier (RA-RNTI), a message B radio network temporary identifier (MsgB-RNTI), or a paging indication radio network temporary identifier (P-RNTI).

[0023] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a second format DCI that scrambles a cyclic redundancy check (CRC) with a cell radio network temporary identifier (C-RNTI), a configured scheduling radio network temporary identifier (CS-RNTI), or a modulation and coding scheme radio network temporary identifier (MCS-RNTI).

[0024] In some specific implementation manners, receiving repetition transmission times information corresponding to indication information includes: using reserved bits of a DCI to receive repetition transmission times information corresponding to the indication information; or using a specific state of an existing field of the DCI to receive repetition transmission times information corresponding to the indication information; or using a specific bit of an existing field of the DCI to receive repetition transmission times information corresponding to the indication information. Thereby, according to the repetition transmission times indicated by the DCI in the PDCCH, receiving and / or combining system information in the received PDSCH, so as to meet corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0025] In some specific implementation manners, receiving repetition transmission times information corresponding to indication information includes: using a specific state of an existing field of the DCI to receive repetition transmission times information corresponding to the indication information; or using a specific bit of an existing field of the DCI to receive repetition transmission times information corresponding to the indication information; or adding a new field to the DCI to receive repetition transmission times information corresponding to the indication information. Thereby, according to the repetition transmission times indicated by the DCI in the PDCCH, receiving and / or combining system information in the received PDSCH, so as to meet corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0026] In a third aspect, the present application provides an electronic device, where the electronic device includes: a memory for storing a computer program or computer instructions; and a processor for executing the computer program or computer instructions stored in the memory, so that the electronic device executes the method according to the first aspect.

[0027] Fourthly, the present application provides an electronic device, which includes: a memory for storing a computer program or computer instructions; a processor for executing the computer program or computer instructions stored in the memory, so that the electronic device executes the method according to the second aspect.

[0028] Fifthly, the present application provides a communication system, which includes a network device and a terminal device. The network device is used to execute the method according to the first aspect, and the terminal device is used to execute the method according to the second aspect.

[0029] Sixthly, the present application provides a computer storage medium for storing a computer program, which is used to implement the methods according to the first aspect and the second aspect when the computer program is executed.

[0030] Seventhly, the present application provides a communication device, which is applied to an electronic device and includes: a control information sending module and a system information sending module; the control information sending module is used to send downlink control information DCI in a physical downlink control channel PDCCH, and the DCI includes the repetition transmission times information of the system information in a physical downlink shared channel PDSCH; the system information sending module is used to repeatedly send the system information in the PDSCH according to the repetition transmission times information. Thus, according to the repetition transmission times indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly sent multiple times, so as to meet the corresponding transmission performance requirements, enhance the downlink coverage, and improve the communication quality.

[0031] Eighthly, the present application provides a communication device, which is applied to an electronic device and includes: a control information receiving module and a system information receiving module; the control information receiving module is used to receive downlink control information DCI in a physical downlink control channel PDCCH, and the DCI includes the repetition transmission times information of the system information in a physical downlink shared channel PDSCH; the system information receiving module is used to receive and / or combine the received system information in the PDSCH according to the repetition transmission times information, so as to meet the corresponding transmission performance requirements, enhance the downlink coverage, and improve the communication quality.

[0032] Based on the above technical solutions, the present application has the following beneficial effects:

[0033] The present application provides a communication method and related devices. In the PDCCH, the downlink control information DCI is sent, and the DCI includes the repetition transmission times information indicating the system information in the PDSCH; the system message is repeatedly sent according to the transmission times information. Thus, according to the repetition transmission times indicated by the DCI in the PDCCH, the system information in the PDSCH is repeated multiple times to meet the corresponding transmission performance requirements, strengthen the downlink coverage, and improve the communication efficiency. Description of the Drawings

[0034] Figure 1 This is a schematic diagram of a scenario for communication between a base station and a terminal provided by an embodiment of the present application;

[0035] Figure 2 This is a flowchart of a communication method provided by an embodiment of the present application;

[0036] Figure 3 This is a flowchart of another communication method provided by an embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the hardware composition of an electronic device provided by an embodiment of the present application;

[0038] Figure 5 This is a schematic diagram of the hardware composition of another electronic device provided by an embodiment of the present application;

[0039] Figure 6 This is a schematic diagram of a communication device provided by an embodiment of the present application;

[0040] Figure 7 This is a schematic diagram of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0041] The terms "first", "second", "third", etc. in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to limit a specific order.

[0042] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0043] The embodiments of the present application are applied to a communication system. Among them, the communication system can be a second-generation (2G) communication system, a third-generation (3G) communication system, an LTE system, a fifth-generation (5G) communication system, or a hybrid architecture of Long-Term Evolution (LTE) and 5G, or a 5G New Radio (5GNR) system, as well as new communication systems emerging in the future development of communication, etc.

[0044] The communication system includes a network device and a terminal device. The network device can be a device on the network side for providing network communication functions, and in some cases is also referred to as a network device or a network element. The network device can usually be a base station (including the functional units of the base station, or a combination of the functional units of the base station) or a core network unit. Among them, the core network unit can be a functional unit in the core network, including but not limited to an Access and Mobility Management Function (AMF) unit or a Session Management Function (SMF) unit. The terminal device can be a device accessing the network and is usually a terminal. See Figure 1 , which is a scenario example diagram of communication between a base station and a terminal provided by an embodiment of this application. Figure 1 It includes base station 1 and terminal 2.

