Communication method and related device

Abstract

Provided in the present application are a communication method and a related device, relating to the technical field of communications. The method is used in a communication device, and comprises: in a physical downlink control channel (PDCCH), sending downlink control information (DCI), the DCI comprising repeated transmission count information of system information in a physical downlink shared channel (PDSCH); and according to the repeated transmission count information, repeatedly sending the system information in the PDSCH. Thus, according to the repeated transmission count indicated by the DCI in the PDCCH, the system information in the PDSCH is repeatedly sent multiple times, thus meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

Description

A communication method and related equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 10, 2024, with application number 202410038392.4 and invention name “A communication method and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and related equipment. Background Art

[0003] Since traditional terrestrial networks cannot provide wide-area coverage, especially in places where base stations cannot or are difficult to deploy, such as the sea, desert, and air, with the development of communication technology, especially the continuous development of new-generation mobile communication technologies such as the fifth generation mobile networks (5G), New Radio Non-Terrestrial Network (NR NTN) technology has emerged.

[0004] NTN satellite communication technology refers to communication between network equipment and terminal devices via satellite. A satellite communication system consists of a satellite segment and a ground segment. The ground segment includes network equipment such as base stations and the core network, as well as terminal devices, including user equipment (UE). Base stations can communicate with terminals via downlinks or uplinks. Specifically, an uplink refers to the link from a terminal to a base station, while a downlink refers to the link from a base station to a terminal. Each base station typically has a coverage area, also known as a coverage zone.

[0005] In related technologies, achieving wide-area network coverage through satellite communications requires satellites to simultaneously transmit multiple downlink beams. However, satellites are unable to concentrate energy in a few beams, which in turn limits signal energy. This results in reduced transmission quality of wireless links and limited downlink coverage. Therefore, enhancing downlink coverage and improving communication quality have become key concerns in the industry. Summary of the Invention

[0006] The purpose of this application is to provide a communication method and related equipment that can enhance downlink coverage and improve communication quality.

[0007] In a first aspect, the present application provides a communication method, which is applied to a network device, comprising: transmitting downlink control information (DCI) in a physical downlink control channel (PDCCH), the DCI including information about the number of repetitions of system information in a physical downlink shared channel (PDSCH); and repeatedly transmitting the system information in the PDSCH based on the number of repetitions. Thus, the system information in the PDSCH is repeatedly transmitted multiple times based on the number of repetitions indicated by the DCI in the PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0008] In some specific implementations, a first PDSCH repetition number information list is stored in a network device, the first PDSCH repetition number information list includes indication information and repetition number information; in a physical downlink control channel PDCCH, downlink control information DCI is sent, the DCI including repetition number information of system information in a physical downlink shared channel PDSCH, including: sending DCI signaling in the PDCCH, the DCI signaling including indication information; based on the repetition number information corresponding to the indication information in the first PDSCH repetition number information list, the repetition number information corresponding to the indication information is sent via DCI. The network device can determine the first PDSCH repetition number information list based on a protocol agreement, and flexibly determine the repetition number of PDSCH based on the first PDSCH repetition number information list to meet corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0009] In some specific implementations, downlink control information (DCI) is transmitted in a physical downlink control channel (PDCCH), where the DCI indicates information about the number of repetitions of system information in a PDSCH. This includes: configuring a second PDSCH repetition number information list through high-layer signaling, where the second PDSCH repetition number information list includes indication information and repetition number information; transmitting DCI signaling in the PDCCH, and transmitting a second PDSCH repetition number information list through system information block (SIB) signaling, where the DCI signaling includes indication information; and transmitting repetition number information corresponding to the indication information in the second PDSCH repetition number information list through DCI. Thus, the system information in the PDSCH is repeatedly transmitted multiple times according to the number of repetitions indicated by the DCI in the PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0010] In some specific implementations, downlink control information (DCI) is transmitted in a physical downlink control channel (PDCCH), where the DCI indicates information about the number of repetitions of system information in a PDSCH. This includes: configuring a third PDSCH repetition number information list through high-layer signaling, where the third PDSCH repetition number information list includes indication information and repetition number information; transmitting DCI signaling in the PDSCH, and transmitting the third PDSCH repetition number information list through radio resource control (RRC) signaling, where the DCI signaling includes indication information; and transmitting repetition number information corresponding to the indication information in the third PDSCH repetition number information list through DCI. Thus, the system information in the PDSCH is repeatedly transmitted multiple times according to the number of repetitions indicated by the DCI in the PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0011] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using a system information radio network temporary identifier SI-RNTI to scramble a cyclic redundancy check code CRC.

[0012] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using 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 to scramble the CRC.