[0045] In the embodiments provided by this application, the base station can be any device with wireless transceiver functions, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in Long Term Evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point / transmission reception point (TRP) in New Radio (NR), a base station evolved by 3GPP in the future, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station can include one or more co-site or non-co-site transmission reception points (TRPs). The base station can also be a radio controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with the terminal or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies. For example, the terminal can communicate with a base station supporting an LTE network, can also communicate with a base station supporting a 5G network, and can also perform dual connection with a base station supporting an LTE network and a 5G network.

[0046] In the embodiments provided in this application, the terminal can be in various forms. For example, a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, and so on. Sometimes the terminal can also be referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile platform, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE device, etc. The terminal can also be a fixed terminal or a mobile terminal.

[0047] As described above, since traditional terrestrial networks cannot provide wide-area coverage, especially in areas where base stations cannot be deployed, such as the sea, desert, air, etc., satellite communication technology has emerged as the times require.

[0048] Satellite communication technology has the following characteristics. First, the communication range of satellite communication technology is large. As long as it is within the range covered by the radio waves emitted by the satellite, communication can be carried out between any two points. For areas that cannot be covered by the current cellular communication system or where the coverage cost is relatively high, satellite communication can be used to solve the communication problem. Second, satellite communication technology is not easily affected by terrestrial disasters and has high reliability. In extreme situations such as disasters (such as earthquakes), when the infrastructure of cellular communication becomes unavailable, satellite communication can be used to quickly establish a communication connection. Third, the latency of satellite communication technology is relatively low, and it can provide industry applications. For example, for latency-sensitive services with long-distance transmission, the latency of service transmission can be reduced through satellite communication.

[0049] In the related art, in the project discussion of 3GPP R19 NTN (Non-Terrestrial Network) proposed by a standardization organization such as the 3rd Generation Partnership Project (3GPP), considering using satellite communication technology to achieve wide-area network coverage, it is required that the base station transmit multiple downlink beams at the same time. Among them, a beam is a communication resource. The beam can be a wide beam, or a narrow beam, or other types of beams, and the technology for forming the beam can be beamforming technology or other technical means.

[0050] However, due to the limitation of satellite transmission power and the large propagation loss of satellite communication, the coverage quality of the satellite communication downlink is poor, resulting in the deterioration of the downlink communication quality.

[0051] In view of this, the present application provides a communication method and related devices. In PDCCH, the method transmits downlink control information (DCI), and the DCI contains information indicating the number of repeated transmissions of system information in the physical downlink shared channel (PDSCH); and repeatedly transmits the system message according to the information on the number of repeated transmissions. Thus, according to the number of repeated transmissions indicated by the DCI in the PDCCH, the system information in the PDSCH is repeated multiple times to meet the corresponding transmission performance requirements, strengthen the downlink coverage, and improve the communication quality. To make the technical solution of the present application clearer and easier to understand, the communication method of the present application will be introduced below with reference to the accompanying drawings. CC See, this figure is a schematic diagram of a communication method provided by an embodiment of the present application. This communication method can be executed by a network device in a communication system, and the network device can be a network device, such as a base station, etc. The method includes the following steps:

[0052] See Figure 2 , this figure is a schematic diagram of a communication method provided by an embodiment of the present application. This communication method can be executed by a network device in a communication system, and the network device can be a network device, such as a base station, etc. The method includes the following steps:

[0053] S201: The network device agrees on a list of information on the number of repeated transmissions of the first physical downlink shared channel (PDSCH) through a protocol, or the network device configures a second list of information on the number of repeated transmissions of the PDSCH or a third list of information on the number of repeated transmissions of the PDSCH through a high-layer signaling.

[0054] The physical downlink shared channel (PDSCH) is a type of physical downlink channel and is a downlink channel for carrying system information such as main user data. The number of repeated transmissions of the PDSCH refers to the number of times of repeating the transmission of the system information carried in the PDSCH.

[0055] It should be noted that the number of retransmission times here can be the number of times of retransmitting the system information after the first transmission of the system information, or can be the number of times of transmitting the system information including the first transmission. The present application does not limit the specific number of retransmission times.

[0056] In some specific implementation manners, the network device can agree on a first PDSCH retransmission times information list through a protocol. Refer to Table 1, which is a schematic table of a first PDSCH retransmission times information list provided by an embodiment of the present application. According to the protocol, a first PDSCH retransmission times information list as shown in Table 1 can be constructed. Exemplarily, when the indication information I Rep is 0, the retransmission times N Rep is determined to be 1; when the indication information I Rep is 1, the retransmission times N Rep is determined to be 2, etc. The present application does not limit the specific first PDSCH retransmission times information list.

[0057] Table 1

[0058] <![CDATA[Indicator information I Rep > <![CDATA[Number of retransmission N Rep > 0 1 1 2 2 4 3 8 … …

[0059] It should be noted that the correspondence between the indication information and the retransmission times in the first PDSCH retransmission times information list may be related to factors such as the downlink control information (DCI) delay time and the communication path loss. Specifically, if the DCI delay time is large, then retransmissions can be performed multiple times to provide the transmission quality of wireless communication; if the DCI delay time is small, then fewer retransmissions can be performed, or even only one transmission, that is, the retransmission times can be in a proportional relationship with the DCI delay; if the communication path loss is large, then retransmissions can be performed multiple times to improve the transmission quality of wireless communication; if the communication path loss is small, then fewer retransmissions can be performed, or even only one transmission, that is, the communication path loss can also be in a positive correlation with the DCI delay.

[0060] In some other specific implementation manners, the network device can also agree on a first PDSCH retransmission level list according to factors such as the DCI delay time and the communication path loss (Pass-loss) through a protocol. Exemplarily, when the indication information I Rep is 0, the retransmission level is determined to be the first level; when the indication information I RepWhen it is 1, determine that the retransmission level is the second level, etc. Among them, the first level can be a level with a higher retransmission priority than the second level, or a level with a lower retransmission priority than the second level. For this, the present application does not make a limitation.

[0061] In the communication method disclosed in the embodiments of the present application, the network device can determine the first PDSCH retransmission count information list based on the path loss or the DCI delay time, so that the network device can dynamically adjust the retransmission count of the PDSCH to meet the corresponding transmission performance requirements, ensure the transmission performance of the wireless link, enhance the downlink coverage, and improve the communication quality.

[0062] In some other specific implementation manners, the network device can also configure a second PDSCH retransmission count information list through higher-layer signaling. The second PDSCH retransmission count information list is similar to the first PDSCH retransmission count information list and is also composed of indication information and the retransmission count.

[0063] In some other specific implementation manners, the network device can also configure a third PDSCH retransmission count information list through higher-layer signaling. The third PDSCH retransmission count information list is similar to the first PDSCH retransmission count information list and the second PDSCH retransmission count information list and is also composed of indication information and the retransmission count.

[0064] It should be noted that the configuration of the above first PDSCH retransmission count information list, second PDSCH retransmission count information list, and third PDSCH retransmission count information list can be selected to execute one of them.

[0065] S202: The network device sends a DCI scheduling signal and PDSCH retransmission count indication information to the terminal device.

[0066] The DCI scheduling signal (i.e., the DCI signal) indicates that the network device starts to send downlink control information DCI to the terminal device in the physical downlink shared channel PDSCH, and the DCI signal includes indication information.

[0067] The PDSCH retransmission count indication information is the PDSCH retransmission count list, which can be the first PDSCH retransmission count information list, or the second PDSCH retransmission count information list or the third PDSCH retransmission count information list.

[0068] In some specific implementation manners, if the PDSCH repetition transmission count list is the first PDSCH repetition transmission count information list, the network device may directly send DCI scheduling signaling including indication information to the terminal device, so that the repetition transmission count corresponding to the indication information can be indicated in the first PDSCH repetition transmission count information list.

[0069] In some specific implementation manners, if the PDSCH repetition transmission count list is the second PDSCH repetition transmission count information list, the network device may send DCI scheduling signaling including indication information to the terminal device and also send the second PDSCH repetition transmission count information list to the terminal device, so that the repetition transmission count corresponding to the indication information can be indicated in the second PDSCH repetition transmission count information list.

[0070] In some specific implementation manners, if the PDSCH repetition transmission count list is the third PDSCH repetition transmission count information list, the network device may send DCI scheduling signaling including indication information to the terminal device and also send the third PDSCH repetition transmission count information list to the terminal device, so that the repetition transmission count corresponding to the indication information can be indicated in the third PDSCH repetition transmission count information list.

[0071] In some examples, the ways for the network device to send the second PDSCH repetition transmission count information list to the terminal device may be as follows:

[0072] The network device may send a System Information Block (SIB) signaling to the terminal device, and the SIB signaling includes an SIB message. In 5G NR, the SIB message carries information on whether to allow the terminal device to access the coverage area of the network device (i.e., information on whether the user equipment is allowed to access the cell), and basic information required when the terminal device accesses the coverage area of the network device, which is the above-mentioned second PDSCH repetition transmission count information list for indicating candidate repetition transmission counts of the PDSCH. That is to say, the network device may send the second PDSCH repetition transmission count information list by sending SIB information to the terminal device, so that after combining with the indication information in the DCI scheduling signaling, both the network device and the terminal device can obtain the repetition transmission count corresponding to the indication information.

[0073] In some examples, the ways for the network device to send the third PDSCH repetition transmission count information list to the terminal device may be as follows:

[0074] The network device may send Radio Resource Control (RRC) signaling to the terminal device. Among them, the RRC signaling is wireless signaling or lower-layer signaling, and the RRC signaling is used to handle the signaling interaction between the network device and the terminal device. The 3GPP specification TS36.331 defines the RRC signaling in detail. The third PDSCH retransmission count information list may be carried in the RRC signaling, which is used to indicate the PDSCH candidate retransmission count. That is to say, the network device may send the RRC signaling carrying the third PDSCH retransmission count information list to the terminal device to send the PDSCH retransmission count list, so that after combining the indication information in the DCI scheduling signaling, both the network device and the terminal device can obtain the retransmission count corresponding to the indication information.