[0013] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using the cell radio network temporary identifier C-RNTI, the configuration scheduling radio network temporary identifier CS-RNTI, or the modulation and coding scheme radio network temporary identifier MCS-RNTI scrambled with CRC.

[0014] In some specific implementations, the PDSCH is a PDSCH scheduled by the second format DCI using the cell radio network temporary identifier C-RNTI, the configuration scheduling radio network temporary identifier CS-RNTI, or the modulation and coding scheme radio network temporary identifier MCS-RNTI scrambled with CRC.

[0015] In some specific implementations, transmitting the number of retransmissions corresponding to the indication information includes: using a reserved bit of the DCI to transmit the number of retransmissions corresponding to the indication information; or using a specific state of an existing field of the DCI to transmit the number of retransmissions corresponding to the indication information; or using a specific bit of an existing field of the DCI to transmit the number of retransmissions corresponding to the indication information. Thus, system information in the PDSCH is repeatedly transmitted multiple times based on the number of retransmissions indicated by the DCI in the PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0016] In some specific implementations, transmitting the repetition number information corresponding to the indication information includes: using a specific state of an existing field in the DCI to transmit the repetition number information corresponding to the indication information; or using a specific bit of an existing field in the DCI to transmit the repetition number information corresponding to the indication information; or adding a new field in the DCI to transmit the repetition number information corresponding to the indication information. Thus, system information in the PDSCH is repeatedly transmitted multiple times based on the repetition number indicated by the DCI in the PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0017] In a 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 PDSCH; and receiving and / or combining the received system information in the PDSCH based on the number of repetitions. This method satisfies corresponding transmission performance requirements, enhances downlink coverage, and improves communication quality.

[0018] In some specific implementations, receiving downlink control information (DCI) in a physical downlink control channel (PDCCH), the DCI including information about repetition counts of system information in a physical downlink shared channel (PDSCH), includes: receiving DCI signaling in the PDCCH, the DCI signaling including indication information; and receiving, based on a first PDSCH repetition count information list, repetition count information corresponding to the indication information via the DCI. This meets corresponding transmission performance requirements, enhances downlink coverage, and improves communication quality.

[0019] In some specific implementations, receiving downlink control information (DCI) in a physical downlink control channel (PDCCH), the DCI including repetition count information of system information in a physical downlink shared channel (PDSCH), includes: receiving DCI signaling in the PDCCH; receiving a second PDSCH repetition count information list via system information block (SIB) signaling, the second PDSCH repetition count information list including indication information and repetition count information; and receiving repetition count information corresponding to the indication information via the DCI based on the second PDSCH repetition count information list. This satisfies corresponding transmission performance requirements, enhances downlink coverage, and improves communication quality.

[0020] In some specific implementations, receiving downlink control information (DCI) in a physical downlink control channel (PDCCH), the DCI including repetition count information of system information in a physical downlink shared channel (PDSCH), includes: receiving DCI signaling in the PDCCH; and, signaling a third PDSCH repetition count information list via radio resource control (RRC), the third PDSCH repetition count information list including indication information and repetition count information; and receiving repetition count information corresponding to the indication information via the DCI based on the third PDSCH repetition count information list. This satisfies corresponding transmission performance requirements, enhances downlink coverage, and improves communication quality.

[0021] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using a system information radio network temporary identifier SI-RNTI to scramble a cyclic redundancy check code CRC.

[0022] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using 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 to scramble the CRC.

[0023] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using 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 to scramble the CRC.

[0024] In some specific implementations, the PDSCH is a PDSCH scheduled by the second format DCI using the cell radio network temporary identifier C-RNTI, the configuration scheduling radio network temporary identifier CS-RNTI, or the modulation and coding scheme radio network temporary identifier MCS-RNTI scrambled with CRC.

[0025] In some specific implementations, receiving information about the number of retransmissions corresponding to the indication information includes: using a reserved bit of a DCI to receive information about the number of retransmissions corresponding to the indication information; or using a specific state of an existing field of the DCI to receive information about the number of retransmissions corresponding to the indication information; or using a specific bit of an existing field of the DCI to receive information about the number of retransmissions corresponding to the indication information. Thus, based on the number of retransmissions indicated by the DCI in the PDCCH, system information in the received PDSCH is received and / or combined, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0026] In some specific implementations, receiving the number of retransmissions corresponding to the indication information includes: using a specific state of an existing field in the DCI to receive the number of retransmissions corresponding to the indication information; or using a specific bit of an existing field in the DCI to receive the number of retransmissions corresponding to the indication information; or adding a new field to the DCI to receive the number of retransmissions corresponding to the indication information. Thus, based on the number of retransmissions indicated by the DCI in the PDCCH, system information in the received PDSCH is received and / or combined, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0027] In a third aspect, the present application provides an electronic device, which includes: a memory for storing computer programs or computer instructions; and a processor for executing the computer programs or computer instructions stored in the memory, so that the electronic device performs the method of the first aspect.