[0075] Subsequently, the network device needs to indicate the retransmission count of the PDSCH. The process of the network device sending the downlink control information DCI to the terminal device is the process of the network device indicating the retransmission count of the PDSCH to the terminal device.

[0076] In the communication method disclosed in the embodiments of the present application, there are two formats of DCI for scheduling the PDSCH, one is the DCI1_0 format (i.e., the first format), and the other is the DCI1_1 format (i.e., the second format). Among them, the DCI1_0 format is the fallback DCI format, and the DCI1_1 format is the non-fallback DCI format.

[0077] In the communication method disclosed in the embodiments of the present application, when the PDSCH channel is transmitted, a Cyclic Redundancy Check (CRC) is added to the transmitted payload, that is, the PDSCH channel is scrambled with CRC.

[0078] In some specific implementation manners, the PDSCH may be the PDSCH scheduled by the DCI 1_0 scrambled with the SI-RNTI. Among them, RNTI (Radio Network Temporay Identifier) is the radio network temporary identifier. SI-RNTI (System Information RNTI) represents the system message radio network temporary identifier, which is used for the transmission of SIB information.

[0079] Then, the retransmission count of the PDSCH may be determined according to the indication information in the DCI scheduling signaling and the first PDSCH retransmission count information list (i.e., Table 1) agreed upon in the protocol in step S201. That is to say, one value of the indication information in the DCI scheduling signaling indicates one value in the first PDSCH retransmission count information list.

[0080] In some other specific implementation manners, the PDSCH may also be the PDSCH scheduled by DCI 1_0 with the RA-RNTI / MsgB-RNTI / P-RNTI scrambling the CRC. Among them, RA-RNTI (Random Access RNTI) represents the random access radio network temporary identity, which is used for the response of the Physical Random Access Channel (PRACH). MsgB-RNTI represents the second structure radio network temporary identity. P-RNTI (Paging RNTI) represents the paging indication radio network temporary identity, which is used to resolve the paging information.

[0081] Then, the retransmission times of the PDSCH can be determined according to the indication information in the DCI scheduling signaling and the list of the second PDSCH retransmission times information configured by the higher layer signaling in step S202. That is to say, a value of the indication information in the DCI scheduling signaling indicates a value in a list of the second PDSCH retransmission times information.

[0082] It should be noted that the list of the second PDSCH retransmission times information here may be the list of retransmission times information sent from the network device to the terminal device through the SIB message.

[0083] In some other specific implementation manners, the PDSCH may also be the PDSCH scheduled by DCI 1_0 with the Cell RNTI (C-RNTI), the Configured Scheduled RNTI (CS-RNTI) or the Modulation Coding Scheme Cell RNTI (MCS-RNTI) scrambling the CRC; or, the PDSCH may also be the PDSCH scheduled by DCI 1_1 with the Cell RNTI (C-RNTI), the Configured Scheduled RNTI (CS-RNTI) or the Modulation Coding Scheme Cell RNTI (MCS-RNTI) scrambling the CRC. Among them, C-RNTI (Cell RNTI) represents the cell radio network temporary identity, which is a unique identity used to identify the RRC connection and scheduling dedicated to a specific UE. CS-RNTI (Configured Scheduled RNTI) represents the configured scheduled radio network temporary identity, which is used for the semi-persistent scheduling of the downlink or the uplink grant configuration. MCS-RNTI (Modulcation Coding Scheme Cell RNTI) represents the modulation coding scheme radio network temporary identity, which is used to indicate the MCS table option of the PDSCH and PUSCH channels.

[0084] Then, the retransmission count of the PDSCH can be determined according to the indication information in the DCI scheduling signaling and the list of the third PDSCH retransmission count information configured by the higher layer signaling in step S202. That is to say, a value of the indication information in the DCI scheduling signaling indicates a value in a list of the third PDSCH retransmission count information.

[0085] It should be noted that the list of the third PDSCH retransmission count information here can be a list of retransmission count information sent from the network device to the terminal device through the RRC signaling.

[0086] Next, the specific indication method of the PDSCH retransmission count information in the common search space (CSS) in the above situation will be described:

[0087] If the PDSCH is a DCI 1_0 format with CRC scrambled by SI-RNTI / RA-RNTI / MsgB-RNTI / P-RNTI in the common search space CSS, then there are three ways to indicate the retransmission count of the PDSCH:

[0088] First, some or all of the reserved bits of the DCI can be used to indicate the retransmission count of the PDSCH. Second, a specific state of an existing field of the DCI can be used to indicate the retransmission count of the PDSCH. Exemplarily, the highest M states of the modulation and coding scheme (MCS) field in the DCI can be used to indicate the retransmission count of the PDSCH. Third, specific bits of an existing field of the DCI can be used to indicate the retransmission count of the PDSCH. Exemplarily, the highest N bits of the MCS field can be used to indicate the retransmission count of the PDSCH.

[0089] If the PDSCH is a DCI 1_0 format with CRC scrambled by TC-RANTI in the common search space CSS, then there are two ways to indicate the retransmission count of the PDSCH:

[0090] First, a specific state of an existing field of the DCI can be used to indicate the retransmission count of the PDSCH. Exemplarily, the highest M states of the MCS field can be used to indicate the retransmission count of the PDSCH. Second, specific bits of an existing field can be used to indicate the retransmission count of the PDSCH. Exemplarily, the highest N bits of the MCS field can be used to indicate the retransmission count of the PDSCH.

[0091] Next, the specific indication method of the PDSCH retransmission count information in the UE-specific search space (USS) in the above situation will be described:

[0092] If the physical downlink shared channel PDSCH is DCI 1_0 scrambled by C-RNTI / CS-RNTI / MCS-RNTI in the UE-specific search space USS, then there are three ways to indicate the PDSCH retransmission count:

[0093] First, some or all of the reserved bits of the DCI can be used to indicate the PDSCH retransmission count. Second, the specific state of the existing field of the DCI can be used to indicate the PDSCH retransmission count. Exemplarily, the highest M states of the MCS field in the DCI can be used to indicate the PDSCH retransmission count. Third, the specific bits of the existing field of the DCI can be used to indicate the PDSCH retransmission count. Exemplarily, the highest N bits of the MCS field can be used to indicate the PDSCH retransmission count.

[0094] If the PDSCH is DCI1_1 scrambled by C-RNTI / CS-RNTI / MCS-RNTI in the UE-specific search space USS, then there are three ways to indicate the PDSCH retransmission count:

[0095] First, the specific state of the existing field of the DCI can be used to indicate the PDSCH retransmission count. Exemplarily, the highest M states of the MCS field in the DCI can be used to indicate the PDSCH retransmission count. Second, the specific bits of the existing field of the DCI can be used to indicate the PDSCH retransmission count. Exemplarily, the highest N bits of the MCS field can be used to indicate the PDSCH retransmission count. Third, a new field can be added to the DCI, and this new field is used to indicate the PDSCH retransmission count.

[0096] S203: The network device sends the system information carried on the PDSCH to the terminal device according to the retransmission count.

[0097] After determining the retransmission count, the network device can send the system information carried on the PDSCH to the terminal device according to this retransmission count.

[0098] The present application discloses a communication method, which is applied to an electronic device and includes: sending downlink control information (DCI) in a physical downlink control channel (PDCCH), where the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel (PDSCH); and repeating the transmission of the system information in the PDSCH according to the information on the number of repeated transmissions. Thus, according to the number of repeated transmissions indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly transmitted multiple times, so as to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0099] See Figure 3 , which is a schematic diagram of another communication method provided by an embodiment of the present application. This communication method can be executed by a terminal device in a communication system, and the terminal device can be a terminal, such as a mobile phone, a computer, etc. The method includes the following steps:

[0100] S301: The terminal device receives downlink control information (DCI) in the PDCCH, and the DCI includes indication information.

[0101] S302: Based on a first PDSCH repeated transmission times information list, a second PDSCH repeated transmission times information list, or a third PDSCH repeated transmission times information list, the terminal device receives, through the DCI, the repeated transmission times information corresponding to the indication information.

[0102] S303: The terminal device receives and / or combines the system information in the received PDSCH according to the repeated transmission times information.

[0103] It should be noted that the communication method on the terminal device side (such as a mobile phone and other terminal devices) corresponds to the communication method on the network device side (such as a base station and other network devices), which will not be elaborated here.

[0104] In some specific implementation manners, receiving downlink control information (DCI) in a physical downlink control channel (PDCCH), where the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel (PDSCH), includes: receiving a DCI signaling in the PDCCH, where the DCI signaling includes indication information; and based on a first PDSCH repeated transmission times information list, receiving, through the DCI, the repeated transmission times information corresponding to the indication information.

[0105] In some specific implementation manners, in a physical downlink control channel (PDCCH), downlink control information (DCI) is received, where the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel (PDSCH), including: receiving a DCI signaling in the PDCCH, and receiving a list of second PDSCH repeated transmission number information through a system information block (SIB) signaling, where the list of second PDSCH repeated transmission number information includes indication information and repeated transmission number information; based on the list of second PDSCH repeated transmission number information, receiving, through the DCI, the repeated transmission number information corresponding to the indication information.

[0106] In some specific implementation manners, in a physical downlink control channel (PDCCH), downlink control information (DCI) is received, where the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel (PDSCH), including: receiving a DCI signaling in the PDCCH, and receiving a list of third PDSCH repeated transmission number information through a radio resource control (RRC) signaling, where the list of third PDSCH repeated transmission number information includes indication information and repeated transmission number information; based on the list of third PDSCH repeated transmission number information, receiving, through the DCI, the repeated transmission number information corresponding to the indication information.

[0107] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a first format DCI using a system information radio network temporary identity (SI-RNTI) to scramble a cyclic redundancy check (CRC).

[0108] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a first format DCI using a random access radio network temporary identity (RA-RNTI), a message B radio network temporary identity (MsgB-RNTI), or a paging indication radio network temporary identity (P-RNTI) to scramble the CRC.

[0109] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a first format DCI using a random access radio network temporary identity (RA-RNTI), a message B radio network temporary identity (MsgB-RNTI), or a paging indication radio network temporary identity (P-RNTI) to scramble the CRC.

[0110] In some specific implementation manners, the PDSCH is a PDSCH scheduled by a second format DCI using a cell radio network temporary identity (C-RNTI), a configured scheduling radio network temporary identity (CS-RNTI), or a modulation and coding scheme radio network temporary identity (MCS-RNTI) to scramble the CRC.