[0028] In a fourth aspect, the present application provides an electronic device, which includes: a memory for storing computer programs or computer instructions; and a processor for executing the computer programs or computer instructions stored in the memory, so that the electronic device performs the method of the second aspect.

[0029] In a fifth aspect, 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 as in the first aspect, and the terminal device is used to execute the method as in the second aspect.

[0030] In a sixth aspect, the present application provides a computer storage medium for storing a computer program, which, when executed, is used to implement the methods of the first and second aspects.

[0031] In a seventh aspect, 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, where the DCI includes information on the number of repeated transmissions of system information in a physical downlink shared channel PDSCH; and the system information sending module is used to repeatedly send the system information in the PDSCH based on the number of repeated transmissions. Thus, the system information in the PDSCH is repeatedly sent multiple times based on the number of repeated transmissions indicated by the DCI in the PDCCH, thereby meeting the corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0032] In an eighth aspect, 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 the physical downlink control channel PDCCH, and the DCI includes the number of repeated transmission times of the system information in the physical downlink shared channel PDSCH; the system information receiving module is used to receive and / or merge the received system information in the PDSCH according to the number of repeated transmission times, so as to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality.

[0033] Based on the above technical solution, this application has the following beneficial effects:

[0034] This application provides a communication method and related equipment. The method transmits downlink control information (DCI) in the PDCCH. The DCI includes information indicating the number of repetitions of system information in the PDSCH. The system message is repeatedly transmitted based on the repetition number information. Thus, the system information in the PDSCH is repeated multiple times according to the number of repetitions indicated by the DCI in the PDCCH to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is an example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application;

[0036] FIG2 is a flow chart of a communication method provided in an embodiment of the present application;

[0037] FIG3 is a flow chart of another communication method provided in an embodiment of the present application;

[0038] FIG4 is a schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application;

[0039] FIG5 is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application;

[0040] FIG6 is a schematic diagram of a communication device provided in an embodiment of the present application;

[0041] FIG7 is a schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The terms "first", "second" and "third" in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0043] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0044] The embodiments of the present application are applied to a communication system. The communication system may be a second-generation (2G) communication system, a third-generation (3G) communication system, an LTE system, a fifth-generation (5G) communication system, a Long Term Evolution (LTE) and 5G hybrid architecture, a 5G New Radio (5G NR) system, or any new communication system that may emerge in future communication developments.

[0045] The communication system includes network equipment and terminal equipment. The network equipment can be a device used to provide network communication functions on the network side, and in some cases it is also called a network device or a network element. The network equipment can generally be a base station (including a functional unit of a base station, or a combination of functional units of a base station) or a core network unit, wherein 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 for accessing the network, and can generally be a terminal. See Figure 1, which is an example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application. Figure 1 includes base station 1 and terminal 2.

[0046] In the embodiments provided in the present 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 (TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, 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 points (Transmission Reception Point, TRP). The base station can also be a wireless 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 that supports the LTE network, and can also communicate with a base station that supports the 5G network. It can also establish dual connections with a base station that supports the LTE network and a base station that supports the 5G network.

[0047] In the embodiments provided herein, the terminal may be in various forms, such as a mobile phone, a tablet computer, 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 a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a wearable terminal device, etc. The terminal may also be sometimes referred to as a terminal device, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, terminal device, wireless communication device, UE agent or UE device, etc. The terminal may also be a fixed terminal or a mobile terminal.

[0048] As mentioned earlier, satellite communication technology came into being because traditional terrestrial networks cannot provide wide-area coverage, especially in places where base stations cannot be deployed, such as the sea, desert, and air.

[0049] Satellite communication technology has the following characteristics. First, it has a wide communication range. Communication is possible between any two points within the range of the satellite's radio waves. Satellite communication can address communication issues in areas where current cellular communication systems are inaccessible or costly to cover. Second, satellite communication technology is not susceptible to land-based disasters and is highly reliable. In extreme situations such as disasters (such as earthquakes) that render cellular communication infrastructure unavailable, satellite communication can quickly establish a communication connection. Third, satellite communication technology offers low latency, making it suitable for industry applications. For example, for latency-sensitive services transmitted over long distances, satellite communication can be used to reduce transmission latency.