[0111] In some specific implementation manners, receiving the repeated transmission times information corresponding to the indication information includes: using the reserved bits of DCI to receive the repeated transmission times information corresponding to the indication information; or, using a specific state of an existing field of DCI to receive the repeated transmission times information corresponding to the indication information; or, using specific bits of an existing field of DCI to receive the repeated transmission times information corresponding to the indication information.

[0112] In some specific implementation manners, indicating the repeated transmission times information corresponding to the indication information includes: using a specific state of an existing field of DCI to indicate the repeated transmission times information corresponding to the indication information; or, using specific bits of an existing field of DCI to indicate the repeated transmission times information corresponding to the indication information; or, adding a new field to DCI to indicate the repeated transmission times information corresponding to the indication information.

[0113] This application discloses a communication method applied to an electronic device, including: receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes the repeated transmission times information of system information in a physical downlink shared channel PDSCH; receiving and / or combining the system information in the received PDSCH according to the repeated transmission times information, so as to meet corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0114] Based on the foregoing communication method, this application further provides an electronic device for executing the foregoing communication method. This will be described below with reference to embodiments.

[0115] See Figure 4 , which is a schematic diagram of the hardware composition of an electronic device provided by an embodiment of this application. The electronic device may be a network device, including but not limited to a base station and a core network unit. Figure 4A simplified schematic diagram of a base station structure is shown. The base station includes a 410 section, a 420 section, and a 430 section. The 410 section is mainly used for baseband processing and controlling the base station, etc.; the 410 section is usually the control center of the base station and can usually be called a processor, which is used to control the base station to execute the processing operations on the network device side in the above method embodiments. The 420 section is mainly used for storing computer program codes and data. The 430 section is mainly used for the transceiver of radio frequency signals and the conversion between radio frequency signals and baseband signals; the 430 section can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of the 430 section can also be called a transceiver or a transceiver, etc., which includes an antenna 433 and a radio frequency circuit (not shown in the figure), where the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices used to implement the receiving function in the 430 section can be regarded as a receiver, and the devices used to implement the sending function can be regarded as a transmitter, that is, the 430 section includes a receiver 432 and a transmitter 431. The receiver can also be called a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be called a transmitting module, a transmitter, or a transmitting circuit, etc.

[0116] The 410 section and the 420 section may include one or more single boards, and each single board may include one or more processors and one or more memories. The processor is used to read and execute the programs in the memory to implement the baseband processing function and the control of the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing ability. As an alternative implementation, it can also be that multiple single boards share one or more processors, or multiple single boards share one or more memories, or multiple single boards share one or more processors at the same time.

[0117] For example, in one implementation, the transceiver module of the 430 section is used to execute the transceiver-related processes performed by the base station (network device) in the above method embodiments. The processor of the 410 section is used to execute the processing-related processes performed by the base station in the above method embodiments.

[0118] It should be understood that Figure 4 only for example and not limitation, the above network device including a processor, a memory, and a transceiver may not depend on Figure 4 the shown structure.

[0119] See Figure 5 , this figure is a schematic diagram of the hardware composition of another electronic device provided by the embodiments of the present application. The electronic device can be a terminal device, and the terminal device can be a terminal, including but not limited to electronic devices such as mobile phones and smart wearable devices (such as smart watches). Taking a mobile phone as an example below, the electronic device may include a processor 510, an external memory interface 520, an internal memory 521, an antenna 1, an antenna 2, a mobile communication module 530, and a wireless communication module 540, etc.

[0120] It can be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than those shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0121] The processor 510 may include one or more processing units. For example, the processor 510 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0122] It can be understood that the interface connection relationship between the modules illustrated in this embodiment is only for illustrative purposes and does not constitute a structural limitation on the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection methods or a combination of multiple interface connection methods described in the above embodiments.

[0123] The external memory interface 520 may be used to connect to an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 510 through the external memory interface 520 to achieve the data storage function. For example, music, video and other files are saved in the external memory card.

[0124] The internal memory 521 can be used to store computer-executable program codes, and the executable program codes include instructions. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521. The internal memory 521 can include a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.). The data storage area can store data created during the use of the electronic device (such as audio data, a phone book, etc.). In addition, the internal memory 521 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521, and / or the instructions stored in the memory provided in the processor.

[0125] The wireless communication function of the electronic device can be implemented by antenna 1, antenna 2, the mobile communication module 530, the wireless communication module 540, the modulation and demodulation processor, and the baseband processor, etc.

[0126] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization rate of the antennas. For example: Antenna 1 can be multiplexed as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0127] The mobile communication module 530 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc. applied to the electronic device. The mobile communication module 530 can include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 530 can receive electromagnetic waves by antenna 1, perform filtering, amplification, etc. on the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 530 can also amplify the signal modulated by the modulation and demodulation processor and convert it into electromagnetic waves through antenna 1 for radiation. In some embodiments, at least some functional modules of the mobile communication module 530 can be provided in the processor 510. In some embodiments, at least some functional modules of the mobile communication module 530 and at least some modules of the processor 510 can be provided in the same device.

[0128] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 530 and antenna 1.