[0050] In related technologies, during the project discussions for 3GPP Release 19 NTN (Non-Terrestrial Network) proposed by standardization organizations such as the 3rd Generation Partnership Project (3GPP), considering the need to utilize satellite communication technology to achieve wide-area network coverage, base stations are required to generate multiple downlink beams simultaneously. A beam is a communication resource. A beam can be wide, narrow, or other types of beams, and the beam formation technology can be beamforming or other techniques.

[0051] However, due to the limitation of satellite transmission power and the large propagation loss of satellite communication, the downlink coverage quality of satellite communication is poor, which deteriorates the downlink communication quality.

[0052] In view of this, the present application provides a communication method and related equipment. This method transmits downlink control information (DCI) in the PDCCH. The DCI includes information indicating the number of repetitions of system information in the PDSCH; the system message is repeatedly transmitted based on the number of repetitions. Thus, the system information in the PDSCH is repeated multiple times based on the number of repetitions indicated by the DCI in the PDCCH to meet the corresponding transmission performance requirements, enhance downlink coverage, and improve communication quality. To make the technical solution of this application clearer and easier to understand, the communication method of this application is described below with reference to the accompanying drawings.

[0053] See Figure 2, which is a schematic diagram of a communication method provided in an embodiment of the present application. The communication method can be performed by a network device in a communication system, which can be a network device such as a base station. The method includes the following steps:

[0054] S201: The network device agrees on a first physical downlink shared channel PDSCH repetition number information list through a protocol, or the network device configures a second PDSCH repetition number information list or a third PDSCH repetition number information list through high-layer signaling.

[0055] The Physical Downlink Shared Channel (PDSCH) is a type of physical downlink channel that carries system information such as primary user data. The PDSCH retransmission count refers to the number of times the system information carried in the PDSCH is retransmitted.

[0056] It should be noted that the number of repeated transmissions here may be the number of repeated transmissions of the system information after the initial transmission of the system information, or may be the number of all transmissions of the system information including the initial transmission. This application does not limit the specific number of repeated transmissions.

[0057] In some specific implementations, the network device may agree on a first PDSCH repetition transmission count information list through a protocol. See Table 1, which is a schematic table of a first PDSCH repetition transmission count information list provided in an embodiment of the present application. According to the protocol, a first PDSCH repetition transmission count information list such as Table 1 may be constructed. For example, when the indication information IRep is 0, the repetition transmission count NRep is determined to be 1; when the indication information IRep is 1, the repetition transmission count NRep is determined to be 2, and so on. This application does not limit the specific first PDSCH repetition transmission count information list.

[0058] Table 1

[0059] It should be noted that the correspondence between the indication information and the number of repeated transmissions in the first PDSCH retransmission number information list may be related to factors such as downlink control information (DCI) delay time and communication path loss (Pass-loss). Specifically, if the DCI delay time is large, repeated transmissions may be performed multiple times to improve the transmission quality of wireless communication; if the DCI delay time is small, repeated transmissions may be performed fewer times, or even only once, that is, the number of repeated transmissions may be positively correlated with the DCI delay; if the communication path loss is large, repeated transmissions may be performed multiple times to improve the transmission quality of wireless communication; if the communication path loss is small, repeated transmissions may be performed fewer times, or even only once, that is, the communication path loss may also be positively correlated with the DCI delay.

[0060] In other specific implementations, the network device may also agree on the first PDSCH repetition transmission level list through a protocol based on factors such as DCI delay time and communication path loss (Pass-loss). Rep When it is 0, the repetition transmission level is determined to be the first level; Rep When it is 1, the repetition transmission level is determined to be the second level, etc. The first level can be a level higher than the repetition transmission priority of the second level, or a level lower than the repetition transmission priority of the second level. This application does not limit this.

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

[0062] In other specific implementations, the network device may further configure a second PDSCH repetition transmission count information list through higher layer signaling. The second PDSCH repetition transmission count information list is similar to the first PDSCH repetition transmission count information list and also consists of indication information and repetition counts.

[0063] In other specific implementations, the network device may further configure a third PDSCH repetition transmission count information list through high-layer signaling. The third PDSCH repetition transmission count information list is similar to the first and second PDSCH repetition transmission count information lists and also consists of indication information and repetition counts.

[0064] It should be noted that any one of the configurations of the first PDSCH repetition transmission number information list, the second PDSCH repetition transmission number information list, and the third PDSCH repetition transmission number information list may be selected for execution.

[0065] S202: The network device sends DCI scheduling signaling and PDSCH repetition transmission times indication information to the terminal device.

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

[0067] The PDSCH repetition transmission number indication information is a PDSCH repetition transmission number list, which may be a first PDSCH repetition transmission number information list, a second PDSCH repetition transmission number information list, or a third PDSCH repetition transmission number information list.