[0129] In addition, an operating system runs on the above components. For example, iOS operating system, Android operating system, Windows operating system, etc. Application programs can be installed and run on the operating system. Those skilled in the art can clearly understand that for the sake of convenient and concise description, the explanations and beneficial effects of the relevant content in any of the above-mentioned electronic devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0130] This application also provides a communication system, which may include network devices (such as base stations and other network devices) as shown in Figure 4 and terminal devices (such as mobile phones and other terminals) as shown in Figure 5 .

[0131] In this application, a terminal or a network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. Among them, the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system in the operating system layer may be any one or more computer operating systems that implement service processing through processes. For example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system, etc. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0132] See Figure 6 , which is a schematic diagram of a communication device provided by an embodiment of this application. The communication device 600 includes: a control information sending module 601 and a system information sending module 602;

[0133] The control information sending module 601 is configured to send downlink control information DCI in a physical downlink control channel PDCCH, and the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel PDSCH;

[0134] The system information sending module 602 is configured to repeatedly send the system information in the PDSCH according to the information on the number of repeated transmissions.

[0135] This application discloses a communication device, which repeatedly sends the system information in the PDSCH multiple times according to the number of repeated transmissions indicated by DCI in the PDCCH, so as to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0136] See Figure 7, this figure is a schematic diagram of another communication device provided by an embodiment of the present application. The communication device 700 includes: a control information receiving module 701 and a system information receiving module 702;

[0137] The control information receiving module 701 is configured to receive downlink control information DCI in a physical downlink control channel PDCCH, and the DCI includes the repetition transmission times information of the system information in a physical downlink shared channel PDSCH;

[0138] The system information receiving module 702 is configured to receive and / or combine the system information in the received PDSCH according to the repetition transmission times information.

[0139] The present application discloses a communication device, which receives and / or combines the system information in the received PDSCH according to the repetition transmission times indicated by the DCI in the PDCCH, so as to meet the corresponding transmission performance requirements, enhance the downlink coverage, and improve the communication quality.

[0140] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and apparatuses can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0141] The above is the case. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that, Applied to a network device, the method includes: In a Physical Downlink Control Channel (PDCCH), transmit Downlink Control Information (DCI), where the DCI includes information on the number of repeated transmissions of system information in a Physical Downlink Shared Channel (PDSCH); According to the information on the number of repeated transmissions, repeatedly transmit the system information in the PDSCH.

2. The method according to claim 1, wherein In the network device, a first PDSCH repeated transmission times information list is stored, and the first PDSCH repeated transmission times information list includes indication information and information on the number of repeated transmissions; the step of transmitting, in a Physical Downlink Control Channel (PDCCH), Downlink Control Information (DCI) that includes information on the number of repeated transmissions of system information in a Physical Downlink Shared Channel (PDSCH) includes: Transmit a DCI signaling in the PDCCH, where the DCI signaling includes the indication information; Based on the first PDSCH repeated transmission times information list, transmit, through the DCI, the information on the number of repeated transmissions corresponding to the indication information.

3. The method according to claim 1, wherein The step of transmitting, in a Physical Downlink Control Channel (PDCCH), Downlink Control Information (DCI) that includes information on the number of repeated transmissions of system information in the PDSCH includes: Configure, through a high-layer signaling, a second PDSCH repeated transmission times information list, where the second PDSCH repeated transmission times information list includes indication information and information on the number of repeated transmissions; Transmit a DCI signaling in the PDCCH, and transmit the second PDSCH repeated transmission times information list through a System Information Block (SIB) signaling, where the DCI signaling includes the indication information; Based on the second PDSCH repeated transmission times information list, transmit, through the DCI, the information on the number of repeated transmissions corresponding to the indication information.

4. The method according to claim 1, wherein The step of transmitting, in a Physical Downlink Control Channel (PDCCH), Downlink Control Information (DCI) that includes information on the number of repeated transmissions of system information in the PDSCH includes: Configure, through a high-layer signaling, a third PDSCH repeated transmission times information list, where the third PDSCH repeated transmission times information list includes indication information and information on the number of repeated transmissions; Transmit a DCI signaling in the PDCCH, and transmit the third PDSCH repeated transmission times information list through a Radio Resource Control (RRC) signaling, where the DCI signaling includes the indication information; Based on the third PDSCH repeated transmission times information list, transmit, through the DCI, the information on the number of repeated transmissions corresponding to the indication information.

5. The method according to claim 2, characterized in that, The PDSCH is a PDSCH scheduled by a first format DCI scrambled by a System Information Radio Network Temporary Identity (SI-RNTI) Cyclic Redundancy Check (CRC).

6. The method according to claim 3 or 4, characterized in that, The PDSCH is a PDSCH scheduled by a first format DCI scrambled by a Random Access Radio Network Temporary Identity (RA-RNTI), a Message B Radio Network Temporary Identity (MsgB-RNTI), or a Paging Indication Radio Network Temporary Identity (P-RNTI) CRC.

7. The method according to claim 4, wherein The PDSCH is the PDSCH scheduled by a first - format DCI scrambled by a cell radio network temporary identifier C - RNTI, a configured scheduling radio network temporary identifier CS - RNTI, or a modulation and coding scheme radio network temporary identifier MCS - RNTI for CRC.

8. The method according to claim 4, wherein The PDSCH is the PDSCH scheduled by a second - format DCI scrambled by a cell radio network temporary identifier C - RNTI, a configured scheduling radio network temporary identifier CS - RNTI, or a modulation and coding scheme radio network temporary identifier MCS - RNTI for CRC.

9. The method according to any one of claims 2, 3, and 7, characterized in that Sending the repetition - transmission - times information corresponding to the indication information includes: Sending the repetition - transmission - times information corresponding to the indication information by using reserved bits of the DCI; Or, sending the repetition - transmission - times information corresponding to the indication information by using a specific state of an existing field of the DCI; Or, sending the repetition - transmission - times information corresponding to the indication information by using specific bits of an existing field of the DCI.

10. The method according to claim 8, wherein Sending the repetition - transmission - times information corresponding to the indication information includes: Sending the repetition - transmission - times information corresponding to the indication information by using a specific state of an existing field of the DCI; Or, sending the repetition - transmission - times information corresponding to the indication information by using specific bits of an existing field of the DCI; Or, sending the repetition - transmission - times information corresponding to the indication information by adding a new field to the DCI.

11. A communication method, characterized in that, Applied to a terminal device, the method includes: Receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes repetition - transmission - times information of system information in a physical downlink shared channel PDSCH; Receiving and / or combining to receive the system information in the PDSCH according to the repetition - transmission - times information.

12. The method according to claim 11, wherein The step of receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes repetition - transmission - times information of system information in a physical downlink shared channel PDSCH, includes: Receiving a DCI signaling in the PDCCH, where the DCI signaling includes the indication information; Receiving, through the DCI, the repetition - transmission - times information corresponding to the indication information based on a first PDSCH repetition - transmission - times information list.

13. The method according to claim 11, wherein The step of receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes repetition - transmission - times information of system information in a physical downlink shared channel PDSCH, includes: Receiving a DCI signaling in the PDCCH and receiving a second PDSCH repetition - transmission - times information list through a system information block SIB signaling, where the second PDSCH repetition - transmission - times information list includes indication information and repetition - transmission - times information; Receiving, through the DCI, the repetition - transmission - times information corresponding to the indication information based on the second PDSCH repetition - transmission - times information list.

14. The method according to claim 11, wherein The step of receiving downlink control information DCI in a physical downlink control channel PDCCH, where the DCI includes repetition - transmission - times information of system information in a physical downlink shared channel PDSCH, includes: Receive DCI signaling in the PDCCH, and, through radio resource control (RRC) signaling, a third PDSCH retransmission count information list, where the third PDSCH retransmission count information list includes indication information and retransmission count information; Based on the third PDSCH retransmission count information list, receive, through DCI, the retransmission count information corresponding to the indication information.

15. The method according to claim 12, wherein The PDSCH is a PDSCH scheduled by a first format DCI scrambled by a system information radio network temporary identity (SI-RNTI) cyclic redundancy check (CRC).

16. The method according to claim 13 or 14, characterized in that The PDSCH is a PDSCH scheduled by a first format DCI scrambled by a random access radio network temporary identity (RA-RNTI), a message B radio network temporary identity (MsgB-RNTI), or a paging indication radio network temporary identity (P-RNTI) CRC.

17. The method according to claim 13 or 14, characterized in that, The PDSCH is a PDSCH scheduled by a first format DCI scrambled by a random access radio network temporary identity (RA-RNTI), a message B radio network temporary identity (MsgB-RNTI), or a paging indication radio network temporary identity (P-RNTI) CRC.

18. The method according to claim 14, wherein The PDSCH is a PDSCH scheduled by a second format DCI scrambled by a cell radio network temporary identity (C-RNTI), a configured scheduling radio network temporary identity (CS-RNTI), or a modulation and coding scheme radio network temporary identity (MCS-RNTI) CRC.

19. The method according to any one of claims 12, 13 and 17, characterized in that The receiving the retransmission count information corresponding to the indication information includes: Using reserved bits of the DCI to receive the retransmission count information corresponding to the indication information; Or, using a specific state of an existing field of the DCI to receive the retransmission count information corresponding to the indication information; Or, using specific bits of an existing field of the DCI to receive the retransmission count information corresponding to the indication information.

20. The method according to claim 18, characterized in that, The receiving the retransmission count information corresponding to the indication information includes: Using a specific state of an existing field of the DCI to receive the retransmission count information corresponding to the indication information; Or, using specific bits of an existing field of the DCI to receive the retransmission count information corresponding to the indication information; Or, by adding a new field to the DCI, receiving the retransmission count information corresponding to the indication information.

21. An electronic device, characterized in that, The electronic device includes: A memory for storing a computer program or computer instructions; A processor for executing the computer program or computer instructions stored in the memory, such that the electronic device performs the method according to any one of claims 1 to 10.

22. An electronic device, characterized in that, The electronic device includes: A memory for storing a computer program or computer instructions; A processor for executing the computer program or computer instructions stored in the memory, such that the electronic device performs the method according to any one of claims 11 to 20.

23. A communication system, characterized in that, The system includes a network device and the terminal device, the network device for performing the method according to any one of claims 1 to 10, and the terminal device for performing the method according to any one of claims 11 to 20.

24. A computer storage medium for storing a computer program, which when executed is used to implement the method according to any one of claims 1 to 20.

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