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

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

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

[0071] In some examples, the network device may send the second PDSCH repetition transmission number information list to the terminal device in the following manner:

[0072] The network device can send a system information block (System Information Block 1, SIB) signaling to the terminal device, and the SIB signaling includes a SIB message. In 5G NR, the SIB message carries information on whether the terminal device is allowed to access the coverage of the network device (that is, information on whether the user device is allowed to access the cell), and the basic information required for the terminal device to access the coverage of the network device, that is, the above-mentioned second PDSCH repetition transmission number information list, which is used to indicate the number of PDSCH candidate repetition transmissions. In other words, the network device can send the second PDSCH repetition transmission number information list by sending SIB information to the terminal device, so that after combining the indication information in the DCI scheduling signaling, the network device and the terminal device can both obtain the number of repetition transmissions corresponding to the indication information.

[0073] In some examples, the network device may send the third PDSCH repetition transmission number information list to the terminal device in the following manner:

[0074] The network device can send Radio Resource Control (RRC) signaling to the terminal device. Among them, RRC signaling is wireless signaling or lower layer signaling. RRC signaling is used to process the signaling interaction between the network device and the terminal device. The 3GPP specification TS36.331 defines RRC signaling in detail. The RRC signaling can carry a third PDSCH repetition transmission number information list, which is used to indicate the number of PDSCH candidate repetition transmissions. In other words, the network device can send a PDSCH repetition transmission number list by sending an RRC signaling carrying a third PDSCH repetition transmission number information list to the terminal device, so that after combining the indication information in the DCI scheduling signaling, the network device and the terminal device can both obtain the number of repetition transmissions corresponding to the indication information.

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

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

[0077] In the communication method disclosed in the embodiment of the present application, when the PDSCH channel is transmitted, a cyclic redundancy check (CRC) code is added to the transmitted payload, that is, the PDSCH channel is scrambled by the CRC.

[0078] In some specific implementations, the PDSCH may be a PDSCH scheduled by DCI 1_0 using the SI-RNTI scrambled CRC. RNTI (Radio Network Temporary Identifier) ​​is a radio network temporary identifier. SI-RNTI (System Information RNTI) represents a system information radio network temporary identifier and is used to transmit SIB information.

[0079] Then, the number of PDSCH repetitions can be determined based on the indication information in the DCI scheduling signaling and the first PDSCH repetition number information list agreed upon in step S201 (i.e., Table 1). In other words, a value of the indication information in the DCI scheduling signaling indicates a value in the first PDSCH repetition number information list.

[0080] In other specific implementations, the PDSCH may also be a PDSCH scheduled by DCI 1_0 using RA-RNTI / MsgB-RNTI / P-RNTI scrambled with a CRC. RA-RNTI (Radom Access RNTI) represents a random access radio network temporary identifier, used for responding to a physical random access channel (PRACH). MsgB-RNTI represents a second-structure radio network temporary identifier. P-RNTI (Paging RNTI) represents a paging indication radio network temporary identifier, used for parsing paging information.

[0081] Then, the number of PDSCH repetition transmissions can be determined based on the indication information in the DCI scheduling signaling and the second PDSCH repetition transmission number information list configured through higher layer signaling in step S202. In other words, a value of the indication information in the DCI scheduling signaling indicates a value in the second PDSCH repetition transmission number information list.

[0082] It should be noted that the second PDSCH repetition transmission number information list here may be a repetition transmission number information list sent from the network device to the terminal device via an SIB message.

[0083] In other specific implementations, the PDSCH may also be a PDSCH scheduled by DCI 1_0 with CRC scrambled using the cell radio network temporary identifier C-RNTI, the configuration scheduling radio network temporary identifier CS-RNTI, or the modulation and coding scheme radio network temporary identifier MCS-RNTI; or, the PDSCH may also be a PDSCH scheduled by DCI1_1 with CRC scrambled using the cell radio network temporary identifier C-RNTI, the configuration scheduling radio network temporary identifier CS-RNTI, or the modulation and coding scheme radio network temporary identifier MCS-RNTI. Among them, C-RNTI (Cell RNTI) represents the cell radio network temporary identifier, which is a unique identifier used to identify the RRC connection and scheduling dedicated to a specific UE. CS-RNTI (Configured Scheduled RNTI) represents the configuration scheduling radio network temporary identifier, which is used for semi-persistent scheduling of the downlink or uplink authorization configuration. MCS-RNTI (Modulcation Coding Scheme Cell RNTI) represents the modulation and coding scheme radio network temporary identifier, which is used to indicate the MCS table options for the PDSCH and PUSCH channels.

[0084] Then, the number of PDSCH repetition transmissions can be determined based on the indication information in the DCI scheduling signaling and the third PDSCH repetition transmission number information list configured through higher-layer signaling in step S202. In other words, a value of the indication information in the DCI scheduling signaling indicates a value in the third PDSCH repetition transmission number information list.

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

[0086] Next, the specific indication method of the number of PDSCH repetition transmissions in the common search space (CSS) in the above situation is described:

[0087] If the PDSCH is in DCI format 1_0 with CRC scrambled using SI-RNTI / RA-RNTI / MsgB-RNTI / P-RNTI in the common search space (CSS), there are three ways to indicate the number of PDSCH retransmissions:

[0088] First, some or all of the reserved bits of the DCI can be used to indicate the number of repeated transmissions of the PDSCH. Second, a specific state of an existing field of the DCI can be used to indicate the number of repeated transmissions 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 number of repeated transmissions of the PDSCH. Third, a specific bit of an existing field of the DCI can be used to indicate the number of repeated transmissions of the PDSCH. Exemplarily, the highest N bits of the MCS field can be used to indicate the number of repeated transmissions of the PDSCH.

[0089] If the PDSCH is in DCI format 1_0 with TC-RANTI scrambled CRC in the common search space (CSS), there are two ways to indicate the number of PDSCH retransmissions:

[0090] First, a specific state of an existing DCI field can be used to indicate the number of repeated transmissions of the PDSCH. For example, the M highest states of the MCS field can be used to indicate the number of repeated transmissions of the PDSCH. Second, a specific bit of an existing field can be used to indicate the number of repeated transmissions of the PDSCH. For example, the N highest bits of the MCS field can be used to indicate the number of repeated transmissions of the PDSCH.

[0091] Next, the specific indication method of the number of PDSCH repetition transmissions in the dedicated search space (UE-specific SS, USS) in the above situation is described:

[0092] If the physical downlink shared channel (PDSCH) is DCI 1_0 in the dedicated search space (USS) and uses C-RNTI / CS-RNTI / MCS-RNTI to scramble the CRC, there are three ways to indicate the number of repetitions of the PDSCH:

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

[0094] If the PDSCH is DCI 1_1 in the UE-specific search space (USS) and uses C-RNTI / CS-RNTI / MCS-RNTI to scramble the CRC, there are three ways to indicate the number of repetitions of the PDSCH:

[0095] First, a specific state of an existing field of DCI can be used to indicate the number of repeated transmissions of PDSCH. For example, the M highest states of the MCS field in DCI can be used to indicate the number of repeated transmissions of PDSCH. Second, a specific bit of an existing field of DCI can be used to indicate the number of repeated transmissions of PDSCH. For example, the N highest bits of the MCS field can be used to indicate the number of repeated transmissions of PDSCH. Third, a new field can be added to DCI, and the new field is used to indicate the number of repeated transmissions of PDSCH.

[0096] S203: The network device sends the system information carried on the PDSCH to the terminal device according to the number of repeated transmissions.

[0097] After determining the number of repeated transmissions, the network device may send the system information carried on the PDSCH to the terminal device according to the number of repeated transmissions.

[0098] The present application discloses a communication method, applied to electronic devices, comprising: transmitting downlink control information (DCI) in a physical downlink control channel (PDCCH), the DCI including information about the number of repetitions of system information in a physical downlink shared channel (PDSCH); and repeatedly transmitting the system information in the PDSCH based on the repetition number information. Thus, the system information in the PDSCH is repeatedly transmitted multiple times based on the number of repetitions indicated by the DCI in the PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

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

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

[0101] S302: Based on the first PDSCH repetition transmission number information list, the second PDSCH repetition transmission number information list, or the third PDSCH repetition transmission number information list, receive repetition transmission number information corresponding to the indication information through DCI.

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

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

[0104] In some specific implementations, in the physical downlink control channel PDCCH, downlink control information DCI is received, and the DCI includes the number of repeated transmissions of system information in the physical downlink shared channel PDSCH, including: receiving DCI signaling in the PDCCH, the DCI signaling including indication information; based on the first PDSCH repeated transmission number information list, receiving the repeated transmission number information corresponding to the indication information through the DCI.

[0105] In some specific implementations, 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 DCI signaling in the PDCCH, and receiving a second PDSCH repeated transmission number information list through system information block SIB signaling, where the second PDSCH repeated transmission number information list includes indication information and repeated transmission number information; based on the second PDSCH repeated transmission number information list, receiving repeated transmission number information corresponding to the indication information through the DCI.

[0106] In some specific implementations, 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 DCI signaling in the PDCCH, and, through radio resource control RRC signaling, a third PDSCH repeated transmission number information list, where the third PDSCH repeated transmission number information list includes indication information and repeated transmission number information; based on the third PDSCH repeated transmission number information list, receiving, through the DCI, repeated transmission number information corresponding to the indication information.

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

[0108] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using 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 to scramble the CRC.

[0109] In some specific implementations, the PDSCH is a PDSCH scheduled by the first format DCI using 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 to scramble the CRC.

[0110] In some specific implementations, the PDSCH is a PDSCH scheduled by the second format DCI using the cell radio network temporary identifier C-RNTI, the configuration scheduling radio network temporary identifier CS-RNTI, or the modulation and coding scheme radio network temporary identifier MCS-RNTI scrambled with CRC.

[0111] In some specific implementations, receiving the number of repeated transmissions information corresponding to the indication information includes: using a reserved bit of the DCI to receive the number of repeated transmissions information corresponding to the indication information; or, using a specific state of an existing field of the DCI to receive the number of repeated transmissions information corresponding to the indication information; or, using a specific bit of an existing field of the DCI to receive the number of repeated transmissions information corresponding to the indication information.

[0112] In some specific implementations, receiving the number of repeated transmissions information corresponding to the indication information includes: using a specific state of an existing field of DCI to indicate the number of repeated transmissions information corresponding to the indication information; or using a specific bit of an existing field of DCI to indicate the number of repeated transmissions information corresponding to the indication information; or indicating the number of repeated transmissions information corresponding to the indication information by adding a new field to the DCI.

[0113] The present application discloses a communication method, which is applied to an electronic device, comprising: 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; and receiving and / or combining the received system information in the PDSCH based on the information on the number of repeated transmissions, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0114] Based on the aforementioned communication method, the present application also provides an electronic device for executing the aforementioned communication method, which will be described below in conjunction with embodiments.

[0115] Refer to Figure 4, which is a schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application. The electronic device can be a network device, including but not limited to a base station and a core network unit. Figure 4 shows a simplified schematic diagram of the base station structure. The base station includes parts 410, 420, and 430. Part 410 is mainly used for baseband processing, controlling the base station, etc.; Part 410 is usually the control center of the base station, which can usually be called a processor, which is used to control the base station to perform the processing operations on the network device side in the above method embodiment. Part 420 is mainly used to store computer program code and data. Part 430 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; Part 430 can usually be called a transceiver module, transceiver, transceiver circuit, or transceiver, etc. The transceiver module of part 430, which can also be called a transceiver or transceiver, includes an antenna 433 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Alternatively, the device for implementing the receiving function in section 430 may be considered a receiver, and the device for implementing the transmitting function may be considered a transmitter, that is, section 430 includes receiver 432 and transmitter 431. The receiver may also be referred to as a receiving module, receiver, or receiving circuit, and the transmitter may be referred to as a transmitting module, transmitter, or transmitting circuit, etc.

[0116] Sections 410 and 420 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple boards are present, the boards may be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may simultaneously share one or more processors.

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

[0118] It should be understood that FIG4 is merely an example and not a limitation, and the network device including the processor, memory, and transceiver may not rely on the structure shown in FIG4 .

[0119] Referring to Figure 5, this figure is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application. The electronic device can be a terminal device, which can be a terminal, including but not limited to mobile phones, smart wearable devices (such as smart watches), and other electronic devices. Taking a mobile phone as an example, 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 should 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 shown, or some components may be combined or separated, or the components may be arranged differently. 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). Different processing units may be independent devices or integrated into one or more processors.

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

[0123] The external memory interface 520 can be used to connect 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 via the external memory interface 520 to implement data storage functions. For example, files such as music and videos can be stored on the external memory card.

[0124] The internal memory 521 can be used to store computer executable program code, and the executable program code includes 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 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area can store data created during the use of the electronic device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 521 may include a high-speed random access memory, and may 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 through antenna 1, antenna 2, mobile communication module 530, wireless communication module 540, modem processor and baseband processor.

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

[0127] The mobile communication module 530 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied to electronic devices. The mobile communication module 530 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 530 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process 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 for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 530 can be set in the processor 510. In some embodiments, at least some of the functional modules of the mobile communication module 530 can be set in the same device as at least some of the modules of the processor 510.

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

[0129] Furthermore, an operating system runs on the aforementioned components, such as the iOS operating system, the Android operating system, and the Windows operating system. Application programs can be installed and run on the operating system. Those skilled in the art will clearly understand that, for ease of description and brevity, the explanation and beneficial effects of any of the aforementioned electronic devices can be referred to the corresponding method embodiments provided above, and will not be further elaborated here.

[0130] The present application also provides a communication system, which may include a network device as shown in FIG4 (for example, a network device such as a base station) and a terminal device as shown in FIG5 (for example, a terminal such as a mobile phone).

[0131] In this application, a terminal or 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. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes, such as the Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0132] 6, which is a schematic diagram of a communication device provided in an embodiment of the present 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, where the DCI includes information about the number of repetition 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 repeated transmission number information.

[0135] The present application discloses a communication device, which repeatedly transmits system information in PDSCH according to the number of repeated transmissions indicated by DCI in PDCCH, thereby meeting corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

[0136] Referring to FIG7 , which is a schematic diagram of another communication device provided in 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, where the DCI includes information about the number of repetition transmissions of 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 repeated transmission number information.

[0139] The present application discloses a communication device, which receives and / or combines system information in the received PDSCH according to the number of repeated transmissions indicated by the DCI in the PDCCH, thereby meeting the corresponding transmission performance requirements, enhancing downlink coverage, and improving communication quality.

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

[0141] As described above, 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 above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. However, 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 retransmission times of system information in a physical downlink shared channel (PDSCH); According to the information on the number of retransmission times, retransmit the system information in the PDSCH.

2. The method according to claim 1, characterized in that, In the network device, a first PDSCH retransmission number information list is stored, and the first PDSCH retransmission number information list includes indication information and information on the number of retransmission times; the step of, in a physical downlink control channel (PDCCH), transmitting downlink control information (DCI), where the DCI includes information on the number of retransmission times 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 retransmission number information list, transmit, through the DCI, the information on the number of retransmission times corresponding to the indication information.

3. The method according to claim 1, wherein The step of, in a physical downlink control channel (PDCCH), transmitting downlink control information (DCI), where the DCI includes information on the number of retransmission times of system information in the PDSCH, includes: Configure, through a high-layer signaling, a second PDSCH retransmission number information list, where the second PDSCH retransmission number information list includes indication information and information on the number of retransmission times; Transmit a DCI signaling in the PDCCH, and transmit the second PDSCH retransmission number information list through a system information block (SIB) signaling, where the DCI signaling includes the indication information; Based on the second PDSCH retransmission number information list, transmit, through the DCI, the information on the number of retransmission times corresponding to the indication information.

4. The method according to claim 1, wherein The step of, in a physical downlink control channel (PDCCH), transmitting downlink control information (DCI), where the DCI includes information on the number of retransmission times of system information in the PDSCH, includes: Configure, through a high-layer signaling, a third PDSCH retransmission number information list, where the third PDSCH retransmission number information list includes indication information and information on the number of retransmission times; Transmit a DCI signaling in the PDCCH, and transmit the third PDSCH retransmission number information list through a radio resource control (RRC) signaling, where the DCI signaling includes the indication information; Based on the third PDSCH retransmission number information list, transmit, through the DCI, the information on the number of retransmission times 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 with a system information radio network temporary identity (SI-RNTI) cyclic redundancy check code (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 with 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, characterized in that The PDSCH is the PDSCH scheduled by a first - format DCI scrambled 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 for CRC.

8. The method according to claim 4, characterized in that, The PDSCH is the PDSCH scheduled by a second - format DCI scrambled 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 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: Using the reserved bits of the DCI to send the repetition - transmission - times information corresponding to the indication information; Or, using a specific state of an existing field of the DCI to send the repetition - transmission - times information corresponding to the indication information; Or, using specific bits of an existing field of the DCI to send the repetition - transmission - times information corresponding to the indication information.

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

11. A communication method, characterized in that, Applied to a terminal device, the method includes: Receiving, in a physical downlink control channel PDCCH, a downlink control information DCI, where the DCI includes the 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 receiving, in a physical downlink control channel PDCCH, a downlink control information DCI, where the DCI includes the 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; Based on a first PDSCH repetition - transmission - times information list, receiving, through the DCI, the repetition - transmission - times information corresponding to the indication information.

13. The method according to claim 11, wherein, The receiving, in a physical downlink control channel PDCCH, a downlink control information DCI, where the DCI includes the repetition - transmission - times 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 repetition - transmission - times information list, where the second PDSCH repetition - transmission - times information list includes indication information and repetition - transmission - times information; Based on the second PDSCH repetition - transmission - times information list, receiving, through the DCI, the repetition - transmission - times information corresponding to the indication information.

14. The method according to claim 11, wherein The receiving, in a physical downlink control channel PDCCH, a downlink control information DCI, where the DCI includes the 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 with 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 with 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 with 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 with 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, wherein 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, receive 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 is used to perform the method according to any one of claims 1 to 10, and the terminal device is used to perform 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